Carbon sheet resistance automatic testing and sorting machine

Abstract

This utility model relates to the field of potentiometer technology, and in particular to an automatic carbon sheet resistance testing and sorting machine. The utility model has a reasonable structural design. A vibrating feeding tray arranges and conveys carbon sheet components in a strip-like shape. The carbon sheet components are fed into a testing device via a linear vibrating track. The testing device uses a drive gear to drive a turntable to rotate continuously and intermittently. The turntable uses its own receiving groove to receive the carbon sheet components. The carbon sheet components rotate to the testing station. The movable end of a horizontal push rod drives a movable probe to move outward. The movable probe extends into the receiving groove and pushes the carbon sheet component to contact the fixed probe at its inner end. After the movable probe, fixed probe, and both ends of the carbon sheet component contact, a test circuit is formed by a conductive slip ring, wires, and the testing machine. Based on the test results, a guiding device guides the tested carbon sheet components into the corresponding receiving box in the receiving device. In this way, the automatic testing and sorting of the carbon sheet resistance values ​​of the components can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of potentiometer technology, and in particular to an automatic carbon sheet resistance value testing and classification machine. Background Technology

[0002] As the core functional component of a potentiometer, the carbon sheet achieves resistance adjustment through a conductive carbon film deposited on its surface. This carbon film is typically prepared using a screen printing process, with the film thickness controlled within the range of 15–50 μm. Its uniformity directly determines the linearity and lifespan of the potentiometer. Deviations in carbon paste ratio, sintering temperature fluctuations, or mechanical stress damage that may occur during the production of the carbon sheet can all cause the final resistance value to deviate from the design specifications. Therefore, a rigorous testing procedure must be established.

[0003] Traditional resistance testing of carbon sheet components mostly relies on manual methods, which are inefficient and have a high probability of false positives. Therefore, the inventors aim to design an automatic carbon sheet resistance testing and classification machine. Summary of the Invention

[0004] The purpose of this invention is to overcome the aforementioned problems in traditional technologies and provide an automatic carbon sheet resistance value testing and classification machine.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0006] An automatic carbon sheet resistance testing and sorting machine includes a cabinet, a vibrating feeding tray, a linear vibration track, a testing device, a guiding device, and a receiving device. The upper end of the cabinet is equipped with a vibrating feeding tray capable of arranging carbon sheet components in a strip-like shape in an orderly manner. The output end of the vibrating feeding tray is connected to the input end of the testing device via the linear vibration track. A guiding device is installed between the output end of the testing device and the receiving device.

[0007] The testing device includes a mounting plate, which is inclined and has a testing machine mounted on its back. A turntable is movablely restricted on the front side of the mounting plate. A drive gear for rotating the turntable is mounted on the mounting plate. A feed block is mounted on the side of the mounting plate near the linear vibration track. A sliding cover is mounted on the side of the mounting plate near the material guide device. A transverse push rod is built into the side of the mounting plate opposite to the feed block. A movable probe is mounted on the movable end of the transverse push rod. The turntable has multiple receiving grooves along its circumference that match the width of the carbon sheet component. A fixed probe is mounted on the inner end of each receiving groove. A conductive slip ring is provided between the mounting plate and the turntable. After the movable probe and the fixed probe contact the two ends of the carbon sheet component, they form a test circuit together with the testing machine through the conductive slip ring and wires.

[0008] Furthermore, in the aforementioned automatic carbon sheet resistance testing and sorting machine, the turntable is divided into an upper part and a lower part. The receiving groove is located in the upper part of the turntable, and a driven gear ring that meshes with the drive gear is provided on the lower periphery of the turntable. The drive gear is driven to rotate by a servo motor located on the back side of the mounting plate.

[0009] Furthermore, in the aforementioned automatic carbon sheet resistance testing and sorting machine, the mounting plate has a rotating groove that mates with the turntable, and the peripheral side wall of the mounting plate in the rotating groove has a test port that facilitates the extension of the movable probe.

[0010] Furthermore, in the aforementioned automatic carbon sheet resistance testing and sorting machine, a fixed slip ring is embedded in the bottom side wall of the mounting plate, and a movable slip ring is embedded in the back side of the turntable. The fixed slip ring and the movable slip ring together constitute a conductive slip ring.

[0011] Furthermore, in the aforementioned automatic carbon sheet resistance testing and sorting machine, the turntable is provided with several weight reduction grooves along its circumference, and the positions of the weight reduction grooves are staggered from the positions of the receiving grooves.

[0012] Furthermore, in the aforementioned automatic carbon sheet resistance testing and sorting machine, the feed block has a feed channel that matches the shape of the carbon sheet component.

[0013] Furthermore, in the aforementioned automatic carbon sheet resistance testing and sorting machine, the receiving device is equipped with three receiving boxes arranged side by side, which serve as receiving boxes for qualified products, low-quality products, and high-quality products, respectively.

[0014] Furthermore, in the aforementioned automatic carbon sheet resistance testing and sorting machine, the material guiding device includes a grooved base plate, movable shafts, guide plates, a synchronous belt drive, and a material guiding motor. Two movable shafts arranged side by side are movably supported on the grooved base plate. The guide plates are fixed to the outer side of the movable shafts located inside the grooved base plate. The movable shafts located outside the grooved base plate rotate synchronously clockwise or counterclockwise through the synchronous belt drive. One of the movable shafts serves as the drive shaft, driven by the material guiding motor fixed to the back side of the grooved base plate. The area between the two guide plates is used as a material guiding channel. According to the test results of the testing machine, the outlet orientation of the material guiding channel is adjusted by the material guiding motor.

[0015] The beneficial effects of this utility model are:

[0016] This utility model has a reasonable structural design, mainly consisting of a cabinet, a vibrating feeding tray, a linear vibration track, a testing device, a guiding device, and a receiving device. These components work together to arrange and transport the strip-shaped carbon sheet components outwards via the vibrating feeding tray. The carbon sheet components are then fed into the testing device via the linear vibration track. The testing device uses a drive gear to rotate a turntable continuously and intermittently. The turntable uses its own receiving groove to receive the carbon sheet components, which then rotate to the testing position. The movable end of the horizontal push rod drives the movable probe outwards, extending into the receiving groove and pushing the carbon sheet component to contact the fixed probe at its inner end. After the movable probe, fixed probe, and both ends of the carbon sheet component contact, a test circuit is formed through a conductive slip ring, wires, and the testing machine. Based on the test results, the guiding device guides the tested carbon sheet components into the corresponding receiving box in the receiving device. This method enables automatic testing and classification of the carbon sheet component's resistance value.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the carbon sheet component in this utility model;

[0021] Figure 3 This is an assembly diagram of the testing device in this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the turntable in this utility model;

[0023] Figure 5 yes Figure 3 Enlarged view of point A in the middle;

[0024] Figure 6 This is a schematic diagram showing the position of the movable probe in this utility model;

[0025] Figure 7 This is a schematic diagram of the material guiding device in this utility model;

[0026] Figure 8 This is a top view schematic diagram of the material guiding device in this utility model;

[0027] In the attached diagram, the components represented by each number are as follows:

[0028] 1-Cabinet, 2-Vibrating feeding tray, 3-Straight vibration track, 4-Testing device, 401-Mounting plate, 402-Turntable, 403-Drive gear, 404-Feeding block, 405-Sliding cover, 406-Receiving groove, 407-Fixed probe, 408-Weight reduction groove, 409-Test port, 410-Horizontal push rod, 411-Movable probe, 5-Guiding device, 501-Groove base plate, 502-Movable shaft, 503-Guiding plate, 504-Synchronous belt drive component, 505-Guiding motor, 6-Receiving device, 7-Carbon sheet component. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] like Figures 1-8 As shown, this embodiment provides an automatic carbon sheet resistance testing and sorting machine, including a cabinet 1, a vibrating feeding tray 2, a linear vibration track 3, a testing device 4, a guiding device 5, and a receiving device 6. The upper end of the cabinet 1 is equipped with a vibrating feeding tray 2, which can orderly arrange carbon sheet components 7 in a strip shape. The output end of the vibrating feeding tray 2 is connected to the input end of the testing device 4 via the linear vibration track 3. The guiding device 5 is installed between the output end of the testing device 4 and the receiving device 6.

[0031] In this embodiment, the testing device 4 includes a mounting plate 401, which is inclined and has a testing machine mounted on its back. A turntable 402 is movablely restricted on the front side of the mounting plate 401, and a drive gear 403 for rotating the turntable 402 is mounted on the mounting plate 401. A feed block 404 is mounted on the side of the mounting plate 401 near the linear vibration track 3, and a sliding cover 405 is mounted on the side of the mounting plate 401 near the material guiding device 5. A transverse push rod 410 is built into the side of the mounting plate 401 opposite to the feed block 404. A movable probe 411 is mounted on the movable end of the transverse push rod 410. The turntable 402 has multiple receiving grooves 406 along its circumference that match the width of the carbon sheet component 7. A fixed probe 407 is mounted on the inner end of the receiving groove 406. A conductive slip ring is provided between the mounting plate 401 and the turntable 402. After the movable probe 411 and the fixed probe 407 come into contact with the two ends of the carbon sheet component 7, they form a test circuit together with the test machine through the conductive slip ring and the wire.

[0032] In this embodiment, the turntable 402 is divided into an upper part and a lower part. The receiving groove 406 is located in the upper part of the turntable. The lower periphery of the turntable 402 is provided with a driven gear ring that meshes with the drive gear 403. The drive gear 403 is driven to rotate by a servo motor located on the back side of the mounting plate 401.

[0033] In this embodiment, the mounting plate 401 has a rotating groove that cooperates with the turntable 402, and the peripheral side wall of the mounting plate 401 has a test port 409 that facilitates the extension of the movable probe 411.

[0034] In this embodiment, a fixed slip ring is embedded in the bottom side wall of the rotating groove of the mounting plate 401, and a movable slip ring is embedded in the back side of the turntable. The fixed slip ring and the movable slip ring together constitute a conductive slip ring.

[0035] In this embodiment, the turntable 402 is provided with a plurality of weight-reducing grooves 408 along the circumference, and the positions of the weight-reducing grooves 408 are offset from the positions of the receiving grooves 406.

[0036] In this embodiment, the feed block 404 has a feed channel that matches the shape of the carbon sheet component 7.

[0037] In this embodiment, the receiving device 6 is provided with three receiving boxes arranged side by side, which serve as receiving boxes for qualified products, low-quality products, and high-quality products, respectively, with the receiving box for qualified products located in the middle position.

[0038] In this embodiment, the material guiding device 5 includes a grooved base plate 501, movable shafts 502, guide plates 503, a synchronous belt drive 504, and a material guiding motor 505. Two movable shafts 502 arranged side by side are movably supported on the grooved base plate 501. The guide plates 503 are fixed to the outer side of the shafts of the movable shafts 502 located inside the grooved base plate 501. The shafts of the movable shafts 502 located outside the grooved base plate 501 rotate synchronously clockwise or counterclockwise through the synchronous belt drive 504. One of the movable shafts 502 serves as the drive shaft and is driven to rotate by the material guiding motor 505 fixed to the back side of the grooved base plate 501. The area between the two guide plates 503 is used as a material guiding channel. According to the test results of the testing machine, the outlet orientation of the material guiding channel is adjusted by the material guiding motor 505.

[0039] A specific application of this embodiment is as follows: A vibrating feeding tray 2 arranges carbon sheet components 7 in a strip-like shape in an orderly manner and conveys them outwards. The carbon sheet components 7 are fed into the testing device 4 via a linear vibration track 3. The testing device 4 uses a drive gear 403 to drive a turntable 402 to rotate continuously and intermittently. The turntable 402 uses its own receiving groove 406 to receive the carbon sheet components 7. The carbon sheet components 7 then rotate to the testing station. The movable end of the transverse push rod 410 drives the movable probe 411 to move outwards. The movable probe 411 extends into the receiving groove 406 and pushes the carbon sheet component 7 to abut against the fixed probe 407 at the inner end. After the movable probe 411, the fixed probe 407, and both ends of the carbon sheet component 7 come into contact, a test circuit is formed together with the testing machine through a conductive slip ring, wires, and the tester. The guiding device 5 guides the tested carbon sheet components 7 into the corresponding receiving box in the receiving device 6 according to the test results. In this way, the automatic testing and classification of the carbon sheet resistance value of the carbon sheet components 7 can be achieved.

[0040] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic carbon sheet resistance value testing and sorting machine, characterized in that, It includes a cabinet, a vibrating feeding tray, a linear vibration track, a testing device, a guiding device, and a receiving device. The upper end of the cabinet is equipped with a vibrating feeding tray that can arrange carbon sheet components in a strip shape in an orderly manner. The output end of the vibrating feeding tray is connected to the input end of the testing device via the linear vibration track. A guiding device is installed between the output end of the testing device and the receiving device. The testing device includes a mounting plate, which is inclined and has a testing machine mounted on its back. A turntable is movablely restricted on the front side of the mounting plate. A drive gear for rotating the turntable is mounted on the mounting plate. A feed block is mounted on the side of the mounting plate near the linear vibration track. A sliding cover is mounted on the side of the mounting plate near the material guide device. A transverse push rod is built into the side of the mounting plate opposite to the feed block. A movable probe is mounted on the movable end of the transverse push rod. The turntable has multiple receiving grooves along its circumference that match the width of the carbon sheet component. A fixed probe is mounted on the inner end of each receiving groove. A conductive slip ring is provided between the mounting plate and the turntable. After the movable probe and the fixed probe contact the two ends of the carbon sheet component, they form a test circuit together with the testing machine through the conductive slip ring and wires.

2. The automatic carbon sheet resistance testing and sorting machine according to claim 1, characterized in that, The turntable is divided into an upper part and a lower part. The receiving groove is located in the upper part of the turntable. A driven gear ring that meshes with the drive gear is provided on the lower periphery of the turntable. The drive gear is driven to rotate by a servo motor located on the back side of the mounting plate.

3. The automatic carbon sheet resistance testing and sorting machine according to claim 1, characterized in that, The mounting plate has a rotating groove that mates with the turntable, and the peripheral side wall of the mounting plate has a test port that facilitates the extension of the movable probe.

4. The automatic carbon sheet resistance testing and sorting machine according to claim 3, characterized in that, The mounting plate is embedded in the bottom side wall of the rotating groove and has a fixed slip ring portion, while the back side of the turntable is embedded in a movable slip ring portion. The fixed slip ring portion and the movable slip ring portion together constitute a conductive slip ring.

5. The automatic carbon sheet resistance testing and sorting machine according to claim 1, characterized in that, The turntable has several weight-reducing grooves along its circumference, and the positions of the weight-reducing grooves are staggered from the positions of the receiving grooves.

6. The automatic carbon sheet resistance testing and sorting machine according to claim 1, characterized in that, The feed block has a feed channel that matches the shape of the carbon sheet component.

7. The automatic carbon sheet resistance testing and sorting machine according to claim 1, characterized in that, The receiving device has three receiving boxes arranged side by side, which serve as receiving boxes for qualified products, low-quality products, and high-quality products, respectively.

8. The automatic carbon sheet resistance testing and sorting machine according to claim 7, characterized in that, The material guiding device includes a trough-shaped base plate, movable shafts, guide plates, a synchronous belt drive, and a material guiding motor. Two movable shafts arranged side by side are movably supported on the trough-shaped base plate. The guide plates are fixed to the outer side of the movable shafts located inside the trough-shaped base plate. The shafts located outside the trough-shaped base plate rotate synchronously clockwise or counterclockwise through the synchronous belt drive. One of the movable shafts serves as the drive shaft, driven by the material guiding motor fixed to the back side of the trough-shaped base plate. The area between the two guide plates is used as a material guiding channel. The outlet orientation of the material guiding channel is adjusted by the material guiding motor according to the test results of the testing machine.

Images