Automatic weight allocation library

Abstract

The invention relates to the technical field of cable testing, and discloses an automatic weight allocation library which comprises a sample measuring mechanism, a weight supply mechanism and a controller. The sample measuring mechanism is used for measuring the width and the thickness of a cable insulation layer sample subjected to a thermal extension experiment and transmitting data to the controller, the controller calculates the sectional area of the sample according to the width and the thickness, the counterweight required by the thermal extension experiment of the sample is calculated according to the sectional area, and the thermal extension experiment of the cable insulation layer sample is calculated according to the preset standard counterweight weight. And the weight supply mechanism is controlled to push the required weight quantity. According to the automatic weight allocation library, the detection efficiency is improved, the labor cost is reduced, the influence of human interference factors on a measurement result is reduced, the mechanical size detection of an insulating layer dumbbell sample can be automatically completed, and the balance weight needed by a thermal extension experiment can be automatically measured and calculated.

Description

Technical Field

[0001] The invention relates to the technical field of cable testing, in particular to an automatic weight dispensing library. Background Art

[0002] As the carrier of power transmission, ensuring the safe operation and use of power cables is the responsibility of power and cable workers. Failures in medium- and high-voltage power cables can cause widespread power outages and economic losses. Therefore, quality testing is crucial to ensuring cable quality. Testing the mechanical properties of the insulation layer is particularly important.

[0003] The current testing process mainly involves manual sample preparation and weight selection. The measurement results rely on human factors and are not accurate enough, so improvements are needed. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides an automated weight dispensing library to solve the above technical problems.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: an automated weight dispensing library, comprising a sample measuring mechanism, a weight supply mechanism, and a controller; The sample measuring mechanism is used to measure the width and thickness of the cable insulation layer sample for the thermal extension test and transmit the data to the controller. The controller calculates the cross-sectional area of the sample based on the width and thickness dimensions, and calculates the weight required for the thermal extension test of the sample based on the cross-sectional area. The controller controls the weight supply mechanism to push out the required number of weights based on the preset standard weight.

[0006] Preferably, the cross section of the sample is a dumbbell-shaped structure, wide at both ends and narrow in the middle, and the sample measuring mechanism measures the width and thickness of the narrow middle section to calculate the vertical cross-sectional area of the narrow section; Make at least three sets of measurements each time, and take the minimum value of the cross-sectional area to calculate the weight.

[0007] Preferably, the sample measuring mechanism includes a servo module and a tooling table driven by the servo module, and a clamping tool is installed on the tooling table for fixing the sample; A measuring platform is installed on the top of the servo module, which spans the servo module. On both sides of the tooling, a measuring port is provided at the bottom, and sensors are installed along the inner edge of the measuring port. When the sample on the clamping fixture is transmitted to the measuring port through the servo module, the sensor works to measure the sample.

[0008] Preferably, the upper end surface of the clamping fixture is provided with a limiting groove adapted to the shape of the sample, and a pressing arm is provided at the front end of the clamping fixture, and a connecting column is provided at one end of the pressing arm. The connecting column is rotatably connected to the clamping fixture, and the connecting column can slide up and down in the vertical direction. A spring is installed in the vertical direction between the connecting column and the clamping fixture, and the spring makes the connecting column have a tendency to press down toward the clamping fixture table.

[0009] Preferably, a first horizontal measuring end and a second horizontal measuring end are symmetrically provided along the left and right sides of the inner edge of the measuring port in the horizontal direction, and the ends of the first horizontal measuring end and the second horizontal measuring end move relative to each other to abut the left and right sides of the sample for measuring the width of the sample, and a vertical measuring end is provided at the top of the inner edge of the measuring port, and the end of the vertical measuring end moves downward to abut the upper end surface of the sample for measuring the thickness of the sample.

[0010] Preferably, the weight supply mechanism includes a weight bin, which is arranged in a vertical direction, and the weights are stacked and accommodated in the weight bin; A pushing block is provided at the bottom of the weight bin, which is connected to a servo cylinder. Each time the pushing block slides forward, the bottom weight of the weight bin is pushed out.

[0011] Preferably, the bottom of the weight bin is flush with the upper surface of the pushing block, and a sinking groove is provided at the front end of the pushing block. When the pushing block is in an initial state, the bottom weight in the weight bin is located in the sinking groove.

[0012] Preferably, a ridge is provided in the middle of the weight bin, and a bin cover with a semicircular structure is provided on the outer side of the weight bin. The ridge is located inside the bin cover, so that a C-shaped accommodating space is formed inside the weight bin to adapt to the shape of the weight.

[0013] Preferably, infrared sensors are provided on both sides of the weight bin, including a first infrared sensor and a second infrared sensor provided up and down in the height direction; A transverse through hole is provided on the cover of the weight bin for the first infrared sensor to serve as a detection path; A detection groove is provided at the front end of the pushing block, which crosses the sinking groove and serves as a detection path for the second infrared sensor.

[0014] Preferably, the front end of the pushing block is provided with a weight exporting mechanism and a conveying inclined plate. The front end of the pushing block is provided with a weight exporting mechanism and a conveying inclined plate. The weight exporting mechanism is vertically arranged and has a telescopic end that can be raised and lowered, and the telescopic end can be inserted into the center hole of the weight.

[0015] In summary, the present invention has at least one of the following beneficial effects: The present invention provides an automated weight distribution library, which improves detection efficiency, reduces labor costs, and reduces the influence of human interference factors on measurement results. It can automatically complete the mechanical dimension detection of the dumbbell sample of the insulation layer and automatically calculate the counterweight weights required for the thermal extension experiment. The mechanical dimension of the dumbbell sample of the insulation layer can be measured separately, and the counterweight weights required for the thermal extension experiment can be measured at the same time. The selection can be made on the operation interface, reducing the intervention of human factors. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the clamping tool structure of the present invention; Figure 3 Schematic diagram of the sample structure of the present invention; Figure 4 This is a schematic structural diagram of the measuring platform of the present invention; Figure 5 This is a structural diagram of the weight supply mechanism of the present invention; Figure 6 This is a schematic diagram of the push block structure. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-6 , an automated weight dispensing library, comprising a sample measuring mechanism, a weight supply mechanism, and a controller; The sample measuring mechanism is used to measure the width and thickness of the cable insulation layer sample for the thermal extension test, and transmit the data to the controller. The controller calculates the cross-sectional area of the sample according to the width and thickness. The cross-sectional area is calculated according to 20N / cm 2 Determine the weight balance required for the hot extension experiment of the sample, and control the weight supply mechanism to push out the required number of weights through the preset standard weight.

[0019] Reference Figure 3 As shown, the cross section of the sample is a dumbbell-shaped structure, which is wide at both ends and narrow in the middle. The sample measuring mechanism measures the width and thickness of the narrow section in the middle to calculate the vertical cross-sectional area of the narrow section; at least three sets of measurements are performed each time, and the minimum value of the cross-sectional area is used to calculate the weight.

[0020] The sample measuring mechanism includes a servo module 3 and a tooling table 4 driven by the servo module 3. A clamping tool 2 is installed on the tooling table 4 for fixing the sample. The measuring platform 5 is installed on the upper part of the servo module 3, and the measuring platform 5 spans the servo module 3. On both sides, a measuring port 51 is opened at the bottom, and a sensor is installed along the inner edge of the measuring port 51. When the sample on the clamping tooling 2 is transmitted to the measuring port 51 through the servo module 3, the sensor works to measure the sample.

[0021] The upper end surface of the clamping fixture 2 is provided with a limiting groove 21 adapted to the shape of the sample. The front end of the clamping fixture 2 is provided with a pressing arm 22. One end of the pressing arm 22 is provided with a connecting column. The connecting column is rotatably connected to the clamping fixture 2 and can slide up and down in the vertical direction. A spring is installed in the vertical direction between the connecting column and the clamping fixture 2. The spring makes the connecting column have a tendency to press down toward the clamping fixture table. Figure 2 As shown, A in the figure is the sample. Figure 2 The figure shows the loaded state. If the sample needs to be unloaded, the pressing arm 22 is pulled up appropriately and then rotated to a certain angle so that the pressing arm 22 leaves the sample surface, and finally the sample is taken out.

[0022] Continue to refer to Figure 4 As shown, a first horizontal measuring end 53 and a second horizontal measuring end 54 are symmetrically provided along the left and right sides of the inner edge of the measuring port 51 in the horizontal direction. The ends of the first horizontal measuring end 53 and the second horizontal measuring end 54 move relative to each other and abut against the left and right sides of the sample for measuring the width of the sample. A vertical measuring end 52 is provided at the top of the inner edge of the measuring port 51. The end of the vertical measuring end 52 moves downward to abut against the upper end surface of the sample for measuring the thickness of the sample.

[0023] Reference Figure 1 as well as Figure 5 As shown, the weight supply mechanism includes a weight bin 9, which is arranged in a vertical direction, and the weights are stacked and accommodated in the weight bin 9; The bottom of the weight bin 9 is provided with a push block 8, which is connected to a servo cylinder 10. Figure 5 The servo cylinder 10 is connected to the push block 8 using a connecting frame 11 to transmit power. Each time the push block 8 slides forward, it pushes the bottom weight of the weight bin 9 out. The bottom of the weight bin 9 is flush with the upper surface of the push block 8. The front end of the push block 8 is provided with a sinking groove 82. When the push block 8 is in the initial state, the bottom weight in the weight bin 9 is located in the sinking groove 82.

[0024] A ridge 91 is provided in the middle of the weight bin 9, and a semicircular bin cover 92 is provided on the outer side of the weight bin 9. The ridge 91 is located inside the bin cover 92, so that a C-shaped accommodating space is formed inside the weight bin 9 to adapt to the shape of the weight.

[0025] Infrared sensors are provided on both sides of the weight bin 9, including a first infrared sensor 93 and a second infrared sensor 94 provided up and down in the height direction; A transverse through hole is provided on the compartment cover 92 of the weight compartment 9 for the first infrared sensor 93 to serve as a detection path for detecting whether there are any weights in the weight compartment 3 .

[0026] The front end of the push block 8 is provided with a detection slot 81, which crosses the sinking slot 82 and is used as a detection path for the second infrared sensor 94 to detect whether there is any weight in the push block 8.

[0027] The front end of the push block 8 is provided with a weight extraction mechanism 12 and a conveying inclined plate 6. The weight extraction mechanism 12 is vertically arranged and has a telescopic end that can be lifted and lowered. The telescopic end can be inserted into the center hole of the weight. And the sinking groove 82 of the push block 8 is provided with an avoidance groove for the telescopic end to be inserted. Figure 1 as well as Figure 6 As shown, when the push block 8 pushes the weight to the lower end of the weight discharge mechanism 12, the telescopic end of the weight discharge mechanism 12 descends and inserts into the C-shaped hole of the weight, causing it to be horizontally restrained. At this time, the push block 8 is withdrawn. The telescopic end of the weight discharge mechanism 12 rises, and under the action of gravity, the weight falls to the conveying inclined plate 6 and slides out.

[0028] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automated weight distribution warehouse, characterized by: It includes a sample measuring mechanism, a weight supply mechanism and a controller; The sample measuring mechanism is used to measure the width and thickness of the cable insulation layer sample for the thermal extension test and transmit the data to the controller. The controller calculates the cross-sectional area of the sample based on the width and thickness dimensions, and calculates the weight required for the thermal extension test of the sample based on the cross-sectional area. The controller controls the weight supply mechanism to push out the required number of weights based on the preset standard weight.

2. The automated weight dispensing warehouse according to claim 1, characterized in that: The cross section of the sample is a dumbbell-shaped structure, wide at both ends and narrow in the middle. The sample measuring mechanism measures the width and thickness of the narrow section in the middle to calculate the vertical cross-sectional area of the narrow section. Make at least three sets of measurements each time, and take the minimum value of the cross-sectional area to calculate the weight.

3. The automated weight dispensing warehouse according to claim 1, characterized in that: The sample measuring mechanism comprises a servo module (3) and a tooling table (4) driven by the servo module (3), wherein a clamping tooling (2) is installed on the tooling table (4) for fixing the sample; A measuring platform (5) is installed on the upper part of the servo module (3), and the measuring platform (5) spans the servo module (3). On both sides of the clamping fixture (2), a measuring port (51) is provided at the bottom, and a sensor is installed along the inner edge of the measuring port (51). When the sample on the clamping fixture (2) is transmitted to the measuring port (51) through the servo module (3), the sensor works to measure the sample.

4. The automated weight dispensing warehouse according to claim 3, characterized in that: The upper end surface of the clamping fixture (2) is provided with a limiting groove (21) adapted to the shape of the sample, the front end of the clamping fixture (2) is provided with a pressing arm (22), one end of the pressing arm (22) is provided with a connecting column, the connecting column is rotatably connected to the clamping fixture (2), the connecting column can slide up and down in the vertical direction, and a spring is installed in the vertical direction between the connecting column and the clamping fixture (2), and the spring makes the connecting column have a tendency to press down toward the clamping fixture table.

5. The automated weight dispensing warehouse according to claim 3, characterized in that: A first horizontal measuring end (53) and a second horizontal measuring end (54) are symmetrically arranged along the left and right sides of the inner edge of the measuring port (51). The ends of the first horizontal measuring end (53) and the second horizontal measuring end (54) move relative to each other to abut against the left and right sides of the sample for measuring the width of the sample. A vertical measuring end (52) is arranged at the top of the inner edge of the measuring port (51). The end of the vertical measuring end (52) moves downward to abut against the upper end surface of the sample for measuring the thickness of the sample.

6. The automated weight dispensing warehouse according to claim 5, characterized in that: The weight supply mechanism comprises a weight bin (9), the weight bin (9) is arranged in a vertical direction, and the weights are stacked and accommodated in the weight bin (9); A pushing block (8) is provided at the bottom of the weight bin (9), and the pushing block (8) is connected to a servo cylinder (10). Each time the pushing block (8) slides forward, the bottom weight of the weight bin (9) is pushed out.

7. The automated weight dispensing warehouse according to claim 5, characterized in that: The bottom of the weight bin (9) is flush with the upper surface of the push block (8), and a sinking groove (82) is provided at the front end of the push block (8). When the push block (8) is in an initial state, the bottom weight in the weight bin (9) is located in the sinking groove (82).

8. The automated weight dispensing warehouse according to claim 7, characterized in that: A ridge (91) is provided in the middle of the weight bin (9), and a bin cover (92) with a semicircular structure is provided on the outer side of the weight bin (9). The ridge (91) is located inside the bin cover (92), so that a C-shaped accommodating space is formed inside the weight bin (9) to adapt to the shape of the weight.

9. The automated weight dispensing warehouse according to claim 8, characterized in that: Infrared sensors are provided on both sides of the weight bin (9), including a first infrared sensor (93) and a second infrared sensor (94) provided vertically. A transverse through hole is provided on the cover (92) of the weight bin (9) for the first infrared sensor (93) to serve as a detection path; A detection groove (81) is provided at the front end of the pushing block (8), and the detection groove (81) crosses the sinking groove (82) and serves as a detection path for the second infrared sensor (94).

10. The automated weight dispensing warehouse according to claim 6, characterized in that: The front end of the pushing block (8) is provided with a weight exporting mechanism (12) and a conveying inclined plate (6). The weight exporting mechanism (12) is vertically arranged and has a telescopic end that can be raised and lowered, and the telescopic end can be inserted into the center hole of the weight.

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