Cable protection pipe sample polishing device and full-automatic sample preparation assembly line comprising same

Abstract

The invention relates to the field of industrial detection, in particular to the field of cable protection pipe detection, and more accurately relates to a cable protection pipe sample polishing device and a full-automatic sample preparation assembly line comprising the cable protection pipe sample polishing device. A space for sample movement is formed between the guide strips, and a first sample polishing position and a second sample polishing position are arranged on a walking path formed by the guide strips; and the polished sample falls into the sample collecting box and is conveyed to the next station by the conveying belt. After the technical scheme disclosed by the invention is adopted, fine grinding of different sizes can be realized, particularly for a small sample with a narrow width, automatic and effective grinding of the small sample with the narrow width can be realized in a manner of firstly grinding and then cutting, and an effective basis is provided for realizing automatic sample preparation.

Description

Technical Field

[0001] The present invention relates to the field of industrial detection, in particular to the field of detection of cable protection tubes, and more precisely to a cable protection tube sample grinding device and a full-automatic sample preparation line comprising the same. Background Art

[0002] Cable protection tube refers to a metal or non-metal protection tube with a certain mechanical strength that is laid on the outer layer of the cable to prevent the cable from being damaged. Therefore, the cable protection tube must meet two conditions at the same time. First, it must have sufficient mechanical strength to withstand the impact of the external environment, and at the same time, it must have good corrosion resistance and temperature resistance to adapt to different laying environments.

[0003] In order to monitor and test the performance of cable protection tubes, different testing standards and test methods have been formulated and designed in the existing technology. For example, DL / T 802.3-2007 and DL / T 802.7-2010 stipulate the testing requirements and testing standards that the cable storage performance needs to meet. Before the test, a section of the cable protection tube to be tested must be taken and cut to obtain the cable protection sample. The cut sample cannot be used directly for the test because its edge generally has burrs and other factors that affect the smooth progress of the test.

[0004] Therefore, in order to obtain better test results, we usually use manual grinding to grind the cut samples in the existing technology. However, the size of the sample is small, it is not easy to keep it stable by hand during manual grinding, and the grinding effect depends deeply on the worker's operating level, and the grinding effect and repeatability of each sample cannot be guaranteed. Summary of the invention

[0005] In order to achieve that the smoothness of the sample surface obtained by milling a cable protection tube meets the test requirements, the present invention provides a cable protection tube sample grinding device, comprising a workbench, guide strips are arranged in parallel and in pairs on the workbench, and a space for sample movement is formed between the guide strips; the workbench also comprises a pushing block, and the pushing block is formed or fixed on the pushing block base, and a first driving system is arranged on the pushing block base. The first driving system enables the pushing block base to move up and down, and also to move along the moving space formed by the guide strips; the pushing block base is fixed on the first bracket so that the pushing block is located above the corresponding sample moving space formed by the guide strips; a first sample grinding position and a second sample grinding position are arranged on the walking path formed by the guide strips; two pulley groups are arranged relatively at the first grinding position, and the pulley group includes at least two wheels, wherein the wheel located at the bottom is a first driven wheel, and the wheel located at the top is a second driven wheel, and a driving wheel is also arranged between the two first driven wheels arranged relatively to drive the two first driven wheels The wheels rotate simultaneously, and the two second driven wheels are correspondingly arranged on both sides of the sample moving space. The workbench and guide strip corresponding to the second driven wheels are separated by the second driven wheels to ensure that the belt on the outside of the pulley can directly contact the two sides of the sample; it should be understood that there is an unseparated workbench between the two second driven wheels, and this part of the workbench is a support table to support the sample from falling during grinding; a grinding wheel is arranged at the second grinding position, and the grinding wheel is fixed on a support plate, and the support plate is connected to the second bracket through a grinding wheel base, and a second driving system is arranged on the grinding wheel base, which enables the grinding wheel base to move up and down. When it moves downward and contacts the surface of the sample, the upper surface of the sample can be ground. When it moves upward, it leaves the grinding position and moves upward until there is no interference with the push block, so that the sample continues to move forward under the action of the push block; it also includes a sample collection position, and the sample collection position includes a conveyor belt lower than the workbench, and a sample collection box is placed on the conveyor belt. The polished sample falls into the sample collection box and is transported to the next workstation by the conveyor belt.

[0006] Preferably, two or more groups of guide bars are provided, each group of guide bars corresponds to a sample of a specific width. To ensure the effectiveness of the guide bars, when two or more groups of guide bars are provided, the height of the outer guide bars is greater than the height of the inner guide bars. In this way, it can be ensured that samples of different widths can be limited by different guide bars due to the height difference.

[0007] Preferably, the pulley assembly further includes a buffer wheel, which is arranged in a triangle with the first driven wheel and the second driven wheel. The buffer wheel can form a buffering effect on the rotation of the belt, ensuring that the belt rotates more smoothly.

[0008] Preferably, the grinding wheels are arranged in pairs. Preferably, two or more sets of grinding wheels are provided.

[0009] Preferably, a large grinding wheel and a small grinding wheel with different widths are respectively provided to meet the grinding of the upper surfaces of specimens of different sizes.

[0010] Preferably, the conveyor belt is in a "C" shape, and the end of the guiding strip corresponds to the horizontal section of the conveyor belt. The specimen collection box enters from the end of one vertical section and moves along this vertical section to the position corresponding to the end of the guiding strip, then turns 90° to the horizontal section, collects the dropped specimens at the end of the guiding strip, then turns 90° to the other vertical section, and exits from the end of this vertical section to enter the next process. Grinding is a link in the automated sample preparation. Designing the connection method with the next process station can provide a basis for the full-process automation.

[0011] Preferably, a cutting position is further provided on the walking path formed by the guiding strip. A cutting blade is provided at the cutting position. The cutting blade is installed under the workbench. A cutting slot matching the cutting blade is formed on the workbench. The cutting blade is a circular blade, and a fourth driving system is connected below it. Under the action of the fourth driving system, it lifts up from the bottom and completes the cutting during this process. There is also a pressing column. The pressing column is fixed on the pressing base. The pressing base is fixed on the third bracket. The pressing base is provided with a third driving system. This driving system enables the pressing base to move up and down. When it moves downward, the pressing column acts on the specimen to ensure that the specimen does not displace during the cutting process. When it moves upward and lifts, the cut specimen can continue to move forward under the action of the pushing block. It should be understood that in order to ensure the movement of the pushing block after the pressing column is lifted, there should be no interference between it and the pushing block.

[0012] Meanwhile, a full-automatic sample preparation production line including the above-mentioned cable protection pipe specimen grinding device is also disclosed in the present invention. The production line is assembled by multiple workstations that complete different tasks. Combining the cable protection pipe specimen grinding device disclosed in the present invention with any automated device with milling cutting, cleaning, and drying can achieve full-automatic production line sample preparation.

[0013] After adopting the technical solution disclosed in the present invention, fine grinding of different sizes can be achieved. Especially for small specimens with a narrow width, the present invention can achieve effective automated grinding of narrow-width small specimens by first grinding and then cutting, providing an effective basis for realizing automated sample preparation. Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the overall cable protection pipe specimen grinding device.

[0015] Figure 2This is a schematic diagram of the distribution of the pulley group in the first grinding position of the cable protection tube sample grinding device.

[0016] Figure 3 This is a schematic diagram of the first grinding position of the cable protection tube sample grinding device.

[0017] Figure 4 This is a partial schematic diagram of the second grinding position of the cable protection tube sample grinding device.

[0018] Figure 5 Schematic diagram of the cutting position of the cable protection tube sample grinding device.

[0019] Figure 6 Schematic diagram of the cable protection tube sample grinding device collection position.

[0020] Figure 7 This is a partial schematic diagram of the cable protection tube sample grinding device from another perspective. DETAILED DESCRIPTION

[0021] In order to better understand the present invention, the present invention is further described below in conjunction with specific embodiments.

[0022] definition: The driving system refers to a system that can drive the corresponding components to move along a set route. The driving system can adopt mature driving methods in the prior art according to different movement needs. For example, the first driving system, the second driving system, the third driving system, and the fourth driving system involved in the present invention need to meet the needs of up and down movement of different components. According to the prior art, these driving systems can adopt servo motor systems to complete up and down movement under the drive of the motor. The connection method with the driving system and the working method of the driving system are both in the prior art. Example 1

[0023] Combination Figures 1 to 6 From the perspective of the cable protection tube sample grinding device, the cable protection tube sample grinding device comprises a workbench 1, on which guide bars 2 are arranged in parallel and in pairs, and a space 3 for sample movement is formed between the guide bars. Figure 2 It can be seen that in this embodiment, the guide bars are provided in two groups, namely, the first guide bar 201, the second guide bar 202, the third guide bar 203 and the fourth guide bar 204. The first guide bar and the second guide bar form a group, and the third guide bar and the fourth guide bar form a group. The two groups of guide bars correspond to two different sample widths, thin and thick. Figure 2It can be seen that the heights of the third guide bar 203 and the fourth guide bar 204 located on the outside are respectively greater than the heights of the corresponding inner guide bars, the first guide bar 201 and the second guide bar 202. In this way, when a sample with a small width passes through, it is contained in the space formed by the first guide bar and the second guide bar, and when a sample with a large width passes through, its bottom is supported on the first guide bar and the second guide bar and is located in the space formed by the third guide bar and the fourth guide bar, so that samples of different widths can pass through the height difference and be limited by different guide bars.

[0024] Back to Figures 1 to 6 From the perspective of the present invention, the cable protection tube sample grinding device disclosed in the present embodiment further includes a pushing block 4, which is formed or fixed on a pushing block base 5, and a first driving system is arranged on the pushing block base 5, and the first driving system enables the pushing block base to move up and down, and also to move along the moving space formed by the guide bar; for example, the driving system may include a motor and a cylinder, so that the horizontal movement is completed by the motor and the chain, and the up and down movement is completed by the cylinder, and the pushing block base 5 is fixed on the first bracket 6 so that the pushing block is located above the corresponding sample moving space formed by the guide bar; a first sample grinding position (A) and a second sample grinding position (B) are arranged on the walking path formed by the guide bar, such as Figure 7 As shown in ; two pulley groups are arranged opposite to each other at the first grinding position, and the pulley group includes at least two wheels. In this embodiment, we can see that each pulley group includes three wheels, wherein the wheel located at the bottom is the first driven wheel 701, and the wheel located at the top is the second driven wheel 702. A buffer wheel 703 is also arranged between the first driven wheel and the second driven wheel, and the buffer wheel is arranged in a triangle with the first driven wheel and the second driven wheel. The buffer wheel can form a buffering effect on the rotation of the belt, ensuring that the belt rotates more smoothly. It can be seen that a driving wheel 8 is also arranged between the two first driven wheels arranged relatively to each other to drive the two first driven wheels to rotate simultaneously, and the two second driven wheels are correspondingly arranged on both sides of the sample moving space, and the workbench and guide strips corresponding to the second driven wheels are all blocked to ensure that the belt on the outer side of the pulley can directly contact the two sides of the sample; it should be understood that there is also a workbench as a support table 9 between the two second driven wheels 702, and the sample is supported by the support table and will not fall; a grinding wheel 10 is arranged at the second grinding position, and the grinding wheel is fixed on a support plate 11, and the support plate is connected to a second bracket 12 through a grinding wheel base, and a second driving system is arranged on the grinding wheel base, and the driving system enables the grinding wheel base to move up and down. When it moves downward and contacts the surface of the sample, the upper surface of the sample can be ground, and when it moves upward, it leaves the grinding position and moves upward until there is no interference with the push block, so that the sample continues to move forward under the action of the push block; in this embodiment, combined with Figure 4 It can be seen that the grinding wheels are arranged in groups of two. And in this embodiment, two groups of small grinding wheels are provided. It can also be seen that there is further a large grinding wheel 1001. The width of the large grinding wheel corresponds to the spacing between the third guide bar 203 and the fourth guide bar 204 to finish the grinding of the upper surface of a large-sized specimen; the width of the small grinding wheel corresponds to the spacing between the first guide bar 201 and the second guide bar 202 to finish the grinding of the upper surface of a small-sized specimen.

[0025] Further, in combination with Figures 1 to 6 , especially Figure 5 it can be seen that a cutting position is further provided on the traveling path formed by the guide bars in this embodiment. A cutting blade 13 is provided at the cutting position. The cutting blade 13 is installed under the workbench. A cutting slot matching the cutting blade is formed on the workbench. It is a circular blade, which is connected with a fourth driving system below and is lifted from bottom to top under the action of the fourth driving system and completes cutting during this process. The circular blade has a higher inclusiveness for the position of the sample, which can ensure the effectiveness of cutting; there is also a pressing column 14. The pressing column 14 is fixed on a pressing base 15. The pressing base 15 is fixed on a third bracket 16. The pressing base is provided with a third driving system. This driving system enables the pressing base to move up and down. When it moves downward, the pressing column acts on the specimen to ensure that the specimen does not displace during the cutting process. When it moves upward and lifts, the cut specimen can continue to move forward under the action of the pushing block. It should be understood that in order to ensure the movement of the pushing block after the pressing column is lifted, there should be no interference between it and the pushing block.

[0026] Further, in combination with Figures 1 to 6 it can be seen that there is also a specimen collection position. The specimen collection position includes a conveyor belt 17 lower than the workbench. A specimen collection box 18 is placed on the conveyor belt. The polished specimen falls into the specimen collection box and is transported by the conveyor belt to the next station.

[0027] Preferably, the conveyor belt is in a "C" shape, and the end of the guide bar corresponds to the horizontal section of the conveyor belt. The specimen collection box enters from the end of one vertical section and moves along this vertical section to the position corresponding to the end of the guide bar, then turns 90° to the horizontal section, collects the dropped specimen at the end of the guide bar, then turns 90° to the other vertical section, and outputs from the end of this vertical section to enter the next process.

[0028] Next, we will further explain how the present invention grinds and secondarily cuts the milled specimen in combination with the above mechanism.

[0029] First, the milled sample is placed in the corresponding size of the accommodation space formed by the guide strip, and then moves along the limited space formed by the guide strip under the action of the push block. When it reaches the first grinding position, the second driven wheel starts to rotate under the rotation of the driving wheel and the transmission of the first driven wheel and the buffer wheel, and the belt on its surface grinds the two sides of the sample. After the grinding is completed, the sample continues to move under the action of the push block and comes to the second grinding position. After the grinding wheel moves downward, it continuously grinds the upper surface of the sample through rotation.

[0030] Under the action of the pushing block, the specimen continues to move forward.

[0031] At this time, if it is a wide sample, it will not stop at the cutting position, but continue to move forward and fall from the end of the guide bar into the prepared collection box.

[0032] The second situation is that if it is a narrow specimen, considering that after cutting to the length required for the test, the overall specimen is too small, which is not conducive to the grinding of the sides and top in the grinding process, so in this case, we can cut it to a suitable length after grinding. At this time, the narrow specimen reaches the cutting position, the pressing column descends, presses the entire specimen, the cutting knife rises, and the specimen cutting is completed. The cut specimen continues to move forward under the action of the push block and falls into the prepared collection box at the end of the guide bar.

[0033] In this field, we can understand that the premise of sample grinding is to mill a suitable sample from a cable protection tube, and it also needs to be cleaned and dried after grinding before it can be used for testing. Therefore, the aforementioned cable protection tube sample grinding device can be combined with a cutting device, a cleaning device, and a drying device to form a fully automatic sample preparation line, thereby completing fully automatic sample preparation.

[0034] The above is a specific implementation of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. Cable protection tube sample grinding device, characterized by: It includes a workbench, on which guiding bars are arranged in parallel and in pairs, and a space for the specimen to move is formed between the guiding bars. It further includes a pushing block, which is formed or fixed on a pushing block base. A first driving system is arranged on the pushing block base, which enables the pushing block base to move up and down and also move along the moving space formed by the guiding bars; the pushing block base is fixed on a first bracket, and the pushing block is located above the specimen moving space formed by the guiding bars; a first grinding position and a second grinding position for the specimen are arranged on the walking path formed by the guiding bars; at the first grinding position, two pulley groups are arranged oppositely. Each pulley group includes at least two wheels. The wheel located below is the first driven wheel, and the wheel located above is the second driven wheel. A driving wheel is also arranged between the two oppositely arranged first driven wheels. The two second driven wheels are correspondingly arranged on both sides of the specimen moving space. The workbench and the guiding bars corresponding to the second driven wheels are both blocked by the second driven wheels. The belt outside the pulley is in direct contact with both sides of the specimen; the unblocked workbench between the two second driven wheels is the support table; at the second grinding position, a grinding wheel is arranged. The grinding wheel is fixed on a support plate, and the support plate is connected to a second bracket through a grinding wheel base. A second driving system is arranged on the grinding wheel base, which enables the grinding wheel base to move up and down; it also includes a specimen collection position, where the polished specimen is collected.

2. The cable protection tube sample grinding device according to claim 1 is characterized in that: At the specimen collection position, there is also a conveyor belt lower than the workbench, and a specimen collection box is placed on the conveyor belt; the polished specimen falls into the specimen collection box and is transported to the next station by the conveyor belt.

3. The cable protection tube sample grinding device according to claim 1 is characterized in that: There are two or more groups of corresponding guiding bars. The distance between each group of guiding bars corresponds to a specimen with a specific width, and the height of the outer guiding bar is greater than that of the inner guiding bar.

4. The cable protection tube sample grinding device according to claim 1, characterized in that: The pulley group also includes a buffer wheel, which is arranged in a triangle with the first driven wheel and the second driven wheel.

5. The cable protection tube sample grinding device according to claim 1, characterized in that: The grinding wheels are arranged in groups of two.

6. The cable protection tube sample grinding device according to claim 1 or 4, characterized in that: There are two or more groups of grinding wheels.

7. The cable protection tube sample grinding device according to claim 1, characterized in that: Large grinding wheels and small grinding wheels with different widths are provided.

8. The cable protection tube sample grinding device according to claim 1, characterized in that: The conveyor belt is in an "L" shape, and the end of the guiding bar corresponds to the horizontal section of the conveyor belt.

9. The cable protection tube sample grinding device according to claim 1, characterized in that: A cutting position is also arranged on the walking path formed by the guiding bars. A cutting blade is arranged at the cutting position. The cutting blade is installed below the workbench, and a cutting slit matching the cutting blade is formed on the workbench. The cutting blade is a circular blade, which is connected with a fourth driving system below and is lifted from bottom to top under the action of the fourth driving system, and the cutting is completed during this process. There is also a pressing column, which is fixed on a pressing base. The pressing base is fixed on a third bracket. A third driving system is arranged on the pressing base, which enables the pressing base to move up and down.

10. A full-automatic sample preparation production line including the cable protection pipe specimen grinding device according to any one of claims 1 to 9.

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