Workpiece dynamic length measuring device

Abstract

The utility model discloses a dynamic length measuring device for a workpiece, which belongs to the technical field of dynamic measurement and comprises a base, a hydraulic telescopic rod fixedly arranged on the upper end face of the base, a mounting plate fixedly arranged at the output end of the hydraulic telescopic rod, two bearing seats fixedly arranged on the upper end face of the mounting plate, and a rotating shaft rotatably connected inside the two bearing seats. A rolling shaft is coaxially and fixedly arranged on the rotating shaft located between the two bearing seats, and the left end of the rotating shaft is connected with an input shaft of an encoder. When the device is used and workpiece data needs to be measured, a production control center sends an ascending signal to the hydraulic telescopic rod, so that the hydraulic telescopic rod ascends, the rolling shaft is in contact with a workpiece above, and when the workpiece moves during machining, the workpiece drives the rolling shaft to rotate, and the encoder starts to rotate along with rotation of the rolling shaft to generate a data signal; when the workpiece data does not need to be measured, the production control center sends a descending signal to the hydraulic telescopic rod, so that the rolling shaft is separated from the workpiece; and the production control center carries out next-step processing according to the received pipe fitting length data transmitted by the encoder data processing system so as to realize the purpose of automatic dynamic measurement.

Description

Technical Field

[0001] The utility model belongs to the technical field of dynamic measurement, and in particular relates to a workpiece dynamic length measuring device. Background Art

[0002] Dynamic measurement: refers to the measurement method in which the measured quantity changes continuously with time during the measurement process.

[0003] In automated and intelligent production processes, dynamic and automatic length measurement of pipes or workpieces is required to provide data and facilitate the production of formulas with different functions. However, in some locations, conventional measurement methods are affected by environmental and spatial factors, making it impossible to perform measurement. In other locations, the workpiece needs to be repeatedly moved back and forth during measurement to ensure proper positioning. Furthermore, some workpieces are relatively heavy, and precise and compact electronic measuring equipment is easily damaged by stress, resulting in inaccuracies and instability. Conventional measurement methods also cannot meet these requirements.

[0004] After searching CN101852601A, a dynamic material length detection method is provided. A material flow tracking module is set to dynamically track the distance the material moves in the forward direction and calculate the current material count length value in real time. Multiple length calibration detection units are set up, each length calibration detection unit includes a calibration sensor for real-time detection of the length of the material at its current position; each length calibration detection unit determines the calibration length value currently triggered by the material in real time; a length calculation module is set to update the information of the current calibration sensor in real time. When the calibration sensor information is updated, the actual length of the current material is calculated. The present invention also discloses a measuring device for implementing the method. The present invention can effectively improve the measurement accuracy and the real-time control, saving production operation time.

[0005] Although the above solution can measure moving workpieces, it requires the installation of a large number of sensor modules, which increases the manufacturing cost of the equipment and is inconvenient to install. At the same time, the use environment has high requirements, such as space and temperature, and its use is limited. Utility Model Content

[0006] The purpose of the utility model is to provide a dynamic workpiece length measurement device, which can effectively convert the displacement of the workpiece during processing into an encoder data signal. By cooperating with the encoder data processing system and the production control center, it effectively solves the problems in the prior art of repeated forward and backward movement of the workpiece and the heavy workpiece that is difficult to measure.

[0007] The utility model adopts the following technical solution: a dynamic length measuring device for a workpiece, comprising a base, an upper end surface of the base fixedly provided with a hydraulic telescopic rod, an output end of the hydraulic telescopic rod fixedly provided with a mounting plate, an upper end surface of the mounting plate fixedly provided with two bearing seats, a rotating shaft rotatably connected inside the two bearing seats, a roller coaxially fixedly provided on the rotating shaft between the two bearing seats, and the left end of the rotating shaft being connected to the input shaft of an encoder.

[0008] Furthermore, a first support column is fixedly provided on the upper end surface of the base, a second support column is fixedly provided on the lower end surface of the mounting plate, and the second support column is slidably provided on the first support column along the up-down direction.

[0009] Furthermore, a sliding groove is provided on the side surface of the first support column along the up-down direction, and the second support column is located in the sliding groove of the first support column and is slidably arranged up and down with the first support column along the direction of the sliding groove of the first support column.

[0010] Furthermore, a side of the second support column close to the first support column is evenly provided with a plurality of transmission rollers along the up and down directions, each transmission roller is arranged on the second support column along the front and back directions, and each transmission roller is rotatably connected to the second support column.

[0011] Furthermore, the front and rear sides of the second support column are provided with guide grooves in the up and down directions, and the inner side wall of the slide groove of the first support column is fixed with a guide rail adapted to the guide groove in the up and down directions at a position corresponding to the guide groove.

[0012] Furthermore, a coupling is provided between the left end of the rotating shaft and the encoder, one end of the coupling is fixed to the input shaft of the encoder, and the other end of the coupling is fixed to the left end of the rotating shaft.

[0013] Furthermore, a support plate is fixedly provided on the upper end surface of the mounting plate, and the encoder is fixedly provided with the support plate.

[0014] Furthermore, an inner rod is fixedly provided at the output end of the hydraulic telescopic rod, an outer rod is sleeved on the top end of the inner rod, and a first spring is provided between the inner top wall of the outer rod and the upper end surface of the inner rod.

[0015] Furthermore, a limiting ring is coaxially fixedly provided on the lower part of the inner side wall of the outer rod, and an annular groove is provided on the outer surface of the inner rod, and the limiting ring is sleeved in the annular groove.

[0016] Furthermore, the outer surface of the roller is provided with concave lines.

[0017] 1. The utility model is provided with a hydraulic telescopic rod, a roller, and an encoder. When in use, when it is necessary to measure the workpiece data, the hydraulic telescopic rod sends an upward signal to make the hydraulic telescopic rod rise, so that the roller contacts the workpiece above. When the workpiece moves during processing, the workpiece drives the roller to rotate, and the encoder starts to rotate with the rotation of the roller and thus generates a data signal; when it is not necessary to measure the workpiece data, the hydraulic telescopic rod sends a downward signal to disengage the roller from the workpiece, and the roller and the encoder no longer rotate and no longer generate signal data; the above scheme achieves the purpose of dynamic measurement of the workpiece during the processing process by cooperating with the encoder data processing system and the production control center; specifically, the production control center controls the rise and fall of the hydraulic telescopic rod to achieve the purpose of workpiece measurement; the production control center performs the next step of processing, positioning, cutting or testing according to the pipe length data transmitted by the encoder data processing system, thereby realizing dynamic automatic measurement, automated production or intelligent production or testing, and achieving the purpose of automated dynamic measurement.

[0018] 2. The utility model is provided with a coupling, a roller, an encoder, an encoder data processing system and a production control center. When in use, the movement of the workpiece drives the roller to rotate, the roller drives the coupling to rotate through the rotating shaft, the rotation of the coupling drives the input shaft of the encoder to rotate, the encoder converts the rotation signal into a pulse signal, and the pulse signal is transmitted to the encoder data processing system through the first data line. The encoder data processing system converts the received pulse signal into length according to an existing algorithm formula to obtain the actual dynamic length value of the measured object. The production control center performs the next step of processing, positioning, truncation or testing according to the pipe length data transmitted by the encoder data processing system, thereby realizing dynamic automatic measurement, automated production or intelligent production or testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0020] Figure 2 This is a front view structural diagram of the utility model;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the roller in the utility model;

[0022] Figure 4 This is a three-dimensional structural diagram of the encoder, coupling and rotating shaft in the present invention in a separated state;

[0023] Figure 5 Schematic diagram of the three-dimensional structure of the coupling in this utility model;

[0024] Figure 6 This is a schematic diagram of the three-dimensional structure of the first support column in the present utility model;

[0025] Figure 7 This is a schematic diagram of the three-dimensional structure of the second support column and the first support column in the present invention in a separated state;

[0026] Figure 8 This is a schematic diagram of the three-dimensional structure of the inner part of the outer rod in the present utility model;

[0027] Figure 9 This is a schematic diagram of the three-dimensional structure of the inner rod in the utility model;

[0028] Figure 10 This is a schematic diagram of the internal structure of the inner rod in the utility model;

[0029] Figure 11 This is a flow chart of the encoder, encoder data processing system and production control center in the utility model.

[0030] In the figure, 1. base; 2. hydraulic telescopic rod; 3. mounting plate; 4. bearing seat; 5. rotating shaft; 6. roller; 7. encoder; 8. first support column; 9. second support column; 10. slide groove; 11. transmission roller; 12. guide groove; 13. guide rail; 14. coupling; 15. first data line; 16. support plate; 17. inner rod; 18. outer rod; 19. first spring; 21. limit ring; 22. ring groove; 25. fixing block; 26. connecting rod. DETAILED DESCRIPTION

[0031] See also Figure 1-11 The present invention will be described in detail below with reference to the accompanying drawings and embodiments:

[0032] The dynamic workpiece length measurement device of the present invention comprises a base 1, a hydraulic telescopic rod 2 being fixedly provided on the upper end surface of the base 1, a mounting plate 3 being fixedly provided on the output end of the hydraulic telescopic rod 2, two bearing seats 4 being fixedly provided on the upper end surface of the mounting plate 3, a rotating shaft 5 being rotatably connected to the interior of the two bearing seats 4, a roller 6 being coaxially fixedly provided on the rotating shaft 5 located between the two bearing seats 4, the left end of the rotating shaft 5 being connected to the input shaft of an encoder 7; and an encoder data processing system and a production control center are also included.

[0033] When the roller 6 rotates, the encoder 7 transmits the pulse signal generated inside the encoder 7 to the encoder data processing system;

[0034] The encoder data processing system is used to receive the data from the encoder 7 and convert the received data into length according to the existing algorithm formula to obtain the actual dynamic length value of the measured object;

[0035] In actual production, the workpiece to be processed is fixed on a fixing device, which is fixed on a moving device. The moving device drives the workpiece to move as needed, and processes the workpiece at the same time, such as cutting, and then continues to move. The base 1, hydraulic telescopic rod 2 and roller 6 are set below the workpiece. According to actual production needs, when the workpiece data needs to be measured, the production control center sends an upward signal to the hydraulic telescopic rod 2, causing the hydraulic telescopic rod 2 to rise, so that the roller 6 contacts the workpiece above. When the workpiece moves during processing, the workpiece drives the roller 6 to rotate, and the encoder 7 starts to rotate with the rotation of the roller 6 and thus generates a data signal. When the workpiece data does not need to be measured, the production control center sends a downward signal to the hydraulic telescopic rod 2, so that the roller 6 is disengaged from the workpiece, and the roller 6 and encoder 7 no longer rotate and no longer generate signal data. The production control center performs the next step of processing, positioning, cutting or testing based on the pipe length data transmitted by the encoder data processing system, thereby realizing dynamic automatic measurement, automated production or intelligent production or testing.

[0036] In this embodiment, the outer surface of the roller 6 is provided with concave lines. When the workpiece is moved, the workpiece drives the roller 6 to rotate, and the concave lines on the outer surface of the roller 6 increase the friction force at the contact point with the workpiece.

[0037] In order to achieve the purpose of increasing the stability of the up and down movement of the mounting plate 3, in this embodiment, a first support column 8 is fixedly provided on the upper end surface of the base 1, and a second support column 9 is fixedly provided on the lower end surface of the mounting plate 3, and the second support column 9 is slidably provided on the first support column 8 along the up and down directions; when the hydraulic telescopic rod 2 pushes the mounting plate 3 to move up and down, the second support column 9 slides up and down on the first support column 8, thereby increasing the stability of the up and down movement of the mounting plate 3 and increasing the supporting force of the mounting plate 3.

[0038] In this embodiment, a sliding groove 10 is opened on the side of the first support column 8 along the up and down directions, the second support column 9 is located in the sliding groove 10 of the first support column 8 and is set to slide up and down with the first support column 8 along the direction of the sliding groove 10 of the first support column 8; when the mounting plate 3 moves up and down, the second support column 9 slides up and down in the sliding groove 10 of the first support column 8.

[0039] In this embodiment, a side surface of the second support column 9 close to the first support column 8 is evenly provided with several transmission rollers 11 along the up and down directions, and each transmission roller 11 is arranged on the second support column 9 along the front and back directions, and each transmission roller 11 is rotatably connected to the second support column 9; when the mounting plate 3 moves up and down, it drives the second support column 9 to slide up and down in the slide groove 10 of the first support column 8, and at the same time, the transmission roller 11 of the second support column 9 rotates, reducing the friction resistance between the first support column 8 and the second support column 9.

[0040] In this embodiment, guide grooves 12 are provided on the front and rear side surfaces of the second support column 9 along the up and down directions, and guide rails 13 adapted to the guide grooves 12 are fixedly provided on the inner side walls of the slide grooves 10 of the first support column 8 at positions corresponding to the guide grooves 12 along the up and down directions; when the mounting plate 3 moves up and down, it drives the second support column 9 to slide up and down in the slide grooves 10 of the first support column 8, and at the same time, the guide rails 13 of the second support column 9 slide up and down in the corresponding guide grooves 12, further increasing the stability of the up and down movement of the second support column 9.

[0041] In this embodiment, there are two first support columns 8 and two second support columns 9 , and the two first support columns 8 are arranged on both sides of the hydraulic telescopic rod 2 .

[0042] In this embodiment, a coupling 14 is provided between the left end of the rotating shaft 5 and the encoder 7, one end of the coupling 14 is fixed to the input shaft of the encoder 7, and the other end of the coupling 14 is fixed to the left end of the rotating shaft 5; the mounting plate 3 moves upward to drive the roller 6 to move upward. When the length of the moving workpiece is measured, the movement of the workpiece drives the roller 6 to rotate, and the roller 6 drives the coupling 14 to rotate through the rotating shaft 5. The rotation of the coupling 14 drives the input shaft of the encoder 7 to rotate, and the encoder 7 converts the rotation signal into a pulse signal. The pulse signal is transmitted to the encoder data processing system through the first data line 15. The encoder data processing system converts the received pulse signal into length according to the existing algorithm formula to obtain the actual dynamic length value of the measured object. The production control center performs the next step of processing, positioning, truncation or testing based on the pipe length data transmitted by the encoder data processing system, thereby realizing dynamic automatic measurement, automated production or intelligent production or testing.

[0043] In this embodiment, a support plate 16 is fixedly provided on the upper end surface of the mounting plate 3 , and the encoder 7 is fixedly provided on the support plate 16 , thereby keeping the encoder 7 body fixed.

[0044] In actual use, the position of the workpiece is not always horizontal, which makes it difficult to control the contact force between the roller 6 and the workpiece. If the contact force between the roller 6 and the workpiece is too small, the rotation of the roller 6 and the movement of the workpiece may be out of sync, resulting in errors in the measurement data. If the contact force between the roller 6 and the workpiece is too large, the roller 6 may be damaged. In order to solve the above technical problems, in this embodiment, an inner rod 17 is fixedly provided at the output end of the hydraulic telescopic rod 2, and an outer rod 18 is sleeved on the top end of the inner rod 17. A first spring 19 is provided between the inner top wall of the outer rod 18 and the upper end surface of the inner rod 17.

[0045] In this embodiment, a limit ring 21 is coaxially fixed to the lower part of the inner wall of the outer rod 18, and an annular groove 22 is opened on the outer surface of the inner rod 17, and the limit ring 21 is sleeved in the annular groove 22; in the normal state without force, the first spring 19 drives the outer rod 18 to move upward and drives the limit ring 21 to move upward in the annular groove 22 until the limit ring 21 is limited by the inner top wall of the annular groove 22. At this time, the first spring 19 is in a compressed state; in use, when it is necessary to measure the workpiece data, the production control center sends an upward signal to the hydraulic telescopic rod 2, causing the hydraulic telescopic rod 2 to rise, so that the roller 6 contacts the workpiece above. At this time, the outer rod 18 is compressed and moves downward on the inner rod 17, causing the first spring 19 to be further compressed. In the process of testing the workpiece, the workpiece is supported and moved during processing, and the workpiece drives the roller 6 to rotate, and the moving length of the workpiece is measured; in the process of movement of the workpiece, further pressure on the roller 6 may be generated due to various reasons, or the outer surface of the workpiece in contact with the roller 6 may be lifted up. At this time, the first spring 19 will keep the outer rod 18 in effective contact with the outer surface of the roller 6 at all times by telescoping, and the contact force between the outer rod 18 and the roller 6 is maintained within the set range.

[0046] In this embodiment, a accommodating cavity is opened in the upper part of the inner rod 17, and a fixing block 25 is fixedly arranged in the accommodating cavity. A connecting rod 26 is fixedly arranged on the upper end surface of the fixing block 25. The connecting rod 26 passes upward through the inner top wall of the accommodating cavity and is fixed to the bottom end of the first spring 19; the bottom end of the first spring 19 is fixedly connected to the top end of the inner rod 17 through the connecting rod 26 and the fixing block 25.

[0047] The working principle of the present utility model is as follows: according to actual production needs, when it is necessary to measure the workpiece data, the production control center sends an upward signal to the hydraulic telescopic rod 2, so that the hydraulic telescopic rod 2 rises, so that the roller 6 contacts the workpiece above, and when the workpiece moves during processing, the workpiece drives the roller 6 to rotate, and the encoder 7 starts to rotate with the rotation of the roller 6 and thus generates a data signal; when it is not necessary to measure the workpiece data, the production control center sends a downward signal to the hydraulic telescopic rod 2, so that the roller 6 is disengaged from the workpiece, and the roller 6 and the encoder 7 no longer rotate and no longer generate signal data; the production control center performs the next step of processing, positioning, cutting or testing according to the pipe length data transmitted by the encoder 7 processing system, thereby realizing dynamic automatic measurement, automated production or intelligent production or testing.

Claims

1. A workpiece dynamic length measuring device, comprising a base (1), characterized in that: A hydraulic telescopic rod (2) is fixedly provided on the upper end surface of the base (1), a mounting plate (3) is fixedly provided on the output end of the hydraulic telescopic rod (2), two bearing seats (4) are fixedly provided on the upper end surface of the mounting plate (3), a rotating shaft (5) is rotatably connected inside the two bearing seats (4), a roller (6) is coaxially fixedly provided on the rotating shaft (5) located between the two bearing seats (4), and the left end of the rotating shaft (5) is connected to the input shaft of the encoder (7).

2. The workpiece dynamic length measuring device according to claim 1, characterized in that: A first support column (8) is fixedly provided on the upper end surface of the base (1), a second support column (9) is fixedly provided on the lower end surface of the mounting plate (3), and the second support column (9) is slidably provided on the first support column (8) in an up-down direction.

3. The workpiece dynamic length measuring device according to claim 2, characterized in that: A sliding groove (10) is provided on the side surface of the first support column (8) in the up-down direction, and the second support column (9) is located in the sliding groove (10) of the first support column (8) and is slidably arranged up and down with the first support column (8) along the direction of the sliding groove (10) of the first support column (8).

4. The workpiece dynamic length measuring device according to claim 3, characterized in that: A plurality of transmission rollers (11) are evenly arranged along the up-down direction on a side surface of the second support column (9) close to the first support column (8), and each transmission roller (11) is arranged on the second support column (9) along the front-back direction, and each transmission roller (11) is rotatably connected to the second support column (9).

5. The workpiece dynamic length measuring device according to claim 4, characterized in that: The front and rear side surfaces of the second support column (9) are provided with guide grooves (12) in the up-down direction, and the inner side wall of the slide groove (10) of the first support column (8) is fixedly provided with a guide rail (13) adapted to the guide groove (12) in the up-down direction at a position corresponding to the guide groove (12).

6. The workpiece dynamic length measuring device according to claim 1, characterized in that: A coupling (14) is provided between the left end of the rotating shaft (5) and the encoder (7), one end of the coupling (14) is fixedly provided with the input shaft of the encoder (7), and the other end of the coupling (14) is fixedly provided with the left end of the rotating shaft (5).

7. The workpiece dynamic length measuring device according to claim 1, characterized in that: A support plate (16) is fixedly provided on the upper end surface of the mounting plate (3), and the encoder (7) and the support plate (16) are fixedly provided.

8. The workpiece dynamic length measuring device according to claim 1, characterized in that: An inner rod (17) is fixedly provided at the output end of the hydraulic telescopic rod (2), an outer rod (18) is sleeved on the top end of the inner rod (17), and a first spring (19) is provided between the inner top wall of the outer rod (18) and the upper end surface of the inner rod (17).

9. The workpiece dynamic length measuring device according to claim 8, characterized in that: A limiting ring (21) is coaxially fixedly provided on the lower portion of the inner side wall of the outer rod (18), and an annular groove (22) is provided on the outer surface of the inner rod (17), and the limiting ring (21) is sleeved in the annular groove (22).

10. The workpiece dynamic length measuring device according to claim 1, characterized in that: The outer surface of the roller (6) is provided with concave lines.

Images