Length measuring device and laser processing equipment
By combining a base, a limiting mechanism, a ranging mechanism, and an adjusting mechanism, the problem of cumbersome and costly pipe length measurement in laser pipe cutting machines is solved, achieving automated and low-cost pipe length measurement that can adapt to pipes of different lengths.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-03-10
AI Technical Summary
In existing laser tube cutting machines, the equipment must accurately know the length of the raw tube material in order to carry out subsequent cutting processes, but traditional measurement methods are cumbersome and costly.
By combining a base, limiting mechanism, ranging mechanism and adjusting mechanism, the pipe length is measured through limiting component, holding component, driving component and sensor. Combined with multi-position cylinder and magnetic scale, it realizes automated and low-cost length measurement.
It simplifies the measurement process, reduces equipment costs, expands the scope of application, improves measurement accuracy and stability, and is suitable for pipes of different lengths.
Smart Images
Figure CN223985693U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automated equipment, and in particular to a length measuring device and a laser processing equipment. Background Technology
[0002] In existing laser tube cutting machines, the equipment must accurately know the length of the raw tube material before proceeding with subsequent cutting processes. In practice, after the tube is fed by the feeding mechanism, it needs to be measured. Traditionally, this is done manually or by using a linear servo motor to drive the measuring head along the tube. The length of the tube is obtained by acquiring the coordinates of the signal changes generated when the measuring head passes through both ends of the tube, and performing simple calculations. However, this process is cumbersome and the equipment cost is relatively high. Utility Model Content
[0003] This application proposes a length measuring device and laser processing equipment, which can solve the problem of high equipment cost of length measuring devices in laser processing equipment.
[0004] This application proposes a length measuring device, comprising:
[0005] Base, used to mount the workpiece;
[0006] The limiting mechanism includes a limiting element disposed on the base;
[0007] The ranging mechanism includes a holding member disposed on one side of the limiting member, a first driving member for driving the holding member to move toward or away from the limiting member, and a sensor; the driving direction of the first driving member is along a first direction, the holding member has a first position away from the limiting member, and a second position for clamping the workpiece together with the limiting member; the sensor is used to measure the distance between the first position and the second position.
[0008] An adjustment mechanism is used to adjust the position of the limiting member in the first direction.
[0009] In some embodiments, the first driving member includes a first cylinder, and the adjusting mechanism includes a multi-position cylinder that is drivenly connected to the abutment member and the driving direction is along a first direction; the multi-position cylinder is used to drive the abutment member to move and stop at different positions.
[0010] In some embodiments, the sensor includes a pull rope displacement sensor, which is disposed on one side of the first drive member, and the end of the rope is connected to the abutment member.
[0011] In some embodiments, the sensor includes a magnetic scale disposed on the base and a reading head disposed on the abutment, the magnetic scale being disposed along the first direction.
[0012] In some embodiments, the length measuring device further includes a clamping mechanism disposed on the base, the clamping mechanism being used to clamp a workpiece along a second direction, the clamping mechanism including a roller for clamping the workpiece, and a first drive assembly for driving the roller to open and close along the second direction.
[0013] In some embodiments, the clamping mechanism includes a first mounting bracket connected to the base, the roller being slidably connected to the first mounting bracket along the second direction, and the first drive assembly including a second cylinder with a drive direction along the third direction, and a connecting rod connecting the drive end of the second cylinder and the roller.
[0014] In some embodiments, the adjustment mechanism includes a second mounting bracket that is slidably connected to the base along a first direction, the limiting member is disposed on the second mounting bracket, and the multi-position cylinder is disposed on the base and one end is connected to the first mounting bracket.
[0015] In some embodiments, the clamping mechanism further includes a limiting roller disposed on one side of the roller, the limiting roller and the roller being arranged along a third direction; a loading port for the workpiece to enter is formed on the side of the roller away from the limiting roller.
[0016] In some embodiments, the first mounting bracket is mounted on the second mounting bracket and is slidably connected to the second mounting bracket along a third direction; the length measuring device further includes a second driving component mounted on the second mounting bracket and drivenly connected to the first mounting bracket, the second driving component being used to drive the first mounting bracket to move along the third direction.
[0017] This application also proposes a laser processing device, including a length measuring device and a laser processing apparatus disposed on one side of the length measuring device.
[0018] The length measuring device and laser processing equipment in this application embodiment include a base, a limiting mechanism, a ranging mechanism, and an adjusting mechanism. The base is used to mount the workpiece. The limiting mechanism includes a limiting member disposed on the base. The ranging mechanism includes a supporting member disposed on one side of the limiting member, a first driving member for driving the supporting member to move toward or away from the limiting member, and a sensor. The driving direction of the first driving member is along a first direction. The supporting member has a first position away from the limiting member and a second position that clamps the workpiece together with the limiting member. The sensor is used to measure the distance L between the first position and the second position. The length of the workpiece can be obtained by subtracting L from the initial distance between the limiting member and the supporting member. In addition, the adjusting mechanism is used to adjust the position of the limiting member in the first direction to adapt to workpieces of different length ranges, thereby expanding the applicability of this device. Attached Figure Description
[0019] Figure 1This is a schematic diagram of the length measuring device in one embodiment of this application;
[0020] Figure 2 for Figure 1 A schematic diagram of the clamping mechanism in the embodiment;
[0021] Figure 3 This is a schematic diagram of the clamping mechanism in another embodiment of this application;
[0022] Figure 4 for Figure 1 A schematic diagram of the ranging mechanism in the embodiment.
[0023] Label Explanation:
[0024] 10. Base; 20. Clamping mechanism; 21. First mounting bracket; 22. First slider; 23. Roller; 24. Connecting rod; 25. Second cylinder; 26. Limiting roller; 30. Limiting mechanism; 31. Limiting component; 40. Adjusting mechanism; 41. Second mounting bracket; 42. Multi-position cylinder; 50. Distance measuring mechanism; 51. Third mounting bracket; 52. Supporting component; 53. First driving component; 54. Sensor; 60. Second driving assembly.
[0025] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0026] The solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments in this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0027] It should be noted that all directional indications in the embodiments of this application, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.
[0028] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.
[0029] Furthermore, the descriptions involving "first," "second," etc., in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.
[0030] This application proposes a length measuring device, referring to... Figures 1 to 4 The device includes: a base 10 for mounting a workpiece; a limiting mechanism 30 including a limiting member 31 disposed on the base 10; a ranging mechanism 50 including a supporting member 52 disposed on one side of the limiting member 31, a first driving member 53 for driving the supporting member 52 to move toward or away from the limiting member 31, and a sensor 54; the driving direction of the first driving member 53 is along a first direction, the supporting member 52 has a first position away from the limiting member 31, and a second position that clamps the workpiece together with the limiting member 31; the sensor 54 is used to measure the distance between the first position and the second position; and an adjusting mechanism 40 for adjusting the position of the limiting member 31 in the first direction.
[0031] In this embodiment, the length measuring device and laser processing equipment include a base 10, a limiting mechanism 30, a ranging mechanism 50, and an adjusting mechanism 40. The base 10 is used to mount the workpiece, specifically, the workpiece can be directly placed on the base 10. The limiting mechanism 30 includes a limiting member 31 disposed on the base 10. The ranging mechanism 50 includes a supporting member 52 disposed on one side of the limiting member 31, a first driving member 53 for driving the supporting member 52 to move toward or away from the limiting member 31, and a sensor 54. The driving direction of the first driving member 53 is along a first direction. The supporting member 52 has a first position away from the limiting member 31 and a second position that clamps the workpiece together with the limiting member 31. The sensor 54 is used to measure the distance L between the first position and the second position. Specifically, a displacement sensor 54, such as a grating ruler, can be used. The length of the workpiece can be obtained by subtracting L from the initial distance between the limiting member 31 and the supporting member 52. In addition, the adjusting mechanism 40 is used to adjust the position of the limiting member 31 in the first direction to adapt to workpieces of different length ranges, thereby expanding the applicability of this device. The adjustment mechanism 40 is used for adjustment before length measurement to accommodate pipe fittings that are too long or too short. For example, the adjustment mechanism 40 can have multiple positions. If some pipe fittings are too long or too short, the position of the limiting member 31 needs to be adjusted by the adjustment mechanism 40 so that when one end of the workpiece abuts against the limiting member 31, the other end is within the range of motion of the abutting member 52.
[0032] Specifically, multiple mounting holes can be provided on the base 10 along the first direction. These mounting holes are used to fix the limiting member 31. Screws can be used to fasten the supporting member 52 to the base 10. To adjust the position of the limiting member 31, it can be locked together with different mounting holes to accommodate workpieces of different lengths. When measuring the length of a longer pipe, the limiting member 31 can be installed in a mounting hole farther from the supporting member 52. Of course, after each adjustment of the limiting member 31's position, the distance between it and the supporting member 52 at the first position needs to be reset in the system to ensure the accuracy of the measurement results.
[0033] In some embodiments, the first driving member 53 includes a first cylinder, and the adjusting mechanism 40 includes a multi-position cylinder 42 drivenly connected to the abutment member 52, with the driving direction along a first direction. The multi-position cylinder 42 is used to drive the abutment member 52 to move and stop at different positions. The cylinder can maintain a relatively constant thrust. Setting the first cylinder ensures that the abutment member 52 and the limiting member 31 can stably clamp both ends of the workpiece, and the material cost of the cylinder is also lower. Setting the multi-position cylinder 42 as the adjusting mechanism 40 allows the limiting member 31 to have multiple positions in the first direction, enabling the length measuring device in this embodiment to adapt to workpieces of different length ranges, expanding the scope of application, and making the operation simpler and the equipment cost lower. Of course, the multi-position cylinder 42 can also be replaced by an electric cylinder for stepless adjustment.
[0034] In some embodiments, sensor 54 includes a pull-cord displacement sensor 54, which is disposed on one side of the first drive member 53, with the end of the cord connected to the abutment member 52. In this embodiment, the ranging mechanism 50 includes a third mounting bracket 53 disposed on the base 10, the first drive member 53 (first cylinder) is disposed on the third mounting bracket 53, and the free end of the push rod is disposed towards the limiting member 31, while the abutment member 52 is disposed at the end of the push rod. The pull-cord displacement sensor 54 is disposed on the third mounting bracket 53 and is located on one side of the cylinder body of the first cylinder. When the push rod of the first cylinder is fully retracted, the abutment member 52 is located in the first position. The pull cord of the pull-cord displacement sensor 54 is fully retracted, and the end of the cord is connected to the abutment member 52. When the push rod extends, it drives the pull cord to be pulled out, and the length of the pulled cord is the distance L between the abutment member 52 from the first position to the second position, which is the distance at which the abutment member 52 is located. The data measured by the pull-cord displacement sensor 54 can be transmitted to the control system for subsequent calculation of the length of the workpiece. The drawstring displacement sensor 54 has low material cost, high accuracy, and strong stability, which can ensure the accuracy of measurement data.
[0035] In some embodiments, the sensor 54 includes a magnetic scale disposed on the base 10 and a reading head disposed on the support member 52, the magnetic scale being arranged along a first direction. A magnetic scale is a sensor 54 device that uses the principle of magnetic fields for position measurement, and is widely used in industrial automation, CNC machine tools, robotics, and other fields. It represents position information by recording specific patterns of magnetic field polarity changes on a magnetic scale. When the reading head moves along the magnetic scale, it can detect these changes and convert them into electrical signals for output, thereby achieving accurate position measurement. The main components of the magnetic scale include the magnetic scale and the reading head. The magnetic scale is typically made of a series of regularly arranged magnetic materials to generate a stable magnetic field distribution; the reading head is responsible for detecting changes in these magnetic fields and converting the physical position into an electrical signal. Compared to other types of displacement sensors 54 (such as optical encoders), magnetic scales have advantages such as strong resistance to contamination and low requirements for the working environment, making them particularly suitable for use in harsh working environments.
[0036] In some embodiments, the length measuring device further includes a clamping mechanism 20 disposed on the base 10. The clamping mechanism 20 is used to clamp the workpiece along a second direction. The clamping mechanism 20 includes rollers 23 for clamping the workpiece and a first driving component for driving the rollers 23 to open and close along the second direction. In this embodiment, the second direction may be along the vertical direction, and the clamping mechanism 20 includes at least a pair of rollers 23 spaced apart along the vertical direction. The first driving component may be a cylinder that corresponds one-to-one with the rollers 23 on the upper and lower sides. The cylinder drives the rollers 23 on both sides to move towards each other, thereby clamping the cylinder. The workpiece is clamped between the rollers 23. When moving, the rollers 23 provide support and reduce the friction during movement. The rollers 23 also play a certain guiding role. In addition, the workpiece is limited when clamped from the top and bottom, and is not easy to fall off when clamped at both ends.
[0037] In some embodiments, the clamping mechanism 20 includes a first mounting bracket 21 connected to the base 10, a roller 23 slidably connected to the first mounting bracket 21 along a second direction, and a first driving assembly including a second cylinder 25 with a driving direction along a third direction, and a connecting rod 24 connecting the driving end of the second cylinder 25 and the roller 23. In this embodiment, two first sliders 22 are arranged on the first mounting bracket 21 along the second direction, and the roller 23 is rotatably arranged on each of the two first sliders 22. A second slider is also slidably arranged on the first mounting bracket, located on one side of the first slider 22, and the sliding direction of the second slider is along a third direction. The end of the push rod of the second cylinder 25 is hinged to the second slider, and the other two first sliders 22 are respectively hinged to the second sliders through the connecting rods 24, with the second sliders centrally located. The second cylinder 25 drives the second slider to move along a third direction, which can drive the two first sliders 22 to move towards or away from each other, thereby realizing the opening and closing of the roller 23 to clamp the pipe. It is worth noting that the first drive assembly uses a single drive source and the transmission of two connecting rods 24 to achieve synchronous and directional drive of the roller 23, which is simple in structure and low in equipment cost.
[0038] In some embodiments, the adjusting mechanism 40 includes a second mounting bracket 41 slidably connected to the base 10 along a first direction, a limiting member 31 disposed on the second mounting bracket 41, and a multi-position cylinder 42 disposed on the base 10 with one end connected to the first mounting bracket 21. The clamping mechanism 20 also includes a limiting roller 26 disposed on one side of the roller 23, the limiting roller 26 and the roller 23 being arranged along a third direction; a loading port for the workpiece is formed on the side of the roller 23 away from the limiting roller 26. In this embodiment, the length direction of the limiting roller 26 is along the second direction, and the workpiece enters between the two rollers 23 from the loading port and contacts the limiting roller 26. Thus, the workpiece is limited in both the second and third directions, ensuring that no lateral displacement occurs in the subsequent length measurement process. In addition, the setting of the limiting roller 26 can also play a certain guiding role and reduce the friction between the pipe and the device.
[0039] In some embodiments, the first mounting bracket 21 is disposed on the second mounting bracket 41 and slidably connected to the second mounting bracket 41 along a third direction; the length measuring device further includes a second driving component 60 disposed on the second mounting bracket 41 and drivenly connected to the first mounting bracket 21, the second driving component 60 being used to drive the first mounting bracket 21 to move along a third direction. In this embodiment, the above-mentioned loading port can be used for loading and unloading, that is, the pipe fitting can enter or exit the clamping mechanism 20 from the above-mentioned loading port. The second driving component 60 can be set so that the clamping mechanism 20 as a whole moves along a third direction. Specifically, the first mounting bracket 21 can be slidably disposed on the second mounting bracket 41, and a rack along a third direction can be provided on the first mounting bracket 21. At the same time, a stepper motor can be provided on the second mounting bracket 41, and a gear meshing with the rack can be provided on the rotating shaft of the stepper motor. The rotation of the gear can drive the rack and the clamping mechanism 20 to move as a whole.
[0040] It is worth noting that multiple clamping mechanisms 20 can be provided on the base 10 to clamp various sections of the workpiece, ensuring that the workpiece is supported in its length direction and reducing measurement errors caused by bending deformation due to gravity. It is also worth noting that the first mounting bracket 21 can be directly fixedly mounted on the base 10, and when there is a requirement for lateral movement in a third direction, the first mounting bracket 21 can be slidably connected to the second mounting bracket 41.
[0041] This application also proposes a laser processing device, including a length measuring device and a laser processing apparatus disposed on one side of the length measuring device. Specifically, the laser processing apparatus may include clamps disposed at both ends of the base 10, the clamps being used to hold the pipe and drive the pipe to rotate, and a laser cutting head disposed on one side of the clamps, the laser cutting head being used to cut the pipe.
[0042] In this embodiment, the working principle of the length measuring device and the laser processing equipment is as follows:
[0043] The length measuring device and laser processing equipment include a base 10, a limiting mechanism 30, a ranging mechanism 50, and an adjusting mechanism 40. The base 10 is used to mount the workpiece. The limiting mechanism 30 includes a limiting member 31 disposed on the base 10. The ranging mechanism 50 includes a supporting member 52 disposed on one side of the limiting member 31, a first driving member 53 for driving the supporting member 52 to move toward or away from the limiting member 31, and a sensor 54. The driving direction of the first driving member 53 is along a first direction. The supporting member 52 has a first position away from the limiting member 31 and a second position that clamps the workpiece together with the limiting member 31. The sensor 54 is used to measure the distance L between the first position and the second position. The length of the workpiece can be obtained by subtracting L from the initial distance between the limiting member 31 and the supporting member 52. In addition, the adjusting mechanism 40 is used to adjust the position of the limiting member 31 in the first direction to adapt to workpieces of different length ranges, thereby expanding the applicability of this device.
[0044] The above are only some or preferred embodiments of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.
Claims
1. A length measuring device, characterized in that include: Base, used to mount the workpiece; The limiting mechanism includes a limiting element disposed on the base; The ranging mechanism includes a holding member disposed on one side of the limiting member, a first driving member for driving the holding member to move toward or away from the limiting member, and a sensor; the driving direction of the first driving member is along a first direction, the holding member has a first position away from the limiting member, and a second position for clamping the workpiece together with the limiting member; the sensor is used to measure the distance between the first position and the second position. An adjustment mechanism is used to adjust the position of the limiting member in the first direction.
2. The length measuring device according to claim 1, characterized in that The first driving member includes a first cylinder, and the adjusting mechanism includes a multi-position cylinder that is drivenly connected to the abutment member, and the driving direction is along a first direction; the multi-position cylinder is used to drive the abutment member to move and stop at different positions.
3. The length measuring device of claim 2, wherein The sensor includes a pull rope displacement sensor, which is located on one side of the first driving member, and the end of the rope is connected to the abutment member.
4. The length measuring device of claim 2, wherein The sensor includes a magnetic scale disposed on the base and a reading head disposed on the support member, the magnetic scale being arranged along the first direction.
5. The length measuring device of claim 2, wherein The length measuring device further includes a clamping mechanism disposed on the base, the clamping mechanism being used to clamp the workpiece along the second direction, the clamping mechanism including a roller for clamping the workpiece, and a first driving component for driving the roller to open and close along the second direction.
6. The length measuring device of claim 5, wherein The clamping mechanism includes a first mounting bracket connected to the base, the roller being slidably connected to the first mounting bracket along the second direction, and the first driving assembly including a second cylinder with a driving direction along the third direction, and a connecting rod connecting the driving end of the second cylinder and the roller.
7. The length measuring device of claim 6, wherein The adjustment mechanism includes a second mounting bracket that is slidably connected to the base along a first direction, the limiting member is disposed on the second mounting bracket, and the multi-position cylinder is disposed on the base with one end connected to the first mounting bracket.
8. The length measuring device of claim 7, wherein The clamping mechanism also includes a limiting roller disposed on one side of the roller, the limiting roller and the roller being arranged along a third direction; a loading port for the workpiece is formed on the side of the roller away from the limiting roller.
9. The length measuring device of claim 8, wherein The first mounting bracket is mounted on the second mounting bracket and is slidably connected to the second mounting bracket along a third direction; the length measuring device further includes a second driving component mounted on the second mounting bracket and drivenly connected to the first mounting bracket, the second driving component being used to drive the first mounting bracket to move along the third direction.
10. A laser processing apparatus characterized by comprising: It includes the length measuring device according to any one of claims 1 to 9, and a laser processing device disposed on one side of the length measuring device.