Feeding device for a laser diameter measuring instrument

Abstract

The utility model belongs to the technical field of detection equipment, concretely relates to a kind of feeding device of laser diameter gauge, including matching platform surface, linear guide rail is erected on the matching platform surface, the linear guide rail is provided with feeding support in length direction one end, material detection passage parallel with the linear guide rail length direction is provided in the feeding support, the linear guide rail upside is provided with the clamping assembly moving along the material detection passage axis, the downside of the linear guide rail is provided with traction assembly and the transmission connection of clamping assembly.In the detection area of material, that is, material detection passage, feeding support is provided, material can be constrained in fixed detection position to prevent bending and twisting, so that material is always axially aligned with detection passage, while allowing traction assembly and clamping assembly to pull material through material detection passage stably, ensure the data accuracy of laser emission unit in continuous measurement process.

Description

Technical Field

[0001] This utility model belongs to the field of testing equipment technology, specifically relating to a feeding device for a laser diameter measuring instrument. Background Technology

[0002] The laser scanning diameter measuring instrument system uses a laser beam that passes through a multi-faceted scanning rotating mirror and a scanning optical system to form a continuous high-speed scanning beam parallel to the optical axis. This beam scans the workpiece placed in the measurement area at high speed and is received by a photodetector placed opposite the workpiece. The light projected onto the photodetector is blocked when the beam scans the workpiece, so by analyzing the signal output by the photodetector, data related to the diameter of the workpiece can be obtained.

[0003] A high-precision outer diameter detection device disclosed in patent CN209310746U includes a worktable and a laser diameter gauge. The worktable is equipped with a support frame for placing the product to be tested. The support frame is equipped with a drive component that drives the product to be tested to rotate. The laser diameter gauge is slidably connected to the worktable along the axial direction of the product to be tested. In this way, during the detection process, the drive component continuously drives the product to be tested to rotate, so that the outer diameter at various positions on its circumference can be detected accordingly. Moreover, by moving the laser diameter gauge axially, the outer diameter at different positions on the axial direction of the product can be detected, thereby achieving comprehensive detection of the outer circumference of the product to be tested. At the same time, the rotation process also simulates the actual working conditions of a conductive foamed rubber roller, thus making the detection data more accurate than the actual situation.

[0004] In the above scheme, although the driving component can make the product under test rotate circumferentially to achieve the effect of omnidirectional diameter detection, the product under test lacks a positioning structure, which makes it easy to obtain incorrect data during the detection process. Once the product under test moves and causes a deviation between the turnover rate and the detection frequency, it will greatly affect the accuracy of the data. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems by providing a feeding device for a laser diameter measuring instrument that can solve the above-mentioned technical issues.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: The feeding device of the laser diameter measuring instrument includes a platform surface, on which a linear guide rail is mounted. A feeding support is provided at one end of the linear guide rail along its length direction. A material detection channel parallel to the length direction of the linear guide rail is provided in the feeding support. A clamping assembly that moves along the axis of the material detection channel is provided on the upper side of the linear guide rail. A traction assembly that is drivenly connected to the clamping assembly is provided on the lower side of the linear guide rail.

[0007] In the feeding device of the laser diameter measuring instrument, the feeding support includes a support rod and support legs respectively disposed at both ends of the support rod. The support legs are fixed on the platform surface, and the material detection channel passes through both support legs and is parallel to the length direction of the support rod.

[0008] In the feeding device of the laser diameter measuring instrument, a constraint sleeve is inserted into the support leg and passed through the material detection channel. The inner diameter of the constraint sleeve is provided with a funnel structure whose diameter gradually decreases from the port inward.

[0009] In the feeding device of the laser diameter measuring instrument, an observation slot is provided on the support connecting rod, and the length direction of the observation slot is consistent with the direction of the material detection channel.

[0010] In the feeding device of the laser diameter measuring instrument, the clamping assembly includes a clamping platform and a pressure clamp disposed thereon. The clamping platform is driven to move along the linear guide rail by the traction assembly, and the clamping end of the pressure clamp abuts against the clamping platform.

[0011] In the feeding device of the laser diameter measuring instrument, a strip-shaped positioning groove is provided on the clamping platform. The positioning groove coincides with the axis of the material detection channel. A clamping groove is also provided on the clamping platform through which the positioning groove passes. The clamping end of the pressure clamp abuts against the bottom of the clamping groove.

[0012] In the feeding device of the laser diameter measuring instrument, the bottom of the positioning groove is flush with the bottom of the clamping groove.

[0013] In the feeding device of the laser diameter measuring instrument, the fixed feet of the pressure clamp are mounted on the clamping platforms on both sides of the positioning groove, so that the pressing process of the clamping end of the pressure clamp is all above the positioning groove.

[0014] In the feeding device of the laser diameter measuring instrument, the traction component includes a traction screw arranged along the axial direction of the material detection channel and a nut slider that moves axially in cooperation with the traction screw, and the nut slider is connected to the clamping component.

[0015] In the feeding device of the laser diameter measuring instrument, a servo motor is provided at one end of the traction screw to make the traction screw rotate circumferentially.

[0016] The advantages of this utility model are: A feeding support is installed in the material detection area, which is the material detection channel. The material can be constrained in a fixed detection position to prevent bending and twisting, so that the material is always aligned with the axial direction of the detection channel. At the same time, the traction component and clamping component can pull the material stably through the material detection channel, ensuring the data accuracy of the laser emission unit during continuous measurement. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the traction component structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the structure between the feeding support and the clamping assembly of this utility model.

[0020] Figure 4 This is a schematic diagram of the feeding support structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the clamping component structure of this utility model.

[0022] In the diagram, the components are: platform surface 1, linear guide rail 11, feeding support 2, material detection channel 21, support connecting rod 22, support leg 23, constraint sleeve 24, observation channel 25, clamping assembly 3, clamping platform 31, pressure clamp 32, positioning groove 33, clamping groove 34, traction assembly 4, traction screw 41, nut slider 42, servo motor 43, laser emitting unit 5, and lens group 6. Detailed Implementation

[0023] The following are specific embodiments of the utility model, which are described in conjunction with the accompanying drawings to further illustrate the technical solution of the utility model. However, the utility model is not limited to these embodiments.

[0024] like Figures 1-5 As shown, the feeding device of the laser diameter measuring instrument includes a platform surface 1, on which a linear guide rail 11 is mounted. A feeding support 2 is provided at one end of the linear guide rail 11 in the length direction. A material detection channel 21 parallel to the length direction of the linear guide rail 11 is provided in the feeding support 2. A clamping component 3 that moves along the axis of the material detection channel 21 is provided on the upper side of the linear guide rail 11. A traction component 4 is provided on the lower side of the linear guide rail 11 and is connected to the clamping component 3 in a transmission manner.

[0025] That is, after the linear guide 11 is installed on the platform, it forms a standard linear motion trajectory. The slider ensures the smooth movement of the clamping component 3. The material detection channel 21 runs through the inside of the feeding support 2, which is used for circumferential positioning of bars, wires or profiles. After the clamping component 3 clamps the material, the axial drive of the traction component 4 is used to realize the automatic and continuous measurement of the material, ensuring that the material continuously and stably passes through the laser diameter measurement area and avoiding errors in the diameter measurement data.

[0026] In this embodiment, the feeding support 2 includes a support rod 22 and support legs 23 respectively disposed at both ends of the support rod 22. The support legs 23 are fixed on the platform surface 1. The material detection channel 21 passes through both support legs 23 and is parallel to the length direction of the support rod 22.

[0027] The support leg 23 is fixed to the material detection channel 21 by a bracket set on the platform surface 1, and one part is also connected to the laser emitting unit to improve the overall integrity. The end of the support connecting rod 22 overlaps the upper side of the two support legs 23 to avoid the material detection channel 21 passing through the support leg 23, while reserving space for laser irradiation of the material.

[0028] In addition, by setting the support connecting rod 22 parallel to the material detection channel 21, it is convenient to make a preliminary judgment on whether the feeding support 2 is installed correctly by observation.

[0029] In this embodiment, a constraint sleeve 24 is inserted into the support leg 23 and is passed through by the material detection channel 21. The inner diameter of the constraint sleeve 24 is provided with a funnel structure whose diameter gradually decreases from the port inward.

[0030] The funnel structure facilitates automatic material guidance into the detection channel, preventing material jamming. The narrowing structure automatically corrects material deviation, reducing offset errors during manual feeding. Rounded corners at the corners prevent scratches on the material during transport.

[0031] In this embodiment, an observation groove 25 is provided on the support connecting rod 22, and the length direction of the observation groove 25 is consistent with the direction of the material detection channel 21.

[0032] The observation channel 25 is positioned between the two legs 23 to prevent the view from being blocked by the support rod 22 after the material passes through one leg 23, thus reducing the difficulty of passing through the other leg 23. It also allows for visual observation of the channel section, making it easier to observe whether the material is moving smoothly.

[0033] Meanwhile, the observation channel 25 is set parallel to the material detection channel 21. After threading, the shape of the material between the two legs 23 can be compared by observing the channel 25 to prevent materials with bends or twists from being detected.

[0034] In this embodiment, the clamping assembly 3 includes a clamping platform 31 and a pressure clamp 32 disposed thereon. The clamping platform 31 is driven to move along the linear guide rail 11 by the traction assembly 4, and the clamping end of the pressure clamp 32 abuts against the clamping platform 31.

[0035] The clamping clamp 32 is a commonly used elbow clamp. By gripping the handle and flipping it, the clamping end abuts against the clamping platform 31 to fix the material. The clamping platform 31 is connected to the traction component 4 to achieve linear movement. At the same time, the clamping platform 31 can slide against the linear guide rail 11 to improve the stability of the platform during movement.

[0036] In this embodiment, a strip-shaped positioning groove 33 is provided on the clamping platform 31. The positioning groove 33 coincides with the axis of the material detection channel 21. The clamping platform 31 is also provided with a clamping groove 34 through which the positioning groove 33 passes. The clamping end of the pressure clamp 32 abuts against the bottom of the clamping groove 34.

[0037] The positioning groove clearly defines the precise position of the material on the clamping platform to avoid clamping eccentricity and ensure that the material axis is always aligned with the detection channel. The clamping groove and the clamping end of the pressure clamp 32 are matched in shape and size. Since the downward stroke of the elbow clamp is arc-shaped, it may cause the material in the clamping groove to bend when it comes into contact with the material. Therefore, the clamping groove is used to control the horizontal offset of the downward pressure end.

[0038] In this embodiment, the bottom of the positioning groove 33 is flush with the bottom of the clamping groove 34.

[0039] The flush structure ensures that there are no steps obstructing the material in the clamping area, which not only ensures that the material is fully compressed by the pressure clamp 32, but also prevents damage to the material caused by the drop of the steps.

[0040] In this embodiment, the fixing feet of the pressure clamp 32 are mounted on the clamping platforms 31 on both sides of the positioning groove 33, so that the pressing process of the clamping end of the pressure clamp 32 is all above the positioning groove 33.

[0041] The pressure clamp 32 can be set above the positioning groove 33 or on one side of the positioning groove. However, considering that the pressing point of the elbow clamp will be offset from the arc center, the pressure clamp 32 is set above the positioning groove 33 and the pressure clamp 32 is made to face away from the direction of material travel. It can drive the material to shift in the direction of travel and pre-tighten the material tension, so that the material passes through the material detection channel 21 more straight.

[0042] In this embodiment, the traction assembly 4 includes a traction screw 41 disposed along the axial direction of the material detection channel 21 and a nut slider 42 that moves axially in cooperation with the traction screw 41. The nut slider 42 is connected to the clamping assembly 3.

[0043] A servo motor 43 is provided at one end of the traction screw 41 to make the traction screw 41 rotate circumferentially.

[0044] The traction screw 41 is a high-precision ball screw and is installed along the linear guide rail 11, so that the nut slider 42 can move precisely along the axial direction of the material detection channel 21, thereby driving the clamping assembly 3 to pull the material forward.

[0045] The speed of the material in the channel is controlled by setting the rotation speed of the servo motor 43, and the continuous measurement of the diameter of the material at each length position is achieved in conjunction with the sampling frequency of the laser emission unit.

[0046] In this embodiment, the laser emitting unit uses two 5mW lasers, symmetrically arranged on both sides of the workpiece to form a 90° angle for simultaneous sampling, thereby improving detection accuracy. The laser detection area is also equipped with an aspherical lens group to focus the laser beam into a parallel spot, covering a measurement range of 0.01mm-6mm.

[0047] In addition, the laser detection area is covered by a constant temperature optical path housing, which is made of aluminum alloy and has a built-in semiconductor temperature controller and heat insulation layer to prevent thermal deformation of the optical path components caused by changes in ambient temperature.

[0048] Operation process: The material is passed through the laser to the clamping module. After manually pressing the elbow clamp, the measurement can be started by clicking the start button. After starting the equipment, the adaptive calibration module automatically runs standard part calibration and generates initial correction coefficients. When the workpiece passes through the measurement area, the dual-path laser emits laser light, which is received by the APD after being blocked by the workpiece and converted into an electrical signal. The FPGA filters the signal, performs A / D conversion, and calls the diameter calculation algorithm to output the real-time diameter value. Based on the received real-time diameter and length values, a curve is automatically generated to facilitate subsequent measurement and observation of individual points.

[0049] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A feeding device for a laser diameter gauge, comprising a feeding platform (1), characterized in that, A linear guide rail (11) is mounted on the platform surface (1). A feeding support (2) is provided at one end of the linear guide rail (11) in the length direction. A material detection channel (21) parallel to the length direction of the linear guide rail (11) is provided in the feeding support (2). A clamping assembly (3) that moves along the axis of the material detection channel (21) is provided on the upper side of the linear guide rail (11). A traction assembly (4) is provided on the lower side of the linear guide rail (11) and is connected to the clamping assembly (3) in a transmission manner.

2. The feeding device for the laser diameter measuring instrument according to claim 1, characterized in that, The feeding support (2) includes a support rod (22) and support legs (23) respectively disposed at both ends of the support rod (22). The support legs (23) are fixed on the platform surface (1). The material detection channel (21) passes through both support legs (23) and is parallel to the length direction of the support rod (22).

3. The feeding device for the laser diameter measuring instrument according to claim 2, characterized in that, The support leg (23) is fitted with a constraint sleeve (24) through which the material detection channel (21) passes. The inner diameter of the constraint sleeve (24) is provided with a funnel structure whose diameter gradually decreases from the port inward.

4. The feeding device for the laser diameter measuring instrument according to claim 2, characterized in that, An observation groove (25) is provided on the support connecting rod (22), and the length direction of the observation groove (25) is consistent with the direction of the material detection channel (21).

5. The feeding device for the laser diameter measuring instrument according to claim 1, characterized in that, The clamping assembly (3) includes a clamping platform (31) and a pressure clamp (32) disposed thereon. The clamping platform (31) is driven to move along the linear guide rail (11) by the traction assembly (4), and the clamping end of the pressure clamp (32) abuts against the clamping platform (31).

6. The feeding device for the laser diameter measuring instrument according to claim 5, characterized in that, The clamping platform (31) is provided with a strip-shaped positioning groove (33), which coincides with the axis of the material detection channel (21). The clamping platform (31) is also provided with a clamping groove (34) through which the positioning groove (33) passes, and the clamping end of the pressure clamp (32) abuts against the bottom of the clamping groove (34).

7. The feeding device for the laser diameter measuring instrument according to claim 6, characterized in that, The positioning groove (33) is flush with the bottom of the clamping groove (34).

8. The feeding device for the laser diameter measuring instrument according to claim 6, characterized in that, The fixed feet of the pressure clamp (32) are mounted on the clamping platforms (31) on both sides of the positioning groove (33), so that the pressing process of the clamping end of the pressure clamp (32) is above the positioning groove (33).

9. The feeding device for the laser diameter measuring instrument according to claim 1, characterized in that, The traction assembly (4) includes a traction screw (41) arranged along the axial direction of the material detection channel (21) and a nut slider (42) that moves axially in the traction screw (41). The nut slider (42) is connected to the clamping assembly (3).

10. The feeding device for the laser diameter measuring instrument according to claim 9, characterized in that, A servo motor (43) is provided at one end of the traction screw (41) to make the traction screw (41) rotate circumferentially.

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