Workpiece height detection tool

Abstract

The utility model discloses a workpiece height detection tool which comprises an installation table top, a linear guide rail and an optical displacement meter which are arranged on the installation table top, and a carrying component which is arranged on the linear guide rail in a sliding mode. A workpiece is detachably loaded on the carrying component, the optical displacement meter comprises a light source, an image sensor and a control system electrically connected with the image sensor, the light source emits slit light with a certain width, the slit light is constructed to be capable of sweeping the workpiece capable of sliding on a preset track, and the image sensor receives reflected light formed by reflecting the slit light through the workpiece; and the control system obtains the height value and the section contour of the workpiece according to the brightness value of the light imaging pixel received by the image sensor and based on the triangulation principle. According to the scheme, the slit light emitted by the optical displacement meter can scan the carrying component which passes through the linear guide rail in a sliding manner in a stable state, so that the optical displacement meter can quickly and accurately measure the height of a workpiece loaded on the carrying component.

Description

Technical Field

[0001] This utility model relates to the field of charging base technology, and more specifically, to a workpiece height detection fixture. Background Technology

[0002] Traditional production and operation models rely heavily on labor costs and economies of scale. However, with the continuous rise in labor costs in recent years, they face competitive pressure from changes in the external environment and operational pressure from changes in the industry environment. Currently, the height of the spring contacts on the circuit board that are installed to the charging base and terminals can only be detected by manual measurement and comparison. There is no automatic detection mechanism for positioning and clamping, resulting in unstable test results, large differences, low reliability, and low efficiency.

[0003] Therefore, how to provide a tooling that can quickly detect the height of a workpiece has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] One objective of this invention is to provide a new technical solution for a workpiece height detection fixture.

[0005] According to a first aspect of this utility model, a workpiece height detection fixture is provided, characterized in that it includes a mounting platform, a linear guide rail and an optical displacement meter disposed on the mounting platform, and a transport component slidably disposed on the linear guide rail; the transport component detachably loads the workpiece, the optical displacement meter includes a light source, an image sensor, and a control system electrically connected to the image sensor, the light source emits slit light of a certain width, the slit light is configured to sweep across the workpiece which is slidable on a predetermined trajectory, wherein the predetermined trajectory is limited by the linear guide rail, the image sensor receives reflected light formed by the slit light reflected by the workpiece; the control system obtains the height value and cross-sectional profile of the workpiece based on the brightness value of the light imaging pixels received by the image sensor and based on the principle of triangulation.

[0006] Optionally, there may be multiple linear guides, which are spaced apart along the extension direction of the slit width.

[0007] Optionally, the extension direction of the slit light width, the extension direction of the linear guide rail, and the emission direction of the slit light are perpendicular to each other.

[0008] Optionally, the carrier component is further provided with a slider, which is slidably connected to the linear guide rail.

[0009] Optionally, the device further comprises a driving device, an output end of the driving device being connected to the carrying member; the driving device is configured as a rotary motor, the rotary motor being provided with a rotating shaft with external threads, the carrying member being provided with a threaded hole with internal threads, the rotating shaft and the threaded hole being threadedly connected.

[0010] Optionally, the device further comprises a control device, the control device controlling the driving device to drive the carrying member to reciprocate in the predetermined track of the linear guide rail.

[0011] Optionally, the linear guide rail is provided with a first position and a second position at two ends of the predetermined track; when the height of the workpiece meets the predetermined requirement, the carrying member slides from the first position towards the second position and returns to the first position via the second position; when the height of the workpiece does not meet the predetermined requirement, the carrying member slides from the first position towards the second position and stops at the second position, and returns to the first position after an operator inputs a confirmation password in the control device.

[0012] Optionally, the device further comprises a position detection device, the position detection device comprising a blocking member and a photoelectric switch sensor, one of the blocking member and the photoelectric switch sensor being arranged on the carrying member, and the other being arranged on the linear guide rail and located at the second position.

[0013] Optionally, the photoelectric switch sensor has a U-shaped groove, and the blocking member has a sheet structure, the sheet structure being capable of sliding into the U-shaped groove to cut off the photoelectric switch sensor at the second position, so that the control device controls the driving device to stop driving, and the control device controls the carrying member to return to the first position or stop at the second position according to whether the height of the workpiece detected by the detection device meets the predetermined requirement.

[0014] Optionally, the device further comprises a first limiting member and a second limiting member, the first limiting member being located at the first position side of the linear guide rail to block the carrying member from driving out of the linear guide rail, and the second limiting member being located at the second position side of the linear guide rail to block the carrying member from driving out of the linear guide rail and limit the workpiece from being disassembled at the second position.

[0015] According to the workpiece height detection tool, the following beneficial effects can be achieved:

[0016] By means of the workpiece height detection tool, the slit light emitted by the optical displacement meter can scan the carrying member sliding through the linear guide rail in a stable state, so that the optical displacement meter can quickly and accurately measure the height of the workpiece located on the carrying member.

[0017] Other features and advantages of the present application will be made apparent by the following detailed description of exemplary embodiments thereof, given, by way of example only, with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0019] Fig. 1 A structure schematic view of the workpiece height detection tooling provided by the present application;

[0020] Fig. 2 Another structure schematic view of the workpiece height detection tooling provided by the present application;

[0021] Fig. 3 A structure schematic view of the optical displacement meter in the present application.

[0022] The figures are indicated as follows:

[0023] 101 - mounting table; 102 - linear guide rail; 103 - optical displacement meter; 104 - carrying member; 105 - light source; 106 - image sensor; 107 - slit light; 108 - sliding block; 110 - rotary motor; 111 - rotating shaft; 112 - in-place detection device; 113 - blocking member; 114 - photoelectric switch sensor; 115 - first limiting member; 116 - second limiting member; 117 - circuit board; 118 - workpiece; 119 - sliding groove; 120 - guide rib; 121 - slide. DETAILED DESCRIPTION

[0024] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.

[0025] The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application or its application or uses.

[0026] Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail herein. However, where appropriate, such techniques, methods, and devices can be considered part of the specification.

[0027] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary, and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0028] According to one workpiece height detection tooling provided by the present application,Figs. 1 to 3 As shown, it comprises a mounting table 101, a linear guide rail 102 and an optical displacement meter 103 arranged on the mounting table 101, and a carrying member 104 slidingly arranged on the linear guide rail 102; the carrying member 104 is detachably loaded with the workpiece 118, the optical displacement meter 103 comprises a light source 105, an image sensor 106, and a control system electrically connected with the image sensor 106, the light source 105 emits a slit light 107 with a certain width, the slit light 107 is configured to scan the workpiece 118 which is slidable on a predetermined track, wherein the predetermined track is formed by the linear guide rail 102, the image sensor 106 receives reflected light formed by the slit light 107 reflected by the workpiece 118; the control system obtains the height value and the cross-sectional profile of the workpiece 118 according to the brightness value of the light imaging pixels received by the image sensor 106 and based on the principle of triangulation.

[0029] By means of the workpiece height detection tool, the slit light 107 emitted by the optical displacement meter 103 can scan the carrying member 104 sliding on the linear guide rail 102 in a stable state, so that the optical displacement meter 103 can quickly and accurately measure the height of the workpiece 118 loaded on the carrying member 104.

[0030] The linear guide rail 102 is fixed to the mounting table 101, which can provide a stable running track for the carrying member 104, and the carrying member 104 can provide a reference plane with a fixed height, the carrying member 104 is provided with a fixing structure to fix the workpiece 118 at a predetermined position of the carrying member 104, so that the optical displacement meter 103 can detect the accurate height value of the workpiece 118, and by quickly sliding the carrying member 104 on the linear guide rail 102, the time for the optical displacement meter 103 to measure the height of the workpiece 118 can be shortened, thereby improving the detection efficiency.

[0031] In practical application, the model of the optical displacement meter 103 can be Keyence LJ-X8080.

[0032] The workpiece 118 can be a bullet, which is assembled on a circuit board 117, and the circuit board 117 is installed on the carrying member 104, so that the height of the bullet can be detected by the optical displacement meter 103, and the height of the combination formed by the bullet arranged on the circuit board 117 can also be detected. The combination formed by the circuit board 117 assembled with the bullet can be in a state of being assembled on a charging base, and the bullet abuts against the tail of the terminal.

[0033] The detection principle of the optical displacement meter 103 is disclosed in detail in the related patent publications (Chinese patent application publications CN111854630A and CN119354095A), which will not be described here.

[0034] According to an embodiment of the workpiece height detection tooling device of the present disclosure, the plurality of linear guides 102 are arranged along the extension direction of the width of the slit light 107.

[0035] The plurality of linear guides 102 are arranged to collectively support the carrier member 104 to make the carrier member 104 slide more smoothly and avoid the carrier member 104 tilting on both sides of the width direction of the slit light 107.

[0036] According to an embodiment of the workpiece height detection tooling device of the present disclosure, the extension direction of the width of the slit light 107, the extension direction of the linear guide 102 and the emission direction of the slit light 107 are perpendicular to each other.

[0037] The extension direction of the linear guide 102 and the emission direction of the slit light 107 are perpendicular to each other, which can avoid the optical displacement meter 103 interfering with the linear guide 102, the carrier member 104 and the workpiece 118 arranged on the carrier member 104 within the predetermined track of the linear guide 102.

[0038] The extension direction of the width of the slit light 107 and the extension direction of the linear guide 102 are perpendicular to each other, which can cover the carrier member 104 in the maximum range of the width direction of the slit light 107 when the slit light 107 sweeps the predetermined track, so that the workpiece 118 is arranged in the scanning range as a whole.

[0039] In other words, the linear guide 102 extends along the X-axis, the extension direction of the width of the slit light 107 extends along the Y-axis, and the emission direction of the slit light 107 extends along the Z-axis.

[0040] According to an embodiment of the workpiece height detection tooling device of the present disclosure, the carrier member 104 is further provided with a sliding block 108, which is slidingly connected to the linear guide 102.

[0041] The sliding block 108 can make the carrier member 104 slide smoothly on the linear guide 102, and the workpiece 118 carried by the carrier member 104 can pass through the scanning area of the slit light 107 in a stable state when the carrier member 104 slides.

[0042] In specific implementation, the sliding block 108 can be provided with a sliding groove 119, which is slidingly arranged on the linear guide 102; or the two side surfaces of the two linear guides 102 adjacent to each other can be provided with sliding channels 121, and the two opposite side surfaces of the sliding block 108 are respectively provided with guide ribs 120, which are matchedly arranged in the sliding channels 121.

[0043] According to one embodiment of a workpiece height detection fixture disclosed herein, a driving device is further included, the output end of which is connected to the carrier component 104; the driving device is configured as a rotary motor 110, the rotary motor 110 is provided with a rotating shaft 111 having external threads, the carrier component 104 is provided with a threaded hole having internal threads, and the rotating shaft 111 and the threaded hole are threadedly connected.

[0044] By engaging the external thread of the rotating shaft 111 with the threaded hole of the carrier component 104, the rotational motion of the rotating shaft 111 of the rotary motor 110 can be converted into the linear motion of the carrier component 104, so that the carrier component 104 can slide smoothly on the linear guide rail 102.

[0045] Specifically, it also includes a control device, which controls the drive device to drive the carrier component 104 to reciprocate within a predetermined trajectory of the linear guide rail 102.

[0046] The carrier component 104 is controlled by a control device to move from a first position to a second position and then back to the first position, so as to load and unload the workpiece 118 at the first position, thereby simplifying the operator's operation process and improving efficiency.

[0047] More specifically, the linear guide rail 102 has a first position and a second position located at both ends of the predetermined trajectory; when the height of the workpiece 118 meets the predetermined requirements, the transport component 104 slides from the first position toward the second position and returns to the first position via the second position; when the height of the workpiece 118 violates the predetermined requirements, the transport component 104 slides from the first position toward the second position and stops at the second position, and returns to the first position after the operator enters a confirmation password in the control device.

[0048] When the height of workpiece 118 deviates from the predetermined requirements, the carrier component 104 is stopped at the second position, and after the operator enters a confirmation password in the control device, it returns to the first position. This can remind the operator to place the non-conforming product in the non-conforming position and count it in the control system to prevent the qualified product from being confused with the non-conforming product.

[0049] More specifically, it also includes a positioning detection device 112, which includes a blocking element 113 and a photoelectric switch sensor 114. One of the blocking element 113 and the photoelectric switch sensor 114 is disposed on the carrier component 104, and the other is disposed on the linear guide rail 102 and located at the second position.

[0050] By using the on / off signal of the electrical switch sensor in the positioning detection device 112, the control device can control the rotary motor 110 to stop rotating. Then, based on the detection information that the height of the workpiece 118 is qualified, the control device controls the rotary motor 110 to rotate in another direction to return the transport component 104 from the second position to the first position.

[0051] More specifically, the photoelectric switch sensor 114 has a U-shaped groove, and the blocking member 113 is a sheet-like structure. The sheet-like structure can slide into the U-shaped groove at the second position to cut off the photoelectric signal in the photoelectric switch sensor 114, so that the control device controls the driving device to stop driving. The control device then controls the carrier member 104 to return to the first position or stop at the second position according to whether the height of the workpiece 118 detected by the detection device meets the predetermined requirements.

[0052] If the height of workpiece 118 is within acceptable limits, the control device controls the carrier component 104 to return from the second position to the first position via the rotary motor 110; if the height of workpiece 118 is not within acceptable limits, the operator needs to enter a confirmation password in the control device before the workpiece returns to the first position.

[0053] More specifically, it also includes a first limiting member 115 and a second limiting member 116, wherein the first limiting member 115 is located on the first position side of the linear guide rail 102 to prevent the transport member 104 from leaving the linear guide rail 102; and the second limiting member 116 is located on the second position side of the linear guide rail 102 to prevent the transport member 104 from leaving the linear guide rail 102 and to restrict the disassembly of the workpiece 118 at the second position.

[0054] The first limiting member 115 and the second limiting member 116 can make the carrier component 104 reciprocate within the predetermined stroke of the linear guide rail 102, preventing the carrier component 104 from leaving the linear guide rail 102; the second limiting member 116 can also prevent the operator from unloading the workpiece 118 at the second position, and prevent the workpiece 118 from scratching and damaging the optical displacement meter 103.

[0055] In practice, the first limiting member 115 is located on the first position side, and the second limiting member 116 is located on the second position side.

[0056] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A workpiece height detection fixture, characterized in that, The system includes a mounting platform, a linear guide rail and an optical displacement meter mounted on the mounting platform, and a transport component slidably mounted on the linear guide rail. The transport component detachably mounts the workpiece. The optical displacement meter includes a light source, an image sensor, and a control system electrically connected to the image sensor. The light source emits a slit light of a certain width, configured to sweep across the workpiece, which is slidable on a predetermined trajectory. The predetermined trajectory is defined by the linear guide rail. The image sensor receives reflected light from the workpiece. The control system obtains the height and cross-sectional profile of the workpiece based on the brightness values ​​of the light imaging pixels received by the image sensor and the principle of triangulation.

2. The workpiece height detection fixture according to claim 1, characterized in that, The linear guide rails are multiple in number and are spaced apart along the extension direction of the slit light width.

3. The workpiece height detection fixture according to claim 1, characterized in that, The extension direction of the slit light width, the extension direction of the linear guide rail, and the emission direction of the slit light are all perpendicular to each other.

4. The workpiece height detection fixture according to claim 1, characterized in that, The carrier component is also provided with a slider, which is slidably connected to the linear guide rail.

5. The workpiece height detection fixture according to claim 1, characterized in that, It also includes a drive device, the output end of which is connected to the carrier component; the drive device is configured as a rotary motor, the rotary motor is provided with a rotating shaft with external threads, the carrier component is provided with a threaded hole with internal threads, and the rotating shaft and the threaded hole are threadedly connected.

6. The workpiece height detection fixture according to claim 5, characterized in that, It also includes a control device, which controls the drive device to move the carrier component back and forth within a predetermined trajectory of the linear guide rail.

7. The workpiece height detection fixture according to claim 6, characterized in that, The linear guide has a first position and a second position located at both ends of the predetermined trajectory; when the height of the workpiece meets the predetermined requirements, the transport component slides from the first position toward the second position and returns to the first position via the second position; when the height of the workpiece violates the predetermined requirements, the transport component slides from the first position toward the second position and stops at the second position, and returns to the first position after the operator enters a confirmation password in the control device.

8. The workpiece height detection fixture according to claim 7, characterized in that, It also includes a positioning detection device, which includes a blocking element and a photoelectric switch sensor. One of the blocking element and the photoelectric switch sensor is disposed on the carrier component, and the other is disposed on the linear guide rail and located at the second position.

9. The workpiece height detection fixture according to claim 8, characterized in that, The photoelectric switch sensor has a U-shaped groove, and the blocking member is a sheet-like structure. The sheet-like structure can slide into the U-shaped groove at the second position to cut off the photoelectric switch sensor, so that the control device controls the driving device to stop driving. The control device then controls the carrier to return to the first position or stop at the second position according to whether the height of the workpiece detected by the detection device meets the predetermined requirements.

10. The workpiece height detection fixture according to claim 7, characterized in that, It also includes a first limiting member and a second limiting member, the first limiting member being located on a first position side of the linear guide rail to prevent the carrier component from leaving the linear guide rail; the second limiting member being located on a second position side of the linear guide rail to prevent the carrier component from leaving the linear guide rail and to restrict the disassembly of the workpiece at the second position.

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