Wire harness fixed-length measuring device

Abstract

The utility model provides a wire harness fixed-length measuring device, which is applied to the field of wire processing, and is characterized in that a tensioning mechanism is used for tensioning and fixing a to-be-measured wire and detecting the position of one end, far away from a wire core, of a wire sheath of the to-be-measured wire; the breakpoint detection mechanism slides along a fixed electric wire path, triggers an induction signal when reaching a cut-off point of the wire skin and detects position information; and a controller which is in electric signal connection with the tensioning mechanism and the breakpoint detection mechanism and is used for receiving the position information sent by the tensioning mechanism and the breakpoint detection mechanism and calculating the length of the wire skin by combining the two position information. The length measuring device has the technical effects that the length of the wire skin can be measured instead of manual work, and the measuring precision is higher.

Description

Technical Field

[0001] The utility model relates to the field of wire processing, in particular to a wire harness fixed-length measuring device. Background Art

[0002] Electrical wires are currently the most commonly used devices for power transmission, including a wire core and a wire sheath wrapped around the wire core. The wire sheath serves to insulate and protect the wire core.

[0003] When installing the wires, part of the wire sheath needs to be cut off and the wire core exposed to the outside, so as to facilitate the connection of the wires. In standardized industrial production, there are relatively strict requirements on the specifications of the wires, including the total length of the wires and the length of the remaining wire sheath after cutting off part of the wire sheath. There are relatively strict indicators. At present, the total length of the wires is controlled at the production end, and the amount of wire sheath cut off needs to be controlled when the wires are installed. At present, the measurement of the remaining wire sheath length of the wire is usually completed by manual measurement with a ruler, but because the wires are generally easy to bend, it is difficult to completely fit the ruler and the wire during measurement, so there will be a problem of large errors. Therefore, a device for measuring the wire sheath length is needed to improve the measurement accuracy. Utility Model Content

[0004] The utility model aims to provide a wire harness fixed-length measuring device, which has the advantages of replacing manual measurement of the length of the wire sheath and having higher measurement accuracy.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides the following technical solutions: a wire harness fixed length measuring device, including a support frame, and also including:

[0006] The tensioning mechanism is used to tighten and fix the wire to be tested and detect the position of the wire sheath of the wire to be tested away from one end of the wire core;

[0007] A breakpoint detection mechanism slides along a fixed wire path, triggers a sensing signal when reaching the cutoff point of the wire skin, and detects position information; and

[0008] The controller is connected to the tensioning mechanism and the breakpoint detection mechanism via electrical signals, and is used to receive the position information sent by the tensioning mechanism and the breakpoint detection mechanism and calculate the wire sheath length in combination with the two pieces of position information.

[0009] Through the above technical scheme, the tensioning mechanism tightens the two ends of the wire and detects the position of the wire sheath away from one end of the wire core after the wire is fixed, and sends this position information to the controller. Thereafter, the breakpoint detection mechanism slides along the length direction of the wire, and when it reaches the wire sheath cutting position, that is, the connection position between the wire sheath and the wire core, the breakpoint detection mechanism detects and generates a signal, and also sends the position information to the controller. The controller processes and calculates the two position information, and the distance between the two positions is the length of the wire sheath. This scheme measures the positions of the two ends of the wire sheath respectively after the wire is tightened, which solves the problem of low precision caused by the inability of the ruler and the wire to fit perfectly during manual measurement.

[0010] In one embodiment of the utility model, the tensioning mechanism includes: a wire core fixing assembly for fixing the end of the wire core away from the wire sheath; a wire sheath tensioning assembly for driving the wire sheath to slide away from the end of the wire core to tension the wire; and a tensioning detection component for monitoring the force on the wire and sending an induction signal to the controller when the wire is tensioned. After receiving the signal, the controller controls the wire sheath tensioning assembly to stop conveying.

[0011] Through the above technical solution, after the wire core is fixed on the wire core fixing component, one end of the wire sheath is installed on the wire sheath tensioning component. The wire sheath tensioning component drives the wire sheath to slide toward the end away from the wire core fixing component to tighten the wire, thereby making the detection of the position information of the wire sheath more accurate.

[0012] In one embodiment of the utility model, the wire core fixing assembly includes: a first mounting seat slidably assembled on the support frame, the tension detection member is configured as a tension sensor, and the two force-bearing ends of the tension sensor are respectively fixed to the support frame and the first mounting seat; a first positioning block supported by the first mounting seat and used to position the end of the wire core; and a first clamping member used to clamp and fix the wire core on the first positioning block.

[0013] Through the above technical solution, during installation, the end of the wire core is placed on the first positioning block and the wire core is positioned by the first positioning block, and then the first clamping member clamps and fixes the wire core on the first positioning block, thereby fixing one end of the wire core.

[0014] In one embodiment of the utility model, the wire skin tensioning assembly includes: a second mounting seat slidably assembled on the support frame; a second positioning block carried by the second mounting seat and used to position the end of the wire skin; a second clamping member used to press and fix the wire skin on the second positioning block; and a first driving device connected to the controller electrical signal, the first driving device is used to drive the second mounting seat to slide back and forth and detect the sliding distance of the second mounting seat.

[0015] Through the above technical solution, the end of the wire sheath is positioned on the second positioning block during installation, and then the second clamping member presses and fixes the wire sheath on the second positioning block. Then the first driving device drives the second mounting seat to slide in the direction away from the first mounting seat, so as to gradually increase the distance between the two ends of the wire and tighten and fix the wire.

[0016] In one embodiment of the utility model, the first driving device is configured as a screw mechanism driven by a servo motor. The servo system used in conjunction with the servo motor detects the rotation angle of the servo motor output shaft and sends this information to the controller. The controller calculates the sliding distance of the second mounting seat based on the pitch of the screw.

[0017] Through the above technical solution, an initial position of the second mounting seat is set before use. The position of the end of the fixed wire sheath at this initial position is measured in advance. When in use, the servo system can control and record the angle of rotation of the screw rod, and calculate the distance moved by the second mounting seat in combination with the pitch of the screw rod, so as to know the position of one end of the wire sheath after the wire is tensioned.

[0018] In one embodiment of the utility model, the breakpoint detection mechanism includes: a third mounting seat slidably assembled on the support frame; a pressure sensing device arranged on the third mounting seat; and a second driving device for driving the third mounting seat to slide and detect the position information of the third mounting seat. When the third mounting seat slides, it drives the pressure sensing device to slide along the wire core toward the direction where the wire skin is located. The pressure sensing device sends a sensing signal after squeezing and contacting the wire skin.

[0019] Through the above technical solution, after the wire is tightened and fixed, the first driving device drives the third mounting seat to slide on the support frame, and then drives the pressure sensing device to move along the wire core toward the direction of the wire sheath. After the pressure sensing device contacts the wire sheath, it is squeezed by the wire sheath and triggers a sensing signal. The pressure sensing device sends the signal to the controller. After receiving the signal, the controller controls the second driving device to stop working and put the third mounting seat in a stationary state. At the same time, the first driving device detects the position information of the cutting point, and calculates the length of the wire sheath by combining the position information with the position information of the end of the wire sheath.

[0020] In one embodiment of the utility model, the second driving device is configured as a screw mechanism driven by a servo motor. The servo system used in conjunction with the servo motor detects the rotation angle of the servo motor output shaft and sends the angle information to the controller. The controller calculates the position information of the third mounting seat based on the pitch of the screw.

[0021] Through the above technical solution, an initial position of the third mounting seat is set before use, and the position of the detection end of the pressure sensing device at this time is measured in advance. Then, the servo motor drives the screw to rotate and then drives the third mounting seat to slide. When the servo motor stops after receiving the signal from the controller, the rotation angle of the servo motor shaft and the pitch of the screw recorded by the servo system can be combined to calculate the sliding stroke of the third mounting seat. Combined with the initial position of the third mounting seat, the position of the wire skin cutting point can be calculated.

[0022] In one embodiment of the utility model, the pressure sensing device is configured as a pressure sensor, and an abutment block is also slidably mounted on the third mounting seat, and an accommodating groove is provided on the abutment block for the wire core to pass through but the wire sheath cannot pass through. An elastic member is provided between the abutment block and the pressure sensor for transmitting pressure to the pressure sensor when the abutment block is under pressure; and a limiting block is also included for limiting the maximum distance between the abutment block and the pressure sensor.

[0023] Through the above technical scheme, during the sliding movement of the third mounting seat, the core of the wire passes through the accommodating groove opened on the abutment block, and the abutment block slides synchronously with the third mounting seat; after the abutment block contacts the wire skin, the abutment block will be stopped by the wire skin, and the abutment block slides relative to the third mounting seat. During this process, the abutment block squeezes the elastic member and transmits the pressure to the pressure sensor through the elastic member. After receiving the signal, the controller controls the third mounting seat to stop sliding. At this time, due to the relative sliding of the abutment block relative to the third mounting seat, the position detection of the wire skin cutting point is inaccurate. At this time, the controller controls the third mounting seat to slowly retreat until the pressure on the pressure sensor returns to the initial value, which means that the abutment block returns to the initial position. At this time, the detection of the position information of the cutting point is more accurate, which further improves the measurement accuracy.

[0024] As described above, the wire harness fixed length measuring device of the utility model has the following beneficial effects:

[0025] The tensioning mechanism tightens both ends of the wire and detects the position of the wire sheath away from one end of the wire core after the wire is fixed, and sends this position information to the controller. Thereafter, the breakpoint detection mechanism slides along the length direction of the wire, and when it reaches the wire sheath cutting position, that is, the connection position between the wire sheath and the wire core, the breakpoint detection mechanism detects and generates a signal, and also sends the position information to the controller. The controller processes and calculates the two position information, and the distance between the two positions is the length of the wire sheath. This solution measures the positions of the two ends of the wire sheath respectively after the wire is tightened, which solves the problem of low precision caused by the inability of the ruler and the wire to fit perfectly during manual measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0027] Figure 2 yes Figure 1 A magnified schematic diagram of part A;

[0028] Figure 3 yes Figure 1 A magnified schematic diagram of part B;

[0029] Figure 4 It is a schematic diagram of a wire core fixing assembly according to an embodiment of the utility model.

[0030] : Illustration symbols: 1. support frame; 2. support rod; 3. work table; 4. slide rail; 5. wire core fixing assembly; 6. wire skin tensioning assembly; 7. tensioning detection member; 8. micro-range slide; 9. breakpoint detection mechanism; 10. limiting rod; 11. abutment block; 12. accommodating groove; 13. limiting block; 14. elastic member; 51. first mounting seat; 52. first positioning block; 53. first clamping member; 54. first positioning groove; 61. second mounting seat; 62. second positioning block; 63. second clamping member; 64. second positioning groove; 65. first driving device; 91. third mounting seat; 92. pressure sensing device; 93. second driving device. DETAILED DESCRIPTION

[0031] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0032] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0033] See also Figure 1 The utility model provides a wire harness fixed length measuring device, comprising:

[0034] The support frame 1 and the controller, the support frame 1 includes a plurality of support rods 2 fixed and spliced ​​by screws, and a work surface 3 fixed to the upper ends of the support rods 2 by screws and arranged in the horizontal direction, and a slide rail 4 arranged in the horizontal direction along the length direction is fixed on the work surface 3.

[0035] See also Figure 1 and Figure 4 , and also includes a tensioning mechanism for pulling both ends of the wire to tighten the wire, the tensioning mechanism includes: a wire core fixing component 5 for fixing the end of the wire core away from the wire sheath; a wire sheath tensioning component 6 for driving the wire sheath to slide away from the end of the wire core to tighten the wire; and a tensioning detection component 7 for monitoring the force applied to the wire and sending an induction signal to the controller when the wire is tensioned.

[0036] See also Figure 1 and Figure 4 The wire core fixing assembly 5 includes: a first mounting seat 51 assembled on the worktable 3 through a micro-stroke slide 8, a tension detection member 7 is set as a tension sensor, and the two force-bearing ends of the tension sensor are respectively fixed to the support frame 1 and the first mounting seat 51 by screws; a first positioning block 52 fixed to the first mounting seat 51 by screws for positioning the end of the wire core, and a first positioning groove 54 is provided on the first positioning block 52. After the wire core is placed in the first positioning groove 54, the first positioning block 52 restricts the wire core from being able to deviate laterally, and after the wire core is placed in the first positioning groove 54, the end of the wire core abuts against the first positioning block 52, thereby positioning the end of the wire core; and a first pressing member 53 for squeezing and fixing the wire core on the first positioning block 52. In this embodiment, the first pressing member 53 is set as a quick clamp, and in other embodiments, a cylinder, an electric cylinder or a hydraulic cylinder can also be used instead. The quick clamp is installed on the first mounting seat 51, and the wire core is fixed by pressing down the clamp.

[0037] See also Figure 1 and Figure 2 The wire skin tensioning assembly 6 includes: a second mounting seat 61 slidably assembled on the slide rail 4; a second positioning block 62 fixed on the second mounting seat 61 by screws and used to position the end of the wire skin, and a second positioning groove 64 is provided on the second positioning block 62. After the wire skin is placed in the second positioning groove 64, the second positioning block 62 restricts the wire skin from moving sideways, and after the wire skin is placed in the second positioning groove 64, the end of the wire skin abuts against the second positioning block 62, thereby positioning the end of the wire skin; and a second clamping member 63 for squeezing and fixing the wire skin on the second positioning block 62. In this embodiment, the second clamping member 63 is configured as a quick clamp, and in other embodiments, a pneumatic cylinder, an electric cylinder or a hydraulic cylinder can be used instead. The quick clamp is installed on the second mounting seat 61, and the wire skin is fixed by pressing down the clamp.

[0038] See also Figure 1, and also includes a first driving device 65 for driving the second mounting seat 61 to slide back and forth on the slide rail 4. In this embodiment, the first driving device 65 is configured as a screw mechanism driven by a servo motor. The servo system used in conjunction with the servo motor detects the rotation angle of the servo motor output shaft and sends this information to the controller. The controller calculates the sliding distance of the second mounting seat based on the pitch of the screw. When the first driving device 65 drives the second mounting seat 61 to move in a direction away from the wire core fixing component 5, the wire core fixing component 5 cooperates with the wire skin tensioning component 6 to straighten the wire.

[0039] See also Figure 1 and Figure 3 , and also includes a breakpoint detection mechanism 9 that moves along the length direction of the wire and triggers an induction signal when reaching the cutoff point of the wire skin. The breakpoint detection mechanism 9 includes:

[0040] A third mounting seat 91 is slidably mounted on the slide rail 4 fixed on the support frame 1; a pressure sensing device 92 is mounted on the third mounting seat 91. In this embodiment, the pressure sensing device 92 is set as a pressure sensor. The pressure sensor is mounted and fixed on the third mounting seat 91. A limiting rod 10 is threadedly connected to the sensing end of the pressure sensor. An abutment block 11 is also slidably mounted on the third mounting seat 91. The sliding direction of the abutment block 11 is the same as the sliding direction of the third mounting seat 91. A receiving groove 12 is provided on the abutment block 11 for the wire core to pass through but the wire skin cannot pass through. The limiting rod 10 passes through the abutment block 11. A limiting block 13 for limiting the abutment block 11 from being away from the maximum position of the pressure sensor is welded and fixed at the end of the limiting rod 10. An elastic member 14 is provided between the abutment block 11 and the pressure sensor to transmit pressure to the pressure sensor when the abutment block 11 is under pressure. In this embodiment, the elastic member 14 is set as a spring. The spring is sleeved on the limiting rod 10 and its two ends are respectively abutted against the abutment block 11 and the pressure sensor;

[0041] The second drive device 93 is used to drive the third mounting seat 91 to slide. In this embodiment, the second drive device 93 is configured as a screw mechanism driven by a servo motor. The servo system used in conjunction with the servo motor detects the rotation angle of the servo motor output shaft and sends the angle information to the controller. The controller calculates the position information of the third mounting seat 91 based on the pitch of the screw. After receiving the signal from the pressure sensor, the controller controls the second drive device 93 to stop working.

[0042] See also Figure 1In this embodiment, the slide rail 4 is provided with two sections, and the second mounting seat 61 and the third mounting seat 91 are respectively slidably assembled on one section of the slide rail 4; when the second mounting seat 61 slides to the position closest to the first mounting seat 51, the position of the wire skin end is set to the initial position, and when the first driving device 65 drives the screw rod to rotate and then drives the second mounting seat 61 to slide, the servo system records the rotation angle of the rotating shaft of the servo motor, and calculates the sliding distance of the second mounting seat 61 in combination with the pitch controller of the screw rod, and then calculates the position of the wire skin end after the wire is tightened and fixed in combination with the initial position of the wire skin end.

[0043] When the third mounting seat 91 slides to the position closest to the first mounting seat 51, the position of the contact point between the abutment block 11 and the wire skin is set as the initial position. When the servo motor drives the screw rod to rotate and then drives the third mounting seat 91 to slide, the servo system records the rotation angle of the servo motor shaft, and calculates the sliding distance of the third mounting seat 91 in combination with the pitch controller of the screw rod, and then calculates the position of the wire skin cutting point in combination with the initial position, thereby calculating the length of the wire skin based on the position information of the wire skin cutting point and the position information of the end of the wire skin.

[0044] Brief description of the usage process: the tensioning mechanism tightens the two ends of the wire and detects the position of the wire sheath away from one end of the wire core after the wire is fixed, and sends this position information to the controller. Thereafter, the breakpoint detection mechanism 9 slides along the length direction of the wire. When it reaches the wire sheath cutting position, that is, the connection position between the wire sheath and the wire core, the breakpoint detection mechanism 9 detects and generates a signal, and also sends the position information to the controller. The controller processes and calculates the two position information, and the distance between the two positions is the length of the wire sheath. This solution measures the positions of the two ends of the wire sheath respectively after the wire is tightened, which solves the problem of low precision caused by the inability of the ruler and the wire to fit perfectly during manual measurement.

[0045] In summary, the utility model can replace manual measurement of the length of the wire skin and has higher measurement accuracy. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0046] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A wire harness fixed length measuring device, comprising a support frame (1), characterized in that: Also includes: The tensioning mechanism is used to tighten and fix the wire to be tested and detect the position of the wire sheath of the wire to be tested away from one end of the wire core; A breakpoint detection mechanism (9) slides along a fixed wire path, triggers an induction signal when reaching the cutoff point of the wire skin, and detects position information; as well as, The controller is connected to the tensioning mechanism and the breakpoint detection mechanism (9) via electrical signals, and is used to receive position information sent by the tensioning mechanism and the breakpoint detection mechanism (9) and calculate the wire sheath length by combining the two pieces of position information.

2. The wire harness fixed length measuring device according to claim 1, characterized in that: The tensioning mechanism comprises: a wire core fixing component (5) for fixing the end of the wire core away from the wire sheath; a wire sheath tensioning component (6) for driving the wire sheath to slide away from the end of the wire core to tension the wire; and a tensioning detection component (7) for monitoring the force applied to the wire and sending an induction signal to the controller when the wire is tensioned, and the controller controls the wire sheath tensioning component (6) to stop conveying after receiving the signal.

3. The wire harness fixed length measuring device according to claim 2, characterized in that: The wire core fixing assembly (5) comprises: a first mounting seat (51) slidably mounted on the support frame (1), the tension detection member (7) being configured as a tension sensor, the two force-bearing ends of the tension sensor being respectively fixed to the support frame (1) and the first mounting seat (51); a first positioning block (52) supported by the first mounting seat (51) and used for positioning the end of the wire core; and a first pressing member (53) used for pressing and fixing the wire core on the first positioning block (52).

4. The wire harness fixed length measuring device according to claim 2, characterized in that: The wire sheath tensioning assembly (6) comprises: a second mounting seat (61) slidably mounted on the support frame (1); a second positioning block (62) supported by the second mounting seat (61) and used to position the end of the wire sheath; a second pressing member (63) used to press and fix the wire sheath on the second positioning block (62); and a first driving device (65) connected to the controller by electrical signals, the first driving device (65) being used to drive the second mounting seat (61) to slide back and forth and detect the sliding distance of the second mounting seat (61).

5. The wire harness fixed length measuring device according to claim 4, characterized in that: The first driving device (65) is configured as a screw mechanism driven by a servo motor. A servo system used in conjunction with the servo motor detects the rotation angle of the servo motor output shaft and sends this information to a controller. The controller calculates the sliding distance of the second mounting seat (61) in combination with the screw pitch.

6. The wire harness fixed length measuring device according to any one of claims 1 to 5, characterized in that: The breakpoint detection mechanism (9) comprises: a third mounting seat (91) slidably mounted on the support frame (1); a pressure sensing device (92) arranged on the third mounting seat (91); and a second driving device (93) for driving the third mounting seat (91) to slide and detecting position information of the third mounting seat (91); when the third mounting seat (91) slides, it drives the pressure sensing device (92) to slide along the direction where the wire core is located toward the wire sheath, and the pressure sensing device (92) sends a sensing signal after squeezing and contacting the wire sheath.

7. The wire harness fixed length measuring device according to claim 6, characterized in that: The second driving device (93) is configured as a screw mechanism driven by a servo motor. A servo system used in conjunction with the servo motor detects the rotation angle of the servo motor output shaft and sends the angle information to a controller. The controller calculates the position information of the third mounting seat (91) in combination with the screw pitch.

8. The wire harness fixed length measuring device according to claim 6, characterized in that: The pressure sensing device (92) is configured as a pressure sensor. The third mounting seat (91) is also slidably mounted with an abutment block (11). The abutment block (11) is provided with a receiving groove (12) for allowing the wire core to pass through but the wire sheath to not pass through. An elastic member (14) is provided between the abutment block (11) and the pressure sensor for transmitting pressure to the pressure sensor when the abutment block (11) is under pressure. The abutment block (13) is also provided for limiting the maximum distance between the abutment block (11) and the pressure sensor.

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