Strain gauge sensitive grid winding device

Abstract

The application belongs to the technical field of strain gauge processing, and specifically discloses a strain gauge sensitive grid winding device. The strain gauge sensitive grid winding device comprises a jig driving assembly, a wire grid jig, a guide pin driving assembly and a wire guide pin. The jig driving assembly has an output end that can move along the Y direction and the Z direction. The wire grid jig comprises a first wire slot plate and a second wire slot plate, both of which are arranged on the output end of the jig driving assembly. The first wire slot plate and the second wire slot plate are arranged at a relative interval along the Y direction. The first wire slot plate comprises a plurality of first grid hooks arranged at an interval along the X direction. The second wire slot plate comprises a plurality of second grid hooks arranged at an interval along the X direction. The plurality of first grid hooks and the plurality of second grid hooks are arranged alternately. The guide pin driving assembly has an output end that can move along the X direction. The wire guide pin is arranged on the output end of the guide pin driving assembly. The wire guide pin has a guide hole that penetrates along the Z direction. The application can improve the winding efficiency and the winding precision of the sensitive grid.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of strain gauge processing, and particularly relates to a strain gauge sensitive grid winding device. BACKGROUND

[0002] With the development of aerospace and nuclear power technology in China, the working temperature of equipment in related fields is continuously improved, and components are very prone to fatigue and failure when being in a high-temperature environment for a long time. Therefore, more accurate pre-research tests and use monitoring of the stress and strain of component structures are needed. The most commonly used method at present is to install a high-temperature strain gauge on the surface of the component for measurement. However, in order to realize accurate measurement of large temperature gradients and stress gradients in a high-temperature environment, the winding precision of the high-temperature strain gauge needs to be improved. The sensitive grid of the strain gauge in the related technology is usually wound by hand, and the efficiency and precision of winding are low. SUMMARY

[0003] The present application aims to at least partially solve one of the technical problems in the related art. To this end, an embodiment of the present application proposes a strain gauge sensitive grid winding device, which can improve the winding efficiency and precision of the sensitive grid.

[0004] The strain gauge sensitive grid winding device of the embodiment of the present application comprises: a jig driving assembly, the jig driving assembly has an output end movable along a Y direction and a Z direction; a wire grid jig, the wire grid jig comprises a first wire slot plate and a second wire slot plate, both of which are arranged on the output end of the jig driving assembly, the first wire slot plate and the second wire slot plate are arranged at a relative interval along the Y direction, the first wire slot plate comprises a plurality of first grid hooks arranged at an interval along an X direction in sequence, the second wire slot plate comprises a plurality of second grid hooks arranged at an interval along the X direction in sequence, the plurality of first grid hooks and the plurality of second grid hooks are arranged alternately, and the X direction, the Y direction and the Z direction are arranged orthogonally; a guide pin driving assembly, the guide pin driving assembly has an output end movable along the X direction, and the output end of the guide pin driving assembly is located above the wire grid jig; a wire guide pin, the wire guide pin is arranged on the output end of the guide pin driving assembly, the wire guide pin has a guide hole penetrating along the Z direction, and a wire can penetrate through the guide hole.

[0005] When the sensitive grid is wound by using the sensitive grid winding device in the embodiment, the wire is passed through the guide hole of the wire guide needle, and the head of the wire is fixed, then the first wire slot plate and the second wire slot plate of the wire grid jig are driven to move along the Y direction and the Z direction by the jig driving assembly, and the wire guide needle is driven to move along the X direction by the guide needle driving assembly, so that the wire is wound on the first grid hook and the second grid hook in an S shape along the X direction, therefore, the winding of the sensitive grid can be realized by controlling the jig driving assembly to drive the wire grid jig to move along the Y direction and the Z direction, and controlling the guide needle driving assembly to drive the wire guide needle to move along the X direction, so that the winding efficiency and the winding precision of the sensitive grid can be improved.

[0006] In the embodiment, the wire grid jig further comprises a position adjusting component connected with the second wire slot plate, and the position adjusting component is used to adjust the position of the second wire slot plate so as to move the second wire slot plate away from or close to the first wire slot plate.

[0007] In the embodiment, the position adjusting component comprises a base provided at the output end of the jig driving assembly, a guide column connected with the base and movable along the Y direction relative to the base, the second wire slot plate being connected with the guide column, a push plate provided at one end of the guide column and located at the side of the second wire slot plate away from the first wire slot plate, and an adjusting block provided at the other end of the guide column and located at the side of the first wire slot plate away from the second wire slot plate, the push plate and the adjusting block being movable relative to the base, an adjusting bolt penetrating through the adjusting block and threadedly connected with the adjusting block, the adjusting bolt being abuttable against the first wire slot plate, and an elastic member sleeved on the outer circumferential surface of the guide column, one end of the elastic member being abuttable against the push plate, and the other end of the elastic member being limited in the base.

[0008] In the embodiment, the top surface of the base is provided with a first mounting groove, the push plate and the elastic member are located in the first mounting groove, and one end of the elastic member is abuttable against the side wall of the first mounting groove; and / or the top surface of the base is provided with a second mounting groove, and the second wire slot plate is provided in the second mounting groove.

[0009] In the embodiment, the wire grid jig further comprises a glue tool plate provided on the base, the glue tool plate is provided with a first avoiding hole corresponding to the first wire slot plate and the second wire slot plate, and the glue tool plate is provided with a support part corresponding to the position of the sensitive grid wound by the wire on the first wire slot plate and the second wire slot plate and requiring to be pasted with adhesive tape.

[0010] In the embodiment, the wire grid jig further comprises a lead wire connecting tool plate, which is arranged on the top of the adhesive tool plate, and is provided with a positioning part for positioning the lead wire, and is provided with a second avoiding hole corresponding to the first avoiding hole.

[0011] In the embodiment, the wire grid jig further comprises a support and two head-to-tail clamps, the support is arranged on the side of the first wire groove plate away from the second wire groove plate, and the two head-to-tail clamps are respectively arranged on the two ends of the support along the X direction, so that one of the head-to-tail clamps serves as the starting point of the wire winding, and the other serves as the terminal point of the wire winding.

[0012] In the embodiment, the head-to-tail clamp comprises a fixed clamp head, a clamping driving part and a movable clamp head, the fixed clamp head is arranged on the support, the clamping driving part is arranged on the support and is spaced apart from the fixed clamp head, and the movable clamp head is arranged on the output end of the clamping driving part, and the clamping driving part is used to drive the movable clamp head to approach or move away from the fixed clamp head.

[0013] In the embodiment, the outlet of the guide hole is provided with a rounded corner.

[0014] In the embodiment, the strain gauge sensitive grid winding device further comprises a tensioner and a wire nozzle fixer, both of which are arranged upstream of the wire guide needle in the conveying direction of the wire, and the wire nozzle fixer is arranged downstream of the tensioner, the tensioner provides tension for the wire, and the wire nozzle fixer can tightly hold or loosen the wire. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the strain gauge sensitive grid winding device of the embodiment of the present application;

[0016] Figure 2 is a structural schematic diagram of the wire grid jig of the embodiment of the present application;

[0017] Figure 3 is a partial structural schematic diagram of the wire grid jig of the embodiment of the present application;

[0018] Figure 4 is Figure 3 is an enlarged structural schematic diagram of I in FIG. 8;

[0019] Figure 5 is a structural schematic diagram of the head-to-tail clamp and the support of the embodiment of the present application;

[0020] Figure 6 is a structural schematic diagram of the adhesive tool plate of the embodiment of the present application;

[0021] Figure 7 is a structural schematic diagram of a wire guide needle of an embodiment of the present application;

[0022] Figure 8 is a structural schematic diagram of a wire nozzle fixer of an embodiment of the present application;

[0023] Figure 9 is a trajectory diagram of a sensitive grid winding process of an embodiment of the present application;

[0024] Figure 10 is a structural schematic diagram of a sensitive grid, adhesive tape and lead wire of an embodiment of the present application.

[0025] Reference signs:

[0026] 100, sensitive grid; 200, adhesive tape; 300, lead wire;

[0027] 1, jig driving assembly; 11, Z-axis moving part; 12, Y-axis moving part; 2, wire grid jig; 21, first wire groove plate; 211, first grid hook; 22, second wire groove plate; 221, second grid hook; 23, position adjusting part; 231, base; 2311, first mounting groove; 2312, second mounting groove; 232, guide column; 233, push plate; 234, adjusting block; 235, adjusting bolt; 236, elastic part; 24, adhesive tool plate; 25, lead wire connecting tool plate; 26, support; 27, start end first and last clamping; 271, fixed clamp head; 272, clamping driving part; 273, movable clamp head; 3, guide needle driving assembly; 4, wire guide needle; 41, guide needle body; 42, fixed block; 5, box body; 6, tensioner; 7, wire nozzle fixer; 71, wire clamping seat; 72, wire threading ring; 73, fixed clamp; 74, wire clamping driving part; 741, wire clamping driving part; 742, pushing block; 743, movable cushion block; 75, fixed cushion block; 8, touch screen; 9, confirmation switch; 10, protective cover; 11, adhesive tape rack; 12, safety grating; 13, support platform. DETAILED DESCRIPTION

[0028] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0029] In the embodiments of the present application, as Figures 1 to 4As shown, the strain gauge sensitive grid winding device comprises a jig driving assembly 1, a wire grid jig 2, a guide pin driving assembly 3 and a wire guide pin 4. The jig driving assembly 1 has an output end movable along the Y direction and the Z direction; the wire grid jig 2 comprises a first wire slot plate 21 and a second wire slot plate 22, both arranged on the output end of the jig driving assembly 1, the first wire slot plate 21 and the second wire slot plate 22 are oppositely spaced along the Y direction, the first wire slot plate 21 comprises a plurality of first grid hooks 211 spaced along the X direction, the second wire slot plate 22 comprises a plurality of second grid hooks 221 spaced along the X direction, the plurality of first grid hooks 211 and the plurality of second grid hooks 221 are staggered, and the X direction, the Y direction and the Z direction are orthogonal; the guide pin driving assembly 3 has an output end movable along the X direction, and the output end of the guide pin driving assembly 3 is located above the wire grid jig 2; the wire guide pin 4 is arranged on the output end of the guide pin driving assembly 3, and the wire guide pin 4 has a guide hole penetrating along the Z direction, and the wire can penetrate through the guide hole.

[0030] Specifically, the jig driving assembly 1 comprises a Z-axis moving part 11 and a Y-axis moving part 12, the Y-axis moving part 12 is arranged on the output end of the Z-axis moving part 11, and the wire grid jig 2 is arranged on the output end of the Y-axis moving part 12. For example, the Z-axis moving part 11 comprises a Z-axis driving source, a lead screw, a guide shaft parallel and spaced apart from the lead screw, and a sliding block, one end of the lead screw is connected to the Z-axis driving source, the Z-axis driving source is used to drive the lead screw to rotate, and the Z-axis driving source can be a motor. The sliding block is threadedly connected to the lead screw and is slidingly connected to the transmission shaft. For example, the Y-axis moving part 12 can be a linear module, and the specific structure of the linear module is a conventional prior art, which will not be described in detail here. Further, the guide pin driving assembly 3 can also be a linear module. The specific structures of the jig driving assembly 1 and the guide pin driving assembly 3 can be set according to actual needs, which are not limited here.

[0031] When using the strain gauge sensitive grid winding device in the embodiment to wind the sensitive grid, the wire is passed through the guide hole of the wire guide pin 4, and the head of the wire is fixed, then the first wire slot plate 21 and the second wire slot plate 22 of the wire grid jig 2 are driven by the jig driving assembly 1 to move along the Y direction and the Z direction, and the wire guide pin 4 is driven by the guide pin driving assembly 3 to move along the X direction, so that the wire is wound on the first grid hook 211 and the second grid hook 221 in an S shape along the X direction. Therefore, by controlling the jig driving assembly 1 to drive the wire grid jig 2 to move along the Y direction and the Z direction, and controlling the guide pin driving assembly 3 to drive the wire guide pin 4 to move along the X direction, the winding of the sensitive grid can be realized, thereby improving the winding efficiency and precision of the sensitive grid.

[0032] In the embodiment, as shown in Figure 1As shown, the strain gauge sensitive grid winding device further comprises a box body 5, a protective cover 10 arranged on the top of the box body 5, and a control system arranged in the box body 5. The jig driving assembly 1 and the guide pin driving assembly 3 are electrically connected with the control system, so as to control the jig driving assembly 1 and the guide pin driving assembly 3 through the control system, which is beneficial to improve the control precision and production efficiency. The jig driving assembly 1, the wire grid jig 2, the guide pin driving assembly 3 and the wire guide pin 4 are arranged in the protective cover 10, and the safety of the production process can be improved by arranging the protective cover 10. One side of the protective cover 10 is provided with an operation port, and a safety grating 12 is arranged at the operation port. By arranging the safety grating 12, it can be detected whether there is a person or object at the operation port. If a person or object is detected, the winding device is stopped by the control system to protect the person and the device. Further, the protective cover 10 is further provided with a supporting platform 13, and the guide pin driving assembly 3 can be arranged on the supporting platform 13. The specific structure of the supporting platform 13 can be arranged according to actual needs, which is not limited here. The jig driving assembly 1 can be arranged on the top of the box body 5.

[0033] In the embodiment, three anti-skid pads and a balance nut can be arranged at the bottom of the box body 5, and the three anti-skid pads and the balance nut are arranged at the four corners of the bottom of the box body 5. The balance of the box body 5 can be adjusted by the balance nut, so that the overall balance of the winding device can be adjusted.

[0034] In the embodiment, as shown in Figure 2 and Figure 3 The wire grid jig 2 further comprises a position adjusting component 23 connected with the second wire groove plate 22. The position adjusting component 23 is used to adjust the position of the second wire groove plate 22, so that the second wire groove plate 22 can be away from or close to the first wire groove plate 21.

[0035] It can be understood that the position of the second wire groove plate 22 is adjusted by the position adjusting component, so that the second wire groove plate 22 can be away from or close to the first wire groove plate 21, so as to adjust the distance between the first wire groove plate 21 and the second wire groove plate 22, thereby adjusting the size of the wound sensitive grid. In addition, when the winding of the sensitive grid is completed, the distance between the first wire groove plate 21 and the second wire groove plate 22 is adjusted, so that the sensitive grid can be kept in a relaxed state, thereby facilitating the taking of the sensitive grid from the first wire groove plate 21 and the second wire groove plate 22.

[0036] In the embodiment, as shown in Figure 2 and Figure 3As shown, the position adjusting component 23 comprises a base 231, a guide column 232, a push plate 233, an adjusting block 234, an adjusting bolt 235 and an elastic member 236. The base 231 is arranged at the output end of the jig driving assembly 1. The guide column 232 is connected to the base 231 and is movable along the Y direction relative to the base 231. The second wire slot plate 22 is connected to the guide column 232. The push plate 233 is arranged at one end of the guide column 232 and is located at the side of the second wire slot plate 22 away from the first wire slot plate 21. The adjusting block 234 is arranged at the other end of the guide column 232 and is located at the side of the first wire slot plate 21 away from the second wire slot plate 22. Both the push plate 233 and the adjusting block 234 are movable relative to the base 231. The adjusting bolt 235 penetrates through the adjusting block 234 and is threadedly connected with the adjusting block 234. The adjusting bolt 235 can abut against the first wire slot plate 21. The elastic member 236 is sleeved on the outer circumferential surface of the guide column 232. One end of the elastic member 236 abuts against the push plate 233. The other end of the elastic member 236 is limited in the base 231.

[0037] Specifically, two guide columns 232 can be arranged in parallel and spaced apart. Each guide column 232 is provided with an elastic member 236. The two guide columns 232 are arranged to guide the second wire slot plate 22, which is beneficial to stably move the second wire slot plate 22 along the Y direction.

[0038] For example, the elastic member 236 can be a spring, which is convenient to select and obtain and is beneficial to reduce the processing cost.

[0039] When the position of the second wire slot plate 22 is adjusted by the position adjusting component 23, the adjusting bolt 235 is rotated. Since one end of the adjusting bolt 235 abuts against the first wire slot plate 21, when the adjusting bolt 235 is rotated, the rotation of the adjusting bolt 235 can be converted into the movement of the adjusting block 234 along the Y direction due to the threaded connection between the adjusting bolt 235 and the adjusting block 234. When the adjusting block 234 moves along the Y direction, the second wire slot plate 22 can be moved by the guide column 232, so that the distance between the second wire slot plate 22 and the first wire slot plate 21 can be adjusted. When the second wire slot plate 22 needs to be moved in the reverse direction, the adjusting bolt 235 can be rotated in the reverse direction. In addition, when the sensitive grid is completed, the push plate is pushed towards the second wire slot plate 22. At this time, the elastic member 236 is compressed. The push plate 233 can push the second wire slot plate 22 to move towards the first wire slot plate 21 through the guide column 232, so that the sensitive grid wound on the first wire slot plate 21 and the second wire slot plate 22 is in a relaxed state, which is beneficial to take down the sensitive grid from the first wire slot plate 21 and the second wire slot plate 22. After the push plate 233 is released, the push plate 233 can be reset under the elastic force of the elastic member 236.

[0040] In the embodiment, as shown in Figure 3As shown, a first mounting groove 2311 is provided on the top surface of the base 231. The push plate 233 and the elastic member 236 are both located in the first mounting groove 2311, and one end of the elastic member 236 abuts against the side wall of the first mounting groove 2311.

[0041] By setting the first mounting groove 2311, the push plate 233 and the elastic element 236 are both placed in the first mounting groove 2311, which helps to make the overall structure more compact.

[0042] In this embodiment, a second mounting groove 2312 is provided on the top surface of the base 231, and a second groove plate 22 is disposed in the second mounting groove 2312.

[0043] By setting a second mounting groove 2312 on the top surface of the base 231, the second groove plate 22 is placed in the second mounting groove 2312. The second groove plate 22 can be limited by the side wall of the second mounting groove 2312 distributed along the Y direction, while also making the overall structure more compact.

[0044] In this embodiment, as Figure 2 and Figure 6 As shown, the wire grid fixture 2 also includes an adhesive fixture plate 24, which is disposed on the base 231. The adhesive fixture plate 24 is provided with a first clearance hole corresponding to the first wire groove plate 21 and the second wire groove plate 22, and a support part is provided at the position where the sensitive grid wound by wire on the first wire groove plate 21 and the second wire groove plate 22 needs to be covered with adhesive tape.

[0045] Specifically, a tape holder 11 is provided inside the protective cover. The tape holder 11 is used to hold the tape so that the tape can be easily taken out.

[0046] It should be noted that by providing the first clearance hole at the position of the adhesive fixture 24 corresponding to the first groove plate 21 and the second groove plate 22, the adhesive fixture 24 can prevent interference with the winding of the sensitive grid.

[0047] After the sensitive grid is wound and the lead wire is placed, adhesive tape needs to be applied. The underlying surface of the tape application area needs support to ensure the lead wire and sensitive grid are fully and smoothly adhered to the tape. Therefore, a support portion is provided on the adhesive application fixture 24. The position of the support portion corresponds to the location on the first and second grooved plates 21 where the sensitive grid needs to be covered with adhesive tape, which facilitates the full and smooth adhesion of the lead wire and sensitive grid to the tape. The specific structure of the support portion can be set according to the scenario and is not limited here.

[0048] In this embodiment, as Figure 2As shown, the wire grid jig 2 further comprises a lead wire connecting tool plate 25, which is arranged on the top of the adhesive tool plate 24. The lead wire connecting tool plate 25 is provided with a positioning portion for positioning the lead wire, and the lead wire connecting tool plate 25 is provided with a second avoiding hole corresponding to the first avoiding hole.

[0049] Specifically, the positioning portion can be a positioning groove matched with the structure of the lead wire. Of course, the positioning portion can also be arranged in other structures as long as it is convenient for positioning the lead wire, which is not limited herein.

[0050] It can be understood that, by arranging the lead wire connecting tool plate 25 and arranging the positioning portion on the lead wire connecting tool plate 25 to position the lead wire, the position of the lead wire can be accurately controlled, and the accuracy of the connection position of the lead wire and the sensitive grid can be improved. In addition, by arranging the second avoiding hole on the lead wire connecting tool plate 25 corresponding to the first avoiding hole, interference caused by the winding of the lead wire connecting tool plate 25 and the pasting of the adhesive on the sensitive grid can be avoided.

[0051] In the embodiment, as shown in Figure 2 and Figure 3 , the wire grid jig 2 further comprises a support 26 and two start-end clamps 27. The support 26 is arranged on the side of the first wire groove plate 21 away from the second wire groove plate 22, and the two start-end clamps 27 are respectively arranged on the two ends of the support 26 along the X direction, so that one of the start-end clamps 27 serves as the starting point of the wire winding, and the other serves as the terminal point of the wire winding.

[0052] It should be noted that, by arranging two start-end clamps 27, one of the start-end clamps 27 is fixed to the beginning of the wire to serve as the starting point of the wire winding, and the other is fixed to the end of the wire to serve as the terminal point of the wire winding, which can effectively prevent the wire from loosening during winding.

[0053] In the embodiment, as shown in Figure 2 and Figure 5 , the start-end clamp 27 comprises a fixed clamp head 271, a clamping driving member 272 and a movable clamp head 273. The fixed clamp head 271 is arranged on the support 26, the clamping driving member 272 is arranged on the support 26 and spaced apart from the fixed clamp head 271, and the movable clamp head 273 is arranged on the output end of the clamping driving member 272. The clamping driving member 272 is used to drive the movable clamp head 273 to approach or move away from the fixed clamp head 271.

[0054] For example, the clamping driving member 272 can be a pneumatic cylinder, the cylinder barrel of the pneumatic cylinder is connected to the support 26, and the movable clamp head 273 is connected to the cylinder rod of the pneumatic cylinder. The movable clamp head 273 is driven to move by the extension and retraction of the cylinder rod.

[0055] It can be understood that when the starting point or the ending point of the wire needs to be fixed, the clamping drive 272 is started to drive the movable chuck 273 to move towards the fixed chuck 271 through the clamping drive 272, so that the wire can be fixed; when the wire needs to be loosened, the clamping drive 272 is started to drive the movable chuck 273 to move away from the fixed chuck 271.

[0056] In the embodiment, as shown in Figure 1 and Figure 7 The wire guide needle 4 includes a guide needle body 41 and a fixed block 42, the fixed block 42 has a fixed part provided with a mounting hole, the guide needle body 41 is mounted in the mounting hole and fixed by a fixed pin abutting against the guide needle body 41, and the guide needle body 41 has a guide hole. The wire guide needle 4 is connected to the output end of the guide needle driving assembly 3 through the fixed block 42.

[0057] In the embodiment, the outlet of the guide hole is provided with a rounded corner.

[0058] Specifically, the radius R of the rounded corner is 0.2mm-0.3mm, too small rounded corner will cause the wire to be curled due to additional stress when the wire is discharged, and too large rounded corner will cause it difficult to accurately control the position and angle of the wire at the outlet of the guide needle.

[0059] It can be understood that the curling of the wire caused by additional stress can be reduced by providing a rounded corner at the outlet of the guide hole.

[0060] In the embodiment, as shown in Figure 1 The strain gauge sensitive grid winding device further includes a tensioner 6 and a wire nozzle fixer 7, both of which are arranged upstream of the wire guide needle 4 in the conveying direction of the wire, and the wire nozzle fixer 7 is arranged downstream of the tensioner 6, the tensioner 6 provides tension for the wire, and the wire nozzle fixer 7 can hold or loosen the wire.

[0061] Specifically, the tensioner 6 provides tension for the wire, and the tensioner 6 is a conventional prior art, and its specific structure is not described in detail here. The tensioner 6 can be arranged above the wire nozzle fixer 7, and the wire nozzle fixer 7 is arranged above the wire guide needle 4, and the wire passes through the tensioner 6, the wire nozzle fixer 7 and then passes through the guide hole.

[0062] It can be understood that the tensioning force is applied to the wire through the tensioner 6, so that the wire can be kept in a tight state during winding, which is convenient for shaping; the tensioning force is controlled by the wire nozzle fixer 7 whether it is transmitted to the wire guide needle 4, when the wire nozzle fixer 7 is clamped, the tensioning force is not transmitted to the wire guide needle 4, and the wire is in a relaxed state; when the wire nozzle fixer 7 is released, the tensioning force can be transmitted to the wire guide needle 4, and the wire can be kept in a tight state; through the cooperation of the wire nozzle fixer 7, the control of the tensioning force of the wire can be realized, and the situation that the wire is not convenient to hook under the tight state is handled.

[0063] In the embodiment, as shown in Figure 1 and Figure 8 , the wire nozzle fixer 7 includes a wire clamping seat 71, a wire passing ring 72, a fixed clamp 73 and a wire clamping driving part 74, the fixed clamp 73 is arranged on one side of the wire clamping seat 71 and connected to the wire clamping seat 71, the wire passing ring 72 is arranged on the top of the fixed clamp 73, the fixed clamp 73 has a vertical wire passing channel corresponding to the central axis of the wire passing ring 72, so that the wire can pass through the wire passing ring 72 and the wire passing channel, and the wire clamping driving part 74 is arranged on the wire clamping seat 71, the wire clamping driving part 74 has a movable wire clamping part, the fixed clamp 73 has a fixed clamp 73 wire part, the movable wire clamping part and the fixed clamp 73 wire part are oppositely arranged and correspond to the wire passing channel, and the movable wire clamping part of the wire clamping driving part 74 can be close to or away from the fixed clamp 73 wire part to clamp or release the wire.

[0064] Further, as shown in Figure 8 , the wire clamping driving part 74 includes a wire clamping driving part 741, a pushing block 742 and a movable pad block 743, the wire clamping driving part 741 is arranged on the wire clamping seat 71, the pushing block 742 is connected to the output end of the wire clamping driving part 741 and oppositely arranged with the fixed clamp 73 wire part, the movable pad block 743 is arranged on the side of the pushing block 742 facing the fixed clamp 73 wire part, and the fixed clamp 73 wire part is provided with a fixed pad block 75. The wire clamping driving part 741 can be a micro pneumatic cylinder. The movable pad block 743 and the fixed pad block 75 can be made of silica gel material. The surface of the wire passing ring 72 is smooth, which can avoid scratching the wire. The wire passes through the center of the wire passing ring 72 from top to bottom, and passes through the wire passing channel between the movable pad block 743 and the fixed pad block 75. When the wire clamping driving part 741 drives the movable pad block 743 to move towards the fixed pad block 75 through the pushing block 742, the movable pad block 743 is close to the fixed pad block 75, and the wire is fixed at this time, so that the tension of the lead front segment can be blocked; when the wire clamping driving part 741 drives the movable pad block 743 to move away from the fixed pad block 75 through the pushing block 742, the movable pad block 743 is separated from the fixed pad block 75, and the wire is free, so that the tension of the wire front segment can be transmitted to the wire guide needle 4 and the wire grid jig 2.

[0065] In the embodiment, as shown in Figure 1As shown, the strain gauge sensitive grid winding device further comprises a touch screen 8, which is electrically connected with the control system. By setting the touch screen 8, the length and the number of bends of the sensitive grid to be wound can be input through the touch screen 8, and the distance between the second wire groove plate 22 and the first wire groove plate 21 is adjusted according to the length of the sensitive grid, and the number of bends of the wire winding is controlled.

[0066] In the embodiment, as shown in Figure 1 As shown, the strain gauge sensitive grid winding device further comprises a confirmation switch 9, which is electrically connected with the control system, so as to control the start of the sensitive grid winding through the confirmation switch 9.

[0067] When the strain gauge sensitive grid winding device in the embodiment is used, the winding can be performed according to the trajectory as shown in Figure 9 The process of winding the sensitive grid comprises the following steps:

[0068] The wire to be wound is wound on the wire wheel of the tensioner 6, one end of the wire passes through the wire nozzle holder 7 and penetrates into the wire guide needle, and protrudes from the guide hole;

[0069] The length and the number of bends of the sensitive grid to be wound are input through the touch screen 8, and the distance between the second wire groove plate 22 and the first wire groove plate 21 is adjusted according to the length of the sensitive grid.

[0070] The confirmation switch 9 is pressed, and the program is run.

[0071] The jig driving assembly 1 drives the wire grid jig 2 to return to the zero position, and the needle driving assembly 3 drives the wire guide needle 4 to return to the zero position, at this time, the wire guide needle is vertically above one of the start and end clamps of the wire grid jig 2.

[0072] The specific winding process is as follows:

[0073] Firstly, the Z-axis moving part drives the wire grid jig 2 to move upward, the wire nozzle holder 7 holds the wire, and the needle driving assembly 3 drives the wire guide needle 4 to pull the wire from O1 point to l1, the start and end clamp L1 clamps the wire exposed by the wire guide needle 4, the start action is completed, and the wire nozzle holder 7 is loosened.

[0074] Then, the wire is controlled to be discharged, the needle driving assembly 3 drives the wire guide needle 4 to pull the wire to move to a1 point, and the Z-axis moving part drives the wire grid jig 2 to lower, the lowering length is about equal to the distance from a1 point to a2 point, at this time, since the direction of the wire discharge is close to the length direction of the needle, the angle between the wire and the outlet of the wire guide needle 4 is large, so that the additional stress applied to the wire by the outlet of the wire guide needle 4 can be reduced.

[0075] Then, the hooking at A1 is performed, the guide pin driving assembly 3 combines the Y-axis moving member 12 to move the guide pin to a2, and the Z-axis moving member drives the wire grid fixture 2 to rise. At this time, the wire enters the groove between A1 and A3, and then the guide pin driving assembly 3 drives the wire guide pin 4 to move to a3, and the Z-axis moving member drives the wire grid fixture 2 to lower.

[0076] Then, the hooking at B2 is performed, the Y-axis moving member 12 drives the wire grid fixture 2 to move, the wire guide pin 4 is located at b4, the Z-axis moving member drives the wire grid fixture 2 to rise, the guide pin driving assembly 3 drives the wire guide pin 4 to move to b5, the Z-axis moving member drives the wire grid fixture 2 to lower, the Y-axis moving member 12 drives the wire grid fixture 2 to move, and the guide pin driving assembly 3 drives the wire guide pin 4 to move, so that the wire guide pin 4 is located at b6.

[0077] Then, the hooking at A3 is performed, the Y-axis moving member 12 drives the wire grid fixture 2 to move, so that the wire guide pin 4 is located at a7, the Z-axis moving member drives the wire grid fixture 2 to rise, the guide pin driving assembly 3 drives the wire guide pin 4 to move to a8, the Z-axis moving member drives the wire grid fixture 2 to lower, the guide pin driving assembly 3 drives the wire guide pin 4 to move along the X direction, and the Y-axis moving assembly drives the wire grid fixture 2 to move along the Y axis, so that the wire guide pin 4 moves to a9.

[0078] Then, the hooking at Bn is performed, so that the wire guide pin 4 is located at b(3n-2), and the wire grid fixture 2 is driven to rise, then the wire guide pin 4 is located at b(3n-1), the wire grid fixture 2 is controlled to lower, and the wire guide pin 4 moves to b3n.

[0079] Then, the hooking at A(n+1) is performed, so that the wire guide pin 4 is located at a(3n+1), the wire grid fixture 2 is controlled to rise, so that the wire guide pin 4 is located at r1, and then the wire grid fixture 2 is controlled to lower, and the length of lowering is approximately equal to the distance from r1 to r2, which has the same effect as step one. At this time, since the wire outlet direction is close to the guide pin length direction, the angle between the wire and the wire guide pin 4 outlet is large, which can reduce the additional stress applied to the wire by the wire guide pin 4 outlet.

[0080] Finally, the hooking of the end wire is performed, so that the wire guide pin 4 is located at O2, and the starting and ending clamp at R1 is clamped. Next time, the wire clamped by the starting and ending clamp at R1 is taken as the starting wire, and the wire clamped by the starting and ending clamp at L1 is taken as the ending wire.

[0081] After the sensitive grid is wound, the lead wires are placed on the positioning part of the lead wire connecting tool plate 25. One lead wire is placed on the left side and one lead wire is placed on the right side of the sensitive grid. The distance between the two sides of the lead wire and the sensitive grid is the same, and each lead wire is aligned with the second grid hook 221 of the second wire groove plate 22.

[0082] As shown in FIG. 6, the lead wire connecting tool plate 25 is provided with a positioning part 251, a lead wire clamping part 252, and a lead wire clamping part 253. Figure 10As shown, the adhesive tape is used as a frame, and the sensitive grid and lead wires are fixed by using the adhesive tool plate 24 to assist in pasting the adhesive tape. The adhesive tape can be a Teflon adhesive tape.

[0083] After the adhesive tape is pasted, the points l1 and r1 are cut off, the second wire groove plate 22 is separated from the sensitive grid by pushing the push plate 233, the adhesive tape and the sensitive grid and lead wires pasted thereon are taken away together, and are transferred to a resistance welding device. The sensitive grid and the lead wires are welded using the resistance welding device. After the welding is completed, the adhesive tape is removed, and the strain gauge is taken down together and transferred to the next process for packaging. The strain gauge is completed.

[0084] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0085] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0086] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected or in communication with each other; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication or interaction relationship of two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0087] In the present application, unless specifically stated and limited otherwise, a first feature "on" or "under" a second feature can be directly in contact with the second feature, or indirectly in contact with the second feature through an intermediate medium. Also, a first feature "over", "above" and "on top of" a second feature can be directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. A first feature "under", "below" and "underneath" a second feature can be directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0088] In the present application, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material or characteristic is included in at least one embodiment or example of the present application. Exemplary representations of the above terms in the present specification are not necessarily directed to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples. In addition, different embodiments or examples described in the present specification and features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0089] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. A strain gauge sensitive grid winding device, characterized by, The utility model relates to a kind of wire grid jig and its position adjusting device, including: Jig driving assembly, the output end of the jig driving assembly can be moved along Y direction and Z direction; Wire grid jig, the first wire slot plate and the second wire slot plate of the wire grid jig are arranged on the output end of the jig driving assembly, the first wire slot plate and the second wire slot plate are oppositely spaced along the Y direction, the first wire slot plate includes a plurality of first grid hooks sequentially spaced along the X direction, the second wire slot plate includes a plurality of second grid hooks sequentially spaced along the X direction, a plurality of the first grid hooks and a plurality of the second grid hooks are staggered, the X direction, the Y direction and the Z direction are orthogonal arrangement; Guide pin driving assembly, the output end of the guide pin driving assembly can be moved along the X direction, and the output end of the guide pin driving assembly is located above the wire grid jig; Wire guide pin, the wire guide pin is arranged on the output end of the guide pin driving assembly, the wire guide pin has a guide hole through along the Z direction, and wire can be penetrated through the guide hole; The wire grid jig further includes a position adjusting component connected to the second wire slot plate, and the position adjusting component is used to adjust the position of the second wire slot plate to move the second wire slot plate away from or close to the first wire slot plate. The position adjusting component includes: A base is arranged on the output end of the jig driving assembly, A guide column is connected to the base and can be moved along the Y direction relative to the base, and the second wire slot plate is connected to the guide column; A push plate is arranged at one end of the guide column, and the push plate is located on the side of the second wire slot plate away from the first wire slot plate, and an adjusting block is arranged at the other end of the guide column, and the adjusting block is located on the side of the first wire slot plate away from the second wire slot plate, and the push plate and the adjusting block are movable relative to the base; An adjusting bolt penetrates the adjusting block and is threadedly connected with the adjusting block, and the adjusting bolt can abut against the first wire slot plate; An elastic member is sleeved on the outer circumferential surface of the guide column, and one end of the elastic member abuts against the push plate, and the other end of the elastic member is limited in the base.

2. The strain gauge sensitive grid winding device according to claim 1, characterized in that A top surface of the base is provided with a first mounting groove, and the push plate and the elastic member are located in the first mounting groove, and one end of the elastic member abuts against the side wall of the first mounting groove. And / or, a second mounting groove is provided on the top surface of the base, and the second wire slot plate is arranged in the second mounting groove.

3. The strain gauge sensitive grid winding device according to claim 1, characterized in that The wire grid jig further includes a glue tooling plate arranged on the base, and the glue tooling plate is provided with a first avoiding hole corresponding to the first wire slot plate and the second wire slot plate, and is provided with a support part corresponding to the position on the first wire slot plate and the second wire slot plate which needs to be pasted with adhesive tape for sensitive grid wound by the wire.

4. The strain gauge sensitive grid winding device according to claim 3, characterized in that The wire grid jig further includes a lead connection tooling plate arranged on the top of the glue tooling plate, the lead connection tooling plate is provided with a positioning part for positioning lead, and the lead connection tooling plate is provided with a second avoiding hole corresponding to the first avoiding hole.

5. The strain gauge sensitive grid winding device according to claim 1, characterized in that, The wire grid tool further comprises a support and two head-to-tail clamps, the support is arranged on the side of the first wire groove plate away from the second wire groove plate, and the two head-to-tail clamps are arranged at the two ends of the support along the X direction respectively, so that one of the head-to-tail clamps serves as the starting point of the wire winding, and the other serves as the ending point of the wire winding.

6. A strain gauge sensitive grid winding device according to claim 5, characterised in that, The head-to-tail clamp comprises a fixed clamp head, a clamping driving member and a movable clamp head, the fixed clamp head is arranged on the support, the clamping driving member is arranged on the support and spaced apart from the fixed clamp head, and the movable clamp head is arranged on the output end of the clamping driving member, the clamping driving member is used to drive the movable clamp head to move close to or away from the fixed clamp head.

7. The strain gauge sensitive grid winding device according to claim 1, characterized in that, The outlet of the guide hole is provided with a rounded corner.

8. The strain gauge sensitive grid winding device according to claim 1, characterized in that Further comprising a tensioner and a wire nozzle fixer, both the tensioner and the wire nozzle fixer are arranged upstream of the wire guide needle in the conveying direction of the wire, and the wire nozzle fixer is arranged downstream of the tensioner, the tensioner provides tension for the wire, and the wire nozzle fixer can hold or release the wire.

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