Rapid surface mounting tool and method for strain type force sensor

Abstract

The invention provides a rapid surface mounting tool and method for a strain type force transducer, the tool comprises a positioning ring, a positioning column and a traction rod, the positioning column sleeves the traction rod, the positioning ring sleeves the positioning column, the side surface of one end of the positioning column is provided with at least one accommodating window, the accommodating window is internally provided with a surface mounting block, and the surface mounting block sleeves the positioning ring. A top ring is arranged in the positioning column, and the traction rod is sleeved with the top ring. The rapid surface mounting tool and method for the strain type force sensor are suitable for surface mounting of the internal surface mounting type force sensor, rapid and accurate surface mounting of the strain type internal surface mounting type sensor can be achieved, and therefore the production efficiency and the product quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of force sensor patch tooling, and in particular to a quick patch tooling and method for a strain type force sensor. Background Art

[0002] Strain-type force sensors are based on the resistance strain effect. When the sensor elastic body undergoes mechanical deformation under the action of external force, the resistance value of the resistance strain gauge will change accordingly. The strain-type force sensor attaches the strain gauge to the object to be measured (sensor elastic body) so that it expands and contracts with the strain of the object to be measured, thereby measuring the change in resistance. This change is converted into an electrical signal output through a Wheatstone bridge circuit, thereby achieving force measurement.

[0003] At present, the patch position of strain gauges in strain type force sensors can be divided into two types: external patch and internal patch. Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the external patch. At this time, the external patch position 1 is not blocked, and the staff can stick the strain gauge to the corresponding position by hand without the help of tools; Figure 2 This is a schematic diagram of the inner patch. At this time, the inner patch position 2 is deeper in the inner hole. The force sensor of the inner patch is generally used for pin-type force sensors. Its advantage is that the inner patch sensor has stronger torsion resistance, so it has a certain market demand. However, because the patch position is deeper in the inner hole, tooling is required to complete the patch.

[0004] like Figure 3 As shown in the figure, the existing patch tooling is in the shape of a long strip and a flat shape. When performing patching, the strain gauge coated with glue is placed on the position of the pressure plate 3 in the figure, and then the patching operation is performed by going deep into the hole. This type of patch tooling is prone to loose patching, causing the output strain gauge to loosen or fall off during the use of the product, thereby causing a malfunction. At the same time, it will also cause the patch position to be inaccurate, thereby affecting the accuracy of the sensor. Summary of the invention

[0005] To this end, an object of the present invention is to provide a rapid patch tooling and method for a strain type force sensor to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A quick patch tooling for a strain type force sensor comprises a positioning ring, a positioning column and a traction rod, wherein the positioning column is sleeved on the traction rod, the positioning ring is sleeved on the positioning column, at least one accommodating window is provided on the side of one end of the positioning column, a patch block is provided in the accommodating window, a top ring is provided in the positioning column, and the top ring is sleeved on the traction rod.

[0008] Preferably, the positioning ring is provided with a plurality of first screw holes, the plurality of first screw holes are evenly distributed on the positioning ring, and the positioning ring is connected to the positioning column via a first top screw.

[0009] Preferably, at least one wiring groove is provided on the outer surface of the positioning column, one end of the wiring groove is connected to the accommodating window, and the other end of the wiring groove extends to an end of the positioning column away from the accommodating window.

[0010] Preferably, the top ring includes a head end and a tail end, the head end is connected to the tail end, the head end is truncated cone-shaped, and the tail end is cylindrical, and a through hole is provided inside the top ring which axially penetrates the head end and the tail end, and the top ring is sleeved on the traction rod through the through hole.

[0011] Preferably, the top ring is provided with a plurality of second screw holes, the plurality of second screw holes are evenly distributed on the side surface of the tail end, the second screw holes penetrate the side wall of the tail end and are connected with the through hole, and the top ring is connected to the traction rod through a second top screw.

[0012] Preferably, the number of the patch blocks is the same as the number of the accommodating windows, each of the accommodating windows is provided with a patch block, and the patch blocks are interference fit with the accommodating windows.

[0013] Preferably, the patch block includes a top surface and a bottom surface, the top surface is a convex cylindrical surface, the top surface is provided with a step perpendicular to the top surface, and the bottom surface includes a first curved surface and a second curved surface, the first curved surface is connected to the second curved surface, the first curved surface is a concave truncated cone curved surface, and the second curved surface is a concave cylindrical curved surface.

[0014] Preferably, an annular groove is provided on the positioning column, and the annular groove is used for fixing and installing an elastic retaining ring, and the annular groove is located at the accommodating window.

[0015] Preferably, a traction cap is provided at one end of the traction rod, the length of the traction rod is greater than the length of the positioning column, and the length of the positioning column is greater than the length of the positioning ring.

[0016] The present invention also provides a method for rapid patching of a strain type force sensor, which is applicable to the rapid patching tooling of the strain type force sensor mentioned above, and comprises:

[0017] S1: Place the strain gauge with glue on the outer surface on the patch block, and place the wires connected to the strain gauge in the wiring groove of the positioning column;

[0018] S2: Insert the assembled quick patch tooling into the sensor body to be patched;

[0019] S3: Push the traction rod toward the inside of the sensor body, so that the top ring sleeved and fixed with the traction rod moves toward the end of the positioning column provided with the accommodating window, and lifts up the patch block, so that the strain gauge on the patch block is bonded to the inner wall of the sensor body;

[0020] S4: After standing for the first time, the strain gauge is completely bonded and fixed to the inner wall of the sensor body, and the traction rod is pulled toward the outside of the sensor body, so that the top ring, which is sleeved and fixed with the traction rod, moves toward the end of the positioning column away from the accommodation window, and the patch block is separated from the strain gauge;

[0021] S5: Remove the quick patch tooling from the sensor body.

[0022] Therefore, the present invention has the following beneficial effects:

[0023] The invention discloses a fast patch tool and method for a strain type force sensor, which is suitable for patching internal patch type force sensors, and can realize fast and accurate patching of strain type internal patch type sensors, thereby improving production efficiency and product quality.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 It is a schematic diagram of the external patch of the strain type force sensor;

[0027] Figure 2 It is a schematic diagram of the patch inside the strain type force sensor;

[0028] Figure 3 It is a schematic diagram of the prior art patch tooling;

[0029] Figure 4 It is a schematic diagram of the overall structure of the rapid patch tooling of the present invention;

[0030] Figure 5 It is an exploded view of the quick patch tooling of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the positioning ring of the present invention;

[0032] Figure 7 is a cross-sectional view of a positioning ring of the present invention;

[0033] Figure 8 is an axonometric view of the positioning column of the present invention;

[0034] Fig. 9 is an axonometric view of the positioning column of the present invention from another viewing angle;

[0035] Fig.10 It is a schematic structural diagram of the top ring of the present invention;

[0036] Fig.11 It is an axonometric view of the top surface of the patch block of the present invention from one viewing angle;

[0037] Fig.12 It is an axonometric view of the top surface of the patch block of the present invention from another perspective;

[0038] Fig.13 It is an axonometric view of the bottom surface of the patch block of the present invention from one viewing angle;

[0039] Fig.14 It is a schematic diagram of the structure of multiple patch blocks of the present invention;

[0040] Fig.15 It is a structural schematic diagram of the traction rod of the present invention;

[0041] Fig.16 It is a flow chart of the rapid patch method of the present invention.

[0042] In the figure: 1. outer patch position; 2. inner patch position; 3. pressure plate; 4. positioning ring; 5. positioning column; 6. traction rod; 7. patch block; 8. top ring; 9. first screw hole; 10. wiring groove; 11. accommodation window; 12. head end; 13. tail end; 14. through hole; 15. second screw hole; 16. top surface; 17. step; 18. first curved surface; 19. second curved surface; 20. annular groove; 21. elastic retaining ring; 22. large circular ring portion; 23. small circular ring portion; 24. limiting surface; 25. through hole; 26. rod body; 27. traction cap; 28. first step surface; 29. ​​second step surface. DETAILED DESCRIPTION

[0043] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0044] like Figure 4 and Figure 5 As shown, a quick patch tooling of a strain type force sensor includes a positioning ring 4, a positioning column 5 and a traction rod 6. The positioning column 5 is sleeved on the traction rod 6, and the positioning ring 4 is sleeved on the positioning column 5. At least one accommodating window 11 is provided on the side surface of one end of the positioning column 5, and a patch block 7 is provided in the accommodating window 11. A top ring 8 is provided in the positioning column 5, and the top ring 8 is sleeved on the traction rod 6.

[0045] The rapid patch tooling of a strain type force sensor of the present invention is suitable for patching internal patch force sensors, and can realize rapid and accurate patching of strain type internal patch sensors, thereby improving production efficiency and product quality.

[0046] When the positioning ring 4 is sleeved on the positioning post 5 , the positioning ring 4 and the positioning post 5 can slide relative to each other to adjust the position of the positioning ring 4 sleeved on the positioning post 5 .

[0047] like Figure 5 , Figure 8 and Fig. 9 As shown, the interior of the positioning column 5 is hollow, so that the traction rod 6 can extend into and pass through the positioning column 5. A through hole 25 is provided at one end of the positioning column 5. The inner diameter of the through hole 25 is equal to or slightly larger than the outer diameter of the rod body 26 of the traction rod 6, so that the traction rod 6 can move along the axial direction of the positioning column 5.

[0048] Preferably, the positioning ring 4 is provided with a plurality of first screw holes 9 , which are evenly distributed on the positioning ring 4 , and the positioning ring 4 is connected to the positioning column 5 via a first top screw.

[0049] like Figure 6 and Figure 7 As shown, the interior of the positioning ring 4 is hollow, so that the positioning ring 4 can be put on the positioning column 5. The cross-section of the positioning ring 4 is T-shaped. The positioning ring 4 can be seen as consisting of a large circular ring portion 22 and a small circular ring portion 23. The outer diameter of the large circular ring portion 22 is larger than the outer diameter of the small circular ring portion 23. When the rapid patch tooling is extended into the sensor for patching, the limiting surface 24 of the large circular ring portion 22 fits with the outer surface of the sensor to be patched, thereby achieving positioning at the required patch depth.

[0050] As an implementation manner, the inner diameter of the positioning ring 4 is equal to the maximum outer diameter of the positioning post 5 , so that the positioning ring 4 can be sleeved on the positioning post 5 .

[0051] As an implementation manner, the inner diameter of the positioning ring 4 is slightly larger than the maximum outer diameter of the positioning post 5 , so that the positioning ring 4 can be sleeved on the positioning post 5 .

[0052] When the positioning ring 4 is sleeved on the positioning column 5, the positioning ring 4 and the positioning column 5 can slide relative to each other to adjust the position of the positioning ring 4 sleeved on the positioning column 5. When adjusted to a suitable position, the first top screw cooperates with the first screw hole 9, and the first top screw passes through the first screw hole 9 and presses on the positioning column 5, thereby achieving fixation between the positioning ring 4 and the positioning column 5. The first top screw is not shown in the figure.

[0053] like Figure 7 As shown, the first screw hole 9 is disposed on the small annular portion 23 , and the first screw hole 9 penetrates through the outer wall of the small annular portion 23 and is connected with the inner space of the positioning ring 4 .

[0054] As an implementation method, Figure 7 As shown, there are two first screw holes 9 , and the two first screw holes 9 are arranged opposite to each other on the outer wall of the small annular portion 23 of the positioning ring 4 .

[0055] As an implementation manner, there are three first screw holes 9 , and the three first screw holes 9 are evenly arranged around the outer wall of the small circular portion 23 of the positioning ring 4 .

[0056] As an implementation manner, there are four first screw holes 9 , and the four first screw holes 9 are evenly arranged around the outer wall of the small circular portion 23 of the positioning ring 4 .

[0057] That is to say, the number and position of the first screw holes 9 are not fixed, and technical personnel in this field can selectively set them according to actual needs. The number and position of the first screw holes 9 that can achieve the connection and fixation between the positioning ring 4 and the positioning column 5 through the first screw holes 9 and the first top screws are within the protection scope of the present invention.

[0058] Preferably, at least one wiring groove 10 is provided on the outer surface of the positioning column 5 , one end of the wiring groove 10 is connected to the accommodating window 11 , and the other end of the wiring groove 10 extends to an end of the positioning column 5 away from the accommodating window 11 .

[0059] It can be understood that the wiring trough 10 is used to accommodate the wires connected to the strain gauge.

[0060] like Figure 8 and Fig. 9 As shown, the accommodating window 11 and the interior of the positioning column 5 are connected.

[0061] As an implementation manner, there is one wiring groove 10 and one accommodating window 11 , one end of the wiring groove 10 is connected to the accommodating window 11 , and the other end of the wiring groove 10 extends to an end of the positioning column 5 away from the accommodating window 11 .

[0062] As an implementation mode, there are two wiring troughs 10 and two receiving windows 11 . One end of the two wiring troughs 10 is connected to the two receiving windows 11 respectively, and the other end of the two wiring troughs 10 extends to the end of the positioning column 5 away from the receiving window 11 .

[0063] As an implementation manner, there are four wiring troughs 10 and four receiving windows 11 , one end of the four wiring troughs 10 is connected to the four receiving windows 11 respectively, and the other end of the four wiring troughs 10 extends to the end of the positioning column 5 away from the receiving window 11 .

[0064] As an implementation manner, the wiring groove 10 is a rectangular groove.

[0065] As an implementation method, the wiring trough 10 is linear.

[0066] As a preference, Fig.10 As shown, the top ring 8 includes a head end 12 and a tail end 13, the head end 12 is connected to the tail end 13, the head end 12 is in a truncated cone shape, and the tail end 13 is in a cylindrical shape. A through hole 14 is provided inside the top ring 8 and axially penetrates the head end 12 and the tail end 13. The top ring 8 is sleeved on the traction rod 6 through the through hole 14.

[0067] As an embodiment, the inner diameter of the through hole 14 is equal to the outer diameter of the rod body 26 of the traction rod 6, so that the rod body 26 of the traction rod 6 passes through the through hole 14 of the top ring 8 so that the top ring 8 is sleeved on the rod body 26 of the traction rod 6.

[0068] In one embodiment, the inner diameter of the through hole 14 is slightly larger than the outer diameter of the rod body 26 of the traction rod 6, so that the rod body 26 of the traction rod 6 passes through the through hole 14 of the top ring 8 so that the top ring 8 is sleeved on the rod body 26 of the traction rod 6.

[0069] It can be understood that when the top ring 8 is sleeved on the traction rod 6 , the top ring 8 and the traction rod 6 can slide relative to each other to adjust the position of the top ring 8 sleeved on the traction rod 6 .

[0070] Preferably, a plurality of second screw holes 15 are provided on the top ring 8, and the plurality of second screw holes 15 are evenly distributed on the side of the tail end 13. The second screw holes 15 penetrate the side wall of the tail end 13 and are connected with the through hole 14. The top ring 8 is connected to the traction rod 6 through a second top screw.

[0071] When the top ring 8 is sleeved on the traction rod 6, the top ring 8 and the traction rod 6 can slide relative to each other to adjust the position of the top ring 8 sleeved on the traction rod 6. When adjusted to a suitable position, the second top screw cooperates with the second screw hole 15, and the second top screw passes through the second screw hole 15 and presses on the rod body 26 of the traction rod 6, thereby achieving fixation between the top ring 8 and the traction rod 6. The second top screw is not shown in the figure.

[0072] As an implementation manner, there are two second screw holes 15 , and the two second screw holes 15 are oppositely arranged on the side wall of the rear end 13 of the top ring 8 .

[0073] As an implementation manner, there are three second screw holes 15 , and the three second screw holes 15 are evenly arranged around the side wall of the rear end 13 of the top ring 8 .

[0074] As an implementation manner, there are four second screw holes 15 , and the four second screw holes 15 are evenly arranged around the side wall of the rear end 13 of the top ring 8 .

[0075] That is to say, the number and position of the second screw holes 15 are not fixed, and those skilled in the art can selectively set them according to actual needs. The number and position of the second screw holes 15 that can achieve the connection and fixation between the top ring 8 and the rod body 26 of the traction rod 6 through the second screw holes 15 and the second top screws are within the protection scope of the present invention.

[0076] Preferably, the number of patch blocks 7 is the same as the number of accommodating windows 11 , and each accommodating window 11 is provided with a patch block 7 , and there is an interference fit between the patch block 7 and the accommodating window 11 .

[0077] As another implementation, the patch block 7 and the accommodating window 11 are clearance-fitted.

[0078] As an implementation manner, the number of the accommodating window 11 is one, the number of the patch block 7 is also one, and when the patch is performed by a rapid patch tool, only one strain gauge can be pasted at a time.

[0079] As an implementation mode, the number of the accommodating windows 11 is 2, the number of the patch blocks 7 is also 2, and the two accommodating windows 11 are arranged opposite to each other on the positioning column 5. When the patch is performed by the rapid patch tooling, 2 strain gauges can be pasted at one time.

[0080] As an implementation method, Figure 5 , Figure 8 and Fig. 9 As shown, the number of the accommodating windows 11 is 4, and the number of the patch blocks 7 is also 4. Fig.14 As shown; four receiving windows 11 are evenly distributed around the positioning column 5, and four strain gauges can be pasted at one time when the patch is performed by the rapid patch tooling.

[0081] As an implementation manner, the shape of the receiving window 11 is rectangular.

[0082] As an implementation manner, the shape of the receiving window 11 is circular.

[0083] As an implementation manner, the shape of the receiving window 11 is a triangle.

[0084] That is to say, the present invention does not impose any specific restrictions on the number and shape of the accommodating windows 11, and those skilled in the art can set them according to actual needs.

[0085] As a preference, Fig.11 , Fig.12 and Fig.13 As shown, the patch block 7 includes a top surface 16 and a bottom surface, the top surface 16 is a convex cylindrical surface, and a step 17 perpendicular to the top surface 16 is provided on the top surface 16, and the bottom surface includes a first curved surface 18 and a second curved surface 19, the first curved surface 18 is connected to the second curved surface 19, the first curved surface 18 is a concave truncated cone curved surface, and the second curved surface 19 is a concave cylindrical curved surface.

[0086] like Fig.13 As shown, at the junction of the first curved surface 18 and the second curved surface 19 , the curvature radii of the first curved surface 18 and the second curved surface 19 are equal, and the curvature radius of the first curved surface 18 gradually increases in the direction away from the second curved surface 19 .

[0087] As a preference, Figure 8 and Fig. 9 As shown, an annular groove 20 is provided on the positioning column 5 , and the annular groove 20 is used for fixing and installing an elastic retaining ring 21 . The annular groove 20 is located at the accommodating window 11 .

[0088] Specifically, the elastic retaining ring 21 can be made of rubber material, and the elastic retaining ring 21 and the annular groove 20 can be installed and fixed by welding or strong adhesive bonding.

[0089] When the quick patch tooling is assembled, an elastic retaining ring 21 is provided in the annular groove 20, and the corresponding elastic retaining ring 21 in the area of ​​the accommodating window 11 is pressed just against the top surface 16 of the patch block 7. Specifically, Fig.12 As shown, the step 17 divides the top surface 16 of the patch block 7 into two parts, namely a first step surface 28 and a second step surface 29. The height of the first step surface 28 is lower than that of the second step surface 29. The elastic retaining ring 21 is just pressed on the second step surface 29. When the patch is not being performed, the elastic retaining ring 21 is in a contracted state. When the patch operation is performed, the strain gauge is placed on the second step surface 29 of the patch block 7, the traction rod 6 is pushed, and the top ring 8 lifts the patch block 7. The elastic retaining ring 21 is in an expanded state. When the patch is completed, the traction rod 6 is retracted, and after the top ring 8 withdraws from the patch block 7, the elastic retaining ring 21 contracts to make the patch block 7 retreat into the accommodating window 11.

[0090] Preferably, a traction cap 27 is provided at one end of the traction rod 6 , the length of the traction rod 6 is greater than the length of the positioning column 5 , and the length of the positioning column 5 is greater than the length of the positioning ring 4 .

[0091] like Fig.15 As shown, the outer diameter of the traction cap 27 is larger than the outer diameter of the rod body 26 of the traction rod 6, which facilitates the application of pulling force and pushing force to the traction rod 6 to achieve the stretching operation of the traction rod 6.

[0092] The present invention also provides a method for rapid patching of a strain-type force sensor, which is applicable to the rapid patching tooling of the strain-type force sensor mentioned above. The positioning ring 4 and the positioning column 5 of the patching tooling are fixed by a first top screw. The position of the first top screw fixing the positioning column 5 is determined according to the depth of the patch required by the force sensor to be patched. At the same time, a wiring groove 10 is reserved on the positioning column 5 for leading the wiring of the strain gauge to the outside of the sensor. The traction rod 6 and the top ring 8 are fixed by a second top screw. The fixed position is also determined according to the depth of the patch required by the force sensor to be patched, that is, the relative position between the positioning column 5 and the positioning ring 4, and the relative position between the traction rod 6 and the top ring 8 can be adjusted according to the depth of the patch required by the force sensor to be patched. The patch block 7 is installed in the four receiving windows 11 at the bottom of the positioning column 5, and the patch block 7 and the four receiving windows 11 at the bottom of the positioning column 5 are the same or matched in length and width, and a clearance fit is adopted. In terms of thickness, the thickness of the patch block 7 is slightly lower than the receiving window 11. The inner slope (first curved surface 18) of the patch block 7 can be fitted with the outer slope (side of the head end 12) of the top ring 8. After the positions of the various parts of the tooling are determined according to the patch depth, the patch can be placed. Fig.16 As shown, the specific steps are as follows:

[0093] S1: Place the strain gauge with glue coated on the outer surface on the patch block 7, and place the wires connected to the strain gauge in the wiring groove 10 of the positioning column 5.

[0094] S2: Insert the assembled quick patch tooling into the sensor body to be patched.

[0095] S3: Push the traction rod 6 toward the inside of the sensor body, so that the top ring 8 sleeved and fixed with the traction rod 6 moves toward the end of the positioning column 5 provided with the accommodating window 11, and lifts up the patch block 7, so that the strain gauge on the patch block 7 is bonded to the inner wall of the sensor body.

[0096] S4: After standing still for the first period of time, the strain gauge is completely bonded and fixed to the inner wall of the sensor body. The traction rod 6 is pulled toward the outside of the sensor body, so that the top ring 8, which is sleeved and fixed with the traction rod 6, moves toward the end of the positioning column 5 away from the accommodating window 11. At this time, the patch block 7 is separated from the strain gauge.

[0097] S5: Remove the quick patch tooling from the sensor body.

[0098] It should be noted that the present invention can be used to patch only one strain gauge or multiple strain gauges in one operation, which may depend on the number of accommodating windows 11 and patch blocks 7. It can be understood that even if multiple accommodating windows 11 and patch blocks 7 are provided, strain gauges can be placed on only one or several patch blocks 7, thereby achieving the pasting of any set number of strain gauges.

[0099] It is understood that, generally, the shape of the wiring trough 10 is as follows Figure 8 and Fig. 9 The wiring trough 10 is shown as a straight line, but it cannot be ruled out that in some special or specific cases, the shape of the wiring trough 10 can also be S-shaped, square-wave-shaped, spiral-shaped, etc., which can be modified and replaced by those skilled in the art.

[0100] It should also be noted that, normally, the area of ​​the second curved surface 19 of the patch block 7 where the strain gauge is placed is equal to or greater than the area of ​​the strain gauge, but it is not excluded that the strain gauge can be placed and pasted when the area of ​​the second curved surface 19 of the patch block 7 is smaller than the area of ​​the strain gauge.

[0101] The purpose of standing still for the first time in step S4 is to allow the glue on the strain gauge to fully bond and solidify with the inner wall of the sensor. Specifically, the first time ranges from 1 to 10 seconds.

[0102] As an implementation method, the first time length can be 1s. After the strain gauge on the patch block 7 is bonded to the inner wall of the sensor body, wait for 1s and then pull the traction rod 6 toward the outside of the sensor body. At this time, the patch block 7 is separated from the strain gauge under the action of the contraction force of the elastic retaining ring 21 and retreats into the accommodating window 11.

[0103] As an implementation method, the first time length can be 5 seconds. After the strain gauge on the patch block 7 is bonded to the inner wall of the sensor body, wait for 5 seconds and then pull the traction rod 6 toward the outside of the sensor body. At this time, the patch block 7 is separated from the strain gauge under the action of the contraction force of the elastic retaining ring 21 and retreats into the accommodating window 11.

[0104] As an implementation method, the first time length can be 10 seconds. After the strain gauge on the patch block 7 is bonded to the inner wall of the sensor body, wait for 10 seconds and then pull the traction rod 6 toward the outside of the sensor body. At this time, the patch block 7 is separated from the strain gauge under the action of the contraction force of the elastic retaining ring 21 and retreats into the accommodating window 11.

[0105] Therefore, the present invention has the following beneficial effects:

[0106] The invention discloses a fast patch tool and method for a strain type force sensor, which can realize fast and accurate patching of strain type internal patch type sensors, thereby improving production efficiency and product quality.

[0107] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0108] It is not difficult for those skilled in the art to understand that the present invention includes any combination of the invention content and specific implementation methods of the above specification and the various parts shown in the drawings. Due to the limited space and to make the specification concise, the various schemes composed of these combinations are not described one by one. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0109] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fast patch tooling for a strain type force sensor, characterized in that: It includes a positioning ring, a positioning column and a traction rod, wherein the positioning column is sleeved on the traction rod, the positioning ring is sleeved on the positioning column, at least one accommodating window is provided on the side of one end of the positioning column, a patch block is provided in the accommodating window, a top ring is provided in the positioning column, and the top ring is sleeved on the traction rod.

2. The rapid patch tooling of a strain type force sensor according to claim 1, characterized in that: The positioning ring is provided with a plurality of first screw holes, and the plurality of first screw holes are evenly distributed on the positioning ring. The positioning ring is connected to the positioning column via a first top screw.

3. The rapid patch tooling of a strain type force sensor according to claim 1, characterized in that: At least one wiring groove is provided on the outer surface of the positioning column, one end of the wiring groove is connected to the accommodating window, and the other end of the wiring groove extends to an end of the positioning column away from the accommodating window.

4. The rapid patch tooling of a strain type force sensor according to claim 1, characterized in that: The top ring includes a head end and a tail end, the head end is connected to the tail end, the head end is in a truncated cone shape, and the tail end is in a cylindrical shape. A through hole is provided inside the top ring and axially penetrates the head end and the tail end, and the top ring is sleeved on the traction rod through the through hole.

5. The rapid patch tooling of a strain type force sensor according to claim 4, characterized in that: The top ring is provided with a plurality of second screw holes, which are evenly distributed on the side of the tail end. The second screw holes penetrate the side wall of the tail end and are connected with the through hole. The top ring is connected to the traction rod through a second top screw.

6. The rapid patch tooling of a strain type force sensor according to claim 1, characterized in that: The number of the patch blocks is the same as the number of the accommodating windows. Each of the accommodating windows is provided with a patch block, and the patch blocks are interference-fitted with the accommodating windows.

7. A quick patch tool for a strain type force sensor according to claim 1 or 6, characterized in that: The patch block includes a top surface and a bottom surface, the top surface is a convex cylindrical surface, and a step perpendicular to the top surface is provided on the top surface, and the bottom surface includes a first curved surface and a second curved surface, the first curved surface is connected to the second curved surface, the first curved surface is a concave truncated cone curved surface, and the second curved surface is a concave cylindrical curved surface.

8. The rapid patch tooling of a strain type force sensor according to claim 1, characterized in that: The positioning column is provided with an annular groove, the annular groove is used for fixing and installing an elastic retaining ring, and the annular groove is located at the accommodating window.

9. The rapid patch tooling of a strain type force sensor according to claim 1, characterized in that: A traction cap is provided at one end of the traction rod, the length of the traction rod is greater than the length of the positioning column, and the length of the positioning column is greater than the length of the positioning ring.

10. A method for rapid patching of a strain type force sensor, applicable to a rapid patching tool for a strain type force sensor according to any one of claims 1 to 9, characterized in that: include: S1: Place the strain gauge with glue on the outer surface on the patch block, and place the wires connected to the strain gauge in the wiring groove of the positioning column; S2: Insert the assembled quick patch tooling into the sensor body to be patched; S3: Push the traction rod toward the inside of the sensor body, so that the top ring sleeved and fixed with the traction rod moves toward the end of the positioning column provided with the accommodating window, and lifts up the patch block, so that the strain gauge on the patch block is bonded to the inner wall of the sensor body; S4: After standing still for a first period of time, the traction rod is pulled toward the outside of the sensor body, so that the top ring, which is sleeved and fixed with the traction rod, moves toward the end of the positioning column away from the accommodation window, and the patch block is separated from the strain gauge; S5: Remove the quick patch tooling from the sensor body.

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