Product tension measuring jig and tension measuring device

Abstract

The utility model provides a product tension measuring jig and a tension measuring device, the product tension measuring jig comprises a base and an upper cover, the base is provided with a bearing surface and a positioning column, and the free end of the positioning column protrudes out of the bearing surface; the upper cover is detachably connected to the base, a containing cavity is formed between the upper cover and the base, a through hole is formed in the upper cover in a penetrating mode, the through hole is communicated with the containing cavity, and the extending direction of the through hole is perpendicular to the bearing face; the tension measuring device comprises a fixed seat, a tension head and the product tension measuring jig, the product tension measuring jig is arranged on the fixed seat, a clamp is arranged on the tension head, the clamp corresponds to the through hole of the product tension measuring jig, and the clamp can move away from the through hole in the extending direction of the through hole; according to the utility model, the product can be conveniently fixed, the tension test can be conveniently carried out, and the accuracy of the test result can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of testing, in particular to a product tension measuring fixture and a tension measuring device. Background Art

[0002] like Figure 1 and Figure 2 As shown, product 10 is an injection molded part with multiple metal inserts 102, one end of which is provided with a metal part 101, and the metal part 101 is welded to one of the metal inserts 102. After the injection molding is completed, it is generally necessary to detect whether the welding firmness of the metal part 101 and the metal insert 102 meets the standard, that is, to pull and detect the magnitude of the pulling force separating the metal part 101 and the metal insert 102 through a tensile measuring device. If the pulling force is greater than the standard value, it is a qualified product. Since the structure of product 10 is relatively complex and inconvenient to fix, it is difficult to ensure that the direction of the pulling force is just perpendicular to the welding surface of the metal part 101 and the metal insert 102 during the tensile test, resulting in inaccurate test results. Therefore, there is an urgent need for a fixture that can fix the product 10 and facilitate tensile testing. Utility Model Content

[0003] The first purpose of the utility model is to provide a product tensile force measuring fixture which is convenient for fixing products and conducting tensile force tests.

[0004] The second object of the utility model is to provide a tension measuring device including the above-mentioned product tension measuring fixture.

[0005] In order to achieve the above-mentioned first purpose, the utility model provides a product tensile force measuring fixture, including a base and an upper cover, the base is provided with a supporting surface and a positioning column, the free end of the positioning column protrudes from the supporting surface; the upper cover is detachably connected to the base, and an accommodating cavity is formed between the upper cover and the base, and the upper cover is provided with a through hole through the through hole, which is connected to the accommodating cavity, and the extension direction of the through hole is perpendicular to the supporting surface.

[0006] It can be seen from the above scheme that by providing a supporting surface for supporting the product and by providing a positioning column for positioning the product, the product can be placed stably on the base; by providing a perforation, the part of the product to be tested is exposed on the outside of the upper cover, which is convenient for the clamp of the tension measuring device to clamp and pull outward to measure whether the tension at the welding point meets the standard. Since the extension direction of the perforation is perpendicular to the supporting surface, the clamp only needs to move in the direction perpendicular to the supporting surface to accurately measure the correct tension, thereby ensuring the accuracy of the measurement result.

[0007] A further solution is that the upper cover is provided with a groove, the groove is sunken in the surface of the upper cover on the side facing away from the base, and the through hole is provided in the groove and communicated with the groove.

[0008] A further solution is that the groove extends along the width direction of the upper cover and passes through the side walls on both sides in the width direction of the upper cover.

[0009] A further solution is that the upper cover is provided with at least one step groove on the side facing the base, the step groove is provided corresponding to the supporting surface, and the step groove constitutes a partial cavity of the accommodating cavity; one of the step grooves is provided corresponding to the groove, and the step groove is connected to the groove through a through hole.

[0010] It can be seen from the above solution that by providing a stepped groove to match the stepped surface of the product, the product can be better fixed to prevent the product from moving during the test process.

[0011] A further solution is that the number of the step grooves is set to be more than two, all the step grooves are arranged along the length direction of the upper cover, all the step grooves are interconnected, and the groove bottoms of all the step grooves are not in the same plane.

[0012] A further solution is that a avoidance hole is opened in the upper cover corresponding to the positioning column, and the free end of the positioning column can extend into the avoidance hole.

[0013] A further solution is that a raised step is provided on the base, and the raised step is higher than the supporting surface; the number of positioning columns is set to be more than two, one of which is provided on the raised step, and the other is provided on the supporting surface.

[0014] A further solution is that the upper cover is provided with at least one first connecting hole; the base is provided with at least one second connecting hole, the second connecting hole is correspondingly arranged and connected to the first connecting hole, the upper cover and the base are connected by a connecting piece, and the connecting piece is connected in the first connecting hole and the second connecting hole.

[0015] A further solution is that the first connecting hole is configured as a U-shaped hole, the first connecting hole is opened toward the side wall of the upper cover, and the position of the connecting member in the first connecting hole is adjustable.

[0016] In order to achieve the above-mentioned second purpose, the utility model provides a tensile force measuring device, including a fixed seat, a tensile head and a product tensile force measuring fixture as above, the product tensile force measuring fixture is arranged on the fixed seat, and a clamp is arranged on the tensile head, the clamp is arranged corresponding to the perforation of the product tensile force measuring fixture, and the clamp can move away along the extension direction of the perforation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of a product that is fixed and tested using the utility model.

[0018] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0019] Figure 3It is a structural diagram of an embodiment of a tension measuring fixture of the utility model.

[0020] Figure 4 It is a side view of an embodiment of the tension measuring fixture of the utility model.

[0021] Figure 5 It is a top view of an embodiment of the tension measuring fixture of the utility model.

[0022] Figure 6 It is an exploded view of an embodiment of the tension measuring fixture of the utility model.

[0023] Figure 7 It is a structural diagram of an embodiment of the tension measuring device of the utility model.

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0025] Product tensile force measurement fixture example:

[0026] See also Figures 3 to 6 , and combined with Figure 1 and Figure 7 A product tensile force measuring fixture provided in this embodiment includes a base 1, an upper cover 2 and at least one connecting member 3. This embodiment takes two connecting members 3 as an example.

[0027] The base 1 is provided with a supporting surface 11 and at least one positioning column 12, and two positioning columns 12 are used as an example in this embodiment. The supporting surface 11 is used to abut against the bottom surface of the product 10; the positioning column 12 is detachably connected to the base 1, and the free end of the positioning column 12 protrudes from the supporting surface 11, and is used to cooperate with the positioning hole 103 of the product 10. The upper cover 2 is detachably connected to the base 1, and a receiving cavity 4 is formed between the upper cover 2 and the base 1. The product 10 is arranged in the receiving cavity 4 to prevent the product 10 from being deformed during the test process.

[0028] The upper cover 2 is provided with a through hole 21 which is connected to the accommodating cavity 4. The extension direction of the through hole 21 is perpendicular to the supporting surface 11. The part to be tested of the product 10 is exposed in the through hole 21. Preferably, the part to be tested passes through the through hole 21, which is convenient for the clamp 301 to clamp and pull it to move. In this embodiment, the part to be tested is the welding point between the metal part 101 and one of the metal inserts 102. The shape of the through hole 21 matches the shape of the metal part 101, so that the metal part 101 is completely exposed in the through hole 21. During the test, the clamp 301 clamps the metal part 101 and moves away from the metal insert 102 in a direction perpendicular to the welding surface.

[0029] In order to facilitate the clamp 301 to clamp the part to be tested, the upper cover 2 is provided with a groove 22, which is recessed in the surface of the upper cover 2 on the side facing away from the base 1, and extends along the width direction of the upper cover 2 and passes through the two side walls of the upper cover 2 in the width direction. The through hole 21 is arranged in the groove 22 and communicates with the groove 22. Preferably, the through hole 21 is arranged on the groove bottom of the groove 22. The groove width of the groove 22 matches the thickness of the clamping block of the clamp 301, and the two clamping blocks are arranged in an arrangement along the extension direction of the groove 22. The two clamping blocks can move relatively close to or away from each other along the groove wall of the groove 22, so as to ensure that the part to be tested can be accurately clamped.

[0030] In order to avoid the positioning column 12, the upper cover 2 is provided with avoidance holes 23 corresponding to the positioning column 12, the number of the avoidance holes 23 is equal to the number of the positioning column 12, and the avoidance holes 23 are arranged one by one with the positioning column 12. The diameter of the avoidance hole 23 is larger than the diameter of the positioning column 12, and the free end of the positioning column 12 can extend into the avoidance hole 23.

[0031] Since the end surface of the product 10 close to the part to be tested is provided with a plurality of stepped surfaces, correspondingly, the upper cover 2 is provided with at least one stepped groove 24 on the side facing the base 1, and the stepped groove 24 is arranged opposite to the supporting surface 11, and the stepped groove 24 constitutes a part of the cavity 4. Preferably, the number and structure of the stepped grooves 24 match the steps corresponding to the product 10. In this embodiment, four stepped grooves 24 are taken as an example, and the four stepped grooves 24 are arranged along the length direction of the upper cover 2, and the four stepped grooves 24 are interconnected. The bottoms of the four stepped grooves 24 are not in the same plane, and the bottom of at least one stepped groove 24 can abut against the stepped surface corresponding to the product 10. In this embodiment, preferably, the bottoms of the first and third stepped grooves 24 from left to right abut against the stepped surface corresponding to the product 10, so as to firmly fix the product 10 and prevent the product 10 from moving and deforming.

[0032] exist Figure 4 In the figure, the leftmost stepped groove 24 is arranged correspondingly with the groove 22, and the stepped groove 24 is connected with the groove 22 through the through hole 21. The shape and size of the through hole 21 match the metal part 101, and the size of the through hole 21 is slightly smaller than the size of the metal insert 102 on the product 10, so that the edges of the through hole 21 can abut against the metal insert 102 to prevent the metal insert 102 from moving with the metal part 101 during the test.

[0033] exist Figure 6 In the embodiment, the base 1 is provided with a raised step 13 on a side away from the through hole 21 . The raised step 13 is higher than the supporting surface 11 and is used to abut against another metal insert on one end of the product 10 .

[0034] In this embodiment, the number of the positioning posts 12 is set to two, one of the positioning posts 12 is disposed on the raised step 13 , and the other positioning post 12 is disposed on the supporting surface 11 .

[0035] In order to realize the detachable connection between the upper cover 2 and the base 1, the upper cover 2 is provided with at least one first connection hole 25, and the present embodiment takes two first connection holes 25 as an example. The base 1 is provided with at least one second connection hole 14, the number of the second connection holes 14 is equal to the number of the first connection holes 25, and the second connection holes 14 are arranged one-to-one with the first connection holes 25 and are connected. The upper cover 2 and the base 1 are connected by a connecting member 3, and the connecting member 3 is connected to the first connection hole 25 and the second connection hole 14.

[0036] Specifically: the first connecting hole 25 is set as a U-shaped hole, and the first connecting hole 25 opens toward the side wall of the upper cover 2, so that the position of the connecting member 3 in the first connecting hole 25 can be fine-tuned along the width direction of the upper cover 2, which is beneficial to reduce the processing accuracy of the first connecting hole 25, the second connecting hole 14 and the through hole 21, and ensure that when the part to be tested passes through the through hole 21, the connecting member 3 can pass through the first connecting hole 25 and connect to the second connecting hole 14.

[0037] Example of tensile force measuring device:

[0038] See also Figure 7 , and combined with Figure 6 The present embodiment provides a tension measuring device, comprising a fixing seat 20, a tension head 30 and at least one product tension measuring fixture as in the above embodiment. The product tension measuring fixture is arranged on the fixing seat 20, and the tension head 30 is connected to a force sensor (not shown in the figure) for detecting the magnitude of its tension. A clamp 301 is arranged on the tension head 30, and the clamp 301 is arranged opposite to the through hole 21, and the tension head 30 can at least drive the clamp 301 to move away along the extension direction of the through hole 21.

[0039] Of course, the tension measuring device may also include an X-direction translation module and a Y-direction translation module to drive the tension head 30 and the clamp 301 to move back and forth in the X and Y directions, so that the clamp 301 can face the through hole 21 and accurately clamp the part to be tested.

[0040] The clamp 301 of this embodiment can be a pneumatic clamp, a hydraulic clamp or a manual clamp. This embodiment takes a manual clamp as an example. When the two clamping blocks of the manual clamp are respectively arranged on both sides of the part to be tested, the two clamping blocks are made relatively close to each other by manually tightening the screws to clamp the part to be tested.

[0041] In summary, the utility model provides a supporting surface for supporting the product and provides a positioning column for positioning the product, so that the product can be placed stably on the base; and provides a through hole for exposing the part of the product to be tested on the outside of the upper cover, so that it is convenient for the clamp of the tension measuring device to clamp and pull outward to measure whether the tension at the welding point meets the standard. Since the extension direction of the through hole is perpendicular to the supporting surface, the clamp only needs to move in the direction perpendicular to the supporting surface to accurately measure the correct tension, thereby ensuring the accuracy of the measurement result.

[0042] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A product tension measuring fixture, characterized in that: include: A base, wherein a supporting surface and a positioning column are provided on the base, and a free end of the positioning column protrudes from the supporting surface; An upper cover is detachably connected to the base, a receiving cavity is formed between the upper cover and the base, a through hole is penetrated through the upper cover, the through hole is connected to the receiving cavity, and an extension direction of the through hole is perpendicular to the supporting surface.

2. The product tensile force measuring fixture according to claim 1, characterized in that: The upper cover is provided with a groove, the groove is recessed in a surface of the upper cover facing away from the base, and the through hole is provided in the groove and communicated with the groove.

3. The product tensile force measuring fixture according to claim 2, characterized in that: The groove extends along the width direction of the upper cover and passes through the side walls on both sides of the upper cover in the width direction.

4. The product tensile force measuring fixture according to claim 2, characterized in that: The upper cover is provided with at least one stepped groove on a side facing the base, the stepped groove is provided corresponding to the supporting surface, and the stepped groove constitutes a part of the cavity of the accommodating cavity; One of the stepped grooves is arranged corresponding to the groove, and the stepped groove is connected to the groove through the through hole.

5. The product tensile force measuring fixture according to claim 4, characterized in that: The number of the step grooves is set to be more than two, all the step grooves are arranged along the length direction of the upper cover, all the step grooves are interconnected, and the groove bottoms of all the step grooves are not in the same plane.

6. The product tensile force measuring fixture according to claim 1, characterized in that: The upper cover is provided with an avoidance hole corresponding to the positioning column, and the free end of the positioning column can extend into the avoidance hole.

7. The product tension measuring fixture according to claim 1, characterized in that: The base is provided with a raised step, and the raised step is higher than the supporting surface; The number of the positioning posts is set to be more than two, one of the positioning posts is arranged on the raised step, and the other positioning post is arranged on the supporting surface.

8. The product tension measuring fixture according to claim 1, characterized in that: The upper cover is provided with at least one first connecting hole; The base is provided with at least one second connection hole, which is correspondingly provided and connected to the first connection hole. The upper cover and the base are connected by a connecting member, and the connecting member is connected in the first connection hole and the second connection hole.

9. The product tensile force measuring fixture according to claim 8, characterized in that: The first connection hole is configured as a U-shaped hole, the first connection hole is opened toward the side wall of the upper cover, and the position of the connection member in the first connection hole is adjustable.

10. A tensile force measuring device, characterized in that: It comprises a fixed seat, a tension head and at least one product tension measuring jig as described in any one of claims 1 to 9 above, wherein the product tension measuring jig is arranged on the fixed seat, the tension head is provided with a clamp, the clamp is arranged corresponding to the through hole of the product tension measuring jig, and the clamp can move away along the extension direction of the through hole.

Images