Universal testing device for testing bonding strength of automobile exterior trimming part

Abstract

The utility model discloses a general test device for testing the bonding strength of an automobile exterior trimming part, which comprises a stretching assembly, a positioning assembly and an auxiliary fixing assembly which are sequentially arranged on a test bed in the front-back direction, the stretching assembly comprises a cross beam which is movably arranged on the test bed in the front-back direction, a traction rope connected between the cross beam and a gluing butt joint body of the automobile exterior trimming part, and a tension sensor connected to the traction rope in series; the positioning assembly comprises a tool bottom plate arranged on the test bed, a limiting column vertically arranged on the tool bottom plate, and a pair of positioning supporting rails arranged on the tool bottom plate in the front-back direction and arranged on the left side and the right side of the limiting column correspondingly. The auxiliary fixing assembly comprises a vertical wall plate vertically arranged on the test bench through a support, a pair of fixing ropes arranged on the vertical wall plate, and drag hooks arranged on the fixing ropes and used for hooking the automobile exterior trimming part. According to the utility model, the universality and applicability of the bonding strength test of the automobile exterior trimming part are improved, and the test efficiency is high.

Description

Technical Field

[0001] This utility model relates to the field of automotive exterior component bonding strength testing technology, specifically to a universal testing device for testing the bonding strength of automotive exterior components. Background Technology

[0002] Automotive exterior parts include various components such as air deflectors and spoilers, many of which are bonded to the vehicle body using adhesive bonding (adhesive bonding). To ensure the adhesive strength of exterior parts in new car models, it is necessary to conduct adhesive strength tests to guarantee their reliable performance.

[0003] Conventional methods for testing the bond strength of automotive exterior components are performed on a tensile testing machine. However, this method has poor versatility and applicability, and its testing efficiency is also low. Therefore, it is necessary to improve existing bond strength testing techniques for automotive exterior components to address these issues. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a universal testing device for testing the adhesive strength of automotive exterior parts, aiming to improve the versatility and applicability of the adhesive strength test for automotive exterior parts, and to increase the efficiency of the test. The specific technical solution is as follows:

[0005] A universal testing device for testing the adhesive strength of automotive exterior parts includes a horizontally arranged test platform, a tensile component, a positioning component, and an auxiliary fixing component arranged sequentially and at intervals on the test platform in a front-to-back direction. The tensile component includes a crossbeam arranged in a left-to-right direction and movable in a front-to-back direction on the test platform, a traction rope connecting the crossbeam and the bonded joint of the automotive exterior part, and a tension sensor connected in series with the traction rope. The positioning component includes a tooling base plate on the test platform, a limiting post erected on the tooling base plate to limit the movement space of the automotive exterior part and the bonded joint, and a pair of positioning support rails arranged in a front-to-back direction on the tooling base plate and positioned on the left and right sides of the limiting post to position and support the lower edge of the automotive exterior part or the bonded joint. The auxiliary fixing component includes a vertical wall panel erected on the test platform by a bracket, a pair of fixing ropes on the vertical wall panel, and hooks on the fixing ropes for hooking the automotive exterior part.

[0006] In this invention, the tensile assembly further includes a pair of longitudinal guide rails spaced apart on the test bench, and the crossbeam is movable along the longitudinal guide rails in the front-back direction.

[0007] In this utility model, the tensile assembly further includes a traction seat disposed at the front end of the test bench, a lead screw connecting nut disposed on the crossbeam, a lead screw rotatably disposed on the traction seat and threadedly connected to the lead screw connecting nut, and an operating handwheel disposed on the lead screw for driving the lead screw to rotate.

[0008] Preferably, the tensioning assembly further includes a pair of transverse guide rails disposed on the crossbeam, a tension seat disposed on the pair of transverse guide rails that moves in the left-right direction, and one end of the traction rope is connected to the tension seat.

[0009] In this invention, the tensioning assembly further includes a tension display device disposed on the tension seat and electrically connected to the tension sensor.

[0010] Preferably, the limiting posts on the tooling base plate in the positioning assembly include front limiting posts and rear limiting posts arranged at intervals along the front-rear direction.

[0011] In this invention, the positioning component further includes a pair of transverse slide rails disposed on the test bench, and the tooling base plate is movable on the pair of transverse slide rails in the left-right direction.

[0012] Preferably, the number of positioning components is two sets, which are arranged at intervals on the left and right sides of the test bench.

[0013] Preferably, the positioning component further includes a longitudinal positioning groove disposed on the tooling base plate, and the lower end of the limiting post is movably disposed on the longitudinal positioning groove on the tooling base plate and fixed by fastening screws.

[0014] Preferably, pressure flanges are provided on the lower left and right sides of the limiting post, and waist-shaped holes are opened on the pressure flanges along the front-back direction. The limiting post is fixed by fastening screws that pass through the waist-shaped holes on the pressure flanges and are threaded to the tooling base plate, so as to facilitate the adjustment and fixation of the position of the limiting post along the front-back direction.

[0015] In this utility model, the auxiliary fixing component further includes threaded holes densely arranged on the vertical wall panel, and a lifting eye screw is provided at one end of the fixing rope that is connected to the vertical wall panel. The lifting eye screw is threadedly connected to the threaded holes on the vertical wall panel.

[0016] The method of using this utility model is as follows:

[0017] (1) Adhesive bonding: bonding the exterior parts of the car to the car body (adhesive bonding body);

[0018] (2) Installation: Place the glued automotive exterior parts and the glued joint into the movable space between the front and rear limit posts on the test bench; use a fixing rope to fix the automotive exterior parts against the rear limit post (one end of the fixing rope is pulled by a hook to hold the automotive exterior parts, and the other end of the fixing rope is connected to the vertical wall panel by a lug screw); fix one end of the traction rope to the glued joint;

[0019] (3) Test: The operator turns the operating handwheel to drive the screw to rotate, thereby driving the crossbeam to move longitudinally, so that the traction rope pulls the glued joint; during the pulling process, the operator observes the tension data on the tension display device at any time, and stops turning the handwheel when the specified tension is reached; then observe the bonding condition between the automotive exterior parts and the glued joint, and make a corresponding evaluation.

[0020] The beneficial effects of this utility model are:

[0021] First, this utility model provides a universal testing device for testing the bonding strength of automotive exterior parts. The tooling base plate is equipped with adjustable front and rear limit posts, which facilitates the initial installation of automotive exterior parts and glued joints of different sizes and specifications, and is also beneficial for subsequent fixing of automotive exterior parts and glued joints with fixing ropes and traction ropes, resulting in high installation efficiency.

[0022] Secondly, the universal testing device for testing the bonding strength of automotive exterior parts according to this utility model allows for convenient and intuitive testing by operating a handwheel in conjunction with a tension display device.

[0023] Third, the universal testing device for testing the bonding strength of automotive exterior parts according to this utility model has adjustable left and right positions of the tension seat, adjustable left and right positions of a pair of tooling base plates, adjustable front and rear positions of the limiting post, and adjustable rope fixing position on the vertical wall panel, thereby greatly improving the universality and applicability of testing the bonding strength of automotive exterior parts. Attached Figure Description

[0024] Figure 1 This is a schematic diagram (top view) of the overall layout structure of a general testing device for testing the adhesive strength of automotive exterior parts according to this utility model.

[0025] In the diagram: 1. Automotive exterior parts, 2. Adhesive joint of automotive exterior parts, 3. Test bench, 4. Tensile assembly, 5. Positioning assembly, 6. Auxiliary fixing assembly, 7. Crossbeam, 8. Traction rope, 9. Tension sensor, 10. Tooling base plate, 11. Limiting post, 12. Positioning support rail, 13. Bracket, 14. Vertical wall panel, 15. Fixing rope, 16. Hook, 17. Longitudinal guide rail, 18. Traction seat, 19. Screw connecting nut, 20. Screw, 21. Operating handwheel, 22. Transverse guide rail, 23. Tension seat, 24. Tension display device, 25. Front limiting post, 26. Rear limiting post, 27. Transverse slide rail, 28. Longitudinal positioning groove, 29. Threaded hole, 30. Eye bolt. Detailed Implementation

[0026] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0027] like Figure 1 The illustration shows an embodiment of a universal testing device for testing the adhesive strength of automotive exterior parts according to this utility model. It includes a horizontally arranged test bench 3, a tensile assembly 4, a positioning assembly 5, and an auxiliary fixing assembly 6 arranged sequentially at intervals along the front-to-back direction on the test bench 3. The tensile assembly 4 includes a crossbeam 7 arranged in the left-to-right direction and movable along the front-to-back direction on the test bench 3, a traction rope 8 connecting the crossbeam 7 and the adhesive joint 2 of the automotive exterior part 1, and a tension sensor 9 connected in series with the traction rope 8. The positioning assembly 5 includes a tool mounted on the test bench 3. The fixture includes a base plate 10, a limiting post 11 erected on the base plate 10 to restrict the movement space of the automotive exterior part 1 and the glued joint body 2, and a pair of positioning support rails 12 arranged along the front-to-back direction on the base plate 10 and positioned on the left and right sides of the limiting post 11 to position and support the lower edge of the automotive exterior part 1 or the glued joint body 2; the auxiliary fixing assembly 6 includes a vertical wall panel 14 erected on the test bench 3 via a bracket 13, a pair of fixing ropes 15 set on the vertical wall panel 14, and hooks 16 set on the fixing ropes 15 to hook the automotive exterior part 1.

[0028] In this embodiment, the tensile assembly 4 further includes a pair of longitudinal guide rails 17 spaced apart on the test bench 3, and the crossbeam 7 is movably mounted on the longitudinal guide rails 17 in the front-back direction.

[0029] In this embodiment, the tensile assembly 4 further includes a traction seat 18 disposed at the front end of the test bench 3, a lead screw connecting nut 19 disposed on the crossbeam 7, a lead screw 20 rotatably disposed on the traction seat 18 and threadedly connected to the lead screw connecting nut 19, and an operating handwheel 21 disposed on the lead screw 20 for driving the lead screw 20 to rotate.

[0030] Preferably, the tensioning assembly 4 further includes a pair of transverse guide rails 22 disposed on the crossbeam 7, and a tension seat 23 disposed on the pair of transverse guide rails 22 in a left-right direction, with one end of the traction rope 8 connected to the tension seat 23.

[0031] In this embodiment, the tension assembly 4 further includes a tension display device 24 disposed on the tension seat 23 and electrically connected to the tension sensor 9.

[0032] Preferably, the limiting posts 11 on the tooling base plate 10 in the positioning component 5 include a front limiting post 25 and a rear limiting post 26 arranged at intervals along the front-back direction.

[0033] In this embodiment, the positioning component 5 further includes a pair of transverse slide rails 27 disposed on the test bench 3, and the tooling base plate 10 is movably disposed on the pair of transverse slide rails 27 in the left and right direction.

[0034] Preferably, the number of positioning components 5 is two sets, which are arranged at intervals on the left and right sides of the test bench 3.

[0035] Preferably, the positioning component 5 further includes a longitudinal positioning groove 28 disposed on the tooling base plate 10, and the lower end of the limiting post 11 is movably disposed on the longitudinal positioning groove 28 on the tooling base plate 10 and fixed by fastening screws.

[0036] Preferably, pressure flanges are provided on the lower left and right sides of the limiting post 11, and waist-shaped holes are provided on the pressure flanges along the front-back direction. The limiting post is fixed by fastening screws that pass through the waist-shaped holes on the pressure flanges and are threaded to the tooling base plate, so as to facilitate the adjustment and fixation of the position of the limiting post 11 along the front-back direction.

[0037] In this embodiment, the auxiliary fixing component 6 further includes threaded holes 29 densely arranged on the vertical wall panel 14, and a lifting eye screw 30 is provided at one end of the fixing rope 15 connected to the vertical wall panel 14, and the 30 is threadedly connected to the threaded holes 29 on the vertical wall panel 14.

[0038] The usage method of this embodiment is as follows:

[0039] (1) Adhesive bonding: Adhesive bonding is performed between the automotive exterior part 1 and the vehicle body (adhesive bonding body 2);

[0040] (2) Installation: Place the glued automotive exterior part 1 and the glued joint body 2 into the movable space between the front limit post 25 and the rear limit post 26 on the test bench 2; use the fixing rope 15 to fix the automotive exterior part 1 against the rear limit post 26 (wherein, one end of the fixing rope 15 is pulled by the hook 16 to hold the automotive exterior part 1, and the other end of the fixing rope 15 is connected to the vertical wall panel 14 by the eye bolt 30); fix one end of the traction rope 8 to the glued joint body 2;

[0041] (3) Test: The operator turns the operating handwheel 21, which drives the lead screw 20 to rotate, thereby driving the crossbeam 7 to move longitudinally, so that the traction rope 8 pulls the glued joint 2; during the pulling process, the operator observes the pulling force data on the pulling force display device 24 at any time, and stops turning the handwheel when the specified pulling force is reached; then observe the bonding condition between the automotive exterior part 1 and the glued joint 2, and make a corresponding evaluation.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A universal testing apparatus for testing the adhesive strength of automotive exterior parts, characterized in that, The device includes a horizontally arranged test bench, a tension assembly, a positioning assembly, and an auxiliary fixing assembly arranged at intervals on the test bench in a front-to-back direction. The tension assembly includes a crossbeam arranged in a left-to-right direction and movable in a front-to-back direction on the test bench, a traction rope connecting the crossbeam and the glued joint of the automotive exterior part, and a tension sensor connected in series with the traction rope. The positioning assembly includes a tooling base plate on the test bench, a limiting post erected on the tooling base plate to limit the movement space of the automotive exterior part and the glued joint, and a pair of positioning support rails arranged in a front-to-back direction on the tooling base plate and positioned on the left and right sides of the limiting post to position and support the lower edge of the automotive exterior part or the glued joint. The auxiliary fixing assembly includes a vertical wall panel erected on the test bench by a bracket, a pair of fixing ropes on the vertical wall panel, and a hook on the fixing rope for hooking the automotive exterior part.

2. The universal testing apparatus for testing the adhesive strength of automotive exterior parts according to claim 1, characterized in that, The tensile assembly also includes a pair of longitudinal guide rails spaced apart on the test bench, and the crossbeam is movable along the longitudinal guide rails in the front-back direction.

3. The universal testing apparatus for testing the adhesive strength of automotive exterior parts according to claim 2, characterized in that, The tensile assembly also includes a traction seat located at the front end of the test bench, a lead screw connecting nut on the crossbeam, a lead screw rotatably connected to the lead screw connecting nut on the traction seat, and an operating handwheel for driving the lead screw to rotate on the lead screw.

4. A universal testing apparatus for testing the adhesive strength of automotive exterior parts according to claim 2, characterized in that, The tensioning assembly also includes a pair of transverse guide rails on the crossbeam, a tension seat that is movable in the left and right direction on the pair of transverse guide rails, and one end of the traction rope is connected to the tension seat.

5. A universal testing apparatus for testing the adhesive strength of automotive exterior parts according to claim 4, characterized in that, The tension assembly also includes a tension display device disposed on the tension seat and electrically connected to the tension sensor.

6. A universal testing apparatus for testing the adhesive strength of automotive exterior parts according to claim 1, characterized in that, The positioning assembly includes front and rear limiting posts on the tooling base plate.

7. A universal testing apparatus for testing the adhesive strength of automotive exterior parts according to claim 1, characterized in that, The positioning component also includes a pair of transverse slide rails disposed on the test bench, and the tooling base plate is movable on the pair of transverse slide rails in the left and right direction.

8. A universal testing apparatus for testing the adhesive strength of automotive exterior parts according to claim 7, characterized in that, The number of positioning components is two sets, which are arranged at intervals on the left and right sides of the test bench.

9. A universal testing apparatus for testing the adhesive strength of automotive exterior parts according to claim 7, characterized in that, The positioning component also includes a longitudinal positioning groove provided on the tooling base plate, and the lower end of the limiting post is movably disposed on the longitudinal positioning groove on the tooling base plate and fixed by fastening screws.

10. A universal testing apparatus for testing the adhesive strength of automotive exterior parts according to claim 1, characterized in that, The auxiliary fixing component also includes threaded holes densely arranged on the vertical wall panel. One end of the fixing rope connected to the vertical wall panel is provided with a lifting eye screw, and the lifting eye screw is threadedly connected to the threaded holes on the vertical wall panel.

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