Tool clamp for drop test

Abstract

The utility model discloses a work fixture for a drop test, which relates to the technical field of drop test fixtures and comprises a base and a lifting mechanism, an outer frame is fixed above the base, an inner frame is sleeved inside the outer frame in a sliding manner, and the lifting mechanism is mounted in a built-in groove, close to the inner frame, of the outer frame. According to the tool clamp for the drop test, the positions of the first clamping plate and the second clamping plate are adjusted according to the irregular shapes of the two sides of a workpiece or an object, the first clamping plate or the second clamping plate is pushed towards one side through an electric telescopic rod, and meanwhile the first clamping plate or the second clamping plate can rotate around a rotating shaft; after the electric telescopic rod pushes the first clamping plate or the second clamping plate to a proper angle, the first clamping plate or the second clamping plate abuts against the two sides of a workpiece or an object, the concave-convex curved surface on one side of the first clamping plate or the second clamping plate improves friction force, clamping stability is improved, and practicability or testing accuracy of the tool clamp for the drop test is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of drop test fixtures, in particular to a tooling fixture for drop testing. Background Art

[0002] Drop test is a test method used to evaluate the impact resistance of products. It is usually used to measure the product's ability to withstand accidental impact or fall during transportation, handling, and use. This test can help manufacturers and producers determine whether the product can withstand various unexpected situations in actual use without being damaged. During the drop test, a fixture is used to clamp the product to simulate the product falling from different heights;

[0003] However, the existing drop test fixtures have the following disadvantages: the clamping plates of most drop test fixtures cannot be adjusted according to the shape of the workpiece or object. Some workpieces or objects may be of irregular shapes. Ordinary clamping plates cannot stably clamp the workpiece or object, which may easily cause the workpiece or object to slip accidentally, thereby reducing the accuracy of the drop test. Therefore, the existing drop test fixtures need to be improved. Summary of the invention

[0004] The purpose of the utility model is to provide a fixture for drop testing, so as to solve the problem raised in the above-mentioned background technology that the clamping plates of the fixture for drop testing currently on the market cannot be adjusted according to the shape of the workpiece or object, some workpieces or objects may be of irregular shapes, and ordinary clamping plates cannot stably clamp the workpieces or objects, which will reduce the accuracy of the drop test.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tooling fixture for drop testing, comprising a base and a lifting mechanism, wherein an outer frame is fixed on the top of the base, an inner frame is slidably sleeved inside the outer frame, the lifting mechanism is installed in a built-in groove of the outer frame close to the inner frame, and one side of the lifting mechanism is connected to the inner frame, and the other side of the lifting mechanism is located in the built-in groove of the base.

[0006] Preferably, one side of the inner frame is connected to an adjusting mechanism, one side of the adjusting mechanism is connected to motor No. 2, one end of the adjusting mechanism away from motor No. 2 is connected to a U-shaped frame, cylinders are installed on both sides of the U-shaped frame, one side of the cylinder is connected to a movable plate, and one side of the movable plate is installed with a clamping mechanism.

[0007] Preferably, the lifting mechanism includes a screw and a No. 1 motor, the screw is installed in the built-in groove of the outer frame through a bearing, and the screw and the inner frame are threadedly connected.

[0008] Preferably, both ends of the inner frame are located in the inner wall slide groove of the outer frame, one end of the screw is connected to motor No. 1, and motor No. 1 is located in the built-in groove of the base.

[0009] Preferably, the adjustment mechanism includes a screw rod, a movable frame, a gear and a connecting rod, a screw rod is installed in a reserved groove at one end of the inner frame through a bearing, the movable frame is threadedly sleeved on the outer side of the screw rod, and one end of the screw rod is connected to the No. 2 motor.

[0010] Preferably, a connecting rod is installed on one side of the inner frame through a bearing, and one end of the connecting rod is connected to the U-shaped frame, a gear is fixedly sleeved on the outer side of the connecting rod, and one side of the movable frame is meshed with the gear.

[0011] Preferably, the clamping mechanism includes an electric telescopic rod, a first clamping plate, a rotating shaft, a support plate and a second clamping plate, a support plate is installed in the middle of the reserved groove of the movable plate, and a rotating shaft is fixed to one end of the support plate.

[0012] Preferably, the outer side of the rotating shaft is movably sleeved with a first clamping plate and a second clamping plate, both ends of the movable plate are connected to an electric telescopic rod through a movable shaft, and one end of the electric telescopic rod is connected to the first clamping plate and the second clamping plate through a movable shaft.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. A clamping mechanism is provided to adjust the positions of the No. 1 and No. 2 splints according to the irregular shapes on both sides of the workpiece or object. The No. 1 or No. 2 splint is pushed to one side by an electric telescopic rod, and the No. 1 or No. 2 splint rotates around the rotation axis. After the electric telescopic rod pushes the No. 1 or No. 2 splint to a suitable angle, the No. 1 or No. 2 splint is pressed against both sides of the workpiece or object, and the concave and convex surface on one side of the No. 1 or No. 2 splint increases the friction, improves the clamping stability, and improves the practicality or test accuracy of the tooling fixture for the drop test.

[0015] 2. An adjustment mechanism is provided. When the clamping angle of the workpiece or object is required, the No. 2 motor can be started to drive the screw to rotate, and then the mobile frame moves to one side on the screw. At the same time, the rack under the mobile frame engages with the gear and drives the gear to rotate. Then the gear causes the connecting rod to drive the U-shaped frame to rotate. The angle of the fixture can be quickly adjusted, which is convenient for drop testing of different aspects of the workpiece or object, and improves the convenience of the fixture for drop testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2This is a schematic diagram of the main cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the side cross-sectional structure of the adjustment mechanism of the utility model;

[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model from top view;

[0020] Figure 5 This is a schematic diagram of the cross-sectional structure of the clamping mechanism of the utility model from top view;

[0021] Figure 6 This is a schematic diagram of the three-dimensional structure of the first clamping plate of the utility model.

[0022] In the figure: 1. base; 2. outer frame; 3. inner frame; 4. lifting mechanism; 401. screw; 402. No. 1 motor; 5. U-shaped frame; 6. cylinder; 7. moving plate; 8. adjusting mechanism; 801. screw; 802. moving frame; 803. gear; 804. connecting rod; 9. clamping mechanism; 901. electric telescopic rod; 902. No. 1 clamping plate; 903. rotating shaft; 904. supporting plate; 905. No. 2 clamping plate; 10. No. 2 motor. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-5 The utility model provides a technical solution: a fixture for drop test, comprising a base 1 and a lifting mechanism 4, an outer frame 2 is fixed on the top of the base 1, an inner frame 3 is slidably sleeved inside the outer frame 2, the lifting mechanism 4 is installed in a built-in groove of the outer frame 2 close to the inner frame 3, and one side of the lifting mechanism 4 is connected to the inner frame 3, the other side of the lifting mechanism 4 is located in the built-in groove of the base 1, an adjusting mechanism 8 is connected to one side of the inner frame 3, a No. 2 motor 10 is connected to one side of the adjusting mechanism 8, a U-shaped frame 5 is connected to one end of the adjusting mechanism 8 away from the No. 2 motor 10, cylinders 6 are installed on both sides of the U-shaped frame 5, a moving plate 7 is connected to one side of the cylinder 6, and a clamping mechanism 9 is installed on one side of the moving plate 7.

[0025] according to Figure 2As shown, the lifting mechanism 4 includes a screw 401 and a motor 402. The screw 401 is installed in the built-in groove of the outer frame 2 through a bearing. The screw 401 and the inner frame 3 are threadedly connected. The two ends of the inner frame 3 are located in the inner wall slide groove of the outer frame 2. One end of the screw 401 is connected to the motor 402, and the motor 402 is located in the built-in groove of the base 1.

[0026] In specific implementation, in the drop test, the workpiece or object needs to be raised to a certain height for the drop test. The No. 1 motor 402 can be started to drive the screw 401 to rotate, and then the inner frame 3 moves upward on the screw 401. At the same time, the two sides of the inner frame 3 slide upward in the reserved grooves on the inner wall of the outer frame 2, so that the workpiece or object can be quickly raised.

[0027] according to Figure 1-4 As shown, the adjustment mechanism 8 includes a screw rod 801, a movable frame 802, a gear 803 and a connecting rod 804. The screw rod 801 is installed in the reserved groove at one end of the inner frame 3 through a bearing, and the movable frame 802 is threadedly sleeved on the outer side of the screw rod 801. One end of the screw rod 801 is connected to the second motor 10. A connecting rod 804 is installed on one side of the inner frame 3 through a bearing, and one end of the connecting rod 804 is connected to the U-shaped frame 5. The outer side of the connecting rod 804 is fixedly sleeved with a gear 803, and one side of the movable frame 802 is meshed with the gear 803.

[0028] In specific implementation, since the clamping angles of some drop test fixtures are not easy to adjust, when drop tests are to be performed on different surfaces of a workpiece or object, the staff is required to manually adjust the workpiece and then clamp it, which is not very convenient. When the clamping angle of the workpiece or object is required, the No. 2 motor 10 can be started to drive the screw rod 801 to rotate, and then the moving frame 802 moves to one side on the screw rod 801. At the same time, the rack under the moving frame 802 engages with the gear 803 and drives the gear 803 to rotate. Then the gear 803 causes the connecting rod 804 to drive the U-shaped frame 5 to rotate. The angle of the fixture can be quickly adjusted, which is convenient for drop tests on different aspects of the workpiece or object, thereby improving the convenience of the drop test fixture.

[0029] according to Figure 4-6As shown, the clamping mechanism 9 includes an electric telescopic rod 901, a No. 1 clamping plate 902, a rotating shaft 903, a support plate 904 and a No. 2 clamping plate 905. The support plate 904 is installed in the middle of the reserved groove of the movable plate 7, and a rotating shaft 903 is fixed to one end of the support plate 904. The outer side of the rotating shaft 903 is movably sleeved with the No. 1 clamping plate 902 and the No. 2 clamping plate 905. The two ends of the movable plate 7 are connected with the electric telescopic rod 901 through a movable shaft, and one end of the electric telescopic rod 901 is connected with the No. 1 clamping plate 902 and the No. 2 clamping plate 905 through a movable shaft. One side of the No. 1 clamping plate 902 and the No. 2 clamping plate 905 are provided with concave and convex surfaces.

[0030] In specific implementation, most workpieces or objects may be of irregular shapes, and ordinary clamping plates cannot stably clamp the workpieces or objects, which may easily cause the workpieces or objects to accidentally slip, reducing the accuracy of the drop test. When clamping the workpieces or objects, the cylinder 6 can be started to push the moving plate 7 to one side, so that the moving plate 7 drives the first clamping plate 902 and the second clamping plate 905 to clamp on both sides of the workpiece or object. Then, the positions of the first clamping plate 902 and the second clamping plate 905 can be adjusted according to the irregular shapes of the two sides of the workpiece or object. The telescopic rod 901 pushes the No. 1 splint 902 or the No. 2 splint 905 to one side, and at the same time, the No. 1 splint 902 or the No. 2 splint 905 will rotate around the rotating axis 903. After the electric telescopic rod 901 pushes the No. 1 splint 902 or the No. 2 splint 905 to a suitable angle, the No. 1 splint 902 or the No. 2 splint 905 is pressed against both sides of the workpiece or object, and the concave and convex surface on one side of the No. 1 splint 902 or the No. 2 splint 905 increases the friction, improves the clamping stability, and improves the practicality or test accuracy of the tooling fixture for the drop test.

[0031] Working principle: When using this kind of drop test fixture, first, the workpiece or object is stably clamped by the clamping mechanism 9, and then the height of the inner frame 3 is adjusted according to the drop test height, and the inner frame 3 is raised to a suitable height by the lifting mechanism 4, and then the drop test is performed, and the clamping of the workpiece or object is canceled by the clamping mechanism 9, so that the workpiece or object falls from a height to detect the anti-fall performance of the workpiece or object. During the detection process, the clamping angle can be adjusted at any time, and the inclination angle of the U-shaped frame 5 can be quickly adjusted by the adjustment mechanism 8, so as to facilitate the drop test of the workpiece or object in different aspects, thereby improving the convenience or test accuracy of the drop test fixture. The contents not described in detail in this description belong to the prior art known to professional and technical personnel in this field.

[0032] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fixture for drop testing, comprising a base (1) and a lifting mechanism (4), characterized in that: An outer frame (2) is fixed above the base (1), an inner frame (3) is slidably sleeved inside the outer frame (2), the lifting mechanism (4) is installed in a built-in groove of the outer frame (2) close to the inner frame (3), one side of the lifting mechanism (4) is connected to the inner frame (3), and the other side of the lifting mechanism (4) is located in the built-in groove of the base (1).

2. A drop test fixture according to claim 1, characterized in that: One side of the inner frame (3) is connected to an adjusting mechanism (8), one side of the adjusting mechanism (8) is connected to a No. 2 motor (10), one end of the adjusting mechanism (8) away from the No. 2 motor (10) is connected to a U-shaped frame (5), cylinders (6) are installed on both sides of the U-shaped frame (5), one side of the cylinder (6) is connected to a moving plate (7), and one side of the moving plate (7) is installed with a clamping mechanism (9).

3. A drop test fixture according to claim 1, characterized in that: The lifting mechanism (4) comprises a screw (401) and a first motor (402); the screw (401) is installed in the built-in groove of the outer frame (2) via a bearing; the screw (401) and the inner frame (3) are threadedly sleeved.

4. A drop test fixture according to claim 3, characterized in that: Both ends of the inner frame (3) are located in the inner wall sliding grooves of the outer frame (2), one end of the screw rod (401) is connected to a No. 1 motor (402), and the No. 1 motor (402) is located in the built-in groove of the base (1).

5. A drop test fixture according to claim 2, characterized in that: The adjusting mechanism (8) comprises a screw rod (801), a movable frame (802), a gear (803) and a connecting rod (804); a screw rod (801) is installed in a reserved groove at one end of the inner frame (3) via a bearing; the movable frame (802) is threadedly sleeved on the outer side of the screw rod (801); and one end of the screw rod (801) is connected to the second motor (10).

6. A drop test fixture according to claim 5, characterized in that: A connecting rod (804) is installed on one side of the inner frame (3) via a bearing, and one end of the connecting rod (804) is connected to the U-shaped frame (5). A gear (803) is fixedly sleeved on the outside of the connecting rod (804), and one side of the movable frame (802) is meshed with the gear (803).

7. A drop test fixture according to claim 2, characterized in that: The clamping mechanism (9) comprises an electric telescopic rod (901), a first clamping plate (902), a rotating shaft (903), a support plate (904) and a second clamping plate (905); the support plate (904) is installed in the middle of the reserved groove of the movable plate (7); and the rotating shaft (903) is fixed to one end of the support plate (904).

8. A drop test fixture according to claim 7, characterized in that: The outer side of the rotating shaft (903) is movably sleeved with a first clamping plate (902) and a second clamping plate (905); both ends of the movable plate (7) are connected to an electric telescopic rod (901) via a movable shaft; one end of the electric telescopic rod (901) is connected to the first clamping plate (902) and the second clamping plate (905) via a movable shaft.

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