Impact resistance testing device for automobile plastic parts

Abstract

The utility model relates to the field of automobile part testing, and discloses an automobile plastic part shock resistance testing device which is characterized in that guide rods are vertically arranged in the middles of the inward sides of two side frames, a lifting plate is arranged between the two guide rods in an up-and-down sliding mode, the lower end of the lifting plate is connected with a mounting plate in an adsorption mode, and the mounting plate is provided with a clamping groove. An impact head is installed at the center of the lower portion of the installation plate through screws, a driving motor is installed on the left side of the upper portion of the base, a winding wheel is installed on an output shaft of the driving motor, a steel wire rope is wound around the winding wheel, and the steel wire rope sequentially penetrates through a plurality of guide pulleys to be connected with a lifting plate. The mounting plate and the lifting plate are connected through the electromagnet, the mounting plate is separated from the lifting plate during testing, the mounting plate and the impact head fall downwards, the overall frictional resistance is reduced, the testing precision is improved, and the safety is also improved due to the fact that the lifting plate and the mounting plate are connected or separated through remote operation.

Description

Technical Field

[0001] The utility model relates to the field of automotive parts testing, in particular to an impact resistance test device for automotive plastic parts. Background Art

[0002] Evaluating the impact resistance of plastic material parts installed on an automobile is an important test method for non-metallic parts. The parts are impacted by the free fall of a hammer, and the parts after impact are inspected and evaluated to assess the quality of automotive rubber and plastic parts.

[0003] In the Chinese utility model patent with the publication number CN219455803U, a new material impact resistance testing machine is disclosed, which includes a clamping mechanism, an impact rod mechanism, a test piece support mechanism, and a frame for fixing the whole testing machine. The clamping mechanism includes a support plate, a lower clamping plate, an upper clamping plate, a threaded rod, and a threaded rotation handle. The fixed end of the threaded rotation handle is connected to the frame, the threaded rod is rotatably connected to the threaded rotation handle, the upper clamping plate is fixed at one end of the threaded rod, one end of the support plate is connected to the frame, and the other end is connected to the lower clamping plate. The lower clamping plate is arranged opposite to the upper clamping plate.

[0004] In the above structure, after manually moving the height of the support beam up and down and then locking it with a lock nut, the overall height of the support beam is adjusted, thereby changing the height of the impact head. Then, manually unlock the spring clip to make the impact head fall for impact testing. During operation, the operator needs to repeatedly lift the impact hammer, making the operation relatively complex. Moreover, when releasing, the operator stands beside, and the fragments generated during fragmentation flying around will also pose a certain threat to the operator. For this reason, we have designed an impact resistance test device for automotive plastic parts. Summary of the Utility Model

[0005] To solve the technical problems of relatively complex operation, and when releasing, the operator stands beside, and the fragments generated during fragmentation flying around will also pose a certain threat to the operator, the utility model provides an impact resistance test device for automotive plastic parts.

[0006] The utility model is realized by the following technical solutions: An impact resistance test device for automotive plastic parts, including a base. On the upper surface of the base, two side frames are symmetrically arranged on the left and right sides. Vertically arranged guide rods are provided at the middle of the inner sides of the two side frames facing each other. A lifting plate is slidably arranged up and down between the two guide rods. The lower end of the lifting plate is adhesively connected to a mounting plate. An impact head is screw-mounted at the center below the mounting plate.

[0007] A top frame is provided between the tops of the two side frames. A guiding pulley is installed at the middle and the left side of the top frame through brackets. In addition, a guiding pulley is also provided above the left side of the base. A driving motor is installed above the left side of the base. A winding wheel is installed on the output shaft of the driving motor. A steel wire rope is wound around the winding wheel. The steel wire rope sequentially passes through a plurality of guiding pulleys and is connected to the lifting plate.

[0008] As a further improvement of the above solution, a hanging ring is provided at the center of the top of the lifting plate. The tail end of the steel wire rope is bundled and connected to the hanging ring. Moreover, the tail of the steel wire rope is perpendicular to the lifting plate. The lifting plate slides up and down along two guiding rods. The setting of the hanging ring facilitates the connection and disassembly of the steel wire rope. And it is vertically connected to the center of the lifting plate, making the overall tension received by the lifting plate vertically upward, and it is more stable during the up and down movement.

[0009] As a further improvement of the above solution, an electromagnet is installed at each of the four corners of the lower surface of the lifting plate. And the four electromagnets are controlled by an external power supply. The electromagnet can make the lower mounting plate adsorbed below the lifting plate, and then can move up together with the lifting plate, facilitating the mounting plate to be at the required height.

[0010] As a further improvement of the above solution, an adsorption block is fixed at each of the four corners of the upper surface of the mounting plate. The position of the adsorption block is correspondingly arranged outside the electromagnet. The adsorption block is adsorbed and connected to the electromagnet. The adsorption block is made of a metal material. The lifting plate makes the mounting plate and the lower impact head rise to the specified height through the electromagnet and the adsorption block. Then the electromagnet is powered off to make the impact head and the mounting plate fall downward, so as to perform an impact test on the workpiece below.

[0011] As a further improvement of the above solution, two guiding tracks are symmetrically arranged on the front and back surfaces of the guiding rod;

[0012] Two groups of second guiding wheels are symmetrically arranged on both the left and right sides of the lifting plate. Two groups of first guiding wheels are symmetrically arranged on both the left and right sides of the mounting plate. The first guiding wheels and the second guiding wheels are in rolling contact with the guiding tracks, which can guide the lifting of the lifting plate and the mounting plate, making them move along the specified path. And the design of the first guiding wheels also reduces the resistance between the mounting plate and the guiding rod, facilitating the falling of the mounting plate and improving the accuracy.

[0013] As a further improvement of the above solution, both the lifting plate and the mounting plate are made of a carbon fiber material or a plastic material, reducing their weights and facilitating their rising. And during the impact, the main source of force depends on the weight of the impact head, and the weight of the impact head can be changed accordingly according to actual needs.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. By connecting the lifting plate with the steel wire rope, and connecting the mounting plate and the impact head below the lifting plate, and cooperating with the provided driving motor, the impact head can move up and down, so that it can be at the required height, and the position of the height is accurate, improving the test accuracy;

[0016] 2. By arranging an electromagnet below the lifting plate, and connecting the mounting plate and the lifting plate through the electromagnet, during the test, the mounting plate is separated from the lifting plate, and the mounting plate and the impact head fall downward, reducing the overall frictional resistance, improving the test accuracy, and the remote operation connection or disconnection between the lifting plate and the mounting plate also improves the safety;

[0017] 3. By arranging two sets of guide wheels one and two at the left end and the right end of the lifting plate and the mounting plate, they can guide the up and down movement of the lifting plate and the mounting plate, and also reduce the resistance when the mounting plate falls, making its operation more stable, improving the accuracy, and it is easy to disassemble, and then it is convenient to quickly disassemble the mounting plate and the lifting plate for subsequent replacement and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the overall structural schematic diagram of a device for testing the impact resistance performance of automotive plastic parts provided by the present utility model;

[0019] Figure 2 is Figure 1 the enlarged structural schematic diagram at A in;

[0020] Figure 3 is Figure 1 the front view of;

[0021] Figure 4 is Figure 1 the isometric view of;

[0022] Figure 5 is Figure 4 the enlarged structural schematic diagram at B in.

[0023] MAIN SYMBOL DESCRIPTION:

[0024] 1. Base; 2. Side frame; 21. Top frame; 3. Guide rod; 31. Guide track; 4. Mounting plate; 41. Guide wheel one; 42. Adsorption block; 5. Lifting plate; 51. Guide wheel two; 52. Electromagnet; 6. Guide pulley; 7. Steel wire rope; 8. Driving motor; 81. Winding wheel; 9. Impact head. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, in combination with the accompanying drawings and specific embodiments, the present utility model will be further described. It should be noted that, on the premise of no conflict, the following-described embodiments or technical features can be arbitrarily combined to form new embodiments.

[0026] Embodiment:

[0027] Please refer to Figures 1-5 A device for testing the impact resistance of an automotive plastic part in this embodiment includes a base 1. On the upper surface of the base 1, two side frames 2 are symmetrically arranged on the left and right sides. At the middle of the inner side of the two side frames 2, guide rods 3 are vertically arranged. Between the two guide rods 3, a lifting plate 5 is slidably arranged up and down. At the lower end of the lifting plate 5, an installation plate 4 is adsorbed and connected. At the center of the lower part of the installation plate 4, an impact head 9 is installed by screws;

[0028] Between the tops of the two side frames 2, a top frame 21 is arranged. At the middle and the left side of the top frame 21, guide pulleys 6 are installed through brackets. And on the left side above the base 1, a guide pulley 6 is also arranged. On the left side above the base 1, a driving motor 8 is installed. On the output shaft of the driving motor 8, a winding wheel 81 is installed. A steel wire rope 7 is wound around the winding wheel 81. The steel wire rope 7 passes through a plurality of guide pulleys 6 in sequence and is connected to the lifting plate 5.

[0029] At the center of the top of the lifting plate 5, a hanging ring is arranged. The tail end of the steel wire rope 7 is tied and connected to the hanging ring. And the tail of the steel wire rope 7 is vertically arranged with the lifting plate 5. The lifting plate 5 slides up and down along the two guide rods 3. The setting of the hanging ring facilitates the connection and disassembly of the steel wire rope 7. And it is vertically connected to the center of the lifting plate 5, making the overall pulling force received by the lifting plate 5 vertically upward and more stable during the up and down movement.

[0030] At the four corners of the lower surface of the lifting plate 5, an electromagnet 52 is installed respectively. And the four electromagnets 52 are controlled by an external power supply. The electromagnet 52 can make the lower installation plate 4 adsorbed under the lifting plate 5, and then can move up together with the lifting plate 5, facilitating the installation plate 4 to be at the required height.

[0031] At the four corners of the upper surface of the installation plate 4, an adsorption block 42 is fixed respectively. The position of the adsorption block 42 is correspondingly arranged outside the electromagnet 52. The adsorption block 42 is adsorbed and connected to the electromagnet 52. The adsorption block 42 is made of a metal material. The lifting plate 5 makes the installation plate 4 and the lower impact head 9 rise to the specified height through the electromagnet 52 and the adsorption block 42. Then the electromagnet 52 is powered off to make the impact head 9 and the installation plate 4 fall downward, so as to perform an impact test on the workpiece below.

[0032] On the front and back surfaces of the guide rod 3, two guide rails 31 are symmetrically arranged;

[0033] On both the left and right sides of the lifting plate 5, two sets of second guide wheels 51 are symmetrically arranged. On both the left and right sides of the mounting plate 4, two sets of first guide wheels 41 are symmetrically arranged. The first guide wheels 41 and the second guide wheels 51 are in rolling contact with the guide track 31, which can guide the lifting of the lifting plate 5 and the mounting plate 4, enabling them to move along the specified path. Moreover, the design of the first guide wheels 41 also reduces the resistance between the mounting plate 4 and the guide rod 3, facilitating the downward fall of the mounting plate 4 and improving the accuracy.

[0034] Both the lifting plate 5 and the mounting plate 4 are made of a carbon fiber material or a plastic material, reducing their weight and facilitating their upward movement. During impact, the main source of impact depends on the weight of the impact head 9, and the weight of the impact head 9 can be changed accordingly according to actual needs.

[0035] In the embodiment of the present application, the implementation principle of a test device for the impact resistance of automotive plastic parts is as follows: During actual use, the part is placed at the center above the base 1 through a fixture or other corresponding bracket, such that the part is directly below the impact head 9. Then, the driving motor 8 rotates forward or backward, causing the lifting plate 5 to move upward or downward, so that the impact head 9 is at the required test height. After that, the power supply of the electromagnet 52 can be disconnected. After the power supply of the electromagnet 52 is disconnected, the adsorption force between the lifting plate 5 and the mounting plate 4 will disappear. At this time, the mounting plate 4 and the impact head 9 will fall downward under the action of their own gravity, thereby being able to cause a certain impact on the part below, facilitating the impact resistance performance test on it.

[0036] Then, the driving motor 8 rotates in the reverse direction, and the lifting plate 5 moves downward until the electromagnet 52 below the lifting plate 5 contacts the adsorption block 42 on the mounting plate 4. Connecting the power supply of the electromagnet 52 can connect the lifting plate 5 and the mounting plate 4. Then, the driving motor 8 uses the steel wire rope 7 to move the lifting plate 5 upward again, and the mounting plate 4 and the impact head 9 move upward together. At this time, the part can be removed.

[0037] By connecting the lifting plate 5 with the steel wire rope 7, and connecting the mounting plate 4 and the impact head 9 below the lifting plate 5, and cooperating with the provided driving motor 8, the impact head 9 can move up and down, enabling it to be at the required height, and the position of the height is accurate, improving the test accuracy.

[0038] By arranging the electromagnet 52 below the lifting plate 5, the mounting plate 4 is connected to the lifting plate 5 through the electromagnet 52. During the test, the mounting plate 4 is separated from the lifting plate 5, and the mounting plate 4 and the impact head 9 fall downward, reducing the overall frictional resistance, improving the test accuracy, and the remote operation connection or disconnection between the lifting plate 5 and the mounting plate 4 also improves the safety.

[0039] By arranging two groups of first guide wheels 41 and second guide wheels 51 at the left end and the right end of the lifting plate 5 and the mounting plate 4, they can guide the up and down movement of the lifting plate 5 and the mounting plate 4, and also reduce the resistance of the mounting plate 4 when it falls, making its operation more stable, improving the accuracy, and being easy to disassemble. Furthermore, it is convenient to quickly disassemble the mounting plate 4 and the lifting plate 5 for subsequent replacement and maintenance.

[0040] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. An impact resistance test device for automotive plastic parts, including a base (1), characterized in that, On the upper surface of the base (1), two side frames (2) are symmetrically arranged on the left and right sides. In the middle of the inner sides of the two side frames (2), guide rods (3) are vertically arranged. An elevator plate (5) is slidably arranged up and down between the two guide rods (3). The lower end of the elevator plate (5) is adhesively connected with a mounting plate (4). A punch head (9) is screwed to the center of the lower part of the mounting plate (4). A top frame (21) is arranged between the tops of the two side frames (2). Guide pulleys (6) are installed through brackets at the middle and the left side of the top frame (21). A guide pulley (6) is also arranged on the left side above the base (1). A driving motor (8) is installed on the left side above the base (1). A winding wheel (81) is installed on the output shaft of the driving motor (8). A steel wire rope (7) is wound around the winding wheel (81). The steel wire rope (7) passes through a plurality of guide pulleys (6) in sequence and is connected with the elevator plate (5).

2. The impact resistance test device for automotive plastic parts according to claim 1, wherein A hanging ring is arranged at the center of the top of the elevator plate (5). The tail end of the steel wire rope (7) is tied and connected with the hanging ring, and the tail of the steel wire rope (7) is vertically arranged with the elevator plate (5).

3. The impact resistance test device for automotive plastic parts according to claim 1, characterized in that, Four electromagnets (52) are respectively installed at the four corners of the lower surface of the elevator plate (5), and the four electromagnets (52) are controlled by an external power supply.

4. The impact resistance test device for automotive plastic parts according to claim 3, characterized in that, Four adsorption blocks (42) are respectively fixed at the four corners of the upper surface of the mounting plate (4). The positions of the adsorption blocks (42) are correspondingly arranged outside the electromagnets (52). The adsorption blocks (42) are adsorbed and connected with the electromagnets (52). The adsorption blocks (42) are made of a metal material.

5. The impact resistance test device for automotive plastic parts according to claim 1, characterized in that, Two guide rails (31) are symmetrically arranged on the front and rear surfaces of the guide rod (3). Two groups of second guide wheels (51) are symmetrically arranged on the left and right sides of the elevator plate (5). Two groups of first guide wheels (41) are symmetrically arranged on the left and right sides of the mounting plate (4). The first guide wheels (41) and the second guide wheels (51) are in rolling contact with the guide rails (31).

6. The impact resistance test device for automotive plastic parts according to claim 1, characterized in that, Both the elevator plate (5) and the mounting plate (4) are made of a carbon fiber material or a plastic material.

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