Impact testing machine for testing high polymer material

Abstract

The utility model discloses an impact testing machine for testing high polymer materials, which relates to the technical field of impact tests and comprises a first fixing frame and a rotating component. The upper end of the front side of the first fixing frame is provided with an impact assembly, and the front side of the first fixing frame is provided with a fixing assembly; the rotating assembly comprises a second motor, a rotating shaft, an electric brush slip ring and a connecting frame, the second motor is installed at the lower end of the rear side of the first fixing frame, the rotating shaft is fixed to an output shaft of the second motor, the electric brush slip ring is installed on the circumferential face of the rotating shaft, and the connecting frame is fixed to the front end of the rotating shaft; four corresponding centering assemblies are installed in the connecting frame, a shifting assembly is installed on the front side of the connecting frame, the fixing assembly is connected with the centering assembly on the upper side, and the input end of a second motor and the input end of an electric brush sliding ring are electrically connected with the output end of an external PLC. Meanwhile, multiple tests can be carried out at the same time without repeated clamping, and the test efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of impact testing technology, specifically to an impact testing machine for testing polymer materials. Background Technology

[0002] In industrial applications, impact testing is commonly used to determine material toughness. A pendulum impacts the sample once, causing it to break along a notch. The absorbed energy is calculated using the difference in the pendulum's height upon re-arrival. Currently, pendulum impact testing machines are divided into two types: simply supported beam impact testing machines and cantilever beam impact testing machines. Both types require sample alignment before testing to ensure the sample is at the lowest point of the pendulum's swing trajectory, thus improving testing accuracy. Currently, both types of impact testing machines rely on manual alignment, which is difficult to operate, labor-intensive, inefficient, and lacks guaranteed accuracy, thus affecting the test precision. Furthermore, existing impact testing machines can only perform a single impact, requiring sample re-clamping and fixing before each test, severely impacting testing speed and data acquisition. Therefore, we propose an impact testing machine for polymer materials. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide an impact testing machine for polymer materials that can quickly center and perform multiple tests at the same time without repeated clamping, thereby improving testing efficiency and effectively solving the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an impact testing machine for polymer materials, comprising a first fixed frame and a rotating assembly;

[0005] First fixing frame: An impact component is installed at the upper front end, and a fixing component is installed at the front side of the first fixing frame;

[0006] Rotating assembly: includes a second motor, a rotating shaft, a brush slip ring, and a connecting frame. The second motor is installed at the lower rear end of the first fixed frame. The rotating shaft is fixed on the output shaft of the second motor. The brush slip ring is installed on the circumferential surface of the rotating shaft. The connecting frame is fixed at the front end of the rotating shaft. Four corresponding centering components are installed inside the connecting frame. A toggle component is installed on the front side of the connecting frame. The fixed component is connected to the upper centering component. The input ends of the second motor and the brush slip ring are electrically connected to the output end of an external PLC controller. The rotating assembly drives the four centering components to move.

[0007] Furthermore, the centering assembly includes a second fixing frame, a locking hole, a connecting ring, a placement groove, a toothed column, a fixing ring, and a clamping strip. Four corresponding second fixing frames are fixed inside the connecting frame. A locking hole is provided on the rear side of each of the second fixing frames. Two corresponding connecting rings are fixed to the sides of the four second fixing frames. Eight corresponding placement grooves are provided on the outer sides of the two connecting rings, with the four placement grooves on the front side corresponding to the four placement grooves on the rear side. Two corresponding mounting holes are provided on the rear side of each second fixing frame. Two meshing toothed columns are rotatably connected inside the two mounting holes. Two corresponding fixing rings are fixed to the surface of each toothed column. A clamping strip is fixed to the circumferential surface of each fixing ring. The centering assembly is used to center and fix the polymer material.

[0008] Furthermore, the actuating assembly includes a third motor, a first gear, and a second gear. The connecting frame has a mounting cavity in the middle, and the third motor is installed inside the mounting cavity. The first gear is fixed on the output shaft of the third motor, and the second gear is provided on the outside of the second fixing frame. The second gear is fixed on the end face of the adjacent gear column. The first gear meshes with four second gears. The input end of the third motor is electrically connected to the output end of the brush slip ring. The actuating assembly drives the four gear columns connected to it to rotate.

[0009] Furthermore, the fixing assembly includes an electric telescopic rod and a clamp. An electric telescopic rod is installed on the front side of the first fixing frame, and a clamp is fixed on the telescopic arm of the electric telescopic rod. The clamp engages with the inside of the upper clamping hole. The input end of the electric telescopic rod is electrically connected to the output end of an external PLC controller. By setting the fixing assembly, the upper fixing frame is fixed, thereby fixing the connecting frame.

[0010] Furthermore, the impact assembly includes a first motor, a connector, an encoder, a connecting post, and a pendulum. The first motor is mounted on the rear side of the first mounting bracket, and a connector is fixed on the output shaft of the first motor. An encoder is connected to the front end of the connector, and a connecting post is connected to the front end of the encoder. A pendulum is fixed to the lower end of the circumferential surface of the connecting post, and the lower end of the pendulum is located between two placement slots on the upper side. The input end of the first motor is electrically connected to the output end of an external PLC controller, and the encoder is bidirectionally electrically connected to the external PLC controller. The impact assembly is used to conduct impact tests on polymer materials.

[0011] Furthermore, an infrared receiver is installed on the front side of the first fixing frame, and four corresponding infrared transmitters are installed on the rear end of the fixing ring. The four infrared transmitters correspond to the four placement slots on the rear side, and the infrared receiver corresponds to the infrared transmitter on the upper side. The input end of the infrared transmitter is electrically connected to the output end of the brush slip ring, and the infrared receiver is bidirectionally electrically connected to an external PLC controller. The fixing frame is matched by setting the infrared receiver and infrared transmitter.

[0012] Furthermore, a mounting slot is provided on the front side of the first fixing frame, and a display is installed inside the mounting slot. The input terminal of the display is electrically connected to the output terminal of an external PLC controller, and the impact test data is displayed by setting the display.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This impact testing machine for polymer materials has the following advantages:

[0014] By setting up an alignment component, the two ends of the polymer material to be impacted can be placed into the eight placement slots on the circumference of the two connecting rings. After placement, the third motor is started, causing the first gear to rotate. The rotation of the first gear drives the four second gears to rotate, which in turn drives the eight toothed columns to rotate. The rotation of the eight toothed columns moves all the clamping bars, thus centering and fixing the four polymer materials. Then, the impact component can be used to perform the impact test. After the impact test on the upper polymer material, the second motor is started, causing the connecting frame to rotate the untested polymer material to the top. Then, the impact component is restarted for use. In this way, multiple tests can be performed simultaneously without repeated clamping, improving testing efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0016] Figure 2 This is a right-side sectional view of the present invention;

[0017] Figure 3 This is an enlarged view of section A of this utility model;

[0018] Figure 4 This is a schematic diagram of the centering component structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the first gear of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the tooth column of this utility model.

[0021] In the diagram: 1 First fixing frame, 2 Impact assembly, 21 First motor, 22 Connector, 23 Encoder, 24 Connecting column, 25 Pendulum, 3 Rotating assembly, 31 Second motor, 32 Rotating shaft, 33 Brush slip ring, 34 Connecting frame, 4 Centering assembly, 41 Second fixing frame, 42 Card hole, 43 Connecting ring, 44 Placement slot, 45 Tooth column, 46 Fixing ring, 47 Clamping bar, 5 Actuating assembly, 51 Third motor, 52 First gear, 53 Second gear, 6 Fixing assembly, 61 Electric telescopic rod, 62 Card head, 7 Infrared receiver, 8 Infrared transmitter, 9 Display. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-6 This embodiment provides a technical solution: an impact testing machine for testing polymer materials, including a first fixed frame 1 and a rotating assembly 3;

[0024] First fixed frame 1: An impact assembly 2 is installed on the upper front end. A fixed assembly 6 is installed on the front side of the first fixed frame 1. The impact assembly 2 includes a first motor 21, a connector 22, an encoder 23, a connecting post 24, and a pendulum 25. The first motor 21 is installed on the rear side of the first fixed frame 1. A connector 22 is fixed on the output shaft of the first motor 21. An encoder 23 is connected to the front end of the connector 22. A connecting post 24 is connected to the front end of the encoder 23. A pendulum 25 is fixed to the lower end of the circumferential surface of the connecting post 24. The lower end of the pendulum 25 is located between the two placement slots 44 on the upper side. The first motor 21... The input terminal of 1 is electrically connected to the output terminal of an external PLC controller. The encoder 23 is bidirectionally electrically connected to the external PLC controller. The fixing component 6 includes an electric telescopic rod 61 and a clamp 62. The electric telescopic rod 61 is installed on the front side of the first fixing frame 1. The clamp 62 is fixed on the telescopic arm of the electric telescopic rod 61. The clamp 62 is engaged in the inside of the upper clamp hole 42. The input terminal of the electric telescopic rod 61 is electrically connected to the output terminal of an external PLC controller. The second fixing frame 41 on the upper side is fixed by setting the fixing component 6. The impact component 2 is used to conduct impact tests on polymer materials.

[0025] Rotating assembly 3 includes a second motor 31, a rotating shaft 32, a brush slip ring 33, and a connecting frame 34. The second motor 31 is mounted on the lower rear end of the first fixed frame 1. The rotating shaft 32 is fixed on the output shaft of the second motor 31. The brush slip ring 33 is mounted on the circumferential surface of the rotating shaft 32. The connecting frame 34 is fixed to the front end of the rotating shaft 32. Four corresponding centering components 4 are installed inside the connecting frame 34. A toggle component 5 is mounted on the front side of the connecting frame 34. The fixed component 6 is connected to the upper centering component 4. The second motor 31 and the brush slip ring 33... The input terminals of component 3 are electrically connected to the output terminals of an external PLC controller. The centering assembly 4 includes a second fixing bracket 41, a locking hole 42, a connecting ring 43, a placement slot 44, a toothed column 45, a fixing ring 46, and a clamping bar 47. Four corresponding second fixing brackets 41 are fixed inside the connecting bracket 34. The rear side of each second fixing bracket 41 has a locking hole 42. Two corresponding connecting rings 43 are fixed to the sides of the four second fixing brackets 41. Eight corresponding placement slots 44 are opened on the outside of the two connecting rings 43. The four placement slots 44 on the front side... Corresponding to the four placement slots 44 on the rear side, the second fixing bracket 41 has two corresponding mounting holes on its rear side. Two meshing gear pins 45 are rotatably connected inside the two mounting holes. Two corresponding fixing rings 46 are fixed to the surface of the gear pins 45. Clamping strips 47 are fixed to the circumferential surface of the fixing rings 46. The actuating assembly 5 includes a third motor 51, a first gear 52, and a second gear 53. A mounting cavity is provided in the middle of the connecting bracket 34. The third motor 51 is installed inside the mounting cavity, and a clamping strip 47 is fixed to the output shaft of the third motor 51. The first gear 52 and the second fixed frame 41 are provided with a second gear 53 on their exterior. The second gear 53 is fixed on the end face of the adjacent tooth column 45. The first gear 52 meshes with four second gears 53. The input end of the third motor 51 is electrically connected to the output end of the brush slip ring 33, thereby fixing the connecting frame 34. The four tooth columns 45 connected to it are rotated by setting the actuating component 5. The polymer material is centered and fixed by setting the centering component 4. The four centering components 4 are moved by setting the rotating component 3.

[0026] Wherein: an infrared receiver 7 is installed on the front side of the first fixed frame 1, and four corresponding infrared transmitters 8 are installed on the rear end of the fixed ring 46 on the rear side. The four infrared transmitters 8 correspond to the four placement slots 44 on the rear side respectively. The infrared receiver 7 corresponds to the infrared transmitter 8 on the upper side. The input end of the infrared transmitter 8 is electrically connected to the output end of the brush slip ring 33. The infrared receiver 7 is bidirectionally electrically connected to the external PLC controller. The second fixed frame 41 is matched by setting the infrared receiver 7 and the infrared transmitter 8.

[0027] The first fixing frame 1 has a mounting slot on its front side, and a display 9 is installed inside the mounting slot. The input terminal of the display 9 is electrically connected to the output terminal of an external PLC controller. The data of the impact test is displayed by setting the display 9.

[0028] The working principle of the impact testing machine for polymer materials provided by this utility model is as follows: During use, both ends of the polymer material to be impacted are placed into the eight placement slots 44 opened on the circumferential surface of the two connecting rings 43. After placement, the third motor 51 is started, causing the first gear 52 to rotate. The rotation of the first gear 52 drives the four second gears 53 to rotate, and the rotation of the second gears 53 drives the connected toothed column 45 to rotate, thus causing the toothed column 45 meshing with it to rotate. The rotation of the two toothed columns 45 drives the four clamping bars 47 on their circumferential surface to rotate, thereby centering and fixing the adjacent polymer material. The rotation of the four second gears 53 drives the eight toothed columns 45 to rotate, and the rotation of the eight toothed columns 45 drives all the clamping bars 47 to move, thereby centering and fixing the four polymer materials. Then, the first motor 21 is started... The moving connecting column 24 rotates, which drives the pendulum 25 to rotate upward. At this time, the encoder 23 will detect the rising angle of the pendulum 25. When it rises to the predetermined height, the external PLC controller automatically shuts off the first motor 21, allowing the pendulum 25 to fall freely and act on the surface of the polymer material. The rotation angle of the pendulum 25 when it rises after the impact is also detected by the encoder 23. By comparing the two detection values ​​of the encoder 23, the experimental data is obtained and displayed on the display screen 24. In this way, the impact test can be completed. After the impact test on the polymer material on the upper side, the second motor 31 is started to rotate the connecting frame 34 to rotate the untested polymer material to the upper side. Then the impact assembly is restarted for use. In this way, multiple tests can be performed at the same time without repeated clamping, which improves the test efficiency.

[0029] It is worth noting that the external PLC controller disclosed in the above embodiments is specifically a Siemens S7-200. The first motor 21, the second motor 31, the third motor 51, the infrared receiver 7, the infrared transmitter 8, the electric telescopic rod 61, and the encoder 23 can be freely configured according to the actual application scenario. The external PLC controller controls the operation of the first motor 21, the second motor 31, the third motor 51, the infrared transmitter 8, and the electric telescopic rod 61 using methods commonly used in the prior art.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An impact testing machine for testing polymer materials, characterized in that: It includes a first fixed frame (1) and a rotating assembly (3); First fixing frame (1): An impact component (2) is installed on the upper front side, and a fixing component (6) is installed on the front side of the first fixing frame (1). Rotating assembly (3): includes a second motor (31), a rotating shaft (32), a brush slip ring (33), and a connecting frame (34). The second motor (31) is installed at the lower rear end of the first fixed frame (1). The rotating shaft (32) is fixed on the output shaft of the second motor (31). The brush slip ring (33) is installed on the circumferential surface of the rotating shaft (32). The connecting frame (34) is fixed at the front end of the rotating shaft (32). Four corresponding centering components (4) are installed inside the connecting frame (34). A toggle component (5) is installed on the front side of the connecting frame (34). The fixed component (6) is connected to the centering component (4) on the upper side. The input ends of the second motor (31) and the brush slip ring (33) are electrically connected to the output end of the external PLC controller.

2. The impact testing machine for polymer materials according to claim 1, characterized in that: The centering component (4) includes a second fixing frame (41), a locking hole (42), a connecting ring (43), a placement groove (44), a toothed column (45), a fixing ring (46), and a clamping strip (47). The connecting frame (34) has four corresponding second fixing frames (41) fixed inside. The second fixing frame (41) has a locking hole (42) on its rear side. The four second fixing frames (41) have two corresponding connecting rings (43) fixed on their sides. The two connecting rings (43) have eight corresponding placement grooves (44) on their exterior. The four placement grooves (44) on the front side correspond to the four placement grooves (44) on the rear side. The second fixing frame (41) has two corresponding mounting holes on its rear side. The two mounting holes have two meshing toothed columns (45) rotatably connected inside. The toothed column (45) has two corresponding fixing rings (46) fixed on its surface. The clamping strip (47) is fixed on the circumferential surface of the fixing ring (46).

3. The impact testing machine for polymer materials according to claim 2, characterized in that: The actuation assembly (5) includes a third motor (51), a first gear (52), and a second gear (53). The connecting frame (34) has a mounting cavity in the middle. The third motor (51) is installed inside the mounting cavity. The first gear (52) is fixed on the output shaft of the third motor (51). The second gear (53) is provided on the outside of the second fixing frame (41). The second gear (53) is fixed on the end face of the adjacent gear column (45). The first gear (52) meshes with four second gears (53). The input end of the third motor (51) is electrically connected to the output end of the brush slip ring (33).

4. The impact testing machine for polymer materials according to claim 2, characterized in that: The fixing component (6) includes an electric telescopic rod (61) and a clamp (62). The electric telescopic rod (61) is installed on the front side of the first fixing frame (1). The clamp (62) is fixed on the telescopic arm of the electric telescopic rod (61). The clamp (62) is engaged in the inside of the upper clamp hole (42). The input end of the electric telescopic rod (61) is electrically connected to the output end of an external PLC controller.

5. The impact testing machine for polymer materials according to claim 2, characterized in that: The impact assembly (2) includes a first motor (21), a connector (22), an encoder (23), a connecting post (24), and a pendulum (25). The first motor (21) is mounted on the rear side of the first fixing frame (1). The connector (22) is fixed on the output shaft of the first motor (21). The encoder (23) is connected to the front end of the connector (22). The connecting post (24) is connected to the front end of the encoder (23). The pendulum (25) is fixed at the lower end of the circumferential surface of the connecting post (24). The lower end of the pendulum (25) is located between the two placement slots (44) on the upper side. The input end of the first motor (21) is electrically connected to the output end of an external PLC controller. The encoder (23) is bidirectionally electrically connected to the external PLC controller.

6. The impact testing machine for polymer materials according to claim 2, characterized in that: An infrared receiver (7) is installed on the front side of the first fixed frame (1), and four corresponding infrared transmitters (8) are installed at the rear end of the fixed ring (46) on the rear side. The four infrared transmitters (8) correspond to the four placement slots (44) on the rear side respectively. The infrared receiver (7) corresponds to the infrared transmitter (8) on the upper side. The input end of the infrared transmitter (8) is electrically connected to the output end of the brush slip ring (33). The infrared receiver (7) is bidirectionally electrically connected to the external PLC controller.

7. The impact testing machine for polymer materials according to claim 1, characterized in that: The first fixing frame (1) has a mounting slot on its front side, and a display (9) is installed inside the mounting slot. The input terminal of the display (9) is electrically connected to the output terminal of an external PLC controller.

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