Device for testing impact performance of plastic material

Abstract

The utility model discloses a device for testing the impact performance of a plastic material, which comprises a base and a support arranged at the top of the base, the upper end of the support is provided with a testing assembly, the testing assembly comprises a lifting frame movably arranged at the upper end of the support, and the bottom of the lifting frame is provided with a punch; the traction assembly comprises a second guide wheel which is rotatably connected to the upper end of the support and corresponds to the lifting frame, a first guide wheel is rotatably arranged on one side of the support, a first rotating shaft is rotatably connected to one end of the top of the base, a winding roller is fixedly arranged on the first rotating shaft, and a second guide wheel is rotatably arranged on the winding roller. And a traction rope is fixedly arranged on the winding roller. According to the device for testing the impact performance of the plastic material, the arranged testing assembly is matched with the traction assembly, so that rising and resetting of the punch can be automatically achieved after testing, subsequent testing use is facilitated, manual resetting is not needed, convenience is improved, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of plastic testing, in particular to a device for testing the impact performance of plastic materials. Background Art

[0002] Plastic products are a general term for household and industrial products made primarily from plastic. This includes products made using all processes, including injection molding and blister molding. Plastic is a type of synthetic polymer material with plasticity. After forming through these processes, plastic products typically undergo impact testing.

[0003] Chinese Patent Publication No. CN219284910U discloses an impact testing machine, comprising a frame, a placing platform provided on the frame, slide bars provided on both sides of the placing platform, a load impact mechanism and a release control mechanism slidably connected to the slide bars, a traction mechanism for controlling the lifting and lowering of the release control mechanism provided on the top of the release control mechanism, the release control mechanism provided above the load impact mechanism, the release control mechanism comprising a hook assembly for hooking with the load impact mechanism and driving the load impact mechanism to be lifted to a height to be measured or for releasing the load impact mechanism and allowing the load impact mechanism to fall from the height to be measured, weight adjustment assemblies being provided at both ends of the load impact mechanism, a control box provided on one side of the frame, the control box being electrically and signal-connected to the traction mechanism and the release control mechanism, respectively.

[0004] In the above-mentioned prior art, when performing impact tests on plastic products, a heavy object is generally dropped freely to impact the plastic product. Therefore, the heavy object needs to be manually raised after the test, which is time-consuming and labor-intensive, affecting the efficiency of subsequent tests.

[0005] Therefore, it is necessary to propose a device for testing the impact performance of plastic materials to solve the above problems. Utility Model Content

[0006] The main purpose of the present invention is to provide a device for testing the impact performance of plastic materials, which can effectively solve the problems in the background technology.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A device for testing the impact performance of plastic materials, comprising a base and a bracket disposed on the top of the base, a testing assembly disposed on the upper end of the bracket, the testing assembly comprising a lifting frame movably disposed on the upper end of the bracket, and a punch disposed on the bottom of the lifting frame;

[0009] The traction assembly is further provided with a second guide wheel which is rotatably connected to the upper end of the bracket and corresponds to the lifting frame, and the traction assembly includes a first guide wheel which is rotatably provided on one side of the bracket, and one end of the top of the base is rotatably connected to the first rotating shaft, and a winding roller is fixedly provided on the first rotating shaft, and a traction rope is fixedly provided on the winding roller, and the free end of the traction rope passes around the first guide wheel and the second guide wheel in sequence and is fixedly connected to the top middle of the lifting frame, one end of the first rotating shaft is provided with a driven wheel, a second fixed frame is provided at the top of the base corresponding to the winding roller, and a motor is fixedly provided on the second fixed frame, and an output end of the motor is provided with a second rotating shaft which is driven to rotate by the motor, and an end of the second rotating shaft away from the motor is provided with a driving wheel which meshes with the driven wheel.

[0010] Preferably, it also includes an unlocking component, which is used to control the separation of the driving wheel and the driven wheel, and the unlocking component includes a first fixing bracket arranged on the top of the base and corresponding to the second fixing bracket, a cylinder is fixedly arranged at one end of the first fixing bracket, the second rotating shaft is a hollow structure, and the inner side of the end of the second rotating shaft away from the motor is movably connected to the adjusting shaft along the axial direction of the second rotating shaft, the driving wheel is fixedly arranged on the adjusting shaft, one end of the first fixing bracket is rotatably connected to the cylinder, the end of the adjusting shaft away from the second rotating shaft is movably connected to the cylinder, one end of the adjusting shaft is rotatably connected to the traction plate, and the output shaft of the cylinder is fixedly connected to the side wall of one end of the traction plate.

[0011] Preferably, the adjusting shaft is connected to the second rotating shaft and the cylinder by a key;

[0012] The traction plate is rotatably connected to the adjustment shaft via a bearing;

[0013] The cylinder is rotatably connected to the first fixing frame via a bearing.

[0014] Preferably, the base is provided with a through slot corresponding to the lifting frame, and positioning seats for supporting and positioning the plastic material are symmetrically provided on both sides of the upper end of the through slot.

[0015] Preferably, a guide column is vertically provided between the top of the base and the upper end of the bracket, and the lifting frame and the guide column are movably connected through a linear bearing.

[0016] Preferably, a buffer sleeve is provided on the outer movable sleeve of the lower end of the guide column, and a buffer spring is provided on the bottom of the buffer sleeve and is sleeved on the outside of the guide column, and the top of the buffer sleeve is higher than the top of the positioning seat in the initial state of the buffer spring.

[0017] Compared with the prior art, the present invention provides a device for testing the impact performance of plastic materials, which has the following beneficial effects:

[0018] The device for testing the impact performance of plastic materials can automatically realize the rising and resetting of the punch after the test by means of the provided test component and the traction component, which is convenient for subsequent testing and does not require manual restoration, thereby increasing convenience and improving work efficiency. The setting of the unlocking component facilitates the separation of the driving wheel and the driven wheel, so that the punch and the lifting frame can fall down as a whole by themselves during the test. The setting of the buffer sleeve and the buffer spring facilitates the buffer protection of the lifting frame when the punch breaks through the plastic material, thereby preventing the lifting frame from directly hitting the positioning seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the utility model from another perspective;

[0021] Figure 3 This is a schematic diagram of the overall structure of the traction component and the test component of the utility model;

[0022] Figure 4 It is a structural diagram of the traction assembly and the unlocking assembly of the utility model;

[0023] Figure 5 It is a structural diagram of the unlocking component of the utility model;

[0024] Figure 6 This is a schematic cross-sectional view of the unlocking assembly of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the lower end of the guide column of the utility model.

[0026] In the figure: 1. Base; 2. Guide column; 3. Bracket; 4. Lifting frame; 5. Traction rope; 6. Positioning seat; 7. First guide wheel; 8. Second guide wheel; 9. Punch; 10. Winding roller; 11. First rotating shaft; 12. First fixed frame; 13. Motor; 14. Second rotating shaft; 15. Guide rod; 16. Driven wheel; 17. Traction plate; 18. Adjusting shaft; 19. Driving wheel; 20. Cylinder; 21. Second fixed frame; 22. Cylinder; 23. Through groove; 24. Buffer sleeve; 25. Buffer spring. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] like Figure 1-7As shown, a device for testing the impact properties of plastic materials includes a base 1 and a bracket 3 disposed on the top of the base 1. The base 1 is provided with a through slot 23 corresponding to the lifting frame 4. Positioning seats 6 for supporting and positioning the plastic material are symmetrically disposed on both sides of the upper end of the through slot 23. A testing assembly is disposed on the upper end of the bracket 3. The testing assembly includes a lifting frame 4 movably disposed on the upper end of the bracket 3. A punch 9 is disposed at the bottom of the lifting frame 4.

[0029] It also includes a traction assembly for controlling the rise of the test assembly, the traction assembly includes a second guide wheel 8 rotatably connected to the upper end of the bracket 3 and corresponding to the lifting frame 4, a first guide wheel 7 is rotatably provided on one side of the bracket 3, one end of the top of the base 1 is rotatably connected to the first rotating shaft 11, a winding roller 10 is fixedly provided on the first rotating shaft 11, a traction rope 5 is fixedly provided on the winding roller 10, and the free end of the traction rope 5 is successively passed around the first guide wheel 7 and the second guide wheel 8 and fixedly connected to the top middle part of the lifting frame 4, a driven wheel 16 is provided at one end of the first rotating shaft 11, a second fixed frame 21 is provided at the top of the base 1 corresponding to the winding roller 10, a motor 13 is fixedly provided on the second fixed frame 21, and a second rotating shaft 14 driven to rotate by the motor 13 is provided at the output end of the motor 13, and a driving wheel 19 meshing with the driven wheel 16 is provided at the end of the second rotating shaft 14 away from the motor 13.

[0030] Furthermore, it also includes an unlocking component, which is used to control the separation of the driving wheel 19 and the driven wheel 16. The unlocking component includes a first fixing frame 12 arranged at the top of the base 1 and corresponding to the second fixing frame 21. A cylinder 20 is fixedly arranged at one end of the first fixing frame 12. The second rotating shaft 14 is a hollow structure, and the inner side of the end of the second rotating shaft 14 away from the motor 13 is movably connected with an adjusting shaft 18 along the axial direction of the second rotating shaft 14. The driving wheel 19 is fixedly arranged on the adjusting shaft 18. A cylinder 22 is provided at one end of the first fixing frame 12. The cylinder 22 is rotatably connected to the first fixing frame 12 through a bearing. The end of the adjusting shaft 18 away from the second rotating shaft 14 is movably connected to the cylinder 22, and the adjusting shaft 18 and the second rotating shaft 14 and the cylinder 22 are all key-connected to ensure that the adjusting shaft 18 can only be displaced axially along the second rotating shaft 14. A traction plate 17 is provided at one end of the adjusting shaft 18. The traction plate 17 is rotatably connected to the adjusting shaft 18 through a bearing, and the output shaft of the cylinder 20 is fixedly connected to the side wall of one end of the traction plate 17.

[0031] Furthermore, a guide column 2 is vertically provided between the top of the base 1 and the upper end of the bracket 3, and the lifting frame 4 is movably connected to the guide column 2 via a linear bearing.

[0032] A buffer sleeve 24 is provided on the outer movable sleeve of the lower end of the guide post 2. A buffer spring 25 is provided on the bottom of the buffer sleeve 24 and is sleeved on the outside of the guide post 2. When the buffer spring 25 is in the initial state, the top of the buffer sleeve 24 is higher than the top of the positioning seat 6.

[0033] In order to increase the stability of the pulling plate 17 , a guide rod 15 is provided between the first fixing frame 12 and the second fixing frame 21 , and one end of the pulling plate 17 is movably and guidingly connected to the guide rod 15 .

[0034] When in use, the plastic material to be tested is placed on the positioning seat 6, and then the cylinder 20 is controlled to drive the adjusting shaft 18 to axially displace along the second rotating shaft 14 through the traction plate 17, so that the driving wheel 19 is separated from the driven wheel 16, and then the lifting frame 4 and the punch 9 fall under their own weight and impact the plastic material, and the winding roller 10 is driven to rotate to unwind the traction rope 5. Once broken, the lifting frame 4 can contact the buffer sleeve 24, and then compress the buffer spring 25 to buffer and protect the lifting frame 4 under the reverse force, and the through groove 23 can accommodate and avoid the broken plastic material. After completion, the cylinder 20 drives the traction plate 17 to reverse displacement and reset, and the driving wheel 19 is meshed with the driven wheel 16, and then the motor 13 is controlled to drive the overall rotation of the second rotating shaft 14 and the adjusting shaft 18. The driving wheel 19 drives the first rotating shaft 11 to rotate through the driven wheel 16, and the first rotating shaft 11 drives the winding roller 10 to rotate to reel the traction rope 5, and then the traction rope 5 can pull the lifting frame 4 up and reset through the first guide wheel 7 and the second guide wheel 8;

[0035] It should be noted that, since the lifting frame 4 and the punch 9 need to overcome the resistance caused by the traction rope 5, the winding roller 10, etc. when falling, a certain mass of weight can be added to the lifting frame 4 to offset these additional resistances, thereby increasing the test accuracy.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A device for testing the impact performance of plastic materials, comprising a base (1) and a bracket (3) arranged on the top of the base (1), characterized in that: A test assembly is provided at the upper end of the bracket (3), and the test assembly comprises a lifting frame (4) movably provided at the upper end of the bracket (3), and a punch (9) is provided at the bottom of the lifting frame (4); The test assembly is also provided with a traction assembly for controlling the rise of the test assembly, wherein the traction assembly includes a second guide wheel (8) rotatably connected to the upper end of the bracket (3) and corresponding to the lifting frame (4), a first guide wheel (7) is rotatably provided on one side of the bracket (3), and a first rotating shaft (11) is rotatably connected to one end of the top of the base (1), a winding roller (10) is fixedly provided on the first rotating shaft (11), a traction rope (5) is fixedly provided on the winding roller (10), and the free end of the traction rope (5) is passed through the first guide wheel (7), the second guide wheel ( 8) and is fixedly connected to the top middle part of the lifting frame (4), one end of the first rotating shaft (11) is provided with a driven wheel (16), a second fixed frame (21) is provided at the top of the base (1) corresponding to the winding roller (10), a motor (13) is fixedly provided on the second fixed frame (21), an output end of the motor (13) is provided with a second rotating shaft (14) driven to rotate by the motor (13), and an end of the second rotating shaft (14) away from the motor (13) is provided with a driving wheel (19) meshing with the driven wheel (16).

2. The device for testing the impact properties of plastic materials according to claim 1, characterized in that: The invention also includes an unlocking component, which is used to control the separation of the driving wheel (19) and the driven wheel (16). The unlocking component includes a first fixing frame (12) arranged on the top of the base (1) and corresponding to the second fixing frame (21), one end of the first fixing frame (12) is fixedly provided with a cylinder (20), the second rotating shaft (14) is a hollow structure, and the inner side of the end of the second rotating shaft (14) away from the motor (13) is movably connected to the adjusting shaft (18) along the axial direction of the second rotating shaft (14), the driving wheel (19) is fixedly provided on the adjusting shaft (18), one end of the first fixing frame (12) is rotatably connected to the cylinder (22), the end of the adjusting shaft (18) away from the second rotating shaft (14) is movably connected to the cylinder (22), one end of the adjusting shaft (18) is rotatably connected to the traction plate (17), and the output shaft of the cylinder (20) is fixedly connected to the side wall of one end of the traction plate (17).

3. The device for testing the impact properties of plastic materials according to claim 2, characterized in that: The adjusting shaft (18), the second rotating shaft (14), and the cylinder (22) are all connected by keys; The traction plate (17) is rotatably connected to the adjustment shaft (18) via a bearing; The cylinder (22) is rotatably connected to the first fixed frame (12) via a bearing.

4. The device for testing the impact properties of plastic materials according to claim 1, characterized in that: The base (1) is provided with a through slot (23) corresponding to the lifting frame (4), and positioning seats (6) for supporting and positioning the plastic material are symmetrically provided on both sides of the upper end of the through slot (23).

5. The device for testing the impact properties of plastic materials according to claim 1, characterized in that: A guide column (2) is vertically arranged between the top of the base (1) and the upper end of the bracket (3), and the lifting frame (4) and the guide column (2) are movably connected via a linear bearing.

6. The device for testing the impact properties of plastic materials according to claim 5, characterized in that: A buffer sleeve (24) is provided on the outer movable sleeve of the lower end of the guide column (2). A buffer spring (25) is provided on the bottom of the buffer sleeve (24) and is sleeved on the outside of the guide column (2). In the initial state of the buffer spring (25), the top of the buffer sleeve (24) is higher than the top of the positioning seat (6).

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