Tension detection device for modified plastic part

Abstract

The utility model relates to the technical field of tension detection, in particular to a modified plastic part tension detection device which comprises a bottom plate, a working table is fixedly installed on the upper surface of the bottom plate, a base is arranged on the upper surface of the working table, a main rod is fixedly connected to the upper surface of the base, and a side pulling device is arranged on the main rod. Supporting plates are fixedly connected to the two sides of the workbench, a top plate is fixedly connected to the upper surfaces of the supporting plates, an electric push rod is fixedly connected to the upper surface of the top plate, the top of a main rod is fixedly connected with the top plate, a first sliding groove is formed between the two supporting plates, and a lifting plate is arranged in the first sliding groove. Clamping mechanisms are arranged on the lower surface of the lifting plate and the upper surface of the workbench; the device has the beneficial effects that when the plastic is subjected to a tension test, the device not only can realize a linear tension test, but also can realize a side tension test or an arc tension test.

Description

Technical Field

[0001] This utility model relates to the field of tensile testing technology, specifically a tensile testing device for modified plastic parts. Background Technology

[0002] Plastics are widely used in numerous fields such as automobiles, electronics, aerospace, construction, and medicine due to their advantages including light weight, corrosion resistance, and ease of processing and molding. For example, dashboards and seat armrests in automobile interiors are largely made of plastic; the casings and components of electronic and electrical products are also often made of plastic. In these applications, plastic parts often need to withstand certain tensile and other mechanical loads, therefore, tensile testing devices are required to test them after manufacturing.

[0003] In existing technologies, common tensile testing devices clamp a plastic strip onto two clamping mechanisms, then move the two mechanisms in opposite directions, gradually increasing the tensile force. The force is then measured using a tensile gauge. However, this device can only measure the tensile force the plastic strip can withstand under linear tension, not the tensile force applied from the side. Therefore, this invention proposes a modified plastic part tensile testing device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a tensile testing device for modified plastic parts to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tensile testing device for modified plastic parts, comprising: a base plate, a worktable fixedly mounted on the upper surface of the base plate, a base provided on the upper surface of the worktable, a main rod fixedly connected to the upper surface of the base, a side pulling device provided on the main rod, support plates fixedly connected to both sides of the worktable, a top plate fixedly connected to the upper surface of the support plates, an electric push rod fixedly connected to the upper surface of the top plate, the top of the main rod fixedly connected to the top plate, a first sliding groove provided between the two support plates, a lifting plate provided in the first sliding groove, and clamping mechanisms provided on the lower surface of the lifting plate and the upper surface of the worktable.

[0006] Preferably, the side-pulling device includes a lifting ring, a fixed rod, a telescopic rod, a cross plate, a slider, and a fixing block. The lifting ring is sleeved on the main rod and slidably connected thereto. A screw is provided on one side of the lifting ring. The fixed rod is fixedly connected to one side of the lifting ring. The telescopic rod extends into one end of the fixed rod and is slidably connected thereto. The cross plate is fixedly connected to one end of the telescopic rod. The slider is sleeved on the cross plate and slidably connected thereto. The fixing block is fixedly connected to one end of the cross plate.

[0007] Preferably, a pair of second clamping blocks are provided between the fixed block and the slider, a threaded rod is fixedly connected to one side of the fixed block, the threaded rod passes through the slider and is slidably connected to it, a rotating wheel is threaded to one end of the threaded rod, and a second air hole is fixedly installed on the fixed rod.

[0008] Preferably, the clamping mechanism includes a connecting column, a fixing column, and a clamping column, wherein one of the connecting columns is fixedly connected to the worktable, and the other connecting column is fixedly connected to the lifting plate. One end of the connecting column is fixedly connected to the fixing column, and one end of the fixing column is fixedly connected to the clamping column.

[0009] Preferably, a first air hole is fixedly installed on the side of the clamping column, a first groove is formed on the upper surface of the fixing column, a second groove is formed at the bottom of the first groove, a pair of first clamping blocks are provided in the second groove, and each first clamping block has horizontal lines on one side.

[0010] Preferably, slots are provided on both side walls of the first chute, and a pair of telescopic locking posts are provided on both sides of the lifting plate, the telescopic locking posts being adapted to the slots.

[0011] Preferably, a control panel is fixedly connected to the upper surface of the base plate, and buttons are provided on the upper surface of the control panel.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention, by setting up a side-pull device, effectively enables the use of this equipment to perform not only straight-line tensile tests, but also side-pull tests or curved-line tensile tests when performing tensile tests on plastics. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a three-dimensional structural diagram of the clamping mechanism of this utility model;

[0016] Figure 3 This utility model Figure 2 A magnified structural diagram at point A;

[0017] Figure 4 This is a three-dimensional structural schematic diagram of the lifting plate of this utility model;

[0018] Figure 5 This is a three-dimensional structural schematic diagram of the side-pull device of this utility model.

[0019] In the diagram: 1. Base plate; 2. Control panel; 3. Support plate; 4. Electric push rod; 5. Button; 6. Top plate; 7. Workbench; 8. First slide groove; 9. Slot; 10. Main rod; 12. Side pull device; 13. Base; 14. Clamping mechanism; 15. Lifting plate; 16. Telescopic locking post; 17. Connecting post; 18. Fixing post; 19. Clamping post; 20. First groove; 21. First air hole; 22. Second groove; 23. First clamping block; 24. Horizontal stripe; 25. Lifting ring; 26. Screw; 27. Second air hole; 28. Telescopic rod; 29. ​​Horizontal plate; 30. Slider; 31. Fixing block; 32. Threaded rod; 33. Rotating wheel; 34. Second clamping block; 36. Fixing rod. Detailed Implementation

[0020] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0021] Example 1

[0022] Please see Figure 1This utility model provides a technical solution: a modified plastic part tensile testing device, comprising: a base plate 1, a worktable 7 fixedly mounted on the upper surface of the base plate 1, the worktable 7 serving as the basic working platform for placing the equipment used in the work, a base 13 provided on the upper surface of the worktable 7, the base 13 serving as the base of the equipment, a main rod 10 fixedly connected to the upper surface of the base 13, the main rod 10 serving as the vertical moving rod of the entire device, also providing a certain supporting function, a side pulling device 12 provided on the main rod 10, the side pulling device 12 being driven by gas to move, when the plastic to be measured is fixed, the side pulling device 12 is used to stretch it until the plastic strip breaks, and support plates 3 fixedly connected to both sides of the worktable 7, the support plates 3 serving to support the top plate 6. A top plate 6 is fixedly connected to the upper surface of the support plate 3, making the support plate 3 more stable. An electric push rod 4 is fixedly connected to the upper surface of the top plate 6. The output end of the electric push rod 4 passes through the top plate 6 and is slidably connected to it. The output end of the electric push rod 4 is fixedly connected to the lifting plate 15. The top of the main rod 10 is fixedly connected to the top plate 6, so the main rod 10 can be firmly fixed. A first sliding groove 8 is opened between the two support plates 3. The first sliding groove 8 is arranged opposite to each other. The lifting plate 15 is arranged in the first sliding groove 8. The lifting plate 15 slides in the first sliding groove 8 during the lifting process. A clamping mechanism 14 is provided on the lower surface of the lifting plate 15 and the upper surface of the worktable 7. There are two clamping mechanisms 14 to ensure that the plastic strip is fixed by the upper and lower clamping mechanisms 14.

[0023] The entire device first adjusts the positions of the two clamping mechanisms 14, and then clamps the plastic strip between the two clamping mechanisms 14. If only a straight stretch test is needed, it can be opened directly. If it needs to be done through side stretching or other methods, the side stretching device 12 can be activated by button 5.

[0024] Example 2

[0025] Please see Figure 5Based on Embodiment 1, the side-pull device 12 includes a lifting ring 25, a fixed rod 36, a telescopic rod 28, a horizontal plate 29, a slider 30, and a fixing block 31. The lifting ring 25 is sleeved on the main rod 10 and slidably connected to it. A screw 26 is provided on one side of the lifting ring 25. The screw 26 extends into the side wall of the side-pull ring and is threadedly connected to it. The tightness of the screw 26 can adjust the lifting and lowering of the lifting ring 25. The fixed rod 36 is fixedly connected to one side of the lifting ring 25 and provides a certain support. The telescopic rod 28 extends into one end of the fixed rod 36 and is slidably connected to it. The extension and retraction of the telescopic rod 28 is pneumatically driven. The horizontal plate 29 is fixedly connected to one end of the telescopic rod 28. The horizontal rod moves with the movement of the telescopic rod 28. The slider 30 is sleeved on the horizontal plate 29 and slidably connected to it. The sliding of the slider 30 is accompanied by… The tension of the plastic strip clamped by the side pull device 12 is adjusted. The fixing block 31 is fixedly connected to one end of the horizontal plate 29. The fixing block 31 and the slider 30 cooperate with each other. A pair of second clamping blocks 34 are provided between the fixing block 31 and the slider 30. One of the two second clamping blocks 34 is set on the fixing block 31, and the other second slider 30 is set on the slider 30. A threaded rod 32 is fixedly connected to one side of the fixing block 31. The threaded rod 32 is threaded and passes through the slider 30 and is slidably connected to it. A rotating wheel 33 is threaded to one end of the threaded rod 32. The rotation of the rotating wheel will accompany the sliding of the slider 30. In this way, rotating the rotating wheel can make the second clamping block 34 on the threaded block clamp. A second air hole 27 is fixedly installed on the fixing rod 36. A pair of second air holes 27 are provided, one is an air outlet and the other is an air inlet.

[0026] The side-pull device 12 needs to use the second clamp 34 to clamp the middle of the plastic strip, and then let the telescopic device slowly retract. When the telescopic rod 28 retracts, the side-pull device 12 is working. At this time, the plastic strip will be pulled back. This process is during the process of the second air hole 27 being sucked out, while the telescopic rod 28 is compressed and retracted by atmospheric pressure.

[0027] Example 3

[0028] Please see Figures 2-3Based on Embodiment 2, the clamping mechanism 14 includes a connecting column 17, a fixed column 18, and a clamping column 19. One connecting column 17 is fixedly connected to the worktable 7, and the other connecting column 17 is fixedly connected to the lifting plate 15. One clamping mechanism 14 is located at the top, and the other clamping mechanism 14 is located at the bottom, with the upper and lower clamping mechanisms 14 arranged opposite to each other. One end of the connecting column 17 is fixedly connected to the fixed column 18, and a tension sensor (model JLBS-M2) is installed inside the fixed column 18. The fixed column 18 provides support, and one end of the fixed column 18 is fixedly connected to the clamping column 19, which provides clamping function. The side of the clamping column 19 is fixedly equipped with a first air hole 21. There are two first air holes 21, one is an air inlet and the other is an air intake. The upper surface of the fixing column 18 is provided with a first groove 20. The bottom of the first groove 20 is provided with a second groove 22. The first groove 20 and the second groove 22 are connected and both the first groove 20 and the second groove 22 penetrate the side wall of the fixing column 18. A pair of first clamping blocks 23 are provided in the second groove 22. The first clamping blocks 23 extend into the side wall of the second groove 22 and slide therewith. The extension and retraction of the first clamping blocks 23 are pneumatically driven. Each first clamping block 23 has a horizontal stripe 24 on one side.

[0029] In actual use, place one end of the plastic strip between the two first clamping blocks 23 of the second groove 22 and clamp it by pressing button 5. Then fix the other end in the same way. At this time, the plastic strip is taut and the tension is zero.

[0030] Example 4

[0031] Please see Figure 4 Based on Embodiment 3, slots 9 are provided on both side walls of the first slide 8. The slots 9 are used to fix the lifting plate 15 in the slide. A pair of telescopic locking posts 16 are provided on both sides of the lifting plate 15. The telescopic locking posts 16 are used to slide and connect with the slots. The telescopic locking posts 16 are adapted to the slots 9 and can be inserted into the slots. A control panel 2 is fixedly connected to the upper surface of the base plate 1. The control panel 2 is used to control the entire machine, including the emergency stop switch. A button 5 is provided on the upper surface of the control panel 2. The button 5 can be used to control the entire equipment.

[0032] In actual use, one end of the plastic strip is placed between the two first clamping blocks 23 of the second groove 22 and clamped by pressing button 5. Then the other end is fixed in the same way. At this time, the plastic strip is taut and the tension is zero. The side pulling device 12 needs to use the second clamping block 34 to clamp the middle of the plastic strip. Then the telescopic device is slowly retracted. When the telescopic rod 28 retracts, the side pulling device 12 is working. At this time, the plastic strip will be pulled back. This process is during the process of the second air hole 27 being sucked out, while the telescopic rod 28 is compressed and retracted by atmospheric pressure until the plastic strip breaks. The maximum reading of the tension sensor is recorded.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensile testing device for modified plastic parts, comprising: The base plate (1) is characterized in that: a workbench (7) is fixedly installed on the upper surface of the base plate (1), a base (13) is provided on the upper surface of the workbench (7), a main rod (10) is fixedly connected to the upper surface of the base (13), a side pull device (12) is provided on the main rod (10), support plates (3) are fixedly connected to both sides of the workbench (7), a top plate (6) is fixedly connected to the upper surface of the support plate (3), an electric push rod (4) is fixedly connected to the upper surface of the top plate (6), the top of the main rod (10) is fixedly connected to the top plate (6), a first sliding groove (8) is provided between the two support plates (3), a lifting plate (15) is provided in the first sliding groove (8), and a clamping mechanism (14) is provided on the lower surface of the lifting plate (15) and the upper surface of the workbench (7).

2. The tensile testing device for modified plastic parts according to claim 1, characterized in that: The side-pulling device (12) includes a lifting ring (25), a fixed rod (36), a telescopic rod (28), a horizontal plate (29), a slider (30), and a fixing block (31). The lifting ring (25) is sleeved on the main rod (10) and slidably connected thereto. A screw (26) is provided on one side of the lifting ring (25). The fixed rod (36) is fixedly connected to one side of the lifting ring (25). The telescopic rod (28) extends into one end of the fixed rod (36) and slidably connected thereto. The horizontal plate (29) is fixedly connected to one end of the telescopic rod (28). The slider (30) is sleeved on the horizontal plate (29) and slidably connected thereto. The fixing block (31) is fixedly connected to one end of the horizontal plate (29).

3. The tensile testing device for modified plastic parts according to claim 2, characterized in that: A pair of second clamping blocks (34) are provided between the fixed block (31) and the slider (30). A threaded rod (32) is fixedly connected to one side of the fixed block (31). The threaded rod (32) passes through the slider (30) and is slidably connected to it. A rotating wheel (33) is threadedly connected to one end of the threaded rod (32). A second air hole (27) is fixedly installed on the fixed rod (36).

4. The tensile testing device for modified plastic parts according to claim 3, characterized in that: The clamping mechanism (14) includes a connecting column (17), a fixing column (18), and a clamping column (19). One of the connecting columns (17) is fixedly connected to the worktable (7), and the other connecting column (17) is fixedly connected to the lifting plate (15). One end of the connecting column (17) is fixedly connected to the fixing column (18), and one end of the fixing column (18) is fixedly connected to the clamping column (19).

5. The tensile testing device for modified plastic parts according to claim 4, characterized in that: The clamping post (19) has a first air hole (21) fixedly installed on its side. The upper surface of the fixing post (18) has a first groove (20). The bottom of the first groove (20) has a second groove (22). A pair of first clamping blocks (23) are provided in the second groove (22). Each first clamping block (23) has a horizontal stripe (24) on one side.

6. The tensile testing device for modified plastic parts according to claim 5, characterized in that: The first slide (8) has slots (9) on both side walls, and the lifting plate (15) has a pair of telescopic pins (16) on both sides, which are adapted to the slots (9).

7. The tensile testing device for modified plastic parts according to claim 6, characterized in that: The upper surface of the base plate (1) is fixedly connected to a control panel (2), and the upper surface of the control panel (2) is provided with buttons (5).

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