A device for detecting tensile strength of a modified plastic

Abstract

The utility model relates to modified plastics detection technical field, and disclose a kind of tensile strength detection device of modified plastics, including detection equipment ontology, the moving plate of being set in the inside of detection equipment ontology and the tension detector of being installed in the bottom of moving plate and the top of detection equipment ontology, further include: fixed in the concave plate of tension detector one end, the front and rear of inside in concave plate are rotatably connected with clamp roller;The utility model when modified plastics is inserted into two clamp rollers, with the cooperation of ratchet wheel, gear and limiting structure, so that clamp roller can only rotate in one direction, so when modified plastics is subjected to tension, only more and more tight, so it can improve the stability of modified plastics when stretching, while after stretching ends, through the cooperation of limiting structure and elastic structure, the limiting of clamp roller can be cancelled, so that clamp roller can rotate at will, so it is convenient to unload operation to modified plastics.

Description

Technical Field

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

[0002] Modified plastics refer to plastic products that have been modified from general-purpose plastics and engineering plastics through methods such as filling, blending, and reinforcement, thereby improving their properties such as flame retardancy, strength, impact resistance, and toughness.

[0003] After the modified plastics are produced, a tensile strength testing device is needed to test their tensile strength for convenient use. Currently, before testing the modified plastics, one end of the modified plastic is inserted between two clamping plates, and then the modified plastic is clamped and fixed by lateral clamping force. During stretching, external force is needed to maintain the lateral compression and clamping of the modified plastic. When the lateral clamping force loosens, the modified plastic is prone to falling off, which will cause inconvenience to the subsequent tensile testing. Utility Model Content

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

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tensile strength testing device for modified plastics, comprising a testing device body, a movable plate disposed inside the testing device body, and a tensile testing instrument installed at the bottom of the movable plate and the top of the testing device body, further comprising:

[0006] A concave plate is fixed to one end of a tensile testing instrument. The front and rear sides of the inner side of the concave plate are rotatably connected to clamping rollers. Rotating rods are fixed to both ends of the clamping rollers on both sides. Gears and ratchet are respectively fixed to the surface of the rotating rods.

[0007] A limiting structure is provided on the surface of a concave plate, and elastic structures that cooperate with the limiting structure are provided on the upper sides of both sides of the concave plate.

[0008] Preferably, the limiting structure includes a fixed plate fixed to both sides of the concave plate, an extension frame fixedly connected inside the fixed plate, a movable block slidably connected inside the extension frame, a movable rod slidably passing through the extension frame, a locking plate fixedly connected to the surface of the movable rod, the surface of the movable rod rotatably connected to one side of the movable block, a locking groove opened on the right side of the top of the extension frame, a spring sleeved on the surface of the movable rod, the two ends of the spring being fixed to the extension frame and the movable block respectively, a support plate fixedly connected to the top of the movable block, and limiting plates hinged to both sides of the top of the support plate.

[0009] Preferably, the elastic structure includes a support frame fixedly connected to the top of the support plate, mounting plates fixedly connected to both sides of the top of the support frame, a spring plate slidably connected inside the mounting plate, and springs fixed between one end of the spring plate and both sides of the inner wall of the mounting plate.

[0010] Preferably, support blocks are fixedly connected to both ends of the support plate, and the support blocks are located at the bottom of one end of the limiting plate.

[0011] Preferably, connecting blocks are fixedly connected to both sides of one end of the spring plate, and long grooves that cooperate with the connecting blocks are opened on both sides of the inner cavity of the mounting plate.

[0012] Preferably, one end of the spring plate is inclined, and its inclination angle is adapted to one side of the limiting plate.

[0013] Preferably, the limiting plate is arc-shaped and its inclination angle corresponds to that of the ratchet teeth.

[0014] Preferably, the other end of the movable rod is fixedly connected to a pull plate, and a handle is provided on the outside of the pull plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] When the modified plastic is inserted into two clamping rollers, the ratchet, gear and limiting structure work together to make the clamping rollers rotate in only one direction. As a result, when the modified plastic is subjected to tension, it will only be pulled tighter and tighter, which can improve the stability of the modified plastic during stretching. At the same time, after stretching, the limiting structure and elastic structure work together to remove the limiting of the clamping rollers, so that the clamping rollers can rotate freely, which facilitates the feeding operation of the modified plastic. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the concave plate, tensile testing instrument, and clamping roller in this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the present invention with the fixing plate cut open;

[0020] Figure 4 This is a three-dimensional structural diagram of the clamping roller in this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the present invention with the concave plate cut open.

[0022] Figure 6This is a three-dimensional structural diagram of the present invention with one side of the mounting plate cut open;

[0023] Figure 7 This is a three-dimensional structural diagram of the present invention with the fixing plate and extension frame cut apart.

[0024] In the diagram: 1. Testing equipment body; 2. Moving plate; 3. Tensile testing instrument; 4. Concave plate; 5. Clamping roller; 6. Rotating rod; 7. Gear; 8. Limiting structure; 801. Fixed plate; 802. Extension frame; 803. Moving rod; 804. Slot; 805. Moving block; 806. Clamping plate; 807. Spring 1; 808. Support plate; 809. Limiting plate; 9. Elastic structure; 901. Support frame; 902. Mounting plate; 903. Spring plate; 904. Spring 2; 10. Support block; 11. Connecting block; 12. Ratchet; 13. Pulling plate. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-7 As shown, a tensile strength testing device for modified plastics includes a testing device body 1. A movable plate 2 is disposed inside the testing device body 1. A mobile device capable of driving the movable plate 2 to move up and down is disposed inside the testing device body 1. A tensile testing instrument 3 is installed between the bottom of the movable plate 2 and the top of the worktable of the testing device body 1. The aforementioned mobile device and tensile testing instrument 3 are existing technologies and are well known to those skilled in the art, and will not be described in detail here. A concave plate 4 is fixed to one end of the tensile testing instrument 3, and the inner side of the concave plate 4 can rotate both front and rear. A clamping roller 5 is connected to both ends of the clamping roller 5, and a rotating rod 6 is fixed at both ends. A gear 7 and a ratchet 12 are fixed on the surface of the rotating rod 6 respectively. Two adjacent gears 7 mesh with each other. A limiting structure 8 that can tighten the ratchet 12 is provided on both sides of the concave plate 4. The limiting structure 8 includes a fixing plate 801 fixed on both sides of the concave plate 4. An extension frame 802 is fixedly connected inside the fixing plate 801. An elastic structure 9 that works with the limiting structure 8 is provided on the upper part of both sides of the concave plate 4. The elastic structure 9 includes a support frame 901 fixedly connected to the top of the support plate 808.

[0027] The extension frame 802 has a sliding block 805 inside, and a sliding rod 803 slides through the extension frame 802. A locking plate 806 is fixedly connected to the surface of the sliding rod 803. The surface of the sliding rod 803 is rotatably connected to one side of the sliding block 805. A slot 804 is provided on the right side of the top of the extension frame 802. The locking plate 806 and the slot 804 cooperate with each other. A support plate 808 is fixedly connected to the top of the sliding block 805. Limiting plates 809 are hinged to both sides of the top of the support plate 808, and one end of the limiting plate 809 cooperates with the ratchet 12.

[0028] Mounting plates 902 are fixedly connected to both sides of the top of the support frame 901. Spring plates 903 are slidably connected inside the mounting plates 902. Springs 904 are fixed between one end of the spring plate 903 and both sides of the inner wall of the mounting plate 902. As the springs 904 exert their elastic force, they can always drive the spring plate 903 to move outward, so as to apply force to the limiting plate 809 and enable the limiting plate 809 to cooperate with the ratchet 12.

[0029] The other end of the moving rod 803 is fixedly connected to a pull plate 13, and a handle is provided on the outside of the pull plate 13, so that the user can easily pull the pull plate 13 to pull the moving rod 803 together.

[0030] It is worth noting that the technical features proposed in this technical solution, such as the testing equipment body 1 and the tensile testing instrument 3, should be regarded as prior art. The specific structure, working principle, and possible control methods and spatial arrangement of these technical features can be selected using conventional methods in this field. This technical solution will not elaborate further.

[0031] Both ends of the support plate 808 are fixedly connected to support blocks 10, and the support blocks 10 are located at the bottom of one end of the limiting plate 809. This can provide auxiliary support for the limiting plate 809 and prevent it from rotating excessively.

[0032] Working Principle: In use, one end of the modified plastic can be inserted into the two clamping rollers 5 inside the lower concave plate 4. Due to the cooperation of the ratchet 12 on both sides of the lower concave plate 4 and the limiting structure 8, the two clamping rollers 5 can only roll to one side, thus improving the stability after clamping. The surface of the clamping rollers 5 is covered with anti-slip sleeves made of rubber. This increases the friction between the modified plastic and the clamping rollers 5 after it is inserted between them, thereby improving the clamping stability. After one end of the modified plastic is fixed by the two clamping rollers 5 inside the lower concave plate 4, the other end of the modified plastic can be inserted into the two clamping rollers 5 inside the upper concave plate 4, as shown in the above steps. During testing, the moving plate 2 can be moved upward by the moving device inside the testing equipment body 1, moving the modified plastic along with it, thereby stretching the modified plastic. During the stretching process, the tensile strength tester 3 can measure the resulting tension. The tension is tested and the test data is transmitted to the display screen of the testing equipment body 1. After the test is completed, the moving plate 2 can be moved downward again by the moving equipment, and the pulling of the modified plastic can be canceled. Then, when the modified plastic is taken out, the pull plate 13 can be rotated and the clamping plate 806 can be rotated from the inside of the clamping slot 804. After the clamping plate 806 is adapted to the clamping slot 804, the pull plate 13 can be pulled outward. The surface of the moving rod 803 is fitted with a spring 807. The two ends of the spring 807 are fixed between the extension frame 802 and the moving block 805 respectively. After the modified plastic is inserted between the two clamping rollers 5, as the spring 807 applies elastic force to the moving block 805, it can always drive the moving block 805 and the support plate 808 to move towards one side of the ratchet 12. This allows the two limiting plates 809 at the top of the support plate 808 to be engaged in the teeth of the ratchet 12 so that it can only rotate in one direction.

[0033] The extension frame 802 moves inside the fixed plate 801 until the limiting plate 809 disengages from the teeth of the ratchet 12, thereby releasing the limiting of the clamping roller 5. The modified plastic can then be removed from the two clamping rollers 5. After removal, the above operation can be repeated, and force is applied to the extension frame 802 again, causing the clamping plate 806 to enter the clamping slot 804. Then, the moving rod 803 is rotated again to reposition the extension frame 802, so that the limiting plate 809 is once again engaged in the teeth of the ratchet 12. Connecting blocks 11 are fixedly connected to both sides of one end of the spring plate 903, and connecting blocks 11 are opened on both sides of the inner cavity of the mounting plate 902. The connecting block 11 is used in conjunction with the long groove. As the connecting block 11 slides inside the long groove, it not only improves the stability of the spring plate 903 when it moves, but also limits the spring plate 903 to prevent it from sliding out of the mounting plate 902. The limiting plate 809 is arc-shaped and its tilt angle corresponds to the teeth of the ratchet 12. This allows the limiting plate 809 to better limit the ratchet 12. One end of the spring plate 903 is tilted and its tilt angle is adapted to one side of the limiting plate 809. This setting allows the spring plate 903 to better push the limiting plate 809 when it moves outward.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0035] 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 strength testing device for modified plastics, comprising a testing device body (1), a movable plate (2) disposed inside the testing device body (1), and a tensile testing instrument (3) installed at the bottom of the movable plate (2) and the top of the testing device body (1), characterized in that, Also includes: A concave plate (4) is fixed to one end of a tensile testing instrument (3). The front and rear sides of the inner side of the concave plate (4) are rotatably connected with clamping rollers (5). Both ends of the clamping rollers (5) on both sides are fixed with rotating rods (6). Gears (7) and ratchet (12) are fixed on the surface of the rotating rods (6) respectively. A limiting structure (8) is provided on the surface of the concave plate (4), and an elastic structure (9) is provided on the upper sides of both sides of the concave plate (4) to cooperate with the limiting structure (8).

2. The tensile strength testing device for modified plastics according to claim 1, characterized in that: The limiting structure (8) includes a fixing plate (801) fixed on both sides of the concave plate (4). An extension frame (802) is fixedly connected inside the fixing plate (801). A moving block (805) is slidably connected inside the extension frame (802). A moving rod (803) slides through the extension frame (802). A card plate (806) is fixedly connected to the surface of the moving rod (803). The surface of the moving rod (803) is rotatably connected to one side of the moving block (805). A slot (804) is provided on the right side of the top of the extension frame (802). A spring (807) is sleeved on the surface of the moving rod (803). The two ends of the spring (807) are fixed between the extension frame (802) and the moving block (805) respectively. A support plate (808) is fixedly connected to the top of the moving block (805). Limiting plates (809) are hinged to both sides of the top of the support plate (808).

3. The tensile strength testing device for modified plastics according to claim 2, characterized in that: The elastic structure (9) includes a support frame (901) fixedly connected to the top of the support plate (808). Mounting plates (902) are fixedly connected to both sides of the top of the support frame (901). A spring plate (903) is slidably connected inside the mounting plate (902). Springs (904) are fixed between one end of the spring plate (903) and both sides of the inner wall of the mounting plate (902).

4. The tensile strength testing device for modified plastics according to claim 2, characterized in that: Both ends of the support plate (808) are fixedly connected to support blocks (10), and the support blocks (10) are located at the bottom of one end of the limiting plate (809).

5. The tensile strength testing device for modified plastics according to claim 3, characterized in that: Both sides of one end of the spring plate (903) are fixedly connected to connecting blocks (11), and both sides of the inner cavity of the mounting plate (902) are provided with long grooves that cooperate with the connecting blocks (11).

6. The tensile strength testing device for modified plastics according to claim 3, characterized in that: One end of the spring plate (903) is inclined.

7. The tensile strength testing device for modified plastics according to claim 2, characterized in that: The limiting plate (809) is arc-shaped and corresponds to the tilt angle of the ratchet (12) teeth.

8. The tensile strength testing device for modified plastics according to claim 2, characterized in that: The other end of the movable rod (803) is fixedly connected to a pull plate (13), and a handle is provided on the outside of the pull plate (13).

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