Hardness detection equipment for modified plastic

Abstract

The hardness detection equipment comprises a fixing frame, a first air cylinder is fixedly arranged at one end of the lower portion of the fixing frame, a telescopic rod is fixedly connected to the side face of the first air cylinder, an adjusting gear is rotationally connected to the middle position of the upper portion of the fixing frame, and an adjusting sliding rail is fixedly arranged at one end of the upper portion of the fixing frame; a clamping adjusting assembly is slidably connected to the upper portion of the adjusting sliding rail, and a vertical rod is arranged on the side face of the fixing frame. A mechanical locking structure of a threaded rod and a clamping plate is adopted by the clamping adjusting assembly, and a gear linkage push tooth plate bidirectional adjusting mechanism driven by a longitudinal air cylinder is matched, so that longitudinal manual flexible locking and transverse double-group symmetrical synchronous clamping of samples can be realized, and the stable fixing requirements of the samples with different sizes are effectively met.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic testing equipment, specifically a hardness testing device for modified plastics. Background Technology

[0002] Modified plastic hardness testing equipment is a core piece of equipment in the field of polymer material quality control. It is mainly used to evaluate the indentation resistance and deformation resistance of plastic products after chemical or physical modification. Modified plastics exhibit non-uniformity in hardness due to the addition of fillers, reinforcing fibers, or functional additives. Traditional hardness testers cannot accurately reflect their true mechanical properties. Such equipment needs to integrate high-precision pressure sensing, adaptive clamping, and multi-point detection functions to meet the testing needs of different modified formulations and irregularly shaped samples in scenarios such as automotive parts, electronic packaging, and medical devices.

[0003] Existing modified plastic hardness testing equipment generally suffers from low clamping and adjustment efficiency and cumbersome operation. The manual clamping mechanism cannot achieve bidirectional synchronous adjustment, resulting in insufficient sample positioning accuracy and long testing time. During the test, the indenter movement range is limited, making it difficult to perform multi-point continuous testing on the material surface, resulting in poor data representativeness. Pressure detection relies on mechanical scale reading, which has low sensitivity and is easily affected by human error, and cannot provide real-time feedback on dynamic pressure changes. Utility Model Content

[0004] The purpose of this invention is to provide a hardness testing device for modified plastics in order to solve the problems mentioned in the background.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hardness testing device for modified plastics, comprising: a fixed frame, a first cylinder fixedly disposed at one lower end of the fixed frame, a telescopic rod fixedly connected to the side of the first cylinder, an adjusting gear rotatably connected to the middle position above the fixed frame, an adjusting slide rail fixedly disposed at one upper end of the fixed frame, a clamping and adjusting assembly slidably connected above the adjusting slide rail, and a vertical rod disposed on the side of the fixed frame.

[0006] As a further embodiment of this utility model: the clamping adjustment assembly includes a slider that is slidably disposed on the surface of the adjustment slide rail, a base plate fixedly connected above the slider, a placement plate fixedly connected above the base plate, a threaded rod fixedly connected to one end of the placement plate, a connecting rod fixedly connected above the threaded rod, a clamping plate slidably engaging the surface of the threaded rod, a limit nut screwed to the other end of the surface of the threaded rod, a connecting plate fixedly connected below a set of the clamping adjustment assembly, the telescopic rod fixedly connected to the connecting plate, and a push tooth plate fixedly connected to one end of the base plate.

[0007] As a further embodiment of this utility model: a top plate is fixedly installed above the upright, a top slide rail is fixedly installed at the middle position below the top plate, an electric sliding seat is slidably connected below the top slide rail, an electric telescopic rod is fixedly connected below the electric sliding seat, and a pressure block is fixedly installed below the electric telescopic rod.

[0008] As a further improvement of this utility model: the surface of the fixing frame is provided with a through groove, and two sets of the clamping and adjusting components are slidably arranged above the adjusting slide rail.

[0009] As a further embodiment of this utility model: the connecting plate passes through the through groove opened on the surface of the fixing frame, and the connecting plate is fixedly connected to the base plate provided below the clamping and adjusting assembly.

[0010] As a further embodiment of this utility model: the adjusting gear meshes with the pusher plate, the first cylinder drives the telescopic rod, and the telescopic rod pushes the connecting plate to drive a set of clamping and adjusting components to slide above the adjusting slide rail.

[0011] As a further embodiment of this invention: one set of clamping and adjusting components drives the adjusting gear to rotate via the pusher plate, and the adjusting gear pushes the pusher plate of another set of clamping and adjusting components, causing the other set of clamping and adjusting components to move relative to each other above the adjusting slide rail, and the limiting nut restricts the sliding of the clamping plate.

[0012] As a further embodiment of this utility model: a pressure sensor is provided inside the pressure block, the electric sliding seat drives the electric telescopic rod to slide below the top slide rail, and the pressure block is located above the clamping and adjusting assembly.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In this invention, the clamping adjustment component adopts a mechanical locking structure of threaded rod and clamping plate, combined with a bidirectional adjustment mechanism of gear linkage push plate driven by longitudinal cylinder, which can realize the longitudinal manual flexible locking of the sample and the transverse double-group symmetrical synchronous clamping, effectively adapting to the stable fixation requirements of samples of different sizes.

[0015] The pressure-sensing indenter, combined with the displacement feedback of the electric telescopic rod, ensures accurate and reliable hardness test data through real-time pressure monitoring and synchronous calculation of indentation depth. The multi-position movement capability of the electric sliding seat on the top slide rail enables multi-point hardness testing of different areas of the sample surface, improving test coverage and efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the hardness testing device for modified plastics described in this utility model;

[0017] Figure 2 This is a side view of the hardness testing device for modified plastics described in this utility model;

[0018] Figure 3 This is a schematic diagram of the adjusting gear in the hardness testing device for modified plastics described in this utility model;

[0019] Figure 4 This is a schematic diagram of the clamping and adjusting component in a hardness testing device for modified plastics according to the present invention.

[0020] In the diagram: 1. Fixed frame; 2. First cylinder; 3. Telescopic rod; 4. Adjusting gear; 5. Adjusting slide rail; 6. Clamping and adjusting assembly; 7. Upright rod; 8. Top plate; 9. Top slide rail; 10. Electric sliding seat; 11. Electric telescopic rod; 12. Pressure block; 61. Slider; 62. Base plate; 63. Placement plate; 64. Threaded rod; 65. Connecting rod; 66. Clamping plate; 67. Limit nut; 68. Connecting plate; 69. Push tooth plate. Detailed Implementation

[0021] 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.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will be described below based on its overall structure.

[0023] Reference Figures 1 to 4 In this embodiment of the present invention, a hardness testing device for modified plastics includes: a fixed frame 1, a first cylinder 2 installed at one lower end of the fixed frame 1, and a telescopic rod 3 fixed to the side of the first cylinder 2; a rotatable adjusting gear 4 installed at the upper middle position of the fixed frame 1, and an adjusting slide rail 5 fixed at one end of the gear 4; two sets of clamping and adjusting components 6 symmetrically arranged on the slide rail; each set of clamping and adjusting components 6 includes a slider 61, a base plate 62, a placement plate 63, a threaded rod 64, a clamping plate 66, and a limiting nut 67; wherein the threaded rod 64 is vertically fixed to one end of the placement plate 63, the clamping plate 66 is slidably sleeved on the surface of the threaded rod 64, and the lateral clamping adjustment is achieved by rotating the limiting nut 67; a pusher plate 69 is fixedly connected below the base plate 62 of one set of clamping and adjusting components 6, and the pusher plate 69 meshes with the adjusting gear 4; the other set of clamping and adjusting components 6 is fixed to the telescopic rod 3 through a connecting plate 68.

[0024] A vertical pole 7 is installed on the side of the fixed frame 1, and a top plate 8 is fixed at the top of the pole. A top slide rail 9 is set below the top plate. An electric sliding seat 10 can slide along the top slide rail 9. An electric telescopic rod 11 is connected below the electric sliding seat 10, and a pressure block 12 is installed at its end. A pressure sensor is integrated inside the pressure block.

[0025] The operator places the modified plastic sample horizontally on the placement plate 63 of the clamping adjustment assembly 6, manually tightens the limiting nut 67, pushes the clamping plate 66 to slide along the threaded rod 64, and clamps the sample laterally. Then, the first cylinder 2 is activated, driving the telescopic rod 3 to push the connecting plate 68, which in turn drives a set of clamping adjustment assemblies 6 to slide along the adjusting slide rail 5. During this process, the pusher plate 69 meshes with the adjusting gear 4. After the gear rotates, it drives another set of clamping adjustment assemblies 6 to slide in the opposite direction, realizing the symmetrical synchronous movement of the two sets of clamping assemblies and completing the adaptive clamping of the sample.

[0026] The electric sliding seat 10 is activated via the control panel, moving along the top slide rail 9 to directly above the sample testing area. The electric telescopic rod 11 drives the pressure block 12 to press down at a uniform speed, contacting the sample surface. The pressure sensor inside the pressure block 12 collects pressure data in real time. When the pressure reaches the preset threshold, the system records the displacement of the electric telescopic rod 11, i.e., the indentation depth, and calculates the hardness value by combining the pressure data.

[0027] If multiple tests are required, the electric sliding seat 10 can move the pressure block 12 to other testing positions to repeat the above steps. Finally, the test data is output through the display screen or external interface to generate a hardness distribution report.

[0028] The working principle of this utility model is as follows:

[0029] After starting the equipment, the operator places the modified plastic sample to be tested on the surface of the placement plate 63 of the clamping and adjusting assembly 6. By rotating the limiting nut 67, the position of the clamping plate 66 on the threaded rod 64 is adjusted, thereby clamping and fixing the sample laterally. At this time, the first cylinder 2 drives the telescopic rod 3 to extend and retract, pushing the connecting plate 68 to drive the clamping and adjusting assembly 6 connected to it to slide along the adjusting slide rail 5. The push tooth plate 69 of this assembly then drives the adjusting gear 4 to rotate. Through the gear meshing action, the push tooth plate 69 of another set of clamping and adjusting assemblies 6 moves in the opposite direction, realizing the automatic synchronous adjustment of the distance between the two sets of clamping assemblies, and completing the longitudinal positioning and clamping of the sample. Then, the electric sliding seat 10 moves along the top slide rail 9 to directly above the clamped sample. The electric telescopic rod 11 drives the pressure block 12 to press down at a uniform speed to contact the sample surface. The pressure sensor inside the pressure block 12 collects the contact pressure data in real time. When the pressure value reaches the preset hardness detection threshold, the system calculates the indentation depth through the displacement of the electric telescopic rod 11 and automatically generates the hardness detection result by combining the pressure sensor data.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A hardness testing device for modified plastics, characterized in that, Include: The fixed frame (1) is fixedly provided with a first cylinder (2) at the lower end, the first cylinder (2) is fixedly connected with a telescopic rod (3) on the side, the fixed frame (1) is rotatably connected with an adjusting gear (4) at the upper middle position, the fixed frame (1) is fixedly provided with an adjusting slide rail (5) at the upper end, the adjusting slide rail (5) is slidably connected with a clamping adjusting assembly (6) on the upper side, and the fixed frame (1) is provided with a vertical rod (7) on the side.

2. The hardness testing apparatus for modified plastics as claimed in claim 1, wherein The clamping adjusting assembly (6) includes a sliding block (61) slidably arranged on the surface of the adjusting slide rail (5), a bottom plate (62) fixedly connected above the sliding block (61), a placing plate (63) fixedly connected above the bottom plate (62), a threaded rod (64) fixedly connected at one end above the placing plate (63), a connecting rod (65) fixedly connected above the threaded rod (64), a clamping plate (66) slidably connected on the surface of the threaded rod (64), and a limiting nut (67) screwed at the other end of the threaded rod (64). A group of clamping adjusting assemblies (6) are fixedly connected with a connecting plate (68) below, the telescopic rod (3) is fixedly connected with the connecting plate (68), and the bottom plate (62) is fixedly connected with a push gear plate (69) at one end below.

3. The hardness testing apparatus for modified plastics as claimed in claim 1, wherein The vertical rod (7) is fixedly provided with a top plate (8) on the upper side, the top plate (8) is fixedly provided with a top slide rail (9) at the lower middle position, the top slide rail (9) is slidably connected with an electric sliding seat (10) below, the electric sliding seat (10) is fixedly connected with an electric telescopic rod (11) below, and the electric telescopic rod (11) is fixedly provided with a pressing block (12) below.

4. The hardness testing apparatus for modified plastics as claimed in claim 2, wherein The surface of the fixed frame (1) is provided with a through groove, and two groups of clamping adjusting assemblies (6) are slidably arranged on the upper side of the adjusting slide rail (5).

5. The hardness testing apparatus for modified plastics as claimed in claim 4, wherein The connecting plate (68) penetrates through the through groove formed on the surface of the fixed frame (1), and the connecting plate (68) is fixedly connected with the bottom plate (62) arranged below a group of clamping adjusting assemblies (6).

6. The hardness testing apparatus for modified plastics as claimed in claim 2, wherein The adjusting gear (4) and the push gear plate (69) are meshed with each other, the first cylinder (2) drives the telescopic rod (3), the telescopic rod (3) drives the connecting plate (68) to drive a group of clamping adjusting assemblies (6) to slide on the adjusting slide rail (5).

7. The hardness testing apparatus for modified plastics as claimed in claim 6, wherein A group of clamping adjusting assemblies (6) drive the adjusting gear (4) to rotate through the push gear plate (69), the adjusting gear (4) drives the push gear plate (69) of another group of clamping adjusting assemblies (6), so that another group of clamping adjusting assemblies (6) move relatively on the adjusting slide rail (5), and the limiting nut (67) limits the sliding of the clamping plate (66).

8. The hardness testing apparatus for modified plastics as claimed in claim 3, wherein The pressing block (12) is provided with a pressure sensor in the inside, the electric sliding seat (10) drives the electric telescopic rod (11) to slide below the top slide rail (9), and the pressing block (12) is located above the clamping adjusting assembly (6).

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