CN217966737U

CN217966737U - DMA double cantilever beam clamp positioning device

Info

Publication number: CN217966737U
Application number: CN202222490401.2U
Authority: CN
Inventors: 甄建斌; 伊佳佳
Original assignee: Taiyuan Institute of Technology
Current assignee: Shanghai Dapingtang Chemical Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2022-12-06
Anticipated expiration: 2032-09-20

Abstract

The utility model relates to a DMA double cantilever beam anchor clamps positioner, including setting up the support on the anchor clamps base, be equipped with the slide rail on the support, be equipped with the slider on the slide rail, be equipped with the screw on the slider, be equipped with the lead screw on the screw, the lead screw both ends are passed through the bearing and are installed on the support, lead screw one end is connected with the knob, the slider upper end is equipped with the mounting panel along the perpendicular to lead screw direction, the mounting panel both ends are equipped with the long slab respectively, the long slab front end is equipped with the locating plate, be equipped with the scale on the support. Has the advantages of reasonable structural design, positioning of the sample, high positioning precision, simple and convenient operation and the like.

Description

DMA double cantilever beam clamp positioning device

The technical field is as follows:

the utility model relates to a developments thermal mechanical analyzer technical field, concretely relates to can carry out the two cantilever beam anchor clamps positioner of DMA of centering location to the sample.

Background art:

dynamic thermomechanical analyzers (DMA) are used exclusively to characterize material properties as a function of temperature, time, frequency, and stress. DMA is an important means for testing the mechanical properties of the material, and can test the mechanical properties of a sample such as stretching, bending, shearing, compression and the like. Different fixtures need to be installed on the DMA in different deformation modes, for example, when studying the water disinfection performance of the nanofiber membrane, the DMA and the dual-cantilever fixture thereof need to be adopted to test the bending performance of the nanofiber membrane in consideration of that the nanofiber membrane is continuously impacted by water flow in the water filtration process, so that the nanofiber membrane is bent and deformed. The DMA product produced by METTLER TOLEDO was used in our laboratory.

As shown in fig. 4, the structure of the existing double-cantilever clamp is schematically illustrated, the existing double-cantilever clamp mainly includes a clamp base, the clamp base is provided with a tip pressing component (fixed) for clamping two ends of a sample and a movable pressing component (movable) arranged in the middle, and the movable pressing component moves up and down during testing. According to the test requirements, the sample is perpendicular to the pressing assemblies, and the sample is located in the middle of each pressing assembly, so that the obtained test result can be accurate and reliable. However, the existing double-cantilever clamp is not provided with a positioning component, and only rough positioning can be carried out by visual observation when a test is carried out, so that adverse effects are undoubtedly brought to sample test, and the reproducibility of a test result cannot be realized.

The above description is included in the technical knowledge of the inventors, and does not necessarily constitute a prior art.

The utility model has the following contents:

the utility model aims to solve the problem that prior art exists, provide the two cantilever beam anchor clamps positioner of DMA, have structural design reasonable, fix a position, positioning accuracy is high, easy and simple to handle advantage to the sample.

The utility model discloses an adopt following technical scheme to realize above-mentioned purpose:

DMA double cantilever beam fixture positioning device, including setting up the support on fixture base, be equipped with the slide rail on the support, be equipped with the slider on the slide rail, be equipped with the screw on the slider, be equipped with the lead screw on the screw, the lead screw both ends are passed through the bearing and are installed on the support, lead screw one end is connected with the knob, the slider upper end is equipped with the mounting panel along the perpendicular to lead screw direction, the mounting panel both ends are equipped with the rectangular plate respectively, the rectangular plate front end is equipped with the locating plate, be equipped with the scale on the support.

The support includes two L type landing legs that the interval set up, L type landing leg passes through the bolt-up on the anchor clamps base, L type landing leg upper end is equipped with the backup pad, be equipped with the slide rail in the backup pad.

The above technical scheme is adopted in the utility model, following beneficial effect can be brought:

through being equipped with the positioner of this application in one side of current anchor clamps support, guarantee not to influence the normal clamping work of two cantilever beam anchor clamps, utilize the position of lead screw transmission manual regulation locating plate simultaneously to according to the accurate regulation of scale, and then be favorable to improving the installation accuracy of sample.

Description of the drawings:

FIG. 1 is a schematic structural view of the positioning device of the present invention mounted on a double cantilever clamp;

FIG. 2 is a schematic view of the positioning device assembled with the fixture base;

FIG. 3 is a schematic view of the positioning device of the present invention;

FIG. 4 is a schematic structural view of a conventional dual cantilever clamp;

in the figure, 1, a support, 101, an L-shaped supporting leg, 102, a bolt, 103, a supporting plate, 2, a sliding rail, 3, a sliding block, 4, a screw, 5, a screw rod, 6, a bearing, 7, a knob, 8, a mounting plate, 9, a long plate, 10, a positioning plate, 11, a graduated scale, 12, a clamp base, 13, an end pressing component, 14, a middle pressing component, 15, a sliding groove, 16 and a sample are arranged.

The specific implementation mode is as follows:

in order to more clearly explain the overall concept of the present invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments.

In the present application, the terms "upper", "lower", "one end", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply the position of the indicated technical feature.

In the present invention, unless otherwise expressly stated or limited, the terms "provided", "disposed", "connected", "communicating", and the like are to be construed broadly, and for example, "provided" and "disposed" may be fixedly attached, detachably attached, or integrated; the connection may be direct connection or connection through an intermediate medium, and the communication means mainly gas circuit communication in the present application. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1-3, DMA double cantilever beam fixture positioning device, including setting up support 1 on fixture base 12, be equipped with slide rail 2 on the support 1, be equipped with slider 3 on the slide rail 2, be equipped with screw 4 on the slider 3, be equipped with lead screw 5 on the screw 4, install on support 1 through bearing 6 at 5 both ends of lead screw, 5 one end of lead screw is connected with

knob

7, 3 upper ends of slider are equipped with mounting panel 8 along the 5 directions of perpendicular to lead screw, 8 both ends of mounting panel are equipped with long slab 9 respectively, long slab 9 front end is equipped with locating plate 10, be equipped with scale 11 on the support 1. Through being equipped with the positioner of this application in one side of current anchor clamps support 12, guarantee not to influence the normal clamping work of two cantilever beam anchor clamps, utilize the manual position of adjusting locating plate 10 of lead screw transmission simultaneously to according to the accurate regulation of scale 11, and then be favorable to improving the installation accuracy of sample.

The support 1 comprises two L-shaped supporting legs 101 arranged at intervals, the L-shaped supporting legs 101 are fastened on a clamp base 12 through bolts 102, a supporting plate 103 is arranged at the upper end of each L-shaped supporting leg 101, and a sliding rail 2 is arranged on each supporting plate 103. The support 1 has simpler and more practical structural design and is convenient to install.

Instructions for use of the positioning device of the present application:

at first, the structure of the existing double-cantilever beam clamp is simply explained, the existing double-cantilever beam clamp comprises a clamp base 12, a sliding groove 15 is formed in the clamp base 12, two end pressing assemblies 13 are arranged on the sliding groove 15 at intervals, and a middle pressing assembly 14 is arranged at the center of the clamp base 12.

During the installation, set up the positioner of this application in spout 15 one side, slide rail 2 and lead screw 5 perpendicular to spout 15 set up, and two locating plate 10 symmetric distribution compress tightly 14 both sides at the middle part. The other side of the chute 15 usually needs to be provided with a temperature measuring device (the existing structure of the temperature measuring device is not shown).

When a sample is installed, firstly, the length and the width of the sample 16 are measured, the distance between the two end positioning assemblies 13 is properly adjusted according to the length (the existing fixture has a function), then the position of the positioning plate 10 is adjusted according to the width of the sample, for example, the sample width is L, the distance from the positioning plate 10 to the central line of the sliding groove 15 is L/2, the screw 5 is driven to rotate by the rotating knob 7, the screw 5 rotates to drive the sliding block 3 to move along the sliding rail 2, the position of the positioning plate 10 is further changed, and the positioning plate 10 is ensured to move to an accurate position by the graduated scale 11. The method comprises the following steps of firstly placing a sample 16 on an end portion pressing assembly 13 and a middle portion pressing assembly 14, then aligning the side edge of the sample 16 with a positioning plate 10, then fixing the sample 16 through screws on the end portion pressing assembly 13 and the middle portion pressing assembly 14, separating the positioning plate 10 from the sample through a reverse rotation knob 7 after the sample 16 is fixed, and finally performing a bending test.

The above-mentioned embodiment can not be regarded as right the utility model discloses the restriction of scope, to the technical person in this technical field, it is right the utility model discloses any alternative improvement or transform that the embodiment made all fall within the scope of protection of the utility model.

The parts of the present invention not described in detail are the known techniques of those skilled in the art.

Claims

DMA double cantilever beam anchor clamps positioner, its characterized in that, including setting up the support on the anchor clamps base, be equipped with the slide rail on the support, be equipped with the slider on the slide rail, be equipped with the screw on the slider, be equipped with the lead screw on the screw, the lead screw both ends are passed through the bearing and are installed on the support, lead screw one end is connected with the knob, the slider upper end is equipped with the mounting panel along the perpendicular to lead screw direction, the mounting panel both ends are equipped with the long slab respectively, the long slab front end is equipped with the locating plate, be equipped with the scale on the support.
2. The DMA double-cantilever clamp positioning device according to claim 1, wherein the support comprises two L-shaped legs arranged at intervals, the L-shaped legs are fastened on the clamp base through bolts, a support plate is arranged at the upper end of each L-shaped leg, and a slide rail is arranged on each support plate.