CN-224231671-U - Positioning device for melting point instrument

Abstract

The utility model discloses a positioning device for a melting point instrument, which belongs to the technical field of positioning of the melting point instrument, wherein the upper end of a movable material containing table is connected with a first telescopic device through a fixed block, the first telescopic device is connected with a positioning clamp through an angle adjusting bracket, the outer end of the positioning clamp is connected with a positioning end through a rotating piece, and the lower end of the positioning clamp is provided with a second telescopic device connected with the positioning end. The locating clamp and the end head cooperatively clamp materials, so that stability and accuracy of melting point testing are ensured. The telescopic device is flexible in matching, and the testing efficiency is improved. The angle adjusting bracket allows adjustment according to requirements, and device adaptability is enhanced. Ball and parallel slide rail design, cooperation remove flourishing material platform, realize that the material is accurate to be placed, promote test accuracy. The hydraulic device is accurately adjusted through the height adjusting table, so that the hydraulic device meets the testing requirements of different melting points, and the practicability and the flexibility of the hydraulic device are improved. The design of the connecting side blocks enables the position adjustment of the movable part to be flexible, and the operation convenience is improved.

Inventors

• WAN JINHAI
• LI YONGLEI
• LI HE
• MENG HAO

Assignees

• 吉林市合润化工有限责任公司

Dates

Publication Date

20260512

Application Date

20250422

Claims (6)

1. 1. The utility model provides a locating device for melting point appearance, includes frame (1), control button (2), protection casing (3), hydraulic means (4), high adjustment platform (5) and instrument feeding mechanism (6), control button (2) are located the front end of frame (1), and hydraulic means (4) are installed on frame (1) through protection casing (3), instrument feeding mechanism (6) are installed on hydraulic means (4) through high adjustment platform (5), adjust the height of instrument feeding mechanism (6) through hydraulic means (4), wherein ball screw subassembly (8), slide rail (7) are installed respectively to the inside and outside of frame (1), and the spout has been seted up to the upper end lateral part of frame (1), install connecting seat (9) on the mobile station of ball screw subassembly (8), mobile material holding platform (11) are installed to the upper end of slide rail (7), and connecting seat (9), mobile material holding platform (11) are connected through connecting side piece (10), drive mobile material holding platform (11) along slide rail (7) through ball screw subassembly (8); The upper end of movable material containing table (11) is connected with first telescoping device (13) through fixed block (12), and first telescoping device (13) are connected with locating clip (15) through angle adjustment support (14), the outer end of locating clip (15) is connected with location end (16) through the rotating member, and the lower extreme of locating clip (15) is equipped with second telescoping device (17) of being connected with location end (16), realizes the centre gripping location through locating clip (15), location end (16).
2. 2. The positioning device for the melting point instrument according to claim 1, wherein the two sliding rails (7) are fixed on the machine base (1) through bolts, a screw of the ball screw assembly (8) is designed in parallel with the two sliding rails (7), the ball screw assembly (8) is fixed on the inner wall of the machine base (1) through bolts, and the connecting seat (9) is connected with a moving table of the ball screw assembly (8) through bolts.
3. 3. The positioning device for the melting point instrument according to claim 2, wherein the connecting side block (10) is fixed with the movable material containing table (11) and the connecting seat (9) through bolts, and the connecting side block (10) moves along the upper sliding groove of the machine base (1).
4. 4. A positioning device for a melting point apparatus according to claim 3, wherein the machine base (1) and the protective cover (3) are fixed by bolts, the hydraulic device (4) is an electric push rod or a hydraulic cylinder, the hydraulic device is fixed on the protective cover (3) by bolts, and the height adjusting table (5) is fixed on the telescopic end of the hydraulic device (4) by bolts.
5. 5. The positioning device for the melting point instrument according to claim 4, wherein the fixed block (12) is fixed on the movable material containing table (11) through a bolt, the angle adjusting bracket (14) comprises two brackets and a rotating shaft, the rotating shaft is connected with the two brackets, one bracket is connected with the fixed block (12), the other bracket is connected with the positioning clamp (15) and the first telescopic device (13), and the first telescopic device (13) stretches and contracts to drive the two positioning clamps (15) to expand or contract to realize clamping and positioning operation.
6. 6. The locating device for the melting point instrument according to claim 5, wherein the second telescopic device (17) is fixed at the lower end of the locating clamp (15) through a bolt, an anti-slip gasket is arranged on the side wall of the locating end head (16), and the second telescopic device (17) stretches and drives the locating end head (16) to rotate, so that clamping and locating operations are further achieved.

Description

Positioning device for melting point instrument Technical Field The utility model relates to the technical field of positioning of a melting point instrument, in particular to a positioning device for the melting point instrument. Background The melting point apparatus is an apparatus designed according to the melting point detection method prescribed in pharmacopoeia for measuring the melting point of a substance. The melting point is the temperature at which a substance equilibrates with solid and liquid states at atmospheric pressure. When the crystalline substance is heated to a certain temperature, the crystal starts to change from a solid state to a liquid state, and the measured temperature is the melting point of the substance. The melting point instrument realizes temperature program control by utilizing an electronic technology, and digital display of primary melting and final melting. The platinum resistor with linear correction is used as a detection element, and a rapid initial temperature setting and a multi-gear alternative linear temperature rising rate are realized by using an electronic circuit. In addition, the instrument also adopts a capillary tube specified by pharmacopoeia as a sample tube, and the melting process of the sample in the capillary tube is observed through a high-magnification magnifying glass, so that the observation result is clear and visual. The positioning device for a melting point apparatus does present some challenges in practical applications, particularly when handling small sample tubes. Because the sample tube is thinner, when the single positioning mechanism is used for clamping the sample tube, the problem of offset of the sample tube at the opening end of the positioning mechanism is easy to occur. Such offset can lead to inaccurate positioning, thereby affecting the accuracy and reliability of the melting point determination. In particular, single-shot positioning mechanisms are typically designed to accommodate a range of sample tube sizes. However, when the sample tube is too small and its diameter is close to or less than the tolerance range of the positioning mechanism, the sample tube is prone to slipping or shifting at the open end. Such deflection may result from insufficient holding force of the positioning mechanism on the small sample tube or from small vibrations and oscillations of the sample tube during the holding process. In addition, factors such as the material, shape, and surface condition of the sample tube may also affect the clamping effect of the positioning mechanism. For example, if there is oil, dust or scratches on the surface of the sample tube, the friction between the positioning mechanism and the sample tube may be reduced, thereby increasing the risk of misalignment. Disclosure of utility model The utility model mainly aims to provide a positioning device for a melting point instrument, which can effectively solve the problems in the background technology. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: The locating device for the melting point instrument comprises a machine base, a control button, a protective cover, a hydraulic device, a height adjusting table and an instrument feeding mechanism, wherein the control button is positioned at the front end of the machine base; The inner part and the outer part of the machine base are respectively provided with a ball screw assembly and a sliding rail, the side part of the upper end of the machine base is provided with a sliding groove, the mobile platform of the ball screw assembly is provided with a connecting seat, the upper end of the sliding rail is provided with a mobile material containing platform, the connecting seat and the mobile material containing platform are connected through a connecting side block, and the mobile material containing platform is driven to move along the sliding rail through the ball screw assembly; The upper end of the movable material containing table is connected with a first telescopic device through a fixed block, the first telescopic device is connected with a positioning clamp through an angle adjusting bracket, the outer end of the positioning clamp is connected with a positioning end through a rotating piece, the lower end of the positioning clamp is provided with a second telescopic device connected with the positioning end, and clamping and positioning are realized through the positioning clamp and the positioning end. In a further alternative scheme, the two sliding rails are fixed on the machine base through bolts, a screw rod of the ball screw assembly is parallel to the two sliding rails, the ball screw assembly is fixed on the inner wall of the machine base through bolts, and the connecting seat is connected with a moving table of the ball screw assembly through bolts; In a further alternative scheme, the connecting side blocks are fixed with the movable material containing t