CN219809324U

CN219809324U - Magnetic damping device of rough repair wheel of pathological section machine

Info

Publication number: CN219809324U
Application number: CN202320559872.6U
Authority: CN
Inventors: 郑航; 范飞
Original assignee: Jinhua Craftek Instrument Co ltd
Current assignee: Jinhua Craftek Instrument Co ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-10-10
Anticipated expiration: 2033-03-15

Abstract

The utility model provides a magnetic force damping device of pathological section machine rough repair wheel, includes rotary encoder, encoder support, rotary encoder installs on the encoder support, rotary encoder's output shaft passes the encoder support and is connected with the rough repair wheel that sets up in encoder support one side and drive its pivoted, be provided with between rough repair wheel and the encoder support and produce magnetic force damped magnetic force structure to the rough repair wheel. The utility model adopts non-contact magnetic force to replace mechanical elastic device, which can avoid the problems of mechanical abrasion and elastic fatigue, thereby ensuring the quality of the slicer to be more reliable and the service life to be longer and more stable.

Description

Magnetic damping device of rough repair wheel of pathological section machine

Technical Field

The utility model belongs to the technical field of pathological microtome instruments, and particularly relates to a magnetic damping device of a rough repair wheel of a pathological microtome.

Background

In addition to the main slicing action, most of the pathological microtomes (hereinafter referred to as microtomes) have a rough cutting wheel on the left side for rapid horizontal advance and retreat of the instrument specimen holder and feeding control during rough cutting of wax block specimens. In particular to a current mainstream electromechanical integrated semiautomatic slicer, the horizontal feeding of a specimen holder is completed by a stepping motor, a rough repair wheel is changed into a rotary encoder or a pulse generator hand wheel by an original mechanical device, and pulse signals are generated by rotation to control the rotation of the stepping motor, so that an ideal specimen advancing and retreating effect is achieved. However, the spindle of the rotary encoder is very flexible and does not have a damping function, so that if a rough repair wheel is directly arranged on the spindle, the spindle can rotate too flexibly to control the required feeding amount of the specimen clamp, and accidents such as wax collapse and damage of specimens such as wax are caused. Therefore, the encoder spindle must have proper damping force during rotation to meet the precise control effect during advance and retreat or rough repair. If the mechanical damping devices such as the pressure spring, the elastic sheet and the friction plate are adopted, mechanical abrasion or elastic fatigue can be caused due to the frequent operation of the rough repair wheel for a long time, and the damping is weakened or even fails.

Disclosure of Invention

Aiming at the problems in the background technical introduction, the utility model aims to provide a magnetic damping device for a rough repair wheel of a pathological section machine, which can avoid the problems of mechanical abrasion and elastic fatigue, so that the quality of the section machine is more reliable, and the service life is longer and more stable.

The technical scheme adopted by the utility model is as follows:

the utility model provides a magnetic force damping device of pathological section machine rough repair wheel, includes rotary encoder, encoder support, rotary encoder installs on the encoder support, rotary encoder's output shaft passes the encoder support and is connected its pivoted rough repair wheel with setting up in encoder support one side, its characterized in that: a magnetic structure capable of generating magnetic damping for the rough repair wheel is arranged between the rough repair wheel and the encoder bracket. The utility model adopts non-contact magnetic force to replace mechanical elastic device, which can avoid the problems of mechanical abrasion and elastic fatigue, thereby ensuring the quality of the slicer to be more reliable and the service life to be longer and more stable.

Further, the magnetic structure comprises a magnetic chuck and a movable wheel, wherein the magnetic chuck is arranged on the encoder support, the movable wheel is sleeved on an output shaft of the rotary encoder and is arranged on the rough repair wheel, and a gap is formed between the magnetic chuck and the movable wheel and attractive to each other. The utility model generates magnetic attraction to the movable wheel through the magnetic chuck, thereby generating a certain damping force, and leading the rough repair wheel not to be too flexible when rotating, thereby leading the pulse signal of the encoder to be out of control.

Further, the magnetic chuck is circumferentially arranged on the encoder support around the axis of the output shaft of the rotary encoder.

Further, the magnetic chuck is a permanent magnet.

Further, a circle of neodymium-iron-boron permanent magnets are circumferentially arrayed on the magnetic chuck.

Alternatively, the magnetic chuck is an electromagnet.

Further, the magnetic chuck and the encoder bracket are of an integrated structure or embedded in the encoder bracket.

Further, the movable wheel is made of a magnetic force sensitive material, such as a steel piece, and also can be a permanent magnet.

Further, the movable wheel and the rough repair wheel are of an integrated structure.

Further, a bearing is arranged between the movable wheel and the radial direction of the magnetic chuck. The utility model makes the pressure of magnetic force adsorption act on the bearing, thus producing better damping effect.

Compared with the prior art, the utility model has the remarkable advantages that: the non-contact magnetic force is adopted to replace a mechanical elastic device, so that the problems of mechanical abrasion and elastic fatigue can be avoided, and the quality of the slicing machine is more reliable, and the service life is longer and more stable.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

fig. 3 is an exploded view of the present utility model.

In the figure: 1-rotary encoder, 2-encoder support, 3-magnetic chuck, 4-neodymium iron boron permanent magnet, 5-plane bearing, 6-running wheel, 7-rough repair wheel.

Detailed Description

The utility model will be further illustrated with reference to the following specific examples, without limiting the utility model to these specific embodiments. It will be appreciated by those skilled in the art that the utility model encompasses all alternatives, modifications and equivalents as may be included within the scope of the claims.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Referring to fig. 1-3, the present embodiment provides a magnetic damping device for a rough repair wheel of a pathological microtome, which comprises a rotary encoder 1 and an encoder bracket 2, wherein the rotary encoder 1 is installed on the encoder bracket 2, an output shaft of the rotary encoder 1 passes through the encoder bracket 2 and is connected with a rough repair wheel 7 which is arranged on one side of the encoder bracket 2 and drives the encoder bracket 2 to rotate, and a magnetic structure capable of generating magnetic damping for the rough repair wheel is arranged between the rough repair wheel 7 and the encoder bracket 2. The utility model adopts non-contact magnetic force to replace mechanical elastic device, which can avoid the problems of mechanical abrasion and elastic fatigue, thereby ensuring the quality of the slicer to be more reliable and the service life to be longer and more stable. The rotary encoder 1 of the present embodiment may be an electronic device capable of generating a pulse signal when the hand wheel pulse generator or the like rotates.

The magnetic structure of the embodiment comprises a magnetic chuck 3 and a movable wheel 6, wherein the magnetic chuck 3 is fixedly arranged on the encoder bracket 2 and is circumferentially arranged on the encoder bracket 2 around the axis of the output shaft of the rotary encoder 1. Of course, the magnetic chuck 3 may be integrally formed with the encoder bracket 2, or may be embedded in the encoder bracket 2. The magnetic chuck 3 can be a permanent magnet or an electromagnet, and in this embodiment, a circle of neodymium-iron-boron permanent magnets 4 are arranged on the magnetic chuck 3 in a circumferential array.

In this embodiment, the movable wheel 6 is fixedly mounted on the rough repair wheel 7 and sleeved on the output shaft of the rotary encoder 1, the movable wheel 6 is made of a magnetically sensitive material, such as a steel piece, or may be a permanent magnet, and the rough repair wheel 7 is injection molded. Of course, the movable wheel 6 and the rough wheel 7 may be an integral structure, i.e. the rough wheel 7 is directly made of a magnetically sensitive material, such as a steel member.

In this embodiment, a gap is provided between the magnetic chuck 3 and the movable wheel 6, and the movable wheel 6 and the magnetic chuck 3 have attractive force, that is, the movable wheel 6 keeps a proper distance from the magnetic chuck 3, so that attractive force is generated but the movable wheel is not in contact with the magnetic chuck. According to the utility model, the magnetic chuck 3 is used for generating magnetic attraction to the movable wheel 6, so that a certain damping force is generated, and the rough repair wheel 7 is not too flexible in rotation, so that the pulse signal of the encoder is prevented from being out of control.

In this embodiment, a plane bearing 5 is disposed between the movable wheel 6 and the magnetic chuck 3 in the radial direction. The present utility model causes the pressure of the magnetic force adsorption to act on the plane bearing 5, thus producing a better damping effect. Of course, other types of bearings are possible, such as rolling bearings, or bearings are not installed, so that the rotary encoder itself is provided with a bearing for bearing the pressure of magnetic attraction, and the effect of magnetic damping is also achieved.

Claims

1. The utility model provides a magnetic force damping device of pathological section machine rough repair wheel, includes rotary encoder, encoder support, rotary encoder installs on the encoder support, rotary encoder's output shaft passes the encoder support and is connected its pivoted rough repair wheel with setting up in encoder support one side, its characterized in that: a magnetic structure capable of generating magnetic damping for the rough repair wheel is arranged between the rough repair wheel and the encoder bracket; the magnetic structure comprises a magnetic chuck and a movable wheel, wherein the magnetic chuck is arranged on the encoder support, the movable wheel is sleeved on an output shaft of the rotary encoder and is arranged on the rough repair wheel, and a gap is formed between the magnetic chuck and the movable wheel and attractive to each other.

2. The magnetic damping device of a rough repair wheel of a pathological microtome according to claim 1, wherein: the magnetic chuck is arranged on the encoder bracket around the circumferential direction of the axis of the output shaft of the rotary encoder.

3. The magnetic damping device of a rough repair wheel of a pathological microtome according to claim 2, wherein: the magnetic chuck is a permanent magnet.

4. A magnetic damping device for a rough repair wheel of a pathological microtome according to claim 3, wherein: and a circle of neodymium-iron-boron permanent magnets are circumferentially arrayed on the magnetic chuck.

5. The magnetic damping device of a rough repair wheel of a pathological microtome according to claim 2, wherein: the magnetic chuck is an electromagnet.

6. A magnetic damping device for a rough wheel of a pathological microtome as claimed in any one of claims 3 to 5, wherein: the magnetic chuck and the encoder bracket are of an integrated structure or embedded in the encoder bracket.

7. The magnetic damping device of a rough repair wheel of a pathological microtome according to claim 1, wherein: the movable wheel is made of a magnetic force sensitive material.

8. The magnetic damping device for a rough repair wheel of a pathological microtome of claim 7, wherein: the movable wheel and the rough repair wheel are of an integrated structure.

9. The magnetic damping device of a rough repair wheel of a pathological microtome according to claim 1, wherein: and a bearing is arranged between the movable wheel and the radial direction of the magnetic chuck.