CN211704658U

CN211704658U - Reciprocating shaking device of grid of mammary machine

Info

Publication number: CN211704658U
Application number: CN202020084849.2U
Authority: CN
Inventors: 吴梅娟; 张维博; 李中兵
Original assignee: Shenzhen Microprofit Medical Equipment Co Ltd
Current assignee: Shenzhen Microprofit Medical Equipment Co Ltd
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-10-20
Anticipated expiration: 2030-01-15

Abstract

The utility model discloses a reciprocating shaking device of a grid of a mammary machine, which comprises a motor arranged on a motor fixing piece, a cylindrical cam connected with an output shaft of the motor, a closed space curve groove arranged on the excircle of the cylindrical cam, a cam ejector rod with one end arranged in the space curve groove of the cylindrical cam and forming a sliding pair with the space curve groove, and a switching cross rod with the other end connected with the cam ejector rod; when the motor rotates, the switching cross rod moves in a reciprocating mode. The utility model provides a motor of traditional scheme just reverse the high loss that causes and the difficult scheduling problem of maintaining of crank link mechanism structure complicacy. The motor does not need to rotate forwards and backwards, the grid can shake in a reciprocating mode, the service life of the motor is prolonged, the transmission structural part is simple, the overall cost is low, the debugging is convenient, the transmission is stable, and the maintenance is more convenient.

Description

Reciprocating shaking device of grid of mammary machine

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a reciprocal shake device that is used for mammary gland machine wire grid.

Background

The grid for the mammography can remove the influence of scattered rays on the radiography, but artifacts often remain in the mammography shooting process, so a method of shaking the grid back and forth is adopted in the industry to solve the problem. There are currently two main solutions: one is a servo mechanism, a screw rod is driven to rotate positively and negatively through positive and negative rotation of a servo motor, a nut is sleeved on the screw rod, the screw rod rotates to drive the nut to do reciprocating linear motion, and the nut is connected with a grid to do reciprocating shaking; the other scheme is a crank-link mechanism, a motor drives the crank-link mechanism, the link mechanism is connected with an adapter plate, the adapter plate drives a guide sleeve and a guide rail to move relatively, and the grid is fixed on the guide sleeve, so that the grid can shake in a reciprocating manner. According to the scheme I, the motor is large in loss and easy to damage due to positive and negative rotation of the motor. And the scheme II has a complex structure, high debugging difficulty and high relative cost.

Therefore, it is an urgent need in the art to overcome the shortcomings of the conventional grid reciprocating shaking device of the breast machine, such as high cost, easy damage or complex structure.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the reciprocal shake device of grid of current mammary gland machine with high costs, fragile or the problem that the structure is complicated, provide a reciprocal shake device of mammary gland machine grid.

The utility model provides a reciprocating shaking device of a grid of a mammary machine, which comprises a motor arranged on a motor fixing piece, a cylindrical cam connected with an output shaft of the motor, a closed space curve groove arranged on the excircle of the cylindrical cam, and a cam ejector rod, wherein one end of the cam ejector rod is arranged in the space curve groove of the cylindrical cam and forms a sliding pair with the space curve groove, and the other end of the cam ejector rod is connected with a switching cross rod; when the motor shifts, the switching cross rod moves in a reciprocating mode. The switching crossbar can be used to connect the grids.

Furthermore, a bottom plate is arranged on the bottom surface of the motor fixing piece.

Further, a linear guide rail is arranged on the bottom plate and connected with the switching cross rod, so that the switching cross rod can move in a reciprocating mode.

Furthermore, the linear guide rail is connected with the switching cross rod through a groove sliding plate, and the linear guide rail is matched with the groove sliding plate to form a sliding pair.

When the cylindrical cam rotates, the closed space curve groove of the cylindrical cam surface can drive the cam mandril to do reciprocating linear motion parallel to the axis of the cylindrical cam. The axial length within one circle of the closed space curve groove is the maximum distance of the cam ejector rod in one-way movement, the cam ejector rod is fixed on a slide block on the linear guide rail through a switching transverse plate, the grid is fixed on the slide block on the linear guide rail through a switching plate, and the reciprocating motion of the cam ejector rod drives the switching transverse plate and the grid to shake in a reciprocating mode. The utility model can realize the reciprocating shaking of the grid by always keeping the motor rotating in one direction without positive and negative rotation; the cam ejector rod is made of steel, and the cylindrical cam is made of plastic steel, so that the mutual movement noise between the cam ejector rod and the cylindrical cam is small, and the cam ejector rod and the cylindrical cam have a self-lubricating effect.

The utility model overcomes the high loss problem that the motor of traditional scheme just reverses and causes has overcome defects such as the complicated difficult maintenance of crank link mechanism structure, the utility model discloses the motor need not just reversing to improve the life of motor, the simple whole of drive structure spare is with low costs, the debugging is convenient, the transmission is stable, the maintenance is also more convenient.

Drawings

Fig. 1 is a schematic view of the overall structure of the grid for connecting a mammary machine according to the present invention;

FIG. 2 is a right side elevational view of FIG. 1;

fig. 3 is a schematic perspective view of the cylindrical cam of the present invention;

fig. 4 is a schematic diagram of the orthographic projection of the cylindrical cam according to the present invention.

Detailed Description

The invention will be further described with reference to the following drawings and specific embodiments:

as shown in fig. 1 and fig. 2, for the utility model provides an embodiment of reciprocating shaking device of mammary machine grid, it includes motor mounting 2, locates motor 4 on motor mounting 2, and cylindrical cam 3 with the output shaft of this motor 4 locates the closed space curve recess 10 of this cylindrical cam 3 excircle, and the upper end of cam follower 5 is embedded in the space curve recess 10 of this cylindrical cam 3 to form the sliding pair of relative movement with this space curve recess 10. The lower end of the cam mandril 5 is in an L-shaped bending shape, the L-shaped bending part is connected with the switching cross rod 7, and the switching cross rod 7 is connected with the grid 8. The transverse length of the adapter rail 7 can be dimensioned to maintain a rigid connection with the grid 8 as required. When the motor 4 shifts, the cylindrical cam 3 is driven to rotate, and the cylindrical cam 3 can drive the switching cross rod 7 to reciprocate. In this embodiment, a bottom plate 1 with a slightly larger area is disposed on the bottom surface of the motor fixing member 2, so as to stably mount the reciprocating shaking device. The bottom plate 1 is provided with a linear guide rail 6, the linear guide rail is connected with a switching cross rod 7 through 2 sliding blocks 9, and the linear guide rail 6 and the sliding blocks 9 are matched to form a sliding pair, so that the switching cross rod 7 can move back and forth conveniently. The switching cross bar 7 is bent twice as shown in fig. 2. The upper part of the switching cross rod 7 is connected with the slide block 9 and the L-shaped bending connecting plate at the lower end of the cam mandril 5, and the lower part of the switching cross rod 7 is fixedly connected with the grid 8.

As shown in fig. 3 and 4, the structure of the cylindrical cam according to the present invention is shown. The excircle of the cylindrical cam 3 is provided with a closed space curve groove 10, namely the groove 10 forms a closed loop after surrounding a circle, so that when the motor 4 keeps rotating in the same direction, the cam mandril 5 can do reciprocating movement. The space curve grooves with different tracks are arranged, so that the cam mandril 5 can realize reciprocating movement with different speeds, namely variable-speed or uniform-speed reciprocating movement. The maximum distance of the reciprocating movement of the cam carrier rod 5 is the axial length within one circle of the closed space curve groove 10, and the axial length is shown as H in figure 4.

Referring to fig. 1, the motor 4 rotates to drive the cylindrical cam 3 to rotate, and the upper end of the cam post rod 5 moves to the extreme position in the right direction under the driving of the two side walls of the space curve groove 10 of the cylindrical cam 3. The motor 4 continues to rotate in the same direction to drive the cylindrical cam 3 to rotate in the same direction, and the cam mandril 5 moves reversely to the leftmost position. So as to reciprocate, the maximum distance of one pass is the axial distance between the leftmost side and the rightmost side of the space curve groove 10, namely the axial length H. Motor 4 is unchangeable to continuous rotation, through the utility model provides a reciprocating shaking device just can drive grid 8 left and right sides back and forth movement of mammary gland machine, when cam ejector pin 5's reciprocating motion's fast, the stroke is short-term, just makes grid 8 produce reciprocating shaking.

Various other modifications and changes may be made by those skilled in the art based on the above teachings and concepts, and all such modifications and changes are intended to fall within the scope of the appended claims.

Claims

1. A reciprocating shaking device of a grid of a mammary machine is characterized by comprising a motor arranged on a motor fixing piece, a cylindrical cam connected with an output shaft of the motor, and a closed space curve groove arranged on the excircle of the cylindrical cam, wherein one end of a cam ejector rod is arranged in the space curve groove of the cylindrical cam and forms a sliding pair with the space curve groove, and the other end of the cam ejector rod is connected with a switching cross rod; when the motor rotates, the switching cross rod moves in a reciprocating mode.

2. The reciprocating dithering apparatus of claim 1, wherein the bottom surface of the motor mount defines a floor.

3. The reciprocating shaking apparatus of claim 2, wherein the base plate is provided with a linear guide rail connected to the transit rail so that the transit rail can reciprocate.

4. A reciprocating whipping apparatus as defined in claim 3, wherein the linear guide is connected to the transfer rail by a grooved slide plate, the linear guide and the grooved slide plate cooperating to form a sliding pair.