CN203609721U

CN203609721U - Automatic injecting device driving sliding table with speed correcting function

Info

Publication number: CN203609721U
Application number: CN201320785624.XU
Authority: CN
Inventors: 吴海斌
Original assignee: Individual
Current assignee: Zhuhai Haijikj Technology Co Ltd
Priority date: 2013-12-04
Filing date: 2013-12-04
Publication date: 2014-05-28
Anticipated expiration: 2023-12-04

Abstract

The utility model discloses an automatic injecting device driving sliding table with a speed correcting function. The automatic injecting device driving sliding table with the speed correcting function comprises a base, a first fixing block, a second fixing block, a screw, a guide rod, a driving motor, a photoelectric sensor and an arithmetic unit. The front end and the rear end of the driving motor are provided with shafts, the front shaft is connected with the screw, and the rear shaft is fixedly provided with a coded disc; the edge of the coded disc is provided with slots; the light emitting end and the receiving end of the photoelectric sensor are arranged on both sides of the coded disc; the output end of the photoelectric sensor is connected with the arithmetic unit. The automatic injecting device driving sliding table with the speed correcting function is high in real-time performance, can highly precisely control the rotating speed of the motor and accordingly ensure accurate control of injecting volume of an injecting device, and is particularly applicable to products such as a micro injector pump.

Description

A kind of automated injection device with speed debugging functions is with driving slide unit

Technical field

This utility model relates to the actuation techniques of automated injection device, is specially a kind of for controlling the driving slide unit of syringe action.

Background technology

Drug injection is one for the treatment of means of commonly using clinically.Traditional manual injection length consuming time, waste of manpower, is difficult to control, and injection effect is not good.In order to address the above problem, there is on the market at present automatic injecting device.Usually, automated injection device is that the relative displacement between cylindrical shell and the push rod by controlling syringe realizes automatic injection function, and injection volume is controlled by the distance of relative displacement.The change of shift length utilizes step motor drive to realize, and ideally, motor can rotate exactly according to driving signal, thereby displacement is precisely controlled.But actual working condition is not all desirable, under reality, can often there is losing the problem of step, step-out in motor, in the time there are the problems referred to above, just can there is deviation in the cylindrical shell of its driving or push rod displacement, thereby cause reservoir quantity to produce deviation, possess in the product of specific (special) requirements at micro-injection pump etc., this is unallowed.

Summary of the invention

For the problems referred to above, this utility model provides a kind of automated injection device with speed correction with driving slide unit, it can detect the rotation situation of drive motors in real time, guarantee that motor is occurring losing in the situations such as step and can revise in time, the reservoir quantity of injection device can be precisely controlled.

This utility model for the technical scheme that its technical problem of solution adopts is:

There is the automated injection device of speed debugging functions with driving a slide unit, comprising: base; Be fixed on the first fixed block and the second fixed block on base, the first fixed block and the second fixed block relative spacing arrange; Be arranged on the screw rod between the first fixed block and the second fixed block; Be fixed between the first fixed block and the second fixed block and the guide rod parallel with screw rod, guide rod surface smoothing; Slide block, slide block is provided with the screw corresponding with screw rod and the guide hole corresponding with guide rod cross sectional shape, and slide block is installed on screw rod and guide rod by screw and guide hole respectively; Be arranged on the drive motors on the first fixed block, drive motors front-end and back-end shaft, the axle of front end is connected with screw rod, on the axle of rear end, is fixed with code-disc, on the edge of code-disc, has hole slot; The relatively-stationary photoelectric sensor of position and base, the be placed in both sides of code-disc of the luminous end of photoelectric sensor and receiving terminal, when the hole slot on code-disc rotates through the centre of luminous end and receiving terminal; Arithmetic element, the outfan of photoelectric sensor is connected with arithmetic element.

The beneficial effects of the utility model are: when this utility model work, code-disc is followed electric machine rotation, owing to there being the existence of hole slot, therefore the effect that code-disc produced conducting or stops through time between photoelectric sensor luminous end and receiving terminal, the output of photoelectric sensor constantly changes, and produces and continues pulse, and arithmetic element is calculated this umber of pulse and just can accurately know the actual speed of motor, this actual speed and target control speed are contrasted, as long as just there are differences and can revise rapidly.This utility model in real time degree is high, can control the rotating speed of motor accurately, thereby guarantee that the reservoir quantity of injection device can be precisely controlled, is particularly suitable for using on the products such as micro-injection pump.

Accompanying drawing explanation

Be further detailed below in conjunction with the drawings and specific embodiments:

Fig. 1 is structural representation of the present utility model.

The specific embodiment

This utility model is for automated injection device, specifically makes to produce displacement between the syringe cylindrical shell of syringe and syringe push rod, thereby realizes automatic injection function; This utility model can detect the duty of drive motors in real time, greatly improves the accuracy of electric machine rotation, the reservoir quantity offset issue of effectively avoiding motor to cause because of phenomenons such as step-outs.

With reference to Fig. 1, this utility model is mainly made up of base 1, the first fixed block 2, the second fixed block 3, screw rod 4, guide rod 5, slide block 6, drive motors 7, code-disc 8, photoelectric sensor 9 and arithmetic element etc.Shown in Fig. 1 is the basic structure that can realize this utility model function, and in the time of concrete application, the structure in figure can be carried out relevant configuration and optimization.

The first fixed block 2 and the second fixed block 3 are fixed on base 1, relative spacing setting between two fixed blocks.Screw rod 4 is installed between the first fixed block 2 and the second fixed block 3, and it can rotate.Guide rod 5 is fixed between two fixed blocks, parallel with screw rod 4, guide rod 5 surface smoothings, and the quantity of guide rod 5 can be 1, more than 2 or 2.Slide block 6 is provided with the screw corresponding with screw rod 4 and the guide hole corresponding with guide rod 5 cross sectional shapes, and slide block 6 is installed on screw rod 4 and guide rod 5 by screw and guide hole respectively.The effect of guide rod 5 is auxiliary fixing slide blocks 6, plays the effect of guiding and increase slide block 6 stationarities.In the embodiment in figure 1, guide rod 5 is circular columns strip.In order to make the guide effect of guide rod 5 better and play other extra effects, in other embodiments, guide rod 5 can be configured to the arc list structure that is wrapped in screw rod 4 outsides, is provided with opening below screw rod 4, and slide block 6 is wrapped in outside guide rod and extends to guide rod 5 inside from opening and is threaded onto screw rod 4 again.Make like this guide rod guide effect strengthen, in addition, this guide rod can also play the effect of hiding screw rod 4, effectively avoids outside pollutant to drop on screw rod, guarantees that injection device work continues normal.In addition, because screw rod is hidden, therefore the overall appearance of device is improved.

Drive motors 7 is arranged on the first fixed block 2, front-end and back-end shaft, the axle of front end is connected with screw rod 4, on the axle of rear end, be fixed with code-disc 8, on the edge of code-disc 8, have hole slot, when drive motors 7 is worked, can rotate by drive screw 4 on the one hand, can drive on the other hand code-disc 8 to rotate simultaneously.

Photoelectric sensor 9 is relative with base 1 fixing, its luminous end and receiving terminal are placed in respectively the both sides of code-disc 8, the centre of process luminous end and receiving terminal when hole slot on code-disc 8 rotates, in the time that hole slot is in the middle of luminous end and receiving terminal, the straight-through receiving terminal of light that luminous end sends, photoelectric sensor output first signal, when hole slot transfers, code-disc 8 is during by light path obstruction between luminous end and receiving terminal, photoelectric sensor output and the diverse secondary signal of secondary signal.Suppose that first signal is low level, secondary signal is high level, and along with the rotation of code-disc, the signal of photoelectric sensor output can switch by continuous low and high level, forms continuous impulse so.

Arithmetic element, for detection of the pulse signal of photoelectric sensor output, is accurately calculated the rotation situation of motor based on pulse signal.In Fig. 1 and not shown arithmetic element, the function of this arithmetic element can utilize the control module of automated injection device to realize.

When this utility model work, first control centre sends pulse command control motor rotation speed V1, in the time of electric machine rotation, drive code-disc rotation, the effect that code-disc produces conducting or stops during by photoelectric sensor, conducting is 0, stop to be 1, by calculating the umber of pulse of code-disc rotation, thereby calculate the actual speed V2 of motor.In theory, V1=V2, when V2 and V1 are when variant, by the V1 of next circle of single-chip microcomputer correction, increases the umber of pulse of losing step because of a upper circle, makes the meansigma methods of final V2 meansigma methods close to V1.

Embodiment of the present utility model is not restricted to the described embodiments, as long as it reaches technique effect of the present utility model with essentially identical means, all should belong to protection domain of the present utility model.

Claims

1. there is the automated injection device of speed debugging functions with driving a slide unit, it is characterized in that comprising:

Base;

Be fixed on the first fixed block and the second fixed block on base, the first fixed block and the second fixed block relative spacing arrange;

Be arranged on the screw rod between the first fixed block and the second fixed block;

Be fixed between the first fixed block and the second fixed block and the guide rod parallel with screw rod, guide rod surface smoothing;

Slide block, slide block is provided with the screw corresponding with screw rod and the guide hole corresponding with guide rod cross sectional shape, and slide block is installed on screw rod and guide rod by screw and guide hole respectively;

Be arranged on the drive motors on the first fixed block, drive motors front-end and back-end shaft, the axle of front end is connected with screw rod, on the axle of rear end, is fixed with code-disc, on the edge of code-disc, has hole slot;

The relatively-stationary photoelectric sensor of position and base, the be placed in both sides of code-disc of the luminous end of photoelectric sensor and receiving terminal, when the hole slot on code-disc rotates through the centre of luminous end and receiving terminal;

Arithmetic element, the outfan of photoelectric sensor is connected with arithmetic element.