CN206026800U - High -pressure syringe and injection head thereof - Google Patents
High -pressure syringe and injection head thereof Download PDFInfo
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- CN206026800U CN206026800U CN201620580729.5U CN201620580729U CN206026800U CN 206026800 U CN206026800 U CN 206026800U CN 201620580729 U CN201620580729 U CN 201620580729U CN 206026800 U CN206026800 U CN 206026800U
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- cylinder
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- injection head
- push rod
- pressure
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Abstract
The utility model discloses a high -pressure syringe and injection head thereof, including transmission, pressure measurement and chuck, pressure measurement includes a base section of thick bamboo and foil gage sensor group, a base section of thick bamboo includes hollow barrel, sets up before the barrel respectively, the back both ends and with communicating chuck fixed plate of barrel and motor fixed plate, the chuck sets up with fixed needle cylinder on the chuck fixed plate, foil gage sensor group fixes at the barrel, and transmission is including the push rod that is located a base section of thick bamboo, during operation, push rod forward propulsion make the barrel atress tensile on applying and acting on the barrel for the pressure in the cylinder, and foil gage sensor group produces deformation and exports the corresponding signal of telecommunication along with the tensile of barrel. Compare in present pass through before the push rod, the rear end sets up to exist and moves the pressure sensor that the wire connects and come the pressure measurement, this scheme is placed the strain -ga(u)ge transducer on the base section of thick bamboo in for pressure measurement does not receive the size restriction of the first space of injection, more can avoid causing the risk of pressure detection inefficacy because of the wire trouble.
Description
Technical field
This utility model belongs to armarium instrument field, more particularly to a kind of high pressure injector and its injection head.
Background technology
Pressure detecting is one of critical function of high pressure injector, by detection accurately injection pressure and injection parameters
Arrange, the risk that Drug Leakage and supporting consumptive material problem produce injury can be reduced.Detect in most of high pressure injectors at present
The structure of injection pressure mainly arranges a rigid pressure transducer in the push rod front end of high pressure injector or rear end.But
It is that this structure is since it is desired that the wire of movement, causes breakdown of conducting wires rate to increase, or be difficult to reality to the less injection head in space
It is existing.
Utility model content
The main technical problems to be solved in the utility model is to provide a kind of high pressure injector and its injection head, to solve
Pressure transducer is located at into push rod front end or rear end in prior art so that carrying out when injection pressure is detected, needing mobile leading
Line, causes breakdown of conducting wires rate to increase and increase the technical problem of space requirement.
For solving above-mentioned technical problem, this utility model provides a kind of injection head, including actuating device, pressure-detecting device
And chuck；The pressure-detecting device includes pedestal cylinder and strain-ga(u)ge transducer group, and the pedestal cylinder includes hollow cylinder, divides
The chuck fixed plate for not being arranged at the forward and backward two ends of the cylinder and communicating with the cylinder and motor fixing plate；The chuck sets
Put in the chuck fixed plate to fixedly mount syringe；The strain-ga(u)ge transducer group is fixed on the cylinder, and which includes
At least one strain-ga(u)ge transducer；The actuating device includes push rod, and the push rod is located in the pedestal cylinder；During work, institute
Stating push rod and pushing ahead the pressure being applied to inside syringe and act on makes cylinder stress stretching, the strain on the cylinder
Piece sensor group produces deformation with the stretching of the cylinder and exports the corresponding signal of telecommunication.
In a kind of embodiment of this utility model, the strain-ga(u)ge transducer is mounted on the centre position of the cylinder.
In a kind of embodiment of this utility model, the strain-ga(u)ge transducer group includes at least two strain-ga(u)ge transducers.
In a kind of embodiment of this utility model, the strain-ga(u)ge transducer group includes two strain-ga(u)ge transducers, described
Two strain-ga(u)ge transducers are separately positioned in the symmetric position of the cylinder both sides.
In a kind of embodiment of this utility model, also including sliding shoe and the axis of guide, the sliding shoe is located at the push rod
On, and sliding shoe is provided with through hole, the axis of guide is passed through from the through hole of the sliding shoe, and two ends are separately fixed at the electricity
In machine fixed plate and chuck fixed plate.
In a kind of embodiment of this utility model, the actuating device also includes ball screw, described ball screw one end
It is fixedly connected into the pedestal cylinder with described push rod one end；The ball screw drives the push rod to be applied to when pushing ahead
Pressure inside syringe is acted on the cylinder, and the strain-ga(u)ge transducer stress and deformation simultaneously exports the corresponding signal of telecommunication.
In a kind of embodiment of this utility model, the cylinder internal diameter is adapted with the push rod external diameter.
In a kind of embodiment of this utility model, also including processor, the processor is to the strain-ga(u)ge transducer group
The signal of telecommunication of output is processed.
Further, this utility model additionally provides a kind of high pressure injector, including controller and injection as above
Head；The controller is connected with the injection head.
In a kind of embodiment of this utility model, also including control station, the control station is connected with the controller.
The beneficial effects of the utility model are：
This utility model provides a kind of high pressure injector and its injection head, including actuating device, pressure-detecting device and
Chuck；Pressure-detecting device includes pedestal cylinder and strain-ga(u)ge transducer group, and pedestal cylinder includes hollow cylinder, is respectively arranged at cylinder
The forward and backward two ends of body and the chuck fixed plate that communicates with cylinder and motor fixing plate；Chuck is arranged in chuck fixed plate with fixation
Syringe is installed；Strain-ga(u)ge transducer group is fixed on cylinder, and which includes at least one strain-ga(u)ge transducer；Actuating device includes pushing away
Bar, push rod are located in pedestal cylinder；During work, push rod is pushed ahead the pressure being applied to inside syringe and is acted on and make on cylinder cylinder
Stress is stretched, and strain-ga(u)ge transducer group produces deformation with the stretching of cylinder and exports the corresponding signal of telecommunication.Lead to prior art
Cross and one rigid pressure sensor that there is mobile wire connection is set in push rod front end or rear end compare detecting injection pressure,
By strain-ga(u)ge transducer is fixed on pedestal cylinder, pedestal cylinder stress stretches the length for causing strain-ga(u)ge transducer to this utility model
Degree be also elongated, and tensile deformation amount of the strain-ga(u)ge transducer in length than rigid pressure sensor tensile deformation amount more
Greatly, so as to reach lifted injection pressure accuracy of detection；Meanwhile, strain-ga(u)ge transducer is placed on pedestal cylinder so that pressure is examined
Survey device to be limited by injection head space size, to be more avoided that and the wind of pressure detecting failure is caused because of mobile breakdown of conducting wires
Danger.Additionally, strain-ga(u)ge transducer is fixed on pedestal cylinder carrying out the detection mode of pressure detecting so that simple installation and be easy to
Safeguard, so as to reduce installation cost and maintenance cost.
Description of the drawings
Fig. 1 is the double cylinder injection head schematic diagram that this utility model embodiment two is provided；
Fig. 2 is the single-needle injection head schematic diagram that this utility model embodiment three is provided；
Fig. 3 is the strain-ga(u)ge transducer group position view of A in Fig. 2 that this utility model embodiment three is provided；
Fig. 4 is the high pressure injector schematic diagram that this utility model embodiment six is provided.
Specific embodiment
Accompanying drawing is combined below by specific embodiment to be described in further detail this utility model.
Embodiment one：
This utility model provides a kind of injection head, and the injection head includes actuating device, pressure-detecting device and chuck；Its
In, pressure-detecting device includes pedestal cylinder and strain-ga(u)ge transducer group, and pedestal cylinder includes hollow cylinder, is respectively arranged at cylinder
Forward and backward two ends and the chuck fixed plate that communicates with cylinder and motor fixing plate, it should be understood that cylinder, chuck fixed plate and
Motor fixing plate three can be combined together by the form such as weld, being integrally formed, preferably by integrally formed mode general
Triplicity is got up；Chuck is arranged in chuck fixed plate to fixedly mount syringe；Strain-ga(u)ge transducer group is fixed on cylinder,
Which includes at least one strain-ga(u)ge transducer；Actuating device includes push rod, and push rod is located in pedestal cylinder；During work, push rod is forward
The pressure that propulsion is applied to inside syringe is acted on, and strain-ga(u)ge transducer is produced with the stretching of cylinder
Raw deformation simultaneously exports the corresponding signal of telecommunication.Additionally, injection head also includes power set, power set are fixed with actuating device, are
Actuating device provides driving force；The power set include motor and encoder, and motor can be ultrasound electric machine, motor, straight
Stream motor, servomotor etc., encoder are located on motor to feed back the rotation situation of motor.
Further, injection head has single-needle injection head and many syringe injection head two types, and many syringe injection heads are
Adaptive adjustment is carried out based on double cylinder injection head in structure to improve pressure measurement precision and injection efficiency, this practicality is new
Type is illustrated by taking single-needle injection head and double cylinder injection head two types as an example.Accordingly, the actuating device in injection head
Two kinds of structures are also classified into, include push rod, ball screw, bearing and shaft coupling for the actuating device of single-needle；For double cylinder
Actuating device include push rod, ball screw, bearing and reduction box.For the actuating device of single-needle, motor passes through shaft coupling
Fix with ball screw one end, the ball screw other end is fixedly connected into pedestal cylinder with push rod one end, then the push rod other end
Pedestal cylinder is passed, is fixedly connected with the piston into inside syringe；Wherein, pedestal cylinder guiding push rod is run on fixed-direction, is kept away
Exempt to produce swing by a relatively large margin in the other direction, and pedestal cylinder internal diameter is more than push rod external diameter, but the difference of the two internal-and external diameter
Less guiding effect is better.For the actuating device of double cylinder, motor is fixedly connected with ball screw one end by reduction box, separately
One end is similar with the actuating device of single-needle, repeats no more here.
Additionally, being provided with chuck in chuck fixed plate, syringe is fixed by chuck, and between chuck and chuck fixed plate
General plug envelope is provided with, to reduce sliding friction and prevent liquid leakage in injection head.Then, rotary head is fixed with pedestal cylinder
Connecting plate, is provided with rotary head on rotary head connecting plate, by rotary head control whole injection head with the horizontal -60 ° to+
Rotate in the range of 120 °, so as to facilitate injection head to carry out suction medicine, aerofluxuss and liquid medicine injection to syringe.
Further, the loading process concrete analysis of injection head is as follows：Actuating device is connected with the piston in syringe,
When actuating device is driven to syringe direction by power set to be advanced, band piston is moved together, so as to realize aerofluxuss and note
The process penetrated, meanwhile, actuating device is transferred a driving force on the piston inside syringe, when medicinal liquid is squeezed, will just be driven
Dynamic action is to inside syringe so that syringe passes through forward to reducing the pressure inside syringe.Installed due to syringe and fixed
In chuck, chuck is fixedly connected with chuck fixed plate, and the pressure is also applied in chuck fixed plate accordingly, forces chuck solid
Fixed board has the trend for being stretched with syringe forward.Additionally, cylinder is also fixed together with chuck fixed plate, or cylinder and chuck
Fixed plate is integrally formed, and cylinder is provided with least one strain-ga(u)ge transducer so that cylinder with chuck fixed plate forward
Stretching, also produces tensile deformation accordingly, so that the strain-ga(u)ge transducer being pasted onto on cylinder produces stretcher strain, so that it is defeated
Go out voltage signal, reach the purpose of detection injection pressure.It should be appreciated that the strain-ga(u)ge transducer includes but is not limited to electricity
Resistive strain-ga(u)ge transducer or photoelectricity strain-ga(u)ge transducer, it is preferable that pressure measurement is carried out using resistance strain plate sensor；Together
When, strain-ga(u)ge transducer group is preferably provided in the centre position of cylinder, it is highly preferred that in the middle of cylinder and monosymmetric position
Put and be respectively provided with least one strain-ga(u)ge transducer so that avoid when actuating device is pushed ahead in cylinder because left and right is shaken
The problem that pendulum causes pressure measurement precision relatively low occurs；Or only at least one is being respectively provided with the symmetrical position in cylinder both sides
Strain-ga(u)ge transducer, is not limited to cylinder centre position, distinguishes preferably in cylinder centre position and on monosymmetric position
One strain-ga(u)ge transducer is set.
Embodiment two：
On the basis of embodiment one, the present embodiment additionally provides a kind of injection head, base of the injection head in embodiment one
An axis of guide is increased on plinth, and the axis of guide two ends are fixedly connected with motor fixing plate and chuck fixed plate, and are preferably led
It is parallel to each other to axle with pedestal cylinder, the axis of guide equally may also function as the effect of channeling direction.Additionally, the pressure measurement of the injection head is former
Reason is similar with embodiment one, therefore the present embodiment is no longer described in detail, and now its concrete structure is illustrated：
Double cylinder injection head schematic diagram shown in Figure 1.In Fig. 1, push rod 109 is provided with sliding shoe, on sliding shoe
It is provided with a through hole, it is preferable that sliding shoe is located at one end that push rod 109 is fixedly connected with the positioning of ball screw 117 so that push rod
109 moving range is larger, and then 109 other end of push rod is sealed in the middle of 119 and chuck 120 from chuck fixed plate 111, general plug successively
It is passed into syringe to be fixedly connected with the piston.Additionally, being equipped with motor fixing plate 104 and chuck fixed plate 111 for solid
Determine the hole position at 110 two ends of the axis of guide, the axis of guide 110 passes through sliding shoe, two ends to be separately fixed in the hole position, and fills with transmission
Put (i.e. ball screw 117 and push rod 109) to be parallel to each other, therefore, push rod 109 is transported along the axial direction of the axis of guide 110 with sliding shoe
It is dynamic, make push rod 109 avoid the occurrence of the swing in other directions in running as far as possible.It should be understood that logical on sliding shoe
Bore dia should be reduced as far as possible with 110 difference in diameter of the axis of guide, so as to preferably control the swing in the other direction of push rod 109.
Further, sliding shoe is provided with light barrier, and light barrier coordinates the mobile model for limiting push rod 109 with limit switch
Enclose.Wherein, limit switch installing plate 107 is provided with limit switch, all the way two limit switches of actuating device correspondence, near motor
The limit switch of fixed plate 104 is rear limit switch, is front limit switch near the limit switch of chuck fixed plate 111.Should
It is understood by, position relationship of the limit switch on limit switch installing plate 107 includes but is not limited to above-mentioned set-up mode, as long as
The effect for limiting actuating device moving range is reached, other set-up modes still belong to the scope of this utility model protection.Then,
The two ends of limit switch installing plate 107 are fixed and are connected with the top of motor fixing plate 104 and the top of chuck fixed plate 111 respectively
Connect, preferred limit switch installing plate 107 is arranged on top in two actuating devices, and parallel with actuating device.When motor 101
During operation, reduction box 121 is driven, and makes ball screw 117 rotate and drive push rod 109 and sliding shoe to move forward, corresponding to keep off
Mating plate is also moved forward, and when light barrier is run at rear limit switch, processor will detect the state of limit switch and become
Change, with should light barrier run to front limit switch when, motor 101 can it is out of service, illustrate that injecting liquid drug is finished or injected
To preset dose, detection process is consistent with rear limit switch, repeats no more here.Further, since motor is provided with encoder
125, encoder 125 will read motor 101 the speed of service and directional information, and by read information transmission to processor at
Reason.
Further, as one end of push rod 109 in actuating device is provided with sliding shoe, on sliding shoe, it is provided with light barrier again,
And light barrier needs to use cooperatively with limit switch, therefore the movement locus along sliding shoe are provided with opening on the cylinder of pedestal cylinder
122, facilitate sliding shoe to follow push rod 109 to move back and forth.The size of opening 122 is not particularly limited, and can enter according to the actual requirements
Row setting.It should be understood that the axis of guide 110 is arranged on above cylinder, preferably overlap with shell portion or misaligned, so
The perforate of sliding shoe is preferably provided near the side of the axis of guide 110 afterwards, facilitates the axis of guide 110 to pass through.
Embodiment three：
On the basis of embodiment one or two, the injection head that the present embodiment is provided is single-needle injection head, and the injection head is only
Containing a pedestal cylinder, all the way actuating device and a set of power set, wherein, power set include motor, and actuating device includes
Push rod, ball screw, bearing and shaft coupling.Pressure measuring principle in the principle and embodiment one or two of injection head detection injection pressure
Unanimously, the present embodiment is repeated no more.As shown in Fig. 2 injection head includes motor 101, shaft coupling 115, rotary shaft rack 126, plumbing arm
Rotary shaft 127, plumbing arm rotary head 128.Rotary shaft rack 126 is located between motor 101 and pedestal cylinder, and is set on rotary shaft rack 126
Have a through hole, 127 one end of plumbing arm rotary shaft is fixed through the through hole of rotary shaft rack 126 by modes such as screws, the other end with
Plumbing arm rotary head 128 is fixedly connected, by the control injection head of plumbing arm rotary head 128 in the range of with the horizontal -60 ° to+120 °
Rotate, so as to facilitate injection head to carry out suction medicine, aerofluxuss and liquid medicine injection to syringe.Then, ball screw and bearing pass through bearing
Pressing plate is fixed, and ball screw one end is fixed with motor 101 by shaft coupling 115, and the other end penetrates pedestal cylinder and push rod
It is fixed；Motor 101 is fixed with pedestal cylinder by rotary shaft rack 126 and bearing plate.Additionally, being additionally provided with limit on single-needle injection head
Bit switch installing plate, is respectively equipped with a forward and backward limit switch on limit switch installing plate, wherein, front limit switch is near folder
Head fixed plate, rear limit switch is near motor fixing plate.Additionally, the power set of the injection head pass through shaft coupling with actuating device
Connection, and between power set and pedestal cylinder, adopt gripper shoe or motor support post to fix.When motor is rotated forward, motor is by connection
Axle device is connected with ball screw, drives ball screw to rotate, then ball screw drive push rod, sliding shoe and light barrier together to
Front propulsion, realizes the detection to injecting liquid drug pressure.
Further, as shown in figure 3, Fig. 3 is the enlarged drawing of A in Fig. 2, the figure is to arrange strain-ga(u)ge transducer on pedestal cylinder
Particular location schematic diagram.In figure, pedestal cylinder includes cylinder 123, motor fixing plate and chuck fixed plate, and three is integrated into
Type.Two strain-ga(u)ge transducers are provided with cylinder 123, and as shown in FIG., another should for one of strain-ga(u)ge transducer 124
Become the opposite side that piece sensor is located at cylinder 123, and it is symmetrical with 124 position of strain-ga(u)ge transducer in figure, and 123 both sides of cylinder are equal
The purpose for being provided with strain-ga(u)ge transducer is, when push rod is pushed ahead, it is impossible to which push rod is completely secured will not swing, if
Only strain-ga(u)ge transducer 124 is provided with 123 side of cylinder, when push rod swings so that accuracy of detection is reduced, so as to affect
Piezo-effect.Therefore, strain-ga(u)ge transducer is equipped with 123 both sides of cylinder, to improve pressure measurement precision.It should be understood that should
Become piece sensor and can be arranged on pedestal cylinder optional position, preferably be to be located on cylinder 123 and be located at mid portion.
Example IV：
On the basis of embodiment one or two, the injection head that the present embodiment is provided is double cylinder injection head, and the injection head contains
There are two pedestal cylinders, two-way actuating device and two sets of power set, the principle and embodiment one or two of its detection injection pressure
In pressure measuring principle it is consistent, the present embodiment is also repeated no more.The present embodiment is that double cylinder is injected with three difference of embodiment
Head is made up of two single-needle injection heads, to realize double cylinder co-injection to improve work efficiency.Additionally, continuing with referring to figure
1, the power set of double cylinder injection head include motor 101, and actuating device includes ball screw 117, push rod 109,116 and of bearing
Reduction box 121.Motor 101 is fixed with 117 one end of ball screw by reduction box 121, drives ball screw 117 to rotate, then
Ball screw 117 drives push rod 109, sliding shoe and light barrier to push ahead and realize pressure measurement.Wherein, reduction box 121 is arranged on base
To fix ball screw 117 and bearing 116 on seat cylinder, motor 101 is fixed on pedestal cylinder by reduction box 121.
Further, four corners of the limit switch installing plate 107 of double cylinder injection head are equipped with a limit switch
(being rear limit switch near motor fixing plate, be front limit switch near chuck fixed plate), to limit two sets of transmissions
The range of movement of device, its concrete principle refer to embodiment three.It should be appreciated that double cylinder injection head is noted in single-needle
Adaptive change is carried out on the basis of penetrating head so that the injection head energy normal work of two syringes, therefore, in single-needle injection head
On the basis of, also adaptability is adjusted to many syringe injection heads to improve efficiency, and its operation logic is substantially similar, also belongs to this
The scheme of embodiment protection.It is appreciated that the various as double cylinder injection head includes two sets of power set, it is corresponding just to include two
Individual motor, when needing to carry out injection pressure detection, can run two motors simultaneously, manipulate the pressure measurement simultaneously of two sets of actuating devices,
One of motor can also be only run, its corresponding actuating device pressure measurement is manipulated.
Embodiment five：
The present embodiment additionally provides a kind of injection head, and the injection head is equally applicable to 1 (China Patent Publication No. of patent documentation
204512028U, publication date 20150729) in power set, provide driving force by power set for actuating device, and then
Strain-ga(u)ge transducer is made to produce the deformation output signal of telecommunication.The present embodiment emphasis is to the injection using the power set in patent documentation
Head is illustrated, and its concrete operating principle is analyzed as follows：
Injection head includes that injecting fluid cylinder, motor fixing plate, chuck fixed plate, strain-ga(u)ge transducer, push rod and hydraulic pressure lives
Injection fluid cylinder two ends are integrally formed or are sealed setting by plug respectively with motor fixing plate and chuck fixed plate, and solid in motor
Fixed board opens up through hole where fixing with injection fluid cylinder, and the diameter of through hole is less than the internal diameter of injection fluid cylinder, solid in chuck in the same manner
Fixed board regularly just opens up a through hole less than injection cylinder bore with injection fluid cylinder, then arranges one in injection fluid cylinder
With the injection cylinder bore size identical hydraulic piston, the piston by inject fluid cylinder be divided near motor fixing plate first
Cavity and the second cavity near chuck fixed plate, preferably the first cavity and the isolation of the second cavity.Push rod one end passes through chuck
Through hole in fixed plate enters injection fluid cylinder, is fixedly connected with hydraulic piston, and the other end is fixedly connected with the piston in syringe, pin
Cylinder is fixed in chuck.The first hydraulic tube, preferably motor fixing plate and first is fixedly connected on the through hole of motor fixing plate
The connection of hydraulic tube prevents liquid leakage for being tightly connected, and affects pressure measurement precision.The hydraulic tube and a third-party hydraulic pressure dress
Put connection, for injection head in the first cavity liquid is provided, and then produce hydraulic pressure, promote hydraulic piston to advance.Additionally, second
Through hole is opened up on the corresponding injection fluid cylinder of cavity, and the second hydraulic tube is fixedly connected on the through hole, the hydraulic tube is equally with the
The hydraulic means connection of tripartite, the second cavity for injection head provide liquid.When liquid medicine injection is needed, liquid is from the first hydraulic pressure
Pipe enters the first cavity, and extruding hydraulic piston promotes push rod to the direction movement of chuck fixed plate to extrude medicinal liquid, and then gives syringe
It is internal to apply pressure, cause to inject the stretching of fluid cylinder stress, strain-ga(u)ge transducer is provided with due to injecting fluid cylinder so that foil gauge is passed
Sensor also corresponding stress and deformation, so that produce the signal of telecommunication；When medicinal liquid is drawn, liquid enters the second cavity from the second hydraulic tube,
Extruding hydraulic piston promotes push rod to move to motor fixing plate direction, extrudes the liquid of the first cavity, by the liquid of the first cavity
Extruding-injection fluid cylinder reaches the purpose for inhaling medicine.
Embodiment six：
A kind of high pressure injector is present embodiments provided, Fig. 4 is referred to, the high pressure injector includes injection head 30 and control
Device 10, controller 10 are may be provided in injection head frame with injection head 30.Wherein, injection head 30 includes processor, processor
The signal of telecommunication of foil gauge sensor group output is processed.Controller 10 is connected with injection head 30 by communication cable, is realized
Control to injection head 30.Additionally, the tray accessory installed in injection head frame can be used for operator's placing articles,
Castor (have strap brake castor and each two without brake caster) is installed on the base of injection head frame, makes the injection head frame can
Moved with any range indoors.Further, high pressure injector also includes control station 20, and control station 20 is passed through with controller 10
Cable connection, by the feedback of the information of controller 10 to control station 20, while control station 20 can be sent as human-computer interaction interface
Control instruction, passes to controller 10 by cable, so as to realize the control to high pressure injector.It is appreciated that the various this reality
Apply, preferably by cable
Connection.
Above content is with reference to specific embodiment further detailed description of the utility model, it is impossible to assert
It is of the present utility model to be embodied as being confined to these explanations.For this utility model person of an ordinary skill in the technical field
For, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all be considered as category
In protection domain of the present utility model.
Claims (10)
1. a kind of injection head, it is characterised in that including actuating device, pressure-detecting device and chuck；The pressure-detecting device
Including pedestal cylinder and strain-ga(u)ge transducer group, the pedestal cylinder includes hollow cylinder, is respectively arranged at the cylinder forward and backward two
The chuck fixed plate held and communicate with the cylinder and motor fixing plate；The chuck is arranged in the chuck fixed plate with solid
Dingan County fills syringe；The strain-ga(u)ge transducer group is fixed on the cylinder, and which includes at least one strain-ga(u)ge transducer；It is described
Actuating device includes push rod, and the push rod is located in the pedestal cylinder；
During work, the push rod is pushed ahead the pressure being applied to inside syringe and is acted on and makes the cylinder stress on the cylinder
Stretching, the strain-ga(u)ge transducer group produce deformation with the stretching of the cylinder and export the corresponding signal of telecommunication.
2. injection head as claimed in claim 1, it is characterised in that the strain-ga(u)ge transducer is mounted on the centre of the cylinder
Position.
3. injection head as claimed in claim 1 or 2, it is characterised in that the strain-ga(u)ge transducer group should comprising at least two
Become piece sensor.
4. injection head as claimed in claim 3, it is characterised in that the strain-ga(u)ge transducer group includes two foil gauges sensings
Device, described two strain-ga(u)ge transducers are separately positioned in the symmetric position of the cylinder both sides.
5. injection head as claimed in claim 1 or 2, it is characterised in that also including sliding shoe and guide post, the sliding shoe sets
On the push rod, and sliding shoe is provided with through hole, and the guide post is passed through from the through hole of the sliding shoe, and two ends are solid respectively
It is scheduled on the motor fixing plate and chuck fixed plate.
6. injection head as claimed in claim 1 or 2, it is characterised in that the actuating device also includes ball screw, the rolling
Ballscrew one end is fixedly connected into the pedestal cylinder with described push rod one end；The ball screw drives the push rod to push away forward
It is applied to the pressure inside syringe to act on the cylinder when entering, the strain-ga(u)ge transducer stress and deformation simultaneously exports corresponding
The signal of telecommunication.
7. injection head as claimed in claim 1 or 2, it is characterised in that the cylinder internal diameter is adapted with the push rod external diameter.
8. injection head as claimed in claim 1 or 2, it is characterised in that also including processor, the processor is to the strain
The signal of telecommunication of piece sensor group output is processed.
9. a kind of high pressure injector, it is characterised in that including controller and the injection head as described in any one of claim 1-8；
The controller is connected with the injection head.
10. high pressure injector as claimed in claim 9, it is characterised in that also including control station, the control station and the control
Device connection processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620580729.5U CN206026800U (en) | 2016-06-15 | 2016-06-15 | High -pressure syringe and injection head thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620580729.5U CN206026800U (en) | 2016-06-15 | 2016-06-15 | High -pressure syringe and injection head thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206026800U true CN206026800U (en) | 2017-03-22 |
Family
ID=58313251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620580729.5U Expired - Fee Related CN206026800U (en) | 2016-06-15 | 2016-06-15 | High -pressure syringe and injection head thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206026800U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114070127A (en) * | 2021-10-12 | 2022-02-18 | 南京航达超控科技有限公司 | Large-torque and high-precision ultrasonic motor with self-protection function and implementation mode thereof |
-
2016
- 2016-06-15 CN CN201620580729.5U patent/CN206026800U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114070127A (en) * | 2021-10-12 | 2022-02-18 | 南京航达超控科技有限公司 | Large-torque and high-precision ultrasonic motor with self-protection function and implementation mode thereof |
| US11764705B2 (en) | 2021-10-12 | 2023-09-19 | Nuaa Super Control Technology Co., Ltd. | High-torque and high-precision ultrasonic motor with self-protection function and implementation mode thereof |
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Granted publication date: 20170322 Termination date: 20210615 |