CN110926775B - Device and method for testing performance of injector - Google Patents
Device and method for testing performance of injector Download PDFInfo
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- CN110926775B CN110926775B CN201911193679.XA CN201911193679A CN110926775B CN 110926775 B CN110926775 B CN 110926775B CN 201911193679 A CN201911193679 A CN 201911193679A CN 110926775 B CN110926775 B CN 110926775B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
The invention relates to a device and a method for testing the performance of an injector, wherein the testing device comprises a detection platform; the positioning seat is provided with positioning holes which extend in the front-back direction and can be used for positioning the injector; the sliding table can be arranged on the detection platform in a front-and-back movement manner; the sliding frame can move left and right and is arranged on the sliding table, and the sliding frame is provided with reset rods and pushing columns at intervals along the left and right directions; the pressure sensor is used for detecting a reset force value of the piston resetting backwards; the first sensor is used for sensing the position of the piston when the injection of the injector is finished; the second sensor is used for sensing whether the movable sleeve of the injector moves backwards in the piston resetting process and whether the movable sleeve of the injector pops up after the injection of the injector is finished; and the input end of the controller is connected with the pressure sensor and the first and second sensors, and the output end of the controller is connected with the first driving mechanism and the second driving mechanism so as to control the first driving mechanism and the second driving mechanism to work. The invention has the advantages of rapid test process and accurate test result, thereby being beneficial to improving the manufacturing precision of the injection device.
Description
Technical Field
The invention relates to detection equipment, in particular to equipment and a method for testing the performance of an injector.
Background
The most common mode of administration is by injection, for example intravenous, subcutaneous or intramuscular injection, with injection of syringes containing the drug typically being performed by trained medical personnel. However, in some situations, such as where a patient needs to inject a medication on a regular basis, it may be desirable for the patient to be able to use the syringe to self-administer or inject it by another individual. Devices have been developed that allow patients to self-inject and injection training devices that allow patients to simulate injection procedures that are performed in real life.
As shown in the automatic injection training device disclosed in the chinese utility model patent with the patent number CN201821209943.5 (publication number CN209149657U), the device includes a housing, an injection simulation component and an actuating component for driving the injection simulation component to move down to complete the needle insertion, a fixing frame, a movable sleeve, and a push rod capable of pushing the injection simulation component to move up and reset, wherein the fixing frame is positioned in the housing, and the injection simulation component and the actuating component are both arranged in the fixing frame; the movable sleeve is sleeved on the fixed frame, the lower end of the movable sleeve can extend out of the shell to be in contact with the skin, and the movable sleeve moves upwards relative to the fixed frame when being pressed by the skin, and the movable sleeve always has the tendency of moving downwards relative to the fixed frame under the action of an elastic piece.
As can be seen from the working process of the device disclosed in the specification, the injection running time of the injection simulation assembly (i.e. the piston) of the device, whether the movable sleeve is ejected after the injection is completed, the reset force of the piston when the push rod pushes the tube body of the injection simulation assembly to reset, and whether the movable sleeve moves upwards for a certain distance when the push rod pushes the tube body of the injection simulation assembly to reset are all important. In other words, in order to ensure the precision and safety of the injection device, it is necessary to introduce the supported injector parameters in the design process, and accurate injector parameters are provided, so that the precision of the injection device can be improved, and the harm of the patient caused by too much or too little input medicine can be avoided.
The piston of the injection training device is triggered by the movable sleeve to perform the injection process, and there is also an injector, as shown in fig. 9 and 11, which performs the injection action, i.e. the piston is operated by other triggering members, such as a button, to trigger the piston.
For the injectors or injection training devices with the above structures, no detection equipment capable of detecting performance parameters of the automatic injection devices exists at present.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a device for testing the performance of an injector, which can quickly and accurately detect the performance parameters of the injector, aiming at the current situation of the prior art.
The second technical problem to be solved by the present invention is to provide a testing method using the testing apparatus, which can quickly and accurately detect the performance parameters of the injector, in view of the current situation of the prior art.
In order to solve the first technical problem, the technical scheme adopted by the invention is as follows: a device for testing the performance of a syringe, comprising
A detection platform;
the positioning seat is arranged on the detection platform, and is provided with positioning holes which extend in the front-back direction and can be used for positioning the injector;
the sliding table is connected with the first driving mechanism and can be arranged on the detection platform in a front-and-back movement mode, and the sliding table is positioned on the front side of the positioning seat;
the sliding frame is connected with the second driving mechanism and is arranged on the sliding table in a left-right moving mode, the sliding frame is provided with a reset rod and a pushing column at intervals along the left-right direction, the reset rod is used for pushing a piston in the injector to move backwards and reset, the pushing column is used for pushing a movable sleeve in the injector to move backwards, and the reset rod and the pushing column extend forwards and backwards and face the positioning seat;
the pressure sensor is arranged on the sliding frame, connected with the reset rod and used for detecting a reset force value of the piston resetting backwards;
the first sensor is arranged on the detection platform and used for sensing the position of the piston when the injection of the injector is finished;
the second sensor is arranged on the detection platform and used for sensing whether the movable sleeve of the injector moves backwards in the piston resetting process and whether the movable sleeve of the injector pops up after the injection of the injector is finished;
and the input end of the controller is connected with the pressure sensor, the first sensor and the second sensor, and the output end of the controller is connected with the first driving mechanism and the second driving mechanism so as to control the first driving mechanism and the second driving mechanism to work.
Because syringes of different sizes may have different shapes and outer diameters, in order to be able to test syringes of different sizes, the positioning socket includes
The bottom plate is detachably arranged on the detection platform, and a first positioning groove extending from front to back is formed in the upper surface of the bottom plate;
the pressing plate can be detachably installed on the bottom plate, a second positioning groove corresponding to the first positioning groove is formed in the lower surface of the pressing plate, and the first positioning groove and the second positioning groove jointly form the positioning holes in the state that the bottom plate is connected with the pressing plate. During assembly, the bottom plate is installed on the detection platform, then the injector is positioned in the first positioning groove on the bottom plate, and the positioning seat is installed on the detection platform through a screw penetrating through the pressing plate and the bottom plate, so that the positioning of the injector is realized; the positioning seat can be detachably arranged on the rest stand, so that the proper positioning seat can be replaced to adapt to different injectors, and the universality of the testing equipment is improved.
The first sensor can be in various structures, and preferably comprises a transmitting optical fiber and a receiving optical fiber capable of receiving light of the transmitting optical fiber, wherein the transmitting optical fiber and the receiving optical fiber are oppositely arranged and are positioned at two sides of a moving path of the piston. The part located outside the plunger in the radial direction of the syringe is transparent so that light emitted from the transmitting optical fiber can be received by the receiving optical fiber when the plunger is not moved between the transmitting optical fiber and the receiving optical fiber, and the light emitted from the transmitting optical fiber is blocked by the plunger and cannot be received by the receiving optical fiber when the plunger is moved between the transmitting optical fiber and the receiving optical fiber, so that the plunger is detected by the first sensor.
The second sensor can have various structural forms, and preferably comprises a reflection type optical fiber displacement sensor and an amplifier for receiving signals of the reflection type optical fiber displacement sensor, the amplifier is connected with the input end of the controller, and the reflection type optical fiber displacement sensor is arranged on one side of the moving path of the movable sleeve. When the movable sleeve does not move to the reflection point of the reflection type optical fiber displacement sensor, the amplifier cannot receive signals or is lower than the set sensitivity value, and when the movable sleeve moves to the reflection point of the second sensor, the amplifier of the reflection optical fiber receives signals and is higher than the set sensitivity value, so that the second sensor detects the movable sleeve.
In order to facilitate the arrangement of the first sensor and the second sensor, the detection platform is also provided with
The mounting plate is positioned above the positioning seat, a first guide groove which extends along the front-back direction and is positioned right above the positioning hole is formed in the mounting plate, the first guide groove is used for the forward-backward movement of the transmitting optical fiber and the reflective optical fiber displacement sensor to be inserted in the first guide groove, and the reflective optical fiber displacement sensor is positioned in front of the transmitting optical fiber;
the placing frame is used for installing the positioning seat thereon, and a second guide groove which is positioned right below the positioning hole is arranged on the placing frame and is used for receiving the optical fiber to be inserted therein in a back-and-forth movement mode.
The first driving mechanism can have multiple structural forms, the structure is simple, the first driving mechanism comprises a first motor arranged on the detection platform, a first screw rod connected with the first motor in a driving mode, and a first connecting block in threaded connection with the first screw rod, the first connecting block is connected with the sliding table, and the first screw rod extends in the front-back direction. The first connecting block moves back and forth under the action of the first screw rod, so that the sliding table is driven to move back and forth.
The second driving mechanism can have various structural forms, and is simple in structure, the second driving mechanism comprises a second motor arranged on the sliding table, a first gear arranged at the output end of the second motor and a first rack arranged on the sliding table and meshed with the first gear, and the first rack extends along the left-right direction. When the second motor drives the first gear to rotate, the first rack moves leftwards, so that the sliding frame moves leftwards, and when the second motor rotates reversely, the first rack moves rightwards, so that the sliding frame moves rightwards, and the reset rod and the pushing column are alternately opposite to the injector through the left-right movement of the sliding frame, so that the piston or the movable sleeve is pushed.
When the piston of the injector is triggered by a button arranged on the injector instead of being directly triggered by a protective sleeve, a trigger mechanism capable of pressing the button needs to be arranged, specifically, the detection platform is also provided with a trigger mechanism capable of triggering the button on the injector for driving the piston to move forward, the trigger mechanism is positioned at the rear side of the positioning seat, the trigger mechanism comprises a third driving mechanism, a base which is connected with the third driving mechanism in a driving way so as to move back and forth relative to the detection platform and a trigger piece which is arranged on the base and can press the button, and the output end of the controller is connected with the third driving mechanism so as to control the third driving mechanism to work. The trigger piece is driven to change the position through the back and forth movement of the base, so that the button is triggered.
The third driving mechanism can have various structural forms, and preferably, the third driving mechanism comprises a third motor arranged on the detection platform, a third screw rod in driving connection with the third motor, and a third connecting block in threaded connection with the third screw rod, the third connecting block is connected with the base, and the third screw rod extends along the front-back direction. The third connecting block moves back and forth along the second sliding groove under the action of the third screw rod, so that the base is driven to move back and forth.
One of the structural forms of the trigger piece is as follows: the trigger piece is a push rod capable of pushing a button at the rear end of the injector to move forwards, and the push rod extends along the front-back direction. When the base moves forwards, the push rod moves forwards along with the base and pushes the button to move forwards, and the piston is pushed by the button to move forwards along with the button.
The other structural form of the trigger piece is as follows: the base is provided with a second rack extending along the front-back direction, a roll-over stand capable of turning towards the positioning seat is arranged above the base, a second gear meshed with the second rack is arranged on the roll-over stand, the trigger piece is a convex block capable of pressing a button on the peripheral wall of the syringe, and the convex block is arranged on the end face, facing the positioning seat, of the roll-over stand. When the base moves backwards, the turnover frame turns forwards until the button is pressed by the lug.
In order to ensure that the sliding table can be reset to an initial state, a first proximity switch for detecting whether the sliding table is reset to the initial state is arranged on the detection platform, and a first induction sheet which is in induction fit with the first proximity switch is arranged on the sliding table; in order to ensure that the sliding frame can be reset to the initial state, a second proximity switch for detecting whether the sliding frame is reset to the initial state is arranged on the sliding table, and a second induction sheet in induction fit with the second proximity switch is arranged on the sliding frame; in order to ensure that the base can reset to the initial state, the detection platform is provided with a third proximity switch for detecting whether the base resets to the initial state, the sliding table is provided with a third induction sheet which is in induction fit with the third proximity switch, and the first proximity switch, the second proximity switch and the third proximity switch are respectively connected with corresponding input ends of the controller.
In order to stop detection and give an alarm when the injector is detected abnormally, the detection platform is also provided with an emergency stop switch and an equipment reset switch which are connected with the input end of the controller, and an alarm device which is connected with the output end of the controller.
In order to solve the second technical problem, the invention adopts the following technical scheme: a test method of the test equipment is characterized by comprising the following steps:
(1) installing the injector to be tested which is in an injection completion state but not reset into the positioning hole of the positioning seat, wherein one end of the injector provided with the movable sleeve faces forwards, and the other end faces backwards, and then executing the step (2);
(2) manually debugging the positions of the first sensor and the second sensor to correspond to the specification of the injector to be tested, and then executing the step (3);
(3) setting parameters, manually inputting the parameters on the controller or calling the set parameters of the injector to be detected, which are stored on the controller, wherein the parameters comprise the number of times of detecting the injector to be detected, the interval time of two adjacent detections of the injector, the stroke of the sliding table moving back and forth, the stroke of the sliding frame moving left and right, the reset force value of the piston, the injection running time of the piston, the first sensitivity value of the movable sleeve when the piston is reset and the second sensitivity value of the movable sleeve popping up after the injection is finished, and then executing the step (4);
(4) confirming whether each part of the equipment is in an initial state, if so, executing the step (5), and if not, controlling each part to move to the initial state by the controller and then executing the step (5);
(5) the action of the first actuating mechanism of controller control, the distance that first actuating mechanism drive sliding stand backward movement set for, the release link promotes the piston that corresponds after stretching into the movable sleeve backward and moves to reseing, pressure sensor detects the reset force value of piston and sends the controller, the second sensor detects the movable sleeve and sends the controller with signal transmission when moving backward when leaving the second sensor when the piston resets, the controller judges according to the reset force value that records and the signal value that the second sensor response obtained: if the reset force value exceeds the set value or the signal value obtained by the sensing of the second sensor exceeds the set value of the first sensitivity value, the alarm device is started, the controller controls all the parts to stop working, the emergency stop switch is pressed after the fault reason is confirmed, the alarm is relieved, then the equipment reset switch is triggered manually, the controller controls all the parts to return to the initial state, and then the step (5) is executed; if the reset force value is within the set range and the signal value sensed by the second sensor does not exceed the set value of the first sensitivity value, executing the step (6);
(6) the controller controls first actuating mechanism drive sliding table and moves the distance of settlement forward, then the second actuating mechanism drive carriage moves the distance of settlement left side, it just faces the movable sleeve to move to promote the post after reaching the target, then first actuating mechanism drive sliding table moves the distance of settlement backward, promote the post and promote corresponding movable sleeve and move backward, when the sliding table moves backward to the distance of settlement, the piston is triggered and moves forward, the controller begins timing this moment, signal the controller when first sensor detects the piston, the controller stops timing, the controller judges according to this signal: if the injection running time of the piston exceeds a set value, starting an alarm device, controlling each part to stop working by a controller, pressing an emergency stop switch after confirming the fault reason, removing the alarm, manually triggering an equipment reset switch, controlling each part to return to an initial state by the controller, and then executing the step (5); if the injection running time is in the set range, executing the step (7);
(7) the controller controls the first driving mechanism to drive the sliding table to move forwards for a set distance, in the process, the pushing column is separated from the movable sleeve, the second sensor sends a signal to the controller when detecting the movable sleeve, and the controller judges according to a signal value sensed by the second sensor: if the signal value sensed by the second sensor exceeds the set value of the second sensitivity value, the movable sleeve is normally popped up, and the step (8) is executed; if the signal value sensed by the second sensor is lower than the set value of the second sensitivity value, the movable sleeve is not ejected normally, the alarm device is started, the controller controls all the parts to stop working, the emergency stop switch is pressed after the fault reason is confirmed, the alarm is relieved, then the equipment reset switch is triggered manually, the controller controls all the parts to return to the initial state, and then the step (5) is executed;
(8) after the set time interval is reached, returning to the step (4), executing the next detection, and circularly reciprocating until the set cycle times are finished; if the injectors pass the set test times, the injectors are qualified; otherwise, the product is not qualified.
When the piston of the injector is triggered by a button arranged on the injector instead of being directly triggered by a protective sleeve, a trigger mechanism capable of pressing the button needs to be arranged, a trigger mechanism capable of triggering the button on the injector for driving the piston to move forwards is also arranged on the detection platform, the trigger mechanism is positioned at the rear side of the positioning seat, the trigger mechanism comprises a third driving mechanism, a base which is connected with the third driving mechanism in a driving way so as to move forwards and backwards relative to the detection platform, and a trigger piece which is arranged on the base and capable of pressing the button, and the output end of the controller is connected with the third driving mechanism so as to control the third driving mechanism to work;
in the step (2), setting the back-and-forth movement stroke of the base; in the step (6), when the sliding table moves backwards to the set distance, the following conditions are added until the controller starts to time: the base is driven by the third drive mechanism to move forward or backward to a set distance, at which time the piston is triggered by the trigger.
Compared with the prior art, the invention has the advantages that: the testing equipment of the invention enables the sliding table to move back and forth by arranging the sliding frame, the sliding table, the pressure sensor, the first sensor and the second sensor, the sliding frame can move left and right relative to the sliding table, the sliding frame is provided with a reset rod for pushing the piston to move back and reset and a pushing column for pushing the movable sleeve to move back, thus the reset rod and the pushing column can move back and forth or left and right under the drive of the sliding frame and the sliding platform, thereby pushing the reset and injection of the piston and the action of the movable sleeve as required, simultaneously acquiring required signals to the controller through the pressure sensor, the first sensor and the second sensor, obtaining the conclusion whether each performance parameter of the injector is qualified or not after the analysis and the judgment of the controller, therefore, the test process of the invention is rapid and the test result is accurate, thereby being beneficial to improving the manufacturing precision of the injection device.
Drawings
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a partial schematic view of FIG. 1;
FIG. 3 is a schematic view of the structure of the sliding frame and the sliding table in FIG. 2;
FIG. 4 is a schematic view of the structure of FIG. 3 in another direction;
FIG. 5 is a schematic structural view of the rest stand and the positioning seat in FIG. 2;
FIG. 6 is an exploded view of FIG. 5;
FIG. 7 is a schematic structural view of the testing platform and the first driving mechanism of FIG. 2;
FIG. 8 is a schematic structural view of example 2 of the present invention;
FIG. 9 is a partial schematic view of FIG. 8;
FIG. 10 is a schematic structural view of the testing platform and the first and second driving mechanisms of FIG. 9;
FIG. 11 is a schematic structural view of a base and a trigger mechanism according to embodiment 3 of the present invention;
fig. 12 is a schematic structural view of the trigger mechanism in fig. 11.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
In the following description, it is to be understood that the terms "left and right", "front and back", "height", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations and positional relationships based on those shown in the drawings, and are used for simplicity of description only, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and that the disclosed embodiments of the invention may be arranged in different orientations, so these directional terms are used for illustration only and should not be construed as limiting.
Example 1
As shown in fig. 1 to 7, the apparatus for testing the performance of the injector of the preferred embodiment includes a chassis 1, a rest 2, a sliding table 3, a positioning seat 4, a sliding frame 6, a pressure sensor 611, a first driving mechanism 71, a second driving mechanism 72, a first sensor, and a second sensor.
As shown in fig. 1 and 2, the top wall of the case 1 is a detection platform 11, the front wall of the case 1 is provided with a touch display screen 12, the upper surface of the detection platform 11 is provided with a rest 2 and a slide table 3 located in front of the rest 2, the positioning seat 4 is detachably disposed on the rest 2, the positioning seat 4 is used for positioning the injector 51, the slide table 3 can move back and forth relative to the detection platform 11, the slide frame 6 can move left and right and is disposed on the slide table 3, and the slide frame 6 is provided with a reset rod 61 for pushing the piston to move back and reset and a pushing column 62 for pushing the movable sleeve 50 to move back.
As shown in fig. 5 and 6, the positioning seat 4 includes a bottom plate 41 and a pressing plate 42, the pressing plate 42 is disposed on the upper end surface of the bottom plate 41, the bottom plate 41 is detachably positioned on the upper surface of the detection platform 11 through four positioning columns, and the positioning seat 4 is detachably mounted on the detection platform 11 through screws penetrating through the pressing plate 42 and the bottom plate 41. The upper surface of the bottom plate 41 is provided with a first positioning groove 411 extending from front to back, the lower surface of the pressing plate 42 is provided with a second positioning groove 421 corresponding to the first positioning groove 411 and extending from front to back, the first positioning groove 411 and the second positioning groove 421 jointly form a positioning hole 43 under the state that the bottom plate 41 is connected with the pressing plate 42, the positioning hole 43 is used for positioning the injector 51, and after the positioning is completed, one end of the injector 51 provided with the movable sleeve 50 faces forwards and the other end faces backwards.
The positioning hole 43 may be provided in plurality on the positioning socket 4 in the left-right direction, and one syringe 51 may be positioned in each positioning hole 43.
During assembly, the bottom plate 41 is positioned on the shelf 2, then the injector 51 is positioned in the first positioning groove 411 on the bottom plate 41, and then the pressing plate 42 and the bottom plate 41 are installed on the detection platform 11 through screws, so that the positioning of the injector 51 is realized; because the syringes 51 with different specifications can be different in shape and outer diameter, the positioning seat 4 can be detachably mounted on the rest stand 2, so that the universality of the testing equipment can be improved by replacing the proper positioning seat 4 to adapt to different syringes 51.
The slide table 3 moves back and forth relative to the detection platform 11 under the action of the first driving mechanism 71: as shown in fig. 2, two parallel first slide rails 13 are disposed on the upper surface of the detection platform 11 at intervals along the left-right direction, each first slide rail 13 extends along the front-back direction, and the sliding table 3 is erected on the first slide rail 13 through a first slide block 30.
As shown in fig. 7, the first driving mechanism 71 is disposed in the chassis 1, the first driving mechanism 71 includes a first motor 711 mounted on the lower surface of the detection platform 11, a first screw 712 connected to the first motor 711 in a driving manner, and a first connecting block 713 in threaded connection with the first screw 712, the first screw 712 extends in the front-back direction, the detection platform 11 is provided with a first sliding slot 14 extending in the front-back direction, the upper portion of the first connecting block 713 passes through the first sliding slot 14 and is connected to the sliding table 3, and the first connecting block 713 moves back and forth along the first sliding slot 14 under the action of the first screw 712, so as to drive the sliding table 3 to move back and forth.
In order to prevent dust from falling into the case 1 from the first chute 14, a first corrugated protection cover 15 is covered on the first chute 14.
As shown in fig. 2 to 4, in addition, the detection platform 11 is provided with a first proximity switch 16 for detecting whether the sliding table 3 is reset to the initial state, the sliding table 3 is provided with a first sensing piece 31 which is in sensing fit with the first proximity switch 16, the first sensing piece 31 is a metal piece, when the sliding table 3 moves backwards, the first sensing piece 31 is far away from the first proximity switch 16, and the first sensing piece 31 and the first proximity switch 16 are disconnected; when the sliding table 3 is reset forward to the right position, the first sensing piece 31 and the first proximity switch 16 are conducted, and whether the sliding frame 6 is reset to the initial state is judged through the cooperation of the first proximity switch 16 and the first sensing piece 31.
The return arm 61 and the pushing column 62 on the sliding frame 6 both extend back and forth and face the positioning seat 4, and the sliding frame 6 moves left and right relative to the sliding frame 6 under the action of the second driving mechanism 72:
as shown in fig. 2 to 4, the second slide rail 32 extending in the left-right direction is provided on the upper surface of the slide base 3, and the slide base 6 moves relative to the slide base 3 by the second slide block 64 slidably provided on the second slide rail 32.
The second driving mechanism 72 includes a second motor 721 provided on the slide table 3, a first gear 722 provided at an output end of the second motor 721, and a first rack 723 provided on the slide frame 6 and engaged with the first gear 722, the first rack 723 extending in the left-right direction. When the second motor 721 rotates the first gear 722, the first rack 723 moves leftwards, so that the carriage 6 moves leftwards, and when the second motor 721 rotates reversely, the first rack 723 moves rightwards, so that the carriage 6 moves rightwards, so that the reset rod 61 and the push column 62 alternately face the syringe 51 by the left-right movement of the carriage 6, so that the piston or the movable sleeve 50 is pushed.
In addition, the sliding table 3 is provided with a second proximity switch 33 for detecting whether the sliding frame 6 is reset to the initial state, the sliding frame 6 is provided with a second sensing piece 63 which is in sensing fit with the second proximity switch 33, the second sensing piece 63 is a metal piece, and when the sliding frame 6 moves leftwards, the second sensing piece 63 is disconnected from the second proximity switch 33; when the sliding frame 6 is reset to the right, the second sensing piece 63 and the second proximity switch 33 are conducted, and whether the sliding frame 6 is reset to the initial state is judged through the matching of the second proximity switch 33 and the second sensing piece 63.
The pressure sensor 611 mounted on the carriage 6 and connected to the reset lever 61 senses the reset force value of the piston when the reset lever 61 pushes the piston to move backward, and transmits the data to the controller.
CN201821209943.5 shows that, during the process of resetting the piston, the movable sleeve 50 will move a certain distance towards the piston, so that during the process of resetting the piston pushed by the reset rod 61, the second sensor will detect whether the movable sleeve 50 moves a certain distance backwards; and detects whether the movable sleeve 50 is ejected by the second sensor after the injection is completed.
The second sensor comprises a reflective optical fiber displacement sensor 82 and an amplifier 821 arranged on the detection platform and used for receiving signals of the reflective optical fiber displacement sensor 82, the amplifier is connected with the input end of the controller, the sensor is the prior art, and the reflective optical fiber displacement sensor is arranged on the upper side of the moving path of the movable sleeve. When the movable sleeve does not move to the reflection point of the second sensor, the amplifier of the reflection optical fiber cannot receive the signal or is lower than the set sensitivity value, and when the movable sleeve moves to the reflection point of the second sensor, the amplifier of the reflection optical fiber receives the signal and displays the sensitivity value which is larger than the set sensitivity value, so that the second sensor detects the movable sleeve.
When the injector 51 finishes the injection, the position of the piston at the time of finishing the injection is detected through a first sensor, and when the piston is detected, the completion of the injection is indicated so as to calculate the running time of the piston; the first sensor comprises a transmitting optical fiber 81 and a receiving optical fiber capable of receiving light of the transmitting optical fiber 81, the transmitting optical fiber 81 and the receiving optical fiber are oppositely arranged and are positioned at two sides of a moving path of the piston, in the embodiment, the transmitting optical fiber 81 and the receiving optical fiber are correspondingly arranged at the limit position of forward movement of the piston. The part located outside the plunger in the radial direction of the syringe is transparent so that the light emitted from the transmitting optical fiber 81 can be received by the receiving optical fiber when the plunger is not moved between the transmitting optical fiber 81 and the receiving optical fiber, and the light emitted from the transmitting optical fiber 81 is blocked by the plunger and cannot be received by the receiving optical fiber when the plunger is moved between the transmitting optical fiber 81 and the receiving optical fiber, so that the plunger is detected by the first sensor.
As shown in fig. 2, 5 and 6, the first sensor and the second sensor are specifically arranged as follows: the mounting plate 21 is disposed above the positioning seat 4, the mounting plate 21 is connected to the rest stand 2 through a connection column, a first guide groove 211 extending in the front-back direction and located right above the positioning hole 43 is disposed on the mounting plate 21, the first guide groove 211 is used for the transmission optical fiber 81 and the reflective optical fiber displacement sensor 82 to be inserted therein in a manner of being capable of moving back and forth, and the reflective optical fiber displacement sensor 82 is located in front of the transmission optical fiber 81.
The shelf 2 is provided with a second guide groove 22 located right below the positioning hole 43, and the second guide groove 22 is used for receiving the optical fiber to be inserted therein in a back-and-forth movement manner.
For the injectors 51 with different specifications, the positions of the first sensor and the second sensor need to be debugged, the mounting plate 21 will be marked with the setting positions of the transmitting optical fiber 81 and the reflective optical fiber displacement sensor 82 corresponding to different injectors 51, and similarly, the rest 2 will be marked with the setting positions of the receiving optical fibers corresponding to different injectors 51, so before testing, the optical fiber probe needs to be manually moved to the right position.
The device is also provided with a controller (not shown in the figure), the input end of the controller is connected with the pressure sensor, the first sensor, the second sensor, the first proximity switch 16, the second proximity switch 33, the starting switch 01, the emergency stop switch 02 and the device reset switch, the output end of the controller is connected with an alarm device (such as a buzzer), a first motor 711 in the first driving mechanism 71 and a second motor 721 in the second driving mechanism 72, and the controller collects signals and data sent by the sensors and the switches, analyzes and judges the signals and the data and sends out instructions according to the judgment result so as to control the first motor and the second motor to work. The control system can use a PLC controller or a PC, and can also select other control systems in the prior art according to requirements.
The first sensor, the second sensor, the first driving mechanism 71, and the second driving mechanism 72 are all electrically connected to the controller, and the testing method of the testing apparatus of this embodiment includes the following steps:
(1) installing the injector to be tested which is in the injection completion state but not reset into the positioning hole 43 of the positioning seat 4, wherein one end of the injector provided with the movable sleeve 50 faces forwards, and the other end faces backwards, and then executing the step (2);
(2) manually debugging the positions of the first sensor and the second sensor to correspond to the specification of the injector to be tested, and then executing the step (3);
(3) setting parameters, manually inputting the parameters on the controller or calling the set parameters of the injector to be detected, which are stored on the controller, wherein the parameters comprise the number of times of detecting the injector to be detected, the interval time of two adjacent detections of the injector, the stroke of the sliding table 3 moving back and forth, the stroke of the sliding frame 6 moving left and right, the upper limit of the reset force value of the piston, the upper limit and the lower limit of the injection running time of the piston, the first sensitivity value of the movable sleeve 50 when the piston is reset and the second sensitivity value of the movable sleeve 50 popping up after the injection is finished, and then executing the step (4);
for the injectors 51 with different specifications, a plurality of groups of programs can be set, each group of programs has corresponding set parameters of the injectors 51, and the parameters are directly called by selecting corresponding degrees;
(4) confirming whether each part of the equipment is in an initial state, if so, executing the step (5), and if not, controlling each part to move to the initial state by the controller and then executing the step (5); specifically, in the present embodiment, the controller controls the first driving mechanism 71 to move the sliding table 3 to the initial state and controls the second driving mechanism 72 to move the sliding frame 6 to the initial state, and the signals sent to the controller by the first proximity switch 16 and the second proximity switch 33 can correspondingly determine whether the sliding table 3 and the sliding frame 6 are in the initial state;
(5) the action of first actuating mechanism 71 is controlled to the controller, first actuating mechanism 71 drives sliding table 3 and moves the distance of settlement backward, reset rod 61 promotes corresponding piston backward movement to reseing after stretching into movable sleeve 50, pressure sensor 611 detects the reset force value of piston and sends for the controller, when the piston resets, the second sensor detects movable sleeve 50 and moves backward to leave the second sensor when sending the signal for the controller, the controller judges according to the reset force value that measures and the signal value that the second sensor response obtained: if the reset force value exceeds the set value or the signal value obtained by the sensing of the second sensor exceeds the set value of the first sensitivity value, the alarm device is started, the controller controls all the parts to stop working, after the fault reason is confirmed, the emergency stop switch 02 is pressed, the alarm is released, the alarm device stops alarming, then the equipment reset switch on the display screen 12 is clicked, the controller controls all the parts to return to the initial state, and then the step (5) is executed; if the reset force value is within the set range and the signal value sensed by the second sensor does not exceed the set value of the first sensitivity value, executing the step (6);
(6) the controller controls the first driving mechanism 71 to drive the sliding table 3 to move forward for a set distance, then the second driving mechanism 72 drives the sliding table 6 to move leftward for a set distance, the pushing column 62 is over against the movable sleeve 50 after the sliding table is moved to the right position, then the first driving mechanism 71 drives the sliding table 3 to move backward for a set distance, the pushing column 62 pushes the corresponding movable sleeve 50 to move backward, when the sliding table 3 moves backward for a set distance, the piston is triggered to move forward, at the moment, the controller starts timing, when the first sensor detects the piston, a signal is sent to the controller, the controller stops timing, and the controller judges according to the signal: if the injection running time of the piston exceeds a set value, starting an alarm device, controlling each part to stop working by a controller, pressing an emergency stop switch 02 after confirming the fault reason, releasing the alarm to stop the alarm device, then clicking an equipment reset switch on a display screen 12, controlling each part to return to an initial state by the controller, and executing the step (5); if the injection running time is in the set range, executing the step (7);
(7) the controller controls the first driving mechanism 71 to drive the sliding table 3 to move forward for a set distance, in the process, the pushing column 62 is separated from the contact with the movable sleeve 50, the second sensor sends a signal to the controller when detecting the movable sleeve 50, and the controller judges according to the signal value sensed by the second sensor: if the signal value sensed by the second sensor exceeds the set value of the second sensitivity value, the movable sleeve 50 is ejected normally, and the step (8) is executed; if the signal value sensed by the second sensor is lower than the set value of the second sensitivity value, the movable sleeve 50 is not ejected normally, the alarm device is started, the controller controls all the parts to stop working, the emergency stop switch 02 is pressed after the fault reason is confirmed, the alarm is released to stop the alarm device from giving an alarm, then the equipment reset switch on the display screen 12 is clicked, the controller controls all the parts to return to the initial state, and the step (5) is executed;
(8) after the set time interval is reached, returning to the step (4), executing the next detection, and circularly reciprocating until the set cycle times are finished; if the injectors pass through the set test times (such as 300 times), and the alarm phenomenon does not occur, the injectors are qualified; otherwise, the product is not qualified.
During the test process, the USB flash disk can be inserted to export test data.
The reasons for the failure in the above test methods are generally as follows: 1, if the injector is abnormal, replacing the injector again, or not reinstalling, or selectively shielding the group of detection through a display screen, directly testing the injector without testing the injector, and testing the injectors in other positioning holes 43; 2, checking input signal monitoring when the injector is not abnormal, and determining whether the input signal monitoring is caused by abnormal debugging; 3, the first sensor and the second sensor are abnormal, the numerical value change of the amplifier in the running process is confirmed, the numerical value of the optical fiber amplifier is adjusted, and the positions of the first sensor and the second sensor are adjusted; 4, if the reset force is abnormal, determining whether excessive reset exists or not, and adjusting program reset parameters; confirming whether the reset rod 61 and the piston are positioned on the same axis and whether interference exists, adjusting the positioning seat 4 and ensuring that the injection pen is properly installed on the positioning seat 4; 5, setting abnormal alarm parameters and adjusting the parameters;
the testing device of this embodiment is suitable for the injector 51 whose piston is triggered to move forward by the movable sleeve 50, such as CN201821209943.5, and it is worth mentioning that the reset rod 61 in this embodiment pushes the piston, and in fact the reset rod 61 pushes the tube of the injection simulation module in CN 201821209943.5.
Example 2
As shown in fig. 8 to 10, example 2 differs from example 1 in that: the piston of the injector 52 of this embodiment is triggered by the button 521 arranged at the tail of the injector 52, and moves forward through the button 521, so as to push the piston to move forward, so the testing apparatus of this embodiment needs to be further provided with the triggering mechanism 9 capable of pushing the button 521 to move forward.
The trigger mechanism 9 is located at the rear side of the positioning seat 4, the trigger mechanism 9 includes a third driving mechanism 73 electrically connected to the controller, a base 91 drivingly connected to the third driving mechanism 73 for moving forward and backward relative to the detection platform 11, and a trigger piece disposed on the base 91 and capable of triggering the button 521, in this embodiment, the trigger piece is a push rod 921 extending forward and backward.
The base 91 moves back and forth relative to the detection platform 11 through a third slider 911 slidably disposed on the first slide rail 13, the third driving mechanism 73 is disposed in the case 1 and spaced from the first driving mechanism 71 in the left-right direction, the third driving mechanism 73 includes a third motor 731 disposed on the lower surface of the detection platform 11, a third screw 732 drivingly connected to the third motor 731, a third connecting block 733 threadedly connected to the third screw 732, the third screw 732 extends in the front-back direction, the detection platform 11 is provided with a second slide groove 18 extending back and forth, the upper portion of the third connecting block 733 is connected to the base 91 through the second slide groove 18, the third connecting block 733 moves back and forth along the second slide groove 18 under the action of the third screw 732, thereby driving the base 91 to move back and forth, when the base 91 moves forward, the pushing rod 921 pushes the button 521 to move forward, and the piston is pushed by the button 521 to move forward.
In order to prevent dust from falling into the case 1 from the second chute 18, a second bellows-type shield 19 is covered at the second chute 18.
In addition, a third proximity switch 10 for detecting whether the base 91 is reset backwards to an initial state is arranged on the detection platform 11, a third induction sheet 912 which is in induction fit with the third proximity switch 10 is arranged on the base 91, the third induction sheet 912 is a metal sheet, and when the base 91 moves forwards, the third induction sheet 912 is disconnected from the third proximity switch 10; when the base 91 is reset to the right position backwards, the third inductive sheet 912 and the third proximity switch 10 are turned on, and whether the base 91 is reset to the initial state is judged through the cooperation of the third proximity switch 10 and the third inductive sheet 912.
The test method of the apparatus of this embodiment is different from that of embodiment 1 in that:
in the step (3), setting a forward and backward movement stroke of the base 91; in the step (6), when the sliding table 3 moves backwards to the set distance, the following conditions are added until the controller starts to time: the base 91 is driven by the third drive mechanism to move forward to a set distance, at which time the piston is triggered by the push rod 921.
Other steps can be referred to example 1.
Example 3
As shown in fig. 11 and 12, embodiment 3 differs from embodiment 2 in that: the plunger of the syringe of this embodiment is triggered by a button 531 provided on the sidewall of the syringe 53, and the plunger is pushed to move forward by pressing the button 531, so the trigger mechanism 9 of the testing apparatus of this embodiment is different from that of embodiment 2.
Be equipped with the second rack 93 that extends along the fore-and-aft direction on the base 91, and the base 91 top is equipped with the fixed bolster 95 that can fix on positioning seat 4, is equipped with the roll-over stand 94 that can overturn towards positioning seat 4 on the fixed bolster 95, is equipped with the second gear 941 with second rack 93 meshing on the roll-over stand 94, and the trigger is the lug 922 that can press button 531 on the perisporium of syringe 53, and the lug 922 is located on the terminal surface towards positioning seat 4 of roll-over stand 94.
When the base 91 moves backwards, the roll-over stand 94 turns forwards and downwards, the corresponding button 531 is pressed by the lug 922 on the roll-over stand 94, and the piston is triggered; when the base 91 moves forward, the roll-over stand 94 is turned backward and upward to be reset.
In addition, in the present embodiment, when the base 91 moves backward, the third sensing piece 912 is disconnected from the third proximity switch 10; when the base 91 is reset forward to the right position, the third inductive sheet 912 and the third proximity switch 10 are turned on, and whether the base 91 is reset to the initial state is judged through the cooperation of the third proximity switch 10 and the third inductive sheet 912.
The test method of the device of the present embodiment is different from that of embodiment 2 in that:
in the step (6), when the sliding table 3 moves backwards to the set distance, the following conditions are added until the controller starts to time: the seat 91 is driven by the third drive mechanism to move rearwardly to a set distance at which time the plunger is triggered by the tab 922.
Claims (15)
1. A device for testing the performance of a syringe, comprising
A detection platform (11);
the positioning seat (4) is arranged on the detection platform (11), and a positioning hole (43) which extends in the front-back direction and can be used for positioning the injector is formed in the positioning seat (4);
the sliding table (3) is connected with the first driving mechanism (71), can be arranged on the detection platform (11) in a front-and-back movement mode, and is positioned on the front side of the positioning seat (4);
the sliding frame (6) is connected with the second driving mechanism (72) and can be arranged on the sliding table (3) in a left-right moving mode, reset rods (61) used for pushing the piston in the injector to move backwards and reset and pushing columns (62) used for pushing the movable sleeve (50) in the injector to move backwards are arranged on the sliding frame (6) at intervals in the left-right direction, and the reset rods (61) and the pushing columns (62) extend forwards and backwards and face the positioning seat (4);
the pressure sensor (611) is arranged on the sliding frame (6), is connected with the reset rod (61) and is used for detecting the reset force value of the piston resetting backwards;
the first sensor is arranged on the detection platform (11) and used for sensing the position of the piston when the injection of the injector is finished;
the second sensor is arranged on the detection platform (11) and used for sensing whether the movable sleeve (50) of the injector moves backwards in the piston resetting process and whether the movable sleeve is ejected out after the injection of the injector is finished;
and the input end of the controller is connected with the pressure sensor (611) and the first and second sensors, and the output end of the controller is connected with the first driving mechanism (71) and the second driving mechanism (72) so as to control the work of the first driving mechanism (71) and the second driving mechanism (72).
2. The syringe performance testing apparatus of claim 1, wherein: the positioning seat (4) comprises
The detection platform comprises a bottom plate (41) which is detachably arranged on the detection platform (11), wherein a first positioning groove (411) extending from front to back is formed in the upper surface of the bottom plate (41);
the pressing plate (42) is detachably mounted on the bottom plate (41), a second positioning groove (421) corresponding to the first positioning groove (411) is formed in the lower surface of the pressing plate (42), and the first positioning groove (411) and the second positioning groove (421) jointly form the positioning hole (43) in the state that the bottom plate (41) is connected with the pressing plate (42).
3. The syringe performance testing apparatus of claim 1, wherein: the first sensor comprises a transmitting optical fiber (81) and a receiving optical fiber capable of receiving light of the transmitting optical fiber (81), wherein the transmitting optical fiber (81) and the receiving optical fiber are oppositely arranged and are positioned on two sides of a moving path of the piston.
4. The syringe performance testing apparatus of claim 3, wherein: the second sensor comprises a reflective optical fiber displacement sensor (82) and an amplifier (821) used for receiving signals of the reflective optical fiber displacement sensor, the amplifier (821) is connected with the input end of the controller, and the reflective optical fiber displacement sensor (82) is arranged on one side of the moving path of the movable sleeve (50).
5. The syringe performance testing apparatus of claim 4, wherein: the detection platform (11) is also provided with
The mounting plate (21) is positioned above the positioning seat (4), a first guide groove (211) which extends along the front-back direction and is positioned right above the positioning hole (43) is formed in the mounting plate (21), the first guide groove (211) is used for the transmitting optical fiber (81) and the reflective optical fiber displacement sensor (82) to be inserted in the first guide groove in a back-and-forth movement mode, and the reflective optical fiber displacement sensor (82) is positioned in front of the transmitting optical fiber (81);
the placing frame (2) is used for installing the positioning seat (4), a second guide groove (22) located right below the positioning hole (43) is formed in the placing frame (2), and the second guide groove (22) is used for enabling the receiving optical fiber of the first sensor to be inserted in the second guide groove in a back-and-forth movement mode.
6. The syringe performance testing apparatus of claim 1, wherein: the first driving mechanism (71) comprises a first motor (711) arranged on the detection platform (11), a first screw rod (712) connected with the first motor (711) in a driving mode, and a first connecting block (713) in threaded connection with the first screw rod (712), the first connecting block (713) is connected with the sliding table (3), and the first screw rod (712) extends in the front-back direction.
7. The syringe performance testing apparatus of claim 1, wherein: the second driving mechanism (72) comprises a second motor (721) arranged on the sliding table (3), a first gear (722) arranged at the output end of the second motor (721) and a first rack (723) arranged on the sliding frame (6) and meshed with the first gear (722), and the first rack (723) extends in the left-right direction.
8. Injector performance testing apparatus according to any one of claims 1 to 7, characterised in that: the detection platform (11) is further provided with a trigger mechanism (9) capable of triggering buttons (521,531) on the injector for driving the piston to move forwards, the trigger mechanism (9) is located on the rear side of the positioning seat (4), the trigger mechanism (9) comprises a third drive mechanism, a base (91) which is connected with the third drive mechanism in a driving mode and moves forwards and backwards relative to the detection platform (11), and a trigger piece which is arranged on the base (91) and capable of pressing the buttons (521,531), and the output end of the controller is connected with the third drive mechanism (73) to control the third drive mechanism (73) to work.
9. The syringe performance testing apparatus of claim 8, wherein: the third driving mechanism comprises a third motor (731) arranged on the detection platform (11), a third screw (732) connected with the third motor (731) in a driving mode, and a third connecting block (733) in threaded connection with the third screw (732), the third connecting block (733) is connected with the base (91), and the third screw (732) extends in the front-back direction.
10. The syringe performance testing apparatus of claim 8, wherein: the trigger piece is a push rod (921) capable of pushing a button (521) at the rear end of the injector to move forwards, and the push rod (921) extends in the front-back direction.
11. The syringe performance testing apparatus of claim 8, wherein: be equipped with second rack (93) that extend along the fore-and-aft direction on base (91), just base (91) top is equipped with roll-over stand (94) that can turn over towards positioning seat (4), be equipped with on roll-over stand (94) second gear (941) with second rack (93) meshing, lug (922) of button (531) on the trigger for can pressing the syringe perisporium, lug (922) are located on the terminal surface towards positioning seat (4) of roll-over stand (94).
12. The syringe performance testing apparatus of claim 8, wherein: a first proximity switch (16) used for detecting whether the sliding table (3) is reset to an initial state or not is arranged on the detection platform (11), and a first induction sheet (31) in induction fit with the first proximity switch (16) is arranged on the sliding table (3); a second proximity switch (33) used for detecting whether the sliding frame (6) is reset to the initial state or not is arranged on the sliding table (3), and a second induction sheet (63) which is in induction fit with the second proximity switch (33) is arranged on the sliding frame (6); the detection platform (11) is provided with a third proximity switch (10) used for detecting whether the base (91) is reset to an initial state or not, the sliding table (3) is provided with a third induction sheet (912) which is in induction fit with the third proximity switch (10), and the first proximity switch, the second proximity switch and the third proximity switch (16, 33 and 10) are respectively connected with corresponding input ends of the controller.
13. The syringe performance testing apparatus of claim 1, wherein: and the detection platform (11) is also provided with an emergency stop switch (02) and an equipment reset switch which are connected with the input end of the controller, and an alarm device which is connected with the output end of the controller.
14. A method of testing the syringe performance testing apparatus of claim 13, comprising the steps of:
(1) installing the injector to be tested which is in an injection completion state but not reset into the positioning hole (43) of the positioning seat (4), wherein one end of the injector provided with the movable sleeve (50) faces forwards, and the other end faces backwards, and then executing the step (2);
(2) manually debugging the positions of the first sensor and the second sensor to correspond to the specification of the injector to be tested, and then executing the step (3);
(3) setting parameters, manually inputting the parameters on a controller or calling the set parameters of the injector to be detected, which are stored on the controller, wherein the parameters comprise the number of times of detecting the injector to be detected, the interval time of two adjacent detections of the injector, the stroke of the sliding table (3) moving forwards and backwards, the stroke of the sliding frame (6) moving left and right, the reset force value of the piston, the injection running time of the piston, the first sensitivity value of the movable sleeve (50) when the piston is reset and the second sensitivity value of the movable sleeve (50) popping up after the injection is finished, and then executing the step (4);
(4) confirming whether each part of the equipment is in an initial state, if so, executing the step (5), and if not, controlling each part to move to the initial state by the controller and then executing the step (5);
(5) the controller controls the action of the first driving mechanism (71), the first driving mechanism (71) drives the sliding table (3) to move backwards for a set distance, the reset rod (61) stretches into the movable sleeve and then pushes the corresponding piston to move backwards to reset, the pressure sensor (611) detects the reset force value of the piston and sends the reset force value to the controller, when the piston resets, the second sensor detects that the movable sleeve (50) moves backwards to leave the second sensor and sends a signal to the controller, and the controller judges according to the detected reset force value and the signal value obtained by the induction of the second sensor: if the reset force value exceeds the set value or the signal value obtained by the sensing of the second sensor exceeds the set value of the first sensitivity value, the alarm device is started, the controller controls all the parts to stop working, after the fault reason is confirmed, the emergency stop switch (02) is pressed, the alarm is relieved, then the equipment reset switch is triggered manually, the controller controls all the parts to return to the initial state, and then the step (5) is executed; if the reset force value is within the set range and the signal value sensed by the second sensor does not exceed the set value of the first sensitivity value, executing the step (6);
(6) the controller controls the first driving mechanism (71) to drive the sliding table (3) to move forward for a set distance, then the second driving mechanism (72) drives the sliding frame (6) to move leftward for a set distance, the pushing column (62) is opposite to the movable sleeve (50) after the sliding frame is moved to the right position, then the first driving mechanism (71) drives the sliding table (3) to move backward for a set distance, the pushing column (62) pushes the corresponding movable sleeve (50) to move backward, when the sliding table (3) moves backward for a set distance, the piston is triggered to move forward, at the moment, the controller starts timing, when the first sensor detects the piston, a signal is sent to the controller, the controller stops timing, and the controller judges according to the signal: if the injection running time of the piston exceeds a set value, the alarm device is started, the controller controls all parts to stop working, after the fault reason is confirmed, the emergency stop switch (02) is pressed to remove the alarm, then the equipment reset switch is triggered manually, the controller controls all parts to return to the initial state, and then the step (5) is executed; if the injection running time is in the set range, executing the step (7);
(7) the controller controls the first driving mechanism (71) to drive the sliding table (3) to move forward for a set distance, in the process, the pushing column (62) is separated from the movable sleeve (50), when the second sensor detects the movable sleeve (50), a signal is sent to the controller, and the controller judges according to the signal value sensed by the second sensor: if the signal value sensed by the second sensor exceeds the set value of the second sensitivity value, the movable sleeve (50) is ejected normally, and the step (8) is executed; if the signal value sensed by the second sensor is lower than the set value of the second sensitivity value, the movable sleeve (50) is not ejected normally, the alarm device is started, the controller controls all the parts to stop working, after the fault reason is confirmed, the emergency stop switch (02) is pressed, the alarm is relieved, then the equipment reset switch is triggered manually, the controller controls all the parts to return to the initial state, and then the step (5) is executed;
(8) after the set time interval is reached, returning to the step (4), executing the next detection, and circularly reciprocating until the set cycle times are finished; if the injectors pass the set test times, the injectors are qualified; otherwise, the product is not qualified.
15. The test method of claim 14, wherein: the detection platform (11) is also provided with a trigger mechanism (9) capable of triggering buttons (521,531) on the injector for driving the piston to move forwards, the trigger mechanism (9) is positioned at the rear side of the positioning seat (4), the trigger mechanism (9) comprises a third drive mechanism, a base (91) which is connected with the third drive mechanism in a driving way and moves forwards and backwards relative to the detection platform (11), and a trigger piece which is arranged on the base (91) and can press the buttons (521,531), and the output end of the controller is connected with the third drive mechanism (73) so as to control the third drive mechanism (73) to work;
in the step (3), setting the back-and-forth movement stroke of the base (91); in the step (6), when the sliding table (3) moves backwards to the set distance, the following conditions are added until the controller starts to time: the base (91) is driven by a third drive mechanism to move forward or backward to a set distance at which time the piston is triggered by the trigger.
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| CN113483970B (en) * | 2021-05-24 | 2023-11-03 | 北京工业大学 | Sealing detection equipment suitable for multi-model veterinary injection appliance |
| CN114136599A (en) * | 2021-11-19 | 2022-03-04 | 南京信息职业技术学院 | Detection device and detection method for reuse prevention characteristic of injector |
| CN114305363A (en) * | 2021-12-31 | 2022-04-12 | 浙江善时生物药械(商丘)有限公司 | Intelligent positioning method of blood pressure or hemodynamics detection sensor |
| CN114305362A (en) * | 2021-12-31 | 2022-04-12 | 浙江善时生物药械(商丘)有限公司 | Intelligent transverse driving device for sensor of arterial blood pressure or blood flow detector |
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