CN118549055B - Syringe leakproofness detecting system - Google Patents
Syringe leakproofness detecting system Download PDFInfo
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- CN118549055B CN118549055B CN202411019602.1A CN202411019602A CN118549055B CN 118549055 B CN118549055 B CN 118549055B CN 202411019602 A CN202411019602 A CN 202411019602A CN 118549055 B CN118549055 B CN 118549055B
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- 238000007789 sealing Methods 0.000 claims abstract description 105
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- 239000005341 toughened glass Substances 0.000 claims description 4
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- 238000004519 manufacturing process Methods 0.000 abstract description 11
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Abstract
The invention discloses a system for detecting tightness of an injector, which belongs to the technical field of injector detection and comprises a front box, wherein a middle box is arranged on the side edge of the front box, an inner side frame is arranged at the center of the top of the middle box, a sealing and clamping mechanism is clamped at the top of the inner side frame, and a traction mechanism is arranged at the bottom of one side of the inner side frame; the invention can realize the detection and judgment process of combining machinery and a system, is beneficial to improving the detection precision of the tightness of the whole detection equipment to the injector, marks and displays data of different areas according to the detection result, is convenient for the targeted analysis of operators after detection, can also improve the local detection precision of the injector through the area partition of the detection equipment, and feeds the local detection precision back to the front-end production process, thereby promoting the fine adjustment of the whole injector production process and improving the quality control of the whole injector.
Description
Technical Field
The invention relates to the technical field of syringe detection, in particular to a syringe tightness detection system.
Background
In order to ensure the tightness of the injector, the production process adopts strict quality control measures, including selection of raw materials, precise manufacturing process and strict detection links, after the finished injector is assembled, batch detection is needed by professional equipment for detecting the sealing between the injector cylinder and the piston, which is a key part for preventing leakage of liquid medicine or gas from the piston to the cylinder wall, and the joint part of the needle head and the injector, wherein poor sealing causes leakage of the liquid medicine in the injection process, and the integral structural integrity of the injector, including parts such as a pipe body, a piston, a push rod and the like, is influenced by breakage or defect of any part;
in connection with the above, it should be noted that: in the detection process of the traditional injector, the traditional injector is influenced by the structure of the injector, so that a plurality of potential sealing hazard areas exist on the injector body, the sealing performance of each potential sealing hazard area of the injector cannot be effectively distinguished in the traditional pumping detection, and the traditional injector is directly exposed in the public natural environment and lacks of unification of the detection environment;
in view of the above technical drawbacks, a solution is now proposed.
Disclosure of Invention
The invention aims to provide a system for detecting the tightness of an injector, which is characterized in that data of detection equipment in the using period are acquired, the acquired data are compared with preset stored data to obtain relevant rating signals, and the detection equipment is combined to carry out partition type linkage detection on different areas with hidden sealing trouble on the injector body, so that the detection and judgment process of combination of machinery and the system can be realized, and the tightness detection precision of the whole detection equipment on the injector is improved;
meanwhile, the data of different areas are marked and displayed according to the detection result, so that the operator can conveniently analyze the pertinence after detection, the local detection precision of the injector can be improved through the area partition of the detection equipment, and the local detection precision is fed back to the front-end production process, so that the fine adjustment of the whole injector production process is promoted, the quality of the whole injector is improved, and the problem is solved.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides an injector tightness detecting system, includes the front box, the front box side is provided with the middle box, middle box top center is provided with the inner side frame, inner side frame top joint has the seal and press from both sides mechanism, inner side frame one side bottom is provided with traction mechanism, traction mechanism top is provided with and lifts pipe mechanism and closing cap, traction mechanism includes traction cylinder and supports the clamp plate, it includes chassis and arc layer board to lift pipe mechanism;
The utility model discloses a vacuum pump, including well case bottom center, well case is kept away from the front box, and well case bottom center inlays and is equipped with the vacuum pump, and the vacuum pump terminal surface is provided with governing valve one and pipe, one side that well case kept away from the front box is provided with the back case side by side, it is equipped with control panel to inlay on the slope of back case top, and the concave storage storehouse that is provided with on the plane of back case top, seal and press from both sides the mechanism and include first and second of last sealing piece, go up second middle part of sealing piece and be provided with the suction tube that extends to the basin inside.
Further, the bottom of the middle box is concavely provided with a bottom cavity, the top of one side of the bottom cavity is provided with an air vent, the top of one side of the middle box is provided with a partition plate, the top of the partition plate is provided with a first sealing groove, the side edge of the inner side frame is provided with an outer side frame close to the water tank, and a second sealing groove is concavely formed between the outer side frame and the inner side frame.
Further, traction cylinder top is provided with the guide frame, the side bottom of supporting the clamp plate towards the interior side bearer is provided with the fixture block, the closing cap side is provided with the auxiliary lid, and is provided with the closing plate on the auxiliary lid bottom inner wall, closing cap and auxiliary lid top center are provided with toughened glass, be provided with the sealing strip on the roof in the closing cap, and be provided with the inflation gasbag on the diapire in the closing cap.
Further, be provided with spacing slider on the inboard diapire of chassis, and spacing slider top is provided with the guide pillar, the guide pillar middle part is provided with the loop bar, and loop bar one end is provided with presses the handle, be provided with spring damper between loop bar and the spacing slider, the loop bar top is provided with the movable slide block that the chassis top is connected.
Further, the first bottom of last sealing block is provided with down sealing block one, run through between last sealing block one and the first lower sealing block and be provided with the tube chute, inlay on the tube chute inner wall and be equipped with sealed cushion, go up sealing block two bottom and be provided with down sealing block two, the suction tube inlays and establishes between last sealing block two and lower sealing block two, and is provided with governing valve two on the suction tube one end body.
Further, a supervision platform, a state data acquisition unit, an operation feedback unit, a state analysis unit, an alarm reminding unit and a component execution unit are arranged in the control panel;
The state data acquisition unit acquires the air pressure value in the detection equipment, analyzes the acquired air pressure value, and sends the acquired pipe risk signal and needle risk signal to the operation feedback unit and the state analysis unit; the operation feedback unit immediately acquires detection operation parameters of the detection equipment after receiving the pipe risk signals and the needle risk signals, wherein the detection operation parameters comprise injection air pressure values and pipe wall deformation values, analyzes the detection operation parameters, sends an obtained normal signal to the state analysis unit through the state data acquisition unit, and sends an obtained abnormal signal to the alarm reminding unit;
When the state analysis unit receives the normal signal, the pipe risk signal or the needle risk signal, the state analysis unit respectively generates a primary leakage risk signal and a secondary leakage risk signal, and sends the generated signals to the component execution unit and the alarm reminding unit.
Further, the analysis process of the air pressure value by the status data acquisition unit is as follows:
The method comprises the steps of collecting the time length from the starting operation time to the ending operation time of equipment, marking the time length as a time threshold, acquiring the air pressure value in the detection equipment according to the time threshold, and comparing the air pressure value with a preset air pressure value threshold range stored and recorded in a supervision platform; if the air pressure value is greater than the maximum value in the preset air pressure value range, generating a tube risk signal; if the air pressure value is within the preset air pressure value range, no signal is generated; if the air pressure value is less than the minimum value in the preset air pressure value range, generating a needle risk signal.
Further, the analysis process of the operation feedback unit on the detected operation parameters is as follows:
Dividing a time threshold into i time scales, acquiring injection air pressure values in detection equipment in each time scale, accordingly acquiring difference values of the injection air pressure values in two connected sub-time scales, marking the difference values as injection difference values, constructing an injection difference value set, acquiring difference values of the injection difference value set, and marking the difference values as difference evaluation values;
Further acquiring a pipe wall deformation value of the injector pipe body part affected by air pressure in each sub time scale, establishing a histogram by taking the sub time scale as an X axis and taking an injection air pressure value and the pipe wall deformation value as a Y axis according to the pipe wall deformation value, drawing the columnar length of the injection air pressure value and the pipe wall deformation value in the histogram by taking the sub time scale as a standard progress, drawing a change curve by sequentially drawing points on the columnar length peaks of the injection air pressure value and the pipe wall deformation value according to the standard progress of the sub time scale, drawing a preset pipe body controllable range threshold curve in the histogram, acquiring the number of pipe wall deformation value change curves corresponding to the pipe wall deformation value change curve and the injection air pressure value change curve from the histogram, marking the number as an abnormal value, simultaneously acquiring the total area enclosed between the pipe wall deformation value change curve and the injection air pressure value change curve above the preset pipe body controllable range threshold curve, marking the total area enclosed by the pipe wall deformation value change curve and the injection air pressure value change curve as an abnormal area, and marking the area enclosed by the abnormal constant and the abnormal area as an abnormal risk value;
Comparing the difference evaluation value and the abnormal risk area value with a preset difference evaluation value threshold value and an abnormal risk area value threshold value which are stored and recorded in the supervision platform, and analyzing: if the difference evaluation value is smaller than the preset difference evaluation value threshold value and the abnormal risk area value is smaller than the preset abnormal risk area value threshold value, generating a normal signal; if the difference evaluation value is greater than or equal to a preset difference evaluation value threshold value and the abnormal risk area value is greater than or equal to a preset abnormal risk area value threshold value, generating an abnormal signal.
Further, the state analysis unit immediately generates a first-level leakage risk signal after receiving the normal signal and the pipe risk signal, instantly acquires a part of the air pressure value exceeding the maximum value in the preset air pressure value range, marks the part as a high-pressure risk value, and compares the high-pressure risk value with the preset high-pressure risk value range stored and recorded in the supervision platform for analysis: if the high-pressure risk value exceeds the maximum value in the preset high-pressure risk value range, generating a primary plan regulating signal; and if the high-pressure risk value is within the preset high-pressure risk value range, generating a first-level marking signal.
The beneficial effects of the invention are as follows:
The invention acquires data of the detection equipment in the using period, compares the acquired data with the preset stored data to obtain related rating signals, combines the partition type linkage detection of the detection equipment on different areas with hidden sealing hazards of the injector body, so that the detection and judgment process of combining machinery and a system can be realized, the detection precision of the tightness of the whole detection equipment on the injector can be improved, the data of different areas can be marked and displayed according to the detection result, the targeted analysis of operators after the detection is facilitated, the local detection precision of the injector can be improved through the partition of the areas of the detection equipment, and the local detection precision of the injector can be fed back to the front-end production process, thereby promoting the fine adjustment of the whole injector production process and improving the quality of the whole injector;
The invention combines the linkage of the traction mechanism, the tube lifting mechanism and the sealing and clamping mechanism to form the adaptive positioning and clamping before the detection of the injector and the automatic synchronous operation during the detection, thereby effectively avoiding the uncertainty and the interference of human factors existing in the manual operation and improving the detection precision and the efficiency of the whole injector.
Drawings
For the convenience of those skilled in the art, the present invention will be further described with reference to the accompanying drawings;
FIG. 1 is a perspective view of the overall structure of the present invention;
FIG. 2 is a schematic top perspective view of the middle box;
FIG. 3 is a schematic view of the connection structure of the partition and the pipe lifting mechanism of the present invention;
FIG. 4 is a schematic view of a tube lifting mechanism according to the present invention;
FIG. 5 is a schematic diagram of the traction mechanism of the present invention;
FIG. 6 is a schematic diagram of a clamping mechanism according to the present invention;
FIG. 7 is a schematic view of a closure according to the present invention;
FIG. 8 is a schematic view of the internal cross-sectional structure of the tank of the present invention;
FIG. 9 is a bar graph showing system parameters according to the present invention;
FIG. 10 is a flow chart of the system of the present invention.
Reference numerals: 1. a front case; 2. a middle box; 201. an air vent; 202. a partition plate; 203. a bottom cavity; 204. an inner side frame; 205. an outer side frame; 206. a first seal groove; 207. sealing grooves II; 208. a water tank; 3.a rear case; 301. a storage bin; 4. a control panel; 5. a cover; 501. a sub-cover; 502. tempered glass; 503. a sealing strip; 504. inflating the balloon; 505. a sealing plate; 6. a traction mechanism; 601. a guide frame; 602. a pressing plate; 603. a clamping block; 604. a traction cylinder; 7. a tube lifting mechanism; 701. a chassis; 702. pressing the handle; 703. an arc-shaped supporting plate; 704. a guide post; 705. a spring damper; 706. a limit sliding block; 707. a loop bar; 708. a movable slide block; 8. a clamping mechanism; 801. an upper sealing block I; 802. an upper sealing block II; 803. a first lower sealing block; 804. a second lower sealing block; 805. a tube groove; 806. sealing rubber cushion; 807. a suction tube; 808. a second regulating valve; 9. a vacuum pump; 901. a first regulating valve; 902. a catheter.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one: referring to fig. 1-10, the present embodiment is an injector tightness detection system, including a front case 1, wherein a single control button corresponding to a tube testing chamber is provided on the top of the front case 1, a middle case 2 is provided on the side of the front case 1, an inner side frame 204 is provided at the center of the top of the middle case 2, a clamping mechanism 8 is clamped on the top of the inner side frame 204, a traction mechanism 6 is provided at the bottom of one side of the inner side frame 204, and a tube lifting mechanism 7 and a sealing cover 5 are provided above the traction mechanism 6;
The traction mechanism 6 comprises a traction cylinder 604 and a pressing plate 602, and the pipe lifting mechanism 7 comprises a bottom frame 701 and an arc-shaped supporting plate 703; the center of the bottom of the middle box 2 is embedded with a vacuum pump 9, the end face of the vacuum pump 9 is provided with a first regulating valve 901 and a conduit 902, one side of the middle box 2 far away from the front box 1 is provided with a rear box 3 side by side, the top inclined surface of the rear box 3 is embedded with a control panel 4, the top plane of the rear box 3 is concavely provided with a storage bin 301, the sealing and clamping mechanism 8 comprises a first upper sealing block 801 and a second upper sealing block 802, and the middle part of the second upper sealing block 802 is provided with a suction pipe 807 extending into the water tank 208;
Shan Xianbing which are used for the one-to-one correspondence of the pipe lifting mechanisms 7 are arranged on the side edge of the control panel 4, and a supervision platform, a state data acquisition unit, an operation feedback unit, a state analysis unit, an alarm reminding unit and a component execution unit are arranged in the control panel 4; it should be noted that: when the supervision platform generates a supervision instruction, the generated supervision instruction is sent to a state data acquisition unit, the state data acquisition unit immediately acquires an air pressure value in detection equipment when receiving the supervision instruction, analyzes the acquired air pressure value, sends an obtained pipe risk signal and a needle risk signal to an operation feedback unit and a state analysis unit, immediately acquires detection operation parameters of the detection equipment after receiving the pipe risk signal and the needle risk signal, the detection operation parameters comprise an injection air pressure value and a pipe wall deformation value, analyzes the detection operation parameters, sends an obtained normal signal to the state analysis unit through the state data acquisition unit, sends an obtained abnormal signal to an alarm reminding unit, and when receiving the normal signal, the pipe risk signal or the needle risk signal, respectively generates a first-stage leakage risk signal and a second-stage leakage risk signal, and sends the generated signals to a component execution unit and the alarm reminding unit, the alarm reminding unit displays the received signals on a single display screen in a literal mode, and the analysis process of the air pressure value by the state data acquisition unit is as follows:
the method comprises the steps of collecting the time length from the starting operation time to the ending operation time of equipment, marking the time length as a time threshold, acquiring the air pressure value in the detection equipment according to the time threshold, and comparing the air pressure value with a preset air pressure value threshold range stored and recorded in a supervision platform;
If the air pressure value is greater than the maximum value in the preset air pressure value range, generating a tube risk signal; if the air pressure value is within the preset air pressure value range, no signal is generated;
If the air pressure value is smaller than the minimum value in the preset air pressure value range, generating a needle risk signal, and sending the obtained tube risk signal and the needle risk signal to an operation feedback unit and a state analysis unit;
The operation feedback unit immediately acquires detection operation parameters of the detection equipment after receiving the pipe risk signals and the needle risk signals, wherein the detection operation parameters comprise injection air pressure values and pipe wall deformation values, the detection operation parameters are analyzed, and the analysis process of the operation feedback unit on the detection operation parameters is as follows:
Dividing a time threshold into i time scales, wherein i is a natural number larger than zero, acquiring the injection air pressure value in the detection equipment in each time scale, accordingly acquiring the difference value of the injection air pressure value in the two connected sub-time scales, marking the difference value as an injection difference value, constructing an injection difference value set, acquiring the difference value of the injection difference value set, and marking the difference value as a difference evaluation value, wherein the following needs to be described: the larger the value of the difference evaluation value is, the more abnormal the sealing performance of the syringe in the detecting apparatus is;
Further acquiring the pipe wall deformation value of the injector pipe body part in each sub-time scale affected by air pressure, establishing a histogram by taking the sub-time scale as an X axis and taking the injection air pressure value and the pipe wall deformation value as a Y axis, drawing the columnar lengths of the injection air pressure value and the pipe wall deformation value in the histogram by taking the sub-time scale as a standard progress, and drawing a change curve by sequentially drawing points on the columnar length peaks of the injection air pressure value and the pipe wall deformation value according to the standard progress of the sub-time scale;
Meanwhile, drawing a threshold curve of a controllable range of a preset pipe body in the histogram, obtaining the number of the corresponding change curves of the deformation value of the pipe wall on the threshold curve of the controllable range of the preset pipe body and the change curve of the magnitude of the injected air pressure from the histogram, marking the number as an abnormal value, obtaining the total area enclosed between the change curve of the deformation value of the pipe wall above the threshold curve of the controllable range of the preset pipe body and the change curve of the magnitude of the injected air pressure, marking the total area as an abnormal area, and marking the product of the abnormal constant and the abnormal area as an abnormal risk area value according to the total area, wherein the total area is required to be explained: a is expressed as an injection air pressure value, b is expressed as a pipe wall deformation value, c is expressed as an abnormal area, d is expressed as an abnormal value, e is expressed as a variation curve of the injection air pressure value, f is expressed as a threshold curve of a preset pipe body controllable range, j is expressed as a variation curve of the pipe wall deformation value, X is a sub-time scale increment value, and Y is an increment variation range of the injection air pressure value and the pipe wall deformation value;
Comparing the difference evaluation value and the abnormal risk area value with a preset difference evaluation value threshold value and an abnormal risk area value threshold value which are stored and recorded in the supervision platform, and analyzing:
if the difference evaluation value is smaller than a preset difference evaluation value threshold and the abnormal risk area value is smaller than a preset abnormal risk area value threshold, generating a normal signal, and transmitting the obtained normal signal to a state analysis unit through a state data acquisition unit;
If the difference evaluation value is greater than or equal to a preset difference evaluation value threshold value and the abnormal risk area value is greater than or equal to a preset abnormal risk area value threshold value, generating an abnormal signal, sending the obtained abnormal signal to an alarm reminding unit, immediately generating a sequence n/syringe abnormal pattern word after the alarm reminding unit receives the abnormal signal and sending the sequence n/syringe abnormal pattern word to Shan Xianbing corresponding to a tube test chamber where the syringe is located, wherein n is a natural number greater than zero and is expressed as a serial number of the tube test chamber, and controlling the single display screen to perform red screen flicker.
Embodiment two: when the state analysis unit receives the normal signal, the pipe risk signal or the needle risk signal, the state analysis unit respectively generates a first-level leakage risk signal and a second-level leakage risk signal, and sends the generated signals to the component execution unit and the alarm reminding unit, the state analysis unit immediately generates the first-level leakage risk signal after receiving the normal signal and the pipe risk signal, immediately acquires a part of the air pressure value exceeding the maximum value in the preset air pressure value range, marks the part as a high-pressure risk value, and compares the high-pressure risk value with the preset high-pressure risk value range stored and recorded in the supervision platform for analysis:
If the high-pressure risk value exceeds the maximum value in the preset high-pressure risk value range, a primary scheme regulation signal is generated, the generated primary scheme regulation signal is sent to a component execution unit, the component execution unit immediately controls a traction cylinder 604 and a vacuum pump 9 to work after receiving the primary scheme regulation unit, the vacuum pump 9 temporarily injects air pressure of a pipe test chamber, a second regulating valve 808 opens the connection between a needle and a suction pipe 807, the traction cylinder 604 drives a piston into a pipe body through a guide frame 601, a pressing plate 602 and a clamping strip, residual air in the pipe body is promoted to be suddenly reduced, only a small amount of air in the connection area of the pipe body and the needle is reserved, and a second regulating valve 808 disconnects the connection between the needle and the suction pipe 807 again;
if the high-pressure risk value is within the preset high-pressure risk value range, generating a first-level marking signal, sending the generated first-level marking signal to an alarm reminding unit, recording the air pressure change of the pipe test chamber during the execution of the parts before and after the generation of the first-level plan regulating and controlling unit by the alarm reminding unit, displaying the air pressure change on a single display screen, facilitating the analysis and recording of operators, synchronously generating a sequence n/pipe body tightness abnormal style text by the first-level marking signal, and sending the text to the single display screen for displaying;
The state analysis unit immediately generates a secondary leakage risk signal after receiving the normal signal and the needle risk signal, instantly acquires a part of which the air pressure value is smaller than the minimum value in a preset air pressure value range, marks the part with a low-pressure risk value, and compares the low-pressure risk value with the preset low-pressure risk value range stored and recorded in the supervision platform for analysis:
If the low-pressure risk value exceeds the maximum value of the preset low-pressure risk value range, generating a secondary scheme regulation signal, sending the generated secondary scheme regulation signal to a component execution unit, immediately controlling a vacuum pump 9 to work after the component execution unit receives the secondary remote regulation signal, connecting a needle, a conduit 902, a first regulating valve 901 and the vacuum pump 9 through a second regulating valve 808, blocking the connection between the needle and a suction pipe 807, and directly providing the air pressure conveyed by the vacuum pump 9 for the interior of the needle, wherein at the moment, a traction cylinder 604 drives a piston to submerge into the interior of a tube body, reduces the space between the tube body and the needle, continuously increases the injection air pressure, and is used for detecting the air pressure fluctuation between the tube body and the needle, the air pressure change in a side view chamber of the needle and the air pressure change in a test chamber of the tube;
If the low-pressure risk value is within the preset low-pressure risk value range, generating a secondary marking signal, sending the generated secondary marking signal to an alarm reminding unit, immediately generating a sequence n/needle sealing abnormality style text after the alarm reminding unit receives the secondary marking signal, and sending the text to a corresponding single display screen for display.
Embodiment III: the bottom of one side of the middle box 2 is concavely provided with a bottom cavity 203, the top of one side of the bottom cavity 203 is provided with an air vent 201 penetrating through the middle box 2, a plurality of groups of partition plates 202 are arranged at equal intervals on the top of one side of the middle box 2, the top of the partition plates 202 is provided with a first sealing groove 206, the side edge of an inner side frame 204 is provided with an outer side frame 205 which is close to a water tank 208, and a second sealing groove 207 is concavely arranged between the outer side frame 205 and the inner side frame 204;
According to the production batch, randomly extracting a quantitative injector, replacing an adaptive arc-shaped supporting plate 703 according to the type of the injector, clamping the needle part of the injector by using a regulating valve II 808, limiting and clamping the pipe body of the injector close to one end of the needle by using an upper sealing block I801, adjusting the arc-shaped supporting plate 703 to adapt the pipe body of the injector close to one end of a piston by pressing a handle 702, locking the pipe body on the arc-shaped supporting plate 703 by using an adaptive fastener, clamping the piston between a pressing plate 602 and a clamping block 603, injecting quantitative clear water into a water tank 208, and completely sealing the injector in detection equipment by using a sealing cover 5 and an auxiliary cover 501 together with a partition 202, an inner side frame 204 and an outer side frame 205;
The traction cylinder 604 is embedded among the groups of partition plates 202, a guide frame 601 connected with a pressing plate 602 is arranged at the top of the traction cylinder 604, a clamping block 603 is arranged at the bottom of the side edge of the pressing plate 602, which faces the inner side frame 204, an auxiliary cover 501 is arranged at the side edge of the sealing cover 5, a sealing plate 505 is arranged on the inner wall of the bottom of the auxiliary cover 501, toughened glass 502 is arranged at the centers of the top of the sealing cover 5 and the auxiliary cover 501, a sealing strip 503 is arranged on the inner top wall of the sealing cover 5, and an expansion air bag 504 is arranged on the inner bottom wall of the sealing cover 5;
A limit sliding block 706 is arranged on the bottom wall of the inner side of the underframe 701, a guide column 704 connected with an arc-shaped supporting plate 703 is arranged at the top of the limit sliding block 706, a sleeve rod 707 connected with the top wall of the inner side of the underframe 701 is arranged in the middle of the guide column 704, a pressing handle 702 is arranged at one end of the sleeve rod 707 far away from the traction cylinder 604, a spring damper 705 is arranged between the sleeve rod 707 and the limit sliding block 706, and a movable sliding block 708 connected with the top of the underframe 701 is arranged at the top of the sleeve rod 707;
Pushing down the pressing handle 702 by external force to drive the loop bar 707 to drive the guide post 704 to coaxially slide downwards, the loop bar 707 extrudes the spring damper 705, connection locking is released between the inside of the top of the loop bar 707 and the top of the inner wall of the underframe 701, the pressing handle 702 is transversely pulled to axially move along the underframe 701 under the state of loose pressing force, the position of the arc-shaped supporting plate 703 on the underframe 701 is adjusted to adapt to the length of the injector pipe body, after a plurality of groups of arc-shaped supporting plates 703 are waited to lift the two ends of the pipe body respectively, the pipe body is limited and locked by utilizing an external fastener to be matched with the arc-shaped supporting plate 703, an infrared scanning sensor is embedded at the side edge of the arc-shaped supporting plate 703 and used for detecting the deformation value of the pipe wall of the pipe body, and a miniature air pressure sensor I is embedded in the middle part of the inner wall of the piston facing the needle;
The pushing plate 602 is adapted and replaced according to the type of the injector, before the pipe body is installed, the piston is pulled to be pushed against the pushing plate 602, the bottom support of the piston is clamped into a gap between the pushing plate 602 and the clamping block 603, after the pipe body is limited, the traction cylinder 604 is controlled to operate according to the starting of the detection equipment, the traction cylinder 604 drives the pushing plate 602 to clamp the piston to move along a preset track through the guide frame 601, the extrusion and extraction of air in the injector are formed, and the suction of clear water in the water tank 208 is completed, so that the basic performance of the injector is detected;
the sealing cover 5 is clamped with a plurality of groups of partition boards 202 through sealing strips 503 and is connected with an expansion airbag 504 through an external air pipe, when the sealing cover 5 is connected with the partition boards 202, gaps among the sealing cover 5, the partition boards 202, the inner wall of the middle box 2 and the inner side frame 204 are filled, and the sealing cover is locked through external fasteners, an independent pipe test chamber is formed among the sealing cover 5, the partition boards 202, the middle box 2 and the inner side frame 204, the auxiliary cover 501 is connected with the middle box 2, the outer side frame 205 and the inner side frame 204 in a sealing way through a sealing plate 505 and the expansion airbag 504, and a needle test chamber is formed, and a plurality of groups of micro air pressure sensors II are embedded on the inner walls of the pipe test chamber and the needle test chamber and are connected with the micro air pressure sensors I in a linkage way to detect air pressure values;
The piston is kept to be sunk into the tube body to the maximum extent, the space in the tube body is reduced, the vacuum pump 9 is respectively connected with a plurality of groups of vent holes 201 and a second regulating valve 808 through a first regulating valve 901 and a conduit 902, the vent holes 201 are respectively positioned at the bottoms of the isolated tube test chamber and the needle test chamber, the vacuum pump 9 is used for injecting air and pressurizing the tube test chamber through the vent holes 201, the pressure increment in the tube test chamber is realized, the sealing performance between the piston and the tube body is detected, and if the change increment is generated in the tube body, the sealing performance of the connection between the surface piston and the tube body is abnormal;
The vacuum pump 9 is connected through the ventilation hole 201 in the needle test cavity, incremental air pressure is injected into the needle test cavity, the incremental air pressure is used for detecting the sealing performance of the connection area between the needle head and the pipe body, and if the air pressure between the pipe body and the needle head changes, the sealing performance of the connection area between the needle head and the pipe body is abnormal;
The bottom of the first upper sealing block 801 is provided with a first lower sealing block 803, a pipe groove 805 is arranged between the first upper sealing block 801 and the first lower sealing block 803 in a penetrating way, a sealing rubber pad 806 is embedded on the inner wall of the pipe groove 805, the bottom of the second upper sealing block 802 is provided with a second lower sealing block 804, a suction pipe 807 is embedded between the second upper sealing block 802 and the second lower sealing block 804, and a second regulating valve 808 is arranged on a pipe body at one end of the suction pipe 807;
The second regulating valve 808 is used for sealing and clamping the needle part in a cladding mode through accessories such as a flange, the second regulating valve 808 is connected with the suction pipe 807, the suction pipe 807 extends to the clean water bottom of the water tank 208, the connecting area of the second regulating valve 808 and the suction pipe 807 is clamped and limited between the second upper sealing block 802 and the second lower sealing block 804, sealing rubber gaskets 806 are arranged among the first upper sealing block 801, the second lower sealing block 803, the second upper sealing block 802 and the second lower sealing block 804, the sealing rubber gaskets are in butt joint and locked in a one-to-one mode in the groove areas of the inner side frame 204 and the outer side frame 205 through bolts, and the first upper sealing block 801 is used for sealing and clamping the pipe body in a cladding mode through the pipe grooves 805 and the sealing rubber gaskets 806.
By combining the first embodiment and the second embodiment, the detection and judgment process of combining the machine and the system can be realized, the tightness detection precision of the whole detection equipment to the injector can be improved, the data of different areas can be marked and displayed according to the detection result, the targeted analysis of operators after detection is facilitated, the local detection precision of the injector can be improved through the area partition of the detection equipment, the local detection precision of the injector can be fed back to the front end production process, the fine adjustment of the whole injector production process can be further promoted, and the quality control of the whole injector can be improved.
The size of the threshold is set for ease of comparison, and regarding the size of the threshold, the number of cardinalities is set for each set of sample data depending on how many sample data are and the person skilled in the art; as long as the proportional relation between the parameter and the quantized value is not affected. The present invention is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present invention and the inventive concept thereof, can be replaced or changed within the scope of the present invention.
Claims (7)
1. The utility model provides an injector tightness detecting system, includes front box (1), its characterized in that, front box (1) side is provided with middle box (2), middle box (2) top center is provided with interior side bearer (204), interior side bearer (204) top joint has seal clip mechanism (8), interior side bearer (204) one side bottom is provided with traction mechanism (6), traction mechanism (6) top is provided with and lifts tub mechanism (7) and closing cap (5), traction mechanism (6) include traction cylinder (604) and pressure board (602), lift tub mechanism (7) include chassis (701) and arc layer board (703);
The vacuum box is characterized in that a vacuum pump (9) is embedded in the center of the bottom of the middle box (2), a regulating valve I (901) and a guide pipe (902) are arranged on the end face of the vacuum pump (9), a rear box (3) is arranged side by side on one side, far away from the front box (1), of the middle box (2), a control panel (4) is embedded on the inclined surface of the top of the rear box (3), a storage bin (301) is concavely arranged on the plane of the top of the rear box (3), the sealing mechanism (8) comprises an upper sealing block I (801) and an upper sealing block II (802), and a suction pipe (807) extending into the water tank (208) is arranged in the middle of the upper sealing block II (802).
The bottom of one side of the middle box (2) is concavely provided with a bottom cavity (203), the top of one side of the bottom cavity (203) is provided with an air vent (201), the top of one side of the middle box (2) is provided with a partition plate (202), the top of the partition plate (202) is provided with a first sealing groove (206), the side edge of the inner side frame (204) is provided with an outer side frame (205) which is close to a water tank (208), and a second sealing groove (207) is concavely arranged between the outer side frame (205) and the inner side frame (204);
the top of the traction cylinder (604) is provided with a guide frame (601), a clamping block (603) is arranged at the bottom of the side edge of the pressing plate (602) facing the inner side frame (204), an auxiliary cover (501) is arranged at the side edge of the sealing cover (5), a sealing plate (505) is arranged on the inner wall of the bottom of the auxiliary cover (501), toughened glass (502) is arranged at the centers of the tops of the sealing cover (5) and the auxiliary cover (501), a sealing strip (503) is arranged on the inner top wall of the sealing cover (5), and an expansion air bag (504) is arranged on the inner bottom wall of the sealing cover (5);
an infrared scanning sensor is embedded at the side of the arc-shaped supporting plate (703) and used for detecting the deformation value of the pipe wall of the pipe body, and a miniature air pressure sensor I is embedded in the middle of the inner wall of the piston, which faces the needle head;
an independent pipe test chamber is formed among the sealing cover (5), the partition plate (202), the middle box (2) and the inner side frame (204), the auxiliary cover (501) is connected with the middle box (2), the outer side frame (205) and the inner side frame (204) in a sealing way through the sealing plate (505) and the expansion air bag (504) to form a needle test chamber, and a plurality of groups of micro air pressure sensors II are embedded on the inner walls of the pipe test chamber and the needle test chamber and are in linkage with the micro air pressure sensors I to detect air pressure values;
The vacuum pump (9) is respectively connected with a plurality of groups of ventilation holes (201) and a plurality of groups of regulating valves (808) through a first regulating valve (901) and a second regulating valve (902), the ventilation holes (201) are respectively positioned at the bottoms of the isolated pipe test chamber and the needle test chamber, and the vacuum pump (9) is used for injecting air and pressurizing the pipe test chamber through the ventilation holes (201).
2. The syringe tightness detection system according to claim 1, wherein a limit slider (706) is arranged on the bottom wall of the inner side of the bottom frame (701), a guide post (704) is arranged at the top of the limit slider (706), a sleeve rod (707) is arranged in the middle of the guide post (704), a pressing handle (702) is arranged at one end of the sleeve rod (707), a spring damper (705) is arranged between the sleeve rod (707) and the limit slider (706), and a movable slider (708) connected with the top of the bottom frame (701) is arranged at the top of the sleeve rod (707).
3. The syringe tightness detection system according to claim 1, wherein a first lower sealing block (803) is arranged at the bottom of the first upper sealing block (801), a pipe groove (805) is formed between the first upper sealing block (801) and the first lower sealing block (803) in a penetrating manner, a sealing rubber pad (806) is embedded on the inner wall of the pipe groove (805), a second lower sealing block (804) is arranged at the bottom of the second upper sealing block (802), a suction pipe (807) is embedded between the second upper sealing block (802) and the second lower sealing block (804), and a second regulating valve (808) is arranged on a pipe body at one end of the suction pipe (807).
4. The syringe tightness detection system according to claim 1, wherein the control panel (4) is internally provided with a supervision platform, a status data acquisition unit, an operation feedback unit, a status analysis unit, an alarm reminding unit and a component execution unit;
The state data acquisition unit acquires the air pressure value in the detection equipment, analyzes the acquired air pressure value, and sends the acquired pipe risk signal and needle risk signal to the operation feedback unit and the state analysis unit; the operation feedback unit immediately acquires detection operation parameters of the detection equipment after receiving the pipe risk signals and the needle risk signals, wherein the detection operation parameters comprise injection air pressure values and pipe wall deformation values, analyzes the detection operation parameters, sends an obtained normal signal to the state analysis unit through the state data acquisition unit, and sends an obtained abnormal signal to the alarm reminding unit;
When the state analysis unit receives the normal signal, the pipe risk signal or the needle risk signal, the state analysis unit respectively generates a primary leakage risk signal and a secondary leakage risk signal, and sends the generated signals to the component execution unit and the alarm reminding unit.
5. The syringe tightness detection system according to claim 4, wherein the analysis of the air pressure value by the status data acquisition unit is as follows:
The method comprises the steps of collecting the time length from the starting operation time to the ending operation time of equipment, marking the time length as a time threshold, acquiring the air pressure value in the detection equipment according to the time threshold, and comparing the air pressure value with a preset air pressure value threshold range stored and recorded in a supervision platform; if the air pressure value is greater than the maximum value in the preset air pressure value range, generating a tube risk signal; if the air pressure value is within the preset air pressure value range, no signal is generated; if the air pressure value is less than the minimum value in the preset air pressure value range, generating a needle risk signal.
6. The syringe tightness testing system of claim 5, wherein said operational feedback unit is configured to analyze the sensed operational parameters as follows:
Dividing a time threshold into i time scales, acquiring injection air pressure values in detection equipment in each time scale, accordingly acquiring difference values of the injection air pressure values in two connected sub-time scales, marking the difference values as injection difference values, constructing an injection difference value set, acquiring difference values of the injection difference value set, and marking the difference values as difference evaluation values;
Further acquiring the pipe wall deformation value of the injector pipe body part in each sub-time scale affected by air pressure, establishing a histogram by taking the sub-time scale as an X axis and taking the injection air pressure value and the pipe wall deformation value as a Y axis, drawing the columnar lengths of the injection air pressure value and the pipe wall deformation value in the histogram by taking the sub-time scale as a standard progress, and drawing a change curve by sequentially drawing points on the columnar length peaks of the injection air pressure value and the pipe wall deformation value according to the standard progress of the sub-time scale;
Drawing a threshold curve of a controllable range of a preset pipe body in the histogram, obtaining the number of the corresponding change curves of the deformation value of the pipe wall, which are positioned on the threshold curve of the controllable range of the preset pipe body and the change curve of the magnitude of the injected air pressure, from the histogram according to the threshold curve, marking the number as an abnormal value, obtaining the total area enclosed between the change curve of the deformation value of the pipe wall, which is positioned above the threshold curve of the controllable range of the preset pipe body, and the change curve of the magnitude of the injected air pressure, marking the total area as an abnormal area, and marking the product of the abnormal constant and the abnormal area as an abnormal risk area value according to the abnormal area;
Comparing the difference evaluation value and the abnormal risk area value with a preset difference evaluation value threshold value and an abnormal risk area value threshold value which are stored and recorded in the supervision platform, and analyzing: if the difference evaluation value is smaller than the preset difference evaluation value threshold value and the abnormal risk area value is smaller than the preset abnormal risk area value threshold value, generating a normal signal; if the difference evaluation value is greater than or equal to a preset difference evaluation value threshold value and the abnormal risk area value is greater than or equal to a preset abnormal risk area value threshold value, generating an abnormal signal.
7. The syringe tightness detection system according to claim 6, wherein the state analysis unit immediately generates a first-level leakage risk signal after receiving the normal signal and the tube risk signal, immediately acquires a portion of the air pressure value exceeding a maximum value in a preset air pressure value range, marks the portion as a high-pressure risk value, and compares the high-pressure risk value with a preset high-pressure risk value range stored and entered in the supervision platform for analysis: if the high-pressure risk value exceeds the maximum value in the preset high-pressure risk value range, generating a primary plan regulating signal; and if the high-pressure risk value is within the preset high-pressure risk value range, generating a first-level marking signal.
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| CN113731831A (en) * | 2021-11-02 | 2021-12-03 | 常州医疗器材总厂股份有限公司 | Syringe detection device and detection method |
| CN220339595U (en) * | 2023-07-14 | 2024-01-12 | 广州辰睿智能装备有限公司 | Negative pressure leakage detector for injector |
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| CN101216365B (en) * | 2007-01-04 | 2010-12-01 | 上海康德莱企业发展集团有限公司 | Needle and syringe integral syringe air tightness test rapid jigs and method of use thereof |
| JP5460354B2 (en) * | 2010-01-25 | 2014-04-02 | 東レエンジニアリング株式会社 | Liquid leak detection device |
| WO2019053113A1 (en) * | 2017-09-14 | 2019-03-21 | Lonza Ltd | Device and method for improved closure integrity testing |
| US11389599B2 (en) * | 2019-02-12 | 2022-07-19 | Lonza Ltd | Displacement device, testing device and method for leakage testing of a connection of a tip cap with a syringe |
| JP2023505488A (en) * | 2019-12-05 | 2023-02-09 | エフ・ホフマン－ラ・ロシュ・アクチェンゲゼルシャフト | Syringe and Airtightness Test Method |
| CN115597792B (en) * | 2022-12-15 | 2023-03-14 | 常州龙灏医疗科技有限公司 | Syringe performance detection device |
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| CN113731831A (en) * | 2021-11-02 | 2021-12-03 | 常州医疗器材总厂股份有限公司 | Syringe detection device and detection method |
| CN220339595U (en) * | 2023-07-14 | 2024-01-12 | 广州辰睿智能装备有限公司 | Negative pressure leakage detector for injector |
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