Quality detection device for transdermal patch production and application

Abstract

The invention provides a quality detection device for transdermal patch production application, which belongs to the technical field of detection equipment, and comprises an electric chain plate conveyor, an air compressor, a detection mechanism, a control circuit, a thickness detection circuit, a trigger circuit and a pushing mechanism, each detection mechanism comprises a sleeve, a spring, a pressure sensor, a movable rod and a bearing which are installed together, a fixing frame is installed at the upper end of a frame of the electric chain plate conveyor, the sleeves of the three detection mechanisms are installed at the lower end of the fixing frame respectively, the pushing mechanism comprises an air cylinder and a pushing plate which are installed together, and pushing openings are formed in the two ends of the frame respectively. A cylinder barrel of the air cylinder is installed on the outer side of the push opening in one end, and the control circuit, the thickness detection circuit and the trigger circuit are installed in the electric cabinet and electrically connected. When the detected products are unqualified, the push plate can automatically push the products out of the conveying line to enter the defective product frame, so that the detection efficiency is improved, and the product quality is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of transdermal patch production auxiliary equipment, in particular to a quality detection device for transdermal patch production application. Background Art

[0002] Transdermal patches are a type of dosage form for transdermal drug delivery, which is used on the intact skin surface. When using a transdermal patch, the user tears off the protective film and sticks it on the outside of the skin. The drug is delivered through the skin barrier into the blood circulation system to exert a systemic effect. The transdermal patch delivery method can prevent drug absorption from being affected by factors such as pH, food, and transit time in the digestive tract, and can also avoid the first-pass effect of the liver. Transdermal patches can achieve flexible drug delivery, which means long-term administration and can be stopped at any time. They are particularly suitable for infants, children with poor medication compliance, and elderly people with weak swallowing ability.

[0003] According to different types, some existing transdermal patches have a layer of medicine adhered to the inner surface of the transdermal patch (the inner side of the entire transdermal patch is in one plane), and some transdermal patches have a layer of medicine adhered to the middle of the inner side thereof by heating, etc., which protrudes from the inner surface of the transdermal patch. In transdermal patches, whether the drug is located in the middle of the transdermal patch after production and the thickness (the drug is too far outside the transdermal patch, and when the user uses it, it cannot be guaranteed that the adhesive layer of the transdermal patch located at the drug side end is uniformly adhered to the skin, and the drug-loaded transdermal patch is relatively easy to separate from the skin, which brings inconvenience to use and affects the treatment effect. Correspondingly, insufficient thickness of the drug-loaded area, that is, insufficient drug loading, will also affect the treatment effect), will affect the quality of the finished product and the treatment effect, so the existing manufacturers of mass-produced transdermal patches will conduct quality inspections on the products after production. In current technology, the quality inspection of drug-loaded transdermal patches is generally carried out through manual visual inspection. Manual inspection is time-consuming, labor-intensive, and inefficient. It is also affected by the experience and work responsibility of the inspectors and cannot guarantee the effective detection of transdermal patches with quality problems. Summary of the invention

[0004] In order to overcome the drawbacks of manual quality inspection in the existing transdermal patch production due to technical limitations as described in the background, the present invention provides a quality inspection device for transdermal patch production application that can automatically and continuously inspect the finished transdermal patches input into the production line under the joint action of relevant mechanisms, and when the inspected product is abnormal, it can be automatically pushed out of the conveyor line and into the defective product frame, thereby improving the inspection efficiency and ensuring the product quality.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A quality inspection device for transdermal patch production application, including an electric chain plate conveyor and an air compressor, characterized in that it also has a detection mechanism, a control circuit, a thickness detection circuit, a trigger circuit, and a pushing mechanism; the detection mechanism has multiple sets, each set of the detection mechanism includes a sleeve, a spring, a pressure sensor, a movable rod, and a bearing, the pressure sensor is fixedly installed at the upper end of the sleeve, a limit plate is installed at the upper end of the movable rod, the spring and the limit plate are movably installed in the sleeve, and the bearing is rotatably installed at the lower end of the movable rod; a fixed frame is fixedly installed at the upper end of the frame of the electric chain plate conveyor, the sleeve of the first set of detection mechanism is fixedly installed at the front lower end of the fixed frame, and the sleeves of the second set of detection mechanism and the third set of detection mechanism are respectively fixedly installed on both sides of the rear lower end of the fixed frame; the pushing mechanism includes a cylinder and a push plate, the frame is located at the rear side of the fixed frame and has push ports at both ends, and the piston of the cylinder and the push plate are fixedly installed together , the cylinder barrel of the cylinder is fixedly installed on the outside of the push port at one end, and the air intake pipes of the air intake and exhaust solenoid valves at the front and rear ends of the cylinder barrel of the cylinder are connected in parallel with the exhaust pipes of the air compressor air tank; the control circuit, thickness detection circuit, and trigger circuit are installed in the electric control box; the first control power output end of the trigger circuit is electrically connected to the power input end of the electric chain conveyor, and the second control power output end of the trigger circuit is electrically connected to the power input ends of the two air intake and exhaust solenoid valves of the cylinder respectively; the power input ends of the pressure sensors of the second and third detection mechanisms, the power input ends of the two thickness detection circuits and the power output end of the control circuit are electrically connected, and the signal output ends of the three pressure sensors are electrically connected to the control circuit and the signal input ends of the two thickness detection circuits respectively; the signal output ends of the two thickness detection circuits are electrically connected to the signal input end of the trigger circuit.

[0007] Furthermore, the outer dimension of the push plate is smaller than the inner diameter of the push opening, and the lower side end of the push plate and the conveying plate of the electric chain plate conveyor are in the same plane.

[0008] Furthermore, the inner diameters of the two push openings are consistent and are located in the same plane and the same straight line, and a defective product frame is placed at the lower end of one of the push openings.

[0009] Furthermore, the front-to-rear spacing between the first and second detection mechanisms and the detection mechanism bearings is smaller than the length of the transdermal patch, and the spacing between the second and third detection mechanism bearings is smaller than the width between the drug areas of the transdermal patch.

[0010] Furthermore, the distance between the lower end of the bearing of the front set of detection mechanisms and the upper end of the conveying plate is smaller than the distance between the lower end of the bearing of the two sets of detection mechanisms at the rear end and the upper end of the conveying plate.

[0011] Furthermore, the control circuit includes a relay and a time control module, and a resistor that are electrically connected; the positive power input terminal of the time control module is connected to the relay control power input terminal, the negative power input terminal of the time control module is connected to the negative control power input terminal, the relay negative power input terminal, and one end of the first resistor; the other end of the first resistor is connected to one end of the second resistor and the positive control power input terminal of the time control module.

[0012] Furthermore, the thickness detection circuit has two paths, each path includes an electrically connected resistor, a transistor and a relay, one end of the first resistor is connected to one end of the second resistor and the base of the transistor, the collector of the transistor is connected to the negative power input terminal of the relay, the other end of the second resistor is connected to the emitter of the transistor, and the positive power input terminal of the relay is connected to the control power input terminal.

[0013] Furthermore, in the two thickness detection circuits, a normally closed contact terminal of a relay of the first thickness detection circuit is connected to a normally closed contact terminal of a relay of the second thickness detection circuit.

[0014] Furthermore, the trigger circuit includes an electrically connected relay, a time control module, and a time-controlled switch, the power output end of the time control module is connected to the positive power input end of the relay and the positive power input ends of the two sets of time-controlled switches, and the negative power input ends of the two sets of time-controlled switches are connected to the negative power input end of the relay, the negative power input end of the time control module, and the negative control power input end.

[0015] Compared with the prior art, the present invention has the following beneficial effects: under the action of three sets of detection mechanisms and control circuits, two-way thickness detection circuits, etc., the present invention can detect the finished transdermal patches continuously input by the electric chain plate conveyor. When the drug thickness of the detected product is not enough or is not centered, the trigger circuit can control the two inlet and exhaust solenoid valves of the cylinder to work separately, and then the push plate automatically pushes it out of the conveyor line into the defective product frame, thereby improving the detection efficiency and ensuring the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0019] Figure 3 It is a circuit diagram of the present invention. DETAILED DESCRIPTION

[0020] Figure 1-Figure 3As shown in the figure, a quality inspection device for transdermal patch production application includes a power supply module A1, an electric chain plate conveyor M, and an air compressor (not shown in the figure), and also has a detection mechanism 1, a control circuit 2, a thickness detection circuit 3, a trigger circuit 4, and a driving mechanism; the detection mechanism 1 has three sets, each set of the detection mechanism includes a rectangular sleeve 101, a spring 102, a pressure sensor (A2, A, A4), a movable rod 103, and a bearing 104. The upper end of the sleeve 101 is a closed structure, and the middle part of the lower end has a guide hole 1011 (to facilitate the up and down movement of the movable rod), the pressure sensor (A2, A, A4) is installed at the upper end of the sleeve 101 and its force surface is located at the lower end, and a rectangular limit plate 1031 with an outer diameter smaller than the inner diameter of the sleeve is welded to the upper end of the movable rod 103, and the spring 102 , the limit plate 1031 is movably sleeved in the sleeve 101 from top to bottom, a connecting rod 105 is horizontally welded to the lower end of the movable rod 103, and the inner ring of the bearing 104 is tightly sleeved on the outer end of the connecting rod 105; a "Π"-shaped fixed frame 5 is welded on the upper end of the frame of the electric chain plate conveyor, the vertically distributed upper end of the sleeve 101 of the first set of detection mechanisms is welded to the middle of the front lower end of the fixed frame 5, and the vertically distributed upper ends of the sleeves 101 of the second and third sets of detection mechanisms are respectively welded to both sides of the rear lower end of the fixed frame 5; the pushing mechanism includes a cylinder 6 and a push plate 7, and the frame is located at the rear side end of the fixed frame. There are a rectangular push opening 51 on the left and right parts, respectively, the front end of the piston of the cylinder 6 and the middle part of the rear side end of the push plate 7 are welded together, and the two outer ends of the cylinder barrel of the cylinder 6 are respectively welded with a "┌", The two support seats 61 are fixedly installed on the two side ends outside the right push port 51 by bolts, and the air intake pipes of the air intake and exhaust solenoid valves at the front and rear ends of the cylinder barrel of the cylinder 6 and the exhaust pipes of the air tank of the air compressor are connected in parallel through pipelines; the power supply module A1, the control circuit 2, the thickness detection circuit 3, and the trigger circuit 4 are installed in the electric control box 8 of the electric chain plate conveyor.

[0021] Figure 1-Figure 3As shown in the figure, the outer dimension of the push plate 7 is smaller than the inner diameter of the push opening 51, and the lower side end of the push plate 7 and the conveying plate of the electric chain plate conveyor M are in the same plane. The inner diameters of the two push openings 51 are consistent, and are in the same plane and the same straight line. A defective product frame (not shown in the figure) is placed at the lower end of the left push opening 51. The front-to-back spacing between the first set of detection mechanisms and the second set of detection mechanisms and the detection mechanism bearings 104 is slightly smaller than the front-to-back width of the transdermal patch 9, and the left-to-right spacing between the bearings 104 of the second set of detection mechanisms and the third set of detection mechanisms is slightly smaller than the left-to-right width of the drug area of ​​the transdermal patch 9. The distance between the lower end of the bearing 104 of the front set of detection mechanisms and the upper end of the conveying plate is smaller than the distance between the lower end of the bearing 104 of the two sets of detection mechanisms at the rear end and the upper end of the conveying plate. The control circuit includes a relay J1 and a time control module A3, resistors R4 and R5 connected via circuit board wiring, a positive power input terminal 1 of the time control module A3 is connected to a control power input terminal of the relay J1, a negative power input terminal 2 of the time control module A3 is connected to a negative control power input terminal 4, a negative power input terminal of the relay J1, and one end of the first resistor R5, and the other end of the first resistor R5 is connected to one end of the second resistor R4 and a positive control power input terminal 3 of the time control module A3. The first thickness detection circuit includes resistors R1 and R2, a transistor Q1 and a relay J connected via circuit board wiring, one end of the first resistor R1 is connected to one end of the second resistor R2 and a base of the transistor Q1, a collector of the transistor Q1 is connected to a negative power input terminal of the relay J, the other end of the second resistor R2 is connected to an emitter of the transistor Q1, and a positive power input terminal of the relay J is connected to a control power input terminal. The second thickness detection circuit includes resistors R and R3, transistor Q and relay J2 connected by circuit board wiring, one end of the first resistor R and one end of the second resistor R3 are connected to the base of transistor Q, the collector of transistor Q is connected to the negative power input end of relay J2, the other end of the second resistor R3 is connected to the emitter of transistor Q, and the positive power input end of relay J2 is connected to the control power input end. In the two thickness detection circuits, the normally closed contact end of relay J of the first thickness detection circuit is connected to the normally closed contact end of relay J2 of the second thickness detection circuit. The trigger circuit includes a relay J3, a time control module A7, and time control switches A5 and A6 connected via circuit board wiring. Pin 5 of the power output terminal of the time control module A7 is connected to the positive power input terminal of the relay J3 and pin 1 of the positive power input terminals of the two sets of time control switches A5 and A6. Pin 2 of the negative power input terminals of the two sets of time control switches A5 and A6 is connected to the negative power input terminal of the relay J3, pin 2 of the negative power input terminal of the time control module A4, and pin 4 of the negative control power input terminal.

[0022] Figure 1-Figure 3As shown in the figure, the power input terminals 1 and 2 of the power supply module A1 are connected to the two poles of the AC 220V power supply through wires, the control power input terminal of the trigger circuit relay J3 is connected to the AC 380V power supply through wires, and the normally closed contact terminal of the trigger circuit relay J3 is connected to the motor power input terminal of the electric chain plate conveyor M (3KM) through wires. The 3 and 4 pins of the time control switches A5 and A6 are connected to the power input terminals of the two inlet and exhaust solenoid valves DC1 and DC2 of the cylinder through wires. The power output terminals 3 and 4 pins of the power supply module A1 are connected to the power input terminals 1 and 2 pins of the pressure sensor A2 of the first detection mechanism, the control power input terminal and the negative power input terminal of the control circuit relay J1, and the power input terminal of the trigger circuit time relay module A7 through wires. The power input terminals 1 and 2 of the pressure sensor A of the second detection mechanism and the pressure sensor A4 of the third detection mechanism, the power input terminals of the two thickness detection circuits, the positive power input terminals of relay J and the emitter of transistor Q1, the positive power input terminals of relay J2 and the emitter of transistor Q, the power output terminals of the control circuit, the normally open contact terminals of relay J1 and the negative power input terminals are connected through wires. The 3rd terminals of the three pressure sensors A2, A, and A4 are connected through wires to the other end of resistor R4, the other end of resistor R1, and the other end of resistor R. The normally closed contact terminals of relays J and J2 are connected through wires to the 3rd terminal of the time relay module A4. The resistance values ​​of resistors R1, R2, R, R3, R4, and R5 are 11K, 1K, 11K, 1K, 20K, and 1K respectively; the power supply module A1 is an AC 220V to DC 12V power supply module; the pressure sensors A2, A, and A4 are high-precision pressure sensor products of model DYZ-100, which have two power input terminals and one signal output terminal; the relays J1, J, J2, and J3 are DC12V; the transistors Q1 and Q are NPN transistors of model 9013; the time control modules A3 and A7 are time control modules of model JK-DE The finished relay module has two power input terminals, two control signal input terminals, one power output terminal, and three setting buttons. The technicians can set the time for the power output terminal to output power by operating the three setting buttons respectively. Each time the two control signal input terminals input a control signal, the power output terminal outputs power, otherwise it does not output power; the time-controlled switches A5 and A6 are the finished time-controlled switches of model THC15A, which have two power input terminals, two power output terminals, and seven setting buttons. By operating the seven setting buttons respectively, the time for the two power output terminals to output power can be set.

[0023] Figure 1-Figure 3As shown, after the AC 220V power supply enters the power input terminal of the power supply module A1, the 3rd and 4th pins of the power supply module A1 output a stable DC 12V power supply to enter the power input terminal of the pressure sensor A2, the control circuit, and the trigger circuit. The 380V power supply enters the power input terminal of the electric chain plate conveyor M through the three control power input terminals and three normally closed contact terminals of the relay J3. The chain plate of the electric chain plate conveyor M continuously outputs the transdermal patch 9 (the interval between every two transdermal patches 9) input by the previous process (for example, the electric conveyor that conveys the finished product, its end contacts the front end of the electric chain plate conveyor, and can output the transdermal patch product to the front upper end of the chain plate of the electric chain plate conveyor M; after the detection, the transdermal patch 9 enters the finished product frame at the rear end of the electric chain plate conveyor) to the lower end of the three sets of detection mechanisms 1. When no transdermal patch 9 reaches the lower end of the front detection mechanism 1, the voltage signal output from pin 3 of the pressure sensor A2 is close to 0V after being divided by R4 and R5 and entering pin 3 of the time relay module A3. Pin 5 of the time relay module A3 does not output power, the electric chain conveyor M continues to be powered, and the cylinder's intake and exhaust solenoid valves will not be powered. When a corresponding transdermal patch 9 reaches the lower end of the bearing 104 of the front end detection mechanism 1, the rear end of the transdermal patch 9 contacts the lower end of the bearing 104 and compresses the spring 102 upward during rotation through the movable rod 103 (limiting function of the limit plate). The spring compression force acts on the force-bearing surface of the pressure sensor A2, and its 3rd pin outputs a high-level voltage signal which is divided by resistors R4 and R5 and enters the 3rd pin of the time relay module A3 close to 1V. The 5th pin of the time relay module A3 then outputs 0.5 second (time adjustable) power at an interval of 1.5 seconds to enter the positive power input terminal of the relay J1. The relay J1 is energized to attract the control power input terminal and the normally open contact terminal to close, and then the pressure sensors A and A1, the positive power input terminals of the relays J and J2 are energized. In about 1.5 seconds, when a corresponding transdermal patch moves back and forth to the lower end of the bearing 104 of the second and third detection mechanisms 1, due to the high height of the drug area, the left and right sides of the drug will respectively push up the lower ends of the bearings 104 of the second and third detection mechanisms 1. In this way, the bearings 104 of the second and third detection mechanisms 1 will compress the spring 102 through the movable rod 103 (limiting effect of the limit plate) during rotation, and the spring compression force acts on the force-bearing surfaces of the pressure sensors A and A4. The 3 pins of the pressure sensors A and A4 respectively output high-level voltage signals, and the two high-level signals enter the base of the transistor Q1 through the resistors R1 and R2 respectively, and enter the base of the transistor Q through the resistors R and R3.In actual situations, when the drug-carrying area on the transdermal patch 9 is thick enough, the pressure detected by the corresponding force-bearing surface of the pressure sensor A or A4 is relatively large. In this way, the voltage signal output by the 3rd pin of the pressure sensor A is higher than 0.7V after being divided by the resistors R1 and R2 and entering the base of the transistor Q1. The transistor Q1 is turned on and the collector outputs a low level and enters the negative power input terminal of the relay J. The relay J is energized to close its control power input terminal and the normally closed contact terminal to open the circuit. The voltage signal output by the 3rd pin of the pressure sensor A4 is higher than 0.7V after being divided by the resistors R and R3 and entering the base of the transistor Q. 7V, the collector of transistor Q is turned on and outputs a low level to the negative power input terminal of relay J2, and relay J2 is energized to close its control power input terminal and the normally closed contact terminal to open the circuit; in this way, the 12V power supply will not enter the 3rd pin of the time relay module A7 through the control power input terminal and the normally closed contact terminal of relay J, the control power input terminal and the normally closed contact terminal of relay J2, the 3rd pin of the time relay module A7 will not be energized, and the corresponding 5th pin of the time relay module A7 will not output a high level to enter the positive power input terminal of relay J3 and the time control switches A3 and A6. In actual situations, when the thickness of the left or right end of the drug-carrying area on the transdermal patch 9 is not enough, or the drug-carrying area is not as centered as possible on the transdermal patch, within 0.5 seconds after the relay J1 is energized and attracted, the pressure detected by the force-bearing surface of the corresponding pressure sensor A or A4 is relatively low. In this way, the voltage signal output by the 3rd pin of the pressure sensor A is divided by the resistors R1 and R2 and enters the base of the transistor Q1, which is lower than 0.7V. The transistor Q1 is cut off and its collector no longer outputs a low level to enter the power input terminal of the relay J. The relay J loses power and no longer attracts its The control power input terminal and the normally closed contact terminal are closed; or, the voltage signal output from the 3rd pin of the pressure sensor A4 is divided by the resistors R and R3 and enters the base of the transistor Q, which is lower than 0.7V. The collector of the transistor Q is cut off and no longer outputs a low level to enter the power input terminal of the relay J2. When the relay J2 loses power, it is no longer attracted to close its control power input terminal and the normally closed contact terminal. In this way, the 12V power supply will enter the 3rd pin of the time relay module A7 through the control power input terminal and the normally closed contact terminal of the relay J, or the control power input terminal and the normally closed contact terminal of the relay J2.

[0024] Figure 1-Figure 3As shown, when the left or right thickness of the drug-carrying area on the corresponding transdermal patch is not enough, or the drug-carrying area is not centered in the transdermal patch, after a high-level signal is input to pin 3 of the time relay module A7, pin 5 of the time relay module A7 will output 2 seconds of power to the positive power input terminal of the relay J3 and the timing switches A5 and A6 at intervals of 1.5 seconds (the time is adjustable). During the time when relay J3 is energized and attracted, its control power input terminal and normally closed contact terminal are open. In this way, the electric chain conveyor will lose power and not work within 2 seconds. At this moment, the unqualified transdermal patch 9 to be tested is just located between the left end of the push plate 7 and the two push ports 51. After the time switch A5 is energized, its 3-pin outputs 1 second of power to enter the power input terminal of the intake and exhaust solenoid valve DC1 at the right rear end of the cylinder barrel of the cylinder. The valve core of the intake and exhaust solenoid valve DC1 is energized to open, and the compressed air output by the air tank of the air compressor enters the rear end of the cylinder barrel (the air at the front end of the cylinder barrel is discharged through the exhaust port of the solenoid valve DC2). The piston rod of the cylinder pushes the push plate 7 to move rapidly toward the left end. The push plate will push the unqualified transdermal patch 9 with quality problems into the defective product frame through the left end push port 51. After the time switch A6 is energized, its 3rd pin outputs 1 second power at intervals of 1 second to enter the power input end of the intake and exhaust solenoid valve DC2 at the right front end of the cylinder barrel. The valve core of the intake and exhaust solenoid valve DC2 is energized to open, and the compressed air output by the air storage tank of the air compressor enters the front end of the cylinder barrel (the air at the rear end of the cylinder barrel is discharged through the exhaust port of the solenoid valve DC1). The piston rod of the cylinder drives the push plate 7 to move quickly toward the right end, and the push plate returns to the initial position, ready for the next push of the defective product into the defective product frame. After the 5th pin of the time relay module A7 stops outputting power, the relay J3 and the time switches A6 and A5 lose power and do not work. After the relay J3 loses power, its control power input end and the normally closed contact end are closed, so that the electric chain plate conveyor M will be energized and work again, and the next transdermal patch 9 will be transported to the lower end of the three sets of detection mechanisms for quality inspection. Through the above, the present invention, under the action of three sets of detection mechanisms and control circuits, two-way thickness detection circuits, etc., can detect the finished transdermal patches continuously input by the electric chain plate conveyor. When the thickness of the detected product is not enough or is not centered, the trigger circuit can control the two inlet and exhaust solenoid valves of the cylinder to work separately, and then the push plate automatically pushes it out of the conveyor line into the defective product frame, thereby improving the detection efficiency and ensuring product quality.

[0025] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0026] In addition, it should be understood that although the present specification is described according to the implementation mode, the implementation mode does not only include an independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A quality inspection device for transdermal patch production, comprising an electric chain conveyor and an air compressor, characterized in that: It also has a detection mechanism, a control circuit, a thickness detection circuit, a trigger circuit, and a pushing mechanism; the detection mechanism has multiple sets, and each set of the detection mechanism includes a sleeve, a spring, a pressure sensor, a movable rod, and a bearing. The pressure sensor is fixedly installed on the upper end of the sleeve, and a limit plate is installed on the upper end of the movable rod. The spring and the limit plate are movably installed in the sleeve, and the bearing is rotatably installed on the lower end of the movable rod; a fixed frame is fixedly installed on the upper end of the frame of the electric chain plate conveyor, and the sleeves of the first set of detection mechanisms are fixedly installed on the front lower end of the fixed frame, and the sleeves of the second set of detection mechanisms and the third set of detection mechanisms are respectively fixedly installed on both sides of the rear lower end of the fixed frame; the pushing mechanism includes a cylinder and a push plate, and the frame is located on the rear side of the fixed frame and has push ports at both ends respectively. The piston of the cylinder and the push plate are fixedly installed together, and the cylinder barrel of the cylinder is fixedly installed on the outside of the push port at one end. , the air intake pipes of the air intake and exhaust solenoid valves at the front and rear ends of the cylinder barrel of the cylinder are connected in parallel with the exhaust pipes of the air compressor air tank; the control circuit, thickness detection circuit, and trigger circuit are installed in an electric control box; the first control power output end of the trigger circuit is electrically connected to the power input end of the electric chain conveyor, and the second control power output end of the trigger circuit is electrically connected to the power input ends of the two air intake and exhaust solenoid valves of the cylinder respectively; the power input ends of the pressure sensors of the second and third detection mechanisms, the power input ends of the two thickness detection circuits, and the power output ends of the control circuit are electrically connected, and the signal output ends of the three pressure sensors are electrically connected to the control circuit and the signal input ends of the two thickness detection circuits respectively; the signal output ends of the two thickness detection circuits are electrically connected to the signal input end of the trigger circuit.

2. A quality inspection device for transdermal patch production application according to claim 1, characterized in that: The outer dimension of the push plate is smaller than the inner diameter of the push opening, and the lower side end of the push plate and the conveying plate of the electric chain plate conveyor are in the same plane.

3. The quality inspection device for transdermal patch production according to claim 1, characterized in that: The inner diameters of the two push openings are consistent and are located in the same plane and the same straight line. A defective product frame is placed at the lower end of one of the push openings.

4. The quality inspection device for transdermal patch production according to claim 1, characterized in that: The front-to-rear spacing between the first set of detection mechanisms and the second set of detection mechanisms and the detection mechanism bearings is smaller than the length of the transdermal patch, and the spacing between the second set of detection mechanisms and the third set of detection mechanism bearings is smaller than the ointment width of the transdermal patch.

5. The quality inspection device for transdermal patch production according to claim 2, characterized in that: The distance between the lower end of the bearing of the front set of detection mechanisms and the upper end of the conveying plate is smaller than the distance between the lower end of the bearing of the two rear sets of detection mechanisms and the upper end of the conveying plate.

6. The quality inspection device for transdermal patch production according to claim 1, characterized in that: The control circuit includes an electrically connected relay, a time control module, and a resistor. The positive power input terminal of the time control module is connected to the relay control power input terminal, the negative power input terminal of the time control module is connected to the negative control power input terminal, the relay negative power input terminal, and one end of the first resistor, and the other end of the first resistor is connected to one end of the second resistor and the positive control power input terminal of the time control module.

7. The quality inspection device for transdermal patch production according to claim 1, characterized in that: The thickness detection circuit has two paths, each path includes an electrically connected resistor, a transistor and a relay, one end of the first resistor is connected to one end of the second resistor and the base of the transistor, the collector of the transistor is connected to the negative power input terminal of the relay, the other end of the second resistor is connected to the emitter of the transistor, and the positive power input terminal of the relay is connected to the control power input terminal.

8. The quality inspection device for transdermal patch production according to claim 7, characterized in that: In the two thickness detection circuits, the normally closed contact end of the relay of the first thickness detection circuit is connected to the normally closed contact end of the relay of the second thickness detection circuit.

9. The quality inspection device for transdermal patch production according to claim 1, characterized in that: The trigger circuit includes an electrically connected relay, a time control module, and a time-controlled switch. The power output end of the time control module is connected to the positive power input end of the relay and the positive power input ends of the two sets of time-controlled switches. The negative power input ends of the two sets of time-controlled switches are connected to the negative power input end of the relay, the negative power input end of the time control module, and the negative control power input end.

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