Dry powder inhaler shell forming mold with strength detection function

Abstract

The invention discloses a dry powder inhaler shell forming mold with a strength detection function, and relates to the technical field of plastic molding.The dry powder inhaler shell forming mold comprises a control system, a feeding system, a screw type conveying system and a rack, a melting barrel is installed on the rack, a forming assembly is installed below the melting barrel, and a detection assembly is installed on one side of the forming assembly; a driving motor is mounted in the melting cylinder, a feeding pipe is connected to the upper end of the melting cylinder, a discharging pipe is connected to the lower end of the melting cylinder, a coil A is arranged on the outer side of the sleeve, the feeding pipe is connected with the feeding system, and the discharging pipe, the screw type conveying system and the forming assembly are connected in series through a pipeline; a spiral cylinder and a conical tray are mounted in the melting cylinder, a sieve plate B is mounted on the outer side of the conical tray, a spiral sheet is arranged on the outer side of the cylinder, and a coil B and a permanent magnet are mounted in the cylinder; the conical tray is matched with the permanent magnet through the coil B to realize vibration and scattering of plastic particles, and the spiral sheet is matched with the coil A to heat the plastic particles and convey the heated plastic particles.

Description

Technical Field

[0001] The invention relates to the technical field of plastic molding, in particular to a dry powder inhaler shell molding die with a strength detection function. Background Art

[0002] The housing of a dry powder inhaler is a container for accessing the penetration assembly and nozzle of the dry powder in a sealed chamber. This housing not only protects the internal components, but also ensures that the dry powder can be effectively inhaled by the patient through the nozzle and penetration assembly. The design of the dry powder inhaler is to improve the delivery efficiency of the drug and ensure that the drug micropowder is inhaled into the lungs in the form of aerosol under the action of the inspiratory airflow, thereby achieving accurate delivery and efficient use of the drug.

[0003] The shell of the dry powder inhaler is made by injection molding, where melted plastic particles are introduced between the upper mold base and the lower mold base, and then cooled and molded. The existing inhaler shell molding mold has the following main problems: (1) Plastic particles are prone to agglomeration and accumulation, resulting in uneven heating of the plastic particles; (2) The plastic particles are not preheated in advance, resulting in a long time for heating the plastic particles, which reduces the injection molding efficiency. Summary of the invention

[0004] The object of the present invention is to provide a dry powder inhaler shell forming die with a strength detection function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a dry powder inhaler shell forming mold with a strength detection function, comprising a control system, a feeding system and a screw conveying system, comprising a frame, a melting barrel is installed on the frame, a forming assembly is installed below the melting barrel, a detection assembly is installed on one side of the forming assembly, a sleeve is sleeved inside the melting barrel, a motor seat is installed above the melting barrel, a driving motor is installed on the motor seat, a feeding pipe is connected to the upper end of the melting barrel, a discharging pipe is connected to the lower end of the melting barrel, a coil A is arranged on the outer side of the sleeve, the coil A is electrically connected to the control system, the feeding pipe is connected to the feeding system, the discharging pipe is connected to the inlet of the screw conveying system, and the outlet of the screw conveying system is connected to the forming assembly through a pipeline; the forming assembly injection molds the inhaler shell, and the detection assembly performs strength detection on the molded inhaler shell.

[0006] The melting cylinder is installed on the frame, and a fixed shaft is vertically arranged in the melting cylinder. A transmission cylinder is hollowly sleeved on the upper side of the fixed shaft. The upper end of the transmission cylinder passes through the melting cylinder and is connected to the output end of the driving motor. A sieve plate A is installed on the transmission cylinder. A spiral cylinder is sleeved on the lower side of the fixed shaft. The fixed shaft and the spiral cylinder are slidingly connected by a spline, and the transmission cylinder and the spiral cylinder are connected by a telescopic plate. A cross bar is arranged on the upper side of the spiral cylinder, and a cylinder is arranged on the lower side of the spiral cylinder. A conical tower plate is installed on the outer side of the cross bar, a sieve plate B is installed on the outer side of the conical tower plate, a spiral sheet is arranged on the outer side of the cylinder, and a coil B and a permanent magnet are installed inside the cylinder; the sieve plates A and B screen the plastic particles, and the conical tower plate realizes the vibration and dispersion of the plastic particles through the cooperation of the coil B and the permanent magnet, and the spiral sheet and the coil A cooperate to heat the plastic particles and then transport them.

[0007] The coil A is located at the lower side of the sleeve, and the coil A is located between the sleeve and the melting cylinder. The spiral sheet is distributed in a spiral line, and a plurality of metal sheets are arranged on the spiral sheet. The plurality of metal sheets are distributed along the spiral line of the spiral sheet, and the plurality of metal sheets are all located in the magnetic field of the coil A.

[0008] The longitudinal section of the conical tray is "V" shaped, and a plurality of preheating plates are arranged on the upper side of the conical tray, and an empty cylinder is arranged on the lower side of the conical tray. An annular groove is arranged on the empty cylinder directly opposite the cross bar, and a plurality of the cross bars are arranged, and a plurality of the cross bars are inserted into the annular groove. A plurality of the preheating plates are electrically connected to the control system. When the preheating plates are energized, resistance heat will be generated, and the heat will be transferred to the plastic particles to achieve preheating treatment of the plastic particles. When the spiral cylinder drives the cross bar to rotate, the cross bar slides in the annular groove, and the cross bar cannot drive the empty cylinder to rotate through the annular groove. When the spiral cylinder drives the cross bar to vibrate up and down, the cross bar drives the empty cylinder and the conical tray to vibrate up and down through the annular groove, and the conical tray drives the sieve plate B to vibrate up and down.

[0009] The interior of the sieve plate A is provided with a sealing plate, which is slidably connected with the transmission cylinder. The sealing plate performs sliding sealing between the sieve plate A and the transmission cylinder, so that the plastic particles cannot fall through the gap between the sieve plate A and the transmission cylinder. The interior of the sieve plate B is installed on a conical tower plate. The sieve plates A and B are both provided with sieves. The sieve aperture on the sieve plate A is larger than the sieve aperture on the sieve plate B. Sliding shafts are provided on the outside of the sieve plates A and B. A limiting groove is provided on the inner wall of the sleeve facing the sliding shaft. The sliding shaft slides in the limiting groove, and the range of up and down vibration of the sieve plates A and B is limited by the sliding shaft and the limiting groove. The middle of the sieve plate A and the opposite end of the middle of the conical tower plate are respectively provided with first magnets with different magnetic properties. When the conical tower plate is driven by the coil B to vibrate up and down, the first magnet on the sieve plate A attracts the first magnet on the conical tower plate, and the sieve plate A vibrates up and down under the action of the attraction.

[0010] The coil B is located above the permanent magnet, and both ends of the coil B are electrically connected to the control system. A column is provided in the middle of the coil B, and the column is installed on the fixed shaft. The outer side of the permanent magnet is installed on the cylinder through a bearing, and the middle part of the permanent magnet is slidably installed on the fixed shaft. The cylinder is made of magnetic shielding material, and the cylinder separates the magnetic fields of the coils A and B. The wire connected to the coil B passes through the middle of the fixed shaft and is connected to the control system.

[0011] The molding assembly includes an upper mold base and a lower mold base, the upper mold base is located above the lower mold base, and the opposite sides of the upper mold base and the lower mold base are respectively provided with grooves and protrusions adapted to the suction device shell, the groove is connected with a feed port, and the feed ports are respectively connected to the outlets of the screw conveying system through pipelines, the upper mold base is connected with a lifting electric cylinder, and the lifting electric cylinder is installed on the frame, and the upper mold base and the lower mold base are respectively provided with spiral flow channels on the opposite sides, and a number of refrigeration plates are installed in each of the spiral flow channels, and the spiral flow channels are distributed in a planar thread to increase the refrigeration area and improve the refrigeration effect. The inlet of each spiral flow channel is connected in series with a vacuum pump and a circulation box through a pipeline, and coolant is stored in the circulation box. The outlet of each spiral flow channel is connected to the circulation box through a pipeline, and the vacuum pump and the circulation box are installed on the frame. A constant pressure valve is installed in the circulation box, and an electromagnetic valve is installed in the pipeline connected to the circulation box. The constant pressure valve makes the pressure in the circulation box constant to ensure the stable transportation of the coolant in the circulation box.

[0012] The sleeve is made of insulation material, and a plurality of temperature difference plates A are installed on the lower inner wall of the sleeve, and a plurality of temperature difference plates B are installed on the inner wall of the circulation box. The temperature difference plates A and B correspond to each other one by one. A magnetic shielding plate is arranged on one side of the temperature difference plate A, and the magnetic shielding plate separates the magnetic field of the coil A so that the magnetic field of the coil A cannot affect the temperature difference plate A. Semiconductors and metal plates of two different materials are arranged on the other side of the temperature difference plate A, the temperature difference plate B and the refrigeration plate, and one end of the semiconductors of the two different materials is connected to the metal plate. The two semiconductors on the temperature difference plate A and the two semiconductors on the temperature difference plate B are connected by wires, one of which is connected to the control system, and the two semiconductors on the refrigeration plate are connected to the control system by wires.

[0013] The telescopic plate is a telescopic structure, and the transmission cylinder drives the spiral cylinder to rotate through the telescopic plate. When the spiral cylinder vibrates up and down, the telescopic plate follows the spiral cylinder to stretch and contract, so as to realize stable power transmission between the transmission cylinder and the spiral cylinder.

[0014] The detection component is a detection electric cylinder and a pressure sensor, the detection electric cylinder is installed on the frame, and the pressure sensor is arranged inside the detection electric cylinder; A movable plate is provided at the lower side of the lower die base, and the movable plate is slidably mounted on the frame through a guide rail, and the guide rail is mounted on the frame. The movable plate is connected to a telescopic rod of a transverse electric cylinder, and the transverse electric cylinder is mounted on the frame. A control panel is mounted on the frame, and the control system is arranged in the control panel. Electromagnetic valves and flow sensors are installed in both the feed pipe and the discharge pipe.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Plastic particles are vibrated and dispersed to make the plastic particles heated more evenly. Coil B continuously generates positive and reverse magnetic fields to make sieve plates A and B vibrate up and down and disperse the plastic particles, so that the dispersed plastic particles can be transported downward faster to prevent blockage, and the dispersed plastic particles are heated more evenly. The frequency of the vibration of the plastic particles driven by sieve plates A and B is directly adjusted by the control system, which is convenient and fast. The frequency of the up and down vibration is determined by the parameters of the alternating current passed into coil B. The higher the frequency of the alternating current, the faster the spiral barrel drives sieve plates A, B and spiral sheets to vibrate up and down.

[0016] 2. The plastic can be screened twice and preheated to reduce the heating time of the plastic particles in the later stage and improve the molding efficiency. After the plastic particles pass through the sieve plate A, they are preheated by the preheating plate to increase the temperature of the plastic particles. After that, the plastic particles are filtered by the sieve plate B and fall on the spiral sheet. The metal sheet on the spiral sheet rotates with the driving motor. The metal sheet cuts the magnetic flux lines in the magnetic field of the coil A, and the metal sheet will heat up. The spiral sheet transports the plastic particles downward and heats the metal sheet to melt the plastic particles. The melted plastic particles are transported from the discharge pipe to the screw conveying system, and quantitatively transported to the upper die seat and the lower die seat through the screw conveying system, which can improve the molding efficiency of the inhaler shell.

[0017] 3. Recycle the heat generated when the plastic particles melt to reduce energy consumption. The plastic particles transfer the heat to the sleeve, and the temperature of the thermoelectric plate A on the sleeve rises. The thermoelectric plate B is located in the circulation box, so the temperature of the thermoelectric plate A is greater than that of the thermoelectric plate B. The Seebeck effect generates current between the thermoelectric plates A and B and transmits it to the control system. After rectification and voltage conversion, the control system is used to cool the refrigeration plate and reduce the energy consumption of the molding mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 yes Figure 1 Schematic diagram of the middle melting cylinder and its internal structure and the installation structure of the drive motor; Figure 3 yes Figure 2 A cross-sectional view of Figure 4 yes Figure 3 A partial enlarged view of the middle A area; Figure 5 yes Figure 3 A three-dimensional image without the melting barrel, feed pipe, motor base and discharge pipe; Figure 6 yes Figure 5 Schematic diagram of the structure after removing the sleeve, coil A, drive motor and transmission cylinder; Figure 7 yes Figure 6 A front view of Figure 8 It is a schematic diagram of the internal structure of the circulation box; Fig. 9 It is a cross-sectional view of the upper die base or the lower die base facing away from the front (the upper side of the upper die base and the lower side of the lower die base are the same as shown in the figure, and the direction of the arrow indicates the direction of coolant flow).

[0019] In the figure: 1. control panel; 11. frame; 12. melting cylinder; 121. sleeve; 122. feed pipe; 123. discharge pipe; 124. temperature difference plate A; 13. coil A; 2. drive motor; 201. fixed shaft; 202. transmission cylinder; 203. telescopic plate; 21. spiral cylinder; 211. cross bar; 212. cylinder; 22. sieve plate A; 221. sieve plate B; 222. sliding shaft; 22 3. Restriction groove; 23. Conical tower plate; 231. Preheating plate; 232. Empty cylinder; 233. First magnet; 24. Spiral sheet; 241. Metal sheet; 25. Coil B; 26. Permanent magnet; 3. Upper die base; 31. Lower die base; 32. Lifting electric cylinder; 33. Spiral flow channel; 34. Refrigeration plate; 35. Circulation box; 36. Temperature difference plate B; 4. Detection electric cylinder; 41. Guide rail; 42. Horizontal electric cylinder. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example: Figure 1-Figure 9As shown, the present invention provides a technical solution of a dry powder inhaler shell forming mold with a strength detection function, including a control system, a feeding system (not shown in the figure), a screw conveying system (not shown in the figure) and a frame 11, a melting barrel 12 is installed on the frame 11, a forming component is installed below the melting barrel 12, a detection component is installed on one side of the forming component, a sleeve 121 is sleeved in the melting barrel 12, a motor seat is installed above the melting barrel 12, a driving motor 2 is installed on the motor seat, a feeding pipe 122 is connected to the upper end of the melting barrel 12, and the melting barrel 12 The lower end is connected with a discharge pipe 123, a coil A13 is arranged outside the sleeve 121, the coil A13 is electrically connected to the control system, the feed pipe 122 is connected to the feed system, the discharge pipe 123 is connected to the inlet of the screw conveying system, and the outlet of the screw conveying system is connected to the molding component through a pipeline; the molding component injection molds the inhaler shell, and the detection component performs strength detection on the molded inhaler shell. The detection component is a detection electric cylinder 4 and a pressure sensor, the detection electric cylinder 4 is installed on the frame 11, and the pressure sensor is arranged inside the detection electric cylinder 4. The feeding system and the screw conveying system are both prior art.

[0022] The melting cylinder 12 is installed on the frame 11, and a fixed shaft 201 is vertically arranged in the melting cylinder 12. A transmission cylinder 202 is hollowly sleeved on the upper side of the fixed shaft 201. The upper end of the transmission cylinder 202 passes through the melting cylinder 12 and is connected to the output end of the driving motor 2. A sieve plate A22 is installed on the transmission cylinder 202. A spiral cylinder 21 is sleeved on the lower side of the fixed shaft 201. The fixed shaft 201 and the spiral cylinder 21 are connected by spline sliding. The transmission cylinder 202 and the spiral cylinder 21 are connected by a telescopic plate 203. The telescopic plate 203 is a telescopic structure. The transmission cylinder 202 drives the spiral cylinder 21 to rotate through the telescopic plate 203, and the telescopic plate 203 follows the spiral cylinder 21 when the spiral cylinder 21 vibrates up and down. Stretching and contraction are performed to achieve stable power transmission between the transmission cylinder 202 and the spiral cylinder 21. A cross bar 211 is arranged on the upper side of the spiral cylinder 21, and a cylinder 212 is arranged on the lower side of the spiral cylinder 21. A conical tower plate 23 is installed on the outer side of the cross bar 211, a sieve plate B221 is installed on the outer side of the conical tower plate 23, a spiral sheet 24 is arranged on the outer side of the cylinder 212, and a coil B25 and a permanent magnet 26 are installed inside the cylinder 212; the sieve plates A22 and B221 screen the plastic particles, the conical tower plate 23 realizes the vibration and dispersion of the plastic particles through the cooperation of the coil B25 and the permanent magnet 26, and the spiral sheet 24 and the coil A13 cooperate to heat the plastic particles and then transport them.

[0023] Coil A13 is located at the lower side of the sleeve 121, and coil A13 is located between the sleeve 121 and the melting cylinder 12. The spiral sheet 24 is distributed in a spiral line, and a plurality of metal sheets 241 are arranged on the spiral sheet 24. The plurality of metal sheets 241 are distributed along the spiral line of the spiral sheet 24, and the plurality of metal sheets 241 are all located in the magnetic field of coil A13.

[0024] The longitudinal section of the conical tray 23 is "V" shaped. A plurality of preheating plates 231 are arranged on the upper side of the conical tray 23, and an empty cylinder 232 is arranged on the lower side of the conical tray 23. An annular groove is arranged on the empty cylinder 232 directly opposite the cross bar 211. A plurality of cross bars 211 are arranged, and a plurality of cross bars 211 are inserted into the annular groove. A plurality of preheating plates 231 are electrically connected to the control system. When the preheating plates 231 are energized, resistance heat is generated and the heat is transferred to the plastic particles to achieve preheating of the plastic particles. When the spiral drum 21 drives the cross bar 211 to rotate, the cross bar 211 slides in the annular groove, and the cross bar 211 cannot drive the empty cylinder 232 to rotate through the annular groove. When the spiral drum 21 drives the cross bar 211 to vibrate up and down, the cross bar 211 drives the empty cylinder 232 and the conical tray 23 to vibrate up and down through the annular groove, and the conical tray 23 drives the sieve plate B221 to vibrate up and down.

[0025] The interior of the sieve plate A22 is provided with a sealing plate, which is slidably connected with the transmission cylinder 202. The sealing plate performs sliding sealing between the sieve plate A22 and the transmission cylinder 202, so that the plastic particles cannot fall through the gap between the sieve plate A22 and the transmission cylinder 202. The interior of the sieve plate B221 is installed on the conical tower plate 23. The sieve plates A22 and B221 are both provided with sieves. The sieve aperture on the sieve plate A22 is larger than the sieve aperture on the sieve plate B221. The outer sides of the sieve plates A22 and B221 are both provided with sliding shafts 222, and the sliding shafts 222 are directly opposite to the sleeves. A limiting groove 223 is provided on the inner wall of the cylinder 121, and the sliding shaft 222 slides in the limiting groove 223, and the up and down vibration range of the sieve plate A22 and the sieve plate B221 is limited by the sliding shaft 222 and the limiting groove 223; the middle of the sieve plate A22 and the opposite end of the middle of the conical tower plate 23 are respectively provided with first magnets 233 with different magnetic properties. When the conical tower plate 23 is driven by the coil B25 to vibrate up and down, the first magnet 233 on the sieve plate A22 attracts the first magnet 233 on the conical tower plate 23, and the sieve plate A22 vibrates up and down under the action of the attraction.

[0026] Coil B25 is located above the permanent magnet 26, and both ends of coil B25 are electrically connected to the control system. A column is provided in the middle of coil B25, and the column is installed on the fixed shaft 201. The outer side of the permanent magnet 26 is installed on the cylinder 212 through a bearing, and the middle part of the permanent magnet 26 is slidably installed on the fixed shaft 201. The cylinder 212 is made of magnetic shielding material, and the cylinder 212 separates the magnetic fields of coil A13 and coil B25.

[0027] The molding assembly includes an upper mold base 3 and a lower mold base 31. The upper mold base 3 is located above the lower mold base 31. The upper mold base 3 and the lower mold base 31 are opposite to each other on one side, and grooves and protrusions adapted to the inhaler housing are respectively provided. The grooves are connected to a feed port, and the feed ports are respectively connected to the outlets of the screw conveying system through pipelines. The upper mold base 3 is connected to a lifting electric cylinder 32, and the lifting electric cylinder 32 is installed on the frame 11. The upper mold base 3 and the lower mold base 31 are opposite to each other on one side, and a spiral flow channel 33 is provided in each spiral flow channel 33. A plurality of refrigeration plates 34 are installed in the spiral flow channel 33. The spiral flow channel 33 is distributed in a plane thread to increase the refrigeration area and improve the refrigeration effect. The inlet of each spiral flow channel 33 is connected in series with a vacuum pump and a circulation box 35 through a pipeline. The circulation box 35 stores coolant. The outlet of the channel 33 is connected to the circulation box 35 through a pipeline. The vacuum pump and the circulation box 35 are installed on the frame 11. A constant pressure valve (not shown in the figure) is installed in the circulation box 35. Solenoid valves (not shown in the figure) are installed in the pipelines connected to the circulation box 35. The constant pressure valve makes the pressure in the circulation box 35 constant to ensure the stable transportation of the coolant in the circulation box 35. A movable plate is arranged on the lower side of the lower mold base 31. The movable plate is slidably installed on the frame 11 through a guide rail 41. The guide rail 41 is installed on the frame 11. The movable plate is connected to the telescopic rod of the transverse electric cylinder 42. The transverse electric cylinder 42 is installed on the frame 11. A control panel 1 is installed on the frame 11. The control system is arranged in the control panel 1. Solenoid valves and flow sensors are installed in the feed pipe 122 and the discharge pipe 123.

[0028] The sleeve 121 is made of thermal insulation material, and a plurality of temperature difference plates A124 are installed on the lower inner wall of the sleeve 121, and a plurality of temperature difference plates B36 are installed on the inner wall of the circulation box 35. The temperature difference plates A124 and B36 correspond to each other one by one. A magnetic shielding plate is arranged on one side of the temperature difference plate A124, and the magnetic shielding plate separates the magnetic field of the coil A13, so that the magnetic field of the coil A13 cannot affect the temperature difference plate A124. Semiconductors and metal plates of two different materials are arranged on the other side of the temperature difference plate A124, the temperature difference plate B36 and the refrigeration plate 34. One end of the semiconductors of the two different materials is connected to the metal plate, and the two semiconductors on the temperature difference plate A124 and the two semiconductors on the temperature difference plate B36 are connected by wires, one of which is connected to the control system, and the two semiconductors on the refrigeration plate 34 are connected to the control system by wires.

[0029] While the metal sheet 241 on the spiral sheet 24 heats the plastic particles, the plastic particles transfer the heat to the sleeve 121, and the temperature of the temperature difference plate A124 on the sleeve 121 increases. The temperature difference plate B36 is located in the circulation box 35, so the temperature of the temperature difference plate A124 is greater than that of the temperature difference plate B36. The current is generated between the temperature difference plate A124 and the temperature difference plate B36 through the Seebeck effect and transmitted to the control system. After rectification and voltage transformation, the control system is used to cool the refrigeration plate 34. When the control system detects that the current generated by the Seebeck effect is small, the control system directly supplies power to the two semiconductors on the refrigeration plate 34.

[0030] The frequency at which the spiral drum 21 drives the sieve plate A22, sieve plate B221 and spiral sheet 24 to vibrate up and down is determined by the parameters of the alternating current passed into the coil B25. The greater the frequency of the alternating current, the faster the spiral drum 21 drives the sieve plate A22, sieve plate B221 and spiral sheet 24 to vibrate up and down.

[0031] Working principle: the staff presses the start button on the control panel 1, the control system opens the solenoid valves in the feed pipe 122 and the discharge pipe 123, the feeding system transports the plastic particles to the sleeve 121 through the feed pipe 122, the flow sensor in the feed pipe 122 feeds data back to the control system, the control system controls the preheating plate 231 to connect to the circuit, the drive motor 2 to rotate and the coil A13 to connect to the circuit, the preheating plate 231 will generate heat after being connected to the circuit, and the coil A13 will generate magnetic fields at both ends after being connected to the circuit; The plastic particles fall downward from the feed pipe 122 onto the sieve of the sieve plate A22, and smaller particles pass through the sieve plate A22 and fall on the preheating plate 231 of the conical tower plate 23. The preheating plate 231 heats the smaller particles, while larger particles cannot pass through the sieve of the sieve plate A22. The heated smaller plastic particles fall on the sieve of the sieve plate B221, and fall on the spiral sheet 24 after being filtered by the sieve plate B221; the driving motor 2 drives the transmission cylinder 202 to rotate, and the transmission cylinder 202 drives the spiral cylinder 21 and the spiral sheet 24 to rotate through the telescopic plate 203, and the metal sheet 241 on the spiral sheet 24 rotates with it. The metal sheet 241 cuts the magnetic flux lines in the magnetic field of the coil A13, and the metal sheet 241 will heat up. The spiral sheet 24 transports the plastic particles downward while heating them through the metal sheet 241 to melt the plastic particles. The melted plastic particles are transported from the discharge pipe 123 to the screw conveying system, and quantitatively transported to the upper mold base 3 and the lower mold base 31 through the screw conveying system.

[0032] When the driving motor 2 drives the spiral drum 21 to rotate, the control system connects the coil B25 to the alternating current, so that the magnetic field at both ends of the coil B25 changes alternately. When the positive phase alternating current is passed through the coil B25 and a positive magnetic field is generated, the positive magnetic field and the magnetic field generated by the permanent magnet 26 repel each other. Under the action of the repulsive force, the permanent magnet 26 drives the cylinder 212 to move downward, and the cylinder 212 drives the spiral drum 21 to move downward. The spiral drum 21 drives the empty drum 232 to move downward through the cross bar 211 and the annular groove, and the empty drum 232 drives The conical tray 23 moves downward, and the first magnet 233 on the conical tray 23 and the outer sieve plate B221 move downward with it. The first magnet 233 on the conical tray 23 and the first magnet 233 on the sieve plate A22 attract each other. Under the action of the attraction, the first magnet 233 on the conical tray 23 pulls the first magnet 233 on the sieve plate A22 to move downward, and the first magnet 233 on the sieve plate A22 drives the sieve plate A22 to move downward with it, so that the sieves and plastic particles on the sieve plates A22 and B221 move downward.

[0033] When reverse-phase alternating current is passed through coil B25, a reverse magnetic field is generated at both ends of coil B25. The reverse magnetic field and the magnetic field generated by the permanent magnet 26 attract each other. Under the action of attraction, the permanent magnet 26 drives the cylinder 212 and the spiral cylinder 21 to move upward. The spiral cylinder 21 drives the empty cylinder 232 and the conical tower plate 23 to move upward through the cross bar 211 and the annular groove. The conical tower plate 23 drives the sieve plate B221 to move upward, and the first magnet 233 on the conical tower plate 23 follows and moves upward. Under the attraction of the first magnet 233 of the conical tower plate 23, the first magnet 233 on the sieve plate A22 moves upward, and the sieves on the sieve plates A22 and B221 drive the plastic particles to move upward.

[0034] The coil B25 continuously generates positive and reverse magnetic fields, causing the sieve plates A22 and B221 to vibrate up and down and break up the plastic particles, so that the broken up plastic particles can be transported downward faster to prevent blockage, and the broken up plastic particles can be heated more evenly.

[0035] When the melted plastic particles enter the screw conveying system from the discharge pipe 123, the flow sensor in the discharge pipe 123 feeds back data to the control system, and the control system drives the upper mold base 3 to contact the lower mold base 31 through the lifting electric cylinder 32, so as to achieve the mold closing of the upper mold base 3 and the lower mold base 31, so that the upper mold base 3 and the lower mold base 31 cooperate to achieve the injection molding of the inhaler shell. After the screw conveying system pressurizes the melted plastic particles, the melted plastic particles are quantitatively conveyed to the feed port of the upper mold base 3 and the lower mold base 31 from the outlet of the screw conveying system through a pipeline. After the melted plastic particles enter the upper mold base 3 and the lower mold base 31 through the feed port, the upper mold base 3 and the lower mold base 31 injection mold the melted plastic particles into the shell of the inhaler according to the time set in advance by the staff.

[0036] When the upper mold base 3 and the lower mold base 31 are injection molding the plastic particles, the control system opens the solenoid valve in the pipeline connecting the circulation box 35, and extracts the coolant in the circulation box 35 into the spiral flow channels 33 of the upper mold base 3 and the lower mold base 31 through the vacuum pump and the pipeline. The refrigeration plate 34 in the spiral flow channel 33 is the refrigeration end of the Peltier effect. The refrigeration plate 34 further cools the coolant through the Peltier effect, so that the cooled coolant flows in the spiral flow channel 33, and is then transported from the outlet of the spiral flow channel 33 and the pipeline to the circulation box 35 to form a cycle. The spiral flow channel 33 and the refrigeration plate 34 allow the cooled coolant to cool the upper mold base 3 and the lower mold base 31, so that the injection-molded inhaler shell between the upper mold base 3 and the lower mold base 31 is cooled and molded.

[0037] After the inhaler shell is injection molded, the control system drives the upper mold base 3 to move upward and reset through the lifting electric cylinder 32, and then the horizontal electric cylinder 42 drives the lower mold base 31 to move to the right, so that the inhaler shell on the lower mold base 31 is located directly below the detection electric cylinder 4, and the control system controls the piston rod of the detection electric cylinder 4 to press the inhaler shell downward according to the set pressure. The pressure sensor in the detection electric cylinder 4 feeds back the pressure data to the control system. When the data of the pressure sensor is greater than or equal to the set data, it is determined that the strength of the inhaler shell meets the requirements. When the data of the pressure sensor is less than the set data, the inhaler shell is pressed downward by the detection electric cylinder 4, and the control system determines that the strength of the inhaler shell does not meet the requirements. The staff will remove the inhaler shells that meet the requirements and those that do not meet the requirements for further processing. The set data is set in advance by the staff through the control panel 1.

[0038] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A dry powder inhaler shell molding die with strength detection function, comprising a control system, a feeding system and a screw conveying system, characterized in that: The invention comprises a frame (11), a melting barrel (12) is mounted on the frame (11), a molding assembly is mounted below the melting barrel (12), a detection assembly is mounted on one side of the molding assembly, a sleeve (121) is sleeved inside the melting barrel (12), a motor seat is mounted above the melting barrel (12), a driving motor (2) is mounted on the motor seat, a feed pipe (122) is connected to the upper end of the melting barrel (12), a discharge pipe (123) is connected to the lower end of the melting barrel (12), a coil A (13) is arranged outside the sleeve (121), the coil A (13) is electrically connected to a control system, the feed pipe (122) is connected to the feed system, the discharge pipe (123) is connected to the inlet of a screw conveying system, and the outlet of the screw conveying system is connected to the molding assembly via a pipeline; the molding assembly performs injection molding on an inhaler shell, and the detection assembly performs strength testing on the inhaler shell after molding; A fixed shaft (201) is vertically arranged in the melting cylinder (12); a driving cylinder (202) is hollowly sleeved on the upper side of the fixed shaft (201); a sieve plate A (22) is installed on the driving cylinder (202); a spiral cylinder (21) is sleeved on the lower side of the fixed shaft (201); a cross bar (211) is arranged on the upper side of the spiral cylinder (21); a cylinder (212) is arranged on the lower side of the spiral cylinder (21); a conical tower plate (23) is installed on the outer side of the cross bar (211); a sieve plate B (221) is installed on the outer side of the conical tower plate (23); a spiral sheet (24) is arranged on the outer side of the cylinder (212); a coil B (25) and a permanent magnet (26) are installed inside the cylinder (212); a plurality of preheating plates (231) are arranged on the upper side of the conical tower plate (23); and the plurality of preheating plates (231) are electrically connected to a control system.

2. A dry powder inhaler shell forming mold with strength detection function according to claim 1, characterized in that: The melting cylinder (12) is mounted on the frame (11); the upper end of the driving cylinder (202) passes through the melting cylinder (12) and is connected to the output end of the driving motor (2); the fixed shaft (201) and the spiral cylinder (21) are slidably connected via a spline; the driving cylinder (202) and the spiral cylinder (21) are connected via a telescopic plate (203); the sieve plate A (22) and the sieve plate B (221) screen the plastic particles; the conical tower plate (23) is used to vibrate and break up the plastic particles by means of the coil B (25) and the permanent magnet (26); the spiral sheet (24) and the coil A (13) are used to heat the plastic particles and then transport them.

3. The dry powder inhaler shell forming mold with strength detection function according to claim 2, characterized in that: The coil A (13) is located at the lower side of the sleeve (121), and the coil A (13) is located between the sleeve (121) and the melting cylinder (12). The spiral sheet (24) is distributed in a spiral line, and a plurality of metal sheets (241) are arranged on the spiral sheet (24). The plurality of metal sheets (241) are distributed along the spiral line of the spiral sheet (24), and the plurality of metal sheets (241) are all located in the magnetic field of the coil A (13).

4. The dry powder inhaler shell forming mold with strength detection function according to claim 3, characterized in that: The conical tower plate (23) has a longitudinal section in a "V" shape. An empty cylinder (232) is provided at the lower side of the conical tower plate (23). An annular groove is provided on the empty cylinder (232) directly opposite the cross bar (211). A plurality of the cross bars (211) are provided, and the plurality of the cross bars (211) are inserted into the annular groove.

5. The dry powder inhaler shell forming mold with strength detection function according to claim 4, characterized in that: A sealing plate is provided inside the sieve plate A (22), and the sealing plate is slidably connected to the transmission cylinder (202). The sealing plate performs sliding sealing between the sieve plate A (22) and the transmission cylinder (202). The interior of the sieve plate B (221) is mounted on a conical tower plate (23). The sieve plates A (22) and B (221) are both provided with sieves. The sieve aperture on the sieve plate A (22) is larger than the sieve aperture on the sieve plate B (221). Sliding shafts (222) are provided outside the sieve plates A (22) and B (221). A limiting groove (223) is provided on the inner wall of the sleeve (121) facing the sliding shaft (222). The sliding shaft (222) slides in the limiting groove (223), and the range of up and down vibration of the sieve plates A (22) and B (221) is limited by the sliding shaft (222) and the limiting groove (223). A first magnet (233) with different magnetic properties is respectively arranged at the middle of the sieve plate A (22) and at the opposite end of the middle of the conical tower plate (23).

6. A dry powder inhaler shell forming mold with strength detection function according to claim 5, characterized in that: The coil B (25) is located above the permanent magnet (26), and both ends of the coil B (25) are electrically connected to the control system. A column is provided in the middle of the coil B (25), and the column is mounted on the fixed shaft (201). The outer side of the permanent magnet (26) is mounted on the cylinder (212) through a bearing, and the middle part of the permanent magnet (26) is slidably mounted on the fixed shaft (201). The cylinder (212) is made of a magnetic shielding material, and the cylinder (212) separates the magnetic fields of the coil A (13) and the coil B (25).

7. A dry powder inhaler shell forming mold with strength detection function according to claim 6, characterized in that: The molding assembly comprises an upper mold base (3) and a lower mold base (31), wherein the upper mold base (3) is located above the lower mold base (31), and a groove and a protrusion adapted to the inhaler housing are respectively provided on opposite sides of the upper mold base (3) and the lower mold base (31), wherein the groove is connected to a feed port, and the feed ports are respectively connected to outlets of a screw conveying system through pipelines, wherein the upper mold base (3) is connected to a lifting electric cylinder (32), and the lifting electric cylinder (32) is installed on a frame (11), and a spiral flow channel (33) is provided on opposite sides of the upper mold base (3) and the lower mold base (31). A plurality of refrigeration plates (34) are installed in each of the spiral flow channels (33), the spiral flow channels (33) are arranged in a planar thread pattern, the inlet of each of the spiral flow channels (33) is connected in series with a vacuum pump and a circulation box (35) via a pipeline, the circulation box (35) stores cooling liquid, the outlet of each of the spiral flow channels (33) is connected to the circulation box (35) via a pipeline, the vacuum pump and the circulation box (35) are installed on the frame (11), a constant pressure valve is installed in the circulation box (35), and a solenoid valve is installed in each of the pipelines connected to the circulation box (35).

8. The dry powder inhaler shell forming mold with strength detection function according to claim 7, characterized in that: The sleeve (121) is made of a thermal insulation material. A plurality of temperature difference plates A (124) are installed on the inner wall of the lower side of the sleeve (121). A plurality of temperature difference plates B (36) are installed on the inner wall of the circulation box (35). The temperature difference plates A (124) and the temperature difference plates B (36) correspond to each other. A magnetic shielding plate is provided on one side of the temperature difference plate A (124). Two semiconductors of different materials and a metal plate are provided on the other side of the temperature difference plate A (124), the temperature difference plate B (36) and the refrigeration plate (34). One end of the semiconductors of different materials is connected to the metal plate. The two semiconductors on the temperature difference plate A (124) and the two semiconductors on the temperature difference plate B (36) are connected by wires, one of which is connected to a control system. The two semiconductors on the refrigeration plate (34) are connected to the control system by wires.

9. A dry powder inhaler shell forming mold with strength detection function according to claim 8, characterized in that: The telescopic plate (203) is a telescopic structure, and the telescopic plate (203) follows the spiral cylinder (21) to stretch and contract.

10. The dry powder inhaler shell forming mold with strength detection function according to claim 9, characterized in that: The detection component comprises a detection electric cylinder (4) and a pressure sensor, the detection electric cylinder (4) is mounted on a frame (11), and the pressure sensor is arranged inside the detection electric cylinder (4); A movable plate is provided at the lower side of the lower die base (31), the movable plate is slidably mounted on the frame (11) via a guide rail (41), the guide rail (41) is mounted on the frame (11), the movable plate is connected to a telescopic rod of a transverse electric cylinder (42), the transverse electric cylinder (42) is mounted on the frame (11), a control panel (1) is mounted on the frame (11), the control system is arranged in the control panel (1), and electromagnetic valves and flow sensors are installed in both the feed pipe (122) and the discharge pipe (123).

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