CN115366385A - Automatic soft capsule production equipment and speed regulation method - Google Patents

Automatic soft capsule production equipment and speed regulation method Download PDF

Info

Publication number
CN115366385A
CN115366385A CN202210905270.1A CN202210905270A CN115366385A CN 115366385 A CN115366385 A CN 115366385A CN 202210905270 A CN202210905270 A CN 202210905270A CN 115366385 A CN115366385 A CN 115366385A
Authority
CN
China
Prior art keywords
gelatin
control system
soft capsule
electric control
thickness
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210905270.1A
Other languages
Chinese (zh)
Inventor
关志杰
张微
徐继宽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Xinhangcheng Science & Technology Development Co ltd
Original Assignee
Beijing Xinhangcheng Science & Technology Development Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Xinhangcheng Science & Technology Development Co ltd filed Critical Beijing Xinhangcheng Science & Technology Development Co ltd
Priority to CN202210905270.1A priority Critical patent/CN115366385A/en
Publication of CN115366385A publication Critical patent/CN115366385A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/02—Combined thermoforming and manufacture of the preform
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J3/00—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms
    • A61J3/07—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms into the form of capsules or similar small containers for oral use
    • A61J3/071—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms into the form of capsules or similar small containers for oral use into the form of telescopically engaged two-piece capsules
    • A61J3/074—Filling capsules; Related operations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J3/00—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms
    • A61J3/07—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms into the form of capsules or similar small containers for oral use
    • A61J3/071—Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms into the form of capsules or similar small containers for oral use into the form of telescopically engaged two-piece capsules
    • A61J3/077—Manufacturing capsule shells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/46—Measuring, controlling or regulating

Abstract

The invention discloses automatic soft capsule production equipment and a speed regulation method, relates to the field of food and medicine equipment manufacturing, and aims to realize automatic soft capsule production. The automatic production equipment for the soft capsules comprises an electric control system, a material liquid filling system, a gelatin belt conveying system and a soft capsule pressing and forming system, wherein the electric control system is respectively connected with the material liquid filling system, the gelatin belt conveying system and the soft capsule pressing and forming system, the gelatin belt conveying system comprises a thickness sensor and is used for measuring the thickness of a conveyed gelatin belt and sending a measured value signal to the electric control system; the gelatin belt conveying system also comprises an angle sensor assembly which is used for measuring the tightness of the conveyed gelatin belt and sending a measured value signal to the electronic control system; and the electric control system is used for receiving and processing the measured value signal, sending a control signal to a motor in the gelatin belt conveying system and adjusting the thickness or the tightness of the gelatin belt. The feed liquid filling system realizes the automatic closing and opening of a filling switch through an electric control system; the soft capsule pressing and forming system is automatically controlled by the electric control system to press or separate the mould.

Description

Automatic soft capsule production equipment and speed regulation method
Technical Field
The invention relates to the technical field of food and medicine equipment manufacturing, in particular to automatic soft capsule production equipment and a speed regulation method.
Background
Soft capsules, also known as soft capsules, are prepared by processing liquid drugs or liquid solid drugs and sealing the processed drugs in soft capsule materials, wherein the soft capsule materials are prepared from gelatin, water, glycerol or other suitable auxiliary materials. Since the eighties of the twentieth century, the soft capsule machine is introduced and produced abroad in China, and the machine type becomes a mainstream product in the Chinese market. The soft capsule machine in the prior art mainly comprises a machine body, gelatin rollers, gelatin boxes, a gelatin pulling roller, a mold, a spraying body, a feeding hopper, a feeding pump, a touch screen, a PLC (programmable logic controller) electrical control system and the like, wherein the gelatin rollers, the gelatin boxes, the gelatin pulling roller and the mold are distributed in a bilateral symmetry manner. Gelatin solution composed of water, gelatin and glycerol is stored in a gelatin box, coated on a gelatin roller through a liquid outlet below the gelatin box, and cooled by rotation to form gelatin belt (also called as gelatin skin), which is fed between a spray body and a mold through a gelatin drawing roller. On the other hand, the feed liquid in the feed hopper is injected into the spray body by the feed pump, and is injected into the die cavity of the open adhesive tape after passing through the spray body with the heating and heat preservation. The spray body is in a heating and heat-preserving state, the gelatin band between the spray body and the die is softened, and the soft capsule filled with the material is cut and bonded by the die to form the finished soft capsule. The soft capsule machine can produce soft capsules with different shapes and sizes by replacing the mould, and the output of the soft capsules can be adjusted by adjusting the rotating speed of the mould.
However, the soft capsule machine in the prior art cannot realize full automation of soft capsule production, and particularly, when the rotating speed of a soft capsule machine die is adjusted, the thickness of the gelatin band is correspondingly changed, so that the thickness value required for pressing soft capsules is not met, and the machine needs to be stopped to adjust the thickness of the gelatin band; the change of the rotating speed of the soft capsule machine mould can also bring about the change of the tightness of the gelatin belt, so that the position of the gelatin belt separating from the gelatin rubber roller is changed, and even the gelatin belt is mixed with the gelatin solution. In addition, when the rotating speed of the die changes, other links also need to be correspondingly adjusted, for example, the on-off state of the spray body switch plate needs to be adjusted, so that the waste of the material liquid is avoided; the temperature of the spray body needs to be adjusted to avoid insufficient or excessive soft capsule joint bonding; the pressing and separating states of the die are adjusted, however, in the prior art, the adjustment of the links is completed through manual operation, the coordination and unification of all production links cannot be achieved, and the defects of large error, repeated adjustment, low efficiency and the like of manual adjustment cannot be avoided.
Disclosure of Invention
The invention aims to provide automatic production equipment of a soft capsule machine, which can automatically detect and adjust the thickness and tightness of a gelatin belt and automatically adjust production equipment links such as the opening and closing state of a spray body, the pressure releasing state of a die and the like aiming at the adjustment change of the rotating speed of the die of the soft capsule machine, thereby realizing the automatic production equipment of the soft capsule machine.
The embodiment of the invention provides automatic soft capsule production equipment, which comprises an electric control system, a material liquid filling system, a gelatin belt conveying system and a soft capsule compression molding system, wherein the electric control system is respectively connected with the material liquid filling system, the gelatin belt conveying system and the soft capsule compression molding system,
the gelatin belt conveying system comprises a thickness sensor, a thickness sensor and an electronic control system, wherein the thickness sensor is used for measuring the thickness of the conveyed gelatin belt and sending a measured value signal to the electronic control system;
the gelatin belt conveying system also comprises an angle sensor assembly which is used for measuring the tightness of the conveyed gelatin belt and sending a measured value signal to the electric control system;
and the electric control system is used for receiving and processing the measured value signal, sending a control signal to a motor in the gelatin belt conveying system and adjusting the thickness or the tightness of the gelatin belt.
Further, the gelatin belt conveying system comprises a gelatin box and a gelatin roll, wherein the upper end of the gelatin box is connected with a motor, a liquid outlet is formed in a gap between the lower end of a front plate of the gelatin box and the gelatin roll positioned below the gelatin box, the motor is used for receiving a control signal sent by the electric control system, and the size of the liquid outlet formed by the relative distance between the front plate of the gelatin box and the gelatin roll is adjusted.
Optionally, the motor is connected with the upper end of the gelatin box front plate and drives the gelatin box front plate to slide up and down relative to the gelatin box body.
Optionally, the motor is connected with the upper end of the gelatin box body and drives the gelatin box body to move up and down relative to the gelatin roller.
Further, the motor is a linear motor or a stepping motor or a servo motor.
Optionally, the thickness sensor is a laser thickness measuring sensor or a displacement sensor or any one of the thickness measuring sensors.
On the other hand, the angle sensor component is positioned above the gelatin roller and comprises an angle sensor and a blocking rod, the angle sensor is connected with the blocking rod through a connecting rod, the blocking rod is overlapped on a gelatin belt separated from the gelatin roller to drive the connecting rod to rotate,
the angle sensor is used for receiving a connecting rod rotation angle signal and transmitting the signal to the electric control system;
and the electric control system is used for receiving the rotation angle signal, performing difference value processing and sending an adjusting signal to a driving motor of the gelatin roller.
Further, the angle sensor is a Hall angle sensor or a potentiometer or a switch type sensor.
On the other hand, feed liquid filling system includes switch board and cylinder, and the cylinder passes through the piston rod and is connected with the switch board, the cylinder is connected with electrical system for receive electrical system's control signal who sends, promote the switch board motion and realize that the injection hole seals or opens.
On the other hand, soft capsule press forming system includes adjacent left mould and right mould, cylinder and leaf spring, and wherein the cylinder passes through piston rod and leaf spring contact, and the leaf spring is pressed in the outside of left mould or right mould front and back axle bed, is equipped with compression spring between the axle bed of left mould and right mould, the cylinder is connected with electrical system for receive the control signal that electrical system sent, promote or retract the motion of leaf spring, compress tightly or break away from with the realization left mould and right mould.
The embodiment of the invention provides a speed regulating method of automatic soft capsule production equipment, which comprises the following steps:
the electronic control system receives a die rotating speed adjusting instruction, sends an instruction to the die speed reducing motor, and gradually adjusts the die rotating speed to a final instruction value; during this period of time, the time when the operation is in progress,
the electric control system sends an instruction to a driving motor of the gelatin box to adjust the thickness of the gelatin band;
the electric control system sends an instruction to a driving motor of the gelatin roller to adjust the rotating speed of the gelatin roller;
the electric control system sends an instruction to the feeding pump to adjust the feeding speed of the feeding pump;
the electric control system sends an instruction to the spray body heating rod to adjust the temperature of the spray body;
the electric control system sends a control instruction to the pill-feeding speed-reducing motor to adjust the speed of the pill-feeding device.
Further, the electric control system receives a die rotation speed adjusting instruction, sends a control signal to the air cylinder of the switch board, closes the switch board until each parameter is adjusted to a set value, and sends a control signal to start the switch board.
According to the technical scheme provided by the embodiment of the invention, the thickness and tightness change conditions of the gelatin belt are detected and adjusted through the electric control system, the sensor and the actuating mechanism, and production links such as a material injection switch and a die clutch mode are automatically regulated, controlled and matched, so that the production and adjustment of the soft capsule are automatically and smoothly carried out. The method solves the problems that the soft capsule machine needs to manually adjust the parameters of all the links when starting up and needs to shut down to manually adjust the parameters of all the links again under the condition of adjusting the rotating speed of the die in the production process in the prior art. Improves the efficiency and quality of soft capsule production and reduces the labor intensity of workers.
Drawings
FIG. 1 is a front view of the whole structure of the automated soft capsule production apparatus of the present invention;
FIG. 2 is a front view of an embodiment of the gelatin band thickness adjusting mechanism of the present invention;
FIG. 3 is a side view of an embodiment of the gelatin band thickness adjusting mechanism of the present invention;
FIG. 4 is a front view of another embodiment of the gelatin band thickness adjusting mechanism of the present invention;
FIG. 5 is a front view of a right gelatin band delivery of the prior art;
FIG. 6 is a side view of a right gelatin band delivery of the prior art;
FIG. 7 is a front view of an embodiment of the automatic tightness detecting and adjusting device for a right gelatin band of the present invention;
FIG. 8 is a side view of an embodiment of the automatic tightness detecting and adjusting device for a right gelatin band of the present invention;
FIG. 9 is a block diagram of an embodiment of a switch plate of the present invention;
FIG. 10 is a block diagram of a soft capsule compression molding system of the prior art;
FIG. 11 is a schematic view of an automatic compression and separation embodiment of the left and right molds of the present invention;
FIG. 12 is a block diagram of the control system of the automated soft capsule production apparatus of the present invention.
In the figure: 1-left gelatin rolling; 2-left gelatin box; 3-levo-Ming adhesive tape; 4-left drawing the rubber roller; 5, a machine head; 6-left mould; 7-spraying the body; 8-a feed pump; 9-material injection pipe; 10-a feeding hopper; 11-right gelatin rolling; 12-body; 13-right gelatin box; 14-dexrazoxane tape; 15-right rubber drawing roller; 16-a touch screen and a PLC electrical control system; 17-right mould; 18-a left sensor assembly; 19-thickness measuring sensors; 20-small cylinder; 21-large cylinder; 22-a switch board; 23-a fixed mount; 24-a leaf spring; 25-a right sensor assembly; 26-material injection state soft capsule; 27-sticky and cut soft capsule; 28-forming into soft capsule; 29-residual mesh glue; 30-gelatin box front plate; 31-a linear motor; 36-a stop lever; 37-hall angle sensor; 38-pressing the reed; 39-gelatin box body.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below. It should be understood that the block diagrams and specific examples are set forth only for the purpose of illustrating the invention and are not to be construed as limiting the invention.
As shown in fig. 1, the present invention provides an embodiment of an automatic soft capsule manufacturing apparatus ("full-automatic soft capsule machine"), which includes a machine body 12, a machine head 5, and a material liquid filling system composed of a feeding hopper 10, a material filling pipe 9, a feeding pump 8 and a spraying body 7, for performing a material liquid filling process from filling, heat preservation to filling into a gelatin belt capsule cavity, wherein the material liquid filling system is installed on the machine head 5 at a middle position of the machine body 12; in addition, the device also comprises a left gelatin belt conveying system and a right gelatin belt conveying system which are symmetrically distributed at two sides of the dividing line by taking the feed liquid filling system as the dividing line, wherein the left gelatin belt conveying system positioned at the left side comprises a left gelatin roller 1, a left gelatin box 2 and a left glue drawing roller 4, the right gelatin belt conveying system positioned at the right side comprises a right gelatin roller 11, a right gelatin box 13 and a right glue drawing roller 15, the left gelatin belt conveying system and the right gelatin belt conveying system are used for carrying out a process of conveying gelatin belts into the die, and because the structure and the movement mode of the left side and the right side are the same, in the specific embodiment, the situation described by taking any side as an embodiment is suitable for the situation of the other side; in addition, the soft capsule compression molding system comprises a left mold 6 and a right mold 17 which are positioned below the spray body 7 and distributed along the left and right of the middle position, and is used for implementing the compression molding process of the soft capsule; furthermore, the device also comprises an electric control system consisting of a touch screen and a PLC (programmable logic controller) electric control system 16, wherein the electric control system is respectively connected with the material liquid filling system, the gelatin belt forming and conveying system and the soft capsule pressing and forming system to realize the purposes of automatically monitoring, controlling, adjusting and the like of the processes of each system. The touch screen in the electric control system is a man-machine interaction means which is adopted for realizing the purpose of conveniently inputting and displaying data, and can be completely replaced by other separated input and display equipment, such as a notebook computer, and the purpose of electric control can be completely realized by adopting the separated equipment as long as the communication with the PLC is set.
In the production process of the soft capsule, the output can be improved by increasing the rotating speed of the die, and the rotating speed of the gelatin roller is increased along with the increase of the rotating speed of the die, so that the thickness of the gelatin belt is thinned; in addition, the tightness of the gelatin band also needs to be adjusted and controlled at any time in the production process, and therefore, the left sensor assembly 18, the right sensor assembly 25 and the thickness measuring sensor 19 are arranged in the left and right gelatin band conveying systems to realize automatic detection and adjustment of the thickness and the tightness of the gelatin band.
As shown in fig. 1, a thickness measuring sensor 19 may be disposed at any position on the gelatin band conveying path between the left glue drawing roller 4 and the left mold 6, or at any position on the gelatin band conveying path between the right glue drawing roller 15 and the right mold 17, or at any position on both side paths, for measuring the thickness of the gelatin band, and the thickness measuring sensor 19 is connected to the electric control system, i.e., the touch screen and the PLC electric control system 16, through a cable or other electric connection material, and sends the measurement result to the touch screen and the PLC electric control system 16 at any time. The thickness measuring sensor 19 may be a non-contact sensor, such as a laser thickness sensor, a capacitance thickness sensor, etc., or a contact sensor, such as a displacement sensor, and when using the contact sensor, the sensor is usually disposed above the glue conveying roller through which the gelatin band passes, and the preferred position is above the glue conveying roller or the detection roller close to the mold, and the gelatin band has a thickness closest to the soft capsule pressing.
As shown in fig. 2 and 3, in the embodiment of the gelatin belt thickness adjusting device provided by the invention, the gelatin box body is fixed on the machine body 12, the linear motor 31 is connected with the gelatin box front plate 30 through an output shaft, the linear motor 31 is connected with the electric control system, namely the touch screen and the PLC electric control system 16, and receives an indication signal of the electric control system, and the linear motor extends out of the shaft to move up and down, so that the gelatin box front plate 30 is driven to slide up and down, the distance between the gelatin box front plate 30 and the left and right gelatin rollers is changed, and the purpose of adjusting the thickness of gelatin is achieved. The linear motor 31 may be replaced with a servo motor or a stepping motor, and in order to prevent the gelatin solution from leaking when the gelatin box front plate 30 slides, a pressing reed 38 may be provided on the gelatin box front plate 30 to press the gelatin box front plate 30 against the gelatin box case 39.
As shown in fig. 4, the present invention provides another embodiment of a gelatin band thickness adjusting device, wherein an output end of a linear motor 31 is fixedly connected with a gelatin box body 39 through a screw, the linear motor 31 is fixedly connected with a machine head 5 or a machine body 12, and the gelatin box body is movably connected with the machine head 5 or the machine body 12, for example, through a slide rail and slide block structure, after receiving an indication signal of an electric control system, the direct motor 31 drives the gelatin box body 39 to slide up and down, so as to change a distance between a gelatin solution outlet below the gelatin box and a gelatin roller, thereby adjusting the thickness of the gelatin band.
In this embodiment, the electronic control system is responsible for receiving and processing the detection signals sent by all the detection instruments, and the processing steps are as follows:
the thickness measuring sensor 19 measures the thickness value of the gelatin belt and transmits the gelatin belt thickness value to the touch screen and PLC electrical control system 16;
the touch screen and the PLC electric control system 16 receive the measured gelatin band thickness value, compare the gelatin band thickness value with a set gelatin band thickness value, if the gelatin band thickness value obtained by measurement exceeds a threshold value range preset by the system, calculate a difference value and send an adjusting signal to the linear motor 31;
the linear motor 31 rotates to drive the gelatin box front plate 30 or the gelatin box body to move, and the thickness of the gelatin belt is adjusted;
the thickness measuring sensor 19 measures the thickness value of the gelatin belt and transmits the gelatin belt thickness value to the touch screen and PLC electrical control system 16;
the touch screen and the PLC electrical control system 16 receive the measured gelatin strip thickness value, compare the measured gelatin strip thickness value with the set gelatin strip thickness value, and if the measured gelatin strip thickness value is within the preset thickness value range, send a stop signal to the linear motor 31, and end the gelatin strip adjusting process.
According to the invention, the electric control system is used for receiving and processing the gelatin belt thickness signal sent by the thickness sensor, and the distance between the gelatin solution outlet below the gelatin box and the gelatin roller is adjusted, so that the thickness of the gelatin belt is accurately and rapidly adjusted.
Variations in the speed of rotation of the die may not only cause variations in the thickness of the gelatin band, but may also result in variations in the tightness of the gelatin band. Fig. 5 and 6 show the condition of right gelatin belt conveying in the prior art, and the condition of left gelatin belt conveying is similar to the right gelatin belt conveying, and is not described again. The gelatin solution in the right gelatin box 13 is firstly uniformly coated on the right gelatin roll 11, is gradually cooled along with the rotation of the right gelatin roll 11 to form a right gelatin belt 14, is pulled by a right gelatin pulling roller 15 to be separated from the right gelatin roll 11, and is conveyed towards the right die 17 and the spray body 7. In the process, the rotation speed of the right gelatin roller 11 and the mold 7 are matched with each other to maintain the degree of tightness of the right gelatin belt 14 within a proper range. However, the tightness of the gelatin belt is often changed due to various reasons, for example, the rotation speed of the mold is changed, or the separation position is changed when the right gelatin belt 14 is separated from the right gelatin roller 11 due to different viscosity and freezing force of the gelatin solution, so that the right gelatin belt 14 to be separated continuously moves along with the rotation of the right gelatin roller 11 and is mixed with the gelatin solution; or prematurely break off the right gelatin roll 11.
As shown in fig. 7 and 8, the present invention provides an embodiment of an automatic tightness detecting and adjusting device for a right gelatin band, and the automatic tightness detecting and adjusting device for a left gelatin band is the same as the above, and is not repeated herein. The right sensor assembly 25 is positioned above the right rubber roller 11 and consists of a Hall angle sensor 37 and a stop lever 36, wherein the Hall angle sensor 37 is positioned at one end of the right sensor assembly 25 and is fixedly connected with the right rubber roller 15; the stop lever 36 is located at the other end of the right sensor assembly 25, is in a free moving state with a certain space away from the upper part of the right gelatin roll 11, and forms a swing rod structure with one fixed end. The right gelatin belt 14 penetrates through the middle of the blocking rod 36 and the right gelatin pulling roller 15, the blocking rod 36 is movably lapped on the right gelatin belt 14, when the position of the right gelatin belt 14, which is separated from the right gelatin roller 11, changes, the blocking rod 36 rotates along with the movement of the right gelatin belt 14, the blocking rod 36 rotates to drive the Hall angle sensor 37 to rotate, the Hall angle sensor transmits a rotation angle signal to the touch screen and the PLC electrical control system 16, the touch screen and the PLC electrical control system 16 compare the rotation angle signal with a preset normal angle range value, a difference value is calculated, an instruction is sent to a motor driving the right gelatin roller 11 to rotate, and the rotation speed of the right gelatin roller 11 is adjusted, so that the tightness of the right gelatin belt 14 is changed, and the soft capsule production is normally performed. Those skilled in the art will appreciate that the angle sensor herein includes contact potentiometers and non-contact potentiometers, and other existing laser, infrared and ultrasonic proximity switch type sensors can be selected.
According to the invention, the tightness measuring device of the gelatin belt is arranged on the gelatin belt conveying path, the angle change value is obtained in time through the precision Hall sensor, the signal is transmitted to the electric control system, the electric control system sends an instruction to the driving motor to adjust the rotating speed of the gelatin roller, so that the tightness of the gelatin belt is kept in a proper range, and automatic, accurate and rapid adjustment is realized.
In conjunction with the gelatin belt conveyor system, the feed liquid filling system also requires automation of the filling process. As shown in fig. 9, the present invention provides an embodiment of a switch board of an automatic soft capsule production apparatus. The small cylinder 20 is fixedly connected with the switch board fixing board through the fixing frame 23, a piston rod of the small cylinder 20 is connected with the switch board 22, when other work preparations of the full-automatic soft capsule machine for pressing the soft capsule are finished and a feed liquid needs to be injected into the soft capsule cavity, an electric control system of the soft capsule machine, namely a touch screen and a PLC (programmable logic controller) electric control system 16 sends an electric signal to the small cylinder 20 to control the piston rod of the small cylinder 20 (the execution mechanism comprises a linear motor) to stretch out, the piston rod pushes the switch board 22 to move inwards, so that a medicine injection hole is opened, and the feed liquid is injected into the soft capsule through the switch board by the feed pump 8 to finish the injection of the soft capsule; when the production of the soft capsules needs to be stopped, the electric control system sends an electric signal to control the piston rod of the small air cylinder 20 (the actuating mechanism comprises a linear motor) to retract, the piston rod pulls the switch plate 22 to move outwards, so that the medicine injection hole is closed, and the material liquid does not inject the materials into the soft capsules any more. Therefore, the opening and closing of the switch board 22 can be automatically controlled through a PLC control program, so that the automatic program operation of the soft capsule machine is realized, and the skilled person can understand that the actuating mechanism is an air cylinder, and can also select a mechanism capable of realizing linear motion, such as a servo linear motor, a stepping linear motor, an electric cylinder and the like.
The gelatin belt capsule material conveyed by the gelatin belt conveying system and the feed liquid injected by the feed liquid injection system finally form finished soft capsules under the action of the soft capsule compression molding system, as shown in fig. 10, which shows the structure diagram of the soft capsule compression molding system in the prior art, the left gelatin belt 3 is sent between the left die 6 and the injection body 7, meanwhile, the right gelatin belt 14 is sent between the right die 17 and the injection body 7, as the injection body 7 is in a heating and heat-preserving state, the gelatin belt between the injection body 7 and the left and right dies is softened and is pressed out of the capsule material cavity according to the shape of the die cavity, the feed liquid in the injection body 7 is injected into the formed capsule material cavity, and is finally separated along with the rotation of the left and right dies. When the left die 6 and the right die 17 are in a compaction state, soft capsules are pressed; when the left mold 6 and the right mold 17 are separated, the soft capsule is stopped from being compressed.
As shown in fig. 11, the present invention provides an embodiment in which the molds are automatically compressed and separated. The left die 6 and the right die 17 are respectively arranged on a bearing seat through rotating shafts, a compression spring is arranged between shaft seats, a piston rod of the large cylinder 21 presses a plate spring 24, and the plate spring 24 presses the shaft seat where the left die 6 is located. When soft capsules are pressed, the electric control system, namely the touch screen and the PLC electric control system 16 send control signals to the large air cylinder 21, the large air cylinder 21 pushes the piston rod, the piston rod moves forwards to press the plate spring 24, the plate spring 24 is pressed to push the left mould 6 to press the right mould 17, and the soft capsules begin to be pressed; when the soft capsule pressing needs to be stopped, the electric control system 16 sends a signal to the large cylinder 21, the large cylinder 21 retracts the piston rod, the piston rod is separated from the plate spring 24, the plate spring 24 is separated from the left die 6, the left die 6 is separated from the right die 17 under the action of the spring force between the shaft seats, and the soft capsule pressing is stopped. Thus, the PLC software program can automatically control the mold to compress and separate, and the automatic operation of the soft capsule machine is realized. In the same principle, the large cylinder 21 and the plate spring 24 can also be placed on one side of the right die 17 to press the shaft seat where the right die 17 is located.
The above feed liquid filling system, the gelatin belt conveying system and the soft capsule pressing and forming system are uniformly coordinated under the control of the electric control system, as shown in fig. 12, the invention provides a frame diagram of a control system of soft capsule automatic production equipment. The touch screen and the PLC electric control system are the center of the whole control system, the touch screen is used for realizing man-machine interaction, workers input and adjust the rotating speed of the die through the touch screen, and the electric control system automatically adjusts and matches parameters required by each system.
When the production preparation work is carried out, a worker puts gelatin into a gelatin supply barrel, a feed liquid is put into the feed barrel, a soft capsule machine is started to produce after the rotating speed of a mould is set, an electric control system sends a control signal to a motor driving a gelatin roller (the gelatin roller) according to a design program to drive the gelatin roller to rotate, the gelatin liquid in the gelatin box is coated on the gelatin roller, the gelatin liquid is cooled and formed and is upwards transmitted to the middle of the mould and a spray body, a gelatin elasticity detection mechanism transmits a gelatin elasticity signal to the electric control system, the electric control system compares the gelatin liquid with a preset threshold value and sends a control signal to the motor driving the gelatin roller to adjust the rotating speed of the gelatin roller; the thickness measuring sensor transmits a rubber thickness signal to the electric system, and the electric control system design program sends a control signal to a motor on the gelatin box to control the thickness of the gelatin band.
The electric control system sends out control signals to the spray body heating rod according to a design program to control the temperature of the spray body so as to ensure that the soft capsules are correctly bonded.
The design program of the electric control system sends a control signal to the die pressing cylinder, the die is pressed or loosened through the die pressing mechanism, the die presses the capsule when the die is pressed, and the soft capsule stops being pressed when the die is loosened.
Similarly, the design program of the electric control system sends a control signal to the feeding pump to control the amount of the material liquid, sends a control signal to the air cylinder connected with the switch plate, opens the switch plate to enable the material liquid to flow into the spraying body, closes the switch plate, and stops injecting the material liquid into the spraying body.
The electric control system sends a control signal to the lower pill speed reducing motor to control the speed increasing or reducing of the lower pill device.
In order to realize production automation, the sequence and the speed of the steps are set and matched by an electric control system according to a design program.
When the rotating speed of the die changes, the thickness or the tightness of the gelatin band also changes, a certain time is needed for detection and adjustment, the thickness of the gelatin band may not meet the requirement for soft capsule pressing in the period of time, at the moment, after the electronic control system receives a die rotating speed adjustment instruction, the electronic control system firstly sends a control signal to an air cylinder connected with a switch board, the switch board is closed, until each parameter is adjusted to a proper value, the electronic control system sends a control signal again, the switch board is opened, and the working procedures of material liquid injection and soft capsule pressing are recovered. Specific steps and methods for adjusting parameters can be found in the following examples.
The invention also provides another adjusting mode, when the rotating speed of the die is adjusted, the rotating speed of the die is slowly changed, the switch board is always in an opening state, and all parameters are adjusted in a flexible mode until the speed change of the die is reasonably matched. The method comprises the following specific steps:
the touch screen and the PLC electric control system receive a mold rotating speed change instruction, send a control instruction to the mold speed reducing motor, and gradually adjust the mold rotating speed value in stages until the instruction value is finally reached;
during the gradual adjustment of the rotating speed of the die, the electric control system simultaneously detects and adjusts other system parameters,
the touch screen and the PLC electric control system receive a gelatin strip thickness value signal sent by the thickness measuring sensor, send a control instruction to a driving motor of the gelatin box and adjust the thickness of the gelatin strip;
the touch screen and the PLC electric control system receive an angle value signal sent by the angle sensor, send a control instruction to the gelatin roller driving motor and adjust the gelatin roller rotating speed;
the touch screen and the PLC electric control system send instructions to the feeding pump to adjust the feeding speed of the feeding pump;
the touch screen and the PLC electric control system send an instruction to the spray body heating rod to adjust the temperature of the spray body;
the touch screen and the PLC electric control system send control instructions to the pill-dropping speed-reducing motor to adjust the speed of the pill-dropping device.
The soft capsule machine in the prior art basically depends on manual operation and intermittent operation modes during production and rotation speed adjustment, the scheme of the invention detects and adjusts the thickness and tightness change conditions of the gelatin band through an electric control system, automatically regulates and matches the material injection and die clutch modes, and adjusts and controls parameters of each production link, thereby realizing the automatic and smooth production and adjustment of the soft capsule.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (12)

1. An automatic production device of soft capsules comprises an electric control system, a material liquid filling system, a gelatin belt conveying system and a soft capsule pressing and forming system, wherein the electric control system is respectively connected with the material liquid filling system, the gelatin belt conveying system and the soft capsule pressing and forming system,
the gelatin belt conveying system comprises a thickness sensor, a thickness sensor and an electronic control system, wherein the thickness sensor is used for measuring the thickness of the conveyed gelatin belt and sending a measured value signal to the electronic control system;
the gelatin belt conveying system also comprises an angle sensor assembly which is used for measuring the tightness of the conveyed gelatin belt and sending a measured value signal to the electric control system;
and the electric control system is used for receiving and processing the measured value signal, sending a control signal to a motor in the gelatin belt conveying system and adjusting the thickness or the tightness of the gelatin belt.
2. The automatic soft capsule production equipment of claim 1, wherein the gelatin belt conveying system comprises a gelatin box and a gelatin roller, wherein the upper end of the gelatin box is connected with a motor, a liquid outlet is formed by a gap between the lower end of the gelatin box front plate and the gelatin roller positioned below the gelatin box front plate, and the motor is used for receiving a control signal sent by the electric control system and adjusting the size of the liquid outlet formed by the relative distance between the gelatin box front plate and the gelatin roller.
3. The automatic soft capsule production equipment of claim 2, wherein the motor is connected with the upper end of the gelatin box front plate to drive the gelatin box front plate to slide up and down relative to the gelatin box body.
4. The automatic soft capsule production equipment of claim 2, wherein the motor is connected with the upper end of the gelatin box body to drive the gelatin box body to move up and down relative to the gelatin roller.
5. The automatic soft capsule production equipment of claim 2,3 or 4, wherein the motor is a linear motor or a stepping motor or a servo motor.
6. The automatic soft capsule production equipment according to claim 1, wherein the thickness sensor is a laser thickness measuring sensor or a displacement sensor or any one of thickness measuring sensors.
7. The automatic soft capsule production equipment of claim 1, wherein the angle sensor assembly is located above the gelatin roller and comprises an angle sensor and a blocking rod, the angle sensor is connected with the blocking rod through a connecting rod, the blocking rod is overlapped on a gelatin belt separated from the gelatin roller and drives the connecting rod to rotate,
the angle sensor is used for receiving a connecting rod rotation angle signal and transmitting the signal to the electric control system;
and the electric control system is used for receiving the rotation angle signal, performing difference value processing and sending an adjusting signal to a driving motor of the gelatin roller.
8. The automatic soft capsule production equipment of claim 7, wherein the angle sensor is a Hall angle sensor or a potentiometer or a switch type sensor.
9. The automatic soft capsule production equipment of claim 1, wherein the feed liquid filling system comprises a switch board and a cylinder, the cylinder is connected with the switch board through a piston rod, and the cylinder is connected with the electronic control system and used for receiving a control signal sent by the electronic control system and pushing the switch board to move to close or open the drug injection hole.
10. The automatic soft capsule production equipment of claim 1, wherein the soft capsule pressing and forming system comprises a left mold and a right mold which are adjacent to each other, a cylinder and a plate spring, wherein the cylinder is in contact with the plate spring through a piston rod, the plate spring presses the outer sides of the front and rear shaft seats of the left mold or the right mold, a compression spring is arranged between the shaft seats of the left mold and the right mold, and the cylinder is connected with the electric control system and is used for receiving a control signal sent by the electric control system and pushing or retracting the plate spring to move so as to press or separate the left mold and the right mold.
11. A speed regulation method of automatic soft capsule production equipment comprises the following steps:
the electronic control system receives a die rotating speed adjusting instruction, sends the instruction to a die speed reducing motor, and gradually adjusts the die rotating speed to a final instruction value; during the period of time in which the air conditioner is in operation,
the electric control system sends an instruction to a driving motor of the gelatin box to adjust the thickness of the gelatin band;
the electric control system sends an instruction to a driving motor of the gelatin roller to adjust the rotating speed of the gelatin roller;
the electric control system sends an instruction to the feeding pump to adjust the feeding speed of the feeding pump;
the electric control system sends an instruction to the spray body heating rod to adjust the temperature of the spray body;
the electric control system sends a control instruction to the pill-dropping speed-reducing motor to adjust the speed of the pill-dropping device.
12. The method of claim 11, wherein the electronic control system receives a mold speed adjustment command, sends a control signal to the cylinder of the switch plate, closes the switch plate until the parameters are adjusted to the set values, and sends a control signal to open the switch plate.
CN202210905270.1A 2022-07-29 2022-07-29 Automatic soft capsule production equipment and speed regulation method Pending CN115366385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210905270.1A CN115366385A (en) 2022-07-29 2022-07-29 Automatic soft capsule production equipment and speed regulation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210905270.1A CN115366385A (en) 2022-07-29 2022-07-29 Automatic soft capsule production equipment and speed regulation method

Publications (1)

Publication Number Publication Date
CN115366385A true CN115366385A (en) 2022-11-22

Family

ID=84063632

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210905270.1A Pending CN115366385A (en) 2022-07-29 2022-07-29 Automatic soft capsule production equipment and speed regulation method

Country Status (1)

Country Link
CN (1) CN115366385A (en)

Similar Documents

Publication Publication Date Title
EP3331767B1 (en) Packaging machine having a process-controlled early start function
US6186765B1 (en) Apparatus for forming a molded multilayer product
JPH09117942A (en) Method for introducing plastic material into mold cavity of molding apparatus and controlling flow of said material
CN112218751A (en) Method for simultaneous closed-loop control of gas assist and gas back-pressure during injection molding in relation to plastic melt pressure and plastic melt flow position
CN111844689A (en) Production line intelligent linkage control mode of extrusion molding equipment
CZ280495B6 (en) Process of luminescent screen moulding and apparatus for making the same
CN101001732B (en) Apparatuses and methods for producing objects
CN218227815U (en) Automatic soft capsule production equipment
JPH04244224A (en) Method and device for mixing blended substances and thermoplastic artificial material
CN115366385A (en) Automatic soft capsule production equipment and speed regulation method
CN101804679A (en) Apparatus for transferring doses and dosage
CN101394980A (en) Foamed resin molding machine and method of operating the same
KR0170750B1 (en) Method of detecting injected amount from an injection molder
US5679293A (en) Method of making extrudate blanks
US20230041317A1 (en) Systems and approaches for controlling an injection molding machine
JPS5917931B2 (en) Method and device for molding plastic materials
CN205396602U (en) Full -automatic liquid douche bag system bag filling and sealing machine
JPH03208B2 (en)
CA2103269C (en) Device for and method of molding for injection molding machine
JPH03236917A (en) Press-molding device and method for thermoplastic resin
CN210525558U (en) Cold feed extruder
WO2023244723A1 (en) Systems and approaches for manufacturing parts
CN219381551U (en) Quantitative extrusion device for molten materials
CN102358027B (en) Single mold one-step forming system and single mold one-step forming method
JP4836742B2 (en) Foam molding machine and operation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination