Air supply equipment of blowing, filling and sealing all-in-one machine and air supply system of air supply equipment

Abstract

According to the air supply equipment of the blowing, filling and sealing all-in-one machine and the air supply system of the air supply equipment, the air supply system integrates the valve seat, the servo valve, the switch valve and the throttling valve together, high integration level and compact design are achieved, and therefore the possibility of air leakage and faults is reduced. The precise gas control capability improves the operation precision, and optimizes the gas flow efficiency at the same time. Compared with a traditional system, the design simplifies the maintenance process, saves the space, improves the safety of the system, and is particularly suitable for an application environment which is limited in space and needs high-precision control. And the gas supplementing equipment can ensure the uniformity of the wall thickness of the product by accurately controlling the amount of gas entering the hollow pipe blank, so that the product quality is obviously improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pharmaceutical equipment, and in particular relates to air replenishing equipment of a blowing, filling and sealing integrated machine and a gas supply system thereof. Background Art

[0002] In the modern pharmaceutical and food packaging industry, the BFS machine has become an important equipment for producing plastic packaging containers due to its high efficiency and aseptic operating environment. This equipment continuously extrude plastic tubes, and then blow, fill and seal them to form sealed plastic containers. However, the BFS machine of the prior art has some limitations in the tube forming process.

[0003] Specifically, during the extrusion process, the plastic tube embryo needs to be fed with gas to achieve sterile protection and support to prevent it from being contaminated or collapsed. This step has strict requirements on the pressure and flow of the gas. However, in traditional blow-fill-seal machines, the control of the gas supply pressure and flow is not precise, and real-time monitoring and adjustment are usually not possible. This lack of control will lead to unstable gas volume inside the tube embryo, which in turn affects the uniformity of the wall thickness of the plastic product, resulting in uneven product quality and reducing the sealing performance and safety of the container.

[0004] In order to solve this problem, the industry has conducted a lot of research and attempts. Some improvement measures focus on improving the automation level of the equipment, and by introducing advanced sensors and control systems to monitor the air supply pressure and flow of the tube embryo in real time. However, these improvement measures are often accompanied by an increase in equipment costs, and there may be response delays in actual operations, which cannot meet the needs of high-precision control.

[0005] In addition, equipment maintenance and calibration are also a problem in the existing technology. Due to the lack of an automated maintenance system, the long-term stable operation of the equipment is difficult to ensure, which indirectly affects the accuracy of tube embryo gas replenishment. As the equipment is used for a longer time, mechanical wear and calibration deviations will gradually accumulate, eventually leading to reduced production efficiency and product quality.

[0006] Therefore, it is urgent to invent a gas replenishing device for a blow-fill-seal machine and a gas supply system thereof to effectively solve at least one of the above-mentioned technical problems. Utility Model Content

[0007] The utility model aims to provide an air supply device for a blowing, filling and sealing machine and a gas supply system thereof, so as to effectively solve the technical problem that the air intake of the tube embryo is unstable during the production of the traditional blowing, filling and sealing machine, resulting in uneven wall thickness of the produced plastic products.

[0008] In order to achieve the above object, the utility model provides a gas supply system, characterized in that it includes:

[0009] A valve seat having an air inlet and a working port;

[0010] A servo valve connected to the valve seat via a ventilation pipe;

[0011] A switch valve, mounted on the valve seat, for adjusting the amount of gas entering the hollow tube embryo;

[0012] A throttle valve is installed on the valve seat and connected to the vent pipe.

[0013] Furthermore, the gas supply system also includes: a pressure reducing valve installed on the valve seat; and a pressure sensor installed on the valve seat.

[0014] Furthermore, a muffler is provided on the servo valve.

[0015] The utility model also provides a gas supply device for a blow-fill-seal integrated machine, which is characterized by comprising the gas supply system as described above, for supplying gas to the hollow tube embryo; and further comprising:

[0016] Detection system, used to detect the change of the outer diameter of the hollow tube embryo;

[0017] A control system is connected to the gas supply system and the detection system, and is used to control the gas supply amount of the gas supply system according to the detection result of the detection system.

[0018] Furthermore, the detection system includes: a detection sensor for detecting the distance between the outer diameter of the hollow tube embryo and the detection sensor.

[0019] Furthermore, the gas supply device of the filling and sealing machine also includes: a die head connected to the gas supply system and used to extrude the hollow tube embryo; a mold used to clamp the bottom of the hollow tube embryo to seal the hollow tube embryo.

[0020] Furthermore, the control system includes a computer processor for receiving signals from the detection system and controlling the gas supply system.

[0021] Furthermore, the control system also includes: a gas flow regulating unit connected to the control system, used to regulate the gas flow entering the hollow tube embryo according to the instructions of the control system; a gas pressure regulating unit connected to the control system, used to regulate the gas pressure entering the hollow tube embryo according to the instructions of the control system.

[0022] Furthermore, the gas supply device of the filling and sealing machine also includes: a display unit, connected to the control system, for displaying the outer diameter data and gas supply parameters of the tubular formed body in real time; an alarm unit, connected to the control system, for issuing an alarm when the outer diameter of the hollow tube embryo exceeds a preset range.

[0023] Compared with the prior art, the beneficial effects of the utility model are mainly reflected in: a gas supply device for a blow-fill-seal integrated machine and its gas supply system. The gas supply system integrates the valve seat, servo valve, switch valve and throttle valve together to achieve high integration and compact design, thereby reducing the possibility of leakage and failure. By accurately controlling the amount of gas entering the hollow tube embryo, the uniformity of the product wall thickness can be ensured, and the product quality can be significantly improved. At the same time, it has a high degree of automation and a fast response speed, which greatly improves production efficiency and reduces the error of manual operation, thereby reducing the use cost of the equipment and having significant economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front schematic diagram of a gas supply system according to a first embodiment of the utility model;

[0025] Figure 2 For this utility model Figure 1 A partial enlarged view of the

[0026] Figure 3 This is a schematic diagram of another viewing angle of the gas supply system of the first embodiment of the utility model;

[0027] Figure 4 This is a schematic diagram of another viewing angle of the gas supply system of the first embodiment of the utility model;

[0028] Figure 5 It is a top view schematic diagram of a gas supply system in Embodiment 1 of the present utility model;

[0029] Figure 6 This is a three-dimensional schematic diagram of a gas supply system according to a first embodiment of the present utility model;

[0030] Figure 7 This is a schematic diagram of the working principle of the air replenishing device of the second embodiment of the utility model.

[0031] In the figure, 1. servo valve; 2. pressure sensor; 3. switch valve; 4. pressure reducing valve; 5. throttle valve; 6. valve seat; 7. die head; 8. hollow tube embryo; 9. mold; 10. detection sensor; 11. air inlet; 12. working port. DETAILED DESCRIPTION

[0032] The following will be described in more detail with reference to the accompanying drawings, which show the preferred embodiments of the present invention. It should be understood that those skilled in the art can modify the present invention described herein and still achieve the beneficial effects of the present invention. Therefore, the following description should be understood as being widely known to those skilled in the art and not as a limitation to the present invention.

[0033] In the description of this specification, "one embodiment" or "some embodiments" etc. means that one or more embodiments of this specification include a specific feature, structure or characteristic described in conjunction with the embodiment. Therefore, the phrases "in one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways.

[0034] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in very simplified form and in non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0035] Embodiment 1

[0036] Please refer to Figure 1 The present embodiment provides a gas supply system for supplying gas to a hollow tube embryo, comprising: a valve seat 6 having an air inlet 11 and a working port 12; a servo valve 1 connected to the valve seat 6 via a ventilation pipe; a switch valve 3 installed on the valve seat 6 for adjusting the amount of gas entering the hollow tube embryo; a throttle valve 5 installed on the valve seat 6 and connected to the ventilation pipe.

[0037] Specifically, Figure 1-Figure 6 As shown, the gas supply system also includes a pressure reducing valve 4 and a pressure sensor 2. The valve seat 6 is fixed on the equipment frame (not shown in the figure), and has an air inlet 11 and a working port 12. The pressure reducing valve 4 and the pressure sensor 2 are respectively screwed into the internal threaded holes of the valve seat 6, and the switch valve 3 and the throttle valve 5 are installed on the valve seat 6.

[0038] The servo valve 1 has three interfaces, a first interface is installed with a muffler, a second interface is connected to a first pipeline port of the valve seat 6 , and a third interface is connected to a second pipeline interface of the valve seat 6 .

[0039] like Figure 1 and 2 As shown, there are two throttle valves 5 , which are respectively installed on the first pipeline opening of the valve seat 6 and the second pipeline interface of the valve seat 6 .

[0040] Preferably, the opening range of the servo valve 1 is 0-100%, which can be precisely adjusted according to actual needs. The switch valve 3 can adopt a solenoid valve, and its switching time is preferably 0.1-0.5 seconds to ensure rapid response. The flow adjustment range of the throttle valve 5 is preferably 0-100L / min, which can be adjusted according to the hollow tube embryo 8 of different specifications. The pressure adjustment range of the pressure reducing valve 4 is preferably 0-1MPa to meet different production needs. The measurement accuracy of the pressure sensor 2 is preferably ±0.1%, and the range is 0-2MPa to ensure the accuracy of pressure monitoring.

[0041] The beneficial effects of this embodiment are: by integrating the valve seat, servo valve, switch valve and throttle valve together, a high degree of integration and compact design are achieved, thereby reducing the possibility of leakage and failure. Its precise gas control capability improves operating accuracy while optimizing gas flow efficiency. Compared with traditional systems, this design simplifies the maintenance process, saves space, and improves system safety, and is particularly suitable for application environments where space is limited and high-precision control is required.

[0042] Embodiment 2

[0043] This embodiment provides an air supply device for a BFS machine, which is used to solve the problem that the air intake of tube blanks is unstable during production by a conventional BFS machine, resulting in uneven wall thickness of the produced plastic products. The specific implementation of this embodiment is described in detail below in conjunction with the accompanying drawings.

[0044] like Figure 7 As shown, a gas supply device for a blow-fill-seal integrated machine includes the gas supply system as in the first embodiment; and further includes: a detection system for detecting the change in the outer diameter of the hollow tube blank; a control system connected to the gas supply system and the detection system, and used to control the gas supply amount of the gas supply system according to the detection result of the detection system;

[0045] In this embodiment, if Figure 7 As shown, the detection system includes a detection sensor 10, which is installed on an equipment frame (not shown in the figure) and is used to detect the change in the distance between the outer diameter of the hollow tube embryo 8 and the detection sensor 10 in real time. Preferably, the detection sensor 10 adopts a laser distance sensor with a measurement range of 10-100mm, an accuracy of ±0.01mm, and a sampling frequency of not less than 1000Hz to ensure the real-time and accuracy of the detection.

[0046] In one embodiment, the control system includes a computer processor (not shown in the figure). Preferably, the computer processor has a computing speed of not less than 2 GHz and a memory of not less than 8 GB to ensure rapid response and stable operation of the system.

[0047] In this embodiment, the computer processor can be an ARM Cortex-M4 series microcontroller (such as the STM32F4 series): this embedded microcontroller has high performance and low power consumption, supports floating-point operations, and is suitable for processing real-time data acquisition and control algorithms in this application. It can quickly respond to sensor inputs and accurately control the operation of the servo valve and the switch valve. The working principle of this processor is to control the entire system by executing a pre-written program. It can receive signals from pressure sensors and detection sensors in real time, perform data processing and analysis, and then output control signals to the servo valve and the switch valve according to a preset algorithm, thereby accurately adjusting the amount of gas entering the hollow tube embryo. The computer processor is a prior art, and this embodiment will not be described in detail.

[0048] In another embodiment, it further includes a die head 7 and a mold 9. The die head 7 is connected to the gas supply system and is used to continuously extrude the hollow tube embryo 8. The mold 9 is used to clamp the bottom of the hollow tube embryo 8 to close the hollow tube embryo 8, thereby forming a closed space for easy gas injection and pressure control. Preferably, the extrusion temperature range of the die head 7 is 180-250°C, and the extrusion speed range is 0.5-5m / min, which can be adjusted according to different plastic materials and product specifications. The clamping force of the mold 9 is preferably 1000-5000N to ensure the effective closure of the hollow tube embryo 8.

[0049] The control system further includes a gas flow regulating unit and a gas pressure regulating unit. The gas flow regulating unit is connected to the control system and is used to regulate the gas flow entering the hollow tube embryo 8 according to the instructions of the control system. The gas pressure regulating unit is connected to the control system and is used to regulate the gas pressure entering the hollow tube embryo 8 according to the instructions of the control system. Preferably, the regulating accuracy of the gas flow regulating unit is ±0.1L / min, and the regulating accuracy of the gas pressure regulating unit is ±0.01MPa, so as to achieve precise control of the gas state in the hollow tube embryo 8.

[0050] In order to facilitate the operator to monitor the production process, this embodiment also includes a display unit and an alarm unit. The display unit is connected to the control system and is used to display the outer diameter data and gas supply parameters of the tubular forming body in real time. The alarm unit is connected to the control system and is used to issue an alarm when the outer diameter of the hollow tube embryo 8 exceeds a preset range. Preferably, the display unit uses a touch screen of 10 inches or more with a resolution of not less than 1920x1080 to ensure the clarity of the display and the convenience of operation. The alarm unit may include an audible and visual alarm device with a sound alarm decibel of between 70-90dB to ensure that the operator can detect abnormal conditions in time.

[0051] The specific usage method of this embodiment is as follows:

[0052] Start-up phase: When the BFS machine starts production, there is no gas in the hollow tube 8, and the distance between the outer diameter of the hollow tube 8 and the detection sensor 10 is greater than a preset value. The detection sensor 10 feeds this information back to the computer processor of the control system.

[0053] Rapid gas replenishment: The control system instructs the switch valve 3 to open and controls the servo valve 1 to open to the maximum. The gas quickly enters the hollow tube embryo 8 from the air inlet 11 through the servo valve 1 and the switch valve 3, achieving rapid gas replenishment and shortening the production preparation time. Preferably, the gas flow rate in the rapid gas replenishment stage can be set to 50-100L / min, and the duration is 1-5 seconds. The specific parameters can be adjusted according to the size of the hollow tube embryo 8.

[0054] Stable control: When the outer diameter of the hollow tube embryo 8 increases to the distance range set by the detection sensor 10, the detection sensor 10 again feeds back a signal to the control system. The control system then instructs the switch valve 3 to close and reduces the opening of the servo valve 1. At this time, the gas enters the hollow tube embryo 8 from the air inlet 11 through the servo valve 1 and the throttle valve 5 to achieve stable real-time gas replenishment. Preferably, the gas flow rate in the stable control stage can be set to 5-20L / min, and the air pressure can be set to 0.2-0.5MPa. The specific parameters can be fine-tuned according to product requirements.

[0055] Continuous monitoring: During the production process, the detection system continuously monitors the changes in the outer diameter of the hollow tube embryo 8. The control system adjusts the gas supply in real time based on these data to ensure that the outer diameter of the hollow tube embryo 8 always remains within the set range. Preferably, the allowable fluctuation range of the outer diameter of the hollow tube embryo 8 is ±0.1mm, and the alarm unit will sound an alarm when this range is exceeded.

[0056] Data recording and analysis: The control system can record various parameters in the production process in real time, including but not limited to the outer diameter of the hollow tube 8, gas flow, air pressure, etc. These data can be used for subsequent production optimization and quality control. Preferably, the frequency of data recording can be set to 1-10Hz, and the storage period is 1-30 days. The specific parameters can be adjusted according to actual needs.

[0057] For those skilled in the art, the above description, combined with the common knowledge of circuit design, mechanical processing and software programming in the prior art, can realize the specific implementation of the present utility model. For example, the software programming of the control system, the specific installation method of each component, etc. are the usual means of those skilled in the art and will not be repeated here.

[0058] The beneficial effects of this embodiment are as follows:

[0059] By real-time monitoring and precise control of the air intake of the hollow tube embryo 8, the uniformity of the wall thickness of the product is ensured and the product quality is improved.

[0060] The combination of rapid air replenishment and stable control shortens production preparation time and improves production efficiency.

[0061] The use of multiple adjustment mechanisms (including servo valve 1, switch valve 3, throttle valve 5, etc.) enhances the adaptability of the system and can meet the production needs of products of different specifications.

[0062] The non-contact detection method avoids physical damage to the hollow tube embryo 8, while ensuring the accuracy and real-time performance of the detection.

[0063] The real-time display and alarm functions make it easy for operators to monitor the production process, discover and handle abnormal situations in a timely manner, and improve production safety.

[0064] The high degree of automation reduces manual operation errors, reduces labor intensity and production costs.

[0065] The data logging function provides a basis for production process optimization and quality control, which helps to improve production efficiency and product quality in the long term.

[0066] In summary, the gas supply device and gas supply system of the BFS machine provided by the utility model realizes high integration and compact design by integrating the valve seat, servo valve, switch valve and throttle valve, thereby reducing the possibility of leakage and failure. Its precise gas control capability improves the operation accuracy and optimizes the gas flow efficiency. Compared with the traditional system, this design simplifies the maintenance process, saves space, and improves the system safety, and is particularly suitable for application environments with limited space and high-precision control.

[0067] The gas supply equipment can ensure the uniformity of product wall thickness and significantly improve product quality by accurately controlling the amount of gas entering the hollow tube embryo. At the same time, it has a high degree of automation and fast response speed, which greatly improves production efficiency and reduces manual operation errors, thereby reducing the cost of equipment use and has significant economic benefits.

[0068] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A gas supply system, characterized in that: include: A valve seat having an air inlet and a working port; A servo valve connected to the valve seat via a ventilation pipe; A switch valve, mounted on the valve seat, for adjusting the amount of gas entering the hollow tube embryo; A throttle valve is installed on the valve seat and connected to the vent pipe.

2. The gas supply system according to claim 1, characterized in that: Also includes: A pressure reducing valve is installed on the valve seat; and a pressure sensor is installed on the valve seat.

3. The gas supply system according to claim 1, characterized in that: The servo valve is provided with a muffler.

4. An air supply device for a blow-fill-seal integrated machine, characterized in that: The method comprises a gas supply system as claimed in any one of claims 1 to 3, for supplying gas to the hollow tube embryo; and further comprising: Detection system, used to detect the change of the outer diameter of the hollow tube embryo; A control system is connected to the gas supply system and the detection system, and is used to control the gas supply amount of the gas supply system according to the detection result of the detection system.

5. The device according to claim 4, characterized in that The detection system comprises: a detection sensor for detecting the distance between the outer diameter of the hollow tube embryo and the detection sensor.

6. The device according to claim 4, characterized in that Also includes: A die head, connected to the gas supply system, for extruding a hollow tube embryo; The mold is used to clamp the bottom of the hollow tube embryo to seal the hollow tube embryo.

7. The device according to claim 4, characterized in that The control system includes a computer processor for receiving signals from the detection system and controlling the gas supply system.

8. The device according to claim 4, characterized in that The control system further comprises: The gas flow regulating unit is used to regulate the gas flow entering the hollow tube embryo according to the instruction of the control system.

9. The device according to claim 8, characterized in that The control system further comprises: a gas pressure regulating unit, which is used to regulate the gas pressure entering the hollow tube embryo according to the instruction of the control system.

10. The device according to claim 4, characterized in that Also includes: A display unit connected to the control system and used to display the outer diameter data of the tubular formed body and gas supply parameters in real time; The alarm unit is connected to the control system and is used to issue an alarm when the outer diameter of the hollow tube embryo exceeds a preset range.

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