Continuous operation bottle blowing machine for serum bottle production and working method thereof

Abstract

The invention belongs to the technical field of blow molding, and discloses a continuously-operating serum bottle production bottle blowing machine and a working method thereof.The continuously-operating serum bottle production bottle blowing machine comprises a rack, three lateral guide rails are fixedly installed at the top end of the rack at equal intervals, the top ends of the three lateral guide rails are movably connected with mold assemblies in a clamped mode, and the mold assemblies are movably connected with the bottom end of the rack in a clamped mode; and a plastic pretreatment assembly is arranged above the mold assembly on the left side. Heat generated during plastic melting is utilized, high-pressure air is converted into power after the heat is absorbed by the air to achieve vertical reciprocating displacement of the bottom plate, mold closing and demolding of the mold assembly are synchronously achieved, automatic conveying of the guide wheels is matched, and automatic cutting and automatic conveying of hollow parisons to a blow molding position can be achieved; the whole process is automatically completed, the parison pieces do not need to be manually controlled to be transferred in all the working procedures, the operation process is simplified, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of blow molding, and in particular relates to a continuously operated bottle blowing machine for producing serum bottles and a working method thereof. Background Art

[0002] Serum bottles are widely used in the biomedical field. They are mainly used to store serum, culture medium, buffer, various reagents, etc. Serum bottles are made of various materials, the most common of which are PET, PETG and borosilicate glass. PET and PETG have good chemical stability and transparency, while borosilicate glass has excellent high temperature resistance and chemical corrosion resistance. Serum bottles made of plastic are generally produced by injection molding or blow molding, and those made by blow molding are generally produced by bottle blowing machines.

[0003] The blow molding machine feeds pre-heated plastic granules or prefabricated plastic blanks into a mold and uses high-pressure airflow to blow the plastic into the shape of a bottle. In the production of serum bottles, the blow molding machine plays a vital role. It can efficiently produce serum bottles that meet the requirements. When blow molding conventional serum bottles, the molten plastic needs to be injected into the mold and then blow molded by high-pressure airflow. The entire blow molding process needs to be transferred between different devices, that is, the plastic is first melted and then blow molded. The whole process is relatively cumbersome.

[0004] At the same time, during the blow molding process, an air pump is generally used to output high-pressure airflow to the inside of the mold. Since blow molding requires a certain temperature, the airflow needs to be heated. In order to maintain the temperature, the existing technology will continue to heat the airflow. This method will undoubtedly lead to an increase in energy consumption and significantly increase production costs. Summary of the invention

[0005] The object of the present invention is to provide a continuously operated blow molding machine for producing serum bottles and a working method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical scheme: a continuously operated blow molding machine for producing serum bottles, comprising a frame, the top of the frame is fixedly installed with lateral guide rails at equal distances, the number of the lateral guide rails is three in total, the tops of the three lateral guide rails are all movably connected with mold assemblies, a plastic pretreatment assembly is arranged above the mold assembly on the left side, a hot air delivery head is arranged above the mold assembly in the middle, and a cold air delivery head is arranged above the mold assembly on the right side, the bottom end of the plastic pretreatment assembly is fixedly connected to a power assembly, the bottom end of the power assembly is installed with an air delivery assembly, and the air delivery assembly is arranged on the bottom end of the power assembly. The right end of the air component is fixedly connected with an air supply pipe, and one end of the air supply pipe away from the air supply component is fixedly connected with a three-way valve located behind the hot air delivery head, and the right end of the three-way valve is fixedly connected with a cooling chamber, and the front end of the right side of the cooling chamber is connected to the rear end of the cold air delivery head. A bottom plate is provided below the lateral guide rail, and an extension rod is fixedly installed at an equidistant distance on the top of the bottom plate. A support plate located below the mold assembly is provided above the bottom plate, and the bottom end of the support plate is connected to the top of the extension rod, and guide wheels are movably installed at an equidistant distance on the top of the support plate, and a micro motor is built into the support plate to control the rotation of the guide wheel.

[0007] Before use, the device can be fixed on the flat ground through the frame. At the same time, the bottom end of the plastic pretreatment component is also installed with an extended base for fixing the device, and the bottom end of the gas transmission component is fixed to the ground at the same time. The plastic particles of the corresponding materials are prepared, and the power of the device is turned on to complete the preparation before blow molding.

[0008] As a further technical solution of the present invention, the plastic pretreatment component includes an extrusion chamber, which is fixedly connected to a feed tank at an upper position near the rear end of the extrusion chamber, a screw is movably installed inside the extrusion chamber, a mounting seat is fixedly installed at the rear end of the extrusion chamber, a motor is fixedly installed at one end of the mounting seat, the output end of the motor is connected to the rear end of the screw, the front end of the extrusion chamber is fixedly connected to an electric heating die head located at the front end of the screw, the interior of the electric heating die head is connected to the interior of the extrusion chamber, and the bottom end of the electric heating die head is located directly above the top of the left mold assembly.

[0009] As a further technical solution of the present invention, an electric heating box is fixedly sleeved on the outer side surface of the extrusion cavity, a cavity is opened inside the electric heating box and an electric heating pipe is installed, a fan is fixedly installed on the top of the electric heating box, the output end of the fan is connected to the interior of the electric heating box, and the bottom end of the electric heating box is fixedly connected to a first hot air pipe, which is connected to a power component.

[0010] Before injection molding, plastic particles can be put in from the feed tank, and then the plastic particles enter the extrusion cavity. At this time, the electric heating box can be turned on to heat the extrusion cavity, and the plastic particles inside the extrusion cavity are melted. The motor is turned on, and the motor can drive the screw to rotate and extrude the plastic particles inside the extrusion cavity. The molten plastic is transported to the electric heating die head, and is extruded into a hollow parison through the molding action of the electric heating die head and discharged through the bottom end of the electric heating die head. At the same time, the fan can be turned on synchronously to transport external air to the inside of the electric heating box. After the air absorbs the heat inside the electric heating box, it can be discharged through the first hot air pipe until it is transported to the power component.

[0011] As a further technical solution of the present invention, the power assembly includes a power tank, the top of the power tank is connected to the bottom end of the first hot air pipe, the bottom end of the power tank is fixedly connected to the second hot air pipe, the other end of the second hot air pipe is connected to the gas transmission assembly, the middle part of the power tank is movably connected to a main shaft, and the outer side surface of the main shaft is fixedly sleeved with an impeller located inside the power tank.

[0012] As a further technical solution of the present invention, the front and rear sides of the main shaft penetrate the front and rear sides of the power tank and are fixedly sleeved with a first linkage rod, and the first linkage rod is movably connected to the second linkage rod through a rotating shaft at one end away from the main shaft. The power assembly also includes a movable seat located at the bottom end of the second linkage rod, and the front and rear sides of the top end of the movable seat are movably connected to the two second linkage rods. The middle part of the bottom end of the movable seat is connected to the air delivery assembly and can only be moved up and down under the limit of the air delivery assembly. The front side of the movable seat is fixedly connected to a linkage frame, and the other end of the linkage frame is connected to the rear end of the left side of the base plate.

[0013] High-temperature and high-pressure air can enter the interior of the power tank through the first hot air pipe, and then exert force on the impeller to drive the impeller to rotate, and the main shaft will rotate accordingly. At the same time, the high-temperature and high-pressure air can be discharged through the second hot air pipe and enter the interior of the gas transmission component; When the main shaft rotates, the first linkage rod swings and drives the second linkage rod to swing synchronously, and applies an upward pulling force or a downward thrust to the movable seat. At this time, the movable seat can move back and forth up and down under the guidance of the gas transmission component, and drive the linkage frame to move back and forth up and down synchronously.

[0014] As a further technical solution of the present invention, the mold assembly includes a front mold and a rear mold that are symmetrically arranged in the front and rear directions. When the front mold and the rear mold are combined, they form a complete model cavity. The bottom ends of the front mold and the rear mold are fixedly connected to guide rods. The bottom ends of the guide rods are movably connected to the lateral guide rails, and the guide rods move forward and backward relative to the lateral guide rails.

[0015] As a further technical solution of the present invention, the bottom end of the guide rod is fixedly connected to a first fixed seat, the end of the first fixed seat away from the guide rod is movably connected to a connecting rod via a rotating shaft, the end of the connecting rod away from the first fixed seat is movably connected to a second fixed seat via a rotating shaft, the bottom end of the second fixed seat is connected to the top of the base plate, and two of the second fixed seats are installed on the front and rear sides of the top of the base plate.

[0016] When the linkage frame moves downward, it can simultaneously drive the bottom plate to move downward, and drive the support plate to move downward synchronously. At this time, the two connecting rods will deflect accordingly, that is, the angle between the two connecting rods and the bottom plate will decrease accordingly. At this time, the two guide rods can be relatively close to each other under the guidance of the lateral guide rails, that is, the front mold moves closer to the rear mold, and the mold is closed. At this time, the extruded hollow parison can be cut off; When the bottom plate moves downward, the angle between the two connecting rods and the bottom plate increases, that is, the two guide rods move away from each other, and the front mold moves away from the rear mold. At this time, demoulding can be performed, and the hollow parison between the front mold and the rear mold falls down. When the bottom plate moves upward, the support plate moves upward synchronously, and the support plate can receive the fallen hollow parison. After the acceptance is completed, the guide wheel can be turned on to drive the hollow parison to move to the right until it enters the middle mold assembly. At this time, the bottom plate is continued to be controlled to move downward. At this time, the mold closing operation can be continued, and the hollow parison is molded between the front mold and the rear mold in the middle, waiting for the blow molding process.

[0017] By utilizing the heat generated when the plastic melts and converting the high-pressure air into power after the air absorbs the heat, the bottom plate can be moved back and forth up and down, and the mold assembly can be closed and demolded simultaneously. With the automatic transmission of the guide wheel, the hollow parison can be automatically cut off and automatically transmitted to the blow molding place, and the mold can be closed automatically. The whole process is completed automatically without manual control of the transfer of the parison parts in each process, which simplifies the operation process and improves processing efficiency.

[0018] As a further technical solution of the present invention, the gas delivery assembly includes an air storage pipe, the internal movable sleeve of the air storage pipe is connected with a piston rod, the top end of the piston rod is fixedly connected with a piston plate, the top end of the piston plate passes through the top end of the air storage pipe and is connected to the bottom end of the movable seat.

[0019] As a further technical solution of the present invention, an intake valve is fixedly connected to the rear side of the gas storage pipe near the bottom end, and an exhaust valve is symmetrically installed on the front side of the gas storage pipe near the bottom end. The intake valve is fixedly connected to the other end of the second hot air pipe, and the other end of the exhaust valve is connected to the gas supply pipe. Check valves are installed inside the intake valve and the exhaust valve, and the directions of the valves are respectively inward conduction and outward blockage and outward conduction and inward blockage.

[0020] When the bottom plate moves up, that is, when demolding is performed, the movable seat moves upward at this time, which can drive the piston plate to move upward. At this time, the piston rod moves upward synchronously and generates negative pressure inside the air storage pipe. At this time, hot air is sucked into the air storage pipe through the air intake valve. When the mold is closed, the movable seat moves down and the piston rod moves down synchronously, so that the high-temperature and high-pressure air can be discharged through the exhaust valve, and enter the inside of the three-way valve through the air pipe, and discharged through the hot air delivery head. Since the hollow parison is being closed at this time, the high-temperature air can be blown into the inside of the hollow parison, and the blow molding process of the serum bottle can be completed with the mold cavity after closing the mold. After the blow molding is completed, the bottom plate continues to move downward, and the formed serum bottle is demolded and moves downward.

[0021] By reusing the heat generated when the plastic is melted and heated, and using the up and down displacement of the bottom plate during mold closing and demolding, the hot air can be absorbed and discharged, so that the device can just discharge the hot air when the hollow parison is closed and act on the inside of the parison. The whole process is completed automatically, and there is no need to set a heat source during blow molding. The entire blow molding process can be completed using only the heat source during melting, which effectively reduces energy consumption and production costs.

[0022] When the formed serum bottle is lowered, the guide wheel can be opened to transport the formed serum bottle to the inside of the mold assembly on the right. When multiple mold assemblies are closed, the hot air can be discharged through the cold air delivery head after being cooled by the cooling cavity and enter the inside of the rightmost mold assembly to cool the formed serum bottle and accelerate its molding process. After cooling is completed, the demoulding process is repeated to remove the cooled serum bottle and complete the entire blow molding process through the transmission of the guide wheel. At the same time, during the cooling and molding, the mold assembly on the left can still be used to close the hollow parison, while the mold assembly in the middle can be used to blow mold the serum bottle. By repeating the above process, the automated continuous production process can be completed.

[0023] The automatic cooling process can be completed by cooling the hot air and then re-acting it on the serum bottle after mold closing. At the same time, with the entire mold closing and demoulding process and the automatic transmission of the guide wheel, the mold closing molding of the hollow parison, the blow molding of the serum bottle and the cooling molding of the serum bottle can be carried out simultaneously. The whole process is completed automatically and continuously without manual intervention. The degree of automation is high, which can realize the continuous automatic production of serum bottles and further improve the production efficiency.

[0024] A working method of a continuously operated blow molding machine for producing serum bottles, comprising the following steps: S1: Before blow molding, plastic particles can be injected into the feed tank, and the motor and electric heating box are turned on. At this time, the plastic particles can enter the extrusion cavity, and the electric heating box can quickly heat the extrusion cavity, and melt the plastic particles through the extrusion of the screw and high temperature and transfer them to the electric heating die head, and then lead out through the bottom of the electric heating die head to form a hollow parison; S2: At the same time, the fan can be turned on to input air into the first hot air pipe, and the hot air is led out to the inside of the power tank through the first hot air pipe. At this time, the impeller rotates and drives the main shaft to rotate, and drives the first linkage rod to swing. At this time, the second linkage rod swings synchronously, and applies an upward pulling force and a downward thrust to the movable seat. At this time, the movable seat can be driven to move up and down reciprocatingly, and the linkage frame can be driven to move up and down reciprocatingly synchronously; S3: When the linkage frame moves downward, the bottom plate moves downward accordingly, and drives the support plate downward. At this time, the two connecting rods deflect accordingly, and drive the two guide rods to be relatively close to each other. At this time, the front mold and the rear mold are relatively close to each other, and the mold is closed. At this time, the three mold assemblies can respectively close the mold, blow mold and cool the hollow parison. When the bottom plate moves upward, the support plate moves upward accordingly, and the front mold and the rear mold are relatively far away from each other, and demolding is completed. At this time, the corresponding hollow parison falls onto the support plate, and the hollow parison can be transferred to the inside of the middle mold assembly by turning on the guide wheel; S4: At this time, the above process can be repeated to fix the hollow parison inside the middle mold assembly, and when the bottom plate moves up, that is, demoulding is performed, the piston rod can be driven to move up, and high-pressure hot air can be sucked into the inside of the air storage pipe through the air storage pipe. When the mold is closed, that is, the bottom plate moves down, the piston rod moves down accordingly, and the high-pressure hot air inside the air storage pipe is discharged, and then it can be discharged to the inside of the three-way valve through the air delivery pipe and discharged through the hot air delivery head. At this time, the middle mold assembly is just in the process of closing the mold, and the discharged hot air is just blow-molded inside the hollow parison; S5: After the blow molding is completed, the above process is repeated. At this time, the blow-molded serum bottle can enter the rightmost mold assembly and complete the mold closing. At this time, the hot air can be cooled by the cooling chamber and then discharged through the cold air delivery head, and act on the inside of the molded serum bottle to complete the cooling. After the cooling is completed, the demolding process is repeated, and the serum bottle moves down to the bottom of the rightmost mold assembly and the export process can be completed through the transmission of the guide wheel. By repeating the above process, the continuous production process can be completed.

[0025] The beneficial effects of the present invention are as follows: 1. The present invention utilizes the heat of plastic melting, and converts high-pressure air into power after air absorbs heat to realize the up and down reciprocating movement of the bottom plate, and simultaneously realizes the mold closing and demolding of the mold assembly. With the automatic transmission of the guide wheel, the hollow parison can be automatically cut off and automatically transmitted to the blow molding place, and the mold closing is automatically completed. The whole process is completed automatically, and there is no need for manual control of the transfer of the parison in each process, which simplifies the operation process and improves the processing efficiency.

[0026] 2. The present invention reuses the heat generated when the plastic is melted and heated, and utilizes the up and down displacement of the bottom plate during mold closing and demolding to achieve the absorption and discharge of hot air, so that the device can just discharge the hot air when the hollow parison is molded and act on the inside of the parison. The whole process is completed automatically, and there is no need to set a heat source during blow molding. Only the heat source during melting can be used to complete the entire blow molding process, which effectively reduces energy consumption and production costs.

[0027] 3. The present invention can complete the automatic cooling process by cooling the hot air and then re-acting it on the serum bottle after mold closing. At the same time, in conjunction with the entire mold closing and demolding process and the automatic transmission of the guide wheel, the mold closing molding of the hollow parison, the blow molding of the serum bottle and the cooling molding of the serum bottle can be carried out simultaneously. The whole process is completed automatically and continuously without manual intervention. The degree of automation is high, and the continuous automatic production of serum bottles can be realized, further improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a separate schematic diagram of the structure of the plastic pretreatment component of the present invention; Figure 3 It is a partial structural schematic diagram of the plastic pretreatment component structure of the present invention; Figure 4 It is a cross-sectional schematic diagram of the internal structure of the plastic pretreatment component of the present invention; Figure 5 It is an exploded schematic diagram of the structure of the lateral guide rail and the clamping assembly of the present invention; Figure 6It is a schematic diagram of the coordination of the bottom plate and the support plate structure of the present invention; Figure 7 It is a cross-sectional schematic diagram of the internal structure of the clamping assembly of the present invention; Figure 8 It is a schematic diagram of the coordination of the gas delivery pipe, the power assembly and the gas delivery assembly structure of the present invention; Fig. 9 It is a separate cross-sectional schematic diagram of the power assembly structure of the present invention; Fig.10 It is a separate cross-sectional schematic diagram of the gas delivery assembly structure of the present invention.

[0029] In the figure: 1, frame; 2, lateral guide rail; 3, plastic pretreatment component; 301, extrusion chamber; 302, screw; 303, mounting seat; 304, motor; 305, feed tank; 306, electric heating die head; 307, electric heating box; 308, fan; 309, first hot air pipe; 4, bottom plate; 5, extension rod; 6, support plate; 7, guide wheel; 8, mold assembly; 801, front mold; 802, rear mold; 803, guide rod; 804, first fixed seat; 805, second fixed seat; 806, connecting rod; 9, air delivery pipe; 10, three-way valve; 11, hot air delivery head; 12, cooling chamber; 13, cold air delivery head; 14, power assembly; 141, power tank; 142, second hot air pipe; 143, main shaft; 144, impeller; 145, first linkage rod; 146, second linkage rod; 147, movable seat; 148, linkage frame; 15, air delivery assembly; 151, air storage pipe; 152, piston rod; 153, piston plate; 154, intake valve; 155, exhaust valve. DETAILED DESCRIPTION

[0030] 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.

[0031] like Figures 1 to 10As shown, in the embodiment of the present invention, a continuously operated blow molding machine for producing serum bottles includes a frame 1, and lateral guide rails 2 are fixedly installed at the top of the frame 1 at equal distances. The number of lateral guide rails 2 is three in total, and the tops of the three lateral guide rails 2 are all movably connected with mold assemblies 8. A plastic pretreatment assembly 3 is provided above the left mold assembly 8, a hot air delivery head 11 is provided above the middle mold assembly 8, and a cold air delivery head 13 is provided above the right mold assembly 8. The bottom end of the plastic pretreatment assembly 3 is fixedly connected to a power assembly 14, and an air delivery assembly 15 is installed at the bottom end of the power assembly 14. The right end of the air delivery assembly 15 is fixed An air delivery pipe 9 is connected, and one end of the air delivery pipe 9 away from the air delivery component 15 is fixedly connected to a three-way valve 10 located behind the hot air delivery head 11, and the right end of the three-way valve 10 is fixedly connected to a cooling chamber 12, and the front end of the right side of the cooling chamber 12 is connected to the rear end of the cold air delivery head 13. A bottom plate 4 is provided below the lateral guide rail 2, and an extension rod 5 is fixedly installed at an equal distance on the top of the bottom plate 4. A support plate 6 located below the mold assembly 8 is provided above the bottom plate 4, and the bottom end of the support plate 6 is connected to the top of the extension rod 5, and a guide wheel 7 is movably installed at an equal distance on the top of the support plate 6, and a micro motor is built into the support plate 6 to control the rotation of the guide wheel 7.

[0032] Before use, the device can be fixed on a flat ground through the frame 1. At the same time, the bottom end of the plastic pretreatment component 3 is also installed with an extended base for fixing the device, and the bottom end of the gas delivery component 15 is fixed to the ground at the same time. The plastic particles of the corresponding material are prepared, and the power of the device is turned on to complete the preparation before blow molding.

[0033] like Figure 1 and Figure 2 as well as Figure 3 and Figure 4 As shown, the plastic pretreatment component 3 includes an extrusion chamber 301, and a feed tank 305 is fixedly connected to the upper position of the extrusion chamber 301 near the rear end. A screw 302 is movably installed inside the extrusion chamber 301, and a mounting seat 303 is fixedly installed at the rear end of the extrusion chamber 301. A motor 304 is fixedly installed at one end of the mounting seat 303. The output end of the motor 304 is connected to the rear end of the screw 302. The front end of the extrusion chamber 301 is fixedly connected to an electric heating die head 306 located at the front end of the screw 302. The inside of the electric heating die head 306 The part is connected with the interior of the extrusion cavity 301, the bottom end of the electric heating die head 306 is located just above the top of the left mold assembly 8, the outer side surface of the extrusion cavity 301 is fixedly sleeved with an electric heating box 307, the interior of the electric heating box 307 is provided with a cavity and an electric heating pipe is installed, a fan 308 is fixedly installed on the top of the electric heating box 307, the output end of the fan 308 is connected with the interior of the electric heating box 307, the bottom end of the electric heating box 307 is fixedly connected with a first hot air pipe 309, and the first hot air pipe 309 is connected to the power assembly 14.

[0034] Before injection molding, plastic particles can be put in from the feed tank 305, and the plastic particles then enter the extrusion chamber 301. The electric heating box 307 can be turned on to heat the extrusion chamber 301, and the plastic particles inside the extrusion chamber 301 are melted. The motor 304 is turned on, and the motor 304 can drive the screw 302 to rotate, and extrude the plastic particles inside the extrusion chamber 301, and transport the molten plastic to the electric heating die 306, and through the molding action of the electric heating die 306, it is extruded into a hollow parison and discharged through the bottom end of the electric heating die 306; At the same time, the fan 308 can be turned on synchronously to transport external air to the interior of the electric heating box 307. After the air absorbs the heat inside the electric heating box 307, it can be discharged through the first hot air pipe 309 until it is transported to the power component 14.

[0035] like Figure 1 and Figure 8 and Fig. 9 As shown, the power assembly 14 includes a power tank 141, the top of the power tank 141 is connected to the bottom of the first hot air pipe 309, the bottom of the power tank 141 is fixedly connected to the second hot air pipe 142, the other end of the second hot air pipe 142 is connected to the gas delivery assembly 15, the middle of the power tank 141 is movably connected to a main shaft 143, the outer side of the main shaft 143 is fixedly sleeved with an impeller 144 located inside the power tank 141, the front and rear sides of the main shaft 143 penetrate the front and rear sides of the power tank 141 and are fixedly sleeved with a first linkage rod 145, and the first linkage rod 145 is fixedly sleeved with the first linkage rod 145. One end of a linkage rod 145 away from the main shaft 143 is movably connected to a second linkage rod 146 through a rotating shaft. The power assembly 14 also includes a movable seat 147 located at the bottom end of the second linkage rod 146. The front and rear sides of the top of the movable seat 147 are movably connected to the two second linkage rods 146. The middle part of the bottom end of the movable seat 147 is connected to the gas delivery assembly 15, and can only be moved up and down under the limit of the gas delivery assembly 15. The front side of the movable seat 147 is fixedly connected to a linkage frame 148, and the other end of the linkage frame 148 is connected to the rear end of the left side of the base plate 4.

[0036] The high-temperature and high-pressure air can enter the interior of the power tank 141 through the first hot air pipe 309, and then a force can be applied to the impeller 144 to drive the impeller 144 to rotate, and then the main shaft 143 rotates accordingly, and at the same time, the high-temperature and high-pressure air can be discharged through the second hot air pipe 142 and enter the interior of the gas delivery component 15; When the main shaft 143 rotates, the first linkage rod 145 swings accordingly and drives the second linkage rod 146 to swing synchronously, and applies an upward pulling force or a downward pushing force to the movable seat 147. At this time, the movable seat 147 can move back and forth up and down under the guidance of the gas delivery component 15, and drive the linkage frame 148 to move back and forth up and down synchronously.

[0037] like Figure 1 and Figure 4 as well as Figure 7 As shown, the mold assembly 8 includes a front mold 801 and a rear mold 802 that are symmetrically arranged in the front and rear. The front mold 801 and the rear mold 802 form a complete model cavity when combined. The bottom ends of the front mold 801 and the rear mold 802 are fixedly connected with a guide rod 803. The bottom ends of the guide rod 803 are movably engaged with the lateral guide rail 2. The guide rod 803 moves forward and backward relative to the lateral guide rail 2. The bottom ends of the guide rods 803 are fixedly connected with a first fixed seat 804. The end of the first fixed seat 804 away from the guide rod 803 is movably connected with a connecting rod 806 through a rotating shaft. The end of the connecting rod 806 away from the first fixed seat 804 is movably connected with a second fixed seat 805 through a rotating shaft. The bottom end of the second fixed seat 805 is connected to the top of the base plate 4. The two second fixed seats 805 are installed on the front and rear sides of the top of the base plate 4.

[0038] Embodiment: When the linkage frame 148 moves downward, the bottom plate 4 can be driven downward synchronously, and the support plate 6 can be driven downward synchronously. At this time, the two connecting rods 806 are deflected accordingly, that is, the angle between the two connecting rods 806 and the bottom plate 4 is reduced accordingly. At this time, the two guide rods 803 can be relatively close to each other under the guidance of the lateral guide rail 2, that is, the front mold 801 is close to the rear mold 802, and the mold is closed. At this time, the extruded hollow parison can be cut; When the bottom plate 4 moves downward, the angle between the two connecting rods 806 and the bottom plate 4 increases, that is, the two guide rods 803 move away from each other, and the front mold 801 moves away from the rear mold 802. At this time, demoulding can be performed, and the hollow parison between the front mold 801 and the rear mold 802 falls. When the bottom plate 4 moves upward, the support plate 6 moves upward synchronously, and the support plate 6 can receive the fallen hollow parison. After the acceptance is completed, the guide wheel 7 can be opened to drive the hollow parison to move to the right until it enters the middle mold assembly 8. At this time, the bottom plate 4 is continued to be controlled to move downward. At this time, the mold closing operation can be continued, and the hollow parison can be closed between the front mold 801 and the rear mold 802 in the middle, waiting for the blow molding process.

[0039] By utilizing the heat generated when the plastic melts and converting the high-pressure air into power after the air absorbs the heat, the bottom plate 4 can be moved back and forth up and down, and the mold assembly 8 can be closed and demolded simultaneously. In conjunction with the automatic transmission of the guide wheel 7, the hollow preform can be automatically cut off and automatically transmitted to the blow molding place, and the mold closing can be automatically completed. The whole process is completed automatically without manual control of the transfer of the preform in each process, which simplifies the operation process and improves the processing efficiency.

[0040] like Figure 1and Figure 8 as well as Fig.10 As shown, the gas delivery assembly 15 includes an air storage pipe 151, and the air storage pipe 151 has a piston rod 152 movably sleeved inside, and the top of the piston rod 152 is fixedly connected to a piston plate 153, and the top of the piston plate 153 passes through the top of the air storage pipe 151 and is connected to the bottom of the movable seat 147. An air intake valve 154 is fixedly connected to the rear side of the air storage pipe 151 near the bottom, and an exhaust valve 155 is symmetrically installed at the front side of the air storage pipe 151 near the bottom. The air intake valve 154 is fixedly connected to the other end of the second hot air pipe 142, and the other end of the exhaust valve 155 is connected to the air delivery pipe 9. Check valves are installed inside the air intake valve 154 and the exhaust valve 155, and the directions of the valves are inward conduction and outward blockage and outward conduction and inward blockage, respectively.

[0041] Embodiment: When the bottom plate 4 moves up, that is, when demolding is performed, since the movable seat 147 moves upward at this time, the piston plate 153 can be driven to move upward. At this time, the piston rod 152 moves upward synchronously and generates negative pressure inside the air storage pipe 151. At this time, hot air is sucked into the inside of the air storage pipe 151 through the air inlet valve 154. When the mold is closed, the movable seat 147 moves downward, and the piston rod 152 moves downward synchronously, and the high-temperature and high-pressure air can be discharged through the exhaust valve 155, and enter the inside of the three-way valve 10 through the air supply pipe 9, and discharged through the hot air delivery head 11. Since the hollow preform is being closed at this time, the high-temperature air can be blown into the inside of the hollow preform, and the blow molding process of the serum bottle can be completed by cooperating with the mold cavity after the mold is closed. After the blow molding is completed, the bottom plate 4 continues to move downward, and the formed serum bottle is demolded and moves downward.

[0042] By reusing the heat generated when the plastic is melted and heated, and utilizing the up and down displacement of the bottom plate 4 during mold closing and demolding, the hot air can be absorbed and discharged, so that the device can just discharge the hot air when the hollow parison is closed and act on the inside of the parison. The whole process is completed automatically, and there is no need to set a heat source during blow molding. Only the heat source during melting can be used to complete the entire blow molding process, which effectively reduces energy consumption and production costs.

[0043] When the formed serum bottle is lowered, the guide wheel 7 can be opened to transport the formed serum bottle to the inside of the right mold assembly 8. When multiple mold assemblies 8 are molded, the hot air can be cooled by the cooling cavity 12 and then discharged through the cold air delivery head 13, and enter the rightmost mold assembly 8 to cool the formed serum bottle and accelerate its molding process. After cooling is completed, the demoulding process is repeated to remove the cooled serum bottle and complete the entire blow molding process through the transmission of the guide wheel 7. At the same time, during the cooling and molding, the mold assembly 8 on the left can still be used to close the hollow parison, while the mold assembly 8 in the middle can be used to blow mold the serum bottle. By repeating the above process, the automated continuous production process can be completed.

[0044] The automatic cooling process can be completed by cooling the hot air and then re-acting it on the serum bottle after mold closing. At the same time, in conjunction with the entire mold closing and demolding process, as well as the automatic transmission of the guide wheel 7, the mold closing molding of the hollow parison, the blow molding of the serum bottle, and the cooling molding of the serum bottle can be carried out simultaneously. The whole process is completed automatically and continuously without manual intervention. The degree of automation is high, and continuous automatic production of serum bottles can be realized, further improving production efficiency.

[0045] A working method of a continuously operated blow molding machine for producing serum bottles, comprising the following steps: S1: Before blow molding, plastic particles can be injected into the feed tank 305, and the motor 304 and the electric heating box 307 are turned on. At this time, the plastic particles can enter the extrusion cavity 301, and the electric heating box 307 can quickly heat the extrusion cavity 301, and melt the plastic particles through the extrusion of the screw 302 and the high temperature and transfer them to the electric heating die 306, and then lead out through the bottom end of the electric heating die 306 to form a hollow parison; S2: At the same time, the fan 308 can be turned on to input air into the first hot air pipe 309, and the hot air is guided to the inside of the power tank 141 through the first hot air pipe 309. At this time, the impeller 144 rotates and drives the main shaft 143 to rotate, and drives the first linkage rod 145 to swing. At this time, the second linkage rod 146 swings synchronously, and applies an upward pulling force and a downward thrust to the movable seat 147. At this time, the movable seat 147 can be driven to move up and down reciprocatingly, and the linkage frame 148 can be driven to move up and down reciprocatingly synchronously; S3: When the linkage frame 148 moves downward, the bottom plate 4 moves downward accordingly, and drives the support plate 6 to move downward. At this time, the two connecting rods 806 deflect accordingly, and drive the two guide rods 803 to be relatively close to each other. At this time, the front mold 801 and the rear mold 802 are relatively close to each other, and the mold is closed. At this time, the three mold assemblies 8 can respectively close the mold, blow mold and cool the hollow parison. When the bottom plate 4 moves upward, the support plate 6 moves upward accordingly, and the front mold 801 and the rear mold 802 are relatively far away from each other, and the demolding is completed. At this time, the corresponding hollow parison falls onto the support plate 6, and the hollow parison can be transferred to the inside of the middle mold assembly 8 by turning on the guide wheel 7; S4: At this time, the above process can be repeated to fix the hollow parison inside the middle mold assembly 8, and when the bottom plate 4 moves up, that is, demoulding is performed, the piston rod 152 can be driven to move up, and high-pressure hot air can be sucked into the inside of the air storage pipe 151 through the air storage pipe 151. When the mold is closed, that is, when the bottom plate 4 moves down, the piston rod 152 moves down accordingly, and the high-pressure hot air inside the air storage pipe 151 is discharged, and then it can be discharged to the inside of the three-way valve 10 through the air delivery pipe 9, and then discharged through the hot air delivery head 11. At this time, the middle mold assembly 8 is just in the mold closing process, and the discharged hot air is just blow-molded inside the hollow parison; S5: After the blow molding is completed, the above process is repeated. At this time, the blow-molded serum bottle can enter the rightmost mold assembly 8 and complete the mold closing. At this time, the hot air can be cooled by the cooling chamber 12 and then discharged through the cold air delivery head 13, and act on the inside of the molded serum bottle to complete the cooling. After the cooling is completed, the demolding process is repeated, and the serum bottle moves down to the bottom of the rightmost mold assembly 8, and the discharge process can be completed through the transmission of the guide wheel 7. By repeating the above process, the continuous production process can be completed.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous blow molding machine for producing serum bottles, comprising a frame (1), characterized in that: The top of the frame (1) is fixedly provided with lateral guide rails (2) at equal distances, the number of the lateral guide rails (2) being three in total, the tops of the three lateral guide rails (2) being movably connected with a mold assembly (8), a plastic pretreatment assembly (3) being provided above the mold assembly (8) on the left, a hot air delivery head (11) being provided above the mold assembly (8) in the middle, and a cold air delivery head (13) being provided above the mold assembly (8) on the right, the bottom end of the plastic pretreatment assembly (3) being fixedly connected with a power assembly (14), the bottom end of the power assembly (14) being installed with an air delivery assembly (15), the right end of the air delivery assembly (15) being fixedly connected with an air delivery pipe (9), the air delivery pipe (9) being away from the air delivery assembly One end of the (15) is fixedly connected to a three-way valve (10) located behind the hot air delivery head (11), the right end of the three-way valve (10) is fixedly connected to a cooling chamber (12), the front end of the right side of the cooling chamber (12) is connected to the rear end of the cold air delivery head (13), a bottom plate (4) is provided below the lateral guide rail (2), an extension rod (5) is fixedly installed at an equal distance on the top of the bottom plate (4), a support plate (6) located below the mold assembly (8) is provided above the bottom plate (4), the bottom end of the support plate (6) is connected to the top of the extension rod (5), a guide wheel (7) is movably installed at an equal distance on the top of the support plate (6), and a micro motor is built into the support plate (6) for controlling the rotation of the guide wheel (7).

2. The continuous blow molding machine for producing serum bottles according to claim 1 is characterized in that: The plastic pretreatment component (3) comprises an extrusion chamber (301), wherein the extrusion chamber (301) is fixedly connected to a feed tank (305) at an upper position near the rear end, a screw (302) is movably mounted inside the extrusion chamber (301), a mounting seat (303) is fixedly mounted at the rear end of the extrusion chamber (301), a motor (304) is fixedly mounted at one end of the mounting seat (303), an output end of the motor (304) is connected to the rear end of the screw (302), and the front end of the extrusion chamber (301) is fixedly connected to an electric heating die head (306) located at the front end of the screw (302), the interior of the electric heating die head (306) is connected to the interior of the extrusion chamber (301), and the bottom end of the electric heating die head (306) is located directly above the top end of the left mold component (8).

3. The continuous blow molding machine for producing serum bottles according to claim 2 is characterized in that: An electric heating box (307) is fixedly sleeved on the outer side surface of the extrusion cavity (301); a cavity is provided inside the electric heating box (307) and an electric heating pipe is installed therein; a fan (308) is fixedly installed on the top of the electric heating box (307); an output end of the fan (308) is connected to the inside of the electric heating box (307); a first hot air pipe (309) is fixedly connected to the bottom end of the electric heating box (307); and the first hot air pipe (309) is connected to the power assembly (14).

4. The continuous blow molding machine for producing serum bottles according to claim 3 is characterized in that: The power assembly (14) comprises a power tank (141), the top end of the power tank (141) being connected to the bottom end of the first hot air pipe (309), the bottom end of the power tank (141) being fixedly connected to a second hot air pipe (142), the other end of the second hot air pipe (142) being connected to the gas delivery assembly (15), the middle part of the power tank (141) being movably connected to a main shaft (143), the outer side surface of the main shaft (143) being fixedly sleeved with an impeller (144) located inside the power tank (141).

5. The continuous-operation blow molding machine for producing serum bottles according to claim 4 is characterized in that: The front and rear sides of the main shaft (143) penetrate the front and rear sides of the power tank (141) and are fixedly sleeved with a first linkage rod (145); one end of the first linkage rod (145) away from the main shaft (143) is movably connected to a second linkage rod (146) via a rotating shaft; the power assembly (14) further comprises a movable seat (147) located at the bottom end of the second linkage rod (146); the front and rear sides of the top end of the movable seat (147) are movably connected to the two second linkage rods (146); the middle part of the bottom end of the movable seat (147) is connected to the gas delivery assembly (15) and can only move up and down under the limit of the gas delivery assembly (15); the front side of the movable seat (147) is fixedly connected to a linkage frame (148); the other end of the linkage frame (148) is connected to the rear end of the left side of the bottom plate (4).

6. The continuous blow molding machine for producing serum bottles according to claim 5, characterized in that: The mold assembly (8) comprises a front mold (801) and a rear mold (802) which are symmetrically arranged in front and back. When the front mold (801) and the rear mold (802) are combined, a complete mold cavity is formed. The bottom ends of the front mold (801) and the rear mold (802) are fixedly connected to a guide rod (803). The bottom ends of the guide rods (803) are movably engaged with the lateral guide rails (2). The guide rods (803) are movable forward and backward relative to the lateral guide rails (2).

7. The continuous blow molding machine for producing serum bottles according to claim 6 is characterized in that: The bottom end of each guide rod (803) is fixedly connected to a first fixed seat (804); one end of each first fixed seat (804) away from the guide rod (803) is movably connected to a connecting rod (806) via a rotating shaft; one end of each connecting rod (806) away from the first fixed seat (804) is movably connected to a second fixed seat (805) via a rotating shaft; the bottom end of each second fixed seat (805) is connected to the top end of the bottom plate (4); and two second fixed seats (805) are mounted on the front and rear sides of the top end of the bottom plate (4).

8. The continuous blow molding machine for producing serum bottles according to claim 7 is characterized in that: The gas delivery assembly (15) comprises a gas storage pipe (151), a piston rod (152) being movably sleeved inside the gas storage pipe (151), a piston plate (153) being fixedly connected to the top end of the piston rod (152), and a top end of the piston plate (153) penetrating the top end of the gas storage pipe (151) and being connected to the bottom end of the movable seat (147).

9. A continuous blow molding machine for producing serum bottles according to claim 8, characterized in that: An intake valve (154) is fixedly connected to the rear side of the gas storage pipe (151) near the bottom end, and an exhaust valve (155) is symmetrically installed at the front side of the gas storage pipe (151) near the bottom end. The intake valve (154) is fixedly connected to the other end of the second hot gas pipe (142), and the other end of the exhaust valve (155) is connected to the gas delivery pipe (9). Both the intake valve (154) and the exhaust valve (155) are installed with a one-way valve inside, and the directions of the valves are respectively inwardly conducting and outwardly blocking, and outwardly conducting and inwardly blocking.

10. The working method of a continuous-operation blow molding machine for producing serum bottles according to claim 9, characterized in that: The following steps are involved: S1: Before blow molding, plastic particles can be injected into the feed tank (305), and the motor (304) and the electric heating box (307) are turned on. At this time, the plastic particles can enter the extrusion cavity (301), and the electric heating box (307) can quickly heat the extrusion cavity (301), and melt the plastic particles through the extrusion of the screw (302) and high temperature, and transfer them to the electric heating die (306), and then lead out through the bottom end of the electric heating die (306) to form a hollow parison; S2: At the same time, the fan (308) can be turned on to input air into the interior of the first hot air pipe (309), and the hot air is guided to the interior of the power tank (141) through the first hot air pipe (309). At this time, the impeller (144) rotates and drives the main shaft (143) to rotate, and drives the first linkage rod (145) to swing. At this time, the second linkage rod (146) swings synchronously therewith, and applies an upward pulling force and a downward thrust to the movable seat (147). At this time, the movable seat (147) can be driven to move up and down reciprocatingly, and the linkage frame (148) can be driven to move up and down reciprocatingly synchronously; S3: When the linkage frame (148) moves downward, the bottom plate (4) moves downward accordingly, and drives the support plate (6) to move downward. At this time, the two connecting rods (806) deflect accordingly, and drive the two guide rods (803) to move relatively close to each other. At this time, the front mold (801) and the rear mold (802) move relatively close to each other, and the mold closing is completed. At this time, the three mold assemblies (8) can respectively carry out the mold closing, blow molding and cooling of the hollow parison. When the bottom plate (4) moves upward, the support plate (6) moves upward accordingly, and the front mold (801) and the rear mold (802) move relatively away from each other, and the demolding is completed. At this time, the corresponding hollow parison falls onto the support plate (6), and the hollow parison can be transferred to the inside of the middle mold assembly (8) by turning on the guide wheel (7); S4: At this time, the above process can be repeated to fix the hollow parison inside the middle mold assembly (8), and when the bottom plate (4) moves up, that is, when demoulding is performed, the piston rod (152) can be driven to move up, and high-pressure hot air can be sucked into the inside of the air storage pipe (151) through the air storage pipe (151). When the mold is closed, that is, when the bottom plate (4) moves down, the piston rod (152) moves down accordingly and the high-pressure hot air inside the air storage pipe (151) is discharged. At this time, the high-pressure hot air can be discharged to the inside of the three-way valve (10) through the air delivery pipe (9), and then discharged through the hot air delivery head (11). At this time, the middle mold assembly (8) is just in the process of closing the mold, and the discharged hot air is just blow-molded inside the hollow parison; S5: After the blow molding is completed, the above process is repeated. At this time, the blow-molded serum bottle can enter the rightmost mold assembly (8) and complete the mold closing. At this time, the hot air can be cooled by the cooling chamber (12) and then discharged through the cold air delivery head (13), and act on the inside of the molded serum bottle to complete the cooling. After the cooling is completed, the demolding process is repeated, and the serum bottle moves down to the bottom of the rightmost mold assembly (8) and the discharge process can be completed through the transmission of the guide wheel (7). By repeating the above process, the continuous production process can be completed.

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