Multifunctional injection blow molding device and molding method

Abstract

The invention relates to a multifunctional injection blow molding device and method, and relates to the technical field of injection blow molding devices.The multifunctional injection blow molding device comprises a fixing frame, an injection mold, a blow mold, a quantitative box, an antioxidant box and a defoaming box which are arranged on the fixing frame, a feeding pipe arranged on the quantitative box and a connecting funnel arranged in the quantitative box; the antioxidant box is used for storing an antioxidant, the defoaming box is used for storing a defoaming agent, and the feeding pipe is used for feeding an oil tank melt into the quantitative box; the quantitative box is provided with a detection mechanism used for detecting the flow speed and the weight of oil tank melt, a control assembly used for controlling the feeding speed of an antioxidant and a defoaming agent and a stirring piece used for stirring the oil tank melt. The method has the effects that the mold filling time of the oil tank raw materials is prevented from being prolonged, the production cycle is prevented from being prolonged, the production progress of the oil tank can be improved, the fluidity of the oil tank raw materials is guaranteed, and it is guaranteed that the oil tank melt is optimized and kept in the optimal state through a defoaming agent and an antioxidant.

Description

Technical Field

[0001] The present application relates to the technical field of injection blow molding devices, and in particular to a multifunctional injection blow molding device and a molding method. Background Art

[0002] Injection blow molding machine, also known as injection blow hollow molding machine, is mainly divided into two types: translational type and rotary type. It includes injection mold and blow mold and injection blow core rod matched with injection mold and blow mold. The top of the injection blow core rod is provided with a blowing port. It is widely used in food and beverage industry, daily necessities manufacturing and household products and other fields.

[0003] The injection blow molding device is a device for producing plastic products. It uses the injection molding and blow molding process to inject the molten plastic material into the mold, and then expand the plastic material into a product of the desired shape by blowing. For example, the Chinese patent with the publication number CN118238393A in the related technology proposes a high-precision injection blow hollow molding machine. When large cylindrical parts are produced, the plastic sheet blank can be placed between the molding cavity and the molding pressure seat plate. When injection blow production is performed, the movable end of the hydraulic press can be used to drive the movable mold seat and the molding pressure seat plate to form a seal at the contact with the molding cavity after the mold is closed. After that, the heater on the molding pressure seat plate can be used to heat the plastic sheet blank, and the vacuum auxiliary component can be used to evacuate the molding cavity, so that the hot plastic sheet blank is deformed and attached to the inner wall of the molding cavity, thereby forming a large cylindrical part.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: the sizes of fuel tanks vary depending on the types of vehicles, and therefore an injection blow molding device is usually required to blow mold fuel tanks of different sizes. However, the injection mold of the current injection blow molding device has the disadvantage of being inconvenient to adjust, which makes it inconvenient to adjust the injection mold according to the size of the fuel tank to be processed, and can only perform injection blow molding on fuel tanks of specified sizes. When it is necessary to process fuel tanks of different sizes, an injection mold of a specified size is also required for blow molding, which not only limits the scope of use of the injection mold, but also affects the production efficiency of the fuel tank. Summary of the invention

[0005] In order to solve the disadvantage that the current injection blow molding device is not easy to adjust, which makes the molding device not easy to adjust according to the model and size of the oil tank to be processed, and can only perform injection blow molding on the oil tank of a specified size, resulting in the need to process oil tanks of different models and sizes, and also requires an injection blow molding mold of a specified size for processing, the present application provides a multifunctional injection blow molding device and molding method.

[0006] The present application provides a multifunctional injection blow molding device and molding method using the following technical solutions: A multifunctional injection blow molding device comprises a fixing frame, an injection mold arranged on the fixing frame, a blow molding mold, a quantitative box, an anti-oxidation box and a defoaming box, a feed pipe arranged on the quantitative box and a connecting funnel arranged in the quantitative box, and six screw feeders are arranged on the outer side of the feed pipe; The antioxidant box is used to store antioxidants, the defoaming box is used to store defoaming agents, and the feed pipe is used to put the oil tank melt into the quantitative box; The quantitative box is provided with a detection mechanism for detecting the flow rate and weight of the molten material in the oil tank, a control component for controlling the delivery speed of the antioxidant and the defoaming agent, and a stirring member for stirring the molten material in the oil tank; The control assembly comprises a power plate movably arranged in the quantitative box, and the power plate is provided with an extrusion member for extruding and pushing the antioxidant and the defoaming agent; The anti-oxidation box and the defoaming box are both provided with a pushing assembly for pushing the antioxidant and the defoaming agent, and the pushing assembly includes a pushing rack movably arranged inside the anti-oxidation box and the defoaming box and a pushing member for pushing the two pushing racks; The injection mold is provided with an adjustment component for adjusting the internal space, and the adjustment component includes two adjustment plates movably arranged inside the injection mold and an adjustment member for adjusting the two adjustment plates; The detection mechanism includes a flow rate detection component and a weight detection component, the flow rate detection component includes a wedge block movably arranged inside the connecting funnel, and the wedge block is provided with a control member for controlling the flow of the antioxidant and the defoaming agent; The weight detection assembly includes a support plate movably arranged inside the quantitative box and a limiting member for limiting the support plate, and a power member for driving the pushing member is arranged on the support plate; The blow mold comprises a left mold and a right mold, the fixing frame is provided with a splicing piece for splicing the left mold and the right mold, and the injection mold is provided with a blow injection piece for blowing the fuel tank blank.

[0007] By adopting the above technical scheme, antioxidants can be added into the quantitative box through the antioxidant box to be integrated with the tank melt, so as to avoid the oxidative degradation of the tank melt due to the influence of oxygen during injection blow molding. Defoaming agents can be added into the quantitative box through the defoaming box to be integrated with the tank melt, so as to avoid the generation of bubbles in the tank raw materials during injection blow molding. When the support plate is pressed down by the weight of the tank melt, it will drive the power part and then drive the pushing part. The antioxidants and defoaming agents in the antioxidant box and the defoaming box can be pushed through the pushing part. The specified amount of antioxidants and defoaming agents can be added according to the weight of the tank melt, and the small The designated antioxidant and defoamer are added to the melt of the oil tank, the melt of the medium oil tank and the melt of the large oil tank to avoid the phenomenon of adding too much or too little antioxidant and defoamer. The melt of the oil tank can be temporarily stored in the quantitative box. At the same time, the melt of the oil tank in the quantitative box can be quantitatively measured by the weight detection component. Then, the limiter can put in a designated amount of melt of the oil tank according to the size of the oil tank to be processed. The melt of the small oil tank, the melt of the medium oil tank and the melt of the large oil tank can be put in according to the size of the oil tank to be processed, so as to avoid the phenomenon of mismatch of raw materials when the raw materials of the oil tank are being formed; In order to process fuel tanks of different sizes, it is usually necessary to put in a specified amount of fuel tank raw materials. However, the current injection blow molding device is not convenient for accurately controlling the raw materials of the fuel tanks. It is not convenient to put in the specified fuel tank raw materials according to the size of the fuel tank to be processed, which makes it easy for the fuel tank raw materials to be mismatched during the molding process. It is easy to have too much or too little raw materials. When the fuel tank raw materials are injected and blown, too much raw materials may cause the fuel tank raw materials to accumulate too thickly, resulting in a waste of raw materials. Too little raw materials may cause insufficient supply of fuel tank raw materials, resulting in the fuel tank being unable to completely fill the mold, resulting in cracks and deformation. At the same time, in order to ensure the quality of injection blow molding of fuel tank raw materials, it is usually necessary to add antioxidants and defoaming agents to the fuel tank raw materials to prevent the fuel tank raw materials from being affected by oxygen during injection blow molding and oxidative degradation, avoid spots, cracks, discoloration and aging on the surface of the fuel tank, ensure the performance of the fuel tank, and increase the service life of the fuel tank. At the same time, it is easy to avoid bubbles in the fuel tank raw materials during injection blow molding and prevent appearance defects. However, at present, the amount of antioxidants and defoaming agents added is often inconsistent, which makes the performance of the fuel tank raw materials appear The difference is that too much defoaming agent and too little antioxidant will greatly reduce the antioxidant performance of the fuel tank raw material, and at the same time affect the fluidity of the fuel tank raw material, accelerate the fluidity of the fuel tank raw material, reduce the surface quality of the fuel tank, and make the fuel tank surface rough, with defects and flow marks. Too little defoaming agent and too much antioxidant will cause too many bubbles on the surface of the fuel tank raw material, affecting the appearance quality of the fuel tank, and at the same time affect the fluidity of the fuel tank raw material, slow down the fluidity of the fuel tank raw material, make the fuel tank raw material filling time longer, and the production cycle longer, thus affecting the production progress of the fuel tank; The specified tank melt in the quantitative box can be shaped into a tank blank through the injection mold. The small tank blank, medium tank blank and large tank blank of specified size can be formed according to the amount of the tank melt through the adjusting part, so as to facilitate the injection and blowing of different types of tanks. The shaped tank blank can be placed through the blow molding mold. The tank blank in the blow molding mold can be injection-blow molded through the blow-injection part. The blow molding mold can be disassembled and replaced through the splicing part, so as to replace the size of the tank model to be injected and blown. The tank of the specified size can be processed. At the same time, the left mold and the right mold can be moved to facilitate the rapid discharge of the injection and blown tank. The delivery speed of the antioxidant and the defoaming agent can be controlled respectively through the control component. When the delivery speed of the defoaming agent is too fast, the extrusion part can speed up the delivery speed of the antioxidant. When the antioxidant When the speed of adding the defoamer is too fast, the extrusion part can speed up the speed of adding the defoamer, so that the adding ratio of the antioxidant and the defoamer can be kept consistent, and the phenomenon of too much defoamer and too little antioxidant, or too much antioxidant and too little defoamer can be avoided as much as possible. The stirring part can effectively mix the tank melt, antioxidant and defoamer. The flow rate detection component can detect the flow rate of the tank melt in the quantitative box. When the flow rate of the tank melt is too fast, it means that too much defoamer and too little antioxidant are added. At this time, the control part can be driven to reduce the amount of defoamer and increase the amount of antioxidant to avoid a significant reduction in the antioxidant performance of the tank melt. When the flow rate of the tank melt is too slow, it means that too little defoamer and too much antioxidant are added. At this time, the control part can be driven to reduce the amount of antioxidant and increase the amount of defoamer to prevent defects in the appearance of the tank.

[0008] Optionally, the extrusion member includes a connecting block hinged on the power plate, a fixed block hinged on the quantitative box, an extrusion spring fixed on the inner side of the fixed block, an anti-oxidation tube fixed on the anti-oxidation box, a defoaming tube fixed on the defoaming box, an adjusting rod movably arranged on the power plate, an extrusion block fixed on the inner sides of the anti-oxidation box and the defoaming box, a movable spring fixed on the extrusion block, and a power rod rotatably arranged on the inner sides of the anti-oxidation box and the defoaming box. The number of the fixed block, the extrusion spring, the connecting block, the adjusting rod, the extrusion block and the power rod are all two, the two power rods are movably fitted with the two adjusting rods respectively, the two power rods are hinged with the two extrusion blocks respectively, the number of the movable springs is two groups, the number of the movable springs in each group is four, the two groups of movable springs are fixedly connected to the anti-oxidation box and the defoaming box respectively, the two extrusion blocks are respectively located directly above the defoaming tube and the anti-oxidation tube, and the bottom ends of the defoaming tube, the anti-oxidation tube and the feeding tube are all movably fitted with the power plate.

[0009] By adopting the above technical solution, the feed pipe can pour the molten material in the oil tank into the quantitative box. The weight of the falling molten material in the oil tank makes the power plate move and the two extrusion springs are in a stretched state. The molten material in the oil tank will flow along the power plate to the connecting funnel. At the same time, the defoaming agent in the defoaming box and the antioxidant in the antioxidant box will flow into the quantitative box to mix with the molten material in the oil tank, thereby enhancing the quality of the molten material in the oil tank. When the falling speed of the defoaming agent is slower than that of the antioxidant, the antioxidant, together with the pressure of the molten material in the oil tank, will make the power plate tilt toward the antioxidant pipe, and will push the adjusting rod close to the defoaming box to move upward, thereby driving the power rod on the defoaming box to swing, and cooperating with the movable spring The spring can drive the extrusion block on the defoaming box to move downward, squeeze the defoaming agent at the defoaming pipe downward, and increase the pressure speed of the defoaming agent falling. When the falling speed of the antioxidant is slower than that of the defoaming agent, the power plate tilts toward the defoaming pipe, which will push the adjusting rod close to the antioxidant box to move upward, thereby driving the power rod on the antioxidant box to swing. The movable spring can drive the extrusion block on the antioxidant box to move downward, squeeze the defoaming agent at the antioxidant pipe downward, and increase the pressure speed of the antioxidant falling, so that the power plates are gradually parallel, so that the feeding ratio pressure of the defoaming agent and the antioxidant is kept consistent as much as possible, and the effect of feeding the defoaming agent and the antioxidant at the same time is guaranteed.

[0010] Optionally, the control component includes a connecting rod fixed on the wedge block, a second control plate fixed on the wedge block, a first control plate fixed on the connecting rod, and two connecting springs fixed on the first control plate, the two connecting springs are fixedly connected to the connecting funnel, and liquid gaps are provided between the first control plate and the anti-oxidation tube and between the second control plate and the defoaming tube.

[0011] By adopting the above technical solution, when it is necessary to put the oil tank melt on the support plate, the solenoid valve is first opened to allow the oil tank melt on the connecting funnel to gradually flow to the support plate. The degree of optimization of the oil tank melt by the defoaming agent and the antioxidant can be detected through the falling flow rate of the oil tank melt. When the oil tank melt falls too fast, it means that there is too much defoaming agent and too little antioxidant in the oil tank melt. The falling speed of the oil tank melt can push the wedge block to move so that the two connecting springs are in a stretched state, which can drive the first control plate and the second control plate to move, so that the liquid gap between the first control plate and the antioxidant tube becomes larger, and the liquid gap between the second control plate and the defoaming tube becomes smaller, thereby increasing the amount of antioxidant put in. Reduce the amount of defoaming agent added. At the same time, when the speed at which the molten material in the oil tank falls is too slow, it means that there is too little defoaming agent and too much antioxidant in the molten material in the oil tank. The molten material in the oil tank falls slowly, which is not enough to push the wedge block to drive the elastic force of the two connecting springs. At this time, the two connecting springs will be in a relaxed state. The first control plate and the second control plate can be driven to move through the two connecting springs, so that the liquid gap between the first control plate and the antioxidant tube becomes smaller, and the liquid gap between the second control plate and the defoaming tube becomes larger, thereby reducing the amount of antioxidant added and increasing the amount of defoaming agent added, thereby making the amounts of antioxidant and defoaming agent added consistent, so as to keep the flow rate of the molten material in the oil tank at the best state.

[0012] Optionally, the limiting member includes multiple compression springs, coil springs and telescopic covers fixed on the support plate, a buffer block fixed on the coil spring, a solenoid valve fixed on the connecting funnel, a connecting frame fixed on the metering box, three first switches and a second switch fixed on the connecting frame, four movable blocks movably arranged on the metering box, annular springs respectively fixed to the outsides of the four movable blocks, a connecting pipe fixed on the metering box and a feed pump fixed on the connecting pipe, the telescopic cover and the injection mold are both connected to the connecting pipe, the telescopic cover is connected to the support plate, the four movable blocks are selectively fitted with the buffer blocks, the four movable blocks are movably fitted with the three first switches and the second switches respectively, the three first switches and the second switches are both electrically connected to the feed pump and the solenoid valve, and the four annular springs are fixedly connected to the metering box.

[0013] By adopting the above technical solution, when the molten material in the oil tank gradually flows onto the support plate, due to the gradual increase in the weight of the molten material in the oil tank, multiple compression springs will be in a compressed state and the support plate will move downward. When it is necessary to process an oil tank of a specified size, the first switch at the specified position can be opened, and then as the support plate moves downward, the buffer block will also be driven to move downward. When the buffer block corresponds to the specified first switch, the elastic force of the coil spring can push the buffer block, and the movable block can be pushed to move so that the annular spring is in a compressed state. Then, when the movable block moves, it will fit in with the specified first switch to start and trigger the solenoid valve to close and open the pumping pump, thereby achieving quantitative measurement of the specified molten material in the oil tank. The pumping pump can draw the molten material in the oil tank above the support plate into the injection mold.

[0014] Optionally, the pushing member includes a spiral push plate fixed on the pushing frame, a spiral rod rotatably arranged on the anti-oxidation box and the defoaming box, and a partition plate fixed on the inner side of the anti-oxidation box and the defoaming box, and the number of the spiral push plate, the spiral rod and the partition plate are two, the two spiral rods are respectively threadedly connected to the two spiral push plates, and the two spiral push plates are respectively arranged on the two pushing frames; The power member comprises two fixed racks fixed on the support plate and movable gears respectively fixed on the two spiral rods, and the two fixed racks are respectively meshed with the two movable gears.

[0015] By adopting the above technical solution, when the support plate moves downward due to the weight of the molten material in the oil tank, it will drive the two fixed racks to move downward, and then drive the two movable gears and the two spiral rods to rotate respectively, thereby driving the two spiral push plates and the two pushing racks to move relative to each other. When the two pushing racks move relatively, the antioxidant and defoaming agent inside the antioxidant box and the defoaming box can be pushed respectively, and the antioxidant and defoaming agent can be put into the quantitative box through the antioxidant tube and the defoaming tube respectively. The position of the two pushing racks can be adjusted by the moving distance of the support plate, and a specified amount of antioxidant and defoaming agent can be pushed according to the pushing of the molten material in the oil tank inside the quantitative box.

[0016] Optionally, the adjusting member includes a plurality of buffer springs and telescopic springs fixed on two adjusting plates and a limiting arc block fixed on the telescopic springs, the plurality of buffer springs are evenly distributed on the two adjusting plates, the plurality of buffer springs are fixed on the inner side of the injection mold, a partition frame is provided on the inner side of the injection mold, an arc-shaped slot is provided on the inner side of the injection mold, the number of the telescopic springs and the limiting arc blocks are both two groups, the number of the telescopic springs and the limiting arc blocks in each group is two, the number of the arc slots are four groups, the number of the arc slots in each group is three, the three arc slots are selectively engaged with the limiting arc block, and the outlet of the connecting pipe is located above between the two adjusting plates.

[0017] By adopting the above technical solution, when all the oil tank molten material above the support plate is drawn into the injection mold, the increase of the oil tank molten material and the pressure will push the two adjustment plates to move opposite to each other. When the two adjustment plates are moved to the designated arc-shaped slots respectively, the four limiting arc blocks can be pushed into the corresponding four arc-shaped slots respectively through the elastic force of the four telescopic springs, so as to limit the two adjustment plates, and then the oil tank molten material can be shaped into oil tank blanks through the two adjustment plates. Small oil tank blanks, medium oil tank blanks and large oil tank blanks can be processed respectively according to the amount of oil tank molten material above the support plate.

[0018] Optionally, the blow-in part includes a hydraulic rod fixed on the injection mold, an injection baffle is provided at the output end of the hydraulic rod, a hair dryer is provided at the bottom of the injection baffle, a telescopic plug is provided at the air outlet of the hair dryer, an electric lifting rod is provided at the bottom of the injection baffle, the output end of the electric lifting rod is fixedly connected to the telescopic plug, a discharge hole is opened at the bottom of the injection mold, and the injection baffle is movably fitted with the discharge hole.

[0019] By adopting the above technical scheme, the injection molding baffle can be driven by the hydraulic rod to translate, so that the injection molding baffle is separated from the discharge hole, so that the bottom of the fuel tank blank will lose its limit, and the fuel tank blank will flow out of the injection mold due to gravity and fall into the blow molding mold. The injection molding baffle is then driven by the hydraulic rod to translate, and the telescopic insert is moved to the top between the left mold and the right mold. The electric lifting rod drives the telescopic insert to move downward and insert into the fuel tank blank. The hair dryer blows wind into the fuel tank blank, and the left mold and the right mold are cooperated to realize the blow molding of the fuel tank blank.

[0020] Optionally, the splicing part includes two electric push rods fixed on a fixed frame, and a U-shaped frame is provided at the opposite end of the two electric push rods, and the two U-shaped frames are respectively movably connected to the left mold and the right mold, and the left mold and the right mold are movably fitted together, and the inner sides of the two U-shaped frames are threadedly connected with movable screws, and the top ends of the two movable screws are provided with movable turning handles, and the bottom ends of the two movable screws are provided with movable clamping blocks, and the two movable clamping blocks are respectively movably connected to the left mold and the right mold.

[0021] By adopting the above technical scheme, the left mold and the right mold can be separated and closed by two electric push rods to drive the left mold and the right mold to move back or relative to each other, so as to realize the rapid demoulding of the oil tank, and avoid the phenomenon that the left mold and the right mold are offset during use or the oil tank blank is injected and blown. Through the cooperation between two U-shaped frames, two movable screws, two movable handles and two movable clamping blocks, the left mold and the right mold can be installed, fixed or disassembled to avoid the phenomenon that the left mold and the right mold fall off during use. At the same time, the left mold and the right mold can be replaced to replace the left mold and the right mold of the specified model and size.

[0022] Optionally, the stirring member includes a plurality of stirring blades and a stirring shaft rotatably arranged in a quantitative box and a motor fixed on the quantitative box, the plurality of stirring blades are evenly fixed on the outside of the stirring shaft, and the stirring shaft is fixedly connected to the output shaft of the motor.

[0023] By adopting the above technical scheme, the stirring shaft and the multiple stirring blades can be driven to rotate in sequence by the motor. When the multiple stirring blades rotate, the fuel tank melt can be stirred, and the fuel tank melt, antioxidant and defoaming agent can be mixed to prevent the fuel tank melt from being affected by oxygen and oxidative degradation during injection blow molding. At the same time, it can avoid the fuel tank melt from being easily generated with bubbles during injection blow molding, thereby preventing defects in the appearance of the fuel tank.

[0024] A multifunctional injection blow molding method provided in the second aspect of the present application adopts the following technical solution: The embodiment of the present application also discloses a multifunctional injection blow molding method, based on the above-mentioned multifunctional injection blow molding device, comprising the following steps: S1. Pour the oil tank melt into the quantitative box through six screw feeders and feed pipes. The weight of the oil tank melt falling will separate the power plate from the feed pipe, defoaming pipe and antioxidant pipe. The oil tank melt will flow to the connecting funnel. The defoaming agent in the defoaming box and the antioxidant in the antioxidant box will also flow into the quantitative box to mix with the oil tank melt. The stirring element can enhance the mixing effect of the tank melt, antioxidant and defoaming agent, reduce the number of bubbles in the oil tank melt and prolong the oxidation induction period. S2. When the falling speed of the defoamer is slower than that of the antioxidant, the power plate will drive the extrusion member to drive the extrusion block on the defoamer box to move downward, squeeze the defoamer at the defoamer tube downward, and increase the pressure speed of the defoamer falling. When the falling speed of the antioxidant is slower than that of the defoamer, the power plate will drive the extrusion member to drive the extrusion block on the antioxidant box to move downward, squeeze the defoamer at the antioxidant tube downward, and increase the pressure speed of the antioxidant falling, so that the feeding ratio pressure of the defoamer and the antioxidant falling is consistent, so as to ensure the effect of feeding the defoamer and the antioxidant at the same time; S3. When the oil tank melt is placed on the support plate, the solenoid valve is opened to allow the oil tank melt on the connecting funnel to gradually flow to the support plate. When the oil tank melt falls too fast, it means that there is too much defoaming agent and too little antioxidant in the oil tank melt. The falling speed of the oil tank melt can push the wedge block to move so that the two connecting springs are in a stretched state, driving the first control plate and the second control plate to move, so that the liquid gap between the first control plate and the antioxidant tube becomes larger, and the liquid gap between the second control plate and the defoaming tube becomes smaller, thereby increasing the amount of antioxidant placed and reducing the amount of defoaming agent placed. When the oil tank When the molten material falls too slowly, it means that there is too little defoamer and too much antioxidant in the molten material of the oil tank. The molten material of the oil tank falls slowly and is not enough to push the wedge block. At this time, the two connecting springs are in a relaxed state, which can drive the first control plate and the second control plate to move, so that the liquid gap between the first control plate and the antioxidant tube becomes smaller, and the liquid gap between the second control plate and the defoaming tube becomes larger, which can reduce the amount of antioxidant added and increase the amount of defoamer added. The amount of antioxidant and defoamer added can be kept consistent, so as to ensure that the defoamer and antioxidant optimize the molten material of the oil tank and keep it in the best state; S4. When the molten material in the oil tank gradually flows onto the support plate, the weight gradually increases, which will cause multiple compression springs to be in a compressed state. The support plate will move downward. When a specified size of oil tank needs to be processed, the first switch at the specified position can be turned on. When the buffer block corresponds to the specified first switch, the elastic force of the coil spring can push the buffer block, which can push the movable block to move so that the annular spring is in a compressed state. Then, when the movable block moves, it will fit with the specified first switch to start and trigger the electromagnetic valve to close and the pumping pump to open, so as to achieve the specified amount of molten material in the oil tank. The pumping pump can pump the molten material in the oil tank above the support plate into the injection mold. S5. When the support plate moves downward due to the weight of the molten material in the oil tank, it will also drive the power part and the pushing part to drive, and when the two pushing racks can be driven to move relatively, the antioxidant and defoaming agent in the antioxidant box and the defoaming box can be pushed respectively, and the antioxidant and defoaming agent can be put into the quantitative box, and the specified amount of antioxidant and defoaming agent can be pushed according to the molten material in the oil tank inside the quantitative box; S6. When all the molten oil tank material above the support plate is drawn into the injection mold, the increase of the molten oil tank material and the pressure will push the two adjustment plates to move in opposite directions. At the same time, the adjustment member can limit the two adjustment plates, and then the molten oil tank material can be shaped into a fuel tank blank through the two adjustment plates, and small fuel tank blanks, medium fuel tank blanks and large fuel tank blanks can be processed respectively; S7. After the fuel tank blank inside the injection mold is formed, the fuel tank blank can be placed in the blow mold through the blow injection part, and the blow molding of the fuel tank blank can be realized by cooperating with the left mold and the right mold. The left mold and the right mold can be separated, closed, and disassembled through the splicing parts, so that the fuel tank can be quickly demolded and the left mold and the right mold can be replaced to replace the left mold and the right mold of the specified model and size.

[0025] By adopting the above technical scheme, antioxidants and defoamers are added to the fuel tank raw materials, which can ensure the quality of injection blow molding of the fuel tank raw materials, prevent the fuel tank raw materials from being affected by oxygen during injection blow molding and oxidative degradation, avoid spots, cracks, discoloration and aging on the fuel tank surface, and avoid bubbles easily generated in the fuel tank raw materials during injection blow molding. The amount of antioxidants and defoamers added can be kept consistent, avoid differences in the performance of the fuel tank raw materials, avoid too much defoamer and too little antioxidant causing a significant reduction in the antioxidant performance of the fuel tank raw materials, avoid accelerated fluidity of the fuel tank raw materials, reduce the surface quality of the fuel tank, prevent the fuel tank surface from being rough, flawed and flow marks, avoid too little defoamer and too much antioxidant causing excessive bubbles on the surface of the fuel tank raw materials, ensure the appearance quality of the fuel tank, avoid slowing down the fluidity of the fuel tank raw materials, prevent the fuel tank raw materials from filling the mold for a long time, and the production cycle from becoming longer, thereby improving the production progress of the fuel tank.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The molten material of the oil tank can be poured into the metering box through six spiral feeders and a feeding pipe. The weight of the falling molten material of the oil tank makes the two extrusion springs in a stretched state, and the molten material of the oil tank will flow along the power plate to the connecting funnel. The defoamer in the defoaming box and the antioxidant in the antioxidant box will also flow into the metering box to mix with the molten material of the oil tank, thereby reducing the number of bubbles in the molten material of the oil tank and prolonging the oxidation induction period. The stirring member drives the rotation of multiple stirring blades to enhance the mixing effect of the molten material, antioxidant and defoamer, and can make the antioxidant and defoamer evenly mixed in the molten material of the oil tank to ensure the stability of the molten material of the oil tank, prevent the molten material of the oil tank from being affected by oxygen and being oxidized and degraded during injection blow molding, and at the same time avoid the molten material of the oil tank from easily generating bubbles during injection blow molding, thereby preventing the appearance of the oil tank from being flawed; 2. When the falling speed of the defoamer is slower than that of the antioxidant, the power plate will drive the extrusion member to drive the extrusion block on the defoamer box to move downward, squeeze the defoamer at the defoamer tube downward, and increase the pressure speed of the defoamer falling. When the falling speed of the antioxidant is slower than that of the defoamer, the power plate will drive the extrusion member to drive the extrusion block on the antioxidant box to move downward, squeeze the defoamer at the antioxidant tube downward, and increase the pressure speed of the antioxidant falling, so that the feeding ratio pressure of the defoamer and the antioxidant falling is consistent, so as to ensure the effect of feeding the defoamer and the antioxidant at the same time; 3. When placing the oil tank melt on the support plate, open the solenoid valve to allow the oil tank melt on the connecting funnel to gradually flow to the support plate. When the oil tank melt falls too fast, it means that there is too much defoaming agent and too little antioxidant in the oil tank melt. The falling speed of the oil tank melt can push the wedge block to move so that the two connecting springs are in a stretched state, driving the first control plate and the second control plate to move, so that the liquid gap between the first control plate and the antioxidant tube becomes larger, and the liquid gap between the second control plate and the defoaming tube becomes smaller, thereby increasing the amount of antioxidant added and reducing the amount of defoaming agent added. When the oil tank melt falls, the wedge block can be pushed to move so that the two connecting springs are in a stretched state, driving the first control plate and the second control plate to move, so that the liquid gap between the first control plate and the antioxidant tube becomes larger, and the liquid gap between the second control plate and the defoaming tube becomes smaller, thereby increasing the amount of antioxidant added and reducing the amount of defoaming agent added. When the material falls too slowly, it means that there is too little defoamer and too much antioxidant in the molten material of the oil tank. The molten material of the oil tank falls slowly and is not enough to push the wedge block. At this time, the two connecting springs are in a relaxed state, which can drive the first control plate and the second control plate to move, so that the liquid gap between the first control plate and the antioxidant tube becomes smaller, and the liquid gap between the second control plate and the defoaming tube becomes larger, which can reduce the amount of antioxidant added and increase the amount of defoamer added. The amount of antioxidant and defoamer added can be kept consistent, so as to ensure that the defoamer and antioxidant optimize the molten material of the oil tank and keep it in the best state; 4. When the molten material in the oil tank gradually flows to the support plate, the weight gradually increases, which will cause multiple compression springs to be in a compressed state. The support plate will move downward. When a specified size of oil tank needs to be processed, the first switch at the specified position can be turned on. When the buffer block corresponds to the specified first switch, the elastic force of the coil spring can push the buffer block, which can push the movable block to move so that the annular spring is in a compressed state. Then, when the movable block moves, it will fit with the specified first switch to start and trigger the solenoid valve to close and open the pumping pump, so as to achieve the specified amount of molten material in the oil tank. Small, medium and large oil tank molten materials can be taken separately. The pumping pump can draw the molten material in the oil tank above the support plate into the injection mold. When the support plate moves downward due to the weight of the molten material in the oil tank, It will also drive the power parts and the pushing parts to drive, and when the two pushing racks are driven to move relatively, the antioxidants and defoamers in the antioxidant box and the defoaming box can be pushed respectively, and the antioxidants and defoamers can be put into the quantitative box, and a specified amount of antioxidants and defoamers can be pushed according to the amount of melt in the oil tank inside the quantitative box, and the positions of the two pushing racks can be adjusted by the moving distance of the support plate, and a specified amount of antioxidants and defoamers can be pushed according to the amount of melt in the oil tank inside the quantitative box. On the one hand, it can ensure that the antioxidants and defoamers inside the antioxidant box and the defoaming box can be smoothly put into the quantitative box, and on the other hand, the specified antioxidants and defoamers can be added according to the amount of melt in the small oil tank, the medium oil tank and the large oil tank, to ensure the optimization effect of the antioxidants and defoamers on the oil tank melt; 5. When the first switch is started and the electromagnetic valve is closed, the pumping pump will also be triggered to open, and then the oil tank melt above the support plate can be pumped into the injection mold through the telescopic cover and the connecting pipe through the pumping pump. When all the quantitative oil tank melt in the quantitative box is pumped into the injection mold, the increase of the oil tank melt and the pressure will push the two adjustment plates to move in opposite directions. At the same time, the adjustment parts can limit the two adjustment plates, and then the oil tank melt can be shaped by the two adjustment plates to form oil tank blanks. Small oil tank blanks, medium oil tank blanks and large oil tank blanks can be processed respectively. After the oil tank blanks on the inside of the injection mold are formed, the oil tank blanks can be placed in the blow molding mold through the blow injection parts. At the same time, the blow molding of the oil tank blanks can be realized by cooperating with the left mold and the right mold. The left mold and the right mold can be separated, closed and disassembled by the splicing parts, so that the oil tank can be quickly demolded. At the same time, the left mold and the right mold can be replaced to replace the left mold and the right mold of the specified model and size. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 A cross-sectional view of the connection structure of the anti-oxidation box in the embodiment of the present application; Figure 3 A cross-sectional view of the connection structure of the quantitative box in the embodiment of the present application; Figure 4 A cross-sectional view of the connection structure of the injection mold in the embodiment of the present application; Figure 5 Appearance diagram of the left mold connection structure in the embodiment of the present application; Figure 6 Embodiments of the present application Figure 5 Enlarged view of point F in the middle; Figure 7 A cross-sectional view of the defoaming box connection structure in the embodiment of the present application; Figure 8 Embodiments of the present application Figure 7 Enlarged view of point A in the middle; Fig. 9 Embodiments of the present application Figure 3 Enlarged view of point C in the middle; Fig.10 Embodiments of the present application Figure 7 Enlarged view of point B in the middle; Fig.11 Embodiments of the present application Figure 4 Enlarged view of point D in the middle; Fig.12 Embodiments of the present application Figure 3 Enlarged view of point E in the middle.

[0028] Figure numerals: 1, fixed frame; 2, quantitative box; 3, injection mold; 4, anti-oxidation box; 5, defoaming box; 6, defoaming tube; 7, anti-oxidation tube; 8, connecting funnel; 9, connecting rod; 10, wedge block; 11, connecting spring; 12, first control board; 13, second control board; 14, support plate; 15, compression spring; 16, fixed rack; 17, movable gear; 18, spiral rod; 19, spiral push plate; 20, push frame; 21, partition plate; 22, solenoid valve; 23, connecting frame; 24, first switch; 25, second switch; 26, movable block; 27, annular spring; 28, spiral spring; 29, buffer block; 30, telescopic cover; 31, connecting pipe; 32 , suction pump; 33, adjustment plate; 34, buffer spring; 35, telescopic spring; 36, limit arc block; 37, fixed block; 38, extrusion spring; 39, connecting block; 40, power plate; 41, adjustment rod; 42, movable spring; 43, extrusion block; 44, power rod; 45, hydraulic rod; 46, injection baffle; 47, blower; 48, telescopic plug; 49, electric lifting rod; 50, partition frame; 51, electric push rod; 52, U-shaped frame; 53, left mold; 54, right mold; 55, movable screw; 56, movable handle; 57, movable clamping block; 58, intelligent controller; 59, motor; 60, stirring shaft; 61, stirring blade; 62, feeding pipe. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-12 This application is described in further detail.

[0030] Embodiment 1:

[0031] The present application discloses a multifunctional injection blow molding device, referring to Figure 1 and Figure 2, including a fixing frame 1, an injection mold 3 fixed on the fixing frame 1, a quantitative box 2, an antioxidant box 4 and a defoaming box 5, a feeding pipe 62 fixed on the quantitative box 2, a blow molding mold arranged on the fixing frame 1 and a connecting funnel 8 fixed in the quantitative box 2, six screw feeders are fixedly connected to the outside of the feeding pipe 62, and the six screw feeders are all connected to the feeding pipe 62; the antioxidant box 4 is used to store antioxidants, the defoaming box 5 is used to store defoaming agents, and the feeding pipe 62 is used to put in the quantitative box 2 Fuel tank melt; the quantitative box 2 is provided with a detection mechanism for detecting the flow rate and weight of the fuel tank melt, a control component for controlling the delivery speed of the antioxidant and the defoaming agent, and a stirring member for stirring the fuel tank melt; the control component includes a power plate 40 movably arranged in the quantitative box 2, and the power plate 40 is provided with an extrusion member for extruding and pushing the antioxidant and the defoaming agent; the antioxidant box 4 and the defoaming box 5 are both provided with a pushing component for pushing the antioxidant and the defoaming agent, and the pushing component includes a pushing rack 20 movably arranged on the inner side of the antioxidant box 4 and the defoaming box 5 and a pushing member for pushing the two pushing racks 20; the injection mold 3 is provided with an adjustment component for adjusting the internal space, and the adjustment component includes two adjustment plates 33 movably arranged on the inner side of the injection mold 3 and an adjustment member for adjusting the two adjustment plates 33; the detection mechanism includes a flow rate detection component and a weight detection component, and the flow rate detection component includes a wedge block 10 movably arranged on the inner side of the connecting funnel 8, and the wedge block 1 0 is provided with a control part for controlling the flow of antioxidant and defoaming agent; the weight detection component includes a support plate 14 movably arranged on the inner side of the quantitative box 2 and a limiter for limiting the support plate 14, and the support plate 14 is provided with a power part for driving the pusher; the blow mold includes a left mold 53 and a right mold 54, the fixed frame 1 is provided with a splicing part for splicing the left mold 53 and the right mold 54, and the injection mold 3 is provided with a blow injection part for blowing the fuel tank blank.

[0032] The limiting member includes a plurality of compression springs 15 fixed on the support plate 14, a coil spring 28 and a telescopic cover 30, a buffer block 29 fixed on the coil spring 28, a solenoid valve 22 fixed on the connecting funnel 8, a connecting frame 23 fixed on the quantitative box 2, three first switches 24 and a second switch 25 fixed on the connecting frame 23, four movable blocks 26 movably arranged on the quantitative box 2, annular springs 27 respectively fixed to the outside of the four movable blocks 26, a connecting pipe 31 fixed on the quantitative box 2, and a connecting pipe 31 fixed on the connecting pipe 31. The feed pump 32, the telescopic cover 30 and the injection mold 3 are all connected to the connecting pipe 31, the telescopic cover 30 is connected to the support plate 14, the four movable blocks 26 are selectively fitted with the buffer blocks 29, the four movable blocks 26 are respectively movably fitted with the three first switches 24 and the second switches 25, the three first switches 24 and the second switches 25 are all electrically connected to the feed pump 32 and the solenoid valve 22, the four annular springs 27 are all fixedly connected to the quantitative box 2, four connecting holes are opened on the inner side of the quantitative box 2, and the four movable blocks 26 are respectively slidably connected to the four connecting holes.

[0033] The extrusion member includes a connecting block 39 hinged on the power plate 40, a fixed block 37 hinged on the quantitative box 2, an extrusion spring 38 fixed on the inner side of the fixed block 37, an anti-oxidation tube 7 fixed on the anti-oxidation box 4, a defoaming tube 6 fixed on the defoaming box 5, an adjusting rod 41 movably arranged on the power plate 40, an extrusion block 43 fixed on the inner sides of the anti-oxidation box 4 and the defoaming box 5, a movable spring 42 fixed on the extrusion block 43, and a power rod 44 rotatably arranged on the inner sides of the anti-oxidation box 4 and the defoaming box 5. The number of the fixed block 37, the extrusion spring 38, the connecting block 39, the adjusting rod 41, the extrusion block 43 and the power rod 44 are all two, the two power rods 44 are movably fitted with the two adjusting rods 41 respectively, the two power rods 44 are respectively hinged with the two extrusion blocks 43, the number of the movable springs 42 is two groups, and each group of movable springs 42 The number of them is four respectively, two groups of movable springs 42 are fixedly connected to the anti-oxidation box 4 and the defoaming box 5 respectively, and control valves are fixedly installed on the outer sides of the defoaming tube 6 and the anti-oxidation tube 7. The two extrusion blocks 43 are respectively located directly above the defoaming tube 6 and the anti-oxidation tube 7. The bottom end of the defoaming tube 6 penetrates the defoaming box 5 and the quantitative box 2 in turn and extends to the inner side of the quantitative box 2. The bottom end of the anti-oxidation tube 7 penetrates the anti-oxidation box 4 and the quantitative box 2 in turn and extends to the inner side of the quantitative box 2. The bottom end of the feeding tube 62 penetrates the quantitative box 2 in turn and extends to the inner side of the quantitative box 2. The bottom ends of the defoaming tube 6, the anti-oxidation tube 7 and the feeding tube 62 are all movably fitted with the power plate 40. The defoaming tube 6 and the anti-oxidation tube 7 can be opened or closed respectively by two control valves. Fixed through holes are provided on the tops of the two quantitative boxes 2, and the two adjusting rods 41 are slidably connected with the two fixed through holes respectively.

[0034] The control component includes a connecting rod 9 fixed on the wedge block 10, a second control plate 13 fixed on the wedge block 10, a first control plate 12 fixed on the connecting rod 9 and two connecting springs 11 fixed on the first control plate 12. The two connecting springs 11 are fixedly connected to the connecting funnel 8. The inner sides of the defoaming tube 6 and the antioxidant tube 7 are provided with fixed square holes. The first control plate 12 and the second control plate 13 are respectively slidably connected in the two fixed square holes. Liquid gaps are provided between the first control plate 12 and the antioxidant tube 7 and between the second control plate 13 and the defoaming tube 6. The wedge block 10 is a triangle with an inclined surface facing upward. Two fixed holes are provided on the inner side of the connecting funnel 8. The two fixed holes are respectively slidably connected to the connecting rod 9 and the second control plate 13. Adjustment holes are provided on the left and right sides of the quantitative box 2. The two adjustment holes are respectively slidably connected to the second control plate 13 and the first control plate 12.

[0035] An intelligent controller 58 is fixedly connected to the fixed frame 1, and the motor 59, the hair dryer 47, the electric lifting rod 49, the hydraulic rod 45, the two electric push rods 51, the solenoid valve 22, the three first switches 24, the second switch 25, the electric valve and the electric lifting rod 49 are all electrically connected to the intelligent controller 58. The motor 59, the hair dryer 47, the electric lifting rod 49, the hydraulic rod 45, the two electric push rods 51, the solenoid valve 22, the three first switches 24, the second switch 25, the electric valve and the electric lifting rod 49 can be controlled by the intelligent controller 58 to open or close at a scheduled time.

[0036] The adjusting member includes a plurality of buffer springs 34 and telescopic springs 35 fixed on two adjusting plates 33 and a limiting arc block 36 fixed on the telescopic spring 35. The plurality of buffer springs 34 are evenly distributed on the two adjusting plates 33. The plurality of buffer springs 34 are fixed to the inner side of the injection mold 3. The inner side of the injection mold 3 is fixedly connected with a partition frame 50. The inner side of the injection mold 3 is provided with an arc-shaped slot. The number of the telescopic springs 35 and the limiting arc block 36 are both two groups, and the number of each group of the telescopic springs 35 and the limiting arc block 36 is two. The number of the arc-shaped slots is four groups, and the number of each group of the arc-shaped slots is three. One of the three arc-shaped slots and the limiting arc block 36 is selected. The outlet of the connecting pipe 31 is located above the two adjusting plates 33, and the three arc-shaped slots are respectively the first slot, the second slot and the third slot. The inner side of the partition frame 50 is provided with diversion holes. The number of the diversion holes is two groups, and the number of the diversion holes in each group is six. The partition frame 50 is located between the two adjusting plates 33 to facilitate the separation and molding of the fuel tank melt. The partition frame 50 cooperates with the two adjusting plates 33 to form two fuel tank blanks to ensure the effect of subsequent injection blow molding of the fuel tank blanks. The partition frame 50 is located below the connecting pipe 31, and the two adjusting plates 33 are movably connected to the injection mold 3, and the two adjusting plates 33 are both movably connected to the partition frame 50.

[0037] The pushing member includes a spiral push plate 19 fixed on the pushing rack 20, a spiral rod 18 rotatably arranged on the anti-oxidation box 4 and the defoaming box 5, and a partition plate 21 fixed on the inner side of the anti-oxidation box 4 and the defoaming box 5. The number of the spiral push plate 19, the spiral rod 18 and the partition plate 21 are two. The two spiral rods 18 are respectively threadedly connected to the two spiral push plates 19. The two spiral push plates 19 are respectively fixedly connected to the two pushing racks 20. The inner sides of the two partition plates 21 are provided with sliding holes with the same diameter as the pushing rack 20. The pushing rack 20 is slidably connected to the sliding holes. Feeding pipes are fixedly connected to the anti-oxidation box 4 and the defoaming box 5.

[0038] The power part includes two fixed racks 16 fixed on the support plate 14 and movable gears 17 respectively fixed on two spiral rods 18. The two fixed racks 16 are respectively meshed with the two movable gears 17. Two fixed square holes are provided at the bottom of the quantitative box 2. The two fixed racks 16 are respectively slidably connected with the two fixed square holes. Antioxidants and defoaming agents can be added to the antioxidant box 4 and the defoaming box 5 respectively through two feeding pipes. The sliding hole and the pushing frame 20 can limit the spiral push plate 19 to rotate in a circle.

[0039] The stirring member includes a plurality of stirring blades 61 and a stirring shaft 60 rotatably arranged in the quantitative box 2 and a motor 59 fixed on the quantitative box 2. The plurality of stirring blades 61 are evenly fixed on the outside of the stirring shaft 60, and the stirring shaft 60 is fixedly connected to the output shaft of the motor 59.

[0040] The blow-in component includes a hydraulic rod 45 fixed on the injection mold 3, an injection baffle 46 is provided at the output end of the hydraulic rod 45, a blower 47 is provided at the bottom of the injection baffle 46, a telescopic plug 48 is provided at the air outlet of the blower 47, an electric lifting rod 49 is provided at the bottom of the injection baffle 46, the output end of the electric lifting rod 49 is fixedly connected to the telescopic plug 48, a discharge hole is provided at the bottom of the injection mold 3, the injection baffle 46 is movably fitted with the discharge hole, a sliding groove is provided on the inner side of the injection mold 3, the injection baffle 46 is slidably connected to the sliding groove, and the injection baffle 46 can be limited by the sliding groove.

[0041] The splicing parts include two electric push rods 51 fixed on the fixed frame 1, and the opposite ends of the two electric push rods 51 are fixedly connected to U-shaped frames 52, and the two U-shaped frames 52 are movably connected to the left mold 53 and the right mold 54 respectively. The left mold 53 and the right mold 54 are movably fitted together, and the inner sides of the two U-shaped frames 52 are threadedly connected with movable screws 55, and the top ends of the two movable screws 55 are fixedly connected with movable handles 56, and the bottom ends of the two movable screws 55 are fixedly connected with movable clamping blocks 57, and the two movable clamping blocks 57 are movably connected to the left mold 53 and the right mold 54 respectively, and the left mold 53 and the right mold 54 are movably connected to the telescopic insertion tube 48.

[0042] The implementation principle of a multifunctional injection blow molding device in the embodiment of the present application is: (1) The molten material in the oil tank can be poured into the quantitative box 2 through six screw feeders and the feed pipe 62. The weight of the falling molten material in the oil tank will move the two extrusion springs 38 of the power plate 40 to a stretched state, so that the power plate 40 is separated from the outlets of the feed pipe 62, the defoaming pipe 6 and the antioxidant pipe 7. The molten material in the oil tank will flow along the power plate 40 to the connecting funnel 8. At the same time, the defoaming agent in the defoaming box 5 will flow into the defoaming pipe 6, and the antioxidant in the antioxidant box 4 will flow into the antioxidant pipe 7. The defoaming agent and the antioxidant will flow along the power plate 40 to the quantitative box 2 to mix with the molten material in the oil tank, thereby reducing the number of bubbles in the molten material in the oil tank and prolonging the oxidation induction period. (2) The motor 59 can sequentially drive the stirring shaft 60 and the plurality of stirring blades 61 to rotate, thereby stirring the fuel tank melt, mixing the fuel tank melt, the antioxidant and the defoaming agent, and making the antioxidant and the defoaming agent uniformly mixed in the fuel tank melt, thereby preventing the fuel tank melt from being affected by oxygen and being oxidized and degraded during injection blow molding, and at the same time, preventing the fuel tank melt from being easily bubbled during injection blow molding, thereby preventing defects in the appearance of the fuel tank; (3) When the defoaming agent falls slower than the antioxidant, the antioxidant cooperates with the pressure of the melt in the oil tank to make the power plate 40 tilt toward the antioxidant pipe 7. The tilt of the power plate 40 blocks a part of the outlet of the feed pipe 62. Because the power plate 40 tilts toward the antioxidant pipe 7, it pushes the adjustment rod 41 near the defoaming box 5 to move upward, driving the power rod 44 on the defoaming box 5 to swing, so that the movable spring 42 on the defoaming box 5 is in a stretched state, which can drive the extrusion block 43 on the defoaming box 5 to move downward, and can squeeze the defoaming agent at the defoaming pipe 6 downward, thereby increasing the pressure speed of the defoaming agent falling. At the same time, when the antioxidant falls slower than the defoaming agent, the defoaming agent cooperates with the melt in the oil tank to increase the pressure speed of the defoaming agent falling. The pressure of the material will make the power plate 40 tilt toward the defoaming pipe 6. Due to the tilt of the power plate 40, a part of the outlet of the feed pipe 62 is blocked. Because the power plate 40 tilts toward the defoaming pipe 6, it will push the adjustment rod 41 close to the antioxidant box 4 to move upward, driving the power rod 44 on the antioxidant box 4 to swing, so that the movable spring 42 on the antioxidant box 4 is in a stretched state, and then the extrusion block 43 on the antioxidant box 4 can be driven to move downward, which can squeeze the defoaming agent at the antioxidant pipe 7 downward, strengthen the pressure speed of the antioxidant falling, and make the power plate 40 gradually parallel. Through the above principle, the feeding ratio pressure of the defoaming agent and the antioxidant falling is kept consistent as much as possible to ensure the effect of feeding the defoaming agent and the antioxidant at the same time; (4) When it is necessary to put the tank melt on the support plate 14, the solenoid valve 22 is automatically opened to allow the tank melt on the connecting funnel 8 to gradually flow onto the support plate 14. The degree to which the defoaming agent and the antioxidant optimize the tank melt can be detected by the falling flow rate of the tank melt. When the tank melt falls too fast, it means that there is too much defoaming agent and too little antioxidant in the tank melt. The falling speed of the tank melt can push the wedge block 10 to move so that the two connecting springs 11 are in a stretched state, which can drive the first control plate 12 and the second control plate 13 to move, so that the liquid gap between the first control plate 12 and the antioxidant tube 7 becomes larger, and the liquid gap between the second control plate 13 and the defoaming tube 6 becomes smaller, which can increase the amount of antioxidant put in and reduce the amount of defoaming agent put in. When the tank melt falls too slowly, it means that there is too little defoaming agent and too much antioxidant in the tank melt. The tank melt is not enough due to its slow falling speed. Push the wedge block 10 to drive the elastic force of the two connecting springs 11. At this time, the two connecting springs 11 will be in a relaxed state. The two connecting springs 11 can drive the first control plate 12 and the second control plate 13 to move, so that the liquid gap between the first control plate 12 and the antioxidant tube 7 becomes smaller, and the liquid gap between the second control plate 13 and the defoaming tube 6 becomes larger, which can reduce the amount of antioxidant added, increase the amount of defoaming agent added, and keep the amount of antioxidant and defoaming agent added consistent, so as to keep the flow speed of the tank melt in the best state, so as to ensure that the defoaming agent and antioxidant optimize the effect of keeping the tank melt in the best state. When the flow speed of the tank melt is the medium-speed optimal state, the wedge block 10 can be moved to the middle position of the connecting funnel 8 through the tank melt, so that the liquid gap between the first control plate 12 and the antioxidant tube 7 is consistent with the liquid gap between the second control plate 13 and the defoaming tube 6. (5) When the molten material in the oil tank gradually flows onto the support plate 14, due to the gradual increase in the weight of the molten material in the oil tank, the multiple compression springs 15 will be in a compressed state and the support plate 14 will move downward. When a small oil tank needs to be processed, the first switch 24 at the top can be opened. As the support plate 14 moves downward, the buffer block 29 will also be driven to move downward. When the buffer block 29 corresponds to the movable block 26 corresponding to the first switch 24 at the top, the elastic force of the coil spring 28 can push the buffer block 29, which can push the movable block 26 to move and compress the annular spring 27. When the movable block 26 moves, it will fit with the first switch 24 at the top, so that the first switch 24 at the top starts to trigger the closing of the solenoid valve 22, thereby achieving the quantitative measurement of the molten material in the small oil tank. When a medium-sized oil tank needs to be processed, the first switch 24 in the middle can be opened. Through the above principle, when the buffer block 29 corresponds to the movable block 26 corresponding to the first switch 24 at the top, as the molten material in the oil tank continues to increase, the support plate 14 will be opened. The support plate 14 continues to move downward, and when the buffer block 29 corresponds to the movable block 26 corresponding to the first middle switch 24, the movable block 26 can be pushed to move so that the annular spring 27 is in a compressed state. When the movable block 26 moves, it will fit with the first middle switch 24, so that the first middle switch 24 starts to trigger the closing of the solenoid valve 22, thereby achieving quantitative measurement of the molten material in the medium-sized oil tank. When it is necessary to process a large oil tank, the first switch 24 at the bottom can be opened. Through the above principle, when the buffer block 29 corresponds to the movable block 26 corresponding to the first middle switch 24, as the molten material in the oil tank continues to increase, the support plate 14 continues to move downward, and when the buffer block 29 corresponds to the movable block 26 corresponding to the first bottom switch 24, the movable block 26 can be pushed to move so that the annular spring 27 is in a compressed state. When the movable block 26 moves, it will fit with the first bottom switch 24, so that the first bottom switch 24 starts to trigger the closing of the solenoid valve 22, thereby achieving quantitative measurement of the molten material in the large oil tank. (6) When the support plate 14 moves downward due to the weight of the melt in the oil tank, it will also drive the two fixed racks 16 to move downward, which will respectively drive the two movable gears 17 and the two screw rods 18 to rotate, and will respectively drive the two screw push plates 19 and the two push racks 20 to move relative to each other, so as to push the antioxidant and defoaming agent in the antioxidant box 4 and the defoaming box 5 respectively, and put the antioxidant and defoaming agent into the quantitative box 2 through the antioxidant tube 7 and the defoaming tube 6 respectively; (7) The positions of the two pushing racks 20 are adjusted by the moving distance of the support plate 14. A specified amount of antioxidant and defoaming agent can be pushed according to the amount of the oil tank melt inside the quantitative box 2. On the one hand, it can ensure that the antioxidant and defoaming agent inside the antioxidant box 4 and the defoaming box 5 can be smoothly put into the quantitative box 2. On the other hand, the specified antioxidant and defoaming agent can be added according to the amount of small oil tank melt, medium oil tank melt and large oil tank melt, so as to ensure the optimization effect of the antioxidant and defoaming agent on the oil tank melt. According to the above principle, when the first switch 24 is started to trigger the electromagnetic valve 22 to be closed, it will also trigger the pumping pump 32 to open. The pumping pump 32 can pump the oil tank melt above the support plate 14 into the injection mold 3 through the telescopic cover 30 and the connecting pipe 31. The telescopic cover 30 can make the connecting pipe 31 and the support plate 14 have a telescopic effect. (8) When all the measured oil tank melt in the quantitative box 2 is drawn into the injection mold 3, the multiple buffer springs 34 are in a compressed state due to the influence of pressure, which will push the two adjustment plates 33 to move. When all the small oil tank melt above the support plate 14 is drawn into the injection mold 3, the increase of the small oil tank melt and the pressure will push the two adjustment plates 33 to move in opposite directions. When the two adjustment plates 33 correspond to the first slots, the elastic force of the four telescopic springs 35 can push the four limiting arc blocks 36 into the two first slots respectively, so as to limit the two adjustment plates 33, and then the small oil tank melt can be adjusted by the two adjustment plates 33. The two adjusting plates 33 are pushed to move in opposite directions when the two adjusting plates 33 correspond to the second slots, and the two adjusting plates 33 can also be limited to shape the medium-sized fuel tank molten material to form the medium-sized fuel tank blank. When the large-sized fuel tank molten material above the support plate 14 is all drawn into the injection mold 3, the two adjusting plates 33 are pushed to move in opposite directions when the two adjusting plates 33 correspond to the third slots, and the two adjusting plates 33 can be limited to shape the large-sized fuel tank molten material to form the large-sized fuel tank blank. (9) After the fuel tank blank is formed in the injection mold 3, the hydraulic rod 45 can drive the injection baffle 46 to move horizontally, so that the injection baffle 46 is separated from the discharge hole, so that the bottom of the fuel tank blank loses its limit, and the fuel tank blank automatically flows out of the injection mold 3 through the discharge hole due to gravity and falls into the blow mold. The hydraulic rod 45 then drives the injection baffle 46 to move horizontally, so that the injection baffle 46 and the discharge hole are re-fitted, and the telescopic insert 48 is moved to the top between the left mold 53 and the right mold 54. The telescopic insert 48 is driven downward by the electric lifting rod 49 to be inserted into the fuel tank blank. The hair dryer 47 can blow wind into the fuel tank blank through the telescopic insert 48. The blow molding of the fuel tank blank can be achieved by cooperating with the left mold 53 and the right mold 54. (10) When the blow molding mold is needed, first select the designated left mold 53 and right mold 54 according to the size of the oil tank model to be processed. The designated left mold 53 and right mold 54 can be placed on the fixed frame 1 and limited by the two U-shaped frames 52. By rotating the two movable handles 56 clockwise, the two movable screws 55 and the two movable clamping blocks 57 can be respectively driven to rotate downward. The left mold 53 and the right mold 54 can be clamped and fixed with the two U-shaped frames 52. The two electric push rods 51 can respectively drive the two U-shaped frames 52 to move relative to each other, and can respectively drive the left mold 53 and the right mold 54 to move relative to each other. The left mold 53 and the right mold 54 can be precisely fitted together to avoid the left mold 53 and the right mold 54 from being offset during use or when the oil tank blank is being blown, thereby ensuring the effect of the oil tank blank being blown. (11) When the blow-molded oil tank needs to be demolded, the two electric push rods 51 can respectively drive the two U-shaped frames 52 to move in opposite directions, and can respectively drive the left mold 53 and the right mold 54 to move in opposite directions, so that the left mold 53 and the right mold 54 can be separated, and the oil tank can be quickly demolded. When it is necessary to replace the left mold 53 and the right mold 54 of different models, the two movable screws 55 and the two movable clamping blocks 57 can be respectively driven to rotate upward by rotating the two movable handles 56 counterclockwise, so that the two movable clamping blocks 57 are separated from the left mold 53 and the right mold 54 respectively, and the left mold 53 and the right mold 54 can be disassembled, so as to replace the left mold 53 and the right mold 54 of the specified model size according to the model size of the oil tank to be processed; (12) At the same time, when the molten material in the oil tank above the support plate 14 is gradually pumped into the injection mold 3 by the pumping pump 32, the support plate 14 can be driven to move upward by the elastic force of the plurality of compression springs 15 due to the gradual reduction of the molten material in the oil tank. When all the molten material in the oil tank on the support plate 14 is pumped into the injection mold 3, when the buffer block 29 corresponds to the movable block 26 corresponding to the second switch 25, the elastic force of the coil spring 28 can push the buffer block 29, and the movable block 26 can be pushed to move so that the annular spring 27 is in a compressed state. When the movable block 26 moves, it will contact the second switch 25. 5 are fitted together, so that the second switch 25 is started to trigger the electromagnetic valve 22 to open and the material pump 32 to close, and the oil tank melt can continue to be put on the support plate 14, so as to facilitate the quantitative processing of the next oil tank melt. Through this principle, continuous injection blow molding of the oil tank can be realized. At the same time, when the support plate 14 moves upward, it will also drive the power member and the pushing member. The pushing member can drive the two pushing racks 20 to move in opposite directions. The two pushing racks 20 can be moved to the initial position to fit with the two partition plates 21 respectively, so as to facilitate the addition of antioxidants and defoaming agents in the antioxidant box 4 and the defoaming box 5.

[0043] Compared with the prior art, the purpose of facilitating the adjustment of the injection mold 3 of the injection blow molding device is achieved. The injection mold 3 can be adjusted according to the size of the fuel tank to be processed, and injection blow molding can be performed on fuel tanks of different sizes. When it is necessary to process fuel tanks of different sizes, it is not necessary to specify the size of the injection mold 3 for processing, thereby improving the use range of the injection blow molding device and also enhancing the production efficiency of the fuel tank. The technology can automatically control the ratio of the fuel tank raw materials according to the size of the fuel tank to be processed, can accurately control the raw materials of the fuel tank, and can put in the specified fuel tank raw materials according to the size of the fuel tank to be processed, thereby avoiding the phenomenon of raw material mismatch during the molding process of the fuel tank raw materials, preventing the phenomenon of too much or too little raw materials, and avoiding the waste of raw materials caused by too much raw materials during the injection blow processing of the fuel tank raw materials, and the insufficient supply of raw materials for the fuel tank raw materials, resulting in the failure of the fuel tank to completely fill the mold and produce cracks and deformation, thereby meeting the quality of fuel tank production.

[0044] Embodiment 2:

[0045] The embodiment of the present application also discloses a multifunctional injection blow molding method, which is based on the multifunctional injection blow molding device of embodiment 1 and includes the following steps: S1. The oil tank melt is poured into the metering box 2 through six screw feeders and the feed pipe 62. The weight of the falling oil tank melt separates the power plate 40 from the feed pipe 62, the defoaming pipe 6 and the antioxidant pipe 7. The oil tank melt will flow to the connecting funnel 8. The defoaming agent in the defoaming box 5 and the antioxidant in the antioxidant box 4 will also flow into the metering box 2 to mix with the oil tank melt. The stirring element can enhance the mixing effect of the tank melt, the antioxidant and the defoaming agent, reduce the number of bubbles in the oil tank melt and prolong the oxidation induction period. S2. When the falling speed of the defoamer is slower than that of the antioxidant, the power plate 40 will drive the extrusion member to drive the extrusion block 43 on the defoamer box 5 to move downward, squeeze the defoamer at the defoamer tube 6 downward, and increase the pressure speed of the defoamer falling. When the falling speed of the antioxidant is slower than that of the defoamer, the power plate 40 will drive the extrusion member to drive the extrusion block 43 on the antioxidant box 4 to move downward, squeeze the defoamer at the antioxidant tube 7 downward, and increase the pressure speed of the antioxidant falling, so that the feeding ratio pressure of the defoamer and the antioxidant falling is consistent, so as to ensure the effect of feeding the defoamer and the antioxidant at the same time; S3. When the oil tank melt is put on the support plate 14, the solenoid valve 22 is opened to allow the oil tank melt on the connecting funnel 8 to gradually flow onto the support plate 14. When the oil tank melt falls too fast, it means that there is too much defoaming agent and too little antioxidant in the oil tank melt. The falling speed of the oil tank melt can push the wedge block 10 to move so that the two connecting springs 11 are in a stretched state, driving the first control plate 12 and the second control plate 13 to move, so that the liquid gap between the first control plate 12 and the antioxidant tube 7 becomes larger, and the liquid gap between the second control plate 13 and the defoaming tube 6 becomes smaller, thereby increasing the amount of antioxidant put in and reducing the amount of defoaming agent put in. When the speed of the oil tank melt falling is too slow, it means that there is too little defoamer and too much antioxidant in the oil tank melt. The oil tank melt is not enough to push the wedge block 10 due to its slow falling speed. At this time, the two connecting springs 11 are in a relaxed state, which can drive the first control plate 12 and the second control plate 13 to move, so that the liquid gap between the first control plate 12 and the antioxidant tube 7 becomes smaller, and the liquid gap between the second control plate 13 and the defoaming tube 6 becomes larger, which can reduce the amount of antioxidant added and increase the amount of defoamer added. The amount of antioxidant and defoamer added can be kept consistent, so as to ensure that the defoamer and antioxidant optimize the oil tank melt and keep it in the best state; S4. When the oil tank melt gradually flows onto the support plate 14, the weight gradually increases, which will cause the multiple compression springs 15 to be in a compressed state. The support plate 14 will move downward. When it is necessary to process an oil tank of a specified size, the first switch 24 at the specified position can be opened. When the buffer block 29 corresponds to the specified first switch 24, the elastic force of the coil spring 28 can push the buffer block 29, which can push the movable block 26 to move so that the annular spring 27 is in a compressed state. Then, when the movable block 26 moves, it will fit with the specified first switch 24 to start and trigger the electromagnetic valve 22 to close and open the pumping pump 32, so as to achieve the specified amount of oil tank melt. The pumping pump 32 can pump the oil tank melt above the support plate 14 into the injection mold 3; S5. When the support plate 14 moves downward due to the weight of the molten material in the oil tank, it will also drive the power member and the pushing member to drive, and when the two pushing racks 20 can be driven to move relatively, the antioxidant and defoaming agent in the antioxidant box 4 and the defoaming box 5 can be pushed respectively, and the antioxidant and defoaming agent can be put into the quantitative box 2, and a specified amount of antioxidant and defoaming agent can be pushed according to the molten material in the oil tank inside the quantitative box 2; S6. When all the molten oil tank material above the support plate 14 is drawn into the injection mold 3, the two adjustment plates 33 are pushed to move in opposite directions as the molten oil tank material increases and the pressure increases. At the same time, the adjustment member can limit the two adjustment plates 33, and then the molten oil tank material can be shaped by the two adjustment plates 33 to form a tank blank, and small tank blanks, medium tank blanks and large tank blanks can be processed respectively; S7. After the fuel tank blank inside the injection mold 3 is formed, the fuel tank blank can be placed in the blow mold through the blow injection part, and the blow molding of the fuel tank blank can be realized by cooperating with the left mold 53 and the right mold 54. The left mold 53 and the right mold 54 can be separated, closed and disassembled through the splicing parts, so that the fuel tank can be quickly demolded and the left mold 53 and the right mold 54 can be replaced to replace the left mold 53 and the right mold 54 of the specified model and size.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multifunctional injection blow molding device, characterized in that: It comprises a fixed frame (1), an injection mold (3) arranged on the fixed frame (1), a blow mold, a dosing box (2), an anti-oxidation box (4) and a defoaming box (5), a feed pipe (62) arranged on the dosing box (2), and a connecting funnel (8) arranged in the dosing box (2), and six screw feeders are arranged on the outside of the feed pipe (62); The antioxidant box (4) is used to store antioxidants, the defoaming box (5) is used to store defoaming agents, and the feed pipe (62) is used to feed the oil tank melt into the quantitative box (2); The quantitative box (2) is provided with a detection mechanism for detecting the flow rate and weight of the molten material in the oil tank, a control component for controlling the injection speed of the antioxidant and the defoaming agent, and a stirring element for stirring the molten material in the oil tank; The control assembly comprises a power plate (40) movably arranged in the metering box (2), and an extrusion member for extruding and pushing the antioxidant and the defoaming agent is arranged on the power plate (40); The antioxidant box (4) and the defoaming box (5) are both provided with a pushing assembly for pushing the antioxidant and the defoaming agent, the pushing assembly comprising a pushing rack (20) movably arranged inside the antioxidant box (4) and the defoaming box (5) and a pushing member for pushing the two pushing racks (20); The injection mold (3) is provided with an adjustment component for adjusting the internal space, the adjustment component comprising two adjustment plates (33) movably arranged inside the injection mold (3) and an adjustment member for adjusting the two adjustment plates (33); The detection mechanism comprises a flow rate detection component and a weight detection component, the flow rate detection component comprises a wedge-shaped block (10) movably arranged inside the connecting funnel (8), and the wedge-shaped block (10) is provided with a control element for controlling the flow of the antioxidant and the defoaming agent; The weight detection assembly comprises a support plate (14) movably arranged inside the quantitative box (2) and a limiting member for limiting the position of the support plate (14); a power member for driving the pushing member is arranged on the support plate (14); The blow mould comprises a left mould (53) and a right mould (54); a splicing piece for splicing the left mould (53) and the right mould (54) is provided on the fixing frame (1); and a blow moulding piece for blow-injecting a fuel tank blank is provided on the injection mould (3).

2. A multifunctional injection blow molding device according to claim 1, characterized in that: The extrusion member comprises a connecting block (39) hinged on a power plate (40), a fixed block (37) hinged on a quantitative box (2), an extrusion spring (38) fixed on the inner side of the fixed block (37), an anti-oxidation tube (7) fixed on the anti-oxidation box (4), a defoaming tube (6) fixed on the defoaming box (5), an adjustment rod (41) movably arranged on the power plate (40), an extrusion block (43) fixed on the inner sides of the anti-oxidation box (4) and the defoaming box (5), a movable spring (42) fixed on the extrusion block (43), and a power rod (44) rotatably arranged on the inner sides of the anti-oxidation box (4) and the defoaming box (5), wherein the fixed block (37), the extrusion spring (38), the connecting block (39) ), the adjusting rod (41), the squeezing block (43) and the power rod (44) are each two in number, the two power rods (44) are movably fitted with the two adjusting rods (41) respectively, the two power rods (44) are respectively hinged with the two squeezing blocks (43), the movable springs (42) are in two groups, each group of movable springs (42) is four in number, the two groups of movable springs (42) are respectively fixedly connected to the anti-oxidation box (4) and the defoaming box (5), the two squeezing blocks (43) are respectively located directly above the defoaming tube (6) and the anti-oxidation tube (7), and the bottom ends of the defoaming tube (6), the anti-oxidation tube (7) and the feeding tube (62) are all movably fitted with the power plate (40).

3. A multifunctional injection blow molding device according to claim 2, characterized in that: The control component comprises a connecting rod (9) fixed to the wedge block (10), a second control plate (13) fixed to the wedge block (10), a first control plate (12) fixed to the connecting rod (9), and two connecting springs (11) fixed to the first control plate (12), the two connecting springs (11) being fixedly connected to the connecting funnel (8), and a liquid gap being provided between the first control plate (12) and the anti-oxidation tube (7) and between the second control plate (13) and the defoaming tube (6).

4. A multifunctional injection blow molding device according to claim 3, characterized in that: The limiting member comprises a plurality of compression springs (15) fixed on the support plate (14), a coil spring (28) and a telescopic cover (30), a buffer block (29) fixed on the coil spring (28), a solenoid valve (22) fixed on the connecting funnel (8), a connecting frame (23) fixed on the quantitative box (2), three first switches (24) and a second switch (25) fixed on the connecting frame (23), four movable blocks (26) movably arranged on the quantitative box (2), annular springs (27) respectively fixed on the outside of the four movable blocks (26), and a connecting pipe (31) fixed on the quantitative box (2). ) and a material extraction pump (32) fixed on the connecting pipe (31), the telescopic cover (30) and the injection mold (3) are both connected to the connecting pipe (31), the telescopic cover (30) is connected to the support plate (14), the four movable blocks (26) are selectively fitted with the buffer block (29), the four movable blocks (26) are respectively movably fitted with the three first switches (24) and the second switches (25), the three first switches (24) and the second switches (25) are all electrically connected to the material extraction pump (32) and the electromagnetic valve (22), and the four annular springs (27) are all fixedly connected to the quantitative box (2).

5. A multifunctional injection blow molding device according to claim 4, characterized in that: The pushing member comprises a spiral push plate (19) fixed on a pushing frame (20), a spiral rod (18) rotatably arranged on the anti-oxidation box (4) and the defoaming box (5), and a partition plate (21) fixed on the inner side of the anti-oxidation box (4) and the defoaming box (5), the spiral push plate (19), the spiral rod (18) and the partition plate (21) are each two in number, the two spiral rods (18) are respectively threadedly connected to the two spiral push plates (19), and the two spiral push plates (19) are respectively arranged on the two pushing frames (20); The power member comprises two fixed racks (16) fixed on the support plate (14) and movable gears (17) respectively fixed on two spiral rods (18); the two fixed racks (16) are respectively meshed with the two movable gears (17).

6. A multifunctional injection blow molding device according to claim 5, characterized in that: The adjusting member comprises a plurality of buffer springs (34) and telescopic springs (35) fixed on two adjusting plates (33) and a limiting arc block (36) fixed on the telescopic springs (35); the plurality of buffer springs (34) are evenly distributed on the two adjusting plates (33); the plurality of buffer springs (34) are fixed on the inner side of the injection mold (3); a partition frame (50) is provided on the inner side of the injection mold (3); an arc-shaped slot is provided on the inner side of the injection mold (3); the number of the telescopic springs (35) and the limiting arc block (36) is two groups; the number of the telescopic springs (35) and the limiting arc block (36) in each group is two; the number of the arc-shaped slots is four groups; the number of the arc-shaped slots in each group is three; the three arc-shaped slots are selectively engaged with the limiting arc block (36); and the outlet of the connecting pipe (31) is located above between the two adjusting plates (33).

7. A multifunctional injection blow molding device according to claim 6, characterized in that: The blow-injection part comprises a hydraulic rod (45) fixed on the injection mold (3); an injection baffle (46) is arranged at the output end of the hydraulic rod (45); a blower (47) is arranged at the bottom of the injection baffle (46); a telescopic plug (48) is arranged at the air outlet of the blower (47); an electric lifting rod (49) is arranged at the bottom of the injection baffle (46); the output end of the electric lifting rod (49) is fixedly connected to the telescopic plug (48); a discharge hole is opened at the bottom of the injection mold (3); and the injection baffle (46) is movably fitted with the discharge hole.

8. A multifunctional injection blow molding device according to claim 7, characterized in that: The splicing component comprises two electric push rods (51) fixed on a fixed frame (1); a U-shaped frame (52) is provided at opposite ends of the two electric push rods (51); the two U-shaped frames (52) are movably connected to a left mold (53) and a right mold (54) respectively; the left mold (53) and the right mold (54) are movably fitted; the inner sides of the two U-shaped frames (52) are threadedly connected with movable screws (55); the top ends of the two movable screws (55) are provided with movable handles (56); the bottom ends of the two movable screws (55) are provided with movable clamping blocks (57); the two movable clamping blocks (57) are movably connected to the left mold (53) and the right mold (54) respectively.

9. A multifunctional injection blow molding device according to claim 7, characterized in that: The stirring member comprises a plurality of stirring blades (61) rotatably arranged in the quantitative box (2) and a stirring shaft (60), and a motor (59) fixed to the quantitative box (2); the plurality of stirring blades (61) are evenly fixed to the outside of the stirring shaft (60); and the stirring shaft (60) is fixedly connected to an output shaft of the motor (59).

10. A multifunctional injection blow molding method, based on a multifunctional injection blow molding device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. The molten material in the oil tank is poured into the metering box (2) through six screw feeders and a feed pipe (62). The weight of the molten material in the oil tank causes the power plate (40) to separate from the feed pipe (62), the defoaming pipe (6) and the antioxidant pipe (7). The molten material in the oil tank flows to the connecting funnel (8). The defoaming agent in the defoaming box (5) and the antioxidant in the antioxidant box (4) also flow into the metering box (2) to mix with the molten material in the oil tank. The stirring element can enhance the mixing effect of the molten material, the antioxidant and the defoaming agent, reduce the number of bubbles in the molten material in the oil tank and prolong the oxidation induction period. S2. When the falling speed of the defoamer is slower than that of the antioxidant, the power plate (40) drives the extrusion member to drive the extrusion block (43) on the defoamer box (5) to move downward, to squeeze the defoamer at the defoamer tube (6) downward, and to increase the pressure speed of the defoamer falling. When the falling speed of the antioxidant is slower than that of the defoamer, the power plate (40) drives the extrusion member to drive the extrusion block (43) on the antioxidant box (4) to move downward, to squeeze the defoamer at the antioxidant tube (7) downward, and to increase the pressure speed of the antioxidant falling, so that the feeding ratio pressure of the defoamer and the antioxidant falling is consistent, so as to ensure the effect of feeding the defoamer and the antioxidant at the same time. S3. When the oil tank melt is placed on the support plate (14), the solenoid valve (22) is opened to allow the oil tank melt on the connecting funnel (8) to gradually flow onto the support plate (14). When the oil tank melt falls too fast, it means that there is too much defoaming agent and too little antioxidant in the oil tank melt. The falling speed of the oil tank melt can push the wedge block (10) to move so that the two connecting springs (11) are in a stretched state, driving the first control plate (12) and the second control plate (13) to move, so that the liquid gap between the first control plate (12) and the antioxidant tube (7) becomes larger, and the liquid gap between the second control plate (13) and the defoaming tube (6) becomes smaller, thereby increasing the amount of antioxidant placed and reducing the amount of defoaming agent. When the speed at which the molten material in the oil tank falls is too slow, it means that there is too little defoaming agent and too much antioxidant in the molten material in the oil tank. The molten material in the oil tank falls slowly and is not enough to push the wedge block (10). At this time, the two connecting springs (11) are in a relaxed state, which can drive the first control plate (12) and the second control plate (13) to move, so that the liquid gap between the first control plate (12) and the antioxidant tube (7) becomes smaller, and the liquid gap between the second control plate (13) and the defoaming tube (6) becomes larger, which can reduce the amount of antioxidant added and increase the amount of defoaming agent added. The amounts of antioxidant and defoaming agent added can be kept consistent, so as to ensure that the defoaming agent and antioxidant are optimized for the molten material in the oil tank and maintained in the best state; S4. When the oil tank molten material gradually flows onto the support plate (14), the weight gradually increases, causing the plurality of compression springs (15) to be in a compressed state, and the support plate (14) to move downward. When a specified size of oil tank needs to be processed, the first switch (24) at the specified position can be opened. When the buffer block (29) corresponds to the specified first switch (24), the elastic force of the coil spring (28) can push the buffer block (29), which can push the movable block (26) to move so that the annular spring (27) is in a compressed state. Then, when the movable block (26) moves, it will fit with the specified first switch (24) to start and trigger the electromagnetic valve (22) to close and the pumping pump (32) to open, so as to achieve the specified amount of oil tank molten material. The pumping pump (32) can pump the oil tank molten material above the support plate (14) into the injection mold (3); S5. When the support plate (14) moves downward due to the weight of the molten material in the oil tank, it will also drive the power member and the pushing member to drive, and when the two pushing racks (20) can be driven to move relative to each other, the antioxidant and defoaming agent in the antioxidant box (4) and the defoaming box (5) can be pushed respectively, and the antioxidant and defoaming agent can be put into the quantitative box (2), and a specified amount of antioxidant and defoaming agent can be pushed according to the molten material in the oil tank inside the quantitative box (2); S6. When all the molten oil tank material above the support plate (14) is drawn into the injection mold (3), the two adjusting plates (33) are pushed to move in opposite directions as the molten oil tank material increases and the pressure increases. At the same time, the adjusting member can limit the two adjusting plates (33), and then the molten oil tank material can be shaped by the two adjusting plates (33) to form a fuel tank blank. Small fuel tank blanks, medium fuel tank blanks and large fuel tank blanks can be processed respectively. S7. After the fuel tank blank inside the injection mold (3) is formed, the fuel tank blank can be placed in the blow mold through the blow injection part, and the fuel tank blank can be blow-molded by cooperating with the left mold (53) and the right mold (54). The left mold (53) and the right mold (54) can be separated and closed and disassembled through the splicing parts, so that the fuel tank can be quickly demolded. At the same time, the left mold (53) and the right mold (54) can be replaced to replace the left mold (53) and the right mold (54) of the specified model and size.

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