Plastic container injection molding equipment

Abstract

The invention relates to the technical field of injection molding, in particular to plastic container injection molding equipment which comprises a rack, a middle plate is fixed to the inner side of the rack, a bottom plate is arranged at the top of the middle plate, two hydraulic cylinders are arranged at the bottom of the bottom plate, a heater is fixed to the top of the bottom plate, and an injection molding tank is fixed to the inner side of the heater. A sealing cover is fixed to the bottom of the output end of the injection molding tank, a bottom box is arranged on the outer side of the sealing cover, oil passing pieces are arranged on the two sides of the sealing cover, a middle column is fixed to the top of the bottom wall of the bottom box, a transmission piece is arranged on the outer side of the middle column, a motor is arranged at the bottom of the transmission piece, a mold is slidably connected to the outer side of the transmission piece, and a loosening piece is arranged on the top of the middle column. The hydraulic cylinder, the sealing cover and the bottom box are adopted, the pressure intensity of the inner sides of the sealing cover and the bottom box can be reduced under the sealing condition, bubbles are separated out, and compared with the prior art, internal defects can be reduced, the internal structure of a product is compact and uniform, and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding, in particular to a plastic container injection molding device. Background Art

[0002] Recycling and injection molding of plastic waste is a very meaningful environmental protection and resource regeneration technology. In this process, first of all, the collected plastic waste is the basic raw material of the whole process. These wastes come from a wide range of sources, including discarded plastic bottles and packaging materials in daily life, and scraps from industrial production. After they are collected, they are sorted and screened to remove impurities and different types of non-target plastics to ensure the relative purity of the raw materials, and then made into reusable plastic particles, which are then made into the required plastic containers using injection molding equipment.

[0003] Plastic container injection molding equipment plays a vital role in the production process of plastic containers. Its main function is to efficiently and accurately convert plastic raw materials into plastic containers of various shapes and specifications. In terms of raw material processing, it can accurately control the melting process of plastic particles. Through a precise heating system, the plastic raw materials are evenly heated in the barrel to reach a suitable molten state, which ensures that the plastic melt has good fluidity and lays the foundation for subsequent molding in the mold. In the molding stage, the injection system of the injection molding equipment can inject the molten plastic into the carefully designed mold cavity with sufficient pressure and speed. The mold is the key part of molding. The equipment can ensure that the plastic melt fills every detail of the mold completely and tightly, thereby accurately replicating the shape of the mold and manufacturing plastic containers that meet the design requirements. Moreover, the equipment can effectively control the cooling process to ensure that the plastic is cooled and solidified under appropriate temperature and time conditions, so that the plastic container can maintain good shape stability and dimensional accuracy.

[0004] A Chinese patent with publication number CN118238342B discloses a plastic container injection molding device, which is designed to be equipped with an injection molding component, an airflow component and a lifting component. Through this design, the injection plastic can be filled in multiple times, and the fluidity of the injection plastic in the cavity can be improved in the middle of each two fillings of the injection plastic, thereby improving the filling uniformity and effect of the injection plastic in the cavity. The multiple fillings of the injection plastic can ensure the filling effect of each injection plastic, thereby improving the quality of the final product. By controlling the lifting and lowering of the lifting component, the transmission conditions between the various structures can be changed, and the final effect can be changed. After the injection plastic is filled, the injection plastic can be quickly cooled and molded, thereby improving the application effect of the equipment.

[0005] During the injection molding process, high temperature vaporizes water, and the wrapping of the plastic melt prevents the water vapor from escaping in time. Or when the injection speed is too fast, the plastic melt flows at high speed in the mold cavity and will draw in air. The drawn-in air forms bubbles after the melt cools and solidifies. In addition, too low pressure may cause incomplete filling of the plastic melt, and the air in the cavity cannot be completely squeezed out; while too high pressure may cause turbulence in the plastic melt in the cavity, increasing the probability of air being drawn in.

[0006] The prior art does not consider how to expel bubbles, and it is difficult to expel bubbles from the cooled plastic melt. If the bubbles are not expelled after injection molding, the bubbles will cause voids inside the injection molded part, weakening the structural strength, easily leading to cracks and deformation, affecting product quality and safety. In terms of appearance, bubbles will cause bumps, pits and flaws, destroying the appearance and smoothness. At the same time, bubbles will cause uneven stress distribution when the product cools and shrinks, resulting in dimensional deviations, affecting assembly. A large number of bubbles will increase the scrap rate and increase costs, and later remediation will be both costly and inefficient.

[0007] Therefore, the present invention provides a plastic container injection molding device to solve the problem of how to remove bubbles from the plastic melt after injection molding and low production efficiency. Summary of the invention

[0008] Aiming at the problems in the prior art that it is difficult to remove bubbles from the plastic melt after injection molding and the production efficiency is low, a plastic container injection molding equipment is designed.

[0009] The technical solution adopted by the present invention to solve the technical problem is: a plastic container injection molding equipment, including a frame, a middle plate is fixed on the inner side of the frame, a bottom plate is arranged on the top of the middle plate, two hydraulic cylinders are arranged at the bottom of the bottom plate, a heater is fixed on the top of the bottom plate, an injection molding tank is fixed on the inner side of the heater, a sealing cover is fixed on the bottom of the output end of the injection molding tank, a bottom box is arranged on the outer side of the sealing cover, oil-passing parts are arranged on both sides of the sealing cover, closing parts are arranged on the inner walls of both sides of the sealing cover, a middle column is fixed on the top of the bottom wall of the bottom box, and a middle column is fixed on the bottom wall of the bottom box. A transmission part is arranged on the outside of the column, a motor is arranged on the bottom of the transmission part, a mold is slidably connected to the outside of the transmission part, a loosening part is arranged on the top of the middle column, and a cylinder is arranged on the top of the loosening part; an oil-passing part is equipped to divert the heat-conducting oil on the inner side of the movable sleeve arranged at the bottom of the heater to the inner side of the cover; a closing part is equipped to close the oil-passing part through a closing tube arranged inside the cover and a card groove arranged on the inner side of the bottom box; and the loosening part is equipped to loosen through a clearing plate arranged on the inner side of the mold.

[0010] Specifically, two link plates are fixed to the bottom of the base plate, the bottoms of the two link plates are fixedly connected to the tops of the output ends of the two hydraulic cylinders, the bottoms of the two hydraulic cylinders are fixed to the ground, an angle plate is fixed to the bottom of the top wall of the frame, and the cylinder is fixed to the inner side of the angle plate.

[0011] Specifically, the transmission member is equipped to transmit the power of the motor to the mold; the transmission member includes a clamping column, which is rotatably mounted on the outside of the middle column, a large gear is fixed to the outside of the clamping column, and the large gear is located on the inside of the mold, a small gear is fixed to the outside of the output end of the motor, the small gear is located on the inside of the mold, and the large gear and the small gear are meshed.

[0012] Specifically, the movable sleeve is fixed to the bottom of the oil outlet of the heater.

[0013] Specifically, the oil-passing part also includes two square boxes, which are fixed on both sides of the base box. The other end of the square box close to the heater is fixedly connected to the other end of the movable sleeve. The base box is fixed with outer holes on both sides of the square box. The cover and the base box are provided with inner holes on both sides close to the outer holes. The outer hole, the inner hole, the square box and the inner side of the movable sleeve are connected.

[0014] Specifically, the closing piece also includes an outer groove and a circular groove. The outer groove is opened on both sides of the inner hole opened in the sealing cover, and the outer groove is connected to the inner side of the inner hole. The top wall of the circular groove is opened with two circular grooves. A limiting rod is fixed to the top of the bottom wall of each circular groove, and the bottoms of the two limiting rods are fixed to the top of the bottom wall of the outer groove. The closing block is slidably connected to the outside of the two limiting rods. The closing block is located on the inner side of the outer groove. Two springs are fixed to the top of the closing block. The two springs are respectively located on the outside of the two limiting rods. The tops of the two springs are fixed to the bottom of the top wall of the circular groove. The inner walls on both sides of the bottom box where the square box is fixed are opened with card slots, and the tops of the card slots pass through the top of the bottom box.

[0015] Specifically, the loosening part also includes a top plate, which is fixed to the bottom of the output end of the cylinder. A threaded rod is rotatably installed through the bottom of the top plate. A cross plate is fixed to the outside of the other end of the threaded rod. The cross plate is rotatably connected to the inner side of the cover. The cross plate is clamped to the inner side of the top of the center column. A bracket is installed on the outer side of the threaded rod through threads, and the clearing plate is fixed to the bottom of the bracket.

[0016] Specifically, a sealing plate is fixed to the top of the bottom wall of the bottom box, the inner side of the sealing plate is fitted with the outer side of the mold, the top of the sealing plate is aligned with the top of the mold, and the outer side of the sealing plate is fitted with the inner side of the cover.

[0017] The beneficial effects of the present invention are as follows:

[0018] (1) The plastic container injection molding equipment described in the present invention adopts a hydraulic cylinder, a cover and a bottom box. Under a sealed condition, it can reduce the pressure inside the cover and the bottom box to precipitate bubbles. Compared with the prior art, it can reduce internal defects, make the internal structure of the product tight and uniform, enhance the structural strength, and extend the service life. At the same time, it can also improve the appearance, avoid defects such as bulges and pits caused by bubbles, optimize physical properties such as density, hardness, and toughness, reduce the scrap rate, save costs, and improve production efficiency. The effect is more significant in large-scale production.

[0019] (2) The plastic container injection molding equipment described in the present invention adopts a movable sleeve and an oil-passing piece, which can keep the plastic melt warm during injection molding to prevent solidification that makes it difficult for bubbles to precipitate, and can also seal the cover and the bottom box.

[0020] (3) The plastic container injection molding equipment described in the present invention can stir the plastic melt after the injection molding is completed through the loosening parts, the sealing cover and the cylinder, as an auxiliary to accelerate the speed of the air bubble discharge inside the plastic melt. The loosening parts, the sealing cover and the motor can disperse the plastic melt through the clearing plate to avoid the accumulation of the plastic melt, and then cooperate with the injection tank to perform injection molding on the inside of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and implementation modes.

[0022] Figure 1 is a stereogram of the present invention;

[0023] Figure 2 is a cross-sectional schematic diagram of the present invention;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the corner plate of the present invention;

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the heater of the present invention;

[0026] Figure 5 It is a three-dimensional structural schematic diagram of the bottom box of the present invention;

[0027] Figure 6 It is a cross-sectional schematic diagram of the bottom box of the present invention;

[0028] Figure 7 It is a three-dimensional structural schematic diagram of the cover of the present invention;

[0029] Figure 8 It is a three-dimensional structural schematic diagram of the square box of the present invention;

[0030] Fig. 9 It is a three-dimensional structural schematic diagram of the card slot of the present invention;

[0031] Fig.10 It is a three-dimensional structural schematic diagram of the loose member of the present invention;

[0032] Fig.11 It is a three-dimensional structural schematic diagram of the closing block of the present invention;

[0033] Fig.12 is a schematic cross-sectional view of a cover of the present invention;

[0034] Fig.13 It is a three-dimensional structural schematic diagram of the sealing plate of the present invention;

[0035] Fig.14 It is a three-dimensional structural schematic diagram of the mold of the present invention;

[0036] Fig.15 yes Fig.12 Enlarged view of point A.

[0037] In the figure: 1, frame; 2, middle plate; 3, bottom plate; 4, hydraulic cylinder; 5, heater; 6, cover; 7, bottom box; 8, cylinder; 10, link plate; 11, angle plate; 12, movable sleeve; 13, oil-passing part; 131, square box; 132, inner hole; 133, outer hole; 14, closing part; 141, outer groove; 142, limiting rod; 143, circular groove; 144, closing block; 145, clamping groove; 15, loose part; 151, top plate; 152, threaded rod; 153, cross plate; 154, bracket; 155, dredging plate; 16, sealing plate; 17, motor; 18, transmission part; 181, clamping column; 182, large gear; 183, small gear; 19, mold; 21, middle column; 22, injection tank. DETAILED DESCRIPTION

[0038] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0039] Example: Figures 1 to 15As shown, a plastic container injection molding device according to the present invention comprises a frame 1, a middle plate 2 is fixed on the inner side of the frame 1, a bottom plate 3 is arranged on the top of the middle plate 2, two hydraulic cylinders 4 are arranged on the bottom of the bottom plate 3, a heater 5 is fixed on the top of the bottom plate 3, an injection tank 22 is fixed on the inner side of the heater 5, a cover 6 is fixed on the bottom of the output end of the injection tank 22, a bottom box 7 is arranged on the outer side of the cover 6, oil passing parts 13 are arranged on both sides of the cover 6, closing parts 14 are arranged on the inner walls of both sides of the cover 6, a middle column 21 is fixed on the top of the bottom wall of the bottom box 7, and a transmission part 18 is arranged on the outer side of the middle column 21 A motor 17 is provided at the bottom of the transmission member 18, a mold 19 is slidably connected to the outer side of the transmission member 18, a loosening member 15 is provided at the top of the middle column 21, and a cylinder 8 is provided at the top of the loosening member 15; an oil-passing member 13 is equipped to divert the heat-conducting oil inside the movable sleeve 12 provided at the bottom of the heater 5 to the inside of the cover 6; a closing member 14 is equipped to close the oil-passing member 13 through a closing tube provided inside the cover 6 and a card slot 145 provided on the inner side of the bottom box 7; the loosening member 15 is equipped to loosen through a dredging plate 155 provided on the inner side of the mold 19.

[0040] In this embodiment, after the injection molding is completed, the staff controls the injection molding tank 22 and the motor 17 to stop working, controls the two hydraulic cylinders 4 to extend, and the output ends of the two hydraulic cylinders 4 drive the bottom plate 3 to move to the side close to the top of the frame 1 through the two link plates 10. When the top of the bottom plate 3 contacts the bottom of the top plate 151, the two hydraulic cylinders 4 are closed. At this time, the bottom of the cover 6 is located at the bottom of the outer hole 133. The bottom plate 3 drives the cover 6, the heater 5 and the injection molding tank 22 to move to the side close to the top of the frame 1. When the cover 6 moves toward the top of the frame 1, the pressure of the closed space formed by the cover 6 and the inner side of the bottom box 7 is reduced, and then the bubbles inside the plastic melt can be precipitated out of the plastic melt by reducing the pressure, thereby increasing the effect of injection molding.

[0041] Furthermore, two link plates 10 are fixed to the bottom of the base plate 3, the bottoms of the two link plates 10 are fixedly connected to the tops of the output ends of the two hydraulic cylinders 4, the bottoms of the two hydraulic cylinders 4 are fixed to the ground, and an angle plate 11 is fixed to the bottom of the top wall of the frame 1, and the cylinder 8 is fixed to the inner side of the angle plate 11.

[0042] In this embodiment, after the bubbles inside the plastic melt are discharged, the staff controls the double gear pump to stop working, controls the two hydraulic cylinders 4 to extend, and controls the cylinder 8 to contract, and keeps the extension speed of the two hydraulic cylinders 4 consistent with the contraction speed of the cylinder 8. The two hydraulic cylinders 4 drive the cover 6, the heater 5 and the injection tank 22 to move to the side close to the top of the frame 1, and the cylinder 8 drives the loose parts 15 to move to the side close to the top of the frame 1. During this process, the cross plate 153 moves out from the inner side of the top of the middle column 21 and follows the threaded rod 152 to move to the side close to the top of the frame 1, completely releasing the restriction on the bottom box 7, and preparing for the cooling and unloading of the melted plastic particles made of recycled waste plastics.

[0043] Furthermore, the transmission member 18 is equipped to transmit the power of the motor 17 to the mold 19; the transmission member 18 includes a clamping column 181, which is rotatably mounted on the outer side of the middle column 21, and a large gear 182 is fixed to the outer side of the clamping column 181, and the large gear 182 is located on the inner side of the mold 19, and a small gear 183 is fixed to the outer side of the output end of the motor 17, and the small gear 183 is located on the inner side of the mold 19, and the large gear 182 and the small gear 183 are meshed.

[0044] In this embodiment, the staff controls the motor 17 to rotate, the output end of the motor 17 drives the small gear 183 to rotate, the small gear 183 drives the large gear 182 to rotate, the large gear 182 drives the clamping column 181 to rotate, the clamping column 181 drives the mold 19 to rotate, and at the same time, the clearing plate 155 can disperse the plastic melt to avoid the accumulation of the plastic melt, and then cooperate with the injection tank 22 to inject the inner side of the mold 19.

[0045] Furthermore, the movable sleeve 12 is fixed to the bottom of the oil outlet of the heater 5 .

[0046] Furthermore, the oil-passing part 13 also includes two square boxes 131, which are fixed on both sides of the bottom box 7. The other end of the square box 131 close to the heater 5 is fixedly connected to the other end of the movable sleeve 12. Solenoid valves are fixed on the inner sides of the ends of the two square boxes 131 that are away from each other. External holes 133 are formed through the two sides of the bottom box 7 where the square boxes 131 are fixed. Internal holes 132 are formed through the two sides of the cover 6 and the bottom box 7 that are close to the two sides of the external holes 133. The external holes 133, the inner holes 132, the square boxes 131 and the inner side of the movable sleeve 12 are connected.

[0047] In this embodiment, the number of closure members 14 is the same as the number of inner holes 132 and outer holes 133. Before using this device, the staff needs to connect one of the inlets of the double gear pump (a double gear pump usually has two independent gear pump structures sharing a housing, each gear pump has its own inlet, and the outlet can be combined into one, forming a form of two inlets and one outlet. This pump can pump out the oil from the two inlets through one outlet, and each of its inlet and outlet can usually work independently) to an external heat transfer oil source through a pipeline, connect the other inlet of the double gear pump to the square box 131 through a pipeline, connect the outlet of the double gear pump to the oil inlet of the heater 5 through a pipeline, first close the inlet of the double gear pump connected to the square box 131, and start the double gear pump to pump the heat transfer oil into and fill the heater 5. The two square boxes 131, the inner side of the movable sleeve 12, and the space from the top of the bottom wall of the bottom box 7 to the bottom of the sealing plate 16, then open the inlet connected to the double gear pump and the square box 131 while closing the inlet connected to the external heat transfer oil source, thereby realizing the circulation of the heat transfer oil, and then start the heater 5, the heater 5 heats the heat transfer oil inside it, cooperates with the circulation of the heat transfer oil, and heats the mold 19 and the injection tank 22. When the temperature of the heat transfer oil rises to the required working temperature, the heater 5 is controlled to keep the heat transfer oil warm, and at the same time, plastic particles made of recycled waste plastics are injected into the inside of the injection tank 22. When the plastic particles made of recycled waste plastics are melted, the injection tank 22 is controlled to inject the plastic melt into the inside of the mold 19 through the outlet.

[0048] Furthermore, the closing member 14 also includes an outer groove 141 and a circular groove 143. The outer groove 141 is opened on both sides of the inner hole 132 opened with the sealing cover 6, and the outer groove 141 is connected to the inner side of the inner hole 132. The top wall of the circular groove 143 is opened with two circular grooves 143. A limiting rod 142 is fixed to the top of the bottom wall of each circular groove 143. The bottoms of the two limiting rods 142 are fixed to the top of the bottom wall of the outer groove 141. A closing block 144 is slidably connected to the outside of the two limiting rods 142. The closing block 144 is located on the inner side of the outer groove 141. Two springs are fixed to the top of the closing block 144. The two springs are respectively located on the outside of the two limiting rods 142. The tops of the two springs are fixed to the bottom of the top wall of the circular groove 143. The inner walls on both sides of the bottom box 7 where the square box 131 is fixed are opened with card grooves 145, and the tops of the card grooves 145 pass through the top of the bottom box 7.

[0049] In this embodiment, the two hydraulic cylinders 4 are controlled to extend, and the output ends of the two hydraulic cylinders 4 drive the bottom plate 3 to move toward the side close to the top of the frame 1 through the two link plates 10. While the bottom plate 3 drives the cover 6 to move, the closing block 144 moves along the outer side of the two limiting rods 142 toward the side close to the inner hole 132 under the action of elastic force, gradually closing the inner hole 132, and then separating the outer hole 133 from the inner hole 132, so that a closed space is formed inside the cover 6 and the bottom box 7.

[0050] Furthermore, the loosening member 15 also includes a top plate 151, which is fixed to the bottom of the output end of the cylinder 8. A threaded rod 152 is rotatably installed through the bottom of the top plate 151, and a cross plate 153 is fixed to the outside of the other end of the threaded rod 152. The cross plate 153 is rotatably connected to the inner side of the cover 6, and the cross plate 153 is clamped to the inner side of the top of the middle column 21. A bracket 154 is threadedly installed on the outer side of the threaded rod 152, and a clearing plate 155 is fixed to the bottom of the bracket 154.

[0051] Furthermore, a sealing plate 16 is fixed to the top of the bottom wall of the bottom box 7 , the inner side of the sealing plate 16 is fitted with the outer side of the mold 19 , the top of the sealing plate 16 is aligned with the top of the mold 19 , and the outer side of the sealing plate 16 is fitted with the inner side of the cover 6 .

[0052] In this embodiment, the cover 6 drives the bracket 154 to move toward the side away from the mold 19. The bracket 154 drives the clearing plate 155 to rotate by meshing with the threaded rod 152, and at the same time drives the clearing plate 155 to move toward the side close to the top of the frame 1, so as to stir the plastic melt, thereby assisting in accelerating the discharge of bubbles inside the plastic melt.

[0053] Working principle: before using this device, the staff needs to use a double gear pump, first close the inlet connecting the double gear pump and the square box 131, start the double gear pump to pump the heat transfer oil into and fill the heater 5, the two square boxes 131, the inner side of the movable sleeve 12, and the space from the top of the bottom wall of the bottom box 7 to the bottom of the sealing plate 16, and then open the inlet connecting the double gear pump and the square box 131 while closing the inlet connected to the external heat transfer oil source, thereby realizing the circulation of the heat transfer oil; then start the heater 5, the heater 5 heats the heat transfer oil inside it, cooperates with the circulation of the heat transfer oil, heats the mold 19 and the injection molding tank 22, when the temperature of the heat transfer oil rises to the required working temperature, control the heater 5 to keep the heat transfer oil warm, and start to inject plastic particles made of recycled waste plastics into the inner side of the injection molding tank 22, the injection molding tank 22 injects the plastic particles made of recycled waste plastics into the inner side of the mold 19 through the outlet, while controlling the motor 17 to rotate, cooperates with the injection molding tank 22 to perform injection molding on the inner side of the mold 19;

[0054] After the injection molding is completed, the staff controls the injection molding tank 22 and the motor 17 to stop working, controls the double gear pump to stop working, controls the two hydraulic cylinders 4 to extend, and moves the cover 6 to the top of the frame 1 while reducing the pressure of the closed space formed by the cover 6 and the inner side of the bottom box 7, so that the bubbles inside the plastic melt are precipitated out of the plastic melt. At the same time, the bracket 154 drives the dredging plate 155 to rotate and drives the dredging plate 155 to move to the side close to the top of the frame 1 to stir the plastic melt. When the bubbles inside the plastic melt are discharged, the two hydraulic cylinders 4 are controlled to extend, the double gear pump is turned on, and the cylinder 8 is controlled to contract, completely releasing the restriction on the bottom box 7, so as to prepare for the unloading and subsequent cooling of the melted plastic particles and mold 19 made of recycled waste plastics.

[0055] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0056] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A plastic container injection molding device, comprising a frame (1), a middle plate (2) being fixed inside the frame (1), characterized in that: A bottom plate (3) is arranged on the top of the middle plate (2), two hydraulic cylinders (4) are arranged on the bottom of the bottom plate (3), a heater (5) is fixed on the top of the bottom plate (3), an injection molding tank (22) is fixed on the inner side of the heater (5), a cover (6) is fixed on the bottom of the output end of the injection molding tank (22), a bottom box (7) is arranged on the outer side of the cover (6), oil-passing parts (13) are arranged on both sides of the cover (6), and the cover (6) is provided with a plurality of hydraulic cylinders (4). The inner walls on both sides of the bottom box (6) are provided with closing members (14), a middle column (21) is fixed to the top of the bottom wall of the bottom box (7), a transmission member (18) is provided on the outside of the middle column (21), a motor (17) is provided at the bottom of the transmission member (18), a mold (19) is slidably connected to the outside of the transmission member (18), a loose member (15) is provided on the top of the middle column (21), and a cylinder (8) is provided on the top of the loose member (15); An oil-passing member (13) is configured to divert the heat-conducting oil on the inner side of the movable sleeve (12) disposed at the bottom of the heater (5) to the inner side of the sealing cover (6); A sealing member (14) is assembled to seal the oil passage member (13) by means of a sealing tube arranged inside the sealing cover (6) and a clamping groove (145) arranged inside the bottom box (7); The loosening member (15) is configured to be loosened by a loosening plate (155) arranged inside the mold (19).

2. The plastic container injection molding equipment according to claim 1, characterized in that: Two link plates (10) are fixed at the bottom of the base plate (3), the bottoms of the two link plates (10) are fixedly connected to the tops of the output ends of the two hydraulic cylinders (4), the bottoms of the two hydraulic cylinders (4) are fixed to the ground, an angle plate (11) is fixed at the bottom of the top wall of the frame (1), and the cylinder (8) is fixed to the inner side of the angle plate (11).

3. The plastic container injection molding equipment according to claim 1, characterized in that: The transmission member (18) is configured to transmit power from the motor (17) to the mold (19); The transmission member (18) comprises a clamping column (181), the clamping column (181) is rotatably mounted on the outer side of the middle column (21), a large gear (182) is fixed on the outer side of the clamping column (181), and the large gear (182) is located on the inner side of the mold (19), a small gear (183) is fixed on the outer side of the output end of the motor (17), and the small gear (183) is located on the inner side of the mold (19), and the large gear (182) and the small gear (183) are meshed.

4. The plastic container injection molding equipment according to claim 1, characterized in that: The movable sleeve (12) is fixed to the bottom of the oil outlet of the heater (5).

5. The plastic container injection molding equipment according to claim 4, characterized in that: The oil-passing member (13) further comprises two square boxes (131), the two square boxes (131) being fixed on two sides of the bottom box (7), the other end of the square box (131) close to the heater (5) being fixedly connected to the other end of the movable sleeve (12), the two sides of the bottom box (7) on which the square box (131) is fixed having outer holes (133) extending therethrough, the two sides of the cover (6) and the bottom box (7) close to the two sides of the outer holes (133) extending therethrough have inner holes (132), and the outer holes (133), the inner holes (132), the square box (131) and the inner side of the movable sleeve (12) are in communication with each other.

6. The plastic container injection molding equipment according to claim 5, characterized in that: The closure member (14) further comprises an outer groove (141) and a circular groove (143); the outer groove (141) is provided with two sides of the inner hole (132) provided on the sealing cover (6); the outer groove (141) and the inner side of the inner hole (132) are communicated; the top wall of the circular groove (143) is provided with two circular grooves (143); a limiting rod (142) is fixed to the top of the bottom wall of each circular groove (143); the bottoms of the two limiting rods (142) are fixed to the top of the bottom wall of the outer groove (141); the closure block (143) 144) is slidably connected to the outside of the two limiting rods (142), the closing block (144) is located on the inside of the outer groove (141), two springs are fixed on the top of the closing block (144), the two springs are respectively located on the outside of the two limiting rods (142), the tops of the two springs are fixed to the bottom of the top wall of the circular groove (143), and the inner walls on both sides of the bottom box (7) to which the square box (131) is fixed are provided with card slots (145), and the top of the card slots (145) passes through the top of the bottom box (7).

7. The plastic container injection molding equipment according to claim 1, characterized in that: The loosening member (15) further comprises a top plate (151), the top plate (151) being fixed to the bottom of the output end of the cylinder (8), a threaded rod (152) being rotatably mounted through the bottom of the top plate (151), a cross plate (153) being fixed to the outside of the other end of the threaded rod (152), the cross plate (153) being rotatably connected to the inside of the cover (6), the cross plate (153) being clamped to the inside of the top of the middle column (21), a bracket (154) being threadably mounted on the outside of the threaded rod (152), and a dredging plate (155) being fixed to the bottom of the bracket (154).

8. The plastic container injection molding equipment according to claim 1, characterized in that: A sealing plate (16) is fixed to the top of the bottom wall of the bottom box (7), the inner side of the sealing plate (16) is in contact with the outer side of the mold (19), the top of the sealing plate (16) is aligned with the top of the mold (19), and the outer side of the sealing plate (16) is in contact with the inner side of the cover (6).

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