Bottle cap integrated injection molding equipment and injection molding method thereof

Abstract

The invention discloses integrated bottle cap injection molding equipment and an injection molding method thereof, and relates to the technical field of plastic processing, the integrated bottle cap injection molding equipment comprises a butt joint mechanism and a sprue mechanism, the butt joint mechanism comprises an upper carrier plate, a lower carrier plate and a middle carrier plate, and an upper mold shell and a lower mold shell are arranged between the lower carrier plate and the middle carrier plate. According to the bottle cap, the lower cavity shell is sunken downwards to form the bottle cap wall cavity, the upper cavity shell is sunken upwards to form the bottle cap plate cavity, the bottle cap wall cavity and the bottle cap plate cavity are mutually combined to form the model cavity of the side wall of the bottle cap, and a thin layer of cavity is reserved when the embedded core cavity and the lower cavity shell are mutually buckled, so that a circular cavity of the cap surface of the bottle cap is formed; according to the technical scheme, the circular cavity is reserved in the middle of the bottle cap after the bottle cap injected into injection molding equipment is integrally formed, so that an inner liner with a trademark, a character or a Chinese character can be conveniently added into the cavity of the cap surface subsequently, the diversified customization requirements of customers are met, and the injection molding and mold opening cost for producing various types of bottle caps is saved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic processing, in particular to a bottle cap integrated injection molding device and an injection molding method thereof. Background Art

[0002] Bottle caps are an important part of food and beverage packaging, and are also the first place where consumers come into contact with products. Bottle caps have the function of keeping the contents of the product sealed, and also have the functions of anti-theft opening and safety. The bottle caps of plastic bottle packaging are also plastic products, and plastic bottle caps are generally formed in one piece by injection.

[0003] For example, the patent publication number is: CN117484793A "Rotary push plate two-color milk powder cover injection molding equipment and its control method", the rotary push plate two-color milk powder cover injection molding equipment includes: a first shell, a front mold core is arranged in the first shell, a second shell is arranged on the right side of the first shell so as to be movable left and right, a rear mold core is arranged in the second shell, the front mold core includes two molding stations, one molding station is arranged in the lower half of the front mold core, and the other molding station is arranged in the lower half of the front mold core, and the two molding stations are arranged in a central symmetrical manner; an ejection mechanism, the ejection mechanism is arranged in the first shell, the ejection mechanism is connected to the front mold core, and the ejection mechanism is used to eject the front mold core, the molded two-color milk powder cover and the soft glue mouth; a rotating mechanism, the rotating mechanism is arranged in the first shell, the rotating mechanism is connected to the front mold core, and the rotating mechanism is used to rotate the front mold core after the front mold core is pushed to the right, so that the positions of the two molding stations are interchanged.

[0004] In order to meet the needs of market development, in addition to the safety performance of being airtight and leak-proof, bottle caps can also be printed with trademarks, characters or Chinese characters and other logos on the surface of the bottle caps to enhance the merchant's product publicity. However, in the prior art, the forming of the logos on the surface of the bottle caps is achieved by designing corresponding injection molds. As a result, when merchants need to engrave various logos on the bottle caps, they need to set up a variety of corresponding molds. Therefore, the existing bottle cap injection molds have a small application range. When an enterprise has a variety of bottle cap production needs, the mold opening cost required by the existing injection molding equipment is extremely high. Summary of the invention

[0005] The object of the present invention is to provide a bottle cap integrated injection molding device and an injection molding method thereof, so as to solve the problem raised in the above background technology that when an enterprise has diverse bottle cap production needs, the mold opening cost required by the existing injection molding device is extremely high.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a bottle cap integrated injection molding device, comprising a docking mechanism and a nozzle mechanism, the docking mechanism comprising an upper loading plate, a lower loading plate and a middle loading plate, an upper mold shell and a lower mold shell are arranged between the lower loading plate and the middle loading plate, the inner top wall of the upper mold shell is fixedly connected with the upper cavity shell, and the inner bottom wall of the lower mold shell is fixedly connected with the lower cavity shell, and the injection molding device can be divided into two parts in a split state when being installed and demolded, wherein the upper loading plate, the stepping block, the positioning column, the middle loading plate and the upper mold shell are combined with each other, and the lower mold shell and the downloading plate are combined with each other as the lower mold component, and the upper mold shell can be separated from the lower mold shell during demolding, the annular part of the surface of the lower cavity shell is recessed downward to form a bottle cap wall cavity, and the bottle cap wall cavity is a groove of an annular structure facing downward, and the middle part of the upper cavity shell surface is recessed upward to form a bottle cap plate cavity, and the bottle cap plate cavity is an annular structure facing upward The groove of the structure, and the middle position of the bottle cap plate cavity is the embedded core cavity, the height of the embedded core cavity is slightly higher than the height of the upper cavity shell, the center of the bottle cap plate cavity surface is recessed downward to form the embedded core cavity, the bottom surface of the embedded core cavity is located above the bottom surface of the upper cavity shell, when the lower cavity shell and the upper cavity shell are buckled with each other, a thin layer of cavity is formed between the embedded core cavity and the lower cavity shell, the nozzle mechanism includes a nozzle assembly and a diverter pipe, the nozzle assembly includes a nozzle seat and a material storage pipe, during injection molding, the head of the injection molding machine docks with the nozzle seat, and the head is used to apply pressure to the upper loading plate, so that the upper mold shell and the lower mold shell are docked with each other, and the lower cavity shell and the upper cavity shell inside are buckled with each other to form the model cavity of the bottle cap, an injection port is opened at the center of the injection seat, the storage pipe is connected with the injection port, the upper opening of the diverter pipe is connected with the storage pipe, and the lower opening of the diverter pipe is connected with the bottle cap plate cavity.

[0007] Preferably, positioning columns are fixedly connected at the four corners of the bottom surface of the upper loading plate, and the downloading plate and the middle loading plate are positioned and docked through the positioning columns. Positioning columns are respectively arranged at the four corners of the upper loading plate for positioning, so as to facilitate rapid stacking of the positioning columns, upper mold shell, lower mold shell, downloading plate and middle loading plate when injecting plastic.

[0008] Preferably, the injection pipe seat is located on the upper surface of the upper loading plate, the material storage pipe passes through the lower surface of the upper loading plate, both ends of the upper loading plate are fixedly connected with blocks, and blocks for raising the upper loading plate are respectively arranged on both sides of the upper loading plate, so that a certain space is reserved between the upper loading plate and the middle loading plate.

[0009] Preferably, an electric cylinder is provided on the outer wall of the middle loading plate, an auxiliary mechanism is fixedly connected to the surface of the middle loading plate, the auxiliary mechanism comprises a bent pipe, a piston is slidably connected to the inner wall of the bent pipe, one end of the piston is fixedly connected to a telescopic column, the output end of the electric cylinder is fixedly connected to the telescopic column, the piston in the bent pipe is controlled by the electric cylinder, and the position of the piston is used to adjust the air pressure in the control circuit component and the single vent nozzle, the other end of the bent pipe is connected to a reducer, the bottom end of the reducer is connected to the control circuit component, the bottom opening of the control circuit component is connected to the embedded core cavity, so as to form a negative pressure in the cavity between the embedded core cavity and the lower cavity shell, so as to fill the cavity after the plastic is sucked in.

[0010] Preferably, the path control component includes an air pipe, the reducer is connected to the embedded core cavity through the air pipe, the top of the air pipe is fixedly connected with a leak plate, the bottom of the air pipe is provided with a ball core, and a spring is fixedly connected between the ball core and the leak plate. When the airflow direction is from bottom to top, the airflow pushes the ball core upward, and the path control component connects the embedded core cavity and the bent pipe. When the airflow direction is from top to bottom, the airflow pushes the ball core downward, so that the ball core is sealed on the air port of the embedded core cavity, thereby isolating the embedded core cavity and the bent pipe air path.

[0011] Preferably, the outer wall of the reducer is connected to a single air nozzle, and the gas pressurized by the piston is discharged from the single air nozzle outside the reducer. The airflow discharged outward from the single air nozzle blows the surface of the embedded core cavity obliquely downward, thereby cooling the plastic inside the embedded core cavity to quickly shape it.

[0012] An injection molding method of a bottle cap integrated injection molding device comprises the following steps: Step 1: injecting plastic into the bottle cap plate cavity from the injection port mechanism, filling the space of the bottle cap plate cavity and the bottle cap wall cavity; Step 2: Suction the material. The control circuit assembly draws pressure upwards and uses the negative pressure under the embedded core cavity to attract the plastic to pour in. Step 3: Auxiliary shaping: airflow is introduced above the embedded core cavity to dissipate heat and accelerate shaping of the plastic below the embedded core cavity; Step 4: Assist demoulding: strong negative pressure is sucked into the embedded core cavity to assist the bottle cap in demoulding.

[0013] Preferably, in step 2, the electric cylinder drives the piston to move from the middle position of the curved pipe to the outer limit position.

[0014] Preferably, in step three, the electric cylinder drives the piston to move from the outer limit point of the curved pipe to the inner limit point.

[0015] Preferably, in step four, the electric cylinder drives the piston to move from the inner limit point of the curved pipe to the middle position.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the lower cavity shell is depressed downward to form the bottle cap wall cavity, and the upper cavity shell is depressed upward to form the bottle cap plate cavity. When the lower cavity shell and the upper cavity shell are combined with each other, the bottle cap wall cavity and the bottle cap plate cavity are combined with each other to form the side wall model cavity of the bottle cap. In addition, the middle position of the bottle cap plate cavity is depressed downward to form an embedded core cavity, so that a thin layer of cavity is reserved when the embedded core cavity and the lower cavity shell are buckled with each other, so as to form a circular cavity on the bottle cap cover surface, so that the plastic injected into the injection molding equipment reserves a circular cavity in the middle after the bottle cap is integrally formed, so as to facilitate the subsequent addition of an inner liner with a trademark, character or Chinese character into the cavity of the cover surface, so as to meet the diversified customization needs of customers and save the injection molding mold opening cost for producing multiple types of bottle caps.

[0017] 2. In the present invention, the piston is driven to move outward by an electric cylinder, so that negative pressure is formed inside the bent pipe due to the pumping pressure of the piston, and the molten plastic is sucked by the negative pressure formed inside the embedded core cavity, so that the plastic is guided into the narrow space of the bottle cap plate by the negative pressure, and the force of the negative pressure is used to resist the hindrance of the tension of the plastic itself, so that the plastic can fill the space below the embedded core cavity, avoiding air pockets in the molded bottle cap due to tension, thereby ensuring the integrity of the bottle cap molding.

[0018] 3. In the present invention, the piston is driven to move inward by an electric cylinder, so that high pressure is generated inside the bent pipe due to the action of the piston, causing the airflow in the bent pipe to move downward, and the spherical core is used to separate the bent pipe from the embedded core cavity, so as to meet the requirement of the airflow to be ejected outward from the single vent nozzle. The airflow discharged outward from the single vent nozzle blows the surface of the embedded core cavity obliquely downward, taking away the temperature of the molten plastic, so that the plastic inside the embedded core cavity is cooled to quickly shape, thereby avoiding the problem that the thin part of the bottle cap is damaged due to the loose structure during subsequent demolding, and further ensuring the integrity of the bottle cap molding.

[0019] 4. In the present invention, when the plastic below the embedded core cavity is completely formed, during the bottle cap demoulding process, the piston is driven to move outward by the electric cylinder, so that negative pressure is formed inside the bent pipe due to the suction pressure of the piston, and the upper surface of the bottle cap is subjected to negative pressure by utilizing the connection of the air pipe. The negative pressure of the airflow is utilized to resist the adsorption force of the lower cavity shell on the bottle cap surface, and the auxiliary equipment is used for demoulding.

[0020] 5. In the present invention, the material storage tube is connected to the bottle cap plate cavity through a plurality of equally spaced diversion tubes, so that the molten plastic in the material storage tube enters the bottle cap plate cavity from a plurality of directions, which facilitates the molten plastic to quickly fill the annular cavity, avoids the limitation of plastic fluidity during single injection port injection molding and affects the molding effect, and ensures that the material distribution on the surface of the molded bottle cap is more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a bottle cap integrated injection molding device of the present invention; Figure 2 It is a schematic diagram of the structure between the upper loading plate and the middle loading plate of a bottle cap integrated injection molding device of the present invention; Figure 3 It is a side sectional view of a bottle cap integrated injection molding device of the present invention; Figure 4 This is a partial structural disassembly effect diagram of a bottle cap integrated injection molding device of the present invention; Figure 5 It is a structural schematic diagram of a nozzle mechanism and an auxiliary mechanism in a bottle cap integrated injection molding device of the present invention; Figure 6 This is a schematic diagram of the internal structure of a control circuit component in a bottle cap integrated injection molding device of the present invention; Figure 7 For the present invention Figure 6 A magnified rendering of the local structure at point A in the middle; Figure 8 This is a schematic structural diagram of a lower cavity shell in a bottle cap integrated injection molding device of the present invention; Fig. 9 It is a structural schematic diagram of an upper cavity shell in a bottle cap integrated injection molding device of the present invention; Fig.10 This is a rendering of the bottle cap being molded in the upper cavity shell and the lower cavity shell of a bottle cap integrated injection molding device of the present invention; Fig.11 The present invention is a flowchart of an injection molding method of a bottle cap integrated injection molding device.

[0022] In the figure: 1. docking mechanism; 11. upper loading plate; 12. building block; 13. positioning column; 14. upper mold shell; 15. lower mold shell; 16. lower loading plate; 17. middle loading plate; 2. injection port mechanism; 21. injection port assembly; 210. injection pipe seat; 211. injection port; 212. storage pipe; 22. diverter pipe; 3. electric cylinder; 4. auxiliary mechanism; 41. telescopic column; 42. bending pipe; 43. piston; 44. reducer; 45. control circuit assembly; 451. ball core; 452. air pipe; 453. spring; 454. leak plate; 46. single vent nozzle; 5. lower cavity shell; 50. bottle cap wall cavity; 6. upper cavity shell; 60. bottle cap plate cavity; 61. embedded core cavity. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Embodiment 1: According to Figure 1-10As shown: a bottle cap integrated injection molding device, including a docking mechanism 1 and a nozzle mechanism 2, the docking mechanism 1 includes an upper loading plate 11, a lower loading plate 16 and a middle loading plate 17, an upper mold shell 14 and a lower mold shell 15 are arranged between the lower loading plate 16 and the middle loading plate 17, the inner top wall of the upper mold shell 14 is fixedly connected with an upper cavity shell 6, the inner bottom wall of the lower mold shell 15 is fixedly connected with a lower cavity shell 5, the annular part of the surface of the lower cavity shell 5 is concave downward to form a bottle cap wall cavity 50, and the middle part of the surface of the upper cavity shell 6 is concave upward to form a bottle cap plate cavity 60, the center of the surface of the bottle cap plate cavity 60 is recessed downward to form an embedded core cavity 61, the bottom surface of the embedded core cavity 61 is located above the bottom surface of the upper cavity shell 6, the nozzle mechanism 2 includes a nozzle assembly 21 and a diverter tube 22, the nozzle assembly 21 includes a nozzle tube seat 210 and a material storage tube 212, a material injection port 211 is opened at the center of the nozzle tube seat 210, the material storage tube 212 is connected to the material injection port 211, the upper end of the diverter tube 22 is connected to the material storage tube 212, and the lower end of the diverter tube 22 is connected to the bottle cap plate cavity 60.

[0025] In this embodiment, the split state of the injection molding equipment during demoulding installation can be divided into two parts, wherein the upper loading plate 11, the stepping block 12, the positioning column 13, the middle loading plate 17 and the upper mold shell 14 are combined with each other, and the lower mold shell 15 and the lower loading plate 16 are combined with each other as the lower mold member, and the upper mold shell 14 can be separated from the lower mold shell 15 during demoulding. During injection molding, the head of the injection molding machine docks with the injection tube seat 210, and the head is used to apply pressure to the upper loading plate 11, so that the upper mold shell 14 and the lower mold shell 15 are docked with each other, and the lower cavity shell 5 and the upper cavity shell 6 inside are buckled with each other to form a mold cavity of the bottle cap; The bottle cap wall cavity 50 is a groove of an annular structure facing downward, and the outer edge of the lower cavity shell 5 bulges upward to form a protective structure, so that the upper cavity shell 6 and the lower cavity shell 5 are positioned relative to each other, and at the same time, the airtightness of the lower cavity shell 5 and the upper cavity shell 6 are ensured. Similarly, the bottle cap plate cavity 60 is a groove of an annular structure facing upward, and the middle position of the bottle cap plate cavity 60 is an embedded core cavity 61, and the height of the embedded core cavity 61 is slightly higher than the height of the upper cavity shell 6, so that when the lower cavity shell 5 and the upper cavity shell 6 are buckled together, a thin layer is formed between the embedded core cavity 61 and the lower cavity shell 5. During the injection molding of the bottle cap, most of the molten plastic enters into the cavities of the bottle cap wall cavity 50 and the bottle cap plate cavity 60 to form the outer wall of the bottle cap. With the continuous injection of plastic, the plastic enters the bottom of the embedded core cavity 61 to form the top cover of the bottle cap, and the center of the top cover of the bottle cap forms a cavity for the inner liner. After the bottle cap is formed, an inner liner with a trademark, characters or Chinese characters can be added to the cavity of the cap surface according to the manufacturer's requirements. The inner liner can be made of a material different from that of the bottle cap body to meet the diverse customization needs of customers.

[0026] Embodiment 2: According to Figure 2 , Figure 4 and Figure 5As shown, the four corners of the bottom surface of the upper loading plate 11 are fixedly connected with positioning columns 13, and the lower loading plate 16 and the middle loading plate 17 are positioned and docked through the positioning columns 13. The injection pipe seat 210 is located on the upper surface of the upper loading plate 11, and the storage pipe 212 passes through the lower surface of the upper loading plate 11. Both ends of the upper loading plate 11 are fixedly connected with the blocks 12.

[0027] In this embodiment, in order to meet the high-precision requirements when the lower cavity shell 5 and the upper cavity shell 6 are connected, positioning columns 13 are respectively set at the four corners of the upper loading plate 11 for positioning, so that the positioning columns 13, the upper mold shell 14, the lower mold shell 15, the lower plate 16 and the middle loading plate 17 can be quickly stacked when the plastic is injected. Blocks 12 for padding are respectively set on both sides of the upper loading plate 11, so that a certain space is reserved between the upper loading plate 11 and the middle loading plate 17, so that the auxiliary mechanism 4 can be placed on the middle loading plate 17 to assist in bottle cap molding, and it is also convenient to divert the molten plastic injected into the injection port assembly 21 to different directions through multiple diversion pipes 22. The diversion pipes 22 are evenly distributed above the bottle cap plate cavity 60 and enter the bottle cap plate cavity 60 from multiple injection ports, so that the molten plastic can quickly and evenly fill the cavity.

[0028] Embodiment 3: According to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, an electric cylinder 3 is provided on the outer wall of the middle loading plate 17, an auxiliary mechanism 4 is fixedly connected to the surface of the middle loading plate 17, the auxiliary mechanism 4 includes a bent pipe 42, a piston 43 is slidably connected to the inner wall of the bent pipe 42, one end of the piston 43 is fixedly connected to a telescopic column 41, the output end of the electric cylinder 3 is fixedly connected to the telescopic column 41, the other end of the bent pipe 42 is connected to a reducer 44, the bottom end of the reducer 44 is connected to a control circuit component 45, and the bottom of the control circuit component 45 is connected to the embedded core cavity 61.

[0029] In this embodiment, since a circular groove is reserved on the plate surface of the bottle cap, the thickness of the plastic below the inner liner of the bottle cap is relatively thin. The molten plastic is a fluid, and the surface of the fluid has a certain tension. When the molten plastic flows through a narrow opening, the tension will limit the plastic from entering a narrow place, which can easily make the thinner plate surface below the bottle cap difficult to form. An auxiliary mechanism 4 is arranged above the middle carrier plate 17, and the piston 43 in the bent pipe 42 is controlled by the electric cylinder 3. The position of the piston 43 is used to adjust the air pressure in the control circuit component 45 and the single vent nozzle 46, so as to form a negative pressure in the cavity between the embedded core cavity 61 and the lower cavity shell 5, so as to fill the cavity after the plastic is sucked in, thereby avoiding defects in the bottle cap due to too small a gap and tension limitation, so as to facilitate the integral molding of the formed bottle cap structure.

[0030] Embodiment 4: According to Figure 3 , Figure 5 , Figure 6and Figure 7 As shown, the control circuit assembly 45 includes an air pipe 452, and the reducer 44 is connected to the embedded core cavity 61 through the air pipe 452. The top of the air pipe 452 is fixedly connected with a leak plate 454, and the bottom of the air pipe 452 is provided with a ball core 451, and a spring 453 is fixedly connected between the ball core 451 and the leak plate 454. The outer wall of the reducer 44 is connected with a single vent 46.

[0031] Due to the influence of the bottle cap design, it is not only difficult to guide the molten plastic into the narrow opening during molding, but also the strength of the bottle cap will be affected if it is not thin enough, which will lead to two problems. First, the thinner part of the bottle cap is not strong enough during cooling and molding, which easily leads to appearance defects after demolding. Second, the thinner part has a larger contact area with the inner wall of the lower mold, resulting in excessive adsorption force and difficulty in demolding. In this embodiment, when the control circuit assembly 45 absorbs air pressure to form a negative pressure environment, the airflow enters the auxiliary mechanism 4 from the embedded core cavity 61, and the airflow direction is from bottom to top. The airflow pushes the ball core 451 upward, and the control circuit assembly 45 connects the embedded core cavity 61 and the bent pipe 42; Similarly, the negative pressure formed by the adsorption of the control circuit component 45 is used to assist the demoulding of the object, and the upward force of the airflow is used to offset the adsorption force of the lower mold on the bottle cap. The direction of the airflow is also from bottom to top. At this time, the embedded core cavity 61 and the curved tube 42 are also connected to each other. On the contrary, when the piston 43 is pushed inward, the gas in the curved tube 42 is discharged downward, and the direction of the airflow is from top to bottom. The airflow pushes the ball core 451 downward, so that the ball core 451 is sealed on the air port of the embedded core cavity 61, thereby isolating the air path of the embedded core cavity 61 and the curved tube 42, and the gas pressurized by the piston 43 is discharged from the single vent nozzle 46 on the outside of the reducer 44. The airflow discharged outward by the single vent nozzle 46 blows the surface of the embedded core cavity 61 obliquely downward, and the plastic inside the embedded core cavity 61 is cooled to quickly shape it.

[0032] Embodiment 5: According to Figure 1 , Figure 3 and Fig.11 As shown, an injection molding method of a bottle cap integrated injection molding device comprises the following steps: 1) Injection: plastic is injected into the bottle cap plate cavity 60 from the injection port mechanism 2, filling the space of the bottle cap plate cavity 60 and the bottle cap wall cavity 50; 2) Suction: the control circuit assembly 45 draws pressure upwards, and uses the negative pressure under the embedded core cavity 61 to attract the plastic to be poured in, wherein the electric cylinder 3 drives the piston 43 to move from the middle position of the curved pipe 42 to the outer limit position; 3) Auxiliary shaping: air flow is introduced above the embedded core cavity 61 to dissipate heat, thereby accelerating the shaping of the plastic below the embedded core cavity 61, wherein the electric cylinder 3 drives the piston 43 to move from the outer limit point of the elbow 42 to the inner limit point; 4) Assisting demoulding: a strong negative pressure is sucked into the embedded core cavity 61 to assist the bottle cap demoulding, wherein the electric cylinder 3 drives the piston 43 to move from the inner limit point of the curved pipe 42 to the middle position.

[0033] Attached Fig.11 It is a cyclic process flow chart of the injection molding method of the bottle cap integrated injection molding equipment. The solid arrows in the figure represent the cyclic process flow of the injection molding equipment, and the hollow arrows in the figure represent the movement direction of the output end of the electric cylinder 3 in the injection molding equipment.

[0034] In this embodiment, the complete process of injection molding a single bottle cap is as follows: the head of the injection molding machine is docked with the injection tube seat 210, and the injection molding machine provides downward pressure on the upper carrier plate 11, so that the lower cavity shell 5 and the upper cavity shell 6 are docked with each other, and the lower mouth of the shunt tube 22 is docked with the injection port of the bottle cap plate cavity 60, and the injection molding machine is used to inject molten material into the injection tube seat 210, and the material flows into each shunt tube 22 through the material storage tube 212, and enters the inner cavity of the bottle cap plate cavity 60 from the injection port through multiple shunt tubes 22. At this time, the electric cylinder 3 also drives the piston 43 to move from the middle position of the bent pipe 42 to the outermost end, and uses the negative pressure generated by the piston 43 to completely discharge the gas below the embedded core cavity 61, so that the negative pressure generated in the embedded core cavity 61 will enter The molten plastic entering the bottle cap plate cavity 60 is sucked in, so that the plastic fills the entire cavity of the bottle cap model. After the cavity is filled with plastic, the injection molding machine stops feeding, and the electric cylinder 3 drives the piston 43 to advance to the innermost end of the curved tube 42, and the airflow displaced by the piston 43 is repelled toward the single vent nozzle 46, and the air path on the upper surface of the embedded core cavity 61 is used to take away part of the heat, so that the plastic below the embedded core cavity 61 solidifies faster and more firmly. Finally, the upper mold shell 14 and the upper cavity shell 6 are separated upward, so that the upper cavity shell 6 is separated from the lower cavity shell 5. At the same time, the electric cylinder 3 drives the piston 43 to move from the innermost end of the curved tube 42 to the middle, and the suction force generated by pulling is used to adsorb the bottle cap upward to assist the bottle cap to be quickly demolded from the lower cavity shell 5 and the upper cavity shell 6.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bottle cap integrated injection molding device, comprising a docking mechanism (1) and a nozzle mechanism (2), wherein the docking mechanism (1) comprises an upper loading plate (11), a lower loading plate (16) and a middle loading plate (17), an upper mold shell (14) and a lower mold shell (15) are arranged between the lower loading plate (16) and the middle loading plate (17), characterized in that: The inner top wall of the upper mold shell (14) is fixedly connected to the upper cavity shell (6), and the inner bottom wall of the lower mold shell (15) is fixedly connected to the lower cavity shell (5). The annular portion of the surface of the lower cavity shell (5) is recessed downward to form a bottle cap wall cavity (50). The middle portion of the surface of the upper cavity shell (6) is recessed upward to form a bottle cap plate cavity (60). The center portion of the surface of the bottle cap plate cavity (60) is recessed downward to form an embedded core cavity (61). The bottom surface of the embedded core cavity (61) is located at the upper cavity shell ( 6) above the bottom surface, the nozzle mechanism (2) comprises a nozzle assembly (21) and a diverter pipe (22), the nozzle assembly (21) comprises a nozzle tube seat (210) and a material storage tube (212), a material injection port (211) is provided at the center of the nozzle tube seat (210), the material storage tube (212) is communicated with the material injection port (211), the upper end of the diverter pipe (22) is communicated with the material storage tube (212), and the lower end of the diverter pipe (22) is communicated with the bottle cover plate cavity (60).

2. The bottle cap integrated injection molding device according to claim 1, characterized in that: Positioning columns (13) are fixedly connected at four corner positions of the bottom surface of the upper loading plate (11), and the lower loading plate (16) and the middle loading plate (17) are positioned and docked via the positioning columns (13).

3. The bottle cap integrated injection molding device according to claim 1, characterized in that: The injection pipe seat (210) is located on the upper surface of the upper loading plate (11), the material storage pipe (212) passes through the lower surface of the upper loading plate (11), and both ends of the upper loading plate (11) are fixedly connected to the blocks (12).

4. The bottle cap integrated injection molding device according to claim 1, characterized in that: An electric cylinder (3) is provided on the outer wall of the middle loading plate (17); an auxiliary mechanism (4) is fixedly connected to the surface of the middle loading plate (17); the auxiliary mechanism (4) comprises a bent pipe (42); a piston (43) is slidably connected to the inner wall of the bent pipe (42); one end of the piston (43) is fixedly connected to a telescopic column (41); an output end of the electric cylinder (3) is fixedly connected to the telescopic column (41); the other end of the bent pipe (42) is connected to a reducer (44); the bottom end of the reducer (44) is connected to a control circuit component (45); the bottom opening of the control circuit component (45) is connected to the embedded core cavity (61).

5. The bottle cap integrated injection molding device according to claim 4, characterized in that: The control circuit assembly (45) comprises an air pipe (452), the reducer (44) is connected to the embedded core cavity (61) via the air pipe (452), a leak plate (454) is fixedly connected to the top end of the air pipe (452), a ball core (451) is provided at the bottom end of the air pipe (452), and a spring (453) is fixedly connected between the ball core (451) and the leak plate (454).

6. The bottle cap integrated injection molding device according to claim 4, characterized in that: The outer side wall of the reducer (44) is in communication with a single vent nozzle (46).

7. An injection molding method of a bottle cap integrated injection molding device, characterized in that: The bottle cap integrated injection molding device according to any one of claims 1 to 6 is used, comprising the following steps: S1, injecting plastic into the bottle cap plate cavity (60) from the injection port mechanism (2), filling the space of the bottle cap plate cavity (60) and the bottle cap wall cavity (50); S2, material suction, the control circuit component (45) draws pressure upward, and uses the negative pressure from the inner core cavity (61) to attract plastic to be poured in; S3, auxiliary shaping, air flow is introduced above the embedded core cavity (61) to dissipate heat, and the shaping of the plastic below the embedded core cavity (61) is accelerated; S4, assisting demoulding, a strong negative pressure is sucked into the embedded core cavity (61) to assist the bottle cap in demoulding.

8. The injection molding method of the bottle cap integrated injection molding equipment according to claim 7, characterized in that: In step S2, the electric cylinder (3) drives the piston (43) to move from the middle position of the curved pipe (42) to the outer limit point.

9. The injection molding method of the bottle cap integrated injection molding equipment according to claim 7, characterized in that: In step S3, the electric cylinder (3) drives the piston (43) to move from the outer limit point of the curved pipe (42) to the inner limit point.

10. The injection molding method of the bottle cap integrated injection molding equipment according to claim 7, characterized in that: In step S4, the electric cylinder (3) drives the piston (43) to move from the inner limit point of the curved pipe (42) to the middle position.

Images