Salvary leakage prevention non-return nozzle structure for charging barrel of vertical injection molding machine

Abstract

The utility model discloses a vertical injection molding machine charging barrel saliva leakage prevention non-return nozzle structure, which relates to the technical field of injection molding machines, and comprises a base, the top of the base is fixedly connected with an operation table, one side of the top of the operation table is fixedly connected with the injection molding machine, one side of the injection molding machine is provided with a nozzle, a non-return assembly is arranged in the nozzle, and the injection molding machine is fixedly connected with the injection molding machine. And a non-return assembly is arranged on the other side of the top of the operation table, an injection molding assembly is arranged on the other side of the top of the operation table, the non-return assembly and the injection molding assembly are used in cooperation, the non-return assembly comprises a sliding column, and an adjusting block is slidably connected into an adjusting groove and fixedly connected with the sliding column. According to the saliva leakage prevention non-return nozzle structure for the charging barrel of the vertical injection molding machine disclosed by the utility model, the sealing ball clings to the sealing ring under the action of the sealing spring through the arranged non-return assembly, and the sealing ball seals and blocks the injection molding opening, so that melt backflow is prevented, the situations of injection pressure loss and inaccurate metering are avoided, the structure is simple, and the practicability is relatively high.

Description

A structure for preventing drooling and backflow in the barrel of a vertical injection molding machine. Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and in particular to a structure for an anti-drooling and anti-backflow nozzle for a vertical injection molding machine barrel. Background Technology

[0002] The injection nozzle of an injection molding machine is a key component connecting the injection unit and the mold, used for the directional delivery of high-temperature molten plastic. Its core functions include: 1. establishing a high-pressure molten material channel; 2. achieving a sealed connection between the injection system and the mold.

[0003] A typical structure consists of a nozzle body, a heating element, and flow channels, and must withstand high temperatures of 200–400°C and injection pressures of 100–200 MPa. Its performance directly affects injection molding accuracy, energy consumption, and product quality; different structural design schemes are selected based on the characteristics of the processed materials.

[0004] Based on the aforementioned technologies, the applicant believes that traditional injection molding machine nozzles are prone to molten material backflow during injection, leading to injection pressure loss and inaccurate metering. To address these issues, we have developed a vertical injection molding machine barrel anti-drooling and backflow prevention nozzle structure. Summary of the Invention

[0005] This utility model discloses a non-return nozzle structure for preventing drooling in the barrel of a vertical injection molding machine, which aims to solve the technical problem that traditional injection molding machine nozzles are prone to molten material backflow during injection, resulting in injection pressure loss and inaccurate metering.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A anti-drooling and backstop nozzle structure for a vertical injection molding machine barrel includes a base. An operating platform is fixedly connected to the top of the base. An injection molding machine is fixedly connected to one side of the top of the operating platform. A nozzle is mounted on one side of the injection molding machine. A backstop component is installed inside the nozzle. An injection molding assembly is located on the other side of the top of the operating platform. The backstop component and the injection molding assembly cooperate with each other. The backstop component includes a sliding column that is slidably connected inside the nozzle. A sealing spring is fixedly connected to one end of the sliding column, and the other end of the sealing spring is fixedly connected to... The nozzle has a sealing ball, a sealing ring fixedly connected to one side of its inner wall, an injection port fixedly connected to one end of the nozzle, an input pipe fixedly connected to the other end of the nozzle, and an adjustment groove arranged in a circumferential array on the outer wall of the nozzle. A first slot is opened on one side of the adjustment groove, and a second slot is opened on the other side of the adjustment groove. An adjustment block is slidably connected inside the adjustment groove and is fixedly connected to a sliding column. A rotating ring is sleeved on the outer side of the nozzle and is fixedly connected to the adjustment block. A delivery cavity is opened inside the sliding column.

[0008] With the backflow prevention component, the sealing ball is tightly pressed against the sealing ring by the sealing spring, and the sealing ball seals the injection port to prevent the molten material from flowing back, thus avoiding injection pressure loss and inaccurate metering. The structure is simple and highly practical.

[0009] In a preferred embodiment, the backstop assembly includes a fixed plate fixedly connected to the top side of the base. A connecting plate is provided between the fixed plate and the nozzle. The connecting plate is fixedly connected to the top of the operating table. Sliding columns are fixedly connected in a rectangular array inside the connecting plate and the fixed plate. A positioning plate is fixedly connected to the outside of the sliding columns. An upper mold is fixedly connected to the side of the connecting plate near the fixed plate. A cylinder is fixedly connected to the outside of the fixed plate. The telescopic end of the cylinder extends into the interior of the positioning plate and is fixedly connected to the lower mold. A buffer spring is sleeved on the outside of the telescopic end of the cylinder.

[0010] The fixed plate 71, connecting plate 72, and sliding column 74 form a stable support structure to ensure precise docking of the nozzle 5 with the mold (upper mold 73, lower mold 76). The cylinder 78 drives the lower mold 76 to move, and the buffer spring 77 reduces impact, improves mold closing accuracy, and prevents the nozzle 5 from failing to seal due to vibration.

[0011] In a preferred embodiment, a sealing ring is fixedly connected inside the nozzle and between the injection port and the sealing ball.

[0012] The sealing ring is located between the injection port and the sealing ball, enhancing the seal and preventing leakage of high-pressure molten material, while also reducing wear on the sealing ball and extending its service life.

[0013] In a preferred embodiment, a storage cylinder is fixedly connected to the top of the injection molding machine.

[0014] The material storage cylinder is installed directly on top of the injection molding machine, optimizing the molten material delivery path, reducing heat loss, and improving injection molding efficiency.

[0015] In a preferred embodiment, a heat dissipation component is provided on the top side of the base, and the heat dissipation component and the injection molding component are used in conjunction with each other.

[0016] The heat dissipation component works in conjunction with the injection molding component to effectively reduce the operating temperature of the nozzle and surrounding components, preventing high temperatures from causing seal failure or material degradation.

[0017] In a preferred embodiment, a controller is fixedly connected to the outside of the injection molding machine, and both the injection molding machine and the cylinder are electrically connected to the controller.

[0018] The controller centrally controls the injection molding machine and cylinders, enabling automated operation, improving production stability, and reducing errors caused by manual intervention.

[0019] The anti-drooling and anti-backflow nozzle structure for a vertical injection molding machine barrel provided by this utility model has the following advantages:

[0020] Firstly, through the set back check component, under the action of the sealing spring, the sealing ball is tightly attached to the sealing ring, and the sealing ball seals the injection port to prevent the molten material from flowing back, thus avoiding injection pressure loss and inaccurate metering. The structure is simple and highly practical.

[0021] Secondly, the sealing ring is located between the injection port and the sealing ball, enhancing the sealing performance, preventing leakage of high-pressure molten material, and reducing wear on the sealing ball to extend its service life. The storage cylinder is directly installed on the top of the injection molding machine, optimizing the molten material delivery path, reducing heat loss, and improving injection efficiency. The heat dissipation component works in conjunction with the injection molding components to effectively reduce the working temperature of the nozzle and surrounding parts, preventing high temperatures from causing seal failure or material degradation. The controller centrally controls the injection molding machine and cylinders, realizing automated operation, improving production stability, and reducing errors caused by manual intervention. Attached Figure Description

[0022] Figure 1 is a three-dimensional schematic diagram of a vertical injection molding machine barrel anti-drooling and anti-backflow nozzle structure proposed in this utility model.

[0023] Figure 2 is a three-dimensional cross-sectional view of the nozzle of a vertical injection molding machine barrel anti-drooling and backflow prevention nozzle structure proposed in this utility model.

[0024] Figure 3 is a three-dimensional bottom view of a vertical injection molding machine barrel anti-drooling and anti-backflow nozzle structure proposed in this utility model.

[0025] Figure 4 is a three-dimensional schematic diagram of an injection molding assembly with a vertical injection molding machine barrel anti-drooling and anti-backflow nozzle structure proposed in this utility model.

[0026] In the attached diagram: 1. Base; 2. Operating table; 3. Injection molding machine; 4. Storage cylinder; 5. Nozzle; 61. Sliding column; 62. Sealing spring; 63. Sealing ball; 64. Sealing ring; 65. Injection port; 66. Input pipe; 67. Adjustment groove; 68. No. 1 slot; 69. Adjustment block; 610. Rotating ring; 611. No. 2 slot; 612. Conveying chamber; 71. Fixing plate; 72. Connecting plate; 73. Upper mold; 74. Sliding column; 75. Positioning plate; 76. Lower mold; 77. Buffer spring; 78. Cylinder; 8. Heat dissipation assembly; 9. Controller. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0028] The anti-drooling and anti-backflow nozzle structure for a vertical injection molding machine barrel disclosed in this utility model is mainly used in injection molding machine applications.

[0029] Referring to Figures 1-4, a vertical injection molding machine barrel anti-drooling backstop nozzle structure includes a base 1, an operating platform 2 fixedly connected to the top of the base 1, an injection molding machine 3 fixedly connected to one side of the top of the operating platform 2, and a nozzle 5 installed on one side of the injection molding machine 3. A backstop component is provided inside the nozzle, and an injection molding assembly is provided on the other side of the top of the operating platform 2. The backstop component and the injection molding assembly cooperate with each other. The backstop component includes a sliding column 61, which is slidably connected inside the nozzle 5. A sealing spring 62 is fixedly connected to one end of the sliding column 61, and a sealing ball 63 is fixedly connected to the other end of the sealing spring 62. A sealing ring 64 is fixedly connected to one side of the inner wall of the nozzle 5. An injection port 65 is fixedly connected to one end of the nozzle 5, and an input pipe 66 is fixedly connected to the other end of the nozzle 5. An adjustment groove 67 is formed in a circumferential array on the outer wall of the nozzle 5. A first slot 68 is formed on one side of the adjustment groove 67, and a second slot 611 is formed on the other side of the adjustment groove 67. An adjustment block 69 is slidably connected inside the adjustment groove 67. The adjustment block 69 is fixedly connected to the sliding column 61. A rotating ring 610 is sleeved on the outer side of the nozzle 5. The rotating ring 610 is fixedly connected to the adjustment block 69. A delivery cavity 612 is formed inside the sliding column 61. The backstop assembly includes a fixed plate 71, which is fixedly connected to the top side of the base 1. A connecting plate 72 is provided between the fixed plate 71 and the nozzle 5. The connecting plate 72 is fixedly connected to the top of the operating table 2. Sliding columns 74 are fixedly connected in a rectangular array inside the connecting plate 72 and the fixed plate 71. A positioning plate 75 is fixedly connected to the outside of the sliding columns 74. An upper mold 73 is fixedly connected to the side of the connecting plate 72 near the fixed plate 71. A cylinder 78 is fixedly connected to the outside of the fixed plate 71. The telescopic end of the cylinder 78 extends into the interior of the positioning plate 75 and is fixedly connected to the lower mold 76. A buffer spring 77 is sleeved on the outside of the telescopic end of the cylinder 78.

[0030] In this embodiment: Cylinder 78 drives the lower mold 76 to close with the upper mold 73. Buffer spring 77 absorbs the impact to ensure molding accuracy. Then, molten plastic enters the nozzle 5 from the storage cylinder 4 through the input pipe 66. The molten material flows to the injection port 65 through the conveying chamber 612. After injection, hold the rotating ring 610 by hand and rotate the adjusting block 69 out of the second slot 611. Then push the rotating ring 610. The sliding column 61 drives the sealing spring 62 and the sealing ball 63 to move closer to the injection port 65. Then rotate the adjusting block 69 into the first slot 68. Through the backstop component, under the action of the sealing spring 62, the sealing ball 63 is tightly attached to the sealing ring 64. The sealing ball 63 seals and blocks the injection port 65 to prevent molten material backflow and avoid injection pressure loss and inaccurate metering. The structure is simple and highly practical.

[0031] In the above technical solution, considering that traditional injection molding machine nozzles are prone to molten material backflow during injection, leading to injection pressure loss and inaccurate metering, the specific operation is as follows to solve these problems:

[0032] Referring to Figures 1-4, in a preferred embodiment, a sealing ring 64 is fixedly connected inside the nozzle 5, located between the injection port 65 and the sealing ball 63. A material storage cylinder 4 is fixedly connected to the top of the injection molding machine 3. A heat dissipation assembly 8 is provided on one side of the top of the base 1, and the heat dissipation assembly 8 and the injection assembly are used in conjunction. A controller 9 is fixedly connected to the outside of the injection molding machine 3, and the injection molding machine 3 and the cylinder 78 are both electrically connected to the controller 9.

[0033] In this embodiment: the sealing ring 64 is located between the injection port 65 and the sealing ball 63, enhancing the sealing performance, preventing leakage of high-pressure molten material, and reducing wear on the sealing ball 63, thus extending its service life. The storage cylinder 4 is directly installed on the top of the injection molding machine 3, optimizing the molten material conveying path, reducing heat loss, and improving injection efficiency. The heat dissipation component 8 works in conjunction with the injection molding components to effectively reduce the working temperature of the nozzle 5 and surrounding components, preventing high temperature from causing seal failure or material degradation. The controller 9 centrally controls the injection molding machine 3 and the cylinder 78, realizing automated operation, improving production stability, and reducing errors caused by manual intervention.

[0034] Working Principle: During operation, cylinder 78 drives the lower mold 76 to close with the upper mold 73. Buffer spring 77 absorbs impact, ensuring molding accuracy. Molten plastic then flows from storage cylinder 4 through input pipe 66 into nozzle 5. The molten material flows through conveying chamber 612 to injection port 65. After injection, the rotating ring 610 is held by hand, and the adjusting block 69 is rotated out of the second slot 611. Then, the rotating ring 610 is pushed, and sliding column 61 drives sealing spring 62 and sealing ball 63 to move closer to injection port 65. The adjusting block 69 is then rotated into the first slot 68. Under the action of sealing spring 62, sealing ball 63 tightly adheres to sealing ring 64, sealing injection port 65 and preventing molten material backflow. Heat dissipation component 8 continuously cools the injection port, and controller 9 coordinates the operation of each component to achieve a highly efficient and stable anti-drooling injection molding process.

[0035] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A structure for preventing drooling and backflow of a vertical injection molding machine barrel, comprising a base (1), characterized in that: An operating table (2) is fixedly connected to the top of the base (1). An injection molding machine (3) is fixedly connected to one side of the top of the operating table (2). A nozzle (5) is installed on one side of the injection molding machine (3). A backstop assembly is provided inside the nozzle. An injection molding assembly is provided on the other side of the top of the operating table (2). The backstop assembly and the injection molding assembly are used in cooperation with each other. The backstop assembly includes a sliding column (61). The sliding column (61) is slidably connected inside the nozzle (5). A sealing spring (62) is fixedly connected to one end of the sliding column (61). A sealing ball (63) is fixedly connected to the other end of the sealing spring (62). A sealing ring (64) is fixedly connected to one side of the inner wall of the nozzle (5). One end of the nozzle (5) is fixedly connected to an injection port (65), and the other end of the nozzle (5) is fixedly connected to an input pipe (66). The outer wall of the nozzle (5) is provided with an adjustment groove (67) in a circumferential array. A first slot (68) is provided on one side of the adjustment groove (67), and a second slot (611) is provided on the other side of the adjustment groove (67). An adjustment block (69) is slidably connected inside the adjustment groove (67). The adjustment block (69) is fixedly connected to a sliding column (61). A rotating ring (610) is sleeved on the outer side of the nozzle (5). The rotating ring (610) is fixedly connected to the adjustment block (69). A delivery cavity (612) is provided inside the sliding column (61).

2. The anti-drooling and backflow prevention nozzle structure for a vertical injection molding machine barrel according to claim 1, characterized in that: The backstop assembly includes a fixed plate (71), which is fixedly connected to the top side of the base (1). A connecting plate (72) is provided between the fixed plate (71) and the nozzle (5). The connecting plate (72) is fixedly connected to the top of the operating table (2). A sliding column (74) is fixedly connected in a rectangular array inside the connecting plate (72) and the fixed plate (71). A positioning plate (75) is fixedly connected to the outside of the sliding column (74). An upper mold (73) is fixedly connected to the side of the connecting plate (72) near the fixed plate (71). A cylinder (78) is fixedly connected to the outside of the fixed plate (71). The telescopic end of the cylinder (78) extends into the interior of the positioning plate (75) and is fixedly connected to the lower mold (76). A buffer spring (77) is sleeved on the outside of the telescopic end of the cylinder (78).

3. The anti-drooling and backflow prevention nozzle structure for a vertical injection molding machine barrel according to claim 1, characterized in that: A sealing ring (64) is fixedly connected inside the nozzle (5) and between the injection port (65) and the sealing ball (63).

4. The anti-drooling and backflow prevention nozzle structure for a vertical injection molding machine barrel according to claim 1, characterized in that: The top of the injection molding machine (3) is fixedly connected to a storage cylinder (4).

5. The anti-drooling and backflow prevention nozzle structure for a vertical injection molding machine barrel according to claim 1, characterized in that: The base (1) is provided with a heat dissipation component (8) on one side of its top, and the heat dissipation component (8) and the injection molding component are used together.

6. The anti-drooling and backflow prevention nozzle structure for a vertical injection molding machine barrel according to claim 1, characterized in that: A controller (9) is fixedly connected to the outside of the injection molding machine (3), and the injection molding machine (3) and the cylinder (78) are electrically connected to the controller (9).

Images