A multi-station vertical injection molding machine

Abstract

The utility model relates to the field of plastic processing machinery, especially relates to multi-station double -color synchronous injection molding equipment among injection molding equipment manufacturing technology, a kind of multi-station vertical injection molding machine, including injection molding assembly and shaping assembly, the injection molding assembly includes hopper, screw, hydraulic cylinder, the hopper is located at the top of injection molding assembly, the screw is installed below hopper and vertically downward, and the nozzle between hydraulic cylinder and the bottom of screw at least has 20CM vertical space, the shaping assembly is a circular turntable with vertical rotation axis, and it is evenly distributed with multiple mold installation stations in the circumference, and central cooling system is arranged in the center of the circular turntable, the shaping assembly and injection molding assembly meet at the vertical space between the nozzle between hydraulic cylinder and the bottom of screw, and the position of the mold installation station is set corresponding to hydraulic cylinder.

Description

Technical Field

[0001] This utility model relates to the field of plastic processing machinery, and in particular to a multi-station dual-color synchronous injection molding equipment in injection molding equipment manufacturing technology. Background Technology

[0002] With the continuous improvement of living standards and the development of the plastics industry, plastic products are used in all aspects of life and production, leading to increasingly higher requirements for the shape of plastic products. Plastic products are mainly formed by injection molding using injection molds. Injection molding equipment is divided into two types: horizontal injection molding equipment and vertical injection molding equipment.

[0003] Modern industrial injection molding equipment has high requirements for power control, temperature control, and cooling molding. Therefore, the main structure of injection molding equipment is generally large. Even if it is replaced with vertical injection molding equipment with a smaller footprint, the overall structure of vertical injection molding equipment is still relatively bulky due to the requirements for power control, temperature control, and cooling molding. It is difficult to match it with a suitable production line to achieve streamlined operation, which greatly reduces production efficiency. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a multi-station vertical injection molding machine.

[0005] This utility model is achieved through the following technical solution: a multi-station vertical injection molding machine, including an injection molding assembly and a shaping assembly. The injection molding assembly includes a hopper, a screw, and a hydraulic cylinder. The hopper is located at the top of the injection molding assembly, and the screw is installed below the hopper and vertically downward. There is at least a 20cm vertical space between the hydraulic cylinder and the nozzle at the bottom of the screw. The shaping assembly is a circular turntable with a vertical axis of rotation, on which multiple mold mounting stations are evenly distributed around its circumference. The bottom surface of the circular turntable is provided with a rotation drive mechanism, and a central cooling system is set at the center of the circular turntable. The central cooling system is used to cool the mounted molds. The shaping assembly and the injection molding assembly intersect at the vertical space between the hydraulic cylinder and the nozzle at the bottom of the screw. The mold mounting stations are set corresponding to the positions of the hydraulic cylinders. This design innovatively separates the cooling device originally located on the injection molding machine body, leaving space for the injection molding machine body to match the automated production line.

[0006] Furthermore, the above solution includes a through lifting and hollowing channel and a mold mounting plate. The mold mounting plate is used to mount the mold to be processed on it. The mold mounting plate is slightly larger than the cross-section of the lifting and hollowing channel in at least two opposite directions, so that the mold mounting plate can be placed above the lifting and hollowing channel. The lifting and hollowing channel is set to correspond to the position of the hydraulic cylinder, and the cross-section of the hydraulic cylinder is smaller than the cross-section of the lifting and hollowing channel in all directions.

[0007] Furthermore, the above solution includes a central cooling system that stores cooling water, and several cooling water output ports and cooling water return ports that are evenly distributed around the perimeter of the central cooling system. The cooling water output ports and the cooling water return ports can be connected by pipes to cool the molten plastic injected into the mold cavity.

[0008] Furthermore, the above-mentioned solution includes a hydraulic power unit on the injection molding assembly, which provides power support for the screw and hydraulic cylinder.

[0009] Furthermore, the above solution includes one or more injection molding components and one shaping component. The multiple injection molding components and the shaping component all converge in the vertical space between the nozzle at the bottom of the hydraulic cylinder and the screw. This technical solution provides the function of simultaneously applying color to the mold multiple times.

[0010] Furthermore, the above solution includes a disc positioning component on the injection molding assembly, which is used to measure the relative position between the mold installation station and the lifting platform.

[0011] Furthermore, the above solution includes a demolding device on the shaping component, which is not located in the injection molding component. Attached Figure Description

[0012] Appendix Figure 1 -- Embodiment 1 of this utility model of Right view Appendix Figure 2 —A three-dimensional structural diagram of Embodiment 1 of this utility model Appendix Figure 3 —A three-dimensional structural diagram of the C-shaped injection molding component in Embodiment 1 of this utility model Appendix Figure 4 —A three-dimensional structural diagram of Embodiment 2 of this utility model

[0013] 1 – C-shaped injection molding component; 11 – Hopper; 12 – Screw 14 - Hydraulic Cylinder 15 – Hydraulic power unit; 2 – Shaping assembly; 21 – Circular turntable 22—Mold Installation Station; 221—Lifting Hollow-out Channel 222 - Mold mounting plate; 23 - Central cooling system 231—Cooling water output interface; 232—Cooling water return interface 24—Manual demolding device Detailed Implementation

[0014] The following will further explain the concept, specific structure and technical effects of this utility model in conjunction with the accompanying drawings, so as to fully understand the purpose, features and effects of this invention.

[0015] It should be noted that in the description of this utility model, the terms "front", "rear", "upper", "lower", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0016] like Figures 1 to 3As shown in Embodiment 1 of this utility model, it includes a C-shaped injection molding assembly 1 and a shaping assembly 2. The injection molding assembly includes a hopper 11, a screw 12, and a hydraulic cylinder 14. The hopper 11 is located at the top of the injection molding assembly 1, and the screw 12 is installed below the hopper 11 and vertically downwards, with at least a 20 cm vertical space between it and the hydraulic cylinder 14. A hydraulic power device 15 is also installed at the bottom of the C-shaped injection molding assembly 1, which provides power support for the screw 12 and the hydraulic cylinder 14. The shaping assembly 2 is a circular turntable 21 with a vertical axis of rotation, on which multiple mold mounting stations 22 are evenly distributed around its circumference. Each mold mounting station 22 includes a through lifting and hollowing channel 221 and a mold mounting plate 222. The mold mounting plate 222 is used to mount the mold required for processing on top of it. The mold mounting plate 222 is slightly larger than the cross-section of the lifting and hollowing channel 221 in two opposite directions, so that the mold mounting plate 222 can be placed in the lifting and hollowing channel. Above channel 221, a rotary drive mechanism is provided on the bottom surface of the circular turntable 21. A central cooling system 23 is provided at the center of the circular turntable 21. The central cooling system 23 stores condensate. Several cooling water output ports 231 and condensate return ports 232 are evenly distributed around the periphery of the central cooling system 23. The condensate output ports 231 and the cooling water return ports 232 can be connected by pipes to cool the molten plastic injected into the mold cavity. The shaping component 2 and the injection molding component 1 meet at the vertical space of the hydraulic cylinder 14. The lifting hollow channel 221 is set corresponding to the position of the hydraulic cylinder 14, and the cross-section of the hydraulic cylinder 14 is smaller than the cross-section of the lifting hollow channel 221 in all directions, so that the hydraulic cylinder 14 can pass through the lifting hollow channel 221. The C-shaped injection molding component 1 is also provided with a disc positioning component (not shown in the figure). The disc positioning component is used to measure the relative position between the mold mounting plate 222 and the hydraulic cylinder 14.

[0017] In Application Example 1, the mold is first installed on the mold mounting plate 222, and then plastic granules are poured into the material head 11. When the mold mounting plate 222 is above the hydraulic cylinder 14, the hydraulic cylinder 14 rises and drives the mold on the mold mounting plate 222. The plastic granules melt under the action of the screw 12 and are injected into the mold cavity. After the molten plastic is injected, the hydraulic cylinder 14 is lowered until the mold mounting plate 222 is no longer in contact with the hydraulic cylinder 14. At this time, the central cooling system 23 rapidly cools the molten plastic in the mold cavity until it is solidified through the cooling water output interface 231 and the cooling water return interface 232 connected to the mold pipe.

[0018] The advantage of Embodiment 1 is that the central cooling system 23 is separated and placed in the middle of the circular turntable 21, which makes full use of space and improves production efficiency. like Figure 4 As shown, Embodiment 2 of this utility model includes two C-shaped injection molding components 1 and one shaping component 2. The two C-shaped injection molding components 1 are respectively installed at two positions opposite to the shaping component 2. A manual demolding device 24 is also installed on the shaping component 2 at a position outside the two C-shaped injection molding components 1.

[0019] In application embodiment 2, since there are two C-shaped injection molding components 1, the mold can be injected twice. When the molten plastic in the mold cavity has cooled down, it is manually demolded when the mold mounting plate 222 connected to it rotates to the position of the manual demolding device 24.

[0020] The advantage of Example 2 is that the dual-position C-shaped injection molding assembly enables multiple injection molding, meeting higher product requirements.

[0021] The innovativeness of this design lies in enabling high-efficiency production of multiple molds, multiple mold positions, and large batches on one or two injection molding machines simultaneously. The cooling device, originally located on the injection molding machine body, has been separated, leaving space for the injection molding machine body to match the automated production line. In addition, the existing injection molding machine production line has been optimized by directly installing the hot runner module at the nozzle of the spiral push rod pipe. In contrast, existing automated production lines install the hot runner module on the mold, thus improving the utilization rate of the hot runner module.

[0022] It should be stated that the above specific embodiments are merely preferred embodiments of this utility model and the technical principles used therein. Within the scope of the technology disclosed in this utility model, any changes or substitutions that are easily conceived by those skilled in the art should be covered within the protection scope of this utility model.

Claims

1. A multi-station vertical injection molding machine, characterized in that: The device includes an injection molding assembly and a shaping assembly. The injection molding assembly includes a hopper, a screw, and a hydraulic cylinder. The hopper is located at the top of the injection molding assembly, and the screw is installed below the hopper and pointing vertically downwards. There is at least a 20 cm vertical space between the hydraulic cylinder and the nozzle at the bottom of the screw. The shaping assembly is a circular turntable with a vertical axis of rotation. Multiple mold mounting stations are evenly distributed around its circumference. The bottom surface of the circular turntable is equipped with a rotation drive mechanism, and a central cooling system is located at the center of the circular turntable to cool the mounted molds. The shaping assembly and the injection molding assembly intersect in the vertical space between the hydraulic cylinder and the nozzle at the bottom of the screw. The mold mounting stations are positioned corresponding to the positions of the hydraulic cylinders.

2. The multi-station vertical injection molding machine according to claim 1, characterized in that: The mold installation station includes a through lifting and hollowing channel and a mold mounting plate. The mold mounting plate is used to install the mold to be processed on it. The mold mounting plate is larger than the cross-section of the lifting and hollowing channel in at least two opposite directions so that the mold mounting plate can be placed above the lifting and hollowing channel. The lifting and hollowing channel is set to correspond to the position of the hydraulic cylinder, and the cross-section of the hydraulic cylinder is smaller than the cross-section of the lifting and hollowing channel in all directions.

3. A multi-station vertical injection molding machine according to claim 1, characterized in that: The central cooling system stores cooling water, and several cooling water output ports and cooling water return ports are evenly distributed around the perimeter of the central cooling system. The cooling water output ports and cooling water return ports can be connected by pipes to cool the molten plastic injected into the mold cavity.

4. A multi-station vertical injection molding machine according to claim 1, characterized in that: The injection molding assembly is equipped with a hydraulic power unit, which provides power support for the screw and hydraulic cylinder.

5. A multi-station vertical injection molding machine according to claim 1, characterized in that: There is one or more injection molding components, and there is one shaping component. All of the injection molding components and the shaping component are located in the vertical space between the nozzle at the bottom of the hydraulic cylinder and the screw.

6. A multi-station vertical injection molding machine according to claim 1, characterized in that: The injection molding assembly is also equipped with a disc positioning assembly, which is used to measure the relative position between the mold installation station and the hydraulic cylinder.

7. A multi-station vertical injection molding machine according to claim 1, characterized in that: The molding component is also provided with a demolding device, which is not located in the position of the injection molding component.

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