Ejecting device for rapid demolding for injection cup production
By using electromagnetic control and an adjustable ejector device, the problem of unsuitable ejector in injection molded cup production is solved, achieving efficient and automated demolding, and improving production efficiency and product quality.
Patent Information
- Application Number
- CN202520320585.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-02-27
AI Technical Summary
Existing ejector devices cannot adaptively adjust the ejector stroke according to the height and shape of the injection cup, resulting in poor demolding effect or product damage, affecting production efficiency and mold life.
A material ejection device comprising an electromagnetic block, a vertical rod, a spring, an adjusting rod, and a locking nut was designed. The movement of the vertical rod is controlled by electromagnetic attraction. Combined with an adjustable push plate and a rotating protrusion, automated demolding is achieved. The production environment is improved through a suction pipe and a purification chamber.
It achieves efficient and automated demolding, adapts to injection molded cups of different heights and shapes, reduces product and mold damage, improves production stability and quality, and reduces maintenance difficulty and cost.
Smart Images

Figure CN223790943U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection molded cup production technology, and in particular to a quick demolding ejector device for injection molded cup production. Background Technology
[0002] Injection molding is a method of shaping industrial products. Products are typically made using rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding and die casting. It is the main molding equipment used to make various shapes of plastic products from thermoplastic or thermosetting materials using plastic molds. Injection molding is achieved through injection molding machines and molds.
[0003] Currently, the stroke of ejector pins or ejector rods in existing ejector devices is often fixed, making it impossible to adaptively adjust to different injection cup heights and shapes. This may result in incomplete ejection for taller or specially shaped injection cups, affecting demolding performance; while for shorter injection cups, excessive ejection may cause product damage or mold wear.
[0004] Therefore, it is necessary to provide a quick demolding ejector device for injection molded cup production to solve the above-mentioned technical problems. Utility Model Content
[0005] This utility model provides a rapid demolding ejector device for injection molded cup production, which solves the problem that existing ejector devices cannot adaptively adjust the ejector stroke according to the height and shape of the injection molded cup, resulting in poor demolding effect and damage to the product and mold.
[0006] To solve the above-mentioned technical problems, the present invention provides a quick demolding ejector device for injection molded cup production, comprising: an injection molded cup mold, a partition plate fixedly connected inside the injection molded cup mold, an electromagnetic block fixedly connected to the top of the partition plate, a vertical rod slidably connected inside the electromagnetic block, the vertical rod passing through the partition plate and extending to the outside of the partition plate, a locking nut threadedly connected to the bottom of the vertical rod, the vertical rod passing through the locking nut and extending to the outside of the locking nut, a spring provided outside the vertical rod, a circular sleeve threadedly connected to the top of the vertical rod, a circular block fixedly connected to the top of the circular sleeve, an adjusting screw hole opened on the top of the circular block, an adjusting rod threadedly connected inside the adjusting screw hole, the adjusting rod passing through the adjusting screw hole and extending to the outside of the adjusting screw hole, a push plate fixedly connected to the top of the adjusting rod, a rotating protrusion fixedly connected to the outside of the push plate, and a mold cavity provided on the top of the injection molded cup mold.
[0007] Preferably, an air suction pipe is fixedly connected to the top of the partition, the air suction pipe passes through the partition and extends to the outside of the partition, a circular tube is fixedly connected to the bottom of the air suction pipe, a support column is fixedly connected to the bottom of the circular tube, the bottom of the support column is fixedly connected to the inside of the injection mold, an air supply pipe is fixedly connected to the outside of the circular tube, the air supply pipe passes through the injection mold and extends to the outside of the injection mold, a support plate is fixedly connected to one side of the injection mold, a purification box is fixedly connected to the top of the support plate, the other end of the air supply pipe is fixedly connected to the outside of the purification box, multiple layers of filter plates are provided inside the purification box, a suction pump is fixedly connected to the top of the purification box, an air extraction pipe is fixedly connected to the outside of the suction pump, and an air outlet pipe is fixedly connected to the outside of the suction pump.
[0008] Preferably, a spare parts box is fixedly connected to the other side of the injection mold.
[0009] Preferably, an identification plate is fixedly connected to the other side of the injection mold.
[0010] Preferably, the injection cup mold has a cover plate hinged to its exterior.
[0011] Preferably, the cover plate is provided with a transparent plate on its exterior.
[0012] Compared with related technologies, the ejector device for rapid demolding in injection molded cup production provided by this utility model has the following beneficial effects:
[0013] This invention provides a rapid demolding ejector device for injection molded cup production. When an electromagnetic block is energized, it attracts a circular block on a vertical rod, causing a spring to contract and store energy. After injection molding is completed and power is cut off, the spring releases its force, pushing the circular block and causing the push plate at the top of the adjusting rod to eject the injection molded cup, achieving efficient and automated demolding. When dealing with injection molded cups of different heights, the rotating protrusion on the outside of the push plate can be screwed to change the angle of the push plate, allowing the adjusting rod to be adjusted in the adjusting screw hole of the circular block, precisely adapting to different cup heights. This avoids damage to the product and mold caused by improper ejection, enhancing the versatility and adaptability of the ejector device, and ensuring product quality and production stability. Furthermore, the locking nut at the bottom of the vertical rod ensures the stability of the vertical rod position, preventing component displacement, while the circular sleeve facilitates subsequent spring replacement, improving the reliability and accuracy of the entire device. Attached Figure Description
[0014] Figure 1 A schematic diagram of a preferred embodiment of the ejector device for rapid demolding in injection molded cup production provided by this utility model;
[0015] Figure 2 for Figure 1 The diagram on the left side is shown.
[0016] Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below;
[0017] Figure 4 for Figure 1 The diagram shows a frontal sectional view of the structure.
[0018] Figure 5 for Figure 4 The enlarged schematic diagram of part B is shown.
[0019] The following are the labels in the diagram: 1. Injection cup mold, 2. Partition plate, 3. Electromagnetic block, 4. Vertical rod, 5. Locking nut, 6. Spring, 7. Circular sleeve, 8. Circular block, 9. Adjusting screw hole, 10. Adjusting rod, 11. Push bottom plate, 12. Rotating protrusion, 13. Mold cavity, 14. Suction pipe, 15. Circular tube, 16. Support column, 17. Air supply pipe, 18. Support plate, 19. Purification box, 20. Multi-layer filter plate, 21. Suction pump, 22. Air extraction pipe, 23. Air outlet pipe, 24. Spare parts box, 25. Sign, 26. Cover plate, 27. Transparent panel. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic diagram of a preferred embodiment of the ejector device for rapid demolding in injection molded cup production provided by this utility model; Figure 2 for Figure 1 The diagram on the left side is shown. Figure 3 for Figure 2 The enlarged schematic diagram of part A shown below; Figure 4 for Figure 1 The diagram shows a frontal sectional view of the structure. Figure 5 for Figure 4The enlarged schematic diagram of part B is shown. The quick demolding ejector device for injection molded cup production includes: an injection mold 1, a partition 2 fixedly connected inside the injection mold 1, an electromagnetic block 3 fixedly connected to the top of the partition 2, a vertical rod 4 slidably connected inside the electromagnetic block 3, the vertical rod 4 passing through the partition 2 and extending to the outside of the partition 2, a locking nut 5 threadedly connected to the bottom of the vertical rod 4, the vertical rod 4 passing through the locking nut 5 and extending to the outside of the locking nut 5, a spring 6 provided on the outside of the vertical rod 4, a circular sleeve 7 threadedly connected to the top of the vertical rod 4, a circular block 8 fixedly connected to the top of the circular sleeve 7, an adjusting screw hole 9 opened on the top of the circular block 8, an adjusting rod 10 threadedly connected inside the adjusting screw hole 9, the adjusting rod 10 passing through the adjusting screw hole 9 and extending to the outside of the adjusting screw hole 9, a push plate 11 fixedly connected to the top of the adjusting rod 10, a rotating protrusion 12 fixedly connected to the outside of the push plate 11, and a mold cavity 13 provided on the top of the injection mold 1.
[0022] The electromagnetic block 3 is energized to cause the vertical rod 4 to slide down and compress the spring 6 to store energy, thus initiating demolding. The locking nut 5 stabilizes the vertical rod 4 and limits its position. The spring 6 releases energy and drives the push plate 11 to move upward through the circular sleeve 7, circular block 8, and adjusting rod 10, ejecting the injection cup. The rotating protrusion 12 can change the height position of the push plate 11. All components work together to ensure that the injection molding is not disturbed, flexibly adapting to various injection cups, improving production efficiency and quality, and combining convenient maintenance and reliable operation to ensure stable and efficient production.
[0023] A suction pipe 14 is fixedly connected to the top of the partition 2. The suction pipe 14 passes through the partition 2 and extends to the outside of the partition 2. A circular pipe 15 is fixedly connected to the bottom of the suction pipe 14. A support column 16 is fixedly connected to the bottom of the circular pipe 15. The bottom of the support column 16 is fixedly connected to the inside of the injection mold 1. An air supply pipe 17 is fixedly connected to the outside of the circular pipe 15. The air supply pipe 17 passes through the injection mold 1 and extends to the outside of the injection mold 1. A support plate 18 is fixedly connected to one side of the injection mold 1. A purification box 19 is fixedly connected to the top of the support plate 18. The other end of the air supply pipe 17 is fixedly connected to the outside of the purification box 19. A multi-layer filter plate 20 is provided inside the purification box 19. A suction pump 21 is fixedly connected to the top of the purification box 19. An air extraction pipe 22 is fixedly connected to the outside of the suction pump 21. An air outlet pipe 23 is fixedly connected to the outside of the suction pump 21.
[0024] The suction pipe 14, fixed on the partition 2, collects gas. It passes through the partition 2 and connects to the circular pipe 15 at the bottom. The circular pipe 15 is secured inside the injection mold 1 by the support column 16. The externally connected gas delivery pipe 17 transports the collected gas to the outside of the injection mold 1. A purification box 19 on a support plate 18 on one side of the injection mold 1 receives the gas from the delivery pipe 17. The multi-layer filter plate 20 inside the purification box 19 effectively removes impurities and harmful substances from the gas. The suction pump 21 at the top draws the filtered gas from inside the purification box 19 through the suction pipe 22 and discharges the purified gas through the outlet pipe 23. This effectively improves the air quality during the injection molded cup production process, reduces the impact of harmful gases on the health of operators, maintains a clean production environment, ensures the stability and safety of the production process, avoids product quality problems caused by gas pollution, and improves overall production efficiency and product quality.
[0025] A spare parts box 24 is fixedly connected to the other side of the injection cup mold 1.
[0026] Spare parts box 24 is used to store spare parts, small tools, and maintenance supplies for the injection cup mold 1. This allows for quick access and replacement of damaged parts, reducing downtime for maintenance, and also stores cleaning and maintenance tools to help maintain the mold in good condition.
[0027] A sign 25 is fixedly connected to the other side of the injection mold 1.
[0028] The purpose of the sign 25 is to clearly display key information about the injection mold 1, such as model, specifications, production date, production batch, and applicable injection molding process parameters.
[0029] The injection cup mold 1 is externally hinged with a cover plate 26.
[0030] The cover plate 26 can cover the injection cup mold 1 when it is in use, so as to prevent dust, debris and other objects from falling into the mold and affecting its precision and normal use.
[0031] A viewing plate 27 is provided on the outside of the cover plate 26.
[0032] The viewing panel 27 on the cover plate 26 allows operators to observe the internal condition of the injection cup mold 1 without opening the cover plate, promptly detect abnormalities, ensure stable and efficient production, and reduce dust entry.
[0033] The working principle of the rapid demolding ejector device for injection molded cup production provided by this utility model is as follows: First, before injection begins, the electromagnetic block 3 is de-energized, the spring 6 is naturally extended, and the adjusting rod 10 and the push plate 11 are in their lowest positions, not affecting the injection operation. When injection starts, the electromagnetic block 3 is energized to generate a magnetic field that attracts the circular block 8. The circular block 8 drives the vertical rod 4 to slide downwards against the elastic force of the spring 6, compressing the spring 6, and the device enters the ready state. At this time, the locking nut 5 is tightly fixed on the vertical rod 4, ensuring that the vertical rod 4 moves stably under the attraction of the electromagnetic block 3, while the circular sleeve 7 is also tightly connected to the top of the vertical rod 4, maintaining the integrity of the entire structure and providing a reliable foundation for the subsequent demolding action. Then, after injection is completed, the electromagnetic block 3 is de-energized, and the spring 6 releases its elastic potential energy to push the circular block 8 upwards, driving the adjusting rod 10 and the push plate 11 to eject the injection molded cup. When encountering different injection molded cups, the operator can adjust the ejection state of the push plate 11 by turning the rotating protrusion 12. During long-term use, if spring 6 becomes fatigued or damaged and needs replacement, the circular sleeve 7 comes into play. By rotating the circular sleeve 7, the vertical rod 4 can be easily disassembled, allowing for easy replacement of spring 6. This ensures the device remains in good working order, without affecting production progress or product quality. Finally, after demolding, the device returns to its initial state under the action of spring 6, and all components return to their positions, ready for the next cycle. This enables the entire injection cup demolding device to operate efficiently and stably, continuously solving demolding problems caused by differences in the height and shape of injection cups. It significantly improves production efficiency and product quality, reduces the difficulty and cost of equipment maintenance, and creates greater economic benefits and competitive advantages for injection molding manufacturers.
[0034] Compared with related technologies, the ejector device for rapid demolding in injection molded cup production provided by this utility model has the following beneficial effects:
[0035] This invention provides a rapid demolding ejector device for injection molded cup production. When the electromagnetic block 3 is energized, it attracts the circular block 8 on the vertical rod 4, causing the spring 6 to contract and store energy. After injection molding is completed and the power is cut off, the spring 6 releases its elastic force, pushing the circular block 8 and causing the push plate 11 at the top of the adjusting rod 10 to eject the injection molded cup, achieving efficient and automated demolding. When dealing with injection molded cups of different heights, the rotating protrusion 12 on the outside of the push plate 11 can be twisted to change the angle of the push plate 11, allowing the adjusting rod 10 to adjust its position in the adjusting screw hole 9 of the circular block 8, precisely adapting to different cup heights. This avoids damage to the product and mold caused by improper ejection, enhancing the versatility and adaptability of the ejector device, and ensuring product quality and production stability. Furthermore, the locking nut 5 at the bottom of the vertical rod 4 ensures the stability of the vertical rod 4, preventing component displacement, while the circular sleeve 7 provides convenience for subsequent replacement of the spring 6, improving the reliability and accuracy of the entire device.
[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A rapid demolding ejector device for injection molded cup production, characterized in that, include: An injection molded cup mold includes an internal partition plate, an electromagnetic block fixedly connected to the top of the partition plate, a vertical rod slidably connected inside the electromagnetic block, the vertical rod passing through the partition plate and extending to the outside of the partition plate, a locking nut threadedly connected to the bottom of the vertical rod, the vertical rod passing through the locking nut and extending to the outside of the locking nut, a spring disposed outside the vertical rod, a circular sleeve threadedly connected to the top of the vertical rod, a circular block fixedly connected to the top of the circular sleeve, an adjusting screw hole opened on the top of the circular block, an adjusting rod threadedly connected inside the adjusting screw hole, the adjusting rod passing through the adjusting screw hole and extending to the outside of the adjusting screw hole, a push plate fixedly connected to the top of the adjusting rod, a rotating protrusion fixedly connected to the outside of the push plate, and a mold cavity disposed on the top of the injection molded cup mold.
2. The ejector device for rapid demolding in injection molded cup production according to claim 1, characterized in that, An air intake pipe is fixedly connected to the top of the partition, the air intake pipe passes through the partition and extends to the outside of the partition, a circular tube is fixedly connected to the bottom of the air intake pipe, a support column is fixedly connected to the bottom of the circular tube, the bottom of the support column is fixedly connected to the inside of the injection mold, an air supply pipe is fixedly connected to the outside of the circular tube, the air supply pipe passes through the injection mold and extends to the outside of the injection mold, a support plate is fixedly connected to one side of the injection mold, a purification box is fixedly connected to the top of the support plate, the other end of the air supply pipe is fixedly connected to the outside of the purification box, multiple layers of filter plates are arranged inside the purification box, a suction pump is fixedly connected to the top of the purification box, an air extraction pipe is fixedly connected to the outside of the suction pump, and an air outlet pipe is fixedly connected to the outside of the suction pump.
3. The ejector device for rapid demolding in injection molded cup production according to claim 1, characterized in that, A spare parts box is fixedly connected to the other side of the injection molded cup.
4. The ejector device for rapid demolding in injection molded cup production according to claim 1, characterized in that, An identification plate is fixedly connected to the other side of the injection molded cup.
5. The ejector device for rapid demolding in injection molded cup production according to claim 1, characterized in that, The injection cup mold is externally hinged with a cover plate.
6. The ejector device for rapid demolding in injection molded cup production according to claim 5, characterized in that, A viewing panel is provided on the outside of the cover plate.