Rapid mold changing injection molding machine based on electromagnetic adsorption
By using an electromagnetic adsorption-based rapid mold-changing injection molding machine to fix the mold with a turntable and an electromagnet plate, the problems of long mold replacement time and inflexible masterbatch switching are solved, realizing rapid mold replacement and flexible masterbatch switching, thus improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-24
- Publication Date
- 2026-03-03
AI Technical Summary
Traditional injection molding production involves time-consuming mold changes, and the single feed port design limits the flexibility of masterbatch switching, making it difficult to adapt to the needs of multi-variety, small-batch production.
The rapid mold-changing injection molding machine based on electromagnetic adsorption uses multiple injection stations and multiple feed ports on the turntable, combined with an electromagnetic plate to fix the mold, to achieve rapid mold replacement and flexible switching of masterbatch.
It enables rapid mold replacement, reduces downtime, improves production efficiency, simplifies operation, supports flexible switching of various masterbatches, and adapts to complex production needs.
Smart Images

Figure CN223961617U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection molding equipment technology, and in particular to a fast mold-changing injection molding machine based on electromagnetic adsorption. Background Technology
[0002] In traditional injection molding production, molds are typically fixed to the injection molding machine with bolts and nuts. When changing molds, the bolts must be removed, the positioning adjusted, and then retightened, a process that can take several hours and severely impacts production efficiency. Furthermore, the single feed port design limits the flexibility of masterbatch switching, making it difficult to adapt to the needs of multi-variety, small-batch production. While modular mold designs exist in existing technologies, they still rely on mechanical locking structures, which are complex to operate and cannot achieve rapid switching. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a fast mold changing injection molding machine based on electromagnetic adsorption that allows for quick replacement of multiple molds.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A rapid mold-changing injection molding machine based on electromagnetic adsorption is provided, comprising:
[0005] A turntable with multiple injection stations arranged in a circular array on its top; the injection stations are used to place molds.
[0006] The screw of an injection molding machine is used to feed material into the mold.
[0007] An electromagnet plate is placed between the wheel and the injection molding machine screw, and generates magnetic force to fix the mold by energizing it; the injection port end of the injection molding machine screw passes through the electromagnet plate to feed material to the mold.
[0008] Furthermore, in the aforementioned rapid mold-changing injection molding machine based on electromagnetic adsorption, the turntable is a rotatable circular or rectangular structure with injection stations evenly distributed along its edges, and each injection station is equipped with a mold positioning slot.
[0009] Furthermore, in the aforementioned rapid mold-changing injection molding machine based on electromagnetic adsorption, the injection molding machine screw is provided with multiple feed ports.
[0010] Furthermore, in the aforementioned rapid mold-changing injection molding machine based on electromagnetic adsorption, the injection molding machine screw is provided with two feed ports.
[0011] Furthermore, in the aforementioned rapid mold-changing injection molding machine based on electromagnetic adsorption, each of the aforementioned feed ports corresponds to an independent feeding channel.
[0012] Furthermore, in the aforementioned rapid mold-changing injection molding machine based on electromagnetic adsorption, the feeding channel is equipped with a pneumatically or electrically driven valve.
[0013] Furthermore, in the aforementioned rapid mold-changing injection molding machine based on electromagnetic adsorption, there are four injection stations, and each injection station corresponds to a mold.
[0014] Furthermore, in the aforementioned rapid mold-changing injection molding machine based on electromagnetic adsorption, there are six injection stations, and each injection station corresponds to one mold.
[0015] Furthermore, in the aforementioned rapid mold-changing injection molding machine based on electromagnetic adsorption, the turntable is driven to rotate by a drive mechanism, which includes a servo motor and a reducer.
[0016] Furthermore, in the aforementioned rapid mold-changing injection molding machine based on electromagnetic adsorption, each injection station is equipped with an infrared sensor at its edge. The infrared sensor is used to detect whether the mold is aligned with the injection molding machine screw.
[0017] The beneficial effects of this utility model are as follows:
[0018] This invention relates to a rapid mold-changing injection molding machine based on electromagnetic adsorption. Multiple different molds can be pre-installed onto the injection molding machine's disc according to the production plan. The required mold is then rotated to the screw injection port, and energized to magnetize the electromagnet plate, thus fixing the mold in place. When a mold needs to be changed, the electromagnet plate is de-energized, the disc is rotated to adjust the mold, and the above steps are repeated to complete the change. This invention eliminates the need for traditional mold changes involving bolt and nut disassembly, significantly reducing worker workload and improving production efficiency. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of the rapid mold-changing injection molding machine based on electromagnetic adsorption according to this utility model;
[0020] Figure 2 This is a side view of the rapid mold-changing injection molding machine based on electromagnetic adsorption according to this utility model;
[0021] Label Explanation:
[0022] 1. Turntable; 2. Mold; 3. Injection molding machine screw; 31. Injection port; 32. Feed port; 4. Electromagnetic plate. Detailed Implementation
[0023] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.
[0024] Please see Figure 1 and Figure 2 This utility model provides a rapid mold-changing injection molding machine based on electromagnetic adsorption, comprising:
[0025] Turntable 1 has multiple injection stations arranged in a circular array on its top; the injection stations are used to place molds 2.
[0026] The injection molding machine screw 3 is used to feed material to the mold 2;
[0027] An electromagnet plate 4 is positioned between the wheel and the injection molding machine screw 3, and generates magnetic force to fix the mold 2 by energizing it; the injection port end 31 of the injection molding machine screw 3 passes through the electromagnet plate 4 to supply material to the mold 2.
[0028] The above-described rapid mold-changing injection molding machine based on electromagnetic adsorption operates as follows: First, multiple different molds 2 are mounted on a turntable (the turntable can be energized to generate magnetic force to fix the molds). The mold 2 required for production is rotated to the screw injection port 31. Then, power is applied to magnetize the electromagnet plate 4 (fixed on the frame, height adjustable), thereby fixing the upper mold of the corresponding mold 2 for normal production. When mold 2 needs to be changed, the electromagnet plate 4 is de-energized, and the turntable is rotated to adjust the required mold 2 to the screw injection port 31, allowing for rapid replacement between different molds 2. When the molds 2 have different heights, the electromagnet plate 4 can be moved to adjust to a suitable height. If the masterbatch needs to be changed, different feed ports 32 can be selected directly for replacement and filling.
[0029] Furthermore, in the aforementioned rapid mold-changing injection molding machine based on electromagnetic adsorption, the turntable 1 is a rotatable circular structure with injection stations evenly distributed along its edge, and each injection station is provided with a positioning slot for the mold 2.
[0030] Furthermore, in the above-mentioned rapid mold change injection molding machine based on electromagnetic adsorption, the injection molding machine screw 3 is provided with multiple feed ports 32.
[0031] As described above, the design of multiple molds with 2 pre-installed parts and multiple feed ports with 32 supports quick switching of product types and masterbatches.
[0032] Furthermore, in the aforementioned rapid mold-changing injection molding machine based on electromagnetic adsorption, the injection molding machine screw 3 is provided with two feed ports 32.
[0033] Furthermore, in the aforementioned rapid mold-changing injection molding machine based on electromagnetic adsorption, each of the feed ports 32 corresponds to an independent feeding channel.
[0034] Furthermore, in the aforementioned rapid mold-changing injection molding machine based on electromagnetic adsorption, the feeding channel is equipped with a pneumatically or electrically driven valve.
[0035] As described above, when the masterbatch needs to be changed, a switching command can be sent through the controller, and the valve of the feeding channel will close the current feeding channel and open the corresponding feeding channel that needs to be opened.
[0036] Furthermore, in the above-mentioned rapid mold-changing injection molding machine based on electromagnetic adsorption, there are four injection stations, and each injection station corresponds to a mold 2.
[0037] Furthermore, in the above-mentioned rapid mold-changing injection molding machine based on electromagnetic adsorption, there are six injection stations, and each injection station corresponds to a mold 2.
[0038] Furthermore, in the aforementioned rapid mold-changing injection molding machine based on electromagnetic adsorption, the turntable 1 is driven to rotate by a drive mechanism, which includes a servo motor and a reducer.
[0039] Furthermore, in the above-mentioned rapid mold change injection molding machine based on electromagnetic adsorption, each injection station is equipped with an infrared sensor at its edge. The infrared sensor is used to detect whether the mold 2 is aligned with the injection molding machine screw 3.
[0040] As described above, the infrared sensor provides a way to align the mold 2 with the injection molding machine screw 3.
[0041] Example 1
[0042] Please see Figure 1 and Figure 2 A rapid mold-changing injection molding machine based on electromagnetic adsorption, comprising:
[0043] Turntable 1 has multiple injection stations arranged in a circular array on its top; the injection stations are used to place molds 2.
[0044] The injection molding machine screw 3 is used to feed material to the mold 2;
[0045] An electromagnet plate 4 is positioned between the wheel and the injection molding machine screw 3, and generates magnetic force to fix the mold 2 by energizing it; the injection port end 31 of the injection molding machine screw 3 passes through the electromagnet plate 4 to supply material to the mold 2.
[0046] The turntable 1 is a rotatable circular structure with injection molding stations evenly distributed along its edge. Each injection molding station is equipped with a positioning slot for a mold 2. There are four injection molding stations, and each injection molding station corresponds to one mold 2.
[0047] The injection molding machine screw 3 has two feed ports 32. Each feed port 32 corresponds to an independent feeding channel. The feeding channel is equipped with a pneumatic or electric driven valve.
[0048] The turntable 1 is driven to rotate by a drive mechanism, which includes a servo motor and a reducer. Each injection molding station is equipped with an infrared sensor at its edge, which is used to detect whether the mold 2 is aligned with the injection molding machine screw 3.
[0049] In this invention, a rapid mold-changing injection molding machine based on electromagnetic adsorption, the turntable generates magnetic force to fix the mold when energized. When the target mold rotates to below the screw injection port, a position sensor triggers the electromagnet plate to be energized, adsorbing the upper mold. During operation, the lower mold is adsorbed by the turntable, and the upper mold is adsorbed by the electromagnet plate, achieving rapid positioning. When mold replacement is required, the electromagnet plate is de-energized, the turntable is rotated to adjust the mold, and the above steps are repeated to complete the replacement.
[0050] The electromagnetic adsorption-based rapid mold-changing injection molding machine of this utility model has the following advantages: (1) rapid mold replacement, reducing downtime and improving production efficiency; (2) electromagnetic adsorption fixing replaces traditional bolt connection, making operation simple and highly stable; (3) the multi-inlet design supports flexible switching of various masterbatches, adapting to complex production needs. This utility model is suitable for multi-variety, small-batch production scenarios of injection molded parts, and is of great significance for improving enterprise competitiveness.
[0051] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A rapid mold-changing injection molding machine based on electromagnetic adsorption, characterized in that, include: A turntable with multiple injection stations arranged in a circular array on its top; the injection stations are used to place molds. The screw of an injection molding machine is used to feed material into the mold. An electromagnet plate is placed between the wheel and the injection molding machine screw, and generates magnetic force to fix the mold by energizing it; the injection port end of the injection molding machine screw passes through the electromagnet plate to feed material to the mold.
2. The rapid mold-changing injection molding machine based on electromagnetic adsorption according to claim 1, characterized in that, The turntable is a rotatable circular or rectangular structure with injection stations evenly distributed along its edge, and each injection station is equipped with a mold positioning slot.
3. The rapid mold-changing injection molding machine based on electromagnetic adsorption according to claim 1, characterized in that, The injection molding machine screw is equipped with multiple feed ports.
4. The rapid mold-changing injection molding machine based on electromagnetic adsorption according to claim 1, characterized in that, The injection molding machine screw has two feed ports.
5. The rapid mold-changing injection molding machine based on electromagnetic adsorption according to claim 4, characterized in that, Each of the aforementioned inlets corresponds to an independent feeding channel.
6. The rapid mold-changing injection molding machine based on electromagnetic adsorption according to claim 5, characterized in that, The feeding channel is equipped with pneumatic or electric driven valves.
7. The rapid mold-changing injection molding machine based on electromagnetic adsorption according to claim 1, characterized in that, There are four injection molding stations, and each injection molding station corresponds to one mold.
8. The rapid mold-changing injection molding machine based on electromagnetic adsorption according to claim 1, characterized in that, There are six injection molding stations, and each injection molding station corresponds to one mold.
9. The rapid mold-changing injection molding machine based on electromagnetic adsorption according to claim 1, characterized in that, The turntable is driven to rotate by a drive mechanism, which includes a servo motor and a reducer.
10. The rapid mold-changing injection molding machine based on electromagnetic adsorption according to claim 1, characterized in that, Each injection molding station is equipped with an infrared sensor at its edge, which is used to detect whether the mold is aligned with the injection molding machine screw.