Single-color and double-color EVA injection mechanism

Abstract

The utility model relates to a single-bicolor EVA injection mechanism, which comprises an injection device and a mold closing device, the injection device comprises an injection base, a rotating device is arranged on the injection base, a bicolor injection component is arranged on the rotating device, the mold closing device comprises a mold closing frame, an upper mold and a lower mold are arranged on the mold closing frame, and the upper mold and the lower mold are arranged on the mold closing frame. And a detachable partition template is arranged between the upper die and the lower die. According to the single-color and double-color EVA injection mechanism, two injection guns are adopted for injecting materials at the same time, so that materials with two colors are molded at the same time, and the stability of material combination can be guaranteed; due to the design of the lifting mechanism, the influence of translation of the injection gun on the mold station is avoided; in the forming process, due to the fact that the partition template is adopted, materials in two colors can be formed in a separated mode. And after the color separation plate is pulled away, the formed materials with two colors are combined again, color mixing can be avoided, the structural design is reasonable, and the production efficiency is high.

Description

Technical Field

[0001] The utility model specifically relates to a single-color or double-color EVA injection mechanism. Background Art

[0002] EVA soles are made of EVA material. They have high resilience and tensile strength, high toughness, and excellent shock absorption and cushioning properties. They also offer excellent thermal insulation and low-temperature performance, making them resistant to extreme cold. They have closed cells for excellent sound insulation, a closed cell structure, are non-absorbent, moisture-proof, and water-resistant. They are also resistant to corrosion from seawater, grease, acids, alkalis, and other chemicals. They are also antibacterial, non-toxic, odorless, and non-polluting.

[0003] Currently, existing EVA injection molding machines on the market consist of a mold station, a spray gun, a heating and cooling system, and an automatic control circuit system. These machines automatically operate to produce finished shoes. Because the molding process is performed in a single step, the shoe samples are limited to a single color. While mold design allows for a variety of shoe designs, the monotony of the color is a drawback of existing single-color injection molding machines. Utility Model Content

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a single-color and double-color EVA injection mechanism.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a single-color or double-color EVA injection mechanism, including an injection device and a clamping device, the injection device includes an injection base, a rotating device is installed on the injection base, a double-color injection assembly is installed on the rotating device, the clamping device includes a clamping frame, an upper mold and a lower mold are provided on the clamping frame, and a detachable partition plate is provided between the upper mold and the lower mold.

[0006] Preferably, the rotating device includes a rotating fixed plate and a rotating movable plate, the rotating fixed plate is installed on the injection base, the rotating movable plate is located directly above the rotating fixed plate, the rotating fixed plate and one end of the rotating movable plate are rotatably connected through a rotating shaft, and a rotating oil cylinder is provided at the bottom of the other end of the rotating fixed plate, the piston end of the rotating oil cylinder extends upward from the rotating fixed plate and is rotatably connected to the bottom of the rotating movable plate.

[0007] Preferably, a connecting plate is provided on the side of the partition plate, the bottom of the connecting plate is installed on an in-and-out frame, a lifting cylinder for controlling the lifting of the in-and-out frame is installed on the mold closing frame, and an in-and-out cylinder for controlling the horizontal movement of the connecting plate on the in-and-out frame is provided on the in-and-out frame.

[0008] Preferably, the two-color injection assembly includes multiple injection tubes, and the multiple injection tubes are respectively connected to respective injection heads.

[0009] Preferably, the injection heads are arranged in pairs of two, and the injection heads in the pair of two are vertically arranged up and down, the injection head located above is aligned with the feed port of the upper mold, and the injection head located below is aligned with the feed port of the lower mold.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the single-color and double-color EVA injection mechanism adopts two shooting guns to inject materials at the same time, so that the two color materials are molded at the same time, which can ensure the stability of the material combination; due to the design of the lifting mechanism, the influence of the translation of the shooting gun on the mold station is avoided; during the molding process, due to the use of a partition plate, the two color materials can be molded separately; after the partition plate is pulled out, the molded two color materials are merged again, which can avoid color mixing, the structural design is reasonable, and the production efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of an embodiment of the present utility model.

[0012] Figure 2 It is a side view of an embodiment of the present utility model.

[0013] Markings in the figure: 1. Injection device; 2. Upper mold; 3. Lower mold; 4. Partition plate; 5. Clamping frame; 6. Rotating fixed plate; 7. Rotating movable plate; 8. Injection base; 9. Rotating shaft; 10. Rotating cylinder; 11. Connecting plate; 12. Inlet and outlet frame; 13. Inlet and outlet cylinder; 14. Injection tube; 15. Injection head; 16. Lifting cylinder. DETAILED DESCRIPTION

[0014] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below with reference to the accompanying drawings for detailed description.

[0015] like Figure 1 As shown, a single-color and double-color EVA injection mechanism includes an injection device 1 and a clamping device, the injection device includes an injection base 8, the injection base 8 is used to be installed on an injection molding machine (not shown in the figure), the injection molding machine is a conventional existing technology and is not described in detail here, a rotating device is installed on the injection base, and a double-color injection assembly is installed on the rotating device, the clamping device includes a clamping frame 5, an upper mold 2 and a lower mold 3 are provided on the clamping frame 5, and a detachable partition plate 4 is provided between the upper mold 2 and the lower mold 3.

[0016] In this embodiment, the rotating device includes a rotating fixed plate 6 and a rotating movable plate 7. The rotating fixed plate 7 is installed on the injection base 8. The rotating movable plate 7 is located directly above the rotating fixed plate 6. One end of the rotating fixed plate 6 and the rotating movable plate 7 are rotatably connected through a rotating shaft 9. A rotating cylinder 10 is provided at the bottom of the other end of the rotating fixed plate 6. The piston end of the rotating cylinder 10 extends upward from the rotating fixed plate 6 and is rotatably connected to the bottom of the rotating movable plate 7.

[0017] In this embodiment, a connecting plate 11 is provided on the side of the partition template 4, and the bottom of the connecting plate 11 is installed on an in-and-out frame 12. A lifting cylinder 16 for controlling the lifting and lowering of the in-and-out frame 12 is installed on the mold closing frame, and an in-and-out cylinder 13 for controlling the horizontal movement of the connecting plate 11 on the in-and-out frame 12 is provided on the in-and-out frame 12.

[0018] In the closed mold pressurized state, the two colors are injected into the upper and lower molds respectively through the injection double-color injection assembly. After the first vulcanization, the shooting tube retreats, the rotating plate tilts the shooting tube, and the lifting cylinder controls the in-and-out frame to rise. Then the in-and-out cylinder controls the connecting plate to move horizontally out from between the upper and lower molds. Then the lifting cylinder descends to make the partition plate fall. At this time, the upper and lower molds with the partition plate pulled out are closed again and pressurized, and vulcanized and finalized.

[0019] During the molding process, the use of a partition plate allows the two color materials to be molded separately; after the partition plate is removed, the molded two color materials are merged again to avoid color mixing. The structural design is reasonable and the production efficiency is high.

[0020] In this embodiment, the dual-color injection assembly includes a plurality of injection tubes 14 , and the plurality of injection tubes 14 are respectively connected to respective injection heads 15 .

[0021] In this embodiment, the injection heads 15 are arranged in pairs, and the injection heads 15 in the pairs are vertically arranged up and down. The injection heads 15 located above are aligned with the feed port of the upper mold 2, and the injection heads 15 located below are aligned with the feed port of the lower mold 3.

[0022] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification, equalization change and modification made to the above embodiment by any technician familiar with the field without departing from the content of the technical solution of the present invention based on the technical essence of the present invention shall fall within the scope of the present invention.

Claims

1. A single or double color EVA injection mechanism, characterized by: It includes an injection device and a clamping device, the injection device includes an injection base, a rotating device is installed on the injection base, a two-color injection assembly is installed on the rotating device, the clamping device includes a clamping frame, an upper mold and a lower mold are provided on the clamping frame, and a detachable partition plate is provided between the upper mold and the lower mold.

2. The single-color or double-color EVA injection mechanism according to claim 1, characterized in that: The rotating device includes a rotating fixed plate and a rotating movable plate. The rotating fixed plate is installed on the injection base. The rotating movable plate is located directly above the rotating fixed plate. One end of the rotating fixed plate and the rotating movable plate are rotatably connected through a rotating shaft. A rotating oil cylinder is provided at the bottom of the other end of the rotating fixed plate. The piston end of the rotating oil cylinder extends upward from the rotating fixed plate and is rotatably connected to the bottom of the rotating movable plate.

3. The single-color or double-color EVA injection mechanism according to claim 1, characterized in that: A connecting plate is provided on the side of the partition plate, the bottom of the connecting plate is installed on an in-and-out frame, a lifting cylinder for controlling the lifting of the in-and-out frame is installed on the mold clamping frame, and an in-and-out cylinder for controlling the horizontal movement of the connecting plate on the in-and-out frame is provided on the in-and-out frame.

4. The single-color or double-color EVA injection mechanism according to claim 1, characterized in that: The dual-color injection assembly includes multiple injection tubes, which are respectively connected to respective injection heads.

5. The single-color or double-color EVA injection mechanism according to claim 4, characterized in that: The injection heads are arranged in pairs of two, and the injection heads in the pair of two are vertically arranged up and down, the injection head located on the top is aligned with the feed port of the upper mold, and the injection head located on the bottom is aligned with the feed port of the lower mold.

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