Iron sheet positioning mechanism of plastic-coated iron injection mold

Abstract

The utility model relates to an iron sheet positioning mechanism of a plastic-coated iron injection mold, which comprises a lower mold core, a forming groove and a forming lug are arranged on the lower mold core, a demolding ejector rod and an iron sheet positioning support plate are connected in the lower mold core in a sliding manner, a positioning groove is arranged on the iron sheet positioning support plate, and the forming lug is arranged in the positioning groove. Iron sheet positioning columns are arranged on the portions, located on the two sides of the forming groove, of the lower mold core, a threaded column and a gear transmission assembly are arranged at the lower end of the lower mold core, an annular groove is formed in the upper side of the threaded column, the lower end of the iron sheet positioning supporting plate is slidably connected with the annular groove, and a driven gear is fixedly connected to the lower end of the threaded column. And the driven gear is meshed with an output gear of the gear transmission assembly. The mold has the beneficial effects that the placement height of the iron sheet in the middle of the connecting sheet can be adjusted, the mold is suitable for injection molding processing of connecting sheets with different specifications, the application range is wide, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to an iron sheet positioning mechanism for a plastic-coated iron injection mold. Background Art

[0002] Plastic-coated iron injection products are now common injection products. During the processing of plastic-coated iron products, the iron sheet needs to be positioned and placed on the lower mold core for mold closing and injection molding. The existing connecting piece products are made of multiple iron sheets positioned and injection molded. The iron sheet in the middle is in the shape of a square. After injection molding, the plastic part will wrap all the iron sheets into a whole.

[0003] For the molding of plastic-coated iron workpieces, an injection mold for core plastic coating with a current publication number of CN219968698U is provided, comprising an upper mold frame and a lower mold frame, an upper mold core and a lower mold core stacked up and down are installed between the upper mold frame and the lower mold frame, two mold cavities are arranged side by side between the upper mold core and the lower mold core, two bosses are symmetrically arranged on both sides of the upper end of the lower mold core, an elongated through hole is provided between the middle parts of the two bosses at the upper end of the lower mold core, the inside of the elongated through hole is divided into an intermediate plug hole and two side plug holes by two partitions, an intermediate molding block is inserted into the intermediate plug hole, two first molding grooves are symmetrically provided on both sides of the upper end of the intermediate block, a side molding block is inserted into the side plug hole, a second molding groove is provided in the middle part of the upper end of the side molding block, the intermediate molding block and the lower mold frame are fixed by fasteners, and two end face core pulling devices are symmetrically installed on the front and rear sides of the lower mold core at the upper end of the lower mold frame.

[0004] The connecting pieces have various specifications. The heights of the middle iron pieces of connecting pieces of different specifications are different, and the thickness of the plastic on the upper and lower sides of the middle iron piece is different. The existing injection mold can only adapt to the injection molding processing of plastic-coated iron connecting pieces of a single specification, and the scope of application is small. Therefore, a plastic-coated iron injection mold iron piece positioning mechanism is needed. Utility Model Content

[0005] The utility model aims to provide an iron sheet positioning mechanism for a plastic-coated iron injection mold, which can adjust the placement height of the iron sheet in the middle of the connecting sheet, adapt to the injection molding processing of connecting sheets of different specifications, have a wide range of applications, and reduce production costs.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a plastic-coated iron injection mold iron sheet positioning mechanism, including a lower mold core, the lower mold core is provided with a molding groove and a molding protrusion, the lower mold core is slidably connected with a demolding push rod and an iron sheet positioning support plate, the iron sheet positioning support plate is provided with a positioning groove, the lower mold core is provided with iron sheet positioning columns on both sides of the molding groove, the lower end of the lower mold core is provided with a threaded column and a gear transmission assembly, the upper side of the threaded column is provided with an annular groove, the lower end of the iron sheet positioning support plate is slidably connected to the annular groove, the lower end of the threaded column is fixedly connected with a driven gear, and the driven gear is meshed with the output gear of the gear transmission assembly.

[0007] Furthermore, a magnet is fixedly connected to the side wall of the positioning groove on the iron sheet positioning support plate.

[0008] Furthermore, the iron sheet positioning column is fixedly connected to the lower die core, the threaded column is threadedly connected to the lower die core, and the driven gear is fixedly connected to the threaded column.

[0009] Furthermore, each gear of the gear transmission assembly is rotatably connected to the lower die core, and the input gear of the gear transmission assembly is exposed to the outside of the lower die core.

[0010] The beneficial effects of the utility model are as follows: through the coordinated use of the threaded column, the driven gear and the gear transmission assembly, the placement height of the iron sheet in the middle of the connecting piece can be adjusted, and the injection molding processing of connecting pieces of different specifications can be adapted. The scope of application is relatively large, and the production cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a first-view schematic diagram of an iron sheet positioning mechanism for a plastic-coated iron injection mold of the utility model.

[0012] Figure 2 This is a schematic diagram from a second viewing angle of an iron sheet positioning mechanism for a plastic-coated iron injection mold of the utility model.

[0013] Figure 3 The utility model is a schematic diagram of a threaded column of an iron sheet positioning mechanism of a plastic-coated iron injection mold.

[0014] Figure 4 It is an enlarged schematic diagram of an iron sheet positioning support plate of an iron sheet positioning mechanism of a plastic-coated iron injection mold of the utility model.

[0015] In the figure: 1, lower die core; 101, forming groove; 102, forming protrusion; 2, demoulding ejector pin; 3, iron sheet positioning support plate; 301, positioning groove; 302, magnet; 4, iron sheet positioning column; 5, threaded column; 501, annular groove; 502, driven gear; 6, gear transmission assembly. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0017] refer to Figure 1-Figure 4 The iron sheet positioning mechanism of a plastic-coated iron injection mold shown in the figure includes a lower mold core 1, on which a molding groove 101 and a molding protrusion 102 are provided, and a demoulding ejector rod 2 and an iron sheet positioning support plate 3 are slidably connected in the lower mold core 1, and a positioning groove 301 is opened on the iron sheet positioning support plate 3, and iron sheet positioning columns 4 are arranged on both sides of the molding groove 101 on the lower mold core 1, and a threaded column 5 and a gear transmission assembly 6 are arranged at the lower end of the lower mold core 1, and an annular groove 501 is opened on the upper side of the threaded column 5, and the lower end of the iron sheet positioning support plate 3 is slidably connected to the annular groove 501, and the lower end of the threaded column 5 is fixedly connected to a driven gear 502, and the driven gear 502 is meshed with the output gear of the gear transmission assembly 6.

[0018] A magnet 302 is fixedly connected to the side wall of the positioning groove 301 on the iron sheet positioning support plate 3. The magnet 302 can further position and adsorb the middle iron sheet after it is placed.

[0019] The iron sheet positioning column 4 is fixedly connected to the lower mold core 1, and the threaded column 5 is threadedly connected to the lower mold core 1. The iron sheet positioning column 4 is used to match the hole grooves of other iron sheets for positioning. The driven gear 502 is fixedly connected to the threaded column 5, and the rotation of the driven gear 501 can drive the threaded column 5 to rotate.

[0020] Each gear of the gear transmission assembly 6 is rotatably connected to the lower die core 1 , and the input gear of the gear transmission assembly 6 is exposed to the outside of the lower die core 1 , so as to cooperate with an external driving mechanism to rotate the gear transmission assembly 6 .

[0021] The working principle of the utility model is: before use, the height of the iron sheet positioning support plate 3 is first adjusted according to the specifications of the connecting piece, the gear transmission assembly 6 is driven to rotate through an external driving mechanism, and the driven gear 502 is driven to rotate through the gear transmission assembly 6. When the driven gear 502 rotates, the threaded column 5 rotates accordingly to be lifted and lowered (the driven gear 502 will also be lifted and lowered relative to the gear transmission assembly). After the height adjustment of the iron sheet positioning support plate 3 is completed, the iron sheet can be placed, and the middle iron sheet can be placed on the iron sheet positioning support plate 3 along the positioning groove 301, and the other iron sheets can be placed along the iron sheet positioning column 4 and the molding groove 101, and finally the mold can be closed for injection molding.

[0022] The above embodiments are used to further illustrate the present invention, but the present invention is not limited to these specific implementations. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention should be understood to be within the protection scope of the present invention.

Claims

1. A positioning mechanism for an iron sheet of a plastic-coated iron injection mold, characterized in that: The invention comprises a lower die core (1), wherein the lower die core (1) is provided with a forming groove (101) and a forming protrusion (102), a demoulding ejector rod (2) and an iron sheet positioning support plate (3) are slidably connected inside the lower die core (1), a positioning groove (301) is formed on the iron sheet positioning support plate (3), iron sheet positioning columns (4) are provided on both sides of the forming groove (101) on the lower die core (1), a threaded column (5) and a gear transmission assembly (6) are provided at the lower end of the lower die core (1), an annular groove (501) is formed on the upper side of the threaded column (5), the lower end of the iron sheet positioning support plate (3) is slidably connected to the annular groove (501), the lower end of the threaded column (5) is fixedly connected to a driven gear (502), and the driven gear (502) is meshed with an output gear of the gear transmission assembly (6).

2. The iron sheet positioning mechanism of the plastic-coated iron injection mold according to claim 1, characterized in that: A magnet (302) is fixedly connected to the side wall of the positioning groove (301) on the iron sheet positioning support plate (3).

3. The iron sheet positioning mechanism of the plastic-coated iron injection mold according to claim 1, characterized in that: The iron sheet positioning column (4) is fixedly connected to the lower die core (1), the threaded column (5) is threadedly connected to the lower die core (1), and the driven gear (502) is fixedly connected to the threaded column (5).

4. The iron sheet positioning mechanism of the plastic-coated iron injection mold according to claim 1, characterized in that: Each gear of the gear transmission assembly (6) is rotationally connected to the lower die core (1), and the input gear of the gear transmission assembly (6) is exposed to the outside of the lower die core (1).

Images