Positioning device for liquid silicone injection molding overmolding

Abstract

This utility model discloses a positioning device for a liquid silicone injection molding die, including a lower mold with a lower mold cavity for molding. Several positioning blocks are arranged on the outer side of the lower mold cavity, and a positioning device is provided on the lower mold cavity. The positioning device includes a positioning rod and a rotating rod. The positioning rod is connected to and rotates onto an insert via the rotating rod to lock the insert. By providing rotatable positioning rods on both sides of the mold cavity, and by rotating the positioning rods to contact the clamping device, reversed inserts can be quickly identified and detected. This allows for pre-clamping of the insert before injection molding, preventing reversed inserts from causing the mold to not close properly and resulting in injection failure. It also reduces wear on the mold caused by reversed inserts and saves production costs.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, and in particular to a positioning device for liquid silicone injection molding overmolding molds. Background Technology

[0002] Liquid silicone injection molding overmolding is widely used in precision electronics, medical devices, food containers, and other fields. Its core principle is to coat the surface of metal, plastic, or other inserts with liquid silicone to form an integrated, sealed, or functional structure. In existing technologies, some components of insulated containers use this injection molding method. However, during the production process, when multiple inserts are injected and overmolded simultaneously, the inserts may be placed backwards. Under high-intensity work conditions, operators may overlook the placement of individual inserts, leading to the mold failing to close properly and causing mold wear. This results in significant wasted production costs. Utility Model Content

[0003] This invention addresses the shortcomings of existing technologies by providing a positioning device for liquid silicone injection molding overmolding.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a lower mold is included, a lower mold cavity for molding is provided on the lower mold, a plurality of positioning blocks are provided on the outer side of the lower mold cavity, a positioning device is provided on the lower mold cavity, the positioning device includes a positioning rod and a rotating rod, the positioning rod is connected to the rotating rod and rotated to the insert to lock the insert.

[0005] In the above scheme, the rotating rod is set in the mounting groove through a connecting block, and the rotating rod is slidably set in the connecting block.

[0006] In the above scheme, the rotating rod is damped and slidably connected in the connecting block.

[0007] In the above scheme, the mounting groove includes two sets of mounting plates protruding from the lower mold cavity, and the connecting block rotates within it via a shaft.

[0008] In the above scheme, the mounting block includes a limiting surface for restricting the movement of the positioning rod.

[0009] In the above scheme, the positioning block includes a first positioning block, and a second positioning block is slidably disposed on the first positioning block. The first positioning block and the second positioning block are combined to place the insert.

[0010] The above scheme also includes an upper mold, which has an upper mold cavity. The upper mold cavity is used to cover the upper surface of the insert and cooperates with the lower mold cavity to cover the insert.

[0011] In the above solution, the insert includes an injection molding part and a clamping part, and the clamping part is placed in the positioning block.

[0012] In the above scheme, the positioning rod is fixed between the clamping part and the injection molding part to initially fix the insert.

[0013] In the above scheme, the upper mold includes a locking block, which cooperates with the positioning block to fix the clamping part.

[0014] The beneficial effects of this utility model are: by setting rotatable positioning rods on both sides of the mold cavity, the reversed inserts can be quickly identified and found through rotation and positioning contact with the clamps, so as to realize the pre-clamping of the inserts before injection molding, to prevent the mold from not closing due to the reversed inserts, thus reducing the wear of the mold on the reversed inserts and saving production costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the lower mold structure of this utility model.

[0016] Figure 2 for Figure 1 Enlarged view of point A, top view of this utility model.

[0017] Figure 3 This is a top view of the lower mold of this utility model.

[0018] Figure 4 This is a schematic diagram of the lower mold and upper mold of this utility model.

[0019] Figure 5 This is a schematic diagram of the mold assembly of the lower mold and the upper mold of this utility model.

[0020] Figure 6 This is a schematic diagram of the insert of this utility model. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments: See below Figures 1-6 The positioning device for the liquid silicone injection molding overmolding mold includes a lower mold 1 and an upper mold 11. The lower mold 1 has a lower mold cavity for molding, and the upper mold 11 has an upper mold cavity. The lower mold cavity and the upper mold cavity are combined for injection molding of the insert 13.

[0022] Furthermore, the insert 13 includes an injection molding part 14 and a clamping part 15. Generally, the clamping part 15 is fixed in the upper mold 11 and the lower mold 1, while the injection molding part 14 is placed in the lower mold cavity and the upper mold cavity to perform liquid silicone molding.

[0023] Several positioning blocks are arranged on the outer side of the lower mold cavity. Each positioning block includes a first positioning block 9 and several second positioning blocks 10 slidably disposed thereon. The first positioning block 9 and the two second positioning blocks 10 combine to form a positioning structure for holding the clamping part 15 of the insert 13. That is, the clamping part 15 of the insert 13 is precisely placed within the combination of the first positioning block 9 and the second positioning blocks 10. Furthermore, a locking block 16 is provided in the upper mold cavity in conjunction with the positioning blocks. In the mold-closed state, the locking block 16 and the positioning blocks of the lower mold 1 work together to clamp the clamping part 15 of the insert 13.

[0024] A positioning device is provided on the side of the lower mold cavity, which mainly consists of a positioning rod 3 and a rotating rod 4. The rotating rod 4 is installed in the mounting groove 6 on the edge of the lower mold cavity via a connecting block 5. The mounting groove 6 is formed by two sets of mounting plates 7 protruding from the surface of the lower mold cavity. The connecting block 5 is hinged between the two sets of mounting plates 7 via a rotating shaft. This allows the positioning rod 3 to rotate around the connecting block 5 and abut against the insert 13.

[0025] The rotating rod 4 is inserted into the connecting block 5 in a damped sliding manner to achieve controllable axial displacement. The positioning rod 3 is fixedly connected to the end of the rotating rod 4. The pivoting motion of the rotating rod 4 can drive the positioning rod 3 to swing to the junction area of ​​the clamping part 15 and the injection part 14 of the insert 13, thereby forming a preliminary mechanical lock on the insert 13.

[0026] The connecting block 5 has an inclined limiting surface 8 on the side facing the positioning rod 3. When the positioning rod 3 rotates to the working position, the limiting surface 8 fits against the side of the positioning rod 3. The upper mold cavity surface is matched with the lower mold cavity, that is, the upper mold cavity has a groove that matches the shape of the positioning rod 3. When the mold is closed, the top of the positioning rod 3 is embedded in the groove to achieve precise positioning.

[0027] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A positioning device for liquid silicone rubber injection overmolding mold, characterized in that: Includes a lower mold (1), the lower mold (1) is provided with a lower mold cavity for molding, a plurality of positioning blocks are provided on the outside of the lower mold cavity, and a positioning device is provided on the lower mold cavity. The positioning device includes a positioning rod (3) and a rotating rod (4). The positioning rod (3) is connected to the rotating rod (4) and rotated to the insert (13) to lock the insert (13).

2. The positioning device for liquid silicone rubber injection overmolding mold according to claim 1, characterized in that: The rotating rod (4) is set in the mounting groove (6) through the connecting block (5), and the rotating rod (4) is slidably set in the connecting block (5).

3. The positioning device for liquid silicone rubber injection overmolding mold according to claim 2, characterized in that: The rotating rod (4) is damped and slidably connected in the connecting block (5).

4. The positioning device for liquid silicone rubber injection overmolding mold according to claim 2, characterized in that: The mounting groove (6) includes two sets of mounting plates (7) protruding from the lower mold cavity, and the connecting block (5) rotates therein via a shaft.

5. The positioning device for liquid silicone rubber injection overmolding mold according to claim 4, characterized in that: The mounting block includes a limiting surface (8) for restricting the movement of the positioning rod (3).

6. The positioning device for liquid silicone rubber injection overmolding mold according to claim 1, wherein: The positioning block includes a first positioning block (9) and a second positioning block (10) slidably disposed on the first positioning block (9). The first positioning block (9) and the second positioning block (10) are combined to place the insert (13).

7. The positioning device for liquid silicone rubber injection overmolding mold according to claim 1, wherein: It also includes an upper mold (11), which has an upper mold cavity. The upper mold cavity is used to cover the upper surface of the insert (13) and cooperates with the lower mold cavity to cover the insert (13).

8. The positioning device for liquid silicone rubber injection overmolding mold according to claim 1 or 7, characterized in that: The insert (13) includes an injection molding part (14) and a clamping part (15), which is placed in the positioning block.

9. The positioning device for liquid silicone rubber injection overmolding mold according to claim 8, characterized in that: The positioning rod (3) is fixed between the clamping part (15) and the injection part (14) to initially fix the insert (13).

10. The positioning device for liquid silicone rubber injection molding overmolding mold according to claim 9, wherein: The upper mold (11) includes a locking block (16), which cooperates with the positioning block to fix the clamping part (15).

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