Injection molding mold

Abstract

The embodiment of the invention relates to the technical field of injection molds, and discloses an injection molding mold which comprises a rear mold core and a front mold core located above the rear mold core, the rear mold core comprises a mold sliding block located on the upper portion, and the mold sliding block moves in the transverse direction relative to the rear mold core. The mold sliding block comprises a sliding block insert, a sliding block insert pin and a limiting rod, the sliding block insert pin and the limiting rod are located in the sliding block insert, the sliding block insert pin upwards extends out of a parting surface, the limiting rod abuts against the side wall of the sliding block insert pin, and the front mold core comprises a groove concaved inwards from the parting surface and a positioning insert pin fixedly held in the groove. And the bottom surface of the positioning insert pin extends to the parting surface and corresponds to the slide block insert pin. Before the injection molding mold is closed, the hardware is placed on the parting surface and is arranged at the top of the sliding block insert pin in a sleeving manner; when the injection molding mold is closed, the mold sliding block moves inwards, at the moment, the hardware is contained in the groove, the positioning insert pin downwards pushes the sliding block insert pin until the top surface of the sliding block insert pin is lower than the parting surface, and therefore pre-positioning of the hardware and smooth mold opening after injection molding are achieved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of injection molds, and in particular to an injection molding mold. Background Art

[0002] The hardware of plastic products is traditionally designed to be positioned on the slider parting surface. After molding, the slider cannot be ejected normally in the exit direction. According to the market and product development needs, new molds need to be developed to meet the functional needs of plastic products. To achieve this requirement, the mold structure needs to be optimized.

[0003] Therefore, it is necessary to provide a new injection molding die to overcome the above-mentioned defects. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide an injection molding mold to achieve pre-positioning of hardware before mold closing and smooth mold opening after injection molding.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides an injection molding mold for injection molding an annular hardware part on an insulating body, the injection molding mold includes a rear mold core and a front mold core located above the rear mold core, when the front mold core and the rear mold core are molded together, the top surface of the rear mold core and the bottom surface of the front mold core are parting surfaces, the rear mold core includes a mold slider located at the upper part, and the mold slider moves laterally relative to the rear mold core. The mold slider includes a slider insert and a columnar slider pin and a limit rod located in the slider insert, the slider pin extends upward from the parting surface of the slider insert, the limit rod presses against the columnar side wall of the slider pin in the laterally direction, the front mold core includes a groove recessed inward from the parting surface and a positioning pin retained in the groove, the bottom surface of the positioning pin extends to the parting surface of the front mold core and is arranged vertically corresponding to the slider pin. Before the injection molding mold is closed, the hardware is placed on the parting surface of the slider insert and sleeved on the top of the slider pin. When the injection molding mold is closed, the mold slider moves inward laterally and the parting surfaces of the front mold core and the rear mold core are fitted. At this time, the hardware is accommodated in the groove of the front mold core, and the bottom surface of the positioning pin abuts against the top surface of the slider pin and pushes the slider pin downward until the top surface of the slider pin is lower than the parting surface of the slider insert. At the same time, the limiting rod presses and limits the slider pin.

[0006] In a preferred embodiment, the slider pin is provided with a first limit groove and a second limit groove located on the cylindrical side wall, the second limit groove is located above the first limit groove, and before the injection molding mold is closed, the limit rod is pressed against the first limit groove, and when the injection molding mold is closed, the limit rod is pressed against the second limit groove.

[0007] In a preferred embodiment, the mold slider is provided with a vertical groove penetrating the slider insert vertically and a transverse groove extending transversely, the transverse groove is connected to the vertical groove, the slider pin insert portion is accommodated in the vertical groove and moves vertically, the limiting rod is accommodated in the transverse groove and the end of the limiting rod extends into the vertical groove to press the slider pin.

[0008] In a preferred embodiment, the mold slider is provided with a cushion block located in the vertical groove, and the cushion block is located below the slider pin. When the injection molding mold is closed, the bottom of the slider pin abuts against the cushion block.

[0009] In a preferred embodiment, the mold slider has a slider withdrawal state before the injection molding mold is closed and a slider closing state when the injection molding mold is closed, and the mold slider in the slider withdrawal state is located laterally outside the mold slider in the slider closing state.

[0010] In a preferred embodiment, when the injection molding mold is closed, the mold slider drives the hardware to move laterally inward from the slider withdrawal state to the slider closing state, and the hardware and the insulating body are integrally injection molded with an electrical connector.

[0011] In a preferred embodiment, when the injection molding mold is opened, the front mold core moves away from the rear mold core vertically to expose the electrical connector, and at this time, the positioning pin is separated from the hardware.

[0012] In a preferred embodiment, after the injection molding mold is opened, the top surface of the slider pin is lower than the parting surface of the slider insert and is separated from the hardware. At this time, the mold slider moves laterally outward from the slider closing state to the slider withdrawal state.

[0013] In a preferred embodiment, the rear mold core includes an ejector mechanism, which is provided with an ejector pin extending vertically. When the mold slider is in the slider withdrawal state, the slider insert pin is vertically opposite to the ejector pin, and the ejector pin pushes the slider insert pin upward so that the top of the slider insert is exposed from the parting surface of the slider insert.

[0014] In a preferred embodiment, when the mold slider is in the slider mold closing state, the slider insert pin is disengaged from the ejector pin.

[0015] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: the mold slider includes a slider insert and a columnar slider pin and a limit rod located in the slider insert, the slider pin extends upward from the parting surface of the slider insert, the limit rod is laterally pressed against the columnar side wall of the slider pin, the front mold core includes a groove recessed inward from the parting surface and a positioning pin retained in the groove, the bottom surface of the positioning pin extends to the parting surface of the front mold core and is arranged vertically corresponding to the slider pin. Before the injection molding mold is closed, the hardware is placed on the parting surface of the slider insert and sleeved on the top of the slider pin; when the injection molding mold is closed, the mold slider moves inward in the horizontal direction and the parting surfaces of the front mold core and the rear mold core are in contact. At this time, the hardware is accommodated in the groove of the front mold core, and the bottom surface of the positioning pin abuts against the top surface of the slider pin and pushes the slider pin downward until the top surface of the slider pin is lower than the parting surface of the slider insert. At the same time, the limiting rod presses and limits the slider pin. In this way, the slider pin pre-positioning of the hardware before the mold is closed and the positioning pin pre-positioning during the mold closing are achieved; and because the top surface of the slider pin is lower than the parting surface of the slider insert, the mold slider can be opened smoothly after injection molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0017] Figure 1 It is a three-dimensional schematic diagram of the rear mold core in the injection molding mold of the present invention.

[0018] Figure 2 It is a three-dimensional schematic diagram of the front mold core in the injection molding mold of the present invention.

[0019] Figure 3 yes Figure 1 The cross-sectional view of the rear mold core before mold closing is shown.

[0020] Figure 4 yes Figure 3 The enlarged view of the part before the rear mold core is shown.

[0021] Figure 5 It is a cross-sectional view of the injection molding die of the present invention when the die is closed.

[0022] Figure 6 yes Figure 5 The enlarged view of the part of the injection molding mold when the mold is closed is shown.

[0023] Figure 7 yes Figure 3 The cross-sectional view of the rear mold core when the mold is opened is shown.

[0024] Figure 8 yes Figure 7 The enlarged view of the part when the rear mold core is opened is shown. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the embodiments of the present invention, many technical details are provided to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can be implemented.

[0026] See also Figures 1 to 8 The figure shows an injection molding mold 100 according to the present invention, which is used to injection mold an annular hardware 70 on an insulating body 60 to form a final electrical connector 200. The injection molding mold 100 includes a rear mold core 10 and a front mold core 20 located above the rear mold core 10. When the front mold core 20 and the rear mold core 10 are molded together, the top surface of the rear mold core 10 and the bottom surface of the front mold core 20 can be regarded as a parting surface 101 of the injection molding mold 100.

[0027] See also Figure 1 , Figure 3 and Figure 4 As shown, the rear mold core 10 includes a mold slider 30 and an ejector mechanism 40 located at the upper part, and the mold slider 30 can move in the lateral direction relative to the rear mold core 10. The mold slider 30 includes a slider insert 31 and a columnar slider insert pin 32 and a limit rod 33 located in the slider insert 31. The slider insert pin 32 extends upward from the parting surface 101 of the slider insert 31, and the limit rod 33 presses against the columnar side wall of the slider insert pin 31 in the lateral direction.

[0028] Specifically, the mold slider 30 is provided with a vertical groove 311 penetrating the slider insert 31 in the vertical direction and a transverse groove 312 extending in the transverse direction, and the transverse groove 312 is connected to the vertical groove 311. The slider insert pin 32 is partially accommodated in the vertical groove 311 and moves vertically, and the limiting rod 33 is accommodated in the transverse groove 312 and the end of the limiting rod 33 extends into the vertical groove 311 to press the slider insert pin 32. Further, the slider insert pin 32 is provided with a first limiting groove 321 and a second limiting groove 322 located on the cylindrical side wall, and the second limiting groove 322 is located above the first limiting groove 321; before the injection molding mold 100 is closed, the limiting rod 33 presses against the first limiting groove 321, and when the injection molding mold 100 is closed, the limiting rod 33 presses against the second limiting groove 322. The mold slider 30 has a slider withdrawal state before the injection molding mold 100 is closed and a slider closing state when the injection molding mold 100 is closed. The mold slider 30 in the slider withdrawal state is located laterally outside the mold slider 30 in the slider closing state.

[0029] The ejector mechanism 40 is provided with an ejector 41 extending in the vertical direction. When the mold slider 30 is in the slider withdrawal state, the slider insert pin 32 is vertically opposite to the ejector pin 41, so that the ejector pin 41 extends into the vertical groove 311 and pushes the slider insert pin 32 upward, so that the top of the slider insert pin 32 is exposed on the parting surface 101 of the slider insert 31. In addition, when the mold slider 30 is in the slider mold closing state, the slider insert pin 32 is separated from the ejector pin 41 and the two are vertically offset. The mold slider 30 is also provided with a cushion block 34 located in the vertical groove 311, and the cushion block 34 is located below the slider insert pin 32. Before the injection molding mold 100 is closed, the ejector pin 41 of the ejector mechanism 40 passes through the cushion block 34 and abuts against the slider insert pin 32. When the injection molding mold 100 is closed, the bottom of the slider insert pin 32 abuts against the top of the cushion block 34.

[0030] See also Figure 2 , Figure 5 and Figure 6 As shown, the front mold core 20 includes a groove 21 recessed inward from the parting surface 101 and a positioning pin 50 retained in the groove 21. The bottom surface of the positioning pin 50 extends to the parting surface 101 of the front mold core 20 and is arranged vertically corresponding to the slider pin 32. Figure 7 and Figure 8As shown, before the injection molding mold 100 is molded, the mold slider 30 is in a slider withdrawal state. At this time, the slider pin 32 is pushed upward by the ejector pin 41 to be exposed on the parting surface 101 of the slider insert 31, and the limiting rod 33 is pressed against the first limiting groove 321 of the slider pin 32 to limit the slider pin 32; at the same time, the hardware 70 is placed on the parting surface 101 of the slider insert 31 and is sleeved on the top of the slider pin 32 to achieve pre-positioning of the hardware 70 before mold closing.

[0031] When the injection molding mold 100 is closed, the mold slider 30 drives the hardware 70 to move inwardly from the slider withdrawal state to the slider closing state, and the front mold core 20 and the parting surface 101 of the rear mold core 10 are in contact. At this time, the hardware 70 is accommodated in the groove 21 of the front mold core 20, and the bottom surface of the positioning pin 50 abuts against the top surface of the slider pin 32 and pushes the slider pin 32 downward until the top surface of the slider pin 32 is lower than the parting surface of the slider insert 31; at the same time, the limiting rod 33 presses and limits the slider pin 32, and the hardware 70 is sleeved on the positioning pin 50 to achieve pre-positioning of the hardware 70 when the mold is closed.

[0032] The hardware 70 and the insulating body 60 are integrally injection molded with the above-mentioned electrical connector 200, and the injection molding mold 100 is opened after molding. When the injection molding mold 100 is opened, the front mold core 20 is vertically away from the rear mold core 10 to expose the electrical connector 200, and at this time, the positioning pin 50 is separated from the hardware 70. In addition, after the injection molding mold 100 is opened, since the top surface of the slider pin 32 is lower than the parting surface 101 of the slider insert 31, that is, the slider pin 32 has been separated from the hardware 70, at this time, the mold slider 30 can move outward in the horizontal direction from the slider clamping state to the slider withdrawal state, so that the mold can be opened smoothly.

[0033] In the present invention, before the injection molding mold 100 is closed, the hardware 70 is placed on the parting surface 101 of the slider insert 31 and is sleeved on the top of the slider pin 32; when the injection molding mold 100 is closed, the mold slider 30 moves inward laterally and the parting surface 101 of the front mold core 20 and the rear mold core 10 are fitted together. At this time, the hardware 70 is accommodated in the groove 21 of the front mold core 20, and the bottom surface of the positioning pin 50 abuts against the top surface of the slider pin 32 and pushes the slider pin 32 downward until the top surface of the slider pin 32 is lower than the parting surface 101 of the slider insert 31. At the same time, the limiting rod 33 presses and limits the slider pin 32. This achieves the pre-positioning of the slider pin 32 of the hardware 70 before mold closing and the pre-positioning of the positioning pin 50 during mold closing; and because the top surface of the slider pin 32 is lower than the parting surface 101 of the slider insert 31, the mold slider 30 can be opened smoothly after injection molding.

[0034] Those skilled in the art will appreciate that the above embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. An injection molding mold, used for injection molding an annular hardware part on an insulating body, the injection molding mold comprises a rear mold core and a front mold core located above the rear mold core, when the front mold core and the rear mold core are molded together, the top surface of the rear mold core and the bottom surface of the front mold core are parting surfaces, the rear mold core comprises a mold slider located at the upper part, and the mold slider moves laterally relative to the rear mold core; characterized in that: The mold slider includes a slider insert and a columnar slider pin and a limit rod located in the slider insert, the slider pin extends upward from the parting surface of the slider insert, the limit rod presses against the columnar side wall of the slider pin in the transverse direction, the front mold core includes a groove recessed inward from the parting surface and a positioning pin held in the groove, the bottom surface of the positioning pin extends to the parting surface of the front mold core and is arranged vertically corresponding to the slider pin; before the injection molding mold is closed, the hardware is placed On the parting surface of the slider insert and sleeved on the top of the slider pin, when the injection molding mold is closed, the mold slider moves inward laterally and the parting surfaces of the front mold core and the rear mold core are fitted. At this time, the hardware is accommodated in the groove of the front mold core, and the bottom surface of the positioning pin abuts against the top surface of the slider pin and pushes the slider pin downward until the top surface of the slider pin is lower than the parting surface of the slider insert. At the same time, the limiting rod presses and limits the slider pin.

2. The injection molding die according to claim 1, characterized in that: The slider pin is provided with a first limit groove and a second limit groove located on the cylindrical side wall, the second limit groove is located above the first limit groove, before the injection molding mold is closed, the limit rod is pressed against the first limit groove, and when the injection molding mold is closed, the limit rod is pressed against the second limit groove.

3. The injection molding die according to claim 2, characterized in that: The mold slider is provided with a vertical groove penetrating the slider insert vertically and a transverse groove extending horizontally, the transverse groove is connected to the vertical groove, the slider pin insert portion is accommodated in the vertical groove and moves vertically, the limit rod is accommodated in the transverse groove and the end of the limit rod extends into the vertical groove to press the slider pin.

4. The injection molding die according to claim 3, characterized in that: The mold slider is provided with a cushion block located in the vertical groove, and the cushion block is located below the slider pin. When the injection molding mold is closed, the bottom of the slider pin abuts against the cushion block.

5. The injection molding die according to claim 1, characterized in that: The mold slider has a slider withdrawal state before the injection molding mold is closed and a slider closing state when the injection molding mold is closed. The mold slider in the slider withdrawal state is located laterally outside the mold slider in the slider closing state.

6. The injection molding die according to claim 5, characterized in that: When the injection molding mold is closed, the mold slider drives the hardware to move inwardly along the lateral direction from the slider withdrawal state to the slider closing state, and the hardware and the insulating body are integrally injection molded with an electrical connector.

7. The injection molding die according to claim 6, characterized in that: When the injection molding mold is opened, the front mold core moves away from the rear mold core vertically to expose the electrical connector, and at this time, the positioning pin is separated from the hardware.

8. The injection molding die according to claim 7, characterized in that: After the injection molding mold is opened, the top surface of the slider pin is lower than the parting surface of the slider insert and is separated from the hardware. At this time, the mold slider moves outward laterally from the slider clamping state to the slider withdrawal state.

9. The injection molding die according to claim 5, characterized in that: The rear mold core includes an ejector pin mechanism, which is provided with an ejector pin extending vertically. When the mold slider is in the slider withdrawal state, the slider insert pin is vertically opposite to the ejector pin, and the ejector pin pushes the slider insert pin upward so that the top of the slider insert pin is exposed from the parting surface of the slider insert.

10. The injection molding die according to claim 9, characterized in that: When the mold slider is in the slider mold closing state, the slider insert pin is separated from the ejector pin.

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