An injection mold

Abstract

The present invention discloses an injection mold, which comprises an upper mold core, a lower mold core, a pressure plate, two shovel machine blocks, a first slider, two elastic members, an inner mold insert, and a second slider. The lower mold core is provided with a receiving cavity, the pressure plate is fixed in the receiving cavity, the pressure plate has a terminal positioning groove, the pressure plate comprises a wide portion and a narrow portion, two receiving spaces are formed on both sides of the narrow portion, the first slider comprises a middle portion and two side portions located on both sides of the middle portion, the middle portion is located at the lower side of the narrow portion, the two side portions are respectively accommodated in the two receiving spaces, the two shovel machine blocks are respectively inserted in the two receiving spaces and cooperate with the corresponding side portions, the shovel machine blocks extend upward out of the receiving space, the two elastic members are respectively abutted against the two side portions, the elastic member and the shovel machine block are located at opposite sides of the side portions, the second slider and the inner mold insert are both abutted against the middle portion, the inner mold insert is located at the lower side of the second slider and abuts against the second slider.

Description

Technical Field

[0001] The present invention relates to the field of injection molding. Background Art

[0002] Connectors in the prior art generally include a plastic body and a metal part embedded in the plastic body. The metal part is generally formed by stamping a metal plate. The metal part has a protruding portion, and the plastic body is generally formed by injection molding. During the injection molding process, generally, the metal part is first placed in an injection mold and positioned, and the plastic body is formed by injection molding. The metal part is embedded in the plastic body, and the protruding portion is located outside the plastic body. Due to the precise positioning of the metal part by the injection mold, the protruding portion is embedded in the injection mold, and it is relatively difficult to remove the injection-molded connector from the injection mold.

[0003] In view of this, the present invention proposes a new injection mold. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention aims to provide a new injection mold, so that the injection-molded part can be easily removed from the injection mold.

[0005] The present invention is achieved through the following technical solutions:

[0006] An injection mold, the injection mold includes an upper mold core, a lower mold core, a pressing plate, two lifter blocks, a first slider, two elastic members, an inner mold insert, and a second slider. The lower mold core is provided with a receiving cavity, the pressing plate is fixed in the receiving cavity, the pressing plate has a terminal positioning groove, the pressing plate includes a wide portion and a narrow portion, two receiving spaces are formed on both sides of the narrow portion, the first slider includes a middle portion and two side portions located on both sides of the middle portion, the middle portion is located below the narrow portion, the two side portions are respectively received in the two receiving spaces, the two lifter blocks are respectively inserted into the two receiving spaces and cooperate with the corresponding side portions, the lifter blocks extend upward out of the receiving spaces, the two elastic members respectively abut against the two side portions, the elastic members and the lifter blocks are located on opposite sides of the side portions, the second slider and the inner mold insert both abut against the middle portion, and the inner mold insert is located below the second slider and abuts against the second slider.

[0007] Further, the inner mold insert is provided with a first terminal receiving groove extending in the up and down direction, the second slider is provided with a second terminal receiving groove extending in the up and down direction, and the first terminal receiving groove and the second terminal receiving groove are aligned in the up and down direction.

[0008] Further, a third terminal receiving groove extending in the vertical direction is provided in the middle part. The third terminal receiving groove is horizontally matched with the first terminal receiving groove, the third terminal receiving groove is horizontally matched with the second terminal receiving groove, and the first terminal receiving groove, the second terminal receiving groove and the third terminal receiving groove together form a terminal receiving space.

[0009] Further, a first inclined surface is provided on the side part, and a second inclined surface is provided on the shoveling block. The first inclined surface is matched with the second inclined surface.

[0010] Further, during the process of the shoveling block being inserted into the receiving space, the shoveling block pushes against the side part. After the second inclined surface is completely matched with the first inclined surface, the third terminal receiving groove is horizontally matched with the first terminal receiving groove.

[0011] Further, during the process of the shoveling block being removed from the receiving space, the second inclined surface disengages from the first inclined surface, the elastic member pushes against the side part, and the third terminal receiving groove disengages from the first terminal receiving groove.

[0012] Further, the second slider can move horizontally. After the second slider moves until it abuts against the narrow part, the second terminal receiving groove is aligned with the first terminal receiving groove in the vertical direction.

[0013] Further, the terminal positioning groove extends in the horizontal direction. The terminal positioning groove is used to accommodate the horizontal part of the terminal, and the terminal receiving space is used to accommodate the vertical part of the terminal.

[0014] Further, after the upper mold core and the lower mold core are clamped, the shoveling block is accommodated in the upper mold core and the lower mold core.

[0015] Further, the elastic member is a ball plunger screw.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The injection mold of the present invention adopts the first slider and the second slider. During injection molding, the first slider and the second slider are used to position the terminals. After injection molding is completed, the first slider and the second slider are moved, so that the injection molded part can be easily taken out of the injection mold. Description of the Drawings

[0017] Figure 1 is a three-dimensional schematic diagram of the injection molded part in the present invention;

[0018] Figure 2 is Figure 1 a three-dimensional schematic diagram of another perspective of the injection molded part shown;

[0019] Figure 3It is a three-dimensional schematic diagram of the injection mold of the present invention;

[0020] Figure 4 It is Figure 3 A three-dimensional schematic diagram of the shown injection mold (with conductive terminals placed) after removing the upper mold core;

[0021] Figure 5 It is Figure 4 A partial structural schematic diagram of the shown injection mold (with conductive terminals placed);

[0022] Figure 6 It is Figure 5 A partial structural schematic diagram of the shown injection mold (with conductive terminals placed);

[0023] Figure 7 It is Figure 5 A partial structural schematic diagram of the shown injection mold (with conductive terminals placed);

[0024] Figure 8 It is Figure 7 A partial structural schematic diagram of the shown injection mold;

[0025] Figure 9 It is Figure 7 A partial structural schematic diagram of the shown injection mold. Detailed implementation mode

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings and implementation modes.

[0027] As Figures 1 to 2 shown, an injection molded part 10 disclosed by the present invention includes a plastic body 11 and five conductive terminals 12 embedded in the plastic body 11. The five conductive terminals 12 are arranged in sequence along the horizontal direction. Each conductive terminal 12 includes a horizontal portion 121 and a vertical portion 122. The horizontal portion 121 extends along the front-rear direction, and the vertical portion 122 extends downward from the rear end of the horizontal portion 121. The horizontal portion 121 and the vertical portion 122 are perpendicularly arranged. The conductive terminal 12 further includes two protruding portions 123 protruding from both sides of the vertical portion 122. The two protruding portions 123 are located on the front and rear sides of the vertical portion 122, and the two protruding portions 123 are symmetrically arranged in the front-rear direction. The two protruding portions 123 are located outside the plastic body 11. In this embodiment, the vertical portion 122 of each conductive terminal 12 includes two protruding portions 123, and the two protruding portions 123 are symmetrically arranged in the front-rear direction. In other embodiments, the number and position of the protruding portions 123 of the vertical portion 122 of each conductive terminal 12 can be set according to actual needs.

[0028] Combined with Figures 3 to 9As shown, an injection mold 20 disclosed by the present invention includes an upper mold core 21, a lower mold core 22, a pressing plate 23 mounted on the lower mold core 22, two lifter blocks 24, a first slider 25, two elastic members 26, an inner mold insert 27, and a second slider 28. The lower mold core 22 has a receiving cavity, and the pressing plate 23 is fixed in the receiving cavity. The pressing plate 23 has a terminal positioning groove for positioning the conductive terminal 12. The pressing plate 23 is generally T-shaped and includes a wide portion 231 and a narrow portion 232. The narrow portion 232 is located at the rear side of the wide portion 231, and two receiving spaces are formed on both sides of the narrow portion 232. The first slider 25 includes a middle portion 251 and two side portions 252 located on both sides of the middle portion 251. The first slider 25 is mounted on the lower mold core 22. The middle portion 251 is located below the narrow portion 232 and abuts against the lower surface of the narrow portion 232 from bottom to top. The two side portions 252 are respectively received in the two receiving spaces, and the rear surface of the narrow portion 232 is flush with the rear surface of the first slider 25. The two lifter blocks 24 are respectively mounted in the two receiving spaces. Specifically, the lifter block 24 is mounted between the wide portion 231 of the pressing plate 23 and the side portion 252 of the first slider 25, and the lifter block 24 extends upward out of the receiving space. The two elastic members 26 are mounted in the lower mold core 22, and the two elastic members 26 respectively abut against the rear surfaces of the two side portions 252 of the first slider 25 from rear to front. The second slider 28 is mounted on the lower mold core 22 and abuts against the rear surface of the narrow portion 232 and the rear surface of the middle portion 251 from rear to front. The inner mold insert 27 is mounted on the lower mold core 22 and abuts against the rear surface of the middle portion 251 from rear to front, and the inner mold insert 27 is located below the second slider 28 and abuts against the lower surface of the second slider 28 from bottom to top. In this embodiment, the elastic member 26 is a ball plunger screw. In other embodiments, the elastic member 26 can also be other components, which are specifically set according to actual requirements.

[0029] The inner mold insert 27 is provided with five first terminal receiving grooves 271 recessed from its front surface backward. The second slider 28 is provided with five second terminal receiving grooves 281 recessed from its front surface backward. The middle part 251 of the first slider 25 is provided with five third terminal receiving grooves 253 recessed from its rear surface forward. The first terminal receiving grooves 271, the second terminal receiving grooves 281, and the third terminal receiving grooves 253 all extend in the vertical direction. When the inner mold insert 27 and the second slider 28 both abut against the rear surface of the first slider 25 from the rear to the front, the five first terminal receiving grooves 271 and the five second terminal receiving grooves 281 are vertically aligned and communicated with each other one by one. The five first terminal receiving grooves 271 and the five third terminal receiving grooves 253 are aligned and matched with each other in the front-rear direction one by one. The five second terminal receiving grooves 281 and the five third terminal receiving grooves 253 are aligned and matched with each other in the front-rear direction one by one. Therefore, the five first terminal receiving grooves 271, the five second terminal receiving grooves 281, and the five third terminal receiving grooves 253 jointly form a terminal receiving space for receiving the vertical portions 122 of the five conductive terminals 12, and the protruding portions 123 of the vertical portions 122 are located within the terminal receiving space.

[0030] The front surfaces of the two side portions 252 of the first slider 25 are both smooth first inclined surfaces 254. The rear surface of the lifter block 24 that cooperates with the front surface of the side portion 25 is a smooth second inclined surface 241. The settings of the first inclined surface 254 and the second inclined surface 241 facilitate the insertion of the lifter block 24 into the receiving space and its cooperation with the front surface of the side portion 252 of the first slider 25. During the insertion process, the lifter block 24 pushes the side portion 252 of the first slider 25 backward. When the second inclined surface 241 of the lifter block 24 is fully engaged with the first inclined surface 254 of the side portion 252 of the first slider 25, the rear surface of the first slider 25 is flush with the rear surface of the narrow portion 232 of the pressing plate 23. Similarly, the settings of the first inclined surface 254 and the second inclined surface 241 facilitate the removal of the lifter block 24 from the receiving space and its disengagement from the front surface of the side portion 252 of the first slider 25. During the process of the lifter block 24 being removed from the receiving space, the side portion 252 of the first slider 25 moves forward under the pushing of the elastic member 26. Since the two side portions 252 of the first slider 25 move forward simultaneously under the pushing of the elastic member 26, the entire first slider 25 will move forward.

[0031] The following briefly describes the molding method of the injection molded part 10: (1) The horizontal portions 121 of the five conductive terminals 12 are sequentially placed in the terminal positioning grooves of the pressure plate 23. At this time, a part of the protruding portion 123 on the rear side of the vertical portion 122 of the conductive terminal 12 is placed in the first terminal receiving groove 271 of the inner mold insert 27; (2) The second slider 28 moves forward until the second slider 28 abuts against the rear surface of the narrow portion 232 from the rear to the front. At this time, another part of the protruding portion 123 on the rear side of the vertical portion 122 of the conductive terminal 12 is placed in the second terminal receiving groove 281 of the second slider 28; (3) The lifter block 24 is inserted into the receiving space, and the first slider 25 moves backward under the pushing of the lifter block 24 until the rear surface of the first slider 25 abuts against the front surface of the second slider 28 and the front surface of the inner mold insert 27. At this time, the protruding portion 123 on the front side of the vertical portion 122 of the conductive terminal 12 is placed in the third terminal receiving groove 253 of the middle portion 251 of the first slider 25; (4) The upper mold core 21 and the lower mold core 22 are clamped, and injection molding is performed into the cavity formed by the upper mold core 21 and the lower mold core 22 to form the injection molded part 10.

[0032] The following briefly describes the method for the injection molded part 10 to be separated from the injection mold 20: (1) Remove the upper mold core 21; (2) Move the two lifter blocks 24 out of the receiving space from the bottom to the top. The two side portions 252 of the first slider 25 move forward under the pushing of the elastic member 26. At this time, the protruding portion 123 on the front side of the vertical portion 122 of the conductive terminal 12 is separated from the third terminal receiving groove 253 of the middle portion 251 of the first slider 25; (3) Move the second slider 28 backward. At this time, the protruding portion 123 on the rear side of the vertical portion 122 of the conductive terminal 12 is separated from the second terminal receiving groove 281 of the second slider 28; (4) Take out the injection molded part 10 from the injection mold 20.

[0033] The injection mold of the present invention adopts the first slider 25 and the second slider 28. During injection molding, the first slider 25 and the second slider 28 are used to position the conductive terminal 12. After injection molding is completed, the first slider 25 and the second slider 28 are moved so that the injection molded part 10 can be easily taken out from the injection mold 20.

[0034] The above is only the implementation mode of the present invention, and does not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An injection mold, characterized in that: The injection mold comprises an upper mold core, a lower mold core, a pressure plate, two shovel machine blocks, a first slider, two elastic members, an inner mold insert, and a second slider. The lower mold core is provided with a receiving cavity. The pressure plate is fixed in the receiving cavity. The pressure plate has a terminal positioning groove. The pressure plate comprises a wide portion and a narrow portion. Two receiving spaces are formed on both sides of the narrow portion. The first slider comprises a middle portion and two side portions located on both sides of the middle portion. The middle portion is located at the lower side of the narrow portion. The two side portions are respectively accommodated in the two receiving spaces. The two shovel machine blocks are respectively inserted in the two receiving spaces and installed between the wide portion of the pressure plate and the side portion of the first slider and cooperate with the corresponding side portions. The shovel machine block extends upward out of the receiving space. The two elastic members are respectively abutted against the two side portions. The elastic member and the shovel machine block are located at opposite sides of the side portions. The second slider and the inner mold insert are both abutted against the middle portion. The inner mold insert is located at the lower side of the second slider and abuts against the second slider.

2. The injection mold according to claim 1, characterized in that: The inner mold insert is provided with a first terminal receiving groove extending in the up-down direction, the second sliding block is provided with a second terminal receiving groove extending in the up-down direction, and the first terminal receiving groove is aligned with the second terminal receiving groove in the up-down direction.

3. The injection mold according to claim 2, characterized in that: The middle portion is provided with a third terminal receiving groove extending in the up-down direction, the third terminal receiving groove cooperates with the first terminal receiving groove in the horizontal direction, the third terminal receiving groove cooperates with the second terminal receiving groove in the horizontal direction, and the first terminal receiving groove, the second terminal receiving groove and the third terminal receiving groove together form a terminal receiving space.

4. The injection mold according to claim 3, characterized in that: The side portion is provided with a first inclined surface, and the shovel block is provided with a second inclined surface, and the first inclined surface matches the second inclined surface.

5. The injection mold according to claim 4, characterized in that: The shovel block pushes against the side portion during the process of being inserted into the receiving space, and after the second inclined surface is fully matched with the first inclined surface, the third terminal receiving groove is matched with the first terminal receiving groove in the horizontal direction.

6. The injection mold according to claim 5, characterized in that: When the shovel block is moved out of the receiving space, the second inclined surface is separated from the first inclined surface, the elastic member pushes the side portion, and the third terminal receiving groove is separated from the first terminal receiving groove.

7. The injection mold according to claim 2, characterized in that: The second sliding block can move in a horizontal direction. After the second sliding block moves until it abuts against the narrow portion, the second terminal receiving groove is aligned with the first terminal receiving groove in a vertical direction.

8. The injection mold according to claim 3, characterized in that: The terminal positioning groove extends in a horizontal direction, the terminal positioning groove is used to accommodate the horizontal portion of the terminal, and the terminal accommodating space is used to accommodate the vertical portion of the terminal.

9. The injection mold according to claim 1, characterized in that: After the upper die core and the lower die core are molded together, the shovel block is accommodated in the upper die core and the lower die core.

10. The injection mold according to claim 1, characterized in that: The elastic member is a ball screw.

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