A PCB board pre-embedded injection mold for an adapter module

Abstract

This utility model relates to the field of injection molding. It discloses a PCB board pre-embedded injection mold for an adapter module. The PCB board pre-embedded injection mold includes: a rear mold core, a first sliding mechanism, a second sliding structure, and several inclined ejector mechanisms. The rear mold core has a first stepped groove and a first recessed groove. The side wall of the first stepped groove has a second recessed groove. The first sliding mechanism includes a first sliding seat and several first sliding inserts. Each first sliding insert has a first positioning groove for positioning a first terminal. The second sliding structure includes a second sliding seat and a second sliding insert. The second sliding insert has several second positioning grooves spaced apart for positioning a second terminal. Each inclined ejector mechanism includes an inclined ejector rod. The upper end of the inclined ejector rod has a second stepped groove. The side wall of the second stepped groove has a receiving groove for accommodating the solder pads of the second terminal. The receiving groove and the second positioning groove are arranged opposite to each other. This achieves the positioning and fixing of the first and second PCB boards inside the cavity.

Description

Technical Field

[0001] This utility model relates to the field of injection molding, and in particular to a PCB board pre-embedded injection mold for an adapter module. Background Technology

[0002] An adapter module is a module formed by plugging two power units together and then encapsulating them. It includes an L-shaped injection molded part and two PCB boards. The two PCB boards have the same or different wiring terminals soldered on them, and the interfaces of the two wiring terminals extend to the outside of the L-shaped injection molded part.

[0003] Because both PCBs are embedded inside the L-shaped injection molded part, they are suspended and distributed within the cavity during injection molding. Due to the L-shaped shape of the injection molded part and the limited internal space of the mold core, there is a lack of fixing structures within the cavity to secure the two PCBs. During injection molding, molten material is injected into the cavity, and the molten material inside the cavity easily causes the two PCBs to shift, resulting in poor positioning and fixation of the two PCBs. Utility Model Content

[0004] The purpose of this utility model is to provide a PCB board pre-embedded injection mold for an adapter module, which positions the first PCB board and the second PCB board inside the cavity respectively, and fixes the first PCB board and the second PCB board inside the cavity to avoid displacement during injection molding.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a PCB board pre-embedded injection mold for an adapter module, the adapter module comprising an L-shaped injection molded part, a first PCB board and a second PCB board, the first PCB board and the second PCB board being respectively embedded at both ends of the L-shaped injection molded part, the first PCB board and the second PCB board being respectively provided with a first terminal and a second terminal, the PCB board pre-embedded injection mold comprising: The rear mold core has a first stepped groove and a first recess on its parting surface. The side wall of the first stepped groove has a second recess. The first recess and the second recess are connected in a one-to-one correspondence. The first PCB board is suspended inside the first recess, and the second PCB board is disposed inside the second recess. The first positioning mechanism includes a first positioning seat and a plurality of first positioning inserts. The first positioning seat is slidably disposed on the side of the first groove away from the first stepped groove. The first positioning inserts are spaced apart at the end of the first positioning seat near the first groove. Each first positioning insert has a first positioning groove for positioning the first terminal on its parting surface. The first positioning groove corresponds to the first groove and is disposed opposite to it. The second row structure includes a second row seat and a second row insert. The second row seat is slidably disposed on the side of the first stepped groove away from the first groove. The second row insert is disposed at the end of the second row seat close to the first stepped groove. The parting surface of the second row insert is provided with a plurality of second positioning grooves for positioning the second terminal. Several inclined ejector mechanisms are provided, each of which is configured in correspondence with a transfer module. Each inclined ejector mechanism includes an inclined ejector rod, which is slidably disposed on the rear mold core. A second step groove is provided at the upper end of the inclined ejector rod, and a receiving groove for accommodating the solder pad of the second terminal is provided on the side wall of the second step groove. The receiving groove is disposed opposite to the second positioning groove.

[0006] Preferably, the inner wall of the first groove is provided with a first support structure, and one end of the first support structure is detachably mounted on the first PCB board.

[0007] Preferably, the upper end of the second PCB board is suspended inside the second step groove, the lower end of the second PCB board abuts against the side wall of the second step groove, the second row insert is provided with a second support structure, one end of the second support structure is detachably disposed on the second PCB board, and the center line of the first support structure intersects the center line of the second support structure perpendicularly.

[0008] Preferably, the second row insert has a cooling water passage inside, and the second row seat has an inlet water passage and an outlet water passage inside. The inlet water passage and the outlet water passage are respectively connected to both ends of the cooling water passage, and both the inlet water passage and the outlet water passage are connected to the bottom surface of the second row seat.

[0009] Preferably, the lower surface of the second row insert is coplanar with the plane containing the bottom of the second step groove.

[0010] Preferably, the first support structure includes a mold core insert, one end of which is embedded in the inner wall of the first groove, and the other end of which penetrates the first PCB board in a vertical direction.

[0011] Preferably, the second support structure includes a row pin, one end of which is disposed on the second row insert, and the other end of which penetrates the second PCB board in a horizontal direction.

[0012] Preferably, both the mold core insert and the slide insert include a needle body, a first column, and a second column, which are connected in sequence. The diameters of the needle body, the second column, and the first column decrease sequentially. Both the first PCB board and the second PCB board have through holes, with the first column penetrating through the through hole. The diameter of the second column is larger than the diameter of the through hole.

[0013] Preferably, the first PCB board and the second PCB board are vertically connected, and the first terminal and the second terminal are embedded in the outer wall of the L-shaped injection molded part.

[0014] Preferably, the center lines of the first terminal and the second terminal are arranged parallel to each other, and the orientation of the interface of the first terminal is opposite to the orientation of the interface of the second terminal.

[0015] The beneficial effects of this utility model are as follows: During molding, the front and rear molds open, positioning the first PCB board inside the first groove and the second PCB board inside the second groove. During mold closing, the lower end of the second PCB board is clamped by the second sliding insert and the second stepped groove, fixing the lower end of the second PCB board inside the second groove. This achieves the positioning and fixing of the first and second PCB boards inside the cavity.

[0016] After molding, the contact position between the second row insert and the second PCB board is naturally formed to create an empty space, so as to avoid the material in the high temperature molten state from damaging the second terminal circuit. Attached Figure Description

[0017] The accompanying drawings further illustrate the present invention, but the embodiments in the drawings do not constitute any limitation on the present invention.

[0018] Figure 1 This is a schematic diagram of the structure of a PCB board pre-embedded injection mold provided in an embodiment of the present invention; Figure 2 for Figure 1 A magnified view of a portion of region A in the middle; Figure 3 This is a schematic diagram of the structure of an adapter module provided in an embodiment of the present invention; In the diagram, the markings are as follows: 1: L-shaped injection molded part; 2: First PCB board; 3: Second PCB board; 4: First terminal; 5: Second terminal; 6: Rear mold core; 7: First slide seat; 8: First slide insert; 9: Second slide seat; 10: Second slide insert; 11: Angled ejector pin; 12: First support structure; 13: Second support structure. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0020] It should be noted that, in this utility model, unless otherwise stated, when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or an intervening element may be present simultaneously. When an element is referred to as "connected to" another element, it can be directly connected to the other element or an intervening element may be present simultaneously. The directional terms used, such as "up," "down," "left," and "right," generally refer to... Figure 1 The directions shown are up, down, left, and right. "Inner" and "outer" refer to the inner and outer parts of a specific outline. "Far" and "near" refer to the distance or proximity relative to a particular component.

[0021] like Figures 1-3 As shown in the figure, an embodiment of the present invention provides a PCB board pre-embedded injection mold for an adapter module. The adapter module includes an L-shaped injection molded part 1, a first PCB board, and a second PCB board. The first PCB board and the second PCB board are respectively embedded at both ends of the L-shaped injection molded part 1. The first PCB board and the second PCB board are respectively provided with a first terminal 4 and a second terminal 5. The PCB board pre-embedded injection mold includes: The rear mold core 6 has a first stepped groove and a first recess on its parting surface. The side wall of the first stepped groove has a second recess. The first recess and the second recess are connected in a one-to-one correspondence. The first PCB board is suspended inside the first recess, and the second PCB board is disposed inside the second recess. The first positioning mechanism includes a first positioning seat 7 and a plurality of first positioning inserts 8. The first positioning seat 7 is slidably disposed on the side of the first groove away from the first stepped groove. The first positioning inserts 8 are spaced apart at the end of the first positioning seat 7 near the first groove. Each first positioning insert 8 has a first positioning groove for positioning the first terminal 4 on its parting surface. The first positioning groove corresponds to the first groove and is disposed opposite to it. The second row structure includes a second row seat 9 and a second row insert 10. The second row seat 9 is slidably disposed on the side of the first stepped groove away from the first groove. The second row insert 10 is disposed at the end of the second row seat 9 close to the first stepped groove. The parting surface of the second row insert 10 is provided with a plurality of second positioning grooves for positioning the second terminal 5. Several inclined ejector mechanisms are provided, and each inclined ejector mechanism is configured in correspondence with the adapter module. Each inclined ejector mechanism includes an inclined ejector rod 11, which is slidably disposed on the rear mold core 6. A second step groove is provided at the upper end of the inclined ejector rod 11. A receiving groove for accommodating the solder pad of the second terminal 5 is provided on the side wall of the second step groove. The receiving groove is disposed opposite to the second positioning groove.

[0022] The inner wall of the first groove is provided with a plurality of first support structures 12, and one end of each first support structure 12 can be detachably mounted on the first PCB board. The first PCB board is supported by the first support structure 12, thus suspending the first PCB board inside the first groove.

[0023] The upper end of the second PCB board is suspended inside the second stepped groove, and the lower end of the second PCB board abuts against the side wall of the second stepped groove. The second sliding insert 10 is provided with a second support structure 13, one end of which is detachably mounted on the second PCB board. The center line of the first support structure 12 intersects perpendicularly with the center line of the second support structure 13. The second terminal 5 is positioned by the second positioning groove on the second sliding insert 10. During mold closing, pressure is applied to the second terminal 5 by the second sliding insert 10, causing the lower end of the second PCB board to press against the inner wall of the second stepped groove, thus fixing the second PCB board in the second groove. After molding, the area around the solder pad of the second terminal 5 on the second PCB board will be exposed to the outside of the L-shaped injection molded part 1, facilitating the replacement of the second terminal 5.

[0024] During molding, the front and rear molds open, positioning the first PCB board inside the first groove. The first PCB board is then fixed within the first groove by the first support structure 12. The second PCB board is positioned inside the second groove and fixed within the second groove by the second support structure 13. During mold closing, the lower end of the second PCB board is clamped by the second sliding insert 10 and the second adjusting step groove, thus securing the lower end of the second PCB board within the second groove. This achieves the positioning and fixing of the first and second PCB boards within the cavity.

[0025] The second slide insert 10 has a cooling water channel inside, and the second slide base 9 has an inlet water channel and an outlet water channel inside. The inlet water channel and the outlet water channel are respectively connected to both ends of the cooling water channel, and both the inlet water channel and the outlet water channel are connected to the bottom surface of the second slide base 9. Due to the thin plate structure of the L-shaped injection molded part 1, when the L-shaped injection molded part 1 is completely fixed, the mold opening action of the slide insert will cause the L-shaped injection molded part 1 to tear. The second slide insert 10 contacts the L-shaped injection molded part 1. The temperature of the second slide insert 10 is controlled by the cooling water channel to keep it at a low temperature. The second slide insert 10 accelerates the cooling and fixing of the L-shaped injection molded part 1. This prevents cracks in the L-shaped injection molded part 1 from exposing the second PCB board.

[0026] The lower surface of the second sliding insert 10 is coplanar with the plane containing the bottom of the second step groove. When the mold is closed, the second sliding insert 10 slides close to the second step groove, and one end of the second sliding insert 10 slides into the second step groove. The second step groove and the second sliding insert 10 clamp and fix the lower end of the second PCB board, preventing displacement of the lower end of the second PCB board.

[0027] The first support structure 12 includes a mold core insert, one end of which is embedded in the inner wall of the first groove, and the other end of which penetrates the first PCB board vertically. The mold core insert positions the first PCB board, and the sliding insert cooperates with the first groove to lock the first PCB board, preventing the first PCB board from moving horizontally along the first groove.

[0028] The second support structure 13 includes a positioning pin, one end of which is disposed on the second positioning insert 10, and the other end of which penetrates the second PCB board horizontally. The positioning pin positions the second PCB board, and the positioning pin cooperates with the second groove to lock the second PCB board, preventing the second PCB board from moving vertically along the second groove.

[0029] Both the mold core insert and the slide insert include a needle body, a first pillar, and a second pillar, which are connected sequentially. The diameters of the needle body, the second pillar, and the first pillar decrease sequentially. Both the first and second PCB boards have through holes, with the first pillar passing through the through hole. The diameter of the second pillar is larger than the diameter of the through hole. The second pillar supports the first or second PCB board, and the first pillar positions the first or second PCB board. Since the centerlines of the mold core insert and the slide insert are perpendicular to each other, the mold core insert, in conjunction with a first groove, locks the first PCB board in place, preventing horizontal movement. The slide insert, in conjunction with a second groove, locks the second PCB board in place, preventing vertical movement and ensuring that the positions of the first and second PCB boards remain fixed during injection molding.

[0030] The first PCB board and the second PCB board are vertically connected, and the first terminal 4 and the second terminal 5 are embedded in the outer wall of the L-shaped injection molded part 1. The first PCB board and the second PCB board are electrically connected through a connector, and the first PCB board and the second PCB board inside the L-shaped injection molded part 1 are electrically connected, thus connecting the first terminal 4 and the second terminal 5. Because the first PCB board and the second PCB board are vertically connected, when the first PCB board and the second PCB board are fixed by the mold core insert pin and the slide insert pin respectively, the first PCB board and the second PCB board will not be able to move in the horizontal or vertical direction, thus fixing the first PCB board and the second PCB board inside the cavity.

[0031] The center lines of the first terminal 4 and the second terminal 5 are spaced apart and parallel to each other, and the orientation of the interface of the first terminal 4 is opposite to that of the interface of the second terminal 5. The opposite orientation of the interfaces of the first terminal 4 and the second terminal 5 facilitates wiring between the first terminal 4 and the second terminal 5 at both ends of the adapter module, and the first terminal 4 and the second terminal 5 are located at different heights, so the wiring positions of the two terminals will be staggered by a certain height.

[0032] The technical features of the embodiments described above can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these should all be considered to be within the scope of this specification.

Claims

1. A PCB board pre-embedded injection mold for an adapter module, the adapter module comprising an L-shaped injection molded part, a first PCB board and a second PCB board, the first PCB board and the second PCB board being respectively embedded at both ends of the L-shaped injection molded part, the first PCB board and the second PCB board being respectively provided with a first terminal and a second terminal, characterized in that: The PCB board pre-embedded injection mold includes: The rear mold core has a first stepped groove and a first recess on its parting surface. The side wall of the first stepped groove has a second recess. The first recess and the second recess are connected in a one-to-one correspondence. The first PCB board is suspended inside the first recess, and the second PCB board is disposed inside the second recess. The first positioning mechanism includes a first positioning seat and a plurality of first positioning inserts. The first positioning seat is slidably disposed on the side of the first groove away from the first stepped groove. The first positioning inserts are spaced apart at the end of the first positioning seat near the first groove. Each first positioning insert has a first positioning groove for positioning the first terminal on its parting surface. The first positioning groove corresponds to the first groove and is disposed opposite to it. The second row structure includes a second row seat and a second row insert. The second row seat is slidably disposed on the side of the first stepped groove away from the first groove. The second row insert is disposed at the end of the second row seat close to the first stepped groove. The parting surface of the second row insert is provided with a plurality of second positioning grooves for positioning the second terminal. Several inclined ejector mechanisms are provided, each of which is configured in correspondence with a transfer module. Each inclined ejector mechanism includes an inclined ejector rod, which is slidably disposed on the rear mold core. A second step groove is provided at the upper end of the inclined ejector rod, and a receiving groove for accommodating the solder pad of the second terminal is provided on the side wall of the second step groove. The receiving groove is disposed opposite to the second positioning groove.

2. The PCB board pre-embedded injection mold of the adapter module according to claim 1, characterized in that: The inner wall of the first groove is provided with a first support structure, and one end of the first support structure is detachably mounted on the first PCB board.

3. The PCB board pre-embedded injection mold of the adapter module according to claim 2, characterized in that: The upper end of the second PCB board is suspended inside the second stepped groove, and the lower end of the second PCB board abuts against the side wall of the second stepped groove. The second row insert is provided with a second support structure. One end of the second support structure is detachably mounted on the second PCB board. The center line of the first support structure intersects perpendicularly with the center line of the second support structure.

4. The PCB board pre-embedded injection mold of the adapter module according to claim 1, characterized in that: The second row insert has a cooling water passage inside, and the second row seat has an inlet water passage and an outlet water passage inside. The inlet water passage and the outlet water passage are respectively connected to both ends of the cooling water passage, and both the inlet water passage and the outlet water passage are connected to the bottom surface of the second row seat.

5. The PCB board pre-embedded injection mold of the adapter module according to claim 1, characterized in that: The lower surface of the second row insert is coplanar with the plane containing the bottom of the second step groove.

6. The PCB board pre-embedded injection mold of the adapter module according to claim 3, characterized in that: The first support structure includes a mold core insert, one end of which is embedded in the inner wall of the first groove, and the other end of which penetrates the first PCB board in a vertical direction.

7. The PCB board pre-embedded injection mold of the adapter module according to claim 6, characterized in that: The second support structure includes a row pin, one end of which is disposed on the second row insert, and the other end of which penetrates the second PCB board in a horizontal direction.

8. The PCB board pre-embedded injection mold of the adapter module according to claim 7, characterized in that: Both the mold core insert and the slide insert include a needle body, a first column and a second column, which are connected in sequence. The diameters of the needle body, the second column and the first column decrease in sequence. Both the first PCB board and the second PCB board have through holes. The first column passes through the through hole, and the diameter of the second column is larger than the diameter of the through hole.

9. The PCB board pre-embedded injection mold of the adapter module according to claim 1, characterized in that: The first PCB board is vertically connected to the second PCB board, and the first terminal and the second terminal are embedded in the outer wall of the L-shaped injection molded part.

10. The PCB board pre-embedded injection mold of the adapter module according to claim 1, characterized in that: The center lines of the first terminal and the second terminal are arranged parallel to each other, and the orientation of the interface of the first terminal is opposite to that of the interface of the second terminal.

Images