An integrated injection molding device for an automobile connector

Abstract

The utility model discloses an integral injection molding device of automobile plug connector, the utility model relates to injection molding technical field, including the lower mould base and upper mould base of corresponding, the top of lower mould base is provided with custom mould no.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, specifically to an integrated injection molding device for automotive connectors. Background Technology

[0002] The sealing performance of new energy vehicles directly affects their reliability and service life. In terms of electrical control systems, the insulation protection between the terminals of connectors also depends on the performance of the seals, which can effectively prevent short circuit faults caused by poor contact.

[0003] The connectors used in new energy vehicles generally consist of a metal insert and an insulating plastic layer surrounding the metal insert. In the traditional molding process of connectors in the automotive connector industry, molten plastic particles are often injected into a mold and solidified before the metal insert is inserted into the molded plastic body. However, this traditional process has the problem of substandard sealing after the metal insert is injection molded, which can easily lead to large gaps between the metal insert and the plastic part. It is necessary to add glue later to completely seal it, but existing experiments have shown that this sealing method has poor sealing performance. In addition, this injection molding process requires post-assembly, which increases the number of process steps.

[0004] Therefore, this utility model provides an integrated injection molding device for automotive connectors. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an integrated injection molding device for automotive connectors, which solves the problems of poor sealing and the need for additional assembly steps in traditional injection molding processes.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: an integrated injection molding device for automotive connectors, comprising a lower mold base and an upper mold base corresponding to each other. A custom mold first is provided on the top of the lower mold base, and a custom mold second adapted to the custom mold first is provided on the bottom of the upper mold base. Feeding parts are provided on the left and right sides of the lower mold base. The feeding parts include a fixed frame fixedly connected to the lower mold base. A feeding plate is slidably connected inside the fixed frame. A rack is provided on the inner side of the feeding plate. A gear that meshes with the rack part on the inner side of the feeding plate is also provided inside the fixed frame. A clamping part is provided on each of the two feeding parts. The clamping part includes a U-shaped plate fixedly connected to the top outer side of the feeding plate. A clamping cavity is provided inside the U-shaped plate, and a cylinder is installed on the top outer side of the U-shaped plate. The output shaft of the cylinder extends vertically downward to the clamping cavity and is connected to a pressure plate. A metal insert is clamped between the bottom surface of the clamping cavity and the bottom surface of the pressure plate.

[0007] Preferably, there is a gap between the feeding part and the customized mold one, and injection ports one is provided on both sides of the front side of the customized mold one, and injection port two is provided on the outer top of the upper mold base for injecting molten plastic into the customized mold two.

[0008] Preferably, the feeding plate is a folding plate structure for moving along the internal track of the fixed frame. A shaft is fixedly inserted through the shaft center of the gear. The shaft extends to the outside of the fixed frame and is fixedly connected to a coupling. A forward and reverse motor is installed outside the fixed frame. The output end of the forward and reverse motor is connected to the coupling to drive the coupling to rotate.

[0009] Preferably, the metal insert is composed of several metal pieces of different shapes, and the bottom surface of the clamping cavity is provided with several grooves for placing the several metal pieces. The bottom surface of the pressure plate is provided with protrusions that correspond to the grooves on the bottom surface of the clamping cavity, for pressing against the top of the metal insert.

[0010] Preferably, the top surface of the lower mold base is provided with sliding rods near its four corners, the upper mold base moves through the four sliding rods, and the movement of the upper mold base is controlled by an external moving mechanism. The front and rear sides of the lower mold base are also provided with two T-slots, and the front and rear sides of the upper mold base are respectively provided with limit rods.

[0011] Preferably, the lower mold base and the upper mold base are provided with limiting plates on the front and rear sides. The limiting plates have left and right through limiting cavities on their sides, and the bottom of the limiting plates are provided with two T-shaped mounting plates that are respectively connected to two T-shaped slots. The limiting rod moves through the limiting cavity.

[0012] Beneficial effects

[0013] This utility model provides an integrated injection molding device for automotive connectors. Compared with the prior art, it has the following advantages:

[0014] 1. The integrated injection molding device for automotive connectors moves the upper mold base to the lower mold base during the compression molding process, and places the metal insert in the middle of the first and second custom molds. The metal insert is completely wrapped by the molten plastic injected into the first and second custom molds. After the metal insert and the external plastic solidify as a whole, the finished product is removed to obtain the finished injection molded part of the connector. This injection molding method firmly fixes the metal insert to the plastic and makes it less prone to loosening or falling off, which greatly improves the stability and reliability of the product.

[0015] 2. The integrated injection molding device for automotive connectors allows for the design of the gap between the metal inserts and the plastic layer, resulting in higher reliability of composite product molding, reduced volume of the finished product after injection molding and space required for assembly, and easier molding of slender, complex, and multi-pin metal inserts, reducing potential losses during processing and transportation.

[0016] 3. The integrated injection molding device for automotive connectors clamps and fixes the metal inserts during injection molding using a clamping part, and automatically feeds and unloads them using a feeding part. This enables automated production of the integrated injection molding process, reducing subsequent assembly work and sealing treatment steps. It combines the good conductivity of the metal inserts with the good insulation properties of the plastic layer, improving the overall sealing performance of the connectors and making them more reliable for use in electronic circuits and other fields. Attached Figure Description

[0017] Figure 1 This is a three-dimensional appearance schematic diagram of the present utility model;

[0018] Figure 2 This is a schematic diagram showing the disassembled lower mold base and its front and rear side limiting plates of this utility model;

[0019] Figure 3 This utility model Figure 1 The front view;

[0020] Figure 4 This is a schematic diagram of the lower mold base and the feeding parts on its left and right sides according to this utility model.

[0021] Figure 5 This utility model Figure 4 Enlarged view of section A in the middle;

[0022] Figure 6 This is a schematic diagram showing the disassembled feeding section of this utility model.

[0023] In the diagram: 1. Lower mold base; 11. Custom mold one; 111. Injection port one; 12. Sliding rod; 13. T-slot; 2. Upper mold base; 21. Custom mold two; 22. Injection port two; 23. Limiting rod; 3. Feeding part; 31. Fixing frame; 32. Feeding plate; 33. Gear; 34. Coupling; 4. Clamping part; 41. U-shaped plate; 42. Clamping cavity; 43. Cylinder; 44. Pressure plate; 45. Metal insert; 5. Limiting plate; 51. Limiting cavity; 52. T-shaped mounting plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides two technical solutions:

[0026] Figures 1-6 The first embodiment is shown: an integrated injection molding device for automotive connectors, including a lower mold base 1 and an upper mold base 2 corresponding to each other. A custom mold 11 is provided on the top of the lower mold base 1, and a custom mold 21 adapted to the custom mold 11 is provided on the bottom of the upper mold base 2. Feeding parts 3 are provided on the left and right sides of the lower mold base 1. The feeding parts 3 include a fixing frame 31 fixedly connected to the lower mold base 1. A feeding plate 32 is slidably connected in the fixing frame 31. A rack is provided on the inner side of the feeding plate 32. A gear 33 that meshes with the rack portion on the inner side of the feeding plate 32 is also provided in the fixing frame 31. A clamping part 4 is provided on each of the two feeding parts 3. The clamping part 4 includes a U-shaped plate 41 fixedly connected to the top outer side of the feeding plate 32. A clamping cavity 42 is provided inside the U-shaped plate 41. A cylinder 43 is installed on the top of the outer side of the plate 41. The output shaft of the cylinder 43 extends vertically downward to the clamping cavity 42 and is connected to a pressure plate 44. A metal insert 45 is clamped between the bottom surface of the clamping cavity 42 and the bottom surface of the pressure plate 44. Custom mold 11, custom mold 21 and metal insert 45 are compatible. During molding, the metal insert 45 is located in the middle of custom mold 11 and custom mold 21, and the outside of the metal insert 45 is completely wrapped by the molten plastic injected into custom mold 11 and custom mold 21. After the metal insert 45 and the plastic outside are solidified as a whole, the finished product is taken out to obtain the finished injection molded part of the connector. This injection molding method makes the metal insert firmly fixed on the plastic and is not easy to loosen or fall off, which greatly improves the stability and reliability of the product.

[0027] The feeding section 3 has a gap between it and the custom mold 11. The front sides of the custom mold 11 are provided with injection ports 111. The top of the upper mold base 2 is provided with injection port 22 for injecting molten plastic into the custom mold 21. During injection molding, the custom mold 11 and the custom mold 21 are fully aligned vertically. Molten plastic is then injected into the custom mold 11 and the custom mold 21 through injection ports 111 and 22 respectively, thus forming the metal insert 45 and the plastic into a single piece.

[0028] Furthermore, the feeding plate 32 has a folding plate structure for moving along the internal track of the fixed frame 31. A shaft is fixedly inserted through the shaft center of the gear 33, extending to the outside of the fixed frame 31 and fixedly connected to a coupling 34. A forward and reverse motor is installed outside the fixed frame 31, and the output end of the motor is connected to the coupling 34 to drive the coupling 34 to rotate. The forward and reverse motors drive the gear 33 to rotate clockwise and counterclockwise, causing the gear 33 to move the feeding plate 32 along the track of the fixed frame 31. The feeding plate 32 then moves the clamping part 4 and the metal insert 45, achieving the effect of feeding and unloading materials. Before injection molding, the clamping part 4 and the metal insert 45 are moved... The metal insert 45 can be placed in the designated injection part. During injection, the clamping part 4 keeps the metal insert 45 firmly clamped until the metal insert 45 and its external plastic are solidified as a whole. Finally, the forward and reverse motor drives the gear 33 to drive the feeding plate 32 back to its original position. At the same time, the clamping part 4 and the formed plug are moved to their original positions. According to the overall shape of the feeding part 3, during injection, the feeding part 3 transports the clamping part 4 and the metal insert 45 to the mold position. After injection, the feeding part 3 transports the clamping part 4 and the formed plug to the outside of the lower mold base 1 and the upper mold base 2, so that the metal insert 45 can be put into the clamping part 4 later.

[0029] Furthermore, the metal insert 45 is composed of several metal pieces of different shapes. The bottom surface of the clamping cavity 42 is provided with several grooves for placing several metal pieces. The bottom surface of the pressure plate 44 is provided with protrusions corresponding to the grooves on the bottom surface of the clamping cavity 42, for pressing against the top of the metal insert 45. Placing the metal insert 45 in the grooves on the bottom surface of the clamping cavity 42 and pressing it with the pressure plate 44 helps to fix the spacing of each metal piece in the metal insert 45, improving the injection molding quality of the injection molded part. Before injection molding, the initial position of the clamping part 4 is in the lower mold base. The clamping part 4 is located on the outer left side of the upper mold base 2 and is horizontally positioned at the arc center of the fixed frame 31. The cylinder 43 is located on the left side of the U-shaped plate 41 and the opening of the clamping cavity 42 faces upward, which facilitates the insertion of the metal insert 45 into the clamping cavity 42. Then, the cylinder 43 is started to drive the pressure plate 44 to clamp several metal pieces of the metal insert 45. When injection molding is required, the forward and reverse motors are started to drive the gear 33 to rotate. The gear 33 drives the feeding plate 32 to move along the track of the fixed frame 31 until the clamping part 4 is moved to place the metal insert 45 in the position to be injected.

[0030] Figures 1-2The second embodiment is shown. The main difference from the first embodiment is that: the top surface of the lower mold base 1 is provided with slide rods 12 near its four corners, the upper mold base 2 is movably connected through the four slide rods 12, and the movement of the upper mold base 2 is controlled by an external moving mechanism. The front and rear sides of the lower mold base 1 are also provided with two T-slots 13, and the front and rear sides of the upper mold base 2 are respectively provided with limit rods 23. The limit rods 23 are fixedly installed inside the upper mold base 2 by bolts. The limit rods 23 can be installed and removed.

[0031] Limiting plates 5 are provided on the front and rear sides of the lower mold base 1 and the upper mold base 2. Limiting cavities 51 that extend through the left and right sides are provided on the side of the limiting plate 5. Two T-shaped mounting plates 52 are respectively connected to two T-shaped slots 13 at the bottom of the limiting plate 5. The limiting rod 23 extends through the limiting cavity 51. The limiting rod 23 is cylindrical and its diameter is the same as the width of the limiting cavity 51. When the upper mold base 2 moves during the injection molding process, it drives the limiting rod 23 to move up and down along the inside of the limiting cavity 51, which further restricts the movement of the lower mold base 1 and the upper mold base 2, ensuring that the two always move in a straight line in a fixed direction, and further ensuring the injection molding quality.

[0032] Working principle: Before injection molding, the clamping part 4 is located on the outer left side of the lower mold base 1 and the upper mold base 2, and the clamping part 4 is located at the arc center of the fixed frame 31 in a horizontal position. The cylinder 43 is located on the left side of the U-shaped plate 41, and the opening of the clamping cavity 42 faces upward. The metal insert 45 is placed into the clamping cavity 42. Then, the cylinder 43 is started to drive the pressure plate 44 to clamp several metal pieces of the metal insert 45. When injection molding is required, the forward and reverse motors are started to drive the gear 33 to rotate. The gear 33 drives the feeding plate 32 to move along the track of the fixed frame 31 until it drives the clamping part 4 to move so that the metal insert 45 is placed in the position to be injected.

[0033] During injection molding, the upper mold base 2 is moved by an external moving mechanism to fully align the custom mold 11 and the custom mold 21. Molten plastic is then injected into the custom mold 11 and the custom mold 21 through injection ports 111 and 22, respectively, to integrally mold the metal insert 45 with the plastic. During compression molding, the metal insert 45 is located in the middle of the custom mold 11 and the custom mold 21, and the outside of the metal insert 45 is completely wrapped by the molten plastic injected into the custom mold 11 and the custom mold 21. When the metal insert 45 and the plastic outside it are solidified as a whole, the finished injection molded part of the insert is obtained.

[0034] After injection molding, the forward and reverse motor drives the gear 33 to move the feeding plate 32 back to its original position. At the same time, the clamping part 4 and the molded connector are moved to their original positions. Then, the cylinder 43 is started again so that its output end drives the pressure plate 44 back to its original position. At this time, the molded connector falls out of the clamping cavity 42, completing one injection molding of the connector.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated injection molding device for an automobile connector, comprising a lower mold base (1) and an upper mold base (2) corresponding to each other, characterized in that: The lower mold base (1) is provided with a custom mold one (11) at its top, and the upper mold base (2) is provided with a custom mold two (21) adapted to the custom mold one (11) at its bottom. Feeding sections (3) are provided on the left and right sides of the lower mold base (1). Each feeding section (3) includes a fixed frame (31) fixedly connected to the lower mold base (1). A feeding plate (32) is slidably connected inside the fixed frame (31). A rack is provided on the inner side of the feeding plate (32). The fixed frame (31) also contains a part that meshes with the rack on the inner side of the feeding plate (32). Gear (33) is provided with clamping part (4) on both feeding parts (3). The clamping part (4) includes a U-shaped plate (41) fixedly connected to the top of the outer side of the feeding plate (32). The U-shaped plate (41) has a clamping cavity (42) inside, and a cylinder (43) is installed on the top of the outer side of the U-shaped plate (41). The output shaft of the cylinder (43) extends vertically downward to the clamping cavity (42) and is connected to a pressure plate (44). A metal insert (45) is clamped between the bottom surface of the clamping cavity (42) and the bottom surface of the pressure plate (44).

2. The integral injection molding device for automotive connectors according to claim 1, characterized in that: There is a gap between the feeding part (3) and the custom mold one (11). The front sides of the custom mold one (11) are provided with injection ports one (111), and the top of the upper mold base (2) is provided with injection ports two (22) for injecting molten plastic into the custom mold two (21).

3. The integral injection molding device for automotive connectors according to claim 1, characterized in that: The feeding plate (32) is a folding plate structure for moving along the internal track of the fixed frame (31). The shaft of the gear (33) is fixedly connected to a shaft rod, which extends to the outside of the fixed frame (31) and is fixedly connected to a coupling (34). A forward and reverse motor is installed on the outside of the fixed frame (31), and the output end of the forward and reverse motor is connected to the coupling (34) to drive the coupling (34) to rotate.

4. The integral injection molding device for automotive connectors according to claim 1, characterized in that: The metal insert (45) is composed of several metal pieces of different shapes. The bottom surface of the clamping cavity (42) is provided with several grooves for placing the several metal pieces. The bottom surface of the pressure plate (44) is provided with protrusions that correspond to the grooves on the bottom surface of the clamping cavity (42) for pressing onto the top of the metal insert (45).

5. The integral injection molding apparatus for automotive connectors according to claim 1, characterized in that: The top surface of the lower mold base (1) is provided with slide rods (12) near its four corners. The upper mold base (2) moves through the four slide rods (12) and the movement of the upper mold base (2) is controlled by an external moving mechanism. The front and rear sides of the lower mold base (1) are also provided with two T-shaped grooves (13), and the front and rear sides of the upper mold base (2) are respectively provided with limit rods (23).

6. The integral injection molding apparatus for automotive connectors according to claim 5, characterized in that: Limiting plates (5) are also provided on the front and rear sides of the lower mold base (1) and the upper mold base (2). The limiting plate (5) has a left-right through limiting cavity (51) on its side, and two T-shaped mounting plates (52) are respectively connected in two T-shaped grooves (13) at the bottom end of the limiting plate (5). The limiting rod (23) moves through the limiting cavity (51).

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