Injection molding machine for preparing outer insulation layer of vehicle wire harness

Abstract

The present invention relates to the field of preparation of wire harness insulation layers, and particularly discloses an injection molding machine for preparing an outer insulation layer of a vehicle wire harness. The injection molding machine comprises an upper mold and a lower mold, which are mounted on an injection molding machine body, wherein a plurality of injection cavities are provided in the middle of the top of the lower mold, a wire harness limiting groove and a plug moving mechanism are provided on the top of the lower mold on two sides of each injection cavity, respectively, an ejector plate which is movable up and down is also provided at an inner bottom end of the wire harness limiting groove, and a plurality of separating columns for line separation are connected to the top of the ejector plate. By mounting the top plate in the wire harness limiting groove, after the vehicle wire harness is placed, a plurality of lines in the wire harness are separated by the plurality of separating columns on the top plate, and one line is placed between two adjacent separating columns, such that the plurality of lines in the wire harness can be separated individually by the plurality of separating columns, which facilitates the subsequent insertion and installation of a terminal at the end of a line into a slot at the end of a plug, thereby improving the accuracy of insertion and reducing the likelihood of disorder.

Description

An injection molding machine for preparing the outer insulation layer of automobile wiring harness Technical Field

[0001] The invention relates to a wire harness processing device, in particular to an injection molding machine used for preparing an outer insulation layer of an automobile wire harness, and belongs to the field of wire harness insulation layer preparation. Background Art

[0002] The automotive wiring harness is the network backbone of the vehicle's electrical circuits; without it, there would be no automotive circuits. A wiring harness is a component that connects wires and cables to contacts (connectors) punched from copper, then crimped with plastic-molded insulators or metal casings to form a bundled connection. To facilitate quick and easy installation and removal of the wiring harness, a plug is often installed at the end of the harness, with an insulating layer placed at the connection to the plug to improve safety.

[0003] When the insulation layer is injected into the connection between the end of the wire harness and the plug, the connection between the terminal and the plug is often unstable, which leads to the entire wire harness being unable to be used normally after the insulation layer is injection molded, resulting in the abandonment of the wire harness and the easy occurrence of defective products in the wire harness processing. It is impossible to effectively detect the connection between the wire harness and the plug during the insulation layer injection molding process.

[0004] Summary of the Invention

[0005] In view of the problems in the prior art, the present invention provides an injection molding machine for preparing the outer insulation layer of an automobile wiring harness.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] An injection molding machine for preparing the external insulation layer of an automobile wiring harness comprises an upper mold and a lower mold mounted on the injection molding machine body. The top middle end of the lower mold is provided with multiple injection cavities. The top of the lower mold is provided with a wiring harness limiting groove and a plug moving mechanism on both sides of each injection cavity. The inner bottom end of the wiring harness limiting groove is also provided with a top plate that can move up and down. The top of the top plate is connected to multiple partition columns for separating the lines.

[0008] Optionally, the interior of the wire harness limiting groove is arranged in an arc shape, and a loading cavity for installing a top plate is opened at the inner bottom end of the wire harness limiting groove, and the top plate can move up and down inside the loading cavity.

[0009] Optionally, the plurality of partition columns on the top of the top plate are located on the same straight line, and a socket is provided at one end of the bottom of the top plate, and a plug rod is installed inside the socket.

[0010] Optionally, a second electric telescopic rod is connected to one side of the insertion rod, an end of the second electric telescopic rod away from the insertion rod is connected to an end plate, and the bottom of the end plate is connected to the top of the connecting seat.

[0011] Optionally, the connecting seat is arranged parallel to the top plate, and the bottom of the connecting seat is vertically connected to a first electric telescopic rod, which is embedded in the interior of the lower mold.

[0012] Optionally, a partition plate is connected to the top of the lower mold between the two wire harness limiting grooves, and a plurality of cameras are installed on the side of the partition plate facing the injection cavity, and each injection cavity corresponds to a camera.

[0013] Optionally, the plug moving mechanism includes a moving seat, and a slide rail for moving the moving seat is provided on the top of the lower mold below the moving seat, and the bottom of the moving seat is slidably installed inside the slide rail through an electric slider.

[0014] Optionally, the movable seat is arranged in a "concave" shape, and a groove for limiting the plug is provided at the bottom middle end of the concave hole above the movable seat, and multiple third electric telescopic rods are connected to both sides of the inner side of the concave hole above the movable seat.

[0015] Beneficial effects of the present invention:

[0016] 1. By installing a top plate inside the wiring harness limit groove, after the automobile wiring harness is placed, multiple separators on the top plate separate the multiple lines inside the wiring harness. A line is placed between two adjacent separators. Multiple separators can separately separate the multiple lines in a wiring harness, which is convenient for the subsequent connection and installation of the terminal at the end of the line and the slot at the end of the plug. The connection accuracy is higher and confusion is less likely to occur.

[0017] 2. By setting up a movable seat, the connection between the wiring harness and the plug during processing is made more convenient and quick, and the accuracy and work efficiency are improved. After the terminal at the end of the line is connected and installed with the plug, the plug drags the wiring harness to move a certain distance, which can apply force to the connection of the terminal, and thus detect whether the terminal is stably connected. If the terminal is not stably connected, it will fall off after being subjected to force. After the movable seat stops moving, the camera corresponding to the injection cavity will take a picture of the connection between the wiring harness and the plug above the injection cavity, and compare the picture with the standard picture preset in the background. If the picture comparison finds that the terminal has fallen off, the background control system will send an alarm signal, and the staff will check and repair the connection before proceeding with the subsequent insulation layer injection molding steps. By detecting the stability of the terminal connection, it is possible to avoid the situation where the wiring harness cannot be used normally after production is completed, and the defective rate of the wiring harness can be reduced. After the external insulation layer of the connection between the wire harness and the plug is injection molded, one end of the wire harness can be pulled, and the plug at the other end can be moved driven by the movable seat, thereby applying a pulling force to the wire harness, which can detect the insulation layer at the connection. If the connection is not completely injection molded during the injection molding process, the remaining gap can be enlarged after the pulling test, which is convenient for staff or cameras to find, thereby improving the safety of wire harness production.

[0018] 3. By setting a top plate that can move up and down, after the production and processing of the outer insulation layer of the wiring harness is completed, the first electric telescopic rod extends upward, driving the top plate to move upward. Since the distance between two adjacent partition columns is smaller than the diameter of the wiring harness, the partition columns can lift the wiring harness upward, so that the wiring harness and the plug are respectively separated from the wiring harness limit groove and the movable seat, which makes it convenient for the staff to quickly remove the wiring harness and improves the removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] FIG1 is a schematic diagram of the overall structure of the present invention.

[0021] FIG2 is a schematic diagram of the lower mold structure of the present invention.

[0022] FIG3 is a schematic diagram of the internal structure of the wiring harness limiting groove of the present invention.

[0023] FIG4 is a schematic diagram of the top plate installation structure of the present invention.

[0024] FIG5 is a schematic diagram of the installation structure of the top plate and the connecting seat of the present invention.

[0025] FIG6 is a schematic structural diagram of the movable seat of the present invention.

[0026] In the figure: 1. Upper mold; 2. Lower mold; 3. Wire harness limit groove; 4. Slide rail; 5. Injection cavity; 6. Moving seat; 7. Top plate; 8. Partition column; 9. Camera; 10. First electric telescopic rod; 11. Loading cavity; 12. Connecting seat; 13. End plate; 14. Second electric telescopic rod; 15. Insert rod; 16. Socket; 17. Groove; 18. Third electric telescopic rod; 19. Partition plate. DETAILED DESCRIPTION

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] Please refer to Figures 1-6, which show an injection molding machine for preparing the external insulation layer of an automotive wiring harness, including an upper mold 1 and a lower mold 2 installed on the injection molding machine body. A plurality of injection cavities 5 are provided at the top middle end of the lower mold 2, and a wiring harness limiting groove 3 and a plug moving mechanism are respectively provided on both sides of each injection cavity 5 at the top of the lower mold 2. A top plate 7 that can move up and down is also provided at the inner bottom end of the wiring harness limiting groove 3, and a plurality of partition columns 8 for line separation are connected to the top of the top plate 7.

[0029] As a technical optimization solution of the present invention, the interior of the wire harness limiting groove 3 is arranged in an arc shape, and a loading cavity 11 for installing the top plate 7 is opened at the bottom end of the interior of the wire harness limiting groove 3, and the top plate 7 can move up and down inside the loading cavity 11.

[0030] As a technical optimization solution of the present invention, the multiple partition columns 8 at the top of the top plate 7 are located in the same straight line, and a socket 16 is provided at one end of the bottom of the top plate 7. The plug-in installation of the socket 16 and the plug-in rod 15 facilitates the removal and replacement of the top plate 7.

[0031] As a technical optimization solution of the present invention, a second electric telescopic rod 14 is connected to one side of the insertion rod 15. The end of the second electric telescopic rod 14 away from the insertion rod 15 is connected to an end plate 13. The bottom of the end plate 13 is connected to the top of the connecting base 12. The provision of the end plate 13 facilitates the installation of the second electric telescopic rod 14, thereby allowing the top plate 7 to move on the top of the connecting base 12.

[0032] As a technical optimization solution of the present invention, the connecting base 12 is arranged parallel to the top plate 7, and the bottom of the connecting base 12 is vertically connected to the first electric telescopic rod 10, which is embedded in the interior of the lower mold 2. The first electric telescopic rod 10 can drive the top plate 7 to move up and down to adapt to different working requirements.

[0033] As a technical optimization solution of the present invention, a partition plate 19 is connected to the top of the lower mold 2 between the two wire harness limiting grooves 3. Multiple cameras 9 are installed on the side of the partition plate 19 facing the injection cavity 5, with each injection cavity 5 corresponding to a camera 9. The cameras 9 can capture and inspect the connection between the terminal and the plug above the injection cavity 5 to prevent the terminal from falling off.

[0034] As a technical optimization solution of the present invention, the plug moving mechanism includes a moving seat 6, and the top of the lower mold 2 is provided with a slide rail 4 for moving the moving seat 6 below the moving seat 6, and the bottom of the moving seat 6 is slidably installed inside the slide rail 4 through an electric slider.

[0035] As a technical optimization solution of the present invention, the movable base 6 is concave in shape. A groove 17 for retaining the plug is provided at the bottom center of the concave hole above the movable base 6. Multiple third electric telescopic rods 18 are connected to both sides of the concave hole above the movable base 6. After the plug to be used is placed inside the movable base 6, the third electric telescopic rods 18 extend to clamp the plug from the side, ensuring stable placement of the plug inside the movable base 6 and ensuring more accurate subsequent installation.

[0036] When the present invention is in use, the corresponding injection molding machine and the corresponding mold are selected according to the type of automotive wiring harness to be processed. The upper mold 1 is correspondingly installed above the lower mold 2. After the upper mold 1 and the lower mold 2 are closed, the injection hole in the upper mold 1 can be used to place the required plastic material into the injection cavity 5 in the lower mold 2.

[0037] When it is necessary to install a corresponding plug at the end of the automobile wiring harness and prepare an insulating layer at the connection with the plug, a plug to be used is placed inside each movable seat 6 using an external preset manipulator or manual operation, and an automobile wiring harness to be processed is placed in each wiring harness limiting groove 3 using an external preset manipulator or manual operation. When the automobile wiring harness is placed, the required terminals are pre-installed at one end of each line inside the end facing the plug, and the terminals can be plugged into and installed with the corresponding slots at the end of the plug. When the automobile wiring harness is placed inside the wiring harness limiting groove 3, the first electric telescopic rod 10 extends upward to push the top plate 7 upward out of the loading cavity 11. The multiple dividing columns 8 on the top plate 7 separate the multiple lines inside the wiring harness, and a line is placed between two adjacent dividing columns 8. The multiple dividing columns 8 can separately separate the multiple lines in a wiring harness, making it easier for the terminals at the end of the subsequent line to be plugged into and installed with the slots at the end of the plug. The plugging accuracy is higher and confusion is less likely to occur.

[0038] When the terminal at the end of the wiring harness needs to be plugged into the plug, the second electric telescopic rod 14 extends, moving the top plate 7 toward one end of the injection cavity 5. The movable base 6 also moves the plug toward the other end of the injection cavity 5. As the top plate 7 moves, the wiring harness is pulled, and the terminal at the end of the wiring harness is locked between the two dividers 8, preventing it from falling out and maintaining a stable position for subsequent plug connection. The plug is restrained within the movable base 6 by the groove 17 and the multiple third electric telescopic rods 18 on either side, preventing it from moving inside the movable base 6 and allowing it to plug stably into the terminal at the end of the wiring harness. After the top plate 7 and the plug move toward each other to a predetermined position, the terminal at the end of the wiring harness inserts into the predetermined slot at the end of the plug. The first electric telescopic rod 10 then retracts downward a certain distance until the top of the divider 8 is below the bottom of the wiring harness. The second electric telescopic rod 14 further retracts, driving the top plate 7 back to its initial position within the wiring harness retaining groove 3. Finally, the first electric telescopic rod 10 retracts downward, driving the top plate 7 into the loading chamber 11 for storage. Next, movable base 6 moves along slide rail 4 toward the end away from injection cavity 5, moving the plug and wiring harness until the connection between the plug and wiring harness is at a predetermined position above injection cavity 5, at which point movable base 6 stops moving. Upper mold 1 moves downward to close with lower mold 2, placing an insulating material inside injection cavity 5. The insulating material is then molded outside the connection between the wiring harness and plug, forming an insulating layer on the exterior of the wiring harness and plug. Once the insulating layer is complete, upper mold 1 moves upward to remove the wiring harness from lower mold 2.

[0039] After the terminal at the end of the line is plugged in and installed with the plug, the plug drags the wiring harness to move a certain distance, which can apply force to the plug-in point of the terminal, thereby detecting whether the terminal is plugged in stably. If the terminal is not plugged in stably, it will fall off after being subjected to force. After the movable seat 6 stops moving, the camera 9 corresponding to the injection cavity 5 takes a picture of the connection between the wiring harness and the plug above the injection cavity 5, and compares the photographed picture with the standard picture preset in the background. If the picture comparison finds that the terminal has fallen off, the background control system will send an alarm signal, and the staff will check and repair the connection before proceeding with the subsequent insulation layer injection molding steps. By detecting the plug-in stability of the terminal, it is possible to avoid the situation where the wiring harness cannot be used normally after production is completed, and the defective rate of the wiring harness can be reduced.

[0040] After the external insulation layer at the connection between the wiring harness and the plug is injection-molded, one end of the wiring harness can be pulled, and the plug at the other end can be moved under the drive of the movable seat 6, thereby applying a pulling force to the wiring harness, and the insulation layer at the connection can be tested. If the connection is not completely injection-molded during the injection molding process, the remaining gap can be enlarged after the pulling test, which is convenient for staff or camera 9 to find, thereby improving the safety of wiring harness production.

[0041] After the outer insulation layer of the wiring harness is processed, the third electric telescopic rod 18 retracts, and the plug loses its clamping force. The first electric telescopic rod 10 extends upward, driving the top plate 7 upward. Because the distance between two adjacent separators 8 is less than the diameter of the wiring harness, the separators 8 can lift the wiring harness upward, allowing the wiring harness and plug to separate from the wiring harness retaining groove 3 and movable seat 6, respectively, facilitating quick and efficient wiring harness removal.

[0042] During processing, the top plate 7 can be replaced according to the type of wiring harness used. Pulling it upward disengages the top plate 7 from the plug 15, making disassembly and installation quick and easy. Furthermore, during the combined injection molding process between the upper and lower molds 1 and 2, the molded insulation layer can encapsulate one end of the wiring harness and one end of the plug, ensuring sufficient insulation safety for subsequent use. During the injection molding process, both ends of the wiring harness and the plug can extend above the injection cavity 5, ensuring adequate insulation coverage.

[0043] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An injection molding machine for preparing the outer insulation layer of an automobile wiring harness, comprising an upper mold (1) and a lower mold (2) mounted on a body of the injection molding machine, characterized in that: A plurality of injection cavities (5) are arranged at the middle of the top of the lower mold (2), and a wiring harness limiting groove (3) and a plug moving mechanism are arranged on both sides of each injection cavity (5) at the top of the lower mold (2), and a top plate (7) that can move up and down is also arranged at the bottom of the wiring harness limiting groove (3), and a plurality of partition columns (8) for separating lines are connected to the top of the top plate (7).

2. The injection molding machine for preparing the outer insulation layer of an automobile wiring harness according to claim 1, characterized in that: The interior of the wire harness limiting groove (3) is arranged in an arc shape, and a loading cavity (11) for installing a top plate (7) is provided at the bottom of the interior of the wire harness limiting groove (3), and the top plate (7) can move up and down inside the loading cavity (11).

3. The injection molding machine for preparing the outer insulation layer of the automobile wiring harness according to claim 2, characterized in that: The plurality of partition columns (8) on the top of the top plate (7) are located on the same straight line, and a plug hole (16) is provided at one end of the bottom of the top plate (7), and a plug rod (15) is installed inside the plug hole (16).

4. The injection molding machine for preparing the outer insulation layer of the automobile wiring harness according to claim 3, characterized in that: One side of the insertion rod (15) is connected to a second electric telescopic rod (14), one end of the second electric telescopic rod (14) away from the insertion rod (15) is connected to an end plate (13), and the bottom of the end plate (13) is connected to the top of the connecting seat (12).

5. The injection molding machine for preparing the outer insulation layer of the automobile wiring harness according to claim 4, characterized in that: The connecting seat (12) is arranged in parallel with the top plate (7), and the bottom of the connecting seat (12) is vertically connected to a first electric telescopic rod (10), and the first electric telescopic rod (10) is embedded and installed inside the lower mold (2).

6. The injection molding machine for preparing the outer insulation layer of the automobile wiring harness according to claim 5, characterized in that: A partition plate (19) is connected to the top of the lower mold (2) between the two wire harness limiting grooves (3), and a plurality of cameras (9) are installed on the side of the partition plate (19) facing the injection cavity (5), and each injection cavity (5) corresponds to a camera (9).

7. The injection molding machine for preparing the outer insulation layer of an automobile wiring harness according to claim 1, characterized in that: The plug moving mechanism comprises a moving seat (6), a slide rail (4) for moving the moving seat (6) is arranged at the top of the lower mold (2) below the moving seat (6), and the bottom of the moving seat (6) is slidably mounted inside the slide rail (4) via an electric slider.

8. The injection molding machine for preparing the outer insulation layer of the automobile wiring harness according to claim 7, characterized in that: The movable seat (6) is arranged in a "concave" shape, and a groove (17) for limiting the position of the plug is arranged at the middle end of the bottom of the concave hole above the movable seat (6), and a plurality of third electric telescopic rods (18) are connected to both sides of the interior of the concave hole above the movable seat (6).

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