A molding process and production line for connectors

Abstract

The application relates to the field of connector manufacturing, in particular to a forming process and production line of a connector, which comprises the following steps: terminal stamping and embedding: metal sheet materials are stamped to form first terminal material strips and second terminal material strips; the first terminal material strips and the second terminal material strips are conveyed in a perpendicular mode, and the first terminal material strips and the second terminal material strips are embedded by being subjected to splicing, shearing and pressing operations to form material strips with terminal assemblies and then are conveyed; base forming and guided conveying: plastic master batches are subjected to injection molding to form plastic bases; terminal assembly electroplating and cutting: the terminal assembly material strips are subjected to electroplating treatment, and the terminal assemblies after the electroplating treatment are cut from the material strips; riveting forming: the terminal assemblies and the plastic bases are respectively conveyed and automatically riveted to form the connector. The method can improve the production of the connector in the aspects of the conductive performance and the automation degree, and realizes efficient and high-quality production of the connector forming process.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of connector manufacturing, in particular to a forming process and production line of a connector. BACKGROUND

[0002] Connectors play a crucial role in the field of electronic devices as components for connecting two or more electronic devices. With the continuous development of electronic technology, various electronic devices have become increasingly powerful, and the demand for connectors has also grown. Different types of connectors, such as board-to-board connectors, wire-to-board connectors, etc., are widely used in various electronic devices to achieve the transmission of current, signals, or data between devices. The application of these connectors enables the various parts of electronic devices to work together, greatly improving the performance and reliability of electronic devices and driving the development of the entire electronic industry. There is a connector on the market that is applied to high-end electronics, which includes a base and a terminal inserted into the base, and can achieve stable connection of the terminal and the plastic base to realize the conductive function of the connector. Specifically, the production and processing of components are carried out first, mainly through an injection molding machine to integrally form a plastic base with a slot and a solder pin, and through a punch machine to integrally form a terminal with a plurality of pin leads and contact pads, adjacent contact pads are arranged side by side and form a gap between each other, and the plastic base and the terminal can be simultaneously produced and processed. The pin leads of the terminal are inserted into the solder pin at the bottom of the plastic base, and extend out of the lower surface of the base for contact with the leads of the circuit board, and the contact pads are located in the slot of the plastic base. When other terminals are inserted into the slot of the terminal, the contact pads are in contact with the other terminals, thereby realizing the conduction function of the connector and other terminals. However, the existing connector manufacturing method has obvious defects. On the one hand, especially in some miniaturized and high-density design high-speed signal transmission scenarios, in a very limited accommodation space, the existing connector has a too large spacing between adjacent contact pads of the terminal, which leads to increased signal attenuation and reflection, reduces signal integrity, and due to the weak structure of the terminal, the terminal is easily squeezed and deformed during assembly, resulting in insufficient conductive performance of the existing connector. On the other hand, the degree of automation is low, and to a great extent, manual operation is required. After the base is separated from the mold and falls down, the collected terminals and bases need to be inserted one by one by manual operation. This way not only wastes a lot of manpower, but also leads to low efficiency of the entire manufacturing process. SUMMARY

[0003] In order to improve the conductive performance and automation degree of the produced connector and realize efficient and high-quality production of the connector forming process, the present application provides a forming process and production line of a connector.

[0004] In a first aspect, the application provides a connector forming process, comprising the following steps: terminal stamping and embedding: stamping a metal sheet material to form a first terminal material strip and a second terminal material strip; the first terminal material strip and the second terminal material strip are conveyed in a perpendicular manner, and then inserted, cut and pressed to form a terminal assembly material strip; base forming and guided conveying: a plastic base is formed by injection molding of plastic master batches, and the formed plastic base is conveyed in an open upward posture; terminal assembly electroplating and cutting: the terminal assembly material strip is electroplated, and the electroplated terminal assembly is cut from the material strip and then transferred; riveting forming: the terminal assembly and the plastic base are conveyed and automatically riveted to form a connector; By adopting the above technical scheme, first, in the terminal stamping and embedding step, the metal sheet material is stamped to form a first terminal material strip and a second terminal material strip, and then conveyed in a perpendicular manner to form a terminal assembly material strip after insertion, cutting and pressing. By processing the material strip in the form of a double terminal, compared with the existing single terminal processing which only needs to be punched once to directly perform subsequent electroplating and riveting processes, the first terminal material strip and the second terminal material strip are conveyed in a perpendicular manner to form a terminal assembly material strip after a series of operations such as insertion, cutting and pressing. This can realize automatic operation, improve processing efficiency, and the double-terminal two-in-one terminal assembly structure can also enhance the conductivity of the terminal. In the base forming and guided conveying step, the plastic base is formed by injection molding of plastic master batches, and the formed plastic base is conveyed in an open upward posture. The injection molding machine can automatically cut off the injection channel and guide the posture at the discharge end, avoiding the need for manual intervention in the existing method. This not only improves the accuracy and stability of production, but also realizes automatic operation. The terminal assembly electroplating and cutting step cuts and transfers the material strip after electroplating, ensuring the continuity of the process, realizing automation, and ensuring the quality and consistency of the terminal assembly. Since the terminal assembly and the plastic base can be produced and conveyed synchronously, in the riveting forming step, the terminal assembly and the plastic base are received after being conveyed respectively, and then a series of operations are performed to automatically rivet the terminal assembly and the plastic base together to form a connector. The entire process eliminates a large amount of manual operation, reduces labor costs, improves production efficiency, solves the problems of weak conductivity and low automation level of the existing process, and realizes efficient and high-quality production of the connector forming process.

[0005] Preferably, the first terminal and the second terminal each include a plurality of pin pins, connecting portions and contact pieces, a separation gap is formed between every two contact pieces, a concave-convex matching structure is arranged between the connecting portion of the first terminal and the connecting portion of the second terminal, and the first terminal and the second terminal can be staggered and inserted to be embedded to form a terminal assembly. By adopting the above technical scheme, the concave-convex matching structure arranged on the connecting portion of the first terminal and the connecting portion of the second terminal can provide accurate positioning and close connection when the first terminal and the second terminal are embedded to form the terminal assembly, effectively preventing the terminal assembly from loosening, falling off and the like during use, and greatly improving the stability and reliability of electrical connection. The separation gap formed between every two contact pieces facilitates the close embedding of the first terminal and the second terminal together, can effectively avoid signal interference between the contact pieces, reduce the influence of crosstalk and electromagnetic interference (EMI), thereby ensuring the quality and accuracy of signal transmission, and can also significantly enhance the electrical performance of the terminal assembly. Preferably, the insertion operation specifically includes that the first terminal strip is conveyed in a horizontal manner, the second terminal strip is conveyed in a vertical manner, the second terminal strip is located above the first terminal strip, the two strips are perpendicular to each other to form an intersection position, the contact pieces of the second terminal are conveyed from the pin pins of the first terminal to the contact pieces at the intersection position, and the contact pieces of the second terminal are inserted into the separation gaps between the contact pieces of the first terminal in a staggered manner, so that the pin pins and the connecting portions of the first terminal correspond to the pin pins and the connecting portions of the second terminal one by one. By adopting the above technical scheme, the first terminal strip is conveyed horizontally, the second terminal strip is conveyed vertically and located above the first terminal strip, and the two strips form an intersection position, which enables the second terminal to be accurately conveyed from the pin pins of the first terminal to the contact pieces. In this conveying direction, the contact pieces of the second terminal can be smoothly inserted into the separation gaps between the contact pieces of the first terminal in a staggered manner, so as to realize the close cooperation of the contact pieces of the first terminal and the second terminal. This close cooperation of the contact pieces can increase the contact area between the first terminal and the second terminal. Since the contact area is increased, the resistance is correspondingly reduced when the current passes through, thereby effectively improving the conductivity of the connector. Moreover, the pin pins and the connecting portions of the first terminal correspond to the pin pins and the connecting portions of the second terminal one by one, which ensures the stability and regularity of the structure of the terminal assembly, lays a good foundation for subsequent electroplating, transfer and riveting forming with a plastic base and the like processes, and helps to improve the efficiency and product quality of the entire connector forming process. Preferably, the shearing operation specifically includes that the connection between the two ends of the second elastic piece terminal and the strip thereof at the intersection position of the first terminal strip and the second terminal strip is cut off, so that the second terminal is separated from the strip thereof and successfully transferred to the first terminal strip. By adopting the above technical scheme, the connection between the two ends of the second elastic piece terminal and the strip thereof at the intersection position of the first terminal strip and the second terminal strip is cut off, so that the second terminal is separated from the strip thereof.Due to the two material belts are conveyed perpendicularly to each other and the completed insertion, the second terminal can be transferred to the first terminal material belt after being separated, realizing the preliminary combination of the terminal. This transfer mode avoids manual operation, improves the automation degree, reduces the labor input, and further improves the efficiency of the entire forming process, and lays a foundation for subsequent pressing and other operations, ensuring that the terminal assembly can be successfully formed, which is conducive to improving the quality and stability of the connector forming process. Preferably, the pressing operation is specifically to press the connecting part of the first terminal and the connecting part of the second terminal at the intersection position of the two material belts from the upper and lower directions respectively, so that the concave-convex matching structure between the connecting parts of the first terminal and the second terminal completes the embedding action to obtain the terminal assembly. By adopting the above technical scheme, the connecting parts of the first terminal and the second terminal are pressed from the upper and lower directions at the intersection position of the two material belts, and the extrusion force in the upper and lower directions is used to promote the interaction of the concave-convex matching structure between the connecting parts, so that the convex part is accurately embedded in the concave part, thereby completing the embedding action to obtain the terminal assembly. This embedding mode can ensure the tightness and stability of the connection between the first terminal and the second terminal, avoid loosening or separation in the subsequent processing or use process, and thereby effectively enhance the structural strength and reliability of the terminal assembly, provide a solid foundation for the subsequent connector to realize good conductive performance after forming, and also be conducive to improving the quality and efficiency of the entire forming process. Preferably, the base forming and guiding conveying steps are specifically to adopt injection molding by using an injection molding machine, and an injection molding channel of the plastic base is automatically cut off at the discharge end of the injection molding machine after the injection molding machine is opened. The discharge end of the injection molding machine can also guide the plastic base to maintain an open-up posture and convey the plastic base in this posture. By adopting the above technical scheme, the plastic base is injection molded by using an injection molding machine, and an injection molding channel of the plastic base is automatically cut off at the discharge end of the injection molding machine after the injection molding machine is opened. This avoids the tediousness of manual cutting and improves the production efficiency. At the same time, the discharge end can also guide the plastic base to maintain an open-up posture and convey the plastic base in this posture. In this way, in the subsequent assembly process, the base posture does not need to be adjusted manually, which facilitates the subsequent direct pre-assembly of the terminal assembly and the base, reduces the manual operation link, further improves the automation degree, and thereby makes the entire connector forming process more efficient and reduces the labor cost. Moreover, this stable open-up posture conveying improves the continuity of processing and is conducive to ensuring the accuracy of subsequent riveting and other processes, thereby improving the forming quality and comprehensive performance such as conductive performance of the connector. Preferably, the riveting forming step adopts an automatic riveting machine, and the terminal assembly and the plastic base are conveyed to the preset positioning platform of the automatic riveting machine. The automatic riveting step is specifically to pre-assemble the terminal assembly and the plastic base and form the connector by riveting and die pressing. By adopting the above technical scheme, an automatic riveting machine is used for riveting and forming in the connector forming process.Because the automatic riveting machine can convey the terminal assembly and the plastic base to the preset positioning platform respectively, and sequentially pre-assemble and rivet and mold, the participation of manual operation is avoided. In the existing process, manual insertion not only wastes a lot of manpower, but also leads to low efficiency of the production process. The automatic operation eliminates these disadvantages caused by manual operation, improves the degree of automation of production, reduces the labor cost, and thus significantly improves the efficiency of the entire connector forming process. Moreover, compared with the assembly error that may occur in manual operation, the automatic riveting machine can more accurately complete the pre-assembly and riveting and molding, making the connection of the terminal assembly and the plastic base more stable, thereby improving the quality and stability of the connector and ensuring better conductivity of the connector. Preferably, the pre-assembly step of the automatic riveting machine specifically comprises: first positioning and fixing the plastic base above the positioning platform, then transferring the terminal assembly above the preset positioning platform, and pre-inserting at least a part of the terminal assembly into the plastic base to complete the pre-assembly. By adopting the above technical solution, the plastic base is first positioned and fixed above the positioning platform, so that the plastic base has a stable position during the pre-assembly process, avoiding shaking or deviation. Then the terminal assembly is transferred above the preset positioning platform, and at least a part of the terminal assembly is pre-inserted into the plastic base to complete the pre-assembly. This step-by-step operation can ensure the accurate relative position of the terminal assembly and the plastic base, improving the accuracy of pre-assembly. Due to the improvement of pre-assembly accuracy, in the subsequent riveting and molding step, the terminal assembly can be more accurately pressed into the insertion slot of the plastic base, ensuring the structural stability of the connector. Moreover, compared with manual operation, this automatic pre-assembly method avoids assembly errors caused by human factors, effectively improves production efficiency and product quality, reduces the rate of defective products, reduces labor costs, and promotes the development of the connector forming process towards automation and high efficiency. Preferably, the riveting and molding step of the automatic riveting machine specifically comprises: riveting by driving the stamping head to press the pre-assembled terminal assembly into the insertion slot of the plastic base, finally forming the connector, and transferring the connector from the preset positioning platform to the finished product area. By adopting the above technical solution, the pre-assembled terminal assembly is pressed into the insertion slot of the plastic base by driving the stamping head to rivet, which can make the terminal assembly and the plastic base tightly combined, ensuring the stability of the connection between the two, and effectively improving the connection accuracy and reliability compared with manual insertion, thereby improving the overall conductivity of the connector. The process of pressing the stamping head can ensure that the terminal assembly is accurately embedded in the insertion slot of the plastic base, reducing problems such as poor contact caused by loose connection. Then the connector is transferred from the preset positioning platform to the finished product area, realizing the automatic transfer of the formed connector, facilitating the riveting of the next connector, forming a complete automatic production, and improving the efficiency. The entire riveting and molding step is completed by automatic operation, reducing manual intervention and improving the degree of automation, thereby greatly improving the production efficiency and reducing the labor cost.In a second aspect, a forming production line of a connector is provided, which comprises, in sequence according to a processing procedure, a stamping and embedding device, an injection and guiding device, an electroplating and cutting device, and an automatic riveting device. The stamping and embedding device is used to stamp a metal sheet into a first terminal strip and a second terminal strip, respectively, and to embed the first terminal strip and the second terminal strip by inserting, shearing, and pressing to form a terminal assembly strip. The injection and guiding device is used to form a plastic base by injection molding of a plastic master batch, and to guide the molded plastic base to be conveyed in an open-upward posture. The electroplating and cutting device is used to electroplate the terminal assembly strip, and to cut and transfer the electroplated terminal assembly from the strip. The automatic riveting device is used to convey and automatically rivet the terminal assembly and the plastic base to form a connector. By adopting the above technical solution, the stamping and embedding device can stamp a metal sheet into a first terminal strip and a second terminal strip, and form a terminal assembly strip by inserting, shearing, and pressing. This embedding method of different terminal strips can make the structure of the terminal assembly more stable, and compared with a terminal produced by a traditional method, the stable structure can reduce the loosening of the terminal during use, thereby improving the conductivity of the connector. The injection and guiding device can injection mold a plastic base from a plastic master batch, and guide the molded plastic base to be conveyed in an open-upward posture. The open-upward posture facilitates the insertion of the terminal assembly during subsequent automatic riveting, avoids the step of manually adjusting the posture, and improves the degree of automation. The electroplating and cutting device electroplates and cuts the terminal assembly strip. Electroplating can enhance the oxidation resistance of the terminal assembly and prolong its service life. The cutting and transferring prepare for subsequent assembly. The automatic riveting device conveys and automatically rivets the terminal assembly and the plastic base to form a connector. The entire process does not require a large amount of manual intervention, avoids the errors and inefficiencies of manual operation, greatly improves the degree of automation and efficiency of the forming process, reduces labor costs, and makes the forming process of the connector more efficient, stable, and reliable.

[0006] In summary, the present application has at least one of the following beneficial technical effects:

[0007] 1. The first terminal strip and the second terminal strip are conveyed in a perpendicular manner, and are inserted, sheared, and pressed at the intersection to form a terminal assembly. This structure of the terminal assembly is more compact and stable, and enhances the conductivity of the connector. The above embedding method can quickly and conveniently obtain a two-terminal two-in-one terminal assembly, improve the efficiency of production and processing, improve the degree of automation, and enable large-scale production of connectors.

[0008] 2. The plastic base is formed by an injection molding machine, and after the injection molding machine is opened, the injection channel of the plastic base can be automatically cut off at the discharge end, and the plastic base can be guided to maintain an open upward posture for transmission, avoiding manual processing of the injection channel and adjustment of the base posture, and reducing manual operation;

[0009] 3. The terminal assembly and the plastic base are respectively conveyed to a preset positioning platform by an automatic riveting machine, and the connector is automatically riveted by pre-assembly, riveting and molding, etc. to avoid manual insertion operation, thereby improving the automation degree and efficiency of the production process. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a structural diagram of a connector of an embodiment 1 molding process of a connector;

[0011] Figure 2 is a structural diagram of a terminal assembly of an embodiment 1 molding process of a connector;

[0012] Figure 3 is a structural diagram of a molding production line of an embodiment 2 connector.

[0013] BRIEF DESCRIPTION OF DRAWINGS: 1, punching and embedding device; 2, injection molding and guiding device; 3, electroplating and cutting device; 4, automatic riveting device; 5, plastic base; 6, terminal assembly; 61, first terminal; 62, second terminal; 611, pin pin; 612, connecting part; 613, contact sheet; 11, first punching mechanism; 12, second punching mechanism; 13, first laser cutting mechanism; 14, oil pressure mechanism; 21, injection molding machine; 22, guiding mechanism; 221, guide; 222, conveying part; 31, electroplating machine; 32, second cutting mechanism; 41, positioning platform; 42, pre-assembly device; 43, pneumatic cylinder driven molding mechanism; 44, high pressure blowing mechanism; 421, first manipulator; 422, second manipulator. DETAILED DESCRIPTION

[0014] The following will be described in detail in combination with the accompanying drawings Figure 1 The present application is further described in detail.

[0015] Embodiment 1

[0016] The molding process of a connector provided by the embodiment of the present application, with reference to Figure 1 and Figure 2 , including terminal punching and embedding, base forming and guiding transmission, terminal assembly 6 electroplating and cutting, riveting forming and other steps, wherein through the orderly progress of the series of steps, the automatic assembly of the terminal assembly 6 and the plastic base 5 can be realized, the production efficiency is improved, and the conductivity of the connector is improved.

[0017] The first terminal 61 and the second terminal 62 formed according to the process both include pin pins 611, connecting portions 612, and contact sheets 613, and a separation gap is formed between every two contact sheets 613. The connecting portion 612 of the first terminal 61 and the connecting portion 612 of the second terminal 62 are provided with a concave-convex matching structure. Specifically, the upper surface of the connecting portion 612 of the first terminal 61 is provided with a convex, and the lower surface of the connecting portion 612 of the second terminal 62 is provided with a groove matched with the convex. When the connecting portions 612 of the two terminals are correspondingly attached, the pin pins 611 of the first terminal 61 and the second terminal 62 are correspondingly attached, and the contact sheets 613 of the first terminal 61 and the second terminal 62 are in a staggered insertion state and contact each other in a side-by-side manner, so that the first terminal 61 and the second terminal 62 can be embedded to form a terminal assembly 6. One plastic base 5 in the embodiment can embed two terminal assemblies 6, and the two terminal assemblies 6 are embedded in the insertion slots of the base.

[0018] Specifically, in the terminal stamping step, the metal sheet material is stably transported to the first stamping mechanism 11 and the second stamping mechanism 12 by a metal sheet material conveying mechanism. The conveying process can be assisted by a belt conveyor. Both stamping mechanisms stamp the metal sheet material by a die composed of an upper die and a lower die. The upper die is connected with the slide block of the press machine, and the upper die is driven to press down by the press machine. The first stamping mechanism 11 stamps the first terminal material strip on the metal sheet material by the stamping convex and the groove corresponding to the shape of the first terminal 61 arranged on the upper die and the lower die. The second stamping mechanism 12 stamps the second terminal material strip on the metal sheet material by the stamping convex and the groove corresponding to the shape of the second terminal 62 arranged on the upper die and the lower die. After stamping, the material strips are stably conveyed to the next process.

[0019] Specifically, the embedding step of the first terminal material strip and the second terminal 62 is that the first terminal material strip and the second terminal material strip are embedded to form a material strip with a terminal assembly 6 by insertion, shearing, and pressing operations.

[0020] The specific steps of the plugging operation are as follows: the first terminal material belt and the second terminal material belt are respectively conveyed by two conveying mechanisms. The first terminal material belt is conveyed in a horizontal manner on a chain conveyor, and the second terminal material belt is conveyed in a vertical manner on another chain conveyor and is located above the first terminal material belt. The two material belts are perpendicular to each other and form an intersection position. After the two material belts are conveyed to the intersection position by the conveying belts, the contact sheet 613 of the second terminal 62 is conveyed in a direction from the pin pin 611 to the contact sheet 613 of the first terminal 61 according to the conveying direction of the second terminal material belt. The contact sheet 613 of the second terminal 62 is continuously conveyed until it is inserted into the separation gap between the contact sheets 613 of the first terminal 61. Finally, the pin pin 611 and the connecting part 612 of the first terminal 61 correspond to the pin pin 611 and the connecting part 612 of the second terminal 62 one by one, the plugging operation is completed, and the two material belts are temporarily stopped to maintain the state of the plugged terminals for smooth cutting and pressing operations.

[0021] The specific steps of the cutting operation are as follows: after the first terminal material belt and the second terminal material belt are conveyed to the intersection position, the cutting operation is started. The first laser cutting mechanism 13 irradiates the connection between the two ends of the second sheet terminal and the material belt with laser. As the connection is cut off, the second terminal 62 is separated from the material belt and successfully transferred to the first terminal material belt. Thus, the cutting and transferring of the second terminal 62 are completed. At this time, the first terminal 61 and the second terminal 62 at the intersection position of the two material belts are in a state ready for pressing.

[0022] The specific steps of the pressing operation are as follows: the pressure head of the oil pressure mechanism 14 presses the connecting part 612 of the first terminal 61 and the second terminal 62 from the top and bottom directions at the same time. Specifically, the lower pressure head is located at the bottom of the intersection position of the two material belts, and the upper pressure head is aligned with the connecting part 612 from the top of the intersection position. Under the action of continuous and stable pressure, the convex part of the connecting part 612 of the first terminal 61 and the groove of the connecting part 612 of the second terminal 62 form a concave-convex fit. Then, the two pressure heads of the oil pressure mechanism 14 are separated and wait for the next pressing. The embedding action is completed. With the complete embedding of the concave-convex fit structure, the first terminal 61 and the second terminal 62 are tightly connected together. Finally, the required terminal assembly 6 is obtained, and the material belt continues to be conveyed to the electroplating process.

[0023] Specifically, the steps of electroplating and cutting of the terminal assembly 6 are as follows:

[0024] Device preparation: The electroplating machine 31 is prepared in advance, including an electroplating tank, a power supply, a conveying roller assembly, an anode plate made of electroplated metal, and a cathode hanger.

[0025] Assembly hanging: the transfer roller assembly requiring plating mechanism suspends the terminal assembly 6 strip through the cathode hanger in the plating tank.

[0026] Electroplating: power on, under the action of electric field, the plating metal ions are dissolved from the anode plate into the plating solution and then deposited on the surface of the terminal assembly 6. Cutting: the plated terminal assembly 6 is cut from the strip by the second cutting mechanism 32.

[0027] Specifically, in the base forming and guiding conveying step, an injection molding machine 21 is adopted. The injection molding machine 21 includes a hopper, a screw, a heating device, a mold and the like. The plastic master batch enters the screw from the hopper, the screw rotates under the drive of the motor, and the plastic master batch is heated and melted under the action of the heating device, and then is injected into the mold by the screw. The mold has a cavity corresponding to the shape of the plastic base 5, and the open upward plastic base 5 is obtained after the mold of the injection molding machine 21 is opened. The discharge end of the injection molding machine 21 is provided with a rotating blade, which is driven to rotate by a motor and can automatically cut off the injection channel of the plastic base 5. At the same time, the discharge end is also provided with a guiding mechanism 22, which includes a guide 221 and a conveying member 222. The guide 221 is specifically a guide pipe matched with the outer contour of the plastic base 5, and the conveying member 222 is a conveying belt. The guide pipe is in communication with the discharge end, so that the plastic base 5 falls along the guide pipe and falls onto the conveying belt, so that the plastic base 5 always maintains an open upward posture and is conveyed in this posture through the conveying belt.

[0028] Specifically, the riveting forming step adopts an automatic riveting machine, which includes a positioning platform 41, a pre-assembly device 42, a cylinder-driven die pressing mechanism 43 and a high-pressure air blowing mechanism 44. The pre-assembly device 42 includes a first mechanical hand 421 and a second mechanical hand 422. The feeding end of the conveying belt in the guiding mechanism 22 is in communication with the guide pipe. First, the plastic base 5 is conveyed to the conveying belt, then the first mechanical hand 421 moves the plated and cut terminal assembly 6 to the conveying belt, and inserts the terminal assembly 6 into the plastic base 5 to complete the preliminary pre-assembly, and then the second mechanical hand 422 moves the pre-assembled connector to the positioning platform 41 above for positioning and fixing.

[0029] In the riveting and die pressing step, the cylinder-driven die pressing mechanism 43 is adopted, and the riveting of the pre-assembled terminal assembly 6 into the insertion slot of the plastic base 5 is realized by driving the stamping head of the cylinder to press down. Finally, the connector is formed, and the connector is moved from the pre-set positioning platform 41 to the finished product area. The moving device is specifically a high-pressure air blowing mechanism 44. A nozzle is installed on one side of the positioning platform 41, the nozzle is aligned with the positioning platform 41, and the nozzle is electrically connected with a high-pressure air pump, so that the air pump runs to supply high-pressure airflow to the nozzle, so as to blow the connector on the positioning platform 41 to the opposite side of the nozzle and drop into the product collection bin.

[0030] The implementation principle of the embodiment is:

[0031] First, terminal stamping is carried out, the metal sheet material is stably conveyed to the stamping die by the metal sheet material conveying device through the belt conveyor, the upper die is pressed down by the press driving, the first terminal material belt and the second terminal material belt are stamped on the metal sheet material, and then the material belt is conveyed to the next process by the conveyor belt; then the first terminal material belt and the second terminal 62 are embedded, the two chain conveyors horizontally convey the first terminal material belt and vertically convey the second terminal material belt to the intersection position, so that the second terminal 62 contacts the contact sheet 613 and is inserted into the first terminal 61 contact sheet 613 gap, stops after insertion, and then the laser beam cuts off the connection between the two ends of the second contact sheet terminal and the material belt, so that it is transferred to the first terminal material belt, and then the oil press head extrudes the first and second terminal connecting part 612 from the top and bottom directions, so that the concave-convex matching structure is embedded to obtain the terminal assembly 6 and the material belt is conveyed;

[0032] Then, the electroplating and cutting of the terminal assembly 6 are carried out, the electroplating machine 31 is prepared in advance, the terminal assembly 6 material belt is conveyed into the electroplating tank, the power supply is turned on to make the electroplated metal ions deposit on the surface of the terminal assembly 6, and then the electroplated terminal assembly 6 is cut by the laser cutter at the discharge end of the electroplating machine 31.

[0033] At the same time, the base forming and guiding conveying are carried out, the plastic master batch enters the screw from the hopper of the injection molding machine 21, is melted after heating, and is injected into the mold to obtain the plastic base 5 with the opening upward, the rotating blade at the discharge end automatically cuts off the injection channel, and the guide pipe makes the plastic base 5 keep the posture of the opening upward and fall onto the conveyor belt for conveying;

[0034] Finally, the base and the terminal assembly 6 are riveted and formed, the pre-assembly device 42 of the automatic riveting machine pre-inserts the terminal assembly 6 into the plastic base 5 to complete the pre-assembly, the hydraulic oil cylinder drives the stamping head to press down to press the pre-assembled terminal assembly 6 into the plastic base 5 insertion slot to realize riveting, and finally the high-pressure blowing device blows the connector from the positioning platform 41 to the product collection bin, so that the terminal assembly 6 and the plastic base 5 are automatically assembled through a series of orderly steps, the production efficiency is improved, and the conductivity of the connector is improved.

[0035] Example 2

[0036] The connector forming production line provided in the embodiment includes a stamping and embedding device 1, an injection molding and guiding device 2, an electroplating and cutting device 3, and an automatic riveting device 4 arranged in sequence according to the processing procedures. The devices cooperate with each other to realize the automatic production of the connector, improve the production efficiency and product quality.

[0037] Reference Figure 3Specifically, the stamping and fitting device 1 comprises the first stamping mechanism 11, the second stamping mechanism 12, the first laser cutting mechanism 13 and the oil pressure mechanism 14 in the embodiment 1; the injection and guiding device 2 comprises the injection machine 21 and the guiding mechanism 22 in the embodiment 1; the electroplating and cutting device 3 comprises the electroplating machine 31 and the second cutting mechanism 32 in the embodiment 1; the automatic riveting device 4 comprises the positioning platform 41, the pre-assembly device 42, the cylinder-driven die mechanism 43 and the high-pressure blowing mechanism 44 in the embodiment 1; and the conveying mode between the devices can be replaced by other modes capable of realizing conveying according to actual scenes.

[0038] The implementation principle of the embodiment is that the molding production line realizes the full-automatic process of connector production through the optimized configuration and efficient cooperation of the devices, reduces manual intervention, improves production efficiency and product quality, reduces production cost, and has strong market competitiveness.

[0039] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so that: equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A forming process for a connector, characterized by, The method comprises the following steps: terminal stamping and fitting: stamping a metal sheet into a first terminal strip and a second terminal strip; the first terminal strip and the second terminal strip are conveyed in a perpendicular manner, and are fitted, cut and pressed to form a terminal assembly strip, which is conveyed; base forming and guiding conveying: a plastic base is formed by injection molding, and the formed plastic base is conveyed in an open-upward posture; terminal assembly electroplating and cutting: the terminal assembly strip is electroplated, and the electroplated terminal assembly is cut from the strip and transferred; riveting forming: the terminal assembly and the plastic base are conveyed and automatically riveted to form a connector; The first terminal and the second terminal each comprise a plurality of pin pins, a connecting part and a plurality of contact pieces, and a separation gap is formed between the contact pieces; the connecting part of the first terminal and the connecting part of the second terminal are provided with a concave-convex matching structure, and the first terminal and the second terminal can be fitted to form a terminal assembly; The fitting operation is specifically that the first terminal strip is conveyed in a horizontal manner, the second terminal strip is conveyed in a manner perpendicular to the conveying direction of the first terminal strip, and the second terminal strip is located above the first terminal strip; the two strips are perpendicular to each other to form an intersection position; the contact pieces of the second terminal are conveyed from the pin pins to the contact pieces of the first terminal at the intersection position, and the contact pieces of the second terminal are interlaced and fitted into the separation gaps between the contact pieces of the first terminal, so that the pin pins and the connecting part of the first terminal correspond to the pin pins and the connecting part of the second terminal one by one; The cutting operation is specifically that the connection between the two ends of the second terminal and the strip is cut off at the intersection position of the first terminal strip and the second terminal strip, so that the second terminal is separated from the strip and successfully transferred to the first terminal strip; The pressing operation is specifically that the connecting part of the first terminal and the connecting part of the second terminal at the intersection position of the two strips are pressed from top to bottom, so that the concave-convex matching structure between the connecting part of the first terminal and the connecting part of the second terminal is fitted to obtain a terminal assembly.

2. The forming process of claim 1, wherein, The base forming and guiding conveying step is specifically that an injection molding machine is used for injection molding, and an open-upward plastic base is obtained after the injection molding machine is opened; the injection channel of the plastic base can be automatically cut off at the discharge end of the injection molding machine, and the plastic base can be guided to maintain an open-upward posture and be conveyed in the posture.

3. The forming process of claim 1, wherein, The riveting forming step uses an automatic riveting machine, and the terminal assembly and the plastic base are conveyed to a preset positioning platform of the automatic riveting machine; the automatic riveting step is specifically that the terminal assembly and the plastic base are pre-assembled and riveted to form a connector.

4. The forming process of claim 3, wherein, The pre-assembly step of the automatic riveting machine is specifically that the plastic base is first positioned and fixed above the positioning platform, and then the terminal assembly is transferred above the preset positioning platform and at least a part of the terminal assembly is pre-inserted into the plastic base to complete the pre-assembly.

5. The forming process of claim 3, wherein, The riveting and molding step of the automatic riveting machine is specifically: through driving the stamping head to press down, the pre-assembled terminal assembly is pressed into the insertion slot of the plastic base to realize riveting, finally forming the connector, and the connector is moved from the preset positioning platform to the finished product area.

6. A molding line for connectors, characterized in that, The production line for realizing the molding process of the connector of any one of claims 1-5 is sequentially provided with a stamping and embedding device, an injection molding and guiding device, an electroplating and cutting device, and an automatic riveting device according to the processing procedures, wherein, The stamping and embedding device is used for stamping the metal sheet material to form the first terminal material belt and the second terminal material belt respectively; and the first terminal material belt and the second terminal material belt are embedded by insertion, shearing and pressing to form a material belt with a terminal assembly; The injection molding and guiding device is used for forming a plastic base by injection molding of plastic master granules, and guiding the molded plastic base to be conveyed in an open upward posture; The electroplating and cutting device is used for electroplating treatment of the terminal assembly material belt, and cutting and conveying the terminal assembly after electroplating treatment from the material belt; The automatic riveting device is used for conveying and automatically riveting the terminal assembly and the plastic base to form the connector.

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