Automatic riveting device and riveting process for circuit board terminals

Abstract

The present invention discloses an automatic riveting device and riveting process for circuit board terminals, and relates to the field of riveting devices, including a conveyor for conveying circuit boards, wherein a support frame is provided on the top of the conveyor, and electric guide rails are symmetrically provided on the inner side of the conveyor frame; a riveting mechanism arranged on the inner side of the support frame, and used for riveting the terminals onto the circuit board; a correction plate is arranged below the riveting mechanism; and a correction structure for correcting the terminals; when the present invention utilizes the riveting mechanism to assemble the terminals at a preset position on the circuit board, the terminals are positioned and clamped by elastic opening and closing parts to correct the terminals, the opening amplitude of the elastic opening and closing parts is controlled by inflating and deflating an expansion airbag, and the opening amplitude of the elastic opening and closing parts is changed by changing the volume of the expansion airbag to realize the correction of terminals of different sizes, and the correction structure can be flexibly installed, and thus can be used to correct terminals at different installation positions, and can be used in conjunction with a centralized adapter to correct multiple terminals at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field related to riveting devices, and in particular to an automatic riveting device for circuit board terminals and a riveting process. Background Art

[0002] At present, when manufacturers produce circuit boards, they will set terminals for electrically connecting external components on the circuit boards as needed to achieve electrical connection between the circuit boards and external components. For example, the drive unit (such as a motor), display, sensor and other components on a car need to be electrically connected to the control circuit through the terminals on the circuit board.

[0003] At present, some terminals are fixed to the circuit board by riveting. In the actual production process, an assembly mechanism is required to assemble the terminals at the positions on the circuit board where the terminals need to be installed. After the terminals pass through the mounting holes, the terminals are riveted and fixed to the circuit board by a riveting mechanism. However, there are still the following deficiencies when riveting the terminals to the circuit board: when the terminals are assembled on the circuit board, the terminals may be skewed and not necessarily in a vertical state. It is difficult to rivet the skewed terminals correctly on the circuit board. Whether the terminals are correctly riveted on the circuit board affects the transmission of electrical signals or currents by the circuit. Summary of the invention

[0004] In order to solve the defects in the prior art, the present invention provides an automatic riveting device and a riveting process for circuit board terminals.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention discloses an automatic riveting device for circuit board terminals, comprising a conveyor for conveying circuit boards, a support frame is provided on the top of the conveyor, and electric guide rails are symmetrically provided on the inner side of the conveyor frame;

[0007] A riveting mechanism arranged on the inner side of the support frame is used to rivet the terminal onto the circuit board;

[0008] A correction plate is arranged below the riveting mechanism, wherein a plurality of T-shaped mounting holes are provided on the correction plate, and an L-shaped hanging plate is symmetrically arranged outside the T-shaped mounting holes, and a plug-in hole is provided on the L-shaped hanging plate;

[0009] A correction structure for correcting the terminal, the correction structure consisting of a mounting portion used in conjunction with the L-shaped hanging plate and an elastic opening and closing component for fixing the terminal, the mounting portion being mounting component one or mounting component two;

[0010] A centralized adapter provided below the correction plate and used in conjunction with the elastic opening and closing assembly;

[0011] A positioning mechanism for positioning a circuit board.

[0012] As a preferred technical solution of the present invention, the elastic opening and closing assembly is composed of a connecting tube, an elastic opening and closing piece arranged at one end of the connecting tube in an annular distribution manner, and an expansion airbag for controlling the opening range of the elastic opening and closing piece, and the other end of the connecting tube is provided with an annular connecting seat;

[0013] A baffle plate is arranged on the top of the expansion airbag, and a connecting catheter is connected to the interface at the bottom of the expansion airbag.

[0014] As a preferred technical solution of the present invention, the installation component one and the installation component two both include a lower mounting ring plate and a connecting cup for supporting the inflatable airbag, one side of the lower mounting ring plate is provided with an anti-slip cylinder coaxial therewith, the outer side of the anti-slip cylinder is symmetrically provided with a plug-in body that is plugged into the plug-in hole, and the connecting cup is provided with a central hole that can accommodate a connecting catheter to pass through.

[0015] As a preferred technical solution of the present invention, the mounting assembly also includes an upper mounting ring plate for mounting a connecting cup and an annular folding bag arranged between the lower mounting ring plate and the upper mounting ring plate. The upper mounting ring plate is provided with a connecting hole connected to the annular folding bag, an extension tube for accommodating the fluid inside the annular folding bag is provided on the outside of the connecting hole, an elastic extrusion member for squeezing the fluid in the extension tube into the annular folding bag is provided in the extension tube, and the elastic extrusion member is composed of an extrusion body slidably arranged in the extension tube and an extrusion spring for connecting the extension tube and the extrusion body.

[0016] As a preferred technical solution of the present invention, the second mounting assembly also includes an upper mounting ring plate 2 for mounting the connecting cup and a mounting spring arranged between the lower mounting ring plate and the upper mounting ring plate 2, and positioning columns are symmetrically arranged on the top of the upper mounting ring plate 2.

[0017] As a preferred technical solution of the present invention, an annular positioning groove is provided on the outer side of the T-shaped mounting hole, and four arc-shaped positioning members for positioning the extension tube or the positioning column are provided on the inner side of the annular positioning groove.

[0018] As a preferred technical solution of the present invention, the positioning mechanism is composed of a supporting base plate installed on the top of the electric guide rail moving body, a correction bracket for supporting the correction plate, two positioning clamps arranged face to face, and a transmission assembly for driving the positioning clamps. A lifting cylinder is installed on the top of the supporting base plate, and the piston end of the lifting cylinder is connected to the correction bracket.

[0019] As a preferred technical solution of the present invention, the centralized adapter is provided with a connection interface connected to multiple centralized adapters, one end of the connection interface is provided with a regulating valve for connecting to a connecting duct, and the bottom of the centralized adapter is connected to the correction bracket via four support rods, and the connection port at the bottom of the centralized adapter is also provided with a three-way valve that can be connected to an external gas circuit system.

[0020] As a preferred technical solution of the present invention, the riveting mechanism includes a moving component, a double cylinder and a limit bracket driven by the moving component, a guide bracket for installing the double cylinder is provided on one side of the limit bracket, a movable connecting rod is provided on one side of the limit bracket, the lower end of the movable connecting rod is connected to a material picking head via a connecting bracket 1, and a sliding plate is provided at the upper end, the sliding plate is connected to one of the piston ends of the double cylinder, and the other piston end of the double cylinder is connected to a riveting head via a connecting bracket 2, and the limit bracket and the guide bracket are both provided with limit through holes for sliding cooperation with the sliding plate.

[0021] A circuit board terminal riveting process, the above-mentioned circuit board terminal automatic riveting device, its specific steps are as follows:

[0022] Step 1: Determine the correction point. According to the preset terminal position, determine the correction point on the correction plate;

[0023] Step 2: Set up the correction structure and use the installation part to complete the installation of the elastic opening and closing component at the correction point;

[0024] Step 3: Correction preparation, using the external air system and switching the three-way valve to inflate and deflate the expansion airbag to control the opening range of the elastic opening and closing member;

[0025] Step 4: Assemble and correct the terminal, convey the circuit board through the conveyor, fix the circuit board by the positioning mechanism, assemble the terminal at the preset position by the riveting mechanism, and use the elastic opening and closing parts to position and clamp the terminal to correct the terminal;

[0026] Step 5: Riveting: Use a riveting mechanism to rivet the terminal to the circuit board.

[0027] The beneficial effects of the present invention are:

[0028] 1. This device is used for detecting surface defects of products. When the terminal is assembled at a preset position on the circuit board by a riveting mechanism, the terminal is positioned and clamped by an elastic opening and closing piece to correct the terminal. The opening range of the elastic opening and closing piece is controlled by inflating and deflating an expansion airbag. The opening range of the elastic opening and closing piece is changed by changing the volume of the expansion airbag to achieve correction of terminals of different sizes. The correction structure can be flexibly installed and can therefore be used to correct terminals in different installation positions. When used in conjunction with a centralized adapter, multiple terminals can also be corrected at the same time.

[0029] 2. This device is used for product surface defect detection. Force is applied to the anti-skid cylinder and the upper mounting ring plate to squeeze the annular folding capsule to compress it. After the correction structure is installed into the assembly space, the anti-skid cylinder is rotated to align the plug-in body with the plug-in hole. Then the force acting on the anti-skid cylinder is removed to allow the fluid to flow back and the annular folding capsule to recover, driving the upper mounting ring plate 1 and the lower mounting ring plate to press tightly against the correction plate and the L-shaped hanging plate respectively. While the plug-in body is inserted into the plug-in hole, the elastic opening and closing piece extends from the T-shaped mounting hole to complete the installation of the correction structure. This can not only effectively prevent the plug-in body from being separated from the plug-in hole due to vibration and the like, but also facilitate disassembly.

[0030] 3. This device is used for detecting surface defects of products. Force is applied to the anti-skid cylinder and the upper mounting ring plate 2 to squeeze the mounting spring to compress it. After the correction structure is installed into the assembly space, the anti-skid cylinder is rotated to align the plug-in body with the plug-in hole. Then the force acting on the anti-skid cylinder is removed. The elastic force of the mounting spring is used to drive the upper mounting ring plate 1 and the lower mounting ring plate to abut against the correction plate and the L-shaped hanging plate respectively. While the plug-in body is inserted into the plug-in hole, the elastic opening and closing part extends from the T-shaped mounting hole to complete the installation of the correction structure. In addition to being very convenient to install and disassemble, compared with the installation component 1, the structure is simpler and easier to implement.

[0031] 4. This device is used for product surface defect detection. The moving component controls the movement of the limit bracket, and drives the guide bracket connected to the limit bracket to move the riveting head or the material picking head to the appropriate position. The height of the riveting head and the material picking head is controlled by the double cylinder. It is not only convenient for picking up materials, but also can complete the assembly of terminals and terminal riveting operations. Because the riveting head and the material picking head are controlled by the double cylinder, when the riveting head is lifted, the material picking head can move down to pick up materials, thereby reducing the time of terminal assembly and being more efficient.

[0032] 5. This device is used for product surface defect detection. The correction bracket is lifted by the lifting cylinder to move the positioning clamp to a suitable height. The transmission component drives the two positioning clamps to clamp and fix the circuit board transported by the conveyor. It is suitable for fixing circuit boards of different sizes.

[0033] 6. This device is used for detecting defects on the product surface. It uses the cooperation of the arc-shaped positioning piece with the extension tube and the positioning column to position the installation component 1 and the installation component 2. By rotating the installation component 1 and the installation component 2, the plug-in body is aligned with the plug-in hole, which is conducive to the installation of the correction structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0035] Figure 1It is a structural schematic diagram of an automatic riveting device for circuit board terminals and a riveting process of the present invention;

[0036] Figure 2 It is a schematic diagram of the distribution of a riveting mechanism, a correction plate, a correction structure and a positioning mechanism of an automatic riveting device for circuit board terminals and a riveting process of the present invention;

[0037] Figure 3 It is a schematic diagram of the connection structure between the riveting mechanism and the support frame of an automatic riveting device for circuit board terminals and a riveting process of the present invention;

[0038] Figure 4 It is a schematic diagram of a connection structure of a correction plate, a correction structure and a positioning mechanism of an automatic riveting device for circuit board terminals and a riveting process of the present invention;

[0039] Figure 5 It is a schematic diagram of the connection structure of a centralized adapter, a correction bracket and an expansion airbag of an automatic riveting device for circuit board terminals and a riveting process of the present invention;

[0040] Figure 6 The invention relates to an automatic riveting device and riveting process for circuit board terminals. Figure 5 Enlarged view of point A in the middle;

[0041] Figure 7 It is a cross-sectional view of a correction plate of an automatic riveting device for circuit board terminals and a riveting process of the present invention;

[0042] Figure 8 It is a schematic diagram of the connection structure of an installation component and an elastic opening and closing component of an automatic riveting device for circuit board terminals and a riveting process of the present invention;

[0043] Fig. 9 It is a schematic diagram of the disassembly structure of an installation component and an elastic opening and closing component of an automatic riveting device for circuit board terminals and a riveting process of the present invention;

[0044] Fig.10 It is a partial cutaway view of an automatic riveting device for circuit board terminals and an installation assembly of a riveting process according to the present invention;

[0045] Fig.11 It is a schematic diagram of the disassembled structure of the installation component 2 and the elastic opening and closing component of an automatic riveting device for circuit board terminals and a riveting process of the present invention.

[0046] In the figure: 1. conveyor; 2. riveting mechanism; 21. material taking head; 22. movable connecting rod; 23. limit bracket; 24. X-axis module; 25. Y-axis module; 26. guide bracket; 27. sliding plate; 28. double cylinder; 29. ​​riveting head; 3. correction plate; 31. T-shaped mounting hole; 32. annular positioning groove; 33. arc positioning piece; 34. L-shaped hanging plate; 4. support frame; 5. electric guide rail; 6. positioning mechanism; 61. support bottom plate; 62. correction bracket; 63. transmission assembly; 64. positioning clamp; 65. lifting cylinder; 7. support rod; 8. centralized transfer Connector; 81, regulating valve; 9, mounting portion; 91, lower mounting ring plate; 911, anti-skid cylinder; 912, plug-in body; 92, upper mounting ring plate 1; 921, connecting hole; 93, extension cylinder; 94, annular folding bag; 95, elastic extrusion piece; 951, extrusion spring; 952, extrusion body; 96, upper mounting ring plate 2; 97, positioning column; 98, mounting spring; 99, connecting cup; 10, elastic opening and closing component; 101, inflation airbag; 102, connecting cylinder; 103, elastic opening and closing piece; 104, annular connecting seat; 105, baffle plate; 106, connecting catheter. DETAILED DESCRIPTION

[0047] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0048] Example: Figure 1-6 As shown, the present invention is an automatic riveting device for circuit board terminals, comprising a conveyor 1 for conveying circuit boards, a support frame 4 is provided on the top of the conveyor 1, and an electric guide rail 5 is symmetrically provided on the inner side of the frame of the conveyor 1;

[0049] The riveting mechanism 2 provided inside the support frame 4 is used to rivet the terminal onto the circuit board;

[0050] A correction plate 3 is arranged below the riveting mechanism 2, and a plurality of T-shaped mounting holes 31 are provided on the correction plate 3, and L-shaped hanging plates 34 are symmetrically arranged on the outer sides of the T-shaped mounting holes 31, and plug holes are provided on the L-shaped hanging plates 34; an assembly space capable of accommodating the mounting portion 9 is formed between the correction plate 3 and the two L-shaped hanging plates 34; the correction plate 3 is replaceable, and the distribution of the T-shaped mounting holes 31 and the L-shaped hanging plates 34 thereon can be specifically designed according to circuit boards with different usage requirements.

[0051] A correction structure for correcting the terminal, the correction structure is composed of a mounting portion 9 used in conjunction with the L-shaped hanging plate 34 and an elastic opening and closing component 10 for fixing the terminal, the mounting portion 9 is a mounting component 1 or a mounting component 2;

[0052] A centralized adapter 8 provided below the correction plate 3 and used in conjunction with the elastic opening and closing assembly 10;

[0053] A positioning mechanism 6 for positioning the circuit board.

[0054] Among them, Figure 8-10 As shown, the elastic opening and closing assembly 10 is composed of a connecting tube 102, an elastic opening and closing member 103 arranged at one end of the connecting tube 102 in an annular distribution manner, and an expansion airbag 101 for controlling the opening range of the elastic opening and closing member 103. The other end of the connecting tube 102 is provided with an annular connecting seat 104;

[0055] A blocking plate 105 is provided on the top of the inflatable airbag 101 , and a connecting conduit 106 is connected to the interface at the bottom of the inflatable airbag 101 . The setting of the blocking plate 105 can avoid direct contact between the terminal and the inflatable airbag 101 , and can prevent the terminal from piercing the inflatable airbag 101 .

[0056] The volume of the expansion bag 101 is changed by inflating and deflating the expansion bag 101 , and the opening range of the elastic opening and closing member 103 is changed by pressing the expansion bag 101 against the elastic opening and closing member 103 , so that it can be suitable for correcting terminals of different sizes.

[0057] Among them, Figure 8 , Fig. 9 and Fig.11 As shown, the installation component 1 and the installation component 2 both include a lower installation ring plate 91 and a connecting cup 99 for supporting the inflatable airbag 101, one side of the lower installation ring plate 91 is provided with an anti-skid cylinder 911 coaxial therewith, the outer side of the anti-skid cylinder 911 is symmetrically provided with a plug-in body 912 which is plugged into the plug-in hole, and the connecting cup 99 is provided with a central hole for accommodating the connecting conduit 106 to pass through; the anti-skid cylinder 911 is provided to prevent skidding and facilitate the installation of the correction structure; the connection between the installation portion 9 and the L-shaped hanging plate 34 is achieved by plugging the plug-in body 912 into the plug-in hole.

[0058] Among them, Figure 8-10 As shown, the mounting assembly 1 also includes an upper mounting ring plate 92 for mounting a connecting cup 99 and an annular folding capsule 94 arranged between a lower mounting ring plate 91 and an upper mounting ring plate 92, the upper mounting ring plate 92 is provided with a connecting hole 921 connected to the annular folding capsule 94, an extension tube 93 for accommodating the internal fluid of the annular folding capsule 94 is provided on the outer side of the connecting hole 921, an elastic extrusion member 95 for squeezing the fluid in the extension tube 93 into the annular folding capsule 94 is provided in the extension tube 93, the elastic extrusion member 95 is composed of an extrusion body 952 slidably arranged in the extension tube 93 and an extrusion spring 951 for connecting the extension tube 93 and the extrusion body 952, the fluid in the annular folding capsule 94 can be water, oil or other fluids.

[0059] Embodiment 1: Pinch the anti-skid cylinder 911 and the upper mounting ring plate 92 by hand (or use tools) to squeeze the annular folding capsule 94 to compress it. At this time, the fluid in the annular folding capsule 94 flows into the extension cylinder 93, causing the extrusion body 952 to rise, and the extrusion spring 951 is in a compressed state. Then, the extension cylinder 93 and the arc-shaped positioning member 33 are used to cooperate to install the correction structure into the assembly space. After the anti-skid cylinder 911 is rotated 90 degrees, the plug-in body 912 is aligned with the plug-in hole. Then, the force acting on the anti-skid cylinder 911 is removed, and the extrusion spring 951 drives the extrusion body 952 to make the fluid flow back, and the annular folding capsule 94 is restored, driving the upper mounting ring plate 92 and the lower mounting ring plate 91 to press tightly against the correction plate 3 and the L-shaped hanging plate 34 respectively. When the plug-in body 912 is inserted into the plug-in hole, the elastic opening and closing member 103 extends from the T-shaped mounting hole 31 to complete the installation of the correction structure. It can not only effectively prevent the plug-in body 912 from being separated from the plug-in hole due to vibration and other reasons, but also facilitate disassembly.

[0060] Among them, Fig.11 As shown, the second mounting assembly also includes an upper mounting ring plate 96 for mounting a connecting cup 99 and a mounting spring 98 disposed between the lower mounting ring plate 91 and the upper mounting ring plate 96 . Positioning posts 97 are symmetrically disposed on the top of the upper mounting ring plate 96 .

[0061] Embodiment 2: Pinch the anti-skid cylinder 911 and the upper mounting ring plate 96 by hand (or use tools), squeeze the mounting spring 98 to compress it, and after the correction structure is installed into the assembly space, rotate the anti-skid cylinder 911 90 degrees to align the plug-in body 912 with the plug-in hole, and then remove the force acting on the anti-skid cylinder 911, and use the elastic force of the mounting spring 98 to drive the upper mounting ring plate 92 and the lower mounting ring plate 91 to abut against the correction plate 3 and the L-shaped hanging plate 34 respectively. When the plug-in body 912 is inserted into the plug-in hole, the elastic opening and closing piece 103 extends from the T-shaped mounting hole 31 to complete the installation of the correction structure. In addition to being very convenient for installation and disassembly, compared with Embodiment 1, the structure is simpler and easier to implement.

[0062] Among them, Figure 4 and Figure 7 As shown, an annular positioning groove 32 is provided on the outer side of the T-shaped mounting hole 31, and four arc-shaped positioning members 33 for positioning the extension tube 93 or the positioning column 97 are provided on the inner side of the annular positioning groove 32. The arc-shaped positioning members 33 cooperate with the extension tube 93 and the positioning column 97 to position the mounting component 1 and the mounting component 2. By rotating the mounting component 1 and the mounting component 2 (rotating 90 degrees), the plug-in body 912 is aligned with the plug-in hole, which is convenient for the installation of the correction structure.

[0063] Among them, Figure 4 and Figure 7As shown, the positioning mechanism 6 is composed of a supporting base plate 61 installed on the top of the moving body of the electric guide rail 5, a correction bracket 62 for supporting the correction plate 3, two positioning clamps 64 arranged face to face, and a transmission assembly 63 for driving the positioning clamps 64. A lifting cylinder 65 is installed on the top of the supporting base plate 61, and the piston end of the lifting cylinder 65 is connected to the correction bracket 62.

[0064] The correction bracket 62 is lifted by the lifting cylinder 65 to move the positioning clamp 64 to a suitable height, and the transmission assembly 63 drives the two positioning clamps 64 to clamp and fix the circuit board transported by the conveyor 1, which is suitable for fixing circuit boards of different sizes.

[0065] Specifically, the transmission assembly 63 includes two bidirectional lead screws rotatably connected to the correction bracket 62, and the nut slide arranged outside the bidirectional lead screw is connected together with the positioning clamp plate 64. The two bidirectional lead screws are connected by a transmission belt transmission, and one end of one of the bidirectional lead screws is connected to the output shaft of the driving motor, and the driving motor is installed on one side of the correction bracket 62. When in use, the bidirectional lead screw connected to it is driven by the driving motor, and the other bidirectional lead screw is driven by the transmission belt, so that the nut slide moves along the bidirectional lead screw with the two positioning clamp plates 64, and the moving directions of the two positioning clamp plates 64 are opposite. The circuit board is clamped and fixed by the positioning clamp plates 64 to facilitate the subsequent assembly and riveting of the terminals. This is one of the embodiments of the transmission assembly 63, and other embodiments may also be adopted.

[0066] Among them, Figure 5 As shown, the centralized adapter 8 is provided with a connection interface connected to multiple centralized adapters 8, one end of the connection interface is provided with a regulating valve 81 for connecting to the connecting conduit 106, and the bottom of the centralized adapter 8 is connected to the correction bracket 62 via four support rods 7, and a three-way valve that can be connected to the external air circuit system is also provided on the connection port at the bottom of the centralized adapter 8. The three-way valve has two remaining ports, one is connected to the inflation air circuit (or directly connected to the inflation equipment, such as an inflation pump), and the other is not connected to the pipeline or connected to the exhaust pipeline. When the pipeline is not connected, the three-way valve is switched to directly discharge the gas in the inflatable airbag 101. When the exhaust pipeline is connected, the circulating gas method can be adopted to save energy, or the gas can be sent to other places for reuse; by opening and closing the regulating valve 81, it is controlled whether it is connected to the centralized adapter 8.

[0067] Among them, Figure 1-3As shown, the riveting mechanism 2 includes a moving component, a double cylinder 28 and a limiting bracket 23 driven by the moving component, one side of the limiting bracket 23 is provided with a guide bracket 26 for installing the double cylinder 28, one side of the limiting bracket 23 is provided with a movable connecting rod 22, the lower end of the movable connecting rod 22 is connected to a material taking head 21 via a connecting bracket 1, and the upper end is provided with a sliding plate 27, the sliding plate 27 is connected to one of the piston ends of the double cylinder 28, and the other piston end of the double cylinder 28 is connected to a riveting head 29 via a connecting bracket 2, and the limiting bracket 23 and the guide bracket 26 are both provided with limiting through holes for sliding cooperation with the sliding plate 27, and the sliding cooperation between the sliding plate 27 and the limiting through holes is utilized to improve the stability of the movable connecting rod 22 during movement.

[0068] The movement of the limit bracket 23 is controlled by the moving component, and the guide bracket 26 connected to the limit bracket 23 is driven to move the riveting head 29 or the material picking head 21 to the appropriate position (the riveting head 29 needs to be moved to the top of the terminal, and the material picking head 21 needs to be moved to the position where the terminal can be sucked). The height of the riveting head 29 and the material picking head 21 is controlled by the double cylinder 28, which not only facilitates material picking, but also completes the terminal assembly and terminal riveting operations. Since the riveting head 29 and the material picking head 21 are controlled by the double cylinder 28, when the riveting head 29 is brought up, the material picking head 21 can move down to pick up materials, thereby reducing the time of terminal assembly and being more efficient.

[0069] Specifically, a visual sensing system can be provided to facilitate the determination of the positions of the riveting head 29 and the material taking head 21 . The specific structure and installation position of the visual sensing system are not limited herein and are therefore not marked in the drawings.

[0070] Specifically, Figure 3 As shown, the moving assembly consists of an X-axis module 24 and a Y-axis module 25, and the limiting bracket 23 is installed at the bottom of the moving body of the X-axis module 24. The limiting bracket 23 is driven by the X-axis module 24 and the Y-axis module 25, and the guide bracket 26 is driven by the limiting bracket 23, thereby driving the riveting head 29 and the material taking head 21.

[0071] A circuit board terminal riveting process, the above-mentioned circuit board terminal automatic riveting device, its specific steps are as follows:

[0072] Step 1: Determine the correction point, and determine the correction point on the correction plate 3 according to the preset terminal position;

[0073] Step 2: Set up the correction structure and use the installation part 9 to complete the installation of the elastic opening and closing component 10 at the correction point;

[0074] Step 3: Correction preparation, using the external air system and switching the three-way valve to inflate and deflate the inflatable airbag 101 to control the opening range of the elastic opening and closing member 103;

[0075] Step 4: Assemble and correct the terminal. The circuit board is conveyed by the conveyor 1. The circuit board is fixed by the positioning mechanism 6. When the terminal is assembled at a preset position by the riveting mechanism 2, the terminal is positioned and clamped by the elastic opening and closing member 103 to correct the terminal.

[0076] Step 5: Riveting: Riveting the terminal to the circuit board through the riveting mechanism 2.

[0077] During operation, the correction structure is installed according to the preset terminal position, and the elastic opening and closing component 10 is installed on the correction plate 3 by using the installation part 9. By opening and closing the regulating valve 81, it is controlled whether it is connected with the centralized adapter 8. The external air path system is used to switch the three-way valve to inflate and deflate the expansion airbag 101 to control the opening amplitude of the elastic opening and closing component 103. The conveyor 1 is used to transport the circuit board. The correction bracket 62 is raised by the lifting cylinder 65 to move the positioning clamp 64 to a suitable height. The transmission component 63 is used to drive the two positioning clamps 64 to clamp and fix the circuit board transported by the conveyor 1. The limit bracket 23 is controlled to move by the moving component, and the guide connected to the limit bracket 23 is driven. The bracket 26 moves the riveting head 29 or the material picking head 21 to the appropriate position, and the height of the riveting head 29 and the material picking head 21 is controlled by the double cylinder 28. The material picking head 21 is used to suck the terminal. The moving component is used in conjunction with the double cylinder 28 to control the material picking head 21 to assemble the terminal on the circuit board. When the terminal is assembled at the preset position, the elastic opening and closing member 103 is used to position and clamp the terminal to correct the terminal to avoid the terminal being skewed. Then the moving component is used in conjunction with the double cylinder 28 to drive the riveting head 29 to rivet the terminal to the circuit board. Then the positioning mechanism 6 releases the circuit board, and the conveyor 1 continues to transport the circuit board forward and brings the circuit board to the next process (for example, to detect the riveting quality).

[0078] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic riveting device for circuit board terminals, characterized in that: include: A conveyor (1) for conveying circuit boards, wherein a support frame (4) is provided on the top of the conveyor (1), and electric guide rails (5) are symmetrically provided on the inner side of the frame of the conveyor (1); A riveting mechanism (2) arranged on the inner side of the support frame (4) and used for riveting the terminal onto the circuit board; A correction plate (3) is arranged below the riveting mechanism (2), the correction plate (3) being provided with a plurality of T-shaped mounting holes (31), L-shaped hanging plates (34) being symmetrically arranged outside the T-shaped mounting holes (31), and the L-shaped hanging plates (34) being provided with plug-in holes; A correction structure for correcting a terminal, the correction structure comprising a mounting portion (9) used in conjunction with an L-shaped hanging plate (34) and an elastic opening and closing component (10) for fixing the terminal, the mounting portion (9) being mounting component one or mounting component two; A centralized adapter (8) disposed below the correction plate (3) and used in conjunction with the elastic opening and closing assembly (10); A positioning mechanism (6) for positioning the circuit board; The elastic opening and closing assembly (10) is composed of a connecting tube (102), an elastic opening and closing piece (103) arranged at one end of the connecting tube (102) in an annular distribution manner, and an expansion airbag (101) for controlling the opening range of the elastic opening and closing piece (103); the other end of the connecting tube (102) is provided with an annular connecting seat (104); A baffle plate (105) is provided on the top of the expansion airbag (101), and a connecting catheter (106) is connected to the interface at the bottom of the expansion airbag (101); The first and second mounting components both comprise a lower mounting ring plate (91) and a connecting cup (99) for supporting an inflatable airbag (101); a coaxial anti-skid cylinder (911) is provided on one side of the lower mounting ring plate (91); a plug-in body (912) that is plugged into and fits with the plug-in hole is symmetrically provided on the outer side of the anti-skid cylinder (911); and a central hole that can accommodate a connecting conduit (106) passing through is provided on the connecting cup (99); The mounting assembly 1 also includes an upper mounting ring plate 1 (92) for mounting the connecting cup (99) and an annular folding capsule (94) arranged between the lower mounting ring plate (91) and the upper mounting ring plate 1 (92); the upper mounting ring plate 1 (92) is provided with a connecting hole (921) connected to the annular folding capsule (94); an extension tube (93) for accommodating fluid inside the annular folding capsule (94) is arranged outside the connecting hole (921); an elastic extrusion member (95) for squeezing the fluid inside the extension tube (93) into the annular folding capsule (94) is arranged inside the extension tube (93); the elastic extrusion member (95) is composed of an extrusion body (952) slidably arranged inside the extension tube (93) and an extrusion spring (951) for connecting the extension tube (93) and the extrusion body (952).

2. The automatic riveting device for circuit board terminals according to claim 1, characterized in that: The second mounting assembly further comprises a second upper mounting ring plate (96) for mounting the connecting cup (99) and a mounting spring (98) disposed between the lower mounting ring plate (91) and the second upper mounting ring plate (96), and positioning columns (97) are symmetrically disposed on the top of the second upper mounting ring plate (96).

3. The automatic riveting device for circuit board terminals according to claim 2, characterized in that: An annular positioning groove (32) is provided on the outside of the T-shaped mounting hole (31), and four arc-shaped positioning members (33) for positioning the extension tube (93) or the positioning column (97) are provided on the inside of the annular positioning groove (32).

4. The automatic riveting device for circuit board terminals according to claim 1, characterized in that: The positioning mechanism (6) is composed of a supporting base plate (61) installed on the top of the moving body of the electric guide rail (5), a correction bracket (62) for supporting the correction plate (3), two positioning clamps (64) arranged face to face, and a transmission component (63) for driving the positioning clamps (64), and a lifting cylinder (65) is installed on the top of the supporting base plate (61), and the piston end of the lifting cylinder (65) is connected to the correction bracket (62).

5. The automatic riveting device for circuit board terminals according to claim 4, characterized in that: The centralized adapter (8) is provided with a connection interface for communicating with a plurality of centralized adapters (8), one end of the connection interface is provided with a regulating valve (81) for connecting to a connecting conduit (106), and the bottom of the centralized adapter (8) is connected to a correction bracket (62) via four support rods (7), and a three-way valve capable of connecting to an external gas circuit system is also provided on the connection port at the bottom of the centralized adapter (8).

6. The automatic riveting device for circuit board terminals according to claim 1, characterized in that: The riveting mechanism (2) comprises a moving assembly, a double cylinder (28) and a limit bracket (23) driven by the moving assembly, wherein a guide bracket (26) for mounting the double cylinder (28) is provided on one side of the limit bracket (23), and a movable connecting rod (22) is provided on one side of the limit bracket (23), wherein the lower end of the movable connecting rod (22) is connected to a material taking head (21) via a connecting bracket 1, and the upper end is provided with a sliding plate (27), wherein the sliding plate (27) is connected to one of the piston ends of the double cylinder (28), and the other piston end of the double cylinder (28) is connected to a riveting head (29) via a connecting bracket 2, and the limit bracket (23) and the guide bracket (26) are both provided with a limit through hole for slidingly cooperating with the sliding plate (27).

7. A circuit board terminal riveting process, comprising the circuit board terminal automatic riveting device according to any one of claims 1 to 6, characterized in that: The specific steps are as follows: Step 1: Determine the correction point. According to the preset terminal position, determine the correction point on the correction plate (3); Step 2: Setting a correction structure, and using the installation portion (9) to complete the installation of the elastic opening and closing component (10) at the correction point; Step 3: Correction preparation, using the external air system and switching the three-way valve to inflate and deflate the expansion bag (101) to control the opening range of the elastic opening and closing member (103); Step 4: Assembling and correcting the terminal, conveying the circuit board by means of the conveyor (1), fixing the circuit board by means of the positioning mechanism (6), assembling the terminal at a preset position by means of the riveting mechanism (2), positioning and clamping the terminal by means of the elastic opening and closing member (103), and correcting the terminal; Step 5: Riveting: Riveting the terminal to the circuit board using the riveting mechanism (2).

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