Cover plate riveting device for lock cylinder assembly machine

Abstract

The utility model discloses a cover plate riveting device used for a lock cylinder assembly machine, the cover plate riveting device comprises an assembly die, a riveting and jacking assembly and a horizontal riveting cover assembly, the assembly die is used for positioning a lock cylinder, after a sealing cover to be riveted is arranged at the top end of the lock cylinder, the riveting and jacking assembly jacks the lock cylinder upwards to enter a working position of the horizontal riveting cover assembly, and the horizontal riveting cover assembly is used for riveting the lock cylinder. According to the automatic riveting device for the lock cylinder and the sealing cover, automatic and accurate riveting of the lock cylinder and the sealing cover can be achieved, and the assembling efficiency and quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of lock manufacturing technology, specifically to a cover plate riveting device for a lock cylinder assembly machine. Background Technology

[0002] As the core component of a lock, the "riveting of the cover and the lock cylinder" during assembly is a crucial process that determines the quality of lock assembly. Traditional processes rely heavily on manual operation, using tools such as manual riveting pliers to apply pressure to the cover to complete the riveting. This not only results in low production efficiency but also makes it difficult to precisely control the force and angle of manual operation, easily leading to problems such as incomplete riveting, cover deformation, and lock cylinder damage, resulting in poor product yield and stability.

[0003] With the widespread adoption of automation technology in manufacturing, while some cover plate riveting devices for lock cylinder assembly machines have emerged, they still suffer from several shortcomings: First, the lack of a precise lock cylinder positioning structure makes the lock cylinder prone to misalignment during riveting, resulting in insufficient riveting accuracy. Second, the unreasonable design of the power transmission structure leads to significant losses in the conversion and transmission of riveting pressure, limiting riveting efficiency. Third, the disassembly and assembly process of the riveting components is cumbersome, resulting in long changeover times and insufficient flexibility when adapting to different specifications of lock cylinders or covers, making it difficult to adapt to multi-variety, small-batch production scenarios. Therefore, the industry urgently needs a cover plate riveting device for lock cylinder assembly machines that offers "precise positioning, efficient power transmission, convenient disassembly and assembly, and stable riveting quality." Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art.

[0005] This application provides a cover plate riveting device for a lock cylinder assembly machine, including an assembly mold, a riveting top assembly, and a horizontal riveting cover assembly. The assembly mold is used to position and place the lock cylinder. After the cover to be riveted is placed on the top of the lock cylinder, the riveting top assembly lifts the lock cylinder upward and enters the working position of the horizontal riveting cover assembly. The horizontal riveting cover assembly applies riveting pressure to the cover in the horizontal direction to fix the two together.

[0006] The horizontal riveted cover assembly includes an installation unit, an installation plate, a lower plate, a transmission unit, a power unit, and a riveting unit. The installation unit is used to fix the installation plate on an external lock cylinder assembly machine. The lower plate is installed at the bottom of the installation plate by multiple support pillars. The riveting unit is located on the lower plate. The power unit is located on the installation plate. The transmission unit drives the riveting unit to apply riveting pressure to the cover.

[0007] The power unit includes a drive cylinder, a connecting screw, a cylinder connector, and a cylinder connecting plate. The drive cylinder is fixed on the mounting plate, and its piston rod extends downward to be fixed to the connecting screw. The lower end of the connecting screw is threadedly connected to the cylinder connector. The cylinder connecting plate is fixed on the top of the transmission unit and is inserted into the cylinder connector through a connector groove.

[0008] The upper width of both the live joint groove and the cylinder live joint is smaller than the lower width.

[0009] The transmission unit includes a movable plate, a riveting plate, and a riveting groove. The movable plate is connected to the power unit and slides with each support column. The riveting groove is located at the bottom of the lower plate, with both ends extending upward to connect to the top surface of the lower plate. The riveting unit is installed in the riveting groove. The riveting plate is fixed to the bottom of the movable plate, with inclined push plates fixed at both ends. The inclined push plates extend into both ends of the riveting groove to trigger the riveting unit when the riveting plate descends.

[0010] The riveting unit includes a pair of riveting sliders, a pair of contact parts, and a pair of riveting pins. The pair of riveting sliders are respectively fixed to the corresponding contact parts. The pair of contact parts are slidably installed in the riveting groove through a reciprocating slide groove. The pair of riveting pins are installed at the bottom of each riveting slider through a quick-release assembly.

[0011] The contact part includes a sliding block, a groove, and a bearing. The sliding block is slidably installed in a reciprocating groove, and the bearing is rotatably installed in the groove at one end of the sliding block via a rotating shaft.

[0012] The quick-release assembly includes an installation slide, a limiting groove, and a limiting plate. The installation slide passes through the riveting slider from both sides, and its lower outer end communicates with the bottom surface of the riveting slider. The limiting groove is opened on the bottom surface of the riveting slider and communicates with the middle of the installation slide. The limiting plate is installed in the installation slide by fasteners, and one end of the plate has a locking slot. The riveting pin is slidably inserted into the installation slide, and its end is fixed with a locking block for engaging with the locking slot.

[0013] The assembly mold has mounting holes adapted to the lock cylinder.

[0014] The riveting top assembly includes a mounting bracket and a top cylinder. The top cylinder is mounted on an external lock cylinder assembly machine via the mounting bracket and is located below the horizontal riveting cover assembly.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. By using assembly molds (especially the design of mounting holes that are compatible with the lock cylinder), the lock cylinder can be precisely positioned in both the circumferential and axial directions. Combined with the stable lifting action of the riveting and lifting components, the relative positional accuracy of the lock cylinder and the cover during riveting can be ensured, avoiding riveting offset problems. This greatly improves the fit and consistency of the riveted parts, effectively ensuring product yield.

[0017] 2. In the riveting top assembly, the top cylinder is securely installed by the mounting bracket, which can stably and accurately push the lock cylinder to the working position of the horizontal riveting cover assembly. Inside the horizontal riveting cover assembly, the power unit achieves smooth power transmission through the cooperation of "connecting screw + cylinder union + union groove". At the same time, the transmission unit uses the design of "slanted push plate + contact part (including bearing)" to efficiently convert the vertical power into horizontal riveting pressure, greatly reducing power loss, making the riveting action faster and smoother, and significantly improving the overall assembly efficiency.

[0018] 3. The riveting unit adopts quick-release components. Through the cooperation of "installation slide, limiting groove, limiting plate and riveting pin block", the installation and removal of the riveting pin can be completed quickly. When it is necessary to adapt to different specifications of lock cylinders or covers, the changeover time can be greatly shortened, enhancing the adaptability of the device to multi-variety production and effectively reducing the time and economic cost of the production preparation stage.

[0019] 4. The connection structure of each component (such as the special shape matching of "live joint groove and cylinder live joint", "bearing design of contact part", etc.) not only ensures the stability of power transmission, but also reduces friction and wear between components, and extends the service life of the device; at the same time, the modular structural design makes the division of labor of each component clear, which facilitates daily maintenance and troubleshooting, and reduces the time and economic cost of equipment maintenance.

[0020] 5. The device can be deeply integrated with the automation system of the lock cylinder assembly machine to realize the fully automated operation of "lock cylinder positioning → cover placement → riveting completion", reducing the impact of manual operation on riveting quality, while further improving production efficiency and meeting the needs of modern industrialized large-scale production. Attached Figure Description

[0021] Figure 1 This is a perspective view of the cover plate riveting device used in the lock cylinder assembly machine in this application embodiment;

[0022] Figure 2 This is a perspective view of a cover plate riveting device for a lock cylinder assembly machine in an embodiment of this application (without assembly mold and riveting top assembly).

[0023] Figure 3 This is a perspective view of the assembly mold and riveting top assembly in the embodiments of this application;

[0024] Figure 4 This is a perspective view of the horizontal rivet cover assembly in an embodiment of this application;

[0025] Figure 5 This is a partial perspective view of the horizontal rivet cover assembly in an embodiment of this application;

[0026] Figure 6This is a partial perspective view of the horizontal rivet cover assembly in an embodiment of this application;

[0027] Figure 7 This is a partial perspective view of the horizontal rivet cover assembly in an embodiment of this application;

[0028] Figure 8 This is a partial perspective view of the horizontal rivet cover assembly in an embodiment of this application;

[0029] Figure 9 This is a perspective view of the cover and lock cylinder in an embodiment of this application;

[0030] Figure 10 This is a schematic diagram of the riveting state of the cover and lock cylinder in an embodiment of this application.

[0031] Figure Labels

[0032] 100-Cap, 200-Lock Cylinder, 1-Assembly Mold, 2-Riveting Upper Assembly, 21-Mounting Bracket, 22-Upper Cylinder, 3-Horizontal Riveting Cap Assembly, 31-Mounting Plate, 32-Lower Plate, 33-Support Column, 5-Mounting Unit, 51-Fixed Plate, 52-Positioning Plate, 53-Positioning Screw, 54-Limiting Plate, 6-Transmission Unit, 61-Moving Plate, 62-Riveting Plate, 63-Riveting Groove, 64-Angled Push Plate, 7-Power Unit, 71-Drive Cylinder, 72-Connecting screw, 73-Cylinder union, 74-Cylinder connecting plate, 75-Union groove, 8-Riveting unit, 81-Riveting slider, 82-Contact part, 821-Sliding block, 822-Gate, 823-Bearing, 83-Riveting pin, 84-Reciprocating slide groove, 85-Quick release assembly, 851-Mounting slide groove, 852-Restriction groove, 853-Restriction plate, 854-Bayonet, 855-Clamping block, 9-Middle limit block, 10-Side limit block. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0034] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0035] The cover plate riveting device for a lock cylinder assembly machine provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0036] Example 1:

[0037] This application provides a cover plate riveting device for a lock cylinder assembly machine, characterized in that it includes an assembly mold 1, a riveting upper push assembly 2, and a horizontal riveting cover assembly 3. The assembly mold 1 is used to position and place the lock cylinder 200. After the cover 100 to be riveted is placed on the top of the lock cylinder 200, the riveting upper push assembly 2 pushes the lock cylinder 200 upward into the working position of the horizontal riveting cover assembly 3. The horizontal riveting cover assembly 3 applies riveting pressure to the cover 100 in the horizontal direction to fix the two.

[0038] like Figures 1 to 10As shown, due to the aforementioned structure, when the riveting process between the lock cylinder 200 and the cover 100 is initiated, the lock cylinder 200 is first placed in the positioning area of ​​the assembly mold 1 (such as between positioning grooves or limiting blocks). The circumferential and axial positioning of the lock cylinder 200 is achieved through the geometric structure of the mold (such as a cavity matching the outer contour of the lock cylinder 200), ensuring that the lock cylinder 200 does not shift during subsequent actions. Subsequently, manual or automated equipment precisely fastens the cover 100 to be riveted to a preset position on the top of the lock cylinder 200 (such as aligning the holes in the cover 100 with the protrusions in the lock cylinder 200). At this time, the power source (such as a cylinder or hydraulic cylinder) of the riveting top assembly 2 is activated, and its actuating component (such as a push rod) extends upward, pressing against the bottom of the lock cylinder 200 and applying an upward thrust, lifting the lock cylinder 200 together with the cover 100 until the cover 100 is fully entered into the riveting working range of the horizontal riveting cover assembly 3 (this range is preset to the position where the parts of the cover 100 and the lock cylinder 200 to be riveted are directly opposite the riveting unit 8). Finally, the drive mechanism (such as a cylinder or motor) of the horizontal riveting cover assembly 3 is activated, driving its riveting component (such as a riveting block or riveting pin 83) to apply pressure in the horizontal direction to the riveting point of the cover 100 (such as the flange of the edge of the cover 100), causing the riveting part of the cover 100 to undergo plastic deformation and tightly engage with the corresponding structure of the lock cylinder 200 (such as the slot of the lock cylinder 200 housing), thereby completing the fixed connection between the two. The entire process involves a series of actions: “positioning, lifting, and horizontal riveting”, which enables the efficient assembly of the lock cylinder 200 and the cover 100.

[0039] Example 2:

[0040] In this embodiment, in addition to the structural features included in the aforementioned embodiments, the assembly mold 1 is provided with mounting holes adapted to the lock cylinder 200.

[0041] like Figure 3As shown, due to the aforementioned structure, based on Embodiment 1, the mounting holes on the assembly mold 1 are perfectly matched to the outer contour (such as diameter and stepped structure) of the lock cylinder 200. After the lock cylinder 200 is placed in the mounting hole, the inner wall of the hole fits tightly against the outer wall of the lock cylinder 200, achieving circumferential positioning. The depth of the mounting hole matches the distance from the bottom of the lock cylinder 200 to the cover 100 to be riveted, ensuring that when the bottom of the lock cylinder 200 contacts the bottom surface of the mounting hole, the cover 100 is exactly in the initial position to be lifted. When the lock cylinder 200 is placed in the mounting hole, the lower end of the lock cylinder 200 extends out of the mounting hole. The mounting hole, through the dual action of "hole wall positioning + bottom surface support," controls the positioning accuracy of the lock cylinder 200 within the preset tolerance range. In subsequent processes, when the push rod of the riveting and lifting assembly 2 pushes the lock cylinder 200 upward, the inner wall of the mounting hole can effectively constrain the radial sway of the lock cylinder 200, preventing the lock cylinder 200 from tilting during the lifting process. When the lock cylinder 200 is pushed into the working position of the horizontal rivet cover assembly 3, the alignment accuracy between the cover 100 and the riveting unit 8 is greatly improved due to the stable positioning of the lock cylinder 200, which ultimately enables the horizontal riveting force to be accurately applied to the preset riveting point, reducing product defects caused by riveting deviation.

[0042] Example 3:

[0043] In this embodiment, in addition to the structural features of the aforementioned embodiments, the riveting top assembly 2 includes a mounting bracket 21 and a top cylinder 22. The top cylinder 22 is mounted on the external lock cylinder assembly machine via the mounting bracket 21 and is located below the horizontal riveting cover assembly 3.

[0044] like Figure 2 and Figure 3As shown, due to the above-described structure, based on Embodiment 1 or 2, the mounting bracket 21 of the riveting top assembly 2 is fixed to the frame of the external lock cylinder assembly machine by bolts or welding. Its height is adapted to the position of the horizontal riveting cover assembly 3, ensuring that the piston rod axis of the top cylinder 22 is collinear with the central axis of the lock cylinder 200. When the cover 100 is placed on the top of the lock cylinder 200, the control system (such as a solenoid valve) of the top cylinder 22 receives a start signal, compressed air enters the rodless chamber of the cylinder, pushing the piston rod upward. The top block at the top of the piston rod (adapted to the shape of the bottom of the lock cylinder 200) contacts the bottom of the lock cylinder 200 and applies an upward thrust. The extension stroke of the piston rod is precisely controlled by the limit switch of the cylinder or an external sensor, ensuring that when the lock cylinder 200 is lifted to the working position of the horizontal riveting cover assembly 3 (i.e., the riveting part of the cover 100 and the riveting unit 8 of the horizontal riveting cover assembly 3 are on the same horizontal plane), the piston rod stops moving and remains in a tightened state (preventing the lock cylinder 200 from moving downward during riveting). The rigid structure of the mounting bracket 21 (such as steel plate welding or cast iron casting) can counteract the reaction force of the upper cylinder 22 when it is working, and prevent the components from shaking and affecting the lifting accuracy. At the same time, its position adjustability (such as elongated hole connection) makes it easy to adjust the lifting height according to different specifications of lock cylinder 200, and improve the equipment versatility.

[0045] Example 4:

[0046] In this embodiment, in addition to the structural features of the aforementioned embodiments, the horizontal riveting cover assembly 3 includes an installation unit 5, an installation plate 31, a lower plate 32, a transmission unit 6, a power unit 7, and a riveting unit 8. The installation unit 5 is used to fix the installation plate 31 on the external lock cylinder assembly machine. The lower plate 32 is installed at the bottom of the installation plate 31 by multiple support columns 33. The riveting unit 8 is disposed on the lower plate 32. The power unit 7 is disposed on the installation plate 31. The transmission unit 6 drives the riveting unit 8 to apply riveting pressure to the cover 100.

[0047] In this embodiment of the application, the power unit 7 includes a drive cylinder 71, a connecting screw 72, a cylinder connector 73, and a cylinder connecting plate 74. The drive cylinder 71 is fixed on the mounting plate 31, and its piston rod extends downward to be fixed to the connecting screw 72. The lower end of the connecting screw 72 is threadedly connected to the cylinder connector 73. The cylinder connecting plate 74 is fixed on the top of the transmission unit 6 and is inserted into the cylinder connector 73 through a connector groove 75.

[0048] In this embodiment of the application, the upper width of both the live joint groove 75 and the cylinder live joint 73 is smaller than the lower width.

[0049] like Figures 4 to 8As shown, due to the above-described structure, based on the above embodiment, the mounting unit 5 (such as an L-shaped connecting plate) of the horizontal riveting assembly 3 fixes the mounting plate 31 to the crossbeam or column of the external assembly machine with bolts, ensuring the installation stability of the entire assembly. The lower plate 32 is connected to the mounting plate 31 by multiple equal-height support columns 33 (such as four evenly distributed cylindrical support columns 33), forming a stable two-layer frame structure. The support columns 33 also provide guidance for subsequent components. When the lock cylinder 200 is lifted to the working position, the drive cylinder 71 of the power unit 7 (fixed to the top surface of the mounting plate 31) receives a signal, and its piston rod extends downward, driving the connecting screw 72 to move downward synchronously through the threaded connection. The cylinder union 73 (spherical or stepped structure) at the lower end of the connecting screw 72 is inserted into the union groove 75 of the cylinder connecting plate 74 (the union groove 75 and the cylinder union 73 are matched in shape with "narrow at the top and wide at the bottom", forming a mortise and tenon-like fit), which ensures that the two move synchronously and allows for slight angle adjustment to compensate for assembly errors. The cylinder connecting plate 74 is fixed to the top of the transmission unit 6, so the downward thrust of the power unit 7 is transmitted to the transmission unit 6 through the cylinder connecting plate 74, and finally drives the riveting unit 8 to apply riveting pressure to the cover 100 in the horizontal direction. In this structure, the vertical movement of the drive cylinder 71 is converted into the power of the transmission unit 6 through components such as the connecting screw 72 and the union. The special shape of the union groove 75 and the union avoids stress concentration caused by rigid connection, ensuring smooth power transmission and structural durability.

[0050] Example 5:

[0051] In this embodiment, in addition to the structural features of the aforementioned embodiments, the transmission unit 6 includes a movable plate 61, a riveting plate 62, and a riveting groove 63. The movable plate 61 is connected to the power unit 7 and slides with each support column 33. The riveting groove 63 is located at the bottom of the lower plate 32, with both ends extending upward to connect to the top surface of the lower plate 32. The riveting unit 8 is installed in the riveting groove 63. The riveting plate 62 is fixed to the bottom of the movable plate 61, with inclined push plates 64 fixed at both ends. The inclined push plates 64 extend into both ends of the riveting groove 63 to trigger the riveting unit 8 when the riveting plate 62 descends.

[0052] In this embodiment of the application, the riveting unit 8 includes a pair of riveting sliders 81, a pair of contact portions 82, and a pair of riveting pins 83. The pair of riveting sliders 81 are respectively fixed to the corresponding contact portions 82. The pair of contact portions 82 are slidably installed in the riveting groove 63 through a reciprocating slide groove 84. The pair of riveting pins 83 are installed at the bottom of each riveting slider 81 through a quick-release assembly 85.

[0053] like Figures 4 to 8As shown, due to the above-described structure, based on Embodiment 4, the movable plate 61 of the transmission unit 6 is fitted onto multiple support columns 33 (the support columns 33 and the movable plate 61 are fitted with through holes for guidance), and can slide up and down along the support columns 33. When the power unit 7 drives the movable plate 61 to move downward, the rivet plate 62 fixed at the bottom of the movable plate 61 moves downward accordingly, and the inclined push plates 64 (with inclined bottom surfaces) at both ends of the rivet plate 62 gradually extend into the two ends of the rivet groove 63 (a groove that runs through the bottom and bottom of the lower plate 32) at the bottom of the lower plate 32. At this time, the inclined surface of the inclined push plate 64 contacts the inclined surface (or bearing 823) of the contact part 82 in the rivet unit 8. As the rivet plate 62 continues to descend, the vertical downward movement of the inclined push plate 64 is converted into a horizontal thrust on the contact part 82 through the inclined surface contact, pushing a pair of contact parts 82 to slide along the reciprocating slide groove 84 (the horizontal groove in the inner wall of the rivet groove 63) towards the lock cylinder 200 cover 100. The contact part 82 is fixedly connected to the riveting slider 81. Therefore, the riveting slider 81 moves horizontally synchronously, and the riveting pin 83 (with an arc-shaped or wedge-shaped head that matches the riveting part of the cover 100) installed at its bottom via the quick-release assembly 85 moves closer to the riveting part of the cover 100 and applies pressure, causing the material of the cover 100 to undergo plastic deformation and engage with the lock cylinder 200. After riveting is completed, the power unit 7 drives the movable plate 61 to rise, the inclined push plate 64 disengages from the contact part 82, and the contact part 82, under the action of the return spring (pre-set in the reciprocating slide groove 84), drives the riveting slider 81 and the riveting pin 83 back to the initial position, waiting for the next riveting. This structure achieves horizontal riveting of the cover 100 through the conversion of "vertical movement - horizontal force", avoiding the deformation of the lock cylinder 200 that may be caused by vertical riveting.

[0054] Example 6:

[0055] In this embodiment, in addition to the structural features of the aforementioned embodiments, the contact portion 82 includes a sliding block 821, a groove 822, and a bearing 823. The sliding block 821 is slidably installed in the reciprocating groove 84, and the bearing 823 is rotatably installed in the groove 822 at one end of the sliding block 821 via a rotating shaft.

[0056] like Figures 5 to 8As shown, due to the above-described structure, based on Embodiment 5, the sliding block 821 of the contact portion 82 (which is clearance-fitted with the reciprocating groove 84) can slide horizontally along the reciprocating groove 84. A slot 822 is formed at one end near the inclined push plate 64, and a bearing 823 (such as a deep groove ball bearing 823) is installed in the slot 822 via a rotating shaft. The outer ring of the bearing 823 protrudes from the surface of the sliding block 821. When the inclined push plate 64 of the riveting plate 62 descends, the inclined surface of the inclined push plate 64 first contacts the outer ring of the bearing 823. As the inclined push plate 64 continues to move downwards, the bearing 823 rolls (rather than slides) under the pressure of the inclined push plate 64, transmitting the vertical thrust of the inclined push plate 64 to the sliding block 821 through rolling friction. Compared to sliding contact, the rolling bearing 823 reduces the coefficient of friction to 1 / 10-1 / 20 of the original, significantly reducing power loss and component wear, and making the horizontal movement of the sliding block 821 smoother (avoiding jamming or impact). Meanwhile, the rotation center of the bearing 823 is fixed in the slot 822, ensuring that the thrust is always transmitted to the sliding block 821 in the horizontal direction, ensuring the accuracy of the movement trajectory of the riveting slider 81 and the riveting pin 83, and ultimately making the riveting pressure evenly applied to the cover 100, thus improving the consistency of the riveting quality.

[0057] Example 7:

[0058] In this embodiment, in addition to the structural features of the aforementioned embodiments, the quick-release assembly 85 includes a mounting groove 851, a limiting groove 852, and a limiting plate 853. The mounting groove 851 extends through the riveting slider 81 from left to right, and its lower outer end communicates with the bottom surface of the riveting slider 81. The limiting groove 852 is opened on the bottom surface of the riveting slider 81 and communicates with the middle part of the mounting groove 851. The limiting plate 853 is installed in the mounting groove 851 by fasteners, and one end of it is provided with a latch 854. The riveting pin 83 is slidably inserted into the mounting groove 851, and its end is fixed with a locking block 855 for engaging with the latch 854.

[0059] like Figures 5 to 8As shown, due to the above-described structure, based on Embodiment 5 or 6, the quick-release assembly 85 is used to achieve quick replacement of the rivet pin 83 (to adapt to the riveting requirements of different specifications of the cover 100). The cross-sectional shape of the mounting groove 851 (formed inside the riveting slider 81) matches the rod portion of the rivet pin 83 (e.g., square or round), ensuring that the rivet pin 83 can slide horizontally along the groove after insertion without circumferential rotation; the lower part of the outer end of the groove is connected to the bottom surface of the riveting slider 81, facilitating the head of the rivet pin 83 to extend and act on the cover 100. The width of the limiting groove 852 (located below the middle of the mounting groove 851) is greater than that of the mounting groove 851, providing engagement space for the latch 854 of the limiting plate 853. When installing the rivet pin 83, first fix the limiting plate 853 (a strip of metal) in the preset position of the mounting groove 851 using fasteners (such as hex socket screws), so that the retaining slot 854 of the limiting plate 853 is aligned with the limiting groove 852; then insert the retaining block 855 (a radially protruding protrusion) of the rivet pin 83 into the opening at the outer end of the mounting groove 851, and push the rivet pin 83 until the retaining block 855 enters the limiting groove 852 and engages with the retaining slot 854 of the limiting plate 853 (the shape of the retaining slot 854 matches that of the retaining block 855, such as U-shaped or stepped). At this time, the retaining block 855 is constrained by the inner wall of the limiting plate 853 and the limiting groove 852, and cannot be dislodged axially or radially along the groove. During disassembly, simply loosen the fasteners and remove the limiting plate 853. The constraint of the retaining block 855 is released, and the rivet pin 83 can be pulled out of the mounting groove 851. This structure reduces the replacement time of the rivet pin 83 from 5-10 minutes in traditional bolt connections to less than 30 seconds. At the same time, the stability of the locking structure ensures that the rivet pin 83 does not loosen during riveting, thus balancing replacement efficiency and operational reliability.

[0060] The quick-release assembly 85 has a U-shaped bayonet 854 on the limiting plate 853. The locking block 855 of the rivet pin 83 is a stepped type that matches the bayonet 854. After the locking block 855 is engaged, it restricts the axial disengagement of the rivet pin 83.

[0061] Example 8:

[0062] In this embodiment, in addition to the structural features of the aforementioned embodiments, it also includes a central limiting block 9 and a pair of side limiting blocks 10. The central limiting block 9 is inserted on the lower plate 32, and its lower end passes through the reciprocating slide groove 84. A return spring is provided between the left and right sides of the limiting block and the two sliding blocks 821. The pair of side limiting blocks 10 are respectively inserted into the inner end of the part of each riveting groove 63 that connects to the top surface of the lower plate 32, for limiting the bearing 823.

[0063] like Figures 5 to 8As shown, due to the above structure, when the inclined push plate 64 descends to push the bearing 823 of the contact part 82, the side limiting block 10 (inserted in the inner end of the part of the riveting groove 63 that connects to the top surface of the lower plate 32) forms a hard constraint on the movement range of the bearing 823, preventing the bearing 823 from sliding excessively inward with the sliding block 821 (i.e., preventing the riveting pin 83 from exceeding the preset riveting stroke), ensuring that the riveting pressure of the riveting unit 8 on the cover 100 always acts at the preset point, and at the same time preventing the sliding block 821 from colliding and being damaged with other components.

[0064] After riveting is completed, the power unit 7 drives the movable plate 61 to rise, and the inclined push plate 64 disengages from the bearing 823. At this time, the return springs on both sides of the middle limit block 9 (inserted into the lower plate 32 and with its lower end extending into the reciprocating slide groove 84) release elastic potential energy, pushing the two slide blocks 821 to reset outward along the reciprocating slide groove 84. The middle limit block 9 restricts the reset endpoint of the slide blocks 821 through its own structure, ensuring that the two slide blocks 821 return to their initial positions symmetrically, providing a consistent starting state for the next riveting action and improving the repeatability accuracy of the equipment action.

[0065] The quick-release assembly 85 is located at the bottom of the riveting slider 81 and on the side of the contact portion 82 away from the inclined push plate 64.

[0066] Example 9:

[0067] In this embodiment, in addition to the structural features of the aforementioned embodiments, the installation unit 5 includes a fixing plate 51 and a positioning plate 52. The fixing plate 51 is fixed on the column of the external assembly machine, and the positioning plate 52 is fixed on the bottom end of the fixing plate 51. A pair of positioning screws 53 are installed on the fixing plate 51 through screw holes. Each of the support columns 33 is slidably engaged with the installation plate 31, and each support column 33 has a limiting plate 54 fixed at its top and middle.

[0068] like Figures 4 to 5 As shown, based on the above structural design, when the power unit 7 drives the movable plate 61 to rise, the return spring synchronously releases elastic potential energy to push the pair of contact parts 82 apart. During this process, the return spring simultaneously generates a pushing force on each inclined push plate 64. Under the combined action of this pushing force and gravity, the movable plate 61 first moves upward relative to the lower plate 32. As the power unit 7 continues to operate, the movable plate 61 contacts the bottom surface of the limiting plate 54 in the middle of the support column 33 during the rising process, and lifts the limiting plate 54 to drive each support column 33 and the lower plate 32 to rise synchronously until the top surface of the movable plate 61 completely abuts the bottom surface of the limiting plate 54 in the middle of the support column 33. At this time, the limiting plate 54 at the top of each support column 33 separates from the mounting plate 31.

[0069] When the power unit 7 drives the movable plate 61 to descend, each return spring provides support force to the contact part 82 and each inclined push plate 64. Under the support force and the drive of the movable plate 61, the lower plate 32 and each support column 33 descend together with the movable plate 61, ensuring that the top surface of the movable plate 61 always keeps in contact with the bottom surface of the corresponding limiting plate 54. When the limiting plate 54 at the top of each support column 33 contacts the top surface of the mounting plate 31, the lower plate 32 simultaneously contacts the top of each positioning screw 53. Afterward, the movable plate 61 continues to descend under the drive of the power unit 7, and each inclined push plate 64 moves down synchronously with the movable plate 61, pushing a pair of contact parts 82 to gradually close, completing the riveting of the cover 100 and the lock cylinder.

[0070] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0071] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A cover plate riveting device for a lock cylinder assembly machine, characterized in that, It includes an assembly mold, a riveting top assembly, and a horizontal riveting cover assembly. The assembly mold is used to position and place the lock cylinder. After the cover to be riveted is placed on the top of the lock cylinder, the riveting top assembly lifts the lock cylinder upward and enters the working position of the horizontal riveting cover assembly. The horizontal riveting cover assembly applies riveting pressure to the cover in the horizontal direction to fix the two together.

2. The cover plate riveting device for a lock cylinder assembly machine according to claim 1, characterized in that, The horizontal riveted cover assembly includes an installation unit, an installation plate, a lower plate, a transmission unit, a power unit, and a riveting unit. The installation unit is used to fix the installation plate on an external lock cylinder assembly machine. The lower plate is installed at the bottom of the installation plate by multiple support pillars. The riveting unit is located on the lower plate. The power unit is located on the installation plate. The transmission unit drives the riveting unit to apply riveting pressure to the cover.

3. A cover plate riveting device for a lock cylinder assembly machine according to claim 2, characterized in that, The power unit includes a drive cylinder, a connecting screw, a cylinder connector, and a cylinder connecting plate. The drive cylinder is fixed on the mounting plate, and its piston rod extends downward to be fixed to the connecting screw. The lower end of the connecting screw is threadedly connected to the cylinder connector. The cylinder connecting plate is fixed on the top of the transmission unit and is inserted into the cylinder connector through a connector groove.

4. A cover plate riveting device for a lock cylinder assembly machine according to claim 3, characterized in that, The upper width of both the live joint groove and the cylinder live joint is smaller than the lower width.

5. A cover plate riveting device for a lock cylinder assembly machine according to claim 2, characterized in that, The transmission unit includes a movable plate, a riveting plate, and a riveting groove. The movable plate is connected to the power unit and slides with each support column. The riveting groove is located at the bottom of the lower plate, with both ends extending upward to connect to the top surface of the lower plate. The riveting unit is installed in the riveting groove. The riveting plate is fixed to the bottom of the movable plate, with inclined push plates fixed at both ends. The inclined push plates extend into both ends of the riveting groove to trigger the riveting unit when the riveting plate descends.

6. A cover plate riveting device for a lock cylinder assembly machine according to claim 5, characterized in that, The riveting unit includes a pair of riveting sliders, a pair of contact parts, and a pair of riveting pins. The pair of riveting sliders are respectively fixed to the corresponding contact parts. The pair of contact parts are slidably installed in the riveting groove through a reciprocating slide groove. The pair of riveting pins are installed at the bottom of each riveting slider through a quick-release assembly.

7. A cover plate riveting device for a lock cylinder assembly machine according to claim 6, characterized in that, The contact part includes a sliding block, a groove, and a bearing. The sliding block is slidably installed in a reciprocating groove, and the bearing is rotatably installed in the groove at one end of the sliding block via a rotating shaft.

8. A cover plate riveting device for a lock cylinder assembly machine according to claim 6, characterized in that, The quick-release assembly includes an installation slide, a limiting groove, and a limiting plate. The installation slide passes through the riveting slider from both sides, and its lower outer end communicates with the bottom surface of the riveting slider. The limiting groove is opened on the bottom surface of the riveting slider and communicates with the middle of the installation slide. The limiting plate is installed in the installation slide by fasteners, and one end of the plate has a locking slot. The riveting pin is slidably inserted into the installation slide, and its end is fixed with a locking block for engaging with the locking slot.

9. A cover plate riveting device for a lock cylinder assembly machine according to claim 1, characterized in that, The assembly mold has mounting holes adapted to the lock cylinder.

10. A cover plate riveting device for a lock cylinder assembly machine according to claim 1, characterized in that, The riveting top assembly includes a mounting bracket and a top cylinder. The top cylinder is mounted on an external lock cylinder assembly machine via the mounting bracket and is located below the horizontal riveting cover assembly.

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