A hydraulic riveting machine capable of quick positioning
The adjustable positioning mechanism solves the problem of fixed positioning pin size in hydraulic riveting machines, enabling rapid positioning and disassembly, improving positioning accuracy and practicality, and protecting the positioning pin.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI ZHENPU TRACK MANUFACTURING CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-05-29
AI Technical Summary
The fixed size of the positioning pins in existing hydraulic riveting machines makes it difficult to adapt to the positioning hole requirements of different types and specifications of workpieces, resulting in inaccurate positioning and inconvenient disassembly.
An adjustable positioning mechanism is adopted, including a positioning pin, an arc plate, a motor, a lead screw, a cylinder, and a storage mechanism. The position of the positioning pin is adjusted by the motor driving the lead screw, and the arc plate is opened or closed by the cylinder. The cover plate protects the positioning pin, enabling quick positioning and disassembly.
It enables rapid adjustment of positioning based on the size of the workpiece positioning hole, improving positioning accuracy and practicality, facilitating workpiece disassembly, and protecting the positioning pin from collision and contamination.
Smart Images

Figure CN224294607U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of riveting machine technology, specifically a hydraulic riveting machine that can be quickly positioned. Background Technology
[0002] Hydraulic riveting machines are automated or semi-automatic devices that use hydraulic power to upset rivets, thereby fastening two or more workpieces together. They are widely used in aerospace, automobile manufacturing, rail transportation, engineering machinery and other fields that require high connection strength and precision.
[0003] When positioning workpieces, the use of locating pins is a common mechanical positioning method in hydraulic riveting machines. However, the locating pins of existing hydraulic riveting machines are mostly of fixed size. In actual production, different types and specifications of workpieces often require locating holes of different sizes to meet assembly requirements. Therefore, a hydraulic riveting machine with rapid positioning is proposed to solve the above-mentioned problems. Utility Model Content
[0004] The purpose of this invention is to provide a hydraulic riveting machine that can be quickly positioned, thereby solving the problems mentioned in the background art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a hydraulic riveting machine with rapid positioning, including a base, a sliding groove on the base, a positioning mechanism on the base, and a storage mechanism on the positioning mechanism. The positioning mechanism includes a positioning pin and an arc plate. The positioning pin is disposed inside the sliding groove, and the arc plate is hinged to the positioning pin through a hinge rod.
[0006] Preferably, the positioning mechanism further includes a motor, a lead screw, a movable plate, and a lifting assembly. The motor is installed inside the base. One end of the lead screw is fixedly connected to the output end of the motor, and the other end of the lead screw is rotatably connected to the inner wall of the base. The movable plate is threaded onto the lead screw and slidably connected to the inner wall of the base. The lifting assembly is mounted on the movable plate.
[0007] Preferably, the lifting assembly includes a ring, a cylinder, and a connecting frame. The ring is sleeved on a positioning pin and is hinged to an arc-shaped plate via a hinge rod. The cylinder is mounted on the side of the moving plate, and the connecting frame is mounted on the top of the cylinder and connected to the ring.
[0008] Preferably, the storage mechanism includes a groove, a slider, a spring, and a stop rod. The groove is formed on the outer wall of the positioning pin, the slider is fixed on the inner wall of the ring and slidably connected to the inner wall of the groove, the two ends of the spring are respectively connected to the slider and the groove, and the stop rod is fixed on the outer wall of the positioning pin.
[0009] Preferably, the base is provided with a cover groove, and the cover groove is located above the slide groove. The base is provided with a cover plate, and the size of the cover plate is the same as the size of the cover groove.
[0010] Preferably, a frame is provided on the top of the base, and a riveting actuator is installed on the frame.
[0011] The present invention adopts the above technical solution, which can bring the following beneficial effects:
[0012] 1. This hydraulic riveting machine with rapid positioning uses a cylinder to drive an arc plate to unfold and retract, which can be adjusted according to the positioning hole size of different workpieces without the need to replace the positioning pins, thus improving the practicality of the device. When removing the workpiece, the arc plate retracts inward, and the workpiece can be quickly removed from the positioning pin, making disassembly more convenient. At the same time, through the setting of the motor, lead screw and moving plate, the position of the positioning pin can be adjusted to adapt to the positioning hole position of different workpieces, further improving the practicality and accuracy of positioning.
[0013] 2. This hydraulic riveting machine with rapid positioning, by setting grooves, sliders, springs and stop rods, enables the cylinder to not only drive the arc plate to unfold, but also to retract the positioning pin into the base slide groove. With the cover plate covering the slide groove, the positioning pin is protected and prevented from being deformed by accidental collision or contaminated by debris when not in use. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall design of this utility model;
[0015] Figure 2 This is an overall sectional view of the present invention;
[0016] Figure 3 This is a schematic diagram of the structure of this utility model;
[0017] Figure 4 This is a schematic diagram of the positioning pin of this utility model.
[0018] In the diagram: 1. Base; 2. Frame; 3. Riveting actuator; 4. Positioning mechanism; 41. Positioning pin; 42. Arc plate; 43. Ring; 44. Motor; 45. Lead screw; 46. Moving plate; 47. Cylinder; 48. Connecting frame; 5. Storage mechanism; 51. Groove; 52. Slider; 53. Spring; 54. Abutment; 55. Cover plate. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" means two or more, unless otherwise explicitly specified.
[0023] Please see Figure 1-4 One embodiment of this utility model is: a hydraulic riveting machine that can be quickly positioned, including a base 1, a sliding groove on the base 1, a frame 2 on the top of the base 1, a lifting slide rail on the frame 2, a riveting execution mechanism 3 installed on the lifting slide rail, a positioning mechanism 4 on the base 1, and a storage mechanism 5 on the positioning mechanism 4.
[0024] The positioning mechanism 4 includes a positioning pin 41 and an arc plate 42. The positioning pin 41 is located inside the slide groove, and the arc plate 42 is hinged to the positioning pin 41 through a hinge rod. The positioning mechanism 4 also includes a motor 44, a lead screw 45, a moving plate 46, and a lifting assembly. The motor 44 is installed inside the base 1. One end of the lead screw 45 is fixedly connected to the output end of the motor 44, and the other end of the lead screw 45 is rotatably connected to the inner wall of the base 1. The moving plate 46 is threaded onto the lead screw 45 and slidably connected to the inner wall of the base 1. The lifting assembly is located on the moving plate 46.
[0025] The lifting assembly includes a ring 43, a cylinder 47, and a connecting frame 48. The ring 43 is sleeved on the positioning pin 41 and is hinged to the arc plate 42 via a hinge rod. The diameter of the ring 43 is smaller than the width of the slide groove, allowing the ring 43 to move up and down in the slide groove. The cylinder 47 is installed on the side of the moving plate 46, and the connecting frame 48 is installed on the top of the cylinder 47 and connected to the ring 43.
[0026] Working principle: The starting motor 44 drives the lead screw 45 to rotate, which in turn moves the moving plate 46. The movement of the moving plate 46 moves the positioning pin 41. The position of the positioning pin 41 is adjusted according to the preset positioning hole of the workpiece. After the position of the positioning pin 41 is adjusted, the workpiece is placed on the base 1, so that the positioning pin 41 is inserted into the positioning hole on the workpiece. The starting cylinder 47 drives the connecting frame 48 to rise, which in turn drives the ring 43 to rise. The rise of the ring 43 drives the arc plate 42 to unfold outward through the hinge rod, so that the arc plate 42 abuts against the inner wall of the positioning hole, thereby fixing the workpiece. The riveting actuator 3 rivets the workpiece. After the riveting is completed, the cylinder 47 drives the connecting frame 48 to fall, which in turn drives the ring 43 to fall, and the arc plate 42 is retracted inward, so that the workpiece can be quickly removed.
[0027] Please see Figure 1-4 Based on the above embodiments, in another embodiment of the present invention, the storage mechanism 5 includes a groove 51, a slider 52, a spring 53, and a stop rod 54. The groove 51 is formed on the outer wall of the positioning pin 41. The slider 52 is fixed on the inner wall of the ring 43 and slidably connected to the inner wall of the groove 51. The two ends of the spring 53 are respectively connected to the slider 52 and the groove 51. The stop rod 54 is fixed on the outer wall of the positioning pin 41. A cover groove is provided on the base 1, and the cover groove is above the slide groove. A cover plate 55 is provided on the base 1, and the size of the cover plate 55 is the same as the size of the cover groove.
[0028] Working principle: When not in use, the cylinder 47 retracts the arc plate 42 and drives the connecting frame 48 to descend, retracting the positioning pin 41 into the base 1. Then, the cover plate 55 is placed in the cover groove to cover the slide groove, thereby protecting the positioning pin 41 and preventing it from being damaged by collision. When in use again, the cover plate 55 is opened, and the cylinder 47 drives the connecting frame 48 to rise, thereby driving the positioning pin 41 to rise, so that the abutment 54 abuts against the top of the inner wall of the base 1. At this time, the connecting frame 48 continues to rise, which will stretch the spring 53 to make the ring 43 rise. The positioning pin 41 cannot rise further under the action of the abutment 54, thus unfolding and fixing the arc plate 42.
[0029] This utility model provides a hydraulic riveting machine capable of rapid positioning. There are many methods and approaches to implement this technical solution; the above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.
Claims
1. A hydraulic riveting machine capable of rapid positioning, comprising a base (1), wherein a groove is provided on the base (1), characterized in that: The base (1) is provided with a positioning mechanism (4), and the positioning mechanism (4) is provided with a storage mechanism (5). The positioning mechanism (4) includes a positioning pin (41) and an arc plate (42). The positioning pin (41) is located inside the slide groove, and the arc plate (42) is hinged to the positioning pin (41) through a hinge rod.
2. The hydraulic riveting machine with rapid positioning according to claim 1, characterized in that: The positioning mechanism (4) also includes a motor (44), a lead screw (45), a moving plate (46), and a lifting assembly. The motor (44) is installed inside the base (1). One end of the lead screw (45) is fixedly connected to the output end of the motor (44), and the other end of the lead screw (45) is rotatably connected to the inner wall of the base (1). The moving plate (46) is threaded onto the lead screw (45) and slidably connected to the inner wall of the base (1). The lifting assembly is mounted on the moving plate (46).
3. The hydraulic riveting machine with rapid positioning according to claim 2, characterized in that: The lifting assembly includes a ring (43), a cylinder (47), and a connecting frame (48). The ring (43) is sleeved on the positioning pin (41) and is hinged to the arc plate (42) by a hinge rod. The cylinder (47) is installed on the side of the moving plate (46). The connecting frame (48) is installed on the top of the cylinder (47) and connected to the ring (43).
4. The hydraulic riveting machine with rapid positioning according to claim 3, characterized in that: The storage mechanism (5) includes a groove (51), a slider (52), a spring (53), and a stop rod (54). The groove (51) is formed on the outer wall of the positioning pin (41). The slider (52) is fixed on the inner wall of the ring (43) and slidably connected to the inner wall of the groove (51). The two ends of the spring (53) are respectively connected to the slider (52) and the groove (51). The stop rod (54) is fixed on the outer wall of the positioning pin (41).
5. A hydraulic riveting machine capable of rapid positioning according to claim 4, characterized in that: The base (1) is provided with a cover groove, and the cover groove is above the slide groove. The base (1) is provided with a cover plate (55), and the size of the cover plate (55) is the same as the size of the cover groove.
6. A hydraulic riveting machine capable of rapid positioning according to claim 5, characterized in that: The base (1) has a frame (2) on top, and a riveting actuator (3) is installed on the frame (2).