Height-adjustable riveting equipment

Abstract

The utility model discloses height-adjustable riveting equipment, and relates to the technical field of riveting. The equipment comprises a tool mechanism and a rivet pressing mechanism. The tool mechanism comprises a carrying plate, an annular limiting structure used for fixing a to-be-riveted workpiece and a supporting structure used for supporting the to-be-riveted workpiece, the supporting structure comprises a fixing base and a sliding block, and the bottom face of the sliding block is in wedge-shaped sliding connection with the top face of the fixing base. By arranging the supporting structure used for supporting the to-be-riveted workpiece in the tool mechanism, the height for supporting the to-be-riveted workpiece can be adjusted, rivets with different length requirements can be riveted on the to-be-riveted workpiece, the riveting requirements of positions with different thicknesses on the same to-be-riveted workpiece are met, riveting of multiple rivets with different lengths can be completed at a time, and the riveting efficiency is improved. And two different rivet pressing mechanisms are not needed for rivet pressing, so that the equipment cost is reduced, and the rivet pressing efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of riveting technology, and in particular to a height-adjustable riveting device. Background Art

[0002] The existing riveting machine includes a tooling mechanism and a pressure riveting mechanism. The tooling mechanism fixes the workpiece to be riveted. The tooling mechanism and the pressure riveting mechanism are set correspondingly. The stroke of the pressure riveting mechanism is fixed. The workpiece to be riveted and the punch head of the pressure riveting mechanism are set correspondingly to achieve the consistency of the height of the pressure riveted rivets, thereby avoiding the low product quality caused by inconsistent height of the pressure riveted rivets. However, when there are two rivets with different pressure riveting heights on the workpiece, two different pressure riveting mechanisms are required to perform two-step production processes, which reduces production efficiency, and the equipment cost is high and the pressure riveting efficiency is low. Utility Model Content

[0003] An embodiment of the present application provides a height-adjustable riveting device, which can solve the technical problem that the current riveting machine uses two different riveting mechanisms for riveting when there are two rivets with different riveting heights on the workpiece, resulting in high equipment cost and low riveting efficiency.

[0004] The embodiment of the present application provides a height-adjustable riveting device, including a tooling mechanism and a pressure riveting mechanism; the tooling mechanism includes a carrier plate, an annular limiting structure for fixing the workpiece to be riveted, a sliding driver, and a supporting structure for supporting the workpiece to be riveted, the carrier plate is provided with a hollow hole, the annular limiting structure is provided on the carrier plate and arranged around the hollow hole, and the supporting structure is arranged corresponding to the hollow hole; the supporting structure includes a fixed seat and a sliding block, the sliding block is limited in the hollow hole, the fixed seat is arranged corresponding to the punching head of the pressure riveting mechanism, and the bottom surface of the sliding block is wedge-shaped and slidably connected to the top surface of the fixed seat; the sliding driver is connected to the carrier plate to drive the carrier plate relative to the The fixed seat slides, and the carrier plate limits the sliding block to slide relative to the fixed seat to adjust the total thickness of the sliding block and the fixed seat; when the carrier plate is in the first position, the total thickness of the sliding block and the fixed seat is the first thickness, and the first rivet on the workpiece to be riveted set on the carrier plate is supported on the sliding block, and the punching head of the riveting mechanism punches and rivets the first rivet to the workpiece to be riveted; when the carrier plate is translated from the first position to the second position, the total thickness of the sliding block and the fixed seat is the second thickness, and the second rivet on the workpiece to be riveted set on the carrier plate is supported on the sliding block, and the punching head of the riveting mechanism punches and rivets the second rivet to the workpiece to be riveted.

[0005] Furthermore, the tooling mechanism also includes a fixed base plate, the fixed base plate is provided with a limiting groove, and the fixed seat is clamped in the limiting groove.

[0006] Furthermore, the fixing seat is provided with a limiting edge and a protrusion, the limiting edge is arranged around the protrusion, and the top surface of the protrusion is a wedge-shaped transition surface; the fixed base plate is provided with a limiting protrusion, and the limiting protrusion is formed around the limiting groove, the shape and area of ​​the limiting groove are adapted to the shape and area of ​​the protrusion, the protrusion passes through the limiting groove, and the limiting protrusion presses the limiting edge.

[0007] Furthermore, the tooling mechanism further includes a slide rail, which is fixed relative to the fixed base plate, and the carrier plate is slidably arranged on the slide rail, and the sliding driver is connected to the carrier plate to drive the carrier plate to slide along the slide rail.

[0008] Furthermore, when the sliding block and the fixed seat slide relative to each other in the first direction, the total thickness of the sliding block and the fixed seat can be adjusted; the first thickness is different from the second thickness, and the length of the first rivet is different from the length of the second rivet; the sliding rail is arranged along the first direction.

[0009] Furthermore, the tooling mechanism also includes an intermediate support plate, the intermediate support plate is fixed on the fixed base plate, the slide rail is arranged on the intermediate support plate, the intermediate plate is provided with a hollow hole, the sliding block is arranged in the hollow hole, and during the relative sliding process between the sliding block and the fixed seat, the sliding block and the hollow hole do not contact each other.

[0010] Furthermore, the annular limiting structure includes a supporting block and / or a limiting column, the supporting block supports the bottom surface of the workpiece to be riveted, and the limiting column clamps the edge of the workpiece to be riveted.

[0011] Furthermore, the bottom surface of the sliding block and the top surface of the fixing seat have the same area. During the relative sliding process between the sliding block and the fixing seat, the bottom surface of the sliding block always abuts against the top surface of the fixing seat, and the top surface of the sliding block remains horizontal.

[0012] Furthermore, the height-adjustable riveting equipment also includes a turntable mechanism, at least one tooling mechanism is arranged on the turntable mechanism, at least one pressure riveting mechanism is arranged on one side of the turntable mechanism, the tooling mechanism on the turntable mechanism can be arranged corresponding to the pressure riveting mechanism, and the punching head of the pressure riveting mechanism is arranged directly above the tooling mechanism.

[0013] Furthermore, the height-adjustable riveting equipment also includes an outer frame and a bushing pre-installation mechanism; the bushing pre-installation mechanism is arranged on one side of the turntable mechanism, and the bushing pre-installation mechanism can punch and pre-install the first rivet or the second rivet on the workpiece to be riveted, and the turntable mechanism, the press riveting mechanism and the bushing pre-installation mechanism are all fixed on the outer frame.

[0014] The height-adjustable riveting equipment provided in the embodiment of the present application can adjust the height of the workpiece to be riveted by setting a support structure for supporting the workpiece to be riveted in the tooling mechanism, thereby realizing riveting rivets of different lengths on the workpiece to be riveted. It is suitable for riveting requirements of different thickness positions on the same workpiece to be riveted, and can complete the riveting of multiple rivets of different lengths at one time, without the need to use two different riveting mechanisms for riveting, thereby reducing equipment costs and improving riveting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings will make the technical solutions and other beneficial effects of the present application apparent.

[0016] Figure 1 A schematic structural diagram of the height-adjustable riveting equipment provided in an embodiment of the present application.

[0017] Figure 2 This is a schematic structural diagram of the riveting mechanism provided in an embodiment of the present application.

[0018] Figure 3 A schematic structural diagram of the tooling mechanism provided in an embodiment of the present application.

[0019] Figure 4 A cross-sectional view of the tooling mechanism provided in an embodiment of the present application.

[0020] Figure 5 This is a schematic top view of the tooling mechanism provided in an embodiment of the present application.

[0021] Figure 6 A schematic structural diagram of the turntable mechanism provided in an embodiment of the present application.

[0022] The symbols in the figure are as follows:

[0023] Tooling mechanism 1, loading plate 11, hollow hole 111, annular limiting structure 12, supporting structure 13, fixed seat 131, limiting edge portion 1311, protrusion 1312, sliding block 132, first position sensor 133, second position sensor 134, fixed base plate 14, limiting groove 141, limiting protrusion 142, sliding driver 15, slide rail 16, intermediate support plate 17, hollow hole 171, riveting mechanism 2, turntable mechanism 3, outer frame 4, bushing pre-installation mechanism 5. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0025] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections, electrical connections, or mutual communication; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0027] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0028] An embodiment of the present application provides a height-adjustable riveting device, which can rivet rivets of different lengths at different thickness positions on the same workpiece to be riveted, and complete the riveting of rivets of different length requirements on the workpiece to be riveted at one time, thereby improving the riveting efficiency.

[0029] For details, please refer to Figures 1 to 4 , the height-adjustable riveting device includes a tooling mechanism 1 and a pressure riveting mechanism 2; the tooling mechanism 1 includes a carrier plate 11, an annular limiting structure 12 for fixing the workpiece to be riveted, a sliding driver 15 and a support structure 13 for supporting the workpiece to be riveted, the carrier plate 11 is provided with a hollow hole 111, the annular limiting structure 12 is provided on the carrier plate 11 and is arranged around the hollow hole 111, and the support structure 13 is arranged corresponding to the hollow hole 111; the support structure 13 includes a fixed seat 131 and a sliding block 132, the sliding block 132 is limited in the hollow hole 111, the fixed seat 131 is arranged corresponding to the punching head of the pressure riveting mechanism 2, and the bottom surface of the sliding block 132 is wedge-shaped and slidably connected to the top surface of the fixed seat 131; the sliding driver 15 is connected to the carrier plate 11 to drive the carrier plate 11 relative The fixed seat 131 slides, and the carrier plate 11 limits the sliding block 132 to slide relative to the fixed seat 131 to adjust the total thickness of the sliding block 132 and the fixed seat 131; when the carrier plate 11 is in the first position, the total thickness of the sliding block 132 and the fixed seat 131 is the first thickness, and the first rivet on the workpiece to be riveted set on the carrier plate 11 is supported on the sliding block 132, and the punching head of the riveting mechanism 2 punches and rivets the first rivet to the workpiece to be riveted; when the carrier plate 11 is translated from the first position to the second position, the total thickness of the sliding block 132 and the fixed seat 131 is the second thickness, and the second rivet on the workpiece to be riveted set on the carrier plate 11 is supported on the sliding block 132, and the punching head of the riveting mechanism 2 punches and rivets the second rivet to the workpiece to be riveted.

[0030] After the punch head of the riveting mechanism 2 punches the first rivet when the carrier plate 11 is in the first position, the carrier plate 11 is immediately adjusted to the second position so that the punch head of the riveting mechanism 2 punches the second rivet. It is understandable that a third rivet can be set on the workpiece to be riveted in this application. When the carrier plate 11 is in the third position, the total thickness of the sliding block 132 and the fixing seat 131 is the third thickness. The third rivet on the workpiece to be riveted set on the carrier plate 11 is supported on the sliding block 132, and the punch head of the riveting mechanism 2 punches and rivets the third rivet on the workpiece to be riveted. In summary, it can be seen that adjustable riveting requirements of different riveting heights can be achieved through one device, without the need to use two different riveting mechanisms 2 for riveting, thereby reducing equipment costs and improving riveting efficiency.

[0031] Preferably, when the carrier plate 11 is set in the first position, the carrier plate 11 is located on the left side of the fixing seat 131, and when the carrier plate 11 is in the second position, the carrier plate 11 is located on the right side of the fixing seat 131. In this way, a first position sensor 133 and a second position sensor 134 can be respectively set on the left and right sides of the fixing seat 131. When the first position sensor 133 detects the carrier plate 11, it is determined that the first rivet is punched and riveted. When the second position sensor 134 detects the carrier plate 11, it is determined that the second rivet is punched and riveted. In this way, after the first position sensor 133 and the second position sensor 134 both detect the carrier plate 11 once, it can be known that the riveting progress is completed, thereby controlling the process to enter the next cycle.

[0032] See also Figure 3 、 Figure 4 、 Figure 5 The tooling mechanism 1 further includes a fixed base plate 14 , which is provided with a limiting groove 141 , and the fixing seat 131 is clamped in the limiting groove 141 . The fixed base plate 14 is used to fix the fixing seat 131 .

[0033] See also Figure 4The fixing seat 131 is provided with a limiting edge 1311 and a raised portion 1312. The limiting edge 1311 is arranged around the raised portion 1312, and the top surface of the raised portion 1312 is a wedge-shaped transition surface. The fixing base plate 14 is provided with a limiting protrusion 142. The limiting protrusion 142 surrounds the limiting groove 141 to form the limiting groove 141. The shape and area of ​​the limiting groove 141 match the shape and area of ​​the raised portion 1312. The raised portion 1312 passes through the limiting groove 141, and the limiting protrusion 142 presses the limiting edge 1311. The top surface of the raised portion 1312 is a wedge-shaped transition surface, that is, a slope structure. The bottom surface of the fixing seat 131 is a slope structure that matches the top surface of the raised portion 1312, so that the top surface of the raised portion 1312 and the bottom surface of the fixing seat 131 can slide and abut against each other.

[0034] See also Figure 3 、 Figure 4 、 Figure 5 The tooling mechanism 1 further includes a slide rail 16, which is fixed relative to the fixed base plate 14. The carrier plate 11 is slidably disposed on the slide rail 16. The sliding driver 15 is connected to the carrier plate 11 to drive the carrier plate 11 to slide along the slide rail 16, so that the carrier plate 11 is limited to slide the sliding block 132 relative to the fixed seat 131 to adjust the total thickness of the sliding block 132 and the fixed seat 131. The total thickness of the sliding block 132 and the fixed seat 131 is the height of the workpiece to be riveted. After the total thickness of the sliding block 132 and the fixed seat 131 changes, the top surface of the sliding block 132 is always maintained to support the riveting rivets of the workpiece to be riveted. The riveting rivets are the first rivet, the second rivet, and the third rivet described above.

[0035] Furthermore, when the sliding block 132 and the fixing base 131 slide relative to each other in a first direction, the combined thickness of the sliding block 132 and the fixing base 131 can be adjusted; the first thickness is different from the second thickness, and the length of the first rivet is different from the length of the second rivet; the slide rail 16 is arranged along the first direction. It is understood that when a third rivet is provided, the third thickness is different from the first thickness and the second thickness, and the length of the third rivet is different from the length of the first rivet and the length of the second rivet.

[0036] See also Figure 3 、 Figure 4The fixture mechanism 1 further includes an intermediate support plate 17, which is fixed to the fixed base plate 14. The slide rail 16 is disposed on the intermediate support plate 17. The intermediate plate is provided with a hollow hole 171, within which the sliding block 132 is disposed. During the relative sliding movement between the sliding block 132 and the fixed base 131, the sliding block 132 and the hollow hole 171 do not contact each other. The intermediate support plate 17 maintains the top surface of the loading plate 11 and the top surface of the sliding block 132 substantially aligned, preventing serious misalignment that would result in the annular limiting structure 12 being oversized.

[0037] Furthermore, the annular limiting structure 12 includes a support block and / or a limiting post. The support block supports the bottom surface of the workpiece to be riveted, and the limiting post engages the edge of the workpiece to be riveted. The function of the annular limiting structure 12 is to fix the workpiece to be riveted on the carrier plate 11, so that the workpiece to be riveted moves together with the carrier plate 11, and the workpiece to be riveted can float slightly up and down to maintain mutual contact with the sliding block 132.

[0038] Furthermore, the bottom surface of the sliding block 132 has the same area as the top surface of the fixed seat 131. During the relative sliding process of the sliding block 132 and the fixed seat 131, the bottom surface of the sliding block 132 is always in contact with the top surface of the fixed seat 131, and the top surface of the sliding block 132 remains horizontal.

[0039] See also Figure 1 、 Figure 6 The height-adjustable riveting equipment also includes a turntable mechanism 3, at least one tooling mechanism 1 is arranged on the turntable mechanism 3, at least one pressure riveting mechanism 2 is arranged on one side of the turntable mechanism 3, the tooling mechanism 1 on the turntable mechanism 3 can be arranged corresponding to the pressure riveting mechanism 2, and the punching head of the pressure riveting mechanism 2 is arranged directly above the tooling mechanism 1.

[0040] Among them, the other side of the turntable mechanism 3 is used to take and place the workpiece to be riveted on the tooling mechanism 1. Preferably, the turntable mechanism 3 is divided into a first semicircular area and a second semicircular area, and two tooling mechanisms 1 are respectively provided in the first semicircular area and the second semicircular area. Two riveting mechanisms 2 are provided on one side of the turntable mechanism 3, so that the workpieces to be riveted on two tooling mechanisms 1 can be punched synchronously at one time. The turntable mechanism 3 can punch four workpieces to be riveted after one rotation, saving costs and manpower and improving processing efficiency.

[0041] During use, the workpiece to be riveted can be placed on the tooling mechanism 1 in the first semicircular area, and the turntable mechanism 3 rotates half a circle so that the tooling mechanism 1 on the turntable mechanism 3 in the first semicircular area can be set correspondingly to the riveting mechanism 2. After the punch head of the riveting mechanism 2 completes punching the first rivet when the carrier plate 11 is in the first position, the carrier plate 11 is immediately adjusted to the second position to enable the punch head of the riveting mechanism 2 to punch the second rivet. Subsequently, the turntable mechanism 3 rotates half a circle so that the tooling mechanism 1 on the turntable mechanism 3 in the second semicircular area can be set correspondingly to the riveting mechanism 2. The tooling mechanism 1 in the first semicircular area is reset outward, making it easy to remove the riveted workpiece from the first semicircular area after riveting and place a new workpiece.

[0042] See also Figure 1 The height-adjustable riveting equipment further includes an outer frame 4 and a bushing pre-installation mechanism 5; the bushing pre-installation mechanism 5 is arranged on one side of the turntable mechanism 3, and the bushing pre-installation mechanism 5 can pre-install the first rivet or the second rivet on the workpiece to be riveted by punching, and the turntable mechanism 3, the pressure riveting mechanism 2 and the bushing pre-installation mechanism 5 are all fixed on the outer frame 4. Among them, the bushing pre-installation mechanism 5 can realize the pre-installation of the first rivet and the second rivet on the workpiece to be riveted by punching, which facilitates the placement of the workpiece to be riveted with the first rivet and the second rivet pre-installed on the tooling mechanism 1 together to avoid the scattering of rivet parts. In addition, the outer frame 4 also has a protective function, preventing workers from entering the press riveting area, thereby improving the safety factor.

[0043] The height-adjustable riveting equipment provided in the embodiment of the present application can adjust the height of the workpiece to be riveted by setting a support structure 13 for supporting the workpiece to be riveted in the tooling mechanism 1, thereby realizing riveting rivets of different lengths on the workpiece to be riveted. It is suitable for riveting requirements of different thickness positions on the same workpiece to be riveted, and can complete the riveting of multiple rivets of different lengths at one time, without the need to use two different riveting mechanisms 2 for riveting, thereby reducing equipment costs and improving riveting efficiency.

[0044] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0045] The above is a detailed introduction to a height-adjustable riveting device provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A height-adjustable riveting device, characterized in that: It comprises a tooling mechanism and a riveting mechanism; the tooling mechanism comprises a carrier plate, an annular limiting structure for fixing the workpiece to be riveted, a sliding driver, and a supporting structure for supporting the workpiece to be riveted, the carrier plate is provided with a hollow hole, the annular limiting structure is provided on the carrier plate and arranged around the hollow hole, and the supporting structure is arranged corresponding to the hollow hole; the supporting structure comprises a fixed seat and a sliding block, the sliding block is limited in the hollow hole, the fixed seat is arranged corresponding to the punching head of the riveting mechanism, and the bottom surface of the sliding block is wedge-shaped and slidably connected to the top surface of the fixed seat; The sliding driver is connected to the carrier plate to drive the carrier plate to slide relative to the fixing seat, and the carrier plate limits the sliding block from sliding relative to the fixing seat to adjust the total thickness of the sliding block and the fixing seat; When the carrier plate is in the first position, the total thickness of the sliding block and the fixed seat is the first thickness, the first rivet on the workpiece to be riveted set on the carrier plate is supported on the sliding block, and the punch head of the riveting mechanism punches and rivets the first rivet to the workpiece to be riveted; when the carrier plate is translated from the first position to the second position, the total thickness of the sliding block and the fixed seat is the second thickness, the second rivet on the workpiece to be riveted set on the carrier plate is supported on the sliding block, and the punch head of the riveting mechanism punches and rivets the second rivet to the workpiece to be riveted.

2. The height-adjustable riveting device according to claim 1, characterized in that: The tooling mechanism further comprises a fixed base plate, the fixed base plate is provided with a limiting groove, and the fixed seat is clamped in the limiting groove.

3. The height-adjustable riveting device according to claim 2, characterized in that: The fixing seat is provided with a limiting edge and a raised portion, the limiting edge is arranged around the raised portion, and the top surface of the raised portion is a wedge-shaped transition surface; the fixed base plate is provided with a limiting protrusion, and the limiting protrusion is formed around the limiting groove, the shape and area of ​​the limiting groove are adapted to the shape and area of ​​the raised portion, the raised portion passes through the limiting groove, and the limiting protrusion presses the limiting edge.

4. The height-adjustable riveting device according to claim 2, characterized in that: The tooling mechanism further includes a slide rail, which is fixed relative to the fixed base plate. The carrier plate is slidably arranged on the slide rail, and the sliding driver is connected to the carrier plate to drive the carrier plate to slide along the slide rail.

5. The height-adjustable riveting device according to claim 4, characterized in that: When the sliding block and the fixing seat slide relative to each other in the first direction, the total thickness of the sliding block and the fixing seat can be adjusted; the first thickness is different from the second thickness, and the length of the first rivet is different from the length of the second rivet; the sliding rail is arranged along the first direction.

6. The height-adjustable riveting device according to claim 4, wherein: The tooling mechanism also includes an intermediate support plate, which is fixed to the fixed base plate. The slide rail is arranged on the intermediate support plate. The intermediate support plate is provided with a hollow hole. The sliding block is arranged in the hollow hole. During the relative sliding process between the sliding block and the fixed seat, the sliding block and the hollow hole do not contact each other.

7. The height-adjustable riveting device according to claim 1, wherein: The annular limiting structure includes a supporting block and / or a limiting column, the supporting block supports the bottom surface of the workpiece to be riveted, and the limiting column clamps the edge of the workpiece to be riveted.

8. The height-adjustable riveting device according to claim 1, wherein: The bottom surface of the sliding block and the top surface of the fixing seat have the same area. During the relative sliding process of the sliding block and the fixing seat, the bottom surface of the sliding block always abuts against the top surface of the fixing seat, and the top surface of the sliding block remains horizontal.

9. The height-adjustable riveting device according to claim 1, wherein: The height-adjustable riveting equipment also includes a turntable mechanism, at least one tooling mechanism is arranged on the turntable mechanism, at least one pressure riveting mechanism is arranged on one side of the turntable mechanism, the tooling mechanism on the turntable mechanism can be arranged corresponding to the pressure riveting mechanism, and the punching head of the pressure riveting mechanism is arranged directly above the tooling mechanism.

10. The height-adjustable riveting device according to claim 9, wherein: The height-adjustable riveting equipment also includes an outer frame and a bushing pre-installation mechanism; the bushing pre-installation mechanism is arranged on one side of the turntable mechanism, and the bushing pre-installation mechanism can punch and pre-install the first rivet or the second rivet on the workpiece to be riveted, and the turntable mechanism, the press riveting mechanism and the bushing pre-installation mechanism are all fixed on the outer frame.

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