Super-quiet hollow riveter

Abstract

The utility model discloses a kind of super-silent hollow rivet machines, belong to rivet machine technical field, including die carrier, linkage block, stamping shaft, upper die head, lower die head, drive assembly and feeding assembly, riveting station is formed between upper die head and lower die head, drive assembly includes power source and eccentric shaft, stamping shaft is connected with eccentric shaft by linkage block and slides up and down along die carrier, feeding assembly includes vibrating disc, track body, swing block and first spring, swing block is hinged to die carrier and one end is located on eccentric shaft rotation track, track body one end is hinged to die carrier and is equipped with top rod, first spring makes top rod abut swing block, the discharge part of track body can switch between the feeding position of riveting station and the riveting position far away;In the utility model, eccentric shaft is rotated by drive assembly, while realizing the reciprocating motion of stamping shaft up and down and track body discharge part position switching, complete automatic feeding and riveting, without artificial preloading, riveting efficiency is improved, and safety risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of riveting machine technology, specifically to an ultra-quiet hollow riveting machine. Background Technology

[0002] A riveting machine is a specialized piece of equipment that uses pressure or impact to plastically deform rivets, thereby fastening two or more parts together. Its core working principle involves using a pneumatic, hydraulic, or electric power source to drive a stamping mechanism that compresses or forges the rivet, which is pre-inserted into a workpiece hole, causing its end to expand and form a rivet head, thus achieving a reliable mechanical connection. The equipment is typically equipped with a positioning device to ensure rivet installation accuracy and includes key components such as a machine bed, power system, and actuator.

[0003] In existing technologies, most riveting machines require manual pre-installation of rivets on the workpiece before riveting, which not only results in low riveting efficiency but also poses safety risks. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide an ultra-quiet hollow riveting machine.

[0005] The technical solution adopted by this utility model is as follows: In the first aspect, this application provides an ultra-quiet hollow riveting machine, including a mold frame, a linkage block, a stamping shaft, an upper die head, a lower die head, a drive assembly, and a feeding assembly. A riveting station is formed between the upper die head and the lower die head. The drive assembly includes a power source and an eccentric shaft. The stamping shaft is slidably disposed along the mold frame and is connected to the eccentric shaft through the linkage block. The feeding assembly includes a vibratory feeder, a track body, a swing block, and a first spring. The swing block is hinged to the mold frame and one end is located on the rotation trajectory of the eccentric shaft. The end of the track body near the vibratory feeder is hinged to the mold frame and a push rod is provided facing the swing block. The first spring is disposed between the track body and the mold frame to make the push rod abut against the swing block. The track body includes a discharge part. The power source drives the eccentric shaft to rotate, causing the stamping shaft to reciprocate up and down along the mold frame, while the discharge part has a feeding position located at the riveting station and a riveting position away from the riveting station.

[0006] In some embodiments, the eccentric shaft includes a first shaft portion connected to a power source, a second shaft portion cooperating with a linkage block, and an eccentric disk portion located between the first shaft portion and the second shaft portion. The swing block includes a linkage protrusion that is linked to the eccentric disk portion. When the discharge portion is in the feeding position, there is a gap between the linkage protrusion and the eccentric disk portion.

[0007] In some embodiments, a front cover is provided on the mold frame, and a transmission cavity is formed between the two. The linkage block is slidably disposed along the transmission cavity, and a linkage groove is provided on the side of the block near the second shaft. A sliding sleeve is provided on the second shaft, and a linkage is formed through the sliding sleeve and the linkage groove.

[0008] In some embodiments, an opening is provided on one side of the transmission cavity, the swing block passes through the opening and is provided with a swing plate, the width of the swing plate is greater than the width of the opening, and the swing plate abuts against the top rod.

[0009] In some embodiments, the top rod is provided with an arc-shaped abutment surface.

[0010] In some embodiments, a limiting baffle is provided on the mold frame, the limiting baffle being located on the side of the track body near the stamping shaft and on the movement path of the track body.

[0011] In some embodiments, the mold frame has a shock absorber bar located on the side of the track body near the stamping shaft and on the movement path of the track body, with an elastic buffer block provided at one end near the track body.

[0012] In some embodiments, a fixing rod is provided on the mold frame, two spring plates are provided at intervals on the fixing rod, a protective sleeve is provided on the spring plate, a semi-groove is provided on the protective sleeve, the semi-groos on the two protective sleeves are joined together to form a clamping cavity, an inlet is provided on the side of the clamping cavity facing the discharge part, and the clamping cavity and the upper mold head are coaxially arranged with the lower mold head.

[0013] In some embodiments, a baffle is hinged to the track body near the discharge section. A second spring is provided between one end of the baffle and the track body, and the other end of the baffle is used to block the discharge section under the action of the second spring. When the discharge section is in the feeding position, the end of the baffle used to block is opened by the protective sleeve.

[0014] In some embodiments, the system further includes a base with two guide rods disposed on the base. The mold frame slides along the two guide rods, and an adjustment bracket is disposed on the upper side of the two guide rods. An adjustment screw is disposed on the mold frame and connected to the adjustment bracket via the adjustment screw. The drive assembly further includes a frequency converter and a gearbox.

[0015] The beneficial effects of this utility model are as follows: By setting the feeding component and the driving component to be linked, when the power source drives the eccentric shaft to rotate, the stamping shaft can be moved up and down to perform riveting, and the material discharge part of the track body can be switched between the feeding position and the riveting position, thus realizing the automatic feeding of rivets without the need for manual pre-installation, improving riveting efficiency and reducing the safety risks caused by manual operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0017] Figure 1 This is a schematic diagram of an ultra-quiet hollow riveting machine according to the present invention. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of an ultra-quiet hollow riveting machine (with hidden front cover) according to the present invention;

[0019] Figure 3 This is a cross-sectional view of an ultra-quiet hollow riveting machine according to the present invention;

[0020] Figure 4 This is a schematic diagram of the track body, eccentric shaft, sliding sleeve, swing block and linkage block in this utility model;

[0021] Figure 5 This is a partial schematic diagram of an ultra-quiet hollow riveting machine according to the present invention. Figure 1 ;

[0022] Figure 6 This is a partial schematic diagram of an ultra-quiet hollow riveting machine according to the present invention. Figure 2 ;

[0023] Figure 7 This is a partial schematic diagram of an ultra-quiet hollow riveting machine according to the present invention. Figure 3 ;

[0024] Figure 8 This is a schematic diagram of an ultra-quiet hollow riveting machine according to the present invention. Figure 2 . Detailed Implementation

[0025] The following description provides specific application scenarios and requirements for this specification, intended to enable those skilled in the art to make and use the contents of this specification. Various partial modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but rather to the widest scope consistent with the claims.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "lateral", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element or component to have a specific orientation, or to be constructed and operated in a specific orientation.

[0027] It should be noted that the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are only used to distinguish different components and should not be construed as limiting the embodiments of this application.

[0028] It should be noted that the terms "installation," "setup," "equipped with," "connection," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral structures; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts.

[0029] It should be noted that the terms "in some embodiments," "exemplarily," and "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described in this application as "in some embodiments," "exemplarily," or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "in some embodiments," "exemplarily," and "for example" is intended to present the relevant concepts in a specific manner, meaning that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of this application.

[0030] Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Regarding the accompanying drawings of this application, it should be clearly understood that the drawings are for illustrative and descriptive purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not necessarily drawn to scale.

[0032] like Figures 1 to 8 As shown in the figure, this specification provides an ultra-quiet hollow riveting machine, including a mold frame 1, a linkage block 2, a stamping shaft 3, an upper die head 4, a lower die head 5, a drive assembly 6, and a feeding assembly 7. The riveting station formed between the upper die head 4 and the lower die head 5 is the area where the riveting action is realized, and the coordinated operation of all components revolves around the precise operation of this station.

[0033] The drive assembly 6 includes a power source 60, an eccentric shaft 61, a frequency converter 62, and a gearbox 63. The power source 60 is preferably a servo motor, which is rigidly connected to the eccentric shaft 61 via the gearbox 63. The frequency converter 62 can steplessly adjust the output speed of the power source 60 by regulating the power supply frequency of the motor. Combined with the gear ratio switching of the gearbox 63, it can meet various riveting requirements, from low-speed, high-precision to high-speed, high-efficiency. This dual-adjustment mechanism not only adapts to the plastic deformation characteristics of rivets made of different materials, such as aluminum alloys, copper, and iron, but also flexibly adjusts the stamping pressure according to the workpiece thickness, significantly improving the equipment's process compatibility.

[0034] The eccentric shaft 61 adopts an integrated structure, including a first shaft part 610 connected to the power source 60, a second shaft part 611 cooperating with the linkage block 2, and an eccentric disk part 612 located between the two. This structural design can simultaneously convert the rotational motion of the power source into the linear motion of the stamping shaft and the oscillating motion of the feeding assembly, realizing multi-action coordination of a single power source. Compared with the traditional multi-power source drive scheme, it not only reduces the equipment manufacturing cost, but also reduces transmission loss.

[0035] The stamping shaft 3 slides up and down along the die frame 1 and is connected to the eccentric shaft 61 via the linkage block 2. The die frame 1 is equipped with a front guard 8, which together form a transmission cavity 8. The linkage block 2 slides up and down along the transmission cavity 8, thus protecting the transmission mechanism and achieving a quiet operation. The linkage block 2 has a rectangular cross-section linkage groove 200 on the side near the second shaft portion 611. A self-lubricating sliding sleeve 9, which can be made of copper, is nested on the second shaft portion 611. The sliding sleeve 9 and the linkage groove 200 form a surface contact sliding fit. Compared with the traditional bearing hinge method, this transmission structure not only avoids stamping accuracy deviation caused by gap wobble but also improves transmission efficiency. At the same time, the self-lubricating characteristic reduces the frequency of regular maintenance.

[0036] The feeding assembly 7 is the core innovation for achieving automated operation. It includes a vibratory feeder 70, a track 71, a swing block 72, and a first spring 73. The vibratory feeder 70 uses high-frequency electromagnetic vibration to automatically sort randomly stacked hollow rivets along a spiral track. Its inner wall is lined with a flexible rubber layer, which can prevent scratches on the rivet surface and reduce collision noise. After being sorted by the vibratory feeder 70, the rivets enter the track 71 in a horizontal axial position. The cross-section of the conveying channel of the track 71 matches the shape of the rivets, ensuring that the rivets will not flip or get stuck during the conveying process. The end of the track 71 near the vibratory feeder 70 is hinged to the mold frame 1. A push rod 74 is welded to the side of the track 71 facing the swing block 72. The end of the push rod 74 is machined into an arc-shaped contact surface. This curved surface design ensures that the contact between the push rod 74 and the swing block 72 is always in a line contact state, which can effectively reduce frictional resistance during the swinging process and significantly extend the service life of the components.

[0037] The first spring 73 is a tension spring, with one end hooked to the spring seat of the track body 71 and the other end fixed to the hanging shaft of the mold frame 1, ensuring that the push rod 74 is always in close contact with the swing block 72, providing stable power for the reset of the track body 71.

[0038] The swing block 72 is hinged to the mold frame 1, and the linkage protrusion 720 at one end is located exactly on the rotation trajectory of the eccentric disk 612. The side wall of the transmission cavity 8 has an opening 10, through which the swing block 72 extends to the outside of the cavity, and a swing plate 11 is fixed on the outside of the cavity. The swing plate 11 is made of Q235 steel plate and its width is 5mm-10mm larger than the opening 10. This ensures that the swing block 72 can swing freely while completely covering the opening 10, effectively preventing the lubricating oil in the transmission cavity from splashing to the outside, and also preventing external dust from entering and affecting the transmission accuracy. The swing plate 11 and the arc surface of the push rod 74 form a precise fit. When the eccentric disk 612 pushes the swing block 72 to swing, the swing plate 11 can efficiently transmit torque through the push rod 74, so that the track body 71 swings around the hinge point.

[0039] The track body 71 includes a discharge section 710, which is the final conveying link for the rivet to enter the riveting station. Its end is provided with a guide ramp, which can guide the rivet to enter the subsequent positioning mechanism in a vertical posture.

[0040] To ensure precise positioning of the rivet before riveting, a horizontally positioned fixing rod 15 is fixed on the die frame 1. Two spring plates 16 are installed on the fixing rod 15 at intervals via bolts. The free ends of the spring plates 16 are fixed with sleeves 17 by countersunk screws. Each of the two sleeves 17 has a semi-circular groove 170 machined on its opposite side. When the spring plates 16 are in their natural state, the two semi-grooves 170 align to form a clamping cavity 18 that matches the rivet. This clamping cavity 18 is coaxial with the upper die head 4 and the lower die head 5, ensuring that the rivet can withstand axial positive pressure during stamping and preventing riveting deformation due to eccentric force. A trumpet-shaped inlet 180 is provided on the side of the clamping cavity 18 facing the discharge section 710, with an expansion angle of 25°-30°. This guides the rivet smoothly into the clamping cavity, and even if there is a slight deviation during rivet feeding, automatic centering can be achieved through the guiding action of the inlet. The elastic force of the spring plate 16 is set to 8-10N, which can not only reliably clamp the rivet to prevent it from falling off, but also release the rivet through elastic deformation when the stamping shaft moves downward. Compared with the traditional pneumatic gripper, this elastic clamping structure is not only simple in structure and low in cost, but also eliminates the response delay problem of pneumatic components.

[0041] When the power source 60 drives the eccentric shaft 61 to rotate, the eccentric motion of the eccentric disk 612 pushes the swing block 72 to oscillate periodically. Through mechanical interlocking, the discharge section 710 switches between two key positions: when in the loading position, the end of the discharge section 710 precisely aligns with the inlet 180 of the clamping cavity 18. At this time, a gap is maintained between the linkage protrusion 720 and the eccentric disk 612. This gap design prevents the eccentric disk 612 from continuing to rotate and generating a reverse force on the swing block, ensuring the stability of the track body 71 during loading; when switching to the riveting position, the discharge section 710 quickly retracts to the side of the riveting station to avoid interference with the stamping shaft 3. This mechanically linked loading method ensures that the loading action and the stamping action are completely synchronized. Compared with traditional pneumatic loading mechanisms, the response speed is significantly improved, and there is no action delay caused by air pressure fluctuations.

[0042] The mold frame 1 is equipped with a dual protection mechanism on the movement path of the track body 71: one is a limiting baffle 12, there are two limiting baffles 12, which can accurately limit the maximum swing angle of the track body 71; the other is a shock absorber 13, which is located below the two limiting baffles 12. The elastic buffer block 14 at its end can be made of nitrile rubber. When the track body 71 swings rapidly to the riveting position, the buffer block can absorb the impact energy, significantly reducing the fatigue damage of the parts and extending the overall service life of the equipment.

[0043] The discharge section 710 of the track body 71 is also equipped with a leak-proof mechanism, including a hinged baffle 19 and a second spring 20. One end of the baffle 19 is connected to the track body 71 via the second spring 20, and the other end, under the action of the second spring 20, precisely blocks the outlet of the discharge section 710. When the track body 71 swings to the loading position, the free end of the baffle 19 will contact the protective sleeve 17 and be pushed open, at which time the outlet opens to allow the rivets to pass through; when the track body 71 leaves the loading position, the baffle 19 quickly resets under the action of the second spring 20 to close the outlet, preventing subsequent rivets from falling under gravity, thus completely eliminating the leakage problem during the non-loading stage.

[0044] The riveting machine also includes a base 21, made of HT300 gray cast iron, whose bottom is fixed to the ground with anchor bolts to ensure the stability of the equipment during operation. Two chrome-plated guide rods 22 are vertically fixed on the base 21. The mold frame 1 achieves smooth lifting and lowering along the guide rods 22 via linear bearings. An adjusting bracket 23 is fixed to the upper side of the guide rods 22 via a crossbeam. The adjusting screw 24 at the top of the mold frame 1 forms a helical engagement with the internal thread of the adjusting bracket 23. The operator can finely adjust the height of the mold frame 1 by rotating the adjusting screw, with an adjustment range of 0-150mm and an adjustment amount of 1mm per rotation. This allows for precise adaptation to the riveting requirements of workpieces of different thicknesses. Compared to electric adjustment, manual adjustment not only offers structural reliability and a low failure rate but also allows the operator to sense the stress state of the mold frame by hand, avoiding damage to components caused by over-adjustment.

[0045] The ultra-quiet hollow riveting machine adopts a fully automated, mechanically linked workflow, with the following specific steps:

[0046] Preparation before startup: Pour the hollow rivets into the vibratory feeder 70, and replace the matching upper die head 4, lower die head 5 and sheath 17 according to the rivet diameter. Set the height of the mold frame 1 by adjusting the screw 24 so that the top surface of the lower die head 5 is in contact with the bottom surface of the workpiece.

[0047] Automatic feeding stage: After the power source 60 is started, the eccentric shaft 61 rotates at a set speed under the control of the frequency converter 62 and the gearbox 63. When the eccentric disk 612 is not in contact with the swing block 72, the track body 71 swings to the feeding position under the action of the first spring 73. At this time, the baffle 19 is pushed open by the protective sleeve 17, and the rivets conveyed by the vibratory plate 70 enter the clamping cavity 18 from the discharge part 710 through the track body 71. The spring plate 16 drives the protective sleeve 17 to clamp and position the rivets.

[0048] During the riveting process: The eccentric shaft 61 continues to rotate, and the eccentric disc 612 pushes the swing block 72 to swing. Through the swing plate 11 and the push rod 74, the track body 71 is moved away from the loading position, and the baffle 19 resets to close the outlet. At the same time, the second shaft 611 of the eccentric shaft 61 drives the linkage block 2 downward through the sliding sleeve 9, which drives the stamping shaft 3 and the upper die head 4 to move downward quickly. The upper die head 4 and the lower die head 5 cooperate to apply axial pressure to the rivet in the clamping cavity, causing the rivet end to undergo plastic deformation to form a rivet head, thus completing the riveting.

[0049] Reset cycle stage: The stamping shaft 3 moves upward to reset under the drive of the eccentric shaft 61, and the track body 71 returns to the loading position under the action of the first spring 73, starting the next working cycle.

[0050] Throughout the entire process, the feeding and riveting actions are strictly synchronized through a mechanical structure. Compared with traditional riveting machines that require manual pre-assembly, production efficiency is greatly improved, while avoiding the safety hazard of fingers being accidentally injured by stamped parts during manual operation.

[0051] In summary, after reading this detailed disclosure, those skilled in the art will understand that the foregoing detailed disclosure is presented by way of example only and is not restrictive. Although not explicitly stated herein, those skilled in the art will understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be made by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0052] Furthermore, it should be understood that in the foregoing description of the embodiments of this application, various features are combined in a single embodiment, drawing, or description for the purpose of simplifying the understanding of a feature. However, this does not mean that the combination of these features is necessary, and those skilled in the art may readily identify some of the devices as separate embodiments when reading this application. That is, the embodiments in this application can also be understood as an integration of multiple sub-embodiments. It is also valid when each sub-embodiment contains fewer than all the features of a single foregoing disclosed embodiment.

[0053] Finally, it should be understood that the embodiments disclosed herein are illustrative of the principles of the embodiments of this application. Other modified embodiments are also within the scope of this application. Therefore, the embodiments disclosed herein are merely examples and not limitations. Those skilled in the art can adopt alternative configurations to implement the applications in this application based on the embodiments in this application. Therefore, the embodiments of this application are not limited to the embodiments precisely described in the application.

Claims

1. An ultra-quiet hollow riveting machine, characterized in that, The system includes a mold frame, a linkage block, a stamping shaft, an upper die head, a lower die head, a drive assembly, and a feeding assembly. A riveting station is formed between the upper and lower die heads. The drive assembly includes a power source and an eccentric shaft. The stamping shaft slides up and down along the mold frame and is connected to the eccentric shaft via the linkage block. The feeding assembly includes a vibratory feeder, a track body, a swing block, and a first spring. The swing block is hinged to the mold frame, with one end located on the rotation trajectory of the eccentric shaft. The end of the track body near the vibratory feeder is hinged to the mold frame, and a push rod is provided facing the swing block. The first spring is disposed between the track body and the mold frame to allow the push rod to abut against the swing block. The track body includes a discharge section. The power source drives the eccentric shaft to rotate, causing the stamping shaft to reciprocate up and down along the mold frame. Simultaneously, the discharge section has a feeding position located at the riveting station and a riveting position away from the riveting station.

2. The ultra-quiet hollow riveting machine according to claim 1, characterized in that, The eccentric shaft includes a first shaft portion connected to a power source, a second shaft portion cooperating with a linkage block, and an eccentric disk portion located between the first shaft portion and the second shaft portion. The swing block includes a linkage protrusion that is linked to the eccentric disk portion. When the discharge portion is in the feeding position, there is a gap between the linkage protrusion and the eccentric disk portion.

3. The ultra-quiet hollow riveting machine according to claim 2, characterized in that, The mold frame is provided with a front cover, and a transmission cavity is formed between the two. The linkage block is slidably disposed along the transmission cavity, and a linkage groove is provided on the side of the block near the second shaft. A sliding sleeve is provided on the second shaft, and a linkage is formed through the sliding sleeve and the linkage groove.

4. The ultra-quiet hollow riveting machine according to claim 3, characterized in that, An opening is provided on one side of the transmission cavity, the swing block passes through the opening and is provided with a swing plate, the width of the swing plate is greater than the width of the opening, and the swing plate abuts against the top rod.

5. The ultra-quiet hollow riveting machine according to claim 1 or 4, characterized in that, The top rod is provided with an arc-shaped abutment surface.

6. The ultra-quiet hollow riveting machine according to claim 1, characterized in that, The mold frame is provided with a limiting baffle, which is located on the side of the track body near the stamping shaft and on the movement path of the track body.

7. The ultra-quiet hollow riveting machine according to claim 1 or 6, characterized in that, The anti-collision bar on the mold frame is located on the side of the track body near the stamping shaft and on the movement path of the track body, and an elastic buffer block is provided at the end of the anti-collision bar near the track body.

8. The ultra-quiet hollow riveting machine according to claim 1, characterized in that, The mold frame is provided with a fixing rod, and two spring plates are provided at intervals on the fixing rod. The spring plates are provided with a protective sleeve, and the protective sleeve is provided with a semi-groove. The semi-grooves on the two protective sleeves are joined together to form a clamping cavity. The clamping cavity is provided with an inlet on the side facing the discharge part. The clamping cavity and the upper mold head are arranged coaxially with the lower mold head.

9. The ultra-quiet hollow riveting machine according to claim 8, characterized in that, A baffle plate is hinged to the track body near the discharge section. A second spring is provided between one end of the baffle plate and the track body. The other end of the baffle plate is used to block the discharge section under the action of the second spring. When the discharge section is in the feeding position, the end of the baffle plate used to block is opened by the protective sleeve.

10. The ultra-quiet hollow riveting machine according to claim 1, characterized in that, It also includes a base with two guide rods, the mold frame slides along the two guide rods, and an adjustment bracket is provided on the upper side of the two guide rods. The mold frame is provided with an adjustment screw and is connected to the adjustment bracket through the adjustment screw. The drive assembly also includes a frequency converter and a gearbox.

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