Rivet pulling head automatic replacing structure and rivet pulling head feeding system

Abstract

The utility model relates to the technical field of rivet pulling head replacement, in particular to an automatic rivet pulling head replacement structure and a rivet pulling head feeding system.The automatic rivet pulling head replacement structure comprises an XY operation table, an installation plate is installed on the XY operation table, an air pressure gun and an object placing plate are installed on the installation plate, and a reciprocating assembly is arranged on the object placing plate; the reciprocating assembly comprises a reciprocating plate slidably arranged on the storage plate, the reciprocating plate is provided with a replacement assembly, the replacement assembly comprises a switching structure and a lifting structure, the switching structure comprises a rotating disc installed on the reciprocating plate, the rotating disc is provided with multiple sets of storage pieces in the circumferential direction of the rotating disc, and the storage pieces are connected with the lifting structure through rotating structures; when the reciprocating plate moves to the position under the air pressure gun, the lifting structure acts and can drive the rotating disc to ascend, suspend and descend, in the action process of the rotating disc, the lifting structure can drive the rotating structure to act so that the placing piece can rotate automatically, and therefore the rivet nut placed in the placing piece can be installed on the air pressure gun.

Description

Technical Field

[0001] This utility model relates to the field of rivet head replacement technology, specifically an automatic rivet head replacement structure and a rivet head feeding system. Background Technology

[0002] Riveting is a cold joining technique used to connect two or more metal sheets. Rivet heads, also known as rivet nuts or riveting caps, are used in the fastening of various metal sheets or pipes in manufacturing industries. Riveting does not require tapping internal threads and offers the advantage of a strong connection. Currently, the tools used for riveting nuts are generally pneumatic rivet guns. During riveting operations, the rivet head usually needs to be installed on the rivet gun (pneumatic gun) before the riveting operation. The rivet head needs to be changed frequently during the riveting process. However, changing the rivet head is quite complex and requires precise adjustment of the gun head and the rivet head's position. Inaccurate alignment can lead to improper installation, resulting in riveting failure or quality problems. Utility Model Content

[0003] The purpose of this utility model is to provide an automatic rivet head replacement structure and a rivet head feeding system to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An automatic rivet head changing structure includes: an XY operating table, an mounting plate mounted on the XY operating table, a pneumatic gun and a placement plate mounted on the mounting plate, a reciprocating assembly on the placement plate, the reciprocating assembly including a reciprocating plate slidably disposed on the placement plate, a changing assembly on the reciprocating plate, the changing assembly including a switching structure and a lifting structure, the switching structure including a turntable mounted on the reciprocating plate, the turntable having multiple sets of placement components equidistantly arranged along its circumference, the placement components being connected to the lifting structure via a rotating structure; when the reciprocating plate moves directly below the pneumatic gun, the lifting structure actuates, driving the turntable to rise, hover, and descend; and during the turntable's actuation, the lifting structure drives the rotating structure to actuate, causing the placement components to rotate, thereby installing the rivet nut placed within the placement component onto the pneumatic gun.

[0006] The automatic rivet head replacement structure described above includes a reciprocating assembly further comprising pulleys rotatably mounted on the shelf. Two sets of pulleys are arranged along the length of the shelf, and a belt is provided between the two sets of pulleys. A protruding post is fixedly provided on the side of the belt facing the reciprocating plate, and the protruding post is slidably disposed in a groove opened on the reciprocating plate.

[0007] As described above, the automatic rivet head replacement structure has the following features: a plug-in cylinder is coaxially fixed on the side of the turntable facing the reciprocating plate; the plug-in cylinder is slidably connected to a plug-in rod rotatably mounted on the reciprocating plate; a ratchet is coaxially fixed on the plug-in rod; and the ratchet engages with a ratchet plate mounted on the shelf.

[0008] The automatic rivet head replacement structure described above includes a lifting structure comprising a drive rod rotatably mounted on the reciprocating plate, a lifting sleeve sleeved on the drive rod, the lifting sleeve being fixedly connected to the insertion sleeve, and a protrusion formed on the inner wall of the lifting sleeve, the protrusion engaging with a fitting groove formed on the outer wall of the drive rod, thereby driving the turntable to slide relative to the insertion rod.

[0009] The automatic rivet head replacement structure described above includes a spiral rising groove, a spiral descending groove, and a horizontal groove formed on the outer wall of the drive rod.

[0010] The automatic rivet head replacement structure described above includes a rotating sleeve rotatably mounted on the insert sleeve. A toothed ring is coaxially fixed on the rotating sleeve, and the rotating sleeve is connected to the drive rod through a linkage structure.

[0011] The automatic rivet head replacement structure described above includes a driven gear coaxially fixed on the rotating sleeve, which meshes with a master gear coaxially fixed on the drive rod.

[0012] The automatic rivet head replacement structure described above includes a placement cylinder rotatably mounted on the turntable. Multiple sets of placement cylinders are equidistantly arranged along the circumference of the turntable, and each set of placement cylinders is coaxially fixed with a driven gear.

[0013] A rivet head feeding system is also proposed, including the automatic rivet head changing structure described above.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] By setting up a reciprocating component, the reciprocating component can be driven to slide relative to the placement plate, so that the replacement component can move to the bottom of the air gun, thereby providing the prerequisite for the subsequent replacement of the rivet head, so that the rivet head and the air gun remain coaxial, and at the same time, it can avoid the replacement component from interfering with the air gun that is performing riveting operations normally.

[0016] When the reciprocating plate moves the replacement component to the lower position of the pneumatic gun, the lifting mechanism in the replacement component drives the turntable to rise a certain distance, maintain a certain height, and then descend to reset. During this process, the lifting and rotating mechanisms work together to drive the placement component on the turntable to rotate, thereby accurately installing the rivet nut inside the placement component onto the pneumatic gun, completing the rivet head replacement operation. The whole process is convenient and quick, requiring no external assistance, and can achieve the purpose of automatic rivet head replacement. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure for automatic rivet head replacement.

[0018] Figure 2 This is a schematic diagram of the connection between the pneumatic gun, the reciprocating assembly, and the replacement assembly in the automatic rivet head replacement structure.

[0019] Figure 3 A schematic diagram of the connection between the reciprocating component and the replacement component in the automatic rivet head replacement structure.

[0020] Figure 4 A schematic diagram of the reciprocating component in the automatic rivet head replacement structure.

[0021] Figure 5 A schematic diagram of the connection between the replacement component and the reciprocating part in the automatic rivet head replacement structure.

[0022] Figure 6 A schematic diagram of the structure connecting the turntable and the plug rod in the automatic rivet head replacement structure.

[0023] Figure 7 A schematic diagram of the fit between the placement component and the rotating structure in the automatic rivet head replacement structure.

[0024] Figure 8 A schematic diagram of the lifting sleeve in the automatic rivet head replacement structure.

[0025] Figure 9 A schematic diagram of the fitting groove on the drive rod in the automatic rivet head replacement structure.

[0026] Figure 10 A schematic diagram of the spiral ascending groove and spiral descending groove on the drive rod in the automatic rivet head replacement structure.

[0027] In the diagram: 1. XY control panel; 2. Mounting plate; 201. Drive unit; 3. Shelf; 301. Snap-fit ​​groove; 4. Turntable; 5. Air gun; 6. Belt; 601. Protrusion; 7. Reciprocating plate; 701. Slide groove; 702. Snap-fit ​​rod; 8. Placement cylinder; 801. Rivet nut; 9. Driven gear; 10. Pulley; 11. First motor; 12. Second motor; 13. Ratchet plate; 14. Ratchet; 15. Plug-in rod; 16. Drive rod; 1601. Horizontal groove; 1602. Spiral rising groove; 1603. Spiral descending groove; 17. Main gear; 18. Gear ring; 19. Rotating sleeve; 20. Driven gear; 21. Plug-in cylinder; 22. Lifting sleeve; 2201. Protrusion; 23. Adapter hole. Detailed Implementation

[0028] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0029] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0030] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0031] Please see Figures 1-10 In this embodiment of the utility model, an automatic rivet head replacement structure includes:

[0032] XY operating table 1, the XY operating table 1 is equipped with an mounting plate 2, the mounting plate 2 is equipped with a pneumatic gun 5 and a storage plate 3. When the XY operating table 1 is working, it can drive the mounting plate 2 to move horizontally or vertically. After the pneumatic gun 5 on the mounting plate 2 moves to the designated position, the driving component 201 on the mounting plate 2 can drive the pneumatic gun 5 to move, thereby completing the riveting operation of the workpiece.

[0033] The storage plate 3 is provided with a reciprocating assembly, which includes a reciprocating plate 7 slidably disposed on the storage plate 3. The reciprocating plate 7 is provided with a replacement assembly, which includes a switching structure and a lifting structure. The switching structure includes a turntable 4 mounted on the reciprocating plate 7. The turntable 4 is provided with multiple sets of placement components at equal intervals along its circumference. The placement components are connected to the lifting structure through a rotating structure. When the reciprocating plate 7 moves directly below the air pressure gun 5, the lifting structure is activated, which can drive the turntable 4 to rise, hover, and fall. During the operation of the turntable 4, the lifting structure can drive the rotating structure to rotate, thereby installing the rivet nut 801 placed in the placement component onto the air pressure gun 5.

[0034] The reciprocating assembly also includes pulleys 10 rotatably mounted on the shelf 3. Two sets of pulleys 10 are arranged along the length of the shelf 3. A belt 6 is arranged between the two sets of pulleys 10. A protruding post 601 is fixedly arranged on the side of the belt 6 facing the reciprocating plate 7. The protruding post 601 is slidably arranged in a groove 701 opened on the reciprocating plate 7.

[0035] For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 One of the aforementioned pulleys 10 is coaxially fixed to the output shaft of the first motor 11 fixedly mounted on the shelf 3, and a locking rod 702 is fixedly mounted on the side of the reciprocating plate 7 facing the shelf 3. The locking rod 702 is slidably mounted in the locking groove 301 opened on the shelf 3. With the cooperation of the locking rod 702 and the locking groove 301, the reciprocating plate 7 can only slide along the length direction of the shelf 3.

[0036] Combination Figure 3 In the initial state, the reciprocating plate 7 is far away from the pneumatic gun 5. When the first motor 11 enters the working state, the output shaft of the first motor 11 can drive the pulley 10 to rotate continuously in the same direction for a certain number of turns and then stop. When the output shaft of the first motor 11 rotates, the pulley 10 can drive the belt 6 to rotate. During this process, the protrusion 601 can slide in the slide groove 701. During the sliding process, the contact and compression of the protrusion 601 against the groove wall of the slide groove 701 can drive the reciprocating plate 7 to move along the snap-fit ​​groove 301 toward the pneumatic gun 5 until the output shaft of the first motor 11 stops rotating. At this time, one of the sets of placement parts on the turntable 4 is coaxial with the pneumatic gun 5, thus providing the prerequisite for the connection of the rivet nut 801 in the subsequent placement parts to the pneumatic gun 5.

[0037] A plug-in cylinder 21 is coaxially fixed on the side of the turntable 4 facing the reciprocating plate 7. The plug-in cylinder 21 is slidably connected to the plug-in rod 15 rotatably mounted on the reciprocating plate 7. A ratchet 14 is coaxially fixed on the plug-in rod 15. The ratchet 14 cooperates with the ratchet plate 13 set on the storage plate 3.

[0038] Specifically, please see Figure 4 , Figure 6 The aforementioned plug rod 15 is provided with a section that is shaped like... Figure 4 The figure shows a cross-shaped structure, and the plug-in cylinder 21 has an adapter hole 23. The adapter hole 23 is adapted to the cross-shaped structure of the plug-in rod 15. With the cooperation of the cross-shaped structure and the adapter hole 23, the turntable 4 and the plug-in cylinder 21 can only slide relative to the plug-in rod 15. A damping sleeve is provided between the plug-in rod 15 and the reciprocating plate 7. Under the action of the damping sleeve, the plug-in cylinder 21 and the turntable 4 cannot easily rotate relative to the reciprocating plate 7.

[0039] It should be further explained that the aforementioned ratchet plate 13 is rotatably mounted with multiple sets of pawls along its length. The pawls are elastically connected to the ratchet plate 13 through spring plates. With the cooperation of the spring plates, the pawls can always remain open when not subjected to external force. When the belt 6 rotates, driving the reciprocating plate 7 toward the air gun 5, the ratchet 14 can cooperate with the pawls, thereby driving the plug rod 15, plug cylinder 21 and turntable 4 to rotate at a certain angle, so that the placement parts on the turntable 4 can alternately keep coaxial with the air gun 5, so that the rivet nut 801 placed on the placement parts can be connected to the air gun 5.

[0040] For further details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 10 The lifting structure includes a drive rod 16 rotatably mounted on the reciprocating plate 7. For details, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5The aforementioned drive rod 16 is connected to the output shaft of the second motor 12, which is fixedly mounted on the reciprocating plate 7, via a linkage belt. Specifically, the second motor 12 is communicatively connected to the first motor 11: when the rivet head needs to be replaced, the first motor 11 works first, driving the belt 6 to rotate half a turn, forcing the reciprocating plate 7 to approach the pneumatic gun 5 and then stopping. Immediately afterward, the second motor 12 enters the working state, driving the drive rod 16 to rotate one turn and then stopping. During this process, the drive rod 16 cooperates with the rotating structure to drive the turntable 4 and the placement part to move, thereby installing the rivet nut 801 onto the pneumatic gun 5. After the rivet nut 801 is installed onto the pneumatic gun 5, the first motor 11 drives the belt 6 to rotate half a turn again, forcing the reciprocating plate 7 back to its initial position. Then, the first motor 11 and the second motor 12 stop working synchronously until the next rivet head replacement, at which point the first motor 11 and the second motor 12 can repeat the above operation.

[0041] In detail, a lifting sleeve 22 is sleeved on the drive rod 16. The lifting sleeve 22 is fixedly connected to the plug-in sleeve 21. A protrusion 2201 is formed on the inner wall of the lifting sleeve 22. The protrusion 2201 cooperates with the fitting groove opened on the outer wall of the drive rod 16, which can drive the turntable 4 to slide relative to the plug-in rod 15.

[0042] The fitting groove includes a spiral rising groove 1602, a spiral descending groove 1603, and a horizontal groove 1601 formed on the outer wall of the drive rod 16;

[0043] For preferred options, please refer to [link / reference]. Figure 7 , Figure 10 In the initial state, the protrusion 2201 is located at the bottom of the valley formed by the connection of the spiral rising groove 1602 and the spiral descending groove 1603. When the rivet head needs to be replaced, the first motor 11 first enters the working state, driving the belt 6 to rotate continuously in the same direction for half a revolution, so that the reciprocating plate 7 drives the turntable 4 to move to the end of the stroke of the snap-fit ​​groove 301. During this process, the ratchet 14 cooperates with the ratchet plate 13 to drive the turntable 4 to rotate a certain angle, so that one of the placement parts on the turntable 4 is kept coaxial with the air pressure gun 5, thereby achieving precise positioning of the rivet head and the air pressure gun. Subsequently, the first motor 11 stops working, and the second motor 12 enters the working state, driving the drive rod 16 to rotate counterclockwise one revolution (refer to...). Figure 7(Description) During this process, the rotating structure can drive the placement component on the turntable 4 to rotate. At the same time, the contact compression generated by the wall of the spiral rising groove 1602 on the protrusion 2201 can force the lifting sleeve 22 to drive the insertion sleeve 21 and the turntable 4 to move closer to the air gun 5 along the axial direction of the insertion rod 15 until the protrusion 2201 separates from the spiral rising groove 1602 and then engages with the horizontal groove 1601. At this time, the air gun 5 is inserted into the rivet nut 801, and the end of the air gun 5 contacts the threaded part of the inner wall of the rivet nut 801. When the subsequent drive rod 16 rotates, the protrusion 2201 slides in the horizontal groove 1601. At this time, the turntable 4 maintains a constant height. The placement component, driven by the rotation joint, can slowly install the rivet nut 801 onto the air gun 5 (the internal thread of the rivet nut 801 matches the external thread of the air gun 5). The rivet nut 801 can be connected to the pneumatic gun 5. When the protrusion 2201 separates from the horizontal groove 1601 and engages with the spiral descending groove 1603, the contact compression of the spiral descending groove 1603 against the protrusion 2201 forces the lifting sleeve 22 to drive the insertion sleeve 21 and the turntable 4 to descend. During this process, the placement part descends relative to the rivet nut 801 until the protrusion 2201 returns to its initial position, at which point the rivet nut 801 is completely detached from the placement part. Then the second motor 12 stops working, and the first motor 11 starts working, which can drive the reciprocating plate 7 and the turntable 4 to reset. After the reciprocating plate 7 returns to its initial position, the first motor 11 stops working. At this time, the rivet head replacement operation of the pneumatic gun 5 is completed. The whole process is quick and fast, and can automatically feed the pneumatic gun 5 and install the rivet nut 801.

[0044] For details, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 7 The rotating structure includes a rotating sleeve 19 rotatably mounted on the plug-in cylinder 21, a toothed ring 18 coaxially fixed on the rotating sleeve 19, and the rotating sleeve 19 is connected to the drive rod 16 through a linkage structure.

[0045] The linkage structure includes a driven gear 20 coaxially fixed on the rotating sleeve 19, and the driven gear 20 meshes with a main gear 17 coaxially fixed on the drive rod 16;

[0046] In particular, the thickness of the main gear 17 is much greater than that of the driven gear 20. Due to the thickness difference between the main gear 17 and the driven gear 20, the main gear 17 and the driven gear 20 can always maintain a meshing transmission state during the process of the turntable 4 rising and falling relative to the plug rod 15, thereby driving the gear ring 18 to rotate one revolution, thereby driving the placement component to rotate and installing the rivet nut 801 placed in the placement component onto the air gun 5.

[0047] The placement component includes a placement cylinder 8 rotatably mounted on the turntable 4. Specifically, the inner wall of the placement cylinder 8 is adapted to the rivet nut 801, such as... Figure 7 As shown, the inner wall of the placement cylinder 8 is formed with a rubber layer, which can increase the friction between the placement cylinder 8 and the rivet nut 801 so that when the placement cylinder 8 rotates, it can drive the rivet nut 801 to rotate synchronously, thereby installing the rivet nut 801 onto the air pressure gun 5. The placement cylinder 8 is arranged in multiple sets at equal intervals along the circumference of the turntable 4, and each set of the placement cylinder 8 is coaxially fixed with a driven gear 9.

[0048] For preferred options, please refer to [link / reference]. Figure 3 , Figure 6 , Figure 7 , Figure 8 The aforementioned placement cylinders 8 are arranged in six sets at equal intervals along the circumference of the turntable 4. Each set of placement cylinders 8 can hold rivet nuts 801 of different specifications. Correspondingly, when the ratchet plate 13 and ratchet wheel 14 are engaged, they can only drive the turntable 4 to rotate 60 degrees, so that when the reciprocating plate 7 is close to the air pressure gun 5, there is always a set of placement cylinders 8 on the turntable 4 that are coaxial with the air pressure gun 5. In particular, the radius of the gear ring 18 is much larger than the radius of the driven gear 9. Therefore, when the main gear 17 and driven gear 20 are engaged to drive the rotating sleeve 19 to rotate one revolution, the gear ring 18 can drive the driven gear 9 to rotate multiple revolutions, thereby installing the rivet nut 801 onto the air pressure gun 5 and realizing the replacement of the rivet head.

[0049] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic rivet head changing structure, characterized in that, include: An XY control panel (1) is provided, on which a mounting plate (2) is installed. A pneumatic gun (5) and a shelf (3) are mounted on the mounting plate (2). A reciprocating assembly is provided on the shelf (3). The reciprocating assembly includes a reciprocating plate (7) slidably mounted on the shelf (3). A replacement assembly is provided on the reciprocating plate (7). The replacement assembly includes a switching structure and a lifting structure. The switching structure includes a turntable (4) mounted on the reciprocating plate (7). Multiple sets of placement components are equidistantly arranged along its circumference. The placement components are connected to the lifting structure through a rotating structure. When the reciprocating plate (7) moves directly below the pneumatic gun (5), the lifting structure is activated, which can drive the turntable (4) to rise, hover, and fall. During the operation of the turntable (4), the lifting structure can drive the rotating structure to rotate, thereby installing the rivet nut (801) placed in the placement component onto the pneumatic gun (5).

2. The automatic rivet head replacement structure according to claim 1, characterized in that, The reciprocating assembly also includes pulleys (10) rotatably mounted on the shelf (3). Two sets of pulleys (10) are arranged along the length of the shelf (3). A belt (6) is arranged between the two sets of pulleys (10). A protrusion (601) is fixedly arranged on the side of the belt (6) facing the reciprocating plate (7). The protrusion (601) is slidably arranged in a groove (701) opened on the reciprocating plate (7).

3. The automatic rivet head replacement structure according to claim 2, characterized in that, A plug tube (21) is coaxially fixed on the side of the turntable (4) facing the reciprocating plate (7). The plug tube (21) is slidably connected to the plug rod (15) rotatably mounted on the reciprocating plate (7). A ratchet (14) is coaxially fixed on the plug rod (15). The ratchet (14) cooperates with the ratchet plate (13) set on the storage plate (3).

4. The automatic rivet head replacement structure according to claim 3, characterized in that, The lifting structure includes a drive rod (16) rotatably mounted on the reciprocating plate (7), a lifting sleeve (22) sleeved on the drive rod (16), the lifting sleeve (22) being fixedly connected to the plug-in cylinder (21), and a protrusion (2201) being formed on the inner wall of the lifting sleeve (22). The protrusion (2201) cooperates with the fitting groove opened on the outer wall of the drive rod (16), which can drive the turntable (4) to slide relative to the plug-in rod (15).

5. The automatic rivet head replacement structure according to claim 4, characterized in that, The fitting groove includes a spiral rising groove (1602), a spiral descending groove (1603), and a horizontal groove (1601) formed on the outer wall of the drive rod (16).

6. The automatic rivet head replacement structure according to claim 4, characterized in that, The rotating structure includes a rotating sleeve (19) rotatably mounted on the plug tube (21), a toothed ring (18) is coaxially fixed on the rotating sleeve (19), and the rotating sleeve (19) is connected to the drive rod (16) through a linkage structure.

7. The automatic rivet head replacement structure according to claim 6, characterized in that, The linkage structure includes a driven gear (20) coaxially fixed on the rotating sleeve (19), and the driven gear (20) meshes with a master gear (17) coaxially fixed on the drive rod (16).

8. The automatic rivet head replacement structure according to claim 4, characterized in that, The placement component includes a placement cylinder (8) rotatably mounted on the turntable (4). Multiple sets of placement cylinders (8) are equidistantly arranged along the circumferential direction of the turntable (4), and each set of placement cylinders (8) is coaxially fixed with a driven gear (9).

9. A rivet head feeding system, characterized in that, The invention includes an automatic rivet head replacement structure as described in claim 1.

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