Floating center needle adjustment table, riveting machine and riveted part manufacturing method

Abstract

The present invention discloses a floating center needle adjustment platform, a rivet machine and a method for manufacturing riveted parts, which relate to the field of metal machining and are used to optimize the structure of the floating center needle adjustment platform. The floating center needle adjustment platform includes a support body and a floating center needle. The support body includes at least two support arms, one end of each support arm is installed together, and the other end of each support arm is arranged at intervals; each support arm is provided with a mounting hole. A floating center needle is installed in each mounting hole. The floating center needle adjustment platform provided by the above technical solution has a plurality of support arms, each support arm is individually installed with a floating center needle, and the model of each floating center needle can be set as needed. For different models of rivets, corresponding models of floating center needles can be set.

Description

Technical Field

[0001] The invention relates to the field of metal machining, and in particular to a floating center needle adjustment table, a riveting machine and a riveted part manufacturing method. Background Art

[0002] In the related art, the riveting machine realizes the continuous operation of a certain type of rivet and a single workstation through a mechanical linkage mechanism.

[0003] The operation process of the riveting machine is as follows: each time a small batch of rivets of the same specification is put into the blanking hopper, and the clutch is continuously pressed to realize the same specification of rivets riveting the workpieces with the same riveting height. When rivets of different specifications need to be riveted, either the workpiece is handed over to other riveting machines loaded with rivets of this specification for operation, or the existing rivets in the hopper are cleared and replaced with rivets of the required specifications, and the bolts are readjusted to make the distance between the impact head and the arc-shaped head of the floating center needle rod adapt to the effective riveting length of the replaced rivet.

[0004] The inventors have discovered that the existing technical solutions for riveting machines lack flexibility, have low production efficiency, and occupy a lot of resources. First: a riveting machine can only realize the riveting of rivets of one specification. When it is necessary to rivet multiple specifications of rivets continuously on a riveting machine, it is obviously impossible to complete it. If you have to rivet rivets of multiple specifications on the same riveting machine, you must stop the operation and clean the hopper, re-rivet other specifications, and then readjust the riveting spacing of the floating center needle. The same group of workpieces often require multiple rivets of different specifications to be riveted. Obviously, the operation cannot be completed efficiently on a riveting machine, and it is even more impossible to perform riveting operations continuously. It is seriously lacking in flexibility and has low production efficiency. Secondly, the existing technical solutions for riveting machines use rivets of a single specification deployed on multiple riveting machines to complete the riveting operation. The riveted semi-finished products need to be temporarily stored and moved across workstations, which takes time, low production efficiency, and multiple riveting machines are required, which occupy a lot of resources. Summary of the invention

[0005] The invention provides a floating center needle adjustment platform, a riveting machine and a riveted parts manufacturing method, which are used to optimize the structure of the floating center needle adjustment platform.

[0006] An embodiment of the present invention provides a floating center needle adjustment platform, comprising:

[0007] A support body, comprising a connecting member and at least two supporting arms, one end of each of the supporting arms is fixedly mounted on the connecting member, and the other ends of each of the supporting arms are arranged at intervals; each of the supporting arms is provided with a mounting hole; and

[0008] A floating center needle is installed in each of the installation holes.

[0009] In some embodiments, the floating center needle adjustment stage further comprises:

[0010] An adjusting member is installed at the bottom of at least one of the mounting holes, and the adjusting member abuts against the floating center needle; the adjusting member is configured to adjust the mounting position of the floating center needle in the mounting hole.

[0011] In some embodiments, the adjustment member comprises a screw.

[0012] In some embodiments, the floating center needle adjustment stage further comprises:

[0013] A rotating member is fixed at a middle position of the connecting member and is configured to be rotatably connected to a mounting seat of a riveting machine; or, the rotating member is rotatably mounted at a middle position of the connecting member and is configured to be fixedly connected to a mounting seat of a riveting machine.

[0014] In some embodiments, the number of the support arms is three, and the edge of the connecting member is provided with three protrusions, and each protrusion corresponds to and is fixedly connected to one of the support arms.

[0015] In some embodiments, the three support arms are arranged at intervals of 120°.

[0016] In some embodiments, the number of the support arms is four or more, some of which are fixed arms and the rest are movable arms; one end of each of the fixed arms is fixedly connected, and one end of the movable arm is rotatably connected to one end of the fixed arm.

[0017] In some embodiments, a movable arm is disposed between two adjacent fixed arms.

[0018] Some other embodiments of the present invention provide a riveting machine, comprising:

[0019] The main body of the fuselage, including the mounting base; and

[0020] The floating center needle adjustment platform provided by any technical solution of the present invention is rotatably mounted on the mounting seat.

[0021] In some embodiments, the riveting machine further comprises:

[0022] A feed trough, wherein the feed trough corresponds to the support arm one by one, the feed trough is configured to provide rivets to the support arm, and the rivets in at least two of the feed troughs have different specifications.

[0023] In some embodiments, each of the feed troughs is equipped with a rivet release switch and a rivet release control device, and the rivet release control device is controlled and connected to the rivet release switch so that the rivet release switch switches between the following two states: a normally closed state for preventing the rivet from falling, and an open state for allowing the rivet to fall.

[0024] In some embodiments, the rivet release switch comprises:

[0025] an upper head portion having a first inclined surface; and

[0026] The lower head has a second inclined surface, the first inclined surface and the second inclined surface are opposite to each other and there is a gap therebetween that can accommodate only one rivet;

[0027] Wherein, when the rivet release switch is in a normally closed state, the rivet located between the first inclined surface and the second inclined surface cannot slide into the impact head;

[0028] When the rivet release control device drives the rivet release switch to switch from the normally closed state to the open state: the upper head and the lower head of the rivet release switch move synchronously, and the rivet located between the first inclined surface and the second inclined surface leaves the control of the lower head and slides along the feed trough to the impact head, and at the same time, the upper head crosses the feed trough to squeeze the queued rivets out of the upper head;

[0029] When the rivet release control device drives the rivet release switch to switch from an open state to a normally closed state, the upper head releases the restriction on the rivet located above the upper head, and at the same time the lower head returns to block the feed trough, so that the rivet enters between the upper head and the lower head of the rivet release switch in the normally closed state.

[0030] In some embodiments, the rivet release control device comprises:

[0031] A first marble assembly, each of the support arms is equipped with a first marble assembly;

[0032] Contact switch, the top surface of the mounting seat is provided with grooves, the number of the grooves corresponds to the number of the support arms, and a contact switch is installed in each of the grooves;

[0033] A time delay relay switch, mounted on the rivet body and connected to each of the contact switches; and

[0034] A first electromagnet is directly connected to the upper head and the lower head of the rivet release switch, and a time delay relay switch is connected to each of the first electromagnets;

[0035] Among them, the delay relay switch is electrically connected to the power supply that drives the first electromagnet to move; when the support arm marble assembly of a group of the support arms rotates to align with the contact switch, the delay relay switch is energized; if the support arm continues to stop for more than a set time, that is, the circuit is continuously energized, indicating that the support arm is used for riveting operations, and the continuous power-on time exceeds the delay length of the delay relay, then the first electromagnet is turned on, and the corresponding first electromagnet drives the corresponding rivet release switch of the group to switch from a normally closed state to an open state, and a rivet in the feed trough corresponding to the rivet release switch is released and slides into the impact head.

[0036] In some embodiments, the fuselage body further comprises:

[0037] The locking device is constructed to lock the support arm and the mounting seat in the riveted position; wherein the riveted position refers to a state in which the support arm is rotated to make any group of the first marble assembly and the contact switch abut against each other.

[0038] In some embodiments, the locking device comprises:

[0039] a positioning pin, telescopically mounted on the mounting seat; and

[0040] Positioning holes, each of the support arms is provided with the positioning holes, and each of the positioning holes is equidistant from the rotation center axis of the support arm; and

[0041] The positioning pin driving device is connected to the positioning pin to drive the positioning pin to extend and retract.

[0042] In some embodiments, the positioning pin driving device includes:

[0043] A second electromagnet is mounted on the mounting seat and connected to the positioning pin; the second electromagnet is configured to drive the positioning pin to protrude from the top surface of the mounting seat when the second electromagnet is in a normal state; and

[0044] An unlocking foot switch, mounted on the base of the main body of the fuselage, the foot switch being configured to be stepped on by an operator using a foot pedal to achieve closing;

[0045] Wherein, the second electromagnet, the unlocking foot switch and the power supply driving the electromagnet are all electrically connected; when the operator steps on the foot pedal to lock the unlocking foot switch and turns on the power, the second electromagnet drives the positioning pin to retract the mounting seat.

[0046] In some embodiments, the locking device further comprises:

[0047] A second marble assembly is mounted on the end surface of the mounting seat facing the support arm;

[0048] Wherein, the support arm is provided with grooves on the second surface facing the mounting seat, and the grooves cooperate with the second marble assembly.

[0049] In some embodiments, the locking device comprises:

[0050] An elastic clamping assembly, wherein a first mounting groove is provided on the top of the mounting seat, and the elastic clamping assembly is compressed and mounted in the first mounting groove; and

[0051] The second mounting groove is arranged at the bottom of the support arm, and the positions of the first mounting groove and the second mounting groove correspond to each other, so that after the support arm is rotated into place, the elastic clamping assembly restores its deformation and is clamped in the second mounting groove.

[0052] In some embodiments, the first mounting slot includes a first section hole and a second section hole, the elastic clamping assembly includes a spring, a positioning bayonet and an abutting rod, and the spring is pressed between the positioning bayonet and the abutting rod;

[0053] The positioning pin is located in the first section of the hole and is constructed to be able to slide along the first section of the hole; the rod portion of the push rod is located in the first section of the hole and the second section of the hole, the head of the push rod is located outside the second section of the hole, and the size of the head of the push rod is larger than the size of the second section of the hole.

[0054] In some embodiments, the riveting machine further comprises:

[0055] A track fixedly connected to each of the feed troughs; and

[0056] A robot is installed on the track and is configured to move along the track; the robot comprises an openable and closable clamping member, and the clamping member is configured to receive and transport the rivets released from the feed trough.

[0057] In some embodiments, the manipulator comprises:

[0058] A support member, one end of which is slidably disposed in the track; and

[0059] The clamping member is rotatably connected to the other end of the supporting member; the clamping member has an inner groove for receiving the rivet.

[0060] In some embodiments, the feed troughs are constructed to include arc segments, the top ends of the feed troughs are separated, and the bottom ends of the feed troughs are connected.

[0061] In some embodiments, the fuselage body further comprises:

[0062] A first driving member is connected to the floating center needle adjustment platform to drive the floating center needle adjustment platform to rotate, and the support arm is automatically rotated to the position where riveting is required to achieve locking and positioning through the production process control execution system; and / or

[0063] The second driving member is connected to the adjusting member to drive the floating center needle to adjust the riveting length of the rivet for riveting. The floating center needle of the support arm is controlled by the production process control execution system to automatically fine-tune the height of the floating center needle according to the required riveting length.

[0064] In some embodiments, the first drive member and / or the second drive member comprises a servo motor.

[0065] In some embodiments, a support platform is provided at the bottom of the side surface of the mounting seat, and the outer edge width of the support platform is adapted to the outer edge width of the circumference outside the bottom adjustment piece of the support arm.

[0066] Some other embodiments of the present invention provide a method for manufacturing a riveted part, which is implemented by using a riveting machine provided by any technical solution of the present invention, and the manufacturing method includes the following steps:

[0067] In the production process control execution system, define in advance the rivet specifications required for the workpieces to be riveted, define the rivet stations, define the riveting sequence of rivets of different specifications, and define the number of riveted workpieces to be produced;

[0068] The production process control execution system is connected to the defined rivet station and production control board by communication; the production order is scanned at the rivet station according to the received production instruction, and the board at the station site displays the rivet specifications required by the production order and the corresponding supply slot number, as well as the number of the support arm corresponding to the rivets of each specification;

[0069] On the premise that the production process control execution system is connected to the riveting machine of the corresponding workstation, after all rivets are loaded and the corresponding support arm is confirmed according to the prompt on the kanban, the workstation start button of the production process control execution system is turned on, and the production process control execution system automatically adjusts the correct support arm to the riveting operation position according to the set riveting sequence;

[0070] The support arm to be riveted is stopped on the mounting seat and restricted in position. At this time, the delay relay switch meets the delay condition and turns on the first electromagnet to release the rivet of corresponding specifications into the impact head. At this time, after placing the riveted workpiece, the riveting foot switch is stepped on to drive the riveting machine impact head to perform riveting operations on the rivet in the preparatory state of the impact head.

[0071] In some embodiments, the method for manufacturing a rivet further comprises the following steps:

[0072] A repeat operation button is arranged on the main body of the rivet machine, which is normally in a closed state and is electrically connected to the contact switch, the delay relay switch, the first electromagnet and the power supply driving the first electromagnet; when the operator checks the riveting quality after completing a riveting operation and finds that the riveting quality does not meet the requirements, the support arm is still stopped at the riveting position, and the repeat operation button is pressed and released, so that the first electromagnet is powered off and powered on once, and a rivet of the same specification is released to fall into the impact head; the rivet pedal can be operated to allow the rivet of the impact head to complete the repeated operation of the rivet of the same specification;

[0073] If the rotation of the adjustment table and the adjustment of the rivet specifications of the support arm are controlled by the production process control execution system, after the operator presses the repeat operation button, the production process control execution system controls and drives the support arm to realign and prepare the rivets of the specifications required for the last riveting to fall into the impact head.

[0074] In some embodiments, the specifications and production process sequence of the rivets and the production data control are stored in a production process control execution system.

[0075] The floating center needle adjustment table provided by the above technical solution has multiple support arms, each support arm is individually equipped with a floating center needle, and the model of each floating center needle can be set as needed. For different models of rivets, corresponding models of floating center needles can be set. When it is necessary to rivet rivets of different models, the support arm where the floating center needle corresponding to the rivet model is located is rotated to the riveting position, and then the riveting operation can be performed normally. The above technical solution realizes the continuous riveting operation of multiple models of rivets. The only riveting operation station can rivet multiple rivets of different specifications in sequence, and there is no requirement for the surface morphology of the riveted workpiece, and there is no need to replace the riveting machine or move the rivets across regions. Furthermore, the riveting machine using the floating center needle adjustment table provided by the above technical solution is suitable for the riveting operation of rivets of various different riveting lengths, and there is no requirement for the morphology of the riveted workpiece. Using a riveting machine, the riveting operation of rivets of multiple specifications can be realized by rotating the floating center needle adjustment table, avoiding a riveting component from moving multiple times between multiple riveting processes during the production process, which is particularly suitable for small batch unit production mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0077] Figure 1a A schematic diagram of the three-dimensional structure of a riveting machine provided in some embodiments of the present invention;

[0078] Figure 1b A schematic diagram of the main structure of a riveting machine provided in some embodiments of the present invention;

[0079] Figure 1c A right side structural schematic diagram of a riveting machine provided in some embodiments of the present invention;

[0080] Figure 1d A left-side structural schematic diagram of a riveting machine provided in some embodiments of the present invention;

[0081] Figure 1e A schematic diagram of the rear view structure of a riveting machine provided in some embodiments of the present invention;

[0082] Figure 1f A schematic diagram of a top view of a riveting machine provided in some other embodiments of the present invention;

[0083] Figure 2 for Figure 1a Schematic diagram of the three-dimensional structure of the floating center needle adjustment platform;

[0084] Figure 3 for Figure 1a Schematic diagram of the exploded structure of the floating center needle adjustment platform;

[0085] Figure 4 for Figure 1a The structural diagram of the foot pedal of the riveting machine;

[0086] Figure 5 for Figure 1a A schematic diagram of the main structure of the feeding trough in FIG.

[0087] Figure 6 for Figure 1a A rear view structural diagram of the feeding trough in FIG.

[0088] Figure 7a A schematic diagram of the exploded structure of a floating center needle adjustment platform of a riveting machine provided by some other embodiments of the present invention;

[0089] Figure 7b A schematic diagram of the three-dimensional structure of a floating center needle adjustment platform of a riveting machine provided by some other embodiments of the present invention;

[0090] Figure 7c A schematic diagram of the main structure of a floating center needle adjustment platform of a rivet machine provided by some other embodiments of the present invention;

[0091] Figure 7d A schematic diagram of a top view of the floating center needle adjustment platform of a rivet machine provided in some embodiments of the present invention;

[0092] Figure 7eA schematic cross-sectional view of a floating center needle adjustment platform MM of a rivet machine provided by some other embodiments of the present invention;

[0093] Figure 8a A schematic diagram of a three-dimensional structure of a riveting machine provided in some other embodiments of the present invention;

[0094] Figure 8b A schematic diagram of the main structure of a riveting machine provided by other embodiments of the present invention;

[0095] Figure 8c A right side structural schematic diagram of a riveting machine provided in some other embodiments of the present invention;

[0096] Figure 8d A left-side structural schematic diagram of a riveting machine provided in some other embodiments of the present invention;

[0097] Figure 8e A schematic diagram of the rear view structure of a riveting machine provided in other embodiments of the present invention;

[0098] Figure 8f A schematic diagram of a top view of a riveting machine provided in some other embodiments of the present invention;

[0099] Fig. 9 for Figure 8a Schematic diagram of the three-dimensional structure of the floating center needle adjustment platform;

[0100] Fig.10 for Figure 8a Schematic diagram of the exploded structure of the floating center needle adjustment platform;

[0101] Fig.11 for Figure 8a The main structural diagram of the middle feeding trough;

[0102] Fig.12 for Figure 8a Schematic diagram of the rear view structure at the feed chute in. DETAILED DESCRIPTION

[0103] Combine the following Figure 1a to Figure 12 The technical solution provided by the present invention is described in more detail.

[0104] In view of the deficiencies in the related art, an embodiment of the present invention provides a riveting machine, which is a product that complies with the flexible manufacturing technology, meets the needs of continuous product updates, and is also suitable for the production automation of multiple varieties and small batches.

[0105] See also Figure 1a to Figure 6 Some embodiments of the present invention provide a riveting machine, including a body 2 and a floating center needle adjustment platform 1. The body 2 includes a mounting seat 21. The floating center needle adjustment platform 1 is rotatably mounted on the mounting seat 21.

[0106] The riveting machine includes a body 2, a power motor, a cam lever impact mechanism, a blanking mechanism, a floating center needle adjustment platform 1 and a foot clutch. The working process of the riveting machine is as follows: start the power supply, the power motor rotates, and the turntable of the blanking mechanism is driven to rotate by the belt; during the rotation of the turntable, the riveting machine is arranged to the blanking port according to the travel direction of the riveting process and fills the feed trough 3, and a rivet release switch 4 is set on the feed trough 3 to limit the rivet 8 to a preset position normally. The foot clutch is specially designed for whether the power motor rotation drives or disengages the cam lever impact mechanism. When the cam lever impact mechanism needs to start an up and down impact action, the clutch pedal is stepped on to rotate the cam lever impact mechanism for one circle. During the rotation process, the tension spring that limits the cam lever impact mechanism is stretched. After the cam passes the highest point, the tension spring elastic force is released to realize that the impact head of the cam lever impact mechanism hammers along the preset path to impact the relative floating center needle 12. When the foot-operated clutch triggers the action of the cam lever impact mechanism, the rivet release switch 4 on the rivet slide is pulled synchronously by the mechanical device to release a rivet 8 to fall to the impact position of the impact head of the cam lever impact mechanism. Before the above riveting, the model of the rivet 8 is used to select which support arm 111 of the floating center needle adjustment platform 1 of the riveting machine and which feed trough 3 of the riveting machine blanking mechanism is in working state. During the riveting process, when the model of the rivet 8 needs to be changed, it is also possible to adjust in real time which support arm 111 of the floating center needle adjustment platform 1 and which feed trough 3 of the blanking mechanism is working. The following text will introduce in detail how to achieve the above functions.

[0107] See Figure 1 and Figure 2 In some embodiments, the blanking mechanism includes a feed trough 3, which is used to provide rivets 8 to the floating needle adjustment platform 1.

[0108] There are multiple feed troughs 3 and support arms 111 of the floating needle adjustment platform 1 described later, and they correspond one to one. The feed trough 3 provides rivets 8 to the support arms 111. Each feed trough 3 corresponds to a support arm 111, that is, the rivets 8 in a feed trough 3 are provided to one of the support arms 111 in a direction. Before production, the feed troughs 3 and support arms 111 corresponding to each type of rivet are determined through pre-stored information. When the type of rivet 8 to be riveted is determined, the support arms 111 and feed troughs 3 required for work are determined. Multiple feed troughs 3 are prepared in a dispersed manner, and rivets of different specifications are controlled in a set order so that only one specification of rivet 8 enters the set unique riveting operation station in the same time period.

[0109] Furthermore, since one set of support arms 111 is in the riveting position, the other support arms 111 are distributed at a farther position, and the two sets of floating center needles 12 have precise stop positions, sufficient space, and waiting idle time, and a device for automatically adding gaskets can be set. The specific adding method is, for example, adding by vacuum adsorption pipeline and adding by manipulator 7. The control frequency of adding is to achieve one-time adding through the proximity switch when the floating center needle 12 rotates into place.

[0110] Furthermore, the riveting machine also includes a visual recognition system, which is used to determine whether gaskets are added and whether the specifications and quantity of the added gaskets meet the requirements.

[0111] In order to facilitate the identification of the correspondence between the feed trough 3 and each support arm 111 of the floating center needle adjustment platform 1, the feed trough 3 and each support arm 111 can be numbered respectively; or the feed trough 3 and each support arm 111 can be set with different colors, shapes, or other visually visible differences to establish the correspondence between the feed trough 3 of different rivet specifications and the support arm 111 of the floating center needle adjustment platform 1. During each operation, the rivets 8 of each operation are loaded into the correspondingly marked feed trough 3, which makes it easy for the operator to simply identify the correspondence between the support arm 111 and the feed trough 3. Furthermore, in order to facilitate the storage of rivets 8, each feed trough 3 is correspondingly provided with a hopper 9, and a large number of rivets 8 are stored in the hopper 9.

[0112] The feed trough 3 has a variety of structural forms. One way is to set a feed trough 3 of a suitable shape so that the rivets in each feed trough 3 are finally provided to the riveting position of the fuselage body 2. The fuselage body 2 has only one riveting position. Another way is to set a manipulator 7 to carry the rivets so that the rivets in each feed trough 3 are finally output to the riveting position of the fuselage body 2 through a unified outlet. The following text will introduce these two implementation methods in detail in embodiments. In addition, if the structure of the feed trough 3 does not contradict the structure of other structures (such as the floating center needle adjustment table 1), they can be combined arbitrarily.

[0113] See also Figure 2 and Figure 3 The feed trough 3 is constructed to include an arc segment 3a, the top ends of each feed trough 3 are separated, and the bottom ends of each feed trough 3 are connected. Figure 2 , the starting section of each feed trough 3 can be set as a vertical straight section 3b, and the straight section 3b is located upstream of the arc section 3a, so that the rivet 8 can completely slide down in the straight section 3b under the action of gravity, and the sliding speed is faster, and then the rivet 8 enters the arc section 3a at a faster sliding speed, and the sliding speed in the arc section 3a will also be faster. Such a setting can better meet the needs of continuous production. The above technical solution realizes that the rivet 8 falls along the feed trough 3 to the floating center needle 12 under the action of its own gravity.

[0114] Regardless of whether the feed trough 3 adopts the implementation method described above or the implementation method described below, the rivet release control part in each feed trough 3 can adopt the implementation method described below: In some embodiments, each feed trough 3 is equipped with a rivet release switch 4 and a rivet release control device 5, and the rivet release control device 5 is controlled and connected to the rivet release switch 4 so that the rivet release switch 4 switches between the following two positions: leaving the feed trough 3 and blocking the feed trough 3. Figure 2 and Fig.11 Each enlarged view shows the situation of blocking the feed trough 3. Fig.11 The enlarged view also shows a situation where a rivet 8 is released. The rivet release control device 5 can be implemented in a variety of ways. The operation of the rivet release switch 4 can be controlled mechanically, or the operation of the rivet release switch 4 can be controlled electrically, or the operation of the rivet release switch 4 can be controlled by a combination of electrical and mechanical means.

[0115] See also Figure 2 The rivet release switch 4 includes an upper head 41 and a lower head 42. The upper head 41 has a first inclined surface 41a; the lower head 42 has a second inclined surface 42a, and the first inclined surface 41a and the second inclined surface 42a are opposite to each other and there is a gap between them that can only accommodate one rivet 8.

[0116] When the rivet release switch 4 is in a normally closed state, the rivet 8 located between the first inclined surface 41 a and the second inclined surface 42 a cannot slide down into the impact head.

[0117] When the rivet release control device 5 drives the rivet release switch 4 to switch from the normally closed state to the open state: the upper head 41 and the lower head 42 of the rivet release switch 4 move synchronously, and the rivet 8 located between the first inclined surface 41a and the second inclined surface 42a leaves the control of the lower head 42 and slides along the feed trough 3 to the impact head, and at the same time, the upper head 41 crosses the feed trough 3 to squeeze the queued rivets 8' out of the upper head 41. When the rivet release switch 4 switches from the normally closed state to the open state in one action, only one rivet 8 falls into the feed trough 3.

[0118] When the rivet release control device 5 drives the rivet release switch 4 to switch from the open state to the normally closed state, the upper head 41 releases the restriction on the rivet 8' located above the upper head 41, and at the same time the lower head 42 returns to block the feed trough 3, so that the rivet 8' enters between the upper head 41 and the lower head 42 of the rivet release switch 4 located in the normally closed state, and waits for the next time the rivet release switch 4 is turned on, and the rivet 8' is released.

[0119] See also Figure 4 and Figure 5In some embodiments, the rivet release control device 5 includes a first marble assembly 51, a contact switch 52, a time delay relay switch (not shown) and a first electromagnet 53. Each support arm 111 is equipped with a first marble assembly 51. The top surface of the mounting seat 21 is provided with a groove 211, the number of the grooves 211 corresponds to the support arm 111, and a contact switch 52 is installed in each groove 211. Optionally, the contact switches 52 are arranged in a straight line on a structural plate, and the structural plate is installed in the groove on the top surface of the mounting seat 21. The support arm marble assembly is arranged in an arc shape, and the contact switches 52 arranged in a straight line are respectively corresponding when rotating. The time delay relay switch is installed on the main body of the rivet fuselage, and is respectively connected to multiple contact switches 52, and is set to delay 5 seconds (the set time length is adjustable) after receiving the power-on signal to connect the connection circuit. The first electromagnet 53 is directly connected to the upper head 41 and the lower head 42 of the rivet release switch 4. The plurality of first electromagnets 53 are respectively connected to the time delay relay switches.

[0120] Among them, the delay relay switch is electrically connected to the power supply that drives the first electromagnet 53 to operate. When the support arm marble assembly of a group of support arms 111 rotates to align with the contact switch 52, the delay relay switch is energized. If the support arm 111 continues to stop for more than 5 seconds (the set time length is adjustable), it means that the operator intends to use this support arm 111 for riveting operations, and the continuous power-on time exceeds the delay length of the delay relay, then the first electromagnet 53 is turned on, and the corresponding first electromagnet 53 drives the corresponding rivet release switch 4 of the group to switch from normally closed to open state, and a rivet 8 located in the feed trough 3 corresponding to the rivet release switch 4 is released and slides into the impact head. The operator further steps on the riveting pedal to press the rivet 8 that has slipped into the impact head toward the end of the floating center needle to perform the blooming riveting operation.

[0121] When the support arm 111 to be worked is rotated to the riveting position, the first marble assembly 51 on the support arm 111 presses the corresponding contact switch 52 once, and the corresponding hopper rivet switch releases a prepared rivet 8 into the impact head. On the same riveting machine, rivets 8 of different specifications can be riveted on the same riveting machine according to the set order.

[0122] Some implementations of the floating center needle adjustment platform 1 are introduced below.

[0123] See also Figure 4 and Figure 5The floating center needle adjustment platform 1 includes a support body 11 and a floating center needle 12. The support body 11 includes a connecting member 110 and at least two support arms 111. One end of each support arm 111 is fixedly mounted on the connecting member 110, and the other end of each support arm 111 is arranged at intervals. Each support arm 111 is provided with a mounting hole 111c. A floating center needle 12 is installed in each mounting hole 111c. The connecting member 110 and each support arm 111 are integrally formed or fixedly connected. The connecting member 110 has an outwardly protruding convex portion, and each of the outwardly protruding portions is arranged with a support arm 111.

[0124] The floating center needle 12 has three functions: 1. As a positioning device for hanging workpieces; 2. To guide the rivet 8 to pass through the riveting hole smoothly; 3. To promote the opening of the rivet head for riveting. The riveting process of the rivet 8 is as follows: when the floating center needle 12 is compressed back to the bottom end by the impact head, the head of the floating center needle 12 is slightly higher than the arc-shaped head of the hollow rod. The opening head of the rivet 8 is partially hollow. When the opening head presses against the floating center needle 12 to the end, the bottom of the floating center needle 12 presses against the hollow port of the rivet 8, and the hollow port continues to press against the arc-shaped head of the hollow rod. In this way, the combined pressure on the hollow head of the rivet 8 causes the rivet 8 to have an external circular flange at the set length position to block the orifice of the floating center needle 12 for hanging the workpiece, and finally realizes that all the workpieces passing through the floating center needle 12 are riveted together according to the preset length of the impact head and the distance between the floating center needle 12 wrapped rod head. The distance between the floating center needle 12 and the impact head of the wheel lever impact mechanism is the distance between the rivet 8 and the workpiece.

[0125] The model of each floating center needle 12 can be the same or different to meet the riveting requirements of various models of rivets 8. The size of the mounting hole 111c matches the model of the floating center needle 12. If the size of the floating center needle 12 is large, the size of the mounting hole 111c will be relatively large; otherwise it will be small. During operation, one of the multiple support arms 111 is in working condition, and the other support arms 111 are not working. The support arm 111 that needs to work is determined according to the model of the rivet 8 to be riveted. The support arm 111 in working condition is fixed together with the mounting base 21 of the fuselage main body 2 of the riveting machine described later, so that the support arm 111 is directly below the riveting head of the fuselage main body 2.

[0126] After the floating center needle adjustment platform 1 provided by the above technical solution is installed on the mounting base 21 of the riveting machine, the floating center needle adjustment platform 1 rotates around the center point C of the support arm 111. Each time the floating center needle adjustment platform 1 is rotated, only one floating center needle adjustment platform 1 can be rotated to enter the set only riveting operation station for positioning.

[0127] See also Figure 4 and Figure 5In some embodiments, the number of the support arms 111 is three, and one end of each support arm 111 is fixedly connected to the connecting member 10 .

[0128] In some embodiments, the three support arms 111 are arranged at intervals of 120°. This arrangement allows the distance between two adjacent support arms 111 to be far enough to prevent the support arms 111 from affecting or interfering with each other. Furthermore, the three support arms 111 have the same size, which makes the structure of the floating center needle adjustment platform 1 more compact and reasonable.

[0129] The following describes how to achieve locking of the mounting base 21 and the support arm 111 in the working state. Figure 4 and Figure 5 In some embodiments, the fuselage body 2 further includes a locking device 22. The locking device 22 is configured to lock the support arm 111 and the mounting seat 21 in the riveted position; wherein the so-called riveted position refers to a state where the support arm 111 is rotated to make any one group of the first marble assembly 51 and the contact switch 52 abut against each other. The locking device 22 is locked by, for example, snapping, adsorption, etc. The locking device 22 is provided so that the position of the support arm 111 in the working position is accurately fixed, which not only increases the reliability of the riveting operation, but also increases the success rate of the riveting operation.

[0130] See also Figures 7a to 7e, the locking device 22 has other implementations. In some embodiments, the locking device 22 includes an elastic clamping assembly 224 and a second mounting groove 225. The mounting seat 21 is provided with a first mounting groove 212 that penetrates therethrough, and the elastic clamping assembly 224 is compressed and installed in the first mounting groove 212. The second mounting groove 225 is provided at the bottom of the support arm 111, and the positions of the first mounting groove 212 and the second mounting groove 225 correspond to each other, so that after the support arm 111 rotates into place, the elastic clamping assembly 224 restores its deformation and is clamped in the second mounting groove 225. The first mounting groove 212 includes two sections: a first section hole and a second section hole, both of which penetrate each other. The elastic clamping assembly 224 includes a spring 224a, a positioning pin 224b and a push rod 224c. The positioning pin 224b is located in the first section hole and can extend out of the first section hole. The rod portion of the push rod 224c is located in the first section hole and the second section hole, and the head of the push rod 224c is located outside the second section hole. Moreover, the head size of the push rod 224c is larger than the size of the second section hole, so that the head of the push rod 224c will never extend into the second section hole. The head of the push rod 224c plays a positioning role. The positioning pins 224b are arranged on the mounting seat 21 in a group of left-right symmetric positions. The symmetrical positioning pins 224b protrude toward the floating center needle adjustment platform 1, and the openings are gradually enlarged so as to correct the deviation and position the floating center needle adjustment platform 1 that is rotating and stopping. The mounting seat 21 is provided with a through hole, and a spring 224a is provided to allow the left-right symmetric positioning pins 224b to normally protrude from the surface of the mounting seat 21, and the positioning pins 224b are connected as a whole at one end extending out of the mounting seat 21. A turning point is set between the unlocking foot switch 10 and the main body of the rivet fuselage, and a bent connecting rod is set in the middle of the unlocking foot switch 10 to connect the bottom of the left-right symmetric positioning pins 224b. The operator can step on the unlocking foot switch 10 to retract the left-right symmetrical positioning pins 224b into the mounting seat 21, allowing the floating center needle adjustment platform 1 to pass through the mounting seat 21 without obstruction; when the operator determines that it is necessary to stop the riveting operation of one of the support arms 111, release the unlocking foot switch 10, and the left-right symmetrical positioning pins 224b are pushed out of the mounting seat 21 by the spring 224a to limit the positioning of the floating center needle adjustment platform 1.

[0131] It can be seen that in the unlocked state, an external force (such as stepping on the unlocking foot switch 10, the unlocking foot switch 10 drives the corresponding components to move through a wire rope or a hard rod, and the use of a hard rod makes the subsequent movement more stable) is used to pull down the push rod 224c, and the positioning pin 224b is driven downward and retracted into the first section hole. At this time, the spring 224a is compressed. When locking is required, the push rod 224c is released, and under the elastic force of the spring 224a, the positioning pin 224b moves upward until it is inserted into the second installation slot 225 to achieve locking.

[0132] In some embodiments, a support platform 21a is provided at the outermost side of the mounting seat 21, and the outer edge width of the support platform 21a is equivalent to the outer edge width of the circle outside the adjusting screw head at the bottom of the support arm 111. The purpose of providing the support platform 21a is that when the floating center needle 12 set on the support arm 111 is subjected to impact riveting operation, it can well resist the impact vibration of the support arm 111 connected to the floating center needle adjustment platform 1 when it is suspended in the air, which can increase the stability of the riveting operation and ensure the quality of the riveting process.

[0133] See also Figures 8a to 12 , other implementation methods of the riveting machine are introduced below.

[0134] See also Fig. 9 and Fig.10 In some embodiments, the structure of the floating center needle adjustment platform 1 of the riveting machine is different from the structure described above. The number of the supporting arms 111 of the floating center needle adjustment platform 1 is more than four, some of which are fixed arms 111a, and the rest are movable arms 111b; one end of each fixed arm 111a is fixedly connected, and one end of the movable arm 111b is rotatably connected to one end of the fixed arm 111a.

[0135] In some embodiments, a movable arm 111b is provided between two adjacent fixed arms 111a. When the floating center needle 12 on the movable arm 111b is needed, the floating center needle 12 is rotated to the middle of the two fixed arms 111a, and then the movable arm 111b is fixed so that the movable arm 111b can no longer rotate freely, and then the entire floating center needle adjustment platform 1 is rotated so that the movable arm 111b is fixed together with the mounting seat 21. Subsequently, a riveting operation is performed.

[0136] In some embodiments, the floating center needle adjustment platform 1 further includes an adjustment member 13, and the number of the adjustment members 13 is the same as the number of the support arms 111, or at least one support arm 111 is provided with an adjustment member 13 installed below it. The adjustment member 13 is installed at the bottom of the mounting hole 111c and abuts against the floating center needle 12; the adjustment member 13 is configured to adjust the installation position of the floating center needle 12 in the mounting hole 111c. The adjustment member 13 adjusts the installation depth of the floating center needle 12, and thereby adjusts the length of the floating center needle 12 extending out of the mounting hole 111c.

[0137] In some embodiments, the adjusting member 13 includes a screw rod. The bottom of the mounting hole 111c is provided with a thread, and the screw rod is threadedly connected to the mounting hole 111c. By screwing the screw rod, the installation position of the floating center needle 12 along the axial direction of the mounting seat 21 can be adjusted.

[0138] In the various embodiments of the floating center needle adjustment platform 1 described above, see Figure 4 and Figure 5 ,or Fig. 9 and Fig.10, the floating center needle adjustment platform 1 also includes a rotating member 14, and the rotating member 14 is constructed to be rotatably connected to the mounting seat 21 of the riveting machine. There are many ways to connect the rotating member 14. The first is: the rotating member 14 is fixed to the middle position of the connecting member 110 and is constructed to be rotatably connected to the mounting seat 21 of the riveting machine. The second is: the rotating member 14 is rotatably installed in the middle position of the connecting member 110 and is constructed to be fixedly connected to the mounting seat 21 of the riveting machine. The floating center needle adjustment platform 1 can be rotated manually or by setting the first driving member 23 described later, so that the floating center needle adjustment platform 1 rotates relative to the mounting seat 21 of the fuselage main body 2 of the riveting machine. During the rotation process of the floating center needle adjustment platform 1, different support arms 111 will successively form a locking fit with the mounting seat 21. In the actual riveting process, after the floating center needle adjustment platform 1 is rotated to the required support arm 111 and reaches the required position, the support arm 111 is fixedly connected with the mounting seat 21. After the fixed connection, the position of the support arm 111 is fixed, so that the position of the floating center needle 12 is also fixed, and the subsequent riveting operation can be conveniently performed. The following article will introduce how to achieve the fixation of the support arm 111 and the mounting seat 21.

[0139] See also Fig. 9 and Fig.10 In some embodiments, the body 2 further includes a first driving member 23, which is drivingly connected to the floating center needle adjustment platform 1 to drive the floating center needle adjustment platform 1 to rotate. The first driving member 23 is used to achieve precise rotation of the floating center needle adjustment platform 1.

[0140] In some embodiments, the first driving member 23 includes a servo motor.

[0141] See also Fig. 9 and Fig.10 In some embodiments, the fuselage body 2 further includes a second driving member 24. The second driving member 24 is drivingly connected to the adjusting member 13 to drive the floating center needle 12 to adjust the riveting length of the rivet for riveting, and the floating center needle 12 of the support arm 111 is controlled by the production process control execution system to automatically fine-tune the height of the floating center needle 12 according to the required riveting length.

[0142] See also Fig.11 and Fig.12, some other implementations of the feed trough 3 are introduced below. In some embodiments, the feed trough 3 is a straight trough, and the feed troughs 3 are not directly connected. The rivet specifications in at least two feed troughs 3 are different. One of the feed troughs 3 is the main feed trough 3a, and the other is the auxiliary feed trough 3b. The rivets 8 in the auxiliary feed trough 3b need to be gathered in the main feed trough 3a and transported to the riveting station via the main feed trough 3a. The movement of the rivets between the auxiliary feed trough 3b and the main feed trough 3a is achieved by the manipulator 7. Both the auxiliary feed trough 3b and the main feed trough 3a are provided with a notch 30, and the rivet 8 is driven by the manipulator 7 via the notch 30 and moves between the feed troughs. Specifically, the riveting machine also includes a track 6 and a manipulator 7. The track 6 is fixedly connected to each feed trough 3. The manipulator 7 is installed on the track 6, and the manipulator 7 is configured to move along the track 6; the manipulator 7 is configured to receive and transport the rivets 8 released by the feed trough 3. The manipulator 7 includes a support member 71 and a clamping member 72 rotatably connected to the support member 71 . The clamping member 72 is provided with an inner groove 721 , and the inner groove 721 receives the rivet 8 .

[0143] The following describes how to achieve locking of the mounting base 21 and the support arm 111 in the working state in this embodiment.

[0144] See also Fig. 9 and Fig.10 In some embodiments, the fuselage body 2 further includes a locking device 22. The locking device 22 is configured to lock the support arm 111 and the mounting seat 21 in the riveted position; wherein the riveted position refers to a state in which the support arm 111 is rotated to make any group of the first marble assembly 51 and the contact switch 52 abut against each other. The locking device 22 is locked by, for example, snapping, adsorption, etc. The locking device 22 is provided so that the position of the support arm 111 in the working position is accurately fixed, which not only increases the reliability of the riveting operation, but also increases the success rate of the riveting operation.

[0145] In some embodiments, the locking device 22 includes a positioning pin 221, a positioning hole 222, and a positioning pin driving device 223. The positioning pin 221 is telescopically mounted on the support seat. Each support arm 111 is provided with a positioning hole 222, and each positioning hole 222 is equidistant from the rotation center axis of the support arm 111. The positioning pin driving device 223 is drivingly connected to the positioning pin 221 to drive the extension and retraction of the positioning pin 221. The positioning pin driving device 223 is, for example, a linear motor.

[0146] In some embodiments, the positioning pin driving device 223 includes a second electromagnet and an unlocking foot switch 10. The second electromagnet is mounted on the mounting seat 21 and connected to the positioning pin 221; the second electromagnet is configured to drive the positioning pin 221 to protrude from the top surface of the mounting seat 21 when the second electromagnet is in a normal state. The unlocking foot switch 10 is mounted on the base of the fuselage body 2, and the foot switch 10 is configured to be stepped on by the operator using a foot pedal to achieve closure. Among them, the second electromagnet, the unlocking foot switch 10 and the power supply that drives the electromagnet to operate are all electrically connected; when the operator steps on the foot pedal to lock the unlocking foot switch 10 and turns on the power, the second electromagnet drives the positioning pin 221 to retract the mounting seat 21.

[0147] In some embodiments, the riveting machine is provided with a reset switch. When a rivet is judged to be poorly riveted after riveting, pressing the re-operation button once can allow the stepper motor to re-drive the corresponding floating center needle adjustment platform 1 in place according to the set sequence to perform blanking and riveting operations, which can greatly improve the qualified rate of riveting.

[0148] In some embodiments, when the floating center needle adjustment platform 1 is moved manually, the riveting machine is provided with a repeated riveting mechanism to meet the need to continuously operate rivets of the same specification on the same floating center needle adjustment platform 1 .

[0149] Some other embodiments of the present invention provide a method for manufacturing a riveted part, which is implemented by using a riveting machine provided by any technical solution of the present invention, and intelligent control is achieved by building a production process control execution system. The method for manufacturing a riveted part includes the following steps:

[0150] First, the rivet specifications required for the workpieces to be riveted are defined and stored in advance in the production process control execution system, the rivet stations are defined, the riveting sequence of rivets of different specifications is defined, and the number of riveted workpieces to be produced is defined.

[0151] Secondly, the production process control execution system communicates and connects the defined rivet station and production control board; the production order is scanned at the riveting station according to the received production instructions, and the board at the station site displays the rivet specifications required by the production order and the corresponding supply slot numbers, as well as the numbers of the support arms 111 corresponding to the rivets 8 of each specification.

[0152] Again, under the premise that the production process control execution system is online with the riveting machine of the corresponding workstation, after all rivets are loaded and the corresponding support arm 111 is confirmed according to the prompts on the kanban board, the workstation start button of the production process control execution system is turned on. The production process control execution system automatically adjusts the support arm 111 of the correct model to the riveting operation position according to the set riveting sequence.

[0153] Next, the support arm 111 to be riveted is stopped on the mounting seat 21 and restricted in position. At this time, the delay relay switch meets the delay condition and turns on the first electromagnet to release the rivet of the corresponding specification into the impact head. At this time, after the riveted workpiece is placed, the riveting foot switch 100 is stepped on to drive the riveting machine impact head to perform riveting operations on the rivets in the preparatory state of the impact head.

[0154] In some embodiments, the above method further comprises the following steps:

[0155] First, when the operator completes a riveting operation and checks the riveting quality, if it is found that the riveting quality does not meet the requirements, the operator presses a re-operation button; wherein a re-operation button is provided on the riveting machine.

[0156] Then, the production process control execution system controls and drives the support arm 111 to realign and prepare the blanking of the rivet specifications required for the last riveting.

[0157] In some embodiments, the rivet model database is stored in the manufacturing enterprise's production process control execution system (MES system).

[0158] The following introduces a specific application scenario.

[0159] First, build product models and material models in the MES system, and form a bill of material (Bill of Material) for a specific product by establishing associations.

[0160] Secondly, establish a process model in the MES system, determine the process route of the product, and set the stations (that is, set the stations that the product needs to pass through for scanning). Specifically, this can be achieved by assigning a fixed IP to the host computer through the MES system, obtaining the host computer's MAC address (also called physical address, hardware address) and associating it with the stations in the MES system. The MAC address is a flash memory chip burned into the network card by the equipment manufacturer during production. It is the unique network identifier of each device. Key Part management is performed on the site to form a process BOM. Key Part management refers to establishing an association between the input material code and the workstation at the workstation. Key part refers to key parts / materials, that is, parts / materials required for subsequent processing.

[0161] Again, in the physical space, associate the multi-station servo motor riveting machine with the system site, and associate the materials used with the hopper.

[0162] Finally, the MES system generates a unique serial number (SN) for a product. Each product has a unique identification number (serial number). This serial number is generated according to the work order (or work order, work order, production instruction) generated by the production plan.

[0163] It is understandable that the control programs of each component in the riveting machine also need to be set according to the requirements, forming a servo motor driver for the host computer to directly drive the PLC. The host computer and the MES system use API interface or message push to obtain the process BOM and process parameters of this site.

[0164] The actual application scenarios are:

[0165] The operator takes the product card or barcode (the product card or barcode contains the serial number) and swipes the card on the multi-station servo motor riveting machine. The riveting machine obtains the process information and process BOM of this product (or the MES system pushes this information to the riveting machine), and slides the corresponding rivet 8 to the impact head for riveting according to the process sequence requirements.

[0166] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" 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 invention and simplifying the description, rather than indicating or implying 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 a limitation on the protection content of the present invention.

[0167] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A riveting machine, characterized in that: It comprises a body (2) and a floating center needle adjustment platform, the body (2) comprising a mounting seat (21), and the floating center needle adjustment platform (1) is rotatably mounted on the mounting seat (21); Wherein, the floating center needle adjustment platform comprises: A support body (11) comprising a connecting member (110) and at least two supporting arms (111), one end of each of the supporting arms (111) being mounted and fixed to the connecting member (110), and the other end of each of the supporting arms (111) being arranged at intervals; each of the supporting arms (111) being provided with a mounting hole (111c); and A floating center needle (12), wherein each of the mounting holes (111c) is mounted with the floating center needle (12); Wherein, the riveting machine also includes: A material supply trough (3), the material supply trough (3) corresponding to the support arm (111) on a one-to-one basis, the material supply trough (3) being configured to supply rivets (8) to the support arm (111), and the specifications of the rivets (8) in at least two of the material supply troughs (3) being different; Each of the feed troughs (3) is equipped with a rivet release switch (4) and a rivet release control device (5); The rivet release control device (5) comprises: A first marble assembly (51), each of the support arms (111) being equipped with a first marble assembly (51); A contact switch (52), wherein the top surface of the mounting seat (21) is provided with grooves (211), the number of the grooves (211) corresponds one-to-one to the support arm (111), and a contact switch (52) is installed in each of the grooves (211); A time delay relay switch, mounted on the rivet body and connected to each of the contact switches (52); and A first electromagnet (53) is directly drivingly connected to the upper head (41) and the lower head (42) of the rivet release switch (4); The delay relay switch is electrically connected to a power source that drives the first electromagnet (53) to operate; when a support arm marble assembly of a group of the support arms (111) rotates to align with the contact switch (52), the delay relay switch is energized; if the support arm (111) continues to stop for more than a set time, it means that the support arm (111) is used for riveting operations, and the continuous power-on time exceeds the delay length of the delay relay, then the first electromagnet (53) is turned on, and the corresponding first electromagnet (53) drives the corresponding rivet release switch (4) of the group to switch from a normally closed state to an open state, and a rivet (8) located in the feed trough (3) corresponding to the rivet release switch (4) is released and slides into the impact head.

2. The riveting machine according to claim 1, characterized in that: The floating center needle adjustment table also includes: An adjusting member (13), the adjusting member (13) being installed at the bottom of at least one of the mounting holes (111c), the adjusting member (13) abutting against the floating center needle (12); the adjusting member (13) being configured to adjust the installation position of the floating center needle (12) in the mounting hole (111c).

3. The riveting machine according to claim 2, characterized in that: The adjusting member (13) comprises a screw.

4. The riveting machine according to claim 1, characterized in that: The floating center needle adjustment table also includes: A rotating member (14), wherein the rotating member (14) is fixed at a middle position of the connecting member (110) and is configured to be rotatably connected to a mounting seat (21) of a riveting machine; or, the rotating member (14) is rotatably mounted at a middle position of the connecting member (110) and is configured to be fixedly connected to a mounting seat (21) of a riveting machine.

5. The riveting machine according to claim 1, characterized in that: The number of the support arms (111) is three, and the edge of the connecting member (110) is provided with three external protrusions, each of which is fixedly connected to a corresponding support arm (111).

6. The riveting machine according to claim 5, characterized in that: The three support arms (111) are arranged at intervals of 120°.

7. The riveting machine according to claim 1, characterized in that: The number of the support arms (111) is more than four, a portion of which are fixed arms (111a) and the rest are movable arms (111b); one end of each of the fixed arms (111a) is fixedly connected, and one end of the movable arm (111b) is rotatably connected to one end of the fixed arm (111a).

8. The riveting machine according to claim 7, characterized in that: A movable arm (111b) is arranged between two adjacent fixed arms (111a).

9. The riveting machine according to claim 1, characterized in that: The rivet release control device (5) is controllably connected to the rivet release switch (4) so ​​that the rivet release switch (4) switches between the following two states: a normally closed state for blocking the rivet (8) from falling, and an open state for allowing the rivet (8) to fall.

10. The riveting machine according to claim 9, characterized in that: The rivet release switch (4) comprises: An upper head portion (41) having a first inclined surface (41a); and The lower head (42) has a second inclined surface (42a), the first inclined surface (41a) and the second inclined surface (42a) are opposite to each other and there is a gap therebetween that can accommodate only one rivet (8); Wherein, when the rivet release switch (4) is in a normally closed state, the rivet (8) located between the first inclined surface (41a) and the second inclined surface (42a) cannot slide into the impact head; When the rivet release control device (5) drives the rivet release switch (4) to switch from the normally closed state to the open state: the upper head (41) and the lower head (42) of the rivet release switch (4) move synchronously, and the rivet (8) located between the first inclined surface (41a) and the second inclined surface (42a) leaves the control of the lower head (42) and slides along the feed trough (3) toward the impact head, and at the same time, the upper head (41) crosses the feed trough (3) to squeeze the queued rivets (8) out of the upper head (41); When the rivet release control device (5) drives the rivet release switch (4) to switch from an open state to a normally closed state, the upper head (41) releases the restriction on the rivet (8) located above the upper head (41), and at the same time the lower head (42) returns to block the feed trough (3), so that the rivet (8) enters between the upper head (41) and the lower head (42) of the rivet release switch (4) located in the normally closed state.

11. The riveting machine according to claim 1, characterized in that: The fuselage body (2) also includes: The locking device (22) is configured to lock the support arm (111) and the mounting seat (21) in a riveted position; wherein the riveted position refers to a state in which the support arm (111) is rotated to such an extent that any one set of the first marble assembly (51) and the contact switch (52) abut against each other.

12. The riveting machine according to claim 11, characterized in that The locking device (22) comprises: A positioning pin (221) is telescopically mounted on the mounting seat (21); and A positioning hole (222), each of the support arms (111) is provided with the positioning hole (222), and each of the positioning holes (222) is equidistant from the rotation center axis of the support arm (111); and A positioning pin driving device (223) is drivingly connected to the positioning pin (221) to drive the positioning pin (221) to extend and retract.

13. The riveting machine according to claim 12, characterized in that: The positioning pin driving device (223) comprises: a second electromagnet, mounted on the mounting seat (21) and connected to the positioning pin (221); the second electromagnet is configured to drive the positioning pin (221) to protrude from the top surface of the mounting seat (21) when the second electromagnet is in a normal state; and An unlocking foot switch (10) is mounted on the base of the main body (2), and the foot switch (10) is configured so that an operator can step on it using a foot pedal to achieve closing; The second electromagnet, the unlocking foot switch (10) and a power source for driving the electromagnet are all electrically connected; when an operator steps on the foot pedal to lock the unlocking foot switch (10) and turns on the power source, the second electromagnet drives the positioning pin (221) to retract into the mounting seat (21).

14. The riveting machine according to any one of claims 11 to 13, characterized in that: The locking device (22) further comprises: A second marble assembly, mounted on an end surface of the mounting seat (21) facing the support arm (111); Wherein, a groove is provided on the surface of the support arm (111) facing the mounting seat (21), and the groove cooperates with the second marble assembly.

15. The riveting machine according to claim 11, characterized in that: The locking device (22) comprises: an elastic clamping assembly (224), wherein a first mounting groove (212) is provided on the top of the mounting seat (21), and the elastic clamping assembly (224) is compressed and mounted in the first mounting groove (212); and The second mounting groove (225) is arranged at the bottom of the support arm (111), and the first mounting groove (212) corresponds to the position of the second mounting groove (225), so that after the support arm (111) is rotated into place, the elastic clamping assembly (224) recovers its deformation and is clamped in the second mounting groove (225).

16. The riveting machine according to claim 15, characterized in that The first installation slot (212) comprises a first hole and a second hole extending therethrough, the elastic holding assembly (224) comprises a spring (224a), a positioning pin (224b) and a push rod (224c), the spring (224a) being pressed between the positioning pin (224b) and the push rod (224c); The positioning pin (224b) is located in the first hole section and is configured to be able to slide along the first hole section; the rod portion of the push rod (224c) is located in the first hole section and the second hole section, the head portion of the push rod (224c) is located outside the second hole section, and the size of the head portion of the push rod (224c) is larger than the size of the second hole section.

17. The riveting machine according to claim 1, characterized in that: Also includes: A track (6) fixedly connected to each of the feed troughs (3); as well as A robot (7) is mounted on the track (6), and the robot (7) is configured to move along the track (6); the robot (7) comprises an openable and closable clamping member, and the clamping member is configured to receive and transport the rivets released from the feed trough (3).

18. The riveting machine according to claim 17, characterized in that The manipulator (7) comprises: A support member (71), one end of which is slidably disposed in the track (6); and The clamping member (72) is rotatably connected to the other end of the support member (71); the clamping member (72) has an inner groove (721) for receiving the rivet (8).

19. The riveting machine according to claim 1, characterized in that: The feed trough (3) is constructed to include an arc segment, the top ends of the feed troughs (3) are separated, and the bottom ends of the feed troughs (3) are connected.

20. The riveting machine according to claim 1, characterized in that The fuselage body (2) also includes: A first driving member (23) is drivably connected to the floating center needle adjustment platform (1) to drive the floating center needle adjustment platform (1) to rotate, and controls the support arm (111) to automatically rotate to a position where riveting is required to achieve locking and positioning through a production process control execution system; and / or The second driving member (24) is connected to the adjusting member (13) to drive the floating center needle (12) to adjust the riveting length of the rivet (8) for matching riveting, and the floating center needle (12) of the support arm (111) is controlled by the production process control execution system to automatically fine-tune the height of the floating center needle (12) according to the required riveting length.

21. The riveting machine according to claim 20, characterized in that The first drive member (23) and / or the second drive member (24) comprises a servo motor.

22. The riveting machine according to claim 1, characterized in that A support platform (21a) is provided at the bottom of the side of the mounting seat (21), and the outer edge width of the support platform (21a) is adapted to the outer edge width of the circumference outside the bottom adjustment piece (13) of the support arm (111).

23. A method for manufacturing a riveted part, characterized in that: The manufacturing method is implemented by using the riveting machine described in any one of claims 1 to 22, and comprises the following steps: In the production process control execution system, the rivet specifications required for the workpieces to be riveted are defined in advance, the rivet stations are defined, the riveting sequence of rivets (8) of different specifications is defined, and the number of riveted workpieces to be produced is defined; The production process control execution system is connected to the defined rivet station and production control board through communication; the production order sheet is scanned at the rivet station according to the received production instruction, and the board at the station site displays the specifications of the rivets (8) required by the production order sheet and the corresponding supply slot numbers, as well as the numbers of the support arms (111) corresponding to the rivets (8) of various specifications; On the premise that the production process control execution system is connected to the riveting machine of the corresponding workstation, after all rivets (8) are loaded and the corresponding support arm (111) is confirmed according to the prompt on the kanban board, the workstation start button of the production process control execution system is turned on, and the production process control execution system automatically adjusts the correct support arm (111) to the riveting operation position according to the set riveting sequence; The support arm to be riveted is stopped on the mounting seat and restricted in position. At this time, the delay relay switch meets the delay condition and turns on the first electromagnet to release the rivet of corresponding specifications into the impact head. At this time, after placing the riveted workpiece, the riveting foot switch is stepped on to drive the riveting machine impact head to perform riveting operations on the rivet in the preparatory state of the impact head.

24. The method for manufacturing a riveted part according to claim 23, characterized in that: The following steps are also included: A repeat operation button is arranged on the main body of the rivet machine, which is normally in a closed state and is electrically connected to the contact switch, the delay relay switch, the first electromagnet and the power supply driving the first electromagnet; when the operator checks the riveting quality after completing a riveting operation and finds that the riveting quality does not meet the requirements, the support arm is still stopped at the riveting position, and the repeat operation button is pressed and released, so that the first electromagnet is powered off and powered on once, and a rivet of the same specification is released to fall into the impact head; the rivet pedal can be operated to allow the rivet of the impact head to complete the repeated operation of the rivet of the same specification; If the rotation of the adjustment table and the adjustment of the rivet specifications of the support arm are controlled by the production process control execution system, after the operator presses the repeat operation button, the production process control execution system controls and drives the support arm to realign and prepare the rivets of the specifications required for the last riveting to fall into the impact head.

25. The method for manufacturing a riveted part according to claim 23, characterized in that: The specifications and production process sequence of the rivets and production data control are stored in the production process control execution system.

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