Blind rivet screwing system

Abstract

The utility model belongs to the field of self-plugging rivet manufacturing, and discloses a self-plugging rivet screwing system, which comprises a primary screwing assembly, a secondary screwing assembly and a tertiary screwing assembly, and is used for screwing a rivet body, a pipe body pressed into a ring and a core rod into a prefabricated product III through tertiary screwing; the closing-in equipment comprises a first closing-in assembly and a second closing-in assembly, the first closing-in assembly moves in the circumferential direction of the third prefabricated product to conduct closing-in action on a pipe body of the third prefabricated product for multiple times so that the third prefabricated product can be made into a fourth prefabricated product, and the second closing-in assembly conducts closing-in on a nail body of the fourth prefabricated product so that the fourth prefabricated product can be made into a fifth prefabricated product. According to the utility model, one screwing process is carried out for three times, the efficiency of the screwing process can be improved on the basis of avoiding screwing clamping stagnation, and in addition, the pipe body is subjected to multiple closing actions to ensure that the pipe body is closed in place, and the problem that the locking capacity is reduced when a self-plugging rivet is used is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the core pull rivet manufacturing field especially relates to a core pull rivet screwing system. BACKGROUND

[0002] In the screwing process of the core pull rivet, it is usually completed by one-time screwing, the stroke length of the core rod is longer in the screwing procedure, so that the time required by the screwing procedure is longer, which causes other procedures to wait for a long time, and further affects the overall production efficiency, and the use of the method of increasing the screwing speed can shorten the time required by the screwing procedure, but the screwing speed may be stuck, which affects the processing quality and use performance of the rivet, and thus the yield is not high. Moreover, after the screwing is completed, the pipe body needs to be closed, and the current closing process may cause the pipe body to be not closed in place, so that the locking ability is reduced in the use of the core pull rivet. SUMMARY

[0003] In order to solve the above technical problems, the utility model discloses a kind of core pull rivet screwing systems, one-time screwing procedure is divided into three times, on the basis of avoiding screwing stuck, the efficiency of screwing procedure can be improved, in addition, the pipe body is closed in action multiple times, to ensure that the pipe body is closed in place, avoid the problem that locking ability is reduced when using core pull rivet.

[0004] The specific technical scheme of the utility model is as follows:

[0005] A kind of core pull rivet screwing system, comprising:

[0006] Pressing equipment is used to press the ring into the pipe body;

[0007] Screwing equipment includes one-time screwing component, secondary screwing component and tertiary screwing component, and is used to screw the rivet body, the pipe body with the pressed ring and the core rod into prefabricated product three by three times, in the prefabricated product three, the necking groove of the core rod is inserted into the rivet body, and the first end of the core rod abuts against the end of the pipe body;

[0008] Closing equipment includes closing component one and closing component two, the closing component one moves along the circumference of prefabricated product three to close the pipe body of prefabricated product three multiple times to make prefabricated product three into prefabricated product four, and the closing component two closes the rivet body of prefabricated product four to make prefabricated product four into prefabricated product five;And

[0009] Nut screwing-in equipment includes nut carrier and screwing mechanism four, the screwing mechanism four is used to clamp the first end of the core rod in prefabricated product five to drive the core rod to rotate around its axis, and the screwing mechanism four and the nut carrier move along the axis of prefabricated product five to screw prefabricated product five and the nut on the nut carrier into finished product, in which the nut and the cap end face of the rivet body abut.

[0010] In the prior art, the screwing of the core-pulling rivet is realized by one process. Since the screwing stroke of the core rod is long, the screwing efficiency is usually low. In order to improve the screwing efficiency, the screwing speed can only be increased, which increases the probability of jamming and reduces the yield. Therefore, in order to improve the manufacturing efficiency of the prefabricated product three, the screwing speed of the core rod and the prevention of jamming need to be considered. Therefore, the screwing process is divided into three stages. In each screwing stage, the screwing stroke can be reduced, the probability of jamming is greatly reduced, and further screwing acceleration can be obtained. Therefore, the screwing time of the three stages can be lower than the time required for one screwing, thereby ensuring the processing quality of the core-pulling rivet, significantly improving the processing quality and efficiency, and effectively improving the yield. For the closing device, since the closing assembly one moves along the circumference of the prefabricated product three, one closing action can be completed when rotating a predetermined angle. After rotating a plurality of predetermined angles, a plurality of closing actions can be performed. Therefore, the pipe body can be closed multiple times along the closing position of the pipe body, so that the pipe body is closed more fully.

[0011] Preferably, the closing assembly one comprises:

[0012] The tool one is used for cooperating with the first end of the core rod.

[0013] A plurality of pressing blocks one are arranged circumferentially along the tool one and used for pressing the pipe body to close.

[0014] The driving mechanism one is used for driving the pressing blocks to move radially along the tool one; and

[0015] The driving mechanism two is used for driving the pressing blocks to move circumferentially along the tool one.

[0016] The structure is simple. While the driving mechanism one drives the pressing blocks one to perform the closing action, the driving mechanism two can drive the pressing blocks one to rotate around the pipe body. Therefore, the pressing blocks one can perform the closing action at different positions of the pipe body, thereby ensuring the fullness of the closing.

[0017] Preferably, it further comprises:

[0018] The prefabricated product three conveying mechanism comprises a material positioning block and a misaligned carrier plate. The material positioning block is provided with a through hole. The misaligned carrier plate is provided with a placing part for cooperating with the pipe body. The misaligned carrier plate is actively switched between a receiving position and a feeding position.

[0019] When the misaligned carrier is located at the receiving position, the third preform enters the placing portion through the opening, and at least a part of the cap edge of the third preform is overlapped on the misaligned carrier to prevent the third preform from falling off; when the misaligned carrier is switched to the feeding position, the third preform is blocked by the fixed block in the placing portion to prevent the third preform from falling off from the opening of the placing portion, and moves with the misaligned carrier to the feeding position to be picked up by the receiving device.

[0020] When the third preform enters the placing portion of the misaligned carrier, the third preform can switch between the receiving position and the feeding position with the misaligned carrier. However, if the third preform is not limited, the third preform can fall off from the placing portion. Therefore, the cap edge of the nail body is overlapped on the placing portion, and the opening of the placing portion is blocked by the fixed block during the movement of the misaligned carrier, so that the third preform is limited in the radial and axial directions, thereby better meeting the transfer of the third preform.

[0021] Preferably, the nut carrier moves between the feeding position and the discharging position, the nut carrier is matched with the screwing mechanism four at the discharging position, the moving direction of the nut carrier is perpendicular to the axis of the fifth preform, and the nut carrier is provided with a discharging portion which is matched with the nut in shape.

[0022] The discharging portion is matched with the nut in shape, so that the nut can be stably transferred by the nut carrier, thereby meeting the cooperation with the screwing mechanism four.

[0023] Preferably, the nut carrier is provided with a limiting member one and a limiting member two on both sides of the nut carrier, the nut carrier moves between the limiting member one and the limiting member two and is in sliding contact with the limiting member one and the limiting member two, the limiting member one is provided with an inlet portion, and the limiting member two is provided with a discharging portion.

[0024] The inlet portion is matched with the discharging portion when the nut carrier is located at the feeding position, and the discharging portion is matched with the discharging portion when the nut carrier is located at the discharging position.

[0025] During the transfer of the nut by the nut carrier, the nut can fall off from the placing portion. Therefore, the limiting member one and the limiting member two are used to limit the nut in the axial direction during the transfer of the nut, that is, the nut is located between the limiting member one and the limiting member two during the transfer of the nut, so that the nut carrier has the nut matched with the fifth preform when the nut carrier cooperates with the screwing mechanism four.

[0026] Preferably, the pressing device comprises:

[0027] a tooling disc one which is uniformly provided with a plurality of tooling pins along the circumference thereof and can rotate about the axis thereof; and

[0028] The second tooling disc is coaxially arranged with the first tooling disc and has a plurality of action portions, at least a part of the action portions is provided with a clamping mechanism;

[0029] The tube loading mechanism, the ring loading mechanism and the pressing mechanism are arranged along the circumference of the first tooling disc.

[0030] At least one of the action portions is a tube loading action portion, one side of the action portion is provided with the tube loading mechanism, and the tube is clamped to the tooling pin by the clamping mechanism of the action portion.

[0031] At least one of the action portions is a ring loading action portion, one side of the action portion is provided with the ring loading mechanism, and the ring is clamped to the tooling pin by the clamping mechanism of the action portion and is located above the tube.

[0032] At least one of the action portions is a pressing action portion, the pressing mechanism is arranged on the action portion, and the pressing mechanism presses the ring into the tube.

[0033] In the present application, the first tooling disc can rotate around its own axis. Since a plurality of tooling pins are arranged on the first tooling disc, each tooling pin can be used to assemble the core-pulling rivet, that is, when a certain tooling pin is rotated to the corresponding action portion, the tube loading, ring loading and pressing can be realized on the first tooling disc, that is, through the rotation of the first tooling disc, the effective connection between independent processes is realized, so that the production requirements of reducing cost and improving efficiency are achieved through high integration.

[0034] Preferably, at least a part of the action portions is provided with a sliding mechanism, at least a part of the sliding mechanisms is connected with the clamping mechanism, and the pressing mechanism is arranged on one of the sliding mechanisms.

[0035] The pressing device further comprises:

[0036] The third tooling disc is coaxially arranged with the second tooling disc, a sliding groove and a sliding block structure are arranged between the third tooling disc and the sliding mechanism, and the third tooling disc rotates to make the sliding block in the sliding groove slide along the sliding groove.

[0037] The power source is provided with a cam one and a cam two.

[0038] The transmission shaft is connected with the second tooling disc and the third tooling disc.

[0039] The connecting rod mechanism is connected with the cam one at one end and is hinged with the transmission shaft at the other end, so as to drive the third tooling disc to rotate along its axis and reciprocate in the circumference by the power source; and

[0040] The swing arm mechanism is connected with the cam at one end and hinged with the transmission shaft at the other end to drive the tool disc three and the tool disc two to move axially along the axis thereof by the power source.

[0041] In the present application, the rotation of the tool disc three can be converted into linear motion of the sliding block structure, which is simple and compact; at the same time, the swing of the transmission shaft can be well realized by using the connecting rod mechanism, so that the tool disc three can swing, and the sliding block in the sliding block structure can realize reciprocating motion along the sliding groove, so that the clamping and grabbing mechanism / pressing structure can realize reciprocating motion on the tool disc two, and the swing arm mechanism can make the transmission shaft move linearly along the axis, so that the tool disc three and the tool disc two can both realize lifting relative to the tool disc one, thereby meeting the actual action requirements of the corresponding action part.

[0042] Preferably, the first twisting assembly comprises a nail body carrier, a tube body carrier and a twisting mechanism one, the nail body carrier, the tube body carrier and the twisting mechanism one are arranged in sequence along a first straight line, the twisting mechanism one is used for clamping the first end of the core rod to drive the core rod to rotate around its axis, the twisting mechanism one, the nail body carrier and the tube body carrier are cooperatively actuated along the first straight line to combine the core rod, the tube on the tube body carrier and the nail on the nail body carrier into a prefabricated product one, in the prefabricated product one, the second end of the core rod penetrates into the tube and extends into the nail, and one end of the tube assembly ring is tightly abutted against the necked end of the nail.

[0043] The second twisting assembly comprises a twisting mechanism two and a second carrier, the second carrier is used for positioning and placing the prefabricated product one, and the twisting mechanism two is used for cooperating with the first end of the core rod to drive the core rod to rotate around its axis, the twisting mechanism two and the second carrier are cooperatively actuated along the axis of the prefabricated product one to twist and assemble the prefabricated product one into a prefabricated product two, in the prefabricated product two, the neck-breaking groove of the core rod is inserted into the tube and the neck-breaking groove does not enter the nail, and the second end of the core rod penetrates out of the nail.

[0044] The third twisting assembly comprises a twisting mechanism three and a third carrier, the third carrier is used for positioning and placing the prefabricated product two, and the twisting mechanism three is used for clamping the second end of the core rod to drive the core rod to rotate around its axis, the twisting mechanism three and the third carrier are cooperatively actuated along the axis of the prefabricated product two to twist and assemble the prefabricated product two into a prefabricated product three, in the prefabricated product three, the neck-breaking groove of the core rod is inserted into the nail, and the first end of the core rod abuts against the end of the tube.

[0045] The first twisting assembly, the second twisting assembly and the third twisting assembly twist and assemble the core rod, the nail and the tube in different stages, which is simple in structure, reasonable in motion cooperation of each process stage and can well realize the twist and assembly of the prefabricated product three.

[0046] Preferably, the third twisting assembly further comprises:

[0047] a tightening mechanism cooperating with the first end of the core rod to push the core rod along its axis while the twisting mechanism drives the core rod to rotate;

[0048] the tightening mechanism comprises:

[0049] a pushing driving mechanism axially movable along the core rod to apply a pushing action;

[0050] a pushing piece rotationally arranged on the pushing driving mechanism, the pushing piece being configured to abut against the first end of the core rod to rotate with the core rod when the core rod is pushed.

[0051] In the three-time twisting assembly, the twisting of the preform three is usually completed when the twisting mechanism drives the core rod to rotate, but the efficiency is low and the stability is not high, therefore, the tightening mechanism is arranged to push the core rod while the twisting mechanism twists, so as to ensure that the thread feeding between the core rod and the nail body is more stable, thereby further ensuring the stability of the twisting of the preform three. Further, the pushing piece can position and abut against the core rod, thereby creating a structural condition for pushing the core rod. In the twisting process, in order to avoid the core rod from being twisted off, the pushing piece is configured to rotate with the core rod, thereby better ensuring the pushing stability and the twisting stability.

[0052] Preferably, the pipe body carrier is movably switched between the loading position and the twisting position.

[0053] Two parallel slide rails are arranged between the pipe body loading position and the twisting position, and a rail changing part cooperating with the slide rails is arranged beside each slide rail. A sliding member sliding along the slide rails is arranged on the slide rails. A push-pull member is movably connected to the sliding member. The pipe body carrier is arranged on the push-pull member. The push-pull member cooperates with the rail changing part. The rail changing part is in a curved shape in the length direction of the slide rails, so as to drive the push-pull member to move relative to the sliding member during the sliding of the sliding member along the slide rails.

[0054] Two pipe body carriers are included in the present application, which can realize sequential switching between the loading position and the twisting position, and realize movement avoidance under the action of the sliding member and the push-pull member, that is, when one of the pipe body carriers is located at the loading position, the other pipe body carrier moves between the loading position and the twisting position, and / or moves reversely, and / or the pipe body carrier is located at the twisting position. Therefore, the movements of the pipe body carriers of the two stations do not interfere with each other, and do not affect the loading and twisting.

[0055] Compared with the prior art, the core-pulling rivet can effectively improve the screwing efficiency, avoids the jamming in the screwing process, and compared with the screwing process of the one-time forming prefabricated product three, can not only improve the product assembly processing efficiency, but also can avoid or reduce the occurrence of the jamming, so that the yield is higher; the core-pulling rivet can also improve the effectiveness of the pipe body closing, avoids the problem of insufficient locking ability caused by the closing out of place. BRIEF DESCRIPTION OF DRAWINGS

[0056] Figure 1 is a schematic view of the prefabricated product one in the embodiment of the utility model;

[0057] Figure 2 is a schematic view of the pressing equipment in the embodiment of the utility model;

[0058] Figure 3 is a schematic view of the prefabricated product two in the embodiment of the utility model; Figure 2 is a schematic view of another direction;

[0059] Figure 4 is a schematic view of the prefabricated product three in the embodiment of the utility model; Figure 2 is a partial sectional view of the prefabricated product three;

[0060] Figure 5 is a schematic view of the screwing equipment in the embodiment of the utility model;

[0061] Figure 6 is an enlarged view of A of the prefabricated product three; Figure 5

[0062] Figure 7 is a state schematic view of the pipe body carrier multi-station transfer in the embodiment of the utility model;

[0063] Figure 8 is another state schematic view of the pipe body carrier multi-station transfer in the embodiment of the utility model;

[0064] Figure 9 is a top view of the closing assembly one in the embodiment of the utility model;

[0065] Figure 10 is a B-B sectional view of the closing assembly one; Figure 9

[0066] Figure 11 is a schematic view of the prefabricated product three conveying mechanism in the embodiment of the utility model;

[0067] Figure 12 is a schematic view of the nut carrier in the embodiment of the utility model;

[0068] Figure 13 is a top view of the nut carrier; Figure 12

[0069] Figure 14 is a schematic view of the prefabricated product one in the embodiment of the utility model;​​​

[0070] Figure 15 It is a schematic view of the prefabricated product two in the embodiment of the utility model;

[0071] Figure 16 It is a schematic view of the prefabricated product three in the embodiment of the utility model;

[0072] Figure 17 It is a schematic view of the finished product in the embodiment of the utility model.

[0073] In the drawing: 100 - press fitting equipment;101 - tooling tray one;102 - tooling tray two;103 - tooling nail;104 - action part;105 - clamping and grabbing mechanism;106 - sliding mechanism;107 - tooling tray three;108 - power source;109 - transmission shaft;110 - connecting rod mechanism;111 - swing arm mechanism;112 - cam one;113 - cam two;114 - carrier;115 - bearing set;116 - bearing sleeve;117 - locking nut;200 - primary screwing assembly;201 - nail body carrier;202 - screwing mechanism one;203 - slide rail;204 - rail changing part;205 - sliding member;206 - push-pull member;207 - carrier one;208 - carrier two;300 - secondary screwing assembly;301 - screwing mechanism two;302 - secondary carrier;400 - tertiary screwing assembly;401 - screwing mechanism three;402 - tertiary carrier;403 - pushing piece;500 - closing assembly one;501 - tooling one;502 - pressure block one;503 - driving mechanism one;504 - driving mechanism two;505 - part one;506 - part two;507 - inclined surface one;600 - closing assembly two;700 - prefabricated product three conveying mechanism;701 - material positioning block;702 - staggered carrier plate;703 - through port;704 - placing part;800 - nut screwing-in equipment;801 - nut carrier;802 - screwing mechanism four;803 - material placing part;804 - limiting piece one;805 - limiting piece two;806 - material feeding part;807 - material discharging part;808 - device one;809 - device two;810 - material bin;900 - ring;1000 - pipe body;1100 - core rod;1200 - nail body;1300 - nut. DETAILED DESCRIPTION

[0074] In order to make the technical personnel in the art better understand the technical scheme of the utility model, the utility model will be further explained in detail below in combination with specific implementation manners.

[0075] For example, Figures 1-17As shown, a kind of core pull rivet screwing system, including pressing equipment 100, screwing equipment, closing equipment and nut screwing equipment 800;The pressing equipment 100 is used to press the ring 900 into the pipe body 1000;The screwing equipment includes once screwing assembly 200, twice screwing assembly 300 and three times screwing assembly 400, for by three times screwing rivet body 1200, the pipe body 1000 pressed into ring 900, core rod 1100 are screwed into preform three, in the preform three, the necking slot of the core rod 1100 is inserted into the rivet body 1200, the first end of the core rod 1100 and the pipe body 1000 end abut;The closing equipment includes closing assembly one 500 and closing assembly two 600, the closing assembly one 500 moves along the circumference of preform three to carry out multiple closing actions to the pipe body 1000 of preform three, to make preform three into preform four, the closing assembly two 600 carries out closing to the rivet body 1200 of preform four, to make preform four into preform five;The nut screwing equipment 800 includes nut carrier 801 and screwing mechanism four 802, the screwing mechanism four 802 is used to clamp the first end of the core rod 1100 in preform five to drive the core rod 1100 to rotate around its axis, the screwing mechanism four 802, nut carrier 801 cooperate along the axis of preform five to screw preform five, nut 1300 on nut carrier 801 into finished product, in finished product, the nut 1300 and the cap end surface of rivet body 1200 abut.

[0076] In the embodiment, the pressing equipment 100 presses the ring 900 into the pipe body 1000, the pipe body 1000 pressed into ring 900, rivet body 1200, core rod 1100 are carried out three times screwing process by screwing equipment, in turn form preform one, preform two, preform three;Then, preform three is carried out closing action, and rivet body 1200, pipe body 1000 are closed on core rod 1100 to form preform five, then, nut 1300 is screwed into preform five in place, that is, the finished product screwing is completed.

[0077] In the embodiment, the pressing equipment 100 comprises a tooling disc one 101 and a tooling disc two 102; the tooling disc one 101 is uniformly provided with a plurality of tooling pins 103 along the circumference thereof, and the tooling disc one 101 can rotate around the axis thereof; the tooling disc two 102 is coaxially arranged with the tooling disc one 101, and has a plurality of action portions 104, at least a part of the action portions 104 is provided with a clamping and grabbing mechanism 105; a tube body feeding mechanism, a ring feeding mechanism and a pressing mechanism are arranged along the circumference of the tooling disc one 101; at least one action portion 104 is a tube body feeding action portion, one side of the action portion 104 is provided with the tube body feeding mechanism, and the tube body 1000 is clamped to the tooling pin 103 by the clamping and grabbing mechanism 105 of the action portion 104; at least one action portion 104 is a ring feeding action portion, one side of the action portion 104 is provided with the ring feeding mechanism, and the ring 900 is clamped to the tooling pin 103 by the clamping and grabbing mechanism 105 of the action portion 104 and is located above the tube body 1000; at least one action portion 104 is a pressing action portion, and the pressing mechanism is arranged on the action portion 104, and the pressing mechanism presses the ring 900 into the tube body 1000.

[0078] In the embodiment, according to the size of the tooling plate one 101 and / or the spacing of the tooling pins 103, a plurality of tooling pins 103 can be configured, and on this basis, according to the number of tooling pins 103, a set of mechanisms involved in the press-fitting process can be correspondingly configured, including a pipe body feeding mechanism, a ring feeding mechanism, and a press-fitting mechanism. For the convenience of description, the embodiment is described in detail with a set of mechanisms. In the embodiment, the tooling plate two 102 is kept stationary relative to the whole machine, and a plurality of action parts 104 are configured on the tooling plate two 102, two of which are provided with a clamping and grabbing mechanism 105 to pick up the pipe body 1000 and the ring 900 from the pipe body feeding mechanism and the ring feeding mechanism on the side of the tooling plate one 101 and place them on the tooling pin 103, and one of which is provided with a press-fitting mechanism to press-fit the pipe body 1000 and the ring 900, thereby making the pipe body 1000 assembled with the ring 900. In the embodiment, according to the rotation direction of the tooling plate one 101, the pipe body 1000 is first assembled, then the ring 900 is assembled, and then the press-fitting is performed, and finally the press-fitted pipe body 1000 is transferred out of the tooling plate one 101. In some embodiments, the ring 900 can be assembled first, and then the pipe body 1000 is assembled, but in this embodiment, due to the special structure of the pipe body 1000 with a step inside, if the ring 900 is assembled first, it is not easy to take the press-fitted pipe body 1000 from the tooling pin 103. Therefore, during the rotation of the tooling plate one 101, with a certain tooling pin 103 as a reference, it can pass through the pipe body feeding mechanism, the ring feeding mechanism, and the press-fitting mechanism in turn and realize circulation, that is, after reaching the press-fitting mechanism and taking the pipe body 1000 on the tooling pin 103, it moves to the pipe body feeding mechanism along the preset rotation direction. In the above process, the pipe body 1000 and the ring 900 can be fed by a vibrating machine, in the embodiment, the pipe body feeding mechanism realizes feeding by a staggered turntable cooperating with the clamping and grabbing mechanism 105, the ring feeding mechanism realizes feeding by a pushing mechanism cooperating with the clamping and grabbing mechanism 105, the pushing action of the pushing mechanism can be realized by a telescopic rod or a cam structure, and the press-fitting mechanism realizes press-fitting by a press-fitting rod with a hollow stepped hole.

[0079] Therefore, the embodiment integrates the pipe body 1000 feeding process, the ring 900 feeding process, and the press-fitting process, which can effectively reduce the transfer of parts and components, and well realize the connection of the mechanisms involved in each process, with high efficiency and low cost.

[0080] In the embodiment, at least part of the action part 104 is provided with a sliding mechanism 106, at least part of the sliding mechanism 106 is connected with a clamping mechanism 105, and the pressing mechanism is arranged on one of the sliding mechanisms 106. The sliding mechanism 106 can drive the clamping mechanism 105 and the pressing mechanism to move linearly, so that the material clamping and pressing are more convenient to realize, and the structure is simple and easy to realize. The sliding mechanism 106 is specifically a sliding block and sliding rail 203 mechanism.

[0081] As Figures 2-4As shown, in this embodiment, it is necessary to realize the movement of the sliding mechanism 106. In order to save assembly space and reduce costs, it also includes a tooling disc 3 107, a power source 108, a transmission shaft 109, a connecting rod mechanism 110 and a swing arm mechanism 111; the tooling disc 3 107 and the tooling disc 2 102 are coaxially arranged, and a slide block structure is provided between the tooling disc 3 107 and the sliding mechanism 106. The tooling disc 3 107 rotates to make the sliding member in the slide block structure slide along the slide; the power source 108 is provided with a cam 112 and a cam 2 113; the transmission shaft 109 is connected to the tooling disk 2 102 and the tooling disk 3 107; the cam 112 is provided with a cam groove, one end of the connecting rod mechanism 110 cooperates with the cam groove, and the other end is hinged to the transmission shaft 109, so as to drive the tooling disk 3 107 to reciprocate circumferentially along its axis through the power source 108; one end of the swing arm mechanism 111 cooperates with the outer circumference of the cam 2 113, and the other end is hinged to the transmission shaft 109, so as to drive the tooling disk 3 107 and the tooling disk 2 102 to reciprocate axially along its axis through the power source 108. The chute is provided on the tooling plate 3 107, and the sliding member is provided on the clamping mechanism 105 / pressing mechanism; when the tooling plate 3 107 rotates, the sliding member moves along the chute, thereby realizing the linear motion of the clamping mechanism 105 / pressing mechanism, avoiding the use of a more expensive multi-joint robot arm. On this basis, the cam 112 and the connecting rod mechanism 110 are adopted to realize the reciprocating swing of the tooling plate 3 107 through the cam 112, thereby realizing the reciprocating motion of the sliding member along the chute, thereby realizing the clamping mechanism 105 / pressing mechanism. The reciprocating linear motion of the press-fitting mechanism meets the use requirements; in addition to meeting the driving requirements of the tooling disk 3 107, it is also necessary to realize the up and down movement of the tooling disk 2 102 to realize the press-fitting action of the press-fitting mechanism, and the action of the clamping mechanism 105 to place the ring 900 / tube body 1000 on the tooling nail 103. Therefore, a cam 2 113 and a swing arm mechanism 111 are provided. By driving the cam 2 113 to rotate, the swing arm mechanism 111 realizes the up and down movement of the transmission shaft 109 in a lever manner, thereby meeting the use requirements. Obviously, the transmission shaft 109 and the tooling disk 3 107 are fixedly connected. In this embodiment, the power source 108 is a motor, and the sliding member is configured as a roller. In this embodiment, a carrier 114 is also included, and the connecting rod mechanism 110 and the carrier 114 are slidably matched. The assembly position provided by the carrier 114 can ensure the stability of the reciprocating rotation of the transmission shaft 109 due to the sliding fit between the connecting rod mechanism 110 and the carrier 114. The swing arm mechanism 111 in this embodiment includes a swing arm seat and a swing arm. The swing arm seat provides a hinge position for the swing arm, which can ensure the stability of the reciprocating up and down movement of the transmission shaft 109. Figure 4As shown, the transmission shaft 109 is positioned outside the bearing set 115, the bearing set 115 is provided with a bearing sleeve 116, one end of the bearing sleeve 116 abuts against the outer ring of the bearing set 115, and the other end is connected to the tooling disc two 102. Specifically, the transmission shaft 109 is provided with a step, the inner ring of the bearing set 115 is placed on the step, and the inner ring of the bearing set 115 is locked by the lock nut 117, then the bearing sleeve 116 is pressed on the outer ring of the bearing set 115, and the tooling disc two 102 is fixedly connected by the fixing part, and the assembly is completed. At this time, even if the transmission shaft 109 rotates, the tooling disc two 102 can also remain relatively stationary. Of course, in some cases, the tooling disc two 102 will still rotate, in which case a vertical guide column is provided. At this time, a fixed disc can be provided below the tooling disc, and the guide column is fixed on the fixed disc. The guide column passes through the tooling disc two 102 and moves up and down on the transmission shaft 109, realizing the sliding fit of the tooling disc two 102 and the guide column, so as to better avoid the rotation of the tooling disc two 102.

[0082] In this embodiment, a blank action part can also be provided on the tooling disc two 102 to form a redundant design. When the clamping and grabbing mechanism 105 or the pressing assembly or the sliding mechanism 106 fails, targeted mechanism supplement can be carried out to ensure the assembly process integrity of the core-pulling rivet.

[0083] In the process of screwing, the embodiment is realized by three screwing processes. Specifically, the first screwing assembly 200 comprises a nail body carrier 201, a pipe body 1000 carrier and a screwing mechanism one 202. The nail body carrier 201, the pipe body 1000 carrier and the screwing mechanism one 202 are arranged along a first straight line in sequence. The screwing mechanism one 202 is used for clamping the first end of the core rod 1100 to drive the core rod 1100 to rotate around its axis. The screwing mechanism one 202, the nail body carrier 201 and the pipe body 1000 carrier cooperate to act along the first straight line to combine the core rod 1100, the pipe body 1000 on the pipe body 1000 carrier and the nail body 1200 on the nail body carrier 201 into a first preform. In the first preform, the second end of the core rod 1100 penetrates into the pipe body 1000 and extends into the nail body 1200, and the pipe body 1000 is abutted against one end of the ring 900 and the neck-reduced end of the nail body 1200. The second screwing assembly 300 comprises a screwing mechanism two 301 and a second carrier 302. The second carrier 302 is used for positioning the first preform. The screwing mechanism two 301 is used for cooperating with the first end of the core rod 1100 to drive the core rod 1100 to rotate around its axis. The screwing mechanism two 301 and the second carrier 302 cooperate to act along the axis of the first preform to screw the first preform into a second preform. In the second preform, the neck-breaking groove of the core rod 1100 is inserted into the pipe body 1000 and does not enter the nail body 1200, and the second end of the core rod 1100 penetrates out of the nail body 1200. The third screwing assembly 400 comprises a screwing mechanism three 401 and a third carrier 402. The third carrier 402 is used for positioning the second preform. The screwing mechanism three 401 is used for clamping the second end of the core rod 1100 to drive the core rod 1100 to rotate around its axis. The screwing mechanism three 401 and the third carrier 402 cooperate to act along the axis of the second preform to screw the second preform into a third preform. In the third preform, the neck-breaking groove of the core rod 1100 is inserted into the nail body 1200, and the first end of the core rod 1100 abuts against the end of the pipe body 1000.

[0084] In the embodiment, the nail body 1200 is transferred to the nail body carrier 201 by the clamping mechanism one, the pipe body 1000 is transferred to the pipe body 1000 carrier by the clamping mechanism two, and the core rod 1100 is transferred to the screwing mechanism one 202 by the clamping mechanism three. The clamping mechanism one, the clamping mechanism two and the clamping mechanism three have clamping jaws to realize clamping of parts. In the embodiment, the pipe body 1000 carrier can be switched between a feeding position and a screwing position. That is, when the pipe body 1000 carrier is located at the feeding position, the pipe body 1000 can be fed. When the pipe body 1000 carrier carrying the pipe body 1000 moves to the screwing position, the screwing of the first preform can be performed. Figures 5-8As shown, the pipe body 1000 carriers can be multiple to realize multi-station transfer, in order to ensure the efficiency of screwing, the pipe body 1000 carriers of each station are switched in sequence at the loading position and the screwing position, that is, when one of the pipe body 1000 carriers is located at the loading position, the other pipe body 1000 carriers move between the loading position and the screwing position, and / or move reversely, and / or one of the pipe body 1000 carriers is at the screwing position, so that the movements of the pipe body 1000 carriers of each station do not interfere with each other. Specifically, as shown in Figure 5 and Figure 7 shown, two parallel slide rails 203 are arranged between the pipe body 1000 loading position and the screwing position, and two variable rail parts 204 matched with the slide rails 203 are arranged beside the slide rails 203, the slide members 205 are arranged on the slide rails 203 to slide along the slide rails 203, the push-pull members 206 are movably connected to the slide members 205, and the pipe body 1000 carriers are arranged on the push-pull members 206, the push-pull members 206 are matched with the variable rail parts 204, and the variable rail parts 204 are in a curved shape in the length direction of the slide rails 203 to drive the push-pull members 206 to move relative to the slide members 205 during the sliding of the slide members 205 along the slide rails 203. On this basis, the pipe body 1000 carriers movably arranged along the two slide rails 203 move to the same pipe body 1000 loading position, and the pipe body 1000 carriers movably arranged along the two slide rails 203 move to the same screwing position. The push-pull members 206 are slidingly connected to the slide members 205, and the sliding direction of the push-pull members 206 is perpendicular to the guiding direction of the slide rails 203. The distance between the two variable rail parts 204 at the end positions of the slide rails 203 is less than the distance between the two variable rail parts 204 at the middle positions of the slide rails 203. As shown in Figure 5 、 Figure 7 、 Figure 8As shown, the two tube body 1000 carriers are carrier one 207 and carrier two 208 respectively. In a preferred embodiment, when carrier one 207 is located at the loading position, carrier two 208 is located at the screwing position. After loading and screwing are completed, carrier one 207 moves along the slide rail 203 on which it is located and switches to the screwing position, and carrier two 208 moves in the opposite direction along the slide rail 203 on which it is located and switches to the loading position. In other words, carrier one 207 and carrier two 208 carry the tube body 1000 in sequence for loading and screwing. When carrier 1 207 and carrier 2 208 switch motions simultaneously, they move relative to each other under the drive of the corresponding push-pull members 206. As carrier 1 207 and carrier 2 208 simultaneously move along the corresponding slide rails 203, carrier 1 207 and carrier 2 208 move a distance perpendicular to the slide rails 203 and maintain this distance before returning to the loading position or screwing position at the end of the slide rails 203. In other words, carrier 1 207 and carrier 2 208 avoid each other in a direction perpendicular to the slide rails 203 during the motion switching process and remain in the same position at the end of the slide rails 203. This allows for loading and screwing of the tube body 1000.

[0085] like Figure 1 、 Figure 5 As shown, in order to better screw together the third preform, the three-twisting assembly 400 further includes a tightening mechanism. The tightening mechanism cooperates with the first end of the core rod 1100 to simultaneously push the core rod 1100 along its axis while the third twisting mechanism 401 drives the core rod 1100 to rotate. Furthermore, the tightening mechanism includes a pushing drive mechanism and a pushing member 403; the pushing drive mechanism moves axially along the core rod 1100 to exert a pushing action; the pushing member 403 is rotatably mounted on the pushing drive mechanism and is used to abut against the first end of the core rod 1100 so as to rotate with the core rod 1100 when pushing the core rod 1100. Specifically, a bearing is provided on the outside of the pushing member 403, which provides an installation position for the pushing member 403 and supports the pushing member 403. The pushing member 403 is made of rubber material. When it is matched with the core rod 1100, there is a large friction between the pushing member 403 and the core rod 1100, so that it can rotate along with the core rod 1100 when the core rod 1100 rotates. During operation, the core rod 1100 is driven by the twisting mechanism 3 401, so the core rod 1100 has a feed speed relative to the nail body 1200. At this time, the tightening mechanism moves axially along the core rod 1100, so the tightening mechanism also has a feed speed relative to the nail body 1200. When the two feed speeds are consistent, the tightening mechanism pushes the core rod 1100 at the same speed. Since there is a threaded connection relationship between the core rod 1100 and the nail body 1200, the movement of the tightening mechanism pushing the core rod 1100 can better meet the feed movement of the core rod 1100, thereby better meeting the requirements of prefabricated product 3.

[0086] likeFigure 9 and Figure 10 As shown in FIG. 5, in the present embodiment, the neck-in assembly 500 comprises a tool 501, a plurality of pressing blocks 502, a driving mechanism 503 and a driving mechanism 504; the tool 501 is used to match the first end of the core rod 1100; the plurality of pressing blocks 502 are arranged along the circumference of the tool 501 and used to press the pipe body 1000 to neck-in; the driving mechanism 503 is used to drive the pressing blocks to move radially along the tool 501; the driving mechanism 504 is used to drive the pressing blocks to move circumferentially along the tool 501. The preform 3 is transferred to the tool 501 by the clamping mechanism 4, and the axis of the preform 3 is perpendicular to the horizontal plane, and the clamping mechanism 4 remains clamped when the preform 3 and the tool 501 are matched. When the neck-in operation of the pipe body 1000 is performed, the driving mechanism 503 pushes the pressing blocks 502 to act on the pipe body 1000. The driving mechanism 503 can be a telescopic mechanism that pushes the pressing blocks 502 radially along the pipe body 1000, or a telescopic mechanism that pushes the pressing blocks 502 axially along the pipe body 1000. In the embodiment where the driving mechanism 503 pushes the pressing blocks 502 axially along the pipe body 1000, the pressing blocks 502 comprise a component 505 and a component 506, the component 505 has an inclined surface 507, and the component 506 has an inclined surface 508 that matches the inclined surface 507, the component 505 is drivingly connected to the driving mechanism 503, and thus, by the sliding fit of the inclined surface 507 and the inclined surface 508, the free end of the inclined surface 508 can move towards the pipe body 1000, that is, the axial movement of the driving mechanism 503 along the pipe body 1000 is converted into the radial movement of the component 506 along the pipe body 1000, thereby meeting the neck-in requirement of the pipe body 1000. The driving mechanism 504 can drive the pressing blocks 502 to rotate circumferentially along the pipe body 1000, and thus, when the neck-in of the pipe body 1000 is performed, the driving mechanism 504 can drive the pressing blocks 502 to rotate in the same direction for multiple times, and after each rotation, the driving mechanism 503 performs a neck-in operation, thereby better achieving the purpose of fully necking-in the pipe body 1000.

[0087] In the present embodiment, the neck-in assembly 600 comprises a tool 602, a plurality of pressing blocks 603 arranged along the circumference of the tool 602, and a driving mechanism 604; the tool 602 is used to match the first end of the core rod 1100; the pressing blocks 603 are used to press the nail body 1200 to neck-in; the driving mechanism 604 is drivingly connected to the pressing blocks 603 to drive the pressing blocks 603 to move radially along the preform 4. The difference from the neck-in assembly 500 is that the pressing blocks 603 press the nail body 1200 only once under the action of the driving mechanism 604, and it should be noted that the pressing needs to be maintained for a certain period of time to achieve the purpose of fully necking-in the nail body 1200, and during this period of time, the pressing blocks 603 continuously move radially along the preform 4 or are kept pressed.

[0088] AsFigure 11 As shown, in this embodiment, it also includes a preform three conveying mechanism 700, the preform three conveying mechanism 700 includes a fixing block 701 and an offset carrier 702, the fixing block 701 is provided with a through port 703, the offset carrier 702 is provided with a placement portion 704 that cooperates with the tube body 1000, and the offset carrier 702 is movably switched between a receiving position and a feeding position; when the offset carrier 702 is located at the receiving position, the preform three enters the placement portion 704 through the through port 703, at least a portion of the brim of the preform three overlaps the offset carrier 702 to prevent the preform three from falling, and when the offset carrier 702 switches to the feeding position, the preform three is blocked by the fixing block 701 in the placement portion 704 to prevent the preform three from falling out of the opening of the placement portion 704, and moves with the offset carrier 702 to move to the feeding position to be picked up into the closing device. Specifically, after preform three is manufactured, it is transferred to tooling 501 via preform three conveying mechanism 700. Preform three is transferred in a vertical row in the conveying channel, passing through the dowel block 701 at the end of the conveying channel and entering the placement portion 704 of the offset carrier 702. At this time, the brim of the nail body 1200 overlaps the dowel block 701 and the upper side of the offset carrier 702, and then pushes the offset carrier 702 to switch from the receiving position to the feeding position. During this process, the dowel block 701 blocks the opening of the placement portion 704 to prevent preform three from falling off. When preform three reaches the feeding position, the second end of the core rod 1100 is clamped by the clamping mechanism 5 and transferred to the first section, thereby facilitating the mating of the first end of the core rod 1100 with tooling 501.

[0089] In this embodiment, the preform 5 is transferred to the twisting mechanism 4 802 through the clamping mechanism 6, so that the twisting mechanism 4 802 clamps the first end of the core rod 1100. Figure 12 and Figure 13As shown, in the embodiment, the nut carrier 801 is switched between the feeding position and the discharging position, the nut carrier 801 is matched with the screwing mechanism four 802 at the discharging position, the moving direction of the nut carrier 801 is perpendicular to the axis of the preform five, the nut carrier 801 is provided with a feeding part 803, the shape of the feeding part 803 matches the nut 1300. The screwing mechanism four 802 clamps the first end of the core rod 1100, the nut 1300 is screwed into the core rod 1100 from the second end of the core rod 1100 until the cap edge of the nail body 1200 is contacted. When screwing, the screwing mechanism four 802 is first reversed to match the start point of the screw thread of the nut 1300, and then screwed in the positive direction, thereby improving the success rate of screwing. Further, in order to ensure that the nut 1300 can reach the discharging position from the feeding position in a preset posture, the two sides of the nut carrier 801 are provided with a limiting part one 804 and a limiting part two 805 extending along the moving direction of the nut carrier 801, the nut carrier 801 moves between the limiting part one 804 and the limiting part two 805 and is in sliding contact with the limiting part one 804 and the limiting part two 805, the limiting part one 804 is provided with a feeding part 806, and the limiting part two 805 is provided with a discharging part 807; when the nut carrier 801 is located at the feeding position, the feeding part 806 and the feeding part 803 are matched, and when the nut carrier 801 is located at the discharging position, the discharging part 807 and the feeding part 803 are matched. The nut carrier 801 in the embodiment is pushed and pulled by the telescopic mechanism to switch between the feeding part 806 and the discharging part 807, one end of the nut carrier 801 is connected to the driving part of the telescopic mechanism, in order to ensure the stability of the movement, the other end can be connected to a guide rod, so that the nut carrier 801 can move along a straight line stably, and it is known that the nut carrier 801 can also be driven by a linear module. After the finished product is screwed, the screwing mechanism four 802 keeps clamping the core rod 1100, and then the screwing mechanism four 802 carries the finished product away from the nut carrier 801, so that the nut 1300 can fall off the placing part 704 and leave the discharging position, at this time, the screwing mechanism four 802 directly opens its clamping part, and the finished product falls into the hopper 810 by gravity, thereby realizing the collection of the finished product. In another embodiment of the embodiment, the nut carrier 801 includes a device one 808 and a device two 809, the device one 808 is connected to the driving end of the telescopic mechanism, the device two 809 is positioned and installed on one side of the discharging position, the device one 808 and the device two 809 have a gap, and the gaps of the two match the shape of the nut 1300, so that when the device one 808 moves to the discharging position, the movement of the device one 808 is limited by the device two 809, so that the nut 1300 stays at the discharging position.

[0090] The above are only preferred embodiments of the present application, and it should be pointed out that the above preferred embodiments should not be regarded as a limitation to the present application, and the protection scope of the present application should be subject to the range defined by the claims. For ordinary skilled in the art, some improvements and refinements can be made without departing from the spirit and scope of the present application, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A blind rivet screwing system, characterized in that: include: Press-fitting equipment, used to press the ring into the pipe body; The screwing device includes a primary screwing assembly, a secondary screwing assembly, and a tertiary screwing assembly, and is used to screw together the nail body, the tube body pressed into the ring, and the core rod into a third preform by three screwing operations. In the third preform, the broken neck groove of the core rod is inserted into the nail body, and the first end of the core rod and the end of the tube body are abutted. The closing device includes a closing assembly 1 and a closing assembly 2. The closing assembly 1 moves along the circumference of the preform 3 to perform multiple closing actions on the tube body of the preform 3 to transform the preform 3 into the preform 4. The closing assembly 2 closes the nail body of the preform 4 to transform the preform 4 into the preform 5. as well as A nut screwing-in device includes a nut carrier and a screwing mechanism four, wherein the screwing mechanism four is used to clamp the first end of the core rod in the preform five to drive the core rod to rotate around its axis. The screwing mechanism four and the nut carrier cooperate along the axis of the preform five to screw the nut on the preform five and the nut carrier into a finished product. In the finished product, the nut and the brim end face of the nail body are in conflict.

2. A blind rivet installation system according to claim 1, characterized in that: The closing component 1 includes: Tooling 1, used for matching the first end of the core rod; A plurality of pressing blocks are arranged along the circumference of the tooling, and are used to press the pipe body to close the end; Driving mechanism 1, used for driving the pressing block to move radially along tooling 1; and The second driving mechanism is used to drive the pressing block to move along the circumferential direction of the tooling unit.

3. A blind rivet installation system according to claim 1, characterized in that: Also includes: The preform three conveying mechanism includes a material fixing block and a staggered carrier plate. The material fixing block is provided with a through hole. The staggered carrier plate is provided with a placement portion that cooperates with the tube body. The staggered carrier plate is movably switched between a receiving position and a feeding position. Among them, when the offset carrier is in the receiving position, the preform three enters the placement part through the opening, and at least a part of the brim of the preform three overlaps the offset carrier to prevent the preform three from falling. When the offset carrier is switched to the feeding position, the preform three is blocked by the fixed block in the placement part to prevent the preform three from falling out of the opening of the placement part, and follows the movement of the offset carrier to move to the feeding position to be picked up into the closing device.

4. A blind rivet installation system according to claim 1, characterized in that: The nut carrier is movable and switched between the feeding position and the discharging position. The nut carrier cooperates with the twisting mechanism four at the discharging position. The moving direction of the nut carrier is perpendicular to the axis of the preform five. A discharge part is provided on the nut carrier, and the shape of the discharge part matches the nut.

5. A blind rivet installation system according to claim 4, characterized in that: A first limiting member and a second limiting member extending along the movable direction of the nut carrier are provided on both sides of the nut carrier. The nut carrier moves between the first limiting member and the second limiting member and is in sliding contact with the first limiting member and the second limiting member. The first limiting member is provided with a feeding portion, and the second limiting member is provided with a discharging portion. When the nut carrier is located at the feeding position, the feeding part and the discharging part cooperate with each other; when the nut carrier is located at the discharging position, the discharging part and the discharging part cooperate with each other.

6. A blind rivet installation system according to claim 1, characterized in that: The pressing equipment comprises: A tooling plate 1, wherein a plurality of tooling nails are evenly arranged along the circumference of the tooling plate 1, and the tooling plate 1 is rotatable around its axis; and The second tooling disc is coaxially arranged with the tooling disc and has a plurality of action parts, at least some of which are provided with a clamping mechanism; Among them, a tube feeding mechanism, a ring feeding mechanism, and a pressing mechanism are arranged along the circumference of the tooling plate 1; At least one of the action parts is a tube feeding action part, and a tube feeding mechanism is provided on one side of the action part, and the tube is clamped onto the tooling nail through the clamping mechanism of the action part; At least one of the action parts is a ring feeding action part, and a ring feeding mechanism is provided on one side of the action part. The ring is clamped onto the tooling nail through the clamping mechanism of the action part and is located above the tube body; At least one of the action parts is a press-fitting action part, which is provided with a press-fitting mechanism for press-fitting the ring into the tube body.

7. A blind rivet installation system according to claim 6, characterized in that: At least one portion of the action portion is provided with a sliding mechanism, at least one portion of the sliding mechanism is connected to a clamping mechanism, and the pressing mechanism is provided on one of the sliding mechanisms; The pressing device also includes: The tooling disc three is coaxially arranged with the tooling disc two, and a slide block structure is provided between the tooling disc three and the sliding mechanism. The tooling disc three rotates to cause the slider in the slide block structure to slide along the slide groove; A power source, the power source being provided with a cam 1 and a cam 2; A transmission shaft connected to the second tooling disc and the third tooling disc; a connecting rod mechanism, one end of which is engaged with the cam 1 and the other end of which is hinged to the transmission shaft, so as to drive the tooling plate 3 to reciprocate along its axis through a power source; and A swing arm mechanism, one end of which cooperates with the cam 2, and the other end is hinged to the transmission shaft, so as to drive the tooling disc 3 and the tooling disc 2 to move back and forth axially along their axes through a power source.

8. The blind rivet installation system according to claim 1, characterized in that: The one-time twisting assembly includes a nail body carrier, a tube body carrier, and a twisting mechanism. The nail body carrier, the tube body carrier, and the twisting mechanism are arranged in sequence along a first straight line. The twisting mechanism is used to clamp the first end of the core rod to drive the core rod to rotate around its axis. The twisting mechanism, the nail body carrier, and the tube body carrier cooperate along the first straight line to combine the core rod, the tube body on the tube body carrier, and the nail body on the nail body carrier into a preform. In the preform, the second end of the core rod penetrates the tube body and extends into the nail body, and one end of the tube body assembly ring is tightly abutted against the necked end of the nail body. The secondary twisting assembly includes a second twisting mechanism and a secondary carrier, the secondary carrier is used to position and place the preform 1, the second twisting mechanism is used to cooperate with the first end of the core rod to drive the core rod to rotate around its axis, the second twisting mechanism and the secondary carrier cooperate along the axis of the preform 1 to twist the preform 1 into the second preform, in which the broken neck groove of the core rod is inserted into the tube body and the broken neck groove does not enter the nail body, and the second end of the core rod passes through the nail body; The three-time twisting assembly includes a twisting mechanism three and a three-time carrier. The three-time carrier is used to position and place the preform two. The twisting mechanism three is used to clamp the second end of the core rod to drive the core rod to rotate around its axis. The twisting mechanism three and the three-time carrier cooperate along the axis of the preform two to twist the preform two into the preform three. In the preform three, the broken neck groove of the core rod is inserted into the nail body, and the first end of the core rod and the end of the tube body are abutted.

9. A blind rivet installation system according to claim 8, characterized in that: The three-twist assembly also includes: a tightening mechanism, the tightening mechanism cooperating with the first end of the core rod to push the core rod to move along its axis while the twisting mechanism drives the core rod to rotate; The tightening mechanism comprises: A pushing drive mechanism, the pushing drive mechanism moves axially along the core rod to exert a pushing action; The pushing member is rotatably arranged on the pushing drive mechanism, and the pushing member is used to abut against the first end of the core rod so as to rotate with the core rod when pushing the core rod.

10. The blind rivet installation system according to claim 8, characterized in that: The tube carrier is movably switched between a loading position and a screwing position; Two parallel slide rails are provided between the material level and the screwing position on the tube body, and a track changing part cooperating therewith is provided beside each of the two slide rails. A sliding component sliding along the slide rail is provided on the slide rail, and a push-pull component is movably connected to the slide component. The tube body carrier is provided on the push-pull component, and the push-pull component cooperates with the track changing part, and the track changing part is curved in the length direction of the slide rail to drive the push-pull component to move relative to the sliding component during the sliding of the sliding component along the slide rail.

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