CN114682726B

CN114682726B - Rotating disc type riveting machine and operation method thereof

Info

Publication number: CN114682726B
Application number: CN202210274771.4A
Authority: CN
Inventors: 张孝坤
Original assignee: Suzhou Qiao Xun Precision Machinery Co ltd
Current assignee: Suzhou Qiao Xun Precision Machinery Co ltd
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2023-03-24
Anticipated expiration: 2042-03-18
Also published as: CN114682726A

Abstract

The invention discloses a rotating disc type riveting machine which comprises a mounting seat, an original point locking mechanism arranged on the mounting seat, a rotating disc assembly arranged at the axis position of the original point locking mechanism, a blanking mechanism, a rivet blanking mechanism, a riveting clamp, a workpiece inspection mechanism, a vibrating disc and a copper column blanking mechanism which surround the rotating disc assembly and are sequentially arranged on the original point locking mechanism, and at least one die is arranged on the rotating disc assembly. The device can prevent the turntable assembly from driving the turntable assembly or the platform to deviate from the original point position under continuous rotating operation, thereby preventing the operation on the turntable assembly from generating errors.

Description

Rotating disc type riveting machine and operation method thereof

Technical Field

The invention belongs to the technical field of electromagnetic valves, and particularly relates to a rotating disc type riveting machine and an operation method thereof.

Background

Riveting, that is, rivet connection, is a method of connecting a plurality of parts by upsetting a stem in a rivet hole of the part with an axial force to form a head. The riveting has the advantages of simple process equipment, shock resistance, impact resistance, firmness, reliability and the like. The disadvantages are that the noise is large, the health of workers is affected, the structure is generally heavier, the strength of the riveted part is greatly weakened, and the like.

Chinese patent publication No. CN211758298U relates to an automatic riveting machine for a hinge-type airtight door, which is characterized in that a blanking assembly is designed, and in a further embodiment, the blanking assembly is formed by grabbing a copper column by a copper column blanking mechanism through a first air claw and installing the copper column in place; grabbing the rivet by a rivet blanking mechanism by using a second air claw and installing the rivet in place; guiding the pin to a preset position by a pin blanking mechanism by utilizing an arc-shaped guide chute; and finally, driving the punch to press down by the riveting mechanism to complete final riveting. The traditional manual operation modes of placing pins, rivets, copper columns and the like are optimized to be automatic operation modes, and riveting efficiency and riveting reliability are improved. Wherein copper post unloading mechanism, rivet unloading mechanism and pin unloading mechanism are connected together through the gyration dish, optimize traditional streamlined operation into the rotation operation, have reduced the area of equipment, have also further improved riveting efficiency.

However, the problem that the turntable riveting machine is easy to rotate for too long time to cause the turntable assembly to deviate from the original point position under the driving of continuous rotation operation is not considered in the prior art.

Disclosure of Invention

In view of the above problems in the prior art, it is an object of the present invention to provide a rotary disk riveter and a method of operating the same.

The invention provides the following technical scheme:

the utility model provides a carousel formula riveter, includes mount pad, unloading mechanism, rivet unloading mechanism, work piece inspection mechanism, vibration dish and copper post unloading mechanism, installs the initial point locking mechanical system on the mount pad, installs the carousel subassembly of initial point locking mechanical system axle center position department centers on carousel subassembly and install unloading mechanism, rivet unloading mechanism, riveting anchor clamps, work piece inspection mechanism, vibration dish and the copper post unloading mechanism on initial point locking mechanical system in proper order, at least one mould is installed on the carousel subassembly.

The original point locking mechanism comprises a platform installed on a mounting seat, at least one positioning seat is installed on the end face of the platform, a positioning block is installed on the positioning seat, the lower end of the platform is provided with a cylinder part, a rotary disc assembly penetrates through the platform to be installed on the mounting seat, a second photoelectric sensor corresponding to the positioning seat is installed on the rotary disc assembly, an installation base which corresponds to the positioning seat and is installed on the mounting seat is installed on the installation base, a first fixing ring is installed on the installation base, a first photoelectric sensor is installed on the installation base, a fixing seat is further installed on the mounting seat, the platform is installed on the fixing seat, an induction block is installed on the fixing seat, a calibration hole is formed in the induction block, a proximity sensor is installed on the mounting seat, and the proximity sensor is located under the calibration hole.

Specifically, the number of the positioning seats is four, and the positioning seats are uniformly distributed on the end face of the platform.

Specifically, carousel subassembly is including installing the transmission frame on the mount pad, movable mounting has the gear on the transmission frame, install the transmission shaft on the gear, the carousel platform mounting be in on the transmission shaft, the master gear with the gear engagement transmission, the master gear is installed on the motor, the motor is installed on the motor cabinet, the motor cabinet is installed on the mount pad, the master gear is arranged in the cavity that the motor cabinet was equipped with.

Specifically, the gear is disposed within the cylindrical portion.

Specifically, riveting anchor clamps are including installing the base on the platform, install the pillar on the base, install the fixed plate on the pillar, the guiding axle passes through bearing assembly movable mounting on the fixed plate, solid fixed ring two is installed to the guiding axle upper end, the fixed block is installed to the guiding axle lower extreme, the fixed block passes through extension spring and is connected with the fixed plate, install the mould on the fixed block, install the cylinder on the fixed plate, cylinder one end is installed on the fixed block, install two magnetic switch on the cylinder.

Specifically, one of the magnetic switches is located at the zero stroke position of the air cylinder, the distance between the magnetic switches is equal to the distance between the upper die and the die, and a sensor is mounted on the riveting clamp and used for controlling the stop of the motor.

Specifically, riveting jig is including installing the base on the platform, install the pillar on the base, install the fixed plate on the pillar, the guiding axle passes through bearing assembly movable mounting on the fixed plate, solid fixed ring two is installed to the guiding axle upper end, the fixed block is installed to the guiding axle lower extreme, the fixed block passes through extension spring and is connected with the fixed plate, install the mould on the fixed block, it presss from both sides to install the elbow on the fixed plate.

Specifically, a photoelectric sensor II, a photoelectric sensor I, a proximity sensor, an air cylinder, a magnetic switch, a blanking mechanism, a copper column blanking mechanism, a vibrating disc, a workpiece inspection mechanism, a rivet blanking mechanism and a motor are communicatively coupled with a control panel.

Based on the device, the invention also provides an operation method using the rotating disc type riveting machine, which comprises the following steps:

firstly, turning on a second photoelectric sensor, a first photoelectric sensor and a proximity sensor;

turning on a motor, wherein the motor drives a main gear to rotate, and the main gear drives a gear to rotate, so that the gear drives a transmission shaft to rotate, and a turntable platform is driven to rotate;

step three, a sensor on the blanking mechanism senses the die, feeds back a signal and controls the motor to stop, the blanking mechanism is blanked onto the die on the turntable platform, and the motor is controlled to be started after blanking operation is finished;

step four, the rivet blanking mechanism is similar to the operation of the step three;

step five, when the die reaches the position right below the riveting clamp, the sensor senses the die, feeds back a signal, controls the motor to stop, simultaneously starts the air cylinder, drives the upper die to move downwards, rivets a workpiece on the die, and returns to a zero stroke position after the operation of the air cylinder is finished, the magnetic switch at the zero stroke position feeds back a signal, controls the air cylinder to be closed, and starts the motor;

step six, the workpiece inspection mechanism and the copper column blanking mechanism are operated similarly to the step three;

step seven, if the photoelectric sensor II, the photoelectric sensor I or the proximity sensor transmits signals, the position of the platform or the turntable assembly needs to be manually adjusted to keep the initial position;

step eight, if workpieces with different heights need to be riveted, the positions of a magnetic switch and a fixing ring two at the non-zero stroke position are manually changed, the adjusting distances of the magnetic switch and the fixing ring are the same, the distance between the magnetic switch and the fixing ring is equal to the distance between the upper die and the die, and then the steps one to seven are repeated;

and step nine, if the device is in a state of being unusable, manually dismounting the air cylinder, and mounting the elbow clamp at the same position, so that riveting operation can be continued.

The invention has the beneficial effects that:

1. the platform in the device realizes the aim of locking by calibrating the positions of the photoelectric sensor I and the proximity sensor, when the platform deviates from the original point position, the photoelectric sensor transmits signals for a moment, and meanwhile, the proximity sensor leaves the position right below the calibration hole and also transmits signals when sensing the sensing block; the purpose of locking the original point is achieved by the turntable assembly through the photoelectric sensor II, the turntable assembly or the platform is prevented from being driven to deviate from the original point position under the continuous rotation operation of the turntable assembly, and therefore the operation error on the turntable assembly is avoided;

2. the position of a second fixing ring of the device can be changed according to the height of the workpiece, and meanwhile, the position of a magnetic switch at a non-zero stroke position is synchronously changed, so that the device can adapt to workpieces with different heights;

3. the riveting clamp in the second embodiment can be manually controlled to rivet, so that when errors occur in a subsequent device or the subsequent device cannot be operated, the riveting clamp can be manually and continuously operated, only the air cylinder is detached, and the elbow clamp is installed at the same position, so that riveting operation can be continuously carried out.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a top view of a first embodiment of the present invention;

FIG. 2 is a three-dimensional view of the origin locking mechanism of the present invention;

FIG. 3 is a front view of the turntable assembly of the present invention;

FIG. 4 is a front view of a riveting fixture in accordance with a first embodiment of the invention;

fig. 5 is a three-dimensional view of a riveting jig in a second embodiment of the invention.

Detailed Description

Example one

As shown in fig. 1, the invention provides a turntable type riveting machine, which comprises an installation seat 1, an original point locking mechanism 2 installed on the installation seat 1, a turntable assembly 10 installed at the axis position of the original point locking mechanism 2, a blanking mechanism 3, a rivet blanking mechanism 5, a riveting clamp 9, a workpiece inspection mechanism 8, a vibrating disc 7 and a copper column blanking mechanism 4 which surround the turntable assembly 10 and are sequentially installed on the original point locking mechanism 2, and at least one mold 6 is installed on the turntable assembly 10.

Please refer to fig. 2, the origin locking mechanism 2 includes a platform 213 mounted on the mounting base 1, at least one positioning seat 211 is mounted on an end surface of the platform 213, a positioning block 212 is mounted on the positioning seat 211, a cylindrical portion 214 is disposed at a lower end of the platform 213, the turntable assembly 10 is mounted on the mounting base 1 through the platform 213, a second photoelectric sensor 215 corresponding to the positioning seat 211 is mounted on the turntable assembly 10, a mounting base 201 corresponding to the positioning seat 211 and mounted on the mounting base 1, a first fixing ring 202 is mounted on the mounting base 201, a first photoelectric sensor 204 is mounted on the mounting base 201 through a mounting plate 203, a fixing seat 206 is further mounted on the mounting base 1, the platform 213 is mounted on the fixing seat 206 through an inserting pin 205, an induction block 207 is mounted on the fixing seat 206, a calibration hole 208 is disposed on the induction block 207, a proximity sensor 209 is mounted on the mounting base 1 through the mounting plate 210, and the proximity sensor 209 is located under the calibration hole 208.

The number of the positioning seats 211 is four, and the four positioning seats are uniformly distributed on the end face of the platform 213.

The platform 213 calibrates the position through the first photoelectric sensor 204 and the proximity sensor 209 to achieve the purpose of locking, when the platform 213 deviates from the original position, the first photoelectric sensor 204 transmits a signal, and meanwhile, the proximity sensor 209 leaves the position right below the calibration hole 208 and also transmits a signal when sensing the sensing block 207; the turntable assembly 10 achieves the purpose of locking the original point through the second photoelectric sensor 215, and the turntable assembly 10 is prevented from driving the turntable assembly 10 or the platform 213 to deviate from the original point position under continuous rotation operation, so that errors in operation on the turntable assembly 10 are avoided.

Referring to fig. 3, the turntable assembly 10 includes a transmission base 1008 mounted on the mounting base 1, a gear 1003 is movably mounted on the transmission base 1008, a transmission shaft 1002 is mounted on the gear 1003, a turntable platform 1001 is mounted on the transmission shaft 1002, a main gear 1004 is in meshing transmission with the gear 1003, the main gear 1004 is mounted on a motor 1007, the motor 1007 is mounted on a motor base 1005, the motor base 1005 is mounted on the mounting base 1, and the main gear 1004 is disposed in a cavity 1006 defined in the motor base 1005.

The gear 1003 is disposed in the cylindrical portion 214.

The blanking mechanism 3, the copper column blanking mechanism 4, the workpiece inspection mechanism 8 and the rivet blanking mechanism 5 are the same as the blanking assembly, the copper column blanking mechanism, the workpiece inspection mechanism and the rivet blanking mechanism disclosed in the Chinese patent publication No. CN 211758298U.

Please refer to fig. 4, the riveting fixture 9 includes a base 912 installed on the platform 213, a pillar 901 is installed on the base 912, a fixing plate 902 is installed on the pillar 901, a guide shaft 904 is movably installed on the fixing plate 902 through a bearing assembly 903, a fixing ring two 905 is installed at the upper end of the guide shaft 904, a fixing block 906 is installed at the lower end of the guide shaft 904, the fixing block 906 is connected with the fixing plate 902 through a tension spring 909, an upper die 910 is installed on the fixing block 906, an air cylinder 907 is installed on the fixing plate 902, one end of the air cylinder 907 is installed on the fixing block 906, and two magnetic switches 908 are installed on the air cylinder 907.

One of the magnetic switches 908 is located at the zero stroke of the cylinder 907, the distance between the magnetic switches 908 is equal to the distance between the upper die 910 and the die 6, and a sensor is installed on the riveting clamp 9 and used for controlling the stop motor 1007.

The position of the second retaining ring 905 can be changed according to the height of the workpiece, and the position of the magnetic switch 908 at the non-zero stroke is synchronously changed to adapt to workpieces with different heights.

And the tension spring 909 serves to stabilize the movement of the cylinder 907 during operation.

The second photoelectric sensor 215, the first photoelectric sensor 204, the proximity sensor 209, the air cylinder 907, the magnetic switch 908, the blanking mechanism 3, the copper column blanking mechanism 4, the vibration disc 7, the workpiece inspection mechanism 8, the rivet blanking mechanism 5 and the motor 1007 are communicatively coupled to the control panel.

The control panel is internally provided with a PLC controller which can program a numerical control system, the PLC is used as a central control system, and the touch screen is used for realizing the program input and the operation control of the whole machine and realizing the automation of the whole processing process. The control system can be used as a system for connecting each execution element to move according to a logic track, and the execution elements are controlled to operate according to the required operation steps through programming.

Based on the device, the first embodiment of the invention also provides an operation method using the rotating disc type riveting machine, which comprises the following steps:

firstly, turning on a second photoelectric sensor 215, a first photoelectric sensor 204 and a proximity sensor 209;

step two, starting a motor 1007, wherein the motor 1007 drives a main gear 1004 to rotate, and the main gear 1004 drives a gear 1003 to rotate, so that the gear 1003 drives a transmission shaft 1002 to rotate, and the turntable platform 1001 is driven to rotate;

step three, a sensor on the blanking mechanism 3 senses the die 6, feeds back a signal, controls the motor 1007 to stop, blanks the blanking mechanism 3 on the die 6 on the turntable platform 1001, and controls the motor 1007 to be started after the blanking operation is finished;

step four, the rivet blanking mechanism 5 is similar to the operation of the step three;

step five, when the die 6 reaches the position right below the riveting clamp 9, a sensor senses the die 6 and feeds back a signal to control the motor 1007 to stop, the cylinder 907 is started, the cylinder 907 drives the upper die 910 to move downwards to rivet a workpiece on the die 6, the cylinder 907 returns to a zero stroke position after the operation of the cylinder 907 is completed, the magnetic switch 908 at the zero stroke position feeds back a signal to control the closing of the cylinder 907 and the starting of the motor 1007;

sixthly, the workpiece inspection mechanism 8 and the copper column blanking mechanism 4 are similar to the operation of the third step;

step seven, if the second photoelectric sensor 215, the first photoelectric sensor 204 or the proximity sensor 209 transmits signals, the position of the platform 213 or the turntable assembly 10 needs to be manually adjusted to keep the initial position;

step eight, if workpieces with different heights need to be riveted, the positions of the magnetic switch 908 and the second fixing ring 905 at the non-zero stroke are manually changed, and the adjusting distances of the magnetic switch 908 and the second fixing ring 905 are the same, so that the distance between the magnetic switch 908 is equal to the distance between the upper die 910 and the die 6, and then the steps from the first step to the seventh step are repeated.

Example two

As shown in fig. 5, the turntable type riveting machine of the second embodiment has the same structure and installation position except that the structure of the riveting jig 9 is different.

The riveting clamp 9 comprises a base 912 installed on the platform 213, a support column 901 is installed on the base 912, a fixing plate 902 is installed on the support column 901, a guide shaft 904 is movably installed on the fixing plate 902 through a bearing assembly 903, a fixing ring II 905 is installed at the upper end of the guide shaft 904, a fixing block 906 is installed at the lower end of the guide shaft 904, the fixing block 906 is connected with the fixing plate 902 through a tension spring 909, an upper die 910 is installed on the fixing block 906, and an elbow clamp 911 is installed on the fixing plate 902.

The riveting jig 9 of the second embodiment can be manually controlled to rivet, so that when the following device has errors or cannot be operated, the riveting operation can be continued by manually continuously operating the riveting jig by detaching the air cylinder 907 and installing the elbow clamp 911 at the same position.

Based on the device, the second embodiment of the invention also provides an operation method using the rotating disc type riveting machine, which comprises the following steps:

step eight, if workpieces with different heights need to be riveted, the positions of the magnetic switch 908 and the second fixing ring 905 at the non-zero stroke are manually changed, and the adjusting distances of the magnetic switch 908 and the second fixing ring 905 are the same, so that the distance between the magnetic switch 908 is equal to the distance between the upper die 910 and the die 6, and then the steps from the first step to the seventh step are repeated;

step nine, if the device is in a state of being out of use, the air cylinder 907 is manually dismounted, and the elbow clamp 911 is mounted at the same position, so that the riveting operation can be continued.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A turntable type riveting machine comprises a mounting seat (1), a blanking mechanism (3), a rivet blanking mechanism (5), a workpiece inspection mechanism (8), a vibrating disk (7) and a copper column blanking mechanism (4),

it is characterized by also comprising

The automatic riveting device comprises an original point locking mechanism (2) arranged on a mounting seat (1), a rotary table assembly (10) arranged at the axis position of the original point locking mechanism (2), a blanking mechanism (3), a rivet blanking mechanism (5), a riveting clamp (9), a workpiece inspection mechanism (8), a vibrating disc (7) and a copper column blanking mechanism (4) which surround the rotary table assembly (10) and are sequentially arranged on the original point locking mechanism (2), and at least one die (6) is arranged on the rotary table assembly (10);

origin locking mechanical system (2) installs at least one positioning seat (211) including installing platform (213) on mount pad (1) on platform (213) terminal surface, install locating piece (212) on positioning seat (211), platform (213) lower extreme is equipped with drum portion (214), carousel subassembly (10) pass platform (213) and install on mount pad (1), install two (215) with positioning seat (211) corresponding photoelectric sensor on carousel subassembly (10), corresponding and install installation base (201) on mount pad (1) with positioning seat (211), install solid fixed ring (202) on installation base (201), install on installation base (201) photoelectric sensor one (204), still install fixing base (206) on mount pad (1), install at fixing base (206) platform (213), install on fixing base (206) and respond to piece (207), be equipped with calibration hole (208) on response piece (207), install on mount pad (1) proximity sensor (209), just proximity sensor (209) are located calibration hole (208).

2. The rotating disc riveting machine according to claim 1, wherein the positioning seats (211) are four and are evenly distributed on the end surface of the platform (213).

3. The rotating disc type riveting machine according to claim 1, wherein the rotating disc assembly (10) comprises a transmission base (1008) arranged on a mounting base (1), a gear (1003) is movably arranged on the transmission base (1008), a transmission shaft (1002) is arranged on the gear (1003), a rotating disc platform (1001) is arranged on the transmission shaft (1002), a main gear (1004) is in meshing transmission with the gear (1003), the main gear (1004) is arranged on a motor (1007), the motor (1007) is arranged on a motor base (1005), the motor base (1005) is arranged on the mounting base (1), and the main gear (1004) is arranged in a cavity (1006) arranged in the motor base (1005).

4. A carousel riveter according to claim 3, wherein the gear (1003) is located within the cylindrical portion (214).

5. The rotating disc type riveting machine according to claim 3, wherein the riveting fixture (9) comprises a base (912) installed on a platform (213), a support column (901) is installed on the base (912), a fixing plate (902) is installed on the support column (901), a guide shaft (904) is movably installed on the fixing plate (902) through a bearing assembly (903), a second fixing ring (905) is installed at the upper end of the guide shaft (904), a fixing block (906) is installed at the lower end of the guide shaft (904), the fixing block (906) is connected with the fixing plate (902) through a tension spring (909), an upper die (910) is installed on the fixing block (906), an air cylinder (907) is installed on the fixing plate (902), one end of the air cylinder (907) is installed on the fixing block (906), and two magnetic switches (908) are installed on the air cylinder (907).

6. The rotating disc type riveting machine according to claim 5, wherein one magnetic switch (908) is positioned at zero stroke of the air cylinder (907), the distance between the magnetic switches (908) is equal to the distance between the upper die (910) and the die (6), and a sensor is arranged on the riveting clamp (9) and used for controlling the stop motor (1007).

7. The rotating disc type riveting machine according to claim 5, wherein the riveting fixture (9) comprises a base (912) arranged on a platform (213), a supporting column (901) is arranged on the base (912), a fixing plate (902) is arranged on the supporting column (901), a guide shaft (904) is movably arranged on the fixing plate (902) through a bearing assembly (903), a second fixing ring (905) is arranged at the upper end of the guide shaft (904), a fixing block (906) is arranged at the lower end of the guide shaft (904), the fixing block (906) is connected with the fixing plate (902) through an extension spring (909), an upper die (910) is arranged on the fixing block (906), and an elbow clamp (911) is arranged on the fixing plate (902).

8. The rotating disc type riveting machine according to claim 7, wherein a second photoelectric sensor (215), a first photoelectric sensor (204), a proximity sensor (209), an air cylinder (907), a magnetic switch (908), a blanking mechanism (3), a copper column blanking mechanism (4), a vibrating disc (7), a workpiece inspection mechanism (8), a rivet blanking mechanism (5) and a motor (1007) are communicatively coupled with a control panel.

9. A method of operating a rotary disk riveter as claimed in claim 8, comprising the steps of:

firstly, turning on a second photoelectric sensor (215), a first photoelectric sensor (204) and a proximity sensor (209);

turning on a motor (1007), wherein the motor (1007) drives a main gear (1004) to rotate, and the main gear (1004) drives a gear (1003) to rotate, so that the gear (1003) drives a transmission shaft (1002) to rotate, and the turntable platform (1001) is driven to rotate;

thirdly, a sensor on the blanking mechanism (3) senses the die (6), a signal is fed back, the motor (1007) is controlled to stop, the blanking mechanism (3) blanks the die (6) on the turntable platform (1001), and after the blanking operation is finished, the motor (1007) is controlled to be started;

step four, the rivet blanking mechanism (5) is similar to the operation of the step three;

step five, when the die (6) reaches the position right below the riveting clamp (9), a sensor senses the die (6), feeds back a signal, controls a motor (1007) to stop, simultaneously starts an air cylinder (907), drives an upper die (910) to move downwards, rivets a workpiece on the die (6), returns to a zero stroke position after the operation of the air cylinder (907) is completed, feeds back a signal by a magnetic switch (908) at the zero stroke position, controls to close the air cylinder (907), and starts the motor (1007);

sixthly, the workpiece inspection mechanism (8) and the copper column blanking mechanism (4) are similar to the operation of the third step;

step seven, if a photoelectric sensor II (215), a photoelectric sensor I (204) or a proximity sensor (209) transmits signals, the position of a platform (213) or a turntable assembly (10) needs to be manually adjusted to keep the initial position;

step eight, if workpieces with different heights need to be riveted, the positions of a magnetic switch (908) and a second fixing ring (905) at the non-zero stroke are manually changed, and the adjusting distances of the magnetic switch and the second fixing ring are the same, so that the distance between the magnetic switch (908) is equal to the distance between an upper die (910) and a die (6), and then the steps from the first step to the seventh step are repeated;

and step nine, if the device is in a state of being unusable, manually detaching the air cylinder (907), and installing the elbow clamp (911) at the same position, so that the riveting operation can be continued.