Servo rivet tool with tension measurement function

Abstract

The utility model relates to the technical field of metal plates, and discloses a servo rivet tool with tension measurement, which comprises a machine core front seat, a machine core rear seat and a mounting base, a gun head mounting plate is fixedly mounted in the middle of the interior of the machine core front seat, and a gun head is sleeved in the middle of the gun head mounting plate. The top of the gun head penetrates through the top of the machine core front base, the outer wall of the gun head is sleeved with a gun head sleeve, a tail nail pipe base is fixedly installed at the bottom of the installation base, a tail nail rod connector is inserted into the bottom of the tail nail pipe base, and a tail nail discharging connector is inserted into the middle of the bottom of the tail nail rod connector. A position sensing seat is arranged at the joint of the tail nail rod and the gun head in the machine core rear seat, and a second needle bearing and a first needle bearing are connected to the outer wall of the gun head above the position sensing seat in a sleeving mode. And data errors caused by data fluctuation due to external reasons are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of sheet metal, in particular to a servo riveting tool with tensile force measurement. Background Art

[0002] A servo riveting tool with tensile force measurement is a precision riveting device integrating servo technology and tensile force measurement function. It is mainly driven by a servo motor and combines a high-precision tensile force sensor to realize real-time monitoring and control of the tensile force during the riveting process, and is mainly used in occasions where strict control of riveting quality is required.

[0003] At present, general servo riveting tools on the market read the torque value of the servo motor to convert the tensile force value. Because the servo torque feedback is affected by the servo's own PID adjustment system and external interference, the read data fluctuates greatly and the accuracy is low. Therefore, a servo riveting tool with tensile force measurement is proposed to solve the above problems. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a servo riveting tool with tensile force measurement, which has the advantages of reducing data errors caused by external factors, etc., and solves the problems that the read data of the servo riveting tool fluctuates greatly and the accuracy is low because the servo torque feedback is affected by the servo's own PID adjustment system and external interference.

[0006] (2) Technical Solutions

[0007] To achieve the purpose of reducing data errors caused by external factors, the utility model provides the following technical solutions:

[0008] A servo riveting tool with tensile force measurement includes a front seat of the movement, a rear seat of the movement, and a mounting base. The front seat of the movement and the rear seat of the movement are arranged on the mounting base, and the front seat of the movement is arranged on the top of the rear seat of the movement;

[0009] A gun head mounting plate is fixedly installed in the middle inside the front seat of the movement. A gun head is sleeved in the middle of the gun head mounting plate. The top of the gun head penetrates through the top of the front seat of the movement, and a gun head sleeve is sleeved on the outer wall of the gun head. A gun nozzle is inserted into the middle of the top of the gun head, and a claw piece is arranged at the bottom of the gun nozzle;

[0010] A tail nail tube base is fixedly installed at the bottom of the mounting base. A tail nail rod joint is inserted into the bottom of the tail nail tube base. A tail nail discharge joint is inserted into the middle of the bottom of the tail nail rod joint. A tail nail rod is inserted into the top of the tail nail tube base, and the top of the tail nail rod is arranged inside the gun head;

[0011] A position sensing seat is provided at the connection between the internal tail nail rod and the gun head of the movement rear seat. A second needle roller bearing and a first needle roller bearing are sleeved on the outer wall of the gun head above the position sensing seat. A ball screw is arranged between the second needle roller bearing and the first needle roller bearing. Another third needle roller bearing is arranged on the outer wall of the second needle roller bearing. Thrust bearings are fixedly installed at the left and right ends of the top of the second needle roller bearing.

[0012] As a preferred technical solution of the present utility model, a spring is fixedly pressed on the top of the tail nail rod. A catheter head is arranged on the top of the spring. The top of the catheter head abuts against the claw piece. A claw piece rear sleeve is sleeved between the claw piece and the catheter head. A claw piece rear sleeve is sleeved between the top of the claw piece and the gun nozzle.

[0013] As a preferred technical solution of the present utility model, a nail suction pipe valve core is arranged inside the connection between the tail nail pipe base and the tail nail rod joint. A sealing plate is fixedly installed below the internal tail nail rod of the mounting base 12. A sensor PCB board is arranged below the first needle roller bearing of the movement rear seat 8. A PCB cover plate is clamped on the surface of the sensor PCB board.

[0014] As a preferred technical solution of the present utility model, a C-shaped dust-proof ring is sleeved on the bottom of the gun head mounting plate. A force sensor is arranged below the C-shaped dust-proof ring inside the movement front seat 1. A force sensor rear pressure plate is arranged on the top of the outer wall of the force sensor. A force sensor partition plate is arranged on the bottom of the outer wall of the force sensor. An O-ring is arranged on the surface of the force sensor partition plate.

[0015] As a preferred technical solution of the present utility model, a servo motor is arranged on the top inner wall of the mounting base 12. A motor gear inner expansion shaft is rotatably connected in the middle of the servo motor. An inner expansion shaft gear is sleeved on the outer wall surface of the motor gear inner expansion shaft. A wire threading plate is arranged on the top of the servo motor.

[0016] As a preferred technical solution of the present utility model, a protective cover is arranged above the movement front seat. The movement front seat, the movement rear seat, and the mounting base are all arranged inside the protective cover. An air source joint is fixedly installed on the outer wall of the tail nail pipe base.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present utility model provides a servo riveting tool with tensile force measurement, having the following beneficial effects:

[0019] For this servo riveting tool with tensile force measurement, by inserting a force sensor into the relatively stressed part between the pull rod and the gun head, the force signal during riveting is collected and transmitted to the control system, reducing the data error caused by data fluctuations due to external reasons. Description of the drawings

[0020] Figure 1 This is a schematic structural diagram of the present utility model.

[0021] In the figure: 1. Front seat of the movement; 2. Ball screw; 3. First needle roller bearing; 4. Thrust bearing; 5. Second needle roller bearing; 6. Third needle roller bearing; 7. Force sensor partition; 8. Rear seat of the movement; 9. Position sensing seat; 10. Rear pressure plate of the force sensor; 11. C-shaped dust-proof ring; 12. Installation base; 13. Servo motor; 14. Inner expansion shaft gear; 15. Motor gear inner expansion shaft; 16. Sealing plate; 17. Sensor PCB board; 18. Wire threading board; 19. PCB cover plate; 20. Force sensor; 21. O-ring; 22. Tail nail rod; 23. Suction nail tube valve core; 24. Tail nail rod joint; 25. Tail nail discharge joint; 26. Tail nail tube base; 27. Rear sleeve of the claw; 28. Gun head mounting plate; 29. Conduit head; 31. Outer sleeve of the claw; 32. Claw; 33. Gun nozzle; 34. Gun head sleeve; 35. Protective cover; 36. Air source joint. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] In the description of the present utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0024] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] Please refer to Figure 1, a servo riveting tool with tensile force measurement, including a front movement seat 1, a rear movement seat 8, and a mounting base 12. The front movement seat 1 and the rear movement seat 8 are arranged on the mounting base 12, and the front movement seat 1 is arranged on the top of the rear movement seat 8;

[0026] In this embodiment, a gun head mounting plate 28 is fixedly installed in the middle inside the front movement seat 1. A gun head is sleeved in the middle of the gun head mounting plate 28. The top of the gun head penetrates through the top of the front movement seat 1, and a gun head sleeve 34 is sleeved on the outer wall of the gun head. A gun nozzle 33 is inserted in the middle of the top of the gun head. A claw piece 32 is arranged at the bottom of the gun nozzle 33;

[0027] In this embodiment, a tail nail tube base 26 is fixedly installed at the bottom of the mounting base 12. A tail nail rod joint 24 is inserted at the bottom of the tail nail tube base 26. A tail nail discharge joint 25 is inserted in the middle of the bottom of the tail nail rod joint 24. A tail nail rod 22 is inserted at the top of the tail nail tube base 26, and the top of the tail nail rod 22 is arranged inside the gun head;

[0028] In this embodiment, a position sensing seat 9 is arranged at the connection between the tail nail rod 22 and the gun head inside the rear movement seat 8. A second needle roller bearing 5 and a first needle roller bearing 3 are sleeved on the outer wall of the gun head above the position sensing seat 9. A ball screw 2 is arranged between the second needle roller bearing 5 and the first needle roller bearing 3. Another third needle roller bearing 6 is arranged on the outer wall of the second needle roller bearing 5. Thrust bearings 4 are fixedly installed at the left and right ends of the top of the second needle roller bearing 5.

[0029] In this embodiment, a spring 30 is fixedly pressed at the top of the tail nail rod 22. A catheter head 29 is arranged at the top of the spring 30. The top of the catheter head 29 abuts against the claw piece 32. A claw piece rear sleeve 27 is sleeved between the claw piece 32 and the catheter head 29. A claw piece rear sleeve 27 is sleeved between the top of the claw piece 32 and the gun nozzle 33.

[0030] In this embodiment, a suction nail tube valve core 23 is arranged inside the connection between the tail nail tube base 26 and the tail nail rod joint 24. A sealing plate 16 is fixedly installed below the tail nail rod 22 inside the mounting base 12. A sensor PCB board 17 is arranged below the first needle roller bearing 3 of the rear movement seat 8, and a PCB cover plate 19 is clamped on the surface of the sensor PCB board 17

[0031] In this embodiment, a C-shaped dust-proof ring 11 is sleeved at the bottom of the gun head mounting plate 28. A force sensor 20 is arranged below the C-shaped dust-proof ring 11 inside the front movement seat 1. A force sensor rear pressure plate 10 is arranged at the top of the outer wall of the force sensor 20. A force sensor partition 7 is arranged at the bottom of the outer wall of the force sensor 20. An O-ring 21 is arranged on the surface of the force sensor partition 7.

[0032] In this embodiment, a servo motor 13 is provided at the top of the inner wall of the mounting base 12. An inner expansion shaft gear 14 is sleeved on the outer wall surface of the motor gear inner expansion shaft 15 which is rotatably connected to the middle of the servo motor 13. A wire threading plate 18 is provided at the top of the servo motor 13.

[0033] In this embodiment, a protective cover 35 is provided above the front seat 1 of the movement. The front seat 1 of the movement, the rear seat 8 of the movement, and the mounting base 12 are all arranged inside the protective cover 35. An air source connector 36 is fixedly installed on the outer wall of the tail nail tube base 26.

[0034] Working principle: The servo motor 13 transmits power through gears to the ball screw 2 with a gear ratio to achieve deceleration and transmission. The ball screw 2 changes the rotational motion into a linear motion, driving the claw piece rear sleeve 27, the claw piece outer sleeve 31, and the claw piece 32. When this assembly moves backward, the claw piece 32 is guided and squeezed by the claw piece outer sleeve 31 to make the claw piece 32 grip the rivet rod and pull it backward. In the relative movement of the rivet flange between the nozzle 33 and the nozzle sleeve 34, a relative pulling force is generated to tighten the rivet.

[0035] The suction nail tube valve core 23, the tail nail rod joint 24, and the tail nail tube base 26 generate a vacuum pressure under the power of air, adsorb the rivet at the initial stage of riveting, and suck out the tail nail of the rivet to the waste collection area after riveting is completed.

[0036] The force sensor 20 detects the riveting force during riveting with the force sensor partition plate 7, the force sensor rear pressing plate 10, the relative thrust bearing 4, and the ball screw 2.

[0037] Front seat 1 of the movement: The installation base for the screw bearing and the force sensor 20.

[0038] The first needle roller bearing 3 and the second needle roller bearing 5: Support the radial movement of the ball screw 2;

[0039] Thrust bearing 4: Support the axial force of the screw;

[0040] The third needle roller bearing 6: Support the radial movement of the gear shaft;

[0041] Force sensor partition plate 7: Support the force sensor 20 and support the forward and backward movement of the screw;

[0042] Rear seat 8 of the movement: Support the screw together with the second needle roller bearing 5.

[0043] Position sensing seat 9: Detect the position of the ball screw 2 to prevent over-travel.

[0044] Force sensor rear pressing plate 10: Support the force sensor 20.

[0045] C-shaped dust-proof ring 11: Dust-proof for the screw part.

[0046] Mounting base 12: The base that connects the movement component and the motor component.

[0047] Wire threading board 18: Fix and protect the cable.

[0048] Tail nail rod 22: Connect to the inner hole of the ball screw 2, and transfer the broken rivet tail rod to the tail nail discharging device under the action of vacuum.

[0049] The nail suction tube valve core 23, the tail nail rod joint 24, and the tail nail tube base 26 form a nail suction device, which will complete the functions of sucking nails and discharging waste nail rods.

[0050] The rear sleeve 27 of the claw piece, the catheter head 29, the spring 30, the outer sleeve 31 of the claw piece, and the claw piece 32 form a rivet nail rod clamping device. During operation, they move relative to the gun nozzle 33 and the gun head sleeve 34 to complete the riveting action.

[0051] Protective cover 35: Protective cover for appearance finishing.

[0052] Gas source connector 36: Vacuum nail suction gas source.

[0053] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A servo rivet tool with tension measurement, comprising a movement front seat (1), a movement rear seat (8), and a mounting base (12), wherein the movement front seat (1) and the movement rear seat (8) are arranged on the mounting base (12), and the movement front seat (1) is arranged on the top of the movement rear seat (8); Features: A gun head mounting plate (28) is fixedly installed in the middle of the movement front seat (1), a gun head is sleeved in the middle of the gun head mounting plate (28), the top of the gun head penetrates the top of the movement front seat (1) and a gun head cover (34) is sleeved on the outer wall of the gun head, a gun nozzle (33) is inserted in the middle of the top of the gun head, and a claw piece (32) is provided at the bottom of the gun nozzle (33); A tail nail tube base (26) is fixedly mounted on the bottom of the mounting base (12), a tail nail rod joint (24) is plugged into the bottom of the tail nail tube base (26), a tail nail discharge joint (25) is plugged into the middle of the bottom of the tail nail rod joint (24), a tail nail rod (22) is plugged into the top of the tail nail tube base (26), and the top of the tail nail rod (22) is arranged inside the gun head; A position sensing seat (9) is provided at the connection between the tail nail rod (22) inside the movement rear seat (8) and the gun head; a second needle roller bearing (5) and a first needle roller bearing (3) are sleeved on the outer wall of the gun head above the position sensing seat (9); a ball screw (2) is provided between the second needle roller bearing (5) and the first needle roller bearing (3); another third needle roller bearing (6) is provided on the outer wall of the second needle roller bearing (5); and thrust bearings (4) are fixedly installed at the left and right ends of the top of the second needle roller bearing (5).

2. The servo rivet tool with tension measurement according to claim 1, characterized in that: A spring (30) is fixed on the top of the tail nail rod (22), a guide tube head (29) is arranged on the top of the spring (30), the top of the guide tube head (29) abuts against the claw piece (32), a claw piece rear sleeve (27) is sleeved between the claw piece (32) and the guide tube head (29), and a claw piece rear sleeve (27) is sleeved between the top of the claw piece (32) and the gun nozzle (33).

3. The servo rivet tool with tension measurement according to claim 1, characterized in that: A nail suction tube valve core (23) is arranged inside the connection between the tail nail tube base (26) and the tail nail rod joint (24); a sealing plate (16) is fixedly installed below the tail nail rod (22) inside the mounting base (12); a sensor PCB board (17) is arranged below the first needle roller bearing (3) of the movement rear seat (8); and a PCB cover plate (19) is clamped on the surface of the sensor PCB board (17).

4. The servo rivet tool with tension measurement according to claim 1, characterized in that: A C-shaped dust ring (11) is sleeved on the bottom of the gun head mounting plate (28); a force sensor (20) is arranged below the C-shaped dust ring (11) inside the movement front seat (1); a force sensor rear pressure plate (10) is arranged on the top of the outer wall of the force sensor (20); a force sensor partition (7) is arranged on the bottom of the outer wall of the force sensor (20); and an O-ring (21) is arranged on the surface of the force sensor partition (7).

5. The servo rivet tool with tension measurement according to claim 1, characterized in that: A servo motor (13) is arranged at the top of the inner wall of the mounting base (12); a motor gear inner expansion shaft (15) is rotatably connected in the middle of the servo motor (13); an inner expansion shaft gear (14) is sleeved on the outer wall surface of the motor gear inner expansion shaft (15); and a threading plate (18) is arranged at the top of the servo motor (13).

6. The servo rivet tool with tension measurement according to claim 1, characterized in that: A protective cover (35) is arranged above the movement front seat (1); the movement front seat (1), the movement rear seat (8) and the mounting base (12) are all arranged inside the protective cover (35); and an air source connector (36) is fixedly mounted on the outer wall of the tail nail tube base (26).

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