Lightweight electric rivet nut gun

Abstract

The invention discloses a lightweight electric rivet nut gun which comprises a shell, a first driving module, a rotary driving module, a rivet head, a rotating shaft, a rivet driving module, a gun head, a connecting seat, a connecting plate and a pressure sensor. Wherein the first driving module is arranged on the shell; the rotation driving module is connected with the first driving module; one end of the rotating shaft is connected with the output end of the rotating driving module, and the other end of the rotating shaft is connected with the rivet pulling head; the input end of the riveting driving module is connected with the output end of the first driving module, and the output end is connected with the riveting head; the gun head is connected with the rivet pulling driving module; the riveting module is sleeved with the connecting seat; the connecting plate sleeves the gun head and is connected with the connecting seat; the pressure sensor is arranged between the rivet pulling module and the gun head. Rotation and linear rivet pulling actions of the rivet pulling head are achieved through a single driving mechanism, the equipment structure is simplified, the cost is reduced, and the rivet pulling precision and efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of riveting equipment, and particularly to a lightweight electric riveting nut gun. Background Art

[0002] In the riveting process of industrial manufacturing, the traditional riveting gun usually operates on the riveting nut in two steps. First, the riveting head rotates and screws into the nut and is threadedly connected to the nut; then the riveting head is driven to retreat to complete the riveting. At present, most of the existing technologies adopt a dual-drive mechanism, generally a rotary motor paired with a cylinder or an electric cylinder, which are respectively responsible for the rotation and riveting actions of the riveting head.

[0003] This dual-drive method has many deficiencies. On the one hand, the equipment structure becomes complex, increasing the volume, weight and manufacturing cost of the equipment; on the other hand, the coordinated control of multiple drive mechanisms is difficult, and it is easy to have uncoordinated actions, affecting the riveting accuracy and quality. Summary of the Invention

[0004] According to an embodiment of the present invention, there is provided a lightweight electric riveting nut gun, comprising: A housing; A first drive module, which is arranged on the housing; A rotary drive module, the input end of which is connected to the output end of the first drive module; A riveting head; A rotating shaft, one end of which is connected to the output end of the rotary drive module, and the other end is connected to the riveting head, and the rotary drive module can drive the rotating shaft and the riveting head to rotate; A riveting drive module, the input end of which is connected to the output end of the first drive module, and the output end is connected to the riveting head, and can drive the riveting head to move linearly; A gun head, which is connected to the riveting drive module, and the riveting head is arranged inside the gun head; A connecting seat, which is sleeved on the riveting module; A connecting plate, which is sleeved on the gun head and is connected to the connecting seat by screws, and the riveting module and the gun head are fixedly connected by cooperating with the connecting seat; A pressure sensor, which is arranged between the riveting module and the gun head and is used to detect the pulling force during riveting.

[0005] Further, the first drive module comprises: a servo motor, a first fixing seat, a second fixing seat, and a first transmission rod; A first driving gear is connected to the output shaft of the servo motor; The first fixing seat and the second fixing seat are respectively arranged on the housing; Both ends of the first transmission rod are rotatably arranged on the first fixed seat and the second fixed seat respectively; A first driven gear, a second driving gear and a third driving gear are further arranged on the first transmission rod; the first driven gear meshes with the first driving gear.

[0006] Furthermore, the rotation driving module includes: a third fixed seat, a first positioning sleeve, a rotating disk, a second driven gear, a first driving sleeve and a first spring; The third fixed seat is arranged on the housing; The first positioning sleeve is rotatably arranged in the third fixed seat; The rotating disk is fixedly connected to the end of the first positioning sleeve; A first limiting groove and a first driving groove are arranged in the rotating disk, the first limiting groove and the first driving groove are communicated, and a first driving block is arranged in the first driving groove; The second driven gear is sleeved on the rotating disk, meshes with the second driving gear, and can drive the rotating disk to rotate; The first driving sleeve is arranged between the rotating shaft and the rotating disk, and is sleeved on the rotating shaft, and can drive the rotating shaft to rotate; A first follower block is arranged at the front end of the first driving sleeve, the first follower block is matched with the first driving block, and the first driving block can drive the first follower block to rotate; The first spring is arranged in the first positioning sleeve, one end is connected to the first positioning sleeve, and the other end is connected to the rear end of the first driving sleeve, and is used for the reset of the first driving sleeve.

[0007] Furthermore, a first limiting part is arranged on the first driving sleeve, and the first limiting part is movably arranged in the first limiting groove to prevent the first driving sleeve from separating from the rotating disk.

[0008] Furthermore, a polygonal groove is arranged in the first driving sleeve, the connecting end of the rotating shaft and the first driving sleeve is of a polygonal structure, and the first driving sleeve can drive the rotating shaft to rotate through the polygonal structure and can also slide relative to the rotating shaft.

[0009] Furthermore, the riveting driving module includes: a screw-nut mechanism, a third driven gear, a second driving sleeve, a second spring, a first limiting member, a third driving sleeve, a fourth driving sleeve and a first transmission member; The nut of the screw-nut mechanism is rotatably arranged on the second fixed seat, its screw shaft core is in a hollow state, and is sleeved on the rotating shaft and the second driving sleeve; The second driving sleeve is sleeved on the rotating shaft, one end is movably connected to the first driving sleeve and the other end is movably connected to the screw; The third driven gear is sleeved on the nut and can drive the nut to rotate, and the third driven gear meshes with the third driving gear; A first limiting step is further arranged inside the screw; The second spring is arranged inside the lead screw, with one end connected to the second driving sleeve and the other end connected to the first limiting step, and is used to drive the second driving sleeve to move; The third driving sleeve is detachably connected to the end of the lead screw; The first limiting piece is sleeved on the rotating shaft and fixedly connected to the rotating shaft; The first limiting piece is rotatably arranged inside the third driving sleeve; The fourth driving sleeve is detachably connected to the third driving sleeve; The first transmission part is T-shaped, with one end movably connected to the rotating shaft and the other end fixedly connected to the riveting head; the large head of the first transmission part is movably arranged inside the fourth driving sleeve, and the fourth driving sleeve can move axially relative to the first transmission part.

[0010] Furthermore, one end of the first transmission part is provided with a polygonal groove, and the connection end of the rotating shaft and the first transmission part is of a polygonal structure, so that the rotating shaft can drive the first transmission part to rotate and can also slide relative to the first transmission part along the axial direction.

[0011] Furthermore, a second limiting part is arranged at one end of the fourth driving sleeve away from the rotating shaft, and there is a margin between the large head of the first transmission part and the second limiting part.

[0012] Furthermore, it further includes: a guiding module and a displacement sensor; The guiding module is connected to the lead screw and can move linearly along with the lead screw; The detection end of the displacement sensor is connected to the guiding module and can detect the displacement of the guiding module.

[0013] Furthermore, the guiding module includes: a connecting block, a second limiting piece and a guiding block; The connecting block is sleeved on the second driving sleeve, fixedly connected to the lead screw, and the upper end of the connecting block is connected to the detection end of the displacement sensor; The guiding block is arranged on the housing, and a guiding groove is arranged on the guiding block; The upper end of the second limiting piece is detachably connected to the connecting block, and the lower end is slidably arranged in the guiding groove and can move reciprocally linearly along the guiding groove.

[0014] The beneficial effects of the present invention: 1. Structural simplification: Only one first driving module is used. Through a clever mechanical transmission design, the rotation and linear riveting actions of the riveting head are realized simultaneously, avoiding the use of multiple driving mechanisms, greatly simplifying the equipment structure, reducing the volume and weight of the equipment, and lowering the manufacturing cost.

[0015] 2. Convenient control: A single driving source reduces the control difficulty and reduces the problem of uncoordinated actions that may occur due to the collaborative work of multiple driving mechanisms.

[0016] 3. Energy-saving and highly efficient: Compared with the traditional multi-drive mechanism solution, this device reduces energy consumption, improves energy utilization efficiency, and at the same time increases the efficiency of the riveting work.

[0017] 4. Convenient maintenance: Most of the components are detachably connected, facilitating the installation, debugging and daily maintenance of the equipment, and reducing the maintenance cost.

[0018] 5. Precise control: The pressure sensor can monitor the pulling force during riveting in real time, and the displacement sensor can accurately control the stroke of the riveting head. Combining the coordinated work of each drive module, precise control of the riveting process is achieved, improving the riveting quality and stability and reducing the rejection rate.

[0019] It is to be understood that both the foregoing general description and the following detailed description are exemplary and are intended to provide further explanation of the claimed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the internal structure of a riveting gun according to an embodiment of the present invention Figure 1 ; Figure 2 For Figure 1 Enlarged view of part A of Figure 3 For Figure 1 Top view of Figure 4 For Figure 3 Cross-sectional view taken along line A-A of Figure 5 For Figure 4 Enlarged view of part B of Figure 6 For Figure 4 Enlarged view of part C of Figure 7 Schematic diagram of the cooperation of a rotating disk, a first drive sleeve and a second drive sleeve according to an embodiment of the present invention; Figure 8 Schematic cross-sectional view of a first drive sleeve according to an embodiment of the present invention; Figure 9 Front view of a first drive sleeve according to an embodiment of the present invention; Figure 10 Schematic diagram of the structure of a rotating shaft according to an embodiment of the present invention; Figure 11 Schematic diagram of the internal structure of a riveting gun according to an embodiment of the present invention Figure 2 。 DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will describe in detail the preferred embodiments of the present invention with reference to the drawings, and further elaborate on the present invention.

[0022] First, it will be combined with Figures 1 to 11 Describe a lightweight electric rivet nut gun according to an embodiment of the present invention, which is used in the riveting process, especially on an automated production line, and has a wide range of application scenarios.

[0023] As Figures 1 to 11 shown, the lightweight electric rivet nut gun according to an embodiment of the present invention includes: A housing 1, Figure 1 Part of the housing is removed, and only one side plate of the housing 1 is shown; A first driving module 2, and the first driving module 2 is arranged on the housing 1; A rotary driving module 3, and the input end of the rotary driving module 3 is connected to the output end of the first driving module 2; A riveting head 7; A rotating shaft 4, one end of the rotating shaft 4 is connected to the output end of the rotary driving module 3, and the other end is connected to the riveting head 7. The rotary driving module 3 can drive the rotating shaft 4 and the riveting head 7 to rotate; A riveting driving module 5, the input end of the riveting driving module 5 is connected to the output end of the first driving module 2, and the output end is connected to the riveting head 7, and can drive the riveting head 7 to move linearly; A gun head 8, the gun head 8 is connected to the riveting driving module 5, and the riveting head 7 is arranged in the gun head 8; A connecting seat 91, and the connecting seat 91 is sleeved on the riveting module 5; A connecting plate 92, the connecting plate 92 is sleeved on the gun head 8 and is connected to the connecting seat 91 by screws, and the riveting module 5 and the gun head 8 are fixedly connected by cooperating with the connecting seat 91; A pressure sensor 93, and the pressure sensor 93 is arranged between the riveting module 5 and the gun head 8 for detecting the pulling force during riveting.

[0024] Furthermore, as Figure 2 shown, in this embodiment, the first driving module 2 includes: a servo motor 21, a first fixing seat 22, a second fixing seat 23, and a first transmission rod 24; A first driving gear 211 is connected to the output shaft of the servo motor 21; The first fixing seat 22 and the second fixing seat 23 are respectively arranged on the housing 1; Both ends of the first transmission rod 24 are rotatably arranged on the first fixing seat 22 and the second fixing seat 23 respectively; A first driven gear 241, a second driving gear 242, and a third driving gear 243 are further arranged on the first transmission rod 24; the first driven gear 241 meshes with the first driving gear 211.

[0025] The force is transmitted to the rotary drive module 3 and the riveting drive module 5 respectively through a servo motor 21. Only one control source is needed, and the rotation and riveting of the riveting head 7 can be completed with one trigger, making the riveting action more coordinated and improving the work efficiency at the same time.

[0026] Further, as Figure 2 、 4 、5, 7 to 9 show, in this embodiment, the rotary drive module 3 includes: a third fixed seat 31, a first positioning sleeve 32, a rotating disk 33, a second driven gear 34, a first drive sleeve 35 and a first spring 36; The third fixed seat 31 is arranged on the housing 1; The first positioning sleeve 32 is rotatably arranged in the third fixed seat 31; The rotating disk 33 is fixedly connected to the end of the first positioning sleeve 32; A first limiting groove 331 and a first driving groove 332 are arranged in the rotating disk 33. The first limiting groove 331 and the first driving groove 332 are communicated, and a first driving block 333 is arranged in the first driving groove 332; The second driven gear 34 is sleeved on the rotating disk 33, meshes with the second driving gear 242, and can drive the rotating disk 33 to rotate; The first drive sleeve 35 is arranged between the rotating shaft 4 and the rotating disk 33, and is sleeved on the rotating shaft 4, and can drive the rotating shaft 4 to rotate; A first follower block 351 is arranged at the front end of the first drive sleeve 35. The first follower block 351 matches the first driving block 333, and the first driving block 333 can drive the first follower block 351 to rotate; The first spring 36 is arranged in the first positioning sleeve 32. One end of the first spring 36 is connected to the first positioning sleeve 32, and the other end is connected to the rear end of the first drive sleeve 35, and is used for the reset of the first drive sleeve 35.

[0027] Further, as Figure 5 、 7 ~9 show, in this embodiment, a first limiting portion 352 is arranged on the first drive sleeve 35. The first limiting portion 352 is movably arranged in the first limiting groove 331 to prevent the first drive sleeve 35 from detaching from the rotating disk 33.

[0028] The first driving sleeve 35 is movably arranged within the rotating disk 33. In the initial state, the first follower block 351 is located within the first driving groove 332, and the first limiting portion 352 is arranged within the first limiting groove 331. When the rotating disk 33 rotates, the first driving block 333 contacts the first follower block 351 to drive the first follower block 351 to rotate, and the first driving sleeve 35 rotates synchronously with the first follower block 351. When an external force pushes the first driving sleeve 35 backward, the first spring 36 is compressed until the first follower block 351 disengages from the first driving groove 332 and enters the first limiting groove 331. At this time, the rotation of the rotating disk 33 cannot drive the first driving sleeve 35 to move.

[0029] Further, as Figures 8 to 10 shown, in this embodiment, a polygonal groove 353 is provided within the first driving sleeve 35. The connecting end of the rotating shaft 4 and the first driving sleeve 35 is of a polygonal structure 41. The first driving sleeve 35 can drive the rotating shaft 4 to rotate through the polygonal structure 41 and can also slide relative to the rotating shaft 4. When the first follower block 351 is located within the first driving groove 332, the first driving sleeve 35 rotates with the rotating disk 33 and simultaneously drives the rotating shaft 4 to rotate. When the first follower block 351 retracts into the first limiting groove 331, the first driving sleeve 35 does not rotate, and at the same time, the rotating shaft 4 also stops rotating.

[0030] Further, as Figure 2 、 4 、6 shown, in this embodiment, the riveting driving module 5 includes: a lead screw nut mechanism 51, a third driven gear 52, a second driving sleeve 53, a second spring 54, a first limiting member 55, a third driving sleeve 56, a fourth driving sleeve 57, and a first transmission member 58; The nut 511 of the lead screw nut mechanism 51 is rotatably arranged on the second fixed seat 23, and its lead screw 512 has a hollow core and is sleeved on the rotating shaft 4 and the second driving sleeve 53; The second driving sleeve 53 is sleeved on the rotating shaft 4. Relative sliding can occur between the second driving sleeve 53 and the rotating shaft 4. One end of the second driving sleeve 53 is movably connected to the first driving sleeve 35, and the other end is movably connected to the lead screw 512; The third driven gear 52 is sleeved on the nut 511 and can drive the nut 511 to rotate. The third driven gear 52 meshes with the third driving gear 243; A first limiting step 5121 is further provided within the lead screw 512; The second spring 54 is disposed within the lead screw 512, with one end connected to the second drive sleeve 53 and the other end connected to the first limiting step 5121, for driving the movement of the second drive sleeve 53; when the lead screw 512 moves towards the rotating disk 33, the second spring 54 is compressed, the second spring 54 drives the movement of the second drive sleeve 53, the second drive sleeve 53 pushes the first sleeve to move until the first follower block 351 retracts into the first limiting groove 331. After the first limiting portion 352 contacts the left inner wall of the first limiting groove 331, the second drive sleeve 53 also stops moving axially. When the lead screw 512 continues to move towards the rotating disk 33, only the second spring 54 is compressed.

[0031] The third drive sleeve 56 is detachably connected to the end of the lead screw 512; The first limiting member 55 is sleeved on the rotating shaft 4 and fixedly connected to the rotating shaft 4, for preventing axial displacement of the rotating shaft 4 during rotation; The first limiting member 55 is rotatably disposed within the third drive sleeve 56; The fourth drive sleeve 57 is detachably connected to the third drive sleeve; The first transmission member 58 is in a T shape, with one end movably connected to the rotating shaft 4 and the other end fixedly connected to the riveting head 7; the large head of the first transmission member 58 is movably disposed within the fourth drive sleeve 57, and the fourth drive sleeve 57 can move axially relative to the first transmission member 58.

[0032] Further, as Figure 6 、 10 shown, in this embodiment, one end of the first transmission member 58 is provided with a polygonal groove 582, and the connecting end of the rotating shaft 4 and the first transmission member 58 is a polygonal structure 41, such that the rotating shaft 4 can drive the first transmission member 58 to rotate and can also slide relative to the first transmission member 58 along the axial direction.

[0033] Further, as Figure 6 shown, in this embodiment, the end of the fourth drive sleeve 57 away from the rotating shaft 4 is provided with a second limiting portion, and there is a margin between the large head of the first transmission member 58 and the second limiting portion.

[0034] Further, as Figure 6 shown, in this embodiment, the end of the third drive sleeve 56 away from the rotating shaft 4 is provided with a third limiting portion 561, and the first limiting member 55 is located between the lead screw 512 and the first limiting member 55.

[0035] When the servo motor 21 operates, it drives the rotating disk 33 and the lead screw 512-nut 511 mechanism 51 to move simultaneously. The rotating disk 33 drives the first driving sleeve 35 to rotate, the first sleeve drives the rotating shaft 4 to rotate, and the rotating shaft 4 drives the riveting head 7 to rotate through the first transmission member 58. At the same time, the nut 511 rotates to drive the lead screw 512 to move linearly towards the rotating disk 33, and drives the rotating shaft 4 to move linearly along with the lead screw 512 while rotating through the first limiting member 55. Since the rotating shaft 4 is movably connected to the first transmission member 58, the rotating shaft 4 only drives the first transmission member 58 to rotate, and because there is a margin between the large head of the first transmission member 58 and the second limiting portion, the second limiting portion will gradually approach the large head. Before the second limiting portion contacts the large head, the riveting head 7 rotates into the nut 511. When the second limiting portion contacts the large head simultaneously or before, the first follower block 351 enters the first limiting groove 331, the first spring 36 is compressed, and the rotating shaft 4 stops rotating. After the second limiting portion contacts the large head, it starts to drive the first transmission member 58 to move linearly towards the rotating disk 33, and the riveting head 7 moves synchronously to start the riveting work. After the riveting is completed, the servo motor 21 stops moving. Then the servo motor 21 rotates in reverse, the first follower block 351 resets under the action of the spring force of the first spring 36, the first driving sleeve 35 drives the rotating shaft 4 to rotate under the action of the first driving block 333, and drives the riveting head 7 to withdraw from the nut 511.

[0036] Further, as Figure 2 、 11 shown, in this embodiment, it further includes: a guiding module 6 and a displacement sensor 94; The guiding module 6 is connected to the lead screw 512 and can move linearly along with the lead screw 512, playing a guiding role for the lead screw 512 to prevent the lead screw 512 from self-rotating.

[0037] The detection end of the displacement sensor 94 is connected to the guiding module 6, and can detect the displacement of the guiding module 6.

[0038] Further, as Figures 1 to 2 shown, in this embodiment, the guiding module 6 includes: a connecting block 61, a second limiting member 62 and a guiding block 63; The connecting block 61 is sleeved on the second driving sleeve 53, is fixedly connected to the lead screw 512, and the upper end of the connecting block 61 is connected to the detection end of the displacement sensor 94; The guiding block 63 is arranged on the housing 1, and a guiding groove 631 is arranged on the guiding block 63; The upper end of the second limiting member 62 is detachably connected to the connecting block 61, and the lower end is slidably arranged in the guiding groove 631 and can move linearly back and forth along the guiding groove 631.

[0039] Working principle: Manually pick up the riveting gun (or install the riveting gun on an automated riveting production line), start the servo motor 21, and the servo motor 21 drives the movement of the rotating disk 33 and the screw rod 512-nut 511 mechanism 51 at the same time. The rotating disk 33 drives the first driving sleeve 35 to rotate, the first sleeve drives the rotating shaft 4 to rotate, and the rotating shaft 4 drives the riveting head 7 to rotate through the first transmission member 58.

[0040] At the same time, the nut 511 rotates to drive the screw rod 512 to move linearly in the direction of the rotating disk 33, the second spring 54 is compressed, and the screw rod 512 drives the rotating shaft 4 to move linearly along with the screw rod 512 while rotating through the first limiting member 55 and the third driving sleeve 56. The guiding module 6 moves linearly along with the screw rod 512, and the pull rod of the displacement sensor 94 moves together with the guiding module 6, and the displacement of the screw rod 512 can be measured in real time.

[0041] Since the rotating shaft 4 is movably connected to the first transmission member 58, the rotating shaft 4 only drives the first transmission member 58 to rotate and does not drive the first transmission member 58 to move along with the screw rod 512.

[0042] Since there is a margin between the large head of the first transmission member 58 and the second limiting portion, the second limiting portion will gradually approach the large head. Before the second limiting portion contacts the large head, it will not drive the riveting head 7 to move; during this process, the riveting head 7 rotates into the nut 511.

[0043] When the second limiting portion contacts the large head or before that, since the movement of the screw rod 512 drives the second driving sleeve 53 to move in the direction of the rotating disk 33 by compressing the second spring 54, the second driving sleeve 53 drives the first driving sleeve 35 to move, so that the first follower block 351 enters the first limiting groove 331, the first spring 36 is compressed, and the rotating shaft 4 stops rotating; after the second limiting portion contacts the large head, it starts to drive the first transmission member 58 to move linearly in the direction of the rotating disk 33, and the riveting head 7 moves synchronously with the first transmission member 58, that is, the riveting work starts. After the riveting is completed, the servo motor 21 stops moving. During this process, the riveting head 7 transmits the pulling force to the gun head 8, the gun head 8 presses the pressure sensor 93, and the pulling force sensor 93 detects its pressure value.

[0044] Then, the servo motor 21 rotates in reverse, and the screw rod 512 drives components such as the rotating shaft 4, the third driving sleeve 56, and the fourth driving sleeve 57 to reset. The first driving sleeve 35 resets under the action of the spring force of the first spring 36, the first follower block 351 enters the first driving groove 332, and the first driving sleeve 35 drives the rotating shaft 4 to rotate under the action of the first driving block 333, driving the riveting head 7 to withdraw from the nut 511.

[0045] Above, refer to Figures 1 to 11A lightweight electric blind rivet nut gun according to an embodiment of the present invention is described. The rotation and linear riveting actions of the riveting head 7 are realized through a single driving mechanism, which simplifies the device structure, realizes the lightweight of the device, reduces energy consumption and cost at the same time; the riveting accuracy and efficiency are further improved by setting a displacement sensor and a pressure sensor.

[0046] It should be noted that in this specification, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, the element defined by the statement "comprising..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0047] Although the content of the present invention has been introduced in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation of the present invention. After those skilled in the art have read the above content, various modifications and alternatives to the present invention will be obvious. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. A lightweight electric blind rivet nut gun, characterized in that, Comprising: A housing; A first driving module, which is arranged on the housing; A rotary driving module, the input end of which is connected to the output end of the first driving module; A riveting head; A rotating shaft, one end of which is connected to the output end of the rotary driving module, and the other end is connected to the riveting head. The rotary driving module can drive the rotating shaft and the riveting head to rotate; A riveting driving module, the input end of which is connected to the output end of the first driving module, and the output end is connected to the riveting head, and can drive the riveting head to move linearly; A gun head, which is connected to the riveting driving module, and the riveting head is arranged inside the gun head; A connecting seat, which is sleeved on the riveting module; A connecting plate, which is sleeved on the gun head and is connected to the connecting seat by screws, and the riveting module is fixedly connected to the gun head by cooperating with the connecting seat; A pressure sensor, which is arranged between the riveting module and the gun head and is used for detecting the pulling force during riveting.

2. The lightweight electric blind rivet nut gun according to claim 1, characterized in that, The first driving module comprises: a servo motor, a first fixing seat, a second fixing seat, and a first transmission rod; A first driving gear is connected to the output shaft of the servo motor; The first fixing seat and the second fixing seat are respectively arranged on the housing; Both ends of the first transmission rod are rotatably arranged on the first fixing seat and the second fixing seat respectively; A first driven gear, a second driving gear, and a third driving gear are further arranged on the first transmission rod; the first driven gear meshes with the first driving gear.

3. The lightweight electric blind rivet nut gun according to claim 2, wherein The rotary driving module comprises: a third fixing seat, a first positioning sleeve, a rotary disk, a second driven gear, a first driving sleeve, and a first spring; The third fixing seat is arranged on the housing; The first positioning sleeve is rotatably arranged inside the third fixing seat; The rotary disk is fixedly connected to the end of the first positioning sleeve; A first limiting groove and a first driving groove are arranged inside the rotary disk, the first limiting groove and the first driving groove are communicated, and a first driving block is arranged inside the first driving groove; The second driven gear is sleeved on the rotary disk, meshes with the second driving gear, and can drive the rotary disk to rotate; The first driving sleeve is arranged between the rotating shaft and the rotary disk and is sleeved on the rotating shaft, and can drive the rotating shaft to rotate; A first follower block is arranged at the front end of the first driving sleeve, the first follower block matches with the first driving block, and the first driving block can drive the first follower block to rotate; The first spring is arranged inside the first positioning sleeve, one end of which is connected to the first positioning sleeve, and the other end is connected to the rear end of the first driving sleeve, and is used for the reset of the first driving sleeve; 4. The lightweight electric blind rivet nut gun according to claim 3, wherein A first limiting portion is arranged on the first driving sleeve, and the first limiting portion is movably arranged inside the first limiting groove and is used for preventing the first driving sleeve from disengaging from the rotary disk.

5. The lightweight electric blind rivet nut gun according to claim 3, characterized in that, A polygonal groove is provided inside the first driving sleeve. The connecting end of the rotating shaft and the first driving sleeve is of a polygonal structure. The first driving sleeve can drive the rotating shaft to rotate through the polygonal structure and can also slide relative to the rotating shaft.

6. The lightweight electric blind rivet nut gun according to claim 3, wherein, The riveting driving module includes: a lead screw nut mechanism, a third driven gear, a second driving sleeve, a second spring, a first limiting member, a third driving sleeve, a fourth driving sleeve, and a first transmission member; The nut of the lead screw nut mechanism is rotatably arranged on the second fixed seat, and its lead screw axis is in a hollow state and sleeved on the rotating shaft and the second driving sleeve; The second driving sleeve is sleeved on the rotating shaft, with one end movably connected to the first driving sleeve and the other end movably connected to the lead screw; The third driven gear is sleeved on the nut and can drive the nut to rotate. The third driven gear meshes with the third driving gear; A first limiting step is further provided inside the lead screw; The second spring is arranged inside the lead screw, with one end connected to the second driving sleeve and the other end connected to the first limiting step, for driving the second driving sleeve to move; The third driving sleeve is detachably connected to the end of the lead screw; The first limiting member is sleeved on the rotating shaft and fixedly connected to the rotating shaft; The first limiting member is rotatably arranged inside the third driving sleeve; The fourth driving sleeve is detachably connected to the third driving sleeve; The first transmission member is in a T shape, with one end movably connected to the rotating shaft and the other end fixedly connected to the riveting head; the large head of the first transmission member is movably arranged inside the fourth driving sleeve, and the fourth driving sleeve can move axially relative to the first transmission member.

7. The lightweight electric blind rivet nut gun according to claim 6, characterized in that, A polygonal groove is provided at one end of the first transmission member. The connecting end of the rotating shaft and the first transmission member is of a polygonal structure, so that the rotating shaft can drive the first transmission member to rotate and can also slide relative to the first transmission member along the axial direction.

8. The lightweight electric blind rivet nut gun according to claim 6, wherein, A second limiting portion is provided at the end of the fourth driving sleeve away from the rotating shaft, and a clearance is left between the large head of the first transmission member and the second limiting portion.

9. The lightweight electric blind rivet nut gun according to claim 6, wherein, It further includes: a guiding module and a displacement sensor; The guiding module is connected to the lead screw and can move linearly along with the lead screw; The detection end of the displacement sensor is connected to the guiding module and can detect the displacement of the guiding module.

10. The lightweight electric blind rivet nut gun according to claim 9, characterized in that, The guiding module includes: a connecting block, a second limiting member, and a guiding block; The connecting block is sleeved on the second driving sleeve, fixedly connected to the lead screw, and the upper end of the connecting block is connected to the detection end of the displacement sensor; The guiding block is arranged on the housing, and a guiding groove is provided on the guiding block; The upper end of the second limiting member is detachably connected to the connecting block, and the lower end is slidably arranged in the guiding groove and can reciprocate linearly along the guiding groove.

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