A hand-held power tool

Abstract

The utility model discloses a manual pull riveter belongs to pull riveting technical field, including shell, gun head, screw rod and nut, clutch and transmission link, the motor is fixed in the shell, and the gun head includes telescopic cover that slides along the axial connection on the shell, rotates the cover in telescopic cover and is fixed in the rivet rod of rotating cover, the nut is rotatably connected in the shell and is connected with the motor, and the screw rod is slidably connected in the shell along the axial, and the screw rod is connected with telescopic cover in the gun head, the clutch is rotatably connected in the shell and is connected with the output end of motor, and the clutch end of clutch has transmission link and is engaged, and transmission link passes through the screw rod that is hollow and is connected with rotating cover in the gun head. The utility model only needs a motor to drive rivet rod to rotate and telescopic pull action simultaneously, controls rivet rod to rotate telescopic combination action and only telescopic action through the clutch state of clutch to carry out nut pull riveting operation.

Description

Technical Field

[0001] This utility model relates to the field of riveting technology, and in particular to a manual riveting gun. Background Technology

[0002] A manual rivet gun is a handheld device used for riveting nuts, capable of both rotating and pulling the nut. However, current technology requires two power sources: a motor for rotation and a cylinder or electric cylinder for pulling. This results in heavy manual rivet guns, making them inconvenient for long-term use. Summary of the Invention

[0003] To address the problem that existing manual rivet guns require two power sources, resulting in significant weight, the present invention aims to provide a manual rivet gun that at least partially solves the aforementioned problem.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A manual rivet gun, comprising:

[0006] A housing, in which a motor is fixedly installed, and a handle is formed on the housing, the handle being provided with a switch for controlling the motor;

[0007] The gun head includes a telescopic sleeve slidably connected to the outer shell along the axial direction, a rotating sleeve rotatably connected to the telescopic sleeve, and a rivet rod fixed in the rotating sleeve;

[0008] A lead screw and a nut, wherein the nut is rotatably connected in the housing and connected to the output end of the motor, the lead screw is axially slidably connected in the housing, and the lead screw is connected to the telescopic sleeve in the gun head;

[0009] And a clutch, which is rotatably connected in the housing and connected to the output end of the motor, the clutch engagement end of which engages with a transmission rod, the transmission rod passing through the hollow lead screw and connecting to the rotating sleeve in the gun head.

[0010] In some preferred embodiments, a drive shaft is rotatably connected inside the housing, the drive shaft is connected to the output end of the motor, and the nut and the clutch are both connected to the drive shaft.

[0011] In some preferred embodiments, a driven gear, a telescopic gear, and a rotary gear are fixedly mounted on the transmission shaft. The driven gear meshes with a driving gear mounted on the motor shaft of the motor. The telescopic gear is used to drive the nut to rotate, and the rotary gear is used to drive the clutch to rotate.

[0012] In some preferred embodiments, the gun head further includes a spring disposed between the telescopic sleeve and the rotating sleeve. The spring is used to provide an elastic force to move the rotating sleeve away from the telescopic sleeve, and a limiting structure is provided between the rotating sleeve and the telescopic sleeve to prevent it from falling off.

[0013] In some preferred embodiments, the gun head further includes a gun head shell detachably connected to the housing, the gun head shell having a through hole for exposing the rivet.

[0014] In some preferred embodiments, a guide sleeve is fixed inside the outer casing, and a guide groove parallel to the lead screw is provided on the guide sleeve. A guide member connected to the lead screw is provided in the guide groove.

[0015] In some preferred embodiments, the motor is a servo encoder motor.

[0016] In some preferred embodiments, a control box is also included, which contains a low-voltage power supply and a controller electrically connected to the low-voltage power supply. The control box also contains a servo driver connected to the servo encoder motor via a cable. The servo driver is also electrically connected to the controller. A power input interface is provided on the side wall of the control box, which is electrically connected to the low-voltage power supply and the servo driver.

[0017] In some preferred embodiments, the control box is further provided with a touch screen and an alarm, the touch screen and the alarm being connected to the low-voltage power supply, and the touch screen and the alarm being connected to the controller.

[0018] In some preferred embodiments, the controller is a Siemens SIMATIC S7-1200 series PLC controller, the low-voltage power supply is a Mean Well MDR-60-24, the servo encoder motor is an Orui SDSA-201T32**A, the servo driver is an Orui SD20-E201T2M1, and the touch screen is a Weintek TK8072iP.

[0019] The beneficial effects of this utility model by adopting the above technical solution are as follows: This utility model only requires one motor to drive the rivet rod to perform rotation and extension / pulling actions simultaneously. The power of the motor drives the rivet rod to perform extension / pulling actions through the lead screw and nut on the one hand, and the power of the motor drives the rivet rod to perform rotation actions through the clutch and transmission rod on the other hand. The engagement and disengagement state of the clutch controls whether the rivet rod performs rotation and extension / pulling actions or only extension / pulling actions, thereby performing nut riveting operations. Attached Figure Description

[0020] Figure 1 This is a front view of the manual rivet gun in this utility model;

[0021] Figure 2 This is a front view of the manual rivet gun of this utility model after removing the outer shell and the gun head shell;

[0022] Figure 3 This is a cross-sectional view of the manual rivet gun in this utility model;

[0023] Figure 4 This is a schematic diagram of the control box in this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the control box after removing part of the box body in this utility model.

[0025] In the diagram: 1-Outer shell, 2-Motor, 3-Handle, 4-Switch, 5-Gun head, 51-Telescopic sleeve, 52-Rotating sleeve, 53-Rivet rod, 54-Spring, 55-Gun head shell, 6-Lead screw, 7-Nut, 8-Clutch, 9-Transmission rod, 10-Cage, 11-Guide sleeve, 12-Guide component, 13-Driven gear, 14-Telescopic function gear, 15-Rotating function gear, 16-Drive gear, 17-Control box, 18-Low voltage power supply, 19-Controller, 20-Servo driver, 21-Touch screen, 22-Alarm, 23-Power input interface, 24-Transmission shaft. Detailed Implementation

[0026] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0027] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the description of the structure of this utility model shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] The terms "first" and "second" in this technical solution are merely designations for corresponding structures that are identical or similar, or that perform similar functions. They do not represent an arrangement of the importance of these structures, nor do they imply any ranking, comparison of size, or other meaning.

[0029] Furthermore, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two structures. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the overall concept and the specific context of the solution.

[0030] Example 1

[0031] A type of manual rivet gun, such as Figure 1-3 As shown, it includes a housing 1, a motor 2, a handle 3, a switch 4, a gun head 5, a lead screw 6, a nut 7, a clutch 8, and a transmission rod 9.

[0032] The outer casing 1 is gun-shaped. The motor 2 is a servo motor, which is fixedly installed inside the outer casing 1, usually located on the upper part and the side closer to the user (referred to as the proximal end). The handle 3 is formed on the lower middle part of the outer casing 1, and the switch 4 is located on the handle 3. The switch 4 is used to control the on / off state of the motor 2.

[0033] The outer casing 1 has an opening on its distal side for mounting the gun head 5. The gun head 5 includes a telescopic sleeve 51, a rotating sleeve 52, and a rivet 53.

[0034] The telescopic sleeve 51 is slidably connected to the opening at the far end of the outer shell 1 along the axial direction. At the same time, the proximal end of the telescopic sleeve 51 is provided with an outwardly protruding limiting block, and the opening at the far end of the outer shell 1 has an inwardly turned retaining ring to prevent the telescopic sleeve 51 from falling out of the opening at the far end of the outer shell 1.

[0035] The proximal end of the rotating sleeve 52 is inserted into the distal end of the telescopic sleeve 51. The diameter of the rotating sleeve 52 is smaller than the inner diameter of the telescopic sleeve 51, allowing the rotating sleeve 52 to rotate freely within the telescopic sleeve 51. In addition, a limiting structure is provided between the rotating sleeve 52 and the telescopic sleeve 51 to prevent the rotating sleeve 52 from falling out of the telescopic sleeve 51. For example, the outer edge of the proximal end of the rotating sleeve 52 is also provided with an outwardly protruding limiting block, and the distal end of the telescopic sleeve 51 is also provided with an inwardly turned retaining ring. At the same time, a flange is also provided on the outer circumferential side of the rotating sleeve 52. This flange is used to prevent the rotating sleeve 52 from being unable to extend into the telescopic sleeve 51, thus restricting the axial movement of the rotating sleeve 52 within the telescopic sleeve 51.

[0036] Typically, the flange on the rotating sleeve 52 is spaced a certain distance from the far end of the telescopic sleeve 51, allowing the rotating sleeve 52 to move axially within a small range. The outer wall of the rotating sleeve 52 is also fitted with a spring 54, one end of which abuts against the flange of the rotating sleeve 52 and the other end against the far end of the telescopic sleeve 51. The spring 54 is used to provide elastic force to move the rotating sleeve 52 away from the telescopic sleeve 51.

[0037] The rivet 53 is fixed at the far end of the rotating sleeve 52, for example, by threaded connection or welding.

[0038] Typically, the gun head 51 also includes a gun head housing 55, which is used to protect the telescopic sleeve 51, the rotating sleeve 52, and the spring 54. The proximal end of the gun head housing 55 is detachably connected to the distal end of the outer casing 1, for example, by a threaded connection. The distal end of the gun head housing 55 is provided with a through hole for exposing the rivet 53.

[0039] The lead screw 6 and nut 7 are used to connect the motor 2 and the telescopic sleeve 51, thereby converting the rotational motion output by the motor 2 into the telescopic motion of the telescopic sleeve 51, which in turn drives the rivet 53 to move linearly along its axial direction.

[0040] The clutch 8 and the transmission rod 9 are used to connect the motor 2 and the rotating sleeve 52, thereby converting the rotational motion output by the motor 2 into the rotational motion of the rotating sleeve 52, which in turn drives the rivet 53 to rotate around its axis. When the clutch 8 is in the "disengaged" state, the rotational motion of the rivet 53 is released.

[0041] The nut 7 is rotatably connected to the retainer 10, which is fixedly installed at the far end opening of the outer casing 1. The far end of the retainer 10 is also used to install the gun head housing 55. The telescopic sleeve 51 is axially slidably connected relative to the retainer 10. The lead screw 6 is screwed into the nut 7 and is equipped with a guide structure, including a guide sleeve 11 and a guide member 12. The guide sleeve 11 is fixedly connected to the retainer 10 and has a guide groove parallel to the lead screw 6. The guide groove contains the guide member 12 for fixed connection with the outer wall of the lead screw 6. A sleeve (not shown in the figure) is also connected between the lead screw 6 and the telescopic sleeve 51. Thus, when the nut 7 rotates under the drive of the motor 2, it drives the lead screw 6 to move axially, thereby driving the telescopic sleeve 51 to move axially through the sleeve, and further driving the rotating sleeve 52 and the rivet 53 to move linearly along the axial direction. The direction of linear movement of the rivet 53 can be changed by controlling the forward and reverse rotation of the motor 2.

[0042] The clutch 8 is rotatably connected inside the housing 1 and is located on the proximal side of the lead screw 6. The clutch 8 rotates under the drive of the motor 2. The lead screw 6 is also configured as a hollow structure, and the transmission rod 9 is coaxially inserted through the lead screw 6 and the sleeve. The proximal end of the transmission rod 9 is inserted into the engagement port of the clutch 8, and the distal end of the transmission rod 9 is connected to the proximal end of the rotating sleeve 52 to facilitate the transmission of torque to the rotating sleeve 52. For ease of disassembly and maintenance, the distal end of the transmission rod 9 is usually configured with a non-circular cross-section, such as a regular hexagon or a regular square, to facilitate the transmission of torque. Correspondingly, the cross-section of the inner wall of the proximal end of the rotating sleeve 52 is also configured with a corresponding shape. In addition, to ensure a stable connection between the two, a spring is also fitted on the outer wall of the transmission rod 9. The distal end of the spring is welded or abuts against the fixed position of the transmission rod 9, and the proximal end abuts against the clutch 8. The spring is used to provide elastic force to move the transmission rod 9 toward the rotating sleeve 52, thereby ensuring that the transmission rod 9 can always be connected to the rotating sleeve 52. The clutch 8 can be any type of existing technology, as long as it can controllably clamp and release the transmission rod 9.

[0043] In this embodiment, both the nut 7 and the clutch 8 rotate under the drive of the motor 2. Specifically, a drive shaft 24 is rotatably connected inside the housing 1, which transmits the torque of the motor 2 to both the nut 7 and the clutch 8. A driven gear 13, a telescopic gear 14, and a rotary gear 15 are fixedly mounted on the drive shaft 24. The driven gear 13 meshes with the driving gear 16 mounted on the motor shaft of the motor 2. The telescopic gear 14 drives the nut 7 to rotate; for example, the outer circumferential sidewall of the nut 7 has teeth integrally formed to mesh with the telescopic gear 14, or the nut 7 has a gear ring coaxially fixed to mesh with the telescopic gear 14. The rotary gear 15 drives the clutch 8 to rotate; for example, the outer circumferential sidewall of the clutch 8 has teeth integrally formed to mesh with the rotary gear 15, or the clutch 8 has a gear ring coaxially fixed to mesh with the rotary gear 15.

[0044] Example 2

[0045] In this embodiment, motor 2 is a servo encoder motor, which has an encoder to facilitate the detection of the motor's rotation angle. For example, the model of the servo encoder motor is Orui SDSA-201T32**A. With a fixed transmission ratio, the relationship between the rotation angle of motor 2 and the linear motion distance of rivet 53, and the relationship between the rotation angle of motor 2 and the rotation angle of rivet 53 are both fixed.

[0046] Other examples Figure 4-5 As shown, it also includes a control box 17, which contains a low-voltage power supply 18, a controller 19 and a servo driver 20. The side wall of the control box 17 is equipped with a touch screen 21, an alarm 22 and a power input interface 23.

[0047] The power input interface 23 is used to receive 220V AC mains power. The power input interface 23 is directly connected to the servo driver 20 via a cable on one hand, and also connected to the low-voltage power supply 18 via a cable on the other hand.

[0048] The servo driver 20 is connected to the servo encoder motor via a cable, thereby driving the motor 2. The model of the servo driver 20 is Orui SD20-E201T2M1. The low-voltage power supply 18 is used to convert 220V high-voltage electricity to 24V low-voltage electricity. The model of the low-voltage power supply 18 is Mean Well MDR-60-24. The controller 19, the touch screen 21, and the alarm 22 are all connected to the low-voltage power supply 18 via cables to obtain the 24V low-voltage electricity for operation.

[0049] The servo driver 20 is also connected to the controller 19 via a cable, allowing the controller 19 to control the rotation of the motor 2, including the rotation angle control. Additionally, the servo driver 20 has a current detection function, enabling the controller 19 to monitor the current of the motor 2 during operation. It is easy to understand that the current value of the motor 2 during operation has a linear relationship with the tension of the rivet 53, which can be calibrated experimentally. Therefore, the controller 19 can determine the tension of the rivet 53 through the current value fed back by the servo driver 20. The controller 19 is a Siemens SIMATIC S7-1200 series PLC controller.

[0050] Both the touchscreen 21 and the alarm 22 are connected to the controller 19 via cables. The touchscreen 21 displays various operating parameters received by the controller 19 (rotation angle and current of the motor 2, tension of the rivet 53, etc.) and also provides operating commands to the controller 10. The touchscreen 21 is a Weintek TK8072iP. The alarm 22 is used to sound an alarm when the operating parameters of the manual rivet gun exceed a preset threshold. The alarm 22 can be an audible, visual, or audible-visual alarm.

[0051] It is easy to understand that the switch 4 on the handle 3 is also connected to the controller 19 via a cable. When a command is sent to the controller 19 through the switch 4, the controller 19 controls the servo driver 20 to work according to the preset program, including motor speed control, motor forward and reverse rotation control, and motor rotation angle control. The lower end of the handle 3 is provided with an interface for wiring.

[0052] It is easy to understand that during the riveting operation, the rotation and linear motion of the rivet rod 53 are not always working simultaneously. The rivet rod 53 will stop after rotating a certain angle. This is achieved by the "disengagement" action of the clutch 8. Therefore, for ease of operation, the clutch 8 is configured as an electromagnetic clutch that is easy to control electrically. It is connected to the controller 19 through a cable and also obtains the electrical energy for operation through the low-voltage power supply 18.

[0053] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A manual rivet gun, characterized in that, include: A housing, in which a motor is fixedly installed, and a handle is formed on the housing, the handle being provided with a switch for controlling the motor; The gun head includes a telescopic sleeve slidably connected to the outer shell along the axial direction, a rotating sleeve rotatably connected to the telescopic sleeve, and a rivet rod fixed in the rotating sleeve; A lead screw and a nut, wherein the nut is rotatably connected in the housing and connected to the output end of the motor, the lead screw is axially slidably connected in the housing, and the lead screw is connected to the telescopic sleeve in the gun head; And a clutch, which is rotatably connected in the housing and connected to the output end of the motor, the clutch engagement end of which engages with a transmission rod, the transmission rod passing through the hollow lead screw and connecting to the rotating sleeve in the gun head.

2. The manual rivet gun according to claim 1, characterized in that: A drive shaft is rotatably connected inside the housing. The drive shaft is connected to the output end of the motor. The nut and the clutch are both connected to the drive shaft.

3. The manual rivet gun according to claim 2, characterized in that: A driven gear, a telescopic gear, and a rotary gear are fixedly mounted on the transmission shaft. The driven gear meshes with a driving gear mounted on the motor shaft of the motor. The telescopic gear is used to drive the nut to rotate, and the rotary gear is used to drive the clutch to rotate.

4. The manual rivet gun according to claim 1, characterized in that: The gun head also includes a spring, which is disposed between the telescopic sleeve and the rotating sleeve. The spring is used to provide an elastic force to move the rotating sleeve away from the telescopic sleeve, and a limiting structure is provided between the rotating sleeve and the telescopic sleeve to prevent it from falling off.

5. The manual rivet gun according to claim 1, characterized in that: The gun head also includes a gun head shell detachably connected to the outer casing, and the gun head shell has a through hole for exposing the rivet.

6. The manual rivet gun according to claim 1, characterized in that: A guide sleeve is fixed inside the outer casing. A guide groove parallel to the lead screw is opened on the guide sleeve, and a guide component connected to the lead screw is provided in the guide groove.

7. The manual rivet gun according to claim 1, characterized in that: The motor is a servo encoder motor.

8. The manual rivet gun according to claim 7, characterized in that: It also includes a control box, which contains a low-voltage power supply and a controller electrically connected to the low-voltage power supply. The control box also contains a servo driver connected to the servo encoder motor via a cable. The servo driver is also electrically connected to the controller. The side wall of the control box has a power input interface, which is electrically connected to the low-voltage power supply and the servo driver.

9. The manual rivet gun according to claim 8, characterized in that: The control box is also equipped with a touch screen and an alarm. The touch screen and the alarm are connected to the low-voltage power supply and are also connected to the controller.

10. The manual rivet gun according to claim 9, characterized in that: The controller is a Siemens SIMATIC S7-1200 series PLC controller, the low-voltage power supply is a Mean Well MDR-60-24, the servo encoder motor is an Orui SDSA-201T32**A, the servo driver is an Orui SD20-E201T2M1, and the touch screen is a Weintek TK8072iP.

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