Displacement detection device for nut and screw riveting machine

Abstract

The utility model relates to the technical field of hand riveters, in particular to a displacement detection device for a nut and screw riveting machine. Comprising a support, a pneumatic motor is fixed to the support and connected with a rivet pulling lifting pressure cylinder, a piston is arranged in the rivet pulling lifting pressure cylinder, a rivet pulling gun head is fixed to the end face of the rivet pulling lifting pressure cylinder, and the piston is fixedly connected with a rivet pulling gun screw in an inner cavity of the rivet pulling gun head. A long-strip-shaped opening is formed in the cavity wall of the rear end of a piston of the rivet pulling lifting pressure cylinder, a displacement lifting rod is fixed to the piston in the radial direction and extends out of a cylinder body from the long-strip-shaped opening, a displacement sensor fixing frame is fixed to the outer side of the cylinder body of the rivet pulling lifting pressure cylinder, and a displacement sensor is fixed to the displacement sensor fixing frame. And an oil inlet is formed in the front end of the riveting lifting pressure cylinder. When high-pressure oil enters the cylinder body from the oil inlet of the rivet-pulling lifting pressure cylinder, the piston moves backwards, the screw of the rivet-pulling gun is pulled to enable the rivet-pulling nut to deform, and the deformation amount is recorded by the displacement sensor. The motor can rotate positively and negatively.

Description

Technical Field

[0001] The utility model relates to the technical field of rivet guns, in particular to a displacement detection device for a nut and screw rivet machine. Background Art

[0002] The nut rivet guns currently on the market cannot detect rivet displacement data and are operated by feel, which can easily cause the stretching nut to be over-stretched or under-stretched, directly affecting the quality of the final fastener.

[0003] The utility model provides a displacement detection device for a nut screw riveting machine, which can measure the displacement distance of rivets according to detection data to meet use requirements. Utility Model Content

[0004] The main purpose of the utility model is to provide a displacement detection device for a nut screw riveting machine, so as to effectively solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a displacement detection device for a nut and screw riveting machine, comprising a bracket, a pneumatic motor is fixed on the bracket, the pneumatic motor is connected to a rivet lifting and boosting cylinder, a piston is arranged inside the rivet lifting and boosting cylinder, a rivet gun head is fixed on the end face of the rivet lifting and boosting cylinder, a rivet gun screw is fixedly connected to the inner cavity of the rivet gun head, a long strip opening is arranged on the outer wall of the rear end cavity of the piston of the rivet lifting and boosting cylinder, a displacement lifting rod is radially fixed to the piston, the displacement lifting rod protrudes out of the rivet lifting and boosting cylinder body from the long strip opening, a displacement sensor fixing frame is fixed on the outside of the rivet lifting and boosting cylinder body, a displacement sensor is fixed on the frame, the displacement sensor is fixed on the frame, the displacement sensor telescopic rod is close to the displacement lifting rod, and the rivet lifting and boosting cylinder is provided with an oil inlet at the front end of the piston.

[0006] Preferably, when high-pressure oil enters the cylinder body from the oil inlet of the riveting lifting and boosting cylinder, the piston moves backward, and the displacement lifting rod on the piston pushes the telescopic rod of the displacement sensor to generate a displacement, which is transmitted to the control system by the displacement sensor.

[0007] Preferably, the pneumatic motor can drive the riveting lifting and boosting cylinder to rotate forward and reverse.

[0008] The beneficial effects of the utility model include: the displacement distance of the rivet can be measured, and then the stress deformation of the rivet nut can be determined to meet the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Attached Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0010] Attached Figure 2 It is a side view structural schematic diagram of the utility model.

[0011] Attached Figure 3 For attachment Figure 2 AA section view.

[0012] Attached Figure 1-3 Among them, displacement sensor 1, displacement sensor fixing frame 2, displacement sensor telescopic rod 3, displacement lifting rod 4, pneumatic motor 5, rivet lifting booster cylinder 6, rivet gun head 7, oil inlet 8, rivet gun screw 9, piston 10, hydraulic cylinder cavity 11, long strip opening 12, bracket 13. DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0014] Attached Figure 1 As shown in FIG. 3 , a displacement detection device for a nut and screw riveting machine includes a bracket 13, on which a pneumatic motor 5 is fixed, the pneumatic motor 5 is connected to a rivet lifting and boosting cylinder 6, a piston 10 is arranged inside the rivet lifting and boosting cylinder 6, a rivet gun head 7 is fixed to the end face of the rivet lifting and boosting cylinder 6, a rivet gun screw 9 is fixedly connected to the inner cavity of the rivet gun head 7, a long opening 12 is arranged on the outer wall of the cavity 11 at the rear end of the piston 10 of the rivet lifting and boosting cylinder 6, a displacement lifting rod 4 is radially fixed to the piston 10, the displacement lifting rod 4 protrudes out of the cylinder body of the rivet lifting and boosting cylinder 6 from the long opening 12, a displacement sensor fixing frame 2 is fixed on the outer side of the cylinder body of the rivet lifting and boosting cylinder 6, a displacement sensor 1 is fixed on it, the displacement sensor telescopic rod 3 is close to the displacement lifting rod 4, and the rivet lifting and boosting cylinder 6 is provided with an oil inlet 8 at the front end of the piston 10.

[0015] Preferably, when high-pressure oil enters the cylinder body from the oil inlet 8 of the riveting lifting booster cylinder 6, the piston 10 moves backward, and the displacement lifting rod 4 on the piston 10 pushes the displacement sensor telescopic rod 3 to generate a displacement, which is transmitted to the control system by the displacement sensor 1.

[0016] Preferably, the pneumatic motor can drive the riveting lifting and boosting cylinder 6 to rotate forward and reverse.

[0017] When in use, put the rivet nut into the rivet gun head 7, start the pneumatic motor 5 to rotate forward, so that the rivet gun screw 9 is screwed into the inner threaded hole of the rivet nut for connection, and then the high-pressure oil enters the oil inlet 8 of the rivet lifting and boosting cylinder 6, and the piston 10 moves backward to pull the rivet nut to deform. At the same time, the displacement sensor 1 detects the moving distance of the displacement lifting rod 4, and can judge the deformation of the rivet nut and determine the size of the tightening force. After completion, the pneumatic motor reverses and the rivet gun screw 9 withdraws from the inner threaded hole of the rivet nut.

[0018] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A displacement detection device for a nut and screw riveting machine, characterized in that: The utility model comprises a bracket, on which a pneumatic motor is fixed, the pneumatic motor is connected to a rivet lifting and boosting cylinder, a piston is arranged inside the rivet lifting and boosting cylinder, a rivet gun head is fixed on the end face of the rivet lifting and boosting cylinder, the piston is fixedly connected to a rivet gun screw in the inner cavity of the rivet gun head, a long opening is arranged on the outer wall of the cavity at the rear end of the piston of the rivet lifting and boosting cylinder, a displacement lifting rod is radially fixed to the piston, the displacement lifting rod protrudes out of the rivet lifting and boosting cylinder body from the long opening, a displacement sensor fixing frame is fixed on the outer side of the cylinder body of the rivet lifting and boosting cylinder, a displacement sensor is fixed on the frame, the displacement sensor is attached to the frame, the telescopic rod of the displacement sensor is close to the displacement lifting rod, and an oil inlet is arranged at the front end of the piston of the rivet lifting and boosting cylinder.

2. A displacement detection device for a nut and screw riveting machine according to claim 1, characterized in that: When high-pressure oil enters the cylinder body from the oil inlet of the riveting lifting booster cylinder, the piston moves backward, and the displacement lifting rod on the piston pushes the telescopic rod of the displacement sensor to produce a displacement, which is transmitted to the control system by the displacement sensor.

3. The displacement detection device for a nut and screw riveting machine according to claim 1, characterized in that: The pneumatic motor can drive the riveting lifting and boosting cylinder to rotate forward and reverse.

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