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CN-122016488-A - Pulling force detects structure

CN122016488ACN 122016488 ACN122016488 ACN 122016488ACN-122016488-A

Abstract

The application discloses a tension detection structure, and relates to the technical field of tension detection. A tension detection structure is applied to a hydraulic riveting tool and comprises a cylinder body part and a pipe body part which are connected, wherein the inside of the pipe body part is communicated with the inside of the cylinder body part, the cylinder body part is connected with a piston part in a sliding mode, the cylinder body part is divided into a first cavity and a second cavity by the piston part, a first air hole communicated with the first cavity and a second air hole communicated with the second cavity are formed in the cylinder body part, the piston part comprises a rod body extending into the pipe body part, the rod body is attached to the pipe body part, a storage cavity communicated with an oil cavity is formed in the pipe body part, and a detection part used for detecting the oil pressure in the storage cavity is arranged on the pipe body part. The application can accurately calculate the whole process of tension change when the nail core breaks.

Inventors

  • GAO MIN

Assignees

  • 瑞萨铆接紧固系统(苏州)有限公司

Dates

Publication Date
20260512
Application Date
20260316

Claims (10)

  1. 1. A tension detection structure is characterized by being applied to a riveting tool, and comprises a cylinder body part (1) and a pipe body part (2) which are connected, wherein the inside of the pipe body part (2) is communicated with the inside of the cylinder body part (1), the cylinder body part (1) is connected with a piston part (3) in a sliding manner, the piston part (3) divides the inside of the cylinder body part (1) into a first cavity (11) and a second cavity (12), and a first air hole (13) communicated with the first cavity (11) and a second air hole (14) communicated with the second cavity (12) are formed in the cylinder body part (1); The piston part (3) comprises a rod body (31) extending into the pipe body part (2), the rod body (31) is attached to the pipe body part (2), a storage cavity (21) communicated with the oil cavity is formed in the pipe body part (2), and a detection part (4) for detecting the oil pressure in the storage cavity (21) is arranged on the pipe body part (2); The tension detection structure further comprises a control module, the detection piece (4) is connected with the control module, and the control module can control the riveting tool to work in response to a detection signal of the detection piece (4).
  2. 2. The tension detecting structure according to claim 1, wherein the pipe body member (2) comprises a mounting pipe (22) and a sealing pipe (23), the mounting pipe (22) is detachably connected to the cylinder body member (1), the mounting pipe (22) presses and fixes the sealing pipe (23) on the cylinder body member (1), and the rod body (31) is attached to the sealing pipe (23).
  3. 3. The tension detecting structure according to claim 2, wherein the sealing tube (23) is provided with an oil inlet hole (24), the oil inlet hole (24) is provided with an oil supplementing device (5), the rod body (31) is provided with a near rest position and a far rest position, the process of moving the rod body (31) from the near rest position to the far rest position comprises a pushing process, when the rod body (31) is positioned at the near rest position, the oil inlet hole (24) is communicated with the storage cavity (21), and when the rod body (31) is positioned at the pushing process, the rod body (31) seals the oil inlet hole (24).
  4. 4. A tension detecting structure according to claim 3, wherein said oil replenishing device (5) comprises a one-way conduction member (51) mounted on the oil inlet hole (24) and an oil replenishing member (52) connected to the one-way conduction member (51).
  5. 5. The tension detecting structure according to claim 4, wherein the unidirectional conducting element (51) is a unidirectional valve, and the oil supplementing piece (52) is any one of an oil storage pot, an oil supplementing cup, an oil storing bag, a conservator or an oil supplementing tank.
  6. 6. A tension detecting structure according to claim 2, wherein said mounting tube (22) comprises a connecting disc (25), a first connecting hole (26) is provided on said connecting disc (25), a second connecting hole is provided on said cylinder member (1), and a fastener is detachably connected to said first connecting hole (26) and said second connecting hole.
  7. 7. A tension detecting structure according to claim 2, wherein the inner wall of the mounting tube (22) is provided with a limiting part (27), and the limiting part (27) is positioned on one side of the rod body (31) away from the cylinder body (1).
  8. 8. A tension detecting structure according to claim 1, wherein sealing members are provided between the rod body (31) and the cylinder body member (1) and between the rod body (31) and the pipe body member (2).
  9. 9. The tension detecting structure according to claim 1, wherein the cylinder member (1) is provided with a first magnetic attraction member (6) and a second magnetic attraction member (7), and the piston member (3) can slide to attract the first magnetic attraction member (6) or the second magnetic attraction member (7).
  10. 10. A tension detecting structure according to claim 1, wherein said detecting member (4) is a pressure sensor.

Description

Pulling force detects structure Technical Field The application relates to the technical field of tension detection, in particular to a tension detection structure. Background In the fastening riveting operation of metal plates and pipes, a hydraulic riveting tool such as a blind rivet gun is a core assembly tool, the rivet core is clamped by a grabbing structure driven by a power unit, and particularly, the power unit generally comprises a piston disc, two oil cavities are formed in the blind rivet gun and positioned at two sides of the piston disc, when one oil cavity is filled with oil, the piston disc is pushed to drive the grabbing structure to grab the rivet core and drive the rivet core to stretch so as to gradually break the rivet core, so that riveting is completed, and the actual tension value in the riveting process directly determines the tightness and reliability of a connecting structure, which is a key index for controlling the quality of a riveting process. In the prior art, the tension detection of the blind rivet gun is mostly simple auxiliary detection or no direct detection means, the main stream mode still relies on the experience of operators to judge the riveting effect, and the blind rivet gun with a few matched detection structures also only indirectly calculates the tension value by additionally installing a single sensor at the power unit or the stress part to convert the tension into an electric signal or a pressure signal, and the tension can be acquired by the sensor after multistage transmission. The traditional rivet gun is difficult to ensure the process consistency of different operators and different operation batches by judging the riveting effect through experience of operators, real-time detection of the actual tension value in the riveting operation process is difficult to be carried out, and operators are difficult to calculate the tension change from the stretching of the rivet core to the breaking of the rivet core in the whole process, so that the problems that whether connection looseness caused by under-pulling or advanced breakage of the rivet core caused by over-pulling occurs or not are inconvenient to judge. The existing simple detection structure has the problems of detection lag and low precision due to long tension transmission path. In addition, the prior art is difficult to record and trace the tensile force data, and the core requirement of process quality control cannot be met in the industrial field with strict requirements on the connection strength. In this regard, how to accurately calculate the whole process of the tension change when the staple core breaks is a problem to be solved. Disclosure of Invention In order to accurately calculate the whole process of tension change when the nail core breaks, the application provides a tension detection structure. The application provides a tension detection structure which adopts the following technical scheme: A tension detecting structure is applied to a riveting tool; the tension detection structure comprises a cylinder body part and a pipe body part which are connected, wherein the inside of the pipe body part is communicated with the inside of the cylinder body part; the cylinder body part is connected with a piston part in a sliding manner, the piston part divides the interior of the cylinder body part into a first cavity and a second cavity, and a first air hole communicated with the first cavity and a second air hole communicated with the second cavity are formed in the cylinder body part; The piston part comprises a rod body extending into the pipe body part and is attached to the pipe body part, a storage cavity communicated with the oil cavity is formed in the pipe body part, and a detection part for detecting the oil pressure in the storage cavity is arranged on the pipe body part; the tension detecting structure further comprises a control module, the detecting piece is connected with the control module, and the control module can control the riveting tool to work in response to a detecting signal of the detecting piece. Through adopting above-mentioned technical scheme, after will storing chamber and oil pocket intercommunication and storing the intracavity and annotate fluid, can realize the removal of piston member through annotating gas to second gas pocket or first gas pocket, the piston member removes and can drive the body of rod and remove in order to realize the push away of fluid to the oil pocket of blind rivet rifle, and the effect of tensile nail core can be carried out to the blind rivet rifle this moment, along with the tensile going on of nail core, the fluid pressure in the storing chamber can constantly rise until the nail core is broken, and fluid pressure falls back. According to the application, based on the ratio data of the riveting tension value and the oil pressure value, the tension change when the nail core is broken can be measured through the detection of the oil