Novel skin tension length detection device for passenger car side skin tension equipment

Abstract

The utility model discloses a novel skin tension length detection device for passenger car side skin tension equipment, which relates to the technical field of automobile production and comprises an air cylinder and a PLC (programmable logic controller), a laser sensor is arranged outside the air cylinder and electrically connected with the PLC, and the PLC is electrically connected with the air cylinder. And a reflecting plate is arranged on a piston rod of the cylinder in a position corresponding to the laser sensor. According to the utility model, the tensioning process of the welding skin tensioning equipment can be digitally displayed and the production flow can be automatically controlled, the laser sensor can accurately detect the tensioning length, and the tensioning amount can be displayed in real time through the human-computer interaction interface, so that the purpose of accurate detection is realized, the stability and safety of detection data are effectively ensured, and the production efficiency is improved. Meanwhile, the maximum tensioning value of the skin of each trolley can be automatically stored and recorded, automatic control over traditional equipment operated according to experience is achieved, and the qualified rate of the skin tensioning quality and the traceability of production data are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile production, concretely to a novel skin tension length detection device for bus side skin tension equipment. BACKGROUND

[0002] With the continuous development of the bus industry market, product quality and lightweight are one of the most important ways for various bus industries to survive in competition. High-quality side skin can effectively improve the sealing and noise reduction effect of the whole vehicle. The side skin is tensioned (according to industry specifications, the tensioning amount reaches 7 / 10,000 during the tensioning process to ensure the subsequent whole vehicle quality requirements), so that the side skin reaches the plastic deformation zone, deformation strengthening occurs, the yield limit of the side skin is improved, the ability to resist deformation is enhanced, the stiffness of the whole vehicle is increased, the safety performance of the whole vehicle is improved, and the inherent frequency of the side skin is also improved, effectively reducing the noise generated by the side skin during driving.

[0003] The bus side skin tensioning equipment is a special tool for accurately fixing the metal or composite skin on the outside of the vehicle body to the frame. This equipment ensures the flatness, fastening force and consistency during skin installation, which is crucial for ensuring the appearance quality and structural integrity of the bus.

[0004] The patent document with the publication number "CN 208050682 U" discloses a kind of automobile side skin heat expansion and tension device, including top frame, four support columns, electric heater and expansion and tension station etc., although the expansion and tension device can start immediately after single side heating is completed, greatly saves intermediate time, improves production efficiency, in addition, the self-conductivity of side skin is utilized, and a loop is formed with expansion and tension chuck, and heating of side skin can be realized by turning on electric heater and passing current, which is simple and efficient, but the expansion and tension device lacks tension detection device, and the traditional detection method is mostly detected by magnetic ring, however, this detection method will be disturbed and influenced by high temperature, magnetic field, welding and other factors, resulting in large fluctuation and inaccuracy of data; Some manufacturers use heating temperature as the basis for tension quality detection, due to resistance, skin width and other reasons, the heating problem is quite different, and it is difficult to accurately reflect the relevant tension data of the tension equipment. UTILITY MODEL CONTENTS

[0005] (I) Technical problem solved

[0006] In view of the deficiencies of the prior art, the utility model provides a novel skin tension length detection device for bus side skin tension equipment, which solves the problems raised in the above background technology.

[0007] (II) Technical scheme

[0008] In order to achieve the above object, the utility model discloses a novel skin tension length detection device for bus side skin tension equipment, including the cylinder, still including PLC, the outside of cylinder is equipped with laser sensor, and laser sensor and PLC are electrically connected, and the position of the piston rod of cylinder corresponding with laser sensor is equipped with the reflector.

[0009] Optionally, the pneumatic control valve is electrically connected between the PLC.

[0010] Optionally, the pneumatic control valve is electrically connected between the PLC.

[0011] Optionally, the pneumatic control valve is electrically connected between the PLC.

[0012] Optionally, the cylinder body of cylinder is fixedly connected with sensor support, and the laser sensor is fixedly connected on the sensor support.

[0013] Optionally, the utility model also includes man-machine interface, and the man-machine interface is electrically connected between the PLC.

[0014] (Three) beneficial effects

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The tension process of the welding skin tension equipment can be digitalized and displayed and the production flow is automatically controlled, the laser sensor can accurately detect the tension length and stably transmit to the PLC, and the tension amount is displayed in real time through the man-machine interface, so that the on-site staff can monitor in real time, and the purpose of accurate detection is realized, the stability and safety of detection data are effectively guaranteed, the maximum tension value of the skin of each vehicle can be automatically stored and recorded, the traditional experience-based operation equipment is realized automatic control, the skin tension quality qualification rate and the traceability of production data are improved, and the utility model can be widely applied to skin welding tension processes and assembly lines of buses, trucks and trains, and great economic benefits and social benefits are brought. DRAWINGS

[0017] Figure 1 It is the structural diagram of the utility model;

[0018] Figure 2 It is the plane structure schematic diagram of the cylinder of the utility model;

[0019] Figure 3 It is the three-dimensional structure schematic diagram of the cylinder of the utility model.

[0020] In the figure: 1, cylinder; 2, pneumatic control valve; 3, laser sensor; 4, PLC; 5, human-computer interaction interface; 6, first air pipe; 7, second air pipe; 8, reflecting plate; 9, transmission cable; 10, sensor support. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] The utility model provides a kind of skin tension length detection device for novel passenger car side skin tensioning equipment embodiment: as Figure 1 As shown in Figure 2 It includes cylinder 1, cylinder 1 is fixed on the cylinder fixed beam in skin tensioning equipment by cylinder fixed support, further include PLC 4, the outside of cylinder 1 is equipped with laser sensor 3, laser sensor 3 and PLC 4 between electric connection, and the position corresponding to laser sensor 3 on the piston rod of cylinder 1 is equipped with reflecting plate 8;

[0023] Before tensioning, first the piston rod of cylinder 1 is connected with the skin clamping mechanism in tensioning equipment, and tensioning force is applied to skin clamping mechanism, while the heater in tensioning equipment carries out heating to skin, and after tensioning start, laser sensor 3 will identify the initial position of reflecting plate 8 after first tensioning at normal temperature in tensioning process, and identification signal is transmitted to PLC 4, while PLC 4 will identify this time as relative 0 point, after heater starts, along with the change of heating temperature, cylinder 1 continues to pressurize tensioning, according to the principle of thermal expansion and contraction, skin is continuously lengthened in the process of temperature rise, until skin is tensioned to reach the data requirement of 7 per thousand, skin tensioning equipment heating is automatically stopped, and audible and visual alarm is reminded to welding personnel to carry out welding operation, and in the process of tensioning, reflecting plate 8 also moves synchronously with the piston rod of cylinder 1, laser sensor 3 also monitors the position of reflecting plate 8, to monitor tensioning length, realize the purpose of data acquisition, and the detection accuracy of laser sensor 3 will be higher, and detection accuracy can reach 0.1 millimeter, and the precision of repeated error is less than 0.1 millimeter, so even if the tensioning amount of skin of 10m long vehicle is only 7 millimeters, laser sensor 3 can also accurately detect, guarantee the accuracy of entire tensioning work, while laser sensor 3 adopts fully enclosed high-temperature-resistant structure, so it can effectively guarantee the stability and safety of detection data.

[0024] As shown in Figure 1 As shown in Figure 2As shown, the pneumatic control valve 2 is connected with the cylinder 1 through two first air pipes 6, and connected with an external air source through a second air pipe 7.

[0025] The pneumatic control valve 2 is electrically connected with the PLC 4, and the transmission cable 9 is arranged between the pneumatic control valve 2 and the PLC 4 and between the laser sensor 3 and the PLC 4, the transmission cable 9 is a high-temperature-resistant shielding cable, which ensures the stability of signal data transmission and the safety and reliability of data, and after the transmission cable 9 transmits the signal detected by the laser sensor 3 to the PLC 4, the PLC 4 can store the data and control the pneumatic control valve 2 to stop when the specified tensioning amount is reached, so as to control the cylinder 1 to continue to act, thereby realizing automatic control of the traditional device relying on experience, improving the skin tensioning quality qualification rate and the traceability of production data.

[0026] As shown in the figure, Figure 2 With Figure 3 As shown, the cylinder body of the cylinder 1 is fixedly connected with a sensor bracket 10, and the laser sensor 3 is fixedly connected to the sensor bracket 10, which ensures the stability of the installation of the laser sensor 3 and avoids shaking or vibration of the laser sensor 3 during tensioning, thereby ensuring the effectiveness of detection and the normal progress of tensioning work.

[0027] As shown in the figure, Figure 1 As shown, the PLC 4 is electrically connected with the human-computer interaction interface 5, can convert the electrical signal received from the laser sensor 3, and transmit the converted result to the human-computer interaction interface 5 for real-time display, so as to facilitate real-time monitoring by the staff, and

[0028] Moreover, before the skin tensioning, the length, width, thickness and tensioning amount of the vehicle model and other parameters can be input on the human-computer interaction interface 5, and the PLC 4 can control the pneumatic control valve 2 according to the input parameters, so as to control the tensioning of the cylinder 1 and accurately tension the skin.

[0029] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A novel skin tension length detection device for a side skin tensioning equipment of a passenger car, comprising a cylinder (1), characterized in that: The PLC (4) is further included, the laser sensor (3) is arranged outside the cylinder (1), the laser sensor (3) is electrically connected with the PLC (4), and the piston rod of the cylinder (1) is provided with a reflecting plate (8) corresponding to the laser sensor (3).

2. The novel side skin tension length detection device for a side skin tensioning apparatus of a passenger vehicle according to claim 1, characterized by: The pneumatic control valve (2) is further included, two first air pipes (6) are connected between the pneumatic control valve (2) and the cylinder (1), and a second air pipe (7) is connected between the pneumatic control valve (2) and an external air source.

3. The novel side skin tension length detecting device for side skin tensioning equipment of a passenger car according to claim 2, characterized in that: The pneumatic control valve (2) is electrically connected with the PLC (4).

4. The novel side skin tension length detecting device for side skin tensioning equipment of a passenger car according to claim 3, characterized in that: Transmission cables (9) are arranged between the pneumatic control valve (2) and the PLC (4) and between the laser sensor (3) and the PLC (4), and the transmission cables (9) are high-temperature-resistant shielding cables.

5. The novel side skin tension length detecting device for side skin tensioning equipment of a passenger car according to claim 1, characterized in that: The sensor support (10) is fixedly connected to the cylinder body of the cylinder (1), and the laser sensor (3) is fixedly connected to the sensor support (10).

6. The novel side skin tension length detecting device for side skin tensioning equipment of a passenger car according to claim 1, characterized in that: The human-computer interaction interface (5) is further included, and the human-computer interaction interface (5) is electrically connected with the PLC (4).

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