Safety limiting tool of spot welding machine

Abstract

The utility model relates to the technical field of spot welding machines, and particularly discloses a spot welding machine safety limiting tool which is characterized in that the spot welding machine safety limiting tool comprises a spot welding machine body, a foot switch body is arranged on one side of the spot welding machine body, a pedal is fixedly arranged on the foot switch body, and a pressing plate is arranged on the pedal and movably connected with the pedal; a plurality of springs are arranged at the lower end of the pressing plate, a pressure sensor is arranged at the end, away from the pressing plate, of each spring, a controller is arranged on one side of each pressure sensor and electrically connected with the pressure sensor, and the controller is electrically connected with the spot welding machine body. The utility model aims to solve the problem that an electric welding machine works immediately when a foot switch of the spot welding machine is stepped by mistake.

Description

Technical Field

[0001] The utility model relates to the technical field of electric welding machines, in particular to a safety limiting tooling for spot welding machines. Background Art

[0002] Spot welders are a common type of welding equipment widely used in the manufacturing industry. However, workers can easily step on a foot switch located on the ground, causing the welder's punch to move downward and potentially crush the worker, posing a safety hazard. Therefore, a safety limiter for spot welders is needed to prevent this. Currently, safety limiters for spot welders primarily utilize the following methods: A mechanical limiter restricts the downward movement of the punch to prevent crushing injuries. This method has the disadvantage of requiring regular maintenance and adjustment, otherwise it may fail. An electronic limiter uses a sensor to detect the punch's position to prevent crushing injuries. This method also has the disadvantages of high cost and the need for specialized personnel for installation and commissioning. A foot switch protective cover encloses the foot switch to prevent accidental stepping. However, this method may interfere with operator operation and requires regular inspection and maintenance.

[0003] The patent number is 201510692536.9, and the patent name is a foot-operated spot welding machine. During use, the foot pedal drives the connecting rod downward, driving the upper spot welding seat downward, and the upper and lower spot welding pens come into contact. A voltmeter is provided to monitor the current level, and a main switch is provided to prevent accidents and quickly cut off the power. However, in the patent, the foot pedal drives the connecting rod to move, and the connecting rod connection usually does not have the elastic properties of a spring, so there may be a lack of buffering effect when the switch is operated. This may cause the switch to move more stiffly, requiring a high level of foot strength from the operator, and may generate a large impact force during operation. The design of the connecting rod connection is relatively fixed, and its length and connection method may limit the installation location and adaptability of the foot switch. In contrast, a spring connection can provide greater flexibility and adapt to different installation requirements and operating environments. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the technical problem solved by the utility model is to provide a spot welding machine safety limit tooling to solve the problem that the electric welder works immediately when the spot welding machine foot switch is accidentally stepped on.

[0005] In order to solve the above problems, the technical solution adopted by the present invention is: a spot welding machine safety limit tooling, characterized in that: it includes a column, the column is provided with a mounting seat, and the mounting seat is fixedly connected to the column; a locking piece is provided on the mounting seat, and the locking piece is cooperated with the mounting seat, and one end of the locking piece is provided with a connecting piece, which is fixedly connected to the locking piece, and the connecting piece is fixedly connected to the guardrail; a detachable protective plate is provided on the guardrail; the guardrail is arranged vertically to the mounting seat, and there is a gap between the guardrail and the mounting seat, and the installation is not fit.

[0006] The beneficial effect of this solution is that by arranging a pressure plate and a spring on the foot switch body and connecting it with a pressure sensor and a controller, the spot welding machine can be prevented from starting immediately when a worker accidentally steps on the pressure plate or the pressure plate moves downward due to external force, thereby improving the safety of the spot welding machine, reducing safety hazards, and having good practicality.

[0007] Furthermore, the pedal is set to be tilted and fixedly connected to the foot switch body. The tilted pedal is more in line with the natural posture of the human foot, making the operator more comfortable when stepping on it and reducing fatigue. The tilted pedal can provide better stepping support, allowing the operator's feet to contact the pedal more stably, reducing slipping or instability.

[0008] Furthermore, anti-slip stripes are provided around the pressure plate. The anti-slip stripes can increase the friction between the pressure plate and the operator's feet, prevent the feet from sliding when stepping, and improve the stability and safety of the operation. Good anti-slip performance can enable the operator to control the stepping force and position more accurately, reducing the possibility of misoperation.

[0009] Furthermore, the pressure plate is arranged in a rectangular structure, which is arranged parallel to the pedal. The rectangular pressure plate can evenly distribute pressure when stepping on it, ensuring that the pressure sensor can accurately detect pressure changes and improve the accuracy and reliability of control. The parallel arrangement of the pressure plate and pedal can provide a more stable operating platform, allowing the operator to step more smoothly and reduce shaking and instability.

[0010] Furthermore, two anti-stepping frames are provided on the pedal, which are arranged in parallel on both sides of the lower end of the pedal. The anti-stepping frames can serve as physical barriers to reduce the possibility of accidentally stepping on areas outside the pedal and reduce the risk of misoperation. The anti-stepping frames can help the operator find the pedal position more accurately and improve the consistency and accuracy of the operation.

[0011] Furthermore, when the upper end of the pressure plate is level with the anti-slip stripes, the pressure sensor transmits an electrical signal to the controller. When the pressure plate and the anti-slip stripes are level, the pressure sensor can more accurately measure the pressure applied to the pedal. This helps ensure that the signal received by the controller matches the actual pressure, enabling more precise control. By transmitting the electrical signal only when the pressure plate and the anti-slip stripes are level, the possibility of false triggering is reduced. The signal is only triggered when the operator actually steps on the pedal and applies pressure, avoiding false operation caused by slight touches or other interference.

[0012] Furthermore, a cavity is formed between the foot switch body and the pedal, and the controller, pressure sensor and spring are all arranged in the cavity. The cavity can provide a certain degree of protection to prevent the controller, pressure sensor and spring from being affected by external physical damage, dust, moisture and other factors, thereby extending their service life. Placing these components in the cavity can reduce the impact of external electromagnetic interference on them and improve the stability and accuracy of the signal. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 It is a structural diagram of the utility model;

[0015] Figure 3 It is a structural diagram of the utility model; DETAILED DESCRIPTION

[0016] The following is further described in detail through specific implementation methods:

[0017] The reference numerals in the drawings of the specification include: spot welding machine body 1, spot welding head 2, foot switch body 3, anti-pedal plate 4, anti-slip stripes 5, pressure plate 6, cavity 7, tilt plate 8, pressure sensor 9, and controller 10.

[0018] Example 1 is basically as shown in the attached Figure 1-3As shown: the spot welding machine safety limit tooling includes a spot welding machine body, a foot switch body is arranged on one side of the spot welding machine body, an inclined pedal is arranged on the foot switch body, the pedal is fixedly connected to the foot switch body, a pressure plate is arranged on the pedal, the pressure plate is arranged in a rectangular structure, the pressure plate is arranged parallel to the pedal, and the pressure plate and the pedal are movably connected, a cavity is formed after a fixed chain structure is formed between the pedal and the foot switch body, a controller is arranged in the cavity, the controller is electrically connected to the welding machine body, a pressure sensor is arranged on one side of the controller, and the pressure sensor is connected to the controller The device is electrically connected, and multiple springs are provided on the pressure sensor. The end of the spring away from the pressure sensor is fixedly connected to the pressure plate on the pedal. When in use, when the upper end surface of the pressure plate and the anti-slip stripe are at the same horizontal plane, the pressure sensor transmits an electrical signal to the controller. Two anti-stepping frames are provided on the pedal. The anti-stepping frames are arranged in parallel on both sides of the lower end of the pedal. The anti-stepping frames can serve as physical barriers to reduce the possibility of accidentally stepping on areas outside the pedal and reduce the risk of misoperation. The anti-stepping frames can help the operator find the pedal stepping position more accurately and improve the consistency and accuracy of the operation.

[0019] Specific implementation: When operating a spot welder, a worker places their foot on a pedal and controls the machine by stepping on a pressure plate. When pressure is applied to the pressure plate, the spring is compressed, and a pressure sensor senses the change in pressure and transmits an electrical signal to a controller. When the upper end of the pressure plate and the anti-slip stripes are level, the pressure sensor transmits an electrical signal to the controller, which then controls the operation of the spot welder, moving the welding head downward to perform spot welding. During this process, the anti-stepping frame prevents the worker from accidentally stepping on areas outside the pedal, ensuring safe operation. Furthermore, the anti-slip stripes increase friction between the pressure plate and the worker's foot, preventing the foot from slipping.

[0020] By using the spot welding machine safety limit fixture, the operational safety of the spot welding machine can be effectively improved, and safety accidents caused by misoperation or other reasons can be avoided.

[0021] The above is only an embodiment of the present invention, and the commonly known specific structures and characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, and these should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection claimed by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. Spot welding machine safety limit tooling, characterized by: The invention comprises a spot welding machine body, a foot switch body is arranged on one side of the spot welding machine body, a pedal is fixedly arranged on the foot switch body, a pressure plate is arranged on the pedal and is movably connected with the pedal, a plurality of springs are arranged at the lower end of the pressure plate, a pressure sensor is arranged at one end of the spring away from the pressure plate, a controller is arranged on one side of the pressure sensor and is electrically connected with the pressure sensor, and the controller is electrically connected with the spot welding machine body.

2. The spot welding machine safety limiter according to claim 1, characterized in that: The pedal is arranged tilted and is fixedly connected to the foot switch body.

3. The spot welding machine safety limiter according to claim 1, characterized in that: Anti-slip stripes are arranged around the pressing plate.

4. The spot welding machine safety limiter according to claim 1, characterized in that: The pressing plate is arranged in a rectangular parallelepiped structure and is arranged parallel to the pedal.

5. The spot welding machine safety limit tooling according to claim 1, characterized in that: The pedal is provided with two anti-stepping frames, which are arranged in parallel at both sides of the lower end of the pedal.

6. The spot welding machine safety limit tooling according to claim 1, characterized in that: When the upper end of the pressure plate and the anti-slip stripes are at the same horizontal plane, the pressure sensor transmits an electrical signal to the controller.

7. The spot welding machine safety limiter according to claim 1, characterized in that: A cavity is formed between the foot switch body and the pedal, and the controller, the pressure sensor and the spring are all arranged in the cavity.

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