Pipe fitting in-place detection device based on weighing sensor

Abstract

The invention relates to a pipe fitting in-place detection device based on a weighing sensor, which monitors the weight change of a bearing platform in real time through a high-precision weighing sensor, judges whether a pipe fitting is in place or not, and can replace a traditional positioning sensor in situ. The device comprises a mechanical positioning mechanism, a signal processing unit and a multiple judgment system, solves the technical problem that the actual placement state cannot be detected due to the fact that a traditional positioning sensor detection mode is easily influenced by the material, color and the like of the pipe fitting, and is particularly suitable for accurate positioning detection of the metal pipe fitting in an automatic production line.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial automation detection, and in particular to a pipe in-place detection device based on a weighing sensor. Background Art

[0002] Weighing sensors are mainly based on a variety of physical effects to achieve weight measurement conversion. In manufacturing fields such as automobile manufacturing, mechanical processing, and electronic equipment production, weighing sensors are widely used in raw material batching, parts processing, and product assembly. They are generally only used for accurate weight measurement and have not been used for pipe positioning detection in industrial manufacturing.

[0003] Currently, known methods for detecting pipe in-placement use photoelectric sensors or mechanical limit switches, mainly capacitive sensors and photoelectric sensors. When a pipe approaches, the change in capacitance or the blocking of light is used to determine whether the pipe is in place. However, the material and color of many pipes themselves are not sufficient to cause the sensor capacitance or light to change, making it impossible to determine whether the pipe is in place. Summary of the Invention

[0004] In order to overcome the problem that the material and color of many objects in existing capacitive or photoelectric sensors are not sufficient to change the sensor capacitance or light, making it impossible to judge whether the pipe is in place, the present invention creates an in-place detection device based on a weighing sensor. It uses a high-precision weighing sensor to monitor the weight changes caused by loading in real time, and combines it with a dynamic threshold algorithm to realize pipe in-place detection, so as to judge whether the pipe is in place. It has the advantages of being unaffected by the material and color of the pipe and accurate in judgment and positioning. It can replace the traditional positioning sensor in situ to realize a new type of incoming material in-place detection device.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions:

[0006] The weighing sensor is installed at the blocking position to enable accurate positioning by force feedback when the pipe approaches, avoiding the influence of the material and color of the incoming material on the judgment of the capacitive sensor and the photoelectric sensor, thereby greatly improving the compatibility of the measured pipe and the positioning accuracy.

[0007] With the cooperation of pipe fittings, load cells, machine body, columns, material retaining cylinders, and load cell mounting plates, pipe fittings can be accurately detected for position. Pipe fittings of any material or color enter the equipment through a set entrance, come into contact with the load cell, and experience a weight change. This weight change is fed back to the pressure digital display, which uses the set numerical range to detect whether the pipe fitting is in place. When the weight display exceeds the set numerical range, the material retaining cylinder receives a signal and rises, thereby driving the load cell and load cell mounting plate to rise, completing the detection of the pipe fitting in place. At this point, the equipment control system records the position information and initiates the subsequent processing steps to ensure production efficiency and accuracy.

[0008] In summary, the present invention includes at least one of the following beneficial technical effects:

[0009] 1. The in-place detection device based on the embodiment of the present application is not restricted by the material and appearance of the pipe fittings, which can avoid the influence of the material and color when the pipe fittings are in place, improve the compatibility of the pipe fittings, and has a simple and reliable structure.

[0010] 2. The in-place detection device based on the embodiment of the present application can accurately detect whether the pipe is in place and replace the positioning sensor in situ to ensure production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 A schematic diagram of the structure provided in an embodiment of the present application;

[0012] Figure 2 A structural diagram of the detection component provided in an embodiment of the present application in a non-detection state;

[0013] Figure 3 This is a structural diagram of the detection component provided in the embodiment of the present application in the detection state;

[0014] Figure 4 This is a structural diagram of the detection mechanism provided in an embodiment of the present application when the inspection is completed.

[0015] Reference numerals in the figure: 1, pipe fitting; 2, weighing sensor; 3, machine body; 4, column; 5, material-blocking cylinder; 6, weighing sensor mounting plate. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below with reference to the accompanying drawings:

[0017] Reference Figure 1-4 The present invention discloses a pipe fitting in place detection device based on a weighing sensor, comprising: a column 4 is installed on a body 3, for supporting and placing a material blocking cylinder 5 and a weighing sensor mounting plate 6, a weighing sensor 2 is placed under the weighing sensor mounting plate 6, and the pipe fitting 1 is detected in place through the device composed of the above.

[0018] The implementation principle of the above embodiment is as follows: First, place the pipe 1 to the entrance of the device to contact the weighing sensor 2. The measured electronic scale has a compression of only 0.05mm under a pressure of 10kg; while for ordinary top materials, the force generally does not exceed 1kg, and the compression can be ignored. When the pipe 1 reaches the weighing sensor 2, a weight change occurs, and the weighing sensor 2 sends a signal to the PLC to determine whether it is in place. When the weight change setting display value exceeds 0.1kg, it means that the pipe 1 is in place, the PLC outputs a signal, the material blocking cylinder 5 rises to drive the weighing sensor mounting plate 6 to move, and the pipe 1 continues to perform subsequent actions. The body 3 and the column 4 serve as the device structure, providing stable support to ensure the reliability of the detection process.

[0019] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A pipe fitting in place detection device based on a weighing sensor, characterized in that: include: The weighing sensor 2 is used to detect the weight change of the pipe 1 in real time; the body 3 and the column 4 are used to fix the weighing sensor 2 and support the pipe 1; the material blocking cylinder 5 and the weighing sensor mounting plate 6 are used to receive prompts and perform subsequent actions when the pipe is in place.

2. The pipe fitting in place detection device according to claim 1, characterized in that: The weighing sensor 2 is a strain gauge sensor, a piezoelectric sensor or a capacitive sensor, and is installed at a supporting point or a suspension point of the pipe conveying path.

3. The pipe fitting in place detection device according to claim 1, characterized in that: The device is part of the automation equipment and realizes the automatic linkage control of pipe transportation.

4. The pipe in-place detection device according to claim 1, characterized in that: A weight threshold range is preset. Pipe 1 enters the device from the left and contacts weighing sensor 2, causing a weight change. When the detected weight value exceeds 0.1kg, pipe 1 is determined to be in place, the PLC outputs a signal, the centering clamp is clamped, the material blocking cylinder 5 rises, driving the weighing sensor mounting plate 6 to rise, and pipe 1 performs subsequent actions.

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