Photoelectric protection device with calibration function for press machine

Abstract

The utility model discloses a photoelectric protection device with calibration for a press machine in the related field of the press machine, which comprises a transmitting end and a receiving end of a photoelectric protector, the transmitting end and the receiving end are respectively arranged on a pair of adjustable brackets, the adjustable brackets are respectively arranged at two ends of a workbench, and an aim point mechanism is arranged on the transmitting end. The transmitting end and the receiving end are installed on the adjustable support, the aim point mechanism is installed on the transmitting end, after the position of the transmitting end is determined according to the GB27607-2011 requirement, the position of the receiving end is adjusted through the aim point mechanism according to the position of the transmitting end, the center of the transmitting end is right opposite to the center of the receiving end, the operation requirement for workers is lowered, and the working efficiency is improved. The calibration speed of the photoelectric protection device is improved, the installation time is shortened, and the photoelectric focusing accuracy and the working stability of the press machine are improved.

Description

Technical Field

[0001] This utility model relates to an optoelectronic calibration device in the field of press machines. Background Technology

[0002] Photoelectric safety protectors are configured with stamping equipment to protect the personal safety of operators and prevent accidents caused by improper operation or machine malfunction during production. Principle: The emitter generates an coded infrared beam, and the receiver receives the corresponding beam; a rectangular protection area is created between the emitter and receiver. When an opaque object enters this area, the corresponding beam is blocked, and the emitter or receiver generates a blocking signal output to the controller (or directly outputs a PNP or NPN transistor signal); the controller ultimately converts the blocking signal into a relay output signal. For presses, the protection height of the photoelectric safety protector should be no less than: machine tool slide stroke + adjustment amount. However, in existing technology, the installation of photoelectric protectors on presses requires visual inspection and experience throughout the process. Since the emitted light is invisible, ensuring the emitter and receiver are perfectly aligned requires experienced professionals. Even experienced workers often adjust by trial and error, affecting installation efficiency. Furthermore, the light emitted by the photoelectric protection device's transmitter has a certain emission angle (EAA < 2.5 / 5, etc.). When the receiver receives upward and downward polarized light, the parallelism between the receiver and transmitter already deviates, but it can still allow the controller to activate its output and protect the press. However, due to the large vibrations during the stamping process, the receiver and transmitter may deviate slightly from each other. This causes the existing deviation to increase, making it possible for the receiver to fail to receive the signal, the controller to stop outputting, and the press to stop, resulting in unstable operation of the press (e.g., ...). Figure 6 (As shown). Utility Model Content

[0003] The purpose of this invention is to provide a photoelectric protection device with calibration for a press, which reduces the operational requirements for workers, increases the calibration speed of the photoelectric protection device, shortens the installation time, and improves the accuracy of photoelectric detection and the stability of the press operation.

[0004] To achieve the above objectives, this utility model provides a photoelectric protection device for a press with calibration, including a transmitter and a receiver of the photoelectric protector. The transmitter and receiver are respectively mounted on a pair of adjustable brackets, which are respectively located at both ends of the worktable. A collimation mechanism is provided on the transmitter.

[0005] Compared with the prior art, the beneficial effects of this utility model are that the transmitter and receiver are mounted on an adjustable bracket, and the collimation mechanism is mounted on the transmitter. According to the requirements of GB27607-2011, after determining the position of the transmitter, the position of the receiver is adjusted by the collimation mechanism according to the position of the transmitter, so that the centers of the transmitter and receiver are aligned. This reduces the operation requirements for workers, improves the calibration speed of the photoelectric protection device, shortens the installation time, and improves the accuracy of photoelectric alignment and the stability of the press operation.

[0006] As a further improvement of this utility model, the collimator mechanism includes a laser line-laying device, which is mounted on the lower part of the transmitting end via a calibration bracket.

[0007] By installing the laser line emitter at the bottom of the transmitter, the laser line emitter will emit a cross laser line. After the cross laser line hits the receiver, the position of the receiver is adjusted so that the cross laser line is finally in the center of the receiver. This makes it easy and convenient to align the receiver and transmitter directly opposite each other.

[0008] As a further improvement of this utility model, the calibration bracket includes a mounting plate, and elastic cards are provided at both ends of the mounting plate, with soft rubber sleeves provided on the elastic cards.

[0009] In this way, the mounting plate is inserted into the lower part of the transmitter by a flexible clip. The soft rubber sleeve can prevent the flexible clip from scratching the transmitter and also increase friction, so that the laser line feeder can be stably installed on the transmitter. Moreover, this installation method is simple and quick.

[0010] As a further improvement of this utility model, the adjustable bracket includes a fixed bracket, a rotating shaft is inserted into the middle of the fixed bracket, the rotating shaft is connected to the vertical rod through a connecting rod, and the opening of the fixed bracket is sealed and fixed by bolts.

[0011] After inserting the rotating shaft into the fixed bracket, rotate the rotating shaft, which in turn drives the vertical rod to rotate through the connecting rod. Adjust the distance between the vertical rod and the worktable according to national standards. After determining the distance, seal the opening of the fixed bracket with bolts so that the rotating shaft cannot rotate.

[0012] As a further improvement of this utility model, the vertical rod is a round tube, the transmitting end is connected to the round tube at one end of the workbench through an O-type tube clamp, and the receiving end is connected to the round tube at the other end of the workbench through an O-type tube clamp.

[0013] In this way, the transmitter and receiver are fixed to the round tube with O-ring clamps. After adjusting the positions of the transmitter and receiver, the O-ring clamps are tightened and fixed to the round tube with screws, thereby fixing the positions of the transmitter and receiver. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the alignment mechanism of this utility model.

[0016] Figure 3 This is a schematic diagram of the fixed card holder structure of this utility model.

[0017] Figure 4 for Figure 1 A magnified view of a portion of point A in the middle.

[0018] Figure 5 This is a diagram showing the effect after calibration of this utility model.

[0019] Figure 6 This is an image showing the effect of existing technology that has not been calibrated.

[0020] Among them, 1 is the press, 2 is the transmitter, 3 is the vertical rod, 4 is the O-type pipe clamp, 5 is the receiver, 6 is the connecting rod, 7 is the worktable, 8 is the laser line feeder, 9 is the soft rubber sleeve, 10 is the elastic card, 11 is the mounting plate, 12 is the fixed card seat, 13 is the opening, 14 is the socket, and 15 is the rotating shaft. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] like Figure 1-5 The photoelectric protection device with calibration shown includes a transmitter and a receiver of the photoelectric protector. The transmitter and receiver are respectively mounted on a pair of adjustable brackets, which are respectively set at both ends of the worktable. The transmitter is provided with a collimation mechanism.

[0023] The collimator mechanism includes a laser line-laying device, which is mounted on the lower part of the transmitter via a calibration bracket. The calibration bracket includes a mounting plate with elastic clips at both ends, and soft rubber sleeves on the elastic clips.

[0024] The adjustable bracket includes a fixed bracket with a rotating shaft inserted in the middle. The rotating shaft is connected to a vertical rod via a connecting rod, and the opening of the fixed bracket is sealed with bolts. The vertical rod is a round tube. The transmitting end is connected to the round tube at one end of the worktable via an O-type tube clamp, and the receiving end is connected to the round tube at the other end of the worktable via an O-type tube clamp.

[0025] During operation, install the mounting brackets on the left and right sides of the front of the machine's worktable. Insert the rotating shaft into the round hole of the mounting bracket, and tighten the screw at the opening of the mounting bracket halfway to ensure that the rotating shaft can still rotate. Then, secure the transmitter of the photoelectric protector to the vertical rod using O-ring clamps, and tighten the screws of the O-ring clamps halfway as well to ensure that the transmitter can rotate around the vertical rod. Next, connect the laser line reader to the lower part of the transmitter through the calibration bracket. The laser line reader can be secured to the mounting plate of the calibration bracket with screws, ensuring that the center of the laser line reader is aligned with the center of the calibration bracket. The calibration bracket has a soft rubber sleeve at the tail end to ensure that the calibration bracket does not scratch the transmitter after the photoelectric protector is inserted. Similarly, install the receiver of the photoelectric protector on another adjustable bracket.

[0026] According to GB27607-2011 requirements, calculate the distance between the transmitter and the worktable. Then, rotate the shaft to adjust the distance between the vertical rod and the worktable. Tighten the screws at the opening of the fixing bracket to fix the shaft. Next, rotate the O-ring clamp to adjust the angle of the transmitter so that the emission direction of the transmitter is parallel to the worktable. Press the switch of the laser line feeder. The laser line feeder emits a cross laser. At this time, rotate the shaft of the adjustable bracket where the receiver is located so that the cross laser hits the lower part of the receiver. Then, tighten the screws at the opening of the fixing bracket to close it, thus fixing the shaft. Fine-tune the O-ring clamp of the receiver to adjust the angle of the receiver so that the cross laser line is located at the center of the lower part of the receiver. This indicates that the transmitter and receiver of the photoelectric protector are successfully aligned. Tighten the screws on the O-ring clamp of the receiver. Now the positions of the receiver and transmitter of the photoelectric protector are fixed, and the two output signals of the photoelectric protector controller are connected to protect the operating area of ​​the press.

[0027] Because the transmitter and receiver of the photoelectric protector are aligned and calibrated by a cross laser, even if the press is working and there is a slight offset due to vibration, the receiver can still receive the signal from the transmitter, so that the controller can continue to output and the press can work stably.

[0028] This invention uses a laser line-finding instrument for calibration, eliminating the need for visual and empirical methods and reducing the operational requirements for workers. Moreover, since the cross laser line is visually visible, it increases the calibration speed of the photoelectric protector and shortens the installation time. It also improves the accuracy of the photoelectric protector in terms of light, ensuring the stability of the press operation.

[0029] This utility model is not limited to the above embodiments. Based on the technical solutions disclosed herein, those skilled in the art can make some substitutions and modifications to some of the technical features without creative labor, and these substitutions and modifications are all within the protection scope of this utility model.

Claims

1. A photoelectric protection device for calibrating a press belt, comprising a transmitting end and a receiving end of a photoelectric protector, characterized in that: The transmitting end and the receiving end are respectively installed on a pair of adjustable supports, which are respectively arranged at two ends of the workbench.

2. A photoelectric protection device with calibration of a press according to claim 1, characterized in that: The centering mechanism comprises a laser line laser, which is installed on the lower part of the transmitting end through a calibration support.

3. A photoelectric protection device with calibration of a press band according to claim 2, characterized in that: The calibration support comprises a mounting plate, the two ends of which are provided with elastic clamps, and the elastic clamps are provided with soft rubber sleeves.

4. A photoelectric protection device with calibration of a press according to claim 3, characterized in that: The adjustable support comprises a fixed clasp, the middle part of which is inserted with a rotating shaft, the rotating shaft is connected with a vertical rod through a connecting rod, and the opening of the fixed clasp is fixed through a bolt.

5. A photoelectric protection device with calibration of a press according to claim 4, characterized in that: The vertical rod is a circular tube, the transmitting end is connected with the circular tube at one end of the workbench through an O-shaped tube clamp, and the receiving end is connected with the circular tube at the other end of the workbench through an O-shaped tube clamp.

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