Monitoring method and monitoring system for wedge mechanism of stamping die

Abstract

The invention provides a monitoring method and a monitoring system for a wedge mechanism of a stamping die, the wedge mechanism can move from an initial position to a stamping position and simultaneously drive a punch of the stamping die to move so as to punch a stamping part through the punch, and the monitoring method comprises the following steps: acquiring the initial position; a stamping position is obtained; the stroke of the wedge mechanism is obtained based on the initial position and the stamping position; in response to a stroke of the wedge mechanism being less than a first threshold, a first alert is issued, the first threshold being determined based on an empirical value. According to the monitoring method and monitoring system for the wedge mechanism of the stamping die, the stroke of the wedge mechanism of the stamping die is monitored, the alarm is given out when the stroke is smaller than the first threshold value, and therefore the situation that the stroke of movement of the wedge mechanism is insufficient can be found in time; and the situation that punching fails due to the fact that the wedge does not move in place during punching is prevented, the production quality is ensured, and the risk of die damage is reduced.

Description

Technical Field

[0001] The present application relates to the field of stamping technology, and in particular to a monitoring method and system for an inclined wedge mechanism of a stamping die. Background Art

[0002] There are many punching holes on large automobile body parts, which are special holes used to install some key components. In recent years, with the rapid development of the automobile industry, the field of automobile stamping has gradually transitioned from manual lines to fully automated, high-speed servo press lines. The maximum production cycle of parts stamping has reached 17 times / minute, and the blanking line has reached more than 20 times / minute. However, during the punching process of punching holes, the punching wedge of the oil-gas mixing device is easily affected by high-speed impact and other factors and fails. Some parts will have fewer holes or holes that are not completely punched due to the action of the mold. They can only be discovered during the assembly process. Because the car bodies are all painted, it is difficult to guarantee the efficiency, cost, and quality of the whole vehicle for repair, which has a great impact on production quality and even has the risk of damaging the mold and causing the vehicle model to be discontinued. Summary of the invention

[0003] To at least partially solve the above-mentioned problems, according to the first aspect of the present application, an embodiment of the present application provides a monitoring method for an inclined wedge mechanism of a stamping die, wherein the inclined wedge mechanism can move from an initial position to a stamping position, while driving the punch of the stamping die to move, so as to punch the stamping part through the punch, and the monitoring method includes: obtaining the initial position; obtaining the stamping position; obtaining the stroke of the inclined wedge mechanism based on the initial position and the stamping position; in response to the stroke of the inclined wedge mechanism being less than a first threshold value, issuing a first alarm, and the first threshold value is determined based on an empirical value.

[0004] In some embodiments, the monitoring method also includes: obtaining a first time point at which the inclined wedge mechanism starts to move from an initial position to a stamping position; obtaining a second time point at which the inclined wedge mechanism reaches the stamping position; obtaining the time required for the inclined wedge mechanism to complete the stroke based on the first time point and the second time point; and issuing a second alarm in response to the time required for the inclined wedge mechanism to complete the stroke being greater than a second threshold value, wherein the second threshold value is determined based on an empirical value.

[0005] In some embodiments, an analog sensor is provided behind the cam mechanism along the direction in which the cam mechanism moves from the initial position to the punching position; the stroke of the cam mechanism and the time required to complete the stroke are acquired through the analog sensor.

[0006] In some embodiments, multiple positions on the same surface of the wedge mechanism are monitored by analog sensors to obtain the time required for the multiple positions to complete their respective strokes; in response to the different times required for the multiple positions to complete their respective strokes, a third alarm is issued.

[0007] According to the second aspect of the present application, an embodiment of the present application also provides a monitoring system for a wedge mechanism of a stamping die, which is used to execute the method provided in any embodiment of the first aspect of the present application, and the system includes: an analog sensor, which is arranged behind the wedge mechanism along the direction in which the wedge mechanism moves from an initial position to a stamping position; a processor, which is connected to the analog sensor; and an alarm, which is connected to the processor.

[0008] In some embodiments, the analog quantity sensor includes a transmitting end and a receiving end, the transmitting end is used to transmit a sensing signal to the inclined wedge mechanism, and the receiving end is used to receive the sensing signal reflected by the inclined wedge mechanism.

[0009] In some embodiments, the analog quantity sensor is a laser sensor.

[0010] In some embodiments, the monitoring system further includes a transmitting device, which is disposed on the stamping die, the analog quantity sensor is connected to the transmitting device, and the transmitting device is wirelessly connected to the processor.

[0011] In some embodiments, the monitoring system further includes a display device, which is connected to the processor and is used to display alarm information.

[0012] In some embodiments, there are multiple analog sensors, and the multiple analog sensors are respectively arranged corresponding to the multiple inclined wedge mechanisms.

[0013] The monitoring method and monitoring system of the cam mechanism for a stamping die provided in the embodiment of the present application monitor the stroke of the cam mechanism of the stamping die and issue an alarm when the stroke is less than the first threshold value, so as to timely discover the situation that the stroke of the cam mechanism is insufficient, prevent the punching failure caused by the cam movement not being in place during punching, ensure the production quality, and reduce the risk of damaging the die. In a preferred embodiment, while monitoring the stroke, the time required for the cam mechanism to complete the stroke is monitored to avoid the situation that the oil-gas mixture cylinder driving the cam mechanism to move slowly leaks and causes the cam mechanism to move. The stamping die can be predictively maintained in advance, further reducing the probability of quality problems in punching and ensuring production quality. In a preferred embodiment, while monitoring the stroke and the time required for the cam mechanism to complete the stroke, the time required for different parts of the cam mechanism to complete the stroke is further monitored. It can be monitored that the gap caused by wear makes the two sides of the cam mechanism unable to move synchronously into place, and the stamping die can be predictively maintained in advance, further reducing the probability of quality problems in punching and ensuring production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0015] Figure 1 is a schematic diagram of a monitoring system for an inclined wedge mechanism of a stamping die provided in an embodiment of the present application;

[0016] Figure 2 It is a schematic diagram of a partial structure of a monitoring system for an inclined wedge mechanism of a stamping die provided in an embodiment of the present application.

[0017] The reference numerals are as follows:

[0018] 1. Display device; 2. Processor; 3. Power supply; 4. Analog sensor; 410. Transmitter; 420. Receiver; 5. Wedge mechanism; 510. Stamping part; 520. Punch; 530. Positioning guide.

[0019] It should be understood that the size of each part shown in the accompanying drawings is not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0020] The technical scheme of the preferred embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection claimed in the present application.

[0021] The words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] Combination Figure 1 and Figure 2According to the first aspect of the present application, an embodiment of the present application provides a monitoring method for an inclined wedge mechanism of a stamping die, wherein the inclined wedge mechanism 5 can move from an initial position to a stamping position, and at the same time drive the punch 520 of the stamping die to move, so as to punch a stamping part 510 through the punch 520, and the monitoring method includes: obtaining an initial position; obtaining a stamping position; obtaining a stroke of the inclined wedge mechanism 5 based on the initial position and the stamping position; in response to the stroke of the inclined wedge mechanism 5 being less than a first threshold, issuing a first alarm, and the first threshold is determined based on an empirical value. The inclined wedge mechanism 5 is a mechanical mechanism that uses the principle of an inclined plane to realize the relative movement of two components, and its main function is to convert vertical movement into horizontal movement or inclined movement through the coordinated use of an inclined wedge and a slider. During the stamping process, the inclined wedge mechanism 5 causes the punch 520 of the die to produce the required movement through the sliding of the inclined wedge, thereby realizing the stamping forming of the material. The inclined wedge mechanism 5 can be driven by an oil-gas mixed cylinder. In this embodiment, the initial position refers to the position of the cam mechanism 5 after the stamping action is completed and reset, and the stamping position refers to the position of the cam mechanism 5 when the punch 520 is driven by the cam mechanism 5 to complete the stamping and begin to prepare to return to the initial position, which is an extreme position of the movement of the cam mechanism. The first threshold value can be determined based on empirical values. For example, the stroke of the cam mechanism 5 that can normally complete the stamping work when the stamping action is completed can be collected multiple times, and then the average value is taken to obtain the first threshold value. In this embodiment, the first alarm can be a sound or light alarm to remind the monitoring personnel in time.

[0023] The monitoring method of the inclined wedge mechanism for a stamping die provided in an embodiment of the present application monitors the stroke of the inclined wedge mechanism 5 of the stamping die and issues an alarm when the stroke is less than a first threshold value, thereby being able to promptly detect insufficient stroke of the inclined wedge mechanism 5, thereby preventing punching failure caused by inadequate movement of the inclined wedge during punching, thereby ensuring production quality and reducing the risk of damaging the die.

[0024] In some embodiments, the monitoring method further includes: obtaining a first time point when the cam mechanism 5 starts to move from the initial position to the stamping position; obtaining a second time point when the cam mechanism 5 reaches the stamping position; obtaining the time required for the cam mechanism 5 to complete the stroke based on the first time point and the second time point; in response to the time required for the cam mechanism 5 to complete the stroke being greater than a second threshold, issuing a second alarm, the second threshold being determined based on an empirical value. In this embodiment, the time required for the cam mechanism 5 to complete the stroke is monitored while monitoring the stroke, so as to avoid the situation where the oil-gas mixture cylinder driving the movement of the cam mechanism 5 is slowly leaking and causing the movement of the cam mechanism 5 to be delayed, and the stamping die can be predictively maintained in advance, further reducing the probability of quality problems, ensuring production quality, and avoiding technical blind spots caused by single monitoring. Specifically, when the time required for the cam mechanism 5 to complete the stroke is long, it is very likely that the oil-gas mixture cylinder will have internal air intake due to leakage. Since the gas volume is easily compressed, the time required for the cam mechanism 5 to complete the stroke is longer. At this time, the oil-gas mixture cylinder can be predictively maintained to avoid problems with punching and flow into the subsequent process, causing greater losses.

[0025] In some embodiments, an analog sensor 4 is provided behind the inclined wedge mechanism 5 along the direction in which the inclined wedge mechanism 5 moves from the initial position to the stamping position; the stroke of the inclined wedge mechanism 5 and the time required to complete the stroke are obtained through the analog sensor 4. The analog sensor 4 is a sensor that converts a non-electrical quantity to be measured into an analog electrical signal, and its output signal is continuously changing, usually in the form of voltage, current or resistance to represent the magnitude of the measured parameter. In this embodiment, the measurement is performed by the analog sensor 4, which has the characteristics of high precision and high sensitivity, and can collect continuously changing data. By way of example, the analog sensor 4 in this embodiment can be a laser sensor, and the stroke displacement can reach an accuracy of 0.01 mm, and the stroke time is calculated through stroke feedback.

[0026] In some embodiments, multiple positions on the same surface of the slanted wedge mechanism 5 are monitored by analog sensors 4 to obtain the time required for multiple positions to complete their respective strokes; in response to the different time required for multiple positions to complete their respective strokes, a third alarm is issued. The action of the slanted wedge mechanism 5 is boosted by the oil-gas mixed cylinder, and the slanted wedge guide is realized by the pressure plate and the positioning guide plates 530 on both sides and below. The pressure plate is made of copper material and has a certain guide gap. The slanted wedge relies on the pressure plate and the positioning guide plates 530 on both sides and the positioning guide plates 530 below to work in multiple directions during the up and down movement. The inventor of this application found that after the slanted wedge mechanism 5 has been working for a long time, the pressure plate and the guide plate below the mold will be worn to a certain extent, and the gap will be enlarged to a certain extent, resulting in the inability of the slanted wedge to effectively guide and position around during the working process, resulting in the phenomenon of inconsistent left and right forward punching, resulting in deviations in the time required for the left and right sides to complete the stroke. During the punching process, the punching speed of one side due to uneven force is slower than that of the other side, but the phenomenon of consistent stroke can still be ensured after punching, but there is a hidden danger of causing punching defects. Therefore, in this embodiment, by monitoring multiple positions on the same surface of the wedge mechanism 5, the above phenomenon can be detected in time to perform preventive maintenance, thereby preventing punching problems from flowing into subsequent processes and causing greater losses.

[0027] According to the second aspect of the present application, the embodiment of the present application also provides a monitoring system for the wedge mechanism 5 of the stamping die, which is used to execute the method provided by any embodiment of the first aspect of the present application, and the system includes: an analog sensor 4, which is arranged behind the wedge mechanism 5 along the direction of the wedge mechanism 5 moving from the initial position to the stamping position; a processor 2, which is connected to the analog sensor 4; and an alarm, which is connected to the processor 2. In this embodiment, the analog sensor 4 can collect displacement and time data of the wedge mechanism 5, the processor 2 can process the data collected by the analog sensor 4, and determine whether an alarm signal needs to be issued, and the alarm can issue an audible and visual alarm according to the alarm signal generated by the processor 2. The analog sensor 4 can be connected to the power supply 3, and the power supply 3 can supply power to the analog sensor 4.

[0028] In some embodiments, the analog quantity sensor 4 includes a transmitting end 410 and a receiving end 420, wherein the transmitting end 410 is used to transmit a sensing signal to the angular wedge mechanism 5, and the receiving end 420 is used to receive the sensing signal reflected by the angular wedge mechanism 5. Exemplarily, the analog quantity sensor 4 may be a laser sensor, and the sensing signal may be a laser. The analog quantity sensor 4 may obtain the position of the angular wedge mechanism 5 through the sensing signal and record the time corresponding to the position.

[0029] In some embodiments, the monitoring system further comprises a transmitter, which is arranged on the stamping die, the analog quantity sensor 4 is connected to the transmitter, and the transmitter is wirelessly connected to the processor 2. In this embodiment, the transmitter arranged on the stamping die is wirelessly connected to the processor 2, making the system more concise.

[0030] In some embodiments, the monitoring system further includes a display device 1, which is connected to the processor 2 and is used to display alarm information. In this embodiment, the display device 1 can present alarm information containing more details, which is convenient for operators to judge the existing hidden dangers.

[0031] In some embodiments, there are multiple analog sensors 4, and the multiple analog sensors 4 are respectively arranged corresponding to the multiple wedge mechanisms 5. In this embodiment, multiple sensors are used to simultaneously monitor the multiple wedge mechanisms 5 on the stamping die, so as to more comprehensively control the operation status of the die.

[0032] In the actual operation of the monitoring system, the analog sensor 4 sends a signal through the transmitting end and receives the signal through the receiving end. After the relevant information is processed by the processor 2, it is displayed in real time on the display device 1 to judge the position and motion state of the wedge mechanism 5. If it is within the threshold, the green light on the corresponding panel will be on, otherwise the red light will be on. The system can track and monitor 8 moving parts at the same time.

[0033] Based on the above-mentioned embodiments of the present application, in the absence of explicit negation or conflict, the technical features of one embodiment may be beneficially combined with one or more other embodiments.

[0034] Although some specific embodiments of the present application have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are only for illustration and not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A monitoring method for an inclined wedge mechanism of a stamping die, wherein the inclined wedge mechanism can move from an initial position to a stamping position and simultaneously drive a punch of the stamping die to move so as to punch a stamping part through the punch, characterized in that: The method comprises: Obtaining the initial position; Obtaining the stamping position; Obtaining a stroke of the cam mechanism based on the initial position and the punching position; In response to a stroke of the cam mechanism being smaller than a first threshold, a first alarm is issued, wherein the first threshold is determined based on an empirical value.

2. The method according to claim 1, characterized in that Also includes: Acquire a first time point at which the wedge mechanism starts to move from the initial position to the stamping position; Acquire a second time point at which the wedge mechanism reaches the stamping position; Acquire the time required for the cam mechanism to complete the stroke based on the first time point and the second time point; In response to the time required for the cam mechanism to complete the stroke being greater than a second threshold, a second alarm is issued, wherein the second threshold is determined based on an empirical value.

3. The method according to claim 2, characterized in that An analog quantity sensor is arranged behind the cam mechanism along the direction in which the cam mechanism moves from the initial position to the punching position; The stroke of the cam mechanism and the time required to complete the stroke are acquired through the analog quantity sensor.

4. The method according to claim 3, characterized in that Monitoring multiple positions on the same surface of the wedge mechanism by the analog sensor to obtain the time required for the multiple positions to complete their respective strokes; In response to the plurality of locations taking different amounts of time to complete their respective trips, a third alarm is issued.

5. A monitoring system for a wedge mechanism of a stamping die, used to perform the method according to any one of claims 1 to 4, characterized in that: include: An analog quantity sensor is arranged behind the cam mechanism along the direction in which the cam mechanism moves from the initial position to the punching position; A processor, wherein the processor is connected to the analog quantity sensor; An alarm is connected to the processor.

6. The monitoring system according to claim 5, characterized in that: The analog quantity sensor includes a transmitting end and a receiving end. The transmitting end is used to transmit a sensing signal to the inclined wedge mechanism, and the receiving end is used to receive the sensing signal reflected by the inclined wedge mechanism.

7. The monitoring system according to claim 6, characterized in that: The analog quantity sensor is a laser sensor.

8. The monitoring system according to claim 5, characterized in that: It also includes a transmitting device, which is arranged on the stamping die, the analog quantity sensor is connected to the transmitting device, and the transmitting device is wirelessly connected to the processor.

9. The monitoring system according to claim 5, characterized in that: It also includes a display device, which is connected to the processor and is used to display alarm information.

10. The monitoring system according to claim 5, characterized in that: There are a plurality of analog quantity sensors, and the plurality of analog quantity sensors are respectively arranged corresponding to the plurality of inclined wedge mechanisms.

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