Roller positioning device and method

Abstract

The application discloses a roller positioning device and relates to the technical field of knife plate processing. The roller positioning device comprises a conveying roller, sliding seats arranged on both sides of the conveying roller along the conveying direction of the conveying roller, a driving device for driving the sliding seats to move along the conveying direction of the conveying roller, and a pair of light electric switches fixedly installed on the sliding seats, wherein the second pair of light electric switches is located behind the first pair of light electric switches along the conveying direction of the conveying roller. The pair of light electric switches is arranged to make the parking position of the knife plate exactly located at the center of the truss grab, thereby ensuring the accuracy of the parking position of the knife plate in the material preparation area, greatly reducing the failure rate of the equipment, effectively reducing the participation of manual work, greatly improving the production efficiency, and improving the yield and benefits.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of knife plate processing, in particular to a roller positioning device and method. BACKGROUND

[0002] In the production process of knife plates, whenever a knife plate needs to be produced and enters the preparation area, the two-axis truss will quickly and accurately place the knife plate from the preparation area to the machine tool required for production by means of its precise control system. The implementation of this technology greatly improves production efficiency and reduces the complexity of manual operation, bringing significant optimization effects to the production line of the Jinrun intelligent manufacturing plant.

[0003] However, despite the great convenience this technology brings to production, it also faces some challenges. Because knife plates come in various models and lengths, and their parking positions in the preparation area are not always located at the center of the truss grab, this may cause the knife plate to fall or collide with the machine tool during the grabbing process. These problems not only affect the normal operation of the production line, but also pose a threat to the safety and stability of the production line. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a roller positioning device and method.

[0005] To solve the above technical problems, the technical solution of the present application is as follows:

[0006] A roller positioning device, comprising:

[0007] A conveying roller for conveying knife plates;

[0008] Sliding seats arranged on both sides of the conveying roller and sliding along the conveying direction of the conveying roller;

[0009] A driving device for driving the sliding seats to move along the conveying direction of the conveying roller;

[0010] And a pair of photoelectric switches fixedly installed on the sliding seat, the pair of photoelectric switches comprising a first pair of photoelectric switches and a second pair of photoelectric switches;

[0011] Wherein, along the conveying direction of the conveying roller, the second pair of photoelectric switches is located behind the first pair of photoelectric switches.

[0012] As a preferred solution of the roller positioning device of the present application, wherein: the pair of photoelectric switches further comprises a third pair of photoelectric switches, and along the conveying direction of the conveying roller, the third pair of photoelectric switches is located behind the second pair of photoelectric switches.

[0013] As a preferred scheme of the roller positioning device, the device further comprises a first proximity switch fixedly arranged on one side of the conveying roller and located at the initial position of the sliding seat.

[0014] As a preferred scheme of the roller positioning device, the device further comprises a second proximity switch fixedly arranged on one side of the conveying roller and located at the limit position of the sliding seat.

[0015] As a preferred scheme of the roller positioning device, the driving device is a servo cylinder.

[0016] The application further provides a roller positioning method, comprising:

[0017] The secondary control system calculates the position information of the blade head according to the length of the incoming line and sends the information to the primary control system;

[0018] The primary control system controls the servo cylinder to drive the sliding seat to move so that the second pair of light barriers is located at the predetermined position to be reached by the blade head.

[0019] The conveying roller starts to convey the blade.

[0020] When the first pair of light barriers detects the blade, the primary control system controls the conveying roller to run at a reduced speed.

[0021] When the second pair of light barriers detects the blade, the primary control system controls the conveying roller to stop running.

[0022] As a preferred scheme of the roller positioning method, after the primary control system controls the servo cylinder to drive the sliding seat to move so that the second pair of light barriers is located at the predetermined position to be reached by the blade head, the method further comprises:

[0023] The servo position is compared to determine whether the error between the position of the second pair of light barriers and the predetermined position to be reached by the blade head is less than or equal to 10 mm, and if yes, the next step is performed, and if no, the servo cylinder is controlled to drive the sliding seat to move to the initial position, and then the sliding seat is moved again until the error between the position of the second pair of light barriers and the predetermined position to be reached by the blade head is less than or equal to 10 mm.

[0024] As a preferred scheme of the roller positioning method, after the primary control system controls the conveying roller to stop running when the second pair of light barriers detects the blade, the method further comprises:

[0025] When the third pair of light barriers detects the blade, the primary control system controls the alarm to alarm.

[0026] The beneficial effects of the present application are:

[0027] (1) The present application sets up the pair of light electric switch, according to the signal control of different pair of light electric switch, the deceleration or stop of conveying roller is controlled, the parking position of the cutter plate is just located in the center of the truss grabbing, the accuracy of the cutter plate parking position in the material preparation area is ensured, not only the failure rate of the equipment is greatly reduced, but also the manual participation is effectively reduced, the production efficiency is greatly improved, the yield and benefit are improved.

[0028] (2) The present application also sets up the third pair of light electric switch, the operation of the alarm is controlled through the signal of the third pair of light electric switch, when the conveying roller and other components fail, it can be known in time, and the operator is reminded to handle and repair in time, so that the large production accident is avoided, and the safety hidden danger is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 The structural schematic diagram of the roller positioning device provided by the present application is shown in the figure.

[0031] Figure 2 The flowchart of the roller positioning method provided by the present application is shown in the figure.

[0032] Wherein: 1, conveying roller; 2, sliding seat; 3, first pair of light electric switch; 4, second pair of light electric switch; 5, third pair of light electric switch. DETAILED DESCRIPTION

[0033] In order to make the content of the present application more easily and clearly understood, the present application will be further described in detail according to the specific embodiments and in combination with the drawings.

[0034] Figure 1 The structural schematic diagram of the roller positioning device provided by the present application is shown in the figure. The device includes conveying roller 1, sliding seat 2, driving device and pair of light electric switch. Among them, the pair of light electric switch is fixedly installed on the sliding seat 2. The driving device can drive the sliding seat 2 to move along the conveying direction of the conveying roller 1, and then control the conveying roller 1 to decelerate and stop through the signal of the pair of light electric switch, so as to ensure that the parking position of the cutter plate is located in the center of the truss grabbing.

[0035] Specifically, a moving guide rail is fixedly arranged on each side plate on the two sides of the conveying roller 1. The moving guide rail extends along the conveying direction of the conveying roller 1. A sliding seat 2 is slidingly arranged on each moving guide rail. The two sliding seats 2 are oppositely arranged. A driving device for driving the sliding seats 2 to move along the conveying direction of the conveying roller 1 is further fixedly arranged on the conveying roller 1.

[0036] In the embodiment, the driving device is a servo cylinder, which can accurately control the moving distance of the sliding seat 2.

[0037] A pair of light emitting and receiving photoelectric groups are fixedly arranged on the sliding seat 2. Each pair of light emitting and receiving photoelectric groups includes a first pair of light emitting and receiving photoelectric switches 3, a second pair of light emitting and receiving photoelectric switches 4 and a third pair of light emitting and receiving photoelectric switches 5. Each pair of light emitting and receiving photoelectric switches includes a transmitting end and a receiving end, and the transmitting end and the receiving end are arranged on the two sliding seats 2 respectively. Along the conveying direction of the conveying roller 1, the second pair of light emitting and receiving photoelectric switches 4 is located behind the first pair of light emitting and receiving photoelectric switches 3, and the third pair of light emitting and receiving photoelectric switches 5 is located behind the second pair of light emitting and receiving photoelectric switches 4. When each pair of light emitting and receiving photoelectric switches detects an object, a signal is immediately transmitted to a control end.

[0038] It should be noted that during the movement of the two sliding seats 2 along the moving guide rail, the transmitting end and the receiving end of each pair of light emitting and receiving photoelectric switches are always aligned.

[0039] In addition, a first proximity switch and a second proximity switch are further fixedly arranged on the conveying roller 1. The first proximity switch is located at the conveying position of the sliding seat 2. The second proximity switch is located at the limit position of the movement of the sliding seat 2.

[0040] In the embodiment, the first proximity switch and the second proximity switch are arranged at the two ends of the conveying direction of the conveying roller 1 respectively.

[0041] Referring to Figure 2 The embodiment of the application further provides a roller positioning method, which includes steps S101-S105, and the specific steps are as follows:

[0042] In step S101, a secondary control system calculates the position information of the head of a blade plate according to the length of a feeding line, and sends the position information to a primary control system.

[0043] Specifically, the secondary control system in industrial automation can obtain the length information of the blade plate according to the length of the feeding line, and then obtain the position to which the head of the blade plate needs to reach on the conveying roller 1 through calculation, so as to ensure that the parking position of the blade plate is located at the center of the truss grabbing, thereby ensuring the stability of the truss grabbing the blade plate.

[0044] After the secondary control system calculates the position information to which the head of the blade plate needs to reach, the secondary control system sends the position information to the primary control system.

[0045] Step S102: The primary control system controls the servo cylinder to drive the sliding seat 2 to move, so that the second pair of light barriers 4 is located at the predetermined position to be reached by the head of the blade plate.

[0046] Specifically, the primary control system, i.e., the PLC control system, controls the servo cylinder to operate, drives the sliding seat 2 to move, and makes the second pair of light barriers 4 on the sliding seat 2 located at the predetermined position to be reached by the head of the blade plate calculated in the above step S101.

[0047] It should be noted that after the sliding seat 2 is moved to the position, servo position comparison needs to be performed to determine whether the error between the position of the second pair of light barriers 4 and the predetermined position to be reached by the head of the blade plate is less than or equal to 10 mm. If yes, the next step is performed; if no, the servo cylinder is first controlled to drive the sliding seat 2 to move to the initial position, and then the servo cylinder is controlled to drive the sliding seat 2 to move to the predetermined position to be reached by the head of the blade plate again, until the error between the position of the second pair of light barriers 4 and the predetermined position to be reached by the head of the blade plate is less than or equal to 10 mm.

[0048] Step S103: The conveying roller 1 starts to convey the blade plate.

[0049] It should be noted that at this time, the conveying roller 1 runs at high speed to improve the conveying efficiency of the blade plate.

[0050] Step S104: When the first pair of light barriers 3 detects the blade plate, the primary control system controls the conveying roller 1 to run at a reduced speed.

[0051] Specifically, when the head position of the blade plate reaches the position of the first pair of light barriers 3, the detection light beam of the first pair of light barriers 3 is blocked by the head of the blade plate. At this time, the first pair of light barriers 3 immediately transmits a signal to the primary control system. The primary control system, i.e., the PLC control system, immediately controls the conveying roller 1 to run at a reduced speed.

[0052] It can be understood that at this time, the PLC control system controls the conveying roller 1 to run at a reduced speed, which can greatly reduce the moving speed of the blade plate, thereby reducing the inertia of the movement of the blade plate, and facilitating the blade plate to stay at the predetermined position when the conveying roller 1 stops running.

[0053] Step S105: When the second pair of light barriers 4 detects the blade plate, the primary control system controls the conveying roller 1 to stop running.

[0054] Specifically, when the head position of the blade plate reaches the position of the second pair of light barriers 4, the detection light beam of the second pair of light barriers 4 is blocked by the head of the blade plate. At this time, the second pair of light barriers 4 immediately transmits a signal to the primary control system. The primary control system immediately controls the conveying roller 1 to stop running.

[0055] It can be understood that, since the running speed of the conveying roller 1 has been reduced in the previous step, the knife plate will be directly stopped at the current position after the conveying roller 1 stops running. At this time, the parking position of the knife plate is just located at the center of the truss grabbing. Then the truss grabbing instruction can be issued.

[0056] Step S106: When the third pair of light barriers 5 detects the knife plate, the primary control system controls the alarm to alarm.

[0057] Specifically, if the conveying roller 1 and other components fail, causing the second pair of light barriers 4 to detect the knife plate when the conveying roller 1 has not stopped running, the knife plate will continue to move forward. When the head position of the knife plate reaches the position of the third pair of light barriers 5, the third pair of light barriers 5 immediately transmits a signal to the primary control system, and the primary control system immediately controls the alarm to alarm, reminding the operator to handle and repair in time.

[0058] After the knife plate positioning is completed, the primary control system will control the servo cylinder to move the sliding seat 2 to the initial position, and then perform knife plate grabbing.

[0059] Therefore, the technical scheme of the present application can ensure the accuracy of the parking position of the knife plate in the preparation area, not only greatly reducing the failure rate of the equipment, but also effectively reducing the participation of manual labor, greatly improving the production efficiency, and improving the yield and benefits.

[0060] In addition to the above embodiments, the present application can also have other implementation manners; any technical scheme formed by equivalent replacement or equivalent transformation falls within the protection scope required by the present application.

Claims

1. A method of roll positioning, characterized by: It is based on a roller positioning device, which comprises: A conveying roller (1) for conveying the blade plate; A sliding seat (2) slidingly arranged on both sides of the conveying roller (1) along the conveying direction of the conveying roller (1); A driving device for driving the sliding seat (2) to move along the conveying direction of the conveying roller (1); And a pair of photoelectric switches fixedly installed on the sliding seat (2), which comprises a first pair of photoelectric switches (3), a second pair of photoelectric switches (4) and a third pair of photoelectric switches (5); Wherein, along the conveying direction of the conveying roller (1), the second pair of photoelectric switches (4) is located behind the first pair of photoelectric switches (3), and the third pair of photoelectric switches (5) is located behind the second pair of photoelectric switches (4); It also includes a first proximity switch and a second proximity switch, the first proximity switch is fixedly arranged on one side of the conveying roller (1) and located at the initial position of the sliding seat (2), and the second proximity switch is fixedly arranged on one side of the conveying roller (1) and located at the limit position of the sliding seat (2); The roller positioning method comprises: The secondary control system calculates the position information of the blade plate head according to the incoming line scanning length and sends it to the primary control system; The primary control system controls the servo cylinder to drive the sliding seat (2) to move, so that the second pair of photoelectric switches (4) is located at the predetermined position reached by the blade plate head, and the servo position is compared to judge whether the error between the position of the second pair of photoelectric switches (4) and the predetermined position reached by the blade plate head is less than or equal to 10mm, if yes, the next step is carried out, if not, the servo cylinder is controlled to drive the sliding seat (2) to move to the initial position, and then move again, until the error between the position of the second pair of photoelectric switches (4) and the predetermined position reached by the blade plate head is less than or equal to 10mm; The conveying roller (1) starts to convey the blade plate; When the first pair of photoelectric switches (3) detects the blade plate, the primary control system controls the conveying roller (1) to run at a reduced speed; When the second pair of photoelectric switches (4) detects the blade plate, the primary control system controls the conveying roller (1) to stop running; When the third pair of photoelectric switches (5) detects the blade plate, the primary control system controls the alarm to alarm.

2. The roll positioning method of claim 1, wherein: The driving device is a servo cylinder.

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