Steel strip flattening bridge guide and conveying control method

Abstract

The present application relates to the technical fields of plate straightening, and provides a steel strip straightening bridge guiding device and a conveying control method, which is provided with a bridge A section, a bridge B section and a bridge C section, the steel strip enters the bridge B section to produce natural sag, then reaches a narrow limiting column, the narrow limiting column limits the activity range of the steel strip, so that the steel strip always moves within the range that can be detected by the photoelectric sensing device. The bridge B section has a layer of rib to reduce the contact area between the steel strip and the bridge B section, thereby reducing the resistance of the steel strip when climbing in the bridge B section, when the steel strip enters the bridge C section, a transition guide plate makes the steel strip climb upward, when the steel strip is in the bridge C section, the steel strip will be raised upward, and in this process, the baffle presses the steel strip downward to make it smoothly enter the punch. The present application is provided with a plurality of pairs of photoelectric sensors, which can detect whether the speed of the steel strip entering the punch is appropriate, and if not, the production rhythm can be changed to make the feeding speed area stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of plate straightening technology, and particularly relates to a steel strip straightening overbridge guide device and a conveying control method. BACKGROUND

[0002] In order to facilitate transportation, steel materials are usually made into steel strips and stored in the form of coils, which results in a variety of original curvatures. In processing such steel strips, a multi-roller straightening and pressing method is generally used to generate alternating bending deformation to eliminate the unevenness of the original curvature, and then the straightening is gradually performed.

[0003] After straightening, the steel strip enters a punch for stamping. A guide device needs to be arranged in the movement process of the steel strip from the straightening machine to the punch. Due to the mismatching of the action rates of the straightening machine and the punch, the steel strip is often accumulated or conveyed too slowly, which affects the processing efficiency. Therefore, the overbridge guide device needs to be designed to reduce the above-mentioned situation and reduce the safety hazard. SUMMARY

[0004] To solve the problems in the background art, the present application provides a steel strip straightening overbridge guide device, which comprises an overbridge A section, an overbridge B section and an overbridge C section, wherein:

[0005] The overbridge A section and the overbridge C section have the same structure, and the overbridge A section and the overbridge C section are symmetrically installed on both sides of the overbridge B section.

[0006] The overbridge A section and the overbridge C section have arc surface structures.

[0007] The overbridge B section is composed of inclined surface structures on both sides and a flat surface structure in the middle.

[0008] The arc surface structures of the overbridge A section and the overbridge C section are respectively connected with the inclined surface structures on both sides of the overbridge B section.

[0009] The included angle between the inclined surface structures and the flat surface structure of the overbridge B section is obtuse.

[0010] In the preferred scheme, a narrow limit column is installed on the flat surface structure of the overbridge B section, and the narrow limit column is composed of two vertical columns with a distance greater than the width of the steel strip.

[0011] In the preferred scheme, a baffle for height limiting is installed above the overbridge C section.

[0012] In the preferred scheme, a transition guide plate is arranged at the connection between the arc surface structure of the overbridge C section and the inclined surface structure of the overbridge B section.

[0013] In the preferred scheme, a rib is arranged in the middle of the overbridge B section.

[0014] In a preferred solution, the inclined surface structure on both sides of the bridge B section is provided with a strip-shaped hole along the steel belt conveying direction.

[0015] In a preferred solution, a first pair of light emitting photoelectric sensors are installed below the inclined surface structure on both sides of the bridge B section; the two first pair of light emitting photoelectric sensors have consistent installation height; the two first pair of light emitting photoelectric sensors have a transmitting end and a receiving end respectively, and the light emitted by the transmitting end penetrates through the strip-shaped hole to reach the receiving end.

[0016] In a preferred solution, a second pair of light emitting photoelectric sensors are installed below the inclined surface structure on both sides of the bridge B section, and the installation position of the second pair of light emitting photoelectric sensors is higher than that of the first pair of light emitting photoelectric sensors; the two second pair of light emitting photoelectric sensors have consistent installation height; the two second pair of light emitting photoelectric sensors have a transmitting end and a receiving end respectively, and the light emitted by the transmitting end penetrates through the strip-shaped hole to reach the receiving end.

[0017] In a preferred solution, the curved surface structure of the bridge A section and the curved surface structure of the bridge C section are both provided with a strip-shaped hole along the steel belt conveying direction; a third pair of light emitting photoelectric sensors are installed below the curved surface structure of the bridge A section and below the curved surface structure of the bridge C section; the two third pair of light emitting photoelectric sensors have consistent installation height; the two third pair of light emitting photoelectric sensors have a transmitting end and a receiving end respectively, and the light emitted by the transmitting end penetrates through the strip-shaped hole to reach the receiving end.

[0018] A steel belt conveying control method for a leveling machine bridge, which is performed according to the following steps:

[0019] S1, the steel belt leveling bridge guiding device is installed between the leveling machine and the punch, the leveling machine is provided with an inlet roller, a leveling roller and an outlet roller, the inlet roller is provided with an uncoiler at the front end, the outlet roller is installed with a bridge A section at the rear end, the steel belt is unwound from the uncoiler and enters the leveling machine through the inlet roller, is leveled through the leveling roller, and is conveyed to the steel belt leveling bridge guiding device through the outlet roller, and after passing through the bridge A section, the bridge B section and the bridge C section, the steel belt enters the punch for stamping, and then is continuously pulled by the traction mechanism;

[0020] S2, a fourth pair of light emitting photoelectric sensors are installed behind the outlet roller of the leveling machine, the fourth pair of light emitting photoelectric sensors include a transmitting end and a receiving end installed on both sides of the steel belt respectively, when the signal of the fourth pair of light emitting photoelectric sensors is interrupted, the uncoiler, the leveling machine and the punch all work normally; when the signal of the fourth pair of light emitting photoelectric sensors is connected, the uncoiler, the leveling machine and the punch all stop running;

[0021] S3, the third pair of light emitting photoelectric sensors, the second pair of light emitting photoelectric sensors and the first pair of light emitting photoelectric sensors are turned on, when the signals of the third pair of light emitting photoelectric sensors, the second pair of light emitting photoelectric sensors and the first pair of light emitting photoelectric sensors are all connected, the uncoiler, the leveling machine and the punch all work normally;

[0022] S4, when the third pair of shot photoelectric sensor signal interruption, the second pair of shot photoelectric sensor, the signal of the first pair of shot photoelectric sensor is all connected, start the arc suspension anomaly early warning, set time threshold ξ, when the duration exceeds ξ, speed up the punch feeding speed until it returns to the state of S3;

[0023] S5, when the third pair of shot photoelectric sensor, the second pair of shot photoelectric sensor signal interruption, the signal of the first pair of shot photoelectric sensor is all connected, start the acceleration state, speed up the punch feeding speed, reduce the uncoiler and leveler discharge speed, until it returns to the state of S3;

[0024] S6, when the third pair of shot photoelectric sensor, the second pair of shot photoelectric sensor, the signal of the first pair of shot photoelectric sensor is all interrupted, the uncoiler, the leveler, the punch stop running, repair and reset the running rate of the uncoiler, the leveler, the punch until it returns to the state of S3.

[0025] The beneficial effects of the present application are:

[0026] First, the present application sets up the overbridge A section, the overbridge B section, the overbridge C section, the steel belt slides down along the overbridge A section after being flattened by the straightening machine, since the straightening machine is always in working state in this process, at this time the steel belt will further climb forward, the steel belt reaches the overbridge B section and will have a natural sag, and then reaches the narrow column, this device can limit the activity range of the steel belt, so that the steel belt always moves in the range that can be detected by the photoelectric sensing device.

[0027] Second, the overbridge B section has a layer of rib, which reduces the contact area of the steel belt and the overbridge B section, thereby reducing the resistance of the steel belt when climbing in the B section, when the steel belt enters the overbridge C, there is a transition guide plate to make the steel belt climb upward, when the steel belt is in the overbridge C, the steel belt will be raised upward, and in this process, the baffle will press the steel belt down to make it smoothly enter the punch.

[0028] Third, the present application sets up a plurality of pairs of shot photoelectric sensors, which can detect whether the speed of the steel belt entering the punch is appropriate, and if not, the production rhythm can be changed to make the feeding speed area smooth. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is the overall structure schematic diagram of the present application;

[0030] Figure 2 is the left side view structure schematic diagram of Figure 1 ;

[0031] Figure 3 is the structure schematic diagram in use of Figure 1 ;

[0032] Figure 4 is the right side view structure schematic diagram of Figure 3The schematic diagram of the light beam and the arc of the steel belt is shown in the figure;

[0033] Figure 5 The schematic diagram of the partial structure is shown in the figure. Figure 4 The schematic diagram of the partial structure is shown in the figure.

[0034] The figure mark:

[0035] 1, the bridge A section; 2, steel belt; 3, narrow column; 4, the bridge C section; 5, baffle; 6, the bridge B section; 7, the first pair of light beams photoelectric sensor; 8, the second pair of light beams photoelectric sensor; 9, the third pair of light beams photoelectric sensor; 10, the flattening machine; 101, the feeding roller; 102, the flattening roller; 103, the discharging roller; 104, the fourth pair of light beams photoelectric sensor; 11, the punch; 12, the transition guide plate; 13, the rib; 14, the strip hole; 15, the decoiler; 16, the punch. DETAILED DESCRIPTION

[0036] In order to make the skilled in the art understand the present application, the specific embodiments of the present application are described below in conjunction with the drawings.

[0037] Referring to Figures 1-5 A steel belt flattening bridge guiding device, comprising a bridge A section 1, a bridge B section 6 and a bridge C section 4, wherein: the bridge A section 1 and the bridge C section 4 have the same structure, and the bridge A section 1 and the bridge C section 4 are symmetrically installed on both sides of the bridge B section 6; the bridge A section 1 and the bridge C section 4 have arc surface structures; the bridge B section 6 is composed of inclined surface structures on both sides and a flat surface structure in the middle; the arc surface structures of the bridge A section 1 and the bridge C section 4 are connected with the inclined surface structures on both sides of the bridge B section 6, respectively. The included angle between the inclined surface structures and the flat surface structure of the bridge B section 6 is obtuse.

[0038] A narrow column 3 is installed on the flat surface structure of the bridge B section, and the narrow column 3 is composed of two vertical columns with a distance greater than the width of the steel belt 2. After the steel belt 2 is flattened by the straightening machine, it slides down along the bridge A section 1. Since the straightening machine is always in working state during this process, the steel belt 2 will further climb forward at this time. The steel belt 2 will naturally sag when it reaches the bridge B section 6, and then reaches the narrow column 3. This device can limit the activity range of the steel belt 2, so that the steel belt 2 always moves within the range that can be detected by the photoelectric sensing device.

[0039] A baffle 5 for limiting height is installed above the overpass C section 4. A transition guide plate 12 is arranged at the joint between the curved surface structure of the overpass C section 4 and the inclined surface structure of the overpass B section 6. A rib 13 is arranged in the middle of the overpass B section 6, which reduces the contact area between the steel belt 2 and the overpass B section 6, thereby reducing the resistance of the steel belt 2 when climbing the B section. When the steel belt 2 enters the overpass C section 4, the transition guide plate 12 makes the steel belt 2 climb upward, and the steel belt 2 will be raised upward in the overpass C section 4. During this process, the baffle 5 presses the steel belt 2 down to make it smoothly enter the punch 16.

[0040] The present application provides a plurality of pairs of light-sensing sensors, which can detect whether the speed of the steel belt 2 entering the punch 16 is appropriate. If not, the production rhythm can be changed to make the feeding speed area stable. Specifically, the inclined surface structures on both sides of the overpass B section 6 are provided with strip-shaped holes 14 along the transmission direction of the steel belt 2.

[0041] A first pair of light-sensing sensors 7 is installed below the inclined surface structures on both sides of the overpass B section 6. The two first pairs of light-sensing sensors 7 have the same installation height, and each of the two first pairs of light-sensing sensors 7 has a transmitting end and a receiving end. The light emitted by the transmitting end penetrates through the strip-shaped hole 14 to reach the receiving end.

[0042] A second pair of light-sensing sensors 8 is installed below the inclined surface structures on both sides of the overpass B section 6, and the installation height of the second pair of light-sensing sensors 8 is higher than that of the first pair of light-sensing sensors 7. The two second pairs of light-sensing sensors 8 have the same installation height, and each of the two second pairs of light-sensing sensors 8 has a transmitting end and a receiving end. The light emitted by the transmitting end penetrates through the strip-shaped hole 14 to reach the receiving end.

[0043] The curved surface structure of the overpass A section 1 and the curved surface structure of the overpass C section are each provided with a strip-shaped hole 14 along the transmission direction of the steel belt 2. A third pair of light-sensing sensors 9 is installed below the curved surface structure of the overpass A section 1 and below the curved surface structure of the overpass C section. The two third pairs of light-sensing sensors 9 have the same installation height. Each of the two third pairs of light-sensing sensors 9 has a transmitting end and a receiving end. The light emitted by the transmitting end penetrates through the strip-shaped hole 14 to reach the receiving end.

[0044] In terms of height setting, the distance between the first pair of light-sensing sensors 7 and the highest point of the curved surface structure of the overpass A section 1 is about 50 cm. The distance between the second pair of light-sensing sensors 8 and the highest point of the curved surface structure of the overpass A section 1 is about 30 cm. The distance between the third pair of light-sensing sensors 9 and the highest point of the curved surface structure of the overpass A section 1 is about 15 cm.

[0045] If the signal emitted by the transmitting end of the light-sensing sensor is blocked by the steel belt, the receiving end cannot receive the signal. If it is not blocked, the receiving end can receive the signal. In this way, the sagging degree of the steel belt in the overpass B section can be determined.

[0046] In use, S1, the steel strip 2 flattening over-bridge guide is installed between the flattening machine 10 and the punch 16, the flattening machine 10 is provided with an inlet roller 101, a flattening roller 102 and an outlet roller 103, the front end of the inlet roller 101 is provided with an uncoiler 15, the rear end of the outlet roller 103 is installed with an over-bridge A section 1, the steel strip 2 is unwound by the uncoiler 15 and then enters the flattening machine 10 through the inlet roller 101, is flattened by the flattening roller 102 and then is conveyed to the steel strip 2 flattening over-bridge guide through the outlet roller 103, after passing through the over-bridge A section 1, the over-bridge B section 6 and the over-bridge C section 4 respectively, enters the punch 16 for stamping, and then the steel strip 2 is continuously pulled by a traction mechanism;

[0047] S2, a fourth pair of photoelectric sensors 104 is installed behind the outlet roller 103 of the flattening machine 10, the fourth pair of photoelectric sensors 104 includes a transmitting end and a receiving end installed on both sides of the steel strip 2 respectively, when the signal of the fourth pair of photoelectric sensors 104 is interrupted, the uncoiler 15, the flattening machine 10 and the punch 16 all work normally; when the signal of the fourth pair of photoelectric sensors 104 is connected, the uncoiler 15, the flattening machine 10 and the punch 16 all stop running;

[0048] S3, the third pair of photoelectric sensors 9, the second pair of photoelectric sensors 8 and the first pair of photoelectric sensors 7 are turned on, when the signals of the third pair of photoelectric sensors 9, the second pair of photoelectric sensors 8 and the first pair of photoelectric sensors 7 are all connected, the uncoiler 15, the flattening machine 10 and the punch 16 all work normally;

[0049] S4, when the signal of the third pair of photoelectric sensors 9 is interrupted and the signals of the second pair of photoelectric sensors 8 and the first pair of photoelectric sensors 7 are all connected, an arc suspension abnormality early warning is started, a time threshold ξ is set, when the duration exceeds ξ, the feeding speed of the punch 16 is accelerated until it returns to the state of S3;

[0050] S5, when the signals of the third pair of photoelectric sensors 9 and the second pair of photoelectric sensors 8 are interrupted and the signal of the first pair of photoelectric sensors 7 is connected, an acceleration state is started, the feeding speed of the punch 16 is accelerated, the outlet speed of the uncoiler 15 and the flattening machine 10 is reduced, until it returns to the state of S3;

[0051] S6, when the signals of the third pair of photoelectric sensors 9, the second pair of photoelectric sensors 8 and the first pair of photoelectric sensors 7 are all interrupted, the uncoiler 15, the flattening machine 10 and the punch 16 stop running, and the running rates of the uncoiler 15, the flattening machine 10 and the punch 16 are checked and reset until they return to the state of S3.

[0052] The application detects whether the speed of the steel belt 2 entering the punch 16 is suitable or whether it needs to stop through several pairs of light emitting photoelectric sensors, changes the production rhythm if it is not suitable, makes the feeding speed area smooth, stops and adjusts the operation parameters again if the safety hidden danger is found, and avoids the safety accident.

[0053] The above embodiments of the application do not constitute a limitation on the protection scope of the application. Any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the claims of the application.

Claims

1. A steel strip leveling bridge guide device, characterized in that: It includes Bridge Section A, Bridge Section B, and Bridge Section C, among which: Bridge Section A and Bridge Section C have the same structure and are symmetrically installed on both sides of Bridge Section B. Bridge section A and bridge section C have a curved surface structure; Section B of the bridge consists of inclined structures on both sides and a flat structure in the middle; The curved surface structures of Bridge A and Bridge C are connected to Bridge B by inclined structures on both sides. The angle between the inclined structure and the plane structure of bridge section B is obtuse; a narrowing column is installed on the plane structure of bridge section B, which consists of two columns with a distance greater than the width of the steel belt; the inclined structures on both sides of bridge section B are provided with strip holes along the transmission direction of the steel belt; The first pair-beam photoelectric sensors are installed below the inclined structures on both sides of the bridge section B. The two first pair-beam photoelectric sensors are installed at the same height. The two first pair-beam photoelectric sensors serve as the transmitting end and the receiving end respectively. The light emitted by the transmitting end passes through the strip hole and reaches the receiving end. A second pair of photoelectric sensors is installed below the inclined structure on both sides of the bridge section B. The second pair of photoelectric sensors is installed at a higher position than the first pair of photoelectric sensors. The two second pair of photoelectric sensors are installed at the same height. The two second pair of photoelectric sensors serve as the transmitting end and the receiving end respectively. The light emitted by the transmitting end passes through the strip hole to reach the receiving end. The curved surface structure of bridge section A and the curved surface structure of bridge section C are both provided with strip holes along the transmission direction of the steel belt; a third pair-beaming photoelectric sensor is installed under the curved surface structure of bridge section A and the curved surface structure of bridge section C; the two third pair-beaming photoelectric sensors are installed at the same height; the two third pair-beaming photoelectric sensors are respectively the transmitting end and the receiving end, and the light emitted by the transmitting end passes through the strip holes to reach the receiving end.

2. The steel strip leveling bridge guide device according to claim 1, characterized in that: A baffle for limiting height is installed above section C of the bridge.

3. The steel strip leveling bridge guide device according to claim 1, characterized in that: A transition guide plate is provided at the connection between the arc surface structure of the bridge section C and the inclined surface structure of the bridge section B.

4. The steel strip leveling bridge guide device according to claim 1, characterized in that: Reinforcements are provided in the middle of section B of the bridge.

5. A leveler steel belt bridge conveying control method, characterized in that: The steel strip leveling bridge guide device according to any one of claims 1 to 4 is used and carried out in the following steps: S1. Install the steel strip leveling bridge guide device between the leveling machine and the punch press. The leveling machine is equipped with a feed roller, a leveling roller, and a discharge roller. The front end of the feed roller is equipped with an uncoiler, and the rear end of the discharge roller is equipped with a bridge section A. After being uncoiled by the uncoiler, the steel strip enters the leveling machine via the feed roller. After being leveled by the leveling roller, it is conveyed by the discharge roller to the steel strip leveling bridge guide device. After passing through bridge section A, bridge section B, and bridge section C, it enters the punch press for stamping. After completion, the steel strip is pulled by the traction mechanism and continues to move. S2. A fourth photoelectric sensor is installed behind the discharge roller of the leveler. The fourth photoelectric sensor includes a transmitter and a receiver installed on both sides of the steel strip. When the signal of the fourth photoelectric sensor is interrupted, the uncoiler, leveler and punch press all operate normally; when the signal of the fourth photoelectric sensor is connected, the uncoiler, leveler and punch press all stop operating. S3. Turn on the third, second and first paired photoelectric sensors. When the signals of the third, second and first paired photoelectric sensors are all connected, the uncoiler, leveler and punch press all work normally. S4. When the signal of the third through-beam photoelectric sensor is interrupted and the signals of the second through-beam photoelectric sensor and the first through-beam photoelectric sensor are both connected, the arc abnormality warning is activated and a time threshold ξ is set. When the duration exceeds ξ, the punch feed speed is increased until it returns to the state of S3. S5. When the signals of the third and second through-beam photoelectric sensors are interrupted and the signals of the first through-beam photoelectric sensor are both connected, the acceleration state is started, the punch feeding speed is increased, and the discharge speeds of the uncoiler and leveler are reduced until the state is restored to S3; S6. When the signals of the third, second and first matched photoelectric sensors are interrupted, the uncoiler, leveler and punch press stop running, and the running speeds of the uncoiler, leveler and punch press are overhauled and reset until they are restored to the state of S3.

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