Collaborative tail pushing device for fixed-length shear and control method of collaborative tail pushing device

Abstract

The invention provides a cooperative tail pushing device for fixed-length shears and a control method of the cooperative tail pushing device, and relates to the technical field of large rolling shear equipment for wide and thick plates in the metallurgical industry. Each tail pushing device comprises a hydraulic cylinder, a swing arm mechanism, a push plate mechanism, a connecting rod mechanism, a spring mechanism and a positioning detection system. The hydraulic cylinder drives the swing arm mechanism to drive the connecting rod mechanism and the spring mechanism to act together, so that the push plate mechanism pushes the tailing steel plate to fall into the waste collecting device. The external contour of the tailing steel plate is recognized through the positioning detection system, the number of the groups of the tail pushing devices is judged according to the size data, cooperative steel pushing of the multiple groups of tail pushing devices is achieved, redundant equipment is prevented from being put into work, and energy conservation and consumption reduction are embodied; a plurality of groups of tail pushing devices are directly mounted on the fixed-length shear front panel, so that transverse movement is avoided to adapt to the width of a tailing steel plate, the equipment structure is simplified, the cost input is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of large-scale rolling shear equipment for wide and thick plates in the metallurgical industry, and in particular to a coordinated tail-pushing device for cut-to-length shears and a control method thereof. Background Art

[0002] As a key equipment of rolling-cut cut-to-length shears, the tail pushing device is usually arranged in the finishing area of ​​the wide and thick plate production workshop. It is mainly used to push the tail steel plates after cut-to-length shearing so that they can fall smoothly into the waste collection device.

[0003] When the cut-to-length shear performs head shearing and cut-to-length shearing on the steel plates transported by the roller conveyor, a section of tailing steel plates of different widths and irregular shapes is usually left behind, which needs to be pushed away from the cut-to-length shear equipment in time and dropped into the waste collection device to facilitate the smooth shearing of subsequent steel plates. Since this section of tailing steel plates has completely escaped the external force of the transport roller conveyor, if it is not pushed away from the shear in time, when the next steel plate is transported, the two steel plates will be superimposed. When the cut-to-length shear shears the superimposed steel plates, it will cause safety hazards such as shear blade breakage. In addition, since the tailing steel plates are of irregular shape, under the inertial impact of the subsequent belt speed steel plates, the tailing steel plates will be pushed off-center, causing steel jamming accidents.

[0004] In order to solve the potential safety hazards and steel jamming accidents during the shearing process of the cut-to-length shear, it is necessary to install a tail-pushing device on the cut-to-length shear equipment. The tail-pushing device drives the push plate to slowly push the tail steel plate away from the cut-to-length shear, and smoothly drop it into the waste transport device for timely removal. At present, there are two main structures of the tail-pushing device: 1. The tail-pushing device is arranged on the front clamping roller of the cut-to-length shear; 2. The tail-pushing device is arranged on the front panel of the cut-to-length shear, and adopts an overall centralized tail-pushing structure on both sides. The structural types of these two tail-pushing devices have the following shortcomings:

[0005] The tail pusher is arranged on the pinch roller: when pushing tail steel plates of different widths, it is necessary to adjust the lateral movement of the pinch roller to ensure that the tail pusher adapts to the width of the tail steel plate. On the one hand, the pinch roller needs to move left and right along the width of the tail steel plate, which reduces the work efficiency. On the other hand, the pinch roller is a redundant component of the cut-to-length shear, and a control system is required to assist in completing the lateral movement function, which invisibly increases the cost investment.

[0006] The overall centralized tail-pushing structure on both sides: a set of lifting and pushing mechanisms is set on each side of the tail-pushing device, and the two sets of lifting and pushing mechanisms are connected by a push plate to realize the pushing effect on the tail steel plate as a whole. When pushing the whole piece of tail steel plate, on the one hand, two sets of lifting and pushing mechanisms need to be driven synchronously, and there are mechanical jams to varying degrees, which will affect the service life of the equipment and make it difficult to realize the function. On the other hand, a copper slide plate is set at the bottom of the push plate mechanism, and there is sliding friction between it and the roller cover plate, which can easily lead to increased wear of the copper slide plate. There is a gap between the worn copper slide plate and the roller cover plate. When pushing the tail steel plate, the push plate is prone to tilt, causing uneven force and affecting the stability of the equipment.

[0007] A split tail pushing device for cut-to-length shearing was developed, which adopted a multi-group coordinated control method to solve the technical problems existing in the prior art, such as low efficiency of pushing tail steel plates, asynchronous jamming of the mechanism and poor working stability. Summary of the invention

[0008] According to the above technical problems that the existing two types of tail pushing devices have low efficiency and jamming, a coordinated tail pushing device for cut-to-length shearing and a control method thereof are provided. The present invention mainly adopts coordinated regulation of multiple groups of tail pushing devices, thereby eliminating the jamming phenomenon of the tail pushing devices on both sides of the prior art under the centralized driving mode, so as to achieve the purpose of improving the tail pushing work efficiency.

[0009] The technical means adopted by the present invention are as follows:

[0010] A coordinated tail-pushing device for a cut-to-length shear comprises a plurality of groups of independently driven split tail-pushing devices arranged on the cut-to-length shear, each group of the tail-pushing devices comprising a hydraulic cylinder, a swing arm mechanism, a push plate mechanism, a connecting rod mechanism, a spring mechanism, and a positioning detection system; the hydraulic cylinder drives the swing arm mechanism to drive the connecting rod mechanism and the spring mechanism to work together, so that the push plate mechanism pushes the tail steel plate to fall into a waste collection device;

[0011] The positioning detection system includes a base, a bracket, a proximity switch, a first sensing plate, a second sensing plate, and a contour detector;

[0012] The base is welded to the front panel of the cut-to-length shear, the bracket is fastened to the base by bolts, the bracket is installed with a proximity switch, the induction plate one and the induction plate two are welded on the upper and lower sides of the load-bearing plate respectively, and the contour detector is installed on the left side of the front panel of the cut-to-length shear and the steel plate transportation entrance side, which is used to detect the outer contour and size length of the tail steel plate to determine the number of tail pushing device groups that will eventually be put into the steel pushing work.

[0013] Furthermore, the tail pushing device also includes a hydraulic cylinder tail positioning device for positioning the hinge point of the hydraulic cylinder;

[0014] The hydraulic cylinder tail positioning device includes a support, a positioning pin, a pin shaft 1, and a baffle. A pin hole matching the positioning pin is processed on the bottom plate of the support. The positioning pin passes through the pin hole to fasten the support to the front panel of the cut-to-length shear. The support is connected to the hydraulic cylinder, and the axial positioning of the pin shaft 1 is achieved through the baffle and the bolt.

[0015] The hydraulic cylinder is a driving mechanism of the tail push device. The hydraulic cylinder includes a hydraulic cylinder tail and a hydraulic cylinder head. The hydraulic cylinder tail is connected to the support through a pin shaft, and the hydraulic cylinder head is connected to the swing arm mechanism.

[0016] Furthermore, the tail pushing device also includes a swing arm hinge point positioning device connected to the swing arm mechanism through a hinge shaft, and the swing arm hinge point positioning device is used to position the hinge point of the swing arm mechanism;

[0017] The swing arm hinge point positioning device includes a bearing seat 1, a bearing seat 2, a pressure cover 1, a bearing, and a pressure cover 2; the bearing seat 1 and the bearing seat 2 are respectively fastened to the front panel of the cut-to-length shear by bolts, bearings are respectively installed between the bearing seat 1, the bearing seat 2 and the hinge shaft, and axial positioning is achieved between the bearing seat 1 and the pressure cover 2, and between the bearing seat 2 and the pressure cover 1 by bolts.

[0018] Furthermore, the push plate mechanism includes a connecting frame, a push plate, a spacer, a pin, a third pressure cover, a roller bearing, a screw, a pin, and a first sleeve; the left side of the connecting frame is positioned with the push plate by a pin, and is fixed by two screws; the two ends of the connecting frame are respectively connected with two pins, and roller bearings are respectively installed at both ends of the pins, and the inner side of the roller bearing and the outer side of the connecting frame are positioned by a spacer, and the outer side of the roller bearing is axially positioned by the boss of the pin, the third pressure cover and the bolt;

[0019] The bottom of the roller bearing is lower than the lower surface of the push plate by a distance h, and the value of h is 3mm to 5mm. A hole is processed in the middle of the connecting frame and a sleeve 1 is installed. The sleeve 1 is connected to the connecting rod mechanism through a pin shaft 3.

[0020] Further, the connecting rod mechanism includes a connecting rod, a third pin, a fourth pin, and a second sleeve;

[0021] The left side of the connecting rod is connected to the push plate mechanism through the pin shaft three, the right side of the connecting rod is processed with a round hole and the shaft sleeve two is installed, the shaft sleeve two is connected to the connecting rod mechanism through the pin shaft four, the ends of the pin shaft three and the pin shaft four are axially positioned by the baffle plate and the bolt, and the middle upper part of the connecting rod is connected to the spring mechanism through the pin shaft six;

[0022] The spring mechanism comprises a pin shaft five, a washer one, a stud, a large nut, a pin shaft six, and a telescopic spring;

[0023] One end of the stud is processed with a thread, and after the stud passes through the washer 1, the thread of the stud is screwed into the threaded hole of the pin shaft 6;

[0024] An axial hole is processed in the middle of the pin shaft five, and washers are arranged on both sides of the axial hole of the pin shaft five. The top of the stud passes through the telescopic spring, washer one, and pin shaft five in sequence, and then a large nut is installed to fix it with the swing arm mechanism.

[0025] Furthermore, the swing arm mechanism includes a hinge shaft, a load-bearing plate, a rib plate, a vertical plate, an annular plate, an ear plate, a round steel plate, a side rib plate, and a second pin shaft;

[0026] The swing arm mechanism is a direct drive mechanism of the hydraulic cylinder. Two bearing plates are welded near the shaft head of the hinge shaft. Ear plates and annular plates are welded to the upper parts of the two bearing plates respectively. A circular hole 1 is provided on the ear plate and the annular plate. The circular hole 1 is connected to the head of the hydraulic cylinder through a pin 2. A rib plate is welded between the two bearing plates. An elliptical hole is machined on the rib plate. The left side of the rib plate is welded to the shaft body of the hinge shaft, and the right side of the rib plate is welded to the side rib plate. A vertical plate is welded to the upper part of the rib plate, between the two bearing plates and the two ear plates.

[0027] Two round steel plates are welded on the inner side of the bearing plate at the bottom of the elliptical hole, and round holes two are processed on the round steel plates respectively. The round holes two are connected to the spring mechanism through pin shaft five; round holes three are processed on the right side of the two bearing plates, and the round holes three are connected to the connecting rod mechanism through pin shaft four.

[0028] Furthermore, the tail pushing device also includes a chain mechanism, which includes chain hook 1, a chain, and chain hook 2. The two ends of the chain are respectively connected to chain hook 1 and chain hook 2. Chain hook 1 is connected to pin shaft 1, and chain hook 2 is connected to pin shaft 4.

[0029] The present invention also provides a control method for a coordinated tail-pushing device for cut-to-length shearing, comprising: the tail-pushing device drives a swing arm mechanism through a hydraulic cylinder telescopically to realize the lifting and translation of a push plate mechanism, so that the push plate mechanism has two workstations, a steel pushing position and an unloading position, and the positioning function of the two workstations is realized by a positioning detection system.

[0030] Furthermore, the steel pushing control method of the tail pushing device includes:

[0031] Step 1: The push plate mechanism is in the unloading position. At this time, the second induction plate of the positioning detection system coincides with the proximity switch above, the piston rod of the hydraulic cylinder is in the retracted state and is in the minimum stroke position, the swing arm mechanism, the push plate mechanism, the connecting rod mechanism, and the spring mechanism are all in the highest position, and the spring mechanism is in a naturally straight state;

[0032] The second step is to determine whether there are tailings of steel plates. The contour detector arranged on the left side of the cut-to-length shear scans the shearing area of ​​the cut-to-length shear to determine whether there are tailings of steel plates. If there are no tailings of steel plates, the hydraulic cylinder continues to maintain the current position. If tailings of steel plates are found, proceed to the next step.

[0033] The third step is to identify the shape of the tail steel plate and determine the number of tail pushing devices to be put into operation. The contour detector performs contour identification and size extraction on the tail steel plate, and determines the number of tail pushing devices to be put into operation based on the external contour and size data of the tail steel plate, so as to achieve coordinated steel pushing of multiple tail pushing devices.

[0034] Step 4: Start the steel pushing preparation work. The piston rod of the hydraulic cylinder extends, driving the swing arm mechanism to rotate clockwise around the swing arm hinge positioning device, and at the same time drives the connecting rod mechanism and the spring mechanism to move together. Under the joint action of the connecting rod mechanism and the spring mechanism, the push plate mechanism reaches the steel pushing position;

[0035] Step 5: Determine whether the steel push position has been reached. The contour detector arranged on the left side of the cut-to-length shear scans the shearing area of ​​the cut-to-length shear to determine whether the push plate mechanism has reached the steel push position. If it has not reached the steel push position, repeat the previous step; if it has reached the steel push position, proceed to the next step.

[0036] Step 6. Push the tail steel plate away from the cut-to-length area. At this time, the induction plate 1 of the positioning detection system coincides with the proximity switch below, and the piston rod of the hydraulic cylinder is in an extended state and is in the maximum stroke position. Under the driving force provided by the hydraulic system and the inertia force of each mechanism, the left side of the push plate of the push plate mechanism pushes the tail steel plate away from the cut-to-length table and smoothly falls into the waste collection device.

[0037] At this point, the steel pushing control method of the entire tail pushing device ends and enters the next steel pushing working cycle.

[0038] Furthermore, the unloading control method of the tail pusher device includes:

[0039] Step 1: The push plate mechanism is in the steel pushing position. At this time, the induction plate 1 of the positioning detection system coincides with the proximity switch below, the piston rod of the hydraulic cylinder is in an extended state and is in the maximum stroke position, and the swing arm mechanism, push plate mechanism, connecting rod mechanism, and spring mechanism are all in the lowest position;

[0040] The second step is to determine whether there are tailings of steel plates. The contour detector arranged on the left side of the cut-to-length shear scans the shearing area of ​​the cut-to-length shear to determine whether there are tailings of steel plates. If there are tailings of steel plates, the push plate mechanism pushes the tailings of steel plates away from the cut-to-length shearing area and smoothly falls into the waste collection device. If there are no tailings of steel plates, proceed to the next step.

[0041] Step 3: Start the unloading preparation work. The piston rod of the hydraulic cylinder retracts, driving the swing arm mechanism to rotate counterclockwise around the swing arm hinge positioning device, and driving the connecting rod mechanism and the spring mechanism to move together. Under the joint action of the connecting rod mechanism and the spring mechanism, the push plate mechanism reaches the unloading position;

[0042] Step 4: Determine whether the unloading position has been reached. The contour detector arranged on the left side of the cut-to-length shear scans the shearing area of ​​the cut-to-length shear to determine whether there is a push plate mechanism at the steel pushing position. If there is a push plate mechanism, repeat the previous step; if there is no push plate mechanism, proceed to the next step.

[0043] Step 5: The tail pusher reaches the unloading position. At this time, the second induction plate of the positioning detection system coincides with the proximity switch above, and the piston rod of the hydraulic cylinder is retracted and in the minimum stroke position. The swing arm mechanism, push plate mechanism, connecting rod mechanism, and spring mechanism are all in the highest position, and the spring mechanism is in a naturally straightened state;

[0044] At this point, the unloading control method of the entire tail pusher device ends and enters the next unloading work cycle.

[0045] Compared with the prior art, the present invention has the following advantages:

[0046] 1. The technology has more energy-saving and consumption-reducing characteristics: the present invention identifies the outer contour of the tail steel plate through the positioning detection system, and determines the number of tail pushing devices to be put into use according to the size data, thereby realizing the coordinated pushing of steel by multiple groups of tail pushing devices, avoiding the use of redundant equipment, and embodying energy saving and consumption reduction.

[0047] 2. Simplify the equipment structure and improve work efficiency: The present invention directly installs multiple sets of tail pushing devices on the front panel of the cut-to-length shear, avoiding lateral movement to adapt to the width of the tail steel plate, simplifying the equipment structure, reducing cost investment, and improving work efficiency.

[0048] 3. Improved structural type and enhanced safety performance: The invention designs a separately driven split tail pusher device, which eliminates the jamming phenomenon of the centralized drive mechanism on both sides, increases the service life, and reduces the difficulty of regulation. The rolling friction of the roller bearing replaces the sliding friction of the traditional technology, eliminating the hidden danger of uneven force and improving safety and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0050] Figure 1 It is a schematic diagram of the arrangement of the cooperative tail thrust device of the present invention.

[0051] Figure 2 for Figure 1 P-direction view.

[0052] Figure 3Schematic diagram of the steel pushing position of the push plate mechanism.

[0053] Figure 4 Schematic diagram of the unloading position of the push plate mechanism.

[0054] Figure 5 This is a schematic diagram of the equipment's location during maintenance.

[0055] Figure 6 for Figure 1 Schematic diagram of K amplification.

[0056] Figure 7 for Figure 2 Schematic diagram of L enlargement.

[0057] Figure 8 for Figure 2 CC cross-sectional view.

[0058] Fig. 9 for Figure 3 BB cross-sectional view.

[0059] Fig.10 It is a schematic diagram of the swing arm mechanism structure.

[0060] Fig.11 for Fig.10 AA section view.

[0061] Fig.12 It is the front view of the push plate mechanism.

[0062] Fig.13 for Fig.12 Top view of the .

[0063] Fig.14 for Fig.12 Side view of.

[0064] Fig.15 for Figure 3 Schematic diagram of M magnification.

[0065] Fig.16 for Figure 4 Schematic diagram of N enlargement.

[0066] Fig.17 This is a schematic diagram of the structure of the chain mechanism of part number 9.

[0067] Fig.18 This is the working diagram of steel pushing by the push plate mechanism of the tail push device.

[0068] Fig.19 This is the unloading workflow diagram of the push plate mechanism of the tail push device.

[0069] In the figure: 1. hydraulic cylinder tail positioning device; 101. support; 102. positioning pin; 103. pin shaft 1; 104. baffle; 2. hydraulic cylinder; 201. hydraulic cylinder tail; 202. hydraulic cylinder head; 3. swing arm hinge positioning device; 301. bearing seat 1; 302. bearing seat 2; 303. pressure cover 1; 304. bearing; 305. pressure cover 2; 4. swing arm mechanism; 401. hinge shaft; 402. bearing plate; 403. rib plate; 404. vertical plate; 405. annular plate; 406. ear plate; 407. round steel plate; 408. side rib plate; 409. round hole 3; 410. round hole 2; 411. round hole 1; 412. elliptical hole; 413. pin shaft 2; 5. push plate mechanism; 501. connecting frame; 502. push plate; 503. 1. Spacer; 504. Pin; 505. Pressure cover three; 506. Roller bearing; 507. Screw; 508. Pin; 509. Bushing one; 6. Connecting rod mechanism; 601. Connecting rod; 602. Pin three; 603. Pin four; 604. Bushing two; 7. Spring mechanism; 701. Pin five; 702. Washer one; 703. Stud; 704. Large nut; 705. Pin six; 706. Telescopic spring; 8. Positioning detection system; 801. Base; 802. Bracket; 803. Proximity switch; 804. Induction plate one; 805. Induction plate two; 806. Contour detector; 9. Chain mechanism; 901. Chain hook one; 902. Chain; 903. Chain hook two; 10. Cut-to-length front panel; 11. Tail push device; 12. Tail steel plate. DETAILED DESCRIPTION

[0070] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0071] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0072] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0073] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, the numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0074] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0075] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0076] like Figure 1-17 As shown, the present invention provides a cooperative tail-pushing device 11 for cut-to-length shearing, which adopts a single-drive, split arrangement type, and usually 3 to 7 groups of tail-pushing devices 11 are arranged. Under the coordinated action of multiple groups of split tail-pushing devices 11, the tail steel plate 12 is jointly pushed away from the cut-to-length shearing equipment to achieve a smooth blanking function.

[0077] Each set of tail pushing devices 11 includes a hydraulic cylinder tail positioning device 1, a hydraulic cylinder 2, a swing arm hinge point positioning device 3, a swing arm mechanism 4, a push plate mechanism 5, a connecting rod mechanism 6, a spring mechanism 7, a positioning detection system 8, and a chain mechanism 9.

[0078] The tail pushing device 11 is driven by the hydraulic cylinder 2 to drive the swing arm mechanism 4 to drive the connecting rod mechanism 6 and the spring mechanism 7 to work together, and finally the push plate mechanism 5 pushes the tail steel plate 12 to fall smoothly into the waste collection device.

[0079] The tail pushing device 11 drives the swing arm mechanism 4 to realize the lifting and translation of the push plate mechanism 5 through the telescopic drive of the hydraulic cylinder 2, so that the push plate mechanism 5 has two working positions, namely the steel pushing position and the unloading position, and realizes the positioning function of the two working positions through the positioning detection system 8, and at the same time sets the limit protection of the abnormal working position.

[0080] The positioning detection system 8 of the tail pushing device 11 is equipped with a contour detector 806, which can detect the outer contour and dimensional length of the tail steel plate 12. Based on this data, a decision can be made on the number of tail pushing devices 11 groups that will eventually be put into the steel pushing work, thereby realizing the coordinated steel pushing of multiple groups of tail pushing devices 11, avoiding the need for redundant tail pushing devices 11 to be put into work, and playing a role in energy saving and consumption reduction.

[0081] When the tail pushing device 11 is inspected during the cut-to-length equipment maintenance, the chain mechanism 9 realizes the safety locking and fixing functions. At this time, the induction plate 2 805 of the positioning detection system 8 overlaps with the upper proximity switch 803, and the piston rod of the hydraulic cylinder 2 is in a retracted state and is in the minimum stroke position.

[0082] The hydraulic cylinder tail positioning device 1 mainly includes a support 101, a positioning pin 102, a pin shaft 103, and a baffle 104. The hydraulic cylinder tail positioning device 1 is used to perform hinge positioning on the hydraulic cylinder tail 201. The bottom plate of the support 101 is fastened to the cut-to-length front panel 10 by bolts, and a pin hole matching the positioning pin 102 is processed on the bottom plate of the support 101. The support 101 and the hydraulic cylinder tail 201 are connected by a pin shaft 103, and axial positioning is achieved through the baffle 104 and bolts.

[0083] The hydraulic cylinder 2 is the driving mechanism of the tail pusher 11. The hydraulic cylinder tail 201 and the hydraulic cylinder head 202 are respectively hinged and positioned with adjacent components. The hydraulic cylinder tail 201 is connected to the support 101 through the pin 103, and the hydraulic cylinder head 202 is connected to the annular plate 405 and the ear plate 406 through the pin 2 413.

[0084] The swing arm hinge point positioning device 3 mainly includes a bearing seat 1 301, a bearing seat 2 302, a pressure cover 1 303, a bearing 304, and a pressure cover 2 305. The swing arm hinge point positioning device 3 is used to perform hinge point positioning on the swing arm mechanism 4. The bearing seat 1 301 and the bearing seat 2 302 are respectively fastened to the front panel 10 of the cut-to-length shear by bolts, the swing arm hinge point positioning device 3 and the swing arm mechanism 4 are connected by a hinge shaft 401, and bearings 304 are respectively installed between the bearing seat 1 301, the bearing seat 2 302 and the hinge shaft 401, and axial positioning is achieved between the bearing seat 1 301 and the pressure cover 2 305, and between the bearing seat 2 302 and the pressure cover 1 303 by bolts.

[0085] The swing arm mechanism 4 mainly includes a hinge shaft 401, a bearing plate 402, a rib plate 403, a vertical plate 404, an annular plate 405, an ear plate 406, a round steel plate 407, a side rib plate 408, and a second pin 413. The swing arm mechanism 4 is a direct driving mechanism of the hydraulic cylinder 2. The hinge shaft 401 is connected to the first bearing seat 301 and the second bearing seat 302 respectively, and a bearing 304 is installed in the middle. Two bearing plates 402 are welded near the shaft head of the hinge shaft 401, and an ear plate 406 and an annular plate 405 are welded to the upper parts of the two bearing plates 402. A circular hole 411 is provided on the ear plate 406 and the annular plate 405, and the circular hole 411 is connected to the hydraulic cylinder head 202 through a second pin 413. A rib plate 403 is welded between the two bearing plates 402, and an elliptical hole 412 is machined on the rib plate 403. The elliptical hole 412 provides free swinging space for the stud 703 and the large nut 704. The left side of the rib plate 403 is welded to the shaft of the hinge shaft 401, and the right side is welded to the side rib plate 408. A vertical plate 404 is welded between the upper part of the rib plate 403, the two bearing plates 402, and the two ear plates 406. Two round steel plates 407 are welded to the inner side of the two bearing plates 402 and the lower part of the elliptical hole 412. A second round hole 410 is machined on the round steel plate 407, and the second round hole 410 is connected to the spring mechanism 7 through a fifth pin 701. A third round hole 409 is machined on the right side of the two bearing plates 402, and the third round hole 409 is connected to the connecting rod mechanism 6 through a fourth pin 603.

[0086] The push plate mechanism 5 mainly includes a connecting frame 501, a push plate 502, a spacer 503, a pin 504, a gland 3 505, a roller bearing 506, a screw 507, a pin 508, and a sleeve 1 509. The push plate mechanism 5 is a key mechanism of the tail pushing device 11, and is also a direct actuator for driving the tail steel plate 12. The connecting frame 501 is a welded structure, and its left side is positioned with the push plate 502 through a pin 508 and fixed by two screws 507. The two ends of the connecting frame 501 are respectively connected with two pins 504, and roller bearings 506 (a total of 4 groups) are respectively installed at both ends of the pin 504. The inner side of the roller bearing 506 and the outer side of the connecting frame 501 are positioned through the spacer 503, and the outer side of the roller bearing 506 is axially positioned through the boss of the pin 504 and the gland 3 505 and bolts. The bottom of the roller bearing 506 is lower than the lower surface of the push plate 502 by a distance h (the value of h is 3mm to 5mm). A hole is processed in the middle of the connecting frame 501 and a sleeve 509 is installed. The sleeve 509 is connected to the connecting rod mechanism 6 through a pin shaft 3 602.

[0087] The connecting rod mechanism 6 mainly includes a connecting rod 601, a pin shaft 3 602, a pin shaft 4 603, and a sleeve 2 604. The connecting rod mechanism 6 is an intermediate mechanism between the swing arm mechanism 4 and the push plate mechanism 5, and is a very important connecting component in the push tail device 11. The connecting rod 601 is a welded structure, and its left side is connected to the push plate mechanism 5 through a pin shaft 3 602. The right side of the connecting rod 601 is processed with a round hole and a sleeve 2 604 is installed. The sleeve 2 604 and the connecting rod mechanism 6 are connected through a pin shaft 4 603. The ends of the pin shaft 3 602 and the pin shaft 4 603 are axially positioned through the baffle 104 and the bolt. The middle upper part of the connecting rod 601 is connected to the spring mechanism 7 through a pin shaft 6 705.

[0088] The spring mechanism 7 mainly includes a fifth pin 701, a washer 702, a stud 703, a large nut 704, a sixth pin 705, and a telescopic spring 706. The spring mechanism 7 is an intermediate mechanism between the swing arm mechanism 4 and the connecting rod mechanism 6, and is a very important connecting component in the tail pushing device 11. A thread is processed at one end of the stud 703. After the stud 703 passes through the washer 702, the thread of the stud 703 is screwed into the threaded hole of the sixth pin 705;

[0089] An axial hole is processed in the middle of the pin shaft 701, and washers 702 are arranged on both sides of the axial hole of the pin shaft 701. The top of the stud 703 passes through the telescopic spring 706, the washer 702, and the pin shaft 701 in sequence, and then a large nut 704 is installed to fix it with the swing arm mechanism 4.

[0090] The positioning detection system 8 includes a base 801, a bracket 802, a proximity switch 803, a sensor plate 1 804, a sensor plate 2 805, and a contour detector 806. The base 801 is welded on the front panel 10 of the cut-to-length shear at an appropriate position. The bracket 802 is fastened to the base 801 by bolts. The proximity switch 803 is installed on the bracket 802. The sensor plate 1 804 and the sensor plate 2 805 are welded on the upper and lower sides of the load-bearing plate 402 respectively. The contour detector 806 is installed on the left side of the front panel 10 of the cut-to-length shear and the side of the steel plate transportation entrance, and is used to detect the outer contour and size length of the tail steel plate 12 to determine the number of tail pushing devices 11 that are finally put into the steel pushing work.

[0091] The chain mechanism 9 mainly includes a chain hook 1 901, a chain 902, and a chain hook 2 903. Both ends of the chain 902 are connected to the chain hook 1 901 and the chain hook 2 903 respectively. The chain hook 1 901 is connected to the pin 103, and the chain hook 2 903 is connected to the pin 4 603.

[0092] like Figure 18-19 As shown, the control method of the present invention is further described as follows in conjunction with the embodiments:

[0093] 1. Steel pushing process and control method of tail pushing device:

[0094] The so-called steel pushing process of the tail pushing device is the movement process of multiple groups of tail pushing devices 11 driving the swing arm mechanism 4 through the hydraulic cylinder 2 to move the push plate mechanism 5 from the unloading position to the steel pushing position. The positioning monitoring system 8 tracks the whole process to provide technical guarantee for the tail steel plate 12 to be smoothly pushed away from the cut-to-length shear and fall into the waste collection device. The specific steel pushing process and control method include the following steps:

[0095] In the first step, the push plate mechanism 5 is in the unloading position. At this time, the induction plate 2 805 of the positioning detection system 8 overlaps with the upper proximity switch 803, the hydraulic cylinder piston rod is in the retracted state and is in the minimum stroke position, the swing arm mechanism 4, the push plate mechanism 5, the connecting rod mechanism 6, and the spring mechanism 7 are all in the highest position, and the spring mechanism 7 is in a naturally straight position.

[0096] The second step is to determine whether there is a tailing steel plate 12. The contour detector 806 arranged on the left side of the cut-to-length shear scans the shearing area of ​​the cut-to-length shear to determine whether there is a tailing steel plate 12. If there is no tailing steel plate 12, the hydraulic cylinder 2 continues to maintain the current position state. If a tailing steel plate 12 is found, the third step is entered.

[0097] The third step is to identify the shape of the tailing steel plate 12. The contour detector 806 performs contour identification and size extraction on the tailing steel plate 12 to prepare for the subsequent steel pushing work.

[0098] The fourth step is to determine the number of sets of tail pushing devices 11 to be put into operation. In combination with the external contour and size data of the tail steel plate 12, a steel pushing model is established. After comprehensive analysis, the number of sets of tail pushing devices 11 to be put into operation is determined to achieve coordinated steel pushing of multiple sets of tail pushing devices 11, avoid putting redundant tail pushing devices 11 into operation, and play a role in energy saving and consumption reduction.

[0099] Step 5: Start the steel pushing preparation work. The piston rod of the hydraulic cylinder 2 extends, driving the swing arm mechanism 4 to rotate clockwise around the swing arm hinge positioning device 3, and driving the connecting rod mechanism 6 and the spring mechanism 7 to move together. Under the joint action of the connecting rod mechanism 6 and the spring mechanism 7, the push plate mechanism 5 reaches the steel pushing position.

[0100] Step 6: Determine whether the steel pushing position has been reached. The contour detector 806 arranged on the left side of the cut-to-length shear scans the cutting area of ​​the cut-to-length shear to determine whether the push plate mechanism 5 has reached the steel pushing position. If it has not reached the steel pushing position, repeat step 5. If it has reached the steel pushing position, proceed to step 7.

[0101] Step 7: The tail steel plate 12 is pushed away from the cut-to-length area. At this time, the induction plate 804 of the positioning detection system 8 overlaps with the proximity switch 803 below, and the piston rod of the hydraulic cylinder is in an extended state and is at the maximum stroke position. Under the driving force provided by the hydraulic system and the inertial force of each mechanism, the left side of the push plate 502 of the push plate mechanism 5 pushes the tail steel plate 12 away from the cut-to-length table and smoothly falls into the waste collection device.

[0102] Step 8. At this point, the entire steel pushing process and control method of the tail pushing device 11 are completed and enter the next steel pushing work cycle.

[0103] In the entire steel pushing process of the push plate 502, the bottom of the roller bearing 506 is lower than the lower surface of the push plate 502 by a distance h, which can effectively prevent the lower surface of the push plate 502 from scratching the upper surface of the roller cover. At the same time, the roller bearing 506 pushes the push plate mechanism 5 to move leftward, which converts the sliding friction on the upper surface of the roller cover of the traditional technology into rolling friction, avoiding excessive wear of the equipment and extending the service life.

[0104] In addition, during the entire steel pushing operation of the push plate mechanism 5, on the one hand, the compression of the spring mechanism 7 buffers the instantaneous impact force of the tail steel plate 12, thereby improving the stability of the steel pushing process. On the other hand, the support of the roller bearing 506 prevents the bottom of the push plate mechanism 5 from being suspended in the air, thereby preventing the push plate 502 from tilting and uneven force on the steel, thereby further improving safety and stability.

[0105] 2. Unloading process and control method of tail pusher:

[0106] The unloading process of the so-called tail-pushing device is the movement process of multiple groups of tail-pushing devices 11 driving the swing arm mechanism 4 through the hydraulic cylinder 2 to move the push plate mechanism 5 from the steel pushing position to the unloading position. The positioning monitoring system 8 tracks the whole process to provide technical guarantee for the tail-pushing device 11 to return to the unloading position smoothly. The specific unloading process and control method include the following steps:

[0107] In the first step, the push plate mechanism 5 is in the push steel position. At this time, the induction plate 804 of the positioning detection system 8 overlaps with the proximity switch 803 below, the hydraulic cylinder piston rod is in an extended state and is in the maximum stroke position, and the swing arm mechanism 4, the push plate mechanism 5, the connecting rod mechanism 6, and the spring mechanism 7 are all in the lowest position.

[0108] The second step is to determine whether there is a tailing steel plate 12. The contour detector 806 arranged on the left side of the cut-to-length shear scans the cutting area of ​​the cut-to-length shear to determine whether there is a tailing steel plate 12. If there is a tailing steel plate 12, the push plate mechanism 5 pushes the tailing steel plate 12 away from the cut-to-length shear area and smoothly falls into the waste collection device. If there is no tailing steel plate 12, the third step is entered.

[0109] The third step is to start the unloading preparation work. The piston rod of the hydraulic cylinder 2 retracts, driving the swing arm mechanism 4 to rotate counterclockwise around the swing arm hinge positioning device 3, and driving the connecting rod mechanism 6 and the spring mechanism 7 to move together. Under the joint action of the connecting rod mechanism 6 and the spring mechanism 7, the push plate mechanism 5 reaches the unloading position.

[0110] Step 4: Determine whether the unloading position has been reached. The contour detector 806 arranged on the left side of the cut-to-length shear scans the shearing area of ​​the cut-to-length shear to determine whether there is a push plate mechanism 5 at the steel pushing position. If there is a push plate mechanism 5, repeat the third step. If there is no push plate mechanism 5, proceed to the fifth step.

[0111] Step 5: The tail pusher 11 reaches the unloading position. At this time, the induction plate 2 805 of the positioning detection system 8 overlaps with the upper proximity switch 803, and the hydraulic cylinder piston rod is in a retracted state and is in the minimum stroke position. The swing arm mechanism 4, the push plate mechanism 5, the connecting rod mechanism 6, and the spring mechanism 7 are all in the highest position, and the spring mechanism 7 is in a naturally straight position.

[0112] Step 6: At this point, the unloading process and control method of the entire tail pusher 11 are completed, and the next unloading process is entered.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cooperative tail-pushing device for cut-to-length shears, characterized in that: The invention comprises a plurality of groups of independently driven split tail pushing devices (11) arranged on the cut-to-length shear, each group of the tail pushing devices (11) comprising a hydraulic cylinder (2), a swing arm mechanism (4), a push plate mechanism (5), a connecting rod mechanism (6), a spring mechanism (7), and a positioning detection system (8); the hydraulic cylinder (2) drives the swing arm mechanism (4) to drive the connecting rod mechanism (6) and the spring mechanism (7) to work together, so that the push plate mechanism (5) pushes the tail steel plate (12) to fall into the waste collection device; The positioning detection system (8) comprises a base (801), a bracket (802), a proximity switch (803), a first sensing plate (804), a second sensing plate (805), and a contour detector (806); The base (801) is welded on the front panel (10) of the cut-to-length shear, and the bracket (802) is fastened to the base (801) by bolts. A proximity switch (803) is installed on the bracket (802). A sensing plate 1 (804) and a sensing plate 2 (805) are respectively welded on the upper and lower sides of the load-bearing plate (402). A contour detector (806) is installed on the left side of the front panel (10) of the cut-to-length shear and on the side of the steel plate transportation entrance, and is used to detect the outer contour and size length of the tail steel plate (12) to determine the number of groups of the tail pushing device (11) that are finally put into the steel pushing work.

2. The cooperative tail-pushing device for cut-to-length cutting according to claim 1, characterized in that: The tail pushing device (11) further comprises a hydraulic cylinder tail positioning device (1) for positioning the hinge point of the hydraulic cylinder (2); The hydraulic cylinder tail positioning device (1) comprises a support (101), a positioning pin (102), a pin shaft (103), and a baffle (104); a pin hole matching the positioning pin (102) is processed on the bottom plate of the support (101); the positioning pin (102) passes through the pin hole to fasten the support (101) to the cut-to-length front panel (10); the support (101) is connected to the hydraulic cylinder (2), and the axial positioning of the pin shaft (103) is achieved through the baffle (104) and bolts; The hydraulic cylinder (2) is a driving mechanism of the tail pushing device (11), and the hydraulic cylinder (2) comprises a hydraulic cylinder tail portion (201) and a hydraulic cylinder head portion (202). The hydraulic cylinder tail portion (201) is connected to a support (101) via a pin shaft (103), and the hydraulic cylinder head portion (202) is connected to a swing arm mechanism (4).

3. The coordinated tail-pushing device for cut-to-length cutting according to claim 1, characterized in that: The tail pushing device (11) further comprises a swing arm hinge point positioning device (3) connected to the swing arm mechanism (4) via a hinge shaft (401), the swing arm hinge point positioning device (3) being used to perform hinge point positioning on the swing arm mechanism (4); The swing arm hinge point positioning device (3) comprises a bearing seat 1 (301), a bearing seat 2 (302), a pressure cover 1 (303), a bearing (304), and a pressure cover 2 (305); the bearing seat 1 (301) and the bearing seat 2 (302) are respectively fastened to the front panel (10) of the cut-to-length shear by bolts, and the bearings (304) are respectively installed between the bearing seat 1 (301), the bearing seat 2 (302) and the hinge shaft (401), and the axial positioning is achieved between the bearing seat 1 (301) and the pressure cover 2 (305), and between the bearing seat 2 (302) and the pressure cover 1 (303) by bolts.

4. The cooperative tail-pushing device for cut-to-length cutting according to claim 1, characterized in that: The push plate mechanism (5) comprises a connecting frame (501), a push plate (502), a spacer (503), a pin (504), a pressure cover (505), a roller bearing (506), a screw (507), a pin (508), and a sleeve (509); the left side of the connecting frame (501) is positioned with the push plate (502) through a pin (508), and is fixed together by two screws (507); the two ends of the connecting frame (501) are respectively connected with two pins (504), and roller bearings (506) are respectively installed at the two ends of the pins (504), and the inner side of the roller bearing (506) and the outer side of the connecting frame (501) are positioned through a spacer (503), and the outer side of the roller bearing (506) is axially positioned by the boss of the pin (504), the pressure cover (505) and the bolts; The bottom of the roller bearing (506) is lower than the lower surface of the push plate (502) by a distance h, where the value of h is 3 mm to 5 mm. A hole is processed in the middle of the connecting frame (501) and a shaft sleeve (509) is installed. The shaft sleeve (509) is connected to the connecting rod mechanism (6) through a pin shaft (602).

5. The cooperative tail-pushing device for cut-to-length cutting according to claim 1, characterized in that: The connecting rod mechanism (6) comprises a connecting rod (601), a third pin shaft (602), a fourth pin shaft (603), and a second sleeve (604); The left side of the connecting rod (601) is connected to the push plate mechanism (5) via a pin shaft three (602), a round hole is processed on the right side of the connecting rod (601) and a shaft sleeve two (604) is installed, the shaft sleeve two (604) and the connecting rod mechanism (6) are connected via a pin shaft four (603), the ends of the pin shaft three (602) and the pin shaft four (603) are axially positioned via a baffle (104) and a bolt, and the middle upper part of the connecting rod (601) is connected to the spring mechanism (7) via a pin shaft six (705); The spring mechanism (7) comprises a fifth pin (701), a washer (702), a stud (703), a large nut (704), a sixth pin (705), and a telescopic spring (706); One end of the stud (703) is processed with a thread, and after the stud (703) passes through the washer 1 (702), the thread of the stud (703) is screwed into the threaded hole of the pin shaft 6 (705); A shaft hole is processed in the middle of the pin shaft 5 (701), washers 1 (702) are arranged on both sides of the shaft hole of the pin shaft 5 (701), and the top of the stud (703) passes through the telescopic spring (706), the washer 1 (702), and the pin shaft 5 (701) in sequence, and then a large nut (704) is installed to be fixedly connected with the swing arm mechanism (4).

6. The coordinated tail-pushing device for cut-to-length cutting according to claim 1, characterized in that: The swing arm mechanism (4) comprises a hinge shaft (401), a load-bearing plate (402), a rib plate (403), a vertical plate (404), an annular plate (405), an ear plate (406), a round steel plate (407), a side rib plate (408), and a second pin shaft (413); The swing arm mechanism (4) is a direct drive mechanism of the hydraulic cylinder (2). Two bearing plates (402) are welded near the shaft head of the hinge shaft (401). Ear plates (406) and annular plates (405) are welded to the upper parts of the two bearing plates (402). A circular hole (411) is provided on the ear plates (406) and the annular plate (405). A pin is provided between the circular hole (411) and the hydraulic cylinder head (202). Two (413) connections; a rib plate (403) is welded between the two load-bearing plates (402), an elliptical hole (412) is processed on the rib plate (403), the left side of the rib plate (403) is welded to the shaft body of the hinge shaft (401), the right side of the rib plate (403) is welded to the side rib plate (408), and a vertical plate (404) is welded between the upper part of the rib plate (403), the two load-bearing plates (402) and the two ear plates (406); Two round steel plates (407) are welded on the inner side of the bearing plate (402) below the elliptical hole (412), and round holes (410) are processed on the round steel plates (407) respectively. The round holes (410) are connected to the spring mechanism (7) via pins (701); round holes (409) are processed on the right sides of the two bearing plates (402), and the round holes (409) are connected to the connecting rod mechanism (6) via pins (603).

7. The coordinated tail-pushing device for cut-to-length cutting according to claim 1, characterized in that: The tail pushing device (11) also includes a chain mechanism (9), and the chain mechanism (9) includes a chain hook 1 (901), a chain (902), and a chain hook 2 (903). The two ends of the chain (902) are respectively connected to the chain hook 1 (901) and the chain hook 2 (903). The chain hook 1 (901) is connected to the pin shaft 1 (103), and the chain hook 2 (903) is connected to the pin shaft 4 (603).

8. A control method for a coordinated tail-pushing device for cut-to-length shears, based on the coordinated tail-pushing device for cut-to-length shears according to any one of claims 1 to 7, characterized in that: The invention comprises a tail pushing device (11) which drives a swing arm mechanism (4) through a hydraulic cylinder (2) to realize the lifting and translation of a push plate mechanism (5), so that the push plate mechanism (5) has two working positions, namely a steel pushing position and an unloading position, and the positioning function of the two working positions is realized through a positioning detection system (8).

9. The control method for the coordinated tail-pushing device for cut-to-length shearing according to claim 8, characterized in that: The steel pushing control method of the tail pushing device includes: Step 1: The push plate mechanism (5) is in the unloading position. At this time, the second induction plate (805) of the positioning detection system (8) overlaps with the upper proximity switch (803), the piston rod of the hydraulic cylinder (2) is in the retracted state and is in the minimum stroke position, the swing arm mechanism (4), the push plate mechanism (5), the connecting rod mechanism (6), and the spring mechanism (7) are all in the highest position, and the spring mechanism (7) is in a naturally straight state; The second step is to determine whether there is a tailing steel plate (12). The contour detector (806) arranged on the left side of the cut-to-length shear scans the shearing area of ​​the cut-to-length shear to determine whether there is a tailing steel plate (12). If there is no tailing steel plate (12), the hydraulic cylinder (2) continues to maintain the current position state. If a tailing steel plate (12) is found, the next step is entered. The third step is to identify the shape of the tail steel plate (12) and determine the number of groups of tail pushing devices (11) to be put into operation; the contour detector (806) performs contour identification and size extraction on the tail steel plate (12), and determines the number of groups of tail pushing devices (11) to be put into operation based on the external contour and size data of the tail steel plate, so as to realize the coordinated steel pushing of multiple groups of tail pushing devices (11); Step 4: Start the steel pushing preparation work, the piston rod of the hydraulic cylinder (2) extends, driving the swing arm mechanism (4) to rotate clockwise around the swing arm hinge positioning device (3), and at the same time drives the connecting rod mechanism (6) and the spring mechanism (7) to move together. Under the joint action of the connecting rod mechanism (6) and the spring mechanism (7), the push plate mechanism (5) reaches the steel pushing position; Step 5: Determine whether the steel pushing position has been reached. The contour detector (806) arranged on the left side of the cut-to-length shear scans the shearing area of ​​the cut-to-length shear to determine whether the push plate mechanism (5) has reached the steel pushing position. If it has not reached the steel pushing position, repeat the previous step; if it has reached the steel pushing position, proceed to the next step. Step 6: The tail steel plate (12) is pushed away from the cut-to-length area. At this time, the induction plate 1 (804) of the positioning detection system (8) overlaps with the proximity switch (803) below, and the piston rod of the hydraulic cylinder (2) is in an extended state and is in the maximum stroke position; under the driving force provided by the hydraulic system and the inertial force of each mechanism, the left side of the push plate (502) of the push plate mechanism (5) pushes the tail steel plate (12) away from the cut-to-length table and smoothly falls into the waste collection device; At this point, the entire steel pushing control method of the tail pushing device (11) is completed and enters the next steel pushing working cycle.

10. The control method for the coordinated tail-pushing device for cut-to-length shearing according to claim 8, characterized in that: The unloading control method of the tail thrust device includes: In the first step, the push plate mechanism (5) is in the steel pushing position. At this time, the induction plate 1 (804) of the positioning detection system (8) overlaps with the proximity switch (803) below, the piston rod of the hydraulic cylinder (2) is in an extended state and is in the maximum stroke position, and the swing arm mechanism (4), the push plate mechanism (5), the connecting rod mechanism (6), and the spring mechanism (7) are all in the lowest position; The second step is to determine whether there is a tailing steel plate (12). The contour detector (806) arranged on the left side of the cut-to-length shear scans the shearing area of ​​the cut-to-length shear to determine whether there is a tailing steel plate (12). If there is a tailing steel plate (12), the push plate mechanism (5) pushes the tailing steel plate (12) away from the cut-to-length shear area and smoothly falls into the waste collection device. If there is no tailing steel plate (12), proceed to the next step. Step 3: Start the unloading preparation work, the piston rod of the hydraulic cylinder (2) retracts, drives the swing arm mechanism (4) to rotate counterclockwise around the swing arm hinge positioning device (3), and drives the connecting rod mechanism (6) and the spring mechanism (7) to move together. Under the joint action of the connecting rod mechanism (6) and the spring mechanism (7), the push plate mechanism (5) reaches the unloading position; Step 4: Determine whether the unloading position has been reached. The contour detector (806) arranged on the left side of the cut-to-length shear scans the shearing area of ​​the cut-to-length shear to determine whether there is a push plate mechanism (5) at the steel pushing position. If there is a push plate mechanism (5), repeat the previous step. If there is no push plate mechanism (5), proceed to the next step. Step 5: The tail pusher (11) reaches the unloading position. At this time, the second induction plate (805) of the positioning detection system (8) overlaps with the upper proximity switch (803), and the piston rod of the hydraulic cylinder (2) is in a retracted state and is in the minimum stroke position; the swing arm mechanism (4), the push plate mechanism (5), the connecting rod mechanism (6), and the spring mechanism (7) are all in the highest position, and the spring mechanism (7) is in a naturally straight state; At this point, the unloading control method of the entire tail pusher device ends and enters the next unloading work cycle.

Images