Blank offline collecting device and method compatible with rectangular blanks

Abstract

The invention discloses a blank offline collecting device and method compatible with rectangular blanks, and belongs to the technical field of ferrous metallurgy continuous casting. The blank offline collecting device compatible with the rectangular blanks comprises a cooling bed, a collecting rack used for bearing the rectangular blanks at the discharging end of the cooling bed and a pusher dog trolley installed in the collecting rack, a plurality of pusher dogs are distributed on the pusher dog trolley along a rectangular blank propelling line, and a steel overturning assembly is installed on the side, between a second pusher dog and a third pusher dog, of the collecting rack. And when the short plate surfaces of the rectangular blanks are parallel to the sliding rail surface of the collecting rack, the steel overturning assembly overturns the rectangular blanks until the long plate surfaces are parallel to the sliding rail surface of the collecting rack, so that the directions of the rectangular blanks are consistent before the rectangular blanks are offline and hoisted on the collecting rack, and subsequent direct hoisting and stacking are facilitated. The technical problem that in an existing continuous steel casting production line, square billets and rectangular billets on the same continuous steel casting production line cannot be discharged in a compatible mode is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of continuous casting in iron and steel metallurgy, and more specifically to a billet offline collection device and method compatible with rectangular billets. Background Art

[0002] In a continuous steel casting production line, the cast billet first undergoes primary cooling in a mold, then secondary cooling and solidification in a secondary cooling zone, then straightening in a straightening machine zone, and then enters the roller table before cutting. After the liquid core of the steel billet is completely solidified, it is cut in a flame cutting zone, and then enters the roller table after cutting and the billet discharging roller table.

[0003] In the traditional process layout, the billets need to be cooled by flipping on a cooling bed, and then arranged side by side on a collecting table to meet the grouping and lifting requirements of a magnetic disk crane or a clamp crane, and finally stacked offline. The stacking process of cast billets is an important buffer link in the continuous casting - rolling section. The consistency of the billet direction directly affects the effectiveness of inventory management and operation safety.

[0004] For example, in the patent application with the publication number CN119733811A and the publication date of April 1, 2025, a pusher device and billet discharging method capable of realizing billet grouping and billet splitting are disclosed. The device includes a beam frame, a claw car, a synchronous shaft, a hydraulic cylinder, a movement control mechanism, and a billet detection mechanism; multiple beam frames are arranged in parallel, and a supporting rail and a track are provided on the beam frame; the claw car is movably arranged on the track of each beam frame, and several rotatable claws are distributed along the line of the claw car. The claws can automatically return to the vertical state and are limited at the lower part on the side facing the tail end of the beam frame; the synchronous shaft is distributed with connecting rod components along the line; the hydraulic cylinder can drive the synchronous shaft to rotate and drive all claw cars to move synchronously through each connecting rod component; the movement control mechanism is used to control the movement direction and movement amount of the claw car through the hydraulic cylinder; the billet detection mechanism is used to detect whether there is a billet at the tail end position of the beam frame. This device can realize both the functions of billet grouping and billet splitting, but when the billet directions are inconsistent, it will still affect the subsequent lifting and stacking, and the square billets and rectangular billets on the same production line cannot be compatible for billet discharging. Summary of the Invention

[0005] 1. Technical problems to be solved by the invention:

[0006] Aiming at the problem that square billets and rectangular billets on the same continuous steel casting production line cannot be compatible for billet discharging in the existing continuous steel casting production line, the present invention provides a billet offline collection device and method compatible with rectangular billets. By installing a steel - turning component beside the collecting table between the second claw and the third claw, the rectangular billets with inconsistent billet directions are flipped so that the long plate surface is parallel to the sliding rail surface of the collecting table, ensuring that the billet directions are consistent before the rectangular billets are lifted and transported offline on the collecting table, so as to achieve the purpose of direct subsequent lifting and stacking.

[0007] 2. Technical Solution:

[0008] To achieve the above object, the technical solution provided by the present invention is as follows:

[0009] A blank offline collection device compatible with rectangular billets, including a cooling bed, a collection rack for receiving rectangular billets at the discharge end of the cooling bed, and a pawl trolley installed in the collection rack. A number of pawls are distributed along the advancing line of the rectangular billet. A steel-turning component is installed beside the collection rack between the second pawl and the third pawl. When the short side surface of the rectangular billet is parallel to the slide rail surface of the collection rack, the steel-turning component flips the rectangular billet so that the long side surface is parallel to the slide rail surface of the collection rack, ensuring that the billet directions are consistent before the rectangular billet is lifted and transported offline on the collection rack, so as to directly lift and stack in the subsequent process.

[0010] In a further technical solution, the steel-turning component includes a first connecting rod, a second connecting rod, a third connecting rod, a first long shaft, and a second long shaft. The first connecting rod is hinged to the first long shaft through a bearing at a first fixed point. The first connecting rod and the third connecting rod are hinged at a first moving point. The third connecting rod and the second connecting rod are hinged at a second moving point. The second connecting rod is hinged to the second long shaft at a second fixed point. One end of the third connecting rod is connected with a push head. The first fixed point and the second fixed point are collinear in the vertical direction. A driving device is also hinged on the first long shaft.

[0011] In a further technical solution, the push head is set as a straight shape or a Y shape according to the cross-sectional dimension of the rectangular billet.

[0012] In a further technical solution, the included angle of the Y-shaped push head is set to 100° ± 5°, which can ensure that there is a margin space for the rectangular billet casting to tilt under the action of gravity after leaving the rail surface.

[0013] In a further technical solution, multiple steel-turning components are arranged in parallel, and the first long shafts and the second long shafts of each steel-turning component are respectively connected into a first synchronous shaft and a second synchronous shaft through couplings.

[0014] In a further technical solution, an image feedback device is additionally provided around the collection rack.

[0015] A collection method for the above blank offline collection device compatible with rectangular billets. When the casting billet is a rectangular billet with a small cross-section, the steps are as follows:

[0016] The rectangular billet blank passes through the cooling bed to the collection rack. The oil cylinder drives the pawl trolley to move. The blank is pushed by the first pawl closest to the discharge end of the cooling bed to travel a fixed distance to between the second pawl and the third pawl.

[0017] In the initial position, the push head of the third connecting rod is lower than the slide rail surface of the collection rack. When the image feedback device recognizes that the short side surface of the blank is parallel to the slide rail surface of the collection rack, the first synchronous shaft rotates, and the first connecting rod fixed on the first synchronous shaft rotates accordingly. The second connecting rod rotates parallel to the first connecting rod, and the third connecting rod rises in the vertical direction. The left side of the straight push head touches the lower left corner of the rectangular billet.

[0018] Under the push of the pusher, the blank rotates around its lower right corner on the slide rail surface, and finally, under the action of its own gravity, the long side of the rectangular blank is parallel to the slide rail surface of the collection stand;

[0019] The second claw pushes the blanks to move in a fixed row, and then the third claw pushes them to be assembled on the assembly surface and then hoisted to the stacking area.

[0020] A collection method of the above-mentioned billet offline collection device compatible with rectangular billets, when the billet is a rectangular billet with a larger cross-section, the steps are:

[0021] The rectangular billet passes through the cooling bed to the collecting stand, and the oil cylinder drives the claw trolley to move. The billet is pushed by claw 1 closest to the discharge end of the cooling bed to move a fixed distance to between claw 2 and claw 3;

[0022] In the initial position, the push head of the connecting rod 3 is lower than the slide rail surface of the collecting platform; when the image feedback device recognizes that the short board surface of the blank is parallel to the slide rail surface of the collecting platform, the synchronous shaft 1 rotates, and the connecting rod 1 fixed on the synchronous shaft 1 rotates accordingly, and the connecting rod 2 rotates parallel to the connecting rod 1, and the connecting rod 3 rises in the vertical direction, and the left side of the Y-shaped push head touches the lower left corner of the rectangular blank;

[0023] The blank is pushed by the pusher head and rotates around its lower right corner on the slide rail surface; the steel turning assembly continues to move, and the connecting rod lifts the blank upward in the vertical direction to leave the slide rail surface. Under the action of its own gravity, the blank is dumped to the right side of the Y-shaped pusher head;

[0024] The oil cylinder moves in the reverse direction, the connecting rod 3 drops vertically, the blank contacts the slide rail surface, and then the long plate surface is parallel to the slide rail surface of the collection stand, and the connecting rod 3 continues to drop until it is lower than the slide rail surface;

[0025] The second claw pushes the blanks to move in a fixed row, and then the third claw pushes them to be assembled on the assembly surface and then hoisted to the stacking area.

[0026] 3. Beneficial effects:

[0027] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0028] (1) The billet off-line collection device compatible with rectangular billets of the present invention can be used for the transformation of continuous steel casting production lines, and the existing equipment can be cleverly adjusted and optimized to meet the space limitations of the plant, so as to achieve the off-line requirements of compatible billets and rectangular billets, thereby improving the efficiency of the production line; the additional billet turning and position adjustment operations are omitted for the subsequent stacking process, so that the process connection is smoother, the plant space is efficiently utilized, and the maintenance is convenient;

[0029] (2) The billet offline collection device compatible with rectangular billets of the present invention can adapt to billets with different cross-sectional dimensions by adjusting the form of the pusher head, with wide applicability. Under the condition of adding the production condition of rectangular billet cross-section to the existing square billet continuous casting machine, the unified billet discharging state has a promising prospect for popularization;

[0030] (3) The billet offline collection device compatible with rectangular billets of the present invention, through the combination of the steel turning component and the Y-shaped pusher head, has a compact and delicate structure, stable movement, high transmission efficiency, is convenient to be installed in the pit of the collection bench, and cooperates with the pawls of the bench to move, realizing the high-efficiency and consistent-direction offline of rectangular billets, and having little impact on the billets;

[0031] (4) For the billet offline collection device compatible with rectangular billets of the present invention, both fixed points are rigidly synchronized by the synchronous shaft. Compared with the hydraulic servo system, it has a low failure rate and low transformation cost;

[0032] (5) The billet offline collection device compatible with rectangular billets of the present invention can reduce manual intervention through automatic linkage control, shorten the turning time, and has a significant improvement in efficiency compared with traditional manual or semi-automatic equipment, with high reliability;

[0033] (6) The billet offline collection device compatible with rectangular billets of the present invention has a wide application scenario. When the continuous casting and rolling production capacities are matched, the rectangular billets are offlined through this device, without stacking and buffering, but directly lifted and transported by train to the rolling mill workshop. The consistent-direction discharge of the billets also provides convenience for the billets to enter the heating furnace;

[0034] (7) The billet offline collection device and method compatible with rectangular billets of the present invention can, after the efficient technical transformation of the existing square billet continuous casting machine, ensure the same direction of the rectangular billets before they are offlined and lifted from the collection bench, so as to be directly lifted and stacked. This can not only ensure the smooth progress of the production process, but also effectively omit the additional turning and position adjustment operations of the billets in the stacking process, thereby significantly improving the production efficiency, having the production capacity of both square billets and rectangular billets, and adapting to the diverse needs of the external market environment. Brief Description of the Drawings

[0035] Figure 1 Side view structural schematic diagram of the billet offline collection device compatible with rectangular billets for a specific embodiment;

[0036] Figure 2 Structural schematic diagram of the billet offline collection device of the prior art;

[0037] Figure 3 Structural schematic diagram of the steel turning component for a specific embodiment;

[0038] Figure 4 Schematic diagram of the steel turning process of the rectangular billet for a specific embodiment;

[0039] Figure 5It is a schematic diagram of a rectangular billet turning process according to a specific embodiment;

[0040] Figure 6 It is a schematic diagram of the top view of the structure of a blank offline collection device compatible with rectangular blanks according to a specific embodiment.

[0041] In the figure: 1. Steel turning assembly; 2. Collecting stand; 3. Rotating arm; 4. Rotating arm cylinder; 5. Cooling bed; 6. Rectangular billet; 7. Steel turning cylinder; 11. Connecting rod one; 12. Connecting rod two; 13. Connecting rod three; 14. Fixed seat; 15. Pushing head; 16. Active point one; 17. Active point two; 18. Long axis one; 19. Long axis two; 21. Slide rail surface; 22. Marshalling surface; 30. Pushing claw trolley; 31. Pushing claw one; 32. Pushing claw two; 33. Pushing claw three. DETAILED DESCRIPTION

[0042] In order to further understand the content of the present invention, the invention is described in detail with reference to the accompanying drawings.

[0043] Example 1

[0044] The existing continuous casting production line of iron and steel metallurgy usually includes a molten steel receiving span, a casting span, a cutting span and a billet discharge span. After the billet is cut, it is transported to the cooling bed and other places by the billet discharge roller. Figure 2 The blank off-line collection device shown is hoisted to the subsequent stacking area after being grouped on the slide rail surface of the collection stand.

[0045] The iron and steel metallurgical continuous casting production line of this embodiment transforms the original casting cross-crystallizer, cooling system and straightening machine to make the original production line compatible with the production of rectangular billets 6. Due to limited plant space, when the rectangular billets 6 are compatible with production, in order to ensure that the billets are in the same direction before being lifted off the collection stand 2 for direct lifting and stacking, the existing billet off-line collection device is transformed into a billet off-line collection device compatible with the rectangular billets 6.

[0046] like Figure 1 As shown, the billet offline collection device compatible with rectangular billets 6 of this embodiment includes a cooling bed 5, a collection stand 2 for receiving the rectangular billets 6 at the discharge end of the cooling bed 5, and a claw trolley 30 installed in the collection stand 2. The collection stand 2 is a traditional claw-type collection stand 2, such as the claw trolley disclosed in the patent application with publication number CN119733811A. The arm 3 is driven by the arm cylinder 4 to drive the claw trolley 30 to move, thereby realizing the rowing and grouping of the billets. The claw trolley 30 has a plurality of claws distributed along the advancement line of the rectangular billet 6. A steel turning assembly 1 is installed on the side of the collection stand 2 between claw 2 32 and claw 3 33, as shown in FIG. Figure 1 , 3As shown, the steel turning assembly 1 includes a connecting rod 11, a connecting rod 2 12, a connecting rod 3 13, a long axis 18 and a long axis 2 19. The connecting rod 11 is hinged to the long axis 18 at a fixed point 1 through a bearing. The connecting rod 11 and the connecting rod 3 13 are hinged to the active point 16. The connecting rod 3 13 and the connecting rod 2 12 are hinged to the active point 17. The connecting rod 2 12 and the long axis 2 19 are hinged to the fixed point 2. One end of the connecting rod 3 13 is connected to a push head 15. The fixed point 1 and the fixed point 2 are collinear in the vertical direction and are fixed by a fixing seat 14. The fixing seat 14 is installed on the base surface. If there is a pit on the base surface, it can be directly installed in the pit next to the collecting stand 2 to increase its travel range. A driving device is also hinged on the long axis 18, and the driving device is a steel turning cylinder 7. The pusher head 15 is set to be straight or Y-shaped according to the cross-sectional size of the rectangular billet 6, wherein the wrap angle of the Y-shaped pusher head 15 is set to 100°±5° to ensure that there is enough space for the rectangular billet 6 to tip over under the action of gravity after it leaves the rail surface.

[0047] To ensure the synchronization and effectiveness of steel turning, Figure 6 As shown, there are multiple steel turning assemblies 1 arranged in parallel, and the long axis 18 and the long axis 2 19 of each steel turning assembly 1 are connected to form a synchronous axis 1 and a synchronous axis 2 through a coupling respectively.

[0048] The present embodiment is compatible with the offline collection device for rectangular billets 6. When the short board surface of the rectangular billet 6 is parallel to the slide rail surface 21 of the collection stand 2, the steel turning assembly 1 turns the rectangular billet 6 over to make the long board surface parallel to the slide rail surface 21 of the collection stand 2, so as to ensure that the direction of the billet is consistent before the rectangular billet 6 is lifted offline from the collection stand 2, so that it can be directly lifted and stacked in the subsequent sequence.

[0049] In the collection method of the billet offline collection device compatible with rectangular billets 6 of this embodiment, when the cross section of the billet is a square billet, since the sides of the square billets are equal, they can be directly hoisted and stacked, and the steel turning assembly 1 does not work at this time. The billet passes through the cooling bed 5 to the collection stand 2, and the oil cylinder drives the claw trolley 30 to move, such as Figure 2 As shown, the first claw 31 closest to the discharge end of the cooling bed 5 pushes the billets to move a fixed distance, and then the second claw 32 pushes the billets to move a fixed distance into rows, and then the billets are grouped and lifted to the stacking area under the push of the third claw 33.

[0050] Example 2

[0051] The collecting method of the off-line collecting device for rectangular billets 6 in this embodiment is similar to that in the first embodiment, except that an image feedback device, such as a camera and its controller, is provided around the collecting stand.

[0052] like Figure 4 As shown, when the billet is a rectangular billet 6 with a smaller cross-sectional specification of 165 mm*225 mm, the steps are:

[0053] The rectangular billet 6 is transferred from the cooling bed 5 to the collecting table frame 2. The oil cylinder drives the pawl trolley 30 to move. The billet is pushed by the first pawl 31 closest to the discharge end of the cooling bed 5 to travel a fixed stroke distance to between the second pawl 32 and the third pawl 33.

[0054] In the initial position, the pusher head 15 of the third connecting rod 13 is lower than the slide rail surface 21 of the collecting table frame 2. When the image feedback device recognizes that the short side surface of the billet is parallel to the slide rail surface 21 of the collecting table frame 2, the first synchronizing shaft rotates, and the first connecting rod 11 fixed on the first synchronizing shaft rotates accordingly. The second connecting rod 12 rotates parallel to the first connecting rod 11, and the third connecting rod 13 rises in the vertical direction. The left side of the straight pusher head 15 touches the lower left corner of the rectangular billet 6.

[0055] Under the push of the pusher head 15, the billet rotates around its lower right corner on the slide rail surface 21. Finally, under the action of its own gravity, the long side of the rectangular billet 6 is parallel to the slide rail surface 21 of the collecting table frame 2.

[0056] The second pawl 32 pushes the billets to travel a fixed stroke in a row, and then under the push of the third pawl 33, they are grouped on the grouping surface 22 and then lifted and transported to the stacking area.

[0057] Embodiment 3

[0058] The collecting method of the collecting device for the rectangular billet 6 compatible in this embodiment. The basic structure of the collecting device is the same as that in Embodiment 1. The differences or improvements are as follows:

[0059] As Figure 5 shown, when the continuous casting billet is a relatively large rectangular billet 6 with a cross-sectional specification of 380mm * 450mm, the steps are as follows:

[0060] The rectangular billet 6 is transferred from the cooling bed 5 to the collecting table frame 2. The oil cylinder drives the pawl trolley 30 to move. The billet is pushed by the first pawl 31 to travel a fixed stroke distance to between the second pawl 32 and the third pawl 33.

[0061] In the initial position, the pusher head 15 of the third connecting rod 13 is lower than the slide rail surface 21 of the collecting table frame 2. When the image feedback device recognizes that the short side surface of the billet is parallel to the slide rail surface 21 of the collecting table frame 2, the first synchronizing shaft rotates, and the first connecting rod 11 fixed on the first synchronizing shaft rotates accordingly. The second connecting rod 12 rotates parallel to the first connecting rod 11, and the third connecting rod 13 rises in the vertical direction. The left side of the Y-shaped pusher head 15 touches the lower left corner of the rectangular billet 6.

[0062] Under the push of the pusher head 15, the billet rotates around its lower right corner on the slide rail surface 21. The steel turning assembly 1 continues to move, and the third connecting rod 13 vertically raises the billet to leave the slide rail surface 21. Under the action of its own gravity, the billet topples onto the right side surface of the Y-shaped pusher head 15.

[0063] The oil cylinder moves in the reverse direction, the third connecting rod 13 descends vertically, the blank contacts the slide rail surface 21, and then the long board surface is parallel to the slide rail surface 21 of the collection table frame 2. The third connecting rod 13 continues to descend until it is lower than the slide rail surface 21;

[0064] The second pawl 32 pushes the blank to travel a fixed stroke in a row, and then under the push of the third pawl 33, it is grouped on the grouping surface 22 and then lifted and transported to the stacking area.

[0065] The blank offline collection device and collection method for compatible rectangular blanks in this embodiment optimize the flipping mode, achieve a 90° step-by-step flip in a limited space, reduce the impact force and improve stability, and avoid the noise and equipment loss caused by traditional continuous flipping; the structure is ingeniously designed, the lightweight flipping mechanism has high synchronism and strong adaptability to the installation space, and it is easy to implement when increasing or decreasing the production of rectangular blank sections on the existing continuous casting machine, with less investment. It can also reduce manual intervention through automatic linkage control, shorten the flipping time, and significantly improve the efficiency compared with traditional manual or semi-automatic equipment, with high reliability.

[0066] The above has schematically described the present invention and its implementation manners. This description is not restrictive, and what is shown in the drawings is only one of the implementation manners of the present invention. The actual structure and manufacturing steps are not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative work without departing from the purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A blank offline collection device compatible with rectangular billets, comprising a cooling bed, a collection bench for receiving rectangular billets at the discharge end of the cooling bed, and a pawl trolley installed in the collection bench. The pawl trolley is provided with a number of pawls along the advancing line of the rectangular billets, and is characterized in that, A steel - turning assembly is installed beside the collecting table frame between the second pawl and the third pawl. When the short - side surface of the rectangular billet is parallel to the slide - rail surface of the collecting table frame, the steel - turning assembly flips the rectangular billet so that the long - side surface is parallel to the slide - rail surface of the collecting table frame.

2. The blank offline collection device compatible with rectangular blanks according to claim 1, characterized in that: The steel - turning assembly includes a first connecting rod, a second connecting rod, a third connecting rod, a first long shaft and a second long shaft. The first connecting rod is hinged to the first long shaft at a first fixed point. The first connecting rod and the third connecting rod are hinged at a first moving point. The third connecting rod and the second connecting rod are hinged at a second moving point. The second connecting rod is hinged to the second long shaft at a second fixed point. One end of the third connecting rod is connected with a push head. The first fixed point and the second fixed point are collinear in the vertical direction. A driving device is also hinged on the first long shaft.

3. The blank offline collection device compatible with rectangular blanks according to claim 2, characterized in that: The push head is set as a straight - line type or a Y - type.

4. The blank offline collecting device compatible with rectangular blanks according to claim 3, characterized in that: The included angle of the Y - type push head is set as 100°±5°.

5. The blank offline collection device compatible with rectangular blanks according to claim 3, characterized in that: A plurality of the steel - turning assemblies are arranged in parallel. The first long shafts and the second long shafts of each steel - turning assembly are respectively connected into a first synchronous shaft and a second synchronous shaft through couplings.

6. The blank offline collection device compatible with rectangular blanks according to claim 5, wherein: An image feedback device is additionally arranged around the collecting table frame.

7. A collecting method of the billet offline collecting device compatible with rectangular billets according to claim 6, characterized in that: When the continuous casting billet is a rectangular billet with a small cross - section, the rectangular billet blank goes from the cooling bed to the collecting table frame. The oil cylinder drives the pawl trolley to move. The blank is pushed by the first pawl to travel a fixed stroke distance to the position between the second pawl and the third pawl. In the initial position, the push head of the third connecting rod is lower than the slide - rail surface of the collecting table frame. When the image feedback device identifies that the short - side surface of the blank is parallel to the slide - rail surface of the collecting table frame, the first synchronous shaft rotates. The first connecting rod fixed on the first synchronous shaft rotates accordingly. The second connecting rod rotates parallel to the first connecting rod. The third connecting rod rises in the vertical direction. The left side of the straight - line type push head touches the lower left corner of the rectangular billet. Under the push of the push head, the blank rotates around its lower right corner on the slide - rail surface. Finally, under the action of its own gravity, the long side of the rectangular billet becomes parallel to the slide - rail surface of the collecting table frame. The second pawl pushes the blank to travel a fixed stroke to form a row. Then, under the push of the third pawl, the blank is grouped on the grouping surface and then lifted and transported to the stacking area.

8. A collecting method of the billet offline collecting device compatible with rectangular billets according to claim 6, characterized in that: When the continuous casting billet is a rectangular billet with a large cross - section, the rectangular billet blank goes from the cooling bed to the collecting table frame. The oil cylinder drives the pawl trolley to move. The blank is pushed by the first pawl to travel a fixed stroke distance to the position between the second pawl and the third pawl. In the initial position, the push head of the third connecting rod is lower than the slide - rail surface of the collecting table frame. When the image feedback device identifies that the short - side surface of the blank is parallel to the slide - rail surface of the collecting table frame, the first synchronous shaft rotates. The first connecting rod fixed on the first synchronous shaft rotates accordingly. The second connecting rod rotates parallel to the first connecting rod. The third connecting rod rises in the vertical direction. The left side of the Y - type push head touches the lower left corner of the rectangular billet. Under the push of the push head, the blank rotates around its lower right corner on the slide - rail surface. The steel - turning assembly continues to move. The third connecting rod vertically raises the blank to leave the slide - rail surface. Under the action of its own gravity, the blank topples onto the right - hand side surface of the Y - type push head. The oil cylinder moves in the reverse direction. The third connecting rod vertically descends. The blank touches the slide - rail surface and then the long - side surface is parallel to the slide - rail surface of the collecting table frame. The third connecting rod continues to descend until it is lower than the slide - rail surface. The second pawl pushes the blank to travel a fixed stroke in a row, and then, under the push of the third pawl, it is marshaled on the marshalling surface and then lifted and transported to the stacking area.

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