Bar rolled steel finishing collection system and collection method

Abstract

The present invention relates to a bar steel rolling finishing collection system and a collection method thereof, belonging to the field of small bar steel rolling finishing technology in the metallurgical industry. The technical solution is: a bar buffer device is provided in a U-shaped collection trough (26) and at the upper part of the U-shaped collection trough (26), and a bar end trimming device is provided on one side of the U-shaped collection trough (26); the bar buffer device comprises a left holding finger (6), a right holding finger (7) and a holding finger driving cylinder (9), and one end of the left holding finger (6) and the right holding finger (7) are respectively rotatably connected to the two corresponding side walls of the U-shaped collection trough (26); the bar end trimming device comprises an end trimming baffle (13), a guide rod (15) and an end trimming baffle driving cylinder (16). The beneficial effects of the present invention are: reducing the bar drop, preventing the bar from bending excessively, bumping and uneven ends due to bar crossing and winding during the collection process.

Description

Technical Field

[0001] The invention relates to a bar steel rolling finishing collection system and a collection method thereof, belonging to the technical field of small bar steel rolling finishing in the metallurgical industry. Background Art

[0002] With the increasing demand for high-end specialty steel in the domestic market, users are placing increasingly higher demands on product performance and inherent quality. The finishing collection area is a critical production process in bar mills. After rolling on the bar line, the bars travel a long distance before entering the vertical dropper. Due to factors such as bar length and curvature, the bars are often not aligned parallel to each other and fall into a relatively concentrated position before reaching the end of the chain conveyor and dropping into the vertical dropper. This results in cross-linking and entanglement between the bars.

[0003] A bar dropper is a device used in small bar mills to collect the cut-to-length bars after they have been cut with a cut-to-length shear. Based on their weight, a certain number of bars are collected and bundled into a single unit for easy storage and transportation.

[0004] Refer to the attached Figure 1 The existing steel dropper mainly includes a transmission shaft, transmission gear, support arm, chain, transmission belt, transmission motor and driven sprocket. The transmission motor is connected to the transmission gear through the transmission belt. The transmission gear is located on the upper side of the U-shaped collection trough, and the driven sprocket is located on the lower side of the U-shaped collection trough. The transmission gear and the driven sprocket are connected by a chain transmission. The length of the support arm matches the width of the U-shaped collection trough, and one end of the support arm is fixed to the chain. After the bar is transported to the end of the chain conveyor, it directly falls onto the support arm and then falls onto the conveyor roller at the bottom of the collection trough. This type of steel dropper has the following main problems:

[0005] (1) The drop is large, and the bars are not parallel before and during the falling process due to impact and other reasons, that is, the bars are crossed and entangled. The smaller the diameter, the more obvious it is. If the bars are bundled and packaged, if entanglement occurs, the curvature of the bars will increase, the product quality cannot be guaranteed, and the use of downstream high-end customers will be affected;

[0006] (2) The bundles fall into the same position for a long time, resulting in poor and uneven bundle shape. The bundles cannot be evenly divided into two positions on the cross section, which affects the packaging quality and the company's product image.

[0007] (3) The vertical drop is large. When the bars fall, they are easily bumped or scratched against each other or against the supporting arm of the steel dropper, which affects the surface quality of the product. However, small-sized bars often have very high requirements for product surface quality. Otherwise, it will have a great impact on the quality and life of the products processed by downstream customers.

[0008] (4) The vertical drop is large, which has a great impact on the equipment. Especially when the specifications are large, there is no buffer mechanism, which can easily affect the life of the steel dropper transmission mechanism and support arm and other components;

[0009] (5) Because the bars are not parallel before and after falling into the steel dropper, the ends of the bars are uneven, affecting the quality of bundling and packaging, as well as the safety during lifting and transportation. Summary of the Invention

[0010] The purpose of the present invention is to provide a bar rolling finishing collection system and a collection method thereof, so as to reduce the drop of the bars, prevent the bars from being bent excessively, bumped, and uneven at the ends due to crossing and winding of the bars during the collection process, and solve the problems existing in the background technology.

[0011] The technical solution of the present invention is:

[0012] The U-shaped collecting trough is provided with a conveying roller at the bottom of the U-shaped collecting trough. The vertical steel dropping machine comprises a transmission shaft, a transmission gear, a supporting arm, a chain, a transmission belt, a transmission motor and a driven sprocket. The transmission motor is connected to the transmission gear through a transmission belt. The transmission gear is located on the upper side of the U-shaped collecting trough, and the driven sprocket is located on the lower side of the U-shaped collecting trough. The transmission gear and the driven sprocket are connected through chain transmission. The length of the supporting arm matches the width of the U-shaped collecting trough. One end of the supporting arm is fixed on the chain. The U-shaped collecting trough is located in the bottom of the U-shaped collecting trough. A rod buffer device is provided on the upper part of the U-shaped collecting trough, and a rod trimming device is provided on one side of the U-shaped collecting trough; the rod buffer device comprises a left holding finger, a right holding finger and a holding finger driving cylinder, the left holding finger and the right holding finger are long strips, one end of the left holding finger and the right holding finger are respectively rotatably connected to the two side walls corresponding to the U-shaped collecting trough, and the other ends of the left holding finger and the right holding finger are respectively connected to the piston rod of the holding finger driving cylinder; the rod trimming device comprises a trimming baffle, a guide rod and a trimming baffle driving cylinder, the trimming baffle is vertically provided on one side of the U-shaped collecting trough, the piston rod of the trimming baffle driving cylinder is drivingly connected to the trimming baffle, and a guide rod is provided between the cylinder body of the trimming baffle driving cylinder and the trimming baffle.

[0013] The lengths of the left holding fingers and the right holding fingers in the bar buffer device match the width of the U-shaped collecting groove.

[0014] The lengths of the left holding fingers and the right holding fingers in the bar buffer device are smaller than the width of the U-shaped collecting groove and larger than half of the width of the U-shaped collecting groove.

[0015] The left holding finger and the right holding finger in the bar buffer device are close to the unloading position at the end of the chain conveyor.

[0016] The guide rod in the bar trimming device is in a horizontal state, and the trimming baffle is slidably connected to the guide rod.

[0017] A method for collecting and finishing rolled steel bars adopts a bar-rolled steel finishing and collecting system defined above. When the bars are transported to the end through a chain conveyor, the left holding finger and the right holding finger are in a horizontal state, i.e., a closed state, under the action of a holding finger driving cylinder. Then the bars fall onto the left holding finger and the right holding finger. When the supporting arm on the chain rotates to the bottom of the left holding finger and the right holding finger, under the action of the holding finger driving cylinder, the left holding finger and the right holding finger gradually open and slowly place the bars onto the supporting arm. The supporting arm places the bars onto the conveyor roller as the chain drives the bars. Finally, the bars are aligned through a bar alignment device and then bundled and packaged.

[0018] The beneficial effects of the present invention are: reducing the drop of the bars, preventing the bars from being bent excessively, bumped, and having uneven ends due to the crossing and entanglement of the bars during the collection process. The bars are neat, consistent, and smooth after bundling, and the ends are flush, which effectively improves the packaging quality and can meet the requirements of the internal control standards for packaging, effectively improves work efficiency, avoids the breaking, sorting, and re-bundling of problematic bars, shortens delivery time, and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the main view of background technology;

[0020] Figure 2 It is the front view of the present invention;

[0021] Figure 3 It is a left side view of the present invention;

[0022] Figure 4 It is a top view of the present invention;

[0023] Figure 5 This is a front view of the vertical steel drop machine including the retaining finger of the present invention;

[0024] Figure 6 This is an enlarged left view of a single unit of the vertical steel drop machine of the present invention;

[0025] Figure 7 It is an enlarged top view of a single group of the vertical steel drop machine of the present invention;

[0026] Figure 8 It is a front view of the retaining finger of the present invention;

[0027] Figure 9 It is a left view of the retaining finger of the present invention;

[0028] Figure 10 is a top view of the retaining finger of the present invention;

[0029] Figure 11 This is a schematic diagram of the left holding finger in a high position state of the present invention;

[0030] Figure 12 This is a schematic diagram of the left holding finger in the low position state of the present invention;

[0031] Figure 13 This is a top view of a single unit of the vertical steel drop machine including the retaining fingers of the present invention;

[0032] Figure 14 This is a front view of the end trimming device of the present invention;

[0033] Figure 15 1. It is a top view of the end trimming device of the present invention;

[0034] In the figure: vertical steel dropper 1, transmission shaft 2, transmission gear 3, supporting arm 4, chain 5, left holding finger 6, right holding finger 7, cylinder base fixed end 8, holding finger driving cylinder 9, cylinder piston rod 10, piston rod holding finger connecting shaft 11, holding finger fixed shaft 12, end baffle 13, piston rod 14, guide rod 15, end baffle driving cylinder 16, transmission belt 17, transmission wheel 18, transmission motor 19, motor base 20, roller motor 21, steel dropper base 22, conveyor roller bearing seat 23, conveyor roller 24, bundled bars 25, collecting trough 26, detection grating 27, bars to be collected 28, supporting arm fixing pin 29, wheel 30, U-shaped groove guide 31, main body steel structure 32, end baffle base 33, chain conveyor 34. DETAILED DESCRIPTION

[0035] The present invention will be further described below with reference to the accompanying drawings and through examples.

[0036] Refer to the attached Figure 2-15The conveyor belt 24 is provided with a plurality of collecting troughs 26 arranged side by side and a vertical steel dropping machine 1 matched with each collecting trough 26. The collecting trough 26 is U-shaped, and the bottom of the U-shaped collecting trough 26 is provided with a conveying roller 24. The vertical steel dropping machine 1 includes a transmission shaft 2, a transmission gear 3, a supporting arm 4, a chain 5, a transmission belt 17, a transmission motor 19 and a driven sprocket. The transmission motor 19 is driven and connected to the transmission gear 3 through the transmission belt 17. The transmission gear 3 is located on the upper side of the U-shaped collecting trough 26, and the driven sprocket is located on the lower side of the U-shaped collecting trough 26. The transmission gear 3 and the driven sprocket are connected by the chain 5. The length of the supporting arm 4 matches the groove width of the U-shaped collecting trough 26. One end of the supporting arm 4 is fixed on the chain 5. A rod buffer device is provided in the collecting trough 26 and at the upper part of the U-shaped collecting trough 26, and a rod trimming device is provided on one side of the U-shaped collecting trough 26; the rod buffer device includes a left holding finger 6, a right holding finger 7 and a holding finger driving cylinder 9, the left holding finger 6 and the right holding finger 7 are long strips, one end of the left holding finger 6 and the right holding finger 7 are respectively rotatably connected to the two corresponding side walls of the U-shaped collecting trough 26, and the other ends of the left holding finger 6 and the right holding finger 7 are respectively connected to the piston rod of the holding finger driving cylinder 9; the rod trimming device includes a trimming baffle 13, a guide rod 15 and a trimming baffle driving cylinder 16, the trimming baffle 13 is vertically provided on one side of the U-shaped collecting trough 26, the piston rod of the trimming baffle driving cylinder 16 is drivingly connected to the trimming baffle 13, and a guide rod 15 is provided between the cylinder body of the trimming baffle driving cylinder 16 and the trimming baffle 13.

[0037] In this embodiment, refer to the attached Figure 2-15 There are 12 vertical steel droppers 1 (including 12 U-shaped collection troughs 26), with a spacing of approximately 1.25 meters between adjacent ones, and a total length of approximately 14 meters. The spacing and total length can be adjusted accordingly based on the specifications and length of the product being produced. Each group of six steel droppers 1 is powered by a transmission motor via a belt, with a total of two motors.

[0038] The steel dropper transmission system is installed on the upper side of the collection tank 26. It is connected by four transmission shafts through a rigid coupling and driven by a motor. A passive sprocket is installed on the lower side of each collection tank 26, and the steel dropper chain is driven by the transmission sprocket to perform periodic motion.

[0039] Three supporting arms 4 are symmetrically installed on the chain 5 of each steel dropper. The roots of the supporting arms 4 are fixed to the chain links through pins. A wheel is installed on both sides of the pin. The wheel is guided by the U-shaped groove of the column to play a guiding and stabilizing role.

[0040] A pair of retaining fingers, namely left retaining finger 6 and right retaining finger 7, are mounted on the sidewalls of each U-shaped collecting trough 26. The retaining fingers are driven by a pneumatic cylinder. The length of the left retaining finger 6 and the right retaining finger 7 is less than the width of the U-shaped collecting trough 26, but greater than half the width of the U-shaped collecting trough 26.

[0041] All holding fingers are divided into two groups in the longitudinal direction (lengthwise), with six pairs forming one group. Each group can operate independently or in a synchronized interlocking manner. This corresponds to different steel product lengths. For example, for a product of approximately 6 meters, only one set of holding fingers needs to operate, while the other set can remain idle, meaning it is in a stopped state. For products of approximately 12 meters in length, two sets of holding fingers need to be interlocked, with all fingers operating simultaneously and in unison. Specific control is flexibly implemented based on production conditions.

[0042] An alignment baffle is installed at one end of the collecting tank 26.

[0043] The steel dropper 1 is driven by the transmission shaft 2 to rotate the transmission gear 3, and the transmission gear 3 then drives the chain 5 above it to move, and the chain 5 drives the supporting arm 4 fixed at one end thereon to move. The fixed end of the root of the supporting arm 4 is processed into a shape similar to the shape of an outer link in the chain 5, and is put on a link from the outside. Two circular holes are arranged as connection points, and the root of the supporting arm 4 is fixed to the chain 5 by two anchor bolts. The fixation is firm and reliable, and the steel dropper is driven to move together. When the supporting arm 4 moves with the chain 5 to the steel supporting working position of the steel dropper collecting trough 26, a special supporting arm position detection grating detects the corresponding position signal, controls the transmission shaft 2 to stop moving, and ensures that the supporting arm 4 stops at the corresponding steel collection and supporting working position.

[0044] When a layer of bars cut by the fixed-length shear of the small-size bar rolling line is transported to the end through the chain conveyor 34, the movable ends of the left holding finger 6 and the right holding finger 7 are both in the high position (i.e., closed state), and the detection proximity switch on the chain conveyor detects that steel has passed, and then delays for 3 seconds (time is adjustable) for the bars to fall onto the left holding finger 6 and the right holding finger 7, and be temporarily supported by the two holding fingers. Then, the left holding finger 6 is opened first (the holding finger cylinder 9 is actuated at the same time, the piston rod 10 is retracted, and the right holding finger 7 is dropped to the low position), and the layer of bars is placed on the supporting arm 4 of the steel dropper so that its landing point is located slightly to the left of the middle of the collecting trough 26, and then delays for 3 seconds (time is adjustable) for the holding finger cylinder 9 to act again, and all the left holding fingers 6 are lifted to the high position at the same time, that is, the holding fingers are all in the closed state. At the same time, the end baffle cylinder 16 is actuated, and the end baffle 13 is driven by the piston rod 14. When the second layer of bars on the chain conveyor comes over, the proximity switch is detected to detect that there is steel coming over, and then the bars fall onto the two holding fingers after a delay of 3 seconds (the time is adjustable). After that, the right holding finger 7 is opened at the same time (the cylinder 9 is actuated at the same time, the piston rod 10 is retracted, and the right holding finger 7 is dropped to a low position). The layer of bars is placed on the supporting arm 4 of the steel dropper so that its landing point is located a little to the right of the middle of the collecting trough 26. Then the finger holding cylinder 9 is actuated again after a delay of 3 seconds (the time is adjustable) to lift the right holding finger 7 to a high position at the same time, that is, the two holding fingers are in a closed (supporting steel) state. At the same time, the end baffle cylinder 16 is actuated, and the piston rod 14 drives the end baffle 13 to push the second layer of bars to the end position according to the pre-designed cylinder piston rod extension, and the end baffle 13 is retracted. The two holding fingers alternately open and lower the bars, creating a more parallel path through the cushioning provided by the two holding fingers, minimizing the drop and preventing the bars from crossing and tangling, thus reducing damage from bumps. The fingers also divide the bars into two drop points across the width of the collection trough, effectively subdividing them into two smaller areas. These alternately flatten and collect the bars, ensuring a more even and smooth distribution of the bars, especially small-sized bars, across the entire cross-section of the trough. When the third layer of bars arrives for collection, the first action is repeated periodically, with all movements of the holding fingers and the flushing baffle being automatically controlled.

[0045] After multiple batches and multiple bars reach a certain number by maintaining finger buffering and smoothly falling onto the supporting arm of the steel dropper, the transmission motor 19 located on the motor base 20 drives the transmission wheel 18 to drive the transmission belt 17 to drive the vertical steel dropper chain 5 located on the steel dropper base 22 to rotate, thereby driving the supporting arm 4 to move downward until the bundled bars (bars) 25 connected to the supporting arm are slowly placed on the conveyor roller 24, and then the roller motor 21 drives the conveyor roller 24 tightly fixed by the conveyor roller bearing seat 23 to slowly open the bars above, and after opening (moving) to the bundling station, the bundling bar (bars) 25 in bulk state are bundled and packaged by the baler.

Claims

1. A bar steel rolling finishing collection system, comprising a vertical steel dropper (1), a conveying roller (24), a collecting trough (26) and a chain conveyor (34), wherein the end of the chain conveyor (34) is provided with a plurality of collecting troughs (26) arranged side by side and a vertical steel dropper (1) matched with each collecting trough (26), wherein the collecting trough (26) is U-shaped, and a conveying roller (24) is provided at the bottom of the U-shaped collecting trough (26), wherein the vertical steel dropper (1) comprises a transmission shaft (2), a transmission gear (3), a supporting arm (4), A chain (5), a transmission belt (17), a transmission motor (19) and a driven sprocket, wherein the transmission motor (19) is connected to the transmission gear (3) through the transmission belt (17), the transmission gear (3) is located on the upper side of the U-shaped collecting trough (26), the driven sprocket is located on the lower side of the U-shaped collecting trough (26), the transmission gear (3) and the driven sprocket are connected to each other through the chain (5), the length of the supporting arm (4) matches the width of the U-shaped collecting trough (26), and one end of the supporting arm (4) is fixed to the chain (5), characterized in that: A bar buffer device is provided in the U-shaped collecting trough (26) and at the upper part of the U-shaped collecting trough (26), and a bar end-aligning device is provided on one side of the U-shaped collecting trough (26); the bar buffer device comprises a left holding finger (6), a right holding finger (7) and a holding finger driving cylinder (9), the left holding finger (6) and the right holding finger (7) are long strips, one end of the left holding finger (6) and the right holding finger (7) are respectively rotatably connected to the two corresponding side walls of the U-shaped collecting trough (26), the left holding finger ( 6) and the other end of the right holding finger (7) are respectively connected to the piston rod of the holding finger driving cylinder (9); the bar end trimming device comprises an end trimming baffle (13), a guide rod (15) and an end trimming baffle driving cylinder (16), the end trimming baffle (13) is vertically arranged on one side of the U-shaped collecting trough (26), the piston rod of the end trimming baffle driving cylinder (16) is drivingly connected to the end trimming baffle (13), and a guide rod (15) is provided between the cylinder body of the end trimming baffle driving cylinder (16) and the end trimming baffle (13).

2. The bar rolling finishing collection system according to claim 1, characterized in that: The lengths of the left retaining finger (6) and the right retaining finger (7) in the bar buffer device match the width of the U-shaped collecting groove (26).

3. The bar rolling finishing collection system according to claim 2, characterized in that: The lengths of the left retaining finger (6) and the right retaining finger (7) in the bar buffer device are less than the width of the U-shaped collecting groove (26) and greater than half the width of the U-shaped collecting groove (26).

4. The bar steel rolling finishing collection system according to claim 1, characterized in that: The left holding finger (6) and the right holding finger (7) in the bar buffer device are close to the unloading position at the end of the chain conveyor (34).

5. The bar rolling finishing collection system according to claim 1, characterized in that: The guide rod (15) in the bar trimming device is in a horizontal state, and the trimming baffle (13) is slidably connected to the guide rod (15).

6. A bar rolling finishing collection method, characterized in that: A bar steel rolling finishing and collection system as defined in any one of claims 1 to 5 is adopted. When the bars are transported to the end through a chain conveyor (34), the left holding finger (6) and the right holding finger (7) are in a horizontal state, i.e., a closed state, under the action of the holding finger driving cylinder (9), and then the bars fall onto the left holding finger (6) and the right holding finger (7). When the supporting arm (4) on the chain (5) rotates to the bottom of the left holding finger (6) and the right holding finger (7), under the action of the holding finger driving cylinder (9), the left holding finger (6) and the right holding finger (7) gradually open and slowly place the bars onto the supporting arm (4). The supporting arm (4) places the bars onto the conveyor roller (24) as driven by the chain (5), and finally the bars are aligned through the bar alignment device and then bundled and packaged.

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