Unqualified product classification and removal collection line for section steel

Abstract

The present application belongs to the technical field of hot-rolled section steel finishing, and discloses a section steel unqualified product classification and removal collection production line capable of improving production rhythm. The production line comprises a length detection device, a first inspection rack, a second inspection rack, a short-length product removal collection rack, a quality defect product removal collection rack and a stacking rack. When a rolled piece is detected as a short-length product by the length detection device before entering the first inspection rack, the rolled piece enters the second inspection rack through the first inspection rack, the short-length product is removed and collected through the short-length product removal collection rack, the remaining rolled pieces are removed and collected for quality defect products through the quality defect product removal collection rack, and the qualified products enter the stacking rack. When the rolled piece is not detected as a short-length product by the length detection device before entering the first inspection rack, the rolled piece enters the first inspection rack or the second inspection rack, the quality defect products in the rolled piece are removed and collected through the quality defect product removal collection rack, and the qualified products enter the stacking rack.

Description

Technical Field

[0001] This invention relates to the field of hot-rolled steel finishing technology, specifically to a production line for classifying, rejecting, and collecting substandard steel products. Background Technology

[0002] In the finishing production line of hot-rolled steel sections, after long-length cooling and straightening, the hot-rolled steel sections are cold-sawed into rolled pieces of the required fixed length. Before delivery, defective products need to be removed from the rolled pieces to prevent them from mixing with qualified products, thereby improving the quality of delivered products. Defective products mainly include those with quality defects such as surface and end quality issues, as well as short-length products with length problems.

[0003] In existing steel profile defect rejection production lines, multiple interconnected inspection racks, defective product collection racks, and stacking racks are typically included. Defective product conveyor rollers are installed beneath the inspection racks to remove and transport defective products from the inspection racks to the defective product collection racks, while qualified products are transported from the inspection racks to the stacking racks for stacking. When multiple inspection racks are connected, if short-length or defective products are rejected from one inspection rack, other inspection racks must pause transport, slowing down the production pace and impacting the overall production line capacity. Furthermore, the fact that short-length and defective products are collected on the same defective product collection rack hinders their subsequent separation and requires further manual intervention, which not only affects the production pace but also increases labor costs and intensity. Summary of the Invention

[0004] To improve production speed, this invention proposes a production line for classifying, rejecting, and collecting substandard steel products.

[0005] The steel section defective product classification and collection production line according to the present invention includes: a length detection device, a first inspection stand, a second inspection stand, a short-length product rejection and collection stand, a quality defect product rejection and collection stand, and a stacking stand. When the length detection device detects short-length products in the rolled piece before it enters the first inspection stand, the rolled piece enters the second inspection stand as a whole via the first inspection stand. Short-length products in the rolled piece entering the second inspection stand are rejected and collected via the short-length product rejection and collection stand, while the remaining rolled pieces are rejected and collected via the quality defect product rejection and collection stand. Qualified products then enter the stacking stand for stacking. Conversely, when the length detection device does not detect short-length products in the rolled piece before it enters the first inspection stand, the rolled piece enters either the first or second inspection stand. Quality defect products in the rolled piece are rejected and collected via the quality defect product rejection and collection stand, while qualified products enter the stacking stand.

[0006] Furthermore, the steel section defective product classification and rejection collection production line includes a first transport roller conveyor and a second transport roller conveyor arranged in parallel. The front end of the first transport roller conveyor is connected to the output roller conveyor of the length-cutting machine, and the second transport roller conveyor is connected to the input roller conveyor of the palletizing frame. The first inspection frame and the second inspection frame are located between the first transport roller conveyor and the second transport roller conveyor. The defective product rejection collection frame is connected to the end of the first inspection frame near the second transport roller conveyor, and the short-length product rejection collection frame is connected to the end of the second inspection frame near the second transport roller conveyor.

[0007] Furthermore, the steel section non-conforming product classification and rejection collection production line also includes a first preparatory stand located between the first inspection stand and the second inspection stand.

[0008] Furthermore, the number of preparatory platforms is multiple, arranged sequentially.

[0009] Furthermore, the palletizing table is located on the side of the second transport roller conveyor closer to the first inspection table.

[0010] Furthermore, the palletizing table includes a first palletizing table and a second palletizing table located at both ends of the second transport roller conveyor, and a first inspection table and a second inspection table located between the first palletizing table and the second palletizing table.

[0011] Furthermore, the defective product rejection and collection platform is equipped with grinding devices on both sides for grinding defective products with end defects.

[0012] Furthermore, a first steel separating device and an automatic identification device or manual inspection process for defective products are provided on the side of the first inspection stand near the defective product rejection and collection stand, for identifying defective products in the rolled product and separating defective products from qualified products.

[0013] Furthermore, a second steel separating device, an automatic short-length identification device, an automatic defective product identification device, or a manual inspection process are provided on the side of the second inspection stand near the short-length product rejection and collection stand to identify short-length products in the rolled product and separate them from other rolled products.

[0014] Furthermore, both defective products and short-length products in the defective product rejection collection rack are transported to the palletizing rack via roller conveyors.

[0015] Compared with existing technologies, the steel section defective product classification and rejection collection production line of the present invention, by setting up a length detection device, and adding defective product rejection collection platforms and short-length product rejection collection platforms at the first and second inspection platforms respectively, and connecting the platforms through conveyor rollers, allows the rolled pieces to travel to the first or second inspection platform through different paths, and to reject and collect short-length products and defective products at different inspection platforms. This rejection and collection method enables short-length products and defective products to be collected and processed in batches more rationally and efficiently, avoiding the mixing of qualified and unqualified products, reducing manual intervention, improving the processing efficiency of short-length and unqualified products, thereby increasing the production rhythm and fully releasing the production line's capacity. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the steel profile non-conforming product classification and rejection collection production line according to the first embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the steel profile non-conforming product classification and rejection collection production line according to the second embodiment of the present invention. Detailed Implementation

[0018] To better understand the purpose, structure, and function of this invention, the invention will be described in further detail below with reference to the accompanying drawings.

[0019] Figure 1 and Figure 2 The structure of a steel profile non-conforming product sorting and rejection collection production line 100 according to an embodiment of the present invention is shown. For example... Figure 1 and Figure 2 As shown, the non-conforming steel product classification and collection production line 100 may include: a length detection device 1, a first inspection stand 2, a second inspection stand 3, a short-length product rejection and collection stand 4, a quality defect product rejection and collection stand 5, and a stacking stand 6. Specifically, when the length detection device 1 detects short-length products in the rolled piece before it enters the first inspection stand 2, the rolled piece passes through the first inspection stand 2 and enters the second inspection stand 3 as a whole. The short-length products in the rolled piece entering the second inspection stand 3 are rejected and collected by the short-length product rejection and collection stand 4, while the remaining rolled pieces pass through the quality defect product rejection and collection stand 5 to remove and collect the quality defect products. The qualified products then enter the stacking stand 6 for stacking. Conversely, when the length detection device 1 does not detect short-length products in the rolled piece before it enters the first inspection stand 2, the rolled piece enters either the first inspection stand 2 or the second inspection stand 3. The quality defect products in the rolled piece are rejected and collected by the quality defect product rejection and collection stand 5, while the qualified products enter the stacking stand 6.

[0020] In the steel section defective product classification and collection production line 100 of this embodiment of the invention, the arrow direction shown in the figure represents the transport direction of the rolled pieces. Groups of steel sections are sequentially cut to length by a cold saw 20 and a length-setting machine 30 to form rolled pieces of the required length. These rolled pieces may contain defective products (including surface defects and end defects), short-length products, and qualified products. To separately remove and collect defective and short-length products, the length of the rolled pieces is detected by a length detection device 1 before they enter the first inspection stand 2. If a short-length product is detected in one of the rolled pieces in the group, the group of rolled pieces is transported to the second inspection stand 2. The corresponding short-length product removal and collection stand 4 can remove and collect the short-length products. After the short-length products are removed and collected, defective products may still be mixed in with the rolled pieces. In the first inspection stand 2, defective products and qualified products are transported to the defective product rejection collection stand 5. The defective products are rejected and collected, while the qualified products are transported to the stacking stand 6. If no short-length products are detected before the rolled piece enters the first inspection stand 2, it means that the rolled piece contains only defective products and qualified products. The rolled piece can enter the first inspection stand 2 or the second inspection stand 3. In this case, the defective products in the first inspection stand 2 only need to be rejected and collected by the defective product rejection collection stand 5 corresponding to the first inspection stand 2. When the defective products in the second inspection stand 3 are transported to the vicinity of the defective product rejection collection stand 5 corresponding to the first inspection stand 2 via the roller conveyor, the defective products are rejected and collected by the defective product rejection collection stand 5, while the qualified products can be directly transported to the stacking stand 6.

[0021] In the steel section defective product classification and rejection collection production line 100 of this invention embodiment, by adding a length detection device 1, and by adding a defective product rejection collection platform 5 and a short-length product rejection collection platform 4 at the first inspection platform 2 and the second inspection platform 3 respectively, the platforms can be connected by conveyor rollers, so that the rolled pieces can travel to the first inspection platform 2 or the second inspection platform 3 through different paths, and the corresponding short-length products and defective products are rejected and collected at different inspection platforms. This rejection and collection method allows short-length products and defective products to be collected and processed in batches in a more reasonable and efficient manner, avoiding the mixing of qualified and unqualified products, reducing manual intervention, improving the processing efficiency of short-length and unqualified products, thereby increasing the production rhythm and fully releasing the production line capacity.

[0022] In such Figure 1 and Figure 2In the preferred embodiment shown, the steel section defective product classification and rejection collection production line 100 may include a first transport roller 8 and a second transport roller 9 arranged in parallel. The front end of the first transport roller 8 is connected to the output roller of the length-cutting machine 30, and the second transport roller 9 is connected to the input roller of the palletizing table 6. The first inspection table 2 and the second inspection table 3 are located between the first transport roller 8 and the second transport roller 9. The defective product rejection collection table 5 is connected to the end of the first inspection table 2 near the second transport roller 9, and the short-length product rejection collection table 4 is connected to the end of the second inspection table 3 near the second transport roller 9. In this embodiment, the first inspection table 2, the second inspection table 3, the short-length product rejection and collection table 4, and the quality defect product rejection and collection table 5 are connected by the first transport roller conveyor 8 and the second transport roller conveyor 9, so that the rolled parts can travel to the first inspection table 2 or the second inspection table 3 through different paths, and quality defect products and short-length products are rejected and collected at the end of the corresponding inspection table. At the same time, qualified products in each inspection table can be transported to the stacking table 6.

[0023] Furthermore, such as Figure 1 and Figure 2 As shown, the steel section defective product classification and rejection collection production line 100 may further include a first preparatory stand 7 located between the first inspection stand 2 and the second inspection stand 3. The function of this first preparatory stand 7 is the same as that of the first inspection stand 2 and the second inspection stand 3. Short-length products typically do not appear in two consecutive groups. If one group appears, the rolled pieces in that group are directly transported to the second inspection stand 3 for processing, and subsequent rolled pieces enter the first inspection stand 2 and the first preparatory stand for inspection. If there are no short-length products, the rolled pieces sequentially enter the three inspection stands for inspection. However, if two consecutive groups of short-length products appear, the first preparatory stand 7 can be used to provide a waiting position for rolled pieces from the first inspection stand 2 containing short-length products when rolled pieces are present on the second inspection stand 3, thus allowing the group of rolled pieces containing short-length products to enter the second inspection stand 3 in an orderly and continuous manner to improve production speed. Preferably, the number of first preparatory stands 7 can be set to multiple sets arranged sequentially according to actual production needs.

[0024] Furthermore, the steel section defective product classification and rejection collection production line 100 also includes a second preparatory stand (not shown in the figure) located before the first inspection stand 2. This second preparatory stand is used to provide a waiting position for the cut-to-length rolled pieces when there are rolled pieces on the first inspection stand 2, so that the cut-to-length rolled pieces can enter the first inspection stand 2 in an orderly and continuous manner, so as to facilitate smoother subsequent different travel paths of the rolled pieces, thereby helping to further improve the production rhythm.

[0025] In such Figure 1In the preferred embodiment shown, the palletizing table 6 is located on the side of the second transport roller conveyor 9 closest to the first inspection table 2. In this embodiment, the steel section defective product sorting and rejection collection production line 100 is a single production line, and the rolled pieces can only be processed along... Figure 1 Following the direction of the arrows shown, this growth line helps reduce the footprint. And in... Figure 2 In the preferred embodiment shown, the palletizing frame 6 may include a first palletizing frame and a second palletizing frame located at both ends of the second transport roller conveyor 9, with a first inspection frame 2 and a second inspection frame 3 located between the first and second palletizing frames. In this embodiment, the steel section defective product classification and rejection collection production line 100 can have two selectable production lines. The process of conveying the rolled pieces to the first palletizing frame on the left and to the second palletizing frame on the right can be achieved by controlling the forward and reverse rotation of the second transport roller conveyor 9. This configuration not only improves palletizing efficiency but also provides more travel paths for the steel section defective product classification and rejection collection production line 100 to adapt to different production rhythms.

[0026] According to the present invention, in such Figure 1 and Figure 2 In the preferred embodiment shown, the defective product rejection and collection platform 5 may also be equipped with grinding devices (not shown in the figure) on both sides for grinding defective products with end defects. Since the length of the defective products is acceptable, and the platform contains products with surface defects and end defects, the end defects only have end defects. Therefore, these defective products can still form acceptable products after the ends are ground by the grinding device. By processing and collecting these defective products, the yield of acceptable products can be improved.

[0027] In such Figure 1 and Figure 2 In the preferred embodiment shown, a first steel separating device and an automatic defective product identification device or a manual inspection process (not shown in the figure) may be provided on the side of the first inspection stand 2 near the defective product rejection collection stand 5 to identify defective products in the rolled product and separate them from qualified products. The first steel separating device may include an existing lifting steel blocking device and a lifting chain. The lifting steel blocking device is used to separate defective products from qualified products, and the lifting chain is used to transport defective products to the defective product rejection collection stand 5.

[0028] Similarly, a second steel separating device, an automatic short-length identification device, an automatic defective product identification device, or a manual inspection process (not shown in the figure) can be installed on the side of the second inspection stand 3 near the short-length product rejection collection stand 4 to identify short-length products in the rolled product and separate them from other rolled products. The second steel separating device may also include an existing lifting steel blocking device and lifting chain. The lifting steel blocking device is used to separate short-length products from qualified products and defective products, and the lifting chain is used to transport short-length products to the short-length rejection collection stand 4.

[0029] According to the present invention, defective products in the defective product rejection collection table 5 and short-length products in the short-length product rejection collection table 4 are both transported to the palletizing table via roller conveyors.

[0030] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0031] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions 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, and they should all be covered within the scope of the claims and specification of the present invention. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A production line for classifying, rejecting, and collecting substandard steel profiles, characterized in that, The system includes a length detection device, a first inspection stand, a second inspection stand, a short-length product rejection and collection stand, a defective product rejection and collection stand, and a stacking stand. When a rolled piece, after being cut to length, is detected by the length detection device to contain short-length products before entering the first inspection stand, the rolled piece passes through the first inspection stand and enters the second inspection stand as a whole. Short-length products among the rolled pieces entering the second inspection stand are rejected and collected by the short-length product rejection and collection stand. The remaining rolled pieces are rejected and collected by the defective product rejection and collection stand, while qualified products enter the stacking stand for stacking. Conversely, when a rolled piece is not detected by the length detection device before entering the first inspection stand, the rolled piece enters either the first or second inspection stand. Defective products among the rolled piece are rejected and collected by the defective product rejection and collection stand, while qualified products enter the stacking stand. The steel profile defective product classification and rejection collection production line includes a first transport roller and a second transport roller arranged in parallel. The front end of the first transport roller is connected to the output roller of the length-cutting machine, and the second transport roller is connected to the input roller of the palletizing frame. The first inspection frame and the second inspection frame are located between the first transport roller and the second transport roller. The defective product rejection collection frame is connected to the end of the first inspection frame near the second transport roller. The short-length product rejection collection frame is connected to the end of the second inspection frame near the second transport roller. The steel profile non-conforming product classification and rejection collection production line also includes a first preparatory position frame located between the first inspection frame and the second inspection frame; The number of preparation stations is multiple, arranged in sequence.

2. The steel profile non-conforming product classification, rejection, and collection production line according to claim 1, characterized in that, The palletizing table is located on the side of the second transport roller conveyor closest to the first inspection table.

3. The steel profile non-conforming product classification, rejection, and collection production line according to claim 1, characterized in that, The palletizing frame includes a first palletizing frame and a second palletizing frame located at both ends of the second transport roller conveyor, and the first inspection frame and the second inspection frame are located between the first palletizing frame and the second palletizing frame.

4. The steel profile non-conforming product classification, rejection, and collection production line according to claim 1, characterized in that, The defective product rejection and collection platform is equipped with grinding devices on both sides for grinding the defective products with end defects.

5. The steel profile non-conforming product classification, rejection, and collection production line according to claim 1, characterized in that, The first inspection stand is provided with a first steel separating device and an automatic identification device or manual inspection process for defective products on the side near the defective product rejection and collection stand, for identifying defective products in the rolled product and separating the defective products from qualified products.

6. The steel profile non-conforming product classification, rejection, and collection production line according to claim 1, characterized in that, The second inspection stand is equipped with a second steel separating device, an automatic short-length identification device, and an automatic quality defect product identification device or manual inspection process on the side near the short-length product rejection and collection stand, for identifying the short-length products in the rolled product and separating the short-length products from other rolled products.

7. The steel profile non-conforming product classification, rejection, and collection production line according to claim 1, characterized in that, Both the defective products in the defective product rejection collection rack and the short-length products in the short-length product rejection collection rack are transported to the palletizing rack via roller conveyors.

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