A four-roll cold rolling mill and its operating method

Abstract

This invention discloses a four-roll cold rolling mill and its operating method, including a base with a body fixedly connected to its top. A guide box is fixedly connected to the inner wall of the mill body, and a guide cleaning device is installed inside the guide box. The guide cleaning device includes a bottom cleaning mechanism, a guiding mechanism, and a top cleaning mechanism. The bottom cleaning mechanism is located inside the guide box, and the guiding mechanism is located inside the guide box. The guiding mechanism and the bottom cleaning mechanism cooperate with each other. The top cleaning mechanism is located inside the guide box. This invention utilizes the coordinated arrangement of the bottom cleaning mechanism, the guiding mechanism, and the top cleaning mechanism. The bottom cleaning mechanism and the top cleaning mechanism can clean the rolling oil and impurities on both sides of the rolled workpiece from the cold rolling mill, and the guiding mechanism can guide the rolled workpiece, thereby ensuring the quality of the workpiece and preventing it from shifting, which would affect subsequent coiling and facilitate use.

Description

Technical Field

[0001] This invention relates to the technical field of cold rolling mills, and in particular to a four-roll cold rolling mill and its operating method. Background Technology

[0002] A cold rolling mill consists of a frame, rolls, roll bearings, roll adjustment mechanism, guide device, and rolling stand. The cold rolling mill uses its rolls to roll steel bars and metal sheets. During production, a feeding platform and a discharging platform are typically arranged at both ends of the cold rolling mill.

[0003] During the rolling process of metal materials in a cold rolling mill, appropriate rolling oil must be used between the rolls and the workpiece to avoid damage to the workpiece surface, ensure the roll life, and achieve the purpose of lubrication and cooling. However, the workpiece after passing through the rolls will carry a certain amount of rolling oil and may contain impurities. This rolling oil and impurities will have an adverse effect on subsequent processes. In addition, a coiling mechanism is set at the outlet of the cold rolling mill. When the workpiece enters the cold rolling mill for cold rolling, it is easy for the workpiece to deviate, affecting the subsequent coiling. Summary of the Invention

[0004] The purpose of this invention is to provide a four-roll cold rolling mill and its operating method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a four-roll cold rolling mill and its operating method, comprising a base, an organic body fixedly connected to its top end, and a filter screen fixedly installed at the top end of the base; A guide box is fixedly connected to the inner wall of the machine body, and a guide cleaning device is installed inside the guide box; The guiding and cleaning device includes a bottom cleaning mechanism, a guiding mechanism, and a top cleaning mechanism. The bottom cleaning mechanism is located inside the guide box, the guiding mechanism is located inside the guide box, the guiding mechanism and the bottom cleaning mechanism cooperate with each other, and the top cleaning mechanism is located inside the guide box.

[0006] Preferably, the bottom cleaning mechanism includes a squeezing plate, a sponge plate, a fixing plate, and an elastic component. The squeezing plate is fixedly connected to the inside of the guide box, the sponge plate is fixedly connected to one side of the squeezing plate, the squeezing plate has an elastic groove inside, the elastic component is located inside the elastic groove, the elastic component cooperates with the squeezing plate, and the guide mechanism cooperates with the squeezing plate.

[0007] Preferably, the elastic component includes a connecting rod, a movable plate, and a first compression spring. The movable plate is slidably inserted into the inner cavity of the elastic groove. One end of the connecting rod is fixedly connected to the movable plate, and the other end of the connecting rod is fixedly connected to the compression plate. The first compression spring is located inside the elastic groove.

[0008] Preferably, one end of the first compression spring is fixedly connected to the movable plate, and the other end of the first compression spring is fixedly connected to the inner wall of the elastic groove.

[0009] Preferably, the guiding mechanism includes an adjusting component, a rotating rod, a guide wheel, and an extrusion wheel. The adjusting component is located inside the guide box. Both rotating rods are connected to the adjusting component. The guide wheel is rotatably connected to the rotating rod via a bearing. The extrusion wheel is rotatably connected to the rotating rod via a bearing. The extrusion wheel cooperates with the extrusion plate.

[0010] Preferably, the adjustment assembly includes a connecting plate, a bidirectional screw, and a slider. The connecting plate is fixedly connected to the inside of the guide box. An adjustment groove is provided at the top of the connecting plate. The bidirectional screw is rotatably inserted into the inner wall of the adjustment groove. Both sliders are threadedly inserted into the bidirectional screw. The rotating rod is fixedly connected to the top of the slider.

[0011] Preferably, the top cleaning mechanism includes a top plate, a scraper, limiting blocks, and a second compression spring. The top plate is fixedly connected to the inside of the guide box. A telescopic groove is provided at the bottom end of the top plate. The scraper is slidably inserted into the inner cavity of the telescopic groove. Two limiting blocks are fixedly connected to both sides of the scraper. Limiting grooves are provided on both sides of the inner wall of the telescopic groove. The limiting blocks are slidably inserted into the inner cavity of the limiting grooves. A plurality of second compression springs are located inside the telescopic groove.

[0012] Preferably, one end of each of the plurality of second compression springs is fixedly connected to the scraper, and the other end of each of the plurality of second compression springs is fixedly connected to the top end of the inner wall of the telescopic groove, and the cross-sections of the top plate and the scraper are both V-shaped.

[0013] Preferably, a connecting cylinder is fixedly connected to the bottom of the guide box, and the connecting cylinder is fixedly inserted and connected to the filter screen. A collection groove is provided on one side of the base, and a collection box is slidably inserted and connected to the inner cavity of the collection groove.

[0014] The present invention also provides an operating method for a four-roll cold rolling mill, including the following specific steps: Step 1: After the machine body rolls out the workpiece, the pull rod can be pulled to make the scraper rise under force. After the workpiece is transported into the guide box, the pull rod is released. Under the elastic force of the second compression spring, the scraper will clamp the workpiece between the scraper and the sponge plate. The scraper is close to the top of the workpiece and can scrape off the rolling oil and impurities at the top of the workpiece. The scraped rolling oil and impurities will gradually slide along the inclined surface of the scraper until they flow into the collection box through the filter of the connecting cylinder and the filter screen. Step 2: At the same time, rotate the bidirectional screw, so that the slider drives the two guide wheels to limit the two sides of the rolled piece; Step 3: During the conveying of the rolled piece, the friction force can drive the guide wheel to rotate, which in turn causes the extrusion wheel to rotate as well. The extrusion wheel can intermittently extrude the extrusion plate. Under the elastic force of the first compression spring, the extrusion plate can be reset in time when the extrusion wheel stops extruding, thus forming a reciprocating extrusion action. This allows the sponge plate to squeeze out the absorbed rolling oil in time, and then flow into the inside of the collection box through the connecting cylinder, thereby guiding the rolled piece while cleaning both sides of the rolled piece.

[0015] The technical effects and advantages of this invention are as follows: (1) The present invention utilizes a combination of bottom cleaning mechanism, guide mechanism and top cleaning mechanism. The bottom cleaning mechanism and top cleaning mechanism can clean the rolling oil and impurities on both sides of the rolled piece produced by the cold rolling mill, and the guide mechanism can guide the rolled piece produced by the cold rolling mill. This ensures the quality of the rolled piece and prevents the rolled piece from deviating, which would affect the subsequent coiling and make it easy to use. (2) The present invention utilizes the combination of extrusion plate, sponge plate, fixing plate and elastic component. The sponge plate contacts the bottom end of the rolled workpiece, thereby cleaning the rolling oil and impurities at the bottom end of the rolled workpiece. The elastic component facilitates the intermittent extrusion plate to squeeze the sponge plate while the guiding mechanism is guiding, thereby squeezing out the rolling oil absorbed by the sponge plate and flowing into the collection box through the connecting cylinder, thus ensuring the cleaning ability of the sponge plate. (3) The present invention utilizes the combination of adjustment components, rotating rods, guide wheels and extrusion wheels. The adjustment components can drive the two guide wheels to move synchronously, so that the guide wheels can limit and guide the rolled pieces of different widths. As the rolled pieces are continuously conveyed, the guide wheels will rotate, thereby driving the extrusion wheels to rotate and intermittently extruding the extrusion plate, so that the cleaning ability of the sponge board can be guaranteed while guiding. (4) The present invention utilizes the combination of a top plate, a scraper, a limiting block, and a second compression spring. The elastic force of the second compression spring allows the scraper to always be in close contact with the top of the workpiece and scrape off the rolling oil and impurities at the top of the workpiece. Since the scraper is V-shaped, the scraped rolling oil and impurities will gradually slide along the inclined surface of the scraper until they flow into the collection box through the filter of the connecting cylinder and the filter screen. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 This is a top view of the internal structure of the guide box of the present invention.

[0018] Figure 3 This is a bottom view of the internal structure of the guide box of the present invention.

[0019] Figure 4 This is a schematic diagram of the side structure of the sponge board in this invention.

[0020] Figure 5 This is one of the schematic diagrams of the internal structure of the guide box of the present invention.

[0021] Figure 6 This is the second schematic diagram of the internal structure of the guide box of the present invention.

[0022] Figure 7 For the present invention Figure 5 Enlarged structural diagram at point A in the middle.

[0023] Figure 8 For the present invention Figure 6 Enlarged structural diagram at point B.

[0024] In the diagram: 1. Base; 2. Body; 3. Filter screen; 4. Guide box; 5. Bottom cleaning mechanism; 51. Extrusion plate; 52. Sponge board; 53. Fixing plate; 54. Elastic component; 541. Connecting rod; 542. Moving plate; 543. First compression spring; 6. Guide mechanism; 61. Adjustment component; 611. Connecting plate; 612. Bidirectional screw; 613. Slider; 62. Rotating rod; 63. Guide wheel; 64. Extrusion wheel; 7. Top cleaning mechanism; 71. Top plate; 72. Scraper; 73. Limiting block; 74. Second compression spring; 8. Connecting cylinder; 9. Collection box. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] This invention provides, for example Figure 1-8 The four-roll cold rolling mill and its operation method are shown, including a base 1, with an organism 2 fixedly connected to its top. A filter screen 3 is fixedly installed on the top of the base 1. The filter screen 3 is mainly used to filter the rolling oil and the impurities carried by the rolling oil. A guide box 4 is fixedly connected to the inner wall of the machine body 2, and a guide cleaning device is installed inside the guide box 4; The guide cleaning device includes a bottom cleaning mechanism 5, a guide mechanism 6, and a top cleaning mechanism 7. The bottom cleaning mechanism 5 is located inside the guide box 4, and the guide mechanism 6 is located inside the guide box 4. The guide mechanism 6 and the bottom cleaning mechanism 5 cooperate with each other. The top cleaning mechanism 7 is located inside the guide box 4. The bottom cleaning mechanism 5 and the top cleaning mechanism 7 can clean the rolling oil and impurities on both sides of the rolled piece produced by the cold rolling mill. The guide mechanism 6 can guide the rolled piece produced by the cold rolling mill, thereby ensuring the quality of the rolled piece and preventing the rolled piece from deviating, which would affect the subsequent coiling and facilitate use.

[0027] The bottom cleaning mechanism 5 includes an extrusion plate 51, a sponge plate 52, a fixing plate 53, and an elastic component 54. The extrusion plate 51 is fixedly connected to the inside of the guide box 4, and the sponge plate 52 is fixedly connected to one side of the extrusion plate 51. An elastic groove is provided inside the extrusion plate 51, and the elastic component 54 is located inside the elastic groove. The elastic component 54 cooperates with the extrusion plate 51. The guide mechanism 6 cooperates with the extrusion plate 51. An inclined surface is provided at the top of the extrusion plate 51, so that after the sponge plate 52 absorbs the rolling oil, impurities will fall into the inside of the connecting cylinder 8 through the extrusion plate 51 with the inclined surface.

[0028] The elastic component 54 includes a connecting rod 541, a movable plate 542, and a first compression spring 543. The movable plate 542 is slidably inserted into the inner cavity of the elastic groove. One end of the connecting rod 541 is fixedly connected to the movable plate 542, and the other end of the connecting rod 541 is fixedly connected to the extrusion plate 51. The first compression spring 543 is located inside the elastic groove and is always in a compressed state, so that the movable plate 542 always exerts an elastic force on the connecting rod 541, so that the extrusion plate 51 will not squeeze the sponge plate 52 when there is no external force, but will stick tightly to the sponge plate 52.

[0029] One end of the first compression spring 543 is fixedly connected to the movable plate 542, and the other end of the first compression spring 543 is fixedly connected to the inner wall of the elastic groove.

[0030] The guiding mechanism 6 includes an adjusting component 61, a rotating rod 62, a guide wheel 63, and a pressing wheel 64. The adjusting component 61 is located inside the guide box 4. Both rotating rods 62 are connected to the adjusting component 61. The guide wheel 63 is rotatably connected to the rotating rod 62 via bearings. The pressing wheel 64 is rotatably connected to the rotating rod 62 via bearings. The pressing wheel 64 cooperates with the pressing plate 51 and is fixedly connected to the guide wheel 63. The outer wall of the guide wheel 63 is made of rubber, so that when the rolled workpiece is conveyed, the friction force can drive the guide wheel 63 to rotate, thereby causing the pressing wheel 64 to rotate as well. The pressing wheel 64 is elliptical, so that it can intermittently press the pressing plate 51, thereby squeezing out the rolling oil absorbed by the sponge board 52 and flowing into the collection box 9 through the connecting cylinder 8, thus ensuring the cleaning ability of the sponge board 52.

[0031] The adjusting assembly 61 includes a connecting plate 611, a bidirectional screw 612, and a slider 613. The connecting plate 611 is fixedly connected to the inside of the guide box 4. An adjusting groove is provided at the top of the connecting plate 611. The bidirectional screw 612 is rotatably inserted into the inner wall of the adjusting groove. Both sliders 613 are threadedly inserted into the bidirectional screw 612. The rotating rod 62 is fixedly connected to the top of the slider 613. By rotating the bidirectional screw 612, the two sliders 613 can move relative to each other. Depending on the rotation direction of the bidirectional screw 612, the two sliders 613 move closer to each other or further away from each other.

[0032] The top cleaning mechanism 7 includes a top plate 71, a scraper 72, limiting blocks 73, and second compression springs 74. The top plate 71 is fixedly connected to the inside of the guide box 4. A telescopic groove is provided at the bottom end of the top plate 71. The scraper 72 is slidably inserted into the inner cavity of the telescopic groove. Two limiting blocks 73 are fixedly connected to both sides of the scraper 72. Limiting grooves are provided on both sides of the inner wall of the telescopic groove. The limiting blocks 73 are slidably inserted into the inner cavity of the limiting grooves. Multiple second compression springs 74 are located inside the telescopic groove. One end of each of the multiple second compression springs 74 is fixedly connected to the scraper 72, and the other end of each of the multiple second compression springs 74 is fixedly connected to the scraper 72. The top of the inner wall of the shrinkage groove is fixedly connected. The cross-sections of the top plate 71 and the scraper 72 are both V-shaped. Utilizing the elastic force of the second compression spring 74, the scraper 72 can always be in close contact with the top of the workpiece and scrape off the rolling oil and impurities on the top of the workpiece. Since the scraper 72 is V-shaped, the scraped rolling oil and impurities will gradually slide along the inclined surface of the scraper 72 until they flow into the interior of the collection box 9 through the filter of the connecting cylinder 8 and the filter screen 3. The top of the scraper 72 is fixedly connected with a pull rod. The pull rod is not only slidably connected to the top plate 71, but also slidably connected to the top of the guide box 4.

[0033] The bottom of the guide box 4 is fixedly connected to the connecting cylinder 8. The bottom opening of the connecting cylinder 8 is located directly above the filter screen 3. A collection groove is provided on one side of the base 1. A collection box 9 is slidably connected to the inner cavity of the collection groove. This allows the rolling oil and impurities cleaned by the bottom cleaning mechanism 5 and the top cleaning mechanism 7 to be filtered and collected in a centralized manner for centralized processing and reuse.

[0034] Operating method of this invention: After the workpiece is rolled out by the machine body 2, the scraper 72 can be raised by pulling the lever. After the workpiece is conveyed into the guide box 4, the lever is released, and the scraper 72 will clamp the workpiece between the scraper 72 and the sponge plate 52 under the elastic force of the second compression spring 74. The scraper 72 is close to the top of the workpiece, and can scrape off the rolling oil and impurities at the top of the workpiece. The scraped rolling oil and impurities will gradually slide along the inclined surface of the scraper 72 until they flow into the collection box 9 through the filter of the connecting cylinder 8 and the filter screen 3. At the same time, the bidirectional screw 612 is rotated, so that the slider 613 drives two guide wheels 63 to limit the two sides of the rolled piece. When the rolled piece is being transported, the friction force can drive the guide wheels 63 to rotate, thereby causing the extrusion wheel 64 to rotate as well. The extrusion wheel 64 can intermittently extrude the extrusion plate 51. Under the elastic force of the first compression spring 543, the extrusion plate 51 can be reset in time when the extrusion wheel 64 stops extruding, thus forming a reciprocating extrusion action. This allows the sponge plate 52 to squeeze out the absorbed rolling oil in time, and then flow into the collection box 9 through the connecting cylinder 8, thereby guiding the rolled piece while cleaning both sides of the rolled piece.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A four-roll cold rolling mill, comprising: A base (1) with an organic body (2) fixedly connected to its top, and a filter screen (3) fixedly installed on the top of the base (1). The feature is that: a guide box (4) is fixedly connected to the inner wall of the body (2), and a guide cleaning device is provided inside the guide box (4); The guide cleaning device includes a bottom cleaning mechanism (5), a guide mechanism (6) and a top cleaning mechanism (7). The bottom cleaning mechanism (5) is located inside the guide box (4). The guide mechanism (6) is located inside the guide box (4). The guide mechanism (6) cooperates with the bottom cleaning mechanism (5). The top cleaning mechanism (7) is located inside the guide box (4). The bottom cleaning mechanism (5) includes a squeezing plate (51), a sponge plate (52), a fixing plate (53), and an elastic component (54). The squeezing plate (51) is fixedly connected to the inside of the guide box (4). The sponge plate (52) is fixedly connected to one side of the squeezing plate (51) and the sponge plate (52) is located between the squeezing plate (51) and the fixing plate (53). An elastic groove is provided inside the fixing plate (53). The elastic component (54) includes a connecting rod (541), a movable plate (542), and a first compression spring (543). The movable plate (542) is slidably connected to the inner cavity of the elastic groove. One end of the connecting rod (541) is fixedly connected to the movable plate (542), and the other end of the connecting rod (541) is fixedly connected to the pressing plate (51). The first compression spring (543) is located inside the elastic groove. One end of the first compression spring (543) is fixedly connected to the movable plate (542), and the other end of the first compression spring (543) is fixedly connected to the inner wall of the elastic groove. The guiding mechanism (6) includes an adjusting component (61), a rotating rod (62), a guide wheel (63), and a pressing wheel (64). The adjusting component (61) is located inside the guide box (4). Both rotating rods (62) are connected to the adjusting component (61). The guide wheel (63) is rotatably connected to the rotating rod (62) through a bearing. The pressing wheel (64) is rotatably connected to the rotating rod (62) through a bearing. The pressing wheel (64) is fixedly connected to the guide wheel (63). The pressing wheel (64) is elliptical and cooperates with the pressing plate (51).

2. A four-roll cold rolling mill according to claim 1, characterized in that, The adjustment assembly (61) includes a connecting plate (611), a bidirectional screw (612), and a slider (613). The connecting plate (611) is fixedly connected to the inside of the guide box (4). An adjustment groove is provided at the top of the connecting plate (611). The bidirectional screw (612) is rotatably inserted into the inner wall of the adjustment groove. Both sliders (613) are threadedly inserted into the bidirectional screw (612). The rotating rod (62) is fixedly connected to the top of the slider (613).

3. A four-roll cold rolling mill according to claim 2, characterized in that, The top cleaning mechanism (7) includes a top plate (71), a scraper (72), a limiting block (73), and a second compression spring (74). The top plate (71) is fixedly connected to the inside of the guide box (4). A telescopic groove is provided at the bottom end of the top plate (71). The scraper (72) is slidably inserted into the inner cavity of the telescopic groove. The two limiting blocks (73) are fixedly connected to both sides of the scraper (72). Limiting grooves are provided on both sides of the inner wall of the telescopic groove. The limiting blocks (73) are slidably inserted into the inner cavity of the limiting groove. Multiple second compression springs (74) are located inside the telescopic groove.

4. A four-roll cold rolling mill according to claim 3, characterized in that, One end of each of the multiple second compression springs (74) is fixedly connected to the scraper (72), and the other end of each of the multiple second compression springs (74) is fixedly connected to the top of the inner wall of the telescopic groove. The cross-sections of the top plate (71) and the scraper (72) are both V-shaped, and a pull rod is fixedly connected to the top of the scraper (72).

5. A four-roll cold rolling mill according to claim 4, characterized in that, The bottom end of the guide box (4) is fixedly connected to a connecting cylinder (8), and the connecting cylinder (8) is fixedly inserted into the filter screen (3). A collection groove is provided on one side of the base (1), and a collection box (9) is slidably inserted into the inner cavity of the collection groove.

6. The operating method of a four-roll cold rolling mill according to claim 5, characterized in that, The specific usage steps are as follows: Step 1: After the workpiece is rolled out by the machine body (2), the scraper (72) is lifted by pulling the lever. After the workpiece is transported to the inside of the guide box (4), the lever is released. The scraper (72) will clamp the workpiece between the scraper (72) and the sponge plate (52) under the elastic force of the second compression spring (74). The scraper (72) is close to the top of the workpiece, which can scrape off the rolling oil and debris at the top of the workpiece. The scraped rolling oil and debris will gradually slide along the inclined surface of the scraper (72) until it flows into the inside of the collection box (9) through the filter of the connecting cylinder (8) and the filter screen (3). Step 2: At the same time, rotate the bidirectional screw (612), so that the slider (613) drives the two guide wheels (63) to limit the two sides of the rolled piece; Step 3: When the rolled piece is being conveyed, the friction force can be used to drive the guide wheel (63) to rotate, thereby causing the extrusion wheel (64) to rotate as well. The extrusion wheel (64) can intermittently extrude the extrusion plate (51). Under the elastic force of the first compression spring (543), the extrusion plate (51) can be reset in time when the extrusion wheel (64) is not extruding, thereby forming a reciprocating extrusion action, so that the sponge plate (52) can squeeze out the absorbed rolling oil in time, and then flow into the inside of the collection box (9) through the connecting cylinder (8), thereby guiding the rolled piece while cleaning both sides of the rolled piece.

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