Cutting device capable of being used for small-angle cutting of cold-rolled steel strip

Abstract

The utility model discloses a cutting device capable of being used for small-angle cutting of a cold-rolled steel strip, relates to the field of cold-rolled steel, and aims to solve the problems that the cutting efficiency is not high, a subsequent polishing procedure is needed and the cutting efficiency needs to be further improved due to the fact that a single group of cutting knives are adopted for rotary cutting. According to the technical scheme, a cutting device comprises a cutting sliding groove for fixing dark yellow and the interior of a machining groove, laser cutting machine heads arranged in pairs are slidably installed in the cutting sliding groove, a laser cutting workbench located on the lower side of a strip steel body is fixedly installed in the machining groove, and the laser cutting machine heads are externally connected with a power source and provided with a driving device in a matched mode; compared with a traditional single-head cutter for cutting, the cutting quality and the cutting speed are obviously improved.

Description

Technical Field

[0001] This utility model relates to the technical field of cold-rolled steel, specifically to a cutting device that can be used for cold-rolled steel strip. Background Technology

[0002] Cold-rolled steel strip is produced by rolling hot-rolled coils at room temperature below the recrystallization temperature. It includes both plates and coils, and many domestic steel mills, such as Baosteel, Wuhan Iron and Steel, and Ansteel, can produce it. Steel strips delivered in sheets are called steel plates, also known as box plates or flat plates; those delivered in long coils are called steel strips, also known as coils. Cold-rolled steel strip production is the finishing process of steel strip rolling. The raw material for cold-rolled steel strip is hot-rolled steel strip. To obtain high-quality cold-rolled steel strip, good hot-rolled steel strip raw materials are essential. The chemical composition and purity of the steel, as well as the control of the hot-rolling process, have a significant impact on the microstructure and properties of the final cold-rolled steel strip product. The dimensions, shape, and surface condition of the hot-rolled steel strip directly affect the dimensional accuracy, shape, and surface quality of the cold-rolled steel strip.

[0003] An existing patent, CN 219665697 U, describes a cutting device for cold-rolled steel strip production, comprising a base and a protective shell disposed on the upper end of the base. The protective shell contains a transmission device, which is fixedly installed on the upper end of the base. Two first lead screws are symmetrically arranged on both sides of the upper end of the protective shell. By using the first and second lead screws inside the upper end of the protective shell as a moving structure for the cutting device, and by providing a rotating device to allow the cutting device to rotate, multi-directional cutting of the cold-rolled steel strip is facilitated, rather than being limited to transverse cutting. This reduces the problems caused by limited cutting angles and increases the angle and range at which the cold-rolled steel strip can be cut.

[0004] The existing technical solutions mentioned above have the following drawbacks: In actual production, steel strips are generally packaged into steel coils for transportation, and the requirements for the cutting angle are not high. Cutting devices with small angles can meet most cutting needs. In addition, the cutting device uses a single set of rotating cutting blades, which results in low cutting efficiency and requires subsequent grinding processes. The cutting efficiency needs to be further improved. Utility Model Content

[0005] The purpose of this invention is to provide a cutting device that can be used for small-angle cutting of cold-rolled steel strip.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] The device includes a protective shell with a through-hole processing groove. Transport rollers are installed at both ends of the processing groove, and the transport rollers are arranged in pairs, with a strip steel body sandwiched between them. A fixing fixture and a cutting device are fixedly installed against the groove wall of the processing groove. The cutting device includes a cutting slide that is fixed to the inside of the processing groove. A pair of laser cutting heads are slidably installed on the cutting slide. A laser cutting worktable located below the strip steel body is fixedly installed in the processing groove. The laser cutting heads are connected to an external power supply and are equipped with a drive device.

[0008] By adopting the above technical solution, during use, two laser cutting heads can be respectively positioned at the middle and side of the strip body in the width direction. After the fixed fixture holds the strip body, the PLC control system controls the drive device to drive the laser cutting head to move along the cutting groove for laser cutting. The strip body is relatively thin. The dual-head laser cutting method uses laser cutting instead of cutting tools, which has higher cutting precision and accuracy. At the same time, the cutting edge quality is high and the kerf width is narrow, eliminating the need for additional grinding. On the other hand, dual-head cutting further improves the cutting speed. Therefore, compared with traditional single-head tool cutting, the cutting quality and speed are significantly improved.

[0009] Furthermore, the driving device includes a lead screw arranged along the length of the cutting chute, with both ends of the lead screw rotatably connected to the cutting chute. A drive motor connected to the lead screw is fixedly installed on the outer wall of the cutting chute. A sliding seat with a threaded engagement with the lead screw is fixedly installed at the top of the laser cutting head. The sliding seat is fitted into the cutting chute and slidably disposed. A first locking block and a second locking block are fixedly installed on the outer walls of both sides of the sliding seat. A first locking groove that engages with the first locking block is opened through the cutting chute. A second locking groove that engages with the second locking block is opened on the chute wall. A power connector that passes through the first locking groove is fixedly installed on the outer wall of the first locking block.

[0010] By adopting the above technical solution, the PLC controls the drive motor to rotate, which in turn drives the lead screw to rotate. When the lead screw rotates, the sliding seat slides along the cutting groove under the action of the threaded engagement, thereby driving the laser cutting head to move and cut in the width direction of the strip body. The first locking block and the second locking block, together with the first slot and the second groove, can not only play a good limiting and guiding role, but the through-hole setting of the first slot and the power connector also facilitates the maintenance of a good power connection during the movement.

[0011] Furthermore, a pair of first hydraulic telescopic rods are fixedly installed on the inner wall of the processing groove, and the telescopic ends of the first hydraulic telescopic rods are fixedly connected to both ends of the cutting groove.

[0012] By adopting the above technical solution, the first hydraulic telescopic rod is connected to the PLC control system and an external hydraulic system, which can effectively control the distance between the cutting chute and the strip body, thereby accurately controlling the cutting distance of the laser cutting head.

[0013] Furthermore, the fixing clamp includes a second hydraulic telescopic rod fixedly disposed on both sides of the strip body. The end of the second hydraulic telescopic rod is fixedly disposed with a spherical connecting part. The spherical connecting part is movably engaged with a clamping plate. The clamping plate is disposed against the strip body. The number of the second hydraulic telescopic rods is two sets arranged on both sides of the cutting device. When in use, each set has 6 rods, with 3 rods arranged on each side of the strip body.

[0014] By adopting the above technical solution, since the spherical connecting part is engaged and movably connected with the clamping plate, the clamping plate is allowed to move freely up, down, left, and right within a certain range. When in use, the second hydraulic telescopic rod is connected to the PLC control system and an external hydraulic system. By controlling the extension and retraction length of different hydraulic telescopic rods, the horizontal angle of the clamping plate on one side of the cutting device can be effectively controlled, and the height of the clamping plates on both sides of the cutting device can be effectively controlled. While clamping the strip steel body well, the tilt angle and torsion angle of the strip steel body can be adjusted autonomously within a certain angle range according to actual needs, further improving the cutting effect.

[0015] In summary, the beneficial technical effects of this utility model are as follows:

[0016] 1. It adopts dual-head laser cutting, which produces high-quality cutting edges and narrow kerf widths, eliminating the need for additional grinding and further improving the cutting speed;

[0017] 2. The system employs a second hydraulic telescopic rod, a spherical connector, and a clamping plate, thereby enabling the strip body to autonomously adjust its tilt and torsion angles within a certain range according to actual needs, further improving the cutting quality. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0021] Figure 3 This is a cross-sectional schematic diagram of the cutting device in this utility model.

[0022] In the diagram, 1. Protective shell; 11. Processing groove; 2. Transport roller; 3. Strip steel body; 4. Fixing fixture; 5. Cutting device; 51. Cutting chute; 52. Laser cutting head; 53. Laser cutting worktable; 6. Drive device; 61. Lead screw; 62. Drive motor; 63. Sliding seat; 64. First locking block; 65. Second locking block; 641. First slot; 651. Second slot; 642. Power connector; 7. First hydraulic telescopic rod; 8. Second hydraulic telescopic rod; 81. Spherical connector; 82. Clamping plate. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings.

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-3 The present invention provides the following technical solution:

[0026] The system includes a protective shell 1, through which a processing groove 11 is formed. Transport rollers 2 are installed at both ends of the processing groove 11, with a pair of transport rollers 2 sandwiching a strip steel body 3 between them. A fixing clamp 4 and a cutting device 5 are fixedly installed against the groove wall of the processing groove 11. The cutting device 5 includes a cutting slide 51 fixed to the inside of the processing groove 11, with a pair of laser cutting heads 52 slidably mounted on the cutting slide 51. A laser cutting worktable 53 is fixedly installed on the processing groove 11, located below the strip steel body 3. The laser cutting heads 52 are externally powered and equipped with a drive device 6. During use, the two laser cutting heads... The laser cutting head 52 can be positioned at the middle and side of the strip body 3 in the width direction. After the fixing clamp 4 holds the strip body 3, the PLC control system controls the drive device 6 to drive the laser cutting head 52 to move along the cutting groove 51 for laser cutting. The strip body 3 is relatively thin. The dual-head laser cutting method uses laser cutting instead of cutting tools, which has higher cutting precision and accuracy. At the same time, the cutting edge quality is high and the kerf width is narrow, so no additional grinding is required. On the other hand, dual-head cutting further improves the cutting speed. Therefore, compared with traditional single-head cutting, the cutting quality and speed are significantly improved.

[0027] The driving device 6 includes a lead screw 61 arranged along the length of the cutting groove 51. The two ends of the lead screw 61 are rotatably connected to the cutting groove 51. A drive motor 62 connected to the lead screw 61 is fixedly installed on the outer wall of the cutting groove 51. A sliding seat 63 threaded to the lead screw 61 is fixedly installed at the top of the laser cutting head 52. The sliding seat 63 is fitted into the cutting groove 51 and slidably disposed. A first locking block 64 and a second locking block 65 are fixedly installed on the outer walls of both sides of the sliding seat 63. A first locking groove 641 that engages with the first locking block 64 is opened through the cutting groove 51. A second locking block 65 that engages with the second locking block 65 is opened on the groove wall of the cutting groove 51. The first locking block 64 has a power connector 642 fixedly installed on its outer wall, passing through the first locking slot 641. The PLC controls the drive motor 62 to rotate, which in turn drives the lead screw to rotate. When the lead screw rotates, the sliding seat 63 slides along the cutting groove 51 under the action of the threaded engagement, thereby driving the laser cutting head 52 to move and cut in the width direction of the strip body 3. The first locking block 64 and the second locking block 65, together with the first locking slot 641 and the second groove, not only play a good limiting and guiding role, but the through-hole first locking slot 641 and the power connector 642 also facilitate the maintenance of a good power connection during the movement.

[0028] A pair of first hydraulic telescopic rods 7 are fixedly installed on the inner wall of the processing groove 11. The telescopic ends of the first hydraulic telescopic rods 7 are fixedly connected to both ends of the cutting chute 51. The first hydraulic telescopic rods 7 are connected to the PLC control system and the external hydraulic system, which can effectively control the distance between the cutting chute 51 and the strip body 3, thereby accurately controlling the cutting distance of the laser cutting head 52.

[0029] The fixing clamp 4 includes second hydraulic telescopic rods 8 fixedly installed on both sides of the strip body 3. A spherical connecting part 81 is fixedly installed at the end of each second hydraulic telescopic rod 8. A clamping plate 82 is movably engaged with the spherical connecting part 81 and is positioned to abut against the strip body 3. Two sets of second hydraulic telescopic rods 8 are arranged on both sides of the cutting device 5, with six rods in each set, three on each side of the strip body 3. Because the spherical connecting part 81 is movably engaged with the clamping plate 82, the clamping plate 82 is allowed to move freely up, down, left, and right within a certain range. During use, the second hydraulic telescopic rods 8 are connected to a PLC control system and an external hydraulic system. By controlling the extension and retraction lengths of different hydraulic telescopic rods, the horizontal angle of the clamping plate 82 on one side of the cutting device 5 can be effectively controlled, as well as the height of the clamping plates 82 on both sides of the cutting device 5. While effectively clamping the strip body 3, the tilt and torsion angles of the strip body 3 can be autonomously adjusted within a certain angle range according to actual needs, further improving the cutting effect.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A cutting device for small-angle cutting of cold-rolled steel strip, comprising a protective shell (1), characterized in that: The protective shell (1) has a through-hole processing groove (11). The processing groove (11) has two end slots with transport rollers (2). The transport rollers (2) are arranged in pairs and sandwiched between them a strip steel body (3). The processing groove (11) is fitted with a fixing clamp (4) and a cutting device (5) fixedly installed against the groove wall. The cutting device (5) includes a cutting slide (51) fixed to the inside of the processing groove (11). The cutting slide (51) is slidably fitted with a pair of laser cutting heads (52). The processing groove (11) is fixedly fitted with a laser cutting worktable (53) located on the lower side of the strip steel body (3). The laser cutting head (52) is connected to an external power supply and is equipped with a drive device (6).

2. The cutting device for small-angle cutting of cold-rolled steel strip according to claim 1, characterized in that: The driving device (6) includes a lead screw (61) arranged along the length of the cutting groove (51). The two ends of the lead screw (61) are rotatably connected to the cutting groove (51). A drive motor (62) connected to the lead screw (61) is fixedly installed on the outer wall of the cutting groove (51). A sliding seat (63) threaded to the lead screw (61) is fixedly installed at the top of the laser cutting head (52). The sliding seat (63) is slidably fitted into the cutting groove (51). A first locking block (64) and a second locking block (65) are fixedly installed on the outer walls of both sides of the sliding seat (63). A first slot (641) that engages with the first locking block (64) is opened through the cutting groove (51). A second slot (651) that engages with the second locking block (65) is opened on the groove wall of the cutting groove (51). A power connector (642) that passes through the first slot (641) is fixedly installed on the outer wall of the first locking block (64).

3. A cutting device for small-angle cutting of cold-rolled steel strip according to claim 2, characterized in that: The inner wall of the processing groove (11) is fixedly provided with a pair of first hydraulic telescopic rods (7), and the telescopic ends of the first hydraulic telescopic rods (7) are fixedly connected to both ends of the cutting slide (51).

4. A cutting device for small-angle cutting of cold-rolled steel strip according to claim 3, characterized in that: The fixing clamp (4) includes a second hydraulic telescopic rod (8) fixedly disposed on both sides of the strip body (3). The end of the second hydraulic telescopic rod (8) is fixedly provided with a spherical connecting part (81). The spherical connecting part (81) is movably engaged with a clamping plate (82). The clamping plate (82) is disposed in contact with the strip body (3).

5. A cutting device for small-angle cutting of cold-rolled steel strip according to claim 4, characterized in that: The second hydraulic telescopic rod (8) consists of two sets arranged on both sides of the cutting device (5). Each set of the second hydraulic telescopic rod (8) consists of 6 rods, with 3 rods arranged on each side of the strip body (3).

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