Section steel hot sawing machine

Abstract

The utility model relates to a section steel hot sawing machine which comprises a cutting table, a circular saw blade, a motor for driving the circular saw blade to rotate, a rack, a dust cover and a cooling water device. The dustproof cover covers the outer side of the circular saw blade, and the bottom end of the dustproof cover is open; the cooling water device comprises a nozzle arranged in the dust cover and used for cooling the circular saw blade, a cooling water tank fixedly arranged on the lower portion of the rack and located below the open end of the dust cover, and a water conveying pipe set arranged between the nozzle and the cooling water tank in a communicating mode. The number of the nozzles is two, the two nozzles are the upper nozzle and the lower nozzle respectively, the two nozzles are located on the two sides of the circular saw blade in the axial direction respectively, the upper nozzle inclines inwards and upwards, and the lower nozzle inclines inwards and downwards. The upper nozzle and the lower nozzle are matched together, so that all-directional dead-corner-free scouring of sawteeth of the circular saw blade can be realized, a good cooling effect on the circular saw blade is achieved, residues of saw dust on the circular saw blade are avoided, and the subsequent use effect of the circular saw blade is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of hot sawing machines, in particular to a hot sawing machine for section steel. Background Art

[0002] Hot sawing machine is a kind of cutting equipment widely used in metallurgical plants for steel sections, especially in the rolling production line of special-section steel sections. Hot sawing machine uses a high-speed rotating circular saw blade to cut the high-temperature steel sections after rolling to cut out the steel sections of the required length. However, when the hot sawing machine cuts the high-temperature steel sections, the temperature of the steel billet is very high, which can easily cause the saw blade to be damaged due to excessive temperature. In order to increase the service life of the saw blade, some manufacturers also use cooling water to directly flush the saw blade through multiple nozzles or spray guns to cool it. However, although the existing cooling water can cool the saw blade, it is not effective in cleaning the sawdust remaining on the saw blade, which affects the cutting effect of the saw blade. In addition, the current saw blade cooling method of the hot sawing machine is to directly drain the water after cooling the saw blade through multiple nozzles or spray guns, which uses a large amount of cooling water and causes a waste of water resources. Utility Model Content

[0003] The main purpose of the utility model is to provide a steel section hot sawing machine to solve the problems of poor cleaning effect of sawdust remaining on the saw blade when the saw blade is cooled by cooling water and waste of water resources in the existing hot sawing machines.

[0004] To solve the above problems, the utility model is achieved as follows:

[0005] A steel hot sawing machine comprises a cutting table, a circular saw blade located above the cutting table, and a motor for driving the circular saw blade to rotate, and also comprises a frame, a dust cover, and a cooling water device; the dust cover is arranged outside the circular saw blade, and the bottom end of the dust cover is open;

[0006] The cooling water device comprises a nozzle disposed in the dust cover for cooling the circular saw blade, a cooling water tank fixedly disposed at the lower part of the frame and below the open end of the dust cover, and a water delivery pipe group connected between the nozzle and the cooling water tank;

[0007] There are two nozzles, which are an upper nozzle and a lower nozzle respectively. The upper nozzle and the lower nozzle are respectively located on both sides of the axial direction of the circular saw blade. The upper nozzle is inclined inwardly upward, and the lower nozzle is inclined inwardly downward.

[0008] Wherein, the water outlet end of the upper nozzle is located above the water outlet end of the lower nozzle.

[0009] Wherein, the water outlet end of the upper nozzle and the water outlet end of the lower nozzle are both directed toward the edge of the circular saw blade.

[0010] Wherein, the lower part of the dust cover gradually shrinks from top to bottom along the vertical direction.

[0011] Wherein, a liquid inlet is provided at the upper portion of the cooling water tank, and the liquid inlet is located directly below the open end of the dust cover.

[0012] Wherein, a filter plate is detachably mounted at the liquid inlet of the cooling water tank.

[0013] Wherein, the cooling water device also includes a water pump, and the water delivery pipe group includes a water inlet pipe and a water outlet pipe, the water inlet pipe is connected and arranged between the water inlet of the water pump and the cooling water tank, and the water outlet pipe is connected and arranged between the outlet of the water pump and the nozzle.

[0014] Wherein, the steel section hot saw machine also includes a lifting device fixedly arranged on the frame for adjusting the height position of the motor.

[0015] Among them, the lifting device includes a support frame vertically and fixedly arranged on the frame, a vertical lead screw rotatably connected to the support frame, a nut spirally matched with the lead screw, and a mounting plate fixedly connected to the nut, the motor is fixedly mounted on the mounting plate, a vertical slide rail is fixedly arranged on the support frame, and a slider slidably connected to the slide rail is arranged on the mounting plate.

[0016] Among them, the motor installation side of the dust cover is provided with a through hole for the motor shaft of the motor to pass through, and a sealing plate is arranged on the outer side of the through hole. The sealing plate is fixedly connected to the motor seat of the motor, and the outer edge size of the sealing plate is larger than the outer edge size of the through hole.

[0017] The beneficial effects of this application are:

[0018] The upper nozzle is mainly used to cool and flush the lower surface of the saw teeth of the circular saw blade and the dead angle between two adjacent saw teeth, and the lower nozzle is mainly used to cool and flush the upper surface of the saw teeth of the circular saw blade and the dead angle between two adjacent saw teeth. The cooperation of the upper nozzle and the lower nozzle can realize the all-round flushing of the saw teeth of the circular saw blade without dead angles, which not only has a good cooling effect on the circular saw blade, but also avoids the residue of sawdust on the circular saw blade, ensuring the subsequent use effect of the circular saw blade. The nozzle of the utility model cooperates with the cooling water device to recycle the cooling water in the cooling water tank, reduce the waste of water resources, and save water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the utility model without the upper part of the dust cover;

[0022] Figure 3 It is a schematic diagram of the structure of the nozzle;

[0023] Figure 4 yes Figure 3 Left view of;

[0024] Figure 5 yes Figure 3 A top view of

[0025] Figure 6 It is a schematic diagram of the structure of the cooling water tank;

[0026] Figure 7 yes Figure 1 Schematic diagram of the structure from another perspective.

[0027] Description of Reference Numerals

[0028] 1. Cutting table; 2. Circular saw blade; 3. Motor; 4. Frame; 5. Dust cover; 6. Cooling water device; 611. Upper nozzle; 612. Lower nozzle; 62. Cooling water tank; 621. Liquid inlet; 622. Filter plate; 63. Water pump; 641. Water outlet pipe; 642. Water inlet pipe; 65. Liquid level sensor; 71. Support frame; 72. Lead screw; 73. Mounting plate; 74. Slide rail; 75. Slider; 76. Through hole; 77. Sealing plate; 8. Steel section. DETAILED DESCRIPTION

[0029] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0030] like Figure 1-Figure 7As shown, a steel hot sawing machine of the utility model comprises a cutting table 1, a circular saw blade 2 located above the cutting table 1, and a motor 3 for driving the circular saw blade 2 to rotate, and also comprises a frame 4, a dust cover 5, and a cooling water device 6. The dust cover 5 is arranged on the outside of the circular saw blade 2, and the bottom end of the dust cover 5 is open. The cutting table 1 is fixedly arranged on the frame 4. The cooling water device 6 comprises a nozzle arranged in the dust cover 5 for cooling the circular saw blade 2, a cooling water tank 62 fixedly arranged at the bottom of the frame 4 and located below the open end of the dust cover 5, and a water pipe group connected between the nozzle and the cooling water tank 62. The upper part of the dust cover 5 is arranged on the outside of the circular saw blade 2, and the lower part of the dust cover 5 gradually shrinks from top to bottom in the vertical direction. The provision of the dust cover 5 can prevent sawdust generated by the circular saw blade 2 from splashing everywhere when sawing the steel. The lower part of the dust cover 5 is tapered, so that the cooling water used to cool the circular saw blade 2 can be smoothly introduced into the cooling water tank 62, and the sawdust can be discharged more concentratedly near the same position of the cooling water tank 62, which is convenient for cleaning the cooling water tank 62 later.

[0031] like Figure 3-Figure 5As shown, there are two nozzles, namely an upper nozzle 611 and a lower nozzle 612, which are respectively located on both sides of the axial direction of the circular saw blade 2. The upper nozzle 611 is inclined inwardly upward, and the lower nozzle 612 is inclined inwardly downward. The water outlet end of the upper nozzle 611 is located above the water outlet end of the lower nozzle 612. Among them, the water outlet end of the upper nozzle 611 and the water outlet end of the lower nozzle 612 are both facing the edge of the circular saw blade 2. In this embodiment, when the nozzle and the circular saw blade 2 are projected on a horizontal plane: the distance between the outlet end of the upper nozzle 611 and the vertical surface on the corresponding side of the circular saw blade 2 is greater than the distance between the outlet end of the lower nozzle 612 and the vertical surface on the corresponding side of the circular saw blade 2; the distance between the outlet end of the lower nozzle 612 and the vertical surface on the corresponding side of the circular saw blade 2 ranges from 0.2 to 3 mm; the distance between the outlet end of the upper nozzle 611 and the vertical surface on the corresponding side of the circular saw blade 2 is greater than 8 times the distance between the outlet end of the lower nozzle 612 and the vertical surface on the corresponding side of the circular saw blade 2; the angle between the central axis of the upper nozzle 611 and the vertical surface on the corresponding side of the circular saw blade 2 ranges from 20° to 35°, the angle between the central axis of the lower nozzle 612 and the vertical surface on the corresponding side of the circular saw blade 2 ranges from 30° to 50°, and the angle between the central axis of the upper nozzle 611 and the vertical surface on the corresponding side of the circular saw blade 2 is smaller than the angle between the central axis of the lower nozzle 612 and the vertical surface on the corresponding side of the circular saw blade 2. In this embodiment, the circular saw blade 2 includes a circular plate body and a plurality of saw teeth evenly arranged on the circular plate body, and the upper surface and the lower surface of each saw tooth form an angular structure. The upper nozzle 611 is mainly used to cool and flush the lower surface of the saw teeth, and the lower nozzle 612 is mainly used to cool and flush the upper surface of the saw teeth. In addition, the setting of the inclination, distance, and angle of the upper nozzle 611 ensures that the dead angle between two adjacent saw teeth can be flushed while flushing the lower surface of the saw teeth; the setting of the inclination, distance, and angle of the lower nozzle 612 ensures that the dead angle between two adjacent saw teeth can be flushed while flushing the upper surface of the saw teeth, so that the dead angle of the circular saw blade 2 can be fully flushed. In the present utility model, only through the cooperation of the upper nozzle 611 and the lower nozzle 612, the saw teeth of the circular saw blade 2 can be flushed in all directions without dead angles, avoiding the residue of sawdust on the circular saw blade 2, and ensuring the subsequent use effect of the circular saw blade 2. While achieving a better cooling and flushing effect, the number of nozzles is reduced and the amount of cooling water used is reduced.

[0032] like Figure 6-Figure 7As shown, a liquid inlet 621 is provided on the upper part of the cooling water tank 62, and the liquid inlet 621 is located directly below the open end of the dust cover 5. In this embodiment, one side of the upper part of the cooling water tank 62 is closed, and the liquid inlet 621 is provided on the other side. Among them, a filter plate 622 is detachably installed at the liquid inlet 621 on the cooling water tank 62. After the cooling water flushes the circular saw blade 2, it flows into the filter plate 622 through the open part at the bottom of the dust cover 5. The filter plate 622 can first intercept the sawdust, and then the clean cooling water after filtering enters the cooling water tank 62 and can be used again.

[0033] The cooling water device 6 also includes a water pump 63, and the water delivery pipe group includes a water inlet pipe 642 and a water outlet pipe 641. The water inlet pipe 642 is connected to the water inlet of the water pump 63 and the cooling water tank 62, and the water outlet pipe 641 is connected to the outlet of the water pump 63 and the nozzle. In this embodiment, the inlet end of the water inlet pipe 642 is located at the lower part of the cooling water tank 62, and a liquid level sensor 65 is fixedly arranged at the lower part of the cooling water tank 62. When the installation height of the liquid level sensor 65 is higher than the inlet end of the water inlet pipe 642, when the water level is lower than the liquid level sensor 65, the liquid level sensor 65 transmits a signal, and the staff can replenish water to the cooling water tank 62 in time, which can ensure that the cooling water can smoothly cool and flush the circular saw blade 2. The cooling water tank 62 is also provided with a water filling port and a drain port (not shown in the figure). When the cooling water temperature in the cooling water tank 62 is too high or the water volume does not meet the demand, cooling water can be added to the cooling water tank 62 at any time through the cooperation of the water filling port and the drain port to flexibly meet the cooling water demand.

[0034] The steel hot sawing machine also includes a lifting device fixedly arranged on the frame 4 for adjusting the height of the motor 3. The lifting device includes a support frame 71 vertically and fixedly arranged on the frame 4, a vertical lead screw 72 rotatably connected to the support frame 71, a nut screwed with the lead screw 72, and a mounting plate 73 fixedly connected to the nut. The motor 3 is fixedly installed on the mounting plate 73. A vertical slide rail 74 is fixedly arranged on the support frame 71. A slider 75 slidably connected to the slide rail 74 is arranged on the mounting plate 73. A through hole 76 for the motor 3 shaft of the motor 3 to pass through is provided on the motor 3 mounting side of the dust cover 5. A sealing plate 77 is fitted on the outer side of the through hole 76. The sealing plate 77 is fixedly connected to the motor seat of the motor 3. The outer edge size of the sealing plate 77 is larger than the outer edge size of the through hole 76. In this way, it can be ensured that when the circular saw blade 2 is moved up and down, the sealing plate 77 can always seal the dust cover 5 to prevent sawdust from entering the dust cover 5.

[0035] like Figure 1-Figure 7 As shown, the use process of the utility model is:

[0036] First, according to the size of the steel 8, the height of the circular saw blade 2 is adjusted by the motor 3 and the lifting device, and cooling water is pre-stored in the cooling water tank 62. When the steel 8 placed on the cutting table 1 is cut, the cooling water in the cooling water tank 62 is pumped into the upper nozzle 611 and the lower nozzle 612 through the water inlet pipe 642 and the water outlet pipe 641 by the water pump 63. The upper nozzle 611 and the lower nozzle 612 cool and flush the circular saw blade 2 at the same time, wherein the upper nozzle 611 is mainly used to cool and flush the lower surface of the saw teeth of the circular saw blade 2 and the dead angle between two adjacent saw teeth, and the lower nozzle 612 is mainly used to cool and flush the upper surface of the saw teeth of the circular saw blade 2 and the dead angle between two adjacent saw teeth. The cooperation of the upper nozzle 611 and the lower nozzle 612 can realize the all-round flushing of the saw teeth of the circular saw blade 2 without dead angles, which not only produces a good cooling effect on the circular saw blade 2, but also avoids the residue of sawdust on the circular saw blade 2, and ensures the subsequent use effect of the circular saw blade 2. The used cooling water mixed with sawdust flows through the opening at the bottom of the dust cover 5 and first passes through the filter plate 622, which can first intercept the sawdust, and then the filtered clean cooling water enters the cooling water tank 62, which can be used again to flush the circular saw blade 2. The sawdust on the filter plate 622 can be collected and processed centrally, which is convenient for cleaning and subsequent secondary utilization.

[0037] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A steel hot sawing machine, comprising a cutting table, a circular saw blade located above the cutting table, and a motor for driving the circular saw blade to rotate, characterized in that: It also includes a frame, a dust cover, and a cooling water device; the dust cover is arranged on the outside of the circular saw blade, and the bottom end of the dust cover is open; The cooling water device comprises a nozzle disposed in the dust cover for cooling the circular saw blade, a cooling water tank fixedly disposed at the lower part of the frame and below the open end of the dust cover, and a water delivery pipe group connected between the nozzle and the cooling water tank; There are two nozzles, which are an upper nozzle and a lower nozzle respectively. The upper nozzle and the lower nozzle are respectively located on both sides of the axial direction of the circular saw blade. The upper nozzle is inclined inwardly upward, and the lower nozzle is inclined inwardly downward.

2. A steel hot sawing machine according to claim 1, characterized in that: The water outlet end of the upper nozzle is located above the water outlet end of the lower nozzle.

3. A steel hot sawing machine according to claim 1, characterized in that: The water outlet end of the upper nozzle and the water outlet end of the lower nozzle are both directed toward the edge of the circular saw blade.

4. A steel section hot sawing machine according to claim 1, characterized in that: The lower part of the dust cover tapers from top to bottom along the vertical direction.

5. A steel section hot sawing machine according to claim 1, characterized in that: A liquid inlet is arranged on the upper part of the cooling water tank, and the liquid inlet is located just below the open end of the dust cover.

6. A steel section hot sawing machine according to claim 5, characterized in that: A filter plate is detachably mounted at the liquid inlet of the cooling water tank.

7. A steel hot sawing machine according to claim 1, characterized in that: The cooling water device also includes a water pump, and the water delivery pipe group includes a water inlet pipe and a water outlet pipe. The water inlet pipe is connected to the water inlet of the water pump and the cooling water tank, and the water outlet pipe is connected to the outlet of the water pump and the nozzle.

8. The hot sawing machine for steel sections according to claim 1, characterized in that: The steel section hot sawing machine also includes a lifting device fixedly arranged on the frame for adjusting the height position of the motor.

9. A steel section hot sawing machine according to claim 8, characterized in that: The lifting device includes a support frame vertically and fixedly arranged on the frame, a vertical lead screw rotatably connected to the support frame, a nut spirally matched with the lead screw, and a mounting plate fixedly connected to the nut, the motor is fixedly mounted on the mounting plate, a vertical slide rail is fixedly arranged on the support frame, and a slider slidably connected to the slide rail is arranged on the mounting plate.

10. The hot sawing machine for steel sections according to claim 1, characterized in that: A through hole is provided on the motor mounting side of the dust cover for the motor shaft of the motor to pass through, and a sealing plate is provided on the outer side of the through hole, and the sealing plate is fixedly connected to the motor seat of the motor, and the outer edge size of the sealing plate is larger than the outer edge size of the through hole.

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