Deformed steel bar cold shearing machine

Abstract

The invention provides a deformed steel bar cold shearing machine which comprises a strip-shaped power shell, a driving motor is mounted in the strip-shaped power shell, a telescopic strip is arranged at one end of the strip-shaped power shell and slidably connected with a sliding sleeve, and mounting strips are arranged on the two opposite sides of the sliding sleeve in the direction away from the strip-shaped power shell. A mounting frame is arranged at the position, between the two mounting strips, of the free end of the telescopic strip, and the free end of the mounting frame is rotationally connected with a cold cutting disc driven by a driving motor to rotate. An electromagnet is installed in the middle of the outer side of the installation strip, a fixed C-shaped clamping sleeve is arranged at the free end of the installation strip, a first sliding shaft is connected between the fixed C-shaped clamping sleeve and the corresponding electromagnet, the fixed C-shaped clamping sleeve is slidably connected with a movable C-shaped clamping sleeve matched with the fixed C-shaped clamping sleeve, and one side of the movable C-shaped clamping sleeve is connected with a first pushing piece in sliding connection with the first sliding shaft through a connecting strip. A first reset spring is arranged between the first push piece and the corresponding electromagnet. The screw-thread steel cutting device can be used for directly, efficiently and accurately cutting the fixedly mounted screw-thread steel on site.

Description

Technical Field

[0001] The invention belongs to the technical field of threaded steel cutting and relates to a threaded steel cold shearing machine. Background Art

[0002] As an important building material, rebar is widely used in construction projects. It not only has high tensile strength and good welding performance, but also has ribs on its surface that firmly bond with concrete, which can significantly improve the bearing capacity of the structure. During the construction process, rebar often needs to be cut to meet different construction needs.

[0003] At present, there are two main methods for cutting rebar: one is cutting with a grinding disc, and the other is cutting with a cold saw. The grinding disc cutting method is simple to operate and low in cost, but it is insufficient in cutting efficiency and precision, especially for rebar with higher hardness, which may cause the cutting surface to be not smooth enough, affecting the subsequent processing and installation quality. In contrast, when cutting rebar with a cold saw, because it uses a high-speed rotating saw blade and reduces the influence of friction heat through a cooling system during the cutting process, it can achieve a more precise and smooth cutting effect, improving the cutting quality and efficiency.

[0004] However, whether using a grinding disc or a cold saw, these cutting methods require that the rebar must be in a movable state, that is, the rebar needs to be placed on the workbench of the cutting machine for processing. This limitation makes traditional cutting methods powerless in some special cases, such as when the rebar has been fixed and installed, or when it cannot be disassembled and moved to the cutting equipment due to specific conditions. Summary of the invention

[0005] The object of the present invention is to provide a threaded steel cold shearing machine which can operate in a complex environment and can directly cut the fixedly installed threaded steel efficiently and accurately on site.

[0006] In order to solve the above technical problems, the present invention provides a threaded steel cold shearing machine, comprising a strip-shaped power shell, a driving motor is installed in the strip-shaped power shell, a telescopic strip is arranged at one end of the strip-shaped power shell, the telescopic strip is slidably connected with a sliding sleeve, and mounting strips are arranged on opposite sides of the sliding sleeve in a direction away from the strip-shaped power shell, a mounting frame is arranged at the free end of the telescopic strip between the two mounting strips, a cold cutting disc driven to rotate by the driving motor is rotatably connected to the free end of the mounting frame, and a plurality of cold cutting saw teeth are arranged on the outer side of the cold cutting disc;

[0007] An electromagnet is installed in the middle part of the outer side of each mounting strip, and a fixed C-shaped sleeve with an opening facing outward is provided at the free end of each mounting strip, a first sliding shaft is connected between each fixed C-shaped sleeve and the corresponding electromagnet, and each fixed C-shaped sleeve is slidably connected to a movable C-shaped sleeve matching therewith, and a connecting strip is provided on one side of each movable C-shaped sleeve toward the strip-shaped power shell, and a first push piece slidably connected to the corresponding first sliding shaft is provided at the free end of each connecting strip, and each first push piece is provided with a first sliding hole slidably connected to the corresponding first sliding shaft, and a first return spring is provided between each first push piece and the corresponding electromagnet.

[0008] By adopting the above technical solution, when cutting the threaded steel, the operating device is used to clamp the threaded steel between the two movable C-shaped jackets and the fixed C-shaped jacket, and then the two electromagnets are started, so that the two electromagnets are energized to generate magnetism, attracting the first push piece, and driving the movable C-shaped jacket to slide toward the fixed C-shaped jacket to clamp the threaded steel. At this time, the driving motor is started to drive the cold cutting disk to rotate at high speed to cut the threaded steel, and at the same time, the strip power shell is pushed to move in the direction of the threaded steel to increase the thrust for cutting the threaded steel, so that the threaded steel can be quickly cut and sheared. After the cutting is completed, the driving motor and the electromagnet are controlled to be powered off. After the electromagnet is powered off, it loses its magnetism, and the movable C-shaped jacket is pushed under the action of the first reset spring to remove the cut threaded steel.

[0009] The present invention is further configured such that the sliding sleeve is provided with two support plates corresponding to the electromagnets at one end close to the strip-shaped power shell, a second sliding shaft is connected between each support plate and the corresponding electromagnet, the sliding sleeve is provided with a strip sliding groove arranged along its length direction on one side of each support plate, sliding bars slidably connected to the corresponding strip sliding groove are provided on both sides of the telescopic bar, a second push plate slidably connected to the corresponding second sliding shaft is provided at the free end of each slide bar, each second push plate is provided with a second sliding hole slidably connected to the corresponding second sliding shaft, and a second return spring is provided between each second push plate and the corresponding electromagnet.

[0010] By adopting the above technical solution, with the cooperation of the second push piece and the electromagnet, after the electromagnet is energized, it generates magnetic attraction to attract the second push piece closer, so that the cold cutting disk can generate an attraction to move in the direction of the rebar, and during cutting, it assists manual pushing of the cold cutting disk to continuously squeeze and cut the rebar, making the cutting of the rebar more labor-saving.

[0011] The present invention is further configured such that a rotating hole is provided along the length direction of the telescopic strip, a driving shaft connected to the power output shaft of the driving motor is rotatably connected in the rotating hole, a driving bevel gear is provided at the free end of the driving shaft, and one end of the cold cutting disc extends out of the mounting frame and is provided with a transmission bevel gear meshing with the driving bevel gear.

[0012] The present invention is further configured such that the mounting frame is a U-shaped mounting frame.

[0013] The present invention is further configured such that an arcuate slag blocking strip is provided on one side of the sliding sleeve at one end away from the strip-shaped power shell and between two mounting strips, and an opening of the arcuate slag blocking strip faces the cold cutting disc.

[0014] The present invention is further configured such that a handle is provided at one end of the strip-shaped power housing away from the sliding sleeve.

[0015] The present invention is further configured such that a power line for connecting electricity is connected to the outer side of the strip-shaped power shell.

[0016] The present invention is further configured such that a cutting button for controlling the operation of the drive motor and a clamping button for controlling the operation of the electromagnet are provided on the outer side of the strip-shaped power housing.

[0017] The present invention is further configured such that the cold cutting disc is made of high-speed steel.

[0018] The present invention is further configured such that a C-shaped rubber pad is provided on the inner side of each fixed C-shaped jacket and each movable C-shaped jacket.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] First, the portable cutting equipment of the present invention breaks through the limitations of traditional fixed cutting machines and is no longer limited to a fixed workbench, which means that it can be directly operated at any location where rebar cutting is required, in a construction site with a small space and a complex working environment. Especially for those rebars that have been installed and are difficult to move, the portable equipment undoubtedly provides a more efficient and convenient solution, greatly improving the operational flexibility of the construction site.

[0021] Secondly, in the design of the portable cutting tool, the cooperation mechanism of the second push piece and the electromagnet is cleverly introduced. When the electromagnet is energized, a piston effect will be generated, and the magnetic attraction of the second push piece will attract the second push piece, thereby forming a stable centripetal force between the cold cutting disc and the rebar. It can not only assist the manual pushing of the cold cutting disc to continuously squeeze and cut the rebar, making the entire cutting process more labor-saving, but also ensure the consistency and accuracy of the cutting action.

[0022] Third, the threaded steel cutting equipment of the present invention effectively reduces many tedious steps involved in traditional cutting methods. There is no need to remove the threaded steel from the installation position first. Such process simplification not only saves a lot of manpower and material resources, but also greatly reduces the risk of material loss due to improper handling or processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a planar structural diagram of the present invention;

[0025] Figure 3 Used to demonstrate the connection relationship between the sliding sleeve, the mounting strip, the electromagnet, the fixed C-type clamp and the movable C-type clamp;

[0026] Figure 4 Used to demonstrate the principle of driving the cold cutting disc to rotate;

[0027] Figure 5 Used to show the rotating holes in the telescopic strip.

[0028] Among them, 1. strip power shell; 2. telescopic strip; 3. sliding sleeve; 4. mounting strip; 5. mounting frame; 6. cold cutting disc; 7. cold cutting saw teeth; 8. rotating hole; 9. driving shaft; 10. driving bevel gear; 11. transmission bevel gear; 12. arc slag blocking strip; 13. electromagnet; 14. fixed C-type clamping sleeve; 15. first sliding shaft; 16. movable C-type clamping sleeve; 17. C-type rubber pad; 18. connecting strip; 19. first push piece; 20. first sliding hole; 21. first return spring; 22. support piece; 23. second sliding shaft; 24. strip slide groove; 25. slide bar; 26. second push piece; 27. second sliding hole; 28. second return spring; 29. ​​handle; 30. power cord; 31. cutting button; 32. clamping button. DETAILED DESCRIPTION

[0029] The following is a further detailed description of a threaded steel cold shear proposed by the present invention in combination with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will become clearer. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. The same or similar reference numerals in the accompanying drawings represent the same or similar components.

[0030] Example, see Figure 1-5A threaded steel cold shearing machine comprises a strip-shaped power shell 1, in which a driving motor (not shown) is installed, a telescopic strip 2 is arranged at one end of the strip power shell 1, the telescopic strip 2 is slidably connected to a sliding sleeve 3, and two opposite sides of the sliding sleeve 3 are provided with a mounting strip 4 away from the strip power shell 1, a U-shaped mounting frame 5 is arranged between the two mounting strips 4 at the free end of the telescopic strip 2, and a cold cutting disc 6 driven to rotate by the driving motor is rotatably connected at the free end of the mounting frame 5, the cold cutting disc 6 is parallel to the mounting strip 4, and a plurality of cold cutting saw teeth 7 are arranged on the outer side of the cold cutting disc 6, and the cold cutting disc 6 is made of high-speed steel (HSS) material. HSS tools are widely used in cold cutting saws because they can withstand higher cutting speeds and remain sharp during long-term work. A rotating hole 8 is provided along the length direction of the telescopic bar 2, and a driving shaft 9 connected to the power output shaft of the driving motor is rotatably connected in the rotating hole 8. A driving bevel gear 10 is provided at the free end of the driving shaft 9. One end of the cold cutting disc 6 extends out of the mounting frame 5 and is provided with a transmission bevel gear 11 meshing with the driving bevel gear 10, so that the cold cutting disc 6 can be driven by the driving motor to rotate and cut. An arc-shaped slag blocking bar 12 is provided on one side between the two mounting bars 4 at one end of the sliding sleeve 3 away from the bar-shaped power shell 1, and the opening of the arc-shaped slag blocking bar 12 faces the cold cutting disc 6, and the cut residue is thrown back onto the arc-shaped slag blocking bar 12 to prevent the residue from hitting the operator backward.

[0031] An electromagnet 13 is installed in the middle part of the outer side of each mounting bar 4, and a fixed C-shaped sleeve 14 with an opening facing outward is provided at the free end of each mounting bar 4. A first sliding shaft 15 is connected between each fixed C-shaped sleeve 14 and the corresponding electromagnet 13, and each fixed C-shaped sleeve 14 is slidably connected to a movable C-shaped sleeve 16 that matches it. A C-shaped rubber pad 17 is provided on the inner side of each fixed C-shaped sleeve 14 and each movable C-shaped sleeve 16. Through the C-shaped rubber pad 17, the fixed C-shaped sleeve 14 and the movable C-shaped sleeve 16 can cooperate with each other to clamp the threaded steel more firmly. A connecting strip 18 is provided on one side of each movable C-shaped jacket 16 in the direction of the strip power shell 1, and a first push piece 19 is provided at the free end of each connecting strip 18 for sliding connection with the corresponding first sliding shaft 15. The connecting strip 18, the connecting strip 18 and the movable C-shaped jacket 16 are connected in a U shape, and each first push piece 19 is provided with a first sliding hole 20 for sliding connection with the corresponding first sliding shaft 15. A first return spring 21 is provided between each first push piece 19 and the corresponding electromagnet 13. When the electromagnet 13 is energized to generate magnetism, the first push piece 19 is attracted, so that the movable C-shaped jacket 16 slides toward the fixed C-shaped jacket 14 to clamp the threaded steel bar.

[0032] The sliding sleeve 3 is provided with two supporting pieces 22 corresponding to the electromagnet 13 at one end close to the strip-shaped power shell 1, and a second sliding shaft 23 is connected between each supporting piece 22 and the corresponding electromagnet 13. The sliding sleeve 3 is provided with a strip sliding groove 24 arranged along the length direction on one side of each supporting piece 22, and a sliding bar 25 slidably connected to the corresponding strip sliding groove 24 is provided on both sides of the telescopic strip 2. A second push piece 26 slidably connected to the corresponding second sliding shaft 23 is provided at the free end of each sliding bar 25, and each second push piece 26 is provided with a second sliding hole 27 slidably connected to the corresponding second sliding shaft 23, and a second reset spring 28 is provided between each second push piece 26 and the corresponding electromagnet 13. When the electromagnet 13 is energized, the second push piece 26 is attracted magnetically, and the cold cutting disc 6 is driven to move in the direction of the threaded steel bar.

[0033] A handle 29 is provided at one end of the strip power housing 1 away from the sliding sleeve 3, which is convenient for operation by holding the handle 29. A power cord 30 for connecting electricity is connected to the outside of the strip power housing 1. A cutting button 31 for controlling the operation of the drive motor and a clamping button 32 for controlling the operation of the electromagnet 13 are provided on the outside of the strip power housing 1.

[0034] Usage: When cutting threaded steel, operate the device to make the threaded steel stuck between the two movable C-type jackets 16 and the fixed C-type jacket 14, then start the two electromagnets 13, energize the two electromagnets 13 to generate magnetism, attract the first push piece 19, drive the movable C-type jacket 16 to slide in the direction of the fixed C-type jacket 14 to clamp the threaded steel, and the electromagnet 13 attracts the second push piece 26, so that the strip power shell 1 has a pulling force to move in the direction of the threaded steel. At this time, start the drive motor to drive the cold cutting disk 6 to rotate at high speed to cut the threaded steel, and at the same time push the strip power shell 1 to move in the direction of the threaded steel, increase the thrust for cutting the threaded steel, and quickly cut the threaded steel. After cutting, control the drive motor and the electromagnet 13 to cut off the power. After the electromagnet 13 is cut off, it loses its magnetism, and under the action of the first reset spring 21 and the second reset spring 28, the movable C-type jacket 16 and the cold cutting disk 6 are reset, and the cut threaded steel can be removed.

[0035] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0036] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A threaded steel cold shearing machine, comprising a strip-shaped power shell (1), a driving motor is installed in the strip-shaped power shell (1), and a telescopic strip (2) is arranged at one end of the strip-shaped power shell (1). It is characterized in that The telescopic strip (2) is slidably connected to a sliding sleeve (3), and mounting strips (4) are arranged on opposite sides of the sliding sleeve (3) in a direction away from the strip-shaped power shell (1). A mounting frame (5) is arranged between the two mounting strips (4) at the free end of the telescopic strip (2), and the free end of the mounting frame (5) is rotatably connected to a cold cutting disc (6) driven to rotate by the driving motor, and a plurality of cold cutting saw teeth (7) are arranged on the outer side of the cold cutting disc (6); An electromagnet (13) is installed in the middle of the outer side of each mounting strip (4), and a fixed C-shaped jacket (14) with an opening facing outward is provided at the free end of each mounting strip (4), and a first sliding shaft (15) is connected between each fixed C-shaped jacket (14) and the corresponding electromagnet (13), and each fixed C-shaped jacket (14) is slidably connected to a movable C-shaped jacket (16) matched therewith, and a connecting strip (18) is provided on one side of each movable C-shaped jacket (16) in the direction of the strip-shaped power shell (1), and a first push piece (19) slidably connected to the corresponding first sliding shaft (15) is provided at the free end of each connecting strip (18), and each first push piece (19) is provided with a first sliding hole (20) slidably connected to the corresponding first sliding shaft (15), and a first return spring (21) is provided between each first push piece (19) and the corresponding electromagnet (13).

2. A threaded steel cold shearing machine according to claim 1, It is characterized in that The sliding sleeve (3) is provided with two supporting sheets (22) corresponding to the electromagnets (13) at one end close to the strip-shaped power shell (1), and a second sliding shaft (23) is connected between each supporting sheet (22) and the corresponding electromagnet (13). The sliding sleeve (3) is provided with a strip-shaped sliding groove (24) arranged along its length direction on one side of each supporting sheet (22). Both sides of the telescopic strip (2) are provided with sliding strips (25) slidably connected to the corresponding strip-shaped sliding groove (24). The free end of each sliding strip (25) is provided with a second push sheet (26) slidably connected to the corresponding second sliding shaft (23), and each second push sheet (26) is provided with a second sliding hole (27) slidably connected to the corresponding second sliding shaft (23). A second return spring (28) is provided between each second push sheet (26) and the corresponding electromagnet (13).

3. A threaded steel cold shearing machine according to claim 1, It is characterized in that A rotating hole (8) is provided through the telescopic strip (2) and is arranged along the length direction thereof. A driving shaft (9) connected to the power output shaft of the driving motor is rotatably connected in the rotating hole (8). A driving bevel gear (10) is provided at the free end of the driving shaft (9). One end of the cold cutting disc (6) extends out of the mounting frame (5) and is provided with a transmission bevel gear (11) meshing with the driving bevel gear (10).

4. A threaded steel cold shearing machine according to claim 3, It is characterized in that The mounting frame (5) is a U-shaped mounting frame (5).

5. A threaded steel cold shearing machine according to claim 1, It is characterized in that An arc-shaped slag-blocking strip (12) is provided on one side of the sliding sleeve (3) between two mounting strips (4) at one end away from the strip-shaped power shell (1), and the opening of the arc-shaped slag-blocking strip (12) faces the cold cutting disc (6).

6. A threaded steel cold shearing machine according to claim 1, It is characterized in that A handle (29) is provided at one end of the strip-shaped power housing (1) away from the sliding sleeve (3).

7. A threaded steel cold shearing machine according to claim 1, It is characterized in that The outer side of the strip-shaped power housing (1) is connected to a power line (30) for connecting electricity.

8. A threaded steel cold shearing machine according to claim 1, It is characterized in that A cutting button (31) for controlling the operation of the drive motor and a clamping button (32) for controlling the operation of the electromagnet (13) are arranged on the outer side of the strip-shaped power housing (1).

9. A threaded steel cold shearing machine according to claim 1, It is characterized in that The cold cutting disc (6) is made of high-speed steel.

10. A threaded steel cold shearing machine according to any one of claims 1 to 9, It is characterized in that A C-shaped rubber pad (17) is arranged on the inner side of each fixed C-shaped jacket (14) and each movable C-shaped jacket (16).

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