A cutting device and cutting process for a seamed steel pipe

Abstract

The present invention discloses a cutting device and a cutting process for a slit steel pipe. The cutting device includes a base, the top surface of the base is provided with a movable assembly, a mounting frame and a cutting box, the interior of the cutting box is provided with an oil cylinder, a knife seat, a cutting knife and a cutting die, a limiting hole is provided on the cutting die, a horizontal limiting rod and a vertical limiting rod are provided on the front of the cutting box, and a discharge hole, a first baffle plate, a second baffle plate, a first discharge trough and a second discharge trough are provided on the cutting box; a controller is also included; the cutting process includes step one, determining the position of the limiting rod; step two, positioning the slit steel pipe; step three, cutting the slit steel pipe; and step four, resetting the movable assembly. The present invention limits the slit steel pipe by limiting the limiting hole, the horizontal limiting rod and the vertical limiting rod, thereby increasing stability and facilitating cutting; the slit position on the slit steel pipe is opposite to the feeding direction of the cutting knife, thereby preventing the slit position from being deformed; the cutting knife is driven by the oil cylinder to perform cutting, thereby improving work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe cutting devices, and in particular to a cutting device and a cutting process for a slit steel pipe. Background Art

[0002] In the process of door and window processing, rectangular steel pipes with slits on the top surface are needed, such as Figure 6 As shown, due to the slit on the top surface of the rectangular steel pipe, the rectangular steel pipe is easily deformed when it is cut, which affects its later use; the existing steel pipe cutting device generally drives the cutting knife to cut through the oil cylinder, and the force of the oil cylinder is large. The slit position of the rectangular steel pipe will be deformed during cutting, which affects its use; therefore, the commonly used cutting method is manual cutting. The staff fixes the rectangular steel pipe and uses the cutting knife to cut it. The force during manual cutting is small and it is not easy to deform. It is also necessary to pay attention to the slit position during cutting to prevent the slit position from deforming. However, manual cutting is inefficient and the labor intensity of the staff is high, which affects production efficiency. Summary of the Invention

[0003] The purpose of the present invention is to provide a cutting device and a cutting process for a slit steel pipe, so as to solve the problems in the prior art of lacking a device for cutting slit steel pipes, low manual cutting efficiency and high labor intensity for workers.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention provides a cutting device and a cutting process for a slit steel pipe, comprising a base, a moving component provided on the top surface of the base, a mounting bracket provided on the top surface of the moving component, a cutting box provided on the top surface of the mounting bracket, a cylinder provided on one side of the cutting box, a working end of the cylinder extending to the interior of the cutting box and connected to a knife holder, a cutting knife provided on the knife holder, a cutting die matching the cutting knife provided inside the cutting box, a limiting hole provided on the cutting die, a horizontal limiting rod and a vertical limiting rod provided on the front surface of the cutting box, a discharge hole provided on the side of the cutting box close to the cutting die, a first stop plate and a second stop plate provided on both sides of the discharge hole, and a first discharge trough and a second discharge trough provided on the bottom of the cutting box; and a controller is also included, and the moving component and the cylinder are both electrically connected to the controller.

[0006] Furthermore, the moving assembly includes a motor, which is installed on the base, and the output shaft of the motor is connected to a screw, both ends of the screw are connected to the top surface of the base through bearings, a screw seat is threadedly connected to the screw, the top surface of the screw seat is connected to a moving plate, and the mounting frame is connected to the top surface of the moving plate by bolts; guide rods are symmetrically arranged on both sides of the screw, and a guide seat matching the guide rods is arranged on the bottom surface of the moving plate; the motor is electrically connected to the controller.

[0007] Furthermore, the cutting mold includes two mold monomers, the two mold monomers are connected together by connecting bolts, a gap for the cutting blade to pass through is provided between the two mold monomers, and the gap is connected to the discharge hole.

[0008] Furthermore, a limiting sleeve is provided in the gap, the limiting sleeve is provided on the connecting bolt, and two ends of the limiting sleeve are in contact with opposite surfaces of the two mold units.

[0009] Furthermore, the horizontal limit rod and the vertical limit rod have the same structure. A connecting plate is provided on the horizontal limit rod, and an adjustment hole is opened on the connecting plate. Bolts are welded on the front of the cutting box. The bolts pass through the adjustment holes and are locked in place by nuts.

[0010] Furthermore, the adjustment hole is configured as a waist-shaped hole with one end open.

[0011] Furthermore, a third discharge chute is provided behind the cutting box and below the cutting die.

[0012] A process for cutting a slit steel pipe, using the slit steel pipe cutting device as described above, is characterized in that it specifically includes the following steps:

[0013] Step 1: Determine the position of the limit rod: Install the horizontal limit rod so that the top surface of the horizontal limit rod is flush with the bottom surface of the limit hole on the cutting mold, and then adjust the position of the vertical limit rod according to the size of the slit steel pipe to be cut so that the distance between the right side of the vertical limit rod and the right side of the limit hole is the same as the width of the slit steel pipe to be cut;

[0014] Step 2: Positioning the slit steel pipe: The slit steel pipe to be cut enters the cutting box from the front, and the surface with the slit on the slit steel pipe is opposite to the feeding direction of the cutting knife. The slit steel pipe to be cut is positioned by the horizontal limiting rod, the vertical limiting rod and the limiting hole;

[0015] Step 3: Cutting the slit steel pipe: The controller starts the motor, which drives the lead screw to rotate clockwise, thereby driving the movable plate to move forward. When the movable plate moves to a predetermined position, the motor stops working and starts the oil cylinder, which drives the cutting knife to cut the slit steel pipe.

[0016] Step 4, resetting the moving assembly: the controller starts the motor, and the motor drives the lead screw to rotate counterclockwise, thereby driving the moving plate to move backward to prepare for the next cutting.

[0017] Furthermore, in step three, the cutting knife cuts from the surface of the slit steel pipe opposite to the slit.

[0018] Compared with the prior art, the present invention has the following beneficial technical effects:

[0019] The present invention provides a cutting device and a cutting process for a slit steel pipe. The three sides of the slit steel pipe are limited by a limiting hole, a horizontal limiting rod and a vertical limiting rod, thereby increasing the stability of the slit steel pipe and facilitating cutting. The slit position on the slit steel pipe is opposite to the feed direction of the cutting knife, thereby preventing the slit position from being deformed during the cutting process. The cutting knife is driven by an oil cylinder to perform cutting, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 This is a front view of the cutting device for the seamed steel pipe of the present invention;

[0022] Figure 2 This is a rear view of the cutting device for the seamed steel pipe of the present invention;

[0023] Figure 3 It is a side view of the cutting box of the present invention;

[0024] Figure 4 This is a side view of the cutting die of the present invention;

[0025] Figure 5 A top view of the mobile assembly of the present invention;

[0026] Figure 6 This is a schematic structural diagram of the seamed steel pipe of the present invention;

[0027] Explanation of the accompanying drawings: 1. Base; 2. Moving assembly; 201. Moving plate; 202. Screw seat; 203. Motor; 204. Screw; 205. Guide seat; 206. Guide rod; 3. Mounting frame; 4. Cutting box; 401. Discharge hole; 5. Cylinder; 6. Knife seat; 7. Cutting knife; 8. Cutting mold; 801. Limit hole; 802. Mold unit; 803. Connecting bolt; 804. Limit sleeve; 9. Horizontal limit rod; 901. Connecting plate; 901-1, adjustment hole; 10. Vertical limit rod; 11. First baffle plate; 12. Second baffle plate; 13. First discharge trough; 14. Second discharge trough; 15. Third discharge trough. DETAILED DESCRIPTION

[0028] like Figure 1-6 As shown, a cutting device for a slit steel pipe comprises a base 1, a moving component 2 is provided on the top surface of the base 1, a mounting frame 3 is connected to the top surface of the moving component 2 by bolts, a cutting box 4 is connected to the top surface of the mounting frame 3 by bolts, a cylinder 5 is installed on one side of the cutting box 4, a working end of the cylinder 5 extends to the interior of the cutting box 4 and is connected to a knife holder 6, a cutting knife 7 is installed on the knife holder 6, a cutting die 8 matching the cutting knife 7 is connected to the interior of the cutting box 4, a limiting hole 801 is provided on the cutting die 8, a horizontal limiting rod 9 and a vertical limiting rod 10 are provided on the front of the cutting box 4, a discharge hole 401 is provided on the side of the cutting box 4 close to the cutting die 8, and a first baffle plate 11 and a first baffle plate 11 are welded on both sides of the discharge hole 401. The second baffle plate 12, the bottom of the cutting box 4 is welded with a first discharge trough 13 and a second discharge trough 14; it also includes a controller, and the moving component 2 and the cylinder 5 are electrically connected to the controller; specifically, the limiting hole 801, the horizontal limiting rod 9 and the vertical limiting rod 10 in the present invention limit the three sides of the slit steel pipe, increase the stability of the slit steel pipe, and facilitate cutting; the cutting knife 7 is arranged in the cutting box 4, and the cutting box 4 can play a protective role to prevent waste from splashing, avoid dust, and avoid polluting the working environment; the first baffle plate 11 and the second baffle plate 12 can prevent waste from splashing at the discharge hole 401, and the waste slides along the first discharge trough 13 and the second discharge trough 14, which is convenient for collection and can improve the working environment; the cutting knife 7 is driven by the cylinder 5 to work, with low noise and high work efficiency.

[0029] Specifically, if Figure 2 、 5As shown, the moving component 2 includes a motor 203, which is installed on the base 1, and the output shaft of the motor 203 is connected to a screw 204, both ends of the screw 204 are connected to the top surface of the base 1 through bearings, and a screw seat 202 is threadedly connected to the screw 204, the top surface of the screw seat 202 is connected to the moving plate 201, and the mounting frame 3 is connected to the top surface of the moving plate 201 by bolts; guide rods 206 are symmetrically arranged on both sides of the screw 204, and both ends of the guide rods 206 are connected to brackets, which are connected to the top surface of the base 1 by bolts, and the bottom surface of the moving plate 201 is provided with a guide seat 205 matching the guide rod 206; the motor 203 is electrically connected to the controller.

[0030] like Figure 4 As shown, the cutting mold 8 includes two mold monomers 802, and the two mold monomers 802 are connected together by a connecting bolt 803. A gap is set between the two mold monomers 802 for the cutting knife 7 to pass through, and the gap is connected to the discharge hole 401; specifically, a limiting sleeve 804 is set in the gap, and the limiting sleeve 804 is sleeved on the connecting bolt 803, and the two ends of the limiting sleeve 804 are in contact with the opposite surfaces of the two mold monomers 802.

[0031] The horizontal limit rod 9 and the vertical limit rod 10 have the same structure. A connecting plate 901 is provided on the horizontal limit rod 9. An adjustment hole 901-1 is provided on the connecting plate 901. A bolt is welded on the front of the cutting box 4. The bolt passes through the adjustment hole 901-1 and is locked in place by a nut; the adjustment hole 901-1 is set as a waist-shaped hole with one end open; by setting the waist-shaped hole, the position of the horizontal limit rod 9 can be adjusted, so that it is suitable for slit steel pipes of different specifications and models.

[0032] like Figure 2 、 3 As shown, a third discharge chute 15 is welded behind the cutting box 4 and below the cutting die 8 , and the third discharge chute 15 is used to collect cutting waste falling from the limiting hole 801 .

[0033] A process for cutting a slit steel pipe, using the slit steel pipe cutting device as described above, is characterized in that it specifically includes the following steps:

[0034] Step 1: Determine the position of the limit rod: Install the horizontal limit rod 9 so that the top surface of the horizontal limit rod 9 is flush with the bottom surface of the limit hole 801 on the cutting die 8, and then adjust the position of the vertical limit rod 10 according to the size of the slit steel pipe to be cut so that the distance between the right side of the vertical limit rod 10 and the right side of the limit hole 801 is the same as the width of the slit steel pipe to be cut;

[0035] Step 2: Positioning the slit steel pipe: The slit steel pipe to be cut enters from the front of the cutting box 4. The surface with the slit on the slit steel pipe is opposite to the feeding direction of the cutting knife 7. The slit steel pipe to be cut is positioned by the horizontal limiting rod 9, the vertical limiting rod 10 and the limiting hole 801.

[0036] Step 3: Cutting the slit steel pipe: The controller starts the motor 203, which drives the lead screw 204 to rotate clockwise, thereby driving the movable plate 201 to move forward. When the movable plate 201 moves to a predetermined position, the motor 203 stops working and starts the oil cylinder 5, which drives the cutting blade 7 to cut the slit steel pipe.

[0037] Step 4, resetting the moving assembly: the controller starts the motor 203, and the motor 203 drives the lead screw 204 to rotate counterclockwise, thereby driving the moving plate 201 to move backward to prepare for the next cutting.

[0038] Specifically, in step three, the cutting knife 7 cuts from the surface of the slit steel pipe opposite to the slit. Since the cutting box 4 and the cutting knife 7 are arranged at an angle, the cutting knife 7 cuts along the edge of the slit steel pipe during cutting, which can further prevent the slit steel pipe from deformation.

[0039] In this embodiment, the cutting box 4 is arranged at an angle and the cutting knife 7 is inverted. When in use, the top surface of the slit steel pipe is slit, and cutting is performed from the bottom of the slit steel pipe, and the slit position will not be deformed during cutting; in another embodiment, the cutting knife 7 is arranged forward. When in use, the slit steel pipe is turned upside down, that is, the slit of the slit steel pipe faces downward, and cutting is performed from the top of the slit steel pipe. Since the cutting position is on the opposite side of the slit position, the slit position will not be deformed.

[0040] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A cutting device for a seamed steel pipe, characterized in that: The invention comprises a base (1), a moving assembly (2) is provided on the top surface of the base (1), a mounting frame (3) is provided on the top surface of the moving assembly (2), a cutting box (4) is provided on the top surface of the mounting frame (3), a cylinder (5) is provided on one side of the cutting box (4), a working end of the cylinder (5) extends to the interior of the cutting box (4) and is connected to a knife seat (6), a cutting knife (7) is provided on the knife seat (6), a cutting die (8) matching the cutting knife (7) is provided inside the cutting box (4), a limiting hole (801) is provided on the cutting die (8), a horizontal limiting rod (9) and a vertical limiting rod (10) are provided on the front surface of the cutting box (4); the horizontal limiting rod (9) and the vertical limiting rod (10) have the same structure, the horizontal limiting rod (9) and the vertical limiting rod (10) are provided with the same structure, and the horizontal limiting rod (9) and the vertical limiting rod (10) are provided with the same structure. A connecting plate (901) is provided on the limiting rod (9), and an adjustment hole (901-1) is provided on the connecting plate (901). A bolt is welded on the front of the cutting box (4), and the bolt passes through the adjustment hole (901-1) and is locked in place by a nut; the top surface of the horizontal limiting rod (9) is flush with the bottom surface of the limiting hole (801) on the cutting die (8); a discharge hole (401) is provided on the side of the cutting box (4) close to the cutting die (8), and a first stop plate (11) and a second stop plate (12) are provided on both sides of the discharge hole (401); a first discharge trough (13) and a second discharge trough (14) are provided at the bottom of the cutting box (4); and a controller is also included, and the moving component (2) and the oil cylinder (5) are both electrically connected to the controller.

2. The cutting device for a seamed steel pipe according to claim 1, characterized in that: The moving assembly (2) includes a motor (203), the motor (203) is mounted on the base (1), the output shaft of the motor (203) is connected to a lead screw (204), both ends of the lead screw (204) are connected to the top surface of the base (1) through bearings, a lead screw seat (202) is threadedly connected to the lead screw (204), the top surface of the lead screw seat (202) is connected to the moving plate (201), and the mounting frame (3) is connected to the top surface of the moving plate (201) through bolts; guide rods (206) are symmetrically arranged on both sides of the lead screw (204), and a guide seat (205) matching the guide rods (206) is arranged on the bottom surface of the moving plate (201); the motor (203) is electrically connected to the controller.

3. The cutting device for a seamed steel pipe according to claim 1, characterized in that: The cutting die (8) comprises two die monomers (802), the two die monomers (802) being connected together via a connecting bolt (803), a gap being provided between the two die monomers (802) for the cutting blade (7) to pass through, the gap being in communication with the discharge hole (401).

4. The cutting device for a seamed steel pipe according to claim 3, characterized in that: A limiting sleeve (804) is provided in the gap, the limiting sleeve (804) is sleeved on the connecting bolt (803), and two ends of the limiting sleeve (804) are in contact with opposite surfaces of the two mold monomers (802).

5. The cutting device for a seamed steel pipe according to claim 1, characterized in that: The adjustment hole (901-1) is configured as a waist-shaped hole with one end open.

6. The cutting device for a seamed steel pipe according to claim 1, characterized in that: A third discharge chute (15) is provided behind the cutting box (4) and below the cutting die (8).

7. A process for cutting a slit steel pipe, comprising: cutting the slit steel pipe using the slit steel pipe cutting device according to any one of claims 1 to 6, wherein: The specific steps include: Step 1, determining the position of the limit rod: installing the horizontal limit rod (9) so that the top surface of the horizontal limit rod (9) is flush with the bottom surface of the limit hole (801) on the cutting die (8), and then adjusting the position of the vertical limit rod (10) according to the size of the slit steel pipe to be cut so that the distance between the right side of the vertical limit rod (10) and the right side of the limit hole (801) is the same as the width of the slit steel pipe to be cut; Step 2, positioning of the slit steel pipe: the slit steel pipe to be cut enters from the front of the cutting box (4), the surface with the slit on the slit steel pipe is opposite to the feeding direction of the cutting knife (7), and the slit steel pipe to be cut is positioned by the horizontal limiting rod (9), the vertical limiting rod (10) and the limiting hole (801); Step 3, cutting the slit steel pipe: the controller starts the motor (203), the motor (203) drives the lead screw (204) to rotate clockwise, and then drives the movable plate (201) to move forward. When the movable plate (201) moves to a predetermined position, the motor (203) stops working, and the oil cylinder (5) is started. The oil cylinder (5) drives the cutting knife (7) to cut the slit steel pipe. Step 4, resetting the moving assembly: the controller starts the motor (203), and the motor (203) drives the lead screw (204) to rotate counterclockwise, thereby driving the moving plate (201) to move backward to prepare for the next cutting.

8. The process for cutting a seamed steel pipe according to claim 7, characterized in that: In the step three, the cutting knife (7) cuts from the surface of the slit steel pipe opposite to the slit.

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