Blade anti-collapse structure of automatic pipe cutting machine

Abstract

The utility model discloses a blade anti-collapse structure of an automatic pipe cutting machine, which relates to the technical field of pipe cutting machines, and comprises a base and a cutting assembly arranged on the base and used for cutting pipe fittings, the cutting assembly comprises a blade and a shield covering the blade; the roller bracket structure is used for clamping the pipe fitting and driving the pipe fitting to axially rotate; and one end of the extension cover is in sliding connection with the protective cover. The extension cover is additionally arranged on the basis of the protective cover, the blade is wrapped in a larger range, the safety risk of fragment splashing caused by blade breakage is reduced, and due to the fact that the extension cover is connected with the protective cover in a sliding mode, when the blade is fed, the blade is prevented from falling off. The pipe fitting exerts counter-acting force on the rolling supporting component to drive the extending cover to slide relative to the protective cover, so that the extending cover partially retracts into the protective cover, it is guaranteed that the to-be-cut face of the pipe fitting makes barrier-free contact with the blade, and the blade is protected in a covering mode on the premise that the blade cuts the pipe fitting without being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe cutting machines, and particularly relates to a blade anti-break structure of an automatic pipe cutting machine. Background Technique

[0002] A pipe cutting machine is a cutting device that cuts raw materials such as long bars and long pipes into short materials of a set length. It consists of a base, a cutting head slidably mounted on the base, a hydraulic cylinder for driving the cutting head to feed, and a roller bracket structure. Among them, the cutting head includes a blade and a shield. Generally, the shield is arranged on the blade to protect the safety of operators, prevent the flying chips and aluminum chips during the cutting process from hurting the operators, and reduce the safety risk brought by the flying of fragments when the blade breaks. Therefore, the shield is a very important component.

[0003] Existing technical problems: Since the blade needs to contact the surface of the pipe fitting to perform the feeding and cutting work, in order to prevent affecting the cutting of the pipe fitting by the blade, generally, the covering range of the shield on the blade does not exceed half of the total blade. This limits the protection effect of the shield. When the blade breaks, the fragments of the blade are difficult to be blocked by the shield, so that the fragments fly out at a relatively high initial velocity, which is very likely to cause safety accidents. Content of the Utility Model

[0004] The purpose of the utility model is to provide a blade anti-break structure of an automatic pipe cutting machine to solve the technical problem that the shield of the existing pipe cutting machine on the market cannot fully wrap the blade, resulting in the blade being easily ejected from the shield after breaking and causing safety accidents.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A blade anti-break structure of an automatic pipe cutting machine, comprising:

[0006] A base and a cutting assembly arranged on the base for cutting pipe fittings, the cutting assembly including a blade and a shield covering the outside of the blade;

[0007] A roller bracket structure for clamping the pipe fitting and driving its axial rotation;

[0008] An extension cover slidably connected to one end of the shield;

[0009] A rolling support component arranged at one end of the extension cover close to the pipe fitting, the rolling support component being in rolling contact with the outer surface of the pipe fitting, so that when the blade feeds, the pipe fitting applies a reaction force to the rolling support component to drive the extension cover to slide relative to the shield, ensuring that the cutting surface to be cut of the pipe fitting is in unobstructed contact with the blade.

[0010] As a preferred technical solution of the utility model, the base includes:

[0011] A base;

[0012] A machine platform with a sliding groove is provided, and the machine platform is arranged at the upper end of the base.

[0013] As a preferred technical solution of the present utility model, the cutting assembly further includes:

[0014] A slider slidably arranged in the sliding groove;

[0015] An oil cylinder arranged at the top end of the machine platform, and the piston rod of the oil cylinder penetrates through the machine platform and is connected to the slider;

[0016] A bracket with one end connected to the slider;

[0017] A motor arranged on the bracket, the output shaft of the motor is connected to the blade, and the bracket is connected to the protective cover.

[0018] As a preferred technical solution of the present utility model, the protective cover is provided with a mounting plate on the side close to the bracket, bolt holes are provided at corresponding positions of the mounting plate and the bracket, and bolts are arranged in the bolt holes.

[0019] As a preferred technical solution of the present utility model, a protrusion is arranged on the side of the extension cover, and the protrusion is in sliding fit with a groove provided on the inner wall of the protective cover.

[0020] As a preferred technical solution of the present utility model, the rolling support member includes:

[0021] A connecting frame connected to the extension cover;

[0022] A runner rotatably connected to the connecting frame.

[0023] As a preferred technical solution of the present utility model, a chip removal groove is provided on the outer circumference of the extension cover.

[0024] As a preferred technical solution of the present utility model, the blade anti - breakage structure includes:

[0025] A fixing plate arranged on the inner wall of the extension cover;

[0026] A hinge seat arranged on one side of the fixing plate;

[0027] A buffer plate with end shafts arranged on both sides, and the end shafts are rotatably connected to the hinge seat;

[0028] A spring arranged between the buffer plate and the fixing plate.

[0029] As a preferred technical solution of the present utility model, the blade anti - breakage structure further includes:

[0030] A rack arranged on one side of the extension cover;

[0031] A rotating shaft rotatably connected to the shield;

[0032] A gear engaged with the rack, the gear being connected to one end of the rotating shaft;

[0033] A connecting plate provided at the other end of the rotating shaft;

[0034] A torsion spring with one end connected to the shield and the other end connected to the connecting plate.

[0035] As a preferred technical solution of the present utility model, a protective sheath is provided outside the shield for covering the rotating shaft, the connecting plate and the torsion spring.

[0036] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0037] On the basis of the shield, the present utility model is provided with an extension shield, which wraps the blade in a larger range, reducing the safety risk of debris splashing caused by blade chipping. Since the extension shield is connected to the shield in a sliding manner, when the blade advances, a reaction force is applied to the rolling support component through the pipe fitting to drive the extension shield to slide relative to the shield, so that a part of the extension shield retracts into the shield, ensuring that the cutting surface of the pipe fitting is in unobstructed contact with the blade, and realizing the cage protection of the blade without affecting the cutting of the pipe fitting by the blade. Description of the Drawings

[0038] Figure 1 Is a schematic external three-dimensional structure diagram of the present utility model;

[0039] Figure 2 Is a schematic side view structure diagram of the present utility model;

[0040] Figure 3 Is a schematic three-dimensional structure diagram of the shield, the extension shield and the bracket of the present utility model;

[0041] Figure 4 Is a schematic three-dimensional structure diagram of the shield with partial section of the present utility model;

[0042] Figure 5 Is of the present utility model Figure 4 The enlarged structure diagram at position A;

[0043] Figure 6 Is a schematic three-dimensional structure diagram of the extension shield with partial section of the present utility model;

[0044] Figure 7 Is of the present utility model Figure 6 The enlarged structure diagram at position B.

[0045] In the figure: 1, base; 2, roller bracket structure; 3, machine table; 4, chute; 5, slider; 6, oil cylinder; 7, bracket; 8, motor; 9, blade; 10, guard; 11, bolt; 12, mounting plate; 13, bolt hole; 14, extension cover; 15, protrusion; 16, groove; 17, rack; 18, gear; 19, rotating shaft; 20, connecting plate; 21, torsion spring; 22, chip removal groove; 23, fixing plate; 24, hinge seat; 25, buffer plate; 26, spring; 27, sheath; 28, connecting frame; 29, runner; 30, pipe fitting. Detailed implementation mode

[0046] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0047] Please refer to Figures 1-7 , the present invention provides a technical solution: a blade anti-break structure for an automatic pipe cutting machine, including: a base and a cutting assembly provided on the base for cutting the pipe fitting 30. The cutting assembly includes a blade 9 and a guard 10 covering the outside of the blade 9; a roller bracket structure 2 for clamping the pipe fitting 30 and driving its axial rotation; an extension cover 14 slidably connected to one end of the guard 10; a rolling support member provided at one end of the extension cover 14 close to the pipe fitting 30, and the rolling support member is in rolling contact with the outer surface of the pipe fitting 30, so that when the blade 9 feeds, a reaction force is applied to the rolling support member through the pipe fitting 30 to drive the extension cover 14 to slide relative to the guard 10, ensuring that the surface to be cut of the pipe fitting 30 is in unobstructed contact with the blade 9;

[0048] Adopting the above technical solution can provide shroud protection for the blade 9 without affecting the cutting of the pipe fitting 30 by the blade 9. Since the extension cover 14 is added on the basis of the guard 10, the extension cover 14 can cooperate with the guard 10 to wrap the blade 9 in a larger range, reducing the safety risk of debris splashing caused by the blade 9 breaking. Since the extension cover 14 is slidably connected to the guard 10, when the blade 9 feeds, a reaction force is applied to the rolling support member through the pipe fitting 30 to drive the extension cover 14 to slide relative to the guard 10, so that a part of the extension cover 14 retracts into the guard 10, ensuring that the surface to be cut of the pipe fitting 30 is in unobstructed contact with the blade 9. The roller bracket structure 2 rotates the pipe fitting 30 placed on its upper end to ensure that the outer circumference of the pipe fitting 30 can come into contact with the blade 9, thereby cutting the pipe fitting 30 annularly.

[0049] Such as Figure 1 and Figure 2As shown, in this embodiment, the base includes: a base 1; a machine table 3 provided with a chute 4, and the machine table 3 is arranged at the upper end of the base 1; the cutting assembly further includes: a slider 5 slidably arranged in the chute 4; an oil cylinder 6 arranged at the top of the machine table 3, and the piston rod of the oil cylinder 6 penetrates through the machine table 3 and is connected to the slider 5; a bracket 7 with one end connected to the slider 5; a motor 8 arranged on the bracket 7, the output shaft of the motor 8 is connected to a blade 9, and the bracket 7 is connected to a shield 10;

[0050] Adopting the above technical solution can drive the blade 9 to rotate and cut the pipe fitting 30. During use, start the motor 8 to drive the blade 9 to rotate, and then cooperate with the oil cylinder 6 through the hydraulic system to drive its piston rod to move. The piston rod drives the slider 5 to slide along the chute 4 of the machine table 3, thereby driving the bracket 7 connected to the slider 5 to move synchronously, and the bracket 7 drives the blade 9 to feed into the pipe fitting 30.

[0051] As Figure 3 shown, in this embodiment, the shield 10 is provided with a mounting plate 12 on the side close to the bracket 7. Boltholes 13 are opened at the corresponding positions of the mounting plate 12 and the bracket 7, and bolts 11 are arranged in the boltholes 13;

[0052] Adopting the above technical solution can facilitate the installation and disassembly of the shield 10. When it is necessary to disassemble the shield 10, use a screwdriver to screw out the bolts 11 from the boltholes 13, so that the fixing between the mounting plate 12 and the bracket 7 is released, and thus the shield 10 can be disassembled from the bracket 7.

[0053] As Figure 4 and Figure 5 shown, in this embodiment, a protrusion 15 is arranged on the side of the extension cover 14, and the protrusion 15 is slidably matched with a groove 16 opened on the inner wall of the shield 10;

[0054] Adopting the above technical solution can ensure that the extension cover 14 can be slidably received in the inner wall of the shield 10, so as to adjust the position of the extension cover 14 in real time according to the feed amount of the blade 9, and prevent the extension cover 14 from interfering with the cutting of the blade 9.

[0055] As Figure 6 shown, in this embodiment, the rolling support member includes: a connecting frame 28 connected to the extension cover 14; a runner 29 rotatably connected to the connecting frame 28;

[0056] Adopting the above technical solution can ensure that the extension cover 14 is in rolling contact with the surface of the pipe fitting 30. When the blade 9 feeds, the pipe fitting 30 will exert a reaction force on the runner 29, and the runner 29 cooperates with the connecting frame 28 to drive the other end part of the extension cover 14 to retract into the shield 10.

[0057] As Figure 4 and Figure 5As shown, in this embodiment, a chip removal groove 22 is provided on the outer circumference of the extension cover 14;

[0058] The above technical solution can realize the discharge of chips from the extension cover 14 through the chip discharge groove 22 .

[0059] like Figure 6 and Figure 7 As shown, in this embodiment, the blade collapse prevention structure includes: a fixing plate 23 arranged on the inner wall of the extension cover 14; a hinge seat 24 arranged on one side of the fixing plate 23; a buffer plate 25 with end shafts arranged on both sides, the end shafts are rotatably connected to the hinge seat 24, and the rotation has a damping effect; a spring 26 arranged between the buffer plate 25 and the fixing plate 23;

[0060] The above technical solution can buffer the cutting bevel. When the high-speed rotating blade 9 contacts the pipe 30, a large amount of chips with initial velocity will be generated. The chips have a certain impact potential energy. When the chips hit the buffer plate 25, the impact potential energy will be reduced. Then the chips are discharged through the chip groove 22 without causing large splashes.

[0061] like Figure 4 and Figure 5 As shown, in this embodiment, the blade collapse prevention structure further includes: a rack 17 provided on one side of the extension cover 14; a rotating shaft 19 rotatably connected to the shield 10; a gear 18 matched with the rack 17, the gear 18 is connected to one end of the rotating shaft 19; a connecting plate 20 provided at the other end of the rotating shaft 19; a torsion spring 21 connected to the shield 10 at one end, and the other end of the torsion spring 21 is connected to the connecting plate 20;

[0062] The above technical solution can ensure that the extension cover 14 can be reset when not working. When the rotating wheel 29 is separated from the pipe 30, the torsion spring 21 loses external force and is reset under the elastic action of the torsion spring 21 itself, thereby driving the connecting plate 20 to rotate. The connecting plate 20 drives the gear 18 to rotate through the rotating shaft 19. The gear 18 cooperates with the rack 17 to drive the extension cover 14 to slide and reset relative to the protective cover 10. In addition to resetting the extension cover 14, the torsion spring 21 can also apply elastic force to the extension cover 14 during the cutting process, thereby driving the rotating wheel 29 at one end of the extension cover 14 to fit the pipe 30. The rotating wheel 29 cooperates with the roller bracket structure 2 to limit the pipe 30 to prevent the pipe 30 from shaking during the cutting process.

[0063] like Figure 4 As shown, in this embodiment, a sheath 27 for covering the rotating shaft 19, the connecting plate 20 and the torsion spring 21 is provided on the outside of the shield 10;

[0064] The above technical solution can ensure that the rotating shaft 19, the connecting plate 20 and the torsion spring 21 will not be exposed to the outside, thereby preventing these structures from being accidentally damaged.

[0065] Working principle: When in use, first place the pipe fitting 30 to be cut on the roller bracket structure 2. Start the motor 8 to drive the blade 9 to rotate, and then cooperate with the hydraulic system to drive the piston rod of the oil cylinder 6 to move through the oil cylinder 6. The piston rod drives the slider 5 to slide along the chute 4 of the machine table 3, thereby driving the bracket 7 connected to the slider 5 to move synchronously. The bracket 7 drives the blade 9 to feed towards the pipe fitting 30. Since the extension cover 14 is added on the basis of the shield 10, the extension cover 14 can cooperate with the shield 10 to wrap the blade 9 in a larger range, reducing the safety risk of debris splashing caused by the blade 9 breaking. Since the extension cover 14 and the shield 10 are connected in a sliding manner, when the blade 9 feeds, the pipe fitting 30 will exert a reaction force on the runner 29. The runner 29 cooperates with the connecting frame 28 to drive the other end part of the extension cover 14 to retract into the shield 10, so that part of the extension cover 14 retracts into the shield 10, ensuring that the surface to be cut of the pipe fitting 30 is in contact with the blade 9 without obstruction. The roller bracket structure 2 rotates the pipe fitting 30 placed on its upper end to ensure that the outer circumference of the pipe fitting 30 can come into contact with the blade 9, thereby cutting the pipe fitting 30. When the high-speed rotating blade 9 comes into contact with the pipe fitting 30, a large amount of chips with initial velocity will be generated. The chips have a certain impact potential energy. When the chips hit the buffer plate 25, the impact potential energy will be reduced. Subsequently, the chips are discharged through the chip discharge groove 22 and will not cause large splashing again. During the cutting process, the torsion spring 21 can also exert an elastic force on the extension cover 14, thereby driving the runner 29 at one end of the extension cover 14 to fit with the pipe fitting 30. The runner 29 cooperates with the roller bracket structure 2 to limit the pipe fitting 30 to prevent the pipe fitting 30 from shaking during the cutting process. After cutting, the runner 29 disengages from the pipe fitting 30, and the torsion spring 21 returns to its original position under the action of its own elasticity due to the loss of external force, thereby driving the connecting plate 20 to rotate. The connecting plate 20 drives the gear 18 to rotate through the rotating shaft 19. The gear 18 cooperates with the rack 17 to drive the extension cover 14 to slide and reset relative to the shield 10.

[0066] Thus, a series of operations are completed. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0067] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. Blade anti - cracking structure of an automatic pipe cutting machine, comprising: A base and a cutting assembly provided on the base for cutting a pipe fitting (30), the cutting assembly including a blade (9) and a shield (10) covering the outside of the blade (9); A roller bracket structure (2) for clamping the pipe fitting (30) and driving its axial rotation; Characterized in that the blade anti - cracking structure further includes: An extension shield (14) with one end slidably connected to the shield (10); A rolling support member provided at one end of the extension shield (14) close to the pipe fitting (30), the rolling support member being in rolling contact with the outer surface of the pipe fitting (30), so that when the blade (9) feeds, the pipe fitting (30) exerts a reaction force on the rolling support member to drive the extension shield (14) to slide relative to the shield (10), ensuring unobstructed contact between the surface to be cut of the pipe fitting (30) and the blade (9).

2. The blade anti-breakage structure of the automatic pipe cutting machine according to claim 1, characterized in that, The base includes: A base plate (1); A machine table (3) provided with a chute (4), the machine table (3) being arranged at the upper end of the base plate (1).

3. The blade anti-breakage structure of the automatic pipe cutting machine according to claim 2, wherein, The cutting assembly further includes: A slider (5) slidably arranged in the chute (4); An oil cylinder (6) arranged at the top of the machine table (3), the piston rod of the oil cylinder (6) passing through the machine table (3) and connecting with the slider (5); A bracket (7) with one end connected to the slider (5); A motor (8) arranged on the bracket (7), the output shaft of the motor (8) being connected to the blade (9), and the bracket (7) being connected to the shield (10).

4. The blade anti-breaking structure of the automatic pipe cutting machine according to claim 3, characterized in that, On one side of the shield (10) close to the bracket (7), there is an installation plate (12), corresponding bolt holes (13) are provided in the installation plate (12) and the bracket (7), and bolts (11) are arranged in the bolt holes (13).

5. The blade anti-breakage structure of the automatic pipe cutting machine according to claim 1, characterized in that, On the side of the extension shield (14), there is a protrusion (15), and the protrusion (15) is in sliding fit with a groove (16) provided on the inner wall of the shield (10).

6. The blade anti-breakage structure of the automatic pipe cutting machine according to claim 5, characterized in that, The rolling support member includes: A connecting frame (28) connected to the extension shield (14); A runner (29) rotatably connected to the connecting frame (28).

7. The blade anti-breaking structure of the automatic pipe cutting machine according to claim 6, characterized in that, A chip - discharging groove (22) is provided on the outer circumference of the extension shield (14).

8. The blade anti-collapse structure of the automatic pipe cutting machine according to claim 7, characterized in that, The blade anti - cracking structure includes: A fixing plate (23) arranged on the inner wall of the extension shield (14); A hinge seat (24) arranged on one side of the fixing plate (23); A buffer plate (25) provided with end shafts on both sides, the end shafts being rotatably connected to the hinge seat (24); A spring (26) arranged between the buffer plate (25) and the fixing plate (23).

9. The blade anti-breakage structure of the automatic pipe cutting machine according to claim 8, characterized in that, The blade anti - cracking structure further includes: A rack (17) arranged on one side of the extension shield (14); A rotating shaft (19) rotatably connected to the shield (10); A gear (18) engaged with the rack (17), the gear (18) being connected to one end of the rotating shaft (19); A connecting plate (20) arranged at the other end of the rotating shaft (19); A torsion spring (21) with one end connected to the shield (10), and the other end of the torsion spring (21) being connected to the connecting plate (20).

10. The blade anti-breakage structure of the automatic pipe cutting machine according to claim 9, characterized in that, A sheath (27) for covering the rotating shaft (19), the connecting plate (20) and the torsion spring (21) is arranged on the outside of the shield (10).

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