A header material beveling and bending forming apparatus

Abstract

This utility model discloses a forming equipment for pipe beveling and bending, including a frame and a pipe cutting device and a bending device on the frame. The pipe cutting device has a pipe cutting station for receiving the pipe to be cut. The pipe cutting device is used to cut the pipe located at the pipe cutting station and form a bevel on the pipe. The plane of the bevel intersects with the plane of any cross-section of the pipe. The bending device has a bending station for receiving the pipe and bending the pipe toward the side facing the bevel, so that there is a stretch allowance on the outer side of the pipe bend. This improves the situation where the pipe end face is not round or beveled due to the stretching of the outer side during bending, reduces the local gap between the bent pipe and the end face of the pipe, ensures welding quality, helps to ensure weld quality, improves the airtightness and reliability of air conditioning pipelines, and facilitates continuous bending and production of pipes.

Description

Technical Field

[0001] This application relates to the basic non-cutting processing or treatment of metal plates, tubes, bars or profiles; in the field of stamping metal technology, it specifically relates to a forming equipment that integrates pipe beveling and bending. Background Technology

[0002] During the production of air conditioning pipes, the stress on the outer and inner sides of the bend differs during bending. The outer side is stretched while the inner side is compressed, resulting in a non-circular or beveled end face of the bend. Direct welding of this non-circular or beveled end face to the pipe end face will create a local gap. This gap affects the welding quality and the airtightness of the air conditioning system, leading to low weld strength and even refrigerant or coolant leakage. Furthermore, when the pipe is subjected to pressure, vibration, or thermal expansion and contraction over a long period, weak areas of the weld may crack prematurely, shortening the pipe's service life. Summary of the Invention

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a forming device that integrates pipe beveling and bending, and the technical solution adopted includes:

[0004] A forming device for pipe beveling and bending includes a frame and a pipe cutting device and a bending device on the frame. The pipe cutting device has a pipe cutting station for receiving the pipe to be cut. The pipe cutting device is used to cut the pipe located at the pipe cutting station and form a bevel on the pipe. The plane of the bevel intersects with the plane of any cross-section of the pipe. The bending device has a bending station for receiving the pipe and bending the pipe toward the side facing the bevel.

[0005] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: the included angle between the oblique surface S1 and the cross section S2 is α, where α≥2°.

[0006] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: 2°≤α≤15°.

[0007] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: the bending station is used to receive one end of the pipe with a beveled surface.

[0008] The technical solution adopted by one embodiment of this utility model to solve its technical problem is as follows: the pipe cutting device includes a cutting mechanism and a cutting blade mounted on the frame. The cutting blade is mounted on the cutting mechanism, and the cutting mechanism is used to drive the cutting blade to move towards the pipe cutting station to cut the pipe.

[0009] The technical solution adopted by one embodiment of this utility model to solve its technical problem is as follows: the cutter is mounted on the frame through the cutter head fixing seat and can move on the cutter head fixing seat to approach or move away from the pipe cutting station; the feed mechanism is mounted on the frame and connected to the cutter; the feed mechanism is used to drive the cutter to move toward the pipe cutting station.

[0010] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: it further includes a rotary cutter mechanism installed on the frame, the cutter head fixing seat is installed on the rotary cutter mechanism, and the rotary cutter mechanism is used to drive the cutter head fixing seat to rotate around the pipe cutting station.

[0011] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: the pipe cutting station is set on the cutter head fixing seat.

[0012] The technical solution adopted by one embodiment of this utility model to solve its technical problem is as follows: the bending device includes a flipping drive mechanism, a clamping die, a bending die, a guide die, and a mandrel assembly mounted on a frame.

[0013] The clamping mold is mounted on the frame in a lifting and lowering manner via a lifting mechanism. The guide mold is located on the side of the clamping mold away from the pipe cutting device. The bending mold is located above the clamping mold. The mandrel assembly is located on the side of the guide mold opposite to the clamping mold. The mandrel of the mandrel assembly can extend into the guide groove of the guide mold or retract.

[0014] The flipping drive mechanism is used to flip the clamping mold and bending mold relative to the template and mandrel assembly.

[0015] The beneficial effects of this utility model are:

[0016] The forming equipment for pipe beveling and bending uses the pipe cutting device to cut the pipe into a beveled surface. The beveled end of the pipe is then directly fed to the bending device and accurately bent in a specific direction. This ensures that there is a stretch allowance on the outer side of the pipe after bending. This stretch allowance helps to prevent the pipe end face from becoming non-circular or beveled due to stretching on the outer side during bending. It also helps to reduce the local gap between the bend and the end face of the pipe, ensuring welding quality, improving the airtightness and reliability of the air conditioning pipeline, and facilitating continuous bending and production of the pipe. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the forming equipment for oblique cutting and bending of the pipes.

[0019] Figure 2 This is a cross-sectional view of the forming equipment for oblique cutting and bending of the pipes;

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 A schematic diagram of a pipe cutting device cutting pipes;

[0022] Figure 5 A cross-section of the pipe cutting device Figure 1 ;

[0023] Figure 6 A cross-section of the pipe cutting device Figure 2 ;

[0024] Figure 7 for Figure 2 Enlarged view of section B in the middle. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0029] Reference Figure 1-7 This application proposes an embodiment of a forming equipment for pipe beveling and bending, comprising a frame 10 and a pipe cutting device 20 and a bending device 30 on the frame 10. The pipe cutting device 20 has a pipe cutting station 241 for receiving the pipe to be cut. The pipe cutting device 20 is used to cut the pipe located at the pipe cutting station 241 and form a beveled surface S1 on the pipe. The plane containing the beveled surface S1 intersects the plane containing any cross-section S2 of the pipe. The bending device 30 has a bending station for receiving the pipe and bending the pipe toward the side facing the beveled surface S1.

[0030] In this application, the meaning of the cross section S2 of the pipe is: a section perpendicular to the axis of the pipe, wherein the plane containing the oblique cutting surface S1 intersects the plane containing any cross section S2 of the pipe, that is, the oblique cutting surface does not coincide with the cross section S2 of the pipe.

[0031] Referring to the attached diagram, the pipe is bent towards the side where the plane containing the oblique cut surface S1 intersects with the plane containing the pipe cross-section S2 to form a bend. This allows for a stretching allowance on the outer side of the bend. When the end of the pipe with the oblique cut surface S1 is bent inwards, the stretching allowance on the outer side of the pipe can improve the situation where the pipe end face is not perfectly round or oblique due to the stretching on the outer side during bending. This helps to reduce the local gap between the bend and the end face of the pipe, ensures welding quality, and improves the airtightness and reliability of the air conditioning pipeline.

[0032] Since the pipe with the beveled surface S1 needs to be bent in a specific direction, the forming equipment for pipe beveling and bending will use the pipe cutting device to cut the pipe with the beveled surface, and then the end of the pipe with the beveled surface can be directly transported to the bending device and accurately bent in a specific direction, which facilitates continuous bending and production of pipes.

[0033] In this embodiment, in order to make the oblique cut surface S1 form an angle with the cross section S2 of the pipe, the cutter 22 can form an angle with the cross section S2 of the pipe. This application does not specifically limit the orientation of the cutter 22 and the pipe, as long as the cutter 22 forms an angle with the cross section S2 of the pipe.

[0034] In this application, the cutting mechanism 22 cuts one end of the pipe to form the oblique cut surface S1, and then the pipe end with the oblique cut surface S1 is bent by a bending machine. In another embodiment, the cutting mechanism 22 can also be used to cut both ends of the pipe to form the oblique cut surface S1 respectively, and then the two ends of the pipe can be bent by a bending device.

[0035] The included angle between the oblique cut surface S1 and the cross section S2 is α, where α ≥ 2°, preferably 2° ≤ α ≤ 15°, to reserve sufficient stretching allowance for the outer side of the pipe bend.

[0036] Preferably, in step 2, the angle of the material break bending is ≥90°. When the angle of the material break bending is ≥90°, there is a significant difference in the stress state on the outer and inner sides of the pipe bend, causing the end face of the bend to deform and appear non-circular or inclined.

[0037] In this embodiment, the feed mechanism 21 is used to drive the cutter 22 to move and cut the pipe at the pipe cutting station 241.

[0038] In one embodiment, the feeding mechanism 21 is a robotic arm, and the cutter 22 is mounted on the end of the robotic arm;

[0039] In this embodiment, the cutter 22 is mounted on the frame 10 via the cutter head fixing seat 24 and can move on the cutter head fixing seat 24 to approach or move away from the pipe cutting station 241. The feed mechanism 21 is mounted on the frame 10 and connected to the cutter. The feed mechanism 21 is used to drive the cutter 22 to move toward the pipe cutting station 241 to cut the pipe passing through the pipe cutting station 241.

[0040] This embodiment does not specifically limit the structure of the feed mechanism 21, as long as the feed mechanism 21 can drive the cutter to move toward the pipe and cut to form the oblique surface S1.

[0041] In this embodiment, the feed mechanism 21 includes a feed sleeve 211 and a pusher assembly 212. A feed groove 242 is provided on the outer side of the cutter head fixing seat 24. A cutter bar slider 243 is provided within the feed groove 242, and the cutter bar slider 243 is connected to the cutter head fixing seat 24 via a compression spring 244. The cutter bar slider 243 extends out of the feed groove 242, and one end of the slider extends out of the feed groove 242 with a slope 245. The slope 245 gradually slopes from one side near the cutter 22 to the other side. Inclined towards the pipe cutting station 241, the cutter 22 is mounted on the cutter bar slider 243, the feed sleeve 211 is mounted on the cutter head fixing seat 24 and can move relative to the cutter head fixing seat 24 along the axial direction of the pipe, the pusher assembly 212 is pulsatorically connected to the feed sleeve 211, and is used to drive the feed sleeve 211 to move along the axial direction of the pipe cutting station 241 so as to push the cutter bar slider 243 in the feed groove 242 towards the pipe cutting station 241 via the inclined surface 245.

[0042] The pusher assembly 212 drives the feed sleeve 211 to move axially along the pipe until the feed sleeve 211 pushes the cutter slider 243 through the inclined surface 245 to compress the compression spring 244 and drive the cutter 22 to move circumferentially closer to the pipe cutting station 241; after the pipe is cut, the pusher assembly 212 drives the feed sleeve 211 away from the inclined surface 245, and the cutter slider 243 returns to its original position under the action of the compression spring 244.

[0043] Preferably, the inner wall of the feed sleeve 211 near the tool holder slider 243 is configured as an inclined surface 245 that matches the inclined surface 245, so that the feed sleeve 211 interacts with the inclined surface 245 through the inclined surface 245.

[0044] Preferably, the machine also includes a rotary blade mechanism 23 mounted on the frame, with the blade holder 24 mounted on the rotary blade mechanism 23. The rotary blade mechanism 23 drives the blade holder 24 to rotate around the pipe cutting station 241, so that the cutter rotates around the pipe to cut.

[0045] When cutting the pipe, the rotary blade mechanism 23 drives the cutter head fixing seat 24 to rotate the cutter synchronously. Simultaneously, the feed mechanism 21 drives the cutter 22 to move closer to the pipe cutting station 241, thereby cutting the pipe through the rotation and feed motion of the cutter. The rotary blade mechanism 23 is a shaft coaxially connected to the cutter head fixing seat 24. Gears are mounted on the shaft, and a drive motor drives the shaft to rotate synchronously with the cutter head fixing seat 24 via a toothed belt.

[0046] In this embodiment, the pipe cutting station 241 is disposed on the cutter head fixing seat 24.

[0047] The cutter 22 is a circular cutter, which is rotatably mounted on the cutter head fixing seat 24 via a cutter shaft, so that the cutter can cut the pipe more smoothly.

[0048] Based on the above, the pusher assembly 212 includes a telescopic member 2121 and a pusher wheel 2122. The telescopic member 2121 is mounted on the frame 10, and the telescopic direction of the telescopic member 2121 is distributed along the axial direction of the pipe cutting station 241. The outer wall of the feed sleeve 211 is provided with an annular groove 2111. The pusher wheel 2122 is mounted on the telescopic end of the telescopic member 2121 and extends into the annular groove 2111.

[0049] Since the feed sleeve 211 rotates with the cutter head fixing seat 24 around the pipe cutting station 241, by moving the push wheel 2122 in the annular groove 2111, the telescopic end of the telescopic member 2121 can push the feed sleeve 211 to move axially along the pipe cutting station 241 through the annular groove 2111 when it is telescopic.

[0050] Preferably, the push wheel 2122 is rotatably mounted on the telescopic end of the telescopic member 2121. When the push wheel 2122 pushes the feed sleeve 211 to move through the annular groove 2111, the push wheel 2122 can rotate relative to the telescopic end of the telescopic member 2121 under the action of the feed sleeve 211, so that the movement of the push wheel 2122 and the feed sleeve 211 is smoother.

[0051] Referring to the accompanying drawings, the rotary cutter mechanism 23 includes a drive assembly 231 and a bushing 232 rotatably mounted on the frame 10. The cutter head fixing seat 24 is mounted on the bushing 232, and the feed sleeve 211 is mounted on the bushing 232 and slidably connected to the bushing 232. The drive assembly 231 is connected to the bushing 232 in a transmission manner. The drive assembly 231 drives the feed sleeve 211, the cutter head fixing seat 24, and the cutter 22 to rotate synchronously around the pipe cutting station 241 through the bushing 232.

[0052] In this embodiment, the bending device 30 includes a flipping drive mechanism 31, a clamping die 32, a bending die 33, a guide die 34, and a mandrel assembly 35 mounted on the frame 10.

[0053] The clamping mold 32 is mounted on the frame 10 in a height-adjustable manner via the lifting mechanism 36. The guide mold 34 is located on the side of the clamping mold 32 away from the pipe cutting device 20. The bending mold 33 is located above the clamping mold 32. The mandrel assembly 35 is located on the side of the guide mold 34 away from the clamping mold 32. The mandrel 351 of the mandrel assembly 35 can extend into the guide groove 341 of the guide mold 34 or retract.

[0054] The flipping drive mechanism 31 is used to flip the clamping mold 32 and bending mold 33 relative to the template 34 and the mandrel assembly 35.

[0055] Specifically, the clamping mold 32 has a clamping groove 321 at its upper end for the pipe to be positioned, the guide mold 34 has a guide groove 341 at its upper end that communicates with the clamping groove 321, and the bending mold 33 has a bending forming groove 331 corresponding to the clamping groove 321. The clamping groove 321 and the bending forming groove 331 together form the bending station. The flipping drive mechanism 31 is used to drive the clamping mold 32 and the bending mold 33 to flip relative to the guide mold 34; or the guide groove 341 constitutes the bending station. The flipping drive mechanism 31 is connected to the guide mold 34 and the mandrel assembly 35 in a transmission connection. The flipping drive mechanism 31 is used to drive the guide mold 34 and the mandrel assembly 35 to flip relative to the clamping mold 32 and the bending mold 33.

[0056] In this embodiment, the flipping drive mechanism 31 is connected to the template 34 and the mandrel assembly 35, and the flipping drive mechanism 31 is used to drive the template 34 and the mandrel assembly 35 to flip relative to the clamping mold 32.

[0057] After the pipe has been processed with a beveled surface, it is continuously fed into the pipe cutting station 241 so that one end of the processed pipe with a beveled surface extends into the groove 341. The mandrel 251 of the mandrel assembly 35 extends and inserts into one end of the pipe in the groove 341. The lifting mechanism 36 drives the clamping mold 32 to rise and clamp the other end of the pipe with the bending mold 33. The flipping drive mechanism 31 drives the clamping mold 34 and the mandrel assembly 35 to flip relative to the clamping mold 32 and the bending mold 33 to bend the beveled end of the pipe. After bending is completed, the mandrel 351 retracts from the groove 341, and the lifting mechanism 36 then drives the clamping mold 32 to descend and release the pipe, and the bent pipe is taken out.

[0058] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A forming device integrating pipe beveling and bending, characterized in that, The device includes a frame (10) and a pipe cutting device (20) and a bending device (30) on the frame (10). The pipe cutting device (20) has a pipe cutting station (241) for receiving pipes to be cut. The pipe cutting device (20) is used to cut the pipes located at the pipe cutting station (241) and form a bevel (S1) on the pipes. The plane of the bevel (S1) intersects with the plane of any cross section (S2) of the pipe. The bending device (30) has a bending station for receiving the pipes and bending the pipes toward the side toward which the bevel (S1) is facing.

2. The forming equipment for oblique cutting and bending of pipes according to claim 1, characterized in that, The angle between the oblique cut surface S1 and the cross section S2 is α, where α ≥ 2°.

3. The forming equipment for oblique cutting and bending of pipes according to claim 2, characterized in that, 2°≤α≤15°。 4. The forming equipment for oblique cutting and bending of pipes according to claim 1, characterized in that, The bending station is used to receive one end of the pipe with a beveled surface (S1).

5. The forming equipment for oblique cutting and bending of pipes according to any one of claims 1-4, characterized in that, The pipe cutting device (20) includes a feed mechanism (21) and a cutter (22) mounted on a frame (10). The cutter (22) is mounted on the feed mechanism (21), which drives the cutter (22) to feed toward the pipe cutting station (241) to cut the pipe.

6. The forming equipment for oblique cutting and bending of pipes according to claim 5, characterized in that, The cutter (22) is mounted on the frame (10) via the cutter head fixing seat (24) and can move on the cutter head fixing seat (24) to approach or move away from the pipe cutting station (241). The feed mechanism (21) is mounted on the frame (10) and connected to the cutter. The feed mechanism (21) is used to drive the cutter (22) to move toward the pipe cutting station (241).

7. The forming equipment for oblique cutting and bending of pipes according to claim 6, characterized in that, It also includes a rotary cutter mechanism (23) mounted on the frame, wherein the cutter head fixing seat (24) is mounted on the rotary cutter mechanism (23), and the rotary cutter mechanism (23) is used to drive the cutter head fixing seat (24) to rotate around the pipe cutting station (241).

8. The forming equipment for oblique cutting and bending of pipes according to claim 6 or 7, characterized in that, The tube cutting station (241) is located on the cutter head fixing seat (24).

9. The forming equipment for oblique cutting and bending of pipes according to claim 1, characterized in that, The bending device (30) includes a flipping drive mechanism (31), a clamping die (32), a bending die (33), a template (34), and a mandrel assembly (35) mounted on a frame (10). The clamping mold (32) is mounted on the frame (10) in a height-reducible manner via a lifting mechanism (36). The guide mold (34) is located on the side of the clamping mold (32) away from the pipe cutting device (20). The bending mold (33) is located above the clamping mold (32). The mandrel assembly (35) is located on the side of the guide mold (34) away from the clamping mold (32). The mandrel (351) of the mandrel assembly (35) can extend into the guide groove (341) of the guide mold (34) or retract. The flipping drive mechanism (31) is used to flip the clamping mold (32) and bending mold (33) relative to the template (34) and mandrel assembly (35).

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