Automatic welding slag cleaning system for surface of metal composite pipe fitting

Abstract

The invention discloses an automatic welding slag cleaning system for the surface of a metal composite pipe fitting, and relates to the technical field of welding, the automatic welding slag cleaning system comprises a workbench, a first sliding seat and a second sliding seat are slidably mounted on the workbench, a first tool apron is fixedly mounted on the first sliding seat, a second tool apron is slidably mounted on the second sliding seat, a first tool bit is mounted on the first tool apron, and a second tool bit is mounted on the second tool apron; a second tool bit is mounted on the second tool apron; a horizontal groove is formed in the side face, facing the second tool bit, of the first tool bit, a sliding block attached to the horizontal groove is slidably installed in the horizontal groove, an elastic piece is connected between the horizontal groove and the sliding block, and the sliding block has a first state protruding out of the first tool bit, a second state flush with the first tool bit and a third state retracting into the horizontal groove. In the single machining process, an operator can take the next composite pipe and make preparation in the welding slag removing process, the next composite pipe can be pressed on the first tool bit at the first time after discharging is completed, and the time needed by single machining is shortened.

Description

Technical Field

[0001] This invention relates to the field of welding technology, specifically to an automatic slag cleaning system for the surface of metal composite pipe fittings. Background Technology

[0002] In industrial applications, to reduce manufacturing costs while ensuring the performance of metal pipe fittings, different materials are often used for butt welding to obtain complete pipe fittings with aligned axes. For example, in the manufacturing of air conditioning condensate pipes, higher-cost copper pipes are used only in specific locations, while lower-cost aluminum pipes are used in other locations. During processing, the copper and aluminum pipes are welded together at their ends using methods such as resistance welding. After welding, annular weld slag will remain on the outer surface of the composite pipe fitting, requiring cleaning.

[0003] Traditional manual cleaning involves an operator holding the composite tube in one hand or pressing it firmly onto a workbench, then using a hard cleaning tool to gradually remove the welding slag circumferentially. This method is prone to incomplete slag removal or damage to the composite tube surface due to improper force. To ensure the surface quality of the composite tube, manufacturers typically equip their systems with automatic welding slag removal devices. These devices use an external power source to drive a cutting head axially to remove the annular welding slag area on the composite tube in one pass. Cutting heads are generally divided into one-piece annular cutting heads and separate arc-shaped cutting heads. Separate cutting heads are widely used due to their ease of operation and maintenance. In actual processing, the operator first takes the composite tube from the preparation area, presses it firmly onto the cutting head or a limiting component, and then waits for the cutting head to move axially to remove the welding slag. After the cutting head separates from the composite tube, the welding slag ring on the composite tube is removed, and finally, the composite tube is placed in the finished product area. The above process is then repeated for the next composite tube. In the aforementioned process, both material handling and feeding are done manually by the operator, and the removal of welding slag by the cutter head also requires the operator to hold the composite tube steadily. This results in a long idle time for the cutter head, which severely impacts processing speed during mass production. While using dual robotic arms for alternating clamping and feeding could theoretically increase speed, the design, manufacturing, and maintenance costs are high, and the length of the composite tube necessitates significant space requirements, making it impractical. Therefore, improving existing welding slag removal equipment to reduce the time required for removing welding slag from a single composite tube is a problem that those skilled in the art need to solve. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic slag cleaning system for the surface of metal composite pipes, so as to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic slag cleaning system for the surface of metal composite pipe fittings, comprising a worktable, on which a first slide block and a second slide block are slidably mounted, a first cutter holder is fixedly mounted on the first slide block, and a second cutter holder is slidably mounted on the second slide block, a first cutter head is mounted on the first cutter holder, and a second cutter head is mounted on the second cutter holder; the sides of the first cutter head and the second cutter head opposite to each other are adapted to the outer surface of the composite pipe fitting; a horizontal groove is formed on the side of the first cutter head facing the second cutter head, and a slider that is slidably mounted in the horizontal groove and fits against it, and the two are connected by an elastic element, the slider having a first state protruding from the first cutter head, a second state flush with the first cutter head, and a third state retracted into the horizontal groove.

[0006] As a preferred embodiment of the present invention, a wedge block is mounted on the slider via a connecting plate, and a lifting plate located above the wedge block is slidably mounted on the first cutter head along the vertical direction.

[0007] As a preferred embodiment of the present invention, a horizontal rigid arm is fixedly installed on the second cutter head at the position corresponding to the lifting plate, and the bottom surface of the rigid arm includes a first inclined portion, a horizontal portion and a second inclined portion.

[0008] As a preferred embodiment of the present invention, a first roller that fits against the rigid arm is rotatably mounted on the top of the lifting plate, and a second roller that fits against the inclined surface of the wedge block is rotatably mounted on the bottom of the lifting plate.

[0009] As a preferred embodiment of the present invention, the workbench is equipped with a stop for axially limiting the composite pipe fitting.

[0010] As a preferred embodiment of the present invention, the workbench is provided with a through groove that allows composite pipes to pass through, and a receiving bin is installed at the bottom of the workbench corresponding to the position of the through groove.

[0011] As a preferred embodiment of the present invention, a first bracket is fixedly installed on the workbench, and a first cutter located above the through groove is fixedly installed on the first bracket.

[0012] As a preferred embodiment of the present invention, a second bracket is slidably mounted on the worktable, and a second cutter located below the first cutter is fixedly mounted on the second bracket. A telescopic spring is connected between the second bracket and the worktable.

[0013] As a preferred embodiment of the present invention, a push plate for pushing the second support is fixedly installed on the second cutter head.

[0014] As a preferred embodiment of the present invention, a square groove is provided on the side wall of the receiving bin at a position below the second cutting blade, and an inclined plate corresponding to the position of the square groove is fixedly installed at the bottom of the second bracket through a connecting arm; the inclined plate has a first state located inside the receiving bin and a second state located outside the receiving bin.

[0015] In the above technical solution, the automatic slag removal system for the surface of metal composite pipes provided by this invention allows the operator to press a single composite pipe horizontally against the first cutter head during operation. Once the second cutter holder and the second cutter head move towards the first cutter head, the operator can release the pressure. The pressure difference between the inside and outside of the horizontal groove causes the composite pipe to adhere to the first cutter head. After the slag removal is completed, as the second cutter holder and the second cutter head move away from the first cutter head, the slider automatically pushes the composite pipe away from the first cutter head, completing the unloading step. In summary, this invention improves upon existing slag removal equipment. During a single processing cycle, the operator only needs to press the composite pipe against the first cutter head and then release the pressure. The operator does not need to contact the composite pipe during slag removal and unloading. This allows the operator to pick up the next composite pipe and prepare it during the slag removal process, and immediately press the next composite pipe against the first cutter head after unloading, significantly reducing the time required for a single processing cycle. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 A first perspective view of an automatic slag cleaning system for the surface of metal composite pipe fittings;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a three-dimensional schematic diagram of the slider in its first state.

[0020] Figure 4 This is a three-dimensional schematic diagram of the second state of the slider;

[0021] Figure 5 This is a 3D schematic diagram of the slider in its third state.

[0022] Figure 6 This is a three-dimensional structural diagram of a rigid arm;

[0023] Figure 7 This is a schematic diagram showing the interaction of the slider, wedge block, and lifting plate.

[0024] Figure 8 This is a three-dimensional schematic diagram showing the first and second cutting heads in contact with each other.

[0025] Figure 9 This is a second perspective view of an automatic slag cleaning system for the surface of metal composite pipe fittings;

[0026] Figure 10 for Figure 9 Enlarged diagram of point B in the middle.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Workbench; 101. Through slot; 2. First slide; 3. Second slide; 4. First cutter holder; 5. Second cutter holder; 6. First cutter head; 601. Horizontal slot; 7. Second cutter head; 8. Slider; 9. Wedge block; 10. Lifting plate; 11. Rigid arm; 1101. First inclined part; 1102. Horizontal part; 1103. Second inclined part; 12. First roller; 13. Second roller; 14. Stop block; 15. Receiving bin; 16. First support; 17. First cutter; 18. Second support; 19. Second cutter; 20. Telescopic spring; 21. Push plate; 22. Inclined plate. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, this embodiment provides an automatic slag cleaning system for the surface of metal composite pipe fittings, including a worktable 1. A first slide block 2 and a second slide block 3 are slidably mounted on the worktable. The first slide block 2 and the second slide block 3 are controlled by a cylinder mounted on the worktable 1, and their sliding paths are parallel and move synchronously. A first tool holder 4 is fixedly mounted on the first slide block 2, and a second tool holder 5 is slidably mounted on the second slide block 3. The sliding path of the second tool holder 5 relative to the second slide block 3 is perpendicular to the sliding path of the second slide block 3 relative to the worktable 1. A first cutter head 6 is mounted on the first tool holder 4, and a second cutter head 7 is mounted on the second tool holder 5. The opposing sides of the first cutter head 6 and the second cutter head 7 are adapted to the outer surface of the composite pipe fitting. When the first cutter head 6 and the second cutter head 7 are in contact, they together form an annular area that is in contact with the outer surface of the composite pipe fitting. When the first cutter head 6 and the second cutter head 7 move axially relative to the composite pipe fitting, they will remove the annular weld slag area on the composite pipe fitting. The removed annular weld slag can move axially relative to the composite pipe fitting under the push of the first cutter head 6 and the second cutter head 7. A horizontal groove 601 is opened on the side of the first cutter head 6 facing the second cutter head 7. A slider 8 is slidably installed in the horizontal groove 601 and is in contact with it, and an elastic element connects the two. The slider 8 has a first state of protruding from the first cutter head 6, a second state of being flush with the first cutter head 6, and a third state of being retracted into the horizontal groove 601. A stop block 14 for axially limiting the composite pipe fitting is installed on the worktable 1.

[0031] In operation, initially, the first cutter head 6 and the second cutter head 7 are separated, with a gap between them larger than the diameter of the composite tube. The slider 8 is in the second state. The operator presses the prepared composite tube horizontally onto the first cutter head 6 and presses one end of the composite tube against the stop block 14. As the cylinder drives the second cutter head 5 and the second cutter head 7 closer to the first cutter head 6, the slider 8 transitions from the second state to the third state, that is, the slider 8 slides a short distance into the horizontal groove 601, and the elastic element between the horizontal groove 601 and the slider 8 is compressed. The air pressure in the area between the slider 8 and the outer wall of the composite tube in the horizontal groove 601 decreases, and the composite tube is attracted to the first cutter head 6. The operator can then release the composite tube and take the next composite tube from the preparation area to prepare. After the second cutter head 5 and the second cutter head 7 move a predetermined distance toward the first cutter head 6, the slider 8 returns from the third state to the second state. The composite tube is no longer adsorbed onto the first cutter head 6, but tends to detach from it. However, since the distance between the first cutter head 6 and the second cutter head 7 no longer allows the composite tube to fall downwards, even if the composite tube separates from the first cutter head 6, it will fall between the first cutter head 6 and the second cutter head 7. As the second cutter head 7 continues to approach the first cutter head 6, it will push the composite tube back to a position where it is in contact with the first cutter head 6. Finally, the first cutter head 6 and the second cutter head 7 press the composite tube tightly. After the first cutter head 6 and the second cutter head 7 press the composite tube tightly, the first slide 2 and the second slide 3 move synchronously under the action of the cylinder, driving the first cutter head 6 and the second cutter head 7 to move axially along the composite tube. Since one end of the composite tube is pressed against the stop block 14, it can only remain stationary. The first cutter head 6 and the second cutter head 7 remove the annular welding slag on it. Figure 8 As shown. Subsequently, under the action of the cylinder, the second cutter holder 5 and the second cutter head 7 translate relative to the second slide 3 and move away from the first cutter head 6. After translating and resetting relative to the second slide 3, the second cutter holder 5 and the second cutter head 7 continue to move a certain distance. The slider 8 then enters the first state from the second state, that is, the slider 8 protrudes from the first cutter head 6. The slider 8 pushes the composite tube that is in contact with the first cutter head 6, causing the composite tube to quickly separate from the first cutter head 6 and fall. Finally, the first slide 2 and the second slide 3 are synchronously translated and reset under the action of the cylinder. The second cutter holder 5 and the second cutter head 7 also translate relative to the second slide 3 and return to their initial positions under the action of the cylinder. The slider 8 returns from the first state to the initial second state. The operator can then quickly press the prepared next composite tube onto the first cutter head 6.

[0032] like Figure 1 , Figure 6 and Figure 7As shown, a wedge-shaped block 9 is mounted on the slider 8 via a connecting plate within a horizontal groove 601. A lifting plate 10 is slidably mounted on the first cutter head 6 above the wedge-shaped block 9. A horizontal rigid arm 11 is fixedly mounted on the second cutter head 7 corresponding to the position of the lifting plate 10. The bottom surface of the rigid arm 11 includes a first inclined portion 1101, a horizontal portion 1102, and a second inclined portion 1103. A first roller 12, which is in contact with the rigid arm 11, is rotatably mounted on the top of the lifting plate 10, and a second roller 13, which is in contact with the inclined surface of the wedge-shaped block 9, is rotatably mounted on the bottom of the lifting plate 10.

[0033] In the initial state, the first inclined portion 1101 is in contact with the first roller 12, and the elastic element between the horizontal groove 601 and the slider 8 is in a slightly compressed state. As the second cutter head 7 approaches the first cutter head 6, the rigid arm 11 first pushes the lifting plate 10, the first roller 12, and the second roller 13 downward. The second roller 13, through the force between itself and the wedge block 9, pushes the slider 8 into the horizontal groove 601, and the slider 8 moves from the initial second state to the third state, further compressing the elastic element between the horizontal groove 601 and the slider 8. As the second cutter head 7 continues to approach the first cutter head 6, the horizontal portion 1102 contacts the first roller 12, and the slider 8 remains stationary relative to the horizontal groove 601. As the second cutter head 7 continues to approach the first cutter head 6, the second inclined portion 1103 contacts the first roller 12, and the elastic element between the horizontal groove 601 and the slider 8 gradually returns to its initial state. Under the action of the elastic element, the slider 8 gradually returns to its initial second state. After the second cutter head 7 and the first cutter head 6 are in contact, the slider 8 remains in the second state. After the second cutter head 7 removes the welding slag from the first cutter head 6, as the second cutter head 7 moves away from the first cutter head 6, the first roller 12 sequentially contacts the second inclined portion 1103, the horizontal portion 1102, and the first inclined portion 1101, and finally separates from the rigid arm 11. The elastic element between the horizontal groove 601 and the slider 8 returns to its original state under its own rebound force, pushing the slider 8 to move a small distance outside the horizontal groove 601. The slider 8 enters the first state and pushes the composite tube that is in contact with the first cutter head 6 to separate from the first cutter head 6. Finally, after the first slide 2 and the second slide 3 are reset under the action of the cylinder, the second cutter head 7 also moves and resets relative to the second slide 3. The first inclined portion 1101 on the rigid arm 11 re-contacts the first roller 12, the lifting plate 10 descends a small distance to return to its initial height, and the slider 8 returns to its initial second state.

[0034] like Figure 1 and Figure 2As shown, the workbench 1 has a through groove 101 that allows composite pipes to pass through. A receiving bin 15 is installed at the bottom of the workbench 1 corresponding to the position of the through groove 101. The receiving bin 15 includes a vertical part, an arc-shaped part, and a horizontal part from top to bottom. After the second cutter head 7 and the first cutter head 6 work together to remove the welding slag on the composite pipe, the second cutter head 7 moves relative to the first cutter head 6 and separates from the first cutter head 6. The composite pipe falls off the first cutter head 6 and falls into the through groove 101 and finally into the receiving bin 15.

[0035] like Figure 2 and Figure 10 As shown, a first bracket 16 is fixedly installed on the workbench 1, and a first cutter 17 located above the through groove 101 is fixedly installed on the first bracket 16. A second bracket 18 is horizontally slidably installed on the workbench 1 along a direction perpendicular to the composite pipe, and a second cutter 19 located below the first cutter 17 is fixedly installed on the second bracket 18. A telescopic spring 20 connects the second bracket 18 and the workbench 1. Both the first cutter 17 and the second cutter 19 are horizontal and parallel to each other. A push plate 21 for pushing the second bracket 18 is fixedly installed on the second cutter head 7.

[0036] In the initial state, when the operator presses the composite tube horizontally against the first cutter head 6, the first cutter 17 is positioned at the top of the composite tube and is in contact with it, while the second cutter 19 is positioned at the bottom of the composite tube and is in contact with it. The combined support of the first cutter 17, the second cutter 19, and the first cutter head 6 keeps the composite tube stable, allowing the operator to release it earlier. After the second cutter head 7 and the first cutter head 6 remove the welding slag from the composite tube, the annular welding slag loops onto the composite tube and continues to move axially along the composite tube under the push of the second cutter head 7 and the first cutter head 6 until it collides with the cutter heads of the first cutter 17 and the second cutter head 19. Since the first cutter 17 and the second cutter head 19 cut the top and bottom of the annular welding slag respectively, at the moment of cutting, a horizontal force perpendicular to the axial direction of the composite tube is applied to the two semi-circular welding slag, thereby promoting the two cut welding slags to detach from the composite tube and fall freely. When the second cutter head 7 and the first cutter head 6 push the annular welding slag to the position where it collides with the first cutter 17 and the second cutter 19, the push plate 21 on the second cutter head 7 is in contact with the second support 18. During the separation of the second cutter head 7 from the first cutter head 6, the push plate 21 moves horizontally synchronously with the second cutter head 7, pushing the second support 18 and the second cutter 19 to move, and the telescopic spring 20 is compressed. Until the second cutter 19 moves to the outside of the corresponding vertical area of ​​the through groove 101, thereby releasing the obstruction of the composite tube by the second cutter 19, the composite tube can fall smoothly into the through groove 101. As the second cutter head 7 moves further away from the first cutter head 6, the telescopic spring 20 is further compressed until the second slide 3 drives the second cutter head 7 to reset in the horizontal direction, so that the push plate 21 separates from the second support 18, and the second support 18 and the second cutter 19 can reset during the restoration of the telescopic spring 20, preparing for the next composite tube processing.

[0037] like Figure 9 and Figure 10As shown, a square groove is formed on the side wall of the receiving bin 15 below the blade of the second cutter 19. An inclined plate 22, corresponding to the position of the square groove, is fixedly installed at the bottom of the second support 18 via a connecting arm. The inclined plate 22 has a first state located inside the receiving bin 15 and a second state located outside the receiving bin 15. Initially, the inclined plate 22 is located inside the receiving bin 15. After the second cutter head 7 and the first cutter head 6 push the annular welding slag to collide with the first cutter 17 and the second cutter 19, the welding slag falls into the through groove 101 and onto the inclined plate 22. It then passes through the square groove along the inclined plate 22 and falls onto the upper surface of the horizontal part of the receiving bin 15. As the pusher plate 21 pushes the second support 18, the inclined plate 22 also moves synchronously with the second support 18 and enters the second state, allowing the composite tube to fall smoothly into the receiving bin 15 without being blocked by the inclined plate 22. By setting the inclined plate 22, the welding slag is collected, and the inclined plate 22 does not affect the normal descent of the composite tube. During the reset process of the second support 18, the tilting plate 22 will be driven back to its initial first state, preparing for the next composite pipe processing.

[0038] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An automatic slag cleaning system for the surface of metal composite pipe fittings, comprising a workbench (1), on which a first slide (2) and a second slide (3) are slidably mounted, a first tool holder (4) is fixedly mounted on the first slide (2), a second tool holder (5) is slidably mounted on the second slide (3), a first tool head (6) is mounted on the first tool holder (4), and a second tool head (7) is mounted on the second tool holder (5), characterized in that, The side of the first cutter head (6) opposite to the second cutter head (7) is adapted to the outer surface of the composite pipe; a horizontal groove (601) is provided on the side of the first cutter head (6) facing the second cutter head (7), and a slider (8) that fits into the horizontal groove (601) is slidably installed in the horizontal groove (601) and the two are connected by an elastic element; the slider (8) has a first state protruding from the first cutter head (6), a second state flush with the first cutter head (6), and a third state retracted into the horizontal groove (601).

2. The automatic slag cleaning system for the surface of metal composite pipes according to claim 1, characterized in that, A wedge block (9) is mounted on the slider (8) via a connecting plate, and a lifting plate (10) located above the wedge block (9) is slidably mounted on the first cutter head (6) in the vertical direction.

3. The automatic slag cleaning system for the surface of metal composite pipe fittings according to claim 2, characterized in that, A horizontal rigid arm (11) is fixedly installed on the second cutter head (7) at the position corresponding to the lifting plate (10). The bottom surface of the rigid arm (11) includes a first inclined part (1101), a horizontal part (1102), and a second inclined part (1103).

4. The automatic slag cleaning system for the surface of metal composite pipe fittings according to claim 3, characterized in that, The top of the lifting plate (10) is rotatably mounted with a first roller (12) that fits against the rigid arm (11), and the bottom of the lifting plate (10) is rotatably mounted with a second roller (13) that fits against the inclined surface of the wedge block (9).

5. The automatic slag cleaning system for the surface of metal composite pipe fittings according to claim 4, characterized in that, The workbench (1) is equipped with a stop (14) for axially limiting the composite pipe fitting.

6. The automatic slag cleaning system for the surface of metal composite pipe fittings according to claim 5, characterized in that, The workbench (1) is provided with a through groove (101) that allows composite pipe fittings to pass through, and a receiving bin (15) is installed at the bottom of the workbench (1) corresponding to the position of the through groove (101).

7. The automatic slag cleaning system for the surface of metal composite pipes according to claim 6, characterized in that, A first bracket (16) is fixedly installed on the workbench (1), and a first cutter (17) located above the through groove (101) is fixedly installed on the first bracket (16).

8. The automatic slag cleaning system for the surface of metal composite pipes according to claim 7, characterized in that, A second bracket (18) is slidably mounted on the workbench (1), and a second cutter (19) located below the first cutter (17) is fixedly mounted on the second bracket (18). A telescopic spring (20) is connected between the second bracket (18) and the workbench (1).

9. An automatic slag cleaning system for the surface of metal composite pipe fittings according to claim 8, characterized in that, The second cutter head (7) is fixedly mounted with a push plate (21) for pushing the second bracket (18).

10. An automatic slag cleaning system for the surface of metal composite pipe fittings according to claim 9, characterized in that, A square groove is provided on the side wall of the receiving bin (15) at the position below the blade of the second cutter (19). An inclined plate (22) corresponding to the position of the square groove is fixedly installed at the bottom of the second bracket (18) through a connecting arm. The inclined plate (22) has a first state located inside the receiving bin (15) and a second state located outside the receiving bin (15).

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