Small-bore welded pipe external adjusting inner burr on-line removal and liquid control device

Abstract

The application discloses a kind of small-bore welded pipe external adjustment internal burr on-line removal and control liquid device, including suspension base, extension rod, impedance device, air knife, tool holder rod and external adjustment mechanism;The suspension base is equipped on rack connecting seat;One end of the extension rod is connected with the suspension base, and the other end is connected with one end of the impedance device;The other end of the impedance device is connected with the air knife;The air knife is connected with the tool holder rod;The external adjustment mechanism is equipped on the suspension base, and is connected with the tool holder rod, to adjust the tool holder rod.The application has the advantages of simplified structure, improved work reliability, reduced quality hidden danger by compressed air control liquid.

Description

Technical Field

[0001] This invention relates to online burr removal and liquid control technology for small-diameter welded pipes, and more specifically, to an external adjustable online burr removal and liquid control device for small-diameter welded pipes, particularly suitable for online burr removal and liquid control technology for small-diameter welded pipes with a diameter of less than 30 mm. Background Technology

[0002] In the production process of small-diameter welded pipes, after the inner and outer welds fuse following forming, extrusion pressure generates burrs on both the inner and outer surfaces. These burrs need to be removed online simultaneously using internal and external deburring tools. Simultaneously, the heat generated by high-frequency welding necessitates continuous cooling of the impedance device (magnetic rod) and the tool holder. In actual production, the internal deburring device typically suspends the tool holder via a precision forming frame, forming an integral internal deburring tool holder through an extension rod, magnetic rod, and tool holder. This enables real-time online scraping of hot internal burrs. Cooling methods include direct current and reflux. In direct current, the emulsion enters through the corresponding hole in the suspended tool holder and is cooled via the tool holder's route before being directly discharged to the outside of the tool holder. In reflux, the emulsion cooled by the magnetic rod is discharged to the outside of the tool holder via the reflux route of the tool holder. Existing technologies for burr removal and fluid control in small-diameter welded pipes suffer from several drawbacks. Firstly, the limited space causes the hydraulic and emulsion routes within the tool holder to intersect, leading to unstable operating conditions. Secondly, the emulsion cannot flow rapidly along the pipe's direction of travel within the confined space, resulting in "reverse piping" and potentially impacting quality.

[0003] Existing patent applications, such as patent publication number CN201338138Y, disclose a device for removing internal burrs from welded pipes. This technology uses a built-in hydraulic cylinder to drive a wedge mechanism to adjust the scraping depth of the internal burr removal blade. However, this technology is only suitable for pipes with a diameter of 30mm or larger.

[0004] For example, patent publication number CN202943327U provides an internal burr removal device, which uses a mechanical cutter bar and controls the scraping depth of the internal burrs by adjusting the support roller with screws. Patent publication number CN203390322U provides an online internal burr removal device for small-diameter welded pipes. Both of these patented technologies require opening a window on the upper surface of the steel pipe at the corresponding location to achieve the desired effect.

[0005] For example, the planing-type offline internal burr removal tool holder provided by patent publication number CN205888280U is only an offline internal burr removal technology. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the present invention aims to provide an externally adjustable online burr removal and liquid control device for small-diameter welded pipes, which has the advantages of simplified structure, improved operational reliability, and reduced quality risks through compressed air liquid control.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An externally adjustable online burr removal and liquid control device for small-diameter welded pipes includes a suspension base, an extension rod, an impedance device, an air knife, a knife holder rod, and an external adjustment mechanism.

[0009] The suspension base is mounted on the frame connecting seat;

[0010] One end of the extension rod is connected to the suspension base, and the other end is connected to one end of the impedance device;

[0011] The other end of the impedance device is connected to the air knife;

[0012] The air knife is connected to the knife holder rod;

[0013] The external adjustment mechanism is located on the suspension base and connected to the tool holder rod, and is used to adjust the tool holder rod.

[0014] Preferably, the suspension base is provided with a vertical through vent hole;

[0015] The bottom of the suspension base has a horizontal through hole, and a sleeve is installed inside the through hole.

[0016] Preferably, a central through hole is provided at the center position of the extension rod;

[0017] The extension rod is also provided with a first emulsion routing hole.

[0018] Preferably, one end of the extension rod is threaded to the sleeve, and the other end is threaded to one end of the impedance device.

[0019] Preferably, a compressed air routing hole is provided at the center of the impedance, and the compressed air routing hole is connected to the through vent hole;

[0020] The impedance device is also provided with a second emulsion routing hole, which is connected to the first emulsion routing hole.

[0021] Preferably, the air knife includes a first air knife body and a second air knife body connected in sequence;

[0022] The first air knife body is threadedly connected to the impedance device;

[0023] The second air knife body is sealed to the knife holder rod.

[0024] Preferably, the tool holder rod includes a tool holder rod body, a support wheel, a wedge mechanism, and a ring-shaped tool;

[0025] The cutter holder rod body is sealed to the second air knife body;

[0026] The annular cutter is mounted on the cutter holder rod body;

[0027] The blade holder rod body is lifted by the wedge mechanism, so that the annular blade can fit against the inner wall of the welded pipe;

[0028] The support wheel is located on the outside of the tool holder rod body and the wedge mechanism.

[0029] Preferably, the wedge mechanism includes a horizontal slider, a vertical slider, and a vertical guide groove;

[0030] The horizontal slider has an inclined surface below it, and the vertical slider has an inclined surface above it. The inclined surfaces of the horizontal slider and the vertical slider are arranged to fit against each other.

[0031] The vertical slider moves up and down along the vertical guide groove;

[0032] The support wheel is located below the vertical slider.

[0033] Preferably, the external adjustment mechanism includes a hydraulic cylinder and a pull rod;

[0034] The hydraulic cylinder is connected to the sleeve;

[0035] One end of the pull rod is connected to the output end of the hydraulic cylinder, and the other end passes through the sleeve, the extension rod, the impedance device, the air knife, the knife holder rod and is threadedly connected to the horizontal slider.

[0036] Preferably, the external adjustment mechanism includes a tail threaded pair and a pull rod;

[0037] The tail threaded part is connected to the sleeve;

[0038] One end of the pull rod is connected to the tail threaded pair, and the other end passes through the sleeve, the extension rod, the impedance device, the air knife, and the knife holder rod in sequence and is threadedly connected to the horizontal slider.

[0039] Preferably, the pull rod is made of a high-temperature resistant material.

[0040] This invention provides an externally adjustable online burr removal and liquid control device for small-diameter welded pipes, which features simplified structure, improved operational reliability, and reduced quality risks through compressed air liquid control. In specific implementation, the suspended scraper seat, extension rod, and impedance device are connected sequentially and installed on the machine. The adjusting rod is inserted in reverse and threadedly connected to the horizontal slider of the scraper seat rod and tightened. The scraper seat rod is then threadedly connected to the impedance device and tightened. The external adjusting mechanism is then secured in place, and the hydraulic lines are connected. During trial operation, a sample pipe can be used to pre-test and adjust the lifting and adjusting mechanism. After the steel pipe passes the initial test, a trial weld is performed, followed by an opening inspection to check for internal burr removal and adjustment. After several adjustments, online internal burr removal and liquid control (preventing emulsion backflow and pipe surge) can be achieved. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of the small-diameter welded pipe external adjustment online burr removal and liquid control device of the present invention;

[0042] Figure 2 This is a schematic diagram of the inclined wedge mechanism in the small-diameter welded pipe external adjustment online burr removal and liquid control device of the present invention;

[0043] Figure 3 This is a schematic diagram of the hydraulic cylinder in the small-diameter welded pipe external adjustment online burr removal and liquid control device of the present invention. Detailed Implementation

[0044] To better understand the above-mentioned technical solutions of the present invention, the technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0045] Combination Figure 1 As shown, the present invention provides an externally adjustable online burr removal and liquid control device for small-diameter welded pipes, comprising a suspension base 1, an extension rod 2, an impedance device 3, an air knife 4, a knife holder rod 5, and an external adjustment mechanism 6.

[0046] The suspension base 1 is installed on the frame connector.

[0047] A through vent 11 is opened on the vertical direction of the suspension base 1.

[0048] A horizontal through hole is opened at the bottom of the suspension base 1, and a sleeve 12 is installed inside the through hole.

[0049] A central through hole is provided at the center of the extension rod 2, and a first emulsion routing hole is provided at the other positions.

[0050] The two ends of the extension rod 2 are connected to the sleeve 12 and the impedance device 3 by threads to form a sealed structure.

[0051] Impedance element 3 has a three-layer structure, with a compressed air routing hole 31 at its center, which is connected to the through vent hole 11.

[0052] The outer layer route formed by the magnetic rod and the resin tube on the impedance device 3 forms a second emulsion routing hole, which is connected to the first emulsion routing hole.

[0053] The two ends of the impedance device 3 are connected to the extension rod 2 and the air knife 4 by threads to form a sealed structure.

[0054] The air knife 4 includes a first air knife body 41 and a second air knife body 42 connected in sequence.

[0055] The first air knife body 41 and the impedance device 3 are connected by threads to form a sealed structure.

[0056] The second air knife body 42 and the knife holder rod body 51 of the knife holder rod 5 are connected by threads to form a sealed structure.

[0057] The tool holder rod 5 includes a tool holder rod body 51, a support wheel 52, a wedge mechanism 53, and a ring cutter 54.

[0058] The ring cutter 54 is mounted on the front end of the cutter holder body 51.

[0059] The tool holder rod body 51 is lifted by the wedge mechanism 53, so that the ring tool 54 can fit against the inner wall of the welded pipe to remove burrs.

[0060] Support wheels 52 are respectively installed on the outer side of the tool holder rod body 51 and the wedge mechanism.

[0061] Combination Figure 2 As shown, the wedge mechanism 53 includes a horizontal slider 531, a vertical slider 532, and a vertical guide groove 533.

[0062] A slope is provided below the horizontal slider 531 and a slope is provided above the vertical slider 532. The slopes of the horizontal slider 531 and the slopes of the vertical slider 532 are set to fit together to form a wedge structure.

[0063] The vertical slider 532 can move up and down along the vertical guide groove 533.

[0064] The support wheel 52 is located below the vertical slider 533.

[0065] The first type of external adjustment mechanism 6 includes a hydraulic cylinder 61 and a pull rod 62.

[0066] Hydraulic cylinder 61 is connected to sleeve 12.

[0067] One end of the pull rod 62 is connected to the output end of the hydraulic cylinder 61, and the other end passes through the vent hole at the center of the sleeve 12, extension rod 2, impedance device 3, air knife 4, and knife holder rod 5 in sequence, and is threaded to the horizontal slider 531 to form a fast connection.

[0068] The second type of external adjustment mechanism 6 includes a tail threaded pair and a pull rod 62.

[0069] The tail threaded part is connected to the sleeve 12.

[0070] One end of the pull rod 62 is connected to the tail threaded pair, and the other end passes through the ventilation hole at the center of the sleeve 12, extension rod 2, impedance device 3, air knife 4, and knife holder rod 5 in sequence, and is threaded to the horizontal slider 531 to form a fast connection.

[0071] The pull rod 62 is made of high-temperature resistant material (carbon fiber).

[0072] Example

[0073] See again Figures 1 to 3 As shown, this embodiment provides an externally adjustable online burr removal and liquid control device for small-diameter welded pipes, including a suspension base 1, an extension rod 2, an impedance device 3, an air knife 4, a knife holder rod 5, and an external adjustment mechanism 6.

[0074] The suspension base 1 is installed on the frame connector with a snap-fit ​​structure.

[0075] The extension rod 2 is threadedly connected to the sleeve 12 that is installed through the suspension base 1.

[0076] O-rings are provided at the interfaces at both ends of the central through hole and the first emulsion route hole on the extension rod 2 to form a seal with the corresponding inner cavity.

[0077] The other end of the extension rod 2 is fastened to the impedance device 3 by threads. The impedance device 3 has a coaxial three-layer structure (outer, middle, and inner layers). The other end is fastened to the air knife 4 by threads.

[0078] The air knife 4 is formed by the first air knife body 41 and the second air knife body 42 through a threaded connection to form an annular compressed air outlet. The internal cavity is connected to the outer cavity of the pull rod 61 by a number of radial air holes. The emulsion is discharged from the knife holder 5 through the axial hole at the end of the impedance device 3.

[0079] The air knife 4 and the knife holder rod body 51 are connected by threads to form a sealed and fastened connection.

[0080] The tool holder rod body 51 is supported in the inner cavity of the welded pipe by the support wheel 52 and the wedge mechanism 53, and the ring cutter 54 is fastened to the mounting hole of the tool holder rod body 51 with screws.

[0081] The external adjustment mechanism 6 has a pull rod 61 connected to a horizontal slider 531 at one end. The slider moves under the action of the hydraulic cylinder 62, which drives the vertical slider 532 (along the vertical guide groove 533) to move downward, thereby realizing the adjustment of the internal burr removal depth and meeting the internal burr removal needs of various specifications and working conditions.

[0082] The pull rod 61 is made of carbon fiber and is connected to the horizontal slider 531. The horizontal movement of the slider 531 drives the lower support wheel 52 away from the center of the cutter holder rod body 51. Since the lower support wheel 52 is in rigid contact with the lower surface of the inner cavity of the welded pipe material, the cutter holder rod body 51 is lifted in the vertical direction, thereby enabling the internal deburring knife to scrape the burrs inside the welded pipe.

[0083] The external adjustment mechanism 6 can also be adjusted by a tail thread pair. After manually adjusting the thread to move the pull rod 61 axially to the required position, locking technology is used to ensure the stability and reliability of the tool holder lifting height.

[0084] The tool holder rod body 51 has several inclined (30-45° angle with radial and axial) purging air holes along the circumferential direction inside the inlet end. External compressed air enters the central cavity of the sleeve through the vertical hole of the suspended tool holder, and forms a cavity through the purging air holes along the central hole of the pull rod 61, extension rod 2, and impedance device 3. A certain pressure band rotating airflow is formed in the inner cavity of the steel pipe, which complements the air knife 4 and promotes the high-frequency welding heating area of ​​the emulsion in the cavity, reducing the quality risks caused by emulsion piping.

[0085] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any variations or modifications to the above embodiments that are within the spirit and essence of the present invention will fall within the scope of the claims of the present invention.

Claims

1. A device for external adjustment of internal burrs and online removal and liquid control of small-diameter welded pipes, characterized in that: Includes suspension base, extension rod, impedance device, air knife, knife holder rod, and external adjustment mechanism; The suspension base is mounted on the frame connecting seat; One end of the extension rod is connected to the suspension base, and the other end is connected to one end of the impedance device; The other end of the impedance device is connected to the air knife; The air knife is connected to the knife holder rod; The external adjustment mechanism is located on the suspension base and connected to the tool holder rod, and is used to adjust the tool holder rod.

2. The small-diameter welded pipe external adjustment online burr removal and liquid control device according to claim 1, characterized in that: The suspension base is provided with a vertical through-vent hole; The bottom of the suspension base has a horizontal through hole, and a sleeve is installed inside the through hole.

3. The small-diameter welded pipe external adjustment online burr removal and liquid control device according to claim 2, characterized in that: A central through hole is provided at the center of the extension rod; The extension rod is also provided with a first emulsion routing hole.

4. The small-diameter welded pipe external adjustment online burr removal and liquid control device according to claim 2, characterized in that: One end of the extension rod is threaded to the sleeve, and the other end is threaded to one end of the impedance device.

5. The small-diameter welded pipe external adjustment online burr removal and liquid control device according to claim 3, characterized in that: A compressed air routing hole is provided at the center of the impedance, and the compressed air routing hole is connected to the through vent hole; The impedance device is also provided with a second emulsion routing hole, which is connected to the first emulsion routing hole.

6. The small-diameter welded pipe external adjustment online burr removal and liquid control device according to claim 5, characterized in that: The air knife includes a first air knife body and a second air knife body connected in sequence; The first air knife body is threadedly connected to the impedance device; The second air knife body is sealed to the knife holder rod.

7. The small-diameter welded pipe external adjustment online burr removal and liquid control device according to claim 6, characterized in that: The tool holder rod includes a tool holder rod body, a support wheel, a wedge mechanism, and a ring-shaped tool; The cutter holder rod body is sealed to the second air knife body; The annular cutter is mounted on the cutter holder rod body; The blade holder rod body is lifted by the wedge mechanism, so that the annular blade can fit against the inner wall of the welded pipe; The support wheel is located on the outside of the tool holder rod body and the wedge mechanism.

8. The small-diameter welded pipe external adjustment online burr removal and liquid control device according to claim 7, characterized in that: The wedge mechanism includes a horizontal slider, a vertical slider, and a vertical guide groove; The horizontal slider has an inclined surface below it, and the vertical slider has an inclined surface above it. The inclined surfaces of the horizontal slider and the vertical slider are arranged to fit against each other. The vertical slider moves up and down along the vertical guide groove; The support wheel is located below the vertical slider.

9. The small-diameter welded pipe external adjustment online burr removal and liquid control device according to claim 8, characterized in that: The external adjustment mechanism includes a hydraulic cylinder and a pull rod; The hydraulic cylinder is connected to the sleeve; One end of the pull rod is connected to the output end of the hydraulic cylinder, and the other end passes through the sleeve, the extension rod, the impedance device, the air knife, the knife holder rod and is threadedly connected to the horizontal slider.

10. The small-diameter welded pipe external adjustment online burr removal and liquid control device according to claim 8, characterized in that: The external adjustment mechanism includes a tail threaded pair and a pull rod; The tail threaded part is connected to the sleeve; One end of the pull rod is connected to the tail threaded pair, and the other end passes through the sleeve, the extension rod, the impedance device, the air knife, and the knife holder rod in sequence and is threadedly connected to the horizontal slider.

11. The small-diameter welded pipe external adjustment online burr removal and liquid control device according to claim 9 or 10, characterized in that: The pull rod is made of high-temperature resistant material.

Images