Laser cutting equipment for pipe fitting machining

Abstract

The invention provides laser cutting equipment for pipe fitting machining, and relates to the technical field of laser cutting, and the laser cutting equipment comprises a rotating part, a planetary gear type compound motion mechanism, a laser head and an auxiliary supporting part. According to the invention, the planetary gear type compound motion mechanism is arranged on the rack, the mechanism is provided with the input end in transmission connection with the rotating part, and the first output end and the second output end which form differential operation, the laser head is mounted at the first output end, and the auxiliary supporting part is mounted at the second output end; when the laser head rotates around the pipe fitting to nearly a circle, the auxiliary supporting piece just rotates and moves to a second position below the pipe fitting from a first position above the pipe fitting, and precise time sequence matching of the cutting progress and the supporting action is achieved; precise linkage of the cutting head and the auxiliary supporting piece is achieved through pure mechanical differential transmission, response delay and accumulative errors of electronic control are avoided, and the reliability of cutting and supporting synchronization is improved.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, specifically to a laser cutting device for processing pipe fittings. Background Technology

[0002] Laser pipe cutting machines have been widely used in the field of pipe processing. They use a laser cutting head to rotate and cut the clamped pipes, enabling high-efficiency and high-precision pipe processing.

[0003] When the pipe is about to be completely cut, the pipe portion will be pulled by gravity, causing "slag" to accumulate at the cut or damage to the laser head. Existing solutions include: Patent CN210755920U discloses a material unloading support device for a laser pipe cutting machine, which uses a receiving groove combined with a telescopic cylinder. After cutting, the cylinder drives the receiving groove to flip, allowing the cut pipe to slide to one side for unloading; another solution uses a lifting support plate structure, where the support plate rises during processing to hold the pipe, and lowers during unloading to allow the workpiece to automatically fall into the collection area.

[0004] However, the above-mentioned existing technologies still have the following shortcomings in practical applications: First, the timing of the support mechanism's action is mostly when it is raised after the cutting is completed or during the entire processing, lacking precise linkage with the cutting progress. At the moment of cutting, the pulling force generated by the downward droop of the section to be cut due to gravity will still cause quality problems such as slag and burrs on the cut. Second, the existing support structures mostly use independent cylinders or motors for drive, which require additional sensors and control systems, making the structure complex and costly. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a laser cutting device for pipe processing, which solves the problem of auxiliary support in the existing pipe cutting process.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A laser cutting device for processing pipe fittings, comprising:

[0008] Rotating components mounted on the frame;

[0009] A planetary gear compound motion mechanism is installed at the end of the frame and has an input end that is connected to the rotating component for transmission, and a first output end and a second output end that form differential operation.

[0010] The laser head is installed at the first output end of the planetary gear compound motion mechanism;

[0011] An auxiliary support is installed at the second output end of the planetary gear compound motion mechanism; when the laser head rotates around the tube to nearly one revolution, the auxiliary support moves from a first position above the tube to a second position below the tube.

[0012] Preferably, the rotating component includes:

[0013] The rotating body has an annular groove at one end of the frame, and is rotatably mounted inside the annular groove. A first gear ring is fixedly connected to one end of the rotating body facing the frame, and a connecting ring is fixedly connected to one end of the rotating body away from the frame.

[0014] A driving component is fixedly installed on the outside of the frame. The output end of the driving component is fixedly connected to a first gear. A notch communicating with an annular groove is provided on the outside of the frame. At the notch, the first gear meshes with a first gear ring component.

[0015] Preferably, the planetary gear compound motion mechanism includes:

[0016] The outer cover is integrally provided with a connecting section, a small cavity section and a large cavity section along the axial direction, and the connecting section is fixedly installed on the outer side of the end of the frame;

[0017] A central gear disc, located inside the outer cover and fixedly mounted on the end of the connecting ring;

[0018] The first gear ring is fixedly installed inside the small cavity segment. A plurality of first planetary teeth are provided in the annular gap between the first gear ring and the central gear disk. A first planetary carrier is connected between the plurality of first planetary teeth, so that the central gear disk, the first gear ring, the first planetary teeth, and the first planetary carrier form a first planetary gear system. The first planetary gear system takes the central gear disk as input and the support on the first planetary carrier as the first output end.

[0019] The second gear ring is fixedly installed inside the large cavity section. A number of second planetary teeth are provided in the annular gap between the second gear ring and the central gear plate. A second planetary carrier is connected between the number of second planetary teeth, so that the central gear plate, the second gear ring, the second planetary teeth, and the second planetary carrier form a second planetary gear system. The second planetary gear system takes the central gear plate as input and the support on the second planetary carrier as the second output end.

[0020] A cover plate is fixedly installed at one end of the outer cover away from the frame, and the cover plate is provided with sliding holes that allow the brackets on the first planetary carrier and the second planetary carrier to pass through.

[0021] Preferably, the inner cross-section of the small cavity segment is a regular polygonal structure, the inner cross-section of the large cavity segment is a circular structure, and the end of the second toothed ring facing the first toothed ring is provided with a polygonal portion located inside the small cavity segment.

[0022] Preferably, a stepped surface is formed between the inner side of the polygonal portion and the inner tooth portion of the second gear ring.

[0023] Preferably, there are two second planetary teeth, which divide the annular gap between the second gear ring and the central gear disk into a segment with a central angle greater than 180° and a segment with a central angle less than 180°. The support on the first planetary carrier is located in the segment with a central angle greater than 180°.

[0024] Preferably, two supports are fixedly connected to the outer side of the second planetary carrier at the corresponding positions of the two second planetary teeth;

[0025] The auxiliary support includes:

[0026] A connecting rod, the first end of which is rotatably connected to one of the supports of the second planetary carrier, and the second end of which is fixedly provided with an annular sleeve, the inside of which is fixedly provided with an elastic sleeve, the elastic sleeve being connected to the other support of the second planetary carrier;

[0027] A connecting seat is fixedly connected to a connecting rod. An arc-shaped frame is provided on the side of the connecting seat facing the pipe, and an inner support is fixedly connected to the inner side of the arc-shaped frame.

[0028] The outer end of the cover plate is fixedly connected to a guide platform. When the connecting rod, connecting seat, and inner support are rotated as a whole to the second position below the pipe, the annular sleeve of the connecting rod abuts against the inner side of the guide platform, causing the connecting rod, connecting seat, and inner support to rotate along the support of the second planetary carrier corresponding to the first end of the connecting rod, so that the connecting seat and inner support lift the pipe upward.

[0029] Preferably, an axial positioning annular groove is provided on the outer side of the rotating body, and a screw is threaded on the outer side of the frame, with one end of the screw located inside the axial positioning annular groove.

[0030] Preferably, a tooth-stopping cover is fixedly connected to one end of the central toothed disc away from the connecting ring.

[0031] Preferably, the inner side of the inner support is provided with a wear-resistant elastic liner.

[0032] This invention provides a laser cutting device for pipe fitting processing. It has the following advantages:

[0033] 1. This invention, by setting a planetary gear-type compound motion mechanism on the frame, has an input end that is connected to the rotating component for transmission, and a first output end and a second output end that form a differential operation. The laser head is installed at the first output end, and the auxiliary support is installed at the second output end. When the laser head rotates around the tube for nearly one revolution, the auxiliary support rotates and moves from the first position above the tube to the second position below the tube, realizing precise timing coordination between the cutting progress and the support action. Compared with the prior art, which requires additional sensors and control systems to achieve timing control, this invention achieves precise linkage between the cutting head and the auxiliary support through pure mechanical differential transmission, avoiding the response delay and cumulative error of electronic control, and improving the reliability of cutting and support synchronization.

[0034] 2. This invention utilizes the same central gear disk to simultaneously drive the first planetary gear system and the second planetary gear system. Due to the different transmission ratios of the two planetary gear systems, the first output end and the second output end have different revolution speeds, thereby enabling the laser head and the auxiliary support to rotate around the tube at different speeds. It has the advantages of compact structure and stable transmission.

[0035] 3. This invention features an auxiliary support component at the second output end of a planetary gear-type compound motion mechanism. This auxiliary support component includes a connecting rod, a connecting seat, and an inner support component, with a guide platform fixedly connected to the outer end of the cover plate. When the connecting rod, connecting seat, and inner support component rotate together with the second output end to a second position below the pipe, the annular sleeve of the connecting rod abuts against the inner side of the guide platform, forcing the connecting rod to rotate around the bracket corresponding to its first end. This causes the connecting seat and inner support component to lift upwards. After rotating to its designated position, the auxiliary support component automatically generates a radially upward feed motion, contacting and lifting the pipe, providing stable support force at the moment of cutting, effectively counteracting the sagging of the pipe due to gravity. Compared with existing technologies that require independent cylinders or motors to drive the radial movement of the support component, this invention utilizes the mechanical cooperation between the guide platform and the annular sleeve to achieve automatic triggering of radial feed, eliminating the need for an additional power source and control system, simplifying the equipment structure, and reducing manufacturing costs.

[0036] 4. This invention employs a coaxially arranged first and second planetary gear system. The first gear ring is fixedly fitted inside a small cavity section, and the second gear ring is fixedly fitted inside a large cavity section. Both planetary gear systems share the same central gear disk as input. The central gear disk is driven by a rotating component, simultaneously rotating the first and second planetary gears. Different rotational speeds are output through the first and second planetary carriers. The two planetary gear systems are arranged side-by-side axially and share the same outer housing. This integrates the entire differential transmission mechanism into a compact housing, resulting in a small axial dimension and minimal radial space occupation, facilitating installation at the end of the frame. It features a compact structure, high transmission efficiency, and convenient maintenance, making it particularly suitable for laser cutting environments for pipe fittings where equipment size is limited. Attached Figure Description

[0037] Figure 1 This is a perspective view of a laser cutting device for pipe fitting processing proposed in this invention;

[0038] Figure 2 This is a front view of a laser cutting device for pipe processing proposed in this invention;

[0039] Figure 3 This is a top view of a laser cutting device for pipe processing proposed in this invention;

[0040] Figure 4 This is a side view of a laser cutting device for pipe processing proposed in this invention;

[0041] Figure 5 for Figure 3 Cross-sectional view of section line AA in the middle;

[0042] Figure 6 This is a three-dimensional schematic diagram of the rotating component of a laser cutting device for pipe processing proposed in this invention;

[0043] Figure 7 This is a three-dimensional schematic diagram of the planetary gear-type composite motion mechanism of a laser cutting equipment for pipe processing proposed in this invention;

[0044] Figure 8 This is an exploded view of the planetary gear-type compound motion mechanism of a laser cutting equipment for pipe processing proposed in this invention;

[0045] Figure 9 This is an exploded view of the planetary gear-type compound motion mechanism of a laser cutting equipment for pipe processing proposed in this invention.

[0046] The components include: 1. Frame; 2. Rotating component; 3. Planetary gear compound motion mechanism; 4. Laser head; 5. Auxiliary support component; 6. Guide platform; 101. Annular groove; 102. Notch; 201. Drive component; 202. First gear; 203. Rotating body; 204. First gear ring component; 206. Axial positioning ring groove; 207. Connecting ring; 301. Outer cover; 301a. Connecting section; 301b. Small cavity section; 301c. Large cavity section; 302. Central gear disk; 303. First gear ring; 304. Second gear ring; 304a. Polygonal part; 305. First planetary gear; 306. Second planetary gear; 307. First planetary carrier; 308. Second planetary carrier; 309. Cover plate component; 501. Connecting rod component; 501a. Annular sleeve; 502. Elastic component; 503. Connecting seat; 504. Inner support component. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] Example 1:

[0049] like Figures 1-9 As shown, this embodiment of the invention provides a laser cutting device for pipe processing, used for segmented laser cutting of continuous long pipes, installed at the end of a frame 1 (the processed continuous long pipe is output from the end of the frame 1, which guides the continuous long pipe). The laser cutting device specifically includes: a rotating component 2, a planetary gear compound motion mechanism 3, a laser head 4, and an auxiliary support component 5.

[0050] The rotating component 2 is mounted on the frame 1 and serves as the displacement power source for the laser cutting equipment. The planetary gear compound motion mechanism 3 is mounted at the end of the frame 1. It has an input end that is connected to the rotating component 2 for transmission and a first output end and a second output end that form differential operation. That is, the rotating component 2 drives the planetary gear compound motion mechanism 3 to run, and the first output end and the second output end of the planetary gear compound motion mechanism 3 output differential power. The laser head 4 is mounted on the first output end of the planetary gear compound motion mechanism 3. The auxiliary support 5 is mounted on the second output end of the planetary gear compound motion mechanism 3. Based on the power distribution of the planetary gear compound motion mechanism 3, when the laser head 4 rotates around the tube a to almost one revolution (corresponding to when the tube a is about to be completely cut), the auxiliary support 5 rotates and moves from the first position above the tube a to the second position below the tube a.

[0051] It is understandable that when the auxiliary support 5 is located in the first position above the pipe a, it does not interfere with or affect the movement of the pipe a. When the rotating part 2 receives the control signal, it moves according to the set method to drive the planetary gear compound motion mechanism 3. The planetary gear compound motion mechanism 3 operates, and its first output end and second output end drive the laser head 4 and the auxiliary support 5 respectively. When the laser head 4 receives the working signal, it performs cutting operations on the pipe a while rotating around the pipe a. The auxiliary support 5 starts rotating around the pipe a synchronously from the first position above the pipe a. When the laser head 4 rotates around the pipe a to the point where it connects to the pipe a, it performs cutting operations on the pipe a. When the laser head 4 has rotated around the pipe a for about one week (360°), the laser head 4 will completely cut the pipe a. The above "about one week" corresponds to the time when the pipe a is about to be completely cut off. The auxiliary support 5 rotates and moves from the first position above the pipe a to the second position below the pipe a. At this time, the auxiliary support 5 supports the pipe a. In this way, when the laser head 4 cuts the pipe a, especially when the pipe a is about to be completely cut off, the pipe a is effectively supported, avoiding the problem of "slag" or damage to the laser head caused by the pipe being pulled by gravity.

[0052] In one embodiment, such as Figure 5 , Figure 6 As shown, the rotating component 2 includes: a rotating body 203, a first gear ring 204, a connecting ring 207, a driving component 201, and a first gear 202.

[0053] An annular groove 101 is provided at the end of the frame 1. The annular groove 101 is coaxial with the center hole of the frame 1 (the center hole of the frame 1 refers to the hole used to guide the pipe a). The rotating body 203 is rotatably installed inside the annular groove 101. A first gear ring 204 is fixedly connected to the end of the rotating body 203 facing the frame 1. The outer diameter of the first gear ring 204 is smaller than the outer diameter of the rotating body 203, so that it can be smoothly inserted into the annular groove 101. A connecting ring 207 is fixedly connected to the end of the rotating body 203 away from the frame 1. The connecting ring 207 is the rotation output end of the rotating part 2; the driving part 201 can be a servo motor or a stepper motor, which can control the output power with high precision. The driving part 201 is fixedly installed on the outside of the frame 1, for example, by using a motor bracket or by opening a corresponding mounting surface / mounting port on the outside of the frame 1. The output end of the driving part 201 is fixedly connected to the first gear 202. The outside of the frame 1 is provided with a notch 102 that communicates with the annular groove 101. At the notch 102, the first gear 202 meshes with the first gear ring 204.

[0054] It is understandable that the drive unit 201 receives an external control signal and directly drives the first gear 202 to rotate. The first gear 202 drives the first gear ring 204 to rotate. The first gear ring 204 and the rotating body 203 integrally formed with the first gear ring 204 rotate synchronously, thereby causing the connecting ring 207 to rotate coaxially with the center hole of the frame 1. This rotation is also around the rotation direction of the pipe a.

[0055] In one embodiment, such as Figures 5-9 As shown, the planetary gear compound motion mechanism 3 includes: an outer cover 301, a central gear disk 302, a first gear ring 303, a first planetary carrier 307, a second gear ring 304, a second planetary gear 306, and a cover plate 309.

[0056] like Figure 9 As shown: The outer cover 301 is integrally provided with a connecting section 301a, a small cavity section 301b, and a large cavity section 301c along the axial direction. The inner diameter of the large cavity section 301c is larger than the inner diameter of the small cavity section 301b. The connecting section 301a is fixedly installed on the outer side of the end of the frame 1 and can be fixed by bolts or locking clamps. Generally, a key fit is also designed at the part where the connecting section 301a mates with the outer side of the end of the frame 1 to ensure that the outer cover 301 will not rotate relative to the frame 1. The central gear disk 302 is located on the inner side of the outer cover 301 (the central hole of the central gear disk 302 is used to pass through the pipe a). The central gear disk 302 is fixedly installed on the end of the connecting ring 207. The central gear disk 302 rotates together with the connecting ring 207. It is a direct power input structure. The axial length of the central gear disk 302 is designed to be wider so that it can simultaneously meet the installation requirements of the first planetary gear system and the second planetary gear system.

[0057] Specifically, the first gear ring 303 is fixedly fitted inside the small cavity section 301b. A plurality of first planetary teeth 305 (e.g., designed as three) are arranged in the annular gap between the first gear ring 303 and the central gear disk 302. A first planetary carrier 307 connects the plurality of first planetary teeth 305, so that the central gear disk 302, the first gear ring 303, the first planetary teeth 305, and the first planetary carrier 307 constitute a first planetary gear system. This first planetary gear system takes the central gear disk 302 as input and the support on the first planetary carrier 307 as the input. The first output end is the second gear ring 304, which is fixedly installed inside the large cavity section 301c. Several second planetary teeth 306 are arranged in the annular gap between the second gear ring 304 and the central gear disk 302. The several second planetary teeth 306 are connected by a second planetary carrier 308, so that the central gear disk 302, the second gear ring 304, the second planetary teeth 306, and the second planetary carrier 308 constitute a second planetary gear system. The second planetary gear system takes the central gear disk 302 as the input and the bracket on the second planetary carrier 308 as the second output end.

[0058] The cover plate 309 is fixedly installed on the end of the outer cover 301 away from the frame 1, and the cover plate 309 is provided with sliding holes that allow the brackets on the first planetary carrier 307 and the second planetary carrier 308 to pass through. The cover plate 309 is designed to cover / cover the gear engagement of the first planetary gear train and the second planetary gear train, and to provide guidance for the brackets on the first planetary carrier 307 and the second planetary carrier 308.

[0059] It is understandable that in both the first and second planetary gear systems mentioned above, the reduction transmission is based on the central gear disk 302 as input. By setting the number of teeth of the second gear ring 304 to be larger and the number of teeth of the first gear ring 303 to be smaller, the reduction ratio of the second planetary gear system is larger, and the speed of the support on the corresponding second planetary carrier 308 is slower. For example, the reduction ratio of the first planetary gear system is designed to be 4-7 (not less than 4), and the reduction ratio of the second planetary gear system is designed to be 8-15 (about twice the reduction ratio of the first planetary gear system).

[0060] like Figure 4 As shown, the laser head 4 is positioned in the upper left and the auxiliary support 5 is positioned in the upper right. Both the laser head 4 and the auxiliary support rotate counterclockwise, with the laser head 4 rotating faster. When the laser head 4 rotates nearly 360°, the auxiliary support 5 rotates about 180°, positioning the auxiliary support 5 in the lower left position to provide auxiliary support for the pipe a.

[0061] In one embodiment, the inner cross-section of the small cavity segment 301b is a regular polygonal structure, the inner cross-section of the large cavity segment 301c is a circular structure, and the end of the second gear ring 304 facing the first gear ring 303 is provided with a polygonal portion 304a located inside the small cavity segment 301b.

[0062] The inner cross-section of the small cavity segment 301b is designed as a regular polygon, and the outer cross-section of the corresponding first gear ring 303 is also a regular polygon. In this way, the two can be stably matched and can effectively avoid relative rotation. The inner cross-section of the large cavity segment 301c is a circular structure. The end of the second gear ring 304 facing the first gear ring 303 is provided with a polygonal part 304a located inside the small cavity segment 301b. This polygonal part 304a corresponds to the small cavity segment 301b, which also restricts the relative rotation of the second gear ring 304.

[0063] In one embodiment, a stepped surface is formed between the inner side of the polygonal portion 304a and the inner tooth portion of the second gear ring 304. This stepped surface can restrict the second planetary tooth 306 on the inner side of the second gear ring 304, thereby restricting the axial movement of the second planetary tooth 306 and maintaining stable transmission of each structure.

[0064] In one embodiment, two second planetary teeth 306 are provided, and the two second planetary teeth 306 divide the annular gap between the second gear ring 304 and the central gear disk 302 into a segment with a central angle greater than 180° and a segment with a central angle less than 180°. The support on the first planetary carrier 307 is located in the segment with a central angle greater than 180°.

[0065] This design avoids interference between the support on the first planetary carrier 307 and the second planetary gear 306 during rotation. (See details...) Figure 7 The design positions of the two second planetary teeth 306.

[0066] The left side portion of the first planetary carrier 307 can slide and engage with the support on the first planetary carrier 307 (or it can be designed to be independent), which can further ensure the stability of the movement of the support on the first planetary carrier 307.

[0067] In one embodiment, two brackets are fixedly connected to the outer side of the second planetary carrier 308 at the corresponding positions of the two second planetary teeth 306. These two brackets are used to install the auxiliary support 5.

[0068] The auxiliary support 5 includes: a connecting rod 501, an elastic kit 502, a connecting seat 503, and an inner support 504.

[0069] The first end of the connecting rod 501 is rotatably connected to one of the supports of the second planetary carrier 308. The second end of the connecting rod 501 is fixedly provided with an annular sleeve 501a. An elastic sleeve 502 is fixedly provided inside the annular sleeve 501a. The elastic sleeve 502 is connected to another support of the second planetary carrier 308. The elastic sleeve 502 can be deformed by compression. That is, when the side of the annular sleeve 501a is subjected to force, the entire connecting rod 501 can rotate along the center of the support at the first end.

[0070] The connecting seat 503 is fixedly connected to the connecting rod 501. An arc-shaped frame is provided on the side of the connecting seat 503 facing the pipe a. An inner support 504 is fixedly connected to the inner side of the arc-shaped frame.

[0071] The outer end of the cover plate 309 is fixedly connected to the guide platform 6. When the connecting rod 501, the connecting seat 503, and the inner support 504 rotate as a whole to the second position below the pipe a, the annular sleeve 501a of the connecting rod 501 abuts against the inner side of the guide platform 6, causing the connecting rod 501, the connecting seat 503, and the inner support 504 to rotate as a whole along the support of the second planetary carrier 308 corresponding to the first end of the connecting rod 501, so that the connecting seat 503 and the inner support 504 lift the pipe a upward.

[0072] like Figure 1 , Figure 4As shown, when the auxiliary support 5 rotates counterclockwise, the annular sleeve 501a will first collide with the guide platform 6, that is, the side of the annular sleeve 501a is subjected to force, and the connecting rod 501 as a whole can rotate along the center of the bracket at the first end, so that the connecting rod 501, the connecting seat 503, and the inner support 504 as a whole rotate along the bracket of the second planetary carrier 308 corresponding to the first end of the connecting rod 501, so that the connecting seat 503 and the inner support 504 lift the pipe a upward.

[0073] In one embodiment, an axial positioning annular groove 206 is provided on the outer side of the rotating body 203, and a screw is threaded on the outer side of the frame 1, with one end of the screw located inside the axial positioning annular groove 206.

[0074] The engagement of the axial positioning groove 206 with the screw can restrict the axial movement of the rotating body 203 relative to the frame 1 and maintain the stability of the connection of the rotating body 203.

[0075] In one embodiment, a tooth-blocking cover is fixedly connected to one end of the central gear disk 302 away from the connecting ring 207. Since the support on the first planetary carrier 307 needs to rotate more than 360°, the cover plate 309 is designed to cover the central gear disk 302. The additionally designed tooth-blocking cover can effectively protect the teeth of the central gear disk 302.

[0076] In one embodiment, the inner side of the inner support member 504 is provided with a wear-resistant elastic liner. The wear-resistant elastic liner can effectively protect the outer side of the pipe a and reduce wear, thus extending its service life. It can be understood that the elastic design can provide a variable margin when the inner support member 504 supports the pipe a inward. That is, after the auxiliary support member 5 is supported, it continues to rotate a certain distance, and a greater supporting force is applied accordingly. The elasticity can provide an adaptive and buffering effect.

[0077] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser cutting device for processing pipe fittings, characterized in that, include: Rotating component (2) mounted on frame (1); The planetary gear compound motion mechanism (3) is installed at the end of the frame (1) and has an input end that is connected to the rotating part (2) for transmission, and a first output end and a second output end that form differential operation; The laser head (4) is installed at the first output end of the planetary gear compound motion mechanism (3); An auxiliary support (5) is installed at the second output end of the planetary gear compound motion mechanism (3); when the laser head (4) rotates around the tube (a) to nearly one revolution, the auxiliary support (5) rotates from the first position above the tube (a) to the second position below the tube (a).

2. The laser cutting equipment for pipe fitting processing according to claim 1, characterized in that, The rotating component (2) includes: The rotating body (203) has an annular groove (101) at the end of the frame (1). The rotating body (203) is rotatably installed inside the annular groove (101). A first gear ring (204) is fixedly connected to one end of the rotating body (203) facing the frame (1), and a connecting ring (207) is fixedly connected to one end of the rotating body (203) away from the frame (1). A drive unit (201) is fixedly installed on the outside of the frame (1). The output end of the drive unit (201) is fixedly connected to a first gear (202). The outside of the frame (1) is provided with a notch (102) communicating with an annular groove (101). At the notch (102), the first gear (202) meshes with a first gear ring (204).

3. The laser cutting equipment for pipe fitting processing according to claim 2, characterized in that, The planetary gear compound motion mechanism (3) includes: The outer cover (301) is integrally provided with a connecting section (301a), a small cavity section (301b) and a large cavity section (301c) along the axial direction. The connecting section (301a) is fixedly installed on the outer side of the end of the frame (1). A central gear disc (302) is located inside the outer cover (301) and is fixedly installed at the end of the connecting ring (207); A first gear ring (303) is fixedly installed inside the small cavity section (301b). A plurality of first planetary teeth (305) are provided in the annular gap between the first gear ring (303) and the central gear disk (302). A first planetary carrier (307) is connected between the plurality of first planetary teeth (305), so that the central gear disk (302), the first gear ring (303), the first planetary teeth (305), and the first planetary carrier (307) constitute a first planetary gear system. The first planetary gear system takes the central gear disk (302) as input and the bracket on the first planetary carrier (307) as the first output end. The second gear ring (304) is fixedly installed inside the large cavity section (301c). A plurality of second planetary teeth (306) are provided in the annular gap between the second gear ring (304) and the central gear disk (302). A second planetary carrier (308) is connected between the plurality of second planetary teeth (306), so that the central gear disk (302), the second gear ring (304), the second planetary teeth (306), and the second planetary carrier (308) constitute a second planetary gear system. The second planetary gear system takes the central gear disk (302) as input and the bracket on the second planetary carrier (308) as the second output end. The cover plate (309) is fixedly installed on the end of the outer cover (301) away from the frame (1), and the cover plate (309) is provided with sliding holes that allow the brackets on the first planetary carrier (307) and the brackets on the second planetary carrier (308) to pass through.

4. The laser cutting equipment for pipe fitting processing according to claim 3, characterized in that: The inner cross-section of the small cavity segment (301b) is a regular polygonal structure, and the inner cross-section of the large cavity segment (301c) is a circular structure. The second toothed ring (304) has a polygonal part (304a) located inside the small cavity segment (301b) at one end facing the first toothed ring (303).

5. The laser cutting equipment for pipe fitting processing according to claim 4, characterized in that: A stepped surface is formed between the inner side of the polygonal portion (304a) and the inner tooth portion of the second gear ring (304).

6. The laser cutting equipment for pipe fitting processing according to claim 3, characterized in that: The second planetary teeth (306) are provided in two parts. The two second planetary teeth (306) divide the annular gap between the second gear ring (304) and the central gear disk (302) into a segment with a central angle greater than 180° and a segment with a central angle less than 180°. The support on the first planetary carrier (307) is located in the segment with a central angle greater than 180°.

7. The laser cutting equipment for pipe fitting processing according to claim 6, characterized in that: Two supports are fixedly connected to the outer side of the second planetary carrier (308) at the corresponding positions of the two second planetary teeth (306); The auxiliary support (5) includes: A connecting rod (501) is provided with a first end rotatably connected to one of the supports of the second planetary carrier (308), and a ring sleeve (501a) is fixedly provided at the second end of the connecting rod (501). An elastic sleeve (502) is fixedly provided inside the ring sleeve (501a), and the elastic sleeve (502) is connected to the other support of the second planetary carrier (308). Connecting seat (503), the connecting seat (503) is fixedly connected to the connecting rod (501), and an arc-shaped frame is provided on the side of the connecting seat (503) facing the pipe (a), and an inner support (504) is fixedly connected to the inner side of the arc-shaped frame. The outer end of the cover plate (309) is fixedly connected to a guide platform (6). When the connecting rod (501), connecting seat (503), and inner support (504) rotate as a whole to the second position below the pipe (a), the annular sleeve (501a) of the connecting rod (501) abuts against the inner side of the guide platform (6), causing the connecting rod (501), connecting seat (503), and inner support (504) to rotate as a whole along the support of the second planetary carrier (308) corresponding to the first end of the connecting rod (501), so that the connecting seat (503) and inner support (504) lift the pipe (a) upward.

8. The laser cutting equipment for pipe fitting processing according to claim 2, characterized in that: An axial positioning groove (206) is provided on the outer side of the rotating body (203), and a screw is threaded on the outer side of the frame (1), with one end of the screw located inside the axial positioning groove (206).

9. The laser cutting equipment for pipe fitting processing according to claim 3, characterized in that: A tooth-stopping cover is fixedly connected to one end of the central toothed disc (302) away from the connecting ring (207).

10. A laser cutting device for pipe fitting processing according to claim 7, characterized in that: The inner side of the inner support (504) is provided with a wear-resistant elastic liner.

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