Double-chuck assembly and pipe cutting machine

Abstract

The invention relates to the technical field of laser pipe cutting equipment, in particular to a double-chuck assembly and a pipe cutting machine. Wherein the double-chuck assembly comprises a transverse guide rail, a first chuck assembly, a second chuck assembly, a first linear driver and a second linear driver; the first chuck assembly comprises a first chuck main body and a plurality of roller clamping pieces arranged on the first chuck main body; and the second chuck assembly comprises a second chuck main body and a plurality of roller clamping pieces arranged on the second chuck main body. According to the double-chuck assembly, the first chuck assembly body provided with the multiple roller clamping pieces and the second chuck assembly body provided with the multiple roller clamping pieces are used in a matched mode, and the double-chuck assembly can be suitable for cutting, clamping and positioning of special-shaped long-strip-shaped sectional materials.

Description

Technical Field

[0001] The present invention relates to the technical field of laser tube cutting equipment, and in particular to a double chuck assembly and a tube cutting machine. Background Art

[0002] The existing laser tube cutting machine is coordinated by multiple chucks, and chucks are respectively set at the front, middle and rear of the laser tube cutting machine base to clamp and fix the long strip profile, thereby completing the movement of the long strip profile before and after cutting.

[0003] Current chucks consist of multiple clamping elements with rollers. These elements, positioned relative to each other, move relative to each other to position the long strip of material in the center. Due to the long rollers and the large size of each clamping element, this type of chuck is generally suitable for clamping long strips with relatively square cross-sections. However, if you need to cut unusual cross-sectional shapes, such as those with multiple convex corners and irregular shapes, current chucks with rollers are not suitable.

[0004] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the Invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a double chuck assembly and a pipe cutting machine, aiming to solve the technical problem that the chuck of the laser pipe cutting machine in the prior art is not suitable for long strip profiles with irregular cross-sections.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A first aspect of the present invention provides a double chuck assembly, comprising a transverse guide rail, a first chuck assembly, a second chuck assembly, a first linear drive and a second linear drive; the first chuck assembly is slidably connected to the transverse guide rail through a first slide; the second chuck assembly is slidably connected to the transverse guide rail through a second slide; the output end of the first linear drive is fixedly connected to the first slide; the output end of the second linear drive is fixedly connected to the second slide; the first chuck assembly comprises a first chuck body and a plurality of roller clamps arranged on the first chuck body; a first through hole is provided in the middle of the first chuck body; a plurality of roller clamps are circumferentially arranged with the first through hole as the center; the second chuck assembly comprises a second chuck body and a plurality of roller clamps arranged on the second chuck body; a second through hole is provided in the middle of the first chuck body; a plurality of roller clamps are circumferentially arranged with the second through hole as the center; the first chuck body and the second chuck body are coaxially arranged.

[0008] The double chuck assembly, wherein a first annular rotating mechanism is provided on the side wall of the first chuck body; a plurality of roller clamps are provided on the first annular rotating mechanism, and the first through hole is located in the middle of the first annular rotating mechanism; a first driving mechanism is provided on the first chuck body, and the first driving mechanism is transmission-connected to the first annular rotating mechanism, for making the first annular rotating mechanism rotate around the first through hole.

[0009] The double chuck assembly, wherein a second annular rotation mechanism is provided on the side wall of the second chuck body; a plurality of roller clamps are provided on the second annular rotation mechanism, and the second through hole is located in the middle of the second annular rotation mechanism; a second driving mechanism is provided on the second chuck body, and the second driving mechanism is transmission-connected to the second annular rotation mechanism, for making the second annular rotation mechanism rotate around the second through hole.

[0010] The double chuck assembly, wherein the roller clamp includes a first movable bracket and at least one roller arranged on the first movable bracket; a first linear track is provided on the side wall of the first chuck body, and the first movable bracket is provided on the first linear track; the roller clamp includes a second movable bracket and at least one support rod provided on the second movable bracket; the outer end of the support rod is movably connected to a roller; a second linear track is provided on the side wall of the second chuck body, and the second movable bracket is provided on the second linear track.

[0011] The double chuck assembly, wherein a clamping hole is provided on the second movable bracket; an elastic member is provided at the bottom of the clamping hole; one end of the support rod is inserted into the clamping hole and abuts against the elastic member; the other end of the support rod is movably connected to the roller.

[0012] The double chuck assembly, wherein the roller includes two oppositely arranged hemispherical wheels; a connecting shaft is provided at the outer end of the support rod; and both ends of the connecting shaft are respectively rotatably connected to the two hemispherical wheels.

[0013] In the double chuck assembly, the insertion end of the support rod is provided with a protruding structure; the opening of the clamping hole is provided with an annular protrusion, and the annular protrusion is used to limit the protruding structure from escaping from the clamping hole.

[0014] The double chuck assembly, wherein the roller clamps are provided in four numbers; two rollers are provided on each first movable bracket; the roller is arranged at one end of the first movable bracket close to the first through hole; the roller clamps are provided in four numbers; two roller clamps are provided on each second movable bracket.

[0015] A second aspect of the present invention provides a pipe cutting machine, comprising a multi-chuck laser cutting machine, a loading device and a receiving device, wherein the multi-chuck laser cutting machine is provided with a plurality of double-chuck assemblies as described above.

[0016] The pipe cutting machine, wherein the multi-chuck laser cutting machine includes a base, a laser cutting assembly arranged in the middle of the base, and a plurality of double chuck assemblies as described above arranged on the base in sequence from left to right.

[0017] Beneficial Effects: The present invention provides a dual chuck assembly, wherein a first chuck assembly is provided with multiple roller clamps, and a second chuck assembly is provided with multiple wheel clamps. The present invention utilizes the multiple roller clamps to provide primary support and positioning for the profile. When the first chuck is unable to properly grip a special-shaped profile, the wheel clamps of the second chuck can be inserted into the small grooves of the profile, collaborating with the first chuck assembly to grip and position the profile.

[0018] The present invention also provides a pipe cutting machine, wherein a multi-chuck laser cutting machine of the pipe cutting machine is provided with a plurality of double-chuck assemblies as described above, and can be applied to long strip profiles with different cross-sectional shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure of the double chuck assembly Figure 1 .

[0020] Figure 2 Schematic diagram of the structure of the double chuck assembly Figure 2 .

[0021] Figure 3 It is a structural schematic diagram of the first chuck assembly.

[0022] Figure 4 Schematic diagram of the structure of the second chuck assembly.

[0023] Figure 5 It is a schematic diagram of the local structure of the roller clamp.

[0024] Figure 6 It is a structural diagram of the pipe cutting machine.

[0025] Main component symbols: A-double chuck assembly, 1-cross guide rail, 2-first chuck assembly, 3-second chuck assembly, 4-first linear drive, 5-second linear drive, 6-first slide, 7-second slide, 21-first chuck body, 211-first through hole, 22-roller clamp, 31-second chuck body, 311-second through hole, 32-roller clamp, 23-first annular rotation mechanism, 24-first drive mechanism, 33-second annular rotation mechanism Driving mechanism, 34-second driving mechanism, 221-first movable bracket, 222-roller, 223-first linear rail, 321-second movable bracket, 322-support rod, 323-roller, 324-second linear rail, 325-card hole, 326-elastic member, 3231-hemispherical wheel, 327-connecting shaft, 328-protrusion structure, 329-annular protrusion, B-laser cutting assembly, C-feeding device, D-material receiving device, E-base. DETAILED DESCRIPTION

[0026] The present invention provides a dual chuck assembly and a pipe cutting machine. To make the objectives, technical solutions, and effects of the present invention more clear and explicit, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0027] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, and a specific direction structure and operation, and therefore, cannot be understood as a limitation on the present invention. In addition, "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means more than two.

[0028] See also Figure 1-Figure 4The first aspect of the present invention provides a double chuck assembly A, comprising a transverse guide rail 1, a first chuck assembly 2, a second chuck assembly 3, a first linear drive 4 and a second linear drive 5; the first chuck assembly 2 is slidably connected to the transverse guide rail 1 through a first slide 6; the second chuck assembly 3 is slidably connected to the transverse guide rail 1 through a second slide 7; the output end of the first linear drive 4 is fixedly connected to the first slide 6; the output end of the second linear drive 5 is fixedly connected to the second slide 7; the first chuck assembly 2 comprises a first chuck body 21 and a plurality of a roller clamp 22 arranged on the first chuck body 21; a first through hole 211 is provided in the middle of the first chuck body 21; a plurality of roller clamps 22 are arranged circumferentially with the first through hole 211 as the center; the second chuck assembly 3 includes a second chuck body 31 and a plurality of roller clamps 32 arranged on the second chuck body 31; a second through hole 311 is provided in the middle of the first chuck body 21; a plurality of roller clamps 32 are arranged circumferentially with the second through hole 311 as the center; the first chuck body 21 and the second chuck body 31 are coaxially arranged.

[0029] The function of the roller clamps 22 and the roller clamps 22 is to limit the movement of the long strip profile in the upward, downward, left and right directions, while allowing the long strip profile to move forward and backward under the clamping of the roller clamps 22 and the roller clamps 22.

[0030] When the double chuck assembly A of the present invention is in use, multiple roller clamps 22 and multiple roller clamps 32 can be arranged relative to each other as needed, or they can be staggered. Each roller clamp 22 and roller clamp 32 can be controlled individually, or two relatively arranged roller clamps 22 can be controlled simultaneously. When faced with a long strip profile with a relatively square cross-section, the roller clamp 22 can be used alone to clamp and position the profile. When faced with a long strip profile with an irregular cross-section, the roller clamp 22 may only be able to clamp the upper and lower surfaces of the irregular long strip profile very well, then it is necessary to use the roller clamp 22 and the roller clamp 32 at the same time for clamping and positioning, such as allowing the roller clamp 32 to be pressed against the groove of the irregular profile. The transverse guide rail 1 is used to be fixed on the transverse bracket. The first linear drive 4 and the second linear drive 5 are respectively used to move the first chuck assembly 2 and the second chuck assembly 3 along the transverse guide rail 1. During specific use, the long strip of profile passes through the first through hole 211 and the second through hole 311 , and then the roller clamp and the wheel clamp 32 extend toward the long strip of profile to clamp and position the long strip of profile.

[0031] See also Figure 3In one embodiment, a first annular rotating mechanism 23 is provided on the sidewall of the first chuck body 21; multiple roller clamps 22 are disposed on the first annular rotating mechanism 23, with the first through-hole 211 located in the center of the first annular rotating mechanism 23; and a first driving mechanism 24 is provided on the first chuck body 21. The first driving mechanism 24 is in transmission connection with the first annular rotating mechanism 23 and is configured to rotate the first annular rotating mechanism 23 about the first through-hole 211. When the first annular rotating mechanism 23 rotates, the multiple roller clamps 22 located on the first annular rotating mechanism 23 rotate accordingly, thereby allowing the clamping angles of the multiple roller clamps 22 to be adjusted as needed.

[0032] See also Figure 4 In one embodiment, a second annular rotation mechanism 33 is provided on the sidewall of the second chuck body 31; multiple roller clamps 32 are disposed on the second annular rotation mechanism 33, and the second through hole 311 is located in the center of the second annular rotation mechanism 33. A second driving mechanism 34 is provided on the second chuck body 31 and is transmission-connected to the second annular rotation mechanism 33 to rotate the second annular rotation mechanism 33 about the second through hole 311. When the second annular rotation mechanism 33 rotates, the multiple roller clamps 32 on the second annular rotation mechanism 33 rotate accordingly, thereby allowing the clamping angles of the multiple roller clamps 32 to be adjusted as needed.

[0033] Under the action of the first annular rotating mechanism 23 and the second annular rotating mechanism 33, the plurality of roller clamps 22 and the wheel clamps 32 can be arranged relative to each other or staggered, and their positions can be adjusted according to profiles of different shapes.

[0034] See also Figure 3 and Figure 4 In one embodiment, the roller clamp 22 includes a first movable bracket 221 and at least one roller 222 arranged on the first movable bracket 221; a first linear rail 223 is provided on the side wall of the first chuck body 21, and the first movable bracket 221 is provided on the first linear rail 223; the roller clamp 32 includes a second movable bracket 321 and at least one support rod 322 arranged on the second movable bracket 321; the outer end of the support rod 322 is movably connected to the roller 323; a second linear rail 324 is provided on the side wall of the second chuck body 31, and the second movable bracket 321 is provided on the second linear rail 324.

[0035] Specifically, the number and position of the first linear rails 223 correspond to the number and position of the first movable brackets 221. The first movable brackets 221 move along the first linear rails 223 to move the roller 222 closer to or farther from the axis of the first chuck body 21. Similarly, the number and position of the second linear rails 324 correspond to the number and position of the second movable brackets 321. The second movable brackets 321 move along the second linear rails 324 to move the roller 323 closer to or farther from the axis of the second chuck body 31.

[0036] See also Figure 5 In one embodiment, the second movable bracket 321 is provided with a latch hole 325; an elastic member 326 is provided at the bottom of the latch hole 325; one end of the support rod 322 is inserted into the latch hole 325 and abuts against the elastic member 326; the other end of the support rod 322 is movably connected to the roller 323. The provision of the elastic member 326 can give the roller latch 32 a certain degree of elasticity, providing a certain buffering effect when the roller 323 contacts the surface of the profile. When clamping some low-strength special-shaped profiles, this can effectively prevent the profile from being deformed due to the instantaneous excessive force during initial contact and clamping.

[0037] See also Figure 5 In one embodiment, the roller 323 includes two oppositely positioned hemispherical wheels 3231. A connecting shaft 327 is provided at the outer end of the support rod 322. The ends of the connecting shaft 327 are rotatably connected to the two hemispherical wheels 3231. Specifically, the curved side of the hemispherical wheels 3231 faces outward, while the flat side is rotatably connected to the connecting shaft 327. The curved surface of the hemispherical wheels 3231 allows for better contact with the surfaces of various profiles, providing greater adaptability.

[0038] See also Figure 5 In one embodiment, the insertion end of the support rod 322 is provided with a protrusion structure 328; the opening of the clamping hole 325 is provided with an annular protrusion 329, and the annular protrusion 329 is used to limit the protrusion structure 328 from escaping from the clamping hole 325.

[0039] See also Figure 1-Figure 4In one embodiment, four roller clamps 22 are provided; two rollers 222 are provided on each first movable bracket 221; the rollers 222 are located at the end of the first movable bracket 221 near the first through-hole 211; four roller clamps 32 are provided; two roller clamps 32 are provided on each second movable bracket 321. Specifically, the four roller clamps 22 are located on the upper, lower, left, and right sides of the first through-hole 211, respectively. Similarly, the four roller clamps 32 are located on the upper, lower, left, and right sides of the first through-hole 211, respectively. The two roller clamps 22 on the first movable bracket 221 are arranged parallel to each other. The clamping action of the multiple roller clamps 22 forms a straight clamping channel. Before entering this clamping channel, the long profile will have a certain offset at both ends due to gravity and center of gravity. However, the correction provided by the multiple sets of rollers 222 and rollers 323 ensures that the profile passing through the channel remains straight, ensuring that the cut surface meets the required precision.

[0040] See also Figure 6 A second aspect of the present invention provides a pipe cutting machine comprising a multi-chuck laser cutting machine, a loading device C, and a receiving device D. The multi-chuck laser cutting machine is equipped with multiple dual-chuck assemblies A as described above. The inclusion of multiple dual-chuck assemblies A broadens the applicability of the pipe cutting machine and can meet the needs of cutting special, long, and irregularly shaped profiles.

[0041] See also Figure 6 In one embodiment, the multi-chuck laser cutting machine includes a base E, a laser cutting assembly B disposed in the middle of the base E, and a plurality of dual-chuck assemblies A as described above disposed sequentially from left to right on the base E. Specifically, a transverse guide rail 1 of the dual-chuck assembly A is fixed to the base E and extends along the length of the base E. The plurality of dual-chuck assemblies A can share a single long transverse guide rail 1.

[0042] To sum up, the double chuck assembly A of the present invention is used in combination with a first chuck assembly 2 having multiple roller clamps 22 and a second chuck assembly 3 having multiple roller clamps 32. It can be overlapped with different positions of the long strip profile from multiple directions as needed, thereby achieving a more secure clamping effect.

[0043] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A double chuck assembly, characterized in that: The invention comprises a transverse guide rail, a first chuck assembly, a second chuck assembly, a first linear drive and a second linear drive; the first chuck assembly is slidably connected to the transverse guide rail via a first slide; the second chuck assembly is slidably connected to the transverse guide rail via a second slide; the output end of the first linear drive is fixedly connected to the first slide; the output end of the second linear drive is fixedly connected to the second slide; The first chuck assembly includes a first chuck body and a plurality of roller clamps arranged on the first chuck body; a first through hole is provided in the middle of the first chuck body; the plurality of roller clamps are circumferentially arranged with the first through hole as the center; The second chuck assembly includes a second chuck body and a plurality of roller clamps arranged on the second chuck body; a second through hole is provided in the middle of the first chuck body; and the plurality of roller clamps are arranged circumferentially with the second through hole as the center; The first chuck body and the second chuck body are coaxially arranged.

2. The double chuck assembly according to claim 1, wherein: A first annular rotating mechanism is provided on the side wall of the first chuck body; a plurality of roller clamps are provided on the first annular rotating mechanism, and the first through hole is located in the middle of the first annular rotating mechanism; a first driving mechanism is provided on the first chuck body, and the first driving mechanism is transmission-connected to the first annular rotating mechanism, for making the first annular rotating mechanism rotate around the first through hole.

3. The double chuck assembly according to claim 1 or 2, characterized in that: A second annular rotating mechanism is provided on the side wall of the second chuck body; a plurality of roller clamps are provided on the second annular rotating mechanism, and the second through hole is located in the middle of the second annular rotating mechanism; a second driving mechanism is provided on the second chuck body, and the second driving mechanism is transmission-connected to the second annular rotating mechanism, for making the second annular rotating mechanism rotate around the second through hole.

4. The double chuck assembly according to claim 3, wherein: The roller clamp includes a first movable bracket and at least one roller arranged on the first movable bracket; a first linear track is arranged on the side wall of the first chuck body, and the first movable bracket is arranged on the first linear track; The roller clamp includes a second movable bracket and at least one support rod arranged on the second movable bracket; the outer end of the support rod is movably connected to the roller; a second linear track is provided on the side wall of the second chuck body, and the second movable bracket is provided on the second linear track.

5. The double chuck assembly according to claim 4, wherein: The second movable bracket is provided with a clamping hole; an elastic member is provided at the bottom of the clamping hole; one end of the support rod is inserted into the clamping hole and abuts against the elastic member; the other end of the support rod is movably connected to the roller.

6. The double chuck assembly according to claim 4, wherein: The roller comprises two oppositely arranged hemispherical wheels; a connecting shaft is provided at the outer end of the support rod; and both ends of the connecting shaft are rotatably connected to the two hemispherical wheels respectively.

7. The double chuck assembly according to claim 5, wherein: The insertion end of the support rod is provided with a protruding structure; the opening of the clamping hole is provided with an annular protrusion, and the annular protrusion is used to limit the protruding structure from escaping from the clamping hole.

8. The double chuck assembly according to claim 4, wherein: There are four roller clamps; each first movable bracket is provided with two rollers; the roller is arranged at one end of the first movable bracket close to the first through hole; there are four roller clamps; each second movable bracket is provided with two roller clamps.

9. A pipe cutting machine, comprising a multi-chuck laser cutting machine, a feeding device and a receiving device, characterized in that: The multi-chuck laser cutting machine is provided with a plurality of dual-chuck assemblies according to any one of claims 1 to 8.

10. The pipe cutting machine according to claim 9, characterized in that The multi-chuck laser cutting machine includes a base, a laser cutting assembly arranged in the middle of the base, and a plurality of dual-chuck assemblies according to any one of claims 1 to 8 arranged on the base in sequence from left to right.

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