Clamping device of laser pipe cutting machine

Abstract

The utility model discloses a laser pipe cutting machine clamping device which comprises a machine frame, a feeding mechanism used for conveying pipes is arranged on the top of the machine frame, a protective shell is installed on the top of the machine frame, and a clamping mechanism used for clamping the pipes is arranged in the protective shell. The clamping mechanism comprises a bearing table, the bearing table is fixedly installed at the top of the rack, a connecting pipe is slidably installed in the bearing table, a material guiding pipe is arranged at one end of the connecting pipe, the other end of the connecting pipe is in threaded connection with a connecting sleeve, and a plurality of elastic clamping blocks which are annularly distributed at equal intervals are arranged on one side of the connecting sleeve; by means of the clamping air cylinder, the connecting frame, the material guiding pipe, the connecting pipe, the elastic clamping block and the conical block, a pipe can be rapidly clamped, the speed is higher than that of a traditional pneumatic chuck, and due to the fact that the inclination angle and the size of the conical block are fixed, the clamping size of the elastic clamping block is fixed, and the situation that the pipe is clamped and deformed cannot occur.

Description

Technical Field

[0001] The utility model relates to the technical field of laser cutting, in particular to a clamping device for a laser pipe cutting machine. Background Technique

[0002] The laser pipe cutting machine irradiates the surface of the pipe with a laser beam with a high energy density, so that the pipe is quickly heated up and melted and vaporized, thereby realizing the precise cutting of the pipe. It has the advantages of high precision, smooth cut and high efficiency, so it has a wide range of applications in industrial production.

[0003] The existing laser pipe cutting machines usually use pneumatic chucks to clamp the pipes. The pneumatic chuck clamping not only has a slow speed, but also easily deforms the pipes, affecting the production efficiency and product quality. Content of the Utility Model

[0004] The purpose of the utility model is to provide a clamping device for a laser pipe cutting machine to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A clamping device for a laser pipe cutting machine, including a frame. A feeding mechanism for conveying pipes is arranged at the top of the frame. A protective shell is installed at the top of the frame, and a clamping mechanism for clamping the pipes is arranged inside the protective shell;

[0006] The clamping mechanism includes a bearing platform. The bearing platform is fixedly installed at the top of the frame. A connecting pipe is slidably installed inside the bearing platform. One end of the connecting pipe is provided with a guide pipe. The other end of the connecting pipe is threadedly connected with a connecting sleeve. A plurality of elastic clamping blocks are arranged on one side of the connecting sleeve in an annular and equally spaced manner. There is a gap between adjacent elastic clamping blocks, and a conical block is arranged on the outer side of the elastic clamping block. One side of the bearing platform is fixedly connected with a guiding sleeve. The inner side wall of the guiding sleeve is provided with an inner conical surface that matches the conical block. A connecting frame is fixedly connected to the outer side of the guide pipe. A support plate is fixedly connected to the top of the bearing platform. A clamping cylinder is rotatably installed at the bottom of the support plate. The output end of the clamping cylinder is hinged to the connecting frame. A limiting block is fixedly connected to the outer side of the bearing platform. A sliding groove is arranged on one side of the connecting frame. The connecting frame is slidably connected with the limiting block through the sliding groove.

[0007] As a preferred scheme of the utility model, an external thread is arranged on the outer side of the connecting sleeve, and an internal thread that matches the external thread is arranged on the inner side wall of the connecting pipe.

[0008] As a preferred scheme of the utility model, both the connecting sleeve and the elastic clamping blocks are slidably connected with the guiding sleeve.

[0009] As a preferred embodiment of the present utility model, the feeding mechanism includes two guide rails which are fixed to the top of the frame. Symmetrically slidably connected to the outer sides of the two guide rails are sliders. A main material plate and a secondary material plate are respectively fixedly connected between the laterally adjacent sliders. Symmetrically rotatably mounted on the secondary material plate are driven shafts. At the tops of the two driven shafts are driven feeding wheels. Symmetrically rotatably mounted on the two main material plates are driving shafts. Fixedly connected to the tops of the two driving shafts are driving feeding wheels. Fixedly connected to the top of the main material plate is a bracket. Mounted on the bracket is a servo motor. The output end of the servo motor is connected to one of the driving shafts. Fixedly connected to the bottoms of the two driving shafts are synchronous pulleys. A synchronous belt is sleeved outside the two synchronous pulleys. Mounted at the bottom of the main material plate is a pressure wheel. Fixedly connected to the top of the frame is an L-shaped plate. Mounted on the L-shaped plate is an adjusting cylinder. The output end of the adjusting cylinder is connected to the secondary material plate. Fixedly connected to one end of the L-shaped plate is an extension plate. Rotatably mounted on the extension plate through a rotating shaft is a gear. Fixedly connected to the bottoms of both the main material plate and the secondary material plate are racks meshing with the gear.

[0010] As a preferred embodiment of the present utility model, a wrap is provided on the outside of the driving feeding wheel.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model can quickly clamp a pipe through the provided clamping cylinder, connection frame, guide pipe, connecting pipe, elastic clamping block and tapered block, and the speed is faster than that of the traditional pneumatic chuck. And due to the fixed inclination angle and size of the tapered block, the elastic clamping block has a fixed clamping size, and the situation of deforming the pipe by clamping will not occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0013] Figure 2 is a structural schematic diagram of the clamping mechanism of the present utility model;

[0014] Figure 3 is a structural schematic diagram of the clamping mechanism of the present utility model from another perspective;

[0015] Figure 4 is a structural schematic diagram of the elastic clamping block of the present utility model;

[0016] Figure 5 is a structural schematic diagram of the guiding sleeve of the present utility model;

[0017] Figure 6 is a structural schematic diagram of the guide pipe and the connecting pipe of the present utility model;

[0018] Figure 7 is a structural schematic diagram of the feeding mechanism of the present utility model;

[0019] Figure 8 This is a schematic structural view of the rear side of the feeding mechanism of the present utility model;

[0020] Figure 9 This is a schematic structural view of the bottom of the feeding mechanism of the present utility model.

[0021] In the figure: 1, frame; 2, protective housing;

[0022] 3, clamping mechanism; 31, bearing table; 32, support plate; 33, connecting frame; 34, guide pipe; 35, chute; 36, limit block; 37, guiding sleeve; 38, elastic clamping block; 39, clamping cylinder; 310, conical block; 311, gap; 312, connecting sleeve; 313, external thread; 314, inner conical surface; 315, internal thread; 316, connecting pipe;

[0023] 4, feeding mechanism; 41, guide rail; 42, slider; 43, main material plate; 44, secondary material plate; 45, driven feeding wheel; 46, driven shaft; 47, driving feeding wheel; 48, edge wrapping; 49, servo motor; 410, bracket; 411, adjusting cylinder; 412, L-shaped plate; 413, synchronous pulley; 414, synchronous belt; 415, pressing wheel; 416, rack; 417, extension plate; 418, gear; 419, driving shaft. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1 to 9 , the present utility model provides a technical solution: a clamping device for a laser pipe cutting machine, including a frame 1, a feeding mechanism 4 for conveying pipes is provided on the top of the frame 1, a protective housing 2 is installed on the top of the frame 1, the protective housing 2 is used to protect the clamping mechanism 3, and a clamping mechanism 3 for clamping pipes is provided inside the protective housing 2;

[0026] The clamping mechanism 3 includes a bearing platform 31. The bearing platform 31 is fixedly installed on the top of the frame 1. A connecting pipe 316 is slidably installed inside the bearing platform 31. One end of the connecting pipe 316 is provided with a material guiding pipe 34. The other end of the connecting pipe 316 is threadedly connected with a connecting sleeve 312. One side of the connecting sleeve 312 is provided with a plurality of elastic clamping blocks 38 that are evenly distributed in a ring shape at equal intervals. There is a gap 311 between adjacent elastic clamping blocks 38. And a tapered block 310 is provided on the outer side of the elastic clamping block 38. One side of the bearing platform 31 is fixedly connected with a guiding sleeve 37. The inner side wall of the guiding sleeve 37 is provided with an inner conical surface 314 that cooperates with the tapered block 310. The inner conical surface 314 makes the plurality of elastic clamping blocks 38 approach each other through the tapered block 310, thereby realizing the clamping of the pipe. The outer side of the material guiding pipe 34 is fixedly connected with a connecting frame 33. The top of the bearing platform 31 is fixedly connected with a support plate 32. A clamping cylinder 39 is rotatably installed at the bottom of the support plate 32. When the clamping cylinder 39 extends, the clamping cylinder 39 makes the connecting frame 33 move away from the bearing platform 31. The connecting frame 33 makes the material guiding pipe 34 move. The material guiding pipe 34 drives the connecting pipe 316 to move. The connecting pipe 316 makes the elastic clamping blocks 38 move towards the material guiding pipe 34 through the connecting sleeve 312. The tapered block 310 abuts against the inner conical surface 314 and is extruded and moved by the inner conical surface 314, so that the elastic clamping blocks 38 approach each other and move, thereby clamping the pipe. Since the inclination angle and size of the tapered block 310 are fixed, the clamping size of the elastic clamping blocks 38 is fixed, and the pipe will not be deformed by clamping. At the same time, when clamping, the clamping cylinder 39 directly drives the elastic clamping blocks 38 to move and clamp through the connecting frame 33, the material guiding pipe 34 and the connecting pipe 316. There is no complex transmission structure, and the clamping speed is faster than that of traditional pneumatic chucks. The output end of the clamping cylinder 39 is hinged to the connecting frame 33 to prevent the clamping cylinder 39 from being stuck and unable to move. The outside of the bearing platform 31 is fixedly connected with a limiting block 36. One side of the connecting frame 33 is provided with a sliding groove 35. The connecting frame 33 is slidably connected with the limiting block 36 through the sliding groove 35. The sliding groove 35 and the limiting block 36 cooperate to guide the connecting frame 33 and prevent the connecting frame 33 from shifting during movement.

[0027] Wherein, an external thread 313 is provided on the outer side of the connecting sleeve 312, and an internal thread 315 that cooperates with the external thread 313 is provided on the inner side wall of the connecting pipe 316. The connecting sleeve 312 is threadedly connected with the connecting pipe 316 through the cooperation of the external thread 313 and the internal thread 315.

[0028] Wherein, both the connecting sleeve 312 and the elastic clamping blocks 38 are slidably connected with the guiding sleeve 37.

[0029] Among them, the feeding mechanism 4 includes two guide rails 41. The two guide rails 41 are fixed on the top of the frame 1. Sliders 42 are symmetrically and slidably connected to the outer sides of the two guide rails 41. The cooperation between the sliders 42 and the guide rails 41 makes the movement of the sub-material plate 44 and the main material plate 43 more stable, preventing them from shifting. The main material plate 43 and the sub-material plate 44 are respectively and fixedly connected between laterally adjacent sliders 42. Driven shafts 46 are symmetrically and rotatably installed on the sub-material plate 44. Driven feeding wheels 45 are arranged at the tops of the two driven shafts 46. Driving shafts 419 are symmetrically and rotatably installed on the two main material plates 43. Driving feeding wheels 47 are fixedly connected to the tops of the two driving shafts 419. A bracket 410 is fixedly connected to the top of the main material plate 43. A servo motor 49 is installed on the bracket 410. The servo motor 49 rotates one of the driving shafts 419. The driving shaft 419 rotates the synchronous pulley 413. The synchronous pulley 413 rotates another synchronous pulley 413 through a synchronous belt 414. The synchronous pulley 413 rotates another driving shaft 419, so that the two driving shafts 419 rotate simultaneously. The two driving shafts 419 rotate the two driving feeding wheels 47. The rotation of the driving feeding wheels 47 conveys the pipe. The output end of the servo motor 49 is connected to one of the driving shafts 419. Synchronous pulleys 413 are fixedly connected to the bottoms of the two driving shafts 419. A synchronous belt 414 is sleeved on the outer sides of the two synchronous pulleys 413. A pressure wheel 415 is installed at the bottom of the main material plate 43. The pressure wheel 415 is used to press the synchronous belt 414 to prevent slipping between the synchronous belt 414 and the synchronous pulley 413. An L-shaped plate 412 is fixedly connected to the top of the frame 1. The L-shaped plate 412 makes the sub-material plate 44 move. The sub-material plate 44 drives the rack 416 to move. The rack 416 rotates the gear 418. The gear 418 makes another rack 416 move. The rack 416 makes the main material plate 43 move, so that the main material plate 43 and the sub-material plate 44 approach or separate. The main material plate 43 and the sub-material plate 44 respectively drive the driving feeding wheels 47 and the driven feeding wheels 45 to move. The driving feeding wheels 47 and the driven feeding wheels 45 approach and clamp the pipe, so as to facilitate the conveyance of the pipe by the driving feeding wheels 47 and the driven feeding wheels 45. And the driving feeding wheels 47 and the driven feeding wheels 45 approach and clamp the pipe through the cooperation of the rack 416 and the gear 418, so that there will be no eccentricity. An adjusting cylinder 411 is installed on the L-shaped plate 412. The output end of the adjusting cylinder 411 is connected to the sub-material plate 44. An extension plate 417 is fixedly connected to one end of the L-shaped plate 412. A gear 418 is rotatably installed on the extension plate 417 through a rotating shaft. Racks 416 meshing with the gear 418 are fixedly connected to the bottoms of the main material plate 43 and the sub-material plate 44 respectively.

[0030] Among them, a wrap 48 is arranged on the outer side of the driving feeding wheel 47. The wrap 48 is made of wear-resistant fabric, which can increase the feeding stability of the driving feeding wheel 47, reduce the wear of the driving feeding wheel 47, and extend its service life.

[0031] Specifically, during use, an external feeding device conveys the pipe to between the active feeding wheel 47 and the driven feeding wheel 45. The adjusting cylinder 411 extends to move the secondary material plate 44 towards the pipe. The secondary material plate 44 drives the rack 416 to move. The rack 416 rotates the gear 418. The gear 418 moves another rack 416. The rack 416 also moves the main material plate 43 towards the pipe, thereby clamping the pipe between the active feeding wheel 47 and the driven feeding wheel 45. Subsequently, the servo motor 49 rotates the main shaft 419. The main shaft 419 rotates the synchronous pulley 413. The synchronous pulley 413 rotates another synchronous pulley 413 through the synchronous belt 414. The synchronous pulley 413 rotates another main shaft 419, so that the two main shafts 419 rotate simultaneously. The two main shafts 419 drive the two active feeding wheels 47 to rotate. The active feeding wheels 47 rotate to convey the pipe. The pipe is conveyed into the guide pipe 34. The pipe sequentially passes through the guide pipe 34, the connecting pipe 316, the connecting sleeve 312, and the elastic clamping block 38 and then extends outside the elastic clamping block 38. After extending to an appropriate length, the clamping cylinder 39 extends. The clamping cylinder 39 moves the connecting frame 33 away from the bearing platform 31. The connecting frame 33 moves the guide pipe 34. The guide pipe 34 drives the connecting pipe 316 to move. The connecting pipe 316 moves the elastic clamping block 38 towards the guide pipe 34 through the connecting sleeve 312. The conical block 310 abuts against the inner conical surface 314 and is extruded and moved by the inner conical surface 314, causing the plurality of elastic clamping blocks 38 to move closer to each other, thereby clamping the pipe. Subsequently, the pipe can be cut.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0033] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", "fourth" may explicitly or implicitly include at least one of such features.

[0034] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection" and the like shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A clamping device for a laser tube cutting machine, comprising a frame (1), characterized in that: A feeding mechanism (4) for conveying pipes is provided on the top of the frame (1), a protective shell (2) is installed on the top of the frame (1), and a clamping mechanism (3) for clamping pipes is provided inside the protective shell (2); The clamping mechanism (3) comprises a bearing platform (31), wherein the bearing platform (31) is fixedly mounted on the top of the frame (1), a connecting pipe (316) is slidably mounted inside the bearing platform (31), one end of the connecting pipe (316) is provided with a material guide pipe (34), the other end of the connecting pipe (316) is threadedly connected with a connecting sleeve (312), one side of the connecting sleeve (312) is provided with a plurality of elastic clamping blocks (38) distributed in an annular shape and at equal intervals, gaps (311) are provided between adjacent elastic clamping blocks (38), and a conical block (310) is provided on the outer side of the elastic clamping block (38), and one side of the bearing platform (31) is fixedly connected with a guide pipe (34). A guide sleeve (37), the inner side wall of which is provided with an inner conical surface (314) matching with the conical block (310), the outer side of the guide tube (34) is fixedly connected with a connecting frame (33), the top of the bearing platform (31) is fixedly connected with a support plate (32), the bottom of the support plate (32) is rotatably mounted with a clamping cylinder (39), the output end of the clamping cylinder (39) is hinged with the connecting frame (33), the outer side of the bearing platform (31) is fixedly connected with a limiting block (36), a sliding groove (35) is provided on one side of the connecting frame (33), and the connecting frame (33) is slidably connected with the limiting block (36) through the sliding groove (35).

2. A clamping device for a laser tube cutting machine according to claim 1, characterized in that: The outer side of the connecting sleeve (312) is provided with an external thread (313), and the inner side wall of the connecting pipe (316) is provided with an internal thread (315) matching with the external thread (313).

3. The clamping device for a laser tube cutting machine according to claim 1, characterized in that: The connecting sleeve (312) and the elastic clamping block (38) are both slidably connected to the guide sleeve (37).

4. The clamping device for a laser tube cutting machine according to claim 1, characterized in that: The feeding mechanism (4) comprises two guide rails (41), the two guide rails (41) are fixed on the top of the frame (1), the outer sides of the two guide rails (41) are symmetrically slidably connected with sliders (42), the main material plate (43) and the slave material plate (44) are respectively fixedly connected between the sliders (42) adjacent to each other in the transverse direction, the slave material plate (44) is symmetrically rotatably mounted with a driven shaft (46), the tops of the two driven shafts (46) are provided with a driven feeding wheel (45), the two main material plates (43) are symmetrically rotatably mounted with a driving shaft (419), the tops of the two driving shafts (419) are fixedly connected with a driving feeding wheel (47), the top of the main material plate (43) is fixedly connected with a bracket (410), the bracket (410) is mounted with a servo motor (49), the servo motor (49) The output end is connected to one of the driving shafts (419), the bottoms of the two driving shafts (419) are fixedly connected with synchronous wheels (413), the outer sides of the two synchronous wheels (413) are sleeved with synchronous belts (414), the bottom of the main material plate (43) is equipped with a pressure wheel (415), the top of the frame (1) is fixedly connected with an L-shaped plate (412), an adjusting cylinder (411) is installed on the L-shaped plate (412), the output end of the adjusting cylinder (411) is connected to the slave material plate (44), one end of the L-shaped plate (412) is fixedly connected with an extension plate (417), a gear (418) is rotatably installed on the extension plate (417) through a rotating shaft, and the bottoms of the main material plate (43) and the slave material plate (44) are both fixedly connected with a rack (416) meshing with the gear (418).

5. The clamping device for a laser tube cutting machine according to claim 4, characterized in that: The outer side of the active feeding wheel (47) is provided with an edge (48).

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