Beam structure of laser cutting machine

Abstract

According to the technical scheme, the beam structure of the laser cutting machine is characterized in that the beam structure comprises a support, a beam is fixedly connected to the support, the beam is connected with a lifting mechanism, the lifting mechanism comprises a first rack and a moving part, and the moving part is in meshed connection with a screw in meshed connection with the first rack; the first rack is connected with a moving platform used for installing a laser cutting head, a dismounting mechanism used for twisting a screw is arranged at the bottom of the lifting mechanism, a conveying mechanism used for replacing the first rack is arranged on the side face of the lifting mechanism, and the cross beam is further fixedly connected with a second rack spliced with the first rack. Through the combined action of the lifting mechanism, the dismounting mechanism and the conveying mechanism, the first rack is automatically replaced in the cross beam, and compared with the mode that the first rack is manually dismounted from the outside and replaced, the device is faster, more convenient and safer.

Description

Technical Field

[0001] The utility model relates to a crossbeam structure, more specifically, it relates to a crossbeam structure of a laser cutting machine. Background Art

[0002] The beam structure is an indispensable component of the laser cutting machine. However, with the continuous development of laser cutting, the laser cutting machines on the market are gradually subdivided into various laser cutting machines with special functions. Therefore, laser cutting machines for different laser cutting operations have different structures. Among them, laser cutting machines used for rough laser cutting operations are more common in assembly lines. This type of laser cutting machine usually has low requirements for precision, but high requirements for cutting speed. Therefore, the rack used to move the laser cutting head wears out faster and needs to be replaced frequently. Therefore, a laser cutting machine beam structure that can automatically replace the rack is needed.

[0003] In view of the above reasons, how to automatically replace the rack is exactly the problem considered in this application. Utility Model Content

[0004] In view of the shortcomings of the prior art, a laser cutting machine crossbeam structure is provided, which can automatically replace the rack.

[0005] To achieve the above-mentioned purpose, the following technical scheme is provided: a crossbeam structure of a laser cutting machine, comprising a bracket, a crossbeam fixedly connected to the bracket, a lifting mechanism connected to the crossbeam, the lifting mechanism comprising a first rack and a moving part, the moving part meshingly connected with a screw meshingly connected with the first rack, the first rack connected with a moving platform for installing a laser cutting head, a disassembly mechanism for twisting the screw is provided at the bottom of the lifting mechanism, a transport mechanism for replacing the first rack is provided at the side of the lifting mechanism, and the crossbeam is also fixedly connected with a second rack spliced ​​with the first rack;

[0006] When the lifting mechanism drives the first rack to move up and down, the moving platform stops on the second rack.

[0007] In summary, the above technical solution has the following beneficial effects: the first rack is the main moving area of ​​the laser cutting head during laser cutting operation. Since the gears on the mobile platform are rotated so that the tooth walls collide with each other, and the precision requirement in rough processing is not high, the first rack is more easily worn than the gears in design and is a low-cost consumable.

[0008] When the first rack needs to be replaced, the mobile platform will stop on the second rack, so that the gears of the mobile platform are always in meshing state and no additional rotation will be generated, which can prevent the situation that the first rack cannot be meshed with the first rack after the first rack is replaced. In addition, a deceleration mechanism can be installed to force the mobile platform to decelerate when approaching the second rack to prevent the mobile platform from hitting the beam and the bracket;

[0009] When the moving part in the lifting mechanism drives the first rack to descend to the bottom under the action of the screw, the disassembling mechanism will twist the screw to separate the moving part from the first rack, and the old first rack will be pushed out by the new first rack on the transport mechanism. After the new first rack enters the predetermined position, the disassembling mechanism will twist the screw again to connect the moving part with the first rack, and then the lifting mechanism will drive the new first rack to rise and splice with the second rack, thereby completing an automatic rack replacement operation;

[0010] The utility model automatically replaces the first rack inside the crossbeam through the cooperation of the lifting mechanism, the disassembling mechanism and the transporting mechanism. Compared with the method of manually disassembling and replacing the first rack from the outside, the utility model is faster, more convenient and safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of a beam structure of a laser cutting machine;

[0012] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0013] Figure 3 It is a cross-sectional view of the first protective cover in the utility model;

[0014] Figure 4 It is a cross-sectional view of the utility model;

[0015] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0016] Reference numerals: 1, bracket; 2, crossbeam; 3, lifting mechanism; 4, moving platform; 5, disassembly mechanism; 6, transportation mechanism; 7, second rack; 8, button; 9, collection bin;

[0017] 11. first motor; 12. first protective cover; 13. second motor; 14. third motor;

[0018] 21. Storage space; 22. Accommodation space;

[0019] 31. first rack; 32. moving part; 33. screw; 34. first transmission shaft;

[0020] 321, first connecting member; 322, first roller; 323, first track; 324, second connecting member; 325, second track;

[0021] 341, first synchronous wheel; 342, synchronous belt; 343, second transmission shaft; 345, second synchronous wheel;

[0022] 51. Screwdriver; 52. Threaded rod; 53. Threaded sleeve; 54. Third transmission shaft; 55. Fourth transmission shaft; 56. Gear assembly;

[0023] 561, first bevel gear; 562, second bevel gear; 563, connecting shaft; 564, third bevel gear; 565, fourth bevel gear; 566, supporting frame;

[0024] 61. The third connecting member; 62. The steel rope; 63. The pulley; 64. The second roller; 65. The third track. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0026] Reference Figure 1-5 As shown, a beam structure of a laser cutting machine includes a bracket 1, a beam 2 is fixedly connected to the bracket 1, a lifting mechanism 3 is connected to the beam 2, the lifting mechanism 3 includes a first rack 31 and a moving member 32, the moving member 32 is meshedly connected with a screw 33 meshedly connected with the first rack 31, the first rack 31 is connected with a moving platform 4 for installing a laser cutting head, a disassembly mechanism 5 for twisting the screw 33 is provided at the bottom of the lifting mechanism 3, a transport mechanism 6 for replacing the first rack 31 is provided on the side of the lifting mechanism 3, and the beam 2 is also fixedly connected with a second rack 7 spliced ​​with the first rack 31;

[0027] When the lifting mechanism 3 drives the first rack 31 to move up and down, the moving platform 4 stops at the second rack 7;

[0028] The first rack 31 is the main moving area of ​​the laser cutting head during the laser cutting operation. Since the gears on the mobile platform 4 are rotated so that the tooth walls collide with each other, and the precision requirement in rough processing is not high, the first rack 31 is more easily worn than the gears in design and is a low-cost consumable.

[0029] When the first rack 31 needs to be replaced, the mobile platform 4 will stop on the second rack 7, so that the gears of the mobile platform 4 are always in meshing state, and no additional rotation will be generated, which can prevent the situation that the first rack 31 cannot be meshed with the first rack 31 after the first rack 31 is replaced. In addition, a deceleration mechanism can be installed to force the mobile platform 4 to decelerate when it approaches the second rack 7, so as to prevent the mobile platform 4 from hitting the beam 2 and the bracket 1;

[0030] When the moving member 32 in the lifting mechanism 3 drives the first rack 31 to descend to the bottom under the action of the screw 33, the disassembling mechanism 5 will twist the screw 33 to separate the moving member 32 from the first rack 31, and the old first rack 31 will be pushed out by the new first rack 31 on the transporting mechanism 6. After the new first rack 31 enters the predetermined position, the disassembling mechanism 5 will twist the screw 33 again to connect the moving member 32 with the first rack 31, and then the lifting mechanism 3 drives the new first rack 31 to rise and splice with the second rack 7, thereby completing an automatic rack replacement operation;

[0031] The utility model automatically replaces the first rack 31 inside the crossbeam 2 through the cooperation of the lifting mechanism 3, the disassembly mechanism 5 and the transportation mechanism 6. Compared with the method of manually disassembling and replacing the first rack 31 from the outside, it is faster, more convenient and safer.

[0032] Further, the side of the bracket 1 is also fixedly connected to a first motor 11 and a first protective cover 12 for protecting the first motor 11, the lifting mechanism 3 also includes a first transmission shaft 34 connected to the first motor 11, the first transmission shaft 34 is fixedly connected to a first synchronous wheel 341, the first synchronous wheel 341 is connected to a synchronous belt 342, the first protective cover 12 is rotatably connected to a second transmission shaft 343, the second transmission shaft 343 is fixedly connected to a second synchronous wheel 345 connected to the synchronous belt 342, and the moving member 32 is also fixedly connected to a first connecting member 321 fixedly connected to the synchronous belt 342;

[0033] When the first motor 11 is started, the first synchronous wheel 341 is driven to rotate by the rotating first transmission shaft 34, and any fixed point of the synchronous belt 342 can move up and down with the rotation of the first synchronous wheel 341. At this time, the second transmission shaft 343 and the second synchronous wheel 345 are used to support and maintain the tautness of the synchronous belt 342 to prevent the moving part 32 on the synchronous belt 342 from shaking and affecting the laser cutting operation. The first motor 11 can drive the first connecting part 321 to move up and down by rotating in both directions, thereby achieving the purpose of driving the moving part 32 and the first rack 31 to move up and down together.

[0034] Furthermore, the first connecting member 321 is rotatably connected to a first roller 322 on a side away from the synchronous belt 342, and the first protective cover 12 is further provided with a first track 323 for limiting the moving direction of the first roller 322, and the extending direction of the first track 323 is consistent with the setting direction of the synchronous belt 342;

[0035] The first connecting member 321 is also fixedly connected to a second connecting member 324 disposed in the middle of the first connecting member 321. The first protective cover 12 is also provided with a second track 325 for limiting the moving direction of the second connecting member 324. The extending direction of the second track 325 is consistent with the direction in which the synchronous belt 342 is set.

[0036] Since the movable member 32 is fixedly connected in the middle of the first connecting member 321, and one side of the first connecting member 321 is fixedly connected to the synchronous belt 342, in order to ensure that the movable member 32 can be maintained in a horizontal direction, rollers are provided to cooperate with the first track 323 and the second connecting member 324 to cooperate with the second track 325. This can prevent the movable member 32 from tilting forward or sideways during the up and down movement, while maintaining the stability of the first rack 31 during laser cutting operations.

[0037] Further, the disassembly mechanism 5 includes a screwdriver 51 for twisting the screw 33, the screwdriver 51 is fixedly connected to a threaded rod 52, the threaded rod 52 is meshedly connected to a threaded sleeve 53, the threaded sleeve 53 is fixedly connected to a third transmission shaft 54 ​​rotatably connected to the crossbeam 2, the bracket 1 is also fixedly connected to a second motor 13, the second motor 13 is connected to a fourth transmission shaft 55, and the third transmission shaft 54 ​​is connected to a gear assembly 56 connected to the fourth transmission shaft 55;

[0038] The gear assembly 56 includes a first bevel gear 561 fixedly connected to the fourth transmission shaft 55, the first bevel gear 561 is meshedly connected to the second bevel gear 562, the second bevel gear 562 is fixedly connected to the connecting shaft 563, the connecting shaft 563 is fixedly connected to the third bevel gear 564, meshedly connected to the fourth bevel gear 565 fixedly connected to the third transmission shaft 54, and the connecting shaft 563 is also rotatably connected to a support frame 566 fixedly connected to the crossbeam 2;

[0039] The disassembly mechanism 5 mainly disassembles the moving part 32 and the first rack 31 by twisting the screw 33. When the second motor 13 rotates, the fourth transmission shaft 55 is driven to rotate. The multiple bevel gears of the gear assembly 56 are used to change the rotation direction, so that the third transmission shaft 54 ​​can rotate. When the third transmission shaft 54 ​​rotates, the threaded sleeve 53 is driven to rotate. Since the relative position of the threaded sleeve 53 is fixed and the screwdriver 51 is plugged into the screw 33, the threaded rod 52 is pressed downward, and there is a large friction between the threads of the threaded rod 52 and the threads of the threaded sleeve 53. Therefore, the threaded sleeve 53 will preferentially drive the threaded rod 52. The first movable member 32 does not move, so the screw 33 approaches the threaded sleeve 53 under the action of the thread, and the threaded rod 52 is forced to move downward along the thread. The pressure between the thread of the threaded rod 52 and the thread of the threaded sleeve 53 is reduced, and the friction force is also reduced, but the pressure is increased under the pressure of the screw 33 and the screwdriver 51 which are also moving downward, and then the friction force reappears. This process is repeated continuously, so that the threaded rod 52 can both rotate and move up and down. Conversely, the same is true for the installation movable member 32 and the first rack 31.

[0040] Furthermore, the crossbeam 2 is provided with a storage space 21 for arranging the first rack 31 for replacement and a receiving space 22 provided below the storage space 21, the transport mechanism 6 includes a third connecting member 61 for pushing the first rack 31, the third connecting member 61 connects the storage space 21 and the receiving space 22, the bracket 1 is also fixedly connected to the third motor 14, the third connecting member 61 is fixedly connected to the steel rope 62 connected to the third motor 14, and a pulley 63 is provided in the receiving space 22, which is rotatably connected to the crossbeam 2 and used to change the extension direction of the steel rope 62;

[0041] The third connecting member 61 is also rotatably connected to a second roller 64, and the accommodating space 22 is also provided with a third track 65 for limiting the moving direction of the second roller 64;

[0042] When the third motor 14 is started, it can pull the third connecting member 61 to move, so that the third connecting member 61 pushes the arranged multiple first racks 31, and then pushes away the old first racks 31, and automatically replaces the new first racks 31.

[0043] Furthermore, a button 8 electrically connected to the disassembly mechanism 5 and the transportation mechanism 6 is also provided at the bottom of the storage space 21;

[0044] When the moving member 32 moves to the bottom, the moving member 32 contacts the button 8, and the disassembly mechanism 5 and the transport mechanism 6 are started in sequence;

[0045] When and only when the moving member 32 moves to the bottom, the procedure of replacing the first rack 31 needs to be started. Therefore, in order to prevent waste caused by wrong start, the button 8 is set as a safety.

[0046] Furthermore, the crossbeam 2 is also fixedly connected with a collecting bin 9 for collecting the first rack 31 , thereby preventing the old first rack 31 from falling into the assembly line and facilitating subsequent cleaning.

[0047] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A beam structure of a laser cutting machine, characterized in that: The invention comprises a bracket (1), a crossbeam (2) fixedly connected to the bracket (1), a lifting mechanism (3) connected to the crossbeam (2), the lifting mechanism (3) comprising a first rack (31) and a moving part (32), the moving part (32) meshingly connected to a screw (33) meshingly connected to the first rack (31), the first rack (31) being connected to a moving platform (4) for mounting a laser cutting head, a disassembly mechanism (5) for twisting the screw (33) being provided at the bottom of the lifting mechanism (3), a transport mechanism (6) for replacing the first rack (31) being provided at the side of the lifting mechanism (3), and the crossbeam (2) being further fixedly connected to a second rack (7) spliced ​​with the first rack (31).

2. A laser cutting machine beam structure according to claim 1, characterized in that: The side of the bracket (1) is also fixedly connected to a first motor (11) and a first protective cover (12) for protecting the first motor (11); the lifting mechanism (3) also includes a first transmission shaft (34) connected to the first motor (11); the first transmission shaft (34) is fixedly connected to a first synchronous wheel (341); the first synchronous wheel (341) is connected to a synchronous belt (342); the first protective cover (12) is rotatably connected to a second transmission shaft (343); the second transmission shaft (343) is fixedly connected to a second synchronous wheel (345) connected to the synchronous belt (342); and the moving member (32) is also fixedly connected to a first connecting member (321) fixedly connected to the synchronous belt (342).

3. A laser cutting machine beam structure according to claim 2, characterized in that: The first connecting member (321) is also rotatably connected to a first roller (322) on a side away from the synchronous belt (342); the first protective cover (12) is also provided with a first track (323) for limiting the moving direction of the first roller (322); the extension direction of the first track (323) is consistent with the setting direction of the synchronous belt (342).

4. A laser cutting machine beam structure according to claim 3, characterized in that: The first connecting member (321) is also fixedly connected to a second connecting member (324) arranged in the middle of the first connecting member (321), and the first protective cover (12) is also provided with a second track (325) for limiting the moving direction of the second connecting member (324), and the extension direction of the second track (325) is consistent with the setting direction of the synchronous belt (342).

5. The crossbeam structure of a laser cutting machine according to claim 1, characterized in that: The disassembly mechanism (5) comprises a screwdriver (51) for twisting the screw (33), the screwdriver (51) being fixedly connected to a threaded rod (52), the threaded rod (52) being meshingly connected to a threaded sleeve (53), the threaded sleeve (53) being fixedly connected to a third transmission shaft (54) rotatably connected to the crossbeam (2), the bracket (1) being further fixedly connected to a second motor (13), the second motor (13) being connected to a fourth transmission shaft (55), the third transmission shaft (54) being connected to a gear assembly (56) connected to the fourth transmission shaft (55).

6. A laser cutting machine beam structure according to claim 5, characterized in that: The gear assembly (56) comprises a first bevel gear (561) fixedly connected to a fourth transmission shaft (55); the first bevel gear (561) is meshingly connected to a second bevel gear (562); the second bevel gear (562) is fixedly connected to a connecting shaft (563); the connecting shaft (563) is fixedly connected to a third bevel gear (564); the connecting shaft (563) is meshingly connected to a fourth bevel gear (565) fixedly connected to the third transmission shaft (54); the connecting shaft (563) is also rotatably connected to a support frame (566) fixedly connected to the crossbeam (2).

7. The crossbeam structure of a laser cutting machine according to claim 1, characterized in that: The crossbeam (2) is also provided with a storage space (21) for arranging and replacing the first rack (31) and a receiving space (22) provided below the storage space (21); the transport mechanism (6) includes a third connecting member (61) for pushing the first rack (31); the third connecting member (61) connects the storage space (21) and the receiving space (22); the bracket (1) is also fixedly connected to a third motor (14); the third connecting member (61) is fixedly connected to a steel rope (62) connected to the third motor (14); and a pulley (63) is provided in the receiving space (22) and is rotatably connected to the crossbeam (2) and is used to change the extension direction of the steel rope (62).

8. A laser cutting machine beam structure according to claim 7, characterized in that: The third connecting member (61) is also rotatably connected to a second roller (64), and the accommodating space (22) is also provided with a third track (65) for limiting the moving direction of the second roller (64).

9. The crossbeam structure of a laser cutting machine according to claim 7, characterized in that: A button (8) electrically connected to the disassembly mechanism (5) and the transportation mechanism (6) is also provided at the bottom of the storage space (21).

10. The crossbeam structure of a laser cutting machine according to claim 1, characterized in that: The crossbeam (2) is also fixedly connected with a collection bin (9) for collecting the first rack (31).

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