A laser drilling device for cigarette tipping paper

Abstract

The present invention belongs to the technical field of laser processing, and particularly relates to a laser punching device for cigarette tipping paper, which comprises a mounting plate, on which an arc-shaped first slide and a second slide are arranged; a plurality of laser punching components are slidably arranged on the first slide, and a plurality of roller components are slidably arranged on the second slide. The laser punching components and the roller components are arranged staggeredly in sequence, and adjacent laser punching components and rollers are sequentially hinged and linked through connecting rods; a driving mechanism is further included, which is used to drive the first slide and the second slide to approach or move away from each other, so as to synchronously adjust the positions of a plurality of laser punching components on the second slide and synchronously adjust the positions of a plurality of roller components on the first slide. Through the linkage type adjusting mechanism, the positions of a plurality of roller components and laser punching components are synchronously adjusted, thereby simplifying the installation and debugging steps, greatly improving the installation accuracy of the laser head, and ensuring the punching quality.

Description

Technical Field

[0001] The invention belongs to the technical field of laser processing, and in particular relates to a laser punching device for cigarette tipping paper. Background Art

[0002] Laser drilling is a process that uses high-energy laser beams to create holes. It is widely used in the processing of plastics, paper and other materials. Laser drilling mainly uses the high power density and high spatial coherence of laser radiation to focus and heat the paper, so that the paper reaches the vaporization temperature locally and vaporizes into holes. The use of laser drilling for cigarette tipping paper is becoming more and more common in the tobacco industry.

[0003] When choosing the laser head arrangement for cigarette tipping paper laser drilling equipment, the best solution is usually determined based on the specific requirements of the product (such as hole shape, arrangement complexity, production efficiency, etc.). The horizontal arrangement of several laser heads is suitable for standardized production to ensure fast and consistent hole formation; while the arrangement of several laser heads in a certain arc is more suitable for designing products with varied and complex shapes to meet the market's demand for cigarette tipping paper in terms of functionality and aesthetics.

[0004] When the laser head is arranged in an arc shape, the position accuracy of the laser head is very high, and it is necessary to ensure that the laser head is facing the tipping paper on the roller. Once the laser head of the laser drilling device is installed, its position cannot be changed. When there is an installation error in the parts, it is easy to cause the position accuracy of the laser head to fail to meet the requirements, thereby affecting the quality of the drilling; especially in the installation and debugging stage, the distance between the laser head and the tipping paper will be adjusted. When facing multiple laser heads arranged in an arc shape, it is difficult to ensure that the position accuracy of multiple laser heads meets the requirements, and the operator's experience is required to be high. In addition, the laser will generate dust when drilling and waste will fall after the tipping paper is punched. If these dust and waste are not cleaned in time, they will accumulate on the laser head and the drilling table. Excessive accumulation for a long time will cause the roller to roll poorly, thereby affecting the drilling quality of the laser drilling machine; and the dust particles accumulated on the drilling table, the tipping paper will produce sliding friction with the platform during the transmission process, which will inevitably scratch the surface pattern of the tipping paper, thereby affecting the quality of the tipping paper surface, and eventually become defective. Summary of the invention

[0005] In view of the technical problems existing in the background technology, the present invention provides a laser punching device for cigarette tipping paper.

[0006] To achieve the above purpose, the technical solution provided by the present invention is:

[0007] A cigarette tipping paper laser drilling device includes a mounting plate, a laser drilling assembly and a roller assembly. The mounting plate is provided with an arc-shaped first sliding frame and a second sliding frame at a fixed distance from bottom to top. A plurality of laser drilling assemblies are slidably arranged on the first sliding frame, and a plurality of roller assemblies are slidably arranged on the second sliding frame. The laser drilling assemblies and the roller assemblies are arranged staggeredly in sequence. The adjacent laser drilling assemblies and rollers are sequentially hinged and linked by connecting rods. The laser drilling assemblies are located at the middle positions between two adjacent roller assemblies. It further includes a driving mechanism, which is used to drive the first sliding frame and the second sliding frame to approach or separate from each other, so as to synchronously adjust the positions of a plurality of laser drilling assemblies on the second sliding frame and synchronously adjust the positions of a plurality of roller assemblies on the first sliding frame.

[0008] Optionally, roller assemblies for tensioning the tipping paper are respectively arranged at both ends of the first sliding frame and are not linked with the laser drilling assemblies.

[0009] Optionally, the first sliding frame includes an arc-shaped first guide rail. Two first guide rails are arranged at a fixed distance from each other, and the ends of the two first guide rails are connected by a first cross bar. The second sliding frame includes an arc-shaped second guide rail. Two second guide rails are arranged at a fixed distance from each other, and the ends of the two second guide rails are connected by a second cross bar.

[0010] Optionally, guiding blocks are symmetrically arranged on the first cross bar. A guiding groove is vertically formed on the inner wall of the guiding block. Guiding wheels are respectively arranged at both ends of the second guide rail, and the guiding wheels are slidably arranged in the guiding groove. A cylinder seat is arranged at the upper end of the guiding block, and an adjusting cylinder is arranged on the cylinder seat. The piston rod of the adjusting cylinder extends downward and is connected with the second cross bar.

[0011] Optionally, the roller assembly includes a core shaft, an inner cylinder and an outer cylinder. A plurality of through holes are evenly distributed on the circumference of the outer cylinder. The inner cylinder is rotatably arranged on the outer wall of the core shaft through a bearing. An annular first cavity is formed between the inner cylinder and the core shaft. The outer cylinder is arranged outside the inner cylinder. One end of the outer cylinder is detachably connected with the inner cylinder, and the other end of the outer cylinder is sleeved on the core shaft. An annular second cavity is formed between the outer cylinder and the inner cylinder. A first flow channel and a second flow channel are respectively arranged on the core shaft. One end of the first flow channel is connected with a gas supply device, and the other end is communicated with the first cavity. One end of the second flow channel is connected with an air extraction device, and the other end is communicated with the second cavity.

[0012] Optionally, the roller assembly further includes a first slider. An arc-shaped first sliding groove is formed inside the first slider. The first slider is slidably arranged on the first guide rail through the first sliding groove. A first connecting cylinder is arranged at one end of the first slider, and both ends of the core shaft are respectively arranged on the inner wall of the first connecting cylinder.

[0013] Optionally, a first threaded hole is provided on the first connecting cylinder, a medium connector is arranged in the first threaded hole, the medium connector is of a hollow structure, and one end of the medium connector communicates with the first flow channel.

[0014] Optionally, the inner cylinder includes a threaded cylinder body and a conical cylinder body integrally connected. The threaded cylinder body is threadedly connected to the inner wall of the outer cylinder. A plurality of L-shaped supports are evenly distributed in the circumferential direction at the end of the conical cylinder body. There is a recovery port between adjacent supports, and the supports are arranged close to the inner wall of the outer cylinder.

[0015] Optionally, a first installation groove is provided at the end of the conical cylinder body, a first sealing ring is arranged in the first installation groove, and the first sealing ring is arranged close to the outer wall of the mandrel; a second installation groove is provided at one end of the outer cylinder, a second sealing ring is arranged in the second installation groove, and the second sealing ring is arranged close to the outer wall of the mandrel. The support is located between the first sealing ring and the second sealing ring.

[0016] Optionally, the laser drilling assembly includes a laser seat and a laser head arranged at the bottom end of the laser seat. Both ends of the laser seat are detachably connected to the second slider. An arc-shaped second sliding groove is arranged inside the second slider, and the second slider is slidably arranged on the second guide rail through the second sliding groove.

[0017] The present invention has the following advantages and beneficial effects:

[0018] In the present invention, by providing an arc-shaped first carriage and a second carriage, a plurality of laser drilling assemblies are slidably arranged on the first carriage, and a plurality of idler roller assemblies are slidably arranged on the second carriage. Adjacent laser drilling assemblies and idler rollers are sequentially hinged and linked through connecting rods. By driving the first carriage and the second carriage to approach or move away from each other through a driving mechanism, the positions of a plurality of laser drilling assemblies on the second carriage are synchronously adjusted, and the positions of a plurality of idler roller assemblies on the first carriage are synchronously adjusted. In this structure, no matter what position, the distance between any two adjacent laser drilling assemblies is the same, the distance between any two adjacent idler roller assemblies is the same, and any one laser drilling assembly is located between two idler roller assemblies. This kind of linkage adjustment mechanism can synchronously adjust the positions of a plurality of idler roller assemblies and laser drilling assemblies, thereby simplifying the installation steps, reducing the installation difficulty, greatly improving the installation accuracy of the laser head. At the same time, the plurality of idler roller assemblies are arranged in an arc shape, which can tighten the tipping paper and ensure the drilling quality.

[0019] The laser drilling device needs to be debugged to ensure the accuracy and effectiveness of laser processing. During the installation and debugging phase, the distances between multiple laser heads and the tipping paper can be adjusted synchronously to ensure that the laser is focused at the optimal point, ensuring the cutting and drilling effect, while reducing the influence on control, preventing material damage, and improving the drilling efficiency while ensuring the drilling quality. Debugging is a process of frequent adjustment and multiple tests. This synchronously linked mechanism can be adjusted synchronously, reducing the difficulty of debugging and improving the debugging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 One of the structural diagrams of the laser drilling device in the present invention;

[0021] Figure 2 is Figure 1 the left view of;

[0022] Figure 3 Two of the structural diagrams of the laser drilling device in the present invention;

[0023] Figure 4 is Figure 1 the front view of;

[0024] Figure 5 is Figure 2 the sectional view along the A-A direction in;

[0025] Figure 6 is Figure 5 the schematic diagram of the idler roller assembly winding the tipping paper for drilling in;

[0026] Figure 7 is Figure 1 the partial enlarged view at a in;

[0027] Figure 8 is Figure 3 the partial enlarged view at b in;

[0028] Figure 9 The structural diagram of the laser drilling assembly in the present invention;

[0029] Figure 10 The sectional view of the laser drilling assembly in the present invention;

[0030] Figure 11 The structural diagram of the idler roller assembly in the present invention;

[0031] Figure 12 is Figure 11 the front view of;

[0032] Figure 13 The sectional view of the idler roller assembly in the present invention;

[0033] Figure 14Structural diagram of the adjusting cylinder and the cylinder seat in the present invention;

[0034] Figure 15 Structural diagram of the second carriage in the present invention;

[0035] Figure 16 Structural diagram of the first carriage in the present invention;

[0036] Figure 17 Cross-sectional view of the outer cylinder in the present invention;

[0037] Figure 18 Structural diagram of the inner cylinder in the present invention;

[0038] Figure 19 Cross-sectional view of the inner cylinder in the present invention.

[0039] Reference numerals: 1 - mounting plate, 2 - guide block, 21 - first connection hole, 22 - guide groove, 23 - V-shaped top wall, 3 - first guide rail, 31 - first cross bar, 4 - second guide rail, 41 - second cross bar, 42 - guide wheel, 43 - second connection hole, 5 - first slider, 51 - first chute, 52 - first hinge shaft, 521 - connecting rod, 53 - first connection cylinder, 54 - second threaded hole, 55 - first screw, 56 - first threaded hole, 6 - second slider, 61 - second chute, 62 - second hinge shaft, 63 - fourth threaded hole, 64 - second screw, 65 - second connection cylinder, 66 - fifth threaded hole, 7 - laser seat, 71 - laser head, 72 - sixth threaded hole, 73 - seventh threaded hole, 74 - mounting shaft, 8 - idler roller assembly, 8a - first cavity, 8b - second cavity, 81 - outer cylinder, 811 - through hole, 812 - third threaded hole, 813 - first central hole, 814 - second mounting groove, 82 - inner cylinder, 821 - threaded cylinder body, 822 - tapered cylinder body, 823 - support, 824 - recovery port, 825 - second central hole, 826 - first mounting groove, 83 - bearing, 84 - core shaft, 841 - first flow channel, 842 - second flow channel, 85 - medium joint, 851 - inner hole, 86 - second sealing ring, 87 - first sealing ring, 9 - adjusting cylinder, 91 - piston rod, 92 - cylinder seat, 93 - V-shaped groove. Detailed implementation manners

[0040] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention.

[0041] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0042] Embodiment 1

[0043] As Figures 1 to 8 shown, a laser drilling device for tipping paper for cigarettes includes a mounting plate 1, a laser drilling assembly, and a roller assembly 8. The mounting plate 1 is provided with an arc-shaped first sliding frame and a second sliding frame at a fixed distance from bottom to top. The arcs of the first sliding frame and the second sliding frame correspond to each other, and the first sliding frame is arranged directly below the second sliding frame. A plurality of laser drilling assemblies are slidably arranged on the first sliding frame, and a plurality of roller assemblies 8 are slidably arranged on the second sliding frame. The laser drilling assemblies and the roller assemblies 8 are arranged staggeredly in sequence. The adjacent laser drilling assemblies and the rollers are sequentially hinged and linked by a connecting rod 521. The laser drilling assemblies are located at the middle positions between two adjacent roller assemblies 8 (as Figure 6 shown). It further includes a driving mechanism for driving the first sliding frame and the second sliding frame to approach or separate from each other, so as to synchronously adjust the positions of a plurality of laser drilling assemblies on the second sliding frame and synchronously adjust the positions of a plurality of roller assemblies 8 on the first sliding frame.

[0044] As Figure 6 shown, the line L1 shown in the figure is the center line of laser emission. Each L1 is located between two adjacent roller assemblies 8. A plurality of L1 lines are respectively perpendicular to the tipping paper, that is, the laser drilling assemblies (laser heads 71) are perpendicular to the tipping paper for drilling.

[0045] Referring to Figure 5 , as a preferred mode of the present invention, five roller assemblies 8 linked to the laser drilling assemblies are provided, and four laser drilling assemblies are provided. Any one of the laser drilling assemblies is located in the middle of the two lower roller assemblies 8. Roller assembly 8 - connecting rod 521 - laser drilling assembly - connecting rod 521 - roller assembly 8, and they are connected in this way in sequence. Then, the four mechanism drilling assemblies and the five roller assemblies 8 can be linked through the connecting rod 521. When one of the laser drilling assemblies is fixed or one of the roller assemblies 8 is fixed, by controlling the relative movement of the first sliding frame and the second sliding frame, the remaining mechanism drilling assemblies and roller assemblies 8 can be driven to slide and adjust their positions.

[0046] Referring to Figure 4 and Figure 6, when the number of idler roller assemblies 8 linked to the laser drilling assembly is set to an odd number, in the present invention, the number of idler roller assemblies 8 linked to the laser drilling assembly is set to five. In this case, the middle idler roller assembly 8 can be fixed in the middle of the first carriage, that is Figure 4 In Figure 4 , the position of point B is the middle position of the arc of the first carriage. At this time, the idler roller assembly 8 at this position is fixed. In this way, after the idler roller assembly 8 in the middle position is fixed, when adjusting the relative positions of the first carriage and the second carriage, the positions of the remaining idler roller assemblies 8 can be symmetrically adjusted by sliding on both sides of the first carriage, and the positions of the laser drilling assemblies can be symmetrically adjusted by sliding on both sides of the second carriage, ensuring the coordination and smoothness of the adjustment.

[0047] In this structure, regardless of the position, the vertical interval between any laser drilling assembly and the tipping paper is the same, the distance between any two adjacent laser drilling assemblies is the same, the distance between any two adjacent idler roller assemblies 8 is the same, and any one laser drilling assembly is located between two idler roller assemblies 8. This kind of linkage adjustment mechanism can synchronously adjust the positions of several idler roller assemblies 8 and laser drilling assemblies, thereby simplifying the installation steps, reducing the installation difficulty, greatly improving the installation accuracy of the laser head 71. At the same time, several idler roller assemblies 8 are arranged in an arc to tighten the tipping paper and ensure the punching quality.

[0048] The laser drilling device needs to be debugged to ensure the accuracy and effect of laser processing. In the present invention, during the installation and debugging stage, the distances between multiple laser heads 71 and the tipping paper can be adjusted synchronously and at one time, ensuring that the laser is focused at the best point, ensuring the cutting and punching effect, while reducing the influence on control, preventing material damage, ensuring the punching quality and improving the punching efficiency. Debugging is a process of frequent adjustment and multiple tests. This synchronous linkage mechanism can perform adjustments synchronously, reducing the debugging difficulty and improving the debugging efficiency.

[0049] As Figures 1 to 8 shown, further, idler roller assemblies 8 for tensioning the tipping paper that are not linked to the laser drilling assembly are respectively arranged at both ends of the first carriage. That is, there are still idle idler roller assemblies 8 at both ends of the first carriage, and these idler roller assemblies 8 are not linked to the laser drilling assembly through the connecting rod 521. Referring to Figure 4 and Figure 6 , the position of point C is the position at both ends of the first carriage. At this time, an idler roller assembly 8 is also arranged at this position, for a total of seven idler roller assemblies 8. When the tipping paper is wound, the tipping paper is wound around the lower surfaces of the two idler roller assemblies 8 at both ends, and at the same time, the tipping paper is wound and tightened on the upper surfaces of the five idler roller assemblies 8 in the middle. This method uses the arc-shaped arranged idler roller assemblies 8 (the five idler roller assemblies 8 linked to the laser drilling assembly in the middle) to tighten the tipping paper, and uses the sliding of the idler roller assemblies 8 at both ends on the first carriage to adjust the tension of the tipping paper.

[0050] As Figures 1 to 8 、 Figures 14 to 16 shown, the first carriage is arranged in a rectangular shape. The first carriage includes an arc-shaped first guide rail 3. Two first guide rails 3 are arranged at a fixed distance apart, and the ends of the two first guide rails 3 are connected by a first cross bar 31. The second carriage is arranged in a rectangular shape. The second carriage includes an arc-shaped second guide rail 4. Two second guide rails 4 are arranged at a fixed distance apart, and the ends of the two second guide rails 4 are connected by a second cross bar 41.

[0051] As Figures 1 to 8 、 Figures 14 to 16 shown, further, two guide blocks 2 are symmetrically arranged on each first cross bar 31. The guide blocks 2 are arranged in a triangular shape. A guide groove 22 is vertically opened on the inner wall of the guide block 2. A first connection hole 21 is opened on the guide block 2. Through the first connection hole 21, the guide block 2 is detachably installed on the mounting plate 1. Guide wheels 42 are respectively arranged at both ends of the second guide rail 4. The guide wheels 42 are slidably arranged in the guide groove 22 to realize the vertical lifting and sliding of the first carriage relative to the second carriage. A cylinder seat 92 is arranged at the upper end of the guide block 2. An adjusting cylinder 9 is arranged on the cylinder seat 92. The piston rod 91 of the adjusting cylinder 9 extends downward and is connected to the second cross bar 41. By the telescopic movement of the adjusting cylinder 9, the lifting movement of the first carriage is controlled, and further the roller assembly 8 and the laser drilling assembly are driven to slide and adjust the position.

[0052] As Figures 1 to 8 、 Figures 14 to 16 shown, a V-shaped groove 93 is arranged on the bottom side of the cylinder seat 92. A V-shaped top wall 23 is arranged at the upper end of the guide block 2. The cylinder seat 92 is arranged on the V-shaped top wall 23 through the cooperation of the V-shaped groove 93. The cylinder seat 92 and the guide block 2 are detachably connected by means of bolts or the like.

[0053] As Figures 1 to 8 、 Figures 14 to 16 shown, a second connection hole 43 is arranged on the second cross bar 41. The piston rod 91 of the adjusting cylinder 9 extends downward and is threadedly arranged in the second connection hole 43.

[0054] Embodiment 2

[0055] In order to ensure the smooth operation of the roller assembly 8 and improve the drilling quality of the laser drilling machine, further optimized designs are made.

[0056] As Figures 1 to 8 、 Figures 11 to 13 and Figures 17 to 19As shown in the figure, the idler assembly 8 includes a core shaft 84, an inner cylinder 82 and an outer cylinder 81. A number of through holes 811 are evenly distributed on the circumference of the outer cylinder 81. A third threaded hole 812 is provided on the inner wall at one end of the outer cylinder 81. The inner wall at the other end of the outer cylinder 81 is successively provided with a second mounting groove 814 and a first central hole 813. The inner diameters of the first central hole 813, the second mounting groove 814 and the third threaded hole 812 increase in sequence. The inner diameter of the first central hole 813 is slightly larger than the outer diameter of the core shaft 84. The inner wall of the inner cylinder 82 is rotatably arranged on the outer wall of the core shaft 84 through bearings 83. The bearings 83 are arranged on the inner walls at both ends of the inner cylinder 82. There is an annular first cavity 8a between the inner cylinder 82 and the core shaft 84. The outer cylinder 81 is arranged outside the inner cylinder 82. One end of the outer cylinder 81 is detachably connected to the inner cylinder 82. The other end of the outer cylinder 81 is sleeved on the core shaft 84 through the first central hole 813. There is an annular second cavity 8b between the outer cylinder 81 and the inner cylinder 82.

[0057] As Figure 13 shown in the figure, a first flow channel 841 and a second flow channel 842 are respectively arranged on the core shaft 84. One end of the first flow channel 841 is connected to a gas supply device, and the other end is communicated with the first cavity 8a. The gas supply device supplies gas into the first cavity 8a to ensure that there is always a certain pressure of gas in the first cavity 8a, which fills the inner wall of the bearing 83 to prevent external dust from infiltrating and affecting the bearing 83 and wearing the bearing 83, resulting in the operation of the idler assembly 8 being blocked. One end of the second flow channel 842 is connected to an air extraction device, and the other end is communicated with the second cavity 8b. Through the air extraction device, a negative pressure is generated inside the second cavity 8b, and the outside is sucked through the through holes 811 on the outer cylinder 81 to timely suck and clean the dust and waste generated during drilling, so as to prevent them from accumulating on the laser head 71 and the drilling table, resulting in the idler assembly 8 not rolling smoothly and further affecting the drilling quality of the laser drilling machine.

[0058] Referring Figure 13 to this, in the present invention, through the double-cylinder idler structure of the inner cylinder 82 and the outer cylinder 81, when using the outer cylinder 81 for dust collection, the dust collected in the outer cylinder 81 is blocked by the inner cylinder 82, so that the bearing 83 inside the inner cylinder 82 will not be affected during the dust collection process. This double-layer cylinder structure, combined with air extraction and gas supply, can have the dual functions of dust collection and bearing 83 protection, greatly improving the operation stability of the idler assembly 8 and ensuring the drilling quality.

[0059] As Figures 1 to 8 、 Figures 11 to 13 and Figures 17 to 19As shown in the figure, further, the inner cylinder 82 includes a threaded cylinder body 821 and a tapered cylinder body 822 that are integrally connected. The structure of the tapered cylinder body 822 can drain and recover the dust in the second cavity 8b, prevent the dust from accumulating in the second cavity 8b, and increase the recovery efficiency. The threaded cylinder body 821 is threadedly connected to the third threaded hole 812 on the inner wall of the outer cylinder 81. A number of L-shaped supports 823 are evenly distributed on the circumference of the end of the tapered cylinder body 822. There is a recovery port 824 between two adjacent supports 823. The supports 823 are arranged closely against the inner wall of the outer cylinder 81. The stability of the connection between the inner cylinder 82 and the outer cylinder 81 is strengthened through the supports 823. At the same time, the dust collected in the second cavity 8b can reach the second flow channel 842 through the recovery port 824 and be suctioned and recovered.

[0060] Figures 11 to 13 and Figures 17 to 19 As shown in the figure, further, a second central hole 825 is provided on the inner wall of the end of the tapered cylinder body 822. The inner diameter of the second central hole 825 is slightly larger than the outer diameter of the core shaft 84. A first installation groove 826 is provided at the end of the tapered cylinder body 822. A first sealing ring 87 is arranged in the first installation groove 826. The first sealing ring 87 is arranged closely against the outer wall of the core shaft 84, increasing the sealing performance of the bearing 83 and preventing the backflow of dust into the bearing 83 when the dust in the second cavity 8b is recovered. A second installation groove 814 is provided at one end of the outer cylinder 81. A second sealing ring 86 is arranged in the second installation groove 814. The second sealing ring 86 is arranged closely against the outer wall of the core shaft 84, preventing external dust from infiltrating or preventing the dust collected in the second cavity 8b from leaking out. The support 823 is located between the first sealing ring 87 and the second sealing ring 86. This structure can greatly improve the sealing performance and dust prevention performance of the bearing, and at the same time improve the dust recovery efficiency and ensure the drilling quality.

[0061] Embodiment 3

[0062] As Figures 1 to 13 shown in the figure, the idler roller assembly 8 further includes a first slider 5. An arc-shaped first chute 51 is provided inside the first slider 5. The first slider 5 is slidably arranged on the first guide rail 3 through the first chute 51. One end of the first slider 5 is provided with a first connection cylinder 53. Both ends of the core shaft 84 are respectively arranged on the inner wall of the first connection cylinder 53. The core shaft 84 and the first connection cylinder 53 can be inserted or connected by threads. This mechanism facilitates the disassembly and assembly of the idler roller assembly 8.

[0063] As Figures 1 to 13 shown in the figure, further, a first threaded hole 56 is provided on the first connection cylinder 53. A medium connector 85 is threadedly connected in the first threaded hole 56. The medium connector 85 is a hollow structure. The medium connector 85 is equivalent to a hollow screw. An inner hole 851 is provided in the medium connector 85. The inner hole 851 of the medium connector 85 is communicated with the first flow channel 841, and gas is supplied into the first cavity 8a through the medium connector 85.

[0064] As Figures 1 to 13 shown, further, one end of the first slider 5 is provided with a first hinge shaft 52, and one end of the connecting rod 521 is hinged to the first hinge shaft 52. A second threaded hole 54 communicating with the first chute 51 is provided at the bottom end of the first slider 5, and a first screw 55 is arranged in the second threaded hole 54. After the position of the first slider 5 is fixed, the first screw 55 can be tightened to further fix the first slider 5 and the fixed idler assembly 8.

[0065] As Figures 1 to 13 shown, the laser drilling assembly includes a laser base 7 and a laser head 71 arranged at the bottom end of the laser base 7. Both ends of the laser base 7 are detachably connected to the second slider 6. An arc-shaped second chute 61 is arranged inside the second slider 6, and the second slider 6 is slidably arranged on the second guide rail 4 through the second chute 61.

[0066] As Figures 1 to 13 shown, further, one end of the second slider 6 is provided with a second hinge shaft 62, and the other end of the connecting rod 521 is hinged to the second hinge shaft 62. A fourth threaded hole 63 communicating with the second chute 61 is provided at the upper end of the second slider 6, and a second screw 64 is arranged in the fourth threaded hole 63. After the position of the second slider 6 is fixed, the second screw 64 can be tightened to further fix the second slider 6 and the laser drilling assembly.

[0067] As Figures 1 to 13 shown, further, one end of the second slider 6 is provided with a second connecting cylinder 65. A seventh threaded hole 73 is horizontally arranged inside the laser base 7, and a mounting shaft 74 is threadedly connected in the seventh threaded hole 73. Both ends of the mounting shaft 74 are respectively arranged on the inner walls of the second connecting cylinder 65. The mounting shaft 74 and the second connecting cylinder 65 can be inserted or threadedly connected. A fifth threaded hole 66 is provided on the second connecting cylinder 65, and the mounting shaft 74 and the second connecting cylinder 65 are fixed by screwing a screw into the fifth threaded hole 66. The laser base 7 is arranged in a Z shape, and a sixth threaded hole 72 is provided at the bottom end of the laser base 7, and the laser head 71 is connected in the sixth threaded hole 72.

[0068] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A laser punching device for cigarette tipping paper, characterized in that: It includes a mounting plate, a laser drilling assembly, and a roller assembly. The mounting plate is provided with an arc-shaped first slide and a second slide at a fixed distance from bottom to top. A number of laser drilling assemblies are slidably arranged on the first slide, and a number of roller assemblies are slidably arranged on the second slide. The laser drilling assemblies and the roller assemblies are arranged staggeredly in sequence. The adjacent laser drilling assemblies and the rollers are hinged and linked in sequence by connecting rods. The laser drilling assemblies are located at the middle positions between two adjacent roller assemblies. It further includes a driving mechanism, which is used to drive the first slide and the second slide to approach or move away from each other, so as to synchronously adjust the positions of a number of laser drilling assemblies on the second slide and synchronously adjust the positions of a number of roller assemblies on the first slide. The first slide includes an arc-shaped first guide rail. The two first guide rails are arranged at a fixed distance. The ends of the two first guide rails are connected by a first cross bar. The second slide includes an arc-shaped second guide rail. The two second guide rails are arranged at a fixed distance. The ends of the two second guide rails are connected by a second cross bar. Guide blocks are symmetrically arranged on the first cross bar. A guide groove is vertically opened on the inner wall of the guide block. Guide wheels are respectively arranged at both ends of the second guide rail. The guide wheels are slidably arranged in the guide groove. A cylinder seat is arranged at the upper end of the guide block. An adjusting cylinder is arranged on the cylinder seat. The piston rod of the adjusting cylinder extends downward and is connected to the second cross bar. The roller assembly includes a core shaft, an inner cylinder, and an outer cylinder. A number of through holes are evenly distributed on the circumference of the outer cylinder. The inner cylinder is rotatably arranged on the outer wall of the core shaft through a bearing. There is an annular first cavity between the inner cylinder and the core shaft. The outer cylinder is arranged outside the inner cylinder. One end of the outer cylinder is detachably connected to the inner cylinder. The other end of the outer cylinder is sleeved on the core shaft. There is an annular second cavity between the outer cylinder and the inner cylinder. A first flow channel and a second flow channel are respectively arranged on the core shaft. One end of the first flow channel is connected to a gas supply device, and the other end is communicated with the first cavity. One end of the second flow channel is connected to an air extraction device, and the other end is communicated with the second cavity. The roller assembly further includes a first slider. An arc-shaped first chute is arranged inside the first slider. The first slider is slidably arranged on the first guide rail through the first chute. One end of the first slider is provided with a first connecting cylinder. The two ends of the core shaft are respectively arranged on the inner wall of the first connecting cylinder. The inner cylinder includes a threaded cylinder body and a conical cylinder body which are integrally connected. The threaded cylinder body is threadedly connected to the inner wall of the outer cylinder. A number of L-shaped supports are evenly distributed on the circumference of the end of the conical cylinder body. There is a recovery port between two adjacent supports. The supports are closely attached to the inner wall of the outer cylinder.

2. The cigarette tipping paper laser drilling device according to claim 1, wherein: Tensioning roller assemblies for tensioning and loading paper are respectively arranged at both ends of the first slide and are not linked with the laser drilling assemblies.

3. The laser drilling device for cigarette tipping paper according to claim 1, wherein: A first threaded hole is arranged on the first connecting cylinder. A medium connector is arranged in the first threaded hole. The medium connector is of a hollow structure. One end of the medium connector is communicated with the first flow channel.

4. The cigarette tipping paper laser drilling device according to claim 1, characterized in that: A first mounting groove is provided at the end of the conical cylinder body. A first sealing ring is arranged in the first mounting groove and is disposed closely against the outer wall of the mandrel. One end of the outer cylinder is provided with a second mounting groove. A second sealing ring is arranged in the second mounting groove and is disposed closely against the outer wall of the mandrel. The support is located between the first sealing ring and the second sealing ring.

5. The laser punching device for cigarette tipping paper according to claim 1, wherein: The laser drilling assembly includes a laser seat and a laser head disposed at the bottom end of the laser seat. Both ends of the laser seat are detachably connected to the second slider respectively. An arc-shaped second sliding groove is arranged inside the second slider, and the second slider is slidably arranged on the second guide rail through the second sliding groove.

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