Laser drilling device
By using laser emission modules, spectroscopes, total reflectors and apertures in the laser drilling device to adjust the laser energy, the problem of drilling instability caused by differences in optical components is solved, and the energy balance and cost reduction of drilling holes in the internal and external smoke exhaust branch are achieved.
Patent Information
- Application Number
- CN202421905110.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-07
AI Technical Summary
In the prior art, the optical components of the laser hole drilling device will have performance differences after a long period of operation, resulting in greater differences in hole drilling of internal and external smoke exhaust branches, and the cost of replacing optical components, and unstable hole drilling of internal and external smoke exhaust branches.
A laser hole drilling device is designed. By setting a laser emission module at the first end of the light transmission channel, the laser beam is transmitted and reflected in a preset proportion using a spectrometer and a total reflector, and the laser energy is adjusted in combination with the first and second apertures to ensure the energy balance of the internal and external smoke exhaust outlet holes.
The internal and external smoke exhaust outlet hole drilling efficiency and cost reduction are achieved, ensuring the stability of hole drilling quality, and reducing equipment maintenance costs.
Smart Images
Figure CN222999886U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cigarette production, in particular to a laser drilling device. Background Technique
[0002] At present, in order to improve the quality of cigarettes, it is usually necessary to drill holes in cigarette rods. The method of drilling holes in cigarette rods is usually to divide the cigarette rods to be drilled into two rows, inner and outer, according to the requirements of the cigarette manufacturing process. A beam of laser is divided into two beams, inner and outer, by a beam splitter. After passing through their respective optical paths, the emitted laser beams are focused, and the inner and outer rows of cigarette rods are drilled respectively.
[0003] However, after running for a period of time, the optical elements in the inner and outer optical paths will form performance differences. For example, the reflection / transmission ratio of the beam splitter, the transmittance of the focusing lens, etc. These differences will cause the drilling differences between the inner and outer rows of cigarette rods to become larger. Usually, to solve this problem, it is necessary to replace optical elements such as the beam splitter and the focusing lens (it is difficult to ensure the balance of the two optical paths by only replacing some optical elements), which has the problem of high cost. Summary of the Invention
[0004] The utility model provides a laser drilling device to achieve the technical effect of reducing the drilling cost while improving the drilling efficiency of the inner and outer rows of cigarette rods.
[0005] According to one aspect of the utility model, a laser drilling device is provided. The laser drilling device includes: an optical transmission channel and a laser emission module disposed at the first end of the optical transmission channel. A beam splitter is disposed at the connection position between the first position of the optical transmission channel and the second end of the first cigarette rod optical path. A total reflection mirror is disposed at the connection position between the third end of the optical transmission channel and the fourth end of the second cigarette rod optical path. The first position is located between the first end and the third end. A first diaphragm is disposed at the second position in the first cigarette rod optical path. A second diaphragm is disposed at the third position in the second cigarette rod optical path. Wherein,
[0006] The laser emission module is configured to control the emission of a laser beam so that the laser beam is incident on the beam splitter through the first end of the optical transmission channel;
[0007] The beam splitter is configured to transmit and reflect the laser beam according to a preset first ratio, so that the first laser after transmission passes through the optical transmission channel to the total reflection mirror, and the second laser after reflection passes through the first diaphragm to drill holes in the inner row of cigarette rods;
[0008] The total reflection mirror is configured to reflect the received first laser to the second cigarette rod optical path according to a preset second ratio, so that the reflected third laser passes through the first diaphragm to drill holes in the outer row of cigarette rods.
[0009] Optionally, the first diaphragm is configured to adjust the second laser at the second position, so that the adjusted fourth laser drills holes in the inner exhaust branch;
[0010] The second diaphragm is configured to adjust the third laser at the third position, so that the adjusted fifth laser drills holes in the outer exhaust branch.
[0011] Optionally, the second position is located between the second end and the fifth end of the first cigarette path; the third position is located between the fourth end and the sixth end of the second cigarette path; the inner exhaust branch is placed at the fifth end; the outer exhaust branch is placed at the sixth end.
[0012] Optionally, an inner exhaust focusing lens is provided at the fourth position in the first cigarette path; an outer exhaust focusing lens is provided at the fifth position in the second cigarette path; wherein,
[0013] The inner exhaust focusing lens is configured to focus the adjusted fourth laser, so that the focused sixth laser drills holes in the inner exhaust branch;
[0014] The outer exhaust focusing lens is configured to focus the adjusted fifth laser, so that the focused seventh laser drills holes in the outer exhaust branch.
[0015] Optionally, the fourth position is located between the second position and the fifth end of the first cigarette path, and the fifth position is located between the third position and the sixth end of the second cigarette path.
[0016] Optionally, the laser drilling device further includes: a ventilation detection module, wherein,
[0017] The ventilation detection module is configured to detect the first ventilation degree of the inner exhaust branch after drilling, and detect the second ventilation degree of the outer exhaust branch after drilling, and generate a diaphragm adjustment instruction when it is determined that the preset balance condition is not met based on the first ventilation degree and the second ventilation degree.
[0018] Optionally, the laser drilling device further includes: a programmable control unit and a motor;
[0019] The programmable control unit is configured to generate an opening adjustment instruction when receiving the diaphragm adjustment instruction sent by the ventilation detection module, and send the opening adjustment instruction to the motor;
[0020] The motor is configured to receive the opening adjustment instruction and adjust the opening of the diaphragm to be adjusted in the opening adjustment instruction, so that the laser energy passing through the first cigarette path and the second cigarette path reaches balance; wherein, the diaphragm to be adjusted includes the first diaphragm and the second diaphragm.
[0021] In the technical solution of the embodiment of the present utility model, a laser emission module is provided at the first end of the optical transmission channel, a beam splitter is provided at the connection position between the first position of the optical transmission channel and the second end of the first cigarette light path, and a total reflection mirror is provided at the connection position between the third end of the optical transmission channel and the fourth end of the second cigarette light path; a first diaphragm is provided at the second position in the first cigarette light path; a second diaphragm is provided at the third position in the second cigarette light path; the laser emission module is used to control the emission of a laser beam so that the laser beam is incident on the beam splitter through the first end of the optical transmission channel; the beam splitter is used to transmit and reflect the laser beam according to a preset first ratio, so that the first transmitted laser passes through the optical transmission channel to the total reflection mirror, and the reflected second laser is adjusted by the first diaphragm to punch holes in the inner exhaust cigarette; the total reflection mirror is used to reflect the received first laser to the second cigarette light path according to a preset second ratio, so that the reflected third laser is adjusted by the second diaphragm to punch holes in the outer exhaust cigarette, solving the problems in the prior art that replacing optical elements to adjust laser punching has high costs and unstable punching of inner and outer exhaust cigarettes. After the laser emission module controls the emission of the laser beam, the laser beam is incident on the beam splitter through the first end of the optical transmission channel. Furthermore, the beam splitter transmits and reflects the laser beam according to a preset first ratio, and the reflected second laser is adjusted by the first diaphragm to punch holes in the inner exhaust cigarette. The transmitted first laser passes through the optical transmission channel to the total reflection mirror, and the total reflection mirror reflects the first laser to the second cigarette light path according to a preset second ratio, so that the reflected third laser is adjusted by the second diaphragm to punch holes in the outer exhaust cigarette. By using two diaphragms to adjust the laser energy passing through the inner and outer exhaust cigarette light paths, the laser energy passing through the inner and outer exhaust cigarette light paths is balanced, ensuring the punching quality of the inner and outer exhaust cigarettes while improving the punching efficiency of the inner and outer exhaust cigarettes and reducing the punching cost.
[0022] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present utility model, nor is it used to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. Description of the Drawings
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0024] Figure 1 is a schematic structural diagram of a laser punching device provided according to Embodiment 1 of the present utility model;
[0025] Figure 2It is a schematic structural diagram of a laser drilling device provided according to Embodiment 1 of the present utility model. Detailed implementation manners
[0026] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below 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 in 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.
[0027] It should be noted that the terms "first", "second", etc. in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily need to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.
[0028] Embodiment 1
[0029] Figure 1 It is a schematic structural diagram of a laser drilling device provided according to Embodiment 1 of the present utility model. This embodiment is applicable to the case of using a laser drilling device to drill holes in internal and external smoke exhaust branches.
[0030] As Figure 1 shown, the laser drilling device provided in this embodiment includes: an optical transmission channel and a laser emission module 20 provided at the first end 1 of the optical transmission channel. A beam splitter 21 is provided at the connection position between the first position 2 of the optical transmission channel and the second end 3 of the first cigarette optical path. A total reflection mirror 22 is provided at the connection position between the third end 4 of the optical transmission channel and the fourth end 5 of the second cigarette optical path; the first position 2 is located between the first end 1 and the third end 4; a first diaphragm 23 is provided at the second position 6 in the first cigarette optical path; a second diaphragm 24 is provided at the third position 7 in the second cigarette optical path; wherein,
[0031] The laser emission module 20 is used to control the emission of a laser beam so that the laser beam is incident on the beam splitter 21 through the first end 1 of the optical transmission channel;
[0032] A beam splitter 21 is configured to transmit and reflect a laser beam according to a preset first ratio, so that the first laser beam after transmission is transmitted through an optical transmission channel to a total reflection mirror 22, and the second laser beam after reflection is adjusted by a first aperture 23 and then used to drill holes in the inner exhaust cigarette;
[0033] A total reflection mirror 22 is configured to reflect the received first laser beam to a second cigarette optical path according to a preset second ratio, so that the reflected third laser beam is adjusted by a second aperture 24 and then used to drill holes in the outer exhaust cigarette.
[0034] Among them, the beam splitter 21 can refer to a lens that can allow part of the light to pass through and part of the light to be reflected to achieve a beam splitting effect. The total reflection mirror 22 can refer to a total reflection mirror, and the ratio of the reflected light beam is 100%, that is, the preset second ratio is 100%. The light beam reflected by the total reflection mirror 30 can be called the third laser beam. The first aperture and the second aperture can be entities used to control the amount of laser passing through, and they are used to adjust the intensity of the light beam energy passing through the optical path. For example, the larger the aperture opening, the stronger the light beam energy passing through the optical path, and the smaller the aperture opening, the weaker the light beam energy passing through the optical path.
[0035] In this embodiment, the laser emission module 20 can be used to control the emission of the laser beam. The emitted laser beam first enters the beam splitter 21 through the first end 1 of the optical transmission channel. The beam splitter 21 can transmit and reflect the laser beam according to a preset first ratio. For example, the preset first ratio can be 50%, that is, half of the laser beam incident on the beam splitter is reflected and half is transmitted by the beam splitter, so as to divide a laser beam into a reflected beam and a transmitted beam, forming two beams of light. The transmitted beam of light is called the first laser beam, and the reflected beam of light is called the second laser beam. In this way, the reflected second laser beam will first pass through the second end 3 of the first cigarette optical path, and then be adjusted by the first aperture 23 at the second position 6, and then transmitted to the inner exhaust cigarette to drill holes in the inner exhaust cigarette. The transmitted first laser beam will pass through the optical transmission channel from the first position 2 to the third end 4 until it is transmitted to the total reflection mirror 22. The total reflection mirror 22 reflects the received first laser beam to the second cigarette optical path according to a preset second ratio. The reflected laser beam is called the third laser beam. In this way, the third laser beam will first pass through the fourth end 5 of the second cigarette optical path, and then be adjusted by the second aperture 24 at the third position 7, and then transmitted to the outer exhaust cigarette to drill holes in the outer exhaust cigarette.
[0036] The technical solution of this embodiment is as follows: a laser emission module is provided at the first end of the optical transmission channel, a beam splitter is provided at the connection position between the first position of the optical transmission channel and the second end of the first cigarette rod optical path, and a total reflection mirror is provided at the connection position between the third end of the optical transmission channel and the fourth end of the second cigarette rod optical path; a first diaphragm is provided at the second position in the first cigarette rod optical path; a second diaphragm is provided at the third position in the second cigarette rod optical path; the laser emission module is used to control the emission of a laser beam so that the laser beam is incident on the beam splitter through the first end of the optical transmission channel; the beam splitter is used to transmit and reflect the laser beam according to a preset first ratio, so that the first laser after transmission passes through the optical transmission channel to the total reflection mirror, and the second laser after reflection is adjusted by the first diaphragm to punch holes in the inner cigarette rod; the total reflection mirror is used to reflect the received first laser to the second cigarette rod optical path according to a preset second ratio, so that the reflected third laser is adjusted by the second diaphragm to punch holes in the outer cigarette rod, solving the problems in the prior art that replacing optical elements to adjust laser punching has high costs and unstable punching of inner and outer cigarette rods. After the laser beam is emitted by controlling the laser emission module, the laser beam is incident on the beam splitter through the first end of the optical transmission channel. Furthermore, the laser beam is transmitted and reflected by the beam splitter according to a preset first ratio, and the second laser after reflection is adjusted by the first diaphragm to punch holes in the inner cigarette rod. The first laser after transmission passes through the optical transmission channel to the total reflection mirror, and the first laser is reflected to the second cigarette rod optical path by the total reflection mirror according to a preset second ratio, so that the reflected third laser is adjusted by the second diaphragm to punch holes in the outer cigarette rod. By adjusting the laser energy passing through the inner and outer cigarette rod optical paths through two diaphragms, the laser energy passing through the inner and outer cigarette rod optical paths is balanced, ensuring the punching quality of the inner and outer cigarette rods while improving the punching efficiency of the inner and outer cigarette rods and reducing the punching cost.
[0037] Based on the above technical solution, the first diaphragm 23 is used to adjust the second laser passing through the second position 6 so that the adjusted fourth laser punches holes in the inner cigarette rod; the second diaphragm 24 is used to adjust the third laser passing through the third position 7 so that the adjusted fifth laser punches holes in the outer cigarette rod.
[0038] Wherein, the second position 6 is located between the second end 3 and the fifth end 8 of the first cigarette rod optical path; the third position 7 is located between the fourth end 5 and the sixth end 9 of the second cigarette rod optical path; the inner cigarette rod is placed at the fifth end 8; the outer cigarette rod is placed at the sixth end 9.
[0039] In this embodiment, the second laser reflected by the spectroscope 21 will first be transmitted to the second position 6 through the second end 3 of the first cigarette path. The first diaphragm 23 at the second position 6 will control the second laser through the current opening degree, adjust the laser passing through the first cigarette path, and the adjusted laser is called the fourth laser. The fourth laser will be transmitted from the second position 6 to the fifth end 8 of the first cigarette path to punch holes in the inner exhaust cigarette placed at the fifth end 8. The third laser reflected by the total reflection mirror 22 will first be transmitted to the third position 7 through the fourth end 5 of the second cigarette path. The second diaphragm 24 at the third position 7 will control the third laser through the current opening degree, adjust the laser passing through the first cigarette path, and the adjusted laser is called the fifth laser. The fifth laser will be transmitted from the third position 7 to the sixth end 9 of the first cigarette path to punch holes in the outer exhaust cigarette placed at the sixth end 9. The advantage of this setting is that the laser passing through the cigarette path can be adjusted by the diaphragm opening degree, so that the laser energies passing through the first cigarette path and the second cigarette path are balanced, ensuring balanced punching of the inner and outer exhaust cigarettes.
[0040] Based on the above technical solution, continue to refer to Figure 1 , an inner row focusing mirror 25 is provided at the fourth position 10 in the first cigarette path; an outer row focusing mirror 26 is provided at the fifth position 11 in the second cigarette path; wherein, the inner row focusing mirror 25 is used to focus the adjusted fourth laser so that the focused sixth laser punches holes in the inner exhaust cigarette; the outer row focusing mirror 26 is used to focus the adjusted fifth laser so that the focused seventh laser punches holes in the outer exhaust cigarette.
[0041] Among them, the fourth position 10 is located between the second position 6 and the fifth end 8 of the first cigarette path, and the fifth position 11 is located between the third position 7 and the sixth end 9 of the second cigarette path. The inner row focusing mirror and the outer row focusing mirror are used to form a focus of the laser on the cigarette surface.
[0042] In this embodiment, the fourth laser will first be transmitted from the second position 6 to the fourth position 10 in the first cigarette path. The inner row focusing mirror 25 at the fourth position 10 focuses the fourth laser passing through it, and the focused laser is called the sixth laser. After the sixth laser passes through the fifth end 8 of the first cigarette path, it punches holes in the inner exhaust cigarette. The fifth laser will be transmitted from the third position 7 to the fifth position 11 in the second cigarette path. The outer row focusing mirror 26 at the fifth position 11 focuses the fifth laser passing through it, and the focused laser is called the seventh laser. After the seventh laser passes through the sixth end 9 of the second cigarette path, it punches holes in the outer exhaust cigarette. The advantage of this setting is that the laser is focused on the cigarette surface through the focusing mirror, improving the punching efficiency and quality of the inner and outer rows.
[0043] Based on the above technical solution, the laser drilling device further includes: a ventilation detection module, wherein the ventilation detection module is configured to detect the first ventilation degree of the inner smoke exhaust branch after drilling, and detect the second ventilation degree of the outer smoke exhaust branch after drilling, and generate a diaphragm adjustment instruction when it is determined that the preset balance condition is not satisfied based on the first ventilation degree and the second ventilation degree.
[0044] Wherein, the first ventilation degree and the second ventilation degree may refer to the percentage of fresh air entering through the laser drilling in the gas inhaled from the filter tip of the cigarette. The preset balance condition may refer to the condition for measuring whether the standard deviation of the ventilation degree data meets the standard.
[0045] In this embodiment, the ventilation detection module can be used to detect the first ventilation degree of the inner smoke exhaust branch after drilling and the second ventilation degree of the outer smoke exhaust branch after drilling, so as to measure whether the standard deviation of the ventilation degree data meets the standard through the first ventilation degree and the second ventilation degree. When the standard deviation reaches the preset deviation range, it is considered that the standard deviation of the ventilation degree data meets the standard, and at this time, it is determined that the preset balance condition is satisfied; if the standard deviation does not reach the preset deviation range, it is considered that the standard deviation of the ventilation degree data does not meet the standard, and at this time, it is determined that the preset balance condition is not satisfied. Further, when it is determined that the preset balance condition is not satisfied, a diaphragm adjustment instruction can be generated to adjust the laser energy passing through the cigarette optical path by adjusting the specified diaphragm opening, so as to ensure that the laser energies passing through the first cigarette optical path and the second cigarette optical path reach balance.
[0046] Based on the above technical solution, the laser drilling device further includes: a programmable control unit and a motor; the programmable control unit is configured to generate an opening adjustment instruction when receiving the diaphragm adjustment instruction sent by the ventilation detection module, and send the opening adjustment instruction to the motor; the motor is configured to receive the opening adjustment instruction and adjust the opening of the diaphragm to be adjusted in the opening adjustment instruction, so that the laser energies passing through the first cigarette optical path and the second cigarette optical path reach balance.
[0047] Wherein, the diaphragm to be adjusted may refer to the diaphragm whose opening needs to be adjusted. The diaphragm to be adjusted includes a first diaphragm and a second diaphragm. That is to say, the diaphragm to be adjusted may be the first diaphragm or the second diaphragm.
[0048] In this embodiment, the ventilation detection module can send the diaphragm adjustment instruction to the programmable control unit. In this way, when the programmable control unit receives the diaphragm adjustment instruction, it can generate an opening adjustment instruction and send the opening adjustment instruction to the motor. When the motor receives the opening adjustment instruction, it adjusts the opening of the diaphragm to be adjusted through the diaphragm to be adjusted in the opening adjustment instruction, so that the laser passing through the diaphragm to be adjusted changes, and the laser energies passing through the first cigarette optical path and the second cigarette optical path reach balance.
[0049] Exemplarily, refer to Figure 2 , Figure 2 which can be represented as a laser drilling device. The laser drilling device includes an optical path 1 (i.e., the first cigarette rod optical path) and an optical path 2 (the second cigarette rod optical path). In the optical path 1, a shutter 1 (i.e., the first diaphragm) and an inner row focusing lens are deployed. In the optical path 2, a shutter 2 (i.e., the second diaphragm) and an outer row focusing lens are deployed. Drilling of the inner and outer exhaust cigarette rods can be achieved based on the laser drilling device, and the implementation method can be as follows: control the laser reflected after passing through a 50% beam splitter to pass through the shutter 1 in the optical path 1, and then drill the inner exhaust cigarette rod through the inner row focusing lens. Control the laser transmitted after passing through the 50% beam splitter to pass through the shutter 2 in the optical path 2, and then drill the outer exhaust cigarette rod through the outer row focusing lens. When the ventilation detection module detects a deviation in the ventilation degree data of the inner and outer exhaust cigarette rods, an opening adjustment instruction is sent to the diaphragm motor through the PLC (i.e., the programmable control unit) to adjust the opening of the diaphragm, so that the laser energy reaches balance between the inner and outer exhaust cigarette rods, thereby ensuring that the standard deviation of the ventilation degree data meets the standard.
[0050] The technical solution provided in this embodiment controls the balance of laser energy by controlling the opening of the diaphragm, without the need to adjust the focusing position of the optical element, reducing the requirements for equipment performance. At the same time, after balancing the laser energy, the balance of the ventilation degree data of the inner and outer exhaust cigarette rods can be achieved, ensuring that the standard deviation of the ventilation degree data of the inner and outer exhaust cigarette rods meets the standard. While meeting the requirements of the drilling process, the drilling stability is improved.
[0051] Note that the above is only a preferred embodiment of the present invention and the applied technical principle. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here. Various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.
Claims
1. A laser drilling device, characterized in that: include: An optical transmission channel and a laser emission module arranged at the first end of the optical transmission channel, a beam splitter is arranged at the connection position between the first position of the optical transmission channel and the second end of the first cigarette optical path, and a total reflection mirror is arranged at the connection position between the third end of the optical transmission channel and the fourth end of the second cigarette optical path; the first position is located between the first end and the third end; the second position in the first cigarette optical path is arranged with a first aperture; the third position in the second cigarette optical path is arranged with a second aperture; wherein, The laser emission module is used to control the emission of the laser beam so that the laser beam is incident on the beam splitter through the first end of the optical transmission channel; The beam splitter is used to transmit and reflect the laser beam according to a preset first ratio, so that the transmitted first laser is transmitted to the total reflection mirror through the optical transmission channel, and the reflected second laser is adjusted by the first aperture to punch holes in the inner smoke exhaust stick; The total reflection mirror is used to reflect the received first laser to the second cigarette optical path according to a preset second ratio, so that the reflected third laser is adjusted by the second aperture to punch holes in the externally discharged cigarette.
2. The laser drilling device according to claim 1, characterized in that: The first aperture is used to adjust the second laser passing through the second position so that the adjusted fourth laser punches holes in the inner exhaust cigarette; The second aperture is used to adjust the third laser passing through the third position so that the adjusted fifth laser can punch holes in the external exhaust cigarette.
3. The laser drilling device according to claim 2, characterized in that: The second position is located between the second end and the fifth end of the first cigarette light path; the third position is located between the fourth end and the sixth end of the second cigarette light path; the fifth end is used to place inner exhaust cigarettes; the sixth end is used to place outer exhaust cigarettes.
4. The laser drilling device according to claim 2, characterized in that: The fourth position in the optical path of the first cigarette is provided with an inner row focusing mirror; the fifth position in the optical path of the second cigarette is provided with an outer row focusing mirror; wherein, The inner row focusing mirror is used to focus the adjusted fourth laser so that the focused sixth laser can punch holes in the inner row cigarettes; The outer row focusing mirror is used to focus the adjusted fifth laser so that the focused seventh laser can punch holes in the outer row cigarettes.
5. The laser drilling device according to claim 4, characterized in that: The fourth position is located between the second position and the fifth end of the first cigarette light path, and the fifth position is located between the third position and the sixth end of the second cigarette light path.
6. The laser drilling device according to claim 1, characterized in that: The laser drilling device further includes: a ventilation detection module, wherein: The ventilation detection module is used to detect a first ventilation degree of the inner cigarette exhaust branch after punching, and to detect a second ventilation degree of the outer cigarette exhaust branch after punching, and to generate an aperture adjustment instruction when it is determined based on the first ventilation degree and the second ventilation degree that a preset balance condition is not met.
7. The laser drilling device according to claim 6, characterized in that: The laser drilling device also includes: a programmable control unit and a motor; The programmable control unit is used to generate an opening adjustment instruction when receiving the diaphragm adjustment instruction sent by the ventilation detection module, and send the opening adjustment instruction to the motor; The motor is used to receive the opening adjustment instruction and adjust the opening of the aperture to be adjusted in the opening adjustment instruction so that the laser energy passing through the first cigarette light path and the second cigarette light path is balanced; wherein the aperture to be adjusted includes a first aperture and a second aperture.