A tipping machine filter centring drum auxiliary viewing device

Abstract

The application discloses a filter centering drum auxiliary observation device of a tipping machine, which comprises a reflection part, wherein the reflection part is installed on the inner wall of the machine, is perpendicular to the axis of the filter centering drum, and forms an image of the inner end face of the tobacco receiving groove of the filter centering drum on a reflection plane, and the midpoint of the image is located at the center of the reflection plane. The device is designed according to the characteristics of the machine type, is based on the reflection law of light, and takes the eye position of an operator when the operator operates the tipping machine as a fault observation point. The blind area can be observed through the reflection part, so that the maintenance time is reduced, and the operation efficiency of the equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of auxiliary observation technology for filter nozzle alignment drum, and specifically to an auxiliary observation device for filter nozzle alignment drum in a fitting machine. Background Technology

[0002] The cigarette making and receiving unit consists of a cigarette making machine and a receiving and loading machine, such as Figure 1 As shown, its working process is as follows:

[0003] The filters received by the filter receiver are stored in the filter cartridge 1. As the filter cutting drum 2 rotates counterclockwise, the filter rods attached to the drum groove are cut into double-length filters by the filter cutter and rotate with the filter cutting drum 2. The filter arranging drum 3 picks up the filters at the junction with the filter cutting drum 2. The inner and outer rows of filters in the filter arranging drum 3 are not on the same straight line. The double-length filters in the inner and outer rows will be placed into the smoke receiving groove of the filter aligning drum 4 after they are joined with the filter aligning drum. The inner side of the inner exhaust pipe is flush with the inner end face of the smoke receiving groove, and the outer side of the outer exhaust pipe is flush with the outer end face of the smoke receiving groove. After the filter centering drum 4 receives the double filter, as the drum rotates, the inner filter will slowly move outward, and the outer filter will slowly move inward. It is required that the center line of the double filter coincides with the center line of the filter centering drum before the filter centering drum 4 connects to the filter receiving drum 5. The double filters on the same straight line are connected to the filter receiving drum 5 and receive single cigarettes from the cigarette separation drum 6. On the filter receiving drum 5, as the drum rotates, the single cigarettes on both sides slowly converge towards the center, eventually converging to a length equal to that of a double cigarette.

[0004] When the filter tip is transferred from the filter tip arranging drum 3 to the filter tip centering drum 4, the positioning of the inner and outer filter tips is achieved by the suction from the inner end face 42 of the smoke receiving groove and the outer end face 43 of the outer groove of the filter tip centering drum 4, respectively. The filter tip centering drum 4 is as follows... Figure 2 As shown. When filter residue adheres to the inner end face 42 of the smoke receiving groove and the outer end face 43 of the outer groove, the filter in the groove will become skewed and misaligned. Even during the process of aligning the filter on the drum, the filter in the groove remains skewed and misaligned. When the filter is transferred to the filter mounting drum 5, the skewed filter will fall off due to insufficient airflow on the drum, and the misaligned filter will interfere with the cigarette during the closing process, causing both to fall off simultaneously and resulting in blockage. Therefore, regular inspection and troubleshooting are necessary.

[0005] When troubleshooting, it is usually necessary to manually rotate the machine once to check each filter tip centering drum 4 for filter tip residue (fibrous clumps, filter tip packaging paper, residual filter tips, etc.). If filter tip residue is found in the smoke collection groove, cleaning the blockage will prevent the problem from recurring. Due to the design of the filter tip centering drum smoke collection groove, filter tip residue on the outer end face 43 and the middle of the smoke collection groove is readily visible. However, whether there is a blockage on the inner end face 42 is a blind spot from the operator's perspective. Therefore, it takes an average of about 10 minutes to completely eliminate this problem, resulting in a relatively long maintenance time. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides an auxiliary observation device for aligning the filter nozzle of an installation machine. This device uses mirror imaging to solve the problem of blind spots during maintenance, thereby improving maintenance efficiency.

[0007] Specifically, the present invention is implemented as follows:

[0008] An auxiliary observation device for aligning filter nozzles on a splicing machine includes:

[0009] The reflector is located on the inner wall of the machine and is inclined as a whole. Its reflective plane is perpendicular to the axis of the filter nozzle centering drum and forms an angle α with the inner wall of the machine and an angle β with the horizontal plane. The image of the inner end face of the filter nozzle centering drum smoke-bearing groove is formed on the reflective plane, and the midpoint of the image is located at the center of the reflective plane.

[0010] Furthermore, the auxiliary observation device for the filter nozzle alignment drum of the assembly machine also includes: a mounting base, which is set on the inner wall of the machine and located on the side of the filter nozzle alignment drum; the reflector is set on the mounting base.

[0011] Furthermore, the mounting base is rectangular, with its sides connected to the inner wall of the machine.

[0012] Furthermore, the mounting base is positioned higher than the center of the filter tip centering drum.

[0013] Furthermore, the reflector includes:

[0014] Mirror-finish support components;

[0015] A reflector, mounted on a mirror support, is used to form an image of the filter tip's center drum and smoke tray.

[0016] Furthermore, the mirror support includes: a horizontal connecting part and an inclined mounting part for mounting the reflector, the inclined mounting part forming an angle α with the inner wall of the machine and an angle β with the horizontal plane.

[0017] Furthermore, the reflecting mirror is a plane mirror or a convex mirror.

[0018] Furthermore, the horizontal distance between the screw hole on the mounting base near the center of the filter nozzle centering drum and the center of the filter nozzle centering drum is 125.57 mm; 17.5° < α < 18.75°, β = 15°.

[0019] Furthermore, the horizontal distance from the central axis of the mounting base to the center of the filter nozzle centering drum is 116 mm, 2° < α < 4°, and β = 26.7°.

[0020] Working principle of the invention:

[0021] Using the operator's eye position during manual rotation as the observation point, and the center of the image formed on the mirror surface of the inner end face of the filter nozzle's smoke-bearing groove as the mirror's center point, the mirror's location is determined. Based on information such as the dimensions of the filter nozzle's centering drum, and ensuring that the reflecting surface is perpendicular to the plane forming an angle β with the horizontal plane, the horizontal deflection angle of the reflector is determined. Then, based on the principle of reflection, the deflection angle between the mirror and the machine's inner wall is calculated according to the dimensions of the filter nozzle's centering drum and the mirror's dimensions. After determining the mirror's position and angle, the mounting base is positioned based on the mirror's actual spatial location and the screw positions on the machine's inner wall. The mounting base between the machine's inner wall and the reflector is then rationally designed according to the available space. The reflector is then installed in the corresponding position on the mounting base, allowing the operator to see the blind spot of the filter nozzle's centering drum's smoke-bearing groove through the reflector during manual rotation, thereby improving maintenance time.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] The filter nozzle centering drum auxiliary observation device provided by this invention, combined with the characteristics of the machine model, sets a reflective element on the inner wall of the machine. According to the law of reflection of light, the position of the operator's eyes when rotating the machine is used as the fault observation point. The blind spot can be observed through the reflective element, thereby reducing maintenance time and helping to improve equipment operating efficiency. Attached Figure Description

[0024] Figure 1 Diagram showing the status of the filter nozzles in each functional drum during installation;

[0025] Figure 2 This is a schematic diagram of the filter nozzle centering drum.

[0026] Figure 3 This is a schematic diagram of the installation of the auxiliary observation device for the filter nozzle alignment drum in Example 1;

[0027] Figure 4 This is a schematic diagram of the auxiliary observation device for the filter nozzle alignment drum in Example 1;

[0028] Figure 5 This is a front view of the auxiliary observation device for the filter nozzle alignment drum in Example 1;

[0029] Figure 6 This is a top view of the auxiliary observation device for the filter nozzle alignment drum in Example 1;

[0030] Figure 7 This is a horizontal view of the filter tip centering drum in Example 1;

[0031] Figure 8 This is a schematic diagram of the light reflection principle in Example 1;

[0032] Figure 9This is a schematic diagram showing the relative positions of the screw hole and the filter nozzle centering drum.

[0033] Figure 10 This is a horizontal view of the filter tip centering drum in Example 2;

[0034] Figure 11 This is a schematic diagram of the light reflection principle in Example 2;

[0035] Figure 12 for Figure 11 A magnified view of a section at point I;

[0036] Figure 13 This is a schematic diagram showing the relative positions of the mounting base screw holes and the filter nozzle alignment drum in Example 2;

[0037] Figure 14 This is a front view of the auxiliary observation device for the filter nozzle alignment drum in Embodiment 2;

[0038] Figure 15 This is a top view of the auxiliary observation device for the filter nozzle alignment drum in Example 2.

[0039] Figure label:

[0040] 1-Filter tip material storage; 2-Filter tip cutting drum; 3-Filter tip arranging drum; 4-Filter tip centering drum; 41-Smoke receiving groove; 42-Inner end face; 43-Outer end face; 5-Filter tip receiving drum; 6-Smoke separation drum; 7-Mounting base; 71-First screw hole; 72-Second screw hole; 8-Reflector; 81-Mirror support; 82-Reflector; 9-Machine inner wall. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.

[0042] Example 1

[0043] like Figure 3-4 As shown, this embodiment provides an auxiliary observation device for the filter nozzle alignment drum of a connector, which includes: a mounting base 7 and a reflector 8. The mounting base 7 is a cuboid in shape and is fixed to the inner wall 9 of the machine by two screws. It is located on one side of the filter nozzle alignment drum 4 and below the filter nozzle arrangement drum 3. Its installation position is slightly higher than the center position of the filter nozzle alignment drum 4.

[0044] like Figure 5-6As shown, the reflector 8 is mounted on the mounting base 7 at an angle. It includes a mirror support 81 and a reflector 82. The mirror support 81 is made of aluminum alloy and includes a horizontal connecting part for connecting the mounting base 7 and an inclined mounting part for mounting the reflector 82. The inclined mounting part forms an angle α with the inner wall 9 of the machine (the deflection angle between the mirror and the inner wall 9 of the machine) and an angle β with the horizontal plane (the deflection angle of the horizontal plane), so that the reflector 82 can display the image of the filter nozzle in the blind spot of the smoke trough 41 of the middle drum 4, so as to facilitate maintenance by the operator.

[0045] Preferably, in this embodiment, taking the GD121-AF12 assembly machine as an example, the deflection angle α between the mirror and the inner wall 9 of the machine is 18.25°, and the horizontal deflection angle β is 15°. The analysis process is as follows:

[0046] First, determine the horizontal deflection angle β. For example... Figure 7-8 As shown, A is selected as the blockage point, O as the mirror reflection point, and B as the observation point (this point is horizontally outward along the direction of the smoke collection groove from the blockage point, 130mm away from the machine protective cover). The angle bisector O1O of ∠PO1Q is the normal. O1 is the center of the filter centering drum. S is the intersection of the center point of the filter centering drum 4 along the tangent direction of the filter arrangement drum 3 and the inner wall 9 of the machine. T is the intersection of the center point of the filter centering drum 4 along the horizontal radial direction and the inner wall 9 of the machine. U is a point on the extension line of the tangent point of the outermost contour line of the filter guide along the center point of the filter centering drum 4. M is the intersection of the center point of the filter centering drum 4 along the horizontal radial direction and the outer diameter of the filter centering drum 4. To achieve the best observation effect, the mirror surface of the reflector 82 will always be perpendicular to the plane passing through the angle bisector O1O of ∠PO1Q. Measurements show that the radius R of the filter nozzle centering drum 4 is 105mm, the chord length PQ is 25mm, and the chord length QM is 15mm. Setting O as the reflection point position (O being the exact center of the mirror's length and width), measurements show ON = 180mm.

[0047] Based on the calculation of chord length and central angle It can be deduced that:

[0048]

[0049]

[0050] ∠OO1N=∠QO1M+∠PO1Q / 2=15.0259°≈15°

[0051]

[0052] OR=OO1-O1R=186.35-105=81.35mm

[0053] The mirror should be perpendicular to a plane (plane OO1O2) at a 15° angle to the horizontal plane to maximize the observation of the fault point.

[0054] Then determine the deflection angle α between the mirror and the inner wall of the machine: Figure 4 In this calculation, the observer's viewing angle is optimal when the fault point, the center point of the mirror, and the observation point are all located on a plane passing through OD and perpendicular to plane OAB. Therefore, the angle ∠OFD between the mirror and the support needs to be calculated. Measurements show CD = 210mm, CE = 170mm, AE = 130mm, and DA = 16mm. For ease of calculation, let ∠FOG be α. Since α + ∠OFD = 180°, calculating α will give us ∠OFD. The mirror length is 40mm, therefore OF = 20mm.

[0055]

[0056]

[0057]

[0058]

[0059]

[0060] By the Law of Cosines

[0061] The value of ∠AOB can be calculated.

[0062]

[0063] According to the law of reflection of light, And OH⊥FI.

[0064] That is, ∠AOH + ∠AOG + α = 90°, and here, the method of gradual interpolation approximation is used for calculation.

[0065] Assuming α represents 0°, 30°, 60°, and 90°, calculate the corresponding values ​​of α + ∠AOG + ∠AOH. It is verified that when 17.5° < α < 18.75°, the difference between α + ∠AOG + ∠AOH and 90° is small. By interpolating the median during this period and calculating step-by-step, we finally find the value corresponding to α + ∠AOG + ∠AOH = 90°.

[0066] Table 1. Correspondence between α and related parameters

[0067]

[0068] Here, the corresponding α is 18.25°, and the value of α + ∠AOG + ∠AOH is closest to 90°. Accordingly, the corresponding ∠OFD = 161.75°.

[0069] Calculations show that the designed mirror should be tilted at 18.25° to the inner wall of the machine.

[0070] Finally, the position of mounting bracket 7 was determined: after measurement, it was found that... Figure 9 On the O1O line shown, OV = 130mm, VW = 6mm, and WX = 38mm. The positions of the first screw hole 71 and the second screw hole 72 are the fastening positions between the mirror and the mounting base 7. The mounting base 7 is tightly fitted to the inner wall 9 of the machine, and the mirror support 81 and the mounting base 7 are intersected in space, with the mirror support 81 partially extending to combine with the mounting base 7 into a single part.

[0071] The improved GD121 cigarette making unit has added an auxiliary observation device to help operators troubleshoot filter tip blockage in the filter tip center drum 4, effectively reducing troubleshooting and cleaning time. Tests were conducted using Yunyan "Zi" brand cigarettes produced by the GD121 cigarette making unit as an example. Results showed that after the improved equipment experienced cigarette dropping due to filter tip blockage in the filter tip center drum 4, manual cleaning time was reduced to 3.2 minutes per cleaning cycle, maintenance time was reduced by 67%, equipment operating efficiency was improved, and the cleaning was thorough, reducing the frequency of filter tip blockage in the filter tip center drum 4 recurring after cleaning.

[0072] Example 2

[0073] In this embodiment, taking the GD121P-16K assembly machine as an example, the deflection angle α between the mirror and the inner wall 9 of the machine is 3°, and the horizontal deflection angle β is 26.7°. The analysis process is as follows:

[0074] Select A as the blockage point, O as the specular reflection point, and B as the observation point (this point is located horizontally outward from the blockage point along the smoke collection groove, 350mm from the outer end face of the drum). ∠PO1Q is the angle between the length direction of the observation mirror and the horizontal direction. O1 is the center of the filter tip aligned with the drum. For example... Figure 10 As shown, due to the very small space between the filter tip, the center drum, the guide strip, and the dust collection tray, the optimal placement of the auxiliary observation mirror is... Figure 10 On the line connecting O1P. For best viewing results, the mirror should always be perpendicular to the plane passing through O1P. After measurement, O is set as the reflection point position (O should be the center of the mirror's length and width).

[0075] Figure 10 In this context, the law of cosines can be used to calculate the angle of deflection of the mirror's center line relative to the horizontal plane, from which the following can be derived:

[0076]

[0077] As can be seen from the above formula, the mirror should be perpendicular to the plane (plane OO1O2) at an angle of 26.7° to the horizontal plane in order to observe the fault point to the greatest extent.

[0078] Angle of deflection between mirror and machine inner wall

[0079] Figure 11-12 In this study, the observer's viewing angle is optimal when the fault point, the center point of the mirror, and the observation point are all located on a plane passing through OD and perpendicular to plane OAB. Therefore, the angle ∠OFD between the mirror and the support needs to be calculated. The mirror length is 36mm, half of the mirror is 18mm, and the mirror width is 20mm. Measurements show AD = 260mm, OP = 120mm, CO2 = 100mm, O1O2 = 370mm, and CB = 350mm.

[0080] For ease of calculation, let the angle of ∠FOG be α. Since α + ∠OFD = 180°, we can calculate α to know ∠OFD.

[0081]

[0082]

[0083]

[0084]

[0085] By the Law of Cosines The value of ∠AOB can be calculated.

[0086]

[0087] According to the law of reflection of light, And OH⊥FI, that is, ∠AOH+∠AOG+α=90°. Here, the method of gradual interpolation approximation is used for calculation.

[0088] Assuming α represents 0°, 30°, 60°, and 90°, calculate the corresponding values ​​of α + ∠AOG + ∠AOH. It is verified that when 2° < α < 4°, the difference between α + ∠AOG + ∠AOH and 90° is small. During this period, the median is interpolated, and calculations are performed step-by-step to finally find the value of α when α + ∠AOG + ∠AOH = 90°.

[0089] Table 2 shows the correspondence between relevant parameters.

[0090]

[0091] Here, when α is 3°, the corresponding α + ∠AOG + ∠AOH is closest to 90°. Correspondingly, the corresponding ∠OFD = 177°.

[0092] Calculations show that the designed mirror should be tilted at 3° to the inner wall of the machine.

[0093] Design of mirror support components

[0094] Drill holes on the inner wall of the equipment, 2.5 mm in diameter, at 25 mm and 35 mm below the line connecting the filter nozzle to the center of the drum at 116 mm.

[0095] The support component is a trapezoidal sheet 16mm wide and 4mm thick, which is connected to the mirror support component. It has two holes with a diameter of 2.5mm, spaced 10mm apart.

[0096] The above examples illustrate the present invention only to aid in understanding it and are not intended to limit the scope of the invention. Those skilled in the art can make various simple deductions, modifications, or substitutions based on the principles of this invention.

Claims

1. An auxiliary observation device for aligning filter nozzles on a filter assembly machine, characterized in that, include: The reflector is located on the inner wall of the machine and is inclined as a whole. Its reflective plane is perpendicular to the axis of the filter nozzle centering drum and forms an angle α with the inner wall of the machine and an angle β with the horizontal plane. The image of the inner end face of the filter nozzle centering drum smoke-bearing groove is formed on the reflective plane, and the midpoint of the image is located at the center of the reflective plane. The mounting base is installed on the inner wall of the machine and located on the side of the filter nozzle centering drum; the reflector is installed on the mounting base; The horizontal distance between the screw hole on the mounting base near the center of the filter nozzle centering drum and the center of the filter nozzle centering drum is 125.57 mm; 17.5° < α < 18.75°, β = 15°; The mounting base is positioned higher than the center of the filter nozzle centering drum; The reflector includes: Mirror support components; A reflector, mounted on a mirror support, is used to form an image of the filter tip's center drum smoke groove; The mirror support includes a horizontal connecting part and an inclined mounting part for mounting the reflector, wherein the inclined mounting part forms an angle α with the inner wall of the machine and an angle β with the horizontal plane.

2. The auxiliary observation device for the filter nozzle alignment drum of the assembly machine as described in claim 1, characterized in that, The mounting base is rectangular, and its side is connected to the inner wall of the machine.

3. The auxiliary observation device for the filter nozzle alignment drum of the assembly machine as described in claim 1, characterized in that, The reflector is a plane mirror or a convex mirror.

4. An auxiliary observation device for aligning filter nozzles on a connector, characterized in that, include: The reflector is located on the inner wall of the machine and is inclined as a whole. Its reflective plane is perpendicular to the axis of the filter nozzle centering drum and forms an angle α with the inner wall of the machine and an angle β with the horizontal plane. The image of the inner end face of the filter nozzle centering drum smoke-bearing groove is formed on the reflective plane, and the midpoint of the image is located at the center of the reflective plane. The mounting base is installed on the inner wall of the machine and located on the side of the filter nozzle centering drum; the reflector is installed on the mounting base; The horizontal distance from the central axis of the mounting base to the center of the filter nozzle centering drum is 116 mm, 2° < α < 4°, β = 26.7°; The mounting base is positioned higher than the center of the filter nozzle centering drum; The reflector includes: Mirror support components; A reflector, mounted on a mirror support, is used to form an image of the filter tip's center drum smoke groove; The mirror support includes a horizontal connecting part and an inclined mounting part for mounting the reflector, wherein the inclined mounting part forms an angle α with the inner wall of the machine and an angle β with the horizontal plane.

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