Cigarette strip output limiting device
By designing a smoke strip output limit device driven by gravity, the rebound and inaccurate positioning problems during smoke strip output are solved, and the stable operation and production efficiency of the equipment are improved.
Patent Information
- Application Number
- CN202421761278.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-07-24
AI Technical Summary
During the cigarette production process, the smoke strips are rebounded and positioned inaccurately when they are output, resulting in a deviation of the path when the smoke strip is pushed on, causing blockage, affecting the production efficiency of the equipment, and frequent smoke jamming, damaging the cylinders and smoke strips, and reducing production efficiency.
A smoke strip output limiting device is designed, including a bracket, roller seat, swing block and roller. The movement of the swing block is driven by gravity, and the stop-ret limiting function is realized through the joint cooperation between the stop-ret arm and the groove of the roller seat to avoid the rebound of the smoke strip.
Effectively prevent smoke strips from rebounding, reduce the number of smoke stuck, reduce equipment damage and repair times, improve production efficiency, and achieve maintenance-free design.
Smart Images
Figure CN223162083U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of cigarette production equipment, in particular to a cigarette bar output limiting device. Background Technique
[0002] The YB95 transparent paper packaging machine is an auxiliary part of the ZB45 packaging unit, mainly completing the packaging of cigarette bars with transparent paper and outputting them to the large box machine channel. In response to the country's call for energy conservation and emission reduction, some cigarette specifications of our company omit the packaging link of the strip box trademark paper and directly use the "coated packaging film" for strip box packaging. During the production process of the above cigarette products, when the cigarette bars are output, they bounce back and the positioning is inaccurate, resulting in the path deviation of the push plate when pushing the cigarette bars, causing blockage, and quality defects such as cigarette package deformation or cigarette bar breakage, affecting the production efficiency of the equipment. Currently, the above situation occurs in all 5 sets of equipment for producing cigarettes without strip boxes. After statistics, the average number of cigarette jams per single shift of the 5 sets of equipment reaches 15 times within 1 month of operation time, resulting in 2 cylinder damages, a large number of cigarette bars being scratched and damaged, an average of 48 minutes of production being affected per shift, and a 10% reduction in production efficiency. Content of the Utility Model
[0003] The purpose of the utility model is to design a cigarette bar output limiting device to solve the above problems.
[0004] The utility model realizes the above purpose through the following technical solutions:
[0005] The utility model provides a cigarette bar output limiting device, including a bracket, a roller seat, a swing block, and rollers. The bracket is detachably connected to the upper end of the roller seat, the swing block is rotatably connected to the lower end of the roller seat, and the rollers are connected to the lower end of the swing block.
[0006] As a preference of the utility model, a retaining arm is arranged at the upper end of the swing block, a groove is arranged at the lower end of the roller seat, and the retaining arm cooperates with the groove to prevent the swing block from swinging to the right, thus playing a function of retaining and limiting the cigarette bars.
[0007] The beneficial effects of the utility model are as follows:
[0008] 1. The design structure is simple, the installation is convenient, and it uses gravity to swing back naturally without additional power; the pure mechanical structure design is stable and reliable.
[0009] 2. It is processed by aluminum alloy, which is economical and practical. At the same time, since the movement of the swing block can be well completed only by gravity, there is no need to add additional power such as a tension spring, eliminating equipment damage caused by other power and reducing the number of repairs, in order to achieve a maintenance-free design.
[0010] 3. After adding the limit device, the number of cigarette jams during the cigarette bar conveying process is reduced from the original average of 15 times per shift to 0 times, reducing product loss and equipment downtime. The movement of the swing block can complete the work well only by gravity, so there is no need to add additional power such as a tension spring, eliminating equipment damage caused by other power sources and also reducing the number of repairs, with the aim of achieving a maintenance-free design. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic structural diagram of the cigarette bar output limit device of the present utility model.
[0012] Figure 2 It is an exploded schematic structural diagram of the cigarette bar output limit device of the present utility model.
[0013] Figure 3 It is a working schematic diagram of the cigarette bar output limit device of the present utility model Figure 1 .
[0014] Figure 4 It is a working schematic diagram of the cigarette bar output limit device of the present utility model Figure 2 .
[0015] Figure 5 It is a schematic diagram of the installation dimensions of the cigarette bar output limit device of the present utility model.
[0016] Figure 6 It is a diagram of the swing arc of the roller when the dimension C of the cigarette bar output limit device of the present utility model is 38 mm.
[0017] Figure 7 It is a diagram of the swing arc of the roller when the dimension C of the cigarette bar output limit device of the present utility model is 39 mm.
[0018] Figure 8 It is a schematic structural diagram of the bracket in the cigarette bar output limit device of the present utility model.
[0019] Figure 9 It is a schematic structural diagram of the roller seat in the cigarette bar output limit device of the present utility model.
[0020] In the figure: 1 - bracket, 2 - roller seat, 3 - swing block, 4 - roller, 5 - anti-retreat arm, 6 - groove, 7 - safety interlock guard, 8 - rejection baffle, 9 - long slot, 10 - square slot, 11 - adjustment slot. DETAILED DESCRIPTION OF THE INVENTION
[0021] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the drawings here can be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.
[0023] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0024] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present utility model is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.
[0025] In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.
[0026] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, terms such as "set", "connect" should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0027] The following will specifically describe the embodiments of the present utility model in detail with reference to the accompanying drawings.
[0028] Embodiment 1
[0029] As shown in the atta Figure 1-2As shown in the figure, this embodiment provides a cigarette bar output limiting device, which includes a bracket 1, a roller seat 2, a swing block 3, and a roller 4. The bracket 1 is detachably connected to the upper end of the roller seat 2. The swing block 3 is rotatably connected to the lower end of the roller seat 2. The roller 4 is connected to the lower end of the swing block 3. A backstop arm 5 is provided at the upper end of the swing block 3, and a groove 6 is provided at the lower end of the roller seat 2. The backstop arm 5 cooperates with the groove 6 to prevent the swing block 3 from swinging to the right, thereby achieving the function of stopping and limiting the cigarette bar.
[0030] The bracket 1 is installed on the safety protection cover 7. In addition to the fixing device, it is also used to adjust the distance between the roller 4 and the rejection baffle 8. Therefore, a long groove of R2.75*25mm is machined at the left end of the bracket 1 to facilitate adjusting the installation position to adapt to the positions of cigarette bars of different devices. A groove of 14*4mm is opened on the right side for installing the roller seat 2 to position the roller seat 2. A screw hole of M5*17mm is machined at the bottom of the groove for fixing the roller seat 2.
[0031] The roller seat 2 is an important part for supporting the swing block 3. The roller seat 2 is processed from aluminum alloy. The swing block 3 is connected below the roller seat 2, and a groove 6 is opened at its lower part for fixing the swing block 3.
[0032] The swing block 3 is processed from aluminum alloy, which not only ensures the normal conveyance of the cigarette bar but also ensures the function of stopping the retreating cigarette bar. The fixing bolt connects the roller seat 2 and the swing block 3. It is necessary to ensure the flexible rotation of the swing block 3. The bottom and middle of the fixing bolt are not tapped to ensure that while the nut is tightened, no pressure is applied to the connection between the roller seat 2 and the swing block 3, resulting in inflexible rotation of the swing block 3.
[0033] The state of the cigarette bar limiting device during operation is as Figure 3-4 shown. Taking one cycle of cigarette bar conveyance as an example, the cigarette bar limiting device has two working states: the cigarette bar passes through the limiting device ( Figure 3 ), and the roller 4 stops the retreating cigarette bar ( Figure 4 ).
[0034] 1. The cigarette bar passes through the limiting device:
[0035] When the cigarette bar is conveyed on the conveyor belt to below the limiting device, the roller 4 and the swing block 3 on the limiting device are lifted by the cigarette bar, and the cigarette bar can smoothly pass below the positioner and reach the position of the rejection baffle 8 (as Figure 3 shown).
[0036] 2. The roller 4 stops the retreating cigarette bar:
[0037] When the cigarette bar completely passes through the limiting device, the roller 4 and the swing block 3 of the limiting device swing downward naturally under the action of gravity. The rebounding cigarette bar hits the limiting device. Since the swing block 3 of the limiting device has a backstop arm 5 (see Figure 8) When the swing block 3 cannot swing to the right, the roller 4 limits the cigarette rod (as Figure 4 shown).
[0038] 3. Determination of key dimensions of important parts.
[0039] (1) Determination of installation dimensions of the limiting device
[0040] The height dimension B of the cigarette rod (see Figure 5 ) is 45 mm. The limiting device is fixedly connected to the safety interlock guard 7 through the bracket 1. The distance A from the lower surface of the safety interlock guard 8 to the upper surface of the conveyor belt (this distance varies among different machines). After measurement, the dimension of A is 95 mm - 105 mm. The installation height of the device is determined by the installation dimension C of the lower surface of the roller 4 from the upper surface of the conveyor belt. The installation dimension C is very important. If the dimension is too large, the effect of limiting the rebound of the cigarette rod is poor; if the distance dimension is too small, the effect of rebound limiting is good, but the damage (indentation) of the limiting device roller 4 to the cigarette rod is obvious. After many tests, the influence of the size of the installation dimension C on the anti-retreat effect of the cigarette rod is shown in Table 1:
[0041]
[0042] Table 1. Comparison table of installation height dimension C data
[0043] According to the experiment, when the installation dimension C is 38 mm to 39 mm, the failure rate of the device is 0, and the damage (indentation) rate of the cigarette rod is also 0, and the function can be realized perfectly.
[0044] This dimension also affects the swing amplitude of the swing block 3 and the roller 4. The larger the swing amplitude, the longer the swing distance H of the roller 3 (see Figure 7 ), and the larger the distance E between the installed roller 4 and the rejection baffle 8. If the dimension of E is too large, the anti-retreat function will fail.
[0045] When the dimension of C is 38 mm (as Figure 6 ), the angle of the swing arc of the roller is 60°;
[0046] When the dimension C is 39 mm (as Figure 7 ). The angle of the swing arc of the roller is 48°.
[0047] It can be seen that the smaller the dimension of C, the larger the swing amplitude of the roller 4, and the more time the roller 4 needs to return to its position, but the better the limiting effect. At the same time, the larger the swing amplitude, the more work the device does, the greater the damage to the device, and the shorter the service life. Therefore, the installation dimension of C is selected as 39 mm.
[0048] The length dimension D of the cigarette rod (see Figure 5) is 280mm. The installation width E between the rejection baffle 8 and the roller 4 of the limit device affects the realization of the positioning function. During actual production, if the size of the installation width E is too small, the roller 4 cannot swing downward after the cigarette rod arrives, and the limit of the cigarette rod cannot be realized. If it is too large, the impact force on the roller 4 after the cigarette rod rebounds will be too large, resulting in defects in the cigarette pack indentation.
[0049] Based on the determination that the installation dimension C is 39mm, and after measuring that the swing angle of the roller 4 is 48°, the size of E can be calculated: C = 39mm; H = sin48° * G = 0.743 * 30 = 22mm; E = 280 + 22.2 = 302mm
[0050] That is, the minimum installation dimension of E is 302mm. During actual production, the outer packaging of the transparent paper cigarette rod produced is not a regular cuboid, and its shape is slightly fluffy. If the installation dimension E is 302mm, the backswing will surely fail. In order to find the appropriate installation dimension E, through experiments, the results are shown in Table 2:
[0051] Mounting dimension E (mm) Functional failure rate Oscillation failure rate 302 0 20％ 303 0 9％ 304 0 0 305 0 0 306 3％ 0 307 20％ 0
[0052] Table 2. Data comparison table of installation width dimension E
[0053] When the size of E is 306mm, that is, when the cigarette rod rebounds 26mm, the function fails. As the size increases, the failure rate is higher; when the size is 303mm, the swing block 3 cannot swing normally. As the size decreases, the swing failure rate is higher. When the pusher plate pushes the cigarette rod, the swing block 3 does not return to its position and applies pressure to the cigarette rod, causing damage to the cigarette rod. When the size is between 304mm and 305mm, the limit of the cigarette rod can be realized well, and the cigarette rod will not be damaged due to the backswing failure of the swing block 3. On the premise of ensuring the function, a smaller size is selected. Therefore, the designed installation dimension E is determined to be 304mm.
[0054] To sum up: the installation height dimension C of the limit device is 39mm; the installation width dimension E is 304mm
[0055] According to the above measurement data, due to the different heights of the safety guard, in order to ensure the realization of the function of the anti-reverse device, the roller seat needs to be machined with an adjustment groove (13 * R2.6 waist groove) to adjust the height of the device. To cooperate with the anti-reverse function of the swing block, a 23mm groove is machined at the upper part of the through groove to cooperate with the anti-reverse arm of the swing block to realize the limit function
[0056] The swing block draws on the principle of a check valve and is designed as a fork-shaped part. The hole with a diameter of Φ5.2 at the lower end is used to fix the roller. There is a hole with a diameter of Φ4 above, which is connected to the roller seat through a bolt. The swing block swings around the hole with a diameter of Φ4. There is a 11-mm anti-retreat arm at the top, which cooperates with the groove on the roller seat to prevent the swing block from swinging to the right, playing a function similar to that of a check valve, allowing the cigarette rod to pass only in one direction.
[0057] The structure of this limit device is simple and highly reliable. The conveying speed of the cigarette rod by the device is 40 pieces per minute. The movement of the swing block can complete the work well only by gravity. Therefore, there is no need to add additional power such as a tension spring, eliminating equipment damage caused by other power sources and reducing the number of repairs, in order to achieve a maintenance-free design.
[0058] Although the present invention has been described herein with reference to illustrative embodiments thereof, the above embodiments are only the preferred embodiments of the present invention. The embodiments of the present invention are not limited by the above embodiments. It should be understood that those skilled in the art can design many other modifications and embodiments, which will fall within the scope and spirit of the principles disclosed in this application.
Claims
1. A cigarette rod output limiting device, characterized in that: It includes a bracket (1), a roller seat (2), a swing block (3), and a roller (4). The bracket (1) is detachably connected to the upper end of the roller seat (2). The swing block (3) is rotatably connected to the lower end of the roller seat (2). The roller (4) is connected to the lower end of the swing block (3).
2. The cigarette bar output limiting device according to claim 1, wherein: A backstop arm (5) is provided at the upper end of the swing block (3), and a groove (6) is provided at the lower end of the roller seat (2). The backstop arm (5) cooperates with the groove (6).
3. The cigarette rod output limiting device according to claim 1, characterized in that: Both the roller seat (2) and the swing block (3) are machined from aluminum alloy.
4. The cigarette bar output limiting device according to claim 1, characterized in that: The bracket (1) and the roller seat (2) are connected by bolts.
5. The cigarette rod output limiting device according to claim 1, characterized in that: The roller seat (2) and the swing block (3) are connected by a fixing bolt, and the bottom and middle of the fixing bolt are not tapped to ensure the flexible rotation of the swing block (3).
6. The cigarette rod output limiting device according to claim 1, wherein: The installation dimension C is the installation height of the cigarette rod output limiting device, which is the distance between the lower surface of the roller (4) and the upper surface of the conveyor belt. The size of the installation dimension C is 39 mm.
7. The cigarette bar output limiting device according to claim 1, characterized in that: The installation width E is the distance between the rejection baffle (8) and the roller (4). The size of the installation width E is 304 mm.
8. The cigarette rod output limiting device according to claim 1, characterized in that: The bracket (1) is installed on the safety protection cover (7). A long groove (9) with dimensions of R2.75*25 mm is machined at the left end of the bracket (1) to facilitate the adjustment of the installation position; A square groove (10) with dimensions of 14*4 mm is opened on the right side for installing the roller seat (2) to position the roller seat (2). A screw hole with dimensions of M5*17 mm is machined at the bottom of the groove for fixing the roller seat (2).
9. The cigarette bar output limiting device according to claim 1, wherein: The roller seat (2) is provided with an adjustment groove (11). The adjustment groove (11) is a waist-shaped groove with dimensions of 13*R2.6 for freely adjusting the height of the device.
10. The cigarette bar output limiting device according to claim 1, wherein: The swing block (3) is designed as a fork-shaped part. A hole with a diameter of Φ5.2 is opened at the lower end for fixing the roller (4), and a hole with a diameter of Φ4 is opened above for connection with the roller seat (2) by a bolt.