Drum wheel conveying device suitable for various cigarette specifications

Abstract

The drum wheel conveying device comprises a set of negative pressure conveying wheels axially distributed between a feeding device and a discharging device in parallel, at least two cigarette suction grooves of different specifications are distributed in the circumference of each negative pressure conveying wheel at intervals, and the cigarette suction grooves are used for sucking and conveying cigarettes of different specifications. The cigarette suction grooves of the same specification on the adjacent negative pressure conveying wheels rotate and approach to complete suction conveying of cigarettes, each negative pressure conveying wheel comprises an airflow distribution drum and a drum-shaped wheel, the airflow distribution drum is fixedly connected with negative pressure equipment through a pipeline, the drum-shaped wheel is connected with power equipment, the outer side of the airflow distribution drum is sleeved with the drum-shaped wheel, and the gap d between the outer face of the airflow distribution drum and the inner face of the drum-shaped wheel is 0.05 mm-1. 4mm.

Description

Technical Field

[0001] The invention relates to a transmission device, in particular to a drum transmission device suitable for various cigarette specifications, belonging to the technical field of cigarette transmission. Background Art

[0002] The inventor's Chinese authorized invention patent CN110907309A - a dynamic suction resistance simulation molding device for multiple specifications of cigarettes, discloses a device that can simultaneously meet the transmission and punching of multiple specifications of cigarettes. It uses an airflow distribution disk set at the end of the transmission drum to distribute the negative pressure airflow, and combines the negative pressure control valve and the servo motor to achieve the switching of multiple specifications. It has certain advancement and feasibility. The surface of the end distribution disk is provided with different negative pressure airflow grooves for the distribution of negative pressure, but due to the limitation of the drum diameter, the negative pressure airflow groove is relatively small, so it is impossible to provide sufficient adsorption pressure for multiple cigarette slots at the same time, which is easy to cause cigarette blockage, cigarette flying and other problems. Therefore, this solution is suitable for occasions with a small transmission drum diameter and a low machine running speed.

[0003] Further search revealed that Chinese utility model CN202322785447 - A partitioned drum wheel structure and drum wheel assembly, discloses a method of setting a mechanical rotary switch in the negative pressure suction channel corresponding to the cigarette slot of the transmission drum wheel, and providing an air flow channel in the switch, and rotating the switch to realize the on-off control of the channel, thereby determining whether the cigarette slot can adsorb cigarettes of different specifications. Although this method is suitable for a wide range of applications, when changing the cigarette specifications, the control valves corresponding to all cigarette slots must be manually adjusted one by one, which is labor-intensive and error-prone, and not convenient and quick enough. Summary of the invention

[0004] The purpose of the present invention is to propose a drum transmission device suitable for various cigarette specifications in view of the problems existing in the above-mentioned prior art.

[0005] In order to achieve the above purpose, the present invention discloses a drum wheel transmission device suitable for multiple cigarette specifications, including a group of negative pressure transmission wheels axially parallelly distributed between a feeding device and a discharging device, the circumference of the negative pressure transmission wheel is spaced apart with at least two different specifications of cigarette suction grooves, which are used to absorb and transmit cigarettes of different specifications, and the same specifications of cigarette suction grooves on adjacent negative pressure transmission wheels rotate close to each other and complete the absorption and transmission of cigarettes, and the negative pressure transmission wheel includes an airflow distribution drum fixedly connected to the negative pressure device through a pipeline and a drum wheel connected to the power device, and the drum wheel is sleeved on the outside of the airflow distribution drum, characterized in that: the gap between the outer surface of the airflow distribution drum and the inner surface of the drum wheel is d, d=0.05mm-1.4mm. In this way, the negative pressure in the airflow channel and distribution groove of specification 1 will not or only a small amount of negative pressure will be transmitted to the airflow distribution groove of specification 2 through the gap, and will not affect the absorption of cigarettes of specification 1. And the negative pressure in the airflow channel and distribution groove of specification 2 will not or only a small amount of negative pressure will be transmitted to the airflow distribution groove of specification 1 through the gap, and will not affect the absorption of cigarettes of specification 2.

[0006] The preferred embodiment of the present invention is: Further preferably, two types of cigarette suction grooves, namely, A cigarette suction groove and B cigarette suction groove, are evenly distributed on the outer side of the circumference of the drum-shaped wheel. The bottoms of the A cigarette suction groove and the B cigarette suction groove are respectively provided with an air suction groove and an A suction channel and a B suction channel that pass through the inner side wall of the drum-shaped wheel and the air suction groove. The A suction channel and the B suction channel are respectively connected to a specific negative pressure groove of the airflow distribution drum; The air flow distribution drum is a hollow circular drum, and its circumference is provided with an A air flow distribution slot and a B air flow distribution slot corresponding to the A suction channel and the B suction channel respectively; The A airflow distribution groove is a penetrating groove that runs through the circumferential side wall of the airflow distribution drum. The A airflow distribution groove is connected to the A suction channel through a perforated groove. The A airflow distribution groove, the A suction channel, i.e., the hollow space of the airflow distribution drum, and the A negative pressure source are connected to form the A airflow channel; in this way, the matching gap d between the drum wheel and the connecting flange, and the drum wheel and the airflow distribution drum is utilized, and the above-mentioned devices are combined to form an A suction channel with a simple structure.

[0007] The B air flow distribution groove is a non-penetrating open groove along the circumferential side wall of the air flow distribution drum. The B suction channel is a closed channel or channel that connects the B air flow distribution groove and extends axially to the bottom of the air flow distribution drum to connect to the B negative pressure source. The B air flow distribution groove, the B suction channel and the B negative pressure source are connected to form the B air flow channel.

[0008] In this way, the B airflow distribution groove and the B air suction channel are respectively arranged on the side wall of the airflow distribution drum, so as to form a double airflow layer, forming two isolated and independent negative pressure airflow channels.

[0009] Further preferably, the A airflow channel and the B airflow channel are controlled as follows: when the A specification cigarette is being sucked, the B negative pressure source is not working, and the A cigarette is adsorbed in the A cigarette suction slot through the A suction hole of the suction slot corresponding to the A airflow distribution slot, and then connected to the A negative pressure source through the A airflow channel.

[0010] When the B specification cigarettes are working, the A negative pressure source is not working. The B cigarettes are adsorbed in the B cigarette suction slot through the B suction holes of the suction slot corresponding to the B airflow distribution slot, and then connected to the B negative pressure source through the B airflow channel.

[0011] Further preferably, the B airflow distribution groove is a non-penetrating open groove disposed on the outer side wall of the airflow distribution drum, or penetrates the side wall of the drum to connect to the B negative pressure channel at the bottom of the distribution groove, or the B airflow distribution groove is disposed on the outer wall of the drum and is connected to the B negative pressure channel also disposed on the outer wall of the drum, and the B negative pressure channel further comprises a B cover plate, which is used to cover the surface of the B negative pressure channel. In this way, the open exposed area of ​​the B negative pressure channel is isolated from the A suction channel of the drum wheel to prevent the generation of disorder in the negative pressure airflow distribution.

[0012] Further preferably, the B cover plate covers the cigarette adsorption starting line of the B airflow distribution slot flush with the cigarette adsorption starting line of the A airflow distribution slot. In this way, the position where the drum wheel and the front and rear drum wheels and the feeding or discharging device are connected for cigarette transmission is kept near the point where the central axis of the drum wheel is connected.

[0013] Further preferably, it also includes a main encoder, a servo motor and a secondary encoder. The servo motor drives the connecting flange through the power shaft and then drives the drum wheel to rotate. The secondary encoder is arranged at the shaft end of each servo motor or connected to the servo motor through a transmission pair. The main encoder is connected to the transmission of the feeding device, and its preset angle a or b corresponds to the phase of cigarette A or cigarette B respectively.

[0014] Further preferably, when the A-size cigarettes are set to run, the main encoder reaches a preset angle a and controls the servo motor to deflect, so that the A-size cigarette slot of each drum wheel corresponds to the A-size cigarettes from the feeding device. When the B-size cigarettes are set to run, the main encoder reaches a preset angle b and controls the servo motor to deflect, so that the B-size cigarette slot of each drum wheel corresponds to the B-size cigarettes from the feeding device.

[0015] The beneficial effects of the present invention are as follows: ① The A / B airflow transmission channels can both have a larger cross-sectional area, and the resistance of negative pressure airflow transmission is small, which is particularly suitable for the transmission of high-speed cigarette drum wheels.

[0016] ② The cigarette specifications can be adjusted and controlled through the electrical unit, without the wear and failure of mechanical adjustment control, which is quick and convenient.

[0017] ③ By setting the deflection servo motor, the phase of the A / B cigarette slot of the drum wheel and the A / B cigarette can be matched. At the same time, by closing or opening the negative pressure source A / B or closing or opening the electromagnetic valve corresponding to the negative pressure source A / B, the negative pressure in the A / B cigarette slot can be controlled, and then the A / B cigarette slot can adsorb the A / B cigarettes respectively. Therefore, the adjustment of the cigarette specifications is all electrical setting adjustment, which is simple and fast.

[0018] ④ The focus of adjusting cigarette specifications is placed on the combination of mechanical airway design and electrical control of the airflow distribution drum, rather than simply mechanically setting or controlling it on a rotating drum wheel. The airflow distribution drum is fixed on the wall panel, so there are no moving parts involved in the implementation process. The principle is simple and the control action is reliable, which reduces the difficulty of controlling moving parts and the operating failure rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1a It is a schematic diagram of the main structure of the present invention; Figure 1b It is a schematic diagram of the air flow distribution drum structure; Figure 1c A cross-sectional view of the main structure; Figure 2 It is a schematic diagram of the drum wheel structure; Figure 3a , Figure 3b , Figure 3c , Figure 3d , Figure 3e , Figure 3f They are schematic diagrams of the matching relationship between the B cover plate and the air flow distribution drum; Figure 4 and Figure 5 A schematic diagram of the transmission of cigarettes of different specifications; Figure 6 This is a schematic diagram of the coordination between the encoder and the servo motor. DETAILED DESCRIPTION Example 1

[0021] A drum wheel transmission device suitable for various cigarette specifications, comprising a feeding device, a discharging device, and at least one drum wheel installed on a machine wall panel and its matching connecting flange, connected to a power shaft via a fastening device, and an air flow distribution drum matching the drum wheel and coaxially arranged. The air flow distribution drum is coaxially arranged with the drum wheel and connected to the wall panel via a fixing flange. The drum wheel is fixedly connected to the power shaft via a connecting flange and a fastening device, and is sleeved on the outside of the air flow distribution drum. In the axial matching range between the air flow distribution drum and the drum wheel, the gap between the outer diameter of the air flow distribution drum and the inner diameter of the drum wheel is d.

[0022] A cigarette suction grooves and B cigarette suction grooves are evenly and spaced apart on the circumferential outer side of the drum wheel, and air suction grooves are provided at the bottom thereof. Air suction channels A and B air suction channels are also provided corresponding to the A cigarette suction grooves or the B cigarette suction grooves.

[0023] The airflow distribution drum is a hollow circular drum, and its circumference is provided with A airflow distribution grooves and B airflow distribution grooves corresponding to the A cigarette suction groove and the B cigarette suction groove respectively. The A airflow distribution groove is a perforated groove, forming an A airflow channel through which the outer airflow passes through the hollow space of the drum wheel, the connecting flange and the airflow distribution drum and the holes of the wall panel and is connected to the A negative pressure source.

[0024] The B airflow distribution groove is a non-perforated groove, which constitutes a B airflow channel in which the outer airflow passes through the drum wheel, the B negative pressure channel arranged on the side wall of the airflow distribution drum is connected to the B negative pressure source.

[0025] The A suction hole of the axial drum-shaped wheel suction groove corresponds to the A airflow distribution groove of the airflow distribution drum, and the B suction hole of the drum-shaped wheel suction groove corresponds to the B airflow distribution groove of the airflow distribution drum; When the A specification cigarette is working, the B negative pressure source is not working. The A cigarette is adsorbed in the A cigarette suction slot through the A suction channel of the suction slot corresponding to the A airflow distribution slot, and then connected to the A negative pressure source through the A airflow channel.

[0026] When the B specification cigarettes are working, the A negative pressure source is not working. The B cigarettes are adsorbed in the B cigarette suction slot through the B suction holes of the suction slot corresponding to the B airflow distribution slot, and then connected to the B negative pressure source through the B airflow channel.

[0027] The gap between the outer diameter of the airflow distribution drum and the inner diameter of the drum-shaped wheel is d, preferably d=0.05mm-1.4mm. In this way, the negative pressure in the A airflow channel and the distribution groove will not be transmitted to the B airflow distribution groove through the gap, or only a small amount of negative pressure will be transmitted to the B airflow distribution groove through the gap, and will not affect the adsorption of A cigarettes. And the negative pressure in the B airflow channel and the distribution groove will not be transmitted to the A airflow distribution groove through the gap, or only a small amount of negative pressure will be transmitted to the A airflow distribution groove through the gap, and will not affect the adsorption of B cigarettes.

[0028] The suction grooves arranged at the bottom of the A cigarette suction groove and the B cigarette suction groove of the drum wheel and the corresponding A suction holes and B suction holes penetrate the wall of the drum wheel to form the connection between the A or B airflow channel and the outer area. This arrangement allows the negative pressure from the airflow distribution drum to pass through the suction holes and enter the suction grooves.

[0029] The airflow distribution drum also includes a B cover plate, which is used to cover the surface of the B negative pressure channel. This arrangement allows the open exposed area of ​​the B negative pressure channel to be isolated from the A suction channel of the drum wheel to prevent the disorder of the negative pressure airflow distribution.

[0030] The B cover plate covers the cigarette adsorption start line of the B airflow distribution slot flush with the cigarette adsorption start line of the A airflow distribution slot. This arrangement allows the position where the drum wheel, the front and rear drum wheels, and the feeding or discharging device for cigarette transmission to be kept near the point where the center axis of the drum wheel is connected.

[0031] It also includes a main encoder, a servo motor and a secondary encoder. The servo motor drives the connecting flange through the power shaft and then drives the drum wheel to rotate. The secondary encoder is arranged at the shaft end of each servo motor or connected to the servo motor through a transmission pair. The main encoder is connected to the transmission of the feeding device, and its preset angle a or b corresponds to the phase of cigarette A or cigarette B respectively.

[0032] When the A-size cigarettes are set to run, the main encoder reaches the preset angle a and controls the servo motor to deflect, so that the A-cigarette slot of each drum wheel corresponds to the A-cigarettes from the feeding device. When the B-size cigarettes are set to run, the main encoder reaches the preset angle b and controls the servo motor to deflect, so that the B-cigarette slot of each drum wheel corresponds to the B-cigarettes from the feeding device.

[0033] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the present invention.

Claims

1. A drum wheel transmission device suitable for various cigarette specifications, comprising a group of negative pressure transmission wheels axially parallelly distributed between a feeding device and a discharging device, the circumference of the negative pressure transmission wheel is spaced apart with at least two cigarette suction grooves of different specifications, which are used to absorb and transmit cigarettes of different specifications, and the cigarette suction grooves of the same specifications on adjacent negative pressure transmission wheels rotate close to each other and complete the absorption and transmission of cigarettes, the negative pressure transmission wheel comprises an airflow distribution drum fixedly connected to a negative pressure device through a pipeline and a drum wheel connected to a power device, the drum wheel is sleeved on the outside of the airflow distribution drum, and is characterized in that: The gap between the outer surface of the air flow distribution drum and the inner surface of the drum-shaped wheel is d, d=0.05mm-1.4mm.

2. The drum transmission device suitable for various cigarette specifications according to claim 1, characterized in that: Two types of cigarette suction grooves, A cigarette suction groove and B cigarette suction groove, are evenly distributed on the outer side of the circumference of the drum-shaped wheel. The bottoms of the A cigarette suction groove and the B cigarette suction groove are respectively provided with suction grooves and A suction holes and B suction holes that pass through the inner side wall of the drum-shaped wheel and the suction grooves. The A suction holes and the B suction holes are respectively connected to the specific negative pressure grooves of the airflow distribution drum; the airflow distribution drum is a hollow circular drum, and its circumference is provided with A airflow distribution grooves and B airflow distribution grooves corresponding to the A suction holes and the B suction holes respectively. The A airflow distribution groove is a through groove that penetrates the circumferential side wall of the airflow distribution drum. The A airflow distribution groove is connected to the A suction channel through the perforated groove. The A airflow distribution groove, the A suction channel, i.e., the hollow space of the airflow distribution drum, and the A negative pressure source are connected to form an A airflow channel; the drum wheel and the connecting flange, the drum wheel and the airflow distribution drum are matched with a gap d to form an A suction channel; The B air flow distribution groove is a non-penetrating open groove along the circumferential side wall of the air flow distribution drum. The B suction channel is a closed channel or channel that connects the B air flow distribution groove and extends axially to the bottom of the air flow distribution drum to connect to the B negative pressure source. The B air flow distribution groove, the B suction channel and the B negative pressure source are connected to form the B air flow channel.

3. The drum transmission device suitable for various cigarette specifications according to claim 2, characterized in that: The A airflow channel and the B airflow channel are controlled as follows: when the A specification cigarette is sucked, the B negative pressure source is not working, and the A cigarette passes through the A suction channel of the suction slot and corresponds to the A airflow distribution slot in the A cigarette suction slot, and then is connected to the A negative pressure source through the A airflow channel, and is sucked; When the B specification cigarettes are working, the A negative pressure source is not working. The B cigarettes are adsorbed in the B cigarette suction slot through the B suction holes of the suction slot corresponding to the B airflow distribution slot, and then connected to the B negative pressure source through the B airflow channel.

4. The drum transmission device suitable for various cigarette specifications according to claim 2, characterized in that: The B airflow distribution groove is a non-penetrating open groove placed on the outer wall of the airflow distribution drum, or it penetrates the side wall of the drum and is connected to the B negative pressure channel located at the bottom of the distribution groove, or the B airflow distribution groove is arranged on the outer wall of the drum and is connected to the B negative pressure channel also arranged on the outer wall of the drum, and the B negative pressure channel also includes a B cover plate, which is used to cover the surface of the B negative pressure channel.

5. The drum transmission device suitable for various cigarette specifications according to claim 4, characterized in that: The covering of the B cover plate makes the starting line of cigarette adsorption in the B airflow distribution groove flush with the starting line of cigarette adsorption in the A airflow distribution groove; such arrangement enables the position where the drum wheel, the front and rear drum wheels, and the feeding or discharging device for cigarette transmission and handover to be maintained near the point where the central axes of the drum wheels are connected.

6. The drum transmission device suitable for various cigarette specifications according to claim 1, characterized in that: It also includes a main encoder, a servo motor and a secondary encoder. The servo motor drives the connecting flange through the power shaft and then drives the drum wheel to rotate. The secondary encoder is arranged at the shaft end of each servo motor or connected to the servo motor through a transmission pair. The main encoder is connected to the transmission of the feeding device, and its preset angle a or b corresponds to the phase of cigarette A or cigarette B respectively.

7. The drum transmission device suitable for various cigarette specifications according to claim 6, characterized in that: When the A-specification cigarettes are set to run, the main encoder reaches the preset angle a and controls the servo motor to deflect, so that the A-cigarette slot of each drum wheel corresponds to the A-cigarettes from the feeding device; when the B-specification cigarettes are set to run, the main encoder reaches the preset angle b and controls the servo motor to deflect, so that the B-cigarette slot of each drum wheel corresponds to the B-cigarettes from the feeding device.

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