A cigarette rejector

Abstract

This invention provides a cigarette rejection device, comprising a mounting cover, a horizontal drive assembly, a vertical drive assembly, a linear motor, a blank cigarette detector, and a controller. The mounting cover and the blank cigarette detector are respectively disposed on the right side of the conveying channel of a cigarette storage and conveying device. The horizontal drive assembly and the vertical drive assembly are respectively disposed inside the mounting cover. The linear motor is disposed on the horizontal drive assembly, which drives the linear motor to move horizontally. The horizontal drive assembly is disposed on the vertical drive assembly, which drives the horizontal drive assembly and the linear motor to move vertically. The movement direction of the mover of the linear motor is parallel to the axis of the cigarettes on the conveying channel. The blank cigarette detector, the linear motor, the horizontal drive assembly, and the vertical drive assembly are all electrically connected to the controller. This invention can reject blank cigarettes one by one as they pass through the cigarette storage and conveying device, avoiding excessive rejection.

Description

Technical Field

[0001] This invention belongs to the field of cigarette production technology, and specifically relates to a cigarette rejection device. Background Technology

[0002] During cigarette production, cigarette machines perform online detection of empty cigarette ends, typically using photoelectric principles. Detected empty cigarettes are then removed by a rejection mechanism on the receiving machine's rejection drum. The accuracy rate of the empty cigarette detector on the cigarette machine is around 60%, meaning a certain number of empty cigarettes will inevitably go undetected and enter the downstream packaging machine. Due to variations in tobacco quality and the operating status of the cigarette machine's tobacco supply system, the number of empty cigarettes produced by the machine can sometimes increase significantly, leading to a corresponding increase in the number of undetected empty cigarettes entering the downstream packaging machine. Empty cigarette detectors are usually also installed at the packaging machine's inlet. When an empty cigarette is detected, the entire carton (20 cigarettes) containing that empty cigarette is rejected, resulting in excessive rejection, increased material waste, and failure to meet energy conservation and emission reduction requirements.

[0003] The YF17 cigarette storage and conveying device is one of the key pieces of equipment in the intelligent cigarette making and packaging production line. It is installed between the cigarette making equipment and the packaging equipment and is mainly used for the temporary storage, buffering and orderly conveying of cigarettes to ensure the continuity of the production process.

[0004] Therefore, how to design a cigarette rejection device that can reject empty cigarettes passing through the cigarette storage and conveying device and avoid excessive rejection has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide a cigarette rejection device to solve the above-mentioned technical problems in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A cigarette rejection device includes a mounting cover, a horizontal drive assembly, a vertical drive assembly, a linear motor, a blank cigarette detector, and a controller. The mounting cover and the blank cigarette detector are respectively disposed on the right side of the conveying channel of a cigarette storage and conveying device, with the blank cigarette detector located upstream of the mounting cover. The horizontal drive assembly and the vertical drive assembly are respectively disposed within the mounting cover. The linear motor is disposed on the horizontal drive assembly, which drives the linear motor to move horizontally. The vertical drive assembly is disposed on the vertical drive assembly, which drives both the horizontal drive assembly and the linear motor to move vertically. The movement direction of the moving part of the linear motor is parallel to the axis of the cigarette on the conveying channel. A clearance opening is provided at the mounting cover on the right side of the conveying channel, and a rejection opening is provided on the left side of the conveying channel opposite to the clearance opening. The blank cigarette detector, the linear motor, the horizontal drive assembly, and the vertical drive assembly are all electrically connected to the controller.

[0008] Preferably, the vertical drive assembly includes a first drive motor, a first screw, a first vertical guide rod, a first vertical slider, a second vertical slider, and a second vertical guide rod. The first drive motor is vertically mounted on the bottom plate of the mounting cover. The first screw is vertically mounted inside the front side of the mounting cover. The lower end of the first screw is coaxially connected to the output shaft of the first drive motor, and the upper end of the first screw is rotatably engaged with the top plate of the mounting cover. The first vertical slider is threaded onto the first screw. The upper end of the first vertical guide rod is perpendicularly connected to the top plate, and the lower end of the first vertical guide rod passes through a first vertical through hole on the first vertical slider and is perpendicularly connected to the bottom plate. The first vertical guide rod is slidably engaged with the first vertical through hole. The second vertical guide rod is vertically mounted inside the rear side of the mounting cover, and the second vertical slider is slidably mounted on the second vertical guide rod. The two ends of the horizontal drive assembly are respectively mounted on the first vertical slider and the second vertical slider.

[0009] Preferably, the second vertical slider is provided with a second vertical through hole for the second vertical guide rod to pass through, and the second vertical slider is slidably disposed on the second vertical guide rod through the second vertical through hole.

[0010] Preferably, there are two first vertical guide rods, which are symmetrically arranged on the front and rear sides of the first screw.

[0011] Preferably, the output shaft of the first drive motor is connected to the lower end of the first screw via a first coupling.

[0012] Preferably, the horizontal drive assembly includes a second drive motor, a second screw, a horizontal slider, and a horizontal guide rod. The second drive motor is mounted on the first vertical slider. The second screw is horizontally positioned, with one end coaxially connected to the output shaft of the second drive motor and the other end rotatably engaged with the second vertical slider. The horizontal slider is threaded onto the second screw, and the linear motor is located at the lower part of the horizontal slider. One end of the horizontal guide rod is perpendicularly connected to the first vertical slider, and the other end passes through a horizontal through hole on the horizontal slider and is perpendicularly connected to the second vertical slider. The horizontal guide rod is slidably engaged with the horizontal through hole.

[0013] Preferably, there are two horizontal guide rods, which are symmetrically arranged on the upper and lower sides of the second screw.

[0014] Preferably, it further includes a collection shield and a collection box, the collection shield being disposed at the rejection port and the collection box being disposed at the bottom of the collection shield.

[0015] Preferably, the tops of the collecting cover and the mounting cover are connected by a fixing plate, which is connected to the top of the conveying channel.

[0016] Preferably, the mounting cover is a rectangular cover with an opening on the left side.

[0017] The beneficial effects of this invention are as follows:

[0018] The cigarette rejection device of this invention utilizes a hollow cigarette detector to detect whether cigarettes conveyed in the conveying channel have hollow defects. A horizontal and vertical drive assembly adjusts the position of a linear motor to track the detected hollow cigarettes, ensuring the linear motor's mover is aligned with the hollow cigarette. The mover is then driven to move along the cigarette's axis, thereby rejecting a single hollow cigarette. Therefore, this invention can reject hollow cigarettes individually after they have passed through the cigarette storage and conveying device, effectively avoiding excessive rejection and reducing material waste. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly described below, and the specific embodiments of the present invention will be further described in detail with reference to the drawings, wherein...

[0020] Figure 1 This is a schematic diagram of the internal structure of the mounting cover provided in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the cigarette rejection device provided in an embodiment of the present invention;

[0022] Figure 3 This is another schematic diagram of the cigarette rejection device provided in an embodiment of the present invention;

[0023] Figure 4 This is a top view of the cigarette rejection device provided in an embodiment of the present invention during use.

[0024] Marked in the attached diagram:

[0025] 1. First drive motor; 2. First screw; 3. First vertical guide rod.

[0026] 4. Second base; 5. First coupling; 6. First base.

[0027] 7. First vertical slider, 8. Second vertical guide rod, 9. Third base,

[0028] 10. Fourth base; 11. Second vertical slider; 12. Second drive motor.

[0029] 13. Second screw; 14. Horizontal guide rod; 15. Second coupling.

[0030] 16. Horizontal slider; 17. Linear motor; 18. Mounting cover.

[0031] 19. Fixing plate; 20. Collection cover; 21. Collection box.

[0032] 22. Arc-shaped guide plate; 23. Conveying channel; 24. Empty cigarette detector.

[0033] 25. Controller. Detailed Implementation

[0034] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0035] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0036] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0037] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] like Figures 1 to 4As shown, this embodiment of the invention provides a cigarette rejection device, which includes a mounting cover 18, a horizontal drive assembly, a vertical drive assembly, a linear motor 17, a blank cigarette detector 24, and a controller 25. The mounting cover 18 and the blank cigarette detector are respectively disposed on the right side of the conveying channel 23 of the cigarette storage and conveying device, with the blank cigarette detector 24 located upstream of the mounting cover 18. The horizontal drive assembly and the vertical drive assembly are respectively disposed inside the mounting cover, and the linear motor 17 is disposed on the horizontal drive assembly. The horizontal drive assembly is used to drive the cigarette rejection device. The linear motor moves horizontally, and the horizontal drive assembly is mounted on the vertical drive assembly. The vertical drive assembly drives the horizontal drive assembly and the linear motor to move vertically. The movement direction of the linear motor's rotor is parallel to the axis of the cigarette on the conveying channel. A clearance opening is provided at the mounting cover on the right side of the conveying channel 23, and a rejection opening is provided on the left side of the conveying channel opposite to the clearance opening. The empty cigarette detector, the linear motor, the horizontal drive assembly, and the vertical drive assembly are all electrically connected to the controller.

[0042] The cigarette rejection device provided in this embodiment of the invention utilizes a hollow cigarette detector 24 to detect whether cigarettes conveyed on the conveying channel have hollow defects. A horizontal drive assembly and a vertical drive assembly adjust the position of a linear motor 17 to track detected hollow cigarettes, ensuring the mover of the linear motor 17 is aligned with the hollow cigarette. The mover of the linear motor is then driven to move along the axis of the cigarette, thereby rejecting a single hollow cigarette. Therefore, this invention can reject hollow cigarettes individually after passing through the cigarette storage and conveying device, effectively avoiding excessive rejection and reducing material waste. This invention can effectively reduce the number of hollow cigarettes entering the downstream packaging machine, significantly reducing the rejection volume of the packaging machine and achieving better energy saving and consumption reduction.

[0043] Further, the vertical drive assembly includes a first drive motor 1, a first screw 2, a first vertical guide rod 3, a first vertical slider 7, a second vertical slider 11, and a second vertical guide rod 8. The first drive motor 1 is vertically mounted on the bottom plate of the mounting cover. The first screw is vertically mounted inside the front side of the mounting cover. The lower end of the first screw is coaxially connected to the output shaft of the first drive motor, and the upper end of the first screw is rotatably engaged with the top plate of the mounting cover. The first vertical slider 7 is threaded onto the first screw. The upper end of the first vertical guide rod 3 is vertically connected to the top plate, and the lower end of the first vertical guide rod passes through a first vertical through hole on the first vertical slider and is vertically connected to the bottom plate. The first vertical guide rod is slidably engaged with the first vertical through hole. The second vertical guide rod is vertically mounted inside the rear side of the mounting cover, and the second vertical slider 11 is slidably mounted on the second vertical guide rod 8. The two ends of the horizontal drive assembly are respectively mounted on the first vertical slider and the second vertical slider. Using this scheme, simply rotating the first screw forward or backward via the first drive motor causes the first vertical slider to move up and down along the first screw and the first vertical guide rod through the threaded engagement between the first vertical slider and the first screw. This causes the horizontal drive assembly and the linear motor to move up and down accordingly. Simultaneously, the second vertical slider moves up and down along the second vertical guide rod, conveniently adjusting the vertical position of the linear motor. It is understood that the first drive motor is electrically connected to the controller.

[0044] Specifically, the second vertical slider 11 is provided with a second vertical through hole for the second vertical guide rod 8 to pass through. The second vertical slider is slidably disposed on the second vertical guide rod through the second vertical through hole, thereby conveniently realizing the sliding setting of the second vertical slider on the second vertical guide rod.

[0045] Preferably, there are two first vertical guide rods 3, which are symmetrically arranged on the front and rear sides of the first screw 2, so as to better guide the up and down movement of the first vertical slider.

[0046] Specifically, the output shaft of the first drive motor is connected to the lower end of the first screw via a first coupling 5, thus facilitating the connection between the first drive motor and the first screw. The upper and lower ends of the first vertical guide rod 3 can be connected to the mounting cover via a first base 6 and a second base 4, respectively. The first base can be provided with a bearing seat and a bearing disposed in the bearing seat. The upper end of the first screw is installed in the inner ring of the bearing, thereby achieving a rotational fit between the first screw and the first base. The first drive motor can be installed on the second base. The upper and lower ends of the second vertical guide rod can be connected to the mounting cover via a third base 9 and a fourth base 10, respectively.

[0047] Further, the horizontal drive assembly includes a second drive motor 12, a second screw 13, a horizontal slider 16, and a horizontal guide rod 14. The second drive motor is mounted on the first vertical slider. The second screw 13 is horizontally positioned, with one end coaxially connected to the output shaft of the second drive motor and the other end rotatably engaged with the second vertical slider. The horizontal slider 16 is threaded onto the second screw, and the linear motor 17 is located at the lower part of the horizontal slider. One end of the horizontal guide rod is perpendicularly connected to the first vertical slider, and the other end of the horizontal guide rod 14 passes through a horizontal through-hole on the horizontal slider and is perpendicularly connected to the second vertical slider. The horizontal guide rod is slidably engaged with the horizontal through-hole. Using this design, simply rotating the second screw forward or backward using the second drive motor allows the threaded engagement between the horizontal slider and the second screw to move the horizontal slider and the linear motor located on the horizontal slider along the second screw and the horizontal guide rod in the horizontal direction, conveniently achieving horizontal position adjustment of the linear motor. It is understood that the second drive motor is electrically connected to the controller.

[0048] Specifically, there are two horizontal guide rods 14, which are symmetrically arranged on the upper and lower sides of the second screw 13, thereby better guiding the movement of the horizontal slider in the horizontal direction, i.e., the front-to-back direction.

[0049] Preferably, the output shaft of the second drive motor 12 is coaxially connected to the front end of the second screw via a second coupling 15; a bearing seat and a bearing disposed in the bearing seat can be provided on the second vertical slider, and the rear end of the second screw is installed in the inner ring of the bearing, thereby realizing the rotational engagement between the second screw and the second vertical slider. The empty cigarette detector can be a visual detection device, as long as it can identify empty cigarettes; Figure 4 The arrows in the text indicate the direction of cigarette delivery.

[0050] Furthermore, the cigarette rejection device provided in this embodiment of the invention also includes a collection cover 20 and a collection box 21. The collection cover 20 is disposed at the rejection port, and the collection box 21 is disposed at the bottom of the collection cover 20. This design allows empty cigarettes rejected by the linear motor's mover to pass through the rejection port and the collection cover before falling into the collection box, conveniently achieving the collection of empty cigarettes and avoiding chaos on the production floor. It is understood that the clearance opening is to provide space for the cigarette rejection action of the linear motor's mover and avoid interference.

[0051] Preferably, the tops of the collecting cover 20 and the mounting cover 18 are connected by a fixing plate 19, which is connected to the top of the conveying channel, thus facilitating the connection between the collecting cover and the mounting cover and the conveying channel. The rear side of the rejection port may have an outwardly bent arc-shaped guide plate 22 to organize cigarettes that have slightly shifted around their original positions after being rejected, ensuring that the cigarettes are transported neatly and orderly to the downstream equipment; the outward bending angle of the arc-shaped guide plate can be 10°. Preferably, the linear motor is a tubular linear motor; both the first drive motor and the second drive motor are servo motors.

[0052] Specifically, the mounting cover 18 is a rectangular cover with an opening on the left side, which makes the structure of the mounting cover relatively simple. The collection cover can be a rectangular cover with openings on the right and bottom sides, and the collection box is a rectangular box with an opening on the top side, with the top opening of the collection box corresponding to the bottom opening of the collection cover.

[0053] The general working process of this invention is as follows:

[0054] The empty cigarette detector detects whether the cigarettes being transported on the conveying channel have empty head defects in real time and transmits the data to the controller.

[0055] If an empty cigarette is detected, the controller sends a signal to the first drive motor and the second drive motor, causing the first drive motor and the second drive motor to work, so as to adjust the position of the linear motor in the horizontal and vertical directions, thereby tracking the empty cigarette.

[0056] The controller then sends a rejection signal to the linear motor, causing the mover of the linear motor to make a rapid reciprocating motion along the axis of the cigarette under the drive of the current, thereby rejecting the empty cigarette.

[0057] After a blank cigarette is removed, the position of the linear motor is adjusted using the first and second drive motors to track and remove the next blank cigarette. If there are no blank cigarettes to remove at the moment, the linear motor returns to the set initial position under the drive of the first and second drive motors to wait for the next blank cigarette tracking and removal signal.

[0058] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A cigarette rejection device, characterized in that, It includes a mounting cover, a horizontal drive assembly, a vertical drive assembly, a linear motor, a blank cigarette detector, and a controller. The mounting cover and the blank cigarette detector are respectively located on the right side of the conveying channel of the cigarette storage and conveying device, with the blank cigarette detector located upstream of the mounting cover. The horizontal drive assembly and the vertical drive assembly are respectively located inside the mounting cover. The linear motor is mounted on the horizontal drive assembly, which drives the linear motor to move horizontally. The horizontal drive assembly is mounted on the vertical drive assembly, which drives both the horizontal drive assembly and the linear motor to move vertically. The movement direction of the linear motor's rotor is parallel to the axis of the cigarette on the conveying channel. A clearance opening is provided at the mounting cover on the right side of the conveying channel, and a rejection opening is provided on the left side of the conveying channel opposite to the clearance opening. The blank cigarette detector, the linear motor, the horizontal drive assembly, and the vertical drive assembly are all electrically connected to the controller.

2. The cigarette rejection device according to claim 1, characterized in that, The vertical drive assembly includes a first drive motor, a first screw, a first vertical guide rod, a first vertical slider, a second vertical slider, and a second vertical guide rod. The first drive motor is vertically mounted on the base plate of the mounting cover. The first screw is vertically mounted inside the front side of the mounting cover, with its lower end coaxially connected to the output shaft of the first drive motor and its upper end rotatably engaged with the top plate of the mounting cover. The first vertical slider is threaded onto the first screw. The upper end of the first vertical guide rod is perpendicularly connected to the top plate, and its lower end passes through a first vertical through hole on the first vertical slider and is perpendicularly connected to the base plate. The first vertical guide rod is slidably engaged with the first vertical through hole. The second vertical guide rod is vertically mounted inside the rear side of the mounting cover, and the second vertical slider is slidably mounted on the second vertical guide rod. The two ends of the horizontal drive assembly are respectively mounted on the first vertical slider and the second vertical slider.

3. The cigarette rejection device according to claim 2, characterized in that, The second vertical slider is provided with a second vertical through hole for the second vertical guide rod to pass through, and the second vertical slider is slidably mounted on the second vertical guide rod through the second vertical through hole.

4. The cigarette rejection device according to claim 2, characterized in that, There are two first vertical guide rods, which are symmetrically arranged on the front and rear sides of the first screw.

5. The cigarette rejection device according to claim 2, characterized in that, The output shaft of the first drive motor is connected to the lower end of the first screw via a first coupling.

6. The cigarette rejection device according to claim 2, characterized in that, The horizontal drive assembly includes a second drive motor, a second screw, a horizontal slider, and a horizontal guide rod. The second drive motor is mounted on the first vertical slider. The second screw is horizontally positioned, with one end coaxially connected to the output shaft of the second drive motor and the other end rotatably engaged with the second vertical slider. The horizontal slider is threaded onto the second screw, and the linear motor is located at the lower part of the horizontal slider. One end of the horizontal guide rod is perpendicularly connected to the first vertical slider, and the other end passes through a horizontal through hole on the horizontal slider and is perpendicularly connected to the second vertical slider. The horizontal guide rod is slidably engaged with the horizontal through hole.

7. The cigarette rejection device according to claim 6, characterized in that, There are two horizontal guide rods, which are symmetrically arranged on the upper and lower sides of the second screw.

8. The cigarette rejection device according to claim 1, characterized in that, It also includes a collection shield and a collection box, the collection shield being disposed at the rejection port and the collection box being disposed at the bottom of the collection shield.

9. The cigarette rejection device according to claim 8, characterized in that, The tops of the collecting cover and the mounting cover are connected by a fixing plate, which is connected to the top of the conveying channel.

10. The cigarette rejection device according to any one of claims 1 to 9, characterized in that, The mounting cover is a rectangular cover with an opening on the left side.

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