A pushing-out mechanism for a cigarette product and a packaging machine

Abstract

The utility model belongs to tobacco packaging equipment technical field discloses a cigarette product push-out mechanism and packing machine. Cigarette product push-out mechanism includes installation component, air cylinder, guide piece, pusher, pressure sensor and pressure relief valve, and air cylinder is hinged in installation component. The guide piece is equipped with sliding hole. The first end of pusher is hinged with the piston rod of air cylinder. Air cylinder is used for driving pusher to slide in sliding hole, and the second end of pusher can push cigarette product into rotary mould box. The pressure sensor is arranged on the end face of the second end of pusher and is used for measuring the pressure received by pusher. The pressure relief valve is arranged on air cylinder and is in communication connection with pressure sensor. The utility model can prevent pusher from interfering with rotary mould box, reduce the damage and deformation of pusher, improve the service life and reliability of pusher, reduce the failure rate of packing machine, and improve the reliability and intelligent level of packing machine.

Description

Technical Field

[0001] This utility model relates to the field of tobacco packaging equipment technology, and in particular to a pushing mechanism and packaging machine for cigarette products. Background Technology

[0002] In the tobacco packaging industry, packaging machines have been developed to facilitate the rapid production of cigarette products and to be used in conjunction with cigarette production lines. During the packaging process, the packaging machine requires an ejection mechanism to push the cigarette products into a rotating mold box on a rotating frame. After the cigarette products are pushed into the rotating mold box, the ejection mechanism retracts from the rotating mold box, and the rotating frame rotates, allowing the rotating mold box containing the cigarette products to proceed to subsequent processes.

[0003] The ejection mechanism includes a drive component and an ejector component. The drive component pushes the ejector component, causing the ejector component to push the cigarette product into the rotating mold box. During the process of the ejector component pressing the cigarette product against the rotating mold box, if the ejector component encounters a blockage that causes an abnormal increase in thrust, the ejector component will press against the rotating mold box, which can easily cause interference between the ejector component and the rotating mold box. This can easily lead to damage and deformation of the ejector component, reducing its service life and reliability. It can also cause damage to the rotating frame and prevent it from operating normally, increasing the failure rate of the packaging machine and failing to guarantee the reliability of the packaging machine. Utility Model Content

[0004] The purpose of this utility model is to provide a pushing mechanism and packaging machine for cigarette products, which can prevent interference between the pushing part and the rotating mold box, reduce damage and deformation of the pushing part, improve the service life and reliability of the pushing part, reduce the failure rate of the packaging machine, and improve the reliability and intelligence level of the packaging machine.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] On the one hand, a cigarette product ejection mechanism is provided, comprising:

[0007] Install components;

[0008] A cylinder, which is hinged to the mounting assembly;

[0009] Guide component, wherein the guide component is provided with a sliding hole;

[0010] An ejector, the first end of which is hinged to the piston rod of the cylinder; the cylinder is used to drive the ejector to slide in the sliding hole, so that the second end of the ejector can push the cigarette product into the rotating mold box;

[0011] A pressure sensor is disposed on the end face of the second end of the ejector, and is used to measure the pressure on the ejector;

[0012] A pressure relief valve is installed in the cylinder and is communicatively connected to the pressure sensor.

[0013] In some possible implementations, the mounting assembly includes a mounting base and a pivot member, a first end of which is hinged to the mounting base and a second end of which is hinged to the cylinder.

[0014] In some possible implementations, the cigarette ejection mechanism further includes a proximity switch for detecting the movement position of the piston rod, and the proximity switch is communicatively connected to the pressure relief valve.

[0015] In some possible implementations, the proximity switch is a photoelectric proximity switch.

[0016] In some possible implementations, the piston rod has a first clearance surface; and / or, the ejector has a second clearance surface.

[0017] In some possible implementations, the pressure relief valve is a bidirectional pressure relief valve; and / or, the pressure sensor is a piezoelectric thin-film pressure sensor.

[0018] In some possible implementations, the ejector includes a connecting portion and an abutting portion connected in sequence, the connecting portion being hinged to the piston rod, the abutting portion being used to abut against the cigarette article, and the connecting portion being perpendicular to the abutting portion.

[0019] In some possible implementations, the first end of the ejector is hinged to the ball head of the piston rod.

[0020] In some possible implementations, the end face of the second end of the ejector is provided with an elastic cushioning pad.

[0021] On the other hand, a packaging machine is provided, including a rotary mold and a cigarette product ejection mechanism as described in any of the above embodiments, wherein a second end of the ejector can push the cigarette product into the rotary mold.

[0022] The beneficial effects of this utility model are:

[0023] This utility model provides a cigarette product ejection mechanism, including an mounting assembly, a cylinder, a guide, an ejector, a pressure sensor, and a pressure relief valve. The pressure sensor measures the pressure on the ejector. When the ejector interferes with the rotating mold and encounters resistance (the resistance being the pressure exerted by the cigarette product on the second end face of the ejector), the pressure sensor is communicatively connected to the pressure relief valve, which releases pressure from the cylinder. This prevents interference between the ejector and the rotating mold, avoids damage to the ejector, improves its service life and reliability, reduces the failure rate of the packaging machine, and enhances the reliability and intelligence of the packaging machine. The cylinder is hinged to the mounting assembly, and the first end of the ejector is hinged to the piston rod of the cylinder. This design reduces stress concentration between the ejector and the piston rod when the ejector encounters resistance, reducing deformation of the ejector. Furthermore, it prevents vibration of the ejector during movement. Additionally, the guide has a sliding hole, allowing the ejector to slide within it. The guide guides the movement of the ejector, ensuring the accuracy of its position.

[0024] This utility model also provides a packaging machine that can prevent interference between the ejector and the rotating mold, reduce damage and deformation of the ejector, improve the service life and reliability of the ejector, reduce the failure rate of the packaging machine, and improve the reliability and intelligence level of the packaging machine. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the cigarette product ejection mechanism provided by this utility model;

[0026] Figure 2 This is a first-view structural schematic diagram of the piston rod involved in this utility model;

[0027] Figure 3 This is a second-view structural schematic diagram of the piston rod involved in this utility model.

[0028] In the picture:

[0029] 1. Mounting assembly; 11. Mounting base; 12. Swinging component; 2. Cylinder; 21. Piston rod; 211. First clearance surface; 3. Guide component; 4. Push-out component; 41. Connecting part; 42. Abutting part; 5. PLC controller; 6. Position sensor; 7. Quick exhaust valve; 8. Pressure reducing valve; 9. Pressure sensor. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] like Figures 1 to 3 As shown, this utility model provides a cigarette product ejection mechanism, which can be used to eject cigarettes into a rotating mold box. The cigarette product ejection mechanism includes a mounting assembly 1, a cylinder 2, a guide 3, an ejector 4, a pressure sensor, and a pressure relief valve. The cylinder 2 is hinged to the mounting assembly 1; the guide 3 has a sliding hole; the first end of the ejector 4 is hinged to the piston rod 21 of the cylinder 2; the cylinder 2 drives the ejector 4 to slide in the sliding hole, so that the second end of the ejector 4 can push the cigarette product into the rotating mold box; the pressure sensor is disposed on the end face of the second end of the ejector 4 to measure the pressure on the ejector 4; the pressure relief valve is disposed on the cylinder 2 and is communicatively connected to the pressure sensor.

[0035] The pressure sensor measures the pressure on the ejector 4. When the ejector 4 interferes with the rotating mold and encounters resistance, the resistance is the pressure exerted by the cigarette product on the second end face of the ejector 4. The pressure sensor is connected to the pressure relief valve, which releases pressure from the cylinder 2, preventing interference between the ejector 4 and the rotating mold, reducing damage and deformation of the ejector 4, improving its service life and reliability, lowering the failure rate of the packaging machine, and enhancing its reliability and intelligence. The cylinder 2 is hinged to the mounting assembly 1, and the first end of the ejector 4 is hinged to the piston rod 21 of the cylinder 2. This design reduces stress concentration between the ejector 4 and the piston rod 21 when the ejector 4 encounters resistance, reducing deformation of the ejector 4. Furthermore, it prevents vibration of the ejector 4 during movement. Additionally, the guide 3 has a sliding hole, allowing the ejector 4 to slide. The guide 3 guides the movement of the ejector 4, ensuring the accuracy of its position. In addition, the cigarette product ejection mechanism can significantly improve production speed, ensure the precision of each ejection action, and make the packaging quality more stable.

[0036] Optionally, the ejector 4 includes a connecting portion 41 and an abutting portion 42 connected in sequence. The connecting portion 41 is hinged to the piston rod 21 of the cylinder 2, and the abutting portion 42 is used to abut against the cigarette product. The connecting portion 41 is perpendicular to the abutting portion 42. This arrangement increases the contact area between the ejector 4 and the cigarette product, facilitating the pushing of the cigarette product. Further, the connecting portion 41 is a rod-shaped structure, and the abutting portion 42 is a rod-shaped structure, with the two rod-shaped structures perpendicular to each other. Alternatively, the connecting portion 41 is a rod-shaped structure, and the abutting portion 42 is a disc-shaped structure, with the rod-shaped structure perpendicular to the disc-shaped structure. In other embodiments, the connecting portion 41 and the abutting portion 42 are connected to form a straight rod, which can realize the sliding of the ejector 4 with the sliding hole and the abutment of the ejector 4 with the cigarette product.

[0037] Optionally, the first end of the ejector 4 is hinged to the ball joint of the piston rod 21 of the cylinder 2. This configuration eliminates the transmission dead point between the ejector 4 and the piston rod 21, reduces stress concentration, and makes the transmission more flexible. Specifically, in this embodiment, the first end of the ejector 4 is hinged to the piston rod 21 of the cylinder 2 with two ball joints, which can better reduce stress concentration at the hinge point and improve durability. The specific structure of the double ball joint hinge is a mature technology in related fields and will not be described in detail in this embodiment. In other embodiments, the first end of the ejector 4 is hinged to the piston rod 21 of the cylinder 2 with a single ball joint.

[0038] Optionally, the end face of the second end of the ejector 4 is provided with an elastic buffer pad. The residual kinetic energy is absorbed through elastic deformation, reducing damage and deformation of the ejector 4.

[0039] Optionally, in this embodiment, the mounting assembly 1 includes a mounting base 11 and a swing member 12. The first end of the swing member 12 is hinged to the mounting base 11, and the second end of the swing member 12 is hinged to the cylinder 2. This arrangement reduces stress concentration between the ejector 4 and the piston rod 21, and between the cylinder 2 and the mounting base 11, thus reducing deformation of the ejector 4. Furthermore, the swing member 12, the cylinder 2, and the ejector 4 form a linkage structure. The reciprocating motion of the ejector 4 is achieved through the movement of the piston rod 21, ensuring accurate pushing of the cigarette during the packaging process. Specifically, the swing member 12 is a straight rod connected to the mounting base 11 via a high-precision roller bearing. Additionally, the length-to-diameter ratio of the swing rod is 2:1, reducing the return acceleration of the ejector 4 and minimizing inertial impact.

[0040] Optionally, the ejection mechanism for cigarette products also includes a proximity switch. The proximity switch detects the movement position of the piston rod 21 and is communicatively connected to the pressure relief valve. When the pressure relief valve releases pressure, the piston rod 21 undergoes a controllable micro-retraction displacement. The proximity switch detects the change in the piston rod 21's movement position in real time. When the piston rod 21 reaches the retracted position, the proximity switch sends a signal to the pressure relief valve, causing the pressure relief valve to stop releasing pressure and achieving precise reset of the piston rod 21. Optionally, in this embodiment, the proximity switch is a photoelectric proximity switch, which has a fast response speed and operates in a non-contact manner, reducing mechanical wear and the risk of failure.

[0041] Optionally, the gas released by the pressure relief valve is discharged through a dual redundant pressure relief channel, and the dual redundant pressure relief channel is provided with a throttling orifice. By setting the throttling orifice, the retraction speed of the ejector 4 is controlled to be maintained at 0.02m / s, so that the maximum retraction amount of the ejector 4 is ≤0.3mm. This avoids mechanical impact between the piston rod 21 and the cylinder 2 caused by uncontrollable retraction speed. Also, when the connecting part 41 of the ejector 4 is perpendicular to the abutting part 42, mechanical impact between the abutting part 42 and the guide part 3 can be avoided, thus extending the service life of the equipment.

[0042] Optionally, in this embodiment, the piston rod 21 is provided with a first clearance surface 211 to prevent the piston rod 21 from rubbing against the inner wall of the rotating mold box during retraction, thus making the retraction of the piston rod 21 smoother. Optionally, the first clearance surface 211 is a conical surface. Optionally, in this embodiment, the ejector 4 is provided with a second clearance surface; specifically, the abutment portion 42 is provided with a second clearance surface to prevent the ejector 4 from rubbing against the inner wall of the rotating mold box during retraction, thus making the retraction of the ejector 4 smoother. Optionally, the second clearance surface is a conical surface.

[0043] Optionally, in this embodiment, the pressure relief valve is a two-way pressure relief valve. When the ejector 4 is obstructed, causing the instantaneous thrust to be too large, the pressure relief channel is triggered to prevent damage to the ejector 4. When the piston rod 21 ejects the ejector 4, the pressure relief valve can draw in air to avoid insufficient thrust due to negative pressure.

[0044] Optionally, in this embodiment, the pressure sensor is a piezoelectric thin-film pressure sensor. A flexible patch design is used, directly attaching the piezoelectric thin-film pressure sensor to the end face of the ejector 4, thus solving the problem of traditional rigid sensors being susceptible to mechanical vibration interference.

[0045] Optionally, the cigarette product ejection mechanism also includes a PLC controller 5, which is communicatively connected to the pressure sensor, pressure relief valve, and proximity switch. Through closed-loop control by the PLC controller 5, the opening degree of the pressure relief valve is adjusted in real time, significantly improving dynamic response accuracy.

[0046] Optionally, the cigarette product ejection mechanism also includes a position sensor 6 for monitoring the offset position of the cylinder 2 relative to the ejector 4. During operation of the cigarette product ejection mechanism, the cylinder 2 oscillates relative to the ejector 4, causing the cylinder 2 to offset relative to the ejector 4. By monitoring the offset position of the cylinder 2 relative to the ejector 4, the ejection position of the ejector 4 can be corrected. Specifically, when the piston rod 21 is in its initial position, the angle between the piston rod 21 and the connection portion 41 of the ejector 4 is 15°. As the piston rod 21 moves, the angle between the piston rod 21 and the connection portion 41 of the ejector 4 decreases. This arrangement saves space and improves transmission efficiency.

[0047] Cylinder 2 includes a cylinder body, which comprises an inner liner and a frame. The inner liner is housed within the frame and is made of stainless steel, while the frame is made of aluminum alloy. This design ensures the stability and corrosion resistance of cylinder 2 during operation. Furthermore, finite element analysis has verified that the deformation of the cylinder body is less than 0.02 mm under rated thrust conditions.

[0048] In addition, the cigarette product ejection mechanism also includes a quick exhaust valve 7, a pressure reducing valve 8, and a pressure sensor 9. An air passage is provided at the interface of the cylinder 2. The quick exhaust valve 7, the pressure reducing valve 8, and the pressure sensor 9 are all located in the air passage. The quick exhaust valve 7 is used to exhaust gas from the cylinder 2 to accelerate the action speed of the cylinder 2. The pressure reducing valve 8 is located at the outlet of the quick exhaust valve 7 to maintain a stable outlet pressure. The pressure sensor 9 is used to measure the pressure of the gas in the air passage.

[0049] This utility model also provides a packaging machine, including a rotating mold and a cigarette product ejection mechanism. The second end of the ejector 4 can push the cigarette product into the rotating mold. This packaging machine can prevent interference between the ejector 4 and the rotating mold, reduce damage and deformation of the ejector 4, improve the service life and reliability of the ejector 4, reduce the failure rate of the packaging machine, and improve the reliability and intelligence level of the packaging machine.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pushing mechanism for cigarette products, characterized in that, include: Install component (1); Cylinder (2), which is hinged to the mounting assembly (1); Guide member (3), the guide member (3) is provided with a sliding hole; The first end of the ejector (4) is hinged to the piston rod (21) of the cylinder (2); the cylinder (2) is used to drive the ejector (4) to slide in the sliding hole, so that the second end of the ejector (4) can push the cigarette product into the rotating mold box; A pressure sensor is disposed on the end face of the second end of the ejector (4) for measuring the pressure on the ejector (4); A pressure relief valve is installed in the cylinder (2) and is communicatively connected to the pressure sensor.

2. The cigarette product ejection mechanism according to claim 1, characterized in that, The mounting assembly (1) includes a mounting base (11) and a swing member (12), the first end of which is hinged to the mounting base (11) and the second end of which is hinged to the cylinder (2).

3. The cigarette product ejection mechanism according to claim 1, characterized in that, The cigarette product ejection mechanism also includes a proximity switch, which is used to detect the movement position of the piston rod (21) and is communicatively connected to the pressure relief valve.

4. The cigarette product ejection mechanism according to claim 3, characterized in that, The proximity switch is a photoelectric proximity switch.

5. The cigarette product ejection mechanism according to claim 1, characterized in that, The piston rod (21) is provided with a first clearance surface (211); and / or, the ejector (4) is provided with a second clearance surface.

6. The cigarette product ejection mechanism according to claim 1, characterized in that, The pressure relief valve is a bidirectional pressure relief valve; and / or, the pressure sensor is a piezoelectric thin-film pressure sensor.

7. The cigarette product ejection mechanism according to any one of claims 1-6, characterized in that, The ejector (4) includes a connecting part (41) and an abutting part (42) connected in sequence. The connecting part (41) is hinged to the piston rod (21), and the abutting part (42) is used to abut against the cigarette product. The connecting part (41) is perpendicular to the abutting part (42).

8. The cigarette article ejection mechanism according to any one of claims 1-6, characterized in that, The first end of the ejector (4) is hinged to the ball head of the piston rod (21).

9. The ejection mechanism for cigarette products according to any one of claims 1-6, characterized in that, The second end face of the ejector (4) is provided with an elastic buffer pad.

10. A packaging machine comprising a rotary mold and a cigarette article ejection mechanism as claimed in any one of claims 1-9, wherein a second end of the ejector (4) is capable of pushing the cigarette article into the rotary mold.

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