A reject device for a carton conveying path

Abstract

The utility model relates to the field of tobacco production equipment, concretely relates to a kind of removing device for carton cigarette conveying passage.The device is installed on the conveying passage above the outlet of packing machine, for removing unqualified carton cigarette from main conveying passage.The device includes rack, blocking component, transfer component and tensioning system.Blocking component includes vertically arranged air cylinder and the baffle connected with the piston rod of air cylinder, baffle moves up and down under the drive of air cylinder, for blocking unqualified carton cigarette on conveying passage.Transfer component includes driving motor, synchronous belt and paddle, paddle is arranged on the surface of synchronous belt, motor drives paddle to move along horizontal direction, and the carton cigarette blocked by baffle is sent to unqualified carton cigarette passage.Tensioning system includes sliding slot, mounting seat, jacking rod and nut, for adjusting the tensioning state of synchronous belt.The device structure is compact, can realize high-frequency continuous removal, improve the accuracy and reliability of removal action.

Description

Technical Field

[0001] This utility model relates to the field of tobacco production equipment, and more specifically to a rejection device for a cigarette pack conveying channel. Background Technology

[0002] In cigarette packaging production lines, rolling machines typically combine single packs of cigarettes into cartons for further packaging. Each carton usually contains 10 or 12 packs. After packaging at the rolling station, the cartons are conveyed to the next process via a conveyor belt. During the conveying process, to ensure product quality, the cartons on the conveyor belt are inspected, and defective cartons are promptly removed, allowing only qualified products to proceed to the next process.

[0003] In existing technologies, cigarette pack conveying channels often employ a cylinder-driven linear ejection rejection device. This type of device has a relatively simple structure, mainly consisting of a pneumatic actuator controlled by a solenoid valve and a mechanical baffle. The cylinder pushes a lever to eject unqualified cigarette packs from the conveying channel. This type of rejection device can basically meet the usage requirements when the rejection frequency is low and the rejection operation interval is long.

[0004] However, in actual production processes, especially when the sensitivity of detection equipment increases or product quality fluctuates significantly, multiple consecutive defective cigarette packs often appear, requiring high-frequency continuous rejection. Traditional cylinder-type linear rejection structures have the following technical problems: First, because the cylinder needs to wait for reset after each action, its response speed is limited by the cylinder's structural characteristics, making it difficult to meet the requirements of high-frequency rejection; second, the cylinder's stroke is fixed for each action, lacking flexible adjustment capabilities, which easily leads to missed rejections when multiple defective cigarette packs appear consecutively. Actual measurements show that its continuous rejection capacity has a significant upper limit, affecting rejection accuracy and quality control in downstream processes.

[0005] Therefore, there is an urgent need to provide a new type of cigarette rejection device with fast response speed and suitable for continuous rejection scenarios, so as to improve the reliability and efficiency of cigarette rejection and solve the problems of response lag and missed rejection in existing devices under high-frequency rejection conditions. Utility Model Content

[0006] In view of the above-mentioned deficiencies or defects in the prior art, the present invention provides a rejection device for a cigarette pack conveying channel. The rejection device can quickly intercept and reject unqualified cigarette packs from the conveying channel after receiving a signal from the unqualified cigarette pack detection device.

[0007] A rejection device for a cigarette pack conveying channel, installed on the cigarette pack conveying channel at the exit of a cigarette packing machine, for rejecting substandard cigarette packs on the conveying channel, comprising: A frame, which is installed above the cigarette conveying channel; The blocking assembly includes a cylinder and a baffle. The cylinder is vertically mounted on the frame, and the piston rod of the cylinder is connected to the baffle. The baffle is located above the conveying channel. The cylinder drives the baffle to move up and down to block the cigarette strips on the conveying channel when the baffle descends. The transfer assembly includes a drive motor, a synchronous belt, and multiple paddles. The drive motor is mounted on the frame. The synchronous belt includes a drive pulley, a driven pulley, and a belt connecting the two pulleys. The paddles are fixed to the outer surface of the belt. The drive motor drives the belt through the drive pulley, causing the paddles to move along the belt's direction of movement. During operation, the paddles sweep across the working surface of the baffle, pushing the cigarette packs blocked by the baffle out of the conveying channel.

[0008] Preferably, the belt is provided with multiple paddles, which are spaced apart and arranged in a ring for cyclic operation.

[0009] Preferably, the number of the paddles is two or three, and they are evenly spaced on the belt.

[0010] Preferably, the transfer assembly further includes a tensioning system, on which the driven pulley is mounted for adjusting the tension of the belt.

[0011] Preferably, the tensioning system includes a mounting base, a slide groove, a rotating shaft, a top support rod, a top block, and a nut; the slide groove is disposed on the frame, the mounting base can move left and right within the slide groove, the mounting base is connected to the rotating shaft, and the driven wheel is rotatably mounted on the rotating shaft; One end of the top support rod is connected to the mounting base, and the other end is a threaded end. The threaded end passes through the top block and is screwed with the nut. The top block is fixed on the frame. The nut cooperates with the top block to limit the position of the top support rod and push it to move, thereby driving the mounting base to move to adjust the belt tension.

[0012] Preferably, the baffle is arranged horizontally, and its length is not less than the width of the conveying channel to ensure that it can completely block the cigarette strips on the channel.

[0013] Preferably, the drive motor is a servo motor.

[0014] Preferably, the frame is detachably mounted above the conveying channel via connectors or bolts.

[0015] Preferably, the frame is provided with mounting holes or mounting plates for installing sensors or detection devices, which are used in conjunction with an external detection system to identify and reject substandard cigarette packs.

[0016] Preferably, the belt is a ring structure extending in the left-right direction, with a support plate on its inner side, and the bottom of the support plate abutting against the upper surface of the lower part of the belt.

[0017] This utility model provides a rejection device for a cigarette pack conveying channel, which uses a blocking component in conjunction with a paddle-type transfer component. This solves the problems of slow response and high missed rejection rate in existing cylinder linear rejection devices under high-frequency continuous rejection scenarios, and has the following beneficial technical effects: This design features a fast rejection response and is suitable for continuous rejection operations. It utilizes a cylinder-driven baffle as a preliminary blocking mechanism to temporarily fix defective cigarette packs in the conveyor channel. A synchronous belt-driven lever then laterally pushes the cigarette packs out, achieving a two-stage collaborative rejection process. During the return stroke, the cylinder-driven baffle lifts upwards. Compared to traditional structures that rely on a single cylinder to push the cigarette packs laterally, this avoids the problems of long cylinder action cycles and slow return strokes, significantly improving the rejection response speed. It is particularly suitable for scenarios where multiple defective cigarette packs appear consecutively.

[0018] The paddles are cyclically positioned to meet high-frequency rejection requirements. The belt in the transfer assembly is equipped with multiple spaced paddles. After each transfer action, the paddles automatically exit the rejection area, and the next paddle automatically enters the standby position, providing excellent continuous operation capability and significantly reducing the risk of missed rejections due to the actuator waiting to reset.

[0019] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] Figure 1 This is a perspective view of the rejection device of this utility model; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 This is a front view of the rejection device; Figure 4 It is a 3D image from another direction; Figure 5 This is a rear view of the rejection device.

[0021] Explanation of reference numerals in the attached figures 1-Rack; 2-Blocking assembly, 2a-Cylinder, 2b-Baffle; 3-Transfer assembly, 3a-Drive motor, 3b-Synchronous belt, 3b1-Driving pulley, 3b2-Driven pulley, 3b3-Belt, 3c-Pulley; 4-Tensioning system, 4a-Mounting base, 4b-Slide groove, 4c-Rotating shaft, 4d-Top support rod, 4e-Top block, 4f-Nut; 5-Support plate. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments are only used to illustrate the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0023] like Figures 1-5 As shown, this utility model provides a rejection device for a cigarette pack conveying channel, which is installed above the conveying channel at the exit of the cigarette packing machine. It is mainly used to reject cigarette packs that are detected as unqualified in the conveying channel from the main conveying path and guide them to the unqualified product collection channel.

[0024] The rejection device includes a frame 1, a blocking assembly 2, a transfer assembly 3, and a tensioning system 4. Wherein: The frame 1 is used to support various functional components. Structurally, it can be fixedly installed above the conveying channel by connectors or bolts, and has good versatility and disassembly. The blocking assembly 2 is located above the frame 1 and includes a vertically mounted cylinder 2a and a baffle 2b connected to its piston rod, which is used to press down the baffle 2b to block the unqualified cigarette strips after receiving the rejection command; The transfer assembly 3 is also installed on the frame 1, including a drive motor 3a, a synchronous belt 3b and multiple paddles 3c. When the cigarette pack is blocked by the baffle 2b, the paddles 3c, driven by the belt 3b3, push the cigarette pack away from the conveying channel in the lateral direction. Tensioning system 4 is used to adjust the tension of synchronous belt 3b to ensure the smooth operation of belt 3b3.

[0025] In addition, a support plate 5 is provided on the inner side of the synchronous belt 3b to provide bottom support during the feeding action of the paddle 3c, prevent the paddle 3c from tilting, and improve the accuracy and stability of feeding.

[0026] This invention enables the rejection of defective cigarette packs through the coordinated action of the baffle 2b (limiting position) and the picker 3c (rejection action). Especially in the case of multiple consecutive defective packs, the picker 3c can work cyclically, maintaining a high-frequency response capability and reducing the missed rejection rate, making it suitable for the rejection requirements of modern high-speed cigarette packaging production lines.

[0027] Rack 1: The frame 1 serves as the basic installation structure for the rejection device, used to install and fix functional components such as the blocking assembly 2, the transfer assembly 3, and the tensioning system 4. The frame 1 is installed above the cigarette conveying channel and spans the length of the conveying channel. Structurally, it can be connected to the cigarette rolling machine body or the conveying channel frame through several connectors or bolts to achieve stable fixation.

[0028] In this embodiment, the frame 1 is constructed of a metal frame, possessing good rigidity and structural strength, capable of bearing the weight of multiple operating components and the load impacts during operation. For ease of maintenance and replacement, the frame 1 is preferably a detachable structure, with each major component connected and installed via bolts, facilitating easy assembly and disassembly.

[0029] The frame 1 is provided with multiple mounting surfaces and mounting holes for fixing components such as cylinder 2a, motor, wheel assembly, mounting base 4a, and support structure. The relative positions between the mounting surfaces are calibrated by design to ensure that the baffle 2b, paddle 3c, belt 3b3, and tensioning system 4 maintain accurate mating positions and relative clearances during operation, thereby improving the overall stability and accuracy of the rejection action.

[0030] In addition, several mounting holes for installing sensors or supporting structures can be provided at both ends or specific locations of the frame 1 as needed, so as to interface with external detection systems and enhance the versatility and system integration capabilities of the device.

[0031] Blocking component 2 (see attached document) Figure 1 , 3 ): The blocking assembly 2 is installed at the center of the upper part of the frame 1 to intercept unqualified cigarette packs during the cigarette pack conveying process, and to provide positioning support for the rejection action of the picker 3c of the transfer assembly 3. The blocking assembly 2 mainly includes a cylinder 2a and a baffle 2b connected to the piston rod of the cylinder 2a.

[0032] In this embodiment, the cylinder 2a is a standard pneumatic linear cylinder, with its cylinder body vertically fixedly mounted on the mounting surface of the frame 1, and its piston rod extending downward and fixedly connected to the baffle 2b. The driving direction of the cylinder 2a is up and down, that is, the cylinder 2a can drive the baffle 2b to reciprocate in the vertical direction.

[0033] The baffle 2b is a horizontally arranged flat plate structure, extending laterally along the conveying channel. Its length is not less than the width of the cigarette conveying channel to ensure that it can completely cover the conveying channel when descending, thereby effectively blocking the continued conveying of cigarettes. The bottom surface of the baffle 2b is the working surface. When the cylinder 2a is activated to move the baffle 2b down to the working position, this working surface will contact the cigarettes, stopping them at the predetermined rejection position.

[0034] To ensure the accuracy of the action and the stability of the repeatability, the baffle 2b is fixed to the end of the piston rod by a rigid connector, and a guide mechanism or limiter can be provided to prevent it from shifting or tilting during the up and down movement.

[0035] The blocking component 2 works in conjunction with the transfer component 3. When an unqualified cigarette pack is detected, the cylinder 2a drives the baffle 2b to press down, first physically blocking the cigarette pack and keeping it in the rejection area. Then, the paddle 3c removes the cigarette pack horizontally.

[0036] This blocking structure features simple structure, fast response speed, and high action precision, and can effectively meet the needs of rejecting defective products in high-speed continuous conveying environments.

[0037] Transfer component 3 (see attached document) Figure 4 , 5 ): The transfer component 3 is used to remove the cigarette packs intercepted by the blocking component 2 from the conveying channel. It mainly includes a drive motor 3a, a synchronous belt 3b mechanism, and multiple paddles 3c. It is installed on the side or lower part of the frame 1 and works in conjunction with the blocking component 2 to complete the process of removing unqualified cigarette packs.

[0038] In this embodiment, the synchronous belt 3b mechanism includes a driving wheel 3b1, a driven wheel 3b2, and an annular belt 3b3. The driving wheel 3b1 is connected to the output shaft of the drive motor 3a. The driven wheel 3b2 is mounted on the tensioning system 4 via a rotating shaft 4c. The belt 3b3 is arranged around the driving wheel 3b1 and the driven wheel 3b2 to form a closed cyclic motion path.

[0039] The drive motor 3a is preferably a servo motor, which is installed on the side or upper support plate 5 of the frame 1. It can accurately control the running speed and running distance of the belt 3b3 to adapt to different rejection frequencies and the positioning requirements of the pick 3c.

[0040] The paddle 3c is fixedly installed on the outer surface of the belt 3b3, and there are two or three of them, which are spaced apart along the direction of movement of the belt 3b3 and distributed in a ring. The paddle 3c has a plate-like structure.

[0041] To improve the stability of the paddle 3c during operation, a support plate 5 is provided on the inner side of the synchronous belt 3b. The support plate 5 is connected to the lower side of the belt 3b3 and is located below the paddle 3c. It provides bottom support during the operation of the paddle 3c to prevent the paddle 3c from shifting or tilting due to lateral thrust or its own weight, thereby ensuring stable and accurate paddle feeding action.

[0042] The transfer component 3 and the blocking component 2 work together: When the cylinder 2a of the blocking component 2 actuates, it drives the baffle 2b to descend, blocking the defective cigarette packs above the conveyor channel. At this point, the drive motor 3a starts, rotating the belt 3b3. This causes the paddle 3c, located in the working position, to pass laterally under the baffle 2b, contacting the blocked cigarette packs and pushing them away from the conveyor channel into the defective product recycling channel. After completing its pushing action, the paddle 3c continues to move with the belt 3b3 away from the rejection area. Once the next paddle 3c enters the preset rejection position, it can respond to the next rejection request, achieving continuous and efficient rejection.

[0043] The transfer component 3 has a compact structure and fast response speed. It can form a rapid collaborative mechanism with the blocking component 2, effectively avoiding the problem of missed rejection caused by the response delay of the execution component. It is especially suitable for high-speed conveying environments where multiple unqualified cigarette packs appear continuously.

[0044] Tensioning System 4 (see attached document) Figure 2 ): To ensure that the synchronous belt 3b maintains appropriate tension during operation and to prevent slippage of the belt 3b3 or unstable operation of the pulley 3c due to slack, this utility model provides a tensioning system 4 in the transfer assembly 3 for effectively adjusting the tension of the belt 3b3.

[0045] like Figure 2 As shown, the tensioning system 4 includes a mounting base 4a, a sliding groove 4b, a rotating shaft 4c, a driven wheel 3b2, a top support rod 4d, a top block 4e, and a nut 4f.

[0046] The chute 4b is arranged on the frame 1 along the transverse direction of the conveying channel, serving as a guide structure for the mounting base 4a. The mounting base 4a can slide in the chute 4b in the left-right direction, and a rotating shaft 4c is mounted on it. The driven wheel 3b2 is rotatably mounted on the rotating shaft 4c, thereby realizing the closed tension of the belt 3b3 between the driving wheel 3b1 and the driven wheel 3b2.

[0047] To adjust the position of the driven pulley 3b2 to control the tension of the belt 3b3, the mounting base 4a is connected to a top support rod 4d. One end of the top support rod 4d is fixed to the mounting base 4a, and the other end is a threaded rod structure that passes through the fixed top block 4e on the frame 1, with a nut 4f on its exterior. The nut 4f cooperates with the top block 4e to form a stable axial limiting structure.

[0048] During use, by rotating the nut 4f, the top support rod 4d can be moved axially, which in turn pushes the mounting seat 4a to move left and right in the slide groove 4b, thereby causing the rotating shaft 4c and the driven wheel 3b2 to shift synchronously, so as to adjust the tension of the synchronous belt 3b.

[0049] The tensioning system 4 has a simple structure and is easy to adjust. It can be finely adjusted according to the usage status of the belt 3b3 to ensure the stability of the linear speed of the synchronous belt 3b during the operation of the pulley 3c, thereby improving the reliability and accuracy of the rejection action. At the same time, this structure has good maintainability and versatility, and is suitable for various belt 3b3 pulley spacing and tension requirements.

[0050] Work mode: In the operation of this utility model, the rejection device is installed above the cigarette conveying channel outlet of the cigarette rolling machine. Through the cooperation of the blocking component 2 and the transfer component 3, the unqualified cigarette packs are automatically rejected.

[0051] Specifically, when the external detection device identifies a defective cigarette pack on the conveying channel, the rejection device receives a trigger signal from the detection system. The cylinder 2a of the blocking assembly 2 then actuates, driving the baffle 2b downwards in the vertical direction. After the baffle 2b is pressed down to its working position, its bottom working surface extends laterally through the conveying channel, forming a physical block against the defective cigarette pack, causing it to stop in the predetermined rejection area.

[0052] Subsequently, the transfer assembly 3 begins operation, the drive motor 3a starts and drives the synchronous belt 3b to rotate, and multiple paddles 3c move cyclically with the synchronous belt 3b. At this time, the paddle 3c located directly below the rejection area enters the working position, and under the support of the support plate 5, it passes horizontally through the working surface of the baffle 2b, pushing the blocked cigarettes out of the main conveying channel and guiding them into the defective cigarette collection channel.

[0053] After the pusher 3c completes its pushing action, it continues to run with the synchronous belt 3b, leaving the rejection area and returning to its initial standby position. The cyclic arrangement of multiple pushers 3c can ensure that the next pusher 3c is quickly in place after the previous pusher 3c has finished pushing, thereby achieving the ability to continuously reject multiple unqualified cigarette packs.

[0054] During this process, the tensioning system 4 uses the top support rod 4d and the slide groove 4b structure to finely adjust the position of the driven wheel 3b2, ensuring that the tension of the synchronous belt 3b is constant and preventing the belt 3b3 from becoming loose, which could cause abnormal operation of the pick 3c. The support plate 5 on the inner side of the synchronous belt 3b provides effective support for the pick 3c, preventing the pick 3c from shifting or tilting during the picking action, and ensuring a stable rejection path and smooth operation.

[0055] After the rejection action is completed, the cylinder 2a reverses its direction, causing the baffle 2b to move upward to its initial position, restoring the conveying channel to unobstructed flow, and the next qualified cigarette pack continues to enter the downstream process.

[0056] This device has a reasonable structure and reliable operation, making it particularly suitable for high-frequency rejection scenarios. It can still operate stably even when there are multiple non-conforming cigarette packs, significantly reducing the rejection rate and improving the quality control capabilities of subsequent processes.

[0057] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0058] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0059] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A rejection device for a cigarette pack conveying channel, installed on the cigarette pack conveying channel at the exit of a cigarette packing machine, for rejecting defective cigarette packs on the conveying channel, characterized in that, include: A frame (1) is installed above the cigarette conveying channel; The blocking assembly (2) includes a cylinder (2a) and a baffle (2b). The cylinder (2a) is vertically mounted on the frame (1). The piston rod of the cylinder (2a) is connected to the baffle (2b). The baffle (2b) is located above the conveying channel. The cylinder (2a) drives the baffle (2b) to move up and down to block the cigarette strips on the conveying channel when the baffle (2b) descends. The transfer assembly (3) includes a drive motor (3a), a timing belt (3b), and multiple paddles (3c). The drive motor (3a) is mounted on the frame (1). The timing belt (3b) includes a drive pulley (3b1), a driven pulley (3b2), and a belt (3b3) connecting the two pulleys. The paddles (3c) are fixed on the outer surface of the belt (3b3). The drive motor (3a) drives the belt (3b3) through the drive pulley (3b1), causing the paddles (3c) to move along the direction of the belt (3b3). During operation, the paddles (3c) sweep across the working surface of the baffle (2b), pushing the cigarettes blocked at the baffle (2b) out of the conveying channel.

2. The rejection device for a cigarette conveying channel according to claim 1, characterized in that, The belt (3b3) is provided with multiple paddles (3c), which are spaced apart and arranged in a ring for cyclic operation.

3. The rejection device for a cigarette conveying channel according to claim 2, characterized in that, The number of the paddles (3c) is two or three, and they are evenly spaced on the belt (3b3).

4. The rejection device for a cigarette conveying channel according to claim 1, characterized in that, The transfer assembly (3) further includes a tensioning system (4), on which the driven wheel (3b2) is mounted for adjusting the tension of the belt (3b3).

5. The rejection device for a cigarette conveying channel according to claim 4, characterized in that, The tensioning system (4) includes a mounting base (4a), a slide groove (4b), a rotating shaft (4c), a top support rod (4d), a top block (4e), and a nut (4f); the slide groove (4b) is disposed on the frame (1), the mounting base (4a) can move left and right within the slide groove (4b), the mounting base (4a) is connected to the rotating shaft (4c), and the driven wheel (3b2) is rotatably mounted on the rotating shaft (4c); One end of the top support rod (4d) is connected to the mounting base (4a), and the other end is a threaded end. The threaded end passes through the top block (4e) and is screwed with the nut (4f). The top block (4e) is fixed on the frame (1). The nut (4f) cooperates with the top block (4e) to limit the position of the top support rod (4d) and push it to move, thereby driving the mounting base (4a) to move to adjust the tension of the belt (3b3).

6. The rejection device for a cigarette conveying channel according to claim 1, characterized in that, The baffle (2b) is arranged horizontally, and its length is not less than the width of the conveying channel to ensure that it can completely block the cigarette strips on the channel.

7. The rejection device for a cigarette conveying channel according to claim 1, characterized in that, The drive motor (3a) is a servo motor.

8. The rejection device for a cigarette conveying channel according to claim 1, characterized in that, The frame (1) is detachably mounted above the conveying channel by means of connectors or bolts.

9. The rejection device for a cigarette conveying channel according to claim 1, characterized in that, The frame (1) is provided with mounting holes or mounting plates for installing sensors or detection devices, which are used in conjunction with external detection systems to identify and reject unqualified cigarette packs.

10. The rejection device for a cigarette conveying channel according to claim 1, characterized in that, The belt (3b3) is a ring structure extending in the left and right direction, and a support plate (5) is provided on its inner side. The bottom of the support plate (5) is attached to the upper surface of the lower part of the belt (3b3).

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