Package-lacking carton detecting and removing system on carton lifting and conveying mechanism

Abstract

The invention discloses a package-lacking carton detecting and removing system on a carton lifting and conveying mechanism, and relates to the technical field of carton cigarette quality detection. Comprising a photon detector and a push-out mechanism, the push-out mechanism is arranged on one side of a carton lifting and conveying mechanism, a removing outlet is formed in the other side of the carton lifting and conveying mechanism, and a collecting and transferring mechanism is further arranged at the removing outlet; the push-out mechanism comprises an air storage tank, an air outlet spray head arranged towards the removing outlet, and an electromagnetic valve arranged on a communication pipeline between the air outlet spray head and the air storage tank. According to the package-lacking strip box detecting and removing system on the strip box lifting and conveying mechanism, the purposes of automatically and rapidly detecting package-lacking strip boxes and automatically and rapidly removing package-lacking strip boxes are achieved on the premise that the strip box conveying efficiency is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of cigarette carton quality detection, and in particular to a carton-missing detection and rejection system on a carton lifting and conveying mechanism. Background Art

[0002] During the production of cartons, factors such as untimely replenishment of cigarette packs, cigarette pack jams, and mechanical equipment precision errors may lead to insufficient number of cigarette packs in the cartons, resulting in a lack of packs in the cartons. At present, photon detectors are commonly used on packaging machines to detect the lack of packs in cartons. When a defective carton is detected, the packaging machine and the elevator are controlled to stop and alarm, prompting the operator to take out the unqualified cartons.

[0003] In this regard, the Chinese utility model patent with the publication number CN218662707U discloses an electric-controlled automatic rejection device for missing packs of the elevator strip box, which is provided by setting a smoke rejection channel at intervals on one side of the original smoke conveying channel, and the upstream end of the smoke rejection channel is connected to the smoke conveying channel; and a cylinder assembly is provided above the original photon detector, the cylinder assembly includes a solenoid valve connected to the original machine PLC electrical signal and a cylinder push rod, and a through hole for the push rod to push the cigarette strip into the smoke rejection channel is provided at the corresponding position of the smoke conveying channel and the push rod of the cylinder assembly; the horizontal section of the downstream end of the smoke rejection channel is opposite to the elevator entrance, and the horizontal section is a coverless structure, so that the strip box pushed into the smoke rejection channel by the cylinder falls here and is taken away manually. The utility model can automatically complete the online rejection operation of the missing pack strip box, and through the setting position and structural characteristics of the smoke rejection channel, the missing pack strip box can be easily taken out after being rejected without interfering with the relevant parts of the original machine.

[0004] However, the device still has the following technical defects: 1. Every time the cylinder assembly works to push out the missing strip box, the elevator has to stop temporarily, resulting in a decrease in the original conveying efficiency of the elevator.

[0005] Second, since the missing package box falls naturally in the smoke removal channel mainly by its own weight, and the rectangular shape of the missing package box itself does not match the arc section in the smoke removal channel, the missing package box is easily blocked in the smoke removal channel.

[0006] 3. After the strip box passes through the photon detector and then passes through the arc conveying section into the lifting conveying section, the strip box will gradually slide downward under the action of gravity until it is supported by the supporting bracket on the conveyor belt. The strip box (especially the strip box without a package, whose center of gravity deviates from the center of gravity of the strip box) may tilt in the process of sliding downward, causing the strip box to tilt when being transported on the lifting conveying section, affecting the normal transportation of the strip box, and the strip box without a package cannot be pushed out normally due to the tilt.

[0007] IV. When the strip carton with missing packets hovers at the entrance of the cigarette removal channel, it cannot ensure that the strip carton with missing packets exactly hovers at a position where its lower end is higher than the lower edge of the cigarette removal channel entrance and its upper section is lower than the upper edge of the cigarette removal channel entrance each time. When the hovering position of the strip carton with missing packets is not good, the strip carton with missing packets will be blocked by the upper or lower edge of the entrance at the cigarette removal channel entrance, resulting in blockage of the strip carton with missing packets at the cigarette removal channel entrance and affecting the normal operation of the elevator. Summary of the Invention

[0008] The present invention provides a detection and rejection system for strip cartons with missing packets on a strip carton lifting and conveying mechanism. By setting a blowing type pushing component, the strip cartons with missing packets can be blown out from the rejection outlet even when the strip carton conveying mechanism is not stopped. The blown-out strip cartons with missing packets are then recovered by the collection and transfer mechanism and automatically transferred to the ground position, so as to achieve the purpose of automatically and quickly detecting strip cartons with missing packets and automatically and quickly rejecting strip cartons with missing packets on the premise of ensuring the strip carton conveying efficiency.

[0009] The technical solution of the present invention to solve the above problems is: to provide a detection and rejection system for strip cartons with missing packets on a strip carton lifting and conveying mechanism, including a photon detector and a pushing mechanism sequentially arranged on the strip carton lifting and conveying mechanism along the strip carton conveying direction. The pushing mechanism is arranged on one side of the strip carton lifting and conveying mechanism. On the other side of the strip carton lifting and conveying mechanism opposite to the pushing mechanism, a rejection outlet is opened, and a collection and transfer mechanism is also arranged at the rejection outlet; the pushing mechanism includes an air storage tank, an air outlet nozzle facing the rejection outlet, and a solenoid valve arranged on the communication pipeline between the air outlet nozzle and the air storage tank; when the strip carton lifting and conveying mechanism works, the photon detector first detects whether the strip cartons on it are missing packets, and the strip cartons determined to be missing packets by the photon detector are then laterally pushed out from the rejection outlet to the collection and transfer mechanism when passing through the pushing mechanism.

[0010] Further, both the photon detector and the solenoid valve are electrically connected to the control center of the strip carton lifting and conveying mechanism, and the control center controls the working operation state of the pushing mechanism through the solenoid valve according to the detection result of the photon detector.

[0011] Further, the distance between the photon detector and the pushing mechanism remains unchanged.

[0012] Further, a limiting and guiding strip is also arranged above the strip carton lifting and conveying mechanism, and the distance between the limiting and guiding strip and the conveyor belt of the strip carton lifting and conveying mechanism is greater than or equal to the width of the strip carton.

[0013] Further, the collection and transfer mechanism includes a track, an electric slide table, and a load platform. The track is vertically arranged on the side of the strip box lifting and conveying mechanism. The electric slide table is arranged on the track, and the load platform is arranged on the electric slide table. The electric slide table is used to drive the load platform to move up and down between the ground and the rejection outlet of the strip box lifting and conveying mechanism, so as to collect the defective strip boxes pushed out from the rejection outlet of the strip box lifting and conveying mechanism and transport them to the ground position.

[0014] Further, except for one side edge close to the rejection outlet, enclosing baffles for preventing the defective strip boxes from falling are also arranged at other edges of the load platform.

[0015] Further, a first sensor is arranged on the inner side of the enclosing baffle on the side of the load platform that is farther from the rejection outlet. The first sensor is used to detect whether the defective strip boxes on the load platform are in contact with the enclosing baffle. When the defective strip boxes on the load platform are pushed to contact the enclosing baffle provided with the first sensor, the first sensor correspondingly transmits a detection signal to the controller of the electric slide table, and the controller correspondingly controls the electric slide table to move downward, so as to transfer the defective strip boxes to the ground position.

[0016] Further, a blockage detection device for detecting whether the strip boxes are blocked is also arranged at the rejection outlet. The blockage detection device includes an upper swing plate rotatably arranged at the upper edge of the rejection outlet, a lower swing plate rotatably arranged at the lower edge of the rejection outlet, an upper proximity switch close to the upper swing plate and arranged outside the strip box lifting and conveying mechanism, and a second sensor arranged at one end of the load platform facing the rejection outlet. Both the upper proximity switch and the second sensor are electrically connected to the control center of the strip box lifting and conveying mechanism. When the defective strip boxes are blocked at the rejection outlet, the defective strip boxes correspondingly push the upper swing plate to swing close to the upper proximity switch, or push the lower swing plate to contact and apply pressure to the second sensor, so that the upper proximity switch or the second sensor correspondingly sends a blockage signal to the control center, and further causes the strip box lifting and conveying mechanism to stop.

[0017] Further, an installation bracket for installing the upper proximity switch is also included. The installation bracket includes a horizontal bracket and a vertical bracket. An activity through hole for inserting the horizontal bracket is opened in the middle of the vertical bracket, and the vertical bracket is movably installed on the horizontal bracket through the activity through hole. When the installation bracket is installed on the upper edge of the rejection outlet, the upper proximity switch is installed at the lower end of the vertical bracket.

[0018] Further, a locking threaded hole is also formed in the vertical bracket, and a locking bolt is cooperatively arranged in the locking threaded hole. The locking threaded hole communicates with the movable through hole, so that the locking bolt can correspondingly abut against the horizontal bracket body located in the movable through hole from the locking threaded hole, thereby restricting the current position of the vertical bracket.

[0019] Advantages of the present invention: 1. When using the air blowing method to push out the defective package cartons, the carton lifting and conveying mechanism does not need to stop, and the conveying efficiency of the carton lifting and conveying mechanism is guaranteed.

[0020] 2. By keeping the distance between the pushing mechanism and the photon detector fixed, and combining with the transportation speed of the carton lifting and conveying mechanism, the time interval between the control center receiving the recognition signal from the photon detector and the control center sending a control signal to the solenoid valve can be calculated, so as to ensure that the pushing component can accurately push out the defective package cartons.

[0021] 3. Compared with the channel-type conveying structure, the defective package cartons are not prone to tilting and toppling during the process of moving to the loading platform, and there will be no problems such as the defective package cartons blocking the channel.

[0022] 4. The loading platform can correspondingly carry multiple defective package cartons, and when the number of defective package cartons on the loading platform accumulates to a certain amount, it will be detected by the sensor. Thus, the loading platform can be controlled to descend to the ground position and a light alarm can be issued to prompt the worker to clean the defective package cartons accumulated on the loading platform, thereby avoiding the problem of too many defective package cartons accumulating on the loading platform.

[0023] 5. The blockage detection device is used to detect whether the defective package cartons are blocked at the rejection outlet, so as to effectively avoid the problems that the defective package cartons are regarded as normal cartons and lifted and conveyed to the next device in time, or the defective package cartons are further squeezed and blocked at the rejection outlet, resulting in the blockage failure of the carton lifting and conveying mechanism. Description of the Drawings

[0024] The drawings incorporated into the specification and constituting a part of the specification illustrate embodiments of the present invention and are used to explain the principles of the present invention together with the description. In these drawings, similar reference numerals are used to represent similar elements. The following drawings are some embodiments of the present invention, not all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic diagram of the overall structure of the defective package carton detection and rejection system according to a specific embodiment of the present invention; Figure 2 isFigure 1 Schematic enlarged view of the local structure therein; 1 - Photon detector, 2 - Pushing mechanism, 21 - Gas storage tank, 22 - Gas outlet nozzle, 23 - Solenoid valve, 3 - Rejection outlet, 4 - Collection and transfer mechanism, 41 - Track, 42 - Electric slide, 43 - Loading platform, 44 - Enclosing baffle, 45 - First sensor, 5 - Limit guiding strip, 6 - Blockage detection device, 61 - Upper swing plate, 62 - Lower swing plate, 63 - Upper proximity switch, 64 - Second sensor, 65 - Mounting bracket, 651 - Horizontal bracket, 652 - Vertical bracket, 653 - Locking bolt. Specific embodiments

[0026] In this specification, the orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc., which are mentioned or may be mentioned, are defined with respect to the structures shown in the respective drawings. The terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. They are relative concepts and may therefore change accordingly depending on their different positions and different usage states. Therefore, these or other orientation terms should not be construed as restrictive terms.

[0027] Please refer to Figure 1 and Figure 2 , a detection and rejection system for defective cigarette cartons on a cigarette carton lifting and conveying mechanism according to a specific embodiment of the present invention. The cigarette carton lifting and conveying mechanism successively includes a horizontal inlet conveying section, an arc transition conveying section, and a vertical lifting conveying section. The detection and rejection system for defective cigarette cartons includes a photon detector 1 provided on one side of the horizontal inlet conveying section, a pushing mechanism 2 provided at a certain height position on one side of the vertical lifting conveying section, and a rejection outlet 3 is provided on the other side of the vertical lifting conveying section at this height position relative to the pushing mechanism 2. A liftable collection and transfer mechanism 4 is further provided outside the rejection outlet 3.

[0028] When a cigarette carton enters the cigarette carton lifting and conveying mechanism, the cigarette carton first moves on the horizontal inlet conveying section to pass through the photon detector 1. The photon detector 1 correspondingly detects whether the passing cigarette carton is defective. When the photon detector 1 detects a defective cigarette carton, it immediately sends a signal to the control center of the cigarette carton lifting and conveying mechanism. When the defective cigarette carton is transported to the rejection outlet 3, the control center then controls the pushing mechanism 2 to work to blow the defective cigarette carton out from the rejection outlet 3 so that it enters the collection and transfer mechanism 4; when the defective cigarette cartons on the collection and transfer mechanism 4 accumulate to a certain number, the collection and transfer mechanism 4 then descends to the ground position. After the technical worker clears the defective cigarette cartons on the collection and transfer mechanism 4, the collection and transfer mechanism 4 rises again to one side of the rejection outlet 3 to collect defective cigarette cartons again, and so on, to achieve fully automated detection and rejection operations for defective cigarette cartons.

[0029] It should be noted that: in this embodiment, by obtaining the distance data between the photon detector 1 and the ejection outlet 3 and the conveying speed data of the strip carton lifting and conveying system, the time required for the strip carton at the photon detector 1 to be conveyed to the ejection outlet 3 can be calculated. Correspondingly, the control center can add this specific time interval between receiving the detection signal sent by the photon detector 1 and sending the control signal for starting the operation of the ejection mechanism 2, so as to realize the automated operation from discovering the strip carton with missing packets to ejecting the strip carton with missing packets.

[0030] Furthermore, to achieve non-stop operation for ejection, the ejection mechanism 2 includes an air storage tank 21, an air outlet nozzle 22 facing the ejection outlet 3, and an electromagnetic valve 23 arranged on the connecting pipe between the air outlet nozzle 22 and the air storage tank 21. The electromagnetic valve 23 is correspondingly electrically connected to the control center. When the strip carton with missing packets is conveyed between the air outlet nozzle 22 and the ejection outlet 3, the control center correspondingly issues a control signal to control the opening of the electromagnetic valve 23. The high-pressure gas correspondingly sprays out from the air storage tank 21 along the connecting pipe from the air outlet nozzle 22, so as to laterally push the strip carton with missing packets to exit from the ejection outlet 3 and leave the strip carton lifting and conveying mechanism. Since it is the flowing gas that exerts a thrust on the strip carton with missing packets, within the corresponding transportation speed range, the strip carton lifting and conveying mechanism does not need to stop temporarily.

[0031] Furthermore, a limiting guiding strip 5 is arranged above the conveyor belt of the strip carton lifting and conveying mechanism. The limiting guiding strip 5 is fixed to the side limiting plate of the strip carton lifting and conveying mechanism through side rods. The limiting guiding strip 5 specifically extends from the end of the horizontal inlet conveying section to the outlet end of the vertical lifting conveying section. The height distance from the limiting guiding strip 5 to the conveyor belt is slightly greater than the width of the strip carton, so that when the strip carton is conveyed and moved in the arc transition conveying section, the strip carton can be limited by the limiting guiding strip 5 during the process of sliding downward due to the influence of gravity, and thus will not tilt outward from the conveyor belt due to sliding.

[0032] Furthermore, the collection and transfer mechanism 4 includes a track 41, an electric sliding table 42, and a load platform 43. The track 41 is vertically installed at the right rear side of the strip carton lifting and conveying mechanism. The electric sliding table 42 is installed on the track 41. The rear side edge of the load platform 43 is fixedly connected to the electric sliding table 42, and the load platform 43 is kept in a horizontal installation posture. The electric sliding table 42 can drive the load platform 43 to move up and down along the extending direction of the track 41.

[0033] That is to say, the load platform 43 can be driven by the electric slide table 42 to rise to a position flush with the lower edge of the rejection outlet 3 of the strip box lifting and conveying mechanism. If a strip box with missing packets is transported and rises to the rejection outlet 311 position, the pushing mechanism 2 will work to push the strip box with missing packets to the right, so that the strip box with missing packets is pushed out from the rejection outlet 3 onto the load platform 43. When the number of strip boxes with missing packets on the load platform 43 exceeds the set value, the electric slide table 42 then controls the load platform 43 to descend to the ground position, and the worker clears the strip boxes with missing packets on the load platform 43. After the strip boxes with missing packets on the load platform 43 are cleared, the electric slide table 42 drives the load platform 43 to rise to the lower edge of the rejection outlet 311 again and forms a cycle.

[0034] Further, in order to make the load platform 43 accurately rise and hover at the lower edge position of the rejection outlet 3 and be flush with the lower edge of the rejection outlet 3, a limit induction block is provided at a specific position on the track 41, and the limit induction block is exactly set at the position flush with the lower edge of the rejection outlet 3, so as to limit the rising height position of the load platform 43. At the same time, when the load platform 43 touches the limit induction block, the electric slide table 42 immediately stops, so that the load platform 43 accurately hovers at the position flush with the lower edge of the rejection outlet 3 to facilitate the entry of the strip box with missing packets into the load platform 43.

[0035] Further, in order to prevent the strip boxes with missing packets from further piling up excessively on the load platform 43 and prevent the strip boxes with missing packets from falling out of the load platform 43, vertical enclosing baffles 44 are provided at the front edge, rear edge, and right edge of the load platform 43, and the three enclosing baffles 44 cooperate with each other to prevent the strip boxes with missing packets from falling out of the load platform 43.

[0036] At the same time, in this embodiment, since the strip box with missing packets moves from left to right to enter the load platform 43, when the load platform 43 is set to be several times larger than the bottom surface of the strip box with missing packets, the next strip box with missing packets will also push the previous strip box with missing packets that has entered the load platform 43 to move further to the right when it enters the load platform 43. In this regard, a first sensor 45 is also provided on the left side wall of the right enclosing baffle 44, and the upper surface of the load platform 434 is set as a smooth surface.

[0037] When the defective package strip boxes are successively pushed onto the loading platform 43 until the first defective package strip box that originally entered the loading platform 43 is pushed to a position close to the right enclosing baffle 44, the number of defective package strip boxes on the loading platform 43 has reached the load-bearing limit of the loading platform 43 at this time. At this time, by detecting the contact pressure on the left side wall of the right enclosing baffle 44 through the first sensor 45, it can be judged whether there is a defective package strip box in contact with the right enclosing baffle 44. When the defective package strip box is in contact with the right enclosing baffle 44, the detected pressure value of the first sensor 45 will correspondingly increase. At this time, the first sensor 45 transmits the pressure change signal to the electric slide 42, and the electric slide 42 correspondingly controls the electric loading platform 43 to move downward to the ground position, so that the worker can clean the defective package strip boxes in time to avoid the accumulation of defective package strip boxes on the loading platform 43.

[0038] Moreover, to prompt the on-duty worker, a signal indicator light is also provided at the upper end of the track 41. The induction control switch of this signal indicator light is also electrically connected to the first sensor 45. When the first sensor 45 detects that there is a defective package strip box in contact with the right enclosing baffle 44, the first sensor 45 also transmits the pressure change signal to this induction control switch, thereby controlling the signal indicator light to emit a photoelectric warning signal to remind the on-duty worker to clean the defective package strip boxes on the loading platform 43 in time, so as to ensure that when the loading platform 43 rises again to the lower edge of the rejection outlet 3, there is no defective package strip box on it.

[0039] In this embodiment, the first sensor 45 is a thin-film pressure sensor.

[0040] Furthermore, to prevent the problem that when the defective package strip box has not moved to a position where its lower end is higher than the lower edge of the rejection outlet 3 and its upper end is lower than the upper edge of the rejection outlet 3, the pushing mechanism 2 still pushes the defective package strip box to the right, resulting in the defective package strip box being blocked by the upper or lower edge of the rejection outlet 3 and causing the defective package strip box to be blocked at the rejection outlet 3, a blockage detection device 6 is also provided at the rejection outlet 3.

[0041] Specifically, the blockage detection device 6 includes an upper swing plate 61 hinged to the upper edge of the rejection outlet 3, a lower swing plate 62 hinged to the lower edge of the rejection outlet 3, an upper proximity switch 63 arranged on the mounting bracket 65 and outside the upper swing plate 61, and a second sensor 64 arranged at the right end of the loading platform 43 facing the rejection outlet 3. The upper proximity switch 63 and the second sensor 64 are both electrically connected to the control center of the strip box lifting and conveying mechanism.

[0042] When the missing-pack carton is blocked by the upper or lower edge of the ejection outlet 3 during the process of being pushed out to the right by the ejection mechanism 2, since the thrust direction of the ejection mechanism 2 is not flush with the upper or lower edge of the ejection outlet 3, the missing-pack carton will tilt to the right accordingly under the action of the thrust and the blocking of the upper or lower edge of the ejection outlet 3; when the missing-pack carton is blocked by the upper edge of the ejection outlet 3, the right-tilted missing-pack carton will push the upper swing plate 61 to swing to the right and approach the upper proximity switch 63. When the upper proximity switch 63 senses the upper swing plate 61, it will send a signal to the control center and the signal indicator of the carton lifting and conveying mechanism. When the control center receives this signal, it will control the carton lifting and conveying system to stop, and when the signal indicator receives this signal, it will give an audible and visual alarm to remind the on-duty workers to clean the blocked cartons at the ejection outlet 3 in time.

[0043] When the missing-pack carton is blocked by the lower edge of the ejection outlet 3, the right-tilted missing-pack carton correspondingly pushes the lower swing plate 62 to swing to the right and approach the load platform 43, and the lower swing plate 62 will apply pressure to the second sensor 64. When the second sensor 64 detects the applied pressure of the lower swing plate 62, it will send a signal to the control center and the signal indicator. When the control center receives this signal, it will control the carton lifting and conveying mechanism to stop, and when the signal indicator receives this signal, it will immediately give an audible and visual alarm, also reminding the on-duty workers to clean the blocked cartons at the ejection outlet 3 in time.

[0044] In this embodiment, the second sensor 64 is also a thin-film pressure sensor.

[0045] In addition, in this embodiment, after the missing-pack cartons blocked at the ejection outlet 3 are cleared, in order to enable the upper swing plate 61 to automatically reset, a return torsion spring is also sleeved on the hinge structure of the upper swing plate 61 at the upper edge of the ejection outlet 3, so that the right-swinged upper swing plate 61 can automatically swing back to the vertically downward position under the elastic force of the return torsion spring.

[0046] Moreover, a plurality of balls are embedded in the upper swing plate 61. The balls protrude from the surface of the upper swing plate 61 and can rotate freely, so that when the missing-pack carton tilts to the right, due to the existence of the balls, the contact friction resistance between the missing-pack carton and the upper swing plate 61 can be greatly reduced, and the missing-pack carton is therefore more likely to tilt to the right, thus better triggering the corresponding upper proximity switch 63 to improve the detection accuracy of the blockage detection device 6.

[0047] Furthermore, in this embodiment, in order to be able to install the upper proximity switch 63 on the right side of the upper edge of the ejection outlet 3 and to be able to adjust the distance between the upper proximity switch 63 and the upper swing plate 61 in real time, so as to adjust the detection accuracy of the blockage detection device 6 according to the actual conveying state and actual size of the cartons; the upper proximity switch 63 is fixedly installed on the right side of the upper edge of the ejection outlet 3 through a mounting bracket 65.

[0048] Specifically, the mounting bracket 65 includes a horizontal bracket 651 and a vertical bracket 652. A movable through-hole for inserting the horizontal bracket 651 is formed in the middle of the vertical bracket 652. The vertical bracket 652 is movably arranged corresponding to the horizontal bracket 651. A locking threaded hole and a locking bolt 653 arranged in cooperation with the locking threaded hole are further formed in the vertical bracket 652. The locking threaded hole communicates with the movable through-hole, so that the bottom end of the locking bolt 653 can pass through the locking threaded hole and enter the movable through-hole to abut against the horizontal bracket 651, thereby locking the vertical bracket 652.

[0049] In this regard, when the mounting bracket 65 is installed on the upper right edge of the rejection outlet 3, the left end of the horizontal bracket 651 is welded and fixed to the right side plate of the strip box lifting and conveying mechanism. An upper proximity switch 63 is installed at the lower end of the vertical bracket 652. The upper proximity switch 63 is arranged facing the upper swing plate 61. Technicians can adjust the actual distance between the upper proximity switch 63 and the upper swing plate 61 through the locking bolt 653, so as to adjust the detection and recognition accuracy. In this embodiment, the detection accuracy of the second sensor 64 is achieved by adjusting the specific lower limit value of the pressure alarm.

[0050] For the parts not mentioned above, the prior art is applicable.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detection and rejection system for missing-pack cartons on a carton lifting and conveying mechanism, characterized in that, It includes a photon detector (1) and a pushing mechanism (2) which are sequentially arranged on a strip box lifting and conveying mechanism along the conveying direction of the strip box. The pushing mechanism (2) is arranged on one side of the strip box lifting and conveying mechanism. On the other side of the strip box lifting and conveying mechanism opposite to the pushing mechanism (2), a rejection outlet (3) is provided, and a collection and transfer mechanism (4) is also arranged at the rejection outlet (3). The pushing mechanism (2) includes an air storage tank (21), an air outlet nozzle (22) facing the rejection outlet (3), and an electromagnetic valve (23) arranged on the connecting pipe between the air outlet nozzle (22) and the air storage tank (21). When the strip box lifting and conveying mechanism works, the photon detector (1) first detects whether the strip box on it is missing a package. And when the strip box judged to be missing a package by the photon detector (1) passes through the pushing mechanism (2) subsequently, it is correspondingly pushed horizontally out from the rejection outlet (3) to the collection and transfer mechanism (4).

2. The missing-pack carton detection and rejection system on the carton lifting and conveying mechanism according to claim 1, wherein, Both the photon detector (1) and the electromagnetic valve (23) are electrically connected to the control center of the strip box lifting and conveying mechanism, and the control center controls the working operation state of the pushing mechanism (2) through the electromagnetic valve (23) according to the detection result of the photon detector (1).

3. The missing-pack carton detection and rejection system on the carton lifting and conveying mechanism according to claim 2, characterized in that, The distance between the photon detector (1) and the pushing mechanism (2) is fixed and unchanged.

4. The missing-pack carton detection and rejection system on the carton lifting and conveying mechanism according to claim 1, wherein, A limiting guide strip (5) is further arranged above the strip box lifting and conveying mechanism, and the distance between the limiting guide strip (5) and the conveyor belt of the strip box lifting and conveying mechanism is greater than or equal to the width of the strip box.

5. The missing-pack carton detection and rejection system on the carton lifting and conveying mechanism according to claim 1, wherein, The collection and transfer mechanism (4) includes a track (41), an electric sliding table (42), and a loading platform (43). The track (41) is vertically arranged on the side of the strip box lifting and conveying mechanism. The electric sliding table (42) is arranged on the track (41), and the loading platform (43) is arranged on the electric sliding table (42). The electric sliding table (42) is used to drive the loading platform (43) to move up and down between the ground and the rejection outlet (3) of the strip box lifting and conveying mechanism, so as to collect the strip boxes missing packages pushed out from the rejection outlet (3) of the strip box lifting and conveying mechanism and transport them to the ground position.

6. The missing-pack carton detection and rejection system on the carton lifting and conveying mechanism according to claim 5, characterized in that, Except for one side edge close to the rejection outlet (3), enclosing baffles (44) for preventing the strip boxes missing packages from falling are also arranged at other edges of the loading platform (43).

7. The missing-pack carton detection and rejection system on the carton lifting and conveying mechanism according to claim 6, characterized in that A first sensor (45) is arranged inside the enclosing baffle (44) on the side of the loading platform (43) farther from the rejection outlet (3). The first sensor (45) is used to detect whether the strip box missing a package on the loading platform (43) contacts the enclosing baffle (44). And when the strip box missing a package on the loading platform (43) is pushed to contact the enclosing baffle (44) provided with the first sensor (45), the first sensor (45) correspondingly transmits a detection signal to the controller of the electric sliding table (42), and the controller correspondingly controls the electric sliding table to move downward, so as to transfer the strip box missing a package to the ground position.

8. The missing-pack carton detection and rejection system on the carton lifting and conveying mechanism according to claim 5, characterized in that, A blockage detection device (6) for detecting whether the strip box is blocked is further provided at the rejection outlet (3); the blockage detection device (6) includes an upper swing plate (61) rotatably provided at the upper edge of the rejection outlet (3), a lower swing plate (62) rotatably provided at the lower edge of the rejection outlet (3), an upper proximity switch (63) disposed near the upper swing plate (61) and outside the strip box lifting and conveying mechanism, and a second sensor (64) disposed at one end of the load platform (43) facing the rejection outlet (3). The upper proximity switch (63) and the second sensor (64) are both electrically connected to the control center of the strip box lifting and conveying mechanism; when the defective strip box is blocked at the rejection outlet (3), the defective strip box correspondingly pushes the upper swing plate (61) to swing close to the upper proximity switch (63), or pushes the lower swing plate (62) to contact and apply pressure to the second sensor (64), so that the upper proximity switch (63) or the second sensor (64) correspondingly sends a blockage signal to the control center, thereby stopping the strip box lifting and conveying mechanism.

9. The missing-pack carton detection and rejection system on the carton lifting and conveying mechanism according to claim 8, characterized in that, It further includes a mounting bracket (65) for mounting the upper proximity switch (63); the mounting bracket (65) includes a horizontal bracket (651) and a vertical bracket (652). An activity through hole for inserting the horizontal bracket (651) is formed in the middle of the vertical bracket (652), and the vertical bracket (652) is movably mounted on the horizontal bracket (651) through the activity through hole; when the mounting bracket (65) is mounted on the upper edge of the rejection outlet (3), the upper proximity switch (63) is mounted at the lower end of the vertical bracket (652).

10. The missing-pack carton detection and rejection system on the carton lifting and conveying mechanism according to claim 9, characterized in that, A locking threaded hole and a locking bolt (653) disposed in cooperation with the locking threaded hole are further formed in the vertical bracket (652). The locking threaded hole communicates with the activity through hole, so that the locking bolt (653) can correspondingly abut against the body of the horizontal bracket (651) located in the activity through hole from the locking threaded hole, thereby restricting the current position of the vertical bracket (652).

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