A device for detecting a die-cut blank of paperboard and a method for detecting a die-cut blank of paperboard

Abstract

The application discloses a kind of paperboard after die cutting blank detection device and its detection method, belong to carton production equipment field, including machine table, conveying component, detection component, positioning mechanism, rejection mechanism, collection component and controller, wherein detection component includes several groups of transmitting end and receiving end, transmitting end and receiving end one-to-one correspondence and all with controller electrically connected, rejection mechanism includes lifting assembly, disengagement component and discharge assembly, lifting assembly can make paperboard move in the direction away from conveyor, disengagement component can abut paperboard and make paperboard move in the direction close to discharge assembly, discharge assembly can make paperboard move in the direction close to collection component, when the paperboard after die cutting is discharged from die cutting machine outlet end and enters the conveying component of this device, detection component will detect the paperboard after die cutting, ensure that every paperboard should form die cutting gap complete, prevent the problem that rear process cannot be folded.

Description

Technical Field

[0001] This invention discloses a device and method for detecting blanks after cardboard die-cutting, belonging to the field of carton production equipment. Background Technology

[0002] Cardboard boxes are the most widely used packaging products. The current mainstream cardboard box production method is to process and fold a piece of cardboard to form a cardboard box.

[0003] When processing cardboard, the cardboard needs to be creasing and die-cut by a die-cutting machine. Creasing refers to pressing crease lines on the cardboard to facilitate subsequent folding, while die-cutting refers to cutting off excess edges and corners (such as waste edges and handle holes) according to the preset unfolded carton diagram to form an unfolded "blank" of a single carton.

[0004] In a qualified cardboard box blank, the parts used for subsequent folding, such as the flaps, should have a gap between adjacent outer and inner flaps formed after the waste material is removed during die-cutting. However, during the die-cutting process, if the die-cutting machine's "blade," i.e., the die-cutting plate, is worn, or if the cardboard raw material deforms, resulting in poor contact with the die-cutting plate, there is a chance of incomplete die-cutting under continuous high-speed operation of the equipment. That is, the waste material that should have been removed is still attached to the cardboard, which will prevent the blanks conveyed to the subsequent workstations from being folded. In the current cardboard box production process, manual visual inspection is the main method of identification. This requires workers to stand at the edge of the conveyor belt that transports the cardboard and observe, which is time-consuming and labor-intensive. Moreover, due to the high speed of the equipment transporting the cardboard, manual identification is inefficient and prone to errors.

[0005] In response to the above problems, a new improvement plan is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a device and method for detecting die-cut cardboard blanks in order to solve the above-mentioned problems.

[0007] The present invention achieves the above objective through the following technical solution: a device for detecting blank sheets after die-cutting of cardboard, comprising:

[0008] The machine is installed on the ground, with one end connected to the output end of the die-cutting machine;

[0009] A conveying assembly for conveying cardboard includes several drive rollers and several conveyor belts, wherein the drive rollers are connected to the conveyor belts in a driving connection, and the several conveyor belts are arranged at intervals.

[0010] The detection component is used to detect whether there are gaps on the cardboard that have been die-cut.

[0011] A positioning mechanism, used to adjust the relative position of the detection components on the machine platform, including longitudinal and transverse components;

[0012] The rejection mechanism is used to remove unqualified cardboard from the conveyor belt;

[0013] Collection component, used to collect rejected non-conforming cardboard;

[0014] The controller, located at the output end of the die-cutting machine, is used to control the conveying components, detection components, positioning mechanism, and rejection mechanism.

[0015] The detection component includes several sets of transmitters and receivers, each transmitter and receiver being one-to-one and electrically connected to the controller. The rejection mechanism includes a lifting component, a detachment component, and a discharge component. The lifting component can cause the cardboard to move away from the conveyor belt. The detachment component can abut against the cardboard and cause it to move closer to the discharge component. The discharge component can cause the cardboard to move closer to the collection component.

[0016] The controller includes a control box, an operation panel, a processor, and a signal terminal. The operation panel is fixedly mounted on the control box. A main board is provided between the operation panel, the processor, and the signal terminal to form a signal communication between them. The operation panel is used to set operating parameters and control the conveying component, the detection component, the positioning mechanism, and the rejection mechanism. The signal terminal is used to receive and send signals. The processor is used to process the signals received by the signal terminal.

[0017] Preferably, the longitudinal component includes a longitudinal track and a longitudinal mover, the transverse component includes a transverse track and a plurality of transverse movers, the longitudinal movers are slidably connected to the longitudinal track, the transverse track is fixedly connected to the longitudinal movers, the transverse movers are slidably connected to the transverse track, and both the longitudinal and transverse components are configured in two groups. The transmitting end is fixedly connected to the transverse movers in one group of transverse components, and the receiving end is fixedly connected to the transverse movers in the other group of transverse components.

[0018] Preferably, the lifting assembly includes a power source and a pushing component. The pushing component includes a base and several push plates that are fixedly connected to each other. The power source is fixedly connected to the machine tool. The base is fixedly connected to the output end of the power source. The push plates can pass through the gap between two adjacent conveyor belts.

[0019] Preferably, the detachment assembly includes a housing, a support, a rotating shaft, a rubber wheel, and a first motor. The housing is fixedly connected to the machine base, the support is slidably connected to the housing, the rotating shaft is rotatably connected to the support, the rubber wheel is fixedly connected to the rotating shaft, the first motor is fixedly connected to the support and is drivenly connected to the rotating shaft, and an elastic element is provided inside the housing. Both ends of the elastic element are fixedly connected to the machine base and the support, respectively.

[0020] Preferably, the discharge assembly includes a second motor, a drive rod, and a discharge belt. The drive rod is rotatably connected to the machine base, the output end of the second motor is fixedly connected to the drive rod, and the discharge belt is drive-connected to the drive rod.

[0021] Preferably, the collection component includes a material frame and a tray. The material frame is fixedly connected to the machine, the tray is placed inside the material frame and can be separated from the material frame, and a soft pad is fixedly connected to the inner wall of the material frame.

[0022] A detection method for a billet inspection device includes the following steps:

[0023] S1. Set parameters according to the preset unfolded diagram of the carton through the controller's operation panel, and use the positioning mechanism to adjust the transmitter and receiver of the detection component to the appropriate positions;

[0024] S2. During the testing phase, the die-cutting machine is started to die-cut a piece of cardboard, so that the cardboard enters the conveyor belt from the die-cutting machine's output end, ensuring that the signal emitted by the transmitter located in S1 can pass through the gap formed after the cardboard is die-cut and be received by the receiver.

[0025] S3. During the formal start-up phase, after the cardboard passes through the detection area, it will block the signal emitted by the transmitter at the corresponding position, thereby triggering the controller to start timing. The different durations of the blocking of the detection components at each position are used to detect whether the die-cutting of the cardboard conforms to the drawing size.

[0026] S4. If the paperboard is deemed qualified in S3, it will be transported to the next workstation by the conveyor belt.

[0027] S5. If the paperboard is deemed unqualified in S3, the rejection mechanism is activated. The controller sends a signal to the lifting component through the signal terminal. The lifting component lifts the paperboard that has passed the push plate, and then uses the continuously rotating rubber wheel in the disengagement component to push the paperboard forward so that it falls onto the discharge belt of the discharge component and finally falls into the material frame via the discharge belt.

[0028] S6. In S5, count the number of times the rejection mechanism is executed, calculate the pass rate of this batch, and feed it back to the control panel.

[0029] S7. If S3 is continuously judged as unqualified, the machine shall be stopped and an inspection shall be carried out.

[0030] Preferably, S3 further includes S3.1, in which when cardboard begins to be conveyed by the conveyor belt through the detection component, the signals emitted by the two transmitters on both sides are blocked, indicating the start of detection. The controller starts timing. The transmitters in the middle that are aligned with the notches formed by die-cutting are still not blocked. The cardboard continues to move forward under the conveyor belt. When the part of the cardboard that does not need to be die-cut blocks the signals emitted by the middle transmitters, the first time is obtained, the first calculation is performed, and the length of the notch is calculated based on the conveyor belt speed and the first time obtained. The length is then compared with the preset unfolded dimensions in S1 to determine whether the length of this notch is qualified.

[0031] Preferably, S3 further includes S3.2, in which several middle transmitting ends are blocked by the un-die-cut position in the middle of the cardboard, and the second timing begins. When the middle transmitting ends cross the un-die-cut position in the middle of the cardboard, the corresponding receiving end receives the signal again, obtains the second time, and performs the second calculation. The length of the un-die-cut part in the middle of the cardboard is calculated based on the conveyor belt speed and the obtained second time, and compared with the preset unfolded size in S1 to determine whether this length is qualified.

[0032] Preferably, step S3 further includes step S3.3, in which the cardboard continues to move forward until the two launching ends on both sides are no longer blocked by the cardboard, indicating that the cardboard has completely passed through the detection area. A third time is obtained, and a third calculation is performed. The total width of the cardboard is calculated based on the conveyor belt speed and the obtained third time. At the same time, the length of the notch on the other side of the cardboard is obtained by subtracting the length calculated in steps S3.1 and S3.2 from the total width. This length is then compared with the preset unfolded dimensions to determine whether it is qualified.

[0033] Compared with the prior art, the beneficial effects of the present invention are:

[0034] By setting up a detection component, specifically a laser emitter including a transmitter and a receiver, the detection component is used to inspect the die-cut cardboard to ensure that the die-cut notch of each cardboard is complete, preventing problems such as the inability to fold in subsequent processes. It is also equipped with a rejection mechanism. When a cardboard that is not die-cut is detected, the rejection mechanism will remove the cardboard from the original conveyor belt and collect it separately for easy rework in the future. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 This is another schematic diagram of the time structure of the present invention;

[0037] Figure 3 This is a schematic diagram of the internal component structure of the machine tool of the present invention;

[0038] Figure 4 This is a schematic diagram of the conveying component structure of the present invention;

[0039] Figure 5 This is a schematic diagram of the positioning mechanism and detection component structure of the present invention;

[0040] Figure 6 This is a schematic diagram of the lifting component structure of the present invention;

[0041] Figure 7 This is a schematic diagram of the detachable component structure of the present invention;

[0042] Figure 8 This is a schematic diagram of the internal cross-sectional structure of the housing of the present invention;

[0043] Figure 9 This is a schematic diagram of the material discharge assembly structure of the present invention;

[0044] Figure 10 This is a schematic diagram of the collection component structure of the present invention;

[0045] Figure 11 This is a schematic diagram of the cardboard structure of the present invention.

[0046] Reference numerals: 1. Machine base; 2. Conveying assembly; 21. Drive roller; 22. Conveyor belt; 3. Detection assembly; 31. Transmitter; 32. Receiver; 4. Longitudinal assembly; 41. Longitudinal track; 42. Longitudinal mover; 5. Transverse assembly; 51. Transverse track; 52. Transverse mover; 6. Collection assembly; 61. Material frame; 62. Pallet; 63. Pad; 7. Lifting assembly; 71. Power source; 72. Pushing component; 721. Base; 722. Push plate; 8. Disengagement assembly; 81. Housing; 82. Support; 83. Rotating shaft; 84. Rubber wheel; 85. First motor; 86. Elastic component; 9. Discharge assembly; 91. Second motor; 92. Drive rod; 93. Discharge belt; 10. Controller; 101. Control box; 102. Operation panel; 11. Cardboard; 12. Swing cover. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. In this description, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] like Figures 1-5 As shown, a device for detecting die-cut cardboard blanks includes:

[0049] Machine 1 is installed on the ground, with one end connected to the output end of the die-cutting machine;

[0050] The conveying assembly 2 is used to convey the cardboard 11. It includes several drive rollers 21 and several conveyor belts 22. The drive rollers 21 are connected to the conveyor belts 22 in a driving connection. The several conveyor belts 22 are arranged at intervals. The cardboard 11 after being die-cut by the die-cutting machine will be sent out from the discharge end of the die-cutting machine and then fall onto the conveyor belts 22. It should be noted that the discharge end of the die-cutting machine has a clamping and positioning effect on the cardboard 11. That is, the die-cutting machine clamps the cardboard 11 and pushes it onto the conveyor belts 22. Therefore, the position of the cardboard 11 falling onto the conveyor belts 22 can be determined and will not be offset. Existing die-cutting machines can achieve this effect, so it will not be described in detail.

[0051] The detection component 3 is specifically configured as a laser emitter and a receiver. The laser can pass through the interval between adjacent conveyor belts 22 to detect whether there is a notch formed after die-cutting on the cardboard 11.

[0052] The positioning mechanism is used to adjust the relative position of the detection component 3 on the machine base 1. Specifically, it is configured as a linear motor, including a longitudinal component 4 and a transverse component 5, to meet the positioning in two directions.

[0053] A rejection mechanism is used to remove the unqualified cardboard 11 from the conveyor belt 22;

[0054] Collection component 6 is used to collect rejected non-conforming cardboard 11;

[0055] The controller 10 is located at the discharge end of the die-cutting machine and is used to control the conveying assembly 2, the detection assembly 3, the positioning mechanism, and the rejection mechanism.

[0056] The detection component 3 includes several sets of transmitters 31 and receivers 32. Each transmitter 31 and receiver 32 corresponds to one other and is electrically connected to the controller 10. The transmitter 31 generates a stable detection laser beam, the wavelength of which must be matched with that of the receiver 32. The receiver 32 receives the laser signal and converts it into an electrical signal. Figure 11 As shown, Figure 11 The diagram shown is of the most commonly used and widely applied cardboard box on the market. The cardboard 11 has flaps 12 formed on both sides after die-cutting. There are notches between adjacent flaps 12, specifically three notches between the four flaps 12. Therefore, the transmitter 31 and receiver 32 of this device can be set to five sets. When the cardboard 11 enters the detection area, the two sets of transmitters 31 on both sides are blocked, thus obtaining a detection command. The receiver 32 can integrate auxiliary components such as voltage divider resistors and comparators, comparing the divided voltage with a preset threshold and outputting high and low levels to determine whether it is blocked. The laser emitted by the three sets of transmitters 31 in the middle can pass through the notches to determine whether the notches are successfully formed. The rejection mechanism includes a lifting component 7, a disengagement component 8, and a discharge component 9. The lifting component 7 can push the cardboard 11... 1. Moving away from conveyor belt 22, the release component 8 can abut against the cardboard 11 and cause the cardboard 11 to move towards the discharge component 9. The discharge component 9 can cause the cardboard 11 to move towards the collection component 6. When the detection component 3 determines that the cardboard 11 is a qualified product, the cardboard 11 will enter the next folding station under the transmission of the conveyor component 2. When the detection component 3 determines that the die-cut notch of the cardboard 11 is unqualified, it will send a signal to the controller 10. The controller 10 will start the rejection mechanism. Specifically, the lifting component 7 lifts the cardboard 11 away from the conveyor belt 22 and then abuts against the release component 8. The release component 8 gives the cardboard 11 a forward force, so that it is transferred to the discharge component 9 and then conveyed to the collection component 6 for unified collection, which facilitates subsequent rework processing. There is no need for manual visual identification next to the equipment, which improves efficiency and accuracy.

[0057] The controller 10 includes a control box 101, an operation panel 102, a processor, and a signal terminal. The operation panel 102 is fixedly mounted on the control box 101. A main board is provided between the operation panel 102, the processor, and the signal terminal to form a signal connection between them. The operation panel 102 is used to set operating parameters and control the conveying component 2, the detection component 3, the positioning mechanism, and the rejection mechanism. The signal terminal is used to receive and send signals, and the processor is used to process the signals received by the signal terminal.

[0058] like Figure 5As shown, the longitudinal component 4 includes a longitudinal track 41 and a longitudinal mover 42, and the transverse component 5 includes a transverse track 51 and several transverse movers 52. Both the longitudinal component 4 and the transverse component 5 are configured as linear motors. Linear motors are often simply described as movers moving on magnetic tracks. The longitudinal movers 42 are slidably connected to the longitudinal track 41, and the transverse track 51 is fixedly connected to the longitudinal movers 42. That is, the operator can use the longitudinal movers 42 to adjust the distance between the transverse track 51 and the die-cutting machine's output end to accommodate various sizes of cardboard 11. The transverse movers 52 are slidably connected to the transverse track 51. Both the longitudinal component 4 and the transverse component 5 are configured with... There are two sets. The transmitter 31 is fixedly connected to the transverse mover 52 in one set of transverse components 5, and the receiver 32 is fixedly connected to the transverse mover 52 in another set of transverse components 5. The transmitter 31 and receiver 32 of the detection component 3 are fixedly connected to the transverse mover 52, so that the position of the transmitter 31 and receiver 32 can be adjusted according to the preset unfolded diagram of the cardboard 11. This ensures that the two sets of transmitters 31 and receivers 32 on both sides can receive the blocking signal when the cardboard 11 enters the detection area, and the three sets of transmitters 31 and receivers 32 in the middle can be aligned with the three notches generated by the die cutting on the cardboard 11 for detection.

[0059] like Figure 3 and Figure 6 As shown, the lifting assembly 7 includes a power source 71 and a pusher 72. The pusher 72 includes a base 721 and several push plates 722 that are fixedly connected to each other. The power source 71 is fixedly connected to the machine base 1, and the base 721 is fixedly connected to the output end of the power source 71. The push plates 722 can pass through the gap between two adjacent conveyor belts 22. The power source 71 used to generate power to make the pusher 72 lift and lower is set as a ball screw pair, that is, the motor drives the screw to rotate, which is converted into linear lifting through the nut. The speed can reach 0.2-1.5m / s, with extremely high precision. It can effectively achieve rapid lifting and lowering, ensuring that after the unqualified cardboard 11 is lifted and conveyed away by the pusher 72, the pusher 72 can quickly reset and not interfere with the subsequent passage of cardboard 11.

[0060] like Figure 3 , Figure 7 and Figure 8As shown, the detachment assembly 8 includes a housing 81, a support 82, a rotating shaft 83, a rubber wheel 84, and a first motor 85. The housing 81 is fixedly connected to the machine base 1, the support 82 is slidably connected to the housing 81, the rotating shaft 83 is rotatably connected to the support 82, the rubber wheel 84 is fixedly connected to the rotating shaft 83, and the first motor 85 is fixedly connected to the support 82 and driven by the rotating shaft 83. An elastic element 86 is provided inside the housing 81. The two ends of the elastic element 86 are fixedly connected to the machine base 1 and the support 82, respectively. The elastic element 86 is set as a spring. When the unqualified cardboard 11 below is pushed up by the pusher 72, the cardboard 11 abuts against the rubber wheel 84 above. The rubber wheel 84 rotates at high speed due to the drive of the first motor 85 and the rotating shaft 83, thereby giving the cardboard 11 that abuts against the rubber wheel 84 a forward thrust, causing the cardboard 11 to move forward and fall onto the discharge assembly 9.

[0061] like Figure 3 and Figure 9 As shown, the discharge assembly 9 includes a second motor 91, a drive rod 92, and a discharge belt 93. The drive rod 92 is rotatably connected to the machine base 1, and the output end of the second motor 91 is fixedly connected to the drive rod 92. The discharge belt 93 is drive-connected to the drive rod 92. During the operation of the equipment, the second motor 91 continuously outputs motion to drive the drive rod 92 to rotate, thereby enabling the discharge belt 93 to convey materials in one direction. When the unqualified cardboard 11, which is lifted by the lifting assembly 7, is pushed by the detachment assembly 8 and falls onto the discharge assembly 9, the cardboard 11 moves towards the collection assembly 6 under the conveying effect of the discharge belt 93, thus completing the rejection of unqualified products.

[0062] like Figure 1 and Figure 10 As shown, the collection component 6 includes a material frame 61 and a tray 62. The material frame 61 is fixedly connected to the machine base 1. The tray 62 is placed inside the material frame 61 and can be separated from the material frame 61. A soft pad 63 is fixedly connected to the inner wall of the material frame 61. The soft pad 63 can be a soft silicone pad or a cotton pad, so that the edges of the cardboard 11 falling from the discharge belt 93 into the material frame 61 can be cushioned by the soft pad 63 to reduce damage. At the same time, since the tray 62 is separable, after collecting a certain number of cardboard 11, the tray 62 can be removed by a forklift or other tools for unified transfer.

[0063] This product also includes a detection method for a blank inspection device, comprising the following steps:

[0064] S1. The parameters are set according to the preset unfolded diagram of the carton through the operation panel 102 of the controller 10, and the transmitter 31 and receiver 32 of the detection component 3 are adjusted to the appropriate position using the positioning mechanism. Specifically, the width of the cardboard 11, the length of the notch cut between adjacent flaps 12, and the distance between adjacent notches are obtained according to the preset unfolded diagram of the carton, and the position of the transmitter 31 and receiver 32 are adjusted by using these data.

[0065] S2. During the testing phase, the die-cutting machine is started to die-cut a piece of cardboard 11, so that the cardboard 11 enters the conveyor belt 22 from the die-cutting machine's output end, ensuring that the signal emitted by the transmitter 31 positioned in S1 can pass through the gap formed after the cardboard 11 is die-cut and be received by the receiver 32.

[0066] S3. During the formal start-up phase, after the cardboard 11 passes through the detection area, it will block the signal emitted by the transmitter 31 at the corresponding position, thereby triggering the controller 10 to start timing. The controller uses the different time that the detection components 3 at each position are blocked to detect whether the die-cutting of the cardboard 11 conforms to the drawing size.

[0067] S3 also includes the following steps:

[0068] S3.1 When no cardboard 11 passes the detection component 3 along the conveyor belt 22, all receivers 32 can always receive the signal emitted by the transmitter 31. When cardboard 11 starts to be conveyed through the detection component 3 via the conveyor belt 22, due to the characteristics of the cardboard 11 of this product, the transmitter 31 and receiver 32 are specifically set to five groups. The signals emitted by the two transmitters 31 on both sides are blocked. At this time, it indicates that the detection has started and the controller 10 starts timing. The transmitters 31 in the middle that are aligned with the notch formed by the die-cutting are still not blocked. The cardboard 11 continues to move forward under the conveyor belt 22. When the part of the cardboard 11 that does not need to be die-cut blocks the signals emitted by the transmitters 31 in the middle, the first time is obtained and the first calculation is performed. The length of the notch is calculated according to the transmission speed of the conveyor belt 22 and the first time obtained, and compared with the pre-set unfolded size in S1 to determine whether the length of this notch is qualified. The specific comparison result can allow some tolerance, such as ±5mm. This value can be set according to the specific type of cardboard 11 and the enterprise standard.

[0069] S3.2 When several transmitters 31 in the middle are blocked by the un-die-cut position in the middle of the cardboard 11, the second timing begins. When the transmitters 31 in the middle cross the un-die-cut position in the middle of the cardboard 11, the corresponding receivers 32 receive the signal again, obtain the second time, and perform the second calculation. The length of the un-die-cut part in the middle of the cardboard 11 is calculated based on the transmission speed of the conveyor belt 22 and the obtained second time. It is compared with the preset unfolded size in S1 to determine whether this length is qualified. Similarly, this comparison value is also allowed to have tolerance, such as ±5mm. This value can be set according to the specific cardboard 11 type and enterprise standards.

[0070] S3.3 The cardboard 11 continues to move forward until the two transmitting ends 31 on both sides are no longer blocked by the cardboard 11, which means that the cardboard 11 has completely passed through the detection area. The third time is obtained and the third calculation is performed. The total width of the cardboard 11 is calculated based on the transmission speed of the conveyor belt 22 and the obtained third time. At the same time, the length of the notch on the other side of the cardboard 11 is obtained by subtracting the length calculated in S3.1 and S3.2 from the total width. It is then compared with the preset unfolded size to determine whether it is qualified.

[0071] S4. If the paperboard 11 is deemed qualified in S3, the conveyor belt 22 will transport it to the next workstation.

[0072] S5. In S3, if it is determined to be unqualified, the rejection mechanism is activated. The controller 10 sends a signal to the lifting component 7 through the signal terminal. The lifting component 7 lifts the cardboard 11 that has passed through the push plate 722, and then uses the continuously rotating rubber wheel 84 in the disengagement component 8 to push the cardboard 11 forward, so that the cardboard 11 falls onto the discharge belt 93 of the discharge component 9, and finally falls into the material frame 61 through the discharge belt 93.

[0073] S6. In S5, the number of times the rejection mechanism is executed is counted, the pass rate of this batch is calculated and fed back to the operation panel 102 of the controller 10.

[0074] S7. In S3, if the products are continuously judged as unqualified, the machine should be stopped and an inspection should be carried out. The number of products continuously judged as unqualified can be set according to the specific situation of the enterprise. For example, if 5-10 pieces of cardboard are continuously judged as unqualified, the die-cutting machine may have a major equipment failure and needs to be stopped for maintenance.

[0075] Working principle: First, the operator sets the parameters according to the preset drawings of the carton and adjusts the position of the detection component 3. Then, a piece of cardboard 11 is die-cut for testing to ensure that the position of the detection component 3 is usable. Then, the equipment is started for continuous production. Qualified products are directly sent to the next station for folding via the conveyor component 2. Unqualified products are sent to the collection component 6 by the rejection mechanism for unified recycling and rework. No manual visual identification is required, which improves efficiency and accuracy.

[0076] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0077] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A paperboard post die cutting blank detection apparatus, characterized by, The utility model relates to a paperboard cutting quality detection and removal device, including: a machine table installed on the ground, one end connected with the die cutting machine discharge end; a conveying assembly for conveying paperboard, including a plurality of drive rollers and a plurality of conveying belts, the drive rollers and the conveying belts are in transmission connection, a plurality of the conveying belts are arranged at intervals; a detection assembly for detecting whether there is a gap formed after being die cut on the paperboard; a positioning mechanism for adjusting the relative position of the detection assembly on the machine table, including a longitudinal assembly and a transverse assembly; a rejection mechanism for rejecting the unqualified paperboard detected from the conveying belt; a collection assembly for collecting the rejected unqualified paperboard; a controller arranged on the die cutting machine discharge end for controlling the conveying assembly, the detection assembly, the positioning mechanism and the rejection mechanism; wherein the detection assembly includes a plurality of groups of transmitting ends and receiving ends, the transmitting ends and the receiving ends correspond one by one and are electrically connected with the controller, the rejection mechanism includes a lifting assembly, a separation assembly and a discharge assembly, the lifting assembly can make the paperboard move away from the conveying belt, the separation assembly can abut against the paperboard and make the paperboard move towards the discharge assembly, and the discharge assembly can make the paperboard move towards the collection assembly; the controller includes a control box, an operation panel, a processor and a signal end, the operation panel is fixedly arranged on the control box, the operation panel, the processor and the signal end are provided with a mainboard forming signal communication therebetween, wherein the operation panel is used for setting operation parameters and controlling the conveying assembly, the detection assembly, the positioning mechanism and the rejection mechanism, the signal end is used for receiving and sending signals, and the processor is used for processing the signals received by the signal end.

2. A paperboard die-cut blank detection apparatus as defined in claim 1, wherein: the longitudinal assembly includes a longitudinal rail and a longitudinal mover, the transverse assembly includes a transverse rail and a plurality of transverse movers, the longitudinal mover is in sliding connection with the longitudinal rail, the transverse rail is fixedly connected with the longitudinal mover, the transverse mover is in sliding connection with the transverse rail, the longitudinal assembly and the transverse assembly are both provided in two groups, the transmitting end is fixedly connected with the transverse mover in one group of the transverse assembly, and the receiving end is fixedly connected with the transverse mover in another group of the transverse assembly.

3. A paperboard die-cut blank detection apparatus as defined in claim 1, wherein: the lifting assembly includes a power source and a pushing piece, the pushing piece includes a base and a plurality of pushing plates fixedly connected with each other, the power source is fixedly connected with the machine table, the base is fixedly connected with the output end of the power source, and the pushing plates can pass through the gap between two adjacent conveying belts.

4. A paperboard die-cut blank detection apparatus as in claim 1, wherein: the separation assembly includes a shell, a support, a rotating shaft, a rubber wheel and a first motor, the shell is fixedly connected with the machine table, the support is in sliding connection with the shell, the rotating shaft is in rotational connection with the support, the rubber wheel is fixedly connected with the rotating shaft, the first motor is fixedly connected with the support and in transmission connection with the rotating shaft, and the shell is provided with an elastic element, and the two ends of the elastic element are fixedly connected with the machine table and the support respectively.

5. A paperboard die-cut blank detection apparatus as in claim 1, wherein: the discharge assembly includes a second motor, a drive rod and a discharge belt, the drive rod is in rotational connection with the machine table, the output end of the second motor is fixedly connected with the drive rod, and the discharge belt is in transmission connection with the drive rod.

6. A paperboard die-cut blank detection apparatus as in claim 1, wherein: The collecting assembly comprises a material frame and a tray, the material frame is fixedly connected with the machine, the tray is placed in the material frame and can be separated from the material frame, and a soft pad is fixedly connected to the inner wall of the material frame.

7. A method of inspection for a web inspection apparatus for performing the inspection by the web inspection apparatus according to any one of claims 1 to 6, characterized by, It comprises the following steps: S1, setting parameters according to the development drawing of the preset carton through the operation panel of the controller, and adjusting the transmitting end and the receiving end of the detection assembly to appropriate positions by using the positioning mechanism; S2, in the test stage, starting the die-cutting machine to die-cut a paperboard, so that the paperboard enters the conveying belt from the discharge end of the die-cutting machine, and ensuring that the signal transmitted by the transmitting end positioned in S1 can pass through the gap formed by the die-cutting of the paperboard and be received by the receiving end; S3, in the formal starting stage, after the paperboard passes through the detection area, the signal transmitted by the transmitting end at the corresponding position is shielded, thereby triggering the controller to start timing, and the different times of the detection assembly being shielded at each position are used to detect whether the die-cutting of the paperboard conforms to the drawing size; S4, in S3, if it is determined to be qualified, the paperboard is conveyed to the next station by the conveying belt; S5, in S3, if it is determined to be unqualified, the rejection mechanism is started, the controller sends a signal to the lifting assembly through the signal end, the lifting assembly lifts the paperboard passing through the push plate, then the paperboard is pushed forward by the constantly rotating rubber wheels in the disengagement assembly, so that the paperboard falls onto the discharge belt of the discharge assembly, and finally falls into the material frame through the discharge belt; S6, in S5, the number of times of executing the rejection mechanism is counted, the qualification rate of the batch is calculated and fed back to the operation panel of the controller; S7, in S3, if it is continuously determined to be unqualified, the machine is stopped and the detection is reported.

8. The method of claim 7, wherein: S3.1, when the paperboard starts to be conveyed through the detection assembly by the conveying belt, the signals emitted by the two transmitting ends on both sides are shielded, at this time, the detection starts, the controller starts timing, and the transmitting ends aligned with the gaps formed by the die-cutting are still not shielded, the paperboard continues to advance under the conveying of the conveying belt, when the middle part of the paperboard that does not need to be die-cut forms a shield to the signals emitted by the middle transmitting ends, a first time is obtained, a first calculation is performed, the length of the gap is calculated according to the conveying speed of the conveying belt and the obtained first time, and is compared with the size of the development drawing preset in S1 to determine whether the length of the gap is qualified.

9. A method of detecting according to claim 8, wherein: S3.2, in S3.2, the middle transmitting ends are shielded by the middle part of the paperboard that does not need to be die-cut, a second timing starts, when the middle transmitting ends cross the middle part of the paperboard that does not need to be die-cut, the corresponding receiving ends receive the signals again, a second time is obtained, a second calculation is performed, the length of the middle part of the paperboard that does not need to be die-cut is calculated according to the conveying speed of the conveying belt and the obtained second time, and is compared with the size of the development drawing preset in S1 to determine whether the length is qualified.

10. A method of detecting according to claim 9, wherein: The S3 further comprises S3.3, in which the paperboard continues to advance until the two emitting ends on both sides are no longer shielded by the paperboard, representing that the paperboard has completely passed through the detection area, a third time is obtained, a third calculation is performed, the total width of the paperboard is calculated according to the conveying speed of the conveying belt and the obtained third time, and the total width is subtracted from the lengths calculated in S3.1 and S3.2, so as to obtain the notch length on the other side of the paperboard, and the notch length is compared with the preset development diagram size to determine whether it is qualified.

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