A carton identification and forming method of a carton bottom closing and forming machine

Abstract

The present application relates to a kind of carton identification forming methods of carton bottom forming machine, comprising the following steps: step one: the unfolded paper box to be detected is randomly placed in conveying structure, and the paper box to be detected is conveyed to the first sensor and the second sensor below with conveying structure;Step two: the first sensor and the second sensor respectively send signal, and respectively send the received signal to control system, the control system judges which swing wing in swing wing assembly is located above the paper box to be detected;Step three: the control system controls the assembly component to the paper box to be detected according to the judgment result and is formed into bottom.The present application is used to judge the direction of current paper box, so that the system can identify the direction of paper box, so that the bottom forming method is flexibly changed, fundamentally solves the problem that the direction of paper box needs to be unified during the use of bottom forming machine, function is realized simply, and it is easy and reliable to execute.

Description

Technical Field

[0001] This invention relates to a paper box identification and forming method for a paper box bottom forming machine, belonging to the technical field of paper box bottom forming machines. Background Technology

[0002] Cardboard boxes are now ubiquitous in our lives, with the interlocking self-locking bottom cardboard box being the most mainstream type currently on the market. These boxes typically have similar bottom flap structures, requiring the flaps to be folded up in a specific sequence before the flap's front tongue is pressed into the bottom structure to lock it in place. This process is generally referred to as bottom locking, and currently, bottom locking is often done by cardboard box locking machines or manually.

[0003] Currently, most bottom-fastening machines on the market only operate in one specific direction, requiring the cardboard board material to be fed in a specific orientation. None of these machines possess the ability to recognize the orientation of the cardboard box after it has been opened; they are only suitable for bottom-fastening boxes with a fixed orientation. When the box's orientation changes, the system cannot recognize the change and make corresponding adjustments. If the machine continues operating as before, the bottom structure of the box will be damaged. Therefore, the entire bottom-fastening system still relies on manual labor. The box must be manually aligned before being placed into the feed inlet (the die-cutting plate used in box production must also be fixed). This process works fine for neatly aligned cardboard boards, but when the orientation is disrupted, manual intervention is required.

[0004] Currently, very few bottom-fastening machines on the market achieve the effect of recognizing the direction of objects. They generally use image scanning to determine the orientation. A camera scans the current image information, which is then uploaded to the control system. The control system uses algorithms to reconstruct and analyze the image data to determine the specific situation of the surface scanned by the camera. However, this method is costly, energy-intensive, and relatively complex in machine structure. Furthermore, the harsh environment of industrial production can easily cause camera blurring, leading to abnormal data acquisition from the cardboard box. Additionally, this method is costly to develop. Therefore, most bottom-fastening machines on the market currently do not have a cardboard box orientation determination process. Summary of the Invention

[0005] This invention provides a paper box identification and forming method for a paper box bottom forming machine, which is used to determine the current direction of paper box insertion, enabling the system to identify the insertion direction of the paper box and flexibly change the bottom-fastening method. It fundamentally solves the problem of needing to unify the paper box insertion direction during the use of the bottom-fastening machine. The function is simple to implement and easy and reliable to execute.

[0006] A paper box identification and forming method of a paper box bottom forming machine includes a conveying structure for conveying the paper box to be detected, a driving device for driving the conveying structure to work, and a first sensor and a second sensor located above the paper box to be detected. The first sensor and the second sensor signals are connected to a control system and transmit signals to the control system. An assembly component is connected to the control system and is used to fold the paper box in a sequential order.

[0007] The cardboard box to be tested, facing the first and second sensors, includes a randomly oriented rocker assembly, which comprises a first rocker, a second rocker, a third rocker, and a fourth rocker.

[0008] The projection of the first and second sensors onto the detection point of the rocker assembly is smaller than the width of the cardboard box to be detected, including the following steps:

[0009] Step 1: Randomly place the unfolded paper box to be tested into the conveying structure. The paper box to be tested is conveyed by the conveying structure to the detection position of the first sensor and the second sensor.

[0010] Step 2: The first sensor and the second sensor send signals respectively, and send the received signals to the control system respectively. The control system determines the specific direction of each rocker in the rocker assembly.

[0011] Step 3: The control system controls the assembly components to snap the bottom of the cardboard box to be tested into shape based on the judgment result.

[0012] The first sensor and the second sensor projected onto the detection points of the rocker assembly include a first detection point and a second detection point.

[0013] The first rocker arm comprises, from left to right, a second rectangular region, a third rectangular region, and a fourth rectangular region. The second and fourth rectangular regions are located on either side of the third rectangular region, with the furthest distance between them approaching the width of the corresponding side of the cardboard box. The third rectangular region is located between the second and fourth rectangular regions, and its length does not exceed that of the second and fourth rectangular regions (it is usually 0.5-3cm shorter than the length of the second and fourth rectangular regions). The signals received by the first and second detection points are both "rocker arm can be detected".

[0014] The second rocker arm, from left to right, includes a fifth rectangular region and a second triangular region. One right-angled side of the second triangular region is collinear with one wide side of the fifth rectangle, and the other right-angled side is adjacent to the vertical side of the fifth rectangle. The length of the side of the second triangular region adjacent to each of the five rectangles is less than the length of the fifth rectangular region. The signal received by the first detection point is "rocker arm can be detected", and the signal received by the second detection point is "rocker arm cannot be detected".

[0015] The third rocker arm comprises, from left to right, a first triangular region and a first rectangular region. The length of the right right-angled side of the first triangular region is less than the length of the left side of the first rectangular region. The signal received by the first detection point is "rocker arm cannot be detected," and the signal received by the second detection point is "rocker arm can be detected."

[0016] The fourth rocker arm, from left to right, comprises a third triangular region, a sixth rectangular region, and a fourth triangular region. The lengths of the sides of the third and fourth triangular regions adjacent to the sixth rectangular region are less than the length of the sixth rectangular region. The signals received by both the first and second detection points are "rocker arm not detected".

[0017] The first and second sensors can be photoelectric sensors or through-beam sensors, etc., to achieve real-time monitoring of the status of specific points.

[0018] The sensor detects specific points, and the four winglets at the bottom of the cardboard box have distinct characteristics. Each winglet has a different shape, and the orientation of the cardboard box is determined by whether a specific point is located on the structure of the winglets.

[0019] The first and second sensors are located approximately 20mm from the top edge of the cardboard box structure. At the same time, there is a sensor monitoring point approximately 8mm from the left and right vertical edges of the wing. This determines whether there are any non-transparent obstructions at the current sensor detection point and obtains data from the two sensors to determine the insertion direction of the cardboard box.

[0020] The first and second sensors should be mounted on an adjustable structural component. While ensuring the sensor faces a constant surface on the cardboard box, the size of the bottom flaps will vary depending on the type of cardboard box. Therefore, the sensor positions can be adjusted automatically or manually as needed. Different cardboard boxes have roughly the same bottom flap shape, with the flaps being enlarged or reduced proportionally. Therefore, to ensure the sensor reaches the designated feature point, its vertical height must be stable; the sensor position only needs to change horizontally.

[0021] The first rocker arm comprises, from left to right, a second rectangular region, a third rectangular region, and a fourth rectangular region, wherein the length of the third rectangular region is less than the lengths of the second and fourth rectangular regions.

[0022] The second rocker arm includes, from left to right, a fifth rectangular region and a second triangular region, wherein the shorter side of the second triangular region is shorter than the length of the fifth rectangular region;

[0023] The third rocker includes a first triangular region and a first rectangular region from left to right, wherein the shorter side of the first triangular region is less than the length of the first rectangular region.

[0024] The fourth rocker arm includes, from left to right, a third triangular region, a sixth rectangular region, and a fourth triangular region, wherein the length of the longer side of the third and fourth triangular regions is less than the length of the sixth rectangular region.

[0025] The first sensor's projection onto the detection point of the rocker assembly is located within the second rectangular region and the fifth rectangular region, and outside the first triangular region and the third triangular region;

[0026] The second sensor's projection onto the detection point of the rocker assembly is located within the first rectangular region and the fourth rectangular region, and outside the second triangular region and the fourth triangular region.

[0027] Step two specifically includes four scenarios:

[0028] Scenario 1: The first sensor is not triggered, but the second sensor is triggered. This means that the beam emitted by the first sensor passes through the corresponding first detection point without being blocked by the rocker structure, resulting in the sensor being in an untriggered state. When the beam of the second sensor reaches the second detection point, it is blocked by the rocker structure, causing the sensor to be triggered. It can be seen that the third rocker is located above the cardboard box to be tested. At this time, the first rocker is on the left, the second rocker is opposite, and the fourth rocker is on the right.

[0029] Scenario 2: The first and second sensors are triggered simultaneously, indicating that the light beams emitted by the first and second sensors have not passed through the corresponding detection points. This means that the two detection points corresponding to the sensors are both on the structure of the cardboard box wing, so that the light emitted by the two sensors is blocked by the wing structure and triggered. It can be seen that the first wing is located above the cardboard box to be tested. At this time, the second wing is on the left, the third wing is on the right, and the fourth wing is on the opposite side.

[0030] Scenario 3: The first sensor is triggered, but the second sensor is not triggered. This means that the beam emitted by the first sensor does not pass through the detection point. It indicates that the beam emitted by the first sensor is blocked by the rocker structure at the first detection point, causing the sensor to be in the triggered state. The beam emitted by the second sensor passes through the corresponding second detection point, causing the sensor to be in the untriggered state. It can be seen that the second rocker is located above the cardboard box to be tested. At this time, the first rocker is on the right, the third rocker is opposite, and the fourth rocker is on the left.

[0031] Case 4: Neither the first nor the second sensor is triggered. This means that the beams of the sensors pass through the detection points and are not blocked by the rocker structure. This indicates that the two detection points are empty on the rocker. Therefore, the fourth rocker is located above the cardboard box to be tested. At this time, the first rocker is on the opposite side, the second rocker is on the right, and the third rocker is on the left.

[0032] The assembly includes a front folding piece, a left folding piece, a right folding piece, and a rear folding piece for folding the first, second, third, and fourth rockers inward (the "front, left, right, and rear" directions refer to folding mechanisms with fixed positions relative to the detection point; the side with the detection point is defined as the "front," and the other sides relative to the "front" are called the "left," "right," and "rear." The folding pieces have symmetrical and substantially identical features, and their structures include, but are not limited to, single or combined sheet-like structures).

[0033] In step two, the assembly components will assemble the components according to the four possible scenarios:

[0034] Scenario 1: When the first wing is above the cardboard box to be tested, first fold the first wing up using the front folding piece, then fold the second and third wing up using the left and right folding pieces, and finally fold the fourth wing up using the rear folding piece;

[0035] Scenario 2: When the second wing is above the cardboard box to be tested, first fold the first wing up using the right folding piece, then fold the second and third wing up using the front and rear folding pieces, and finally fold the fourth wing up using the left folding piece;

[0036] Scenario 3: When the third wing is above the cardboard box to be tested, first fold the first wing up using the left folding piece, then fold the third and second wing up using the front and rear folding pieces, and finally fold the fourth wing up using the right folding piece;

[0037] Scenario 4: When the fourth wing is above the cardboard box to be tested, first fold the first wing up using the rear folding piece, then fold the second and third wing up using the right and left folding pieces, and finally fold the fourth wing up using the front folding piece.

[0038] After completing the above four steps, you only need to push the bottom tongue in the middle to finish.

[0039] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0040] This invention selects a feature point detection and recognition method to determine the orientation of the cardboard box by monitoring the state of two feature points of the cardboard box.

[0041] This invention adds a paper box orientation recognition function, making machines in the market more intelligent and more capable of recognizing and adapting to raw materials. The machine can autonomously determine the orientation of the raw materials and make corresponding adjustments, greatly saving labor costs in production and improving production efficiency.

[0042] The wing folding structure of the present invention has high symmetry. After the paper box changes direction, the folding structure remains relatively unchanged, resulting in high stability, low production cost, and reliable structure.

[0043] This invention boasts low development and production costs, and is simple to implement. This method uses only two simple photoelectric sensors to accurately determine the position and status of two points. The simple, reliable, and mature technology results in a stable architecture, longer lifespan, and more accurate and reliable data. Two switch signals are sufficient to determine the four directions of the box, with extremely low development costs. The development cost of adding recognition functionality to existing machines on the market is essentially negligible. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a schematic diagram of the structure of the paper box in the paper box identification and forming method of the paper box bottom forming machine of the present invention (1);

[0046] Figure 2 This is a schematic diagram of the structure of the paper box in the paper box identification and forming method of the paper box bottom forming machine of the present invention (1);

[0047] Figure 3 Figure (1) illustrates four scenarios in the embodiments of the present invention;

[0048] Figure 4 Figure (2) illustrates four scenarios in the embodiments of the present invention.

[0049] In the diagram: 1-First rocker; 2-Second rocker; 3-Third rocker; 4-Fourth rocker; 5-First triangular region; 6-First rectangular region; 7-Second rectangular region; 8-Third rectangular region; 9-Fourth rectangular region; 10-Fifth rectangular region; 11-Second triangular region; 12-Third triangular region; 13-Sixth rectangular region; 14-Fourth triangular region. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and 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.

[0051] A paper box identification and forming method of a paper box bottom forming machine includes a conveying structure for conveying the paper box to be detected, a driving device for driving the conveying structure to work, and a first sensor and a second sensor located above the paper box to be detected. The first sensor and the second sensor signals are connected to a control system and transmit signals to the control system. An assembly component is connected to the control system and is used to fold the paper box in a sequential order.

[0052] The cardboard box to be tested, facing the first and second sensors, includes a rocker assembly with skewed orientations. The rocker assembly includes a first rocker 1, a second rocker 2, a third rocker 3, and a fourth rocker 4.

[0053] The projection of the first and second sensors onto the detection point of the rocker assembly is smaller than the width of the cardboard box to be detected, including the following steps:

[0054] Step 1: Randomly place the unfolded paper box to be tested into the conveying structure. The paper box to be tested is conveyed by the conveying structure to the area below the first and second sensors.

[0055] Step 2: The first sensor and the second sensor send signals respectively, and send the received signals to the control system respectively. The control system determines which rocker arm in the rocker arm assembly is located above the cardboard box to be detected.

[0056] Step 3: The control system controls the assembly components to assemble the cardboard box to be tested based on the judgment result.

[0057] The first and second sensors can be photoelectric sensors or through-beam sensors, etc., to achieve real-time monitoring of the status of specific points.

[0058] The sensor detects specific points, and the four winglets at the bottom of the cardboard box are somewhat different, each with a different shape. The cardboard box orientation is determined by whether a specific point is located on the structure of the winglets.

[0059] The first and second sensors are located approximately 20mm from the top edge of the cardboard box structure. At the same time, there is a sensor monitoring point approximately 8mm from the left and right vertical edges of the wing. The system determines whether there are any non-transparent obstructions at the current sensor detection point and obtains data from the two sensors to determine the insertion direction of the cardboard box.

[0060] The first and second sensors should be mounted on an adjustable structural component. While ensuring the sensor faces a constant surface on the cardboard box, the size of the bottom flaps will vary depending on the type of cardboard box. Therefore, the sensor positions can be adjusted automatically or manually as needed. Different cardboard boxes have roughly the same bottom flap shape, with the flaps being enlarged or reduced proportionally. Therefore, to ensure the sensor reaches the designated feature point, its vertical height must be stable; the sensor position only needs to change horizontally.

[0061] Reference Figure 1 and Figure 2 The cardboard box to be tested is a type of cardboard box used for bottom fastening machines. Its bottom structure is unique, allowing for interlocking through a specific folding sequence, resulting in a robust bottom structure. The shapes of the first to fourth wing 4 at the bottom differ slightly. The left and right vertical edges of the first wing 1 are relatively complete, while the third wing 3 and the second wing 2 are missing a portion of their left and right vertical edges, respectively, although the remaining vertical edges are relatively complete. The fourth wing 4 has missing portions of both its left and right vertical edges. Based on these structural characteristics, a method for determining the cardboard box's orientation, specifically a point-based state judgment method, is derived. The orientation of the cardboard box is determined by the state of a specific detection point on the wing surface detected by the sensor. This point is approximately 20mm to the left or right of the top edge of the wing and about 8mm from the left and right vertical edges of the wing. This data varies considerably depending on the size of the boxes the machine needs to produce.

[0062] The first rocker 1 includes, from left to right, a second rectangular region 7, a third rectangular region 8, and a fourth rectangular region 9, wherein the length of the third rectangular region 8 is less than the lengths of the second rectangular region 7 and the fourth rectangular region 9. The second rocker 2 includes, from left to right, a fifth rectangular region 10 and a second triangular region 11, wherein the shorter side of the second triangular region 11 is less than the length of the fifth rectangular region 10. The third rocker 3 includes, from left to right, a first triangular region 5 and a first rectangular region 6, wherein the shorter side of the first triangular region 5 is less than the length of the first rectangular region 6. The fourth rocker 4 includes, from left to right, a third triangular region 12, a sixth rectangular region 13, and a fourth triangular region 14, wherein the longer side of the third triangular region 12 and the fourth triangular region 14 is less than the length of the sixth rectangular region 13.

[0063] The first sensor is projected onto the detection point of the rocker assembly, which is located within the second rectangular region 7 and the fifth rectangular region 10 and outside the first triangular region 5 and the third triangular region 12.

[0064] The second sensor's projection onto the detection point of the rocker assembly is located within the first rectangular region 6 and the fourth rectangular region 9, and outside the second triangular region 11 and the fourth triangular region 14.

[0065] Step two specifically includes four scenarios:

[0066] Scenario 1: The first sensor is not triggered, but the second sensor is triggered. This means that the beam emitted by the first sensor passes through the corresponding first detection point and is not blocked by the rocker structure, resulting in the sensor being in an untriggered state. When the beam of the second sensor reaches the second detection point, it is blocked by the rocker structure, resulting in the sensor being triggered. It can be seen that the third rocker 3 is located above the cardboard box to be tested.

[0067] Scenario 2: The first sensor and the second sensor are triggered at the same time, which means that the light beams emitted by the first sensor and the second sensor have not passed through the corresponding detection points. This indicates that the two detection points corresponding to the sensors are both on the structure of the cardboard box wing, so that the light emitted by the two sensors is blocked by the wing structure and triggered. It can be seen that the first wing 1 is located above the cardboard box to be tested.

[0068] Scenario 3: The first sensor is triggered, but the second sensor is not triggered. This means that the beam emitted by the first sensor does not pass through the detection point. It indicates that the beam emitted by the first sensor is blocked by the rocker structure at the first detection point, causing the sensor to be in the triggered state. The beam emitted by the second sensor passes through the corresponding second detection point, causing the sensor to be in the untriggered state. It can be seen that the second rocker 2 is located above the cardboard box to be tested.

[0069] Case 4: Neither the first nor the second sensor is triggered. This means that the beams of the sensors pass through the detection points and are not blocked by the rocker structure. This indicates that the two detection points are empty on the rocker, and the fourth rocker 4 is located above the cardboard box to be tested.

[0070] The assembly includes a front folding piece, a left folding piece, a right folding piece, and a rear folding piece that fold the first rocker 1, the second rocker 2, the third rocker 3, and the fourth rocker 4 inward in sequence.

[0071] Based on the four scenarios in step two, the assembly components will be assembled separately for each of the four scenarios:

[0072] Scenario 1: When the first rocker 1 is detected to be on the surface to be detected, the first rocker 1 is first folded up by the front folding piece, then the third rocker 3 and the second rocker 2 are folded up by the left and right folding pieces, and finally the fourth rocker 4 is folded up by the rear folding piece to achieve assembly.

[0073] Scenario 2: When the second rocker 2 is above the cardboard box to be tested, the first rocker 1 is first folded up by the front folding piece, then the third rocker 3 and the second rocker 2 are folded up by the right folding piece and the rear folding piece, and finally the fourth rocker 4 is folded up by the left folding piece to achieve assembly.

[0074] Scenario 3: When the third rocker 3 is above the cardboard box to be tested, the first rocker 1 is first folded up by the right folding piece, then the third rocker 3 and the second rocker 2 are folded up by the front folding piece and the left folding piece, and finally the fourth rocker 4 is folded up by the rear folding piece to achieve assembly.

[0075] Scenario 4: When the third rocker 3 is above the cardboard box to be tested, the first rocker 1 is first folded up by the left folding piece, then the third rocker 3 and the second rocker 2 are folded up by the right folding piece and the rear folding piece, and finally the fourth rocker 4 is folded up by the front folding piece to achieve assembly.

[0076] The relative orientation of the box in this invention is relative, not a fixed shape. When the box is opened, it is a cuboid with a total of 6 faces. The face facing the sensor position of the detection point is called "top", "front", "in front" or "front".

[0077] The term "bottom-fastening machine" is just a name. In this article, the terms "bottom-fastening machine," "forming machine," "forming machine," "paper box bottom-fastening forming machine," and "paper box bottom-fastening forming machine" all refer to a type of machine used to unfold and form bottom-fastening paper.

[0078] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and these variations still fall within the protection scope of the present invention.

Claims

1. A method for identifying and forming paper boxes using a paper box bottom-forming machine, characterized in that: The device includes a conveying structure for conveying a paper box to be tested, a driving device for driving the conveying structure, and a first sensor and a second sensor located above the paper box to be tested. The first sensor and the second sensor signals are connected to the control system and transmit signals to the control system. An assembly assembly is connected to the control system and is used to fold the paper box in a sequential order. The cardboard box to be tested, facing the first and second sensors, includes a randomly oriented rocker assembly, which comprises a first rocker, a second rocker, a third rocker, and a fourth rocker; the detection points projected by the first and second sensors onto the rocker assembly are smaller than the width of the cardboard box to be tested. Includes the following steps: Step 1: Randomly place the unfolded paper box to be tested into the conveying structure. The paper box to be tested is conveyed by the conveying structure to the detection position of the first sensor and the second sensor. Step 2: The first sensor and the second sensor send signals respectively, and send the received signals to the control system respectively. The control system determines the specific direction of each rocker in the rocker assembly. Step 3: The control system controls the assembly components to snap the bottom of the cardboard box to be tested into shape based on the judgment result; The first sensor and the second sensor are projected onto the detection points of the rocker assembly, including the first detection point and the second detection point; The first rocker arm includes a second rectangular area, a third rectangular area and a fourth rectangular area from left to right. The signals received by the first detection point and the second detection point are both "rocker arm can be detected". The second rocker arm, from left to right, includes a fifth rectangular area and a second triangular area. The signal received by the first detection point is "rocker arm can be detected", and the signal received by the second detection point is "rocker arm cannot be detected". The third rocker arm includes a first triangular region and a first rectangular region from left to right. The signal received by the first detection point is "rocker arm cannot be detected", and the signal received by the second detection point is "rocker arm can be detected". The fourth rocker arm, from left to right, includes a third triangular region, a sixth rectangular region, and a fourth triangular region. The signals received by the first and second detection points are both "rocker arm cannot be detected".

2. The paper box identification and forming method of the paper box bottom forming machine according to claim 1, characterized in that: The first sensor's projection onto the detection point of the rocker assembly is located within the second rectangular region and the fifth rectangular region, and outside the first triangular region and the third triangular region; The second sensor is projected onto the detection point of the rocker assembly, which is located within the first rectangular area and the fourth rectangular area, and outside the second triangular area and the fourth triangular area.

3. The paper box identification and forming method of the paper box bottom forming machine according to claim 2, characterized in that: Step two specifically includes four scenarios: Scenario 1: The first sensor is not triggered, but the second sensor is triggered. This means that the beam emitted by the first sensor passes through the corresponding first detection point and is not blocked by the rocker structure, resulting in the first sensor being in an untriggered state. When the beam of the second sensor reaches the second detection point, it is blocked by the rocker structure, resulting in the second sensor being triggered. Thus, the third rocker is located above the cardboard box to be tested. Scenario 2: The first sensor and the second sensor are triggered at the same time, which means that the light beams emitted by the first sensor and the second sensor do not pass through the corresponding detection points. This indicates that the first detection point and the second detection point corresponding to the first sensor and the second sensor are both on the structure of the cardboard box wing, so that the light beams emitted by the first sensor and the second sensor are both blocked by the wing structure and triggered, and the first wing is located above the cardboard box to be tested. Scenario 3: The first sensor is triggered, but the second sensor is not triggered. This means that the beam emitted by the first sensor does not pass through the detection point. It indicates that the beam emitted by the first sensor is blocked by the rocker structure at the first detection point, causing the first sensor to be in the triggered state. The beam emitted by the second sensor passes through the corresponding second detection point, causing the second sensor to be in the untriggered state. Thus, the second rocker is located above the cardboard box to be tested. Scenario 4: Neither the first nor the second sensor is triggered. This means that the beams from both the first and second sensors pass through the detection point and are not blocked by the rocker structure. This indicates that the first and second detection points are empty on the rocker, and the fourth rocker is located above the cardboard box to be tested.

4. The paper box identification and forming method of the paper box bottom forming machine according to claim 3, characterized in that: The assembly includes a front folding piece, a left folding piece, a right folding piece, and a rear folding piece for folding the first, second, third, and fourth rockers inward.

5. The paper box identification and forming method of the paper box bottom forming machine according to claim 3, characterized in that: Based on the four scenarios in step two, the assembly components are assembled separately for each of the four scenarios: Scenario 1: When the first rocker arm is above the cardboard box to be tested, first fold the first rocker arm up using the front folding piece, then fold the second and third rocker arms up using the left and right folding pieces, and finally fold the fourth rocker arm up using the rear folding piece to achieve assembly. Scenario 2: When the second rocker is above the cardboard box to be tested, first fold the first rocker up using the right folding piece, then fold the second and third rockers up using the front and rear folding pieces, and finally fold the fourth rocker up using the left folding piece to achieve assembly. Scenario 3: When the third rocker is above the cardboard box to be tested, first fold the first rocker up using the left folding piece, then fold the third and second rockers up using the front and rear folding pieces, and finally fold the fourth rocker up using the right folding piece to achieve assembly. Scenario 4: When the fourth rocker is above the cardboard box to be tested, first fold the first rocker up using the rear folding piece, then fold the second and third rockers up using the right and left folding pieces, and finally fold the fourth rocker up using the front folding piece to achieve assembly.

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