Folding machine defect automatic detection and automatic kicking-out system
By using a cutting unit to cut the rough edges of the paper, a separating unit to separate incomplete paper, and a blowing mechanism to remove debris, the problem of rough edges and incomplete paper in folding machines is solved, improving the efficiency and quality of the automatic detection and automatic ejection system of folding machines.
Patent Information
- Application Number
- CN202511071283.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-31
- Publication Date
- 2025-10-31
AI Technical Summary
Existing automatic defect detection and automatic rejection systems for folding machines are ineffective in solving problems such as rough edges and incompleteness of paper, resulting in reduced folding quality and requiring the use of external tools.
A cutting unit is set up to cut the rough edges of the paper and a pressure roller is used to maintain the rigidity of the paper; a separation unit is set up to identify and separate incomplete paper using a camera; and a blowing mechanism is set up to remove debris from the surface of the paper.
It effectively avoids paper burrs affecting the folding effect, ensures that the paper meets the folding requirements, improves the folding qualification rate, and reduces the impact of debris on folding.
Smart Images

Figure CN120861441A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of folding machine technology, specifically to an automatic defect detection and automatic rejection system for folding machines. Background Technology
[0002] A folding machine is a specialized piece of equipment used for paper folding. It can automatically and accurately fold single or multiple sheets of paper according to preset folding methods (such as bi fold, accordion fold, cross fold, etc.) and specifications. It is widely used in printing, publishing, advertising, packaging and other industries, and can efficiently handle the folding needs of printed materials such as brochures, manuals, newspapers, and magazine pages, significantly improving production efficiency and finished product quality.
[0003] When using a folding machine, the cut paper is conveyed to the bottom of the machine. The paper is then folded using the folding blade and the pre-drilled folding holes. Usually, when cutting paper, the stack is cut as a whole, which can easily cause some paper to have rough edges. Due to the irregularity of the rough edges, the thickness of the covering may vary, which will reduce the folding effect.
[0004] Combining the above issues, we find that existing automatic defect detection and automatic rejection systems for folding machines on the market are difficult to simultaneously avoid the problems mentioned above. Even if they can solve the problems, they require external tools, thus failing to achieve the desired effect. Therefore, we propose an automatic defect detection and automatic rejection system for folding machines. Summary of the Invention
[0005] The purpose of this invention is to provide an automatic defect detection and automatic rejection system for folding machines, so as to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic defect detection and automatic rejection system for a folding machine, comprising a folding machine, wherein a detection mechanism is provided on one side of the folding machine; The detection mechanism includes a cutting unit, which is located on one side of the folding machine and is used to cut paper larger than the standard paper area. The detection mechanism also includes a separation unit, which is located on top of the cutting unit and is used to remove defective paper. The top of the cutting unit is equipped with a blowing mechanism, which is used to blow away debris from the surface of the paper after cutting.
[0007] Preferably, the cutting unit includes a first conveying component and a second conveying component. The second conveying component is disposed on one side of the folding machine. The surfaces of the second conveying component and the first conveying component are fixedly connected. The inner walls of both the first and second conveying components are rotatably connected to extrusion rollers. A first electric push rod is fixedly installed on the surfaces of both the first and second conveying components. A sliding plate is slidably connected to the inner walls of both the first and second conveying components. A blade is fixedly installed on the top of the sliding plate. The telescopic end of the first electric push rod is fixedly connected to the surface of the sliding plate.
[0008] Preferably, a second electric push rod is fixedly installed on the surface of both the first and second conveying components, and a guide plate is fixedly installed on the telescopic end of the second electric push rod.
[0009] Preferably, the separation unit includes a support frame, which is fixedly installed on the top of the second conveying assembly. A camera is fixedly installed on the bottom of the support frame. A third electric push rod is fixedly installed on the surface of the second conveying assembly. The telescopic end of the third electric push rod is fixedly installed with the third conveying assembly. The bottom of the third conveying assembly is slidably connected to the surface of the folding machine.
[0010] Preferably, the surface of the second conveying component is provided with a guide groove, and the surface of the third conveying component is fixedly installed with a guide rod, the surface of the guide rod being slidably connected to the inner cavity of the guide groove.
[0011] Preferably, a stop is fixedly installed on the surface of the guide rod, and the stop cooperates with the inner wall of the guide groove.
[0012] Preferably, a connecting rod is fixedly installed at the bottom of the second conveying component, and a collection box is fixedly installed at the bottom of the connecting rod.
[0013] Preferably, the blowing mechanism includes a connecting frame, which is fixedly installed on the top of the second conveying assembly. A wind box is rotatably connected to the inner wall of the connecting frame, and an electric fan is fixedly installed on the inner wall of the wind box.
[0014] Preferably, a dustproof net is fixedly installed on the inner wall of the air box, and the dustproof net is used in conjunction with the electric fan.
[0015] Preferably, the surface of the air box is provided with positioning holes, and the number of positioning holes is several. A positioning rod is fixedly installed on the inner wall of the connecting frame, and the surface of the positioning rod is threadedly connected to the inner wall of the positioning hole.
[0016] Compared with the prior art, the beneficial effects of the present invention are: This invention, by setting up a cutting unit, can cut the rough edges of paper. By adjusting the distance of the blades, the cut paper can meet the usage requirements. At the same time, the paper can maintain its rigidity by using the pressure roller to gently squeeze the paper, thereby ensuring the stability of the cut and avoiding the impact of rough edges on the folding effect. This ensures that the paper meets the folding requirements and avoids the impact of oversized paper on the folding effect. This invention, by setting up a separation unit, can separate damaged paper. The central controller, which receives data from an external camera, sends a signal to the third electric push rod to control the third electric push rod to extend, thereby separating the third conveying component from the second conveying component, creating a large gap between them, and thus kicking out the incomplete paper. This invention incorporates a blowing mechanism. After the paper on the second conveying component is cut, an electric fan is activated by an external power source. The fan drives airflow, which is guided by a wind box to blow away debris from the paper surface. This reduces the impact of debris on folding and further ensures the folding quality rate. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the first transmission component in this invention; Figure 3 In this invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the structure of the second transmission component in this invention; Figure 5 This is a schematic diagram of the guide groove and guide rod in this invention; Figure 6 This is an exploded view of the structure of the air box, electric fan and dustproof net in this invention; Figure 7 This is an exploded view of the positioning hole, positioning rod, and connecting frame in this invention.
[0018] In the diagram: 1. Folding machine; 2. Detection mechanism; 21. Cutting unit; 2101. First conveying assembly; 2102. Second conveying assembly; 2103. Squeeze roller; 2104. First electric push rod; 2105. Sliding plate; 2106. Blade; 2107. Second electric push rod; 2108. Guide plate; 22. Separation unit; 2201. Support frame; 2202. Camera; 2203. Third electric push rod; 2204. Third conveying assembly; 2205. Guide groove; 2206. Guide rod; 2207. Stop block; 2208. Connecting rod; 2209. Collection box; 3. Blowing mechanism; 31. Connecting frame; 32. Air box; 33. Electric fan; 34. Dustproof net; 35. Positioning hole; 36. Positioning rod. Detailed Implementation
[0019] 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.
[0020] Example 1: Please refer to Figures 1 to 7 The present invention provides a technical solution: an automatic defect detection and automatic rejection system for a folding machine, including a folding machine 1, wherein a detection mechanism 2 is provided on one side of the folding machine 1; The testing unit 2 includes a cutting unit 21, which is located on one side of the folding machine 1. The cutting unit 21 is used to cut paper that is larger than the area of standard paper.
[0021] As a further definition of the detection mechanism 2 of the present invention, the cutting unit 21 includes a first conveying component 2101 and a second conveying component 2102. The second conveying component 2102 is disposed on one side of the folding machine 1. The surfaces of the second conveying component 2102 and the first conveying component 2101 are fixedly connected. The inner walls of both the first conveying component 2101 and the second conveying component 2102 are rotatably connected to a squeezing roller 2103. A first electric push rod 2104 is fixedly mounted on the surfaces of both the first conveying component 2101 and the second conveying component 2102. Sliding plates are slidably connected to the inner walls of both the first conveying component 2101 and the second conveying component 2102. 2105, a blade 2106 is fixedly installed on the top of the sliding plate 2105, and the telescopic end of the first electric push rod 2104 is fixedly connected to the surface of the sliding plate 2105. By setting the cutting unit 21, the rough edges of the paper can be cut. By adjusting the distance of the blade 2106, the cut paper can meet the usage requirements. At the same time, the paper can be kept hard by the slight pressure of the pressure roller 2103, thus ensuring the stability of the cutting and avoiding the impact of the rough edges of the cardboard on the folding effect. This ensures that the paper meets the folding requirements and avoids the impact of the paper being too large on the folding effect.
[0022] A second electric push rod 2107 is fixedly installed on the surface of both the first conveying component 2101 and the second conveying component 2102. A guide plate 2108 is fixedly installed on the telescopic end of the second electric push rod 2107. By setting the second electric push rod 2107 and starting the second electric push rod 2107 through an external power supply, the guide plate 2108 can be pushed closer to the paper, thereby placing the paper at the center of the first conveying component 2101 or the second conveying component 2102.
[0023] The specific implementation of this embodiment is as follows: Paper is first placed above the first conveying assembly 2101. The first conveying assembly 2101, the second conveying assembly 2102, and the third conveying assembly 2204 all consist of a support plate and an electric conveying roller, enabling the conveying of paper. During the conveying process, the rotation direction of the pressure roller 2103 is opposite to the rotation angle of the electric conveying roller, thereby achieving slight pressure on the paper. Simultaneously, during the paper's movement, the first electric push rod 2104 is activated by an external power source. Through the retraction and extension of the first electric push rod 2104, the sliding plate 2105 can slide inside the first conveying assembly 2101 and the second conveying assembly 2102. The position of the blade 2106 is then adjusted. Through the action of the pressure roller 2103, the paper is kept rigid during movement, thus enabling the blade 2106 to cut off the excess edges of the paper. After the paper passes through the first conveying component 2101, the second conveying component 2102 is located below the first conveying component 2101, and the two are in a perpendicular state. When the finger plate falls above the second conveying component 2102, the blade 2106 on the second conveying component 2102 cuts off the excess paper on the other two sides of the paper, avoiding the impact of the finger plate's rough edges on the folding effect. This ensures that the paper meets the folding requirements and avoids the impact of the paper being too large on the folding effect.
[0024] Example 2: Please refer to Figure 1 , Figure 4 and Figure 5 The present invention provides a technical solution: an automatic defect detection and automatic rejection system for a folding machine 1. The present invention makes corresponding improvements to the technical problems mentioned in the background art. The detection mechanism 2 also includes a separation unit 22, which is disposed on the top of the cutting unit 21. The separation unit 22 is used to reject defective paper.
[0025] As a further definition of the detection mechanism 2 of the present invention, the separation unit 22 includes a support frame 2201, which is fixedly installed on the top of the second conveying component 2102. A camera 2202 is fixedly installed on the bottom of the support frame 2201. A third electric push rod 2203 is fixedly installed on the surface of the second conveying component 2102. A third conveying component 2204 is fixedly installed on the telescopic end of the third electric push rod 2203. The bottom of the third conveying component 2204 is slidably connected to the surface of the folding machine 1. By setting the separation unit 22, the defective paper can be separated. The central controller that receives the data captured by the camera 2202 sends a signal to the third electric push rod 2203 to control the third electric push rod 2203 to extend, thereby separating the third conveying component 2204 from the second conveying component 2102, creating a large gap between them, and thus kicking out the incomplete paper.
[0026] The surface of the second conveying component 2102 is provided with a guide groove 2205, and the surface of the third conveying component 2204 is fixedly mounted with a guide rod 2206. The surface of the guide rod 2206 is slidably connected to the inner cavity of the guide groove 2205. Through the slidable connection between the guide groove 2205 and the guide rod 2206, the movement of the third conveying component 2204 can be guided, so that the third conveying component 2204 can move laterally.
[0027] A stop 2207 is fixedly mounted on the surface of the guide rod 2206. The stop 2207 cooperates with the inner wall of the guide groove 2205. By setting the stop 2207, when the stop 2207 contacts the inner wall of the guide groove 2205, the movement distance of the third conveying component 2204 can be limited, thus preventing the guide rod 2206 from separating from the guide groove 2205. A connecting rod 2208 is fixedly installed at the bottom of the second conveying component 2102, and a collection box 2209 is fixedly installed at the bottom of the connecting rod 2208. By setting the connecting rod 2208, the collection box 2209 is connected to the bottom of the second conveying component 2102. By setting the collection box 2209, incomplete paper can be collected in a centralized manner.
[0028] The specific implementation of this embodiment is as follows: During the process of conveying the cut paper on the second conveying component 2102, it passes the bottom of the support frame 2201 and is photographed by the camera 2202. The integrity of the paper is identified by the image captured by the camera 2202. When the inspected paper has missing corners, the central controller that receives the data captured by the external camera 2202 sends a signal to the third electric push rod 2203 to control the third electric push rod 2203 to extend, thereby separating the third conveying component 2204 from the second conveying component 2102, so that the two... A large gap appears between the paper and the collection box 2209 below the second conveying component 2102, thus kicking out incomplete paper. When the paper captured by the camera 2202 meets the requirements, the third electric push rod 2203 stops working, and the third conveying component 2204 is connected to the second conveying component 2102, so that the paper is conveyed by the third conveying component 2204 to the top of the folding machine 1. The folding machine 1 pushes the folding knife to squeeze the paper through the air pressure rod, and the paper is folded through the reserved folding hole.
[0029] Example 3: Please refer to Figure 1 , Figure 6 and Figure 7 The present invention provides a technical solution: an automatic defect detection and automatic rejection system for a folding machine 1. The present invention makes corresponding improvements to the technical problems mentioned in the background art. A blowing mechanism 3 is provided on the top of the cutting unit 21. The blowing mechanism 3 is used to blow away the debris on the surface of the paper after cutting.
[0030] As a further definition of the blowing mechanism 3 of the present invention, the blowing mechanism 3 includes a connecting frame 31, which is fixedly installed on the top of the second conveying assembly 2102. The inner wall of the connecting frame 31 is rotatably connected to an air box 32, and an electric fan 33 is fixedly installed on the inner wall of the air box 32. By setting the blowing mechanism 3, after the paper on the second conveying assembly 2102 is cut, the electric fan 33 is started by an external power supply. The electric fan 33 drives the airflow, and the air box 32 guides the airflow, thereby blowing away the debris on the surface of the paper, thereby reducing the impact of the debris on the folding and further ensuring the pass rate of the folding.
[0031] A dustproof mesh 34 is fixedly installed on the inner wall of the air box 32. The dustproof mesh 34 works in conjunction with the electric fan 33. By setting up the dustproof mesh 34, the amount of external dust entering the inner cavity of the air box 32 can be reduced, ensuring that the inside of the air box 32 is clean and tidy. The surface of the air box 32 is provided with positioning holes 35, and there are several positioning holes 35. A positioning rod 36 is fixedly installed on the inner wall of the connecting frame 31. The surface of the positioning rod 36 is threadedly connected to the inner wall of the positioning hole 35. Through the threaded connection between the positioning hole 35 and the positioning rod 36, the air box 32 can be adjusted at multiple angles, thereby increasing the working flexibility of the air box 32.
[0032] The specific implementation method of this embodiment is as follows: After the paper on the second conveying component 2102 is cut, the electric fan 33 is started by an external power supply. The electric fan 33 drives the airflow, and the air box 32 guides the airflow, thereby blowing away the debris on the surface of the paper, thereby reducing the impact of the debris on the folding and further ensuring the pass rate of the folding.
[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0034] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An automatic defect detection and automatic rejection system for a folding machine, comprising a folding machine (1), characterized in that: A detection mechanism (2) is provided on one side of the folding machine (1); The testing mechanism (2) includes a cutting unit (21), which is located on one side of the folding machine (1). The cutting unit (21) is used to cut paper larger than the standard paper area. The detection mechanism (2) also includes a separation unit (22), which is located on top of the cutting unit (21) and is used to remove defective paper. The top of the cutting unit (21) is provided with a blowing mechanism (3), which is used to blow away the debris on the surface of the paper after cutting.
2. The automatic defect detection and automatic rejection system for a folding machine according to claim 1, characterized in that: The cutting unit (21) includes a first conveying component (2101) and a second conveying component (2102). The second conveying component (2102) is disposed on one side of the folding machine (1). The surface of the second conveying component (2102) is fixedly connected to the surface of the first conveying component (2101). The inner walls of the first conveying component (2101) and the second conveying component (2102) are rotatably connected with a squeezing roller (2103). The surface of the first conveying component (2101) and the second conveying component (2102) is fixedly mounted with a first electric push rod (2104). The inner walls of the first conveying component (2101) and the second conveying component (2102) are slidably connected with a sliding plate (2105). The top of the sliding plate (2105) is fixedly mounted with a blade (2106). The telescopic end of the first electric push rod (2104) is fixedly connected to the surface of the sliding plate (2105).
3. The automatic defect detection and automatic rejection system for a folding machine according to claim 2, characterized in that: The surfaces of the first transmission component (2101) and the second transmission component (2102) are both fixedly mounted with a second electric push rod (2107), and the telescopic end of the second electric push rod (2107) is fixedly mounted with a guide plate (2108).
4. The automatic defect detection and automatic rejection system for a folding machine according to claim 2, characterized in that: The separation unit (22) includes a support frame (2201), which is fixedly installed on the top of the second conveying assembly (2102). A camera (2202) is fixedly installed on the bottom of the support frame (2201). A third electric push rod (2203) is fixedly installed on the surface of the second conveying assembly (2102). A third conveying assembly (2204) is fixedly installed on the telescopic end of the third electric push rod (2203). The bottom of the third conveying assembly (2204) is slidably connected to the surface of the folding machine (1).
5. The automatic defect detection and automatic rejection system for a folding machine according to claim 4, characterized in that: The surface of the second conveying component (2102) is provided with a guide groove (2205), and the surface of the third conveying component (2204) is fixedly installed with a guide rod (2206), and the surface of the guide rod (2206) is slidably connected to the inner cavity of the guide groove (2205).
6. The automatic defect detection and automatic rejection system for a folding machine according to claim 5, characterized in that: A stop (2207) is fixedly installed on the surface of the guide rod (2206), and the stop (2207) is used in conjunction with the inner wall of the guide groove (2205).
7. The automatic defect detection and automatic rejection system for a folding machine according to claim 2, characterized in that: A connecting rod (2208) is fixedly installed at the bottom of the second conveying component (2102), and a collection box (2209) is fixedly installed at the bottom of the connecting rod (2208).
8. The automatic defect detection and automatic rejection system for a folding machine according to claim 2, characterized in that: The blowing mechanism (3) includes a connecting frame (31), which is fixedly installed on the top of the second conveying assembly (2102). A wind box (32) is rotatably connected to the inner wall of the connecting frame (31), and an electric fan (33) is fixedly installed on the inner wall of the wind box (32).
9. The automatic defect detection and automatic rejection system for a folding machine according to claim 8, characterized in that: A dustproof net (34) is fixedly installed on the inner wall of the air box (32), and the dustproof net (34) is used in conjunction with the electric fan (33).
10. The automatic defect detection and automatic rejection system for a folding machine according to claim 8, characterized in that: The surface of the air box (32) is provided with positioning holes (35), and there are several positioning holes (35). The inner wall of the connecting frame (31) is fixedly installed with a positioning rod (36), and the surface of the positioning rod (36) is threadedly connected to the inner wall of the positioning hole (35).