Machine core assembly for corrugated carton sealing machine
By improving the structural design of the core components of the corrugated carton sealing machine, the problem of insufficient precision caused by spring force in the existing technology has been solved, achieving higher stability and sealing accuracy, and adapting to uniform tape application for different carton thicknesses.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG MEISEN PACKAGE CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-05-26
AI Technical Summary
In existing corrugated carton sealing machine mechanisms, the swing stroke of the front pressure roller, rear pressure roller, and blades relies on spring force, resulting in insufficient accuracy and a tendency for excessive rebound, which affects sealing accuracy.
The design employs a combination of side plate assembly, front wheel assembly, rear wheel assembly, blade assembly, and connecting rod assembly. A high-strength rigid connection is formed through the left side plate, right side plate, side plate fixing frame, and support shaft. Combined with bushings and eccentric wheels to adjust the pressure of the front and rear wheels, it ensures that the tape adheres evenly to the surface of the carton, and uses rubber rollers to enhance the adhesion effect.
It improves the stability and motion precision of the mechanism components, adapts to corrugated boxes of different thicknesses, ensures that the tape adheres evenly to the box surface, and enhances the sealing effect.
Smart Images

Figure CN224277812U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of carton sealing machine technology, and relates to a core component for a corrugated carton sealing machine. Background Technology
[0002] The core mechanism of a carton sealing machine is the main executing component of the equipment. It dominates the key sealing actions and is responsible for the conveying, positioning, bonding, and cutting of the tape. It controls the tape tension and bonding angle through precise mechanical linkage.
[0003] Chinese patent publication number CN208947735U discloses a carton sealing machine mechanism. A tape reel is mounted on the upper end of a clamping plate, and a guide pulley is positioned between the clamping plates. A front support, a blade holder, and a rear support are sequentially and movably connected between the clamping plates via a rotating shaft. A linkage rod is horizontally positioned, with its front end movably connected to the front support above the rotating shaft, its middle end movably connected to the blade holder above the rotating shaft, and its rear end movably connected to the rear support below the rotating shaft. The blade is positioned at the lower end of the blade holder, with a front pressure roller at the lower end of the front support and a rear pressure roller at the lower end of the rear support. One end of a first spring is fixed between the clamping plates, and the other end is connected to the top of the blade holder. One end of a second spring is fixed between the clamping plates, and the other end is connected to the top of the rear support.
[0004] In the sealing machine mechanism provided by this patent, the swing stroke of the front pressure roller, the rear pressure roller, and the blade is entirely dependent on the spring force constraint, which is prone to problems such as excessive rebound and excessive swing amplitude leading to insufficient accuracy. Utility Model Content
[0005] The purpose of this utility model is to address the aforementioned problems in the existing technology by providing a core component for a corrugated carton sealing machine.
[0006] The objective of this utility model can be achieved through the following technical solution: A core assembly for a corrugated carton sealing machine, comprising a side plate assembly, a front wheel assembly, a rear wheel assembly, a blade assembly, and a connecting rod assembly. The side plate assembly includes a left side plate, a right side plate, and a side plate fixing frame. The side plate fixing frame is sleeved and connected to the outer periphery of the left and right side plates. A plurality of side plate fixing shafts are fixed between the left and right side plates. The front wheel assembly includes a first front wheel axle, a second front wheel axle, a third front wheel axle, a front wheel side plate, and a front roller. The first front wheel axle is fixedly installed between the left and right side plates. First bushings are sleeved and connected to both ends of the first front wheel axle. The front wheel side plate is sleeved and connected to the outside of the first bushings. The front roller is connected to the lower end of the front wheel side plate. The second and third front wheel axles are installed between the front wheel side plates. Second bushings are connected to both ends of the second front wheel axle. The connecting rod assembly, which passes through the front wheel side plate, includes two symmetrical connecting rods. One end of the connecting rod assembly is attached to and fixed to the outer side of the second bushing. The rear wheel assembly includes a first rear wheel axle, a second rear wheel axle, a rear wheel side plate, and a rear roller. The first rear wheel axle passes through and connects to the rear wheel side plate and the connecting rod assembly in sequence. The second rear wheel passes through and connects to the rear wheel side plate, the left side plate, and the right side plate in sequence. The rear roller is connected to the lower end of the rear wheel side plate. The blade assembly includes a blade holder positioning shaft, a blade holder side plate, a blade fixing plate, and a cutting blade. The blade holder positioning shaft is installed between the left side plate and the right side plate. The blade holder side plate is connected to the blade holder positioning shaft. The other end of the blade holder side plate is fixedly connected to the blade holder fixing shaft. The blade holder side plate has a mounting hole. The blade fixing plate is connected to the mounting hole. The cutting blade is installed in the blade fixing plate and extends out of the blade fixing plate.
[0007] In the aforementioned core assembly for a corrugated carton sealing machine, a left support groove and a right support groove are respectively provided in the left side plate and the right side plate, and a support shaft is fixed between the left support groove and the right support groove.
[0008] In the aforementioned core assembly for a corrugated carton sealing machine, a tape support is fixedly connected to the right side plate, and a tape fixing cylinder is installed at the upper end of the tape support.
[0009] In the aforementioned core assembly for a corrugated carton sealing machine, a straight-lined guide shaft and a rubber roller are fixedly installed in the right side plate.
[0010] In the aforementioned core assembly for a corrugated carton sealing machine, a baffle is fixedly connected between the front wheel side plates, and a pressure plate is fixedly connected to the lower end of the baffle. The lower end of the pressure plate is sleeved on the outside of the second front wheel axle and the pressure plate is in contact with the inner side of the second axle sleeve.
[0011] In the aforementioned core assembly for a corrugated carton sealing machine, an eccentric wheel is installed on the inner side of the connecting rod of the connecting rod assembly, and a guide shaft is connected to the eccentric wheel. One end of the guide shaft is connected to the connecting rod on the other side.
[0012] Compared with the prior art, the core assembly for a corrugated carton sealing machine provided by this utility model has the following beneficial effects: 1. The side plate assembly, through the combination design of the left side plate, right side plate, side plate fixing frame and several side plate fixing shafts, forms a high-strength rigid connection structure, which greatly improves the stability of the overall frame. The support shaft between the left support groove and the right support groove further strengthens the connection strength between the left side plate and the right side plate; 2. The sleeve connection method of the first bushing and second bushing of the front wheel assembly and the rear wheel assembly with the first front wheel axle and the second front wheel axle not only ensures the flexible rotation of the components, but also reduces shaking through the limiting effect of the bushing, thus improving the motion stability; 3. The rear wheel assembly is linked with the front wheel assembly through the linkage assembly, so that the pressure of the front roller and the rear roller can be adjusted in a coordinated manner, which can adapt to corrugated cartons of different thicknesses and ensure that the tape is evenly adhered to the surface of the carton. The rubber roller of the right side plate, utilizing its elastic properties, can further press the tape tightly at the carton seam, enhancing the adhesion effect. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the internal structure of this utility model;
[0015] Figure 3 This is a schematic diagram of the front wheel assembly structure;
[0016] Figure 4 This is a schematic diagram of the rear wheel assembly structure;
[0017] Figure 5 This is a schematic diagram of the blade assembly structure.
[0018] In the diagram: 1. Side panel assembly; 11. Left side panel; 111. Left support groove; 12. Right side panel; 121. Right support groove; 13. Side panel fixing bracket; 14. Side panel fixing shaft; 15. Support shaft; 2. Front wheel assembly; 21. First front wheel axle; 211. First bushing; 22. Second front wheel axle; 221. Second bushing; 23. Third front wheel axle; 24. Front wheel side panel; 25. Front roller; 26. Baffle; 27. Pressure belt 3. Rear wheel assembly; 31. First rear wheel axle; 32. Second rear wheel axle; 33. Rear wheel side plate; 34. Rear roller; 4. Blade assembly; 41. Blade holder positioning shaft; 42. Blade holder side plate; 421. Mounting hole; 43. Blade fixing plate; 44. Cutting blade; 45. Blade holder fixing shaft; 5. Connecting rod assembly; 6. Belt support; 61. Belt fixing cylinder; 7. Straight-lined guide shaft; 8. Rubber roller; 9. Eccentric wheel; 91. Guide shaft. Detailed Implementation
[0019] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0020] like Figures 1 to 5 As shown, this embodiment includes a side plate assembly 1, a front wheel assembly 2, a rear wheel assembly 3, a blade assembly 4, and a connecting rod assembly 5. The side plate assembly 1 includes a left side plate 11, a right side plate 12, and a side plate fixing frame 13. The side plate fixing frame 13 is sleeved and connected to the outer periphery of the left side plate 11 and the right side plate 12 to form an overall frame structure and provide a basis for the connection between the whole of this embodiment and the external connecting parts. Several side plate fixing shafts 14 are fixed between the left side plate 11 and the right side plate 12 to further enhance the connection strength between the two side plates. A left support groove 111 and a right support groove 121 are respectively opened in the left side plate 11 and the right support groove 121. A support shaft 15 is fixed between the left support groove 111 and the right support groove 121. Through the multi-directional support structure design, the rigidity and stability of the overall frame are greatly improved.
[0021] like Figures 1 to 3 As shown, the front wheel assembly 2 includes a first front axle 21, a second front axle 22, a third front axle 23, a front wheel side plate 24, and a front roller 25. The first front axle 21 is fixedly installed between the left side plate 11 and the right side plate 12, serving as a fixed fulcrum for the front wheel assembly 2. First axle sleeves 211 are fitted onto both ends of the first front axle 21. The front wheel side plate 24 is fitted onto the outside of the first axle sleeves 211, allowing the front wheel side plate 24 to rotate flexibly around the first front axle 21. The front roller 25 is connected to the lower end of the front wheel side plate 24 for contact and... The conveyor belt has a second front axle 22 and a third front axle 23 installed between the front wheel side plates 24 to form a stable wheel assembly structure. The two ends of the second front axle 22 are connected to the second bushings 221, which pass through the front wheel side plates 24 to ensure smooth rotation. A baffle 26 is fixedly connected between the front wheel side plates 24. A pressure plate 27 is fixedly connected to the lower end of the baffle 26. The lower end of the pressure plate 27 is sleeved on the outside of the second front axle 22 and the pressure plate 27 is in contact with the inside of the second bushing 221 to achieve effective guidance and pressing of the tape.
[0022] like Figures 1 to 4As shown, the linkage assembly 5 includes two symmetrical linkages. One end of the linkage assembly 5 is attached and fixed to the outer side of the second bushing 221 to achieve linkage with the front wheel assembly 2. The rear wheel assembly 3 includes a first rear wheel axle 31, a second rear wheel axle 32, a rear wheel side plate 33, and a rear roller 34. The first rear wheel axle 31 is sequentially inserted and connected to the rear wheel side plate 33 and the linkage assembly 5. The second rear wheel axle 32 is sequentially inserted and connected to the rear wheel side plate 33, the left side plate 11, and the right side plate 12 to form a stable rear wheel support structure. The rear roller 34 is connected to the lower end of the rear wheel side plate 33 and works in conjunction with the front roller 25 to convey the carton. An eccentric wheel 9 is installed inside the linkage assembly 5. A guide shaft 91 is connected in the eccentric wheel 9. The other end of the guide shaft 91 is connected to the linkage on the other side. The pressure of the front and rear wheels can be adjusted in a coordinated manner by adjusting the eccentric wheel 9.
[0023] like Figures 1 to 5 As shown, the blade assembly 4 includes a blade holder positioning shaft 41, a blade holder side plate 42, a blade fixing plate 43, and a cutter 44. The blade holder positioning shaft 41 is installed between the left side plate 11 and the right side plate 12, serving as the mounting base for the blade assembly. The blade holder side plate 42 is connected to the blade holder positioning shaft 41 and can rotate around the positioning shaft to adjust the angle. The other end of the blade holder side plate 42 is fixedly connected to a blade holder fixing shaft 45 to enhance the stability of the blade holder structure. The blade holder side plate 42 has a mounting hole 421, and the blade fixing plate 43 is connected to the mounting hole 421. The cutter 44 is installed in the blade fixing plate 43 and extends out of the blade fixing plate 43 for precisely cutting the tape.
[0024] To elaborate further, such as Figures 1 to 2 As shown, a tape support 6 is fixedly connected to the right side plate 12. A tape fixing cylinder 61 is installed at the upper end of the tape support 6 for installing the tape roll and achieving smooth unwinding. A straight-line guide shaft 7 and a rubber roller 8 are fixedly installed in the right side plate 12. The straight-line guide shaft 7 is used to guide the direction of the tape, and the rubber roller 8 uses its elastic properties to further press the tape at the carton seam to ensure a firm fit.
[0025] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
[0026] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.
Claims
1. A core assembly for a corrugated carton sealing machine, comprising a side plate assembly (1), a front wheel assembly (2), a rear wheel assembly (3), a blade assembly (4), and a connecting rod assembly (5), characterized in that: The side panel assembly (1) includes a left side panel (11), a right side panel (12), and a side panel fixing bracket (13). The side panel fixing bracket (13) is sleeved and connected to the outer periphery of the left side panel (11) and the right side panel (12). A plurality of side panel fixing shafts (14) are fixed between the left side panel (11) and the right side panel (12). The front wheel assembly (2) includes a first front wheel axle (21), a second front wheel axle (22), a third front wheel axle (23), a front wheel side panel (24), and a front roller (25). The first front wheel axle (21) is fixedly installed on the left side panel (11) and the right side panel (12). 2) Between the two ends of the first front wheel axle (21), a first bushing (211) is sleeved and connected, the front wheel side plate (24) is sleeved and connected to the outside of the first bushing (211), the front roller (25) is connected to the lower end of the front wheel side plate (24), the second front wheel axle (22) and the third front wheel axle (23) are installed between the front wheel side plates (24), the two ends of the second front wheel axle (22) are connected to the second bushing (221) and the second bushing (221) passes through the front wheel side plate (24), the linkage assembly (5) includes two symmetrical linkages, the linkage assembly One end of component (5) is attached to and fixed to the outer side of the second bushing (221). The rear wheel assembly (3) includes a first rear wheel axle (31), a second rear wheel axle (32), a rear wheel side plate (33), and a rear roller (34). The first rear wheel axle (31) passes through and is connected to the rear wheel side plate (33) and the connecting rod assembly (5) in sequence. The second rear wheel passes through and is connected to the rear wheel side plate (33), the left side plate (11), and the right side plate (12) in sequence. The rear roller (34) is connected to the lower end of the rear wheel side plate (33). The blade assembly (4) includes a blade holder positioning shaft (41). The tool holder includes a side plate (42), a blade fixing plate (43), and a cutter (44). The tool holder positioning shaft (41) is installed between the left side plate (11) and the right side plate (12). The tool holder side plate (42) is connected to the tool holder positioning shaft (41). The other end of the tool holder side plate (42) is fixedly connected to the tool holder fixing shaft (45). The tool holder side plate (42) has an installation hole (421). The blade fixing plate (43) is connected to the installation hole (421). The cutter (44) is installed in the blade fixing plate (43) and extends out of the blade fixing plate (43).
2. The core assembly for a corrugated carton sealing machine according to claim 1, characterized in that: The left side plate (11) and the right side plate (12) are respectively provided with a left support groove (111) and a right support groove (121), and a support shaft (15) is fixed between the left support groove (111) and the right support groove (121).
3. The core assembly for a corrugated carton sealing machine according to claim 1, characterized in that: A tape support column (6) is fixedly connected to the right side plate (12), and a tape fixing cylinder (61) is installed at the upper end of the tape support column (6).
4. The core assembly for a corrugated carton sealing machine according to claim 1, characterized in that: A straight-lined guide shaft (7) and a rubber roller (8) are fixedly installed in the right side plate (12).
5. The core assembly for a corrugated carton sealing machine according to claim 1, characterized in that: A baffle (26) is fixedly connected between the front wheel side plates (24), and a pressure plate (27) is fixedly connected to the lower end of the baffle (26). The lower end of the pressure plate (27) is sleeved on the outside of the second front wheel axle (22) and the pressure plate (27) is in contact with the inside of the second bushing (221).
6. The core assembly for a corrugated carton sealing machine according to claim 1, characterized in that: An eccentric wheel (9) is installed on the inner side of the connecting rod of the connecting rod assembly (5). A guide shaft (91) is connected in the eccentric wheel (9). One end of the guide shaft (91) is connected to the connecting rod on the other side.