A paper feeding auxiliary limiting structure of a box nailing machine

Abstract

This utility model provides an auxiliary limiting structure for paper feeding in a carton stapling machine, belonging to the technical field of carton production equipment. The auxiliary limiting structure includes a fixed frame, within which a conveying device and a placement plate are installed. A fixed plate and a fixed bracket are fixedly installed on the upper side of the fixed frame. Screws and limiting rods are installed on the inner walls of both sides of the fixed frame. Nuts are threaded onto the circumferential surface of the screws, and limiting blocks are slidably installed on the circumferential surface of the limiting rods. Nuts and limiting blocks are fixedly installed together, and a fixed seat is fixedly installed on the upper side of the limiting blocks. This significantly improves the automation level and operational efficiency of the paper feeding process. Furthermore, it can continuously and gently push and limit the sides of the carton during conveying, effectively correcting any deviation or tilting of the carton during transport, ensuring it enters the subsequent stapling station in the correct posture, thereby greatly improving the accuracy of the stapling position and the consistency of product quality.

Description

Technical Field

[0001] This utility model belongs to the technical field of carton production equipment, specifically relating to an auxiliary limiting structure for paper feeding in a carton stapling machine. Background Technology

[0002] The stapling machine is one of the key pieces of equipment in carton processing. In the automatic stapling and forming process of carton, it is necessary to accurately feed single cardboard sheets or pre-formed carton sheets into the stapling station.

[0003] A search of Chinese patents revealed a patent with publication number CN219427563U, which describes an auxiliary limiting structure for paper feeding in a carton stapler. The structure comprises a frame, on which a feeding structure, a conveying structure, and a limiting structure are mounted. The feeding structure includes a set of opposing left and right fixed plates, with stacked cartons placed between them. A telescopic suction cup is located below each carton and fixed to the frame. The conveying structure includes a pulley conveying structure, with its left side located below the carton. The limiting structure includes a set of opposing front and rear limiting plates, with the front limiting plate fixed to the frame and the rear limiting plate slidingly connected to the frame in a front-to-back direction. This invention provides a feeding structure for feeding stacked cartons one by one onto the conveying structure, improving feeding efficiency. The limiting structure then limits the cartons during conveying, preventing deviation and facilitating subsequent stapler operations.

[0004] In existing technologies, when using a conveyor belt for automatic paper feeding, cartons are prone to lateral shift or angular tilting during transport due to inertia, uneven friction, or initial placement deviations. This can result in the cartons arriving at the nailing station in an incorrect position, leading to misaligned or insecure nailing, which in turn affects the quality of subsequent nailing.

[0005] Therefore, the paper feeding process of existing box-stitching machines suffers from low automation, poor positioning accuracy, and insufficient stability, making it difficult to meet the demands for high-efficiency and high-quality production. Utility Model Content The purpose of this utility model is to provide an auxiliary limiting structure for paper feeding in a carton stapler, which aims to solve the problems of low automation of carton feeding, easy deviation and tilting during the conveying process, resulting in unstable carton stapler quality and low efficiency in the existing technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A paper feeding auxiliary limiting structure for a carton stapler includes a fixed frame. A conveying device and a placement plate are disposed within the fixed frame. A fixed plate and a fixed bracket are fixedly installed on the upper side of the fixed frame. Lead screws and limiting rods are provided on the inner walls of both sides of the fixed frame. Nuts are threaded onto the circumferential surface of the lead screws. Limiting blocks are slidably installed on the circumferential surface of the limiting rods. Nuts and limiting blocks are fixedly installed together. A fixed seat is fixedly installed on the upper side of the limiting block. A clamping mechanism is provided on the upper side of the fixed seat. The clamping mechanism clamps the carton placed between the fixed plate and the fixed bracket, achieving positional movement.

[0007] In a preferred embodiment of this utility model, the clamping mechanism includes a telescopic rod fixedly installed on the upper side of the fixed base. One side of the telescopic rod movably penetrates the surface of the fixed base, and a sliding block is fixedly installed on one side of the telescopic rod. The surface of the fixed base is rotatably connected to two clamping arms via a rotating shaft. A clamping seat is fixedly installed on one side of each of the two clamping arms. Two adjusting plates are rotatably connected between the sliding block and the two clamping arms via a rotating shaft.

[0008] In a preferred embodiment of this utility model, a limiting groove is provided on the upper side of the fixed base, and a limiting plate is slidably connected to the inner surface of the limiting groove. The upper side of the limiting plate and the lower side of the sliding block are fixedly installed together.

[0009] In a preferred embodiment of this utility model, a mounting bracket is fixedly installed on one side of the fixed frame, a motor is fixedly installed on one side of the mounting bracket and movably passes through the outer surface of the mounting bracket, and a transmission rod movably passes through the inner surface of the fixed frame.

[0010] As a preferred embodiment of this utility model, a double-groove I-beam wheel is fixedly installed at the output end of the motor, and a first single-groove I-beam wheel is fixedly installed on one side of both the lead screw and the transmission rod and is connected by a belt for rotation.

[0011] As a preferred embodiment of this utility model, a mounting base is fixedly installed on one side of the fixed frame, and a rotating seat is provided inside the mounting base and movably passes through the outer surface of the mounting base. A second single-groove I-beam wheel is fixedly installed on one side of both the rotating seat and the transmission rod and is rotatably connected by a belt.

[0012] As a preferred embodiment of this utility model, a limiting frame is fixedly installed on one inner wall of the mounting base, a sliding frame is slidably installed on the inner surface of the rotating base, a top rod is fixedly installed on one side of the sliding frame and movably passes through the outer surface of its limiting frame, and a push plate is fixedly installed on one side of the limiting frame.

[0013] In a preferred embodiment of this utility model, a sliding shell is fixedly installed on one side of the push plate, a spring is provided on the inner surface of the sliding shell, and a sliding rod is fixedly installed on the inner wall of one side of the mounting base, with the sliding rod and the sliding shell being slidably installed together.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. In this solution, the double-groove I-beam pulley and the first single-groove I-beam pulley are connected by a belt, driving the lead screw to rotate. The nut moves accordingly, causing the fixed seat and clamping mechanism connected to it via the limit block to slide laterally as a whole, moving the carton above the conveying device. Then, by controlling the extension rod to retract, the sliding block and the adjusting plate drive the two clamping arms to rotate in opposite directions, so that the clamping seat clamps the single carton at the front end. This significantly improves the automation level and work efficiency of the paper feeding process. Moreover, it can continuously and gently push and limit the sides of the carton during the carton conveying process, effectively correcting the offset and tilt of the carton during conveying, ensuring that it enters the subsequent nailing station in the correct posture, thereby greatly improving the accuracy of the nailing position and the consistency of product quality.

[0015] 2. In this solution, the sliding frame is driven to reciprocate by the wave-shaped groove inside the rotating seat, which drives the top rod to push the push plate. The push plate moves smoothly back and forth along the sliding rod through the sliding shell, and periodically corrects and limits the side of the carton during transportation. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a perspective view of the present utility model; Figure 2 This is a first perspective sectional view of the present invention; Figure 3 This is a second perspective sectional view of the present invention; Figure 4 This utility model Figure 3 Enlarged view of section A in the image; Figure 5 This is a third perspective sectional view of the present invention; Figure 6 This utility model Figure 5 A partial view of point B in the image.

[0017] In the diagram: 1. Fixed frame; 2. Conveying device; 3. Fixed plate; 4. Fixed bracket; 5. Mounting bracket; 6. Placement plate; 7. Lead screw; 8. Nut; 9. Limiting rod; 10. Limiting block; 11. Fixed seat; 12. Telescopic rod; 13. Sliding block; 14. Clamping arm; 15. Clamping seat; 16. Adjusting plate; 17. Limiting groove; 18. Limiting plate; 19. Motor; 20. Double-groove I-beam wheel; 21. First single-groove I-beam wheel; 22. Transmission rod; 23. Second single-groove I-beam wheel; 24. Mounting seat; 25. Rotating seat; 26. Sliding frame; 27. Top rod; 28. Limiting frame; 29. ​​Push plate; 30. Sliding shell; 31. Sliding rod; 32. Spring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1 Please see Figures 1-6 The present invention provides the following technical solution: A paper feeding auxiliary limiting structure for a carton stapler includes a fixed frame 1, a conveying device 2 and a placement plate 6 inside the fixed frame 1, a fixed plate 3 and a fixed frame 4 fixedly installed on the upper side of the fixed frame 1, a lead screw 7 and a limiting rod 9 on both inner walls of the fixed frame 1, a nut 8 threaded onto the circumferential surface of the lead screw 7, a limiting block 10 slidably installed on the circumferential surface of the limiting rod 9, a fixed installation between the nut 8 and the limiting block 10, a fixed seat 11 fixedly installed on the upper side of the limiting block 10, and a clamping mechanism provided on the upper side of the fixed seat 11. The clamping mechanism clamps the carton placed between the fixed plate 3 and the fixed frame 4 to achieve the function of position movement.

[0020] In a specific embodiment of this utility model, the fixed frame 1 serves as the main support structure of the entire device, used to install and support all other functional components. The conveying device 2 transports the cartons that have completed the limiting and posture adjustment along a predetermined direction to the next process. According to the placement plate 6 located on the side of the conveying device 2, it provides an initial placement and temporary storage platform for the stack of cartons to be processed.

[0021] By cooperating with the fixing plate 3 and the fixing frame 4, the cardboard stack placed between the two is vertically positioned and limited from one side to prevent the cardboard stack from tipping over or shifting excessively. The fixing frame 4 is set opposite to the fixing plate 3, and its function is to vertically position and limit the cardboard stack from the other side, together with the fixing plate 3, to determine the storage position of the cardboard stack.

[0022] When the lead screw 7 rotates, it converts the rotational drive of the motor 19 into the linear motion of the nut 8 along its axis. At the same time, the nut 8 moves along the axial direction of the lead screw 7 as the lead screw 7 rotates, and drives the limit block 10 fixed thereto to move synchronously.

[0023] The limiting rod 9 is arranged parallel to the lead screw 7. Its function is to provide guidance for the sliding of the limiting block 10, ensuring that its movement trajectory is straight and preventing it from rotating with the nut 8. At the same time, the limiting block 10 is fixedly installed with the nut 8, thereby transmitting the linear movement of the nut 8 to the fixed seat 11. The guiding effect of the limiting rod 9 is used to ensure the movement accuracy. The fixed seat 11 serves as the mounting base for the clamping mechanism, connecting the clamping mechanism with the driving and guiding mechanisms below.

[0024] The piston rod of the telescopic rod 12 moves through the fixed base 11 and serves as the power source for the clamping mechanism. Its telescopic movement drives the sliding block 13 to move, thereby controlling the opening and closing of the clamping arm 14. The linear thrust or pull of the telescopic rod 12 is transmitted to the adjusting plate 16 that is hinged to it according to the sliding block 13. Two clamping arms 14 are installed in conjunction with a rotating shaft and a fixed base 11. They also serve as the actuators for clamping actions, rotating around the rotating shaft to move the end clamping base 15 closer to or further away. Depending on the components of the carton that the two clamping bases 15 directly contact and clamp, their shape or material is designed to increase friction or protect the surface of the carton. At the same time, two adjusting plates 16 convert the horizontal linear motion of the sliding block 13 into the symmetrical rotational motion of the two clamping arms 14, forming a linkage force amplification or motion conversion mechanism.

[0025] This device significantly improves the automation level and operational efficiency of the paper feeding process. It can also continuously and gently push and limit the sides of the cartons during transport, effectively correcting any deviations or tilts that occur during transport and ensuring the cartons enter the subsequent nailing station in the correct posture. This greatly improves the accuracy of the nailing position and the consistency of product quality. It should be noted that the specific model of the conveyor device 2 and telescopic rod 12 used is to be selected by those skilled in the art. Furthermore, the conveyor device 2 and telescopic rod 12 mentioned above are all existing technologies and will not be elaborated upon in this solution.

[0026] Please refer to the details. Figure 4 A limiting groove 17 is provided on the upper side of the fixed base 11, and a limiting plate 18 is slidably connected to the inner surface of the limiting groove 17. The upper side of the limiting plate 18 and the lower side of the sliding block 13 are fixedly installed.

[0027] In this embodiment: the limiting groove 17 provides a precise sliding track for the limiting plate 18, constraining its movement direction. At the same time, the limiting plate 18 is fixed to the sliding block 13, thereby guiding and limiting the movement trajectory of the sliding block 13, preventing it from deflecting or getting stuck when subjected to force, and improving the stability of the clamping action.

[0028] Please refer to the details. Figure 1 and Figure 5 A mounting bracket 5 is fixedly installed on one side of the fixed frame 1. A motor 19 is fixedly installed on one side of the mounting bracket 5 and moves through the outer surface of the mounting bracket 5. A transmission rod 22 moves through the inner surface of the fixed frame 1.

[0029] In this embodiment: the motor 19 is supported and fixed by the fixed mounting bracket 5. The output end of the motor 19 moves through the mounting bracket 5 to provide the original rotational power for the drive system of the entire device. At the same time, the transmission rod 22 installed by the motor 19 transmits part of the power of the motor 19 to the other side of the device and subsequent mechanisms. It should be noted that the specific model of motor 19 used can be selected by those skilled in the art. The above-mentioned motor 19 and other related information are all existing technologies and will not be elaborated in this solution.

[0030] Please refer to the details. Figure 5 The output end of the motor 19 is fixedly equipped with a double-groove I-beam wheel 20, and the lead screw 7 and the transmission rod 22 are both fixedly equipped with a first single-groove I-beam wheel 21 on one side and are connected by a belt.

[0031] In this embodiment: the double-grooved I-beam pulley 20 serves as a double-grooved belt pulley, transmitting the power of the motor 19 to the transmission system in two directions simultaneously. The two first single-grooved I-beam pulleys 21 are connected to the two grooves of the double-grooved I-beam pulley 20 via belts, receiving the power of the motor 19 and driving the lead screw 7 and transmission rod 22 to rotate.

[0032] Please refer to the details. Figure 6 A mounting base 24 is fixedly installed on one side of the fixed frame 1. A rotating seat 25 is provided inside the mounting base 24 and moves through the outer surface of the mounting base 24. A second single-groove I-beam wheel 23 is fixedly installed on one side of the rotating seat 25 and the transmission rod 22 and is connected by a belt.

[0033] In this embodiment: the mounting base 24 accommodates and installs a series of components for performing the carton pushing action. According to the corresponding wavy arc groove opened on the surface of the rotating base 25, the rotational motion of the transmission rod 22 is transmitted to the internal sliding frame 26, so that the sliding frame 26 slides inside the wavy arc groove of the rotating base 25. According to the internal shape of the wavy arc groove, the sliding frame 26 is driven to slide back and forth. According to the two second single-groove I-beam wheels 23 connected by a belt, the rotational power of the transmission rod 22 is transmitted to the rotating base 25, so that it rotates synchronously.

[0034] Please refer to the details. Figure 6 A limiting frame 28 is fixedly installed on one inner wall of the mounting base 24. A sliding frame 26 is slidably installed on the inner surface of the rotating base 25. A push rod 27 is fixedly installed on one side of the sliding frame 26 and moves through the outer surface of its limiting frame 28. A push plate 29 is fixedly installed on one side of the limiting frame 28.

[0035] In this embodiment: the sliding frame 26 slides relative to the inner surface of the rotating seat 25 under the drive of the sliding frame 26. This sliding converts the rotational motion into linear motion in a specific direction. At the same time, the push rod 27 moves with the sliding frame 26 and directly or indirectly pushes the push plate 29. The limiting frame 28 provides a guide hole for the push rod 27 to pass through, limiting the direction of movement of the push rod 27. The push plate 29 receives the push from the push rod 27 and transmits the force to the sliding shell 30 connected to it, thereby performing the function of adjusting and limiting the position of the conveyed carton, avoiding the carton from tilting during the conveying process, which would affect the subsequent carton nailing process. At the same time, a push plate 29 is also provided on the other side of the fixed frame 1. This push plate 29 is fixed to the surface of the fixed frame 1. At the same time, multiple rollers are provided on the side close to the conveying device 2. When the carton passes by and contacts it, it drives the multiple rollers to rotate, thereby further ensuring the guidance of the carton during the conveying process.

[0036] Please refer to the details. Figure 6 A sliding shell 30 is fixedly installed on one side of the push plate 29. A spring 32 is provided on the inner surface of the sliding shell 30. A sliding rod 31 is fixedly installed on the inner wall of one side of the mounting base 24. The sliding rod 31 and the sliding shell 30 are slidably installed together.

[0037] In this embodiment: the spring 32 is housed in the sliding shell 30 and slides along the sliding rod 31, which converts the pushing action of the push plate 29 into a smooth linear motion. The spring 32 provides buffering or restoring force, which can buffer the impact during the pushing process and help the push plate 29 and the sliding shell 30 return to the initial position after the pushing action ends.

[0038] The working principle and usage process of this utility model are as follows: First, a stack of cardboard boxes is placed vertically on the placement plate 6. The two sides of the cardboard box stack are vertically limited by the fixing plate 3 and the fixing frame 4, respectively. Then, the cardboard box is grasped and retracted by the telescopic rod 12. The sliding block 13 and the adjusting plate 16 drive the two clamping arms 14 to rotate in opposite directions, so that the clamping seat 15 clamps the single cardboard box at the front. At the same time, the motor 19 starts and drives the lead screw 7 to rotate through the double-groove I-beam wheel 20 and the first single-groove I-beam wheel 21 connected by a belt. The nut 8 moves accordingly, driving the fixing seat 11 connected to it through the limiting block 10 and the... The clamping mechanism slides laterally to move the carton above the conveying device 2. Then, the telescopic rod 12 extends, driving the clamping arm 14 to open and release the carton onto the conveying device 2. Subsequently, the motor 19 reverses, driving the clamping mechanism back to its initial position. Finally, the rotation of the transmission rod 22 is transmitted to the rotating seat 25 through the second single-groove I-beam wheel 23. The wavy arc groove in the rotating seat 25 drives the sliding frame 26 to reciprocate, driving the top rod 27 to push the push plate 29. The push plate 29 moves smoothly back and forth along the sliding rod 31 through the sliding shell 30, periodically correcting and limiting the side of the carton during conveying.

[0039] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A paper feeding auxiliary limiting structure for a box-stitching machine, characterized in that: The device includes a fixed frame (1), a conveying device (2) and a placement plate (6) are provided inside the fixed frame (1), a fixed plate (3) and a fixed frame (4) are fixedly installed on the upper side of the fixed frame (1), a lead screw (7) and a limiting rod (9) are provided on the inner walls of both sides of the fixed frame (1), a nut (8) is threaded on the circumferential surface of the lead screw (7), a limiting block (10) is slidably installed on the circumferential surface of the limiting rod (9), the nut (8) and the limiting block (10) are fixedly installed together, a fixed seat (11) is fixedly installed on the upper side of the limiting block (10), and a clamping mechanism is provided on the upper side of the fixed seat (11). The clamping mechanism clamps the carton placed between the fixed plate (3) and the fixed frame (4) to achieve the function of position movement.

2. The paper feeding auxiliary limiting structure for a box-stitching machine according to claim 1, characterized in that: The clamping mechanism includes a telescopic rod (12) fixedly installed on the upper side of the fixed base (11). One side of the telescopic rod (12) movably penetrates the surface of the fixed base (11). A sliding block (13) is fixedly installed on one side of the telescopic rod (12). Two clamping arms (14) are rotatably connected to the surface of the fixed base (11) via a rotating shaft. A clamping seat (15) is fixedly installed on one side of each of the two clamping arms (14). Two adjusting plates (16) are rotatably connected between the sliding block (13) and the two clamping arms (14) via a rotating shaft.

3. The paper feeding auxiliary limiting structure for a box-stitching machine according to claim 2, characterized in that: A limiting groove (17) is provided on the upper side of the fixed seat (11), and a limiting plate (18) is slidably connected to the inner surface of the limiting groove (17). The upper side of the limiting plate (18) and the lower side of the sliding block (13) are fixedly installed.

4. The paper feeding auxiliary limiting structure for a box-stitching machine according to claim 1, characterized in that: A mounting bracket (5) is fixedly installed on one side of the fixed frame (1), and a motor (19) is fixedly installed on one side of the mounting bracket (5) and moves through the outer surface of the mounting bracket (5). A transmission rod (22) moves through the inner surface of the fixed frame (1).

5. The paper feeding auxiliary limiting structure for a box-stitching machine according to claim 4, characterized in that: The output end of the motor (19) is fixedly equipped with a double-groove I-beam wheel (20), and the lead screw (7) and the transmission rod (22) are both fixedly equipped with a first single-groove I-beam wheel (21) on one side and are connected by a belt.

6. The paper feeding auxiliary limiting structure for a box-stitching machine according to claim 4, characterized in that: A mounting base (24) is fixedly installed on one side of the fixed frame (1). A rotating seat (25) is provided inside the mounting base (24) and moves through the outer surface of the mounting base (24). A second single-groove I-beam wheel (23) is fixedly installed on one side of the rotating seat (25) and the transmission rod (22) and is connected by a belt.

7. The paper feeding auxiliary limiting structure for a box-stitching machine according to claim 6, characterized in that: A limiting frame (28) is fixedly installed on one side of the inner wall of the mounting base (24), and a sliding frame (26) is slidably installed on the inner surface of the rotating base (25). A top rod (27) is fixedly installed on one side of the sliding frame (26) and moves through the outer surface of its limiting frame (28). A push plate (29) is fixedly installed on one side of the limiting frame (28).

8. The paper feeding auxiliary limiting structure for a box-stitching machine according to claim 7, characterized in that: A sliding shell (30) is fixedly installed on one side of the push plate (29), and a spring (32) is provided on the inner surface of the sliding shell (30). A sliding rod (31) is fixedly installed on the inner wall of one side of the mounting base (24), and the sliding rod (31) and the sliding shell (30) are slidably installed together.

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