Carton tightening mechanism of double-piece carton nailing machine

Abstract

The utility model discloses a carton tightening mechanism of a double-piece carton nailing machine, which comprises a machine base, the top of the machine base is fixedly connected with a frame body, the lower end in the frame body is provided with a transverse plate, the center of the top of the frame body is fixedly provided with a carton nailing mechanism, and the opposite sides in the transverse plate are fixedly provided with motors; and screw rods are arranged on the opposite sides of the two motors, air cylinders are fixedly installed at the positions, close to the two sides, of the top of the frame body, threaded blocks are in threaded connection with the positions, close to one sides, of the surfaces of the screw rods, and connecting cylinders are fixedly connected to the centers of the bottoms of the two threaded blocks. According to the carton tightening mechanism of the double-piece carton nailing machine, through the design of the transverse plate, the motor, the screw rod, the threaded block, the connecting cylinder, the spring, the telescopic rod, the roller frame and the pressing plate rollers, the motor drives the screw rod to rotate and drives the threaded block to horizontally move in the transverse plate, so that the distance between the two pressing plate rollers is adjusted to adapt to the width of a carton, and the function of efficiently tightening cartons of different sizes is achieved.

Description

Technical Field

[0001] This utility model relates to the field of carton tightening technology for carton stapling machines, specifically a carton tightening mechanism for double-plate carton stapling machines. Background Technology

[0002] A double-piece stapling machine is a mechanical device specifically designed for sealing cartons. It is mainly designed for the binding needs of large or irregularly shaped cartons. During the stapling process of a double-piece stapling machine, the seams of the cartons, especially the edges of the stapling parts, are prone to curling up, thus requiring the cartons to be tightened.

[0003] The existing carton tightening mechanism of double-piece stapling machines is rudimentary in design and severely lacks adjustment functionality. When faced with cartons of different sizes, this mechanism cannot dynamically adjust the tightening range, resulting in large areas of warping due to insufficient tightening. This leads to edges not fitting properly during stapling, severely impacting product quality. When operators change carton sizes, they must manually adjust the fixed points and stroke parameters of the tightening components, but this process is cumbersome and lacks precision, requiring repeated testing to achieve barely usable results, significantly reducing production efficiency. Therefore, we propose a new carton tightening mechanism for double-piece stapling machines. Utility Model Content

[0004] The purpose of this invention is to provide a carton tightening mechanism for a double-piece stapling machine, addressing the shortcomings of existing carton tightening mechanisms in the background section. These existing mechanisms are rudimentary in design and severely lack adjustment functionality. When dealing with cartons of different sizes, the mechanism cannot dynamically adjust the tightening range, resulting in large areas of warping due to insufficient tightening. This prevents the edges from fitting properly during stapling, severely impacting product quality. Furthermore, when operators change carton specifications, they must manually adjust the fixed points and stroke parameters of the tightening components, a cumbersome and inaccurate process requiring repeated testing to achieve even basic usability, leading to a significant reduction in production efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a carton tightening mechanism for a double-piece nailing machine, comprising a base, a frame fixedly connected to the top of the base, a horizontal plate provided at the lower end of the frame, a nailing mechanism fixedly installed at the center of the top of the frame, motors fixedly installed on opposite sides of the horizontal plate, screws provided on opposite sides of the two motors, cylinders fixedly installed on both sides of the top of the frame, threaded blocks threadedly connected to one side of the surface of the screws, connecting cylinders fixedly connected to the center of the bottom of the two threaded blocks, springs fixedly connected to the top of the connecting cylinders, telescopic rods fixedly connected to the lower end of the springs, roller frames provided on both sides of the lower end of the horizontal plate, and pressure rollers movably connected to the lower ends of the two roller frames.

[0006] Compared with the prior art, the beneficial effects of this utility model are:

[0007] This double-plate carton fastening machine's carton tightening mechanism, through the design of a horizontal plate, motor, screw, threaded block, connecting cylinder, spring, telescopic rod, roller frame, and pressure roller, uses a motor-driven screw rotation to move the threaded block horizontally within the horizontal plate, thereby adjusting the distance between the two pressure rollers to adapt to the carton width. This achieves efficient tightening of cartons of different sizes. The combination of springs and telescopic rods provides vertical buffering capability when the pressure rollers contact the carton, effectively flattening any warped areas while preventing damage to the carton surface due to excessive pressure. The rotating connection between the roller frame and the pressure rollers ensures the carton remains stable during transport, reducing fastening deviations, improving work efficiency, and meeting market demands. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model;

[0009] Figure 2 This is a front view of the structure of this utility model;

[0010] Figure 3 This is a three-dimensional structural view of the threaded block, connecting cylinder, and pressure plate roller of this utility model;

[0011] Figure 4 This is the main view of the structure of this utility model.

[0012] In the diagram: 1. Machine base; 2. Frame; 3. Horizontal plate; 4. Groove; 5. Nailing mechanism; 6. Motor; 7. Screw; 8. Guide block No. 1; 9. Guide groove No. 1; 10. Cylinder; 11. Threaded block; 12. Guide block No. 2; 13. Guide groove No. 2; 14. Connecting cylinder; 15. Rectangular groove; 16. Spring; 17. Telescopic rod; 18. Guide block No. 3; 19. Guide groove No. 3; 20. Roller frame; 21. Pressure roller. Detailed Implementation

[0013] 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.

[0014] Please see Figures 1-4This utility model provides a technical solution: a carton tightening mechanism for a double-piece carton stapling machine, including a base 1, a frame 2 fixedly connected to the top of the base 1, a horizontal plate 3 provided at the lower end of the frame 2, a carton stapling mechanism 5 fixedly installed at the center of the top of the frame 2, motors 6 fixedly installed on opposite sides of the horizontal plate 3, screws 7 provided on opposite sides of the two motors 6, cylinders 10 fixedly installed on both sides of the top of the frame 2, threaded blocks 11 threadedly connected to one side of the surface of the screws 7, connecting cylinders 14 fixedly connected to the center of the bottom of the two threaded blocks 11, springs 16 fixedly connected to the top of the connecting cylinders 14, telescopic rods 17 fixedly connected to the lower end of the springs 16, roller frames 20 provided on both sides of the lower end of the horizontal plate 3, and pressure rollers 21 movably connected to the lower ends of the two roller frames 20.

[0015] A groove 4 is provided at the center of the top of the horizontal plate 3. The lower end of the nailing mechanism 5 extends through the outside of the groove 4. The design of the groove 4 provides vertical installation space for the nailing mechanism 5, ensuring that its lower end can accurately penetrate under the horizontal plate 3 and directly act on the surface of the carton to complete the nailing operation.

[0016] The motor 6 is fixedly connected to a main shaft via its output end on one side. One side of the main shaft is fixedly connected to one end of a screw 7. The opposite ends of the two screws 7 are movably connected to bearings fixedly installed at the center of both sides of the horizontal plate 3. The motor 6 drives the screws 7 to rotate via the main shaft, transmitting power to the threaded block 11 to achieve linear motion in the horizontal direction. The installation of the bearings ensures the smooth rotation of the screws 7, reduces frictional loss, and extends the service life of the equipment. This transmission structure provides the core power for the width adjustment of the carton tightening mechanism, ensuring the stability and accuracy of the adjustment process.

[0017] A guide groove 9 is provided on the top of both sides of the frame 2. A guide block 8 is fixedly connected to the center of both sides of the horizontal plate 3. The opposite sides of the two guide blocks 8 extend into the interior of the two guide grooves 9 and slide to connect with the inner wall of the guide grooves 9. A piston rod is fixedly connected to the output end of the cylinder 10 at its bottom. The lower ends of the two piston rods extend to the outside of the frame 2 and are fixedly connected to the top sides of the horizontal plate 3 respectively. The cooperation of the guide grooves 9 and the guide blocks 8 provides the horizontal plate 3 with a vertical guiding function, ensuring that it rises and falls smoothly under the drive of the cylinder 10. The cylinder 10 acts directly on the horizontal plate 3 through the piston rod, realizing the adaptive adjustment of cartons of different thicknesses. This structure enhances the flexibility and versatility of the equipment and significantly improves production efficiency.

[0018] Two guide blocks 12 are fixedly connected to the center of the top of each of the two threaded blocks 11. Two guide grooves 13 are opened on both sides of the top of the horizontal plate 3. The top of the two guide blocks 12 extends into the interior of the two guide grooves 13 and slides in connection with the inner wall of the guide grooves 13. The cooperation between the guide grooves 13 and the guide blocks 12 provides a horizontal guiding function for the threaded blocks 11, ensuring that they move in a straight line under the drive of the screw 7. This structure effectively prevents the threaded blocks 11 from rotating or deviating, ensuring the accuracy of the spacing adjustment of the pressure rollers 21, thereby improving the quality and stability of the carton tightening.

[0019] Rectangular slots 15 are provided on both sides of the bottom of the horizontal plate 3. The lower ends of the two connecting cylinders 14 extend through the outside of the two rectangular slots 15 respectively. The bottoms of the two telescopic rods 17 extend through the outside of the two connecting cylinders 14 respectively and are fixedly connected to the center of the top of the two roller frames 20 respectively. The rectangular slots 15 provide a vertical installation channel for the connecting cylinders 14, ensuring that their lower ends can extend directly to the bottom of the horizontal plate 3 and connect with the roller frame 20. This structure simplifies the equipment assembly process and provides space for the vertical movement of the pressure roller 21, ensuring that it can automatically adjust its height according to the thickness of the carton, thereby improving the adaptability and stability of the equipment.

[0020] The bottom of both sides of the connecting cylinder 14 is provided with a No. 3 guide groove 19. The top of both sides of the telescopic rod 17 is fixedly connected with a No. 3 guide block 18. The opposite sides of the two No. 3 guide blocks 18 extend into the interior of the two No. 3 guide grooves 19 and slide to connect with the inner wall of the No. 3 guide grooves 19 and No. 3 guide blocks 18 to provide a vertical guiding function for the telescopic rod 17, ensuring that it extends and retracts smoothly under the action of the spring 16. This structure realizes the elastic pressing function of the pressure roller 21, which can effectively flatten the warped area of ​​the carton and avoid damage to the surface of the carton due to excessive pressure, significantly improving the quality and safety of carton tightening.

[0021] After the equipment is started, when it is necessary to adjust the spacing of the pressure rollers 21 to adapt to cartons of different widths, the motors 6 on both sides of the horizontal plate 3 work synchronously, driving the screw 7 to rotate through the main shaft. Since the screw 7 is threadedly connected to the threaded block 11, and the threaded block 11 slides with the second guide groove 13 at the top of the horizontal plate 3 through the second guide block 12, the threaded block 11 moves linearly in the horizontal direction when the screw 7 rotates, thereby driving the connecting cylinder 14, telescopic rod 17, roller frame 20 and pressure rollers 21 to move horizontally as a whole, realizing the precise adjustment of the spacing of the pressure rollers 21. When the thickness of the carton changes, the cylinder 10 at the top of the frame 2 drives the horizontal plate 3 to move vertically up and down along the first guide groove 9 through the piston rod. The cooperation between the first guide block 8 and the first guide groove 9 ensures the smooth movement of the horizontal plate 3, thereby adjusting the pressure roller spacing. The vertical position of the plate roller 21 is adapted to the thickness of the carton. During the flattening process, when the plate roller 21 contacts the surface of the carton, the telescopic rod 17 extends and retracts vertically along the third guide groove 19 under the action of the spring 16. The cooperation between the third guide block 18 and the third guide groove 19 ensures the smooth movement of the telescopic rod 17, giving the plate roller 21 an elastic pressing function. This effectively flattens the warped area of ​​the carton and avoids damage to the carton surface due to excessive pressure. At the same time, the lower end of the nailing mechanism 5 passes through the groove 4 at the top of the horizontal plate 3. When the carton is flattened and transported to the nailing position, the nailing mechanism 5 directly acts on the surface of the carton to complete the nailing operation. Through the coordinated work of the above structures, the mechanism achieves efficient tightening and nailing of cartons of different sizes, significantly improving production efficiency and product quality.

[0022] In summary, the carton tightening mechanism of this double-plate stapling machine, through the design of the horizontal plate 3, motor 6, screw 7, threaded block 11, connecting cylinder 14, spring 16, telescopic rod 17, roller frame 20, and pressure roller 21, allows the motor 6 to drive the screw 7 to rotate, which in turn moves the threaded block 11 horizontally within the horizontal plate 3, thereby adjusting the distance between the two pressure rollers 21 to adapt to the width of the carton. This achieves efficient tightening of cartons of different sizes. The combination of spring 16 and telescopic rod 17 provides the pressure roller 21 with vertical buffering capacity when contacting the carton, effectively flattening the warped areas of the carton while preventing damage to the carton surface due to excessive pressure. The rotating connection between the roller frame 20 and the pressure roller 21 ensures that the carton remains stable during transport, reduces stapling deviation, improves work efficiency, and meets market demands.

[0023] 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.

[0024] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A carton tightening mechanism for a double-piece stapling machine, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a frame (2). A horizontal plate (3) is provided at the lower end of the frame (2). A nail box mechanism (5) is fixedly installed at the center of the top of the frame (2). Motors (6) are fixedly installed on opposite sides of the horizontal plate (3). Screws (7) are provided on opposite sides of the two motors (6). Cylinders (10) are fixedly installed on both sides of the top of the frame (2). A threaded block (11) is threadedly connected to one side of the surface of the screw (7). A connecting cylinder (14) is fixedly connected to the center of the bottom of the two threaded blocks (11). A spring (16) is fixedly connected to the top of the connecting cylinder (14). A telescopic rod (17) is fixedly connected to the lower end of the spring (16). Roller frames (20) are provided on both sides of the lower end of the horizontal plate (3). A pressure roller (21) is movably connected to the lower end of the two roller frames (20).

2. The carton tightening mechanism for a double-piece stapling machine according to claim 1, characterized in that: A groove (4) is provided at the center of the top of the horizontal plate (3), and the lower end of the nailing mechanism (5) extends through the outside of the groove (4).

3. The carton tightening mechanism for a double-piece stapling machine according to claim 1, characterized in that: The motor (6) is fixedly connected to a main shaft through its output end on one side. One side of the main shaft is fixedly connected to one end of a screw (7). The opposite ends of the two screws (7) are respectively movably connected to bearings fixedly installed at the center of both sides of the horizontal plate (3).

4. The carton tightening mechanism for a double-piece stapling machine according to claim 1, characterized in that: The top of both sides of the frame (2) is provided with a guide groove (9). The center of both sides of the horizontal plate (3) is fixedly connected with a guide block (8). The opposite sides of the two guide blocks (8) extend into the interior of the two guide grooves (9) and slide to the inner wall of the guide grooves (9). The cylinder (10) is fixedly connected to a piston rod through its bottom output end. The lower ends of the two piston rods penetrate to the outside of the frame (2) and are fixedly connected to the top of the horizontal plate (3) on both sides respectively.

5. The carton tightening mechanism for a double-piece stapling machine according to claim 1, characterized in that: The center of the top of each of the two threaded blocks (11) is fixedly connected to a second guide block (12). The top of the horizontal plate (3) is provided with two guide grooves (13) on both sides. The top of the two guide blocks (12) extends into the interior of the two guide grooves (13) and slides in connection with the inner wall of the guide grooves (13).

6. The carton tightening mechanism for a double-piece stapling machine according to claim 1, characterized in that: The bottom of the horizontal plate (3) is provided with rectangular grooves (15) on both sides. The lower ends of the two connecting cylinders (14) pass through the outside of the two rectangular grooves (15) respectively. The bottoms of the two telescopic rods (17) pass through the outside of the two connecting cylinders (14) respectively and are fixedly connected to the center of the top of the two roller frames (20) respectively.

7. The carton tightening mechanism for a double-piece stapling machine according to claim 1, characterized in that: The bottom of both sides of the connecting cylinder (14) is provided with a No. 3 guide groove (19), and the top of both sides of the telescopic rod (17) is fixedly connected with a No. 3 guide block (18). The opposite sides of the two No. 3 guide blocks (18) extend into the interior of the two No. 3 guide grooves (19) and slide to connect with the inner wall of the No. 3 guide grooves (19).

Images