A conveying device for cartons

Abstract

The utility model provides a kind of transmission device for packaging box, including rack, transmission mechanism and drive mechanism;Left base plate and right base plate are equipped on rack, transmission mechanism includes first conveyor belt and second conveyor belt;Drive mechanism includes motor piece and driving shaft;First driving pulley and second driving pulley are equipped on driving shaft, driving shaft can drive first driving pulley and second driving pulley synchronous rotation along the axial direction;Left base plate or right base plate can be relatively close or far away along transverse, driving shaft is configured to allow first driving pulley and second driving pulley follow the conveyor belt belonging to, so when left base plate or right base plate moves, corresponding close to mutual adhesion to form the narrowest transmission channel;It is beneficial to the smooth transmission of narrow packaging box, when both sides conveyor belt adhesion form the narrowest channel, the lateral constraint force of box body increases, it is beneficial to the stable passage of box body through transmission area, reduce the phenomenon of film defect or jamming due to swing.

Description

Technical Field

[0001] This utility model relates to the field of packaging technology, and more specifically, to a conveying device for packaging boxes. Background Technology

[0002] Automated transport and wrapping of packaging boxes is a typical process on packaging production lines, commonly seen in cardboard box packaging. To ensure packaging quality and production line efficiency, production lines typically employ a dual-sided combined transport structure, with a conveyor belt or guide belt on each side, collectively defining a transport channel to guide and stably transport the packaged items. The final stage involves film wrapping, heat sealing, or shrink wrapping.

[0003] In existing technologies, to accommodate packaging boxes of different sizes, the common practice is to configure left and right conveyor belts according to fixed specifications. When changing sizes, manual disassembly or replacement of the transmission structure is required, which greatly restricts the versatility, changeover efficiency, and operational stability of the device. Furthermore, when the left and right conveyor belts are driven by different drive sources or use independent tensioning mechanisms, it is often difficult to ensure that the belt speed and phase on both sides are completely consistent, which can easily lead to lateral displacement, tilting, or unstable clamping of the packaged items, affecting the wrapping quality and yield. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a conveying device for packaging boxes to solve the above problems.

[0005] The present invention adopts the following solution:

[0006] This application provides a conveying device for packaging boxes, including a frame, a conveying mechanism, and a driving mechanism. The frame has a left substrate and a right substrate. The conveying mechanism includes a first conveyor belt correspondingly disposed on the left substrate and a second conveyor belt correspondingly disposed on the right substrate, and a conveying channel for supporting packaging boxes to be wrapped is formed between the first conveyor belt and the second conveyor belt. The driving mechanism includes a motor and a drive shaft that is drively connected to the motor. The drive shaft has a first drive pulley that meshes with the first conveyor belt and a second drive pulley that meshes with the second conveyor belt. The drive shaft can drive the first drive pulley and the second drive pulley to rotate synchronously along the axial direction. The left substrate or the right substrate can move closer or further apart laterally. The drive shaft is configured to allow the first drive pulley and the second drive pulley to follow their respective conveyor belts, so that when the left substrate or the right substrate moves, they move closer together to form the narrowest possible conveying channel.

[0007] As a further improvement, the first drive pulley and the second drive pulley are respectively sleeved on the drive shaft, and each drive pulley can move axially relative to the drive shaft and can rotate synchronously relative to the drive shaft.

[0008] As a further improvement, the drive shaft is splined with the first drive pulley and the second drive pulley. The first drive pulley and the second drive pulley are respectively sleeved on the drive shaft by splines so as to slide relative to the drive shaft along the axial direction and rotate synchronously with the drive shaft by splines.

[0009] As a further improvement, driven pulleys are provided at both ends of the first conveyor belt, and another driven pulley is provided at both ends of the second conveyor belt.

[0010] As a further improvement, the motor component is a servo motor, and the servo motor and the drive shaft are connected by a belt drive.

[0011] As a further improvement, the frame is provided with a corresponding guiding mechanism, which includes at least one set of guide rods that are horizontally inserted between the left substrate and the right substrate, and a guide sleeve that is slidably sleeved on the guide rods, and the guide sleeves are respectively disposed on the left substrate and the right substrate.

[0012] As a further improvement, the left substrate moves relative to the right substrate until its first drive pulley and second drive pulley are in contact with each other, so that the first conveyor belt and the second conveyor belt are exactly in horizontal contact.

[0013] As a further improvement, a limiting mechanism is provided on the rack, which is configured to restrict the left substrate from continuing to move when the left substrate moves away from the right substrate, thereby forming the widest possible transmission channel.

[0014] As a further improvement, the first conveyor belt and the second conveyor belt are respectively constructed to form a transmission line at the front section of the frame, and the rear section of the frame is respectively provided with another transmission line that is connected to the two conveyor belts.

[0015] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0016] 1. The conveying device for packaging boxes in this application can move along the drive shaft axis with the position of the conveyor belt. When the two substrates are close to or far apart, the drive pulley and the conveyor belt can always maintain a meshing state, avoiding pulley disengagement, slippage or deviation caused by relative displacement, thus improving the stability and reliability of the conveying. In particular, the left and right substrates can move laterally, and the drive pulley can follow the movement, which can quickly adjust the width of the conveying channel to the required size, or even get close to the narrowest channel to facilitate the smooth conveying of narrow packaging boxes. This makes it easy to change the shape and has high line change efficiency. Furthermore, when the two conveyor belts are close together to form the narrowest channel, the lateral constraint force on the box increases, which is conducive to the stable passage of the box through the conveying area and reduces the phenomenon of poor wrapping or jamming caused by swinging.

[0017] 2. In this design, a single motor and its drive shaft drive the two active pulleys on both sides, allowing the conveyor belts on both sides to rotate synchronously under the same drive source. This avoids the complex synchronous control caused by multiple power sources, reduces costs, simplifies control, and improves operational consistency. The central drive shaft drives the two active pulleys on both sides and allows axial sliding, which can replace complex independent tensioning mechanisms. This design has fewer parts, is easier to maintain, and reduces manufacturing and operating costs. Synchronous transmission reduces the impact caused by differential speed, and axial following movement can avoid sudden belt slack during base plate adjustment, improving long-term operational stability and repeatability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a conveying device for packaging boxes according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the conveying device for packaging boxes according to an embodiment of the present invention from another perspective;

[0020] Figure 3 This is a schematic diagram of the structure of the conveying device for packaging boxes according to an embodiment of the present invention from another perspective;

[0021] Figure 4 This is a cross-sectional view of the conveying device for packaging boxes according to an embodiment of the present invention along the drive shaft;

[0022] Figure 5 This is a schematic diagram of the drive shaft and drive pulley of the transmission device for packaging boxes according to an embodiment of the present invention.

[0023] Icons: 1-Frame; 11-Left base plate; 12-Right base plate; 2-Transmission mechanism; 21-First conveyor belt; 22-Second conveyor belt; 3-Drive mechanism; 31-Motor component; 32-Drive shaft; 33-First drive pulley; 34-Second drive pulley; 35-Spline; 36-Driven pulley; 4-Guide rod; 5-Guide sleeve; 6-Another transmission line. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0025] Example

[0026] Combination Figures 1 to 5 This embodiment provides a transmission device for packaging boxes, including a frame 1, a transmission mechanism 2, and a drive mechanism 3.

[0027] The frame 1 is provided with a left base plate 11 and a right base plate 12. The transmission mechanism 2 includes a first conveyor belt 21 correspondingly disposed on the left base plate 11 and a second conveyor belt 22 correspondingly disposed on the right base plate 12, and a transmission channel for supporting packaging boxes to be wrapped is formed between the first conveyor belt 21 and the second conveyor belt 22. The driving mechanism 3 includes a motor component 31 and a drive shaft 32 that is pulverizedly connected to the motor component 31. The drive shaft 32 is provided with a first drive pulley 33 that meshes with the first conveyor belt 21 and a second drive pulley 34 that meshes with the second conveyor belt 22. The drive shaft 32 can drive the first drive pulley 33 and the second drive pulley 34 to rotate synchronously along the axial direction.

[0028] The left substrate 11 or the right substrate 12 can move closer or further apart in the lateral direction. The drive shaft 32 is configured to allow the first drive pulley 33 and the second drive pulley 34 to follow the corresponding conveyor belt, so that when the left substrate 11 or the right substrate 12 moves, they move closer to each other to form the narrowest transmission channel.

[0029] The aforementioned transmission device, because the drive pulley can move along the drive shaft 32 axially with the position of the conveyor belt, ensures that the drive pulley and the conveyor belt remain engaged when the two substrates are close or far apart. This avoids pulley disengagement, slippage, or deviation caused by relative displacement, thus improving the stability and reliability of the conveying process. In particular, the two substrates can move laterally, and the drive pulley can follow suit, allowing the width of the transmission channel to be quickly adjusted to the required size, or even to the narrowest channel, to facilitate the smooth transmission of narrow packaging boxes. This enables convenient changeover and high line changeover efficiency. Furthermore, when the two conveyor belts are joined together to form the narrowest channel, the lateral constraint force on the box increases, which helps the box pass through the transmission area stably and reduces poor wrapping or jamming caused by swaying.

[0030] By using a single motor component 31 and its drive shaft 32 to drive the two active pulleys, the two conveyor belts rotate synchronously under the same drive source, avoiding the complex synchronous control caused by multiple power sources, reducing costs, simplifying control, and improving operational consistency. The central drive shaft 32 drives the two active pulleys and allows axial sliding, which can replace the complex independent tensioning mechanism. It has fewer parts, is easier to maintain, and reduces manufacturing and operating costs. Synchronous transmission reduces the impact caused by differential speed, and axial following movement can avoid belt slack abrupt changes during base plate adjustment, improving long-term operational stability and repeatability.

[0031] like Figures 3 to 5 As shown, in this embodiment, the first drive pulley 33 and the second drive pulley 34 are sequentially mounted on the drive shaft 32. Each drive pulley can move axially relative to the drive shaft 32 and rotate synchronously relative to the drive shaft 32. On one hand, there are no other components interfering with the two drive pulleys. After the substrates move relative to each other, the two drive pulleys can come together and form the narrowest possible transmission channel. On the other hand, each drive pulley can move axially relative to the drive shaft 32, and the keyway connection ensures synchronous rotation with the drive shaft 32, fundamentally solving the meshing transmission problem after adjustment. When the two substrates move closer or further apart, the drive pulleys can adjust axially according to the position of their respective conveyor belts, while maintaining a consistent angular velocity, avoiding conveying misalignment or overturning caused by speed differences between the two conveyor belts.

[0032] Furthermore, the drive shaft 32 is splinedly fitted with the first drive pulley 33 and the second drive pulley 34. The first drive pulley 33 and the second drive pulley 34 are respectively sleeved on the drive shaft 32 via splines 35, allowing them to slide axially relative to the drive shaft 32 and rotate synchronously with the drive shaft 32 via splines 35. Obviously, the spline fit ensures that the drive pulleys rotate synchronously with the drive shaft 32, while also allowing axial sliding to accommodate the lateral adjustment of the left and right base plates 12, thereby meeting the required functional requirements.

[0033] Driven pulleys 36 are provided at both ends of the first conveyor belt 21, and another driven pulley 36 is provided at both ends of the second conveyor belt 22. It should be noted that the driven pulleys 36 at the ends form a closed loop for the conveyor belts, ensuring proper wrapping and guidance of the belt between the driving pulley and the driven pulley 36, facilitating power transmission control. Furthermore, the adjustable or elastically compensated driven pulleys 36 ensure that appropriate tension is maintained when the left and right base plates 12 move or when the belt stretches or wears, preventing deviation or slippage caused by slack.

[0034] Preferably, the motor component 31 is a servo motor, and the servo motor and the drive shaft 32 are connected by a belt drive. In other embodiments, it can also be driven by a chain drive, gear drive, etc., all of which fall within the protection scope of this case.

[0035] like Figure 1 and Figure 2As shown, in this embodiment, the frame 1 is provided with a corresponding guiding mechanism. The guiding mechanism includes at least one set of guide rods 4 that are transversely inserted between the left substrate 11 and the right substrate 12, and guide sleeves 5 that are slidably sleeved on the guide rods 4. The guide sleeves 5 are respectively disposed on the left substrate 11 and the right substrate 12. By transversely inserting the guide rods 4 between the two substrates and equipping them with a sliding structure, the movement trajectory of the substrates can be constrained during transverse movement, preventing deflection, tilting, or relative torsion. This ensures that the conveyor channel is always in the expected coaxial and coplanar position, which is beneficial to the meshing stability of the conveyor belt and the pulley.

[0036] In this configuration, the left substrate 11 moves relative to the right substrate 12 until its first drive pulley 33 and second drive pulley 34 are in contact with each other, correspondingly causing the first conveyor belt 21 and the second conveyor belt 22 to be horizontally attached together. Thus, after the two conveyor belts are horizontally attached, a continuous support surface is formed at the transmission channel, which can significantly improve the stability and guiding accuracy of thin or flexible boxes during transmission, and reduce swaying and wrapping defects.

[0037] It should be noted that a limiting mechanism (not shown in the figure) is correspondingly provided on the frame 1. The limiting mechanism is configured to restrict the left substrate 11 from continuing to move when it moves away from the right substrate 12, thereby forming the widest possible transmission channel. Obviously, the limiting mechanism can be an existing technology such as mechanical stop, buffer energy absorption, intelligent linkage control, or a stop structure, and no further restrictions are imposed here.

[0038] like Figure 2 As shown, in this embodiment, the first conveyor belt 21 and the second conveyor belt 22 are respectively constructed to form a transmission line at the front section of the frame 1, and another transmission line 6 is correspondingly provided at the rear section of the frame 1 to connect with the two conveyor belts. The two-section transmission facilitates the linkage and automation of the entire line. Through reasonable connection, manual handling and intermediate stoppages are reduced, the defect rate is reduced, and the line speed and production capacity are increased.

[0039] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.

Claims

1. A conveying device for packaging boxes, characterized in that, The system includes a frame, a transmission mechanism, and a drive mechanism. The frame has a left substrate and a right substrate. The transmission mechanism includes a first conveyor belt corresponding to the left substrate and a second conveyor belt corresponding to the right substrate, forming a transmission channel between the first and second conveyor belts for supporting packaging boxes to be wrapped. The drive mechanism includes a motor and a drive shaft connected to the motor. The drive shaft has a first drive pulley meshing with the first conveyor belt and a second drive pulley meshing with the second conveyor belt. The drive shaft can drive the first and second drive pulleys to rotate synchronously along the axial direction. The left or right substrate can move closer or further apart laterally. The drive shaft is configured to allow the first and second drive pulleys to follow their respective conveyor belts, so that when the left or right substrate moves, they move closer together to form the narrowest possible transmission channel.

2. The conveying device for packaging boxes according to claim 1, characterized in that, The first and second drive pulleys are sequentially mounted on the drive shaft. Each drive pulley can move axially relative to the drive shaft and can rotate synchronously relative to the drive shaft.

3. The conveying device for packaging boxes according to claim 2, characterized in that, The drive shaft is splined with the first drive pulley and the second drive pulley. The first drive pulley and the second drive pulley are respectively sleeved on the drive shaft by splines so as to slide relative to the drive shaft along the axial direction and rotate synchronously with the drive shaft by splines.

4. The conveying device for packaging boxes according to claim 3, characterized in that, A driven pulley is provided at each end of the first conveyor belt, and another driven pulley is provided at each end of the second conveyor belt.

5. The conveying device for packaging boxes according to claim 1, characterized in that, The motor is a servo motor, and the servo motor and the drive shaft are connected by a belt drive.

6. The conveying device for packaging boxes according to claim 1, characterized in that, The frame is provided with a corresponding guiding mechanism, which includes at least one set of guide rods that are horizontally inserted between the left substrate and the right substrate, and a guide sleeve that is slidably sleeved on the guide rods, and the guide sleeves are respectively disposed on the left substrate and the right substrate.

7. The conveying device for packaging boxes according to claim 1, characterized in that, The left substrate moves relative to the right substrate until its first drive pulley and second drive pulley are in contact with each other, so that the first conveyor belt and the second conveyor belt are exactly in horizontal contact.

8. The conveying device for packaging boxes according to claim 7, characterized in that, A limiting mechanism is provided on the rack. The limiting mechanism is configured to restrict the left substrate from continuing to move when the left substrate moves away from the right substrate, thereby forming the widest transmission channel.

9. The conveying device for packaging boxes according to claim 1, characterized in that, The first conveyor belt and the second conveyor belt are respectively constructed to form a transmission line at the front of the frame, and the rear of the frame is respectively provided with another transmission line that is connected to the two conveyor belts.

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