An automatic pre-folding box device

Abstract

This invention provides an automatic pre-folding carton device, including a frame with a conveying mechanism, a folding mechanism, and a pressing mechanism. The conveying mechanism includes a roller surface and two symmetrically arranged sets of clamping roller assemblies. The roller surface carries the carton. The distance between the two sets of clamping roller assemblies is adjustable, forming a conveying channel for transporting the carton. The folding mechanism folds the four open sides of the carton and is vertically adjustable on the frame via a first lifting module. The pressing mechanism presses down on the top surface of the folded carton. This invention automates the carton folding operation through the coordinated work of the conveying mechanism, folding mechanism, and pressing mechanism, eliminating the need for manual bending of each of the four flaps, significantly improving the efficiency of carton packaging and meeting the demands of large-scale production for packaging efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box packaging technology, and in particular to an automatic pre-folding box device. Background Technology

[0002] In most industries, such as electronics, daily necessities, and food, products are typically packaged in cardboard boxes before leaving the factory to facilitate storage, transportation, and protection from damage during distribution. The cardboard box packaging process involves first placing the product into an open cardboard box, then folding the front, back, left, and right flaps at the opening, and finally sealing the folded box with tape.

[0003] Currently, most carton folding operations in the industry are done manually. However, manual folding has significant drawbacks: on the one hand, manual operation is extremely inefficient, requiring operators to manually bend all four flaps one by one to complete the folding of each carton, which is difficult to meet the packaging efficiency requirements of large-scale production; on the other hand, the top of the carton is easily loosened after manual folding, requiring a second fold, which not only increases the labor intensity of operators but also further reduces packaging efficiency.

[0004] To address the aforementioned problems, this invention proposes an automatic pre-folding carton device that automates the carton folding process, thereby improving efficiency. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide an automatic pre-folding box device to solve the problems of low efficiency and easy loosening of manual box folding in the prior art.

[0006] To achieve the above and other related objectives, this utility model provides an automatic pre-folding box device, including a frame, on which are provided: A conveying mechanism is provided for carrying and conveying cartons. The conveying mechanism includes a roller surface and two symmetrically arranged sets of clamping roller assemblies. The roller surface is used to carry the cartons. The distance between the two sets of clamping roller assemblies can be adjusted, and a conveying channel for conveying cartons is formed between the two sets of clamping roller assemblies. A folding mechanism is used to fold the four open sides of the top of the carton. The folding mechanism is mounted on the frame in a height-adjustable manner via a first lifting module. A pressing mechanism is used to press the top surface of the carton after the flap is folded.

[0007] In one embodiment of the present invention, the clamping roller assembly includes a mounting frame, a drive pulley set, a driven pulley set, a belt, and a motor. The drive pulley set is mounted at one end of the mounting frame and is driven to rotate by the motor. The driven pulley set is mounted at the other end of the mounting frame. The belt is sleeved between the drive pulley set and the driven pulley set. A plurality of guide pulley sets are also installed at intervals along the length direction of the mounting frame. The guide pulley sets are located inside the belt.

[0008] In one embodiment of the present invention, a guide shaft is provided below the roller surface, and the bottom of the mounting bracket is slidably connected to the guide shaft via a bearing seat; a locking structure for locking the sliding position is also provided between the bearing seat and the guide shaft.

[0009] In one embodiment of the present invention, the conveying direction of the roller surface is consistent with the conveying direction of the clamping roller assembly.

[0010] In one embodiment of this utility model, the folding mechanism includes a bracket, a guide plate, a pressure head, and a side pressure assembly; the bracket is movably mounted on the frame via a first lifting module, the guide plate is suspended below the bracket, and the guide plate has an inclined portion at its inlet end; the pressure head is retractably mounted on the inlet end of the bracket via a first cylinder; the side pressure assembly is respectively mounted on both sides of the bracket, and the side pressure assembly includes a second cylinder, a connecting rod, and a side pressure plate; the second cylinder is inclinedly mounted on the side of the bracket, the output end of the second cylinder is pivotally connected to the upper end of the connecting rod, and the lower end of the connecting rod is connected to the side pressure plate; two downwardly extending vertical plates are respectively provided on both sides of the bracket, and the two ends of the side pressure plate are rotatably disposed between the two vertical plates.

[0011] In one embodiment of the present invention, the side pressure plate has a rotating shaft arranged along its length, and the two ends of the rotating shaft are respectively rotatably connected to the corresponding upright plate.

[0012] In one embodiment of the present invention, the connecting rod is arc-shaped; the output end of the second cylinder is provided with a first pivot seat, and the upper end of the connecting rod is pivotally connected to the first pivot seat.

[0013] In one embodiment of the present invention, the second cylinder is mounted on the bracket via a second pivot seat, the end of the second cylinder is rotatably connected to the second pivot seat, and the second pivot seat is provided with a positioning structure for locking the rotation angle of the second cylinder relative to the second pivot seat.

[0014] In one embodiment of the present invention, the bottom of the guide plate is arranged horizontally, the angle between the inclined portion of the guide plate and the bottom is an obtuse angle, and there is an arc transition between the inclined portion of the guide plate and the bottom.

[0015] In one embodiment of the present invention, the first cylinder is arranged at an angle downwards, and the pressure head is connected to the output end of the first cylinder.

[0016] In one embodiment of this utility model, the pressure head transitions toward the guide plate in an arc shape.

[0017] In one embodiment of the present invention, the pressing mechanism includes a second lifting module, a pressure frame and a pressure roller. The second lifting module is inverted and mounted on the frame. The pressure frame is fixed to the telescopic end of the second lifting module, and the pressure roller is rotatably connected to the pressure frame.

[0018] As described above, the automatic pre-folding box device of this utility model has the following beneficial effects: 1. This utility model automates the carton folding operation through the coordinated work of the conveying mechanism, the folding mechanism and the pressing mechanism. It eliminates the need for manual bending of the four flaps one by one, greatly improving the efficiency of carton packaging and meeting the needs of large-scale production for packaging efficiency.

[0019] 2. The folding mechanism, through the cooperation of the guide plate, the pressure head and the side pressure component, performs precise and stable folding operations on the four flaps of the carton. The pressing mechanism can press the top surface of the folded carton firmly, effectively preventing the flaps from loosening, avoiding secondary folding operations, reducing the labor intensity of operators, and further ensuring packaging efficiency and packaging quality.

[0020] 3. The distance between the two sets of clamping roller assemblies in the conveying mechanism is adjustable, and the height of the folding mechanism and the pressing mechanism can be adjusted through the corresponding lifting module, so that the equipment can adapt to cartons of different sizes, improve the versatility and applicability of the equipment, and reduce the cost for enterprises to replace equipment due to changing to different sizes of cartons. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of the automatic pre-folding box device disclosed in the embodiments of this utility model.

[0022] Figure 2 This is a side view of the automatic pre-folding box device disclosed in the embodiments of this utility model.

[0023] Figure 3 This is a disassembly diagram of the automatic pre-folding box device disclosed in the embodiments of this utility model.

[0024] Figure 4 This is a schematic diagram of the structure of the pinch roller assembly disclosed in the embodiments of this utility model.

[0025] Figure 5 This is a schematic diagram of the folding mechanism disclosed in the embodiments of this utility model.

[0026] Figure 6 This is a side view of the folding mechanism disclosed in the embodiments of this utility model.

[0027] Figure 7 This is a schematic diagram of the side pressure component in the folding mechanism disclosed in the embodiments of this utility model in the open state.

[0028] Figure 8 This is a schematic diagram of the side pressing component in the folding mechanism disclosed in the embodiments of this utility model, in its pressed-down state.

[0029] Figure 9 This is a schematic diagram of the pressing mechanism disclosed in the embodiments of this utility model.

[0030] Component designation explanation 1. Frame; 2. Conveying mechanism; 21. Roller surface; 22. Clamping roller assembly; 221. Mounting frame; 222. Drive wheel assembly; 223. Driven wheel assembly; 224. Belt; 225. Motor; 226. Guide wheel assembly; 23. Guide shaft; 24. Bearing seat; 3. Folding mechanism; 31. Bracket; 311. Vertical plate; 32. Guide plate; 321. Inclined part; 33. Press head; 34. First cylinder; 35. Second cylinder; 36. First pivot seat; 37. Connecting rod; 38. Side pressure plate; 39. Second pivot seat; 4. First lifting module; 5. Pressing mechanism; 51. Second lifting module; 52. Press frame; 53. Pressure roller; 6. Carton. Detailed Implementation

[0031] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] Please see Figures 1-3 This utility model provides an automatic pre-folding box device, including a frame 1. The frame 1 is provided with a conveying mechanism 2, a folding mechanism 3 and a pressing mechanism 5. The conveying mechanism 2 is used to carry and convey a carton 6. The folding mechanism 3 is used to fold the four open sides of the carton 6. The pressing mechanism 5 is used to press the top surface of the folded carton 6.

[0033] The conveying mechanism 2 is used to carry and transport the carton 6. One end of the conveying mechanism 2 is the inlet, and the other end is the outlet. The conveying direction is from the inlet to the outlet. The conveying mechanism 2 includes a roller surface 21 and two symmetrically arranged clamping roller assemblies 22. The roller surface 21 is composed of multiple rotating rollers. The roller surface 21 directly carries the carton 6, providing a stable support surface for the carton 6, and uses rolling friction to drive the carton 6 forward. The conveying direction of the roller surface 21 is consistent with the conveying direction of the clamping roller assembly 22. (Reference) Figure 4 The clamping roller assembly 22 includes a mounting frame 221, a drive pulley set 222, a driven pulley set 223, a belt 224, and a motor 225. The drive pulley set 222 is mounted at one end of the mounting frame 221 and is driven to rotate by the motor 225. The driven pulley set 223 is mounted at the other end of the mounting frame 221. The belt 224 is wrapped between the drive pulley set 222 and the driven pulley set 223. When the motor 225 starts, it drives the drive pulley set 222 to rotate, and the drive pulley set 222 drives the driven pulley set 223 to rotate synchronously via the belt 224, thereby conveying the carton 6. Multiple guide pulley sets 226 are also installed at intervals along the length of the mounting frame 221. The guide pulley sets 226 are located inside the belt 224 and are aligned with the drive pulley set 222 and the driven pulley set 223. Their function is to support and guide the belt 224, preventing it from shifting or sagging during operation and ensuring the stability of the carton 6 conveying.

[0034] To achieve adjustable spacing between the two sets of clamping roller assemblies 22, two guide shafts 23 are provided below the roller surface 21, and the guide shafts 23 are arranged parallel to the roller. The bottom of the mounting frame 221 is slidably connected to the guide shafts 23 via bearing seats 24. The operator can push the mounting frame 221 to slide along the guide shafts 23 according to the width of the carton 6, thereby adjusting the spacing between the two sets of clamping roller assemblies 22 to accommodate cartons 6 of different widths. At the same time, a locking structure is provided between the bearing seat 24 and the guide shafts 23 to lock their sliding position. When the spacing is adjusted to the correct position, the mounting frame 221 is fixed by the locking structure to prevent the mounting frame 221 from moving during conveying and to ensure the stability of the width of the conveying channel. The locking structure can be a locking bolt provided on the bearing seat 24, with one end of the locking bolt passing through the bearing seat 24 and abutting against the guide shaft 23.

[0035] refer to Figures 5-8 The folding mechanism 3 is used to fold the four open sides of the top of the carton 6. It is mounted on the frame 1 and can be raised and lowered via the first lifting module 4. The height of the folding mechanism 3 can be adjusted by the lifting action of the first lifting module 4 to accommodate cartons 6 of different heights, ensuring the accuracy of the folding operation.

[0036] Specifically, the folding mechanism 3 includes a bracket 31, a guide plate 32, a pressure head 33, and a side pressure assembly. The bracket 31 is vertically mounted on the frame 1 via the first lifting module 4. The guide plate 32 is suspended below the bracket 31, and its function is to guide the folding of the carton 6 when it is conveyed to the folding mechanism 3. The guide plate 32 has an inclined portion 321 at its inlet end, and the bottom of the guide plate 32 is horizontally arranged. The angle between the inclined portion 321 and the bottom is an obtuse angle, and there is an arc transition between the two. The guide plate 32 can guide the two side flaps of the carton 6 during the conveying process, and the design of its inclined portion 321 is the key structure for realizing the front folding action.

[0037] The pressure head 33 is telescopically mounted on the inlet end of the bracket 31 via a first cylinder 34. The first cylinder 34 is arranged at an angle downwards, and the pressure head 33 is connected to the output end of the first cylinder 34, with the pressure head 33 transitioning towards the arc of the guide plate 32. When the rear flap of the carton 6 reaches the designated position under the guidance of the guide plate 32, the first cylinder 34 extends, pushing the pressure head 33 downwards to press and fold the rear flap, folding it to the preset position on the top surface of the carton 6.

[0038] Side-pressure components are installed on both sides of the bracket 31 to fold the left and right flaps of the carton 6. The side-pressure components include a second cylinder 35, a connecting rod 37, and a side-pressure plate 38. The second cylinder 35 is mounted on the bracket 31 via a second pivot seat 39. The end of the second cylinder 35 is rotatably connected to the second pivot seat 39, and the second pivot seat 39 is provided with a positioning structure to lock the rotation angle of the second cylinder 35 relative to the second pivot seat 39. By adjusting the rotation angle of the second cylinder 35 and locking it using the positioning structure, the pressing force and angle of the side-pressure components on the left and right flaps can be changed to adapt to the folding flaps of the carton 6 with different materials and thicknesses, ensuring the folding effect.

[0039] The output end of the second cylinder 35 is provided with a first pivot seat 36. The upper end of the connecting rod 37 is pivotally connected to the first pivot seat 36. The connecting rod 37 is arc-shaped, and its lower end is connected to the side pressure plate 38. The bracket 31 has two downwardly extending vertical plates 311 on both sides. The side pressure plate 38 has a rotating shaft arranged along its length direction. The two ends of the rotating shaft are rotatably connected to the corresponding vertical plates 311. When it is necessary to fold the left and right flaps, the second cylinder 35 extends and drives the connecting rod 37 to move through the first pivot seat 36. The connecting rod 37 pushes the side pressure plate 38 to rotate around the rotating shaft. During the rotation, the side pressure plate 38 presses the left or right flap and folds it to the preset position on the top surface of the carton 6, completing the folding operation of the left and right flaps.

[0040] The pressing mechanism 5 is used to press the top surface of the folded carton 6 to prevent the folded flap from coming loose during subsequent conveying, ensuring that the folded flap remains in the folded state before the carton 6 enters the sealing process.

[0041] refer to Figure 9 The pressing mechanism 5 includes a second lifting module 51, a pressure frame 52, and a pressure roller 53. The second lifting module 51 is inverted and mounted on the frame 1. The pressure frame 52 is fixed to the telescopic end of the second lifting module 51, and the pressure roller 53 is rotatably connected to the pressure frame 52. The heights of the pressure frame 52 and the pressure roller 53 are adjusted by the second lifting module 51 according to the height of the carton 6, ensuring that the pressure roller 53 maintains appropriate contact pressure with the top surface of the folded carton 6. When the folded carton 6 is conveyed to the pressing mechanism 5, the pressure roller 53 rotates under the conveying action of the carton 6, simultaneously applying continuous pressure to the top surface of the carton 6, pressing the four folded flaps tightly against the top surface of the carton 6, effectively preventing the flaps from loosening and providing good preconditions for the subsequent sealing process.

[0042] Working principle explanation: First, based on the size of the carton, the spacing between the two sets of clamping roller assemblies is adjusted via the guide shaft to make the width of the conveying channel match the width of the carton. At the same time, the height of the flap folding mechanism is adjusted via the first lifting module, and the height of the pressure roller in the pressing mechanism is adjusted via the second lifting module to ensure that each mechanism matches the size of the carton.

[0043] Then, the open carton containing the product is placed on the roller surface of the conveyor mechanism, and the motor of the clamping roller assembly is started. Under the combined action of the roller surface and the clamping roller assembly, the carton is conveyed along the conveyor channel towards the folding mechanism.

[0044] When the carton is conveyed to the folding mechanism, the guide plate first folds the front cover of the carton; then, when the rear cover of the carton reaches the pressure head, the first cylinder extends, pushing the pressure head downward to fold the rear cover to the top of the carton; subsequently, the second cylinders on both sides extend, driving the side pressure plates to rotate around the shaft through the connecting rod, and the side pressure plates fold the left and right covers to the top of the carton respectively, thus completing the folding operation of the four open sides of the carton.

[0045] After the carton is folded, it continues to be conveyed towards the pressing mechanism by the conveying mechanism. When the carton enters the area below the pressing mechanism, the pressure roller rotates under the conveying action of the carton and applies continuous pressure to the top surface of the carton to press the four folded flaps tightly and prevent them from coming loose, thus completing the pre-folding process of the entire carton packaging.

[0046] In summary, this invention automates the carton folding operation through the coordinated work of the conveying mechanism, the folding mechanism, and the pressing mechanism. It eliminates the need for manual bending of each of the four flaps, significantly improving the efficiency of carton packaging and meeting the demands of large-scale production. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and possesses high industrial applicability.

[0047] The terms used in this specification, such as "upper", "lower", "left", "right", "front", "back", "middle" and "one", are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered within the scope of implementation of this utility model.

[0048] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An automatic carton pre-folding apparatus, characterized by, The rack is provided with: A conveying mechanism, which comprises a cylinder surface for carrying cartons and two sets of symmetrical clamping roller assemblies, the distance between the two sets of clamping roller assemblies can be adjusted, and a conveying channel for conveying cartons is formed between the two sets of clamping roller assemblies; A cover folding mechanism, which is arranged on the rack in a liftable manner through a first lifting module and is used for folding four open upper surfaces of the cartons; A pressing mechanism, which is used for pressing the top surface of the folded cartons.

2. The automatic pre-folding box apparatus according to claim 1, characterized in that, The clamping roller assembly comprises a mounting frame, a driving wheel set, a driven wheel set, a belt and a motor, the driving wheel set is installed at one end of the mounting frame and is driven to rotate by the motor, the driven wheel set is installed at the other end of the mounting frame, and the belt is sleeved between the driving wheel set and the driven wheel set; a plurality of guide wheel sets are also installed at intervals along the length direction of the mounting frame, and the guide wheel sets are located on the inner side of the belt.

3. The automatic pre-folding box apparatus according to claim 2, characterized in that, A guide shaft is arranged below the roller surface, and the bottom of the mounting frame is slidably connected to the guide shaft through a bearing seat; a locking structure is further arranged between the bearing seat and the guide shaft to lock the sliding position.

4. The automatic pre-folding box apparatus according to claim 1, characterized in that, The transmission direction of the cylinder surface is consistent with the conveying direction of the clamping roller assembly.

5. The automatic pre-folding box apparatus according to claim 1, wherein, The cover folding mechanism comprises a support, a guide plate, a pressing head and a side pressing assembly; the support is arranged on the rack in a liftable manner through a first lifting module, the guide plate is hung below the support, the entry end of the guide plate has an inclined portion; the pressing head is telescopically installed at the entry end of the support through a first cylinder; the side pressing assembly is respectively installed on both sides of the support, and the side pressing assembly comprises a second cylinder, a connecting rod and a side pressing plate, the second cylinder is obliquely installed beside the support, the output end of the second cylinder is pivotally connected to the upper end of the connecting rod, and the lower end of the connecting rod is connected to the side pressing plate; two vertical plates extending downward are respectively arranged on both sides of the support, and both ends of the side pressing plate are rotatably arranged between the two vertical plates.

6. The automatic pre-folding box apparatus according to claim 5, characterized in that, The connecting rod is arc-shaped, the output end of the second cylinder is provided with a first pivot seat, and the upper end of the connecting rod is pivotally connected to the first pivot seat.

7. The automatic pre-folding box apparatus according to claim 5, wherein, The bottom of the guide plate is horizontally arranged, the included angle between the inclined portion and the bottom of the guide plate is obtuse, and the inclined portion and the bottom of the guide plate have an arc-shaped transition.

8. The automatic pre-folding box apparatus according to claim 5, wherein, The first cylinder is obliquely arranged downward, and the pressing head is connected to the output end of the first cylinder.

9. The automatic pre-folding box apparatus according to claim 5, wherein, The pressing head faces the arc-shaped transition of the guide plate.

10. The automatic carton pre-folding apparatus of claim 1, wherein, The pressing mechanism comprises a second lifting module, a pressing frame and a pressing roller, the second lifting module is hung downward on the rack, the pressing frame is fixed at the telescopic end of the second lifting module, and the pressing roller is rotatably connected to the pressing frame.

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