Packaging box conveying and feeding mechanism

Abstract

This invention relates to a packaging box conveying and feeding mechanism, comprising a box storage assembly and a box suction assembly. The box storage assembly includes a mounting base with a conveyor belt. Multiple toothed grooves are continuously arranged on the conveying surface of the conveyor belt, with equal spacing along its length. Folded boxes are inserted into these toothed grooves by their sides, thus forcibly confining each box to its corresponding groove in the conveying direction. An inner baffle is located on the inner side of the conveyor belt, with the bottom of the box abutting and aligned with it. This invention eliminates the fan-shaped effect caused by uneven box thickness through the combined limiting effect of the toothed grooves and the inner baffle, ensuring that each box reaches a consistent height at the output end. The suction cup can accurately and stably pick up each box individually, effectively improving packaging efficiency and equipment reliability. This invention is compact, easy to adjust, and suitable for the automated supply of various foldable packaging boxes.

Description

Technical Field

[0001] This invention relates to the field of packaging machinery and equipment technology, and in particular to a packaging box conveying and feeding mechanism. Background Technology

[0002] In automated packaging production, folded boxes (such as unformed cardboard boxes and color boxes) are typically conveyed one by one to the suction station by a feeding mechanism, where they are then picked up by suction cups and unfolded or transferred to the next packaging process. In existing technology, when folded boxes are stacked on a conveyor belt, the uneven thickness of the boxes in their folded state (e.g., thicker at the bottom and thinner at the opening) causes the stacked boxes to stagger like a fan (forming a stepped or fan shape), a phenomenon known as the "fan effect." This fan effect makes the relative positions of the boxes extremely unstable, preventing the center lines of the boxes from aligning. Consequently, the suction cups cannot accurately and stably pick up each box, easily leading to gaps or misalignment, severely impacting packaging efficiency and equipment stability. Furthermore, scattered or irregularly arranged boxes arrive at the suction station in random positions, requiring complex visual positioning or adjustments by the robotic arm or suction cups; otherwise, accurate gripping is impossible, affecting production cycle time. In addition, folded cardboard boxes have an unstable center of gravity and uneven weight distribution between the bottom and top. On high-speed conveyor belts, the boxes are prone to tilting, tipping, or even overturning (box tipping) because the lateral position is limited only by setting baffles on both sides of the conveyor belt. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a packaging box conveying and feeding mechanism that is simple in structure, reasonable in design, eliminates the fan-shaped effect, achieves forced alignment, and provides stable suction.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a packaging box conveying and feeding mechanism, including a box storage assembly and a box suction assembly. The box storage assembly includes a mounting base, and a conveyor belt is provided on the mounting base. The conveyor belt has a plurality of toothed grooves continuously arranged on its conveying surface for independently supporting and positioning individual packaging boxes. The toothed grooves are arranged at equal intervals along the length direction of the conveyor belt. When the packaging box is folded, its side is inserted into the toothed groove, so that the position of each packaging box in the conveying direction is forcibly limited to the corresponding toothed groove. The mounting base is provided with an inner baffle on the inner side of the conveyor belt, and the bottom of the packaging box abuts and aligns with the inner baffle.

[0005] Preferably, the box assembly further includes a support main board, on which a sliding shaft is provided, and a slider is provided on the sliding shaft. The mounting base is fixed on the slider. The support main board is also provided with an adjusting screw for driving the slider to slide on the sliding shaft and an adjusting shaft for driving the adjusting screw to rotate.

[0006] Preferably, the mounting base is rotatably provided with a drive wheel and a driven wheel, and the conveyor belt is wound around the drive wheel and the driven wheel. The drive wheel is equipped with a servo motor for driving its rotation, and the inner side of the conveyor belt is also provided with toothed grooves for meshing and transmission with the drive wheel and the driven wheel.

[0007] Preferably, the mounting base has an output section that bends downward on the output end side of the conveyor belt, the driven wheel is disposed on the output section of the mounting base, and the mounting base has pressure rollers that abut against the conveyor belt at both the bend and the drive wheel.

[0008] Preferably, the suction box assembly includes a suction box frame, a suction box plate rotatably mounted on the suction box frame, a suction box rod rotatably mounted on the suction box plate, and at least one set of suction cups for picking up the packaging box on the suction box rod. The suction box plate has a first degree of rotational freedom relative to the suction box frame, and the suction box rod has a second degree of rotational freedom relative to the suction box plate, so that the suction cups can approach the packaging box at multiple angles.

[0009] Preferably, the mounting base is provided with two sets of parallel conveyor belts for jointly clamping and supporting the packaging box.

[0010] Preferably, the mounting base is provided with an outer baffle on the outside of the conveyor belt via an adjusting block, and the outer baffle is provided at least at the output section of the mounting base and the bending part of the mounting base.

[0011] Preferably, the output section of the mounting base is provided with a vertical plate, an upper baffle is slidably provided on the vertical plate, and an upper guide bar is provided on the lower side of the upper baffle along the conveying direction of the conveyor belt.

[0012] Preferably, the lower side of the upper baffle is also provided with a material level detection seat, the material level detection seat is provided with a proximity sensor, and the material level detection seat is also rotatably provided with a sensing hook. When the packaging box passes under the sensing hook, it drives the sensing hook to rotate, and the proximity sensor sends a signal according to the rotation of the sensing hook.

[0013] The beneficial effects of this invention are: 1. By setting equally spaced toothed grooves on the conveyor belt, the folded packaging boxes are inserted into the toothed grooves with their sides. The position of each packaging box in the conveying direction is forcibly limited to a fixed toothed groove position, which completely eliminates the fan-shaped stacking effect caused by uneven packaging box thickness. 2. The toothed groove and the inner baffle work together to forcibly limit the packaging box in the conveying direction and laterally, so that the spatial position height of each packaging box is consistent when it arrives at the output end. The suction cup can accurately and stably pick up each one, avoiding the problems of suctioning empty space or suctioning off-center. 3. The conveyor belt features a double-sided toothed groove design, with the inner side meshing with the pulley for transmission and the outer side used for positioning the packaging box. This ensures precise transmission, and the pressure roller structure ensures that the conveyor belt remains in contact with the pulley in curved sections to prevent slippage. 4. The material level detection device, consisting of an induction hook and a proximity sensor, can reliably detect the position of the packaging box, providing control signals to the servo motor and the suction box assembly to achieve automated operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 This is a diagram showing the usage status of the box library component of the present invention; Figure 3 This is a partially enlarged view of the box library component of the present invention; Figure 4 This is a magnified front view of the box library component of the present invention; Figure 5 This is an enlarged view of the box library component of the present invention in use.

[0015] In the diagram: 1. Mounting base; 2. Conveyor belt; 3. Toothed groove; 4. Inner baffle; 5. Support main plate; 6. Sliding shaft; 7. Slider; 8. Adjusting screw; 9. Adjusting shaft; 10. Driving wheel; 11. Driven wheel; 12. Servo motor; 13. Output section; 14. Pressure roller; 15. Suction box frame; 16. Suction box plate; 17. Suction box rod; 18. Suction cup; 19. Adjusting block; 20. Outer baffle; 21. Vertical plate; 22. Upper baffle; 23. Upper guide bar; 24. Material level detection seat; 25. Proximity sensor; 26. Induction hook. Detailed Implementation

[0016] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0017] Example 1: As Figures 1 to 5 The illustrated packaging box conveying and feeding mechanism includes a box storage assembly and a box suction assembly.

[0018] The box storage assembly includes a mounting base 1, on which a conveyor belt 2 is mounted. The conveyor belt 2 has multiple toothed grooves 3 continuously arranged on its conveying surface for independently supporting and positioning individual packaging boxes. The toothed grooves 3 are evenly spaced along the length of the conveyor belt 2. When a packaging box is folded, its side is inserted into the toothed groove 3, so that the position of each packaging box in the conveying direction is forcibly limited to the corresponding toothed groove. The bottom of each toothed groove 3 is a flat structure for supporting the side of the folded packaging box. A drive wheel 10 and a driven wheel 11 are rotatably mounted on the mounting base 1. The conveyor belt 2 is wound around the drive wheel 10 and the driven wheel 11. The drive wheel 10 is equipped with a servo motor 12 for driving its rotation. The inner side of the conveyor belt 2 is also provided with toothed grooves 3 for meshing transmission with the drive wheel 10 and the driven wheel 11. The conveyor belt 2 is a synchronous belt, and the toothed grooves 3 are arc-shaped grooves.

[0019] The mounting base 1 has an inner baffle 4 on the inside of the conveyor belt 2. The bottom of the packaging box is aligned with the inner baffle 4. When the folded packaging box is placed on the conveyor belt 2 by the operator or upstream equipment, the side of the packaging box is inserted into the toothed groove 3, and the bottom of the packaging box abuts against the inner baffle 4. Since the spacing of the toothed groove 3 is fixed, the front and back position of each packaging box in the conveying direction is forcibly limited. Due to the presence of the inner baffle 4, the bottoms of all packaging boxes are aligned laterally. Therefore, even if the thickness of the packaging boxes is uneven (thick bottom and thin opening), they will not form a fan-shaped misalignment after stacking.

[0020] The mounting base 1 has an output section 13 that is bent downward on the output end side of the conveyor belt 2, and the driven wheel 11 is disposed on the output section 13 of the mounting base 1.

[0021] The suction box assembly is located diagonally below the output end of the conveyor belt 2. The suction box assembly includes a suction box frame 15, a suction box plate 16 rotatably mounted on the suction box frame 15, and a suction box rod 17 rotatably mounted on the suction box plate 16. The suction box rod 17 is provided with at least one set of suction cups 18 for picking up the packaging box. The suction box plate 16 has a first degree of rotational freedom relative to the suction box frame 15, and the suction box rod 17 has a second degree of rotational freedom relative to the suction box plate 16, so that the suction cups 18 can approach the packaging box at multiple angles.

[0022] During operation, the servo motor 12 drives the conveyor belt 2 to move in a stepping motion, moving one tooth spacing each time. When the packaging box moves to the output end with the conveyor belt 2, the suction box assembly is activated, and the suction cup 18 picks up the packaging box at the front end, and then transfers it to the next station. Since the position of each packaging box is forcibly aligned, the suction cup 18 picks up the same position at the same height and angle each time, and the success rate of picking up reaches more than 99.9%.

[0023] Example 2: Based on Example 1, the mounting base 1 is equipped with two sets of parallel conveyor belts 2 for jointly clamping and supporting the packaging box. This method is suitable for packaging boxes with larger widths and can prevent the packaging box from tilting during transportation. At the same time, pressure rollers 14 are provided at the bend of the output section 13 of the mounting base 1 and at the drive wheel 10. The pressure rollers 14 press down on the conveyor belt 2 from the outside, so that the conveyor belt 2 always keeps in contact with the driven wheel 11 or the drive wheel 10 when bending and transitioning, preventing skipping teeth or slippage due to insufficient tension.

[0024] Example 3: Based on Example 1, the output section 13 of the mounting base 1 is provided with a vertical plate 21, and an upper baffle 22 is slidably provided on the vertical plate 21. An upper guide bar 23 is provided on the lower side of the upper baffle 22 along the conveying direction of the conveyor belt 2. The upper baffle 22 can slide up and down along the vertical plate 21 to adjust the height between the upper guide bar 23 and the conveyor belt 2 to adapt to the packaging boxes of different mines. The upper guide bar 23 gently presses down on the upper edge of the packaging box from above to prevent the packaging box from jumping upward due to vibration during the conveying process. In addition, a material level detection seat 24 is provided on the lower side of the upper baffle 22. A proximity sensor 25 is provided on the material level detection seat 24, and a sensing hook 26 is rotatably provided on the material level detection seat 24. When the packaging box moves with the conveyor belt 2 to the underside of the sensing hook 26, the packaging box pushes the sensing hook 26 to rotate. The proximity sensor 25 detects the rotation of the sensing hook 26 and outputs a signal. The control system determines that the packaging box is in place and then controls the suction box assembly to move. If there is no packaging box, the sensing hook 26 does not rotate, the proximity sensor 25 does not send a signal, and the suction box assembly does not move, thereby realizing the empty material detection and mistaken-proof function.

[0025] Example 4: Based on Example 1, the box assembly further includes a support main board 5, on which a sliding shaft 6 is provided. In this example, there are two sets of sliding shafts 6, each set having two sliding shafts 6. A slider 7 is provided on each sliding shaft 6, and each set of sliding shafts 6 is equipped with one slider 7. The mounting base 1 is fixed on the slider 7. The support main board 5 is also provided with adjusting screws 8 for driving the slider 7 to slide on the sliding shaft 6. There are two adjusting screws 8, which are respectively set between the two sliding shafts 6 in the same set and threadedly engaged with the slider 7 of that set. The support main board 5 is also provided with an adjusting shaft 9 for driving the adjusting screws 8 to rotate. The adjusting shaft 9 and the two adjusting screws 8 can be connected by a helical gear transmission. When the operator rotates the adjusting shaft 9, the slider 7 is driven to move along the sliding shaft 6 through the adjusting screws 8, thereby adjusting the position of the mounting base 1 and the conveyor belt 2. The mounting base 1 has an outer baffle 20 on the outside of the conveyor belt 2 via an adjusting block 19. The outer baffle 20 is provided at least at the output section 13 of the mounting base 1 and the bending part of the mounting base 1. The adjusting block 19 can adjust the distance between the outer baffle 20 and the outside of the conveyor belt 2, thereby accommodating packaging boxes with different opening widths and preventing the packaging boxes from tipping outward.

Claims

1. A packaging box conveying and feeding mechanism, characterized in that: The device includes a box storage assembly and a box suction assembly. The box storage assembly includes a mounting base (1) and a conveyor belt (2) on the mounting base (1). The conveyor belt (2) has multiple toothed grooves (3) continuously arranged on its conveying surface for independently supporting and positioning individual packaging boxes. The toothed grooves (3) are arranged at equal intervals along the length direction of the conveyor belt (2). When the packaging box is folded, its side is inserted into the toothed groove (3), so that the position of each packaging box in the conveying direction is forcibly limited to the corresponding toothed groove. The mounting base (1) has an inner baffle (4) on the inner side of the conveyor belt (2), and the bottom of the packaging box abuts and aligns with the inner baffle (4).

2. The packaging box conveying and feeding mechanism according to claim 1, characterized in that: The box assembly also includes a support main board (5), on which a sliding shaft (6) is provided, and a slider (7) is provided on the sliding shaft (6). The mounting base (1) is fixed on the slider (7). The support main board (5) is also provided with an adjusting screw (8) for driving the slider (7) to slide on the sliding shaft (6) and an adjusting shaft (9) for driving the adjusting screw (8) to rotate.

3. The packaging box conveying and feeding mechanism according to claim 1, characterized in that: The mounting base (1) is rotatably provided with a drive wheel (10) and a driven wheel (11). The conveyor belt (2) is wound around the drive wheel (10) and the driven wheel (11). The drive wheel (10) is equipped with a servo motor (12) for driving its rotation. The inner side of the conveyor belt (2) is also provided with toothed grooves (3) for meshing transmission with the drive wheel (10) and the driven wheel (11). The conveyor belt (2) is a synchronous belt, and the toothed grooves (3) are arc-shaped grooves or trapezoidal grooves.

4. The packaging box conveying and feeding mechanism according to claim 3, characterized in that: The mounting base (1) is bent downward on one side of the output end of the conveyor belt (2) and has an output section (13). The driven wheel (11) is located on the output section (13) of the mounting base (1). The mounting base (1) has pressure rollers (14) that abut against the conveyor belt (2) at its bend and at the driving wheel (10).

5. The packaging box conveying and feeding mechanism according to claim 1, characterized in that: The suction box assembly includes a suction box frame (15), a suction box plate (16) rotatably mounted on the suction box frame (15), a suction box rod (17) rotatably mounted on the suction box plate (16), and at least one set of suction cups (18) for picking up the packaging box on the suction box rod (17). The suction box plate (16) has a first degree of rotational freedom relative to the suction box frame (15), and the suction box rod (17) has a second degree of rotational freedom relative to the suction box plate (16), so that the suction cups (18) can approach the packaging box at multiple angles.

6. The packaging box conveying and feeding mechanism according to claim 1, characterized in that: The mounting base (1) is provided with two sets of parallel conveyor belts (2) for jointly clamping and supporting the packaging box.

7. The packaging box conveying and feeding mechanism according to claim 1, characterized in that: The mounting base (1) is provided with an outer baffle (20) on the outside of the conveyor belt (2) via an adjusting block (19). The outer baffle (20) is provided at least at the output section (13) of the mounting base (1) and at the bend of the mounting base (1).

8. The packaging box conveying and feeding mechanism according to claim 1, characterized in that: The output section (13) of the mounting base (1) is provided with a vertical plate (21), and an upper baffle (22) is slidably provided on the vertical plate (21). An upper guide bar (23) is provided on the lower side of the upper baffle (22) along the conveying direction of the conveyor belt (2).

9. The packaging box conveying and feeding mechanism according to claim 8, characterized in that: The upper baffle (22) is also provided with a material level detection seat (24) on the lower side. The material level detection seat (24) is provided with a proximity sensor (25). The material level detection seat (24) is also provided with a rotating sensing hook (26). When the packaging box passes under the sensing hook (26), it drives the sensing hook (26) to rotate. The proximity sensor (25) sends a signal according to the rotation of the sensing hook (26).

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