A paper box forming machine and folding device thereof

Abstract

The present invention discloses a paper box forming machine and a folding device thereof, which relates to the technical field of paper box manufacturing, and comprises a frame, an upper pressing plate and a lower pressing plate movably mounted on the frame and arranged relatively, the frame is provided with a side guard mechanism at positions corresponding to the left and right sides of the lower pressing plate, and a flap mechanism is provided at positions corresponding to the front and rear sides of the lower pressing plate, the side guard mechanism cooperates with the descending lower pressing plate to complete the folding of the long sides of the two sides of the paper box, the flap mechanism cooperates with the descending lower pressing plate to complete the first step of folding the short sides of the two sides of the paper box, the folding plate is used to fold the short sides of the two sides of the paper box into narrow sides when the inner side surface of the folding plate is adjusted to be flush with the inner side surface of the connecting plate, and the upper surface of the connecting plate and the inner side surface of the folding plate cooperate to fold the short sides of the two sides of the paper box into wide sides when the inner side surface of the folding plate is adjusted to have a step difference with the inner side surface of the connecting plate. The present invention has the advantage of good practicality.

Description

Technical Field

[0001] The invention relates to the technical field of paper box manufacturing, and in particular to a paper box forming machine and a folding device thereof. Background Art

[0002] Existing cartons such as Figure 6 and Fig. 9 The following are wide-edge and narrow-edge paper boxes. The definition of wide edge and narrow edge can be found in Figure 6 and Fig. 9 The size at s1 in the middle, the small size is the narrow side, and the large size is the wide side. The current carton forming machines divide the two types of cartons into two devices for production. The two devices each have a corresponding folding mechanism to fold the cartons, but this greatly increases the user's production cost. It is urgent to develop a carton forming machine and its folding device that can be used for both types of cartons. Summary of the invention

[0003] In order to overcome the shortcomings of the background technology, the present invention provides a paper box forming machine and a folding device thereof with good practicality.

[0004] The technical solution adopted by the present invention is: a folding device of a paper box forming machine, comprising a frame, an upper pressing plate and a lower pressing plate movably mounted on the frame and arranged opposite to each other, the frame is provided with a side guard mechanism at positions corresponding to the left and right sides of the lower pressing plate, and a flap mechanism is provided at positions corresponding to the front and rear sides of the lower pressing plate, the side guard mechanism cooperates with the descending lower pressing plate to complete the folding of the long sides of the two sides of the paper box, the flap mechanism cooperates with the descending lower pressing plate to complete the first step of folding the short sides of the two sides of the paper box, and the flap mechanism comprises:

[0005] A base, which is slidably mounted on the frame and located at the front and rear sides of the lower pressing plate;

[0006] A rotating shaft, which is rotatably mounted on both ends of the base;

[0007] A connecting plate, which is fixedly connected to the rotating shafts at both ends and is eccentrically arranged with respect to the rotating shafts;

[0008] A folding plate, which is mounted on the connecting plate;

[0009] The folding plate is used to fold the short sides of the paper box into narrow sides when the inner side surface of the folding plate is adjusted to be flush with the inner side surface of the connecting plate. When the inner side surface of the folding plate is adjusted to have a step difference with the inner side surface of the connecting plate, the upper surface of the connecting plate and the inner side surface of the folding plate cooperate to fold the short sides of the paper box into wide sides.

[0010] The retaining edge mechanism comprises:

[0011] A first baffle plate, which is slidably mounted on two sides of the base;

[0012] a fourth driving member, mounted on the base;

[0013] The output end of the fourth driving member is connected to the first baffle and drives the first baffles on both sides to move toward and away from each other. The fourth driving member adopts a motor and a ball screw pair, and the two ends of the screw are provided with threads with opposite rotation directions.

[0014] The first baffle is provided with a guide column for folding the ear plates at both sides of the paper box, the upper end of the guide column is provided with a second inclined surface, and the guide column is higher than the first baffle.

[0015] A second baffle plate connected to the first baffle plate is disposed between the two first baffle plates on each side, and the second baffle plate has the same height as the first baffle plate; and first inclined surfaces are disposed on upper ends of the first baffle plate and the second baffle plate.

[0016] The frame is provided with a plurality of first drive components for driving the upper pressing plate and the lower pressing plate to rise and fall, and the first drive components include:

[0017] A first driving member, which is mounted on the frame and has a first gear at its output end;

[0018] A first rack, which is vertically slidably mounted on the frame and meshes with the first gear;

[0019] The end of the first rack located at the top is fixedly connected to the upper pressing plate, and the end of the first rack located at the bottom is fixedly connected to the lower pressing plate.

[0020] The base is provided with a second driving assembly for driving the rotating shaft to rotate, and the second driving assembly includes:

[0021] a second driving member, which is mounted on the base;

[0022] a second rack vertically mounted at an output end of the second driving member;

[0023] The second gear is mounted on the rotating shaft in a linkage manner and meshes with the second rack.

[0024] The frame is also provided with a third driving assembly connected to the base and driving the base to move toward and away from each other. The third driving assembly adopts a motor and a ball screw pair, and the two ends of the screw are provided with threads with opposite rotation directions.

[0025] A plurality of suction cups are arranged on the upper pressing plate and the lower pressing plate.

[0026] The present invention also provides another technical solution, a paper box forming machine, including a feeding mechanism, a folding mechanism, a feeding mechanism and a material taking mechanism installed on a frame, and a folding device as the above-mentioned paper box forming machine is provided between the feeding mechanism and the material taking mechanism.

[0027] The beneficial effects of the present invention are as follows: the technical scheme realizes the forming of wide and narrow edges through the upper flap mechanism, and when the inner side surface of the folding plate is adjusted to be flush with the inner side surface of the connecting plate, the rotating shaft drives the folding plate on the connecting plate to flip 180 degrees around the center of the rotating shaft, and the folding plate changes from a vertical upward state to a vertical downward state. This flipping process can fold the short sides of the carton into narrow sides, and when the inner side surface of the folding plate 44 is adjusted to have a step difference with the inner side surface of the connecting plate 43, the rotating shaft drives the folding plate on the connecting plate to flip 180 degrees around the center of the rotating shaft, and the inner side surface of the folding plate 44 acts on the inner wall of the carton, and the upper surface of the connecting plate 43 acts on the short sides of the carton. The upper surface of the connecting plate and the inner side surface of the folding plate form a 90° angle, which can shape the wide sides. During the production process, it is only necessary to replace the folding plates of different thicknesses to complete the change of production lines for different types of cartons, which has the advantage of good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a paper box forming machine according to an embodiment of the present invention.

[0029] Figure 2 It is a schematic diagram of the structure of the folding device of the paper box forming machine.

[0030] Figure 3 It is a side view of the side guard mechanism and the flap mechanism.

[0031] Figure 4 It is a schematic diagram of the structure of the flap mechanism used for folding wide-edge paper boxes.

[0032] Figure 5 It is a schematic diagram of the structure of the flap mechanism used for folding narrow-edge paper boxes.

[0033] Figure 6 Schematic diagram of the initial process of folding a narrow-edged paper box.

[0034] Figure 7 Schematic diagram of the intermediate process of folding a narrow-edge paper box.

[0035] Figure 8 Schematic diagram of the later process of folding narrow-edge paper boxes.

[0036] Fig. 9 It is a schematic diagram of the structure of a wide-edge paper box. DETAILED DESCRIPTION

[0037] The embodiments of the present invention are further described below in conjunction with the accompanying drawings:

[0038] As shown in the figure, a folding device of a paper box forming machine includes a frame 1, an upper pressing plate 2 and a lower pressing plate 3 movably mounted on the frame 1 and arranged opposite to each other, the frame 1 is provided with a side guard mechanism at positions corresponding to the left and right sides of the lower pressing plate 3, and a flap mechanism is provided at positions corresponding to the front and rear sides of the lower pressing plate 3, the side guard mechanism cooperates with the descending lower pressing plate 3 to complete the folding of the long sides of the paper box, the flap mechanism cooperates with the descending lower pressing plate 3 to complete the first step of folding the short sides of the paper box, and the flap mechanism includes:

[0039] A base 41 is slidably mounted on the frame 1 and located at the front and rear sides of the lower pressing plate 3;

[0040] A rotating shaft 42, which is rotatably mounted on both ends of the base 41;

[0041] A connecting plate 43, which is fixedly connected to the rotating shaft 42 at both ends and is eccentrically arranged with respect to the rotating shaft 42;

[0042] A folding plate 44, which is installed on the connecting plate 43;

[0043] The folding plate 44 is used to fold the short sides of the paper box into narrow sides when the inner side surface of the folding plate 44 is adjusted to be flush with the inner side surface of the connecting plate 43. When the inner side surface of the folding plate 44 is adjusted to have a step difference with the inner side surface of the connecting plate 43, the upper surface of the connecting plate 43 and the inner side surface of the folding plate 44 cooperate to fold the short sides of the paper box into wide sides. The technical solution realizes the forming of wide and narrow sides through the flap mechanism. When the inner side surface of the folding plate is adjusted to be flush with the inner side surface of the connecting plate, the rotating shaft drives the folding plate on the connecting plate to flip 180 degrees around the center of the rotating shaft, and the folding plate changes from a vertical upward state to a vertical downward state. The folding plate 44 is in a state of being turned over, and this turning process can turn the short sides of the carton into narrow sides. When the inner side surface of the folding plate 44 is adjusted to have a step difference with the inner side surface of the connecting plate 43, the rotating shaft drives the folding plate on the connecting plate to turn 180 degrees around the center of the rotating shaft. The inner side surface of the folding plate 44 acts on the inner wall of the carton, and the upper surface of the connecting plate 43 acts on the short sides of the carton. The upper surface of the connecting plate and the inner side surface of the folding plate form a 90° angle, which can shape the wide sides. During the production process, it is only necessary to replace the folding plates of different thicknesses to complete the change of production lines for different types of cartons, which has the advantage of good practicality.

[0044] The wide edge of the paper box is as follows Figure 6 , Figure 7 as well as Figure 8 As shown in the figure, the carton enters the folding mechanism as follows Figure 6 In the middle a3 state, s1 and s7 are wide sides, s2 and s4 are the side panels of the short sides of the carton, s3 is the bottom panel of the carton, s5 is the ear panel, and s6 is the folding edge;

[0045] The narrow edge of the paper box is as follows Fig. 9As shown, the structure is roughly the same as the paper box with wide edges, the difference is that there is no wide edge of S1 and S7.

[0046] The retaining edge mechanism comprises:

[0047] A first baffle 51, which is slidably mounted on two sides of the base 41;

[0048] a fourth driving member 52, which is mounted on the base 41;

[0049] The output end of the fourth driving member 52 is connected to the first baffle 51 and drives the first baffles 51 on both sides to move toward and away from each other. The fourth driving member 52 adopts a motor and a ball screw pair and the two ends of the screw are provided with threads with opposite rotation directions. The fourth driving member can change the distance between the first baffles, so as to adapt to paper boxes of different sizes.

[0050] The first baffle plate 51 is provided with a guide column 53 for folding the ear plates on both sides of the paper box. The upper end of the guide column 53 is provided with a second inclined surface 54. The guide column 53 is higher than the first baffle plate 51. When the paper box is descending, the ear plates will touch the guide column and bend along the crease.

[0051] A second baffle 55 connected to the first baffle 51 is provided between the two first baffles 51 on each side, and the second baffle 55 has the same height as the first baffle 51; the first baffle 51 and the second baffle 55 are provided with a first inclined surface 56 at the upper ends, and the first baffle and the second baffle are used to touch the side wall plate s4 of the short side of the paper box to bend it.

[0052] The frame 1 is provided with a plurality of first drive components 6 for driving the upper pressing plate 2 and the lower pressing plate 3 to rise and fall, and the first drive components 6 include:

[0053] A first driving member 61, which is mounted on the frame 1 and has a first gear 63 at its output end;

[0054] A first rack 62, which is vertically slidably mounted on the frame 1 and meshes with the first gear 63;

[0055] The end of the first rack 62 located at the top is fixedly connected to the upper pressure plate 2, and the end of the first rack 62 located at the bottom is fixedly connected to the lower pressure plate 3. The first driving member adopts a motor, which drives the first gear to rotate, and the first gear drives the first rack to rise and fall vertically. The upper pressure plate and the lower pressure plate have the same movement mode and are opposite to each other up and down.

[0056] The base 41 is provided with a second driving assembly 7 which drives the rotating shaft 42 to rotate. The second driving assembly 7 includes:

[0057] A second driving member 71, which is mounted on the base 41;

[0058] A second rack 72, which is vertically mounted at the output end of the second driving member 71;

[0059] The second gear 73 is mounted on the rotating shaft 42 in a linkage manner and meshes with the second rack 72 .

[0060] The frame 1 is also provided with a third driving assembly 8 connected to the base 41 and driving the base 41 to move toward and away from each other. The third driving assembly 8 uses a motor and a ball screw pair, and both ends of the screw are provided with threads with opposite rotation directions. The second driving member uses a cylinder, an oil cylinder or a linear motor, which drives the second rack to move up and down, and the second rack drives the second gear and the rotating shaft to rotate through meshing cooperation;

[0061] The third driving assembly can change the distance between the bases 41 to adapt to cartons of different sizes.

[0062] A plurality of suction cups 9 are disposed on the upper pressing plate 2 and the lower pressing plate 3, and the suction cups adsorb the bottom plate of the paper box to achieve a better molding effect.

[0063] The present invention also provides another technical solution, a paper box forming machine, comprising a feeding mechanism 10, a folding mechanism 11, a feeding mechanism 12 and a picking mechanism 13 installed on a frame 1, and a folding device as the above-mentioned paper box forming machine is arranged between the feeding mechanism 12 and the picking mechanism 13, which has all the beneficial effects of the above-mentioned folding mechanism. In addition, the feeding mechanism, the folding mechanism, the feeding mechanism 12 and the picking mechanism 13 are all prior arts, and no further description is given here. The folding mechanism realizes Figure 6 The folding in state a1 and state a2 is then calibrated by the feeding mechanism and sent into the folding mechanism.

[0064] The folding process of the paper box in this technical solution is as follows:

[0065] Step 1: The carton in state a3 is placed on the lower pressing plate, and the suction cup on the lower pressing plate absorbs the carton and drives the carton to descend;

[0066] Step 2: During the descent process, the ear plate s5 of the paper box first touches the guide column 53, and the ear plate s5 is bent along the crease to become an A4 state;

[0067] Step 3: The lower pressing plate continues to descend, and the side plates s4 on both sides of the paper box are contacted by the first inclined surfaces 56 at the upper ends of the first baffle plate 51 and the second baffle plate 55, and the side plates s4 are bent along the creases to become the a5 state;

[0068] Step 4: The lower pressing plate continues to descend, and the upper edge of the folding plate that has not started to move will contact the side plate s8 of the paper box, causing it to bend into the a6 state;

[0069] Step 5: When the lower pressing plate reaches the bottom, the side plate s4, the ear plate s5 and the side plate s8 will change to the a7 state;

[0070] Step 6: The rotating shaft drives the folding plate to rotate, driving the side plate s2 to bend, so that it becomes a8, a9 and a10 states in sequence. At this time, the upper surface of the connecting plate will contact the wide side s1 and shape it. In addition, at the same time, the two ends of the wide side s7 will also be contacted by the connecting plate, which also has the effect of pressing and forming. If it is a paper box with narrow edges, there is no need for the connecting plate to press and form. The side plate s2 is directly driven by the folding plate to bend it into Figure 7 appearance;

[0071] Step 7, the rotating shaft drives the folding plate to retreat and reset, and the upper pressing plate descends to press and form the four folding edges s6, and finally becomes the state of a11;

[0072] Step 8: The upper pressing plate returns to its original position, the lower pressing plate drives the formed carton to rise, and then the picking mechanism takes the carton away, and the lower pressing plate waits for the feeding mechanism to place the next unformed carton.

[0073] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0074] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0075] Technical personnel should note that although the present invention has been described according to the above specific implementation methods, the inventive concept of the present invention is not limited to this invention, and any modification using the inventive concept will be included in the scope of protection of this patent.

Claims

1. A folding device for a carton forming machine, characterized in that: The invention comprises a frame (1), an upper pressing plate (2) and a lower pressing plate (3) movably mounted on the frame (1) and arranged opposite to each other, the frame (1) being provided with a side guard mechanism at positions corresponding to the left and right sides of the lower pressing plate (3) and a flap mechanism at positions corresponding to the front and rear sides of the lower pressing plate (3), the side guard mechanism cooperates with the descending lower pressing plate (3) to complete the folding of the long sides of the two sides of the paper box, the flap mechanism cooperates with the descending lower pressing plate (3) to complete the first step of folding the short sides of the two sides of the paper box, and the flap mechanism comprises: A base (41) is slidably mounted on the frame (1) and is located at the front and rear sides of the lower pressing plate (3); A rotating shaft (42) rotatably mounted on both ends of the base (41); A connecting plate (43) fixedly connected to the rotating shafts (42) at both ends and eccentrically arranged with respect to the rotating shafts (42); A folding plate (44) mounted on the connecting plate (43); The folding plate (44) is used to fold the short sides of the paper box into narrow sides when the inner side surface of the folding plate (44) is adjusted to be flush with the inner side surface of the connecting plate (43). When the inner side surface of the folding plate (44) is adjusted to have a step difference with the inner side surface of the connecting plate (43), the upper surface of the connecting plate (43) and the inner side surface of the folding plate (44) cooperate to fold the short sides of the paper box into wide sides.

2. The folding device of the carton forming machine according to claim 1, characterized in that: The retaining edge mechanism comprises: A first baffle (51) slidably mounted on two sides of the base (41); a fourth driving member (52) mounted on the base (41); The output end of the fourth driving member (52) is connected to the first baffle (51) and drives the first baffles (51) on both sides to move towards and away from each other. The fourth driving member (52) adopts a motor and a ball screw pair, and the two ends of the screw are provided with threads with opposite rotation directions.

3. The folding device of the carton forming machine according to claim 2, characterized in that: A guide column (53) for folding the ear plates on both sides of the paper box is mounted on the first baffle plate (51), a second inclined surface (54) is provided at the upper end of the guide column (53), and the guide column (53) is higher than the first baffle plate (51).

4. The folding device of the carton forming machine according to claim 2, characterized in that: A second baffle (55) connected to the first baffle (51) is provided between the two first baffles (51) on each side, and the second baffle (55) has the same height as the first baffle (51); and a first inclined surface (56) is provided at the upper ends of the first baffle (51) and the second baffle (55).

5. The folding device of the carton forming machine according to claim 1, characterized in that: The frame (1) is provided with a plurality of first drive components (6) for driving the upper pressing plate (2) and the lower pressing plate (3) to move upward and downward, and the first drive components (6) include: A first driving member (61), which is mounted on the frame (1) and has a first gear (63) at its output end; a first rack (62) which is vertically slidably mounted on the frame (1) and meshes with the first gear (63); The end of the first rack (62) located at the top is fixedly connected to the upper pressing plate (2), and the end of the first rack (62) located at the bottom is fixedly connected to the lower pressing plate (3).

6. The folding device of the carton forming machine according to claim 2, characterized in that: The base (41) is provided with a second driving assembly (7) for driving the rotating shaft (42) to rotate, and the second driving assembly (7) comprises: A second driving member (71) mounted on the base (41); A second rack (72) vertically mounted on an output end of the second driving member (71); A second gear (73) is mounted on the rotating shaft (42) in a linkage manner and meshes with the second rack (72).

7. The folding device of the carton forming machine according to claim 1, characterized in that: The frame (1) is also provided with a third drive assembly (8) connected to the base (41) and driving the base (41) to move toward and away from each other. The third drive assembly (8) uses a motor and a ball screw pair, and both ends of the screw are provided with threads with opposite rotation directions.

8. The folding device of the carton forming machine according to claim 1, characterized in that: A plurality of suction cups (9) are provided on the upper pressing plate (2) and the lower pressing plate (3).

9. A paper box forming machine, comprising a feeding mechanism (10), a folding mechanism (11), a feeding mechanism (12) and a material taking mechanism (13) mounted on a frame (1), characterized in that: A folding device for a paper box forming machine according to any one of claims 1 to 8 is provided between the feeding mechanism (12) and the taking mechanism (13).

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