Novel paper folding mechanism of full-automatic carton sealing machine

Abstract

According to the novel paper folding mechanism of the full-automatic carton sealing machine, a feeding path for feeding a carton from front to back is reserved, an inclined pressing rod is arranged on the first side edge of the feeding path, the inclined pressing rod inclines downwards from front to back, and a cover plate to be folded on the side edge of the fed carton is preliminarily pressed and folded downwards along a pre-pressing crease to form a swing cover; a blocking piece is further arranged on the first side edge of the feeding path, the blocking piece is arranged behind the inclined pressing rod, the inner side face of the blocking piece inclines forwards and downwards, and a cover plate to be folded on the side edge of the feeding carton is further pressed and folded downwards along a folding mark. The rearmost end of the inner side face of the blocking piece is closer to the second side edge, opposite to the first side edge, of the feeding path than the inclined pressing rod. On the basis that the inclined pressing rod preliminarily presses and folds a cover plate to be folded downwards along a pre-pressing fold on the cover plate to be folded of the carton to form a rocking cover, the rearmost end of the inner side face of the blocking piece is closer to the second side edge of the feeding path on the other side of the carton feeding path than the inclined pressing rod, and the rocking cover formed through pressing and folding reaches the expected width.

Description

Technical Field

[0001] This utility model relates to the field of cardboard packaging, and in particular to a novel paper folding mechanism for a fully automatic carton sealing machine. Background Technology

[0002] Before sealing the carton, the fully automatic carton sealing machine uses a slanted pressure bar to fold the side flap of the carton downwards along the pre-crease. When the slanted pressure bar first folds the flap downwards, a certain distance needs to be left between the slanted pressure bar and the pre-crease to ensure smooth feeding of the carton. Therefore, the specific folding position of the slanted pressure bar needs to be slightly off-center from the pre-crease. Consequently, the resulting flap may not reach the expected width and may not adhere properly to the adhesive tape on the flap, causing the carton to fail to seal. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a new type of folding mechanism for a fully automatic carton sealing machine, which can achieve the expected width of the flap formed by folding.

[0004] To solve the above-mentioned technical problems, this utility model provides a novel folding mechanism for a fully automatic carton sealing machine. It provides a feeding path for the cartons to be fed from front to back. A slanted pressure bar is provided on the first side of the feeding path, tilting downwards from front to back. This bar initially folds the cover plate of the carton on that side downwards along a pre-pressed crease to form a flap. The key feature is that a baffle plate is also provided on the first side of the feeding path, located behind the slanted pressure bar. The inner side of the baffle plate tilts forward and downwards, further folding the cover plate of the carton on that side downwards along the crease. At the height of the pre-pressed crease, the last end of the inner side of the baffle plate is closer than the slanted pressure bar to the second side of the feeding path opposite to the first side.

[0005] Furthermore, a clamping device is provided on the second side of the feeding path to limit the position of the carton.

[0006] Furthermore, the inner surface of the baffle is curved and arches inward.

[0007] Furthermore, a limiting block is provided above the feeding path to prevent the carton from lifting upwards, and the limiting block is located after the inclined pressure bar.

[0008] Furthermore, the upper part of the baffle is installed on the side of the limiting block, and the baffle specifically presses the cover plate to be folded on the side of the feeding carton downward along the crease from the lower inner side.

[0009] Furthermore, an outer baffle is provided on the first side of the front-to-back feeding path of the carton. The outer baffle is located after the inclined pressure bar and before the baffle plate, and its inner side blocks the outer side of the flap for limiting.

[0010] Furthermore, an auxiliary pressure roller is provided on the first side of the front-to-back feeding path of the carton. The auxiliary pressure roller is vertically placed behind the baffle and presses the flap against the cover to be covered on that side of the carton.

[0011] The novel folding mechanism of the fully automatic carton sealing machine provided by this utility model has the following beneficial effects: Based on the pre-pressing crease on the carton cover plate along the inclined pressure bar, the first side of the carton feeding path has already initially folded the cover plate downwards into a flap. The carton can then smoothly feed from the front end to the rear end of the inner side of the baffle. The rear end of the inner side of the baffle does not need to leave a distance from the pre-pressing crease; it can also further fold the cover plate downwards along the crease. Therefore, at the height of the pre-pressing crease, the rear end of the inner side of the baffle is designed to be closer to the second side of the feeding path on the other side of the carton feeding path than the inclined pressure bar. The specific folding position of the baffle is relatively closer to or even consistent with the pre-pressing crease position, thereby ensuring that the folded flap achieves the expected width. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a new type of folding mechanism for a fully automatic carton sealing machine;

[0013] Figure 2 This is a magnified partial schematic diagram of the baffle in the origami mechanism;

[0014] Figure 3 This is a schematic diagram showing the baffle along the feeding direction of the folding mechanism;

[0015] Figure 4 This is a schematic diagram of a cardboard box to be sealed;

[0016] Figure 5 This is a partial top view of the diagonal pressure bar and the cardboard box;

[0017] Figure 6 It is a partial top view of the limiting block, the baffle, and the carton.

[0018] Attached reference numerals: 1. Diagonal pressure bar; 2. Carton; 21. Cover to be opened; 22. Hinged lid; 23. Adhesive tape; 24. Pre-press crease; 3. Limiting block; 4. Baffle; 41. Front end of baffle; 42. Rear end of baffle; 43. Inner side of baffle; 5. Outer baffle strip; 6. Auxiliary pressure roller. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to specific embodiments.

[0020] The new folding mechanism of the fully automatic carton sealing machine, such as Figure 1 As shown, the carton 2 is fed from front to back. The folding mechanism presses the cover plate along the pre-press crease 24 on the side of the carton 2 to form a flap 22 of the expected width, and finally presses the flap 22 to the desired width. Figure 4The adhesive tape 23 on this side of the carton is used to attach the cover 21 to be sealed. The process is described in detail below.

[0021] The folding mechanism has a feeding path for the cardboard box 2 to be fed from front to back. The feeding path has two opposing sides. A clamping device (not shown in the attached figure) limits the cardboard box from the second side of the feeding path. This section describes the first side of the feeding path in detail. The frame of the folding mechanism (not shown in the attached figure) has a diagonal pressure bar 1 at the front, which slopes downwards from front to back. The frame also has an outer stop bar 5 in the front-to-back direction, mounted on the frame and located on the first side of the feeding path, behind the diagonal pressure bar 1. The outer stop bar 5 has an inverted "L"-shaped cross-section, with its upper inner surface facing the feeding path of the cardboard box 2 and its lower inner surface facing the side of the cardboard box 2. A limit block 3 is located in the middle of the frame. A baffle 4 is mounted on the side of the limit block 3 near the first side of the feeding path. The upper part of the baffle 4 is mounted on the side of the limit block 3 as shown in the attached figure. Figure 2 and Figure 3 As shown, the lower inner surface 43 of the baffle 4 is an arc surface, which arches inward and tilts forward and downward.

[0022] The cardboard box 2 enters the folding mechanism from front to back. The folding cover plate on the side of the cardboard box 2 is fed from the first side of the feeding path. The folding cover plate first passes the inclined pressure bar 1 at the front of this side. The inclined pressure bar 1 initially folds the folding cover plate downwards along the pre-press crease 24 to form a flap 22. To facilitate smooth feeding of the cardboard box, the inclined pressure bar 1... Figure 5 As shown, a certain distance is left between it and the pre-press crease 24 of the carton 2, so the specific position of the initial pressing is slightly off the outside of the carton 2 from the pre-press crease 24. Then the carton 2 is fed to the outer stop 5, and the inner side of the outer stop 5 blocks the outside of the carton 2, specifically the outside of the initially pressed flap 22, limiting the carton 2 and the flap 22, and pressing the flap 22 to the angle of the fold; then the carton 2 is fed to below the limiting block 3, as shown. Figure 3 As shown, the restricted block 3 is limited and will not lift upwards. Figure 3 and Figure 4 As shown, a baffle 4 is installed on the side of the limiting block 3. The inner surface 43 of the lower part of the baffle 4 is an arc surface, arching inward and tilting forward and downward. The inner surface 43 gradually approaches the clamping device on the second side of the feeding path from front to back. The carton 2 can be smoothly fed from the front end 41 to the rear end 42 of the inner surface 43 of the baffle 4. Therefore, the rear end 42 of the inner surface 43 of the baffle 4 does not need to leave a distance between it and the pre-press crease 24. Therefore, at the height of the pre-press crease 24, such as Figure 5 and Figure 6As shown, the rearmost end 42 of the inner side 43 of the baffle is designed as a clamping device closer to the second side of the feeding path of the carton 2 than the inclined pressure bar 1. The flap 22, which is initially folded by the inclined pressure bar 1 on the carton 2, is fed from the frontmost end 41 of the inner side 43 of the lower part of the baffle 4 to the rearmost end 42 of the inner side 43 of the baffle 4. This rearmost end 42 further folds the flap 22 along the pre-folded crease 24. The specific position of the further fold is relatively closer to the position of the pre-folded crease 24 or even coincides with the position of the pre-folded crease 24. Therefore, the width of the flap 22 is correspondingly longer, achieving the expected result. Finally, as Figure 1 As shown, multiple auxiliary pressure rollers 6 (only one is shown in the attached diagram) are arranged vertically side by side along the first side of the feed path after the baffle 4. The flap 22, reaching the expected width, is fed to the auxiliary pressure roller 6, which presses the flap 22 to the desired width. Figure 4 Apply adhesive tape 23 to the side of the carton 2 to make the flap 22 stick to the cover 21.

[0023] The above description is merely an embodiment of the present invention and does not limit the scope of patent protection. Any non-substantial changes or substitutions made by those skilled in the art based on the present invention will still fall within the scope of patent protection.

Claims

1. A novel folding mechanism for a fully automatic carton sealing machine, comprising a feeding path for feeding cartons (2) from front to back, wherein a slanted pressure bar (1) is provided on the first side of the feeding path, the slanted pressure bar (1) being inclined downward from front to back, and preliminarily folding the flap to be folded on the side of the carton (2) along the pre-press crease (24) into a flap (22), characterized in that: A baffle (4) is also provided on the first side of the feeding path. The baffle (4) is located after the inclined pressure bar (1). The inner side (43) of the baffle (4) is inclined forward and downward, and further presses down on the folded cover plate of the feeding carton (2) along the fold line. At the height of the pre-pressed fold line (24), the last end of the inner side (43) of the baffle (4) is closer to the second side of the feeding path opposite to the first side than the inclined pressure bar (1).

2. The novel paper folding mechanism of the fully automatic carton sealing machine according to claim 1, characterized in that: A clamping device is provided on the second side of the feeding path to limit the position of the carton (2).

3. The novel paper folding mechanism of the fully automatic carton sealing machine according to claim 1, characterized in that: The inner surface (43) of the baffle (4) is an arc surface that arches inward.

4. The novel paper folding mechanism of the fully automatic carton sealing machine according to claim 1, characterized in that: A limiting block (3) is provided above the feeding path to prevent the carton (2) from being lifted upwards. The limiting block (3) is located after the inclined pressure bar (1).

5. The novel paper folding mechanism of the fully automatic carton sealing machine according to claim 4, characterized in that: The upper part of the baffle (4) is installed on the side of the limiting block (3), and the baffle (4) specifically uses the lower inner side (43) to further press and fold the flap (22).

6. The novel paper folding mechanism of the fully automatic carton sealing machine according to claim 1, characterized in that: An outer baffle (5) is provided on the first side of the front-to-back feeding path of the carton (2). The outer baffle (5) is located after the inclined pressure bar (1) and in front of the baffle (4). Its inner side (43) blocks the outer side of the flap (22) for limiting.

7. The novel paper folding mechanism of the fully automatic carton sealing machine according to claim 1, characterized in that: An auxiliary pressure roller (6) is provided on the first side of the front-to-back feeding path of the carton (2). The auxiliary pressure roller (6) is placed vertically behind the baffle (4) and presses the flap (22) against the cover (21) to be covered on that side of the carton (2).

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