Film cutting mechanism for window patching machine

Abstract

The utility model relates to the technical field of window patching machines, and particularly discloses a film cutting mechanism for a window patching machine, which comprises cutting side plates, a film body and an adsorption roller, and the adsorption roller is mounted between the two cutting side plates; a cutting top plate is arranged between the two cutting side plates, and the cutting top plate is inserted into the shrinkage grooves in the cutting side plates. The flattening mechanism is arranged in the film body cutting device, after a film body is cut off, the driving mechanism can be started, the flattening mechanism is moved to the cut fracture position of the film body, then the flattening lifting mechanism in the flattening mechanism presses the pressing box on the film body, and then the corresponding air suction box is closed; the flattening power mechanism drives the flattening shaft to move, the film body is flattened, the film body is attached to the outer wall of the adsorption roller, the folded part of the film body is flattened, and the cut-off film body is flatly attached to the adsorption roller and can be flatly attached to the interior of a window in a paper box subsequently.

Description

Technical Field

[0001] The utility model belongs to the technical field of window pasting machines, and particularly relates to a film cutting mechanism for a window pasting machine. Background Art

[0002] A window pasting machine, also known as a carton window film pasting machine, is mainly used for pasting films on windowed cartons and consists of several steps such as film pasting, paper extraction, glue application, film cutting, and bonding. It can paste films on various windowed gift boxes, cosmetic boxes, tissue boxes, and windowed corrugated cartons.

[0003] In the film cutting mechanism of the wire pressing window pasting machine in the Chinese patent with the publication number CN204278608U, it is disclosed that: the film cutting mechanism of the window pasting machine includes a left cutting frame, a right cutting frame, and a cutting knife group. The cutting knife group includes a cutting upper knife and a cutting lower knife. The cutting lower knife is installed on the lower knife seat, and the lower knife seat is installed between the left cutting frame and the right cutting frame. The cutting upper knife can move relative to the cutting lower knife, and the cutting upper knife is connected to a driving mechanism; the utility model designs the cutting mechanism into a cutting mode in which only one end of the upper knife reciprocates by using the principle of scissors.

[0004] However, when cutting the film by using the above-mentioned cutting method similar to scissors, since the film has a certain length, the film at the first cut-off point is likely to sink under its own gravity, resulting in the folding of this part of the film. When such a film is subsequently pasted on the window of the carton, it will cause the window to not close tightly and the film pasted on the window to be uneven; therefore, the present application proposes a film cutting mechanism for a window pasting machine. Content of the Utility Model

[0005] The purpose of the utility model is to provide a film cutting mechanism for a window pasting machine to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a film cutting mechanism for a window pasting machine, including cutting side plates, a film body, and an adsorption roller. The adsorption roller is installed between the two cutting side plates;

[0007] A cutting top plate is arranged between the two cutting side plates. The cutting top plate is inserted into the contraction groove in the cutting side plate, and the cutting top plate is connected to a driving mechanism for driving it to rotate around the inner wall of the contraction groove;

[0008] A cutting knife lifting mechanism is arranged on the cutting top plate, and the cutting knife lifting mechanism is connected to an outer cutting knife;

[0009] A flattening mechanism is arranged on the cutting top plate. The flattening mechanism includes a flattening lifting mechanism and two flattening shafts. The flattening lifting mechanism is connected to a pressing box. Both flattening shafts are arranged inside the pressing box, and the flattening shafts are connected to a flattening power mechanism for driving them to move towards or away from the fracture opening direction;

[0010] An air suction cavity is arranged inside the adsorption roller. A number of through holes are arranged in the adsorption roller. The air suction cavity is connected to an air suction pump. A number of air suction boxes are arranged in the air suction cavity, and control valves are installed at the air suction boxes.

[0011] Preferably, a number of guide rollers are installed between the two cutting side plates, and the film body abuts against the outer wall of the guide rollers.

[0012] Preferably, the driving mechanism includes a driving motor, a small gear, and a half gear. The half gear is connected to the cutting top plate. The half gear is connected to the small gear through gear meshing transmission, and the small gear is connected to the output shaft of the driving motor.

[0013] Preferably, the outer wall of the cutting knife lifting mechanism is connected to the first mounting block, and the first mounting block cooperates with the mounting groove in the cutting top plate.

[0014] Preferably, a number of grooves are arranged inside the adsorption roller, and inner cutting knives are inserted into the grooves. When cutting the film body, the outer cutting knives are aligned with the inner cutting knives.

[0015] Preferably, the outer wall of the smoothing lifting mechanism is connected to the second mounting block, and the second mounting block cooperates with the mounting groove in the cutting top plate.

[0016] Preferably, when the smoothing mechanism smooths the break of the film body, the pressing box abuts against the outer wall of the film body, and at this time, the two smoothing shafts are respectively located on both sides of the break of the film body.

[0017] Preferably, the smoothing power mechanism includes a track groove, a first push-pull plate, and a second push-pull plate. The smoothing shafts are inserted into the track groove in the pressing box. The two smoothing shafts are respectively inserted into the first push-pull plate and the second push-pull plate, and the other ends of the first push-pull plate and the second push-pull plate are connected through a connecting rod. The connecting rod is inserted into the push-pull seat, and the push-pull seat is connected to the output end of the push-pull telescopic rod. The outer wall of the push-pull telescopic rod is connected to the cutting top plate through a bracket.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] First, the present utility model arranges inner cutting knives inside the grooves of the adsorption roller. Each part of the outer cutting knives moves synchronously under the action of the cutting knife lifting mechanism, and the cutting of the film body is carried out at the same time, and the break of the cut film body is neat.

[0020] Second, a flattening mechanism is provided inside the present utility model. After the film body is cut, the driving mechanism can be activated to move the flattening mechanism to the position of the cut of the film body. Subsequently, the flattening lifting mechanism inside the flattening mechanism presses the pressing box on the film body. Then, the corresponding suction box is closed, and the flattening power mechanism drives the flattening shaft to move, flattening the film body, making it fit against the outer wall of the adsorption roller, flattening the folded part, and enabling the cut film body to fit flatly on the adsorption roller, so that it can subsequently fit flatly into the window of the carton. Brief Description of the Drawings

[0021] Figure 1 Figure 1 is a schematic structural diagram of the film cutting mechanism for the window pasting machine in the present utility model.

[0022] Figure 2 Figure 2 is a schematic structural diagram of the film cutting mechanism for the window pasting machine in the present utility model.

[0023] Figure 3 In the present utility model Figure 2 Schematic structural diagram of part A.

[0024] Figure 4 Figure 3 is a schematic structural diagram of the outer cutting knife and the flattening mechanism of the present utility model.

[0025] Figure 5 In the present utility model Figure 4 Schematic structural diagram of part B.

[0026] In the figure: 1, cutting side plate; 2, film body; 3, adsorption roller; 4, cutting top plate; 401, first mounting block; 402, second mounting block; 5, contraction groove; 6, driving mechanism; 7, inner cutting knife; 8, outer cutting knife; 9, cutting knife lifting mechanism; 10, flattening mechanism; 1001, flattening lifting mechanism; 1002, pressing box; 1003, flattening shaft; 1004, track groove; 1005, first push-pull plate; 1006, second push-pull plate; 1007, push-pull seat; 1008, push-pull telescopic rod; 11, suction box. Detailed Embodiment

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Refer to Figures 1 - 5, a film cutting mechanism for a window pasting machine, comprising cutting side plates 1, a film body 2, and an adsorption roller 3. The adsorption roller 3 is installed between the two cutting side plates 1, and the film body 2 is attached to its outer surface through a guide roller. Specifically, several guide rollers are installed between the two cutting side plates 1, the film body 2 abuts against the outer wall of the guide roller, and the film body 2 moves along multiple guide rollers. During the rotation of the adsorption roller 3, the film body 2 is driven to rotate accordingly. The cut film body 2 is pasted at the window position of the paper box transported by the window pasting machine, and the window of the paper box is sealed through the film body 2.

[0029] Furthermore, a cutting top plate 4 is arranged between the two cutting side plates 1. The cutting top plate 4 is inserted into the contraction groove 5 in the cutting side plate 1. The cutting top plate 4 is connected to a driving mechanism 6 for driving it to rotate around the inner wall of the contraction groove 5. The driving mechanism 6 includes a driving motor, a small gear, and a semi-gear. The semi-gear is connected to the cutting top plate 4, and the semi-gear is connected to the small gear through gear meshing transmission. The small gear is connected to the output shaft of the driving motor. The driving mechanism 6 can drive the cutting top plate 4 to rotate, thereby adjusting the position of the cutting top plate 4, so that the outer cutting knife 8 on the cutting top plate 4 is aligned with the cutting point or the flattening mechanism 10 on the cutting top plate 4 is aligned with the break position of the film body 2 after being cut. In the former case, when the outer cutting knife 8 is aligned with the cutting point, the cutting knife lifting mechanism 9 inside it can cut the film body 2. In the latter case, when the flattening mechanism 10 is aligned with the break of the film body 2, the flattening mechanism 10 can flatten the film body 2 at the break to prevent it from folding. When it is subsequently pasted on the window of the paper box, the film body 2 can be smoothly pasted on the window of the paper box without wrinkling.

[0030] Furthermore, a cutting knife lifting mechanism 9 is arranged on the cutting top plate 4. Specifically, the outer wall of the cutting knife lifting mechanism 9 is connected to the first mounting block 401, and the first mounting block 401 cooperates with the mounting groove in the cutting top plate 4. The cutting knife lifting mechanism 9 is connected to the outer cutting knife 8. It should be noted that several grooves are arranged inside the adsorption roller 3, and the inner cutting knife 7 is inserted into the grooves. When cutting the film body 2, the outer cutting knife 8 is aligned with the inner cutting knife 7.

[0031] Further, a flattening mechanism 10 is provided on the cutting top plate 4. The flattening mechanism 10 includes a flattening lifting mechanism 1001 and two flattening shafts 1003. The flattening lifting mechanism 1001 is connected to the pressing box 1002. It should be noted that the outer wall of the flattening lifting mechanism 1001 is connected to the second mounting block 402, and the second mounting block 402 cooperates with the mounting groove in the cutting top plate 4. Both of the two flattening shafts 1003 are arranged inside the pressing box 1002. When the flattening mechanism 10 flattens the break of the film body 2, the pressing box 1002 abuts against the outer wall of the film body 2, and at this time, the two flattening shafts 1003 are respectively located on both sides of the break of the film body 2. The flattening shaft 1003 is connected to a flattening power mechanism for driving it to move towards the side close to the break. The flattening power mechanism includes an orbital groove 1004, a first push-pull plate 1005, and a second push-pull plate 1006. The flattening shaft 1003 is inserted into the orbital groove 1004 in the pressing box 1002. The two flattening shafts 1003 are respectively inserted into the first push-pull plate 1005 and the second push-pull plate 1006, and the other ends of the first push-pull plate 1005 and the second push-pull plate 1006 are connected by a connecting rod. The connecting rod is inserted into the push-pull seat 1007, and the push-pull seat 1007 is connected to the output end of the push-pull telescopic rod 1008. The outer wall of the push-pull telescopic rod 1008 is connected to the cutting top plate 4 through a bracket;

[0032] When the flattening power mechanism is started, it can drive the two flattening shafts 1003 to approach or move away from each other through the first push-pull plate 1005 and the second push-pull plate 1006. When flattening the break of the film body 2, the pressing box 1002 presses on the film body 2, and only the upper and lower ends of the pressing box 1002 press on the film body 2. The corresponding suction box 11 is closed. At this time, the film body 2 is pressed against the adsorption roller 3 due to the pressure of the pressing box 1002 and the extrusion and guiding of the guiding roller. At this time, the two flattening shafts 1003 approach each other, that is, move towards the side of the break, and the film body 2 can be flattened to prevent its break from folding up.

[0033] Further, an air suction cavity is arranged inside the adsorption roller 3. A number of through holes are arranged in the adsorption roller 3. The through holes are connected to the outside air and the air suction cavity. The air suction cavity is connected to an air suction pump. A number of suction boxes 11 are arranged in the air suction cavity. The multiple suction boxes 11 divide the through holes into multiple independent parts, and each part is connected to its respective through hole. The suction boxes 11 do not interact with each other. A control valve is installed at the suction box 11. After the pressing box 1002 in the flattening mechanism 10 presses on the film body 2 until the flattening shaft 1003 moves to the position of the break of the film body 2, the corresponding suction box 11 is closed. At this time, there is gas flow in the suction box 11, and the adsorption force on the film body 2 is lost. During this process, the area of the film body 2 that is not directly pressed by the pressing box 1002 can be flattened, that is, flattened by the flattening shaft 1003.

[0034] Working principle:

[0035] Under the action of the guiding roller, the film body 2 is wound around the adsorption drum 3. The air suction pump connected to the adsorption drum 3 will form an air flow from the through hole to the internal air suction cavity. Under the action of the air flow, the film body 2 is adsorbed on the outer wall of the adsorption drum 3 and rotates together with the adsorption drum 3. When it rotates to the cutting point position, the driving mechanism 6 adjusts the position of the outer cutting knife 8, and it moves towards the inner cutting knife 7 under the action of the cutting knife lifting mechanism 9 to cut off the film body 2.

[0036] After the film body 2 is cut off, the driving mechanism 6 is started to move the flattening mechanism 10 to the break position of the cut film body 2. Subsequently, the flattening lifting mechanism 1001 in the flattening mechanism 10 presses the pressing box 1002 on the film body 2. Then, the corresponding air suction box 11 is closed, and the flattening power mechanism drives the flattening shaft 1003 to move to flatten the film body 2, making it fit with the outer wall of the adsorption drum 3 and flattening the folded part. After flattening, the corresponding air suction box 11 is opened, and the air flow adsorbs the film body 2 at the position of the adsorption drum 3. Then, the cut film body 2 rotates together with the adsorption drum 3 and finally fits at the window position of the paper box.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A film cutting mechanism for a window pasting machine, comprising a cutting side plate (1), a film body (2), and an adsorption roller (3), characterized in that, The adsorption roller (3) is installed between two cutting side plates (1); A cutting top plate (4) is arranged between the two cutting side plates (1). The cutting top plate (4) is inserted into a contraction groove (5) in the cutting side plate (1), and the cutting top plate (4) is connected to a driving mechanism (6) for driving it to rotate around the inner wall of the contraction groove (5); A cutting knife lifting mechanism (9) is arranged on the cutting top plate (4), and the cutting knife lifting mechanism (9) is connected to an outer cutting knife (8); A flattening mechanism (10) is arranged on the cutting top plate (4). The flattening mechanism (10) includes a flattening lifting mechanism (1001) and two flattening shafts (1003). The flattening lifting mechanism (1001) is connected to a pressing box (1002). Both of the two flattening shafts (1003) are arranged inside the pressing box (1002), and the flattening shaft (1003) is connected to a flattening power mechanism for driving it to move towards or away from the fracture; An air suction cavity is arranged inside the adsorption roller (3). A number of through holes are arranged in the adsorption roller (3). The air suction cavity is connected to an air suction pump. A number of air suction boxes (11) are arranged in the air suction cavity, and a control valve is installed at the air suction box (11).

2. The film cutting mechanism for a window pasting machine according to claim 1, characterized in that, A number of guide rollers are installed between the two cutting side plates (1), and the film body (2) abuts against the outer wall of the guide rollers.

3. A film cutting mechanism for a window pasting machine according to claim 1, characterized in that, The driving mechanism (6) includes a driving motor, a small gear, and a semi-gear. The semi-gear is connected to the cutting top plate (4). The semi-gear is connected to the small gear through gear meshing transmission, and the small gear is connected to the output shaft of the driving motor.

4. A film cutting mechanism for a window pasting machine according to claim 1, characterized in that, The outer wall of the cutting knife lifting mechanism (9) is connected to a first mounting block (401), and the first mounting block (401) cooperates with the mounting groove in the cutting top plate (4).

5. A film cutting mechanism for a window pasting machine according to claim 4, characterized in that, A number of grooves are arranged inside the adsorption roller (3). Inner cutting knives (7) are inserted into the grooves. When cutting the film body (2), the outer cutting knife (8) is aligned with the inner cutting knife (7).

6. The film cutting mechanism for a window pasting machine according to claim 1, characterized in that, The outer wall of the flattening lifting mechanism (1001) is connected to a second mounting block (402), and the second mounting block (402) cooperates with the mounting groove in the cutting top plate (4).

7. The film cutting mechanism for a window pasting machine according to claim 6, characterized in that, When the flattening mechanism (10) flattens the fracture of the film body (2), the pressing box (1002) abuts against the outer wall of the film body (2), and at this time, the two flattening shafts (1003) are respectively located on both sides of the fracture of the film body (2).

8. A film cutting mechanism for a window pasting machine according to claim 1, characterized in that, The flattening power mechanism includes a track groove (1004), a first push-pull plate (1005), and a second push-pull plate (1006). The flattening shaft (1003) is inserted into the track groove (1004) in the pressing box (1002). The two flattening shafts (1003) are respectively inserted into the first push-pull plate (1005) and the second push-pull plate (1006). The other ends of the first push-pull plate (1005) and the second push-pull plate (1006) are connected by a connecting rod. The connecting rod is inserted into a push-pull seat (1007). The push-pull seat (1007) is connected to the output end of a push-pull telescopic rod (1008), and the outer wall of the push-pull telescopic rod (1008) is connected to the cutting top plate (4) through a bracket.

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