Film slitting machine

Abstract

This invention discloses a film slitting machine, comprising an unwinding mechanism, a cleaning mechanism, an inspection mechanism, and a winding mechanism arranged sequentially. The winding mechanism includes a fixed box and a movable support. The top of the fixed box is equipped with a top frame, and the movable support is slidably mounted on its bottom. A pulley is installed at the bottom of the movable support, and a movable cylinder is connected to the movable support. A turntable is located on the side of the fixed box facing the movable support, and a rotating motor is connected to the center of the turntable. Four winding shafts are evenly arranged in a ring on the turntable, divided into two groups: one group for finished film rolls and the other group for rewinding rolls. Two winding shafts from the same group are symmetrically arranged on both sides of the turntable. By setting up a cleaning and inspection mechanism before the winding mechanism, the invention cleans and inspects the film during slitting, avoiding the production of defective film rolls. The rewinding shafts on both sides of the turntable automatically rewind and collect defective film portions, preventing the production of substandard products and improving product quality.

Description

[Technical Field]

[0001] This invention relates to the technical field of thin film processing, and in particular to the technical field of thin film slitting machines. [Background Technology]

[0002] Plastic wrap is a type of plastic packaging product, usually made from ethylene through a polymerization reaction. It is widely used in food packaging in households, supermarkets, hotels, restaurants, and industrial production.

[0003] In film production, large rolls of film need to be slit into smaller rolls for packaging and sale. During production, the film easily attracts dust, and its surface may develop defects such as holes, black spots, crystal points, scratches, and blemishes. Existing film slitting machines can only cut and slit the film; they cannot inspect or process these defects, resulting in substandard products and reduced product quality. [Summary of the Invention]

[0004] The purpose of this invention is to solve the problems in the prior art and to propose a film slitting machine that enables cleaning and inspection of the film during slitting, thereby improving product quality.

[0005] To achieve the above objectives, this invention proposes a film slitting machine, comprising an unwinding mechanism, a cleaning mechanism, an inspection mechanism, and a rewinding mechanism arranged sequentially. The inspection mechanism includes an inspection box containing an upper inspection bracket and a lower inspection bracket arranged sequentially. The upper inspection bracket is located above the film and houses a first CCD camera assembly. A first inspection lamp holder is located directly below the upper inspection bracket, and a first lighting assembly is mounted on the first inspection lamp holder, located below the film. The lower inspection bracket is located below the film and houses a second CCD camera assembly. A second inspection lamp holder is located directly above the lower inspection bracket, and a second lighting assembly is mounted on the second inspection lamp holder, located above the film. The rewinding mechanism includes a fixed box and a movable bracket. A top frame is located on the top of the fixed box, and the movable bracket is slidably mounted on... At the bottom of the movable support, pulleys are installed. The movable support is connected to a moving cylinder. A turntable is located on the side of the fixed box facing the movable support. A rotating motor is connected to the center of the turntable. Four winding shafts are evenly arranged in a ring on the turntable. The four winding shafts are divided into two groups: one group is the finished winding shaft, and the other group is the recovery winding shaft. Two winding shafts in the same group are symmetrically arranged on both sides of the turntable. A connecting rod is provided on the side of the winding shaft near the fixed box. The connecting rod is rotatably mounted on the turntable. A locking rod is provided on the side of the winding shaft near the movable support. A mounting base is rotatably mounted on the side of the movable support facing the fixed box. The mounting base has a locking groove that matches the locking rod. A rotating gear is provided on the connecting rod. A rotating motor is installed inside the fixed box. The rotating motor is connected to a shifting cylinder. An auxiliary gear is connected to the output end of the rotating motor. The auxiliary gear meshes with the rotating gear.

[0006] Preferably, an anti-static mechanism is provided between the unwinding mechanism and the cleaning mechanism. The unwinding mechanism includes an unwinding frame with an unwinding roller. The cleaning mechanism includes dust collection hoods located on both sides of the film. Dust collection hoods have dust collection ports on their surfaces. The dust collection hoods are connected to a negative pressure mechanism. A dust-adhesive roller is also provided between the dust collection hoods and the inspection mechanism.

[0007] Preferably, a cutting bracket is installed on the top frame, and a cutting mechanism is installed at the output end of the cutting bracket.

[0008] Preferably, the cutting mechanism includes a cutting track on which a cutting blade is slidably mounted.

[0009] Preferably, the upper side of the turntable is a winding station, the lower side is a feeding station, the inner side of the turntable near the inspection mechanism is a feeding station, and the outer side of the turntable is a recycling station. A central shaft is located at the center of the turntable, and an insertion block is located at one end of the central shaft near the movable support. A shaft seat is rotatably mounted on the movable support, and the shaft seat has an insertion groove that matches the insertion block. An inlet groove is connected to the outer side of the shaft seat; the inlet groove is a tapered groove that gradually decreases in size towards the shaft seat. A suspension bracket is rotatably mounted on the central shaft, and a feeding slide rail is installed at the bottom of the suspension bracket. A feeding scraper is slidably mounted on the feeding slide rail. A discharge chute is opened at the position of the movable support corresponding to the feeding station, and a feeding chute is opened at the position of the movable support corresponding to the feeding station. A feeding platform is located on one side of the feeding chute, and a paper tube is placed on the feeding platform. An arc-shaped base matching the paper tube is located inside the feeding chute. A pushing cylinder is located on the feeding platform, and an arc-shaped push plate is installed at the output end of the pushing cylinder, abutting against the outer end of the paper tube.

[0010] Preferably, the winding shaft is an air-expanding shaft, and the end of the air-expanding shaft located inside the fixed box is provided with an air inlet / outlet. The fixed box is provided with an air pump, which is connected to an air inlet pipe. An air inlet is provided on the air inlet pipe, and an air inlet is connected to an air cylinder. The air inlet is positioned directly opposite the air inlet / outlet located at the loading station. The fixed box is also provided with a pressing block, which is connected to a pressing cylinder. The pressing block is positioned directly opposite the air inlet / outlet located at the unloading station.

[0011] Preferably, a pressure roller is provided on the outer side of the winding shaft. The pressure roller is rotatably mounted on the mounting frame. An adjusting rod is provided on the side of the mounting frame away from the pressure roller. One end of the adjusting rod passes through the fixed bracket and is provided with a limiting block. A compression spring is provided between the limiting block and the fixed bracket.

[0012] The beneficial effects of this invention are as follows: By setting up a cleaning mechanism and an inspection mechanism before the winding mechanism, the film is cleaned and inspected during slitting, avoiding the production of film rolls with defects. Recycle rollers are provided on both sides of the turntable, and defective film portions are automatically wound up and recycled, preventing the production of substandard products and improving product quality. Automatic roll changing is achieved through the rotation of the turntable, allowing for automatic roll changing without stopping the machine. When defects are detected, the machine automatically switches to recycling mode, improving production efficiency. New paper rolls are automatically installed and fixed via the feeding platform, resulting in a high degree of automation.

[0013] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. [Attached Image Description]

[0014] Figure 1 This is a structural schematic diagram of Example 1;

[0015] Figure 2 This is a schematic diagram of the winding mechanism of the present invention;

[0016] Figure 3 This is a schematic diagram of the auxiliary gear installation of the present invention;

[0017] Figure 4 This is a schematic diagram of the recycling and rewinding of the present invention;

[0018] Figure 5 This is a schematic diagram of the feeding process of the present invention;

[0019] Figure 6 This is a schematic diagram of the movable support of the present invention;

[0020] Figure 7 This is a schematic diagram of the push plate structure of the present invention;

[0021] Figure 8 This is a schematic diagram of the structure of Example 2.

[0022] In the diagram: 1-Inspection box, 2-Fixed box, 3-Moving bracket, 4-Top frame, 5-Turntable, 6-Rewinding shaft, 7-Central shaft, 8-Feeding platform, 9-Pressure roller, 11-Upper inspection bracket, 12-First inspection light holder, 13-Lower inspection bracket, 14-Second inspection light holder, 21-Inflation nozzle, 22-Pressing block, 31-Pulley, 32-Mounting base, 33-Shaft seat, 34-Discharge chute, 35-Feeding chute, 41-Cutting bracket, 42-Cutting mechanism, 61-Connecting rod, 62-Clamping rod, 63-Rotating gear, 64-Auxiliary gear, 71-Suspension bracket, 72-Discharge slide rail, 73-Discharge scraper, 81-Pushing cylinder, 82-Push plate, 91-Mounting bracket, 92-Adjusting rod, 93-Limiting block, 94-Fixed bracket.

Detailed Implementation Methods

[0023] Example 1:

[0024] See Figures 1 to 7A film slitting machine includes an unwinding mechanism, a cleaning mechanism, an inspection mechanism, and a rewinding mechanism arranged sequentially. The inspection mechanism includes an inspection box 1, within which are arranged an upper inspection bracket 11 and a lower inspection bracket 13. The upper inspection bracket 11 is located above the film and is equipped with a first CCD camera group. A first inspection lamp holder 12 is located directly below the upper inspection bracket 11, and a first lighting lamp group is mounted on the first inspection lamp holder 12. The first lighting lamp group is located below the film. The lower inspection bracket 13 is located below the film and is equipped with a second CCD camera group. A second inspection lamp holder 14 is located directly above the lower inspection bracket 13, and a second lighting lamp group is mounted on the second inspection lamp holder 14. The second lighting lamp group is located above the film. The winding mechanism includes a fixed box 2 and a movable support 3. A top frame 4 is provided on the top of the fixed box 2. The movable support 3 is slidably mounted on its bottom, and a pulley 31 is installed at the bottom of the movable support 3. A movable cylinder is connected to the movable support 3. A turntable 5 is provided on the side of the fixed box 2 facing the movable support 3. A rotating motor is connected to the center of the turntable 5. Four winding shafts 6 are evenly arranged in a ring on the turntable 5. The four winding shafts 6 are divided into two groups: one group is the finished winding shaft, and the other group is the recovery winding shaft. Two winding shafts 6 in the same group are symmetrically arranged on both sides of the turntable 5. A connecting rod 61 is provided on the side of the winding shaft 6 closest to the fixed box 2. The connecting rod 61 is rotatably mounted on the turntable 5. A locking rod 62 is provided on the side of the winding shaft 6 closest to the movable support 3. A mounting base 32 is rotatably mounted on the side facing the fixed box 2. The mounting base 32 has a slot that matches the locking rod 62. A rotating gear 63 is provided on the connecting rod 61. A rotary motor is installed inside the fixed box 2. The rotary motor is connected to a displacement cylinder. An auxiliary gear 64 is connected to the output end of the rotary motor. The auxiliary gear 64 meshes with the rotating gear 63. An ion air bar is provided between the unwinding mechanism and the cleaning mechanism. The unwinding mechanism includes an unwinding frame with an unwinding roller. The cleaning mechanism includes dust collection hoods located on both sides of the film. Dust collection hoods have dust collection ports on their surfaces. A negative pressure mechanism is connected to the dust collection hoods. A dust-adhesive roller is also provided between the dust collection hoods and the inspection mechanism. A cutting bracket 41 is mounted on the top frame 4. A cutting machine is installed at the output end of the cutting bracket 41. The cutting mechanism 42 includes a cutting track with a cutting blade slidably mounted on it. The upper side of the turntable 5 is a winding station, the lower side is a feeding station, the inner side of the turntable 5 near the inspection mechanism is a feeding station, and the outer side is a recycling station. A central shaft 7 is located at the center of the turntable 5. An insertion block is located at one end of the central shaft 7 near the movable support 3. A bearing seat 33 is rotatably mounted on the movable support 3, and the bearing seat 33 has an insertion groove that matches the insertion block. An inlet groove is connected to the outer side of the bearing seat 33; the inlet groove is a tapered groove that gradually decreases in size towards the bearing seat 33. A suspension bracket 71 is rotatably mounted on the central shaft 7, and a feeding slide rail 72 is mounted at the bottom of the suspension bracket 71. A feeding scraper 73 is slidably mounted on the feeding slide rail 72.A discharge chute 34 is provided at the position corresponding to the unloading station of the movable support 3, and a loading chute 35 is provided at the position corresponding to the loading station of the movable support 3. A loading platform 8 is provided on one side of the loading chute 35, and a paper tube is placed on the loading platform 8. An arc-shaped base matching the paper tube is provided inside the loading chute 35. A pushing cylinder 81 is provided on the loading platform 8, and an arc-shaped push plate 82 is installed at the output end of the pushing cylinder 81. The push plate 82 abuts against the outer end of the paper tube. The winding shaft 6 is an air expansion shaft, and an air inflation / deflation nozzle is provided at the end of the air expansion shaft located inside the fixed box 2. An air pump is provided inside the fixed box 2, and the air pump is connected to an air inflation pipe. An inflation nozzle 21 is provided on the inflation tube, and the inflation nozzle 21 is connected to an inflation cylinder. The inflation nozzle 21 is positioned opposite the inflation / deflation nozzle located at the loading station. A pressing block 22 is also provided inside the fixed box 2, and the pressing block 22 is connected to a pressing cylinder. The pressing block 22 is positioned opposite the inflation / deflation nozzle located at the unloading station. A pressure roller 9 is provided on the outer side of the winding shaft 6. The pressure roller 9 is rotatably mounted on the mounting frame 91. An adjusting rod 92 is provided on the side of the mounting frame 91 away from the pressure roller 9. One end of the adjusting rod 92 passes through the fixed bracket 94 and is provided with a limiting block 93. A compression spring is provided between the limiting block 93 and the fixed bracket 94.

[0025] Example 2:

[0026] See Figure 8A film slitting machine includes an unwinding mechanism, a cleaning mechanism, an inspection mechanism, and a rewinding mechanism arranged sequentially. The inspection mechanism includes an inspection box 1, within which are arranged an upper inspection bracket 11 and a lower inspection bracket 13. The upper inspection bracket 11 is located above the film and is equipped with a first CCD camera group. A first inspection lamp holder 12 is located directly below the upper inspection bracket 11, and a first lighting group is mounted on the first inspection lamp holder 12. The first lighting group is located below the film. The lower inspection bracket 13 is located below the film and is equipped with a second CCD camera group. A second inspection lamp holder 14 is located directly above the lower inspection bracket 13, and a second lighting group is mounted on the second inspection lamp holder 14. Located above the film, the winding mechanism includes a fixed box 2 and a movable support 3. A top frame 4 is provided on the top of the fixed box 2. The movable support 3 is slidably mounted on its bottom, and a pulley 31 is installed on its bottom. The movable support 3 is connected to a movable cylinder. A turntable 5 is provided on the side of the fixed box 2 facing the movable support 3. A rotating motor is connected to the center of the turntable 5. Four winding shafts 6 are evenly arranged in a ring on the turntable 5. The four winding shafts 6 are divided into two groups: one group for finished windings and the other group for rewinding. Two winding shafts 6 in the same group are symmetrically arranged on both sides of the turntable 5. A connecting rod 61 is provided on the side of the winding shaft 6 closest to the fixed box 2. The connecting rod 61 is rotatably mounted on the turntable 5. A locking rod 62 is provided. A mounting base 32 is rotatably mounted on the side of the movable bracket 3 facing the fixed box 2. The mounting base 32 has a locking groove that matches the locking rod 62. A rotating gear 63 is provided on the connecting rod 61. A rotary motor is installed inside the fixed box 2, and the rotary motor is connected to a displacement cylinder. An auxiliary gear 64 is connected to the output end of the rotary motor, and the auxiliary gear 64 meshes with the rotating gear 63. The upper side of the turntable 5 is the winding station, the lower side of the turntable 5 is the unloading station, the inner side of the turntable 5 near the inspection mechanism is the loading station, and the outer side of the turntable 5 is the recycling station. A central shaft 7 is provided at the center of the turntable 5, and an insertion block is provided at one end of the central shaft 7 near the movable bracket 3. A shaft seat 33 is rotatably mounted on the movable bracket 3, and the shaft seat 33 has a corresponding insertion block. The insert slot matches the block, and the outer side of the shaft seat 33 is connected to the guide slot. The guide slot is a tapered slot that gradually decreases in size towards the shaft seat 33. The suspension bracket 71 is rotatably mounted on the central shaft 7. The bottom of the suspension bracket 71 is equipped with a feeding slide rail 72. The feeding scraper 73 is slidably mounted on the feeding slide rail 72. The moving bracket 3 is provided with a discharge slot 34 at the position corresponding to the feeding station. The moving bracket 3 is provided with a feeding slot 35 at the position corresponding to the feeding station. A feeding platform 8 is provided on one side of the feeding slot 35. A paper tube is provided on the feeding platform 8. An arc-shaped base matching the paper tube is provided inside the feeding slot 35. A pushing cylinder 81 is provided on the feeding platform 8. An arc-shaped push plate 82 is installed at the output end of the pushing cylinder 81. The push plate 82 abuts against the outer end of the paper tube.

[0027] Working process of this invention:

[0028] In the operation of this invention, the film is cleaned by the cleaning mechanism and then enters the inspection mechanism, which inspects the film for defects. The winding shaft 6 at the winding station rotates under the drive of a rotary motor to wind up the finished film. After winding is completed, the rotary motor stops, the shifting cylinder drives the auxiliary gear 64 to move upwards, disengaging it, and the moving bracket 3 moves to the left. Then, the turntable 5 rotates 90 degrees, rotating the finished film roll on the lower side to the loading station. The pushing cylinder 81 pushes the paper tube onto the finished film roll, and the inflation cylinder inserts the inflation nozzle. In the inflation / deflation nozzle, the finished roll at this station is inflated, the paper tube is fixed, and then the turntable continues to rotate 90 degrees, rotating the finished roll with the paper tube installed to the winding station. The auxiliary gear re-engages with the rotating gear, and then drives the cutting mechanism to cut the film. The rotary motor at the winding station drives the finished roll to rotate and begin winding. The rotary motor at the unloading station drives the winding shaft to rotate and wind up the excess film. After winding is completed, the unloading scraper 73 pushes the finished film roll out from the discharge chute 34 and slides out from the unloading track to complete the unloading.

[0029] When the inspection agency finds defects, turntable 5 rotates 90 degrees to rotate the recycling roll to the winding station. Then, the film is cut, and the recycling roll winds up the defective film. The feeding station feeds the film. After the defective part of the film is wound up, the turntable rotates 90 degrees again to rotate the new winding roll to the winding station for winding. The half-wound film roll exits from the discharge chute on the lower side and enters the recycling track.

[0030] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A film slitting machine, characterized in that: The system includes a winding mechanism, a cleaning mechanism, an inspection mechanism, and a winding mechanism arranged sequentially. The inspection mechanism includes an inspection box (1), which contains an upper inspection bracket (11) and a lower inspection bracket (13). The upper inspection bracket (11) is located above the film and has a first CCD camera assembly. A first inspection lamp holder (12) is located directly below the upper inspection bracket (11) and has a first lighting assembly installed on it. The first lighting assembly is located below the film. The frame (13) is located below the film. The lower inspection frame (13) is equipped with a second CCD camera group. The second inspection light frame (14) is located directly above the lower inspection frame (13). The second inspection light frame (14) is equipped with a second lighting group. The second lighting group is located above the film. The winding mechanism includes a fixed box (2) and a movable frame (3). The top of the fixed box (2) is equipped with a top frame (4). The movable frame (3) is slidably installed at the bottom of the movable frame (3). The bottom of the movable frame (3) is equipped with a pulley (31). The movable support (3) is connected to a movable cylinder. The fixed box (2) is provided with a turntable (5) on the side facing the movable support (3). A rotating motor is connected to the center of the turntable (5). Four winding shafts (6) are evenly arranged in a ring on the turntable (5). The four winding shafts (6) are divided into two groups: one group is the finished winding shaft and the other group is the recycling winding shaft. The two winding shafts (6) in the same group are symmetrically arranged on both sides of the turntable (5). A connecting rod (61) is provided on the side of the winding shaft (6) near the fixed box (2). The connecting rod (61) is rotatably mounted on the turntable. On the tray (5), the take-up shaft (6) is provided with a locking rod (62) on the side near the moving bracket (3). The moving bracket (3) is rotatably mounted with a mounting base (32) on the side facing the fixed box (2). The mounting base (32) is provided with a slot that matches the locking rod (62). The connecting rod (61) is provided with a rotating gear (63). A rotating motor is installed in the fixed box (2). The rotating motor is connected to a displacement cylinder. The output end of the rotating motor is connected to an auxiliary gear (64). The auxiliary gear (64) meshes with the rotating gear (63).

2. The film slitting machine as described in claim 1, characterized in that: An antistatic mechanism is provided between the unwinding mechanism and the cleaning mechanism. The unwinding mechanism includes an unwinding frame with an unwinding roller. The cleaning mechanism includes dust collection hoods located on both sides of the film. Dust collection hoods have dust collection ports on their surfaces. The dust collection hoods are connected to a negative pressure mechanism. A dust-adhesive roller is also provided between the dust collection hoods and the inspection mechanism.

3. The film slitting machine as described in claim 2, characterized in that: The static electricity removal mechanism is an ion air bar.

4. The film slitting machine as described in claim 1, characterized in that: A cutting bracket (41) is installed on the top frame (4), and a cutting mechanism (42) is installed at the output end of the cutting bracket (41).

5. The film slitting machine as described in claim 4, characterized in that: The cutting mechanism (42) includes a cutting track on which a cutting blade is slidably mounted.

6. The film slitting machine as described in claim 1, characterized in that: The upper side of the turntable (5) is the winding station, the lower side of the turntable (5) is the unloading station, the inner side of the turntable (5) near the inspection mechanism is the loading station, and the outer side of the turntable (5) is the recycling station. The turntable (5) has a central shaft (7) at its center. An insertion block is provided at one end of the central shaft (7) near the movable bracket (3). A shaft seat (33) is rotatably mounted on the movable bracket (3). The shaft seat (33) has an insertion groove that matches the insertion block. An inlet groove is connected to the outer side of the shaft seat (33). The inlet groove is a tapered groove that gradually decreases in size towards the shaft seat (33). A suspension bracket (71) is rotatably mounted on the central shaft (7). The bottom of the frame (71) is equipped with a feeding slide rail (72), and a feeding scraper (73) is slidably installed on the feeding slide rail (72). The moving bracket (3) is provided with a discharge trough (34) at the position corresponding to the feeding station. The moving bracket (3) is provided with a feeding trough (35) at the position corresponding to the feeding station. A feeding platform (8) is provided on one side of the feeding trough (35). A paper tube is provided on the feeding platform (8). An arc-shaped base matching the paper tube is provided in the feeding trough (35). A pushing cylinder (81) is provided on the feeding platform (8). An arc-shaped push plate (82) is installed at the output end of the pushing cylinder (81). The push plate (82) abuts against the outer end of the paper tube.

7. The film slitting machine according to any one of claims 1 to 6, characterized in that: The winding shaft (6) is an air expansion shaft. The air expansion shaft is located inside the fixed box (2) and has an air inlet / outlet nozzle at its end. The fixed box (2) is equipped with an air pump, which is connected to an air inlet pipe. An air inlet (21) is provided on the air inlet pipe. An air inlet (21) is connected to an air cylinder. The air inlet (21) is positioned opposite the air inlet / outlet located at the loading station. The fixed box (2) is also equipped with a pressing block (22), which is connected to a pressing cylinder. The pressing block (22) is positioned opposite the air inlet / outlet located at the unloading station.

8. The film slitting machine as described in claim 1, characterized in that: The outer side of the winding shaft (6) is provided with a pressure roller (9), which is rotatably mounted on the mounting frame (91). The mounting frame (91) is provided with an adjusting rod (92) on the side away from the pressure roller (9). One end of the adjusting rod (92) passes through the fixed bracket (94) and is provided with a limiting block (93). A clamping spring is provided between the limiting block (93) and the fixed bracket (94).

Images