A cutting and crushing system for PC film production

Abstract

A cutting and crushing system for PC film production includes a cutting device and an edge material crushing device located below the discharge end of the cutting device. The cutting device includes a conveyor table and a pair of cutting components installed above the conveyor table. The cutting components include a movable seat, a blade holder fixing seat, a blade holder, and a blade holder adjusting motor. The advantages of this invention are: during the cutting process, the blade holder can move up and down intermittently with the blade, avoiding prolonged work on the same part of the blade and extending the blade's service life; the blade holder fixing seat can be flipped, allowing blade replacement without stopping the machine; after the edge material enters the crushing box, it first passes through the transverse extrusion feeding roller to create multiple vertical indentations, and then enters the longitudinal extrusion feeding roller to create multiple transverse indentations, forming crisscrossing indentations. When passing through the crushing roller, the crushing rod can easily break up the edge material from each indentation, resulting in uniform particle size of the crushed material.

Description

Technical Field

[0001] This utility model relates to the technical field of PC film production equipment, specifically to a cutting and crushing system for PC film production. Background Technology

[0002] PC film forming involves an extruder melting and extruded material, a calender pressing the material into a sheet while simultaneously cooling and shaping it, and a cutting device cutting off the edge material on both sides before winding it up. PC film is a thin product, and during cutting, it is always in close contact with a small area of ​​the blade. Over time, the blade generates frictional heat, causing severe wear at the contact points and affecting its lifespan. Furthermore, part of the blade needs to extend under the PC film during operation, and since the blade height is fixed, blade replacement requires stopping the machine. Most of the cut edge material is wound up by the winding device and then crushed for reuse. This requires workers to periodically remove the wound edge material, replace the roll, and rewind the edge material, increasing workload and wasting labor. Existing crushers also use high-speed rotating crushing rollers to break up the PC material, resulting in inconsistent particle sizes and easily producing fine powder, which affects secondary mixing and reuse. Utility Model Content

[0003] The purpose of this invention is to address the above-mentioned shortcomings by providing a cutting and crushing system for PC film production.

[0004] This utility model includes a cutting device and an edge crushing device located below the discharge end of the cutting device. The cutting device includes a conveyor table and a pair of cutting components installed on the conveyor table. The cutting components include a movable seat, a blade holder fixed seat, a blade holder, and a blade holder adjusting motor. A guide shaft is provided on the conveyor table. The movable seat is slidably installed on the guide shaft. The distance between the two movable seats of the pair of cutting components is adjusted by a bidirectional screw. The blade holder fixed seat is angularly adjustable and installed on the movable seat. The blade holder adjusting motor is installed on the blade holder fixed seat and drives the blade holder to move up and down on the blade holder fixed seat. A blade is detachably installed on the blade holder. The edge material crushing device includes a crusher frame, on which a crushed material collection trough is provided. A pair of crushing boxes are symmetrically and adjustablely installed on the top of the crushed material collection trough. Inside the crushing boxes, from top to bottom, there are transverse extrusion feeding rollers, longitudinal extrusion feeding rollers, and crushing rollers. The surface of the transverse extrusion feeding rollers is provided with a set of annular indentation blades. The surface of the longitudinal extrusion feeding rollers is provided with a set of transverse indentation blades in annular array. The surface of the crushing rollers is provided with multiple sets of crushing rods. The top of the crushing box is provided with an openable cover, and the cover is provided with a feed guide groove. The crushing box is provided with a crushing motor that drives the transverse extrusion feeding rollers, longitudinal extrusion feeding rollers, and crushing rollers to rotate.

[0005] The conveyor platform located on both sides of the blade is equipped with support rollers, and the feed end and discharge end of the conveyor platform are equipped with pressure rollers. There are two guide shafts, and the movable seat is provided with two guide holes that mate with the guide shafts. The movable seat is installed on the two guide shafts at an angle. The two nuts of the bidirectional lead screw are each equipped with an adjusting seat, and the movable seat can be detachably connected to the adjusting seat.

[0006] The top end of the tool holder fixing seat is rotatably mounted on the movable seat via a pin, and the tool holder fixing seat is provided with a locking screw that is fixed to the movable seat.

[0007] The tool holder mounting base is equipped with a lifting rod, the tool holder is installed at the bottom end of the lifting rod, and a rack is provided on one side of the lifting rod. The output shaft of the tool holder adjusting motor is equipped with a gear that meshes with the rack. The lifting rod is driven to move up and down through the meshing of the gear and the rack. The top end of the tool holder is equipped with a connector, and the bottom end of the lifting rod is equipped with a slot that mates with the connector. A locking pin is provided on the slot. The tool holder is inserted into the slot through the connector and locked by the locking pin.

[0008] The transverse extrusion feed roller consists of a first fixed roller and a first movable roller, and the longitudinal extrusion feed roller consists of a second fixed roller and a second movable roller. A set of annular indentation blades is located on the first movable roller, and a set of transverse indentation blades is located on the second movable roller. The first fixed roller and the first movable roller, the second fixed roller and the second movable roller, and the first fixed roller and the second fixed roller are all connected by gear transmission. The second fixed roller and the crushing roller are connected by gearbox transmission.

[0009] The crushing box is provided with a first movable roller mounting groove and a second movable roller mounting groove, and a sliding block is provided in both the first movable roller mounting groove and the second movable roller mounting groove. The first movable roller and the second movable roller are respectively mounted on the corresponding sliding block. A sliding block tensioning spring is provided in both the first movable roller mounting groove and the second movable roller mounting groove. The first movable roller mounting groove and the second movable roller mounting groove are arranged in parallel and are both inclined.

[0010] The feed guide chute is an arc-shaped structure with its opening tilted to one side.

[0011] The advantages of this invention are: during the cutting process, the blade holder can move up and down intermittently with the blade, avoiding prolonged work on the same part of the blade and extending the blade's service life; the blade holder fixing seat can be flipped, allowing blade replacement without stopping the machine; after the edge material enters the crushing box, it first passes through the transverse extrusion feeding roller to create multiple vertical indentations, and then enters the longitudinal extrusion feeding roller to create multiple transverse indentations, forming crisscrossing indentations. When passing through the crushing roller, the crushing rod can easily break up the edge material from each indentation, resulting in uniform particle size of the crushed material. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the cutting device.

[0014] Figure 3 yes Figure 2 A partially enlarged structural diagram.

[0015] Figure 4 This is a schematic diagram of the exploded structure of the cutting component.

[0016] Figure 5 This is a side view structural diagram of the cutting device.

[0017] Figure 6 This is a schematic diagram of the edge material crushing device.

[0018] Figure 7 This is a schematic diagram of the crushing box structure.

[0019] Figure 8 This is a schematic diagram of the internal structure of the crushing chamber. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the utility model. Furthermore, if terms such as "first" or "second" appear in the description of this utility model, they are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] As shown in the attached drawings, this utility model includes a cutting device 3 and an edge material crushing device 4 located below the discharge end of the cutting device 3. The cutting device 3 includes a conveying table 20 and a pair of cutting components installed above the conveying table 20. The cutting components include a movable seat 21, a blade holder fixing seat 22, a blade holder 23, and a blade holder adjusting motor 24. A guide shaft 26 is provided on the conveying table 20. The movable seat 21 is slidably installed on the guide shaft 26. The distance between the two movable seats 21 of the pair of cutting components is adjusted by a bidirectional lead screw 27. The blade holder fixing seat 22 is angularly adjustable and installed on the movable seat 21. The blade holder adjusting motor 24 is installed on the blade holder fixing seat 22 and drives the blade holder 23 to move up and down on the blade holder fixing seat 22. A blade 28 is detachably installed on the blade holder 23.

[0025] Structure and working principle of cutting device 3: The distance between the two cutting components is adjusted by the bidirectional lead screw 27 according to the width of the PC film. The blade holder adjustment motor 24 is a servo motor. During operation, the blade holder adjustment motor 24 controls the blade holder 23 to move up and down intermittently, thereby changing the position of the blade 28, avoiding the blade 28 from working in the same position for a long time and extending its service life.

[0026] The blade holder 22 can be rotated. When the blade 28 needs to be replaced, simply rotate the blade holder 22 to a certain angle, allowing the blade 28 to be quickly removed from the PC film. After replacement, lowering the blade holder 22 allows the blade 28 to be inserted into the working position. During insertion, the tip of the blade 28 contacts the PC film first, allowing it to easily penetrate under the PC film. Replacement can be performed without stopping the machine. In this case, the blade holder 23 is equipped with a blade mounting slot, and two locking screws are provided on one side of the blade mounting slot to secure the blade 28.

[0027] Since the PC film forming and conveying speed is relatively slow, the blade replacement can be done during roll changing. During the entire blade replacement process, the uncut PC film is conveyed forward, and the staff can manually cut the uncut part with the blade. This part of the PC film is rolled up to the bottom of the next roll. Since the bottom film will be uneven during the winding process, it is basically not used as the bottom layer, so it does not affect the overall winding quality.

[0028] Furthermore, the conveyor tables 20 located on the front and rear sides of the blade 28 are respectively equipped with rollers 30, and the feed end and discharge end of the conveyor tables 20 are respectively equipped with pressure rollers 31.

[0029] The PC film is positioned above the two idler rollers 30, which provide support. The pressure roller 31 presses the PC film downwards, flattening it on the two idler rollers 30 for easy cutting by the blade 28.

[0030] Preferably, there are two guide shafts 26, and the movable seat 21 is provided with two guide holes that cooperate with the guide shafts 26. The movable seat 21 is installed on the two guide shafts 26 in an inclined position.

[0031] The two guide shafts 26 are set in parallel, making the moving seat 21 more stable when moving left and right.

[0032] Furthermore, the two nuts of the bidirectional lead screw 27 are respectively provided with adjusting seats 33, and the movable seat 21 is detachably connected to the adjusting seats 33.

[0033] The adjusting seat 33 is connected to the movable seat 21 by a pair of screws. The movable seat 21 is provided with an adjusting seat mounting groove. The adjusting seat 33 is installed in the groove and is fastened by a pair of screws.

[0034] Preferably, the top end of the tool holder fixing seat 22 is rotatably mounted on the movable seat 21 via a pin, and the tool holder fixing seat 22 is provided with a locking screw 34 that is fixed to the movable seat 21.

[0035] The movable seat 21 is provided with a locking threaded hole, and the locking screw 34 is movably inserted into the tool holder fixed seat 22. After loosening the locking screw 34, the tool holder fixed seat 22 can be quickly flipped.

[0036] Furthermore, the tool holder fixing base 22 is provided with a lifting rod 35, the tool holder 23 is installed at the bottom end of the lifting rod 35, a rack is provided on one side of the lifting rod 35, and a gear that cooperates with the rack is provided on the output shaft of the tool holder adjusting motor 24. The lifting rod 35 is driven to move up and down through the cooperation of the gear and the rack.

[0037] The top end of the tool holder 23 is provided with a connector 36, and the bottom end of the lifting rod 35 is provided with a slot that mates with the connector 36, and a locking pin 37 is provided on the slot. The tool holder 23 is inserted into the slot through the connector 36 and locked by the locking pin 37.

[0038] When it is necessary to replace the blade 28, loosen the locking screw 34, flip the tool holder fixing seat 22 to one side, remove the locking pin 37, quickly remove the tool holder 23 from the lifting rod 35, and replace it with a tool holder 23 that carries the blade 28.

[0039] Structure and working principle of edge material crushing device 4: Edge material crushing device 4 includes crusher frame 38, crusher frame 38 is provided with crushed material collection trough 39, crushed material collection trough 39 is symmetrically and adjustablely provided with a pair of crushing boxes 40, crushing boxes 40 are arranged from top to bottom as follows: transverse extrusion feeding roller 41, longitudinal extrusion feeding roller 42 and crushing roller 43, transverse extrusion feeding roller 41 is provided with a set of annular indentation blades 45 on roller surface, longitudinal extrusion feeding roller 42 is provided with a set of transverse indentation blades 46 in annular array on roller surface, crushing roller 43 is provided with multiple sets of crushing rods 47 on roller surface, crushing box 40 is provided with an openable cover 48, and feed guide groove 49 is provided on cover 48, crushing box 40 is provided with crushing motor 51 that drives transverse extrusion feeding roller 41, longitudinal extrusion feeding roller 42 and crushing roller 43 to rotate.

[0040] The top of the crushed material collection tank 39 is equipped with a sliding table, and a pair of crushing boxes 40 are slidably installed on the crushed material collection tank 39 via the sliding table. The distance between the pair of crushing boxes 40 is adjusted according to the width of the PC film production.

[0041] The cut edge material enters the crushing box 40 through the feed guide 49. First, it is squeezed by the transverse extrusion feed roller 41 to create multiple longitudinal indentations. Then, when it passes through the longitudinal extrusion feed roller 42, it is squeezed to create multiple transverse indentations. The crisscrossing indentations divide the edge material into multiple small squares, while the small squares are connected to each other without being cut off. When it passes through the crushing roller 43, the crushing rod 47 strikes it, causing the small squares to separate and form independent fragments. The edge material can greatly reduce the generation of powder during crushing, and the crushed particle size is uniform. After crushing, it is collected and discharged through the crushed material collection trough 39.

[0042] In this case, both the annular indentation blade 45 and the transverse indentation blade 46 are blunt blades without sharpening. Furthermore, the indentation depth of the transverse extrusion feed roller 41 and the longitudinal extrusion feed roller 42 is the same. When the edge material passes through the annular indentation blade 45 and the transverse indentation blade 46, it is only indented, avoiding direct cutting of the edge material. Preferably, the transverse extrusion feed roller 41 is composed of a first fixed roller and a first movable roller, the longitudinal extrusion feed roller 42 is composed of a second fixed roller and a second movable roller, a set of annular indentation blades 45 is located on the first movable roller, a set of transverse indentation blades 46 is located on the second movable roller, the first fixed roller and the first movable roller, the second fixed roller and the second movable roller are all connected by gear transmission, and the second fixed roller and the crushing roller 43 are connected by gear transmission.

[0043] The first and second fixed rollers are fixed in place and rotate, while the first and second movable rollers can adjust their positions. The crushing motor 51 drives the second fixed roller through the transmission shaft. When the second fixed roller rotates, it simultaneously drives the first fixed roller and the crushing roller 43 to rotate. The gearbox is used to increase the speed of the crushing roller 43. The edge material with indentation is scattered and falls off by the crushing rod 47 on the crushing roller 43.

[0044] Furthermore, the crushing box 40 is provided with a first movable roller mounting groove and a second movable roller mounting groove, and a sliding block 53 is provided in both the first movable roller mounting groove and the second movable roller mounting groove. The first movable roller and the second movable roller are respectively mounted on the corresponding sliding block 53. A sliding block tensioning spring 54 is provided in both the first movable roller mounting groove and the second movable roller mounting groove.

[0045] The sliding block tensioning spring 54 is used to press the sliding block 53 towards the first fixed roller or the second fixed roller, so that the first movable roller and the second movable roller can fit tightly against the corresponding first fixed roller and the second fixed roller. At the same time, the first movable roller and the second movable roller have a certain clearance space to facilitate the passage of edge material. The sliding block tensioning spring 54 is an adjustable tensioning spring used to adjust the squeezing force between the movable roller and the fixed roller.

[0046] Furthermore, the first movable roller mounting groove and the second movable roller mounting groove are arranged in parallel and are both inclined.

[0047] The first movable roller mounting groove and the second movable roller mounting groove are inclined at a lower angle to the side closer to the fixed roller, and the first movable roller mounting groove and the second movable roller can adhere to the fixed roller by their own weight.

[0048] Furthermore, the feed guide 49 has an arc-shaped structure with its opening tilted to one side. This prevents foreign objects from falling into the crushing box 40 from the feed guide 49.

Claims

1. A cutting and crushing system for PC film production, characterized in that... The device includes a cutting device (3) and an edge crushing device (4) located below the discharge end of the cutting device (3). The cutting device (3) includes a conveyor table (20) and a pair of cutting components installed above the conveyor table (20). The cutting components include a moving seat (21), a knife holder fixing seat (22), a knife holder (23), and a knife holder adjusting motor (24). A guide shaft (26) is provided on the conveyor table (20). The moving seat (21) is slidably installed on the guide shaft (26). The distance between the two moving seats (21) of the pair of cutting components is adjusted by a two-way screw (27). The knife holder fixing seat (22) is angularly adjustable and installed on the moving seat (21). The knife holder adjusting motor (24) is installed on the knife holder fixing seat (22) and drives the knife holder (23) to move up and down on the knife holder fixing seat (22). A blade (28) is detachably installed on the knife holder (23). The edge material crushing device (4) includes a crusher frame (38), a crushing material collection trough (39) is provided on the crusher frame (38), a pair of crushing boxes (40) are symmetrically and adjustablely arranged on the top of the crushing material collection trough (39), and a transverse extrusion feeding roller (41), a longitudinal extrusion feeding roller (42) and a crushing roller (43) are arranged in sequence from top to bottom in the crushing box (40). A set of annular indentation blades (45) is provided on the roller surface of the transverse extrusion feeding roller (41), a set of transverse indentation blades (46) is arranged in annular array on the roller surface of the longitudinal extrusion feeding roller (42), and multiple sets of crushing rods (47) are provided on the roller surface of the crushing roller (43). An openable cover (48) is provided on the top of the crushing box (40), and a feed guide groove (49) is provided on the cover (48). A crushing motor (51) is provided on the crushing box (40) to drive the transverse extrusion feeding roller (41), the longitudinal extrusion feeding roller (42) and the crushing roller (43) to rotate.

2. The cutting and crushing system for PC film production according to claim 1, characterized in that... Rollers (30) are provided on the conveyor tables (20) located on the front and rear sides of the blade (28), and pressure rollers (31) are provided on the feed end and discharge end of the conveyor tables (20). There are two guide shafts (26), and the movable seat (21) is provided with two guide holes that cooperate with the guide shafts (26). The movable seat (21) is installed on the two guide shafts (26) in an inclined manner. The two nuts of the bidirectional lead screw (27) are respectively provided with adjusting seats (33), and the movable seat (21) is detachably connected to the adjusting seats (33).

3. The cutting and crushing system for PC film production according to claim 1, characterized in that... The top end of the tool holder fixing seat (22) is rotatably mounted on the movable seat (21) via a pin, and the tool holder fixing seat (22) is provided with a locking screw (34) that is fixed to the movable seat (21).

4. A cutting and crushing system for PC film production according to claim 1, characterized in that... The tool holder fixing seat (22) is provided with a lifting rod (35), the tool holder (23) is installed at the bottom end of the lifting rod (35), the lifting rod (35) is provided with a rack on one side, and the output shaft of the tool holder adjusting motor (24) is provided with a gear that cooperates with the rack. The lifting rod (35) is driven to move up and down through the gear and rack cooperation. The top end of the tool holder (23) is provided with a connector (36), and the bottom end of the lifting rod (35) is provided with a slot that matches the connector (36), and a locking pin (37) is provided on the slot. The tool holder (23) is inserted into the slot through the connector (36) and locked by the locking pin (37).

5. A cutting and crushing system for PC film production according to claim 1, characterized in that... The transverse extrusion feed roller (41) consists of a first fixed roller and a first movable roller, and the longitudinal extrusion feed roller (42) consists of a second fixed roller and a second movable roller. A set of annular indentation blades (45) are located on the first movable roller, and a set of transverse indentation blades (46) are located on the second movable roller. The first fixed roller and the first movable roller, the second fixed roller and the second movable roller, and the first fixed roller and the second fixed roller are all connected by gear transmission. The second fixed roller and the crushing roller (43) are connected by gear transmission.

6. A cutting and crushing system for PC film production according to claim 1, characterized in that... The crushing box (40) is provided with a first movable roller mounting groove and a second movable roller mounting groove, and a sliding block (53) is provided in both the first movable roller mounting groove and the second movable roller mounting groove. The first movable roller and the second movable roller are respectively mounted on the corresponding sliding block (53). A sliding block tensioning spring (54) is provided in both the first movable roller mounting groove and the second movable roller mounting groove. The first movable roller mounting groove and the second movable roller mounting groove are arranged in parallel and are both inclined.

7. A cutting and crushing system for PC film production according to claim 1, characterized in that... The feed guide chute (49) is an arc-shaped structure with its opening tilted to one side.

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