Cutting device for plastic film manufacturing

Abstract

The cutting device for plastic film manufacturing comprises a machining base, the upper portion of the right side of the machining base is fixedly connected with a front cutting frame and a rear cutting frame, a first lifting groove is formed in the left side of each cutting frame, and the upper portion of each cutting frame is fixedly connected with a hydraulic cylinder; the output end of the hydraulic cylinder penetrates through the cutting frame to be fixedly connected with a lifting plate, the lifting plate is slidably connected into the front first lifting groove and the rear first lifting groove, the bottom of the lifting plate is fixedly connected with a cutter, the right side of the lifting plate is fixedly connected with the front pushing block and the rear pushing block, and a second lifting groove is formed in the right side of the cutting frame. First lifting rods are fixedly connected into the second lifting grooves, fixing plates are slidably connected to the outer sides of the front first lifting rod and the rear first lifting rod, first springs are fixedly connected to the bottoms of the fixing plates, and the top ends of the first springs are fixedly connected with the inner walls of the second lifting grooves. The cutting precision of the plastic film is improved, and edge roughness is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic film production, in particular to a cutting device for plastic film manufacturing. Background Art

[0002] Plastic film is a film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, used for packaging and as a coating layer. Plastic packaging and plastic packaging products occupy an increasingly larger share in the market, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical and other fields, among which food packaging accounts for the largest proportion, such as beverage packaging, frozen food packaging, steamed food packaging, fast food packaging, etc. These products have brought great convenience to people's lives.

[0003] The existing automatic plastic cutting device needs to keep the plastic film being transported and needs to cut the film at the end. The cut film falls onto the placement plate due to inertia, which makes it impossible to press one end of the plastic film when it is cut, causing the plastic film to loosen. The blade may slip or bend during cutting, resulting in the shape or size of the cut film not being consistent with the expectations. Re-cutting or further processing may be required, increasing time and cost. After cutting, the edges of the loose plastic film may appear jagged or uneven, affecting its appearance and use effect. This may require additional grinding or trimming work to obtain a smooth edge. Utility Model Content

[0004] The utility model aims to provide a cutting device for manufacturing plastic film to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a cutting device for manufacturing plastic film, comprising a processing seat, wherein the upper right side of the processing seat is fixedly connected with front and rear groups of cutting frames, a first lifting groove is opened inside the left side of the cutting frame, a hydraulic cylinder is fixedly connected to the upper part of the cutting frame, the output end of the hydraulic cylinder penetrates the cutting frame and is fixedly connected with a lifting plate, the lifting plate is slidably connected to the inside of the front and rear groups of first lifting grooves, a cutting knife is fixedly connected to the bottom of the lifting plate, and front and rear groups of pushing blocks are fixedly connected to the right side of the lifting plate, a second lifting groove is opened inside the right side of the cutting frame, a first lifting rod is fixedly connected inside the second lifting groove, and a fixed plate is slidably connected to the outside of the front and rear groups of the first lifting rods, and a first spring is fixedly connected to the bottom of the fixed plate, the first spring is sleeved on the outside of the first lifting rod, and the top of the first spring is fixedly connected to the inner wall of the second lifting groove.

[0006] Preferably, a second lifting rod is slidably connected to the interior of the fixed plate, a fixing plate is fixedly connected to the top end of the second lifting rod, a pressing plate is fixedly connected to the bottom end of the second lifting rod, a second spring is fixedly connected to the top end of the pressing plate, and the top end of the second spring is fixedly connected to the fixing plate.

[0007] Preferably, the left side of the processing seat is fixedly connected with two front and rear groups of connecting rods, the upper left end of the connecting rod is fixedly connected with a mounting seat, the mounting seat is fixedly connected with a mounting rod inside, the outer side of the mounting rod is rotatably connected with a discharging cylinder, a connecting hole is opened in the middle of the processing seat, the bottom of the processing seat is fixedly connected with two front and rear groups of side brackets, the front and rear groups of side brackets are rotatably connected with a rotating shaft, the top of the processing seat is fixedly connected with four groups of fixing frames, the four groups of fixing frames are fixedly arranged on both sides of the connecting hole, the front and rear fixed frames are rotatably connected with a lower rotating roller, the front side of the fixing frame is fixedly connected with a motor, the power end of the motor is fixedly connected to the lower rotating roller, the upper part of the fixing frame is opened with a third lifting slot, the third lifting slot is slidably connected with a lifting block, and the upper rotating roller is rotatably connected between the lifting blocks on the front and rear sides.

[0008] Preferably, two groups of limit plates are slidably connected to the outer side of the mounting rod, and the two groups of limit plates are slidably arranged on both sides of the discharging barrel. The limit plate is fixedly connected to a third spring on the side away from the discharging barrel, and the other end of the third spring is fixedly connected to a mounting ring. The mounting ring is fixedly connected to a connecting platform on the side facing the limit plate, and the third spring is sleeved on the outer side of the connecting platform. The inner side of the upper part of the mounting ring is meshed with a top screw, and the left side of the mounting seat is meshed with a first mounting screw.

[0009] Preferably, a lead screw is rotatably connected inside the third lifting slot, the lead screw is meshingly connected to the inside of the lifting block, limiting blocks are fixedly connected on both sides of the lifting block, a limiting slot is opened inside the third lifting slot, and the limiting block is slidably connected to the inside of the limiting slot.

[0010] Preferably, the right side of the cutting frame is fixedly connected to a falling bracket, and the falling brackets on the front and rear sides are rotatably connected to rotating wheels, the front and rear sides of the right end of the processing seat are fixedly connected to side baffles, a sliding groove is opened inside the right side of the side baffle, a sliding block is slidably connected inside the sliding groove, a baffle is fixedly connected between the sliding blocks on the front and rear sides, the sliding block is fixedly connected to a fixed plate on the side away from the fixed plate, a second mounting screw is meshedly connected inside the fixed plate, and a plurality of position holes matching the second mounting screw are opened on the outer side of the side baffle.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model cooperates with a hydraulic cylinder, a lifting plate, a cutting knife, a pushing block, a fixed plate, a pressing sheet, and a second spring. The hydraulic cylinder pushes the lifting plate to move up and down, and the cutting knife cuts the plastic film. When the lifting plate moves downward, the pushing block pushes the fixed plate to move downward. When the fixed plate moves downward, the pressing sheet presses the plastic film. The second spring pushes the pressing sheet downward, so that the pressing sheet can press the plastic film, which can ensure that the plastic film remains taut during shearing, improve the cutting accuracy of the plastic film, and prevent the edge from being rough.

[0013] 2. The utility model also controls the cutting length of the plastic film by controlling the lifting frequency of the hydraulic cylinder through the coordinated use of a hydraulic cylinder, a sliding groove, a sliding block, a baffle, a second mounting screw, and a position hole, adjusts the position of the baffle by moving the sliding block along the sliding groove, and fixes the position of the baffle by installing the second mounting screw into different position holes, thereby arranging plastic films of different lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from the first viewing angle;

[0015] Figure 2 This is a schematic diagram of the cutting frame structure of the utility model from a second viewing angle;

[0016] Figure 3 This is a schematic diagram of the installation ring structure of the utility model from the third viewing angle;

[0017] Figure 4 This is a schematic diagram of the structure of the fourth viewing angle fixing frame of the utility model;

[0018] Figure 5 This is a schematic diagram of the side baffle structure of the utility model from the fifth viewing angle.

[0019] In the figure: 1, processing seat; 2, cutting frame; 3, hydraulic cylinder; 4, first lifting slot; 5, lifting plate; 6, cutting knife; 7, second lifting slot; 8, first lifting rod; 9, fixing plate; 10, first spring; 11, pushing block; 12, second lifting rod; 13, fixing plate; 14, pressing plate; 15, second spring; 16, connecting rod; 17, mounting seat; 18, mounting rod; 19, discharge barrel; 20, limiting plate; 21, connecting table; 22, third spring; 23, mounting ring; 2 4. Top screw; 25. First mounting screw; 26. Fixed frame; 27. Motor; 28. Lower rotating roller; 29. ​​Third lifting slot; 30. Lead screw; 31. Lifting block; 32. Limit block; 33. Limit slot; 34. Connecting hole; 35. Side bracket; 36. Rotating shaft; 37. Lower bracket; 38. Rotating wheel; 39. Side baffle; 40. Sliding slot; 41. Baffle; 42. Sliding block; 43. Mounting plate; 44. Second mounting screw; 45. Position hole; 46. Upper rotating roller. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-5 The utility model provides a technical solution: a cutting device for manufacturing plastic film, comprising a processing seat 1, two groups of front and rear cutting frames 2 are fixedly welded on the upper right side of the processing seat 1, a first lifting slot 4 is opened inside the left side of the cutting frame 2, a hydraulic cylinder 3 is installed on the upper flange of the cutting frame 2, and a lifting plate 5 is installed on the output end of the hydraulic cylinder 3 penetrating the flange of the cutting frame 2. The lifting plate 5 is slidably installed inside the front and rear two groups of first lifting slots 4, a cutting knife 6 is fixedly welded on the bottom of the lifting plate 5, and two groups of front and rear pushing blocks 11 are fixedly welded on the right side of the lifting plate 5. A second lifting slot 7 is opened inside the right side of the cutting frame 2, and the second lifting slot 7 is opened inside the right side of the cutting frame 2. A first lifting rod 8 is fixedly welded inside the groove 7, and a fixing plate 9 is slidably installed on the outside of the front and rear sets of the first lifting rods 8. A first spring 10 is fixedly welded at the bottom of the fixing plate 9. The first spring 10 is sleeved on the outside of the first lifting rod 8, and the top of the first spring 10 is fixedly welded to the inner wall of the second lifting groove 7. The hydraulic cylinder 3 pushes the lifting plate 5 to move up and down, and the cutting knife 6 cuts the plastic film. When the lifting plate 5 moves downward, the pushing block 11 pushes the fixing plate 9 to move downward, which is used to fix one end of the plastic film. After cutting, the first spring 10 drives the fixing plate 9 to move upward, which is convenient for the subsequent transportation of the plastic film.

[0022] A second lifting rod 12 is installed inside the fixed plate 9 for sliding forward and backward, a fixing plate 13 is fixedly welded on the top of the second lifting rod 12, a pressing plate 14 is fixedly welded on the bottom of the second lifting rod 12, a second spring 15 is fixedly welded on the top of the pressing plate 14, and the top of the second spring 15 is fixedly welded to the fixing plate 13. When the fixed plate 9 moves downward, the pressing plate 14 presses the plastic film, and the second spring 15 pushes the pressing plate 14 downward so that the pressing plate 14 can press the plastic film; two groups of front and rear connecting rods 16 are fixedly welded on the left side of the processing seat 1, a mounting seat 17 is fixedly welded on the upper left end of the connecting rod 16, a mounting rod 18 is fixedly welded inside the mounting seat 17, a discharging cylinder 19 is rotatably installed on the outside of the discharging cylinder 19, and a plastic film is wrapped around the outside of the discharging cylinder 19 The processing seat 1 is provided with a connecting hole 34 in the middle, two front and rear side brackets 35 are fixedly welded at the bottom of the processing seat 1, and a rotating shaft 36 is rotatably installed between the front and rear side brackets 35. Four sets of fixing frames 26 are fixedly welded at the top of the processing seat 1, and the four sets of fixing frames 26 are fixedly arranged on both sides of the connecting hole 34. A lower rotating roller 28 is rotatably installed between the front and rear fixing frames 26. A motor 27 is fixedly welded at the front side of the front fixing frame 26, and the power end of the motor 27 is fixedly welded to the lower rotating roller 28. The motor 27 drives the lower rotating roller 28 to rotate for conveying the plastic film. A third lifting slot 29 is provided at the upper part of the fixing frame 26, and a lifting block 31 is slidably installed inside the third lifting slot 29, and an upper lifting block 31 is rotatably installed between the lifting blocks 31 on the front and rear sides. The rotating roller 46, the upper rotating roller 46 cooperates with the lower rotating roller 28 to press the plastic film, and the rotating shaft 36 cooperates with the upper rotating roller 46 and the lower rotating roller 28 to stretch the plastic film; two groups of limit plates 20 are slidably installed on the outside of the mounting rod 18, and the two groups of limit plates 20 are slidably arranged on both sides of the discharge cylinder 19, and the position of the discharge cylinder 19 is limited according to the different sizes of the discharge cylinder 19. The side of the limit plate 20 away from the discharge cylinder 19 is fixedly welded with a third spring 22, and the other end of the third spring 22 is fixedly welded with a mounting ring 23, and the side of the mounting ring 23 facing the limit plate 20 is fixedly welded with a connecting platform 21, and the third spring 22 is sleeved on the outside of the connecting platform 21, and the third spring 22 pushes the limit plate 20 to be close to both sides of the discharge cylinder 19 to ensure The discharge barrel 19 cannot move, and a top screw 24 is meshedly connected to the inner side of the upper part of the mounting ring 23 to fix the position of the mounting ring 23. A first mounting screw 25 is meshedly installed inside the left side of the mounting seat 17 to fix the mounting rod 18, so as to facilitate the disassembly and assembly of the mounting rod 18; a lead screw 30 is rotatably installed inside the third lifting groove 29, and the lead screw 30 is meshedly connected to the inside of the lifting block 31. By rotating the lead screw 30, the lifting block 31 drives the upper rotating roller 46 to move up and down, which is used to press plastic films of different sizes. Limiting blocks 32 are fixedly welded on both sides of the lifting block 31, and a limiting groove 33 is provided inside the third lifting groove 29. The limiting block 32 is slidably installed inside the limiting groove 33 to prevent the lifting block 31 from rotating under the drive of the lead screw 30;A drop bracket 37 is fixedly welded on the right side of the cutting frame 2, and a rotating wheel 38 is rotatably installed on the front and rear sides of the drop bracket 37. The cut plastic film falls onto the processing seat 1 along the rotating wheel 38 in the drop bracket 37. Side baffles 39 are fixedly welded on the front and rear sides of the right end of the processing seat 1 to prevent the plastic film from being unable to separate from the processing seat 1. A sliding groove 40 is opened inside the right side of the side baffle 39, and a sliding block 42 is slidably installed inside the sliding groove 40. A baffle 41 is fixedly welded between the sliding blocks 42 on the front and rear sides. For limiting the falling position of the plastic film, a mounting plate 43 is fixedly welded on the side of the sliding block 42 away from the mounting plate 43. A second mounting screw 44 is meshed and connected inside the mounting plate 43. A plurality of position holes 45 matching the second mounting screw 44 are opened on the outside of the side baffle 39. The position of the baffle 41 is fixed by installing the second mounting screw 44 into different position holes 45. ;

[0023] Working principle: When the utility model is in use, the discharging cylinder 19 wrapped with the plastic film is installed on the mounting rod 18, and the plastic film is pulled out, passes through the rotating shaft 36 between the upper rotating roller 46 and the lower rotating roller 28 on the left side, and passes through the upper rotating roller 46 and the lower rotating roller 28 on the right side. The hydraulic cylinder 3 pushes the lifting plate 5 to move up and down, and the cutting knife 6 cuts the plastic film. When the lifting plate 5 moves downward, the pushing block 11 pushes the fixed plate 9 to move downward. When the fixed plate 9 moves downward, the pressing plate 14 presses the plastic film, and the second spring 15 pushes the pressing plate 14 is downward, so that the pressing plate 14 can press the plastic film. After cutting, the first spring 10 drives the fixing plate 9 to move upward, which is convenient for the subsequent transportation of the plastic film. The cut plastic film falls onto the processing seat 1 along the rotating wheel 38. The cutting length of the plastic film is controlled by controlling the lifting frequency of the hydraulic cylinder 3. The position of the baffle 41 is adjusted by moving the sliding block 42 along the sliding groove 40. The position of the baffle 41 is fixed by installing the second mounting screw 44 into different position holes 45, which is used to sort plastic films of different lengths.

[0024] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutting device for manufacturing plastic film, comprising a processing seat (1), Features: The upper right side of the processing seat (1) is fixedly connected with two groups of front and rear cutting frames (2); the left side of the cutting frame (2) is provided with a first lifting groove (4); the upper part of the cutting frame (2) is fixedly connected with a hydraulic cylinder (3); the output end of the hydraulic cylinder (3) penetrates the cutting frame (2) and is fixedly connected with a lifting plate (5); the lifting plate (5) is slidably connected to the inside of the two groups of front and rear first lifting grooves (4); the bottom of the lifting plate (5) is fixedly connected with a cutting knife (6); the right side of the lifting plate (5) is fixedly connected with two groups of front and rear pushing blocks (11); the right side of the cutting frame (2) is provided with a second lifting groove (7); the inside of the second lifting groove (7) is fixedly connected with a first lifting rod (8); the outer sides of the two groups of front and rear first lifting rods (8) are slidably connected with a fixing plate (9); the bottom of the fixing plate (9) is fixedly connected with a first spring (10); the first spring (10) is sleeved on the outer side of the first lifting rod (8); the top of the first spring (10) is fixedly connected to the inner wall of the second lifting groove (7).

2. A cutting device for manufacturing plastic film according to claim 1, Features: A second lifting rod (12) is slidably connected to the interior of the fixed plate (9) in a forward and backward manner; a fixing plate (13) is fixedly connected to the top end of the second lifting rod (12); a pressing plate (14) is fixedly connected to the bottom end of the second lifting rod (12); a second spring (15) is fixedly connected to the top end of the pressing plate (14); and a top end of the second spring (15) is fixedly connected to the fixing plate (13).

3. A cutting device for manufacturing plastic film according to claim 1, Features: The left side of the processing seat (1) is fixedly connected with two groups of front and rear connecting rods (16), the upper left end of the connecting rod (16) is fixedly connected with a mounting seat (17), the inside of the mounting seat (17) is fixedly connected with a mounting rod (18), the outer side of the mounting rod (18) is rotatably connected with a discharge cylinder (19), a connecting hole (34) is opened in the middle of the processing seat (1), the bottom of the processing seat (1) is fixedly connected with two groups of front and rear side brackets (35), the front and rear two groups of side brackets (35) are rotatably connected with a rotating shaft (36), and the top of the processing seat (1) is fixedly connected with Four groups of fixed frames (26) are fixedly arranged on both sides of the connecting hole (34); a lower rotating roller (28) is rotatably connected between the front and rear fixed frames (26); a motor (27) is fixedly connected to the front side of the front fixed frame (26); a power end of the motor (27) is fixedly connected to the lower rotating roller (28); a third lifting groove (29) is opened on the upper part of the fixed frame (26); a lifting block (31) is slidably connected inside the third lifting groove (29); and an upper rotating roller (46) is rotatably connected between the lifting blocks (31) on the front and rear sides.

4. A cutting device for manufacturing plastic film according to claim 3, Features: Two groups of limit plates (20) are slidably connected to the outer side of the mounting rod (18), and the two groups of limit plates (20) are slidably arranged on both sides of the discharge barrel (19). The side of the limit plate (20) away from the discharge barrel (19) is fixedly connected to a third spring (22), and the other end of the third spring (22) is fixedly connected to a mounting ring (23). The mounting ring (23) is fixedly connected to a connecting platform (21) on the side facing the limit plate (20), and the third spring (22) is sleeved on the outer side of the connecting platform (21). The inner side of the upper part of the mounting ring (23) is meshedly connected to a top screw (24), and the left side of the mounting seat (17) is meshedly connected to the inside thereof.

5. A cutting device for manufacturing plastic film according to claim 3, Features: A lead screw (30) is rotatably connected inside the third lifting slot (29), the lead screw (30) is meshedly connected inside the lifting block (31), both sides of the lifting block (31) are fixedly connected to limit blocks (32), a limit slot (33) is provided inside the third lifting slot (29), and the limit block (32) is slidably connected inside the limit slot (33).

6. A cutting device for manufacturing plastic film according to claim 1, Features: The right side of the cutting frame (2) is fixedly connected with a drop bracket (37), and the drop bracket (37) is rotatably connected with a rotating wheel (38) on the front and rear sides. The right end of the processing seat (1) is fixedly connected with a side baffle (39) on the front and rear sides. A sliding groove (40) is provided inside the right side of the side baffle (39), and a sliding block (42) is slidably connected inside the sliding groove (40). A baffle (41) is fixedly connected between the sliding blocks (42) on the front and rear sides. The side of the sliding block (42) away from the mounting plate (43) is fixedly connected with a mounting plate (43), and a second mounting screw (44) is meshedly connected inside the mounting plate (43). A plurality of position holes (45) matching with the second mounting screw (44) are provided on the outer side of the side baffle (39).

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