A cutting device for plastic bags

Abstract

The utility model discloses a kind of cutting device of plastic bag, it is related to the technical field of plastic bag processing, including rack, conveying mechanism and flattening cutting mechanism, the top of the rack is equipped with cutting plate, the rack is equipped with support frame above cutting plate;The conveying mechanism is equipped on rack, and the flattening cutting mechanism is equipped on support frame.This application is transported to the plastic bag to be cut by conveying mechanism, and by the unique design of flattening cutting mechanism, in cutting process, rubber pad of platen bottom first contacts with plastic bag, and spring effect on guide rod makes platen flatten plastic bag, this mode ensures that plastic bag is in flat state when cutting, to avoid the problem such as cutting inaccuracy, cutting irregularity caused by plastic bag wrinkle or uneven, make the plastic bag edge after cutting neat, smooth, improve the overall quality of plastic bag.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic bag processing, specifically to a plastic bag cutting device. Background Technology

[0002] With the continuous development of the plastic packaging industry, the demand for plastic bag production and processing is increasing. Cutting is a crucial step in the production and processing of plastic bags. In traditional plastic bag roll cutting devices, the raw plastic bag material is prone to wrinkling, leading to inaccurate cutting and irregular cut edges, thus affecting the subsequent use of the plastic bag. Summary of the Invention

[0003] The purpose of this invention is to provide a cutting device for plastic bags to overcome the above-mentioned defects in the prior art.

[0004] A plastic bag cutting device includes a frame, a conveying mechanism and a flattening and cutting mechanism. The top of the frame is provided with a cutting plate, and the frame is provided with a support frame above the cutting plate.

[0005] The conveying mechanism is mounted on the frame and is used to convey plastic bags forward.

[0006] The flattening and cutting mechanism is mounted on the support frame and is used to flatten and cut the cut edges of the plastic bag.

[0007] Preferably, the conveying mechanism includes a guide roller, a drive roller, a right-angle geared motor, and a squeeze roller. The two ends of the guide roller are rotatably connected to fixed plates on both sides of the frame. The two ends of the drive roller are rotatably connected to the frame. The right-angle geared motor is mounted on the side of the frame and its output shaft is connected to one end of the drive roller via a coupling. The two ends of the squeeze roller are rotatably connected to the frame and located above the drive roller. A second guide roller is rotatably connected between the guide roller and the squeeze roller.

[0008] Preferably, the flattening and cutting mechanism includes a cylinder, a cutting blade, a guide rod, and a pressure plate. Two cylinders are symmetrically arranged on both sides of the support frame. Each cylinder's piston rod has a movable plate slidably connected to the upper slide rail inside the support frame. Each movable plate has a locking block on its side. The cutting blade is mounted on the two locking blocks and has several evenly distributed sliding grooves. Support plates are symmetrically arranged on both sides of each sliding groove. The guide rod has a "U"-shaped structure and is slidably connected in the middle of the sliding groove. Both sides of the guide rod are slidably connected to the support plates. Two pressure plates are respectively located at the lower ends of both sides of the guide rod. A spring is sleeved on the guide rod between the pressure plate and the support plate.

[0009] Preferably, each pressure plate has a rubber pad at its bottom.

[0010] Preferably, the locking block is connected to the cutting knife by bolts.

[0011] Preferably, a material receiving table is provided below the discharge end of the machine frame.

[0012] Preferably, the main body of the machine frame is of a "U" - shaped structure.

[0013] The beneficial effects achieved by the present utility model are as follows:

[0014] In this application, the plastic bags to be cut are conveyed by the conveying mechanism, and through the unique design of the flattening and cutting mechanism, during the cutting process, the rubber pad at the bottom of the pressing plate first contacts the plastic bag, and under the action of the spring on the guide rod, the pressing plate flattens the plastic bag. This method ensures that the plastic bag is in a flat state during cutting, thus avoiding problems such as inaccurate cutting and irregular cut edges caused by wrinkles or unevenness of the plastic bag, making the edges of the cut plastic bags neat and smooth, and improving the overall quality of the plastic bags. Description of the Drawings

[0015] Figure 1 It is a schematic structural view of the whole of the present utility model.

[0016] Figure 2 is Figure 1 a partial enlarged view of part A in

[0017] Figure 3 It is a side view of the whole of the present utility model.

[0018] Figure 4 It is a schematic structural view of the inside of the machine frame of the present utility model.

[0019] Figure 5 It is a schematic structural view of the flattening and cutting mechanism of the present utility model.

[0020] Figure 6 It is a side view of the flattening and cutting mechanism of the present utility model.

[0021] In the figure, 1. Machine frame; 2. Cutting board; 3. Support frame; 31. Slide rail; 4. Conveying mechanism; 41. First guiding roller; 42. Fixed plate; 43. Driving roller; 44. Right - angle reduction motor; 45. Extrusion roller; 46. Second guiding roller; 5. Flattening and cutting mechanism; 51. Cylinder; 52. Moving plate; 53. Locking block; 54. Cutting knife; 541. Chute; 542. Support plate; 55. Guide rod; 56. Pressing plate; 561. Rubber pad; 57. Spring; 6. Material receiving table. Detailed Embodiments

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0024] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] like Figure 1-6 As shown, this utility model provides a plastic bag cutting device, characterized in that: it includes a frame 1, a conveying mechanism 4 and a flattening and cutting mechanism 5. The main body of the frame 1 is a "U"-shaped structure and a cutting plate 2 is provided on its top. A support frame 3 is provided above the cutting plate 2 of the frame 1. A material receiving platform 6 is provided below the discharge end of the frame 1 to receive the cut plastic bags.

[0026] It should be noted that the conveying mechanism 4 is mounted on the frame 1 and is used to convey plastic bags forward. The conveying mechanism 4 includes a guide roller 41, a drive roller 43, a right-angle reduction motor 44, and a squeezing roller 45. The two ends of the guide roller 41 are rotatably connected to the fixed plates 42 on both sides of the frame 1. The two ends of the drive roller 43 are rotatably connected to the frame 1. The right-angle reduction motor 44 is mounted on the side of the frame 1 and its output shaft is connected to one end of the drive roller 43 through a coupling. The two ends of the squeezing roller 45 are rotatably connected to the frame 1 and are located above the drive roller 43. A guide roller 46 is rotatably connected between the guide roller 41 and the squeezing roller 45.

[0027] In addition, the flattening and cutting mechanism 5 is mounted on the support frame 3 and is used to smooth and cut the cutting part of the plastic bag. The flattening and cutting mechanism 5 includes a cylinder 51, a cutting blade 54, a guide rod 55 and a pressure plate 56. There are two cylinders 51 and they are symmetrically arranged on both sides of the support frame 3. Each cylinder 51 has a moving plate 52 that is slidably connected to the upper slide rail 31 on the inner side of the support frame 3 on its piston rod.

[0028] Each movable block is provided with a locking block 53 on its side. The cutter 54 is provided on two locking blocks 53 and has several sliding grooves 541 evenly distributed on it. The locking blocks 53 are connected to the cutter 54 by bolts, so that the locking blocks 53 and the cutter 54 can be quickly disassembled and reassembled for maintenance.

[0029] The cutting blade is symmetrically provided with support plates 542 on both sides of each groove 541. The guide rod 55 has a "U" shaped structure and is slidably connected in the middle of the groove 541. The two sides of the guide rod 55 are slidably connected to the support plates 542 respectively, thereby guiding the movement of the guide rod 55.

[0030] In addition, there are two pressure plates 56 respectively located at the lower ends of both sides of the guide rod 55. Each pressure plate 56 has a rubber pad 561 at its bottom to prevent the pressure plate 56 from crushing the plastic bag. A spring 57 is sleeved on the guide rod 55 between the pressure plate 56 and the support plate 542.

[0031] Detailed implementation methods and principles:

[0032] When in use, the plastic bag to be cut is passed through guide roller 1 41, guide roller 2 46 and drive roller 43 and squeeze roller 45. The output shaft of right angle reduction motor 44 drives drive roller 43 to rotate, so that the plastic bag to be cut is brought to the bottom of cutter 54.

[0033] Next, the piston rod of the control cylinder 51 extends, causing the moving plate 52 to move down the slide rail 31 of the support frame 3. When the rubber pad 561 at the bottom of the pressure plate 56 contacts the plastic bag, the plastic bag is flattened. The cutter 54 continues to move down, the guide rod 55 moves along the slide groove 541, and at the same time the spring 57 on the guide rod 55 is compressed, and the cutter 54 cuts the plastic bag.

[0034] After the plastic bag is cut, the piston rod of the control cylinder 51 retracts, causing the moving plate 52 to move up the slide rail 31 of the support frame 3. When the rubber pad 561 at the bottom of the pressure plate 56 is no longer in contact with the plastic bag, the pressure plate 56 resets, and the cut plastic bag slides down onto the material receiving platform 6.

[0035] The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A cutting apparatus for plastic bags, characterized by: It includes a frame (1), a conveying mechanism (4) and a flattening and cutting mechanism (5). A cutting board (2) is provided at the top of the frame (1), and a support frame (3) is provided above the cutting board (2) on the frame (1). The conveying mechanism (4) is arranged on the frame (1) and is used for conveying the plastic bag forward. The flattening and cutting mechanism (5) is arranged on the support frame (3) and is used for smoothing and cutting the cutting part of the plastic bag.

2. The cutting device for plastic bags according to claim 1, characterized in that: The conveying mechanism (4) includes a first guiding roller (41), a driving roller (43), a right-angle reduction motor (44) and a squeezing roller (45). Both ends of the first guiding roller (41) are rotatably connected to fixing plates (42) on both sides of the frame (1). Both ends of the driving roller (43) are rotatably connected to the middle of the frame (1). The right-angle reduction motor (44) is installed on the side of the frame (1), and its output shaft is connected to one end of the driving roller (43) through a coupling. Both ends of the squeezing roller (45) are rotatably connected to the middle of the frame (1) and are located above the driving roller (43). A second guiding roller (46) is rotatably connected to the frame (1) between the first guiding roller (41) and the squeezing roller (45).

3. The cutting device for plastic bags according to claim 1, characterized in that: The flattening and cutting mechanism (5) includes a cylinder (51), a cutting knife (54), a guiding rod (55) and a pressing plate (56). There are two cylinders (51) which are symmetrically arranged on both sides of the support frame (3). A moving plate (52) slidably connected to the upper sliding rail (31) inside the support frame (3) is respectively provided on the piston rod of each cylinder (51). A locking block (53) is provided on the side of each moving block. The cutting knife (54) is arranged on the two locking blocks (53), and a number of sliding grooves (541) are evenly distributed thereon. Support plates (542) are symmetrically arranged on both sides of each sliding groove (541) of the cutting knife. The guiding rod (55) is of a "U" - shaped structure and is slidably connected to the sliding groove (541) in the middle. Both sides of the guiding rod (55) are respectively slidably connected to the support plates (542). There are two pressing plates (56) which are respectively arranged at the lower ends on both sides of the guiding rod (55). A spring (57) is sleeved on the guiding rod (55) and is located between the pressing plate (56) and the support plate (5(42)).

4. The cutting device for plastic bags according to claim 3, characterized in that: A rubber pad (561) is provided at the bottom of each pressing plate (56).

5. The plastic bag cutting device according to claim 3, characterized in that: The locking block (53) is connected to the cutting knife (54) by bolts.

6. The cutting device for plastic bags according to claim 1, characterized in that: A material receiving table (6) is provided below the discharging end of the frame (1).

7. The plastic bag cutting device according to claim 1, characterized in that: The main body of the frame (1) is of a "U" - shaped structure.

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