A plastic packaging bag trimming machine

Abstract

The utility model discloses a plastic packaging bag edge trimmer, include: door type frame, mounting bracket, cutting knife, reciprocating elevator and flatting mechanism, the bottom of flatting mechanism is located the below of cutting knife, and mounting bracket will drive flatting mechanism to lift when lifting, flatting mechanism includes mounting panel, four groups of damper rod, four groups of spring, two groups of flatting plate and two groups of locating block, the utility model discloses the reciprocating lifting mechanism drive mounting bracket does reciprocating lifting movement, and mounting bracket can drive cutting knife and flatting mechanism to lift, and because flatting mechanism is located the below of cutting knife, two groups of flatting plate in flatting mechanism will contact packaging bag earlier than cutting knife, through the continuous down of two groups of flatting plate, will make four groups of spring and four groups of damper rod contract, and the both sides of packaging bag are flattened, and can utilize cutting knife to the edge processing of packaging bag simultaneously, and the flatting effect is better, and convenient operation improves the processing efficiency to packaging bag.

Description

Technical Field

[0001] This utility model relates to the field of plastic packaging bag processing technology, specifically a plastic packaging bag edge cutting machine. Background Technology

[0002] Plastic packaging bags are packaging bags made from plastic and used in the production of various daily necessities. They are widely used in daily life and industrial production. During the production process, the edges of plastic packaging bags need to be cut to ensure that the produced plastic packaging bags have a better appearance and usability, so plastic packaging bag cutting devices are required.

[0003] During the movement of packaging bags, wrinkles can easily form in certain areas, which can affect the appearance and quality of the packaging bags after the edges are cut. Although existing plastic packaging bag cutting devices can flatten the wrinkles on the packaging bags, the effect is not good and the operation is not convenient enough, which reduces the processing efficiency of the packaging bags.

[0004] For example, a cutting device for biodegradable plastic packaging bags (publication number: CN221953993U) includes a gantry frame, a first pneumatic rod, a second pneumatic rod, a guide column, a tension spring, a spring frame, a pressure block, and a cutter. The second pneumatic rod drives the guide column to move downward, causing the tension spring, spring frame, and pressure block to move downward. The pressure block flattens the wrinkles on the packaging bag, and then the first pneumatic rod drives the cutter downward to cut the edge. However, in actual use, the pressure block can only flatten one side of the packaging bag. Moreover, during the flattening process, the cutter must wait for the pressure block to flatten the packaging bag before it can move downward via the first pneumatic rod. This results in the aforementioned problems of poor performance, inconvenient operation, and reduced processing efficiency for packaging bags. Therefore, we need to propose a plastic packaging bag cutting machine. Utility Model Content

[0005] The purpose of this utility model is to provide a plastic packaging bag edge cutting machine that has a better flattening effect and is easy to operate, thereby improving the processing efficiency of packaging bags and solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A plastic packaging bag edge-cutting machine, comprising:

[0008] A portal frame, wherein a mounting frame is installed inside which can be raised and lowered, and a cutter is installed inside the mounting frame;

[0009] The reciprocating lifting mechanism is installed on the gantry frame. The reciprocating lifting mechanism drives the mounting frame to rise and fall, thereby causing the cutter to rise and fall.

[0010] The flattening mechanism is mounted on the mounting frame and is used to flatten the packaging bag. The bottom of the flattening mechanism is located below the cutter. When the mounting frame is raised or lowered, it will drive the flattening mechanism to rise or fall. The flattening mechanism includes a mounting plate, four sets of damping rods, four sets of springs, two sets of pressing plates, and two sets of positioning blocks.

[0011] Preferably, the mounting plate is installed on the top of the mounting frame, the four sets of damping rods are symmetrically fixedly installed on the bottom of the mounting plate, and the four sets of damping rods are respectively located on both sides of the cutter. The bottom ends of the four sets of damping rods are respectively fixedly connected to two sets of pressure plates, and the four sets of springs are respectively sleeved on the outer wall of the four sets of damping rods.

[0012] Preferably, the two sets of positioning blocks are symmetrically fixedly connected to the bottom of the mounting plate, and the top of the mounting frame is provided with two sets of positioning grooves that are adapted to the positioning blocks, and the two sets of positioning blocks are respectively inserted into the two sets of positioning grooves.

[0013] Preferably, the mounting plate is threaded with three sets of first bolts, and the mounting bracket is provided with three sets of first mounting slots that are adapted to the first bolts. The mounting plate and the mounting bracket are installed by the cooperation of the first bolts and the first mounting slots.

[0014] Preferably, the reciprocating lifting mechanism includes a dual-axis motor, two sets of rotating rods, two sets of bearing seats, two sets of turntables, two sets of short connecting rods, two sets of connecting plates, and two sets of long connecting rods. The dual-axis motor is fixedly installed on the top of the portal frame. Both ends of the dual-axis motor are fixedly connected to the two sets of rotating rods, and one end of each set of rotating rods is fixedly connected to the two sets of turntables. The two sets of short connecting rods are fixedly connected to one end of each set of turntables. One end of each set of connecting plates is rotatably installed on the outer wall of each set of short connecting rods, and the other end of each set of connecting plates is rotatably installed on the outer wall of each set of long connecting rods. The two sets of long connecting rods are fixedly connected to both sides of the mounting frame.

[0015] Preferably, both sides of the portal frame are provided with sliding grooves adapted to the long connecting rods, and the two sets of long connecting rods are respectively located inside the two sets of sliding grooves.

[0016] Preferably, the two sets of bearing seats are symmetrically fixedly installed on both sides of the top of the portal frame, and one end of each set of rotating rods passes through the bearing inside the two sets of bearing seats.

[0017] Preferably, one side of the mounting bracket is threaded with three sets of second bolts, and the cutter is provided with three sets of second mounting slots that are adapted to the second bolts. The mounting bracket and the cutter are installed by the cooperation of the second bolts and the second mounting slots.

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

[0019] This utility model uses a reciprocating lifting mechanism to drive the mounting frame to reciprocate and lift. The mounting frame can drive the cutter and flattening mechanism to lift and lower. Since the flattening mechanism is located below the cutter, the two sets of pressing plates in the flattening mechanism will contact the packaging bag before the cutter. As the two sets of pressing plates continue to move downward, the four sets of springs and four sets of damping rods will contract, flattening both sides of the packaging bag. At the same time, the cutter can be used to trim the edges of the packaging bag. The flattening effect is good, the operation is convenient, and the processing efficiency of the packaging bag is improved. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the flattening mechanism of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the present invention, showing the mounting bracket and the cutter separated.

[0023] In the diagram: 1. Gantry frame; 2. Mounting bracket; 3. Cutter; 4. Reciprocating lifting mechanism; 41. Dual-axis motor; 42. Rotating rod; 43. Bearing seat; 44. Turntable; 45. Short connecting rod; 46. Connecting plate; 47. Long connecting rod; 5. Flattening mechanism; 51. Mounting plate; 52. Damping rod; 53. Spring; 54. Pressing plate; 55. Positioning block; 6. Positioning groove; 7. First bolt; 8. Second bolt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-3 This utility model provides a technical solution:

[0026] A plastic packaging bag trimming machine includes: a gantry frame 1, inside which a mounting frame 2 is vertically mounted, and a cutter 3 is installed inside the mounting frame 2; a reciprocating lifting mechanism 4, which is mounted on the gantry frame 1, and drives the mounting frame 2 to rise and fall, thereby causing the cutter 3 to rise and fall; and a flattening mechanism 5, which is mounted on the mounting frame 2, and is used to flatten the packaging bag, with the bottom of the flattening mechanism 5 located below the cutter 3, and the flattening mechanism 5 is driven to rise and fall when the mounting frame 2 is raised and lowered. The flattening mechanism 5 includes a mounting plate 51, four sets of damping rods 52, four sets of springs 53, two sets of pressing plates 54, and two sets of positioning blocks 55.

[0027] In this embodiment, the reciprocating lifting mechanism 4 drives the mounting frame 2 to perform reciprocating lifting motion. The mounting frame 2 can drive the cutter 3 and the flattening mechanism 5 to lift and lower. Since the flattening mechanism 5 is located below the cutter 3, the flattening mechanism 5 will contact the packaging bag before the cutter 3, flattening both sides of the packaging bag. At the same time, the cutter 3 can be used to cut the edges of the packaging bag. The flattening effect is good, and the operation is convenient, improving the processing efficiency of the packaging bag.

[0028] Mounting plate 51 is mounted on top of mounting bracket 2. Four sets of damping rods 52 are symmetrically fixedly mounted on the bottom of mounting plate 51. The four sets of damping rods 52 are located on both sides of cutter 3. The bottom ends of the four sets of damping rods 52 are fixedly connected to two sets of pressure plates 54. Four sets of springs 53 are respectively sleeved on the outer wall of the four sets of damping rods 52.

[0029] In this embodiment, the two sets of pressing plates 54 will contact the packaging bag before the cutter 3. As the two sets of pressing plates 54 continue to move downward, the four sets of springs 53 and the four sets of damping rods 52 will contract to flatten the two sides of the packaging bag. Since the four sets of springs 53 and the four sets of damping rods 52 have all contracted, the cutter 3 will come into contact with the packaging bag. The cutter 3 can be used to cut the edges of the packaging bag while it is being flattened.

[0030] Two sets of positioning blocks 55 are symmetrically fixedly connected to the bottom of the mounting plate 51. The top of the mounting bracket 2 is provided with two sets of positioning grooves 6 that are adapted to the positioning blocks 55. The two sets of positioning blocks 55 are respectively inserted into the two sets of positioning grooves 6.

[0031] In this embodiment, by inserting two sets of positioning blocks 55 into the interior of two sets of positioning slots 6, it is beneficial to position the mounting plate 51, thereby improving the accuracy and stability of the mounting plate 51.

[0032] The mounting plate 51 is threaded with three sets of first bolts 7, and the mounting bracket 2 is provided with three sets of first mounting slots that are compatible with the first bolts 7. The mounting plate 51 and the mounting bracket 2 are installed by the cooperation of the first bolts 7 and the first mounting slots, which facilitates the installation and disassembly of the flattening mechanism 5.

[0033] The reciprocating lifting mechanism 4 includes a dual-axis motor 41, two sets of rotating rods 42, two sets of bearing seats 43, two sets of turntables 44, two sets of short connecting rods 45, two sets of connecting plates 46, and two sets of long connecting rods 47. The dual-axis motor 41 is fixedly installed on the top of the portal frame 1. Both ends of the dual-axis motor 41 are fixedly connected to the two sets of rotating rods 42 respectively. One end of the two sets of rotating rods 42 is fixedly connected to the two sets of turntables 44 respectively. The two sets of short connecting rods 45 are fixedly connected to one end of the two sets of turntables 44 respectively. One end of the two sets of connecting plates 46 is rotatably installed on the outer wall of the two sets of short connecting rods 45 respectively. The other end of the two sets of connecting plates 46 is rotatably installed on the outer wall of the two sets of long connecting rods 47 respectively. The two sets of long connecting rods 47 are fixedly connected to both sides of the mounting frame 2 respectively. Sliding grooves adapted to the long connecting rods 47 are opened on both sides of the portal frame 1. The two sets of long connecting rods 47 are located inside the two sets of sliding grooves respectively.

[0034] In this embodiment, the two ends of the dual-axis motor 41 drive the rotating rod 42 connected to it to rotate, the rotating rod 42 drives the turntable 44 connected to it to rotate, and the turntable 44 drives the short connecting rod 45 connected to it to rotate. Since the two ends of the connecting plate 46 are rotatably connected to the short connecting rod 45 and the long connecting rod 47 respectively, and the long connecting rod 47 is located inside the sliding groove, the sliding groove can limit the long connecting rod 47, that is, the long connecting rod 47 will reciprocate and lift inside the sliding groove, thereby driving the mounting frame 2 to reciprocate and lift.

[0035] Specifically, the dual-shaft motor 41 can be a YLJ60-2-2 dual-output shaft asynchronous motor, which is a finished product in the existing technology and will not be described in detail here;

[0036] Two sets of bearing seats 43 are symmetrically fixedly installed on the top two sides of the portal frame 1, and one end of each set of rotating rods 42 passes through the bearings inside the two sets of bearing seats 43 respectively.

[0037] In this embodiment, the outer wall of the rotating rod 42 is connected to the inner ring of the bearing seat 43, which supports the rotating rod 42 while ensuring its smooth rotation.

[0038] The mounting bracket 2 has three sets of second bolts 8 threadedly connected to one side. The cutter 3 has three sets of second mounting slots that are compatible with the second bolts 8. The mounting bracket 2 and the cutter 3 are installed by the cooperation of the second bolts 8 and the second mounting slots, which facilitates the installation and disassembly of the cutter 3.

[0039] Working principle: When this utility model is used, the reciprocating lifting mechanism 4 drives the mounting frame 2 to reciprocate and lift. The mounting frame 2 can drive the cutter 3 and the flattening mechanism 5 to lift. Since the flattening mechanism 5 is located below the cutter 3, the two sets of pressing plates 54 in the flattening mechanism 5 will contact the packaging bag before the cutter 3. As the two sets of pressing plates 54 continue to move downward, the four sets of springs 53 and the four sets of damping rods 52 will contract, flattening the two sides of the packaging bag. At the same time, the cutter 3 can be used to cut the edges of the packaging bag. The flattening effect is good, the operation is convenient, and the processing efficiency of the packaging bag is improved.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plastic packaging bag edge-cutting machine, characterized in that, include: A portal frame (1) has a mounting frame (2) that can be raised and lowered inside, and a cutter (3) is installed inside the mounting frame (2); The reciprocating lifting mechanism (4) is installed on the gantry frame (1). The reciprocating lifting mechanism (4) drives the mounting frame (2) to lift and lower, thereby causing the cutter (3) to lift and lower. The flattening mechanism (5) is set on the mounting frame (2) and is used to flatten the packaging bag. The bottom of the flattening mechanism (5) is located below the cutter (3). When the mounting frame (2) is raised or lowered, it will drive the flattening mechanism (5) to rise or fall. The flattening mechanism (5) includes a mounting plate (51), four sets of damping rods (52), four sets of springs (53), two sets of pressing plates (54), and two sets of positioning blocks (55).

2. The plastic packaging bag cutting machine according to claim 1, characterized in that: The mounting plate (51) is installed on the top of the mounting frame (2). The four sets of damping rods (52) are symmetrically fixedly installed on the bottom of the mounting plate (51). The four sets of damping rods (52) are located on both sides of the cutter (3). The bottom ends of the four sets of damping rods (52) are fixedly connected to the two sets of pressure plates (54). The four sets of springs (53) are respectively sleeved on the outer wall of the four sets of damping rods (52).

3. The plastic packaging bag cutting machine according to claim 2, characterized in that: The two sets of positioning blocks (55) are symmetrically fixedly connected to the bottom of the mounting plate (51). The top of the mounting bracket (2) is provided with two sets of positioning grooves (6) that are adapted to the positioning blocks (55). The two sets of positioning blocks (55) are respectively inserted into the two sets of positioning grooves (6).

4. A plastic packaging bag edge-cutting machine according to claim 3, characterized in that: The mounting plate (51) is threaded with three sets of first bolts (7), and the mounting bracket (2) is provided with three sets of first mounting slots that are compatible with the first bolts (7). The mounting plate (51) and the mounting bracket (2) are installed by the cooperation of the first bolts (7) and the first mounting slots.

5. A plastic packaging bag edge-cutting machine according to claim 1, characterized in that: The reciprocating lifting mechanism (4) includes a dual-axis motor (41), two sets of rotating rods (42), two sets of bearing seats (43), two sets of turntables (44), two sets of short connecting rods (45), two sets of connecting plates (46), and two sets of long connecting rods (47). The dual-axis motor (41) is fixedly installed on the top of the portal frame (1). The two ends of the dual-axis motor (41) are respectively fixedly connected to the two sets of rotating rods (42). One end of the two sets of rotating rods (42) is respectively fixedly connected to the two sets of turntables (44). The two sets of short connecting rods (45) are respectively fixedly connected to one end of the two sets of turntables (44). One end of the two sets of connecting plates (46) is respectively rotatably installed on the outer wall of the two sets of short connecting rods (45). The other end of the two sets of connecting plates (46) is respectively rotatably installed on the outer wall of the two sets of long connecting rods (47). The two sets of long connecting rods (47) are respectively fixedly connected to both sides of the mounting frame (2).

6. A plastic packaging bag edge-cutting machine according to claim 5, characterized in that: The portal frame (1) has sliding grooves on both sides that are adapted to the long connecting rods (47), and the two sets of long connecting rods (47) are located inside the two sets of sliding grooves respectively.

7. A plastic packaging bag edge-cutting machine according to claim 5, characterized in that: The two sets of bearing seats (43) are symmetrically fixed on the top sides of the portal frame (1), and one end of the two sets of rotating rods (42) passes through the bearings inside the two sets of bearing seats (43).

8. A plastic packaging bag edge-cutting machine according to claim 1, characterized in that: The mounting bracket (2) has three sets of second bolts (8) threaded on one side. The cutter (3) has three sets of second mounting slots that are compatible with the second bolts (8). The mounting bracket (2) and the cutter (3) are installed by the cooperation of the second bolts (8) and the second mounting slots.

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