Cutting device for plastic bag production

Abstract

The cutting device for plastic bag production comprises a supporting table, two supporting plates are fixedly installed on the top of the supporting table, sliding grooves are formed in the two supporting plates, two I-shaped clamping plates are installed in the sliding grooves in a clamped and sliding mode, and the two I-shaped clamping plates are fixedly installed on the top of the supporting table. A mounting roller is movably mounted in the two I-shaped clamping plates through bearings, two mounting frames are movably mounted in the mounting roller, a plurality of positioning springs are fixedly mounted in the two mounting frames, and upper cutting knife dies are fixedly mounted at the other ends of the positioning springs; through the arranged air suction pump, during operation, the air suction pump forms negative pressure on the outer sides of the hollow roller and the sponge roller sleeve through the communicating pipe and the corrugated hose so that a cut bag can be tightly attached, loosening and tilting are avoided in cooperation with clamping of the attaching roller and the sponge roller sleeve, then the cutting quality is stabilized, burrs and damage are avoided, and the rate of finished products is increased; and the cutting effect is stabilized.

Description

Technical Field

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

[0002] Plastic bags are bags made of plastic (commonly used plastics include polypropylene, polyester, nylon, etc.) as the main raw material. They are indispensable items in people's daily lives and are often used to carry other items. They are widely used because of their advantages of being cheap, extremely light, large in capacity, and easy to store. However, due to their shortcomings of extremely long degradation cycle and difficult disposal, some countries have banned their production and use. Since June 1, 2008, China has implemented a plastic restriction order: a paid use system for plastic shopping bags has been implemented in all supermarkets, shopping malls, bazaars and other commodity retail places, and plastic shopping bags shall not be provided free of charge.

[0003] In the production process of continuous roll bags, they need to be cut in points. In most cases, when cutting, the traditional cutting blade is easily damaged during the moving cutting process. Since the plastic bag and the support surface of the cutting surface are not flat, certain damage or burrs will occur during cutting, affecting the yield rate, and it is inconvenient to change the tool adjustment. Based on this, we propose a cutting device for plastic bag production. Utility Model Content

[0004] The purpose of the utility model is to provide a cutting device for producing plastic bags 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 plastic bag production, comprising a support table, two support plates are fixedly installed on the top of the support table, sliding grooves are opened inside the two support plates, two I-shaped clamps are slidably installed inside the sliding grooves, mounting rollers are movably installed inside the two I-shaped clamps through bearings, two mounting frames are movably installed inside the mounting rollers, a number of positioning springs are fixedly installed inside the two mounting frames, an upper cutting knife mold is fixedly installed on the other end of the positioning spring, mounting bolts are movably installed on both ends of the two mounting frames, a servo motor is fixedly installed on one end of the mounting roller, a hollow hollow roller is movably installed inside the other of the two I-shaped clamps through bearings, the hollow hollow One end of the roller and the mounting roller are both installed with a transmission gear through bolts, and two elastic hollow supports are fixedly installed inside the hollow roller, and a lower cutting knife mold is fixedly installed on the other end of the two elastic hollow supports, and a sponge roller sleeve is sleeved on the outer side of the hollow roller, and a sealed bearing component is movably installed inside one end of the hollow roller, and a connecting pipe is sleeved inside the sealed bearing component, and the other end of the connecting pipe is connected to a corrugated hose, and the other end of the corrugated hose is connected to an air suction pump, two groups of sliding rods are fixedly installed on opposite sides of the two support plates, and two groups of rings are movably sleeved on the outer sides of the two groups of sliding rods, and limiting rollers are movably installed on opposite sides of the two groups of rings, and two groups of adjustment holes are opened inside the two support plates, and fitting rollers are movably arranged on both sides of the hollow roller.

[0006] Preferably, the specifications and dimensions of the upper cutting knife mold are matched with the specifications and dimensions of the installation frame, and the installation bolt threaded connection passes through the installation roller and extends to the outside of the installation frame.

[0007] Preferably, the servo motor is fixedly mounted on the outer side of the I-shaped clamp through a mounting frame, and the suction pump is fixedly mounted on the top of the support platform.

[0008] Preferably, the specifications and dimensions of the upper cutting knife mold are matched with the specifications and dimensions of the lower cutting knife mold, and a notch matched with the lower cutting knife mold is provided inside the sponge roller sleeve.

[0009] Preferably, the collar is fixed to the outer side of the slide rod by means of a top screw, and both ends of the laminating roller are fixed to the opposite sides of the I-shaped clamp by means of axle seats.

[0010] Preferably, the two groups of adjustment holes are located on both sides of the sliding groove, the adjustment holes are linearly and evenly arranged inside the support plate, and bolts are inserted inside the I-shaped clamp.

[0011] Compared with the prior art, the beneficial effect of the utility model is as follows: when the device is in use, the user first passes the continuous roll to be cut between the installation roller and the hollow hollow roller, is located on the opposite side of the limiting roller, and passes it on the opposite side of the bonding roller and the hollow hollow roller, and the other end is connected to the winding roller, and the servo motor is started to rotate to drive the installation roller to rotate. The installation roller drives the hollow hollow roller to rotate on the same side through the transmission gear to clamp and deliver the continuous roll. When cutting, the upper cutting knife mold and the lower cutting knife mold are in corresponding positions. The suction pump is started at the same time to extract the airflow through the connecting pipe and the corrugated hose, and the airflow inside the hollow hollow roller is extracted. Due to the hollow setting of the hollow hollow roller and the sponge roller cover, the continuous roll is attached to the outside of the sponge roller cover under the action of airflow and air pressure, and is tightly attached under the clamping of the bonding roller and the sponge roller cover to avoid irregularities. As the rotation proceeds, the continuous roll bag is squeezed and cut by the upper cutting knife mold and the lower cutting knife mold;

[0012] By setting up the suction pump, during operation, the suction pump forms negative pressure on the outside of the hollow roller and the sponge roller cover through the connecting pipe and the corrugated hose, so that the cut bags fit tightly, and cooperate with the clamping of the fitting roller and the sponge roller cover to avoid loosening and warping, thereby stabilizing the cutting quality, avoiding burrs and breakage, increasing the yield rate, and stabilizing the cutting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the front three-dimensional appearance structure of the utility model.

[0014] Figure 2 It is a right side sectional structural schematic diagram of the utility model.

[0015] Figure 3 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the hollow roller of the utility model.

[0017] In the figure: 1. support table; 2. connecting pipe; 3. support plate; 4. transmission gear; 5. fitting roller; 6. I-shaped clamp; 7. mounting roller; 8. upper cutting knife mold; 9. servo motor; 10. slide bar; 11. limit roller; 12. adjustment hole; 13. sliding groove; 14. suction pump; 15. corrugated hose; 16. sleeve ring; 17. mounting frame; 18. positioning spring; 19. mounting bolt; 20. lower cutting knife mold; 21. elastic hollow support; 22. hollow roller; 23. sealing bearing; 24. sponge roller cover. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-Figure 4 The utility model provides a technical solution: a cutting device for plastic bag production, comprising a support table 1, two support plates 3 are fixedly installed on the top of the support table 1, sliding grooves 13 are provided inside the two support plates 3, two I-shaped clamps 6 are clamped and slidably installed inside the sliding grooves 13, mounting rollers 7 are movably installed inside the two I-shaped clamps 6 through bearings, two mounting frames 17 are movably installed inside the mounting rollers 7, a plurality of positioning springs 18 are fixedly installed inside the two mounting frames 17, an upper cutting knife mold 8 is fixedly installed on the other end of the positioning spring 18, mounting bolts 19 are movably installed at both ends of the two mounting frames 17, a servo motor 9 is fixedly installed on one end of the mounting roller 7, a hollow hollow roller 22 is movably installed inside the other of the two I-shaped clamps 6 through bearings, and the hollow hollow roller 22 and one end of the mounting roller 7 are movably installed. Transmission gears 4 are installed by bolts, two elastic hollow supports 21 are fixedly installed inside the hollow hollow roller 22, and the other ends of the two elastic hollow supports 21 are fixedly installed with a lower cutting knife mold 20, and the outer side of the hollow hollow roller 22 is sleeved with a sponge roller sleeve 24, and a sealed bearing member 23 is movably installed inside one end of the hollow hollow roller 22, and a connecting pipe 2 is sleeved inside the sealed bearing member 23, and the other end of the connecting pipe 2 is connected to a corrugated hose 15, and the other end of the corrugated hose 15 is connected to an air suction pump 14, two groups of sliding rods 10 are fixedly installed on the opposite sides of the two support plates 3, and two groups of rings 16 are movably sleeved on the outer sides of the two groups of sliding rods 10, and limiting rollers 11 are movably installed on the opposite sides of the two groups of rings 16, and two groups of adjustment holes 12 are opened inside the two support plates 3, and fitting rollers 5 are movably arranged on both sides of the hollow hollow roller 22.

[0020] The working principle of the above technical solution is as follows: when in use, the user first passes the web to be cut between the installation roller 7 and the hollow hollow roller 22, located on the opposite side of the limiting roller 11, and passes it on the opposite side of the laminating roller 5 and the hollow hollow roller 22, and the other end is connected to the winding roller, and the servo motor 9 is started to rotate to drive the installation roller 7 to rotate. The installation roller 7 drives the hollow hollow roller 22 to rotate on the same side through the transmission gear 4 to clamp and deliver the web. When cutting, the upper cutting knife mold 8 and the lower cutting knife mold 20 are in corresponding positions. At the same time, the suction pump 14 is started to draw out the airflow through the connecting pipe 2 and the corrugated hose 15, and the airflow inside the hollow roller 22 is drawn out. Due to the hollow setting of the hollow roller 22 and the sponge roller cover 24, the roll-up belt is attached to the outside of the sponge roller cover 24 under the action of airflow and air pressure, and is tightly attached under the clamping of the laminating roller 5 and the sponge roller cover 24 to avoid irregularities. As the rotation proceeds, the upper cutting knife mold 8 and the lower cutting knife mold 20 are squeezed with the roll bag to cut it.

[0021] In another embodiment, Figure 1-Figure 3 As shown, the specifications and dimensions of the upper cutting knife mold 8 are matched with the specifications and dimensions of the mounting frame 17 , and the mounting bolts 19 are threadedly connected to penetrate the mounting roller 7 and extend to the outside of the mounting frame 17 .

[0022] The mounting frame 17 can be disassembled by installing the bolts 19 and then different cutters of the upper cutting knife mold 8 can be replaced according to different operation requirements, with good use effect.

[0023] In another embodiment, Figure 1-Figure 4 As shown, the servo motor 9 is fixedly mounted on the outer side of the I-shaped clamp plate 6 through a mounting frame, and the suction pump 14 is fixedly mounted on the top of the support platform 1.

[0024] By setting up the suction pump 14, during operation, the suction pump 14 forms negative pressure on the outer sides of the hollow roller 22 and the sponge roller cover 24 through the connecting pipe 2 and the corrugated hose 15, so that the cut bags fit tightly, and cooperate with the clamping of the fitting roller 5 and the sponge roller cover 24 to avoid loosening and warping, thereby stabilizing the cutting quality, avoiding burrs and breakage, increasing the yield rate, and stabilizing the cutting effect. The servo motor 9 is installed on the outer side of the I-shaped clamp 6 to facilitate driving the structure to operate.

[0025] In another embodiment, Figure 1-Figure 4 As shown, the specifications and dimensions of the upper cutting knife mold 8 are matched with the specifications and dimensions of the lower cutting knife mold 20 , and a notch matched with the lower cutting knife mold 20 is provided inside the sponge roller cover 24 .

[0026] The upper cutting knife mold 8 and the lower cutting knife mold 20 are butt-jointed for cutting, which stabilizes the overall structure, increases the use effect, and facilitates cutting efficiency. The angular velocities of the upper cutting knife mold 8 and the lower cutting knife mold 20 are consistent to facilitate corresponding cutting.

[0027] In another embodiment, Figure 1 and Figure 2 As shown, the collar 16 is fixed to the outside of the slide rod 10 by means of a top screw, and both ends of the laminating roller 5 are fixed to the opposite sides of the I-shaped clamp plate 6 by means of axle seats.

[0028] The collar 16 fixes the position of the limiting roller 11, so as to limit the two sides when cutting bags of different widths to avoid excessive shaking.

[0029] In another embodiment, Figure 1 and Figure 2 As shown, two groups of adjustment holes 12 are located on both sides of the sliding groove 13 , and the adjustment holes 12 are linearly and evenly arranged inside the support plate 3 , and bolts are inserted inside the I-shaped clamp plate 6 .

[0030] By setting up multiple adjustment holes 12, the position of the I-shaped clamp 6 can be adjusted as needed, thereby changing the position of the mounting roller 7 and the hollow roller 22, and at the same time replacing the transmission gears 4 of different sizes, so that the cutting depth between the upper cutting knife mold 8 and the lower cutting knife mold 20 can be controlled, which is convenient for adjustment according to different sizes.

[0031] 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 producing plastic bags, comprising a support table (1), characterized in that: Two support plates (3) are fixedly installed on the top of the support platform (1), and sliding grooves (13) are provided inside the two support plates (3). Two I-shaped clamps (6) are slidably installed inside the sliding grooves (13). Mounting rollers (7) are movably installed inside the two I-shaped clamps (6) through bearings. Two mounting frames (17) are movably installed inside the mounting rollers (7). A plurality of positioning springs (18) are fixedly installed inside the two mounting frames (17). An upper cutting knife mold (8) is fixedly installed on the other end of the positioning spring (18). Mounting bolts (19) are movably installed on both ends of the two mounting frames (17). A servo motor (9) is fixedly installed on one end of the mounting roller (7). A hollow hollow roller (22) is movably installed inside the other of the two I-shaped clamps (6) through bearings. Transmission gears (4) are installed on one end of the hollow hollow roller (22) and the mounting roller (7) through bolts. Two elastic hollow supports (21) are fixedly installed inside the roller (22), and the other ends of the two elastic hollow supports (21) are fixedly installed with a lower cutting knife mold (20), the outer side of the hollow hollow roller (22) is sleeved with a sponge roller sleeve (24), and a sealing bearing component (23) is movably installed inside one end of the hollow hollow roller (22), and the interior of the sealing bearing component (23) is sleeved with a connecting pipe (2), and the other end of the connecting pipe (2) is connected to a corrugated hose (1 5), the other end of the corrugated hose (15) is connected to an air suction pump (14), two groups of sliding rods (10) are fixedly installed on opposite sides of the two support plates (3), two groups of sleeve rings (16) are movably sleeved on the outer sides of the two groups of sliding rods (10), and limiting rollers (11) are movably installed on opposite sides of the two groups of sleeve rings (16), two groups of adjustment holes (12) are opened inside the two support plates (3), and laminating rollers (5) are movably arranged on both sides of the hollow hollow roller (22).

2. A cutting device for plastic bag production according to claim 1, characterized in that: The specifications and dimensions of the upper cutting knife mold (8) are compatible with the specifications and dimensions of the installation frame (17), and the installation bolts (19) are threadedly connected to penetrate the installation roller (7) and extend to the outside of the installation frame (17).

3. A cutting device for plastic bag production according to claim 1, characterized in that: The servo motor (9) is fixedly mounted on the outside of the I-shaped clamping plate (6) via a mounting frame, and the suction pump (14) is fixedly mounted on the top of the support platform (1).

4. A cutting device for plastic bag production according to claim 1, characterized in that: The specifications and dimensions of the upper cutting blade mold (8) are matched with the specifications and dimensions of the lower cutting blade mold (20), and a notch matched with the lower cutting blade mold (20) is arranged inside the sponge roller sleeve (24).

5. A cutting device for plastic bag production according to claim 1, characterized in that: The sleeve ring (16) is fixed to the outer side of the slide rod (10) through a top screw, and both ends of the laminating roller (5) are fixed to the opposite sides of the I-shaped clamping plate (6) through axle seats.

6. A cutting device for producing plastic bags according to claim 1, characterized in that: The two groups of adjustment holes (12) are located on both sides of the sliding groove (13), and the adjustment holes (12) are evenly arranged linearly inside the support plate (3). Bolts are inserted inside the I-shaped clamping plate (6).

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