Pneumatic upper cutting structure of plastic bag splitting machine

Abstract

The utility model relates to the technical field of plastic bag production, and discloses a pneumatic upper cutting structure of a plastic bag splitting machine. The pneumatic upper cutting structure of the plastic bag splitting machine comprises a limiting mechanism, the limiting mechanism comprises a connecting rod, a connecting column is fixedly installed on the connecting rod, a limiting block is installed on the connecting column in a penetrating mode, a fixing bolt is installed on the limiting block in a penetrating mode, and an adjusting mechanism is fixedly installed on the connecting rod. According to the plastic bag cutting device, the plastic bag is supported by the protruding structures of the limiting blocks when passing through the position below the blade through the limiting blocks installed on the two sides of the blade, the cutting position of the blade is located at the protruding structures of the limiting blocks, the deformation degree of the plastic bag during cutting can be reduced through the limiting blocks on the two sides of the blade, and the cutting effect of the blade is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic bag production, in particular to a pneumatic upper cutting structure of a plastic bag slitting machine. Background Art

[0002] Plastic bags are essential items in people's daily lives and are often used to hold other items. They are widely used because of their low cost, extremely light weight, large capacity, and easy storage. In the production process of existing plastic bags, cutting is required, so a plastic bag slitting machine for cutting plastic bags was born.

[0003] The existing Chinese utility model patent with reference announcement number CN213356464U discloses a plastic bag slitting machine, wherein cylinders are connected to both sides of the upper end of the base, the output end of the cylinder is connected to a bottom plate, one side of the bottom plate is connected to a sliding structure, the upper end of the bottom plate is connected to a side plate, a first motor is installed outside the side plate on one side, the output end of the first motor is connected to a first rotating shaft, and a plurality of groups of cutting blades are equidistantly installed on the first rotating shaft, a cross bar is also connected between the two groups of side plates, and the cross bar is located on one side of the first rotating shaft; the utility model is driven downward by the cross bar, so that the downward pressing block of the mounting plate presses on the plastic bag, the spring is compressed to apply pressure and the buffer space is elastic so that the downward pressing will not be too hard, so that the upper end of the plastic bag will not be wrinkled and curling after cutting is prevented, and the sponge pad at the lower end of the pressing block prevents the sponge from being scratched, so that each group of plastic bags after being cut can be kept neatly rolled up when rolling up, and the quality of the rolling is guaranteed, which is suitable for wide promotion.

[0004] Due to the relatively soft material of plastic bags, the force of the blade may not be transmitted to the plastic bag due to elastic deformation during cutting, thus affecting the cutting effect. The cutting depth of the blade is generally adjusted by rotating the threaded rod, which is very inconvenient. In addition, the threaded rod may become stuck and unable to be adjusted due to rust and other reasons during long-term use. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a pneumatic cutting structure for a plastic bag slitting machine, which has the advantages of not affecting the cutting effect due to the soft nature of the plastic bag and being able to easily adjust the cutting depth of the blade, thereby solving the above-mentioned technical problems.

[0007] (II) Technical solution

[0008] To achieve the above object, the utility model provides the following technical solutions: a pneumatic upper cutting structure of a plastic bag slitting machine, comprising: a limiting mechanism, the limiting mechanism comprising a connecting rod, a connecting column is fixedly installed on the connecting rod, a limiting block is inserted and installed on the connecting column, a fixing bolt is inserted and installed on the limiting block, and an adjustment mechanism is fixedly installed on the connecting rod;

[0009] The adjustment mechanism includes a limit frame fixedly installed above the connecting rod, an upper cover fixedly installed above the limit frame, and a pneumatic piston fixedly installed on the bottom surface of the upper cover, a receiving block fixedly installed at the lower end of the pneumatic piston, and a receiving plate fixedly installed below the receiving block, and a cutting mechanism is inserted and installed on the receiving block; the setting of the pneumatic piston can facilitate the adjustment of the cutting depth of the blade.

[0010] As an optimal technical solution of the utility model, the cutting mechanism includes a connecting shaft inserted and installed on the receiving block, motors are inserted and installed at both ends of the connecting shaft, blades are inserted and installed on the connecting shaft, and a fixing ring is inserted and installed on the connecting shaft; the motors inserted and installed at both ends of the connecting shaft can drive the connecting shaft to rotate.

[0011] As a preferred technical solution of the utility model, the blades are equidistantly interspersed above the connecting shaft, the fixing rings are installed on the front and rear sides of each blade, the blades are fixedly connected to the connecting shaft through the fixing rings, and the motor is fixedly installed above the receiving plate; the blades are fixedly connected to the connecting shaft through the fixing rings so that the blades can rotate driven by the connecting shaft.

[0012] As the preferred technical solution of the utility model, the connecting rod is installed symmetrically on the front and rear sides of the connecting column with the center of the connecting shaft as the reference, and the connecting column is installed symmetrically between the two connecting rods with the center of the connecting rod as the reference; the setting of the connecting column can fix the relative position between the two connecting rods.

[0013] As a preferred technical solution of the utility model, a protruding structure is arranged at the top center of the limit block, and a cylindrical opening which transversely penetrates the limit block is symmetrically arranged on the limit block with the center of the limit block as a reference, so that a sliding connection is formed between the limit block and the connecting column; the cylindrical opening on the limit block enables the limit block to be installed through the two connecting columns to prevent the limit block from rotating.

[0014] As a preferred technical solution of the utility model, the limit frame is a hollow structure, the receiving block is inserted and installed inside the limit frame, and a sliding connection is formed between the receiving block and the limit frame, and a cylindrical opening structure is provided at the center of the receiving block, which transversely penetrates the front and rear surfaces of the receiving block; the cylindrical opening structure provided on the receiving block can allow the connecting shaft to be inserted and installed.

[0015] As a preferred technical solution of the utility model, the top of the receiving block is fixedly connected to the movable end of the pneumatic piston, and the bottom of the receiving block is fixedly connected to the receiving plate; the fixed connection between the bottom of the receiving block and the receiving plate can fix the relative position between the motor and the receiving block.

[0016] Compared with the prior art, the utility model provides a pneumatic upper cutting structure of a plastic bag slitting machine, which has the following beneficial effects:

[0017] 1. The utility model uses the limit blocks installed on both sides of the blade to support the plastic bag by the raised structure of the limit blocks when the plastic bag passes under the blade. Since the cutting position of the blade is located at the raised structure of the limit blocks, and the limit blocks on both sides of the blade can reduce the deformation of the plastic bag during cutting, so as to improve the cutting effect of the blade.

[0018] 2. The utility model controls the elongation of the movable end of the pneumatic piston by the gas content inside the pneumatic piston through the setting of the pneumatic piston, so that the vertical position of the receiving block at the lower end of the pneumatic piston changes, and the connecting shaft is driven by the receiving block to change the position of the blade on the connecting shaft. This method of adjusting the position of the blade by the amount of air content inside the pneumatic piston can save the user's workload and will not cause jamming due to rust. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the limiting mechanism of the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the adjustment mechanism of the utility model;

[0022] Figure 4 This is a schematic diagram of the cutting mechanism structure of the utility model;

[0023] Among them: 101, connecting rod; 102, connecting column; 103, limiting block; 104, fixing bolt; 201, limiting frame; 202, upper cover; 203, pneumatic piston; 204, receiving block; 205, receiving plate; 301, connecting shaft; 302, motor; 303, blade; 304, fixing ring. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0025] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] Embodiment 1:

[0028] See also Figure 1 — Figure 4 In this embodiment, a pneumatic upper cutting structure of a plastic bag slitting machine includes: a limiting mechanism, the limiting mechanism includes a connecting rod 101, a connecting column 102 is fixedly installed on the connecting rod 101, a limiting block 103 is inserted and installed on the connecting column 102, a sliding connection is formed between the limiting block 103 and the connecting column 102, a fixing bolt 104 is inserted and installed on the limiting block 103, and an adjustment mechanism is fixedly installed on the connecting rod 101.

[0029] Specifically, the sliding connection between the limit block 103 and the connecting column 102 can facilitate adjustment of the relative position between the limit block 103 and the connecting column 102 to adapt to different cutting widths.

[0030] The connecting rod 101 is installed symmetrically at the front and rear sides of the connecting column 102 with the center of the connecting shaft 301 as the reference, and the connecting column 102 is installed symmetrically between the two connecting rods 101 with the center of the connecting rod 101 as the reference.

[0031] Specifically, the symmetrically arranged connecting posts 102 can facilitate keeping the relative positions of the two connecting rods 101 fixed.

[0032] A protruding structure is arranged at the center of the top of the limiting block 103 , and a columnar opening which penetrates the limiting block 103 laterally is arranged symmetrically on the limiting block 103 with the center of the limiting block 103 as a reference.

[0033] Specifically, the raised structure disposed at the top center of the limiting block 103 can cause the plastic bag to bend on the limiting block 103 , so that the blade 303 can cut the plastic bag.

[0034] Embodiment 2:

[0035] See also Figure 1 — Figure 4 In this embodiment, the adjustment mechanism includes a limit frame 201 fixedly installed above the connecting rod 101, an upper cover 202 is fixedly installed above the limit frame 201, and a pneumatic piston 203 is fixedly installed on the bottom surface of the upper cover 202, a receiving block 204 is fixedly installed at the lower end of the pneumatic piston 203, and a receiving plate 205 is fixedly installed below the receiving block 204, and a cutting mechanism is inserted into the receiving block 204.

[0036] Specifically, the arrangement of the pneumatic piston 203 can facilitate the adjustment of the relative position between the receiving block 204 and the limiting frame 201 .

[0037] The limit frame 201 is a hollow structure, and the receiving block 204 is installed inside the limit frame 201, and a sliding connection is formed between the receiving block 204 and the limit frame 201. The center of the receiving block 204 is provided with a cylindrical opening structure that transversely penetrates the front and rear surfaces of the receiving block 204. The top of the receiving block 204 is fixedly connected to the movable end of the pneumatic piston 203, and the bottom of the receiving block 204 is fixedly connected to the receiving plate 205.

[0038] Specifically, the sliding connection between the receiving block 204 and the limiting frame 201 can facilitate the adjustment of the relative position between the receiving block 204 and the limiting frame 201. The center of the receiving block 204 is provided with a cylindrical opening structure that transversely penetrates the front and rear surfaces of the receiving block 204, which can facilitate the insertion and installation of the connecting shaft 301 in the receiving block 204.

[0039] The cutting mechanism includes a connecting shaft 301 inserted and installed on the receiving block 204 , motors 302 are inserted and installed at both ends of the connecting shaft 301 , a blade 303 is inserted and installed on the connecting shaft 301 , and a fixing ring 304 is inserted and installed on the connecting shaft 301 .

[0040] Specifically, the fixing ring 304 inserted and installed on the connecting shaft 301 can facilitate the blade 303 to form a fixed connection with the connecting shaft 301, and can facilitate the adjustment of the relative position between the blade 303 and the connecting shaft 301.

[0041] The blades 303 are equidistantly inserted above the connecting shaft 301 , and the fixing rings 304 are installed on the front and rear sides of each blade 303 . The blades 303 are fixedly connected to the connecting shaft 301 via the fixing rings 304 , and the motor 302 is fixedly installed above the receiving plate 205 .

[0042] Specifically, the blade 303 is fixedly connected to the connecting shaft 301 via the fixing ring 304 so that the connecting shaft 301 can drive the blade 303 to rotate when rotating to achieve a cutting effect.

[0043] When in use, it is necessary to adjust the relative position between the blade 303 and the connecting shaft 301 according to the cutting width of the plastic bag, and cancel the fixed state between the limit block 103 and the connecting column 102 by loosening the fixing bolt 104, and then adjust the position of the limit block 103 by sliding so that the limit block 103 is located on both sides of the blade 303, and then turn on the motor 302, the motor 302 will rotate the connecting shaft 301, and the connecting shaft 301 will drive the blade 303 to rotate, and then control the elongation of the movable end of the pneumatic piston 203 by controlling the air content inside the cylinder of the pneumatic piston 203. When the pneumatic piston 203 is extended, it will drive the receiving block 204 to change its position. 4 and the receiving plate 205 under the receiving block 204, so that the positions of the connecting shaft 301 and the motor 302 are changed at the same time to adjust the vertical position of the blade 303, and the motor 302 mirror-interspersed on the connecting shaft 301 can provide a large torque for the connecting shaft 301 during cutting, so as to avoid the situation that the blade 303 cannot rotate during cutting. When the plastic bag passes through the limit block 103, the convex structure of the limit block 103 will prop up the plastic bag, so that the plastic bag is bent at the cutting position of the blade 303, and the receiving blocks 204 on both sides of the blade 303 can provide support force on both sides of the cutting position of the plastic bag to reduce the degree of elastic deformation of the plastic bag during cutting, so as to facilitate cutting by the blade 303.

[0044] 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 pneumatic upper cutting structure of a plastic bag slitting machine, characterized in that: include: A limiting mechanism, the limiting mechanism comprising a connecting rod (101), a connecting column (102) fixedly mounted on the connecting rod (101), a limiting block (103) inserted and mounted on the connecting column (102), a fixing bolt (104) inserted and mounted on the limiting block (103), and an adjustment mechanism fixedly mounted on the connecting rod (101); The adjustment mechanism comprises a limit frame (201) fixedly mounted above the connecting rod (101); an upper cover (202) is fixedly mounted above the limit frame (201); a pneumatic piston (203) is fixedly mounted on the bottom surface of the upper cover (202); a receiving block (204) is fixedly mounted at the lower end of the pneumatic piston (203); a receiving plate (205) is fixedly mounted below the receiving block (204); and a cutting mechanism is inserted and mounted on the receiving block (204).

2. The pneumatic upper cutting structure of a plastic bag slitting machine according to claim 1, characterized in that: The cutting mechanism comprises a connecting shaft (301) inserted and installed on the receiving block (204), motors (302) are inserted and installed at both ends of the connecting shaft (301), a blade (303) is inserted and installed on the connecting shaft (301), and a fixing ring (304) is inserted and installed on the connecting shaft (301).

3. The pneumatic upper cutting structure of a plastic bag slitting machine according to claim 2, characterized in that: The blades (303) are equidistantly inserted above the connecting shaft (301); the fixing rings (304) are installed on the front and rear sides of each blade (303); the blades (303) are fixedly connected to the connecting shaft (301) via the fixing rings (304); and the motor (302) is fixedly installed above the receiving plate (205).

4. The pneumatic upper cutting structure of a plastic bag slitting machine according to claim 1, characterized in that: The connecting rod (101) is symmetrically installed on the front and rear sides of the connecting column (102) with the center of the connecting shaft (301) as the reference, and the connecting column (102) is symmetrically installed between the two connecting rods (101) with the center of the connecting rod (101) as the reference.

5. The pneumatic upper cutting structure of a plastic bag slitting machine according to claim 1, characterized in that: A protruding structure is arranged at the top center of the limit block (103), and a columnar opening which laterally penetrates the limit block (103) is symmetrically arranged on the limit block (103) with the center of the limit block (103) as a reference, so that a sliding connection is formed between the limit block (103) and the connecting column (102).

6. The pneumatic upper cutting structure of a plastic bag slitting machine according to claim 1, characterized in that: The limiting frame (201) is a hollow structure, the receiving block (204) is inserted and installed inside the limiting frame (201), and a sliding connection is formed between the receiving block (204) and the limiting frame (201), and a columnar opening structure is arranged at the center of the receiving block (204) and horizontally penetrates the front and rear surfaces of the receiving block (204).

7. The pneumatic upper cutting structure of a plastic bag slitting machine according to claim 1, characterized in that: The top of the receiving block (204) is fixedly connected to the movable end of the pneumatic piston (203), and the bottom of the receiving block (204) is fixedly connected to the receiving plate (205).

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