A safe quantitative cutting device for bag making machine

Abstract

The utility model proposes a safe quantitative cutting device for a bag making machine, comprising a pedestal, a cutting table is arranged on the top surface of the pedestal, the cutting table cooperates with a sealing and cutting assembly lowered by an upper lifting cylinder to seal and cut a double-layer plastic belt from a locking mechanism, the sealing and cutting assembly can be raised and collected into the front end of a shell body, a meter wheel assembly is arranged on the bottom surface of the shell body for sliding connection with the upper plastic belt, a cooling assembly is built-in at the rear end of the shell body, and the plastic belt is rolled into a recovery wheel of a material receiving assembly after being sealed, cut and cooled; the device can process the plastic belt pulled out from a raw material roll, so as to heat-seal and pre-cut the plastic bag belts in batches, the device can accurately control the size of the plastic bag through the meter wheel assembly during operation, and a cooling assembly is arranged to cool down after heat sealing, so as to avoid the risk of the plastic bag belts sticking to each other when being recycled into rolls.

Description

Technical Field

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

[0002] There are many types of plastic bags, mainly divided into four types: high-pressure polyethylene, low-pressure polyethylene, polypropylene and polyvinyl chloride. They are widely used in food packaging, garbage bags, fresh-keeping bags, clothing packaging, gift bags and other fields. These plastic bags are usually made by plastic film bag making machines. The raw plastic strips need to be heat-sealed and pre-cut during the preparation process to limit the size of the plastic bags. However, the traditional heat-treated plastic bag strips are prone to sticking when rolled, and the bag size often has errors due to the matching problems of the machine body components. A new device is needed to solve the above problems. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a safe quantitative cutting device for a bag making machine, comprising a pedestal, a cutting table is arranged on the top surface of the pedestal, the cutting table cooperates with the sealing and cutting assembly lowered by the upper lifting cylinder to seal and cut the double-layer plastic belt from the edge locking mechanism, the sealing and cutting assembly can rise and be collected into the front end of the shell, the bottom surface of the shell is provided with a meter wheel assembly slidably connected to the upper plastic belt, the meter wheel assembly is electrically connected to the lifting cylinder controller, the rear end of the shell is built-in with a cooling assembly, and the plastic belt is rolled into the recovery wheel of the material receiving assembly after sealing, cutting and cooling.

[0004] Furthermore, the sealing and cutting assembly includes a base plate, the side surface of the base plate is slidably connected to the inner wall of the front shell chamber of the shell, the top surface of the base plate is connected to the output end of the lifting cylinder, the cylinder body of the lifting cylinder is installed on the top of the shell, the bottom surface of the base plate is connected to the groove strip, and the limiting plates on both sides of the heat sealing strip are inserted into the notch on the bottom surface of the groove strip. An electric heating strip is sandwiched between the two limiting plates. A pre-cut slice is fixed to the back of the groove strip by bolts, and the electric heating strip and the pre-cut slice respectively cooperate with the cutting table surface and the knife groove.

[0005] Furthermore, the cooling assembly includes a cooling motor, which is installed on the top of the shell. The output end of the cooling motor penetrates into the rear shell chamber of the shell and connects to the center of the spiral blade. A plurality of air inlet holes are opened on the top surface of the rear shell chamber, and a filter is provided at the exhaust port at the bottom of the rear shell chamber.

[0006] Furthermore, the edge locking mechanism includes a roller group, the shafts of the upper and lower roller groups are respectively rotatably connected to the side walls of the upper and lower cylinder shells of the pedestal, a driving motor is provided on the outer sides of the two cylinder shells, the output end of the driving motor is connected to the shafts of the roller group, and electric heating plates are provided on the two end faces of each roller in the roller group, the electric heating plates of the upper and lower corresponding rollers are fitted with the two sides of the double-layer plastic belt, and the upper and lower layers of the double-layer plastic belt are pulled out by two groups of raw material rolls vertically rotatably connected by the raw material rack.

[0007] Furthermore, the material receiving assembly comprises a recovery frame, a rotating shaft of the recovery frame is connected in series with a plurality of recovery wheels, one end of the rotating shaft is connected to an output end of a traction motor, and the traction motor is installed on the recovery frame.

[0008] Furthermore, the meter wheel assembly includes a pulley block, which is installed on the bottom surface of the shell, each pulley in the pulley block is in contact with the upper plastic belt, and a color mark is provided on the side of one of the pulleys in the pulley block, and the color mark matches the position of the sensor.

[0009] Furthermore, the bottom surface of the cutting table is vertically rotatably connected to the upper end of the threaded rod, the threaded rod body is threadedly connected to the cutting table surface, the lower end of the threaded rod passes through the table surface to connect the turntable, the bottom surface of the cutting table is vertically connected to a plurality of sliding rods, and the sliding rods are slidably connected to the sliding grooves on the cutting table surface.

[0010] The beneficial effects of the utility model are as follows: the utility model can process the plastic strip pulled out from the raw material roll, so as to heat-seal and pre-cut the plastic bag strips in batches; during the operation, the device accurately controls the size of the plastic bag through the meter wheel assembly, and is provided with a cooling assembly to cool down after heat sealing, thereby avoiding the risk of the plastic bag strips sticking to each other when they are recycled into rolls. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front view structural schematic diagram of the utility model;

[0012] Figure 2 It is a partial cross-sectional view of the front structure of the utility model;

[0013] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0014] Figure 4 It is a schematic diagram of the internal structure of the housing and its components in the utility model.

[0015] The accompanying drawings are marked as follows: 1. Base; 101. Cylinder shell; 2. Cutting table; 201. Knife groove; 202. Threaded rod; 203. Turntable; 204. Slide rod; 3. Lifting cylinder; 4. Shell; 401. Front shell chamber; 402. Rear shell chamber; 403. Air inlet; 5. Recovery wheel; 6. Base plate; 7. Groove strip; 8. Heat sealing strip; 801. Limiting piece; 9. Electric heating strip; 10. Pre-slice; 11. Cooling motor; 12. Spiral blade; 13. Filter; 14. Roller group; 1401. Electric heating plate; 15. Driving motor; 16. Raw material rack; 17. Raw material roll; 18. Recovery rack; 19. Traction motor; 20. Pulley group; 21. Sensor. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] The utility model is further described below in conjunction with the accompanying drawings:

[0019] like Figures 1 to 4 As shown, a safe quantitative cutting device for a bag making machine includes a base 1, a cutting table 2 is arranged on the top surface of the base 1, the bottom surface of the cutting table 2 is vertically rotatably connected to the upper end of a threaded rod 202, the rod body of the threaded rod 202 is threadedly connected to the table surface of the cutting table 2, the lower end of the threaded rod 202 passes through the table surface and is connected to a turntable 203, a plurality of sliding rods 204 are vertically connected to the bottom surface of the cutting table 2, the sliding rods 204 are slidably connected to the sliding grooves on the table surface of the cutting table 2, the cutting table 2 cooperates with the sealing and cutting assembly lowered by the upper lifting cylinder 3 to perform sealing and cutting operations on the double-layer plastic belt from the locking mechanism.

[0020] In this embodiment, the locking mechanism includes a roller group 14, the shafts of the upper and lower roller groups 14 are respectively rotatably connected to the side walls of the upper and lower cylinder shells 101 of the pedestal 1, a driving motor 15 is provided on the outer side of the two cylinder shells 101, and the output end of the driving motor 15 is connected to the shaft of the roller group 14. The two end faces of each roller in the roller group 14 are provided with electric heating plates 1401, and the electric heating plates 1401 corresponding to the two rollers above and below are fitted with the two sides of the double-layer plastic belt, and the upper and lower layers of the double-layer plastic belt are pulled out by two groups of raw material rolls 17 vertically rotatably connected by the raw material rack 16.

[0021] In this embodiment, the sealing and cutting assembly includes a substrate 6, the side surface of the substrate 6 is slidably connected to the inner wall of the front shell chamber 401 of the shell 4, the top surface of the substrate 6 is connected to the output end of the lifting cylinder 3, the cylinder body of the lifting cylinder 3 is installed on the top of the shell 4, the bottom surface of the substrate 6 is connected to the groove strip 7, and the limiting plates 801 on both sides of the heat sealing strip 8 are inserted into the notch on the bottom surface of the groove strip 7. An electric heating strip 9 is sandwiched between the two limiting plates 801. A pre-cutting sheet 10 is fixed to the back of the groove strip 7 by bolts. When the electric heating strip 9 moves downward to press the double-layer plastic belt to heat-seal it on the table surface of the cutting table 2, the saw teeth of the pre-cutting sheet 10 pierce the double-layer plastic belt and extend into the knife groove 201, thereby forming an easy-to-tear line on the belt surface; when the output end of the lifting cylinder 3 rises, the sealing and cutting assembly can be completely retracted into the front shell chamber 401.

[0022] In this embodiment, a meter wheel assembly is provided on the bottom surface of the shell 4 and is slidably connected to the upper plastic belt. The meter wheel assembly includes a pulley block 20. The pulley block 20 is installed on the bottom surface of the shell 4. Each pulley in the pulley block 20 is in contact with the upper plastic belt. A color mark is provided on the side of one of the pulleys in the pulley block 20. The color mark matches the position of the sensor 21. The sensor 21 is electrically connected to the controller of the lifting cylinder 3.

[0023] In this embodiment, a cooling assembly is built into the rear end of the housing 4, and the cooling assembly includes a cooling motor 11, which is mounted on the top of the housing 4. The output end of the cooling motor 11 penetrates the rear housing chamber 402 of the housing 4 and connects to the center of the spiral blade 12. A plurality of air inlet holes 403 are opened on the top surface of the rear housing chamber 402, and a filter 13 is provided at the exhaust port at the bottom of the rear housing chamber 402. After sealing, cutting and cooling, the plastic belt is rolled into the recovery wheel 5 of the material receiving assembly, and the recovery wheel 5 is connected in series to the rotating shaft of the recovery frame 18, and one end of the rotating shaft is connected to the output end of the traction motor 19, which is mounted on the recovery frame 18.

[0024] The working principle of the utility model is as follows:

[0025] The double-layer plastic belt is pulled from the raw material roll 17 to between the two roller groups 14, and the driving motor 15 drives the roller group 14 to rotate. The upper and lower corresponding electric heating plates 1401 heat-seal the side of the double-layer plastic belt, and then the double-layer plastic belt continues to move to the bottom of the sealing and cutting assembly. During this process, the pulley of the pulley group 20 in contact with the belt surface rotates, and the sensor 21 determines the advance length of the double-layer plastic belt surface according to the number of rotations of the pulley color code, thereby controlling the extension and retraction timing of the lifting cylinder 3. When the output end of the lifting cylinder 3 extends downward, the electric heating strip 9 moves downward to press the double-layer plastic belt on the table of the cutting table 2 for heat sealing. At this time, the saw teeth of the pre-cutting sheet 10 pierce the double-layer plastic belt and extend into the knife groove 201, thereby forming an easy-tear line on the belt surface. When the lifting cylinder 3 is extended and retracted two adjacent times, the distance the belt surface travels is the length of the cut plastic bag. The heat-sealed and cut plastic bag strip is cooled by the rotating spiral blade 12 below the rear shell chamber 402 and then driven by the traction motor 19 to be rolled into the recovery wheel 5 for collection.

[0026] The utility model can process the plastic strip pulled out from the raw material roll 17, so as to heat-seal and pre-cut the plastic bag strips in batches. During the operation, the device can accurately control the size of the plastic bag through the meter wheel component, and is provided with a cooling component to cool down after heat sealing, thereby avoiding the risk of the plastic bag strips sticking to each other when they are recycled into rolls.

[0027] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A safe quantitative cutting device for a bag making machine, comprising a base (1), characterized in that: The top surface of the pedestal (1) is provided with a cutting table (2), and the cutting table (2) cooperates with the sealing and cutting assembly lowered by the upper lifting cylinder (3) to seal and cut the double-layer plastic belt from the edge locking mechanism. The sealing and cutting assembly can be raised and collected into the front end of the shell (4). The bottom surface of the shell (4) is provided with a meter wheel assembly slidably connected to the upper plastic belt, and the meter wheel assembly is electrically connected to the controller of the lifting cylinder (3). The rear end of the shell (4) is built-in with a cooling assembly, and the plastic belt is rolled into the recovery wheel (5) of the material receiving assembly after sealing, cutting and cooling.

2. A safe quantitative cutting device for bag making machine according to claim 1, characterized in that: The sealing and cutting assembly comprises a base plate (6), the side surface of the base plate (6) is slidably connected to the inner wall of the front shell chamber (401) of the shell (4), the top surface of the base plate (6) is connected to the output end of the lifting cylinder (3), the cylinder body of the lifting cylinder (3) is installed on the top of the shell (4), the bottom surface of the base plate (6) is connected to the groove strip (7), the limiting plates (801) on both sides of the heat sealing strip (8) are inserted into the groove of the bottom surface of the groove strip (7), and the electric heating strip (9) is sandwiched between the two limiting plates (801). The back of the groove strip (7) is fixed with a pre-cutting sheet (10) by bolts, and the electric heating strip (9) and the pre-cutting sheet (10) are respectively matched with the table surface of the cutting table (2) and the knife groove (201).

3. The safe quantitative cutting device for bag making machine according to claim 1, characterized in that: The cooling assembly comprises a cooling motor (11), which is mounted on the top of the shell (4), the output end of the cooling motor (11) penetrates into the rear shell chamber (402) of the shell (4) and is connected to the center of the spiral blade (12), a plurality of air inlet holes (403) are opened on the top surface of the rear shell chamber (402), and a filter screen (13) is provided at the air outlet at the bottom of the rear shell chamber (402).

4. The safe quantitative cutting device for bag making machine according to claim 1, characterized in that: The edge locking mechanism comprises a roller group (14), the shafts of the upper and lower roller groups (14) are respectively rotatably connected to the side walls of the upper and lower cylinder shells (101) of the pedestal (1), a driving motor (15) is arranged outside the two cylinder shells (101), the output end of the driving motor (15) is connected to the shaft of the roller group (14), and the two end surfaces of each roller in the roller group (14) are provided with electric heating plates (1401), the electric heating plates (1401) of the upper and lower corresponding rollers are attached to the two sides of the double-layer plastic belt, and the upper and lower layers of the double-layer plastic belt are pulled out by two groups of raw material rolls (17) vertically rotatably connected to the raw material rack (16).

5. The safe quantitative cutting device for bag making machine according to claim 1, characterized in that: The material collection assembly comprises a recovery frame (18), a rotating shaft of the recovery frame (18) is connected in series with a plurality of recovery wheels (5), one end of the rotating shaft is connected to the output end of a traction motor (19), and the traction motor (19) is installed on the recovery frame (18).

6. The safe quantitative cutting device for bag making machine according to claim 1, characterized in that: The meter wheel assembly comprises a pulley block (20), the pulley block (20) is mounted on the bottom surface of the housing (4), each pulley in the pulley block (20) is in contact with the upper plastic belt, a color mark is provided on the side surface of one of the pulleys in the pulley block (20), and the color mark matches the position of the sensor (21).

7. The safe quantitative cutting device for bag making machine according to claim 1, characterized in that: The bottom surface of the cutting table (2) is vertically rotatably connected to the upper end of the threaded rod (202); the body of the threaded rod (202) is threadedly connected to the table top of the cutting table (2); the lower end of the threaded rod (202) passes through the table top and is connected to the turntable (203); the bottom surface of the cutting table (2) is vertically connected to a plurality of sliding rods (204); and the sliding rods (204) are slidably connected to the sliding grooves on the table top of the cutting table (2).

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