Film blowing and bag making all-in-one machine

Abstract

The utility model relates to a film blowing and bag making all-in-one machine capable of improving production efficiency and product consistency. The film blowing and bag making all-in-one machine comprises a machine base, a discharging hopper, an extrusion mechanism, a die head, an air ring, a man plate and a traction mechanism. The traction mechanism comprises a driving traction roller and a driven traction roller; the device is characterized in that a heat-sealing spot-breaking mechanism is arranged on one side of the discharging end of the traction mechanism, the heat-sealing spot-breaking mechanism comprises a heat-sealing roller, a heat-sealing rubber roller and a heat-sealing power source for driving the heat-sealing roller and the heat-sealing rubber roller to rotate relatively, a heat-sealing head and a spot-breaking cutter are arranged on the outer circle face of the heat-sealing roller, and the heat-sealing head and the spot-breaking cutter are close to each other and are arranged in parallel. According to the film blowing and bag making all-in-one machine, continuous operation of film blowing forming and spot breaking bag making procedures can be achieved, and therefore the equipment investment cost is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a blow film and bag making all-in-one machine. BACKGROUND

[0002] In the field of soft packaging, the point breaking plastic bag (referred to as point breaking bag) is widely used in the independent packaging of food, daily chemical products and medical supplies due to its convenient separation and use. The traditional industrial production process of point breaking bag usually needs to be completed in two independent processes: first, the thermoplastic resin material such as polyethylene (PE) and polypropylene (PP) is extruded and blow molded into a cylindrical film by a film blowing machine, and after stretching and sizing by a traction roller group, the film roll is wound and stored by a winding device; then the wound film roll is transferred to a special bag making machine, the bag body is sealed by a heat sealing knife, and a point breaking structure (including but not limited to V-shaped notch, intermittent indentation and other weakening treatments) is processed at a predetermined position. The existing technology has the following significant defects: 1. Cost problem caused by equipment separation: the production enterprise needs to configure two independent sets of equipment, blow film machine and bag making machine, which has high purchase cost and occupies a large factory area, which forms a significant financial pressure on small and medium-sized packaging enterprises; 2. Low material turnover efficiency: the film roll needs to go through many intermediate links such as unloading, transportation and re-feeding after the blow film process is completed, which not only increases labor cost, but also easily causes scratches or contamination on the surface of the film due to frequent contact; 3. Energy consumption: during the two independent start-up processes, the preheating and parameter adjustment of the equipment cause double waste of electric energy and raw materials; 4. Process connection error: the process parameters such as tension control and temperature parameters between different equipment are difficult to completely match, which easily causes deviation of point breaking position precision and affects the qualified rate of finished products. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model innovatively provides a blow film and bag making all-in-one machine which improves production efficiency and product consistency.

[0004] The blow film and bag making all-in-one machine comprises a machine base, a feeding hopper, an extrusion mechanism, a die head, an air ring, a human child plate and a traction mechanism; the traction mechanism comprises a driving traction roller and a driven traction roller; characterized in that: one side of the discharge end of the traction mechanism is provided with a heat sealing and point breaking mechanism, the heat sealing and point breaking mechanism comprises a heat sealing roller, a heat sealing rubber roller and a heat sealing power source for driving the heat sealing roller and the heat sealing rubber roller to rotate relative to each other, the outer circular surface of the heat sealing roller is provided with a heat sealing head and a point breaking knife, and the heat sealing head and the point breaking knife are arranged close to and parallel to each other.

[0005] The heat sealing roller is provided with cooling through holes, the cooling through holes have water inlets and water outlets, and a cooling water circulation system is arranged between the water inlets and the water outlets.

[0006] The cooling through holes are circumferentially distributed and meanderingly arranged in the heat sealing roller.

[0007] The cooling water circulation system includes a water pump, a water tank, and a water cooler. The water pump is connected to the inlet of the cooling through hole through a first water pipe, the water pump is connected to the water tank through a second water pipe, the water tank is connected to the water cooler through a third water pipe, and the water cooler is connected to the outlet of the cooling through hole through a fourth water pipe.

[0008] Both the heat-sealing roller and the heat-sealing rubber roller are mounted on the mounting base. The heat-sealing rubber roller is rotatably mounted on the sliding base. The mounting base is provided with a horizontal sliding groove. The sliding base is slidably disposed in the horizontal sliding groove. An adjusting bolt is threadedly connected to the mounting base. A spring is sleeved on the adjusting bolt. The spring acts on the sliding base and brings the heat-sealing rubber roller and the heat-sealing roller closer together.

[0009] The heat-sealing break mechanism has a winding mechanism on one side of the discharge end. The winding mechanism includes a winding mounting base, an active winding roller, a passive winding roller, and a winding motor. The active winding roller and the passive winding roller are close to each other, and the active winding roller is connected to the winding motor for transmission.

[0010] The take-up mounting base is equipped with an upwardly extending support rod, which is used to place the take-up shaft, which is close to the active take-up roller.

[0011] A heat-sealing film-cutting mechanism is provided between the traction mechanism and the heat-sealing point-breaking mechanism. The heat-sealing film-cutting mechanism includes a film-cutting blade, which can be electrically heated.

[0012] The active traction roller is provided with a cooling channel, which is distributed circumferentially and arranged in a meandering manner inside the active traction roller. The cooling channel has a water inlet and a water outlet, and a cooling water circulation system is provided between the water inlet and the water outlet.

[0013] Both the heat sealing head and the point-breaking knife can be electrically heated.

[0014] The blown film and bag making integrated machine provided by this utility model can realize continuous operation of blown film forming and point-cut bag making processes, thereby effectively reducing equipment investment costs. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention;

[0016] Figure 2 This is a schematic diagram of the heat-sealing point breaking mechanism;

[0017] Figure 3 This is a cross-sectional view of the heat-sealing roller and the heat-sealing rubber roller;

[0018] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0019] Figure 5 A schematic diagram of a cooling water circulation system connected to a heat-sealing roller;

[0020] Figure 6 This is a cross-sectional view of the active traction roller and the passive traction roller.

[0021] Figure 7 This is a schematic diagram of the winding mechanism;

[0022] Figure 8 This is a schematic diagram of a point-tear bag. Detailed Implementation

[0023] like Figure 1 As shown, this blown film bag making machine includes a base 1, a feeding hopper 2, an extrusion mechanism 3, a die head 4, an air ring 11, a mandrel plate 5, a traction mechanism 6, and a winding mechanism 7.

[0024] Dry polyethylene particles (or other plastic raw materials) are added to the feed hopper 2 of the blown film machine. The plastic particles enter the extrusion mechanism 3 from the feed hopper 2 by their own weight. The extrusion mechanism 3 pushes the plastic particles forward. During the pushing process, due to the friction between the plastic and the screw, the plastic and the barrel, and the collision and friction between the particles, coupled with the heating outside the barrel, the plastic particles gradually melt. The molten plastic is extruded from the die 4 to form a tubular film preform. The air compressor compresses the air and delivers it to the blown film die. High-pressure air is blown out through the die 4 to inflate the tubular film preform into a film of the required width. The inflated film is cooled by the air ring 11. After being cooled and shrunken by the herringbone plate 5, the film is pulled by the traction mechanism 6 and finally wound into a tube 12 by the winding mechanism 7, completing the film production.

[0025] In order to form a tubular film into a point-tear bag D, and then wind it up by the winding mechanism 7, as follows: Figure 1 As shown, a heat-sealing break mechanism 8 is provided on one side of the discharge end of the traction mechanism 6 (the heat-sealing break mechanism 8 is located on the film feeding path between the traction mechanism 6 and the winding mechanism 7), as... Figure 2 As shown, the heat-sealing breakage mechanism 8 includes a heat-sealing roller 80, a heat-sealing rubber roller 81, and a heat-sealing power source that drives the heat-sealing roller 80 and the heat-sealing rubber roller 81 to rotate relative to each other. A heat-sealing head 801 and a breakage knife 800 are provided on the outer circumference of the heat-sealing roller 80, and the heat-sealing head 801 and the breakage knife 800 are arranged close to each other and parallel to each other. During operation, the heat-sealing power source drives the heat-sealing roller 80 and the heat-sealing rubber roller 81 to rotate relative to each other. The tubular film from the traction mechanism 6 enters between the heat-sealing roller 80 and the heat-sealing rubber roller 81. As the heat-sealing roller 80 and the heat-sealing rubber roller 81 roll, the heat-sealing head 801 on the heat-sealing roller 80 heat-presses the film onto the rubber surface of the heat-sealing rubber roller 81, such as... Figure 8As shown, this forms the bottom heat-sealed edge D1 of the perforated bag D, while the perforated knife 800 on the heat-sealing roller 80 presses the film onto the rubber surface of the heat-sealing roller 81, as shown. Figure 8 As shown, this forms the point break line D2 of the point break bag D. Since it is only a point break, not a complete break, the film remains continuous (when using it, a bag is torn along the point break line, and an opening is formed at the point break line). Finally, the winding mechanism 7 winds up the material into a roll. This blown film bag making integrated machine can realize the continuous operation of blown film forming and point break bag making processes, thereby effectively reducing equipment investment costs while improving production efficiency and product consistency.

[0026] When the heat sealing head 801 and the point-cutting knife 800 are working, they need to be heated by electricity. Due to heat conduction, the heat sealing roller 80 will heat up, causing the film to soften. To solve this problem, such as... Figure 3 and Figure 4 As shown, the heat-sealing roller 80 is provided with cooling through holes 802, such as... Figure 5 As shown, the cooling through-hole 802 has an inlet 803 and an outlet 804, and a cooling water circulation system is provided between the inlet 803 and the outlet 804. The cooling water circulation system allows cooling water to enter from the inlet 803 of the cooling through-hole 802 and exit from the outlet 804. Through this cooling water circulation, the temperature of the heat-sealing roller 80 can be effectively reduced. This not only avoids affecting the film but also cools the film, resulting in better film forming.

[0027] To further improve the cooling effect, such as Figure 3 and Figure 4 As shown, cooling through holes 802 are distributed circumferentially and arranged in a meandering manner within the heat-sealing roller 80. This structure can significantly reduce the temperature of the circumferential surface of the heat-sealing roller 80, improve the cooling effect of the heat-sealing roller 80, and thus enhance the film forming effect.

[0028] like Figure 5 As shown, this cooling water circulation system includes a water pump 88, a water tank 87, and a water cooler 86. The water pump 88 is connected to the inlet 803 of the cooling through-hole 802 via a first water pipe 880, and to the water tank 87 via a second water pipe 870. The water tank 87 is connected to the water cooler 86 via a third water pipe 871, and the water cooler 86 is connected to the outlet 804 of the cooling through-hole 802 via a fourth water pipe 860. The water pump 88 pumps water from the water tank 87 into the inlet 803 through the first water pipe 880. After the cold water enters the cooling through-hole 802 in the heat-sealing roller 80, it exits from the outlet 804 of the cooling through-hole 802 and then flows into the water cooler 86 through the fourth water pipe 860. The water cooler 86 cools the water and then returns it to the water tank 87 through the third water pipe 871, thus realizing the cooling water circulation.

[0029] In order to press the heat-sealing roller 80 and the heat-sealing adhesive roller 81 together, such as Figure 2 As shown, both the heat-sealing roller 80 and the heat-sealing adhesive roller 81 are mounted on the mounting base 83. The heat-sealing adhesive roller 81 is rotatably mounted on the sliding seat 82. The mounting base 83 is provided with a horizontal groove 830, and the sliding seat 82 is slidably disposed within the horizontal groove 830. An adjusting bolt 84 is threadedly connected to the mounting base 83, and a spring 85 is sleeved on the adjusting bolt 84. The spring 85 acts on the sliding seat 82, bringing the heat-sealing adhesive roller 81 closer to the heat-sealing roller 80. Through the action of the spring 85, the sliding seat 82 carries the heat-sealing adhesive roller 81 towards the heat-sealing roller 80, thus pressing the heat-sealing roller 80 and the heat-sealing adhesive roller 81 together. When it is necessary to adjust the pressure between the heat-sealing roller 80 and the heat-sealing adhesive roller 81 to meet the pressure requirements of films of different thicknesses, it is only necessary to rotate the adjusting bolt 84, making adjustment very convenient.

[0030] As described above, a winding mechanism 7 is provided on the discharge end side of the heat-sealing break mechanism 8, such as... Figure 7 As shown, the winding mechanism 7 includes a winding mounting base 70, an active winding roller 72, a passive winding roller 71, and a winding motor. The active winding roller 72 and the passive winding roller 71 are close to each other, and the active winding roller 72 is connected to the winding motor for transmission. Driven by the winding motor, the active winding roller 72 and the passive winding roller 71 rotate relative to each other, pulling the film forward for winding.

[0031] To facilitate the winding and unwinding of the reel 73, such as Figure 7 As shown, an upwardly extending support rod 74 is mounted on the take-up mounting base 70. The support rod 74 is used to place the take-up shaft 73, which is positioned against the drive take-up roller 72. Because the support rod 74 is angled, the take-up shaft 73, when placed on the support rod 74, automatically moves towards the drive take-up roller 72 due to gravity. The rotation of the drive take-up roller 72 drives the take-up shaft 73 to rotate, thus enabling the take-up shaft 73 to take up its winding length.

[0032] Some films are wider, and some customers need to cut the film in half. Therefore, a heat-sealing film cutting mechanism 9 is provided between the traction mechanism 6 and the heat-sealing break mechanism 8. Figure 1 As shown, the heat-sealing film cutting mechanism 9 includes a film cutter 91 (the film cutter 91 is electrically heated). When the film is pulled down by the winding mechanism 7, the film cutter 91 cuts the film in two and heat-seals the cut edge of the film. The film cut in two then enters the heat-sealing and point-breaking mechanism 8 for heat sealing and point breaking, and finally enters the winding mechanism 7 for winding.

[0033] Finally, it is worth mentioning that when the active traction roller 60 and the passive traction roller 61 rotate relative to each other to perform the traction action, they will become hot due to friction. The heated active traction roller 60 and passive traction roller 61 will affect the cooling of the film. To solve this problem, such as...Figure 6 As shown, a cooling channel 601 is also provided on the active traction roller 60. The cooling channel 601 is distributed circumferentially and arranged in a meandering manner within the active traction roller 60. The cooling channel 601 has an inlet and an outlet, and a cooling water circulation system is provided between the inlet and the outlet. This cooling water circulation system can be the same system as the cooling water circulation system for cooling the heat-sealing roller 80 described above, or they can be two separate systems. By cooling the active traction roller 60 through the cooling water circulation system, the effect of the heat generated by friction between the active traction roller 60 and the passive traction roller 61 on the film can be eliminated, thereby improving the film forming effect.

Claims

1. A blown film bag making integrated machine, comprising a base (1), a feeding hopper (2), an extrusion mechanism (3), a die head (4), an air ring (11), a mandrel plate (5), and a traction mechanism (6); the traction mechanism (6) includes an active traction roller (60) and a passive traction roller (61); characterized in that: The discharge end of the traction mechanism (6) is provided with a heat sealing point breaking mechanism (8). The heat sealing point breaking mechanism (8) includes a heat sealing roller (80), a heat sealing rubber roller (81), and a heat sealing power source that drives the heat sealing roller (80) and the heat sealing rubber roller (81) to rotate relative to each other. The outer circular surface of the heat sealing roller (80) is provided with a heat sealing head (801) and a point breaking knife (800). The heat sealing head (801) and the point breaking knife (800) are close to each other and arranged in parallel.

2. The blown film bag making machine according to claim 1, characterized in that: The heat-sealing roller (80) is provided with a cooling through hole (802), the cooling through hole (802) has a water inlet (803) and a water outlet (804), and a cooling water circulation system is provided between the water inlet (803) and the water outlet (804).

3. The blown film bag making machine according to claim 2, characterized in that: The cooling through holes (802) are distributed circumferentially and arranged in a meandering manner within the heat-sealing roller (80).

4. The blown film bag making machine according to claim 2, characterized in that: The cooling water circulation system includes a water pump (88), a water tank (87), and a water cooler (86). The water pump (88) is connected to the inlet (803) of the cooling through hole (802) through a first water pipe (880). The water pump (88) is connected to the water tank (87) through a second water pipe (870). The water tank (87) is connected to the water cooler (86) through a third water pipe (871). The water cooler (86) is connected to the outlet (804) of the cooling through hole (802) through a fourth water pipe (860).

5. The blown film bag making machine according to claim 2, characterized in that: Both the heat-sealing roller (80) and the heat-sealing rubber roller (81) are mounted on the mounting base (83). The heat-sealing rubber roller (81) is rotatably mounted on the sliding base (82). The mounting base (83) is provided with a horizontal slide groove (830). The sliding base (82) is slidably disposed in the horizontal slide groove (830). An adjusting bolt (84) is threadedly connected to the mounting base (83). A spring (85) is sleeved on the adjusting bolt (84). The spring (85) acts on the sliding base (82) and brings the heat-sealing rubber roller (81) and the heat-sealing roller (80) closer together.

6. The blown film bag making machine according to claim 1, characterized in that: The heat-sealing break mechanism (8) has a winding mechanism (7) on one side of the discharge end. The winding mechanism (7) includes a winding mounting base (70), an active winding roller (72), a passive winding roller (71), and a winding motor. The active winding roller (72) is close to the passive winding roller (71), and the active winding roller (72) is connected to the winding motor for transmission.

7. The blown film bag making machine according to claim 6, characterized in that: The take-up mounting base (70) is equipped with an upwardly extending support rod (74), which is used to place the take-up shaft (73) and the take-up shaft (73) is close to the active take-up roller (72).

8. The blown film bag making machine according to claim 1, characterized in that: A heat-sealing film cutting mechanism (9) is provided between the traction mechanism (6) and the heat-sealing point breaking mechanism (8). The heat-sealing film cutting mechanism (9) includes a film cutting knife (91), which can be electrically heated.

9. The blown film bag making machine according to claim 1, characterized in that: The active traction roller (60) is provided with a cooling channel (601). The cooling channel (601) is distributed circumferentially and arranged in a meandering manner within the active traction roller (60). The cooling channel (601) has an inlet and an outlet, and a cooling water circulation system is provided between the inlet and the outlet.

10. The blown film bag making machine according to claim 1, characterized in that: Both the heat sealing head (801) and the point breaking knife (800) can be electrically heated.

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