CN211763340U

CN211763340U - Film blowing system for plastic bags

Info

Publication number: CN211763340U
Application number: CN202020117036.9U
Authority: CN
Inventors: 郑浩松; 李海平; 郑永斌
Original assignee: Jiali Plastic Bag Products Shenzhen Co ltd
Current assignee: Jiali Plastic Bag Products Shenzhen Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-10-27
Anticipated expiration: 2030-01-17

Abstract

The utility model relates to a plastic bag film blowing system, a film blowing machine body, which comprises an extruder for heating and propelling plastic particle raw materials; the extruder is provided with a discharging hopper, and the bottom of the discharging hopper is conical and is communicated with the top of the extruder; a vertically arranged stirring shaft is arranged in the blanking hopper, a stirring frame is fixed on the stirring shaft, and an installation plate is fixed at the top of the blanking hopper and is arranged at the upper side of an opening at the top of the blanking hopper; the upper end of the stirring shaft penetrates out of the upper surface of the mounting plate and is rotationally connected with the mounting plate, and the mounting plate is provided with a driving part for driving the stirring shaft to rotate; the feeding hopper is sleeved with a heating sleeve, the heating sleeve is fixed with the outer side wall of the feeding hopper, and an electric heating wire is embedded in the heating sleeve. The utility model discloses have the effect of stoving plastic granules raw materials for the plastic granules raw materials before getting into the extruder are dry, prevent that plastic granules raw materials surface from adhering to moisture and influencing the quality of making the plastic bag.

Description

Film blowing system for plastic bags

Technical Field

The utility model belongs to the technical field of the technique of plastic bag production and specifically relates to a plastic bag membrane blowing system is related to.

Background

The film blowing machine heats and melts plastic particles and then blows the plastic particles into films, and the film blowing machine is divided into a plurality of types according to raw materials, such as PE, POF, PVC and the like. As shown in fig. 1, the film blowing machine mainly comprises an extruder, a machine head, a die head, a cooling device, a foam stabilizing frame, a lambdoidal plate, a traction roller, a coiling device and the like, and the working principle of the film blowing machine is as follows: adding plastic particles into a feeding hopper, feeding the raw materials into an extruder to be heated and pushed, filtering the molten plastic by a machine head to remove impurities, discharging the molten plastic from a die head die orifice, cooling and blowing by an air ring, coiling by a herringbone plate and a traction roller, and finally coiling the finished film into a tube.

At present, the lower hopper on current inflation film manufacturing machine is only simple hopper-shaped structure, is difficult to guarantee to get into the plastic granules raw materials drying in the extruder, if adhere to on the plastic granules raw materials moisture, under the heating effect in the extruder, this partial moisture can evaporate and be vapor for the inside vacuole formation of fused plastics, and then cause the film surface formation hole of extruding by the die head, make the bag surface damage of making, influence the quality of plastic bag.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, one of the purposes of the utility model is to provide a plastic bag membrane blowing system, it has the effect of stoving plastic granules raw materials for the plastic granules raw materials before getting into the extruder are dry, prevent that plastic granules raw materials surface from adhering to moisture and the influence makes the quality of plastic bag.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a film blowing machine for plastic bags comprises a film blowing machine body, wherein the film blowing machine body comprises an extruder for heating and propelling plastic particle raw materials; a discharging hopper is arranged on the extruder, and the bottom of the discharging hopper is conical and is communicated with the top of the extruder; a vertically arranged stirring shaft is arranged in the blanking hopper, a stirring frame is fixed on the stirring shaft, an installation plate is fixed at the top of the blanking hopper, and the installation plate is arranged on the upper side of an opening at the top of the blanking hopper; the upper end of the stirring shaft penetrates through the upper surface of the mounting plate and is rotatably connected with the mounting plate, and the mounting plate is provided with a driving part for driving the stirring shaft to rotate; the feeding hopper is sleeved with a heating sleeve, the heating sleeve is fixed with the outer side wall of the feeding hopper, and an electric heating wire is buried in the heating sleeve.

By adopting the technical scheme, when plastic particle raw materials enter the blanking hopper, the heating wire is electrified and heated, so that the temperature on the heating sleeve is raised, the plastic particle raw materials in the blanking hopper are heated, the moisture on the surfaces of the plastic particles is evaporated into steam and is discharged through a gap between the mounting plate and the top opening of the blanking hopper, the plastic particle raw materials entering the extruder are dried, and the quality of the manufactured plastic bags is prevented from being influenced by the moisture attached to the surfaces of the plastic particle raw materials; in addition, at this in-process, drive division drive (mixing) shaft rotates, has driven the stirring frame and has rotated, has stirred the plastic granules raw materials in the hopper down, has strengthened the mobility of plastic granules raw materials for plastic granules raw materials is heated everywhere more evenly, improves the drying efficiency of raw materials in the hopper down.

The present invention may be further configured in a preferred embodiment as: the drive division is including being fixed in mounting bracket on the mounting panel, being fixed in rotate motor on the mounting bracket, be fixed in rotate the epaxial driving gear of motor output and be fixed in the driven gear of (mixing) shaft upper end, the driving gear with driven gear meshes.

Through adopting above-mentioned technical scheme, when rotating the motor and starting, rotate the motor output shaft and rotate, driven gear has been driven and has rotated for driving gear and (mixing) shaft rotate, have stirred the plastic granules raw materials in the hopper down, simple structure, performance stable.

The present invention may be further configured in a preferred embodiment as: the hopper top cover is equipped with the fixed crown plate fixed with hopper lateral wall down, be equipped with the connecting rod of vertical setting on the fixed crown plate, the connecting rod upper end with the mounting panel bottom surface is fixed, the connecting rod lower extreme be fixed with the connecting plate that the laminating of fixed crown plate upper surface set up, be equipped with fastening bolt on the connecting plate, the fastening bolt tip is vertical to be passed the connecting plate with the fixed crown plate, just fastening bolt with fixed crown plate screw-thread fit.

Through adopting above-mentioned technical scheme, when fastening bolt screwed, the connecting plate compressed tightly with the fixed ring board for the mounting panel is fixed in down the hopper top and can dismantle with down the hopper and be connected, and convenient to use person demolishs the mounting panel in order to dredge down the hopper.

The present invention may be further configured in a preferred embodiment as: the fastening bolt is a butterfly bolt.

Through adopting above-mentioned technical scheme, fastening bolt is butterfly bolt, and the person of facilitating the use rotates, has also made things convenient for the user dismouting mounting panel.

The present invention may be further configured in a preferred embodiment as: an air exhaust fan is fixed outside the discharging hopper, an air exhaust pipe is arranged on the air exhaust fan, and the air exhaust pipe is communicated with the air exhaust fan and the bottom surface of the mounting plate respectively.

Through adopting above-mentioned technical scheme, when hopper under the heating jacket heating, the air exhaust fan starts for the mounting panel downside forms the negative pressure, has taken out the vapor that evaporates in the hopper down, prevents that the vapor condensation from flowing back to hopper down in, has strengthened the drying effect to the plastic granules raw materials.

The present invention may be further configured in a preferred embodiment as: the utility model discloses a heating device, including exhaust column, exhaust fan, manifold block, aspiration channel, mounting panel, exhaust column, exhaust fan, exhaust pipe, exhaust fan, manifold block, exhaust pipe upper surface fixed with the manifold block is connected with many aspiration channels, aspiration channel one end with manifold block inside intercommunication, the aspiration channel other end with mounting panel upper surface fixed and with mounting panel bottom surface intercommunication, and many the intercommunication department of aspiration channel and mounting panel encircles the axis evenly distributed of (mixing) shaft.

Through adopting above-mentioned technical scheme, the exhaust column forms the negative pressure in mounting panel bottom surface each department through many aspiration channels, is favorable to evenly extracting vapor, improves drying efficiency.

The present invention may be further configured in a preferred embodiment as: the lower end of the stirring shaft is provided with a helical blade, and the helical blade is arranged around the axis of the stirring shaft and fixed with the side wall of the stirring shaft.

Through adopting above-mentioned technical scheme, when the (mixing) shaft rotated, helical blade rotated, had the pushing action to the plastics raw materials of hopper bottom down, was favorable to preventing that plastics raw materials from stopping up at the bottom opening of hopper down.

The present invention may be further configured in a preferred embodiment as: and a chromium coating is arranged on the inner wall of the discharging hopper.

By adopting the technical scheme, the chromium coating is arranged on the inner wall of the discharging hopper, so that the abrasion of the inner wall of the discharging hopper is reduced.

To sum up, the utility model discloses a following at least one useful technological effect:

when plastic particle raw materials enter the discharging hopper, the heating wire is electrified and heated, so that the temperature on the heating sleeve is raised, the plastic particle raw materials in the discharging hopper are heated, the moisture on the surfaces of the plastic particles is evaporated into steam and is discharged through a gap between the mounting plate and the opening at the top of the discharging hopper, the plastic particle raw materials entering the extruder are dried, and the quality of the manufactured plastic bags is prevented from being influenced by the moisture attached to the surfaces of the plastic particle raw materials;

when the fastening bolt is screwed, the connecting plate is tightly pressed with the fixed ring plate, so that the mounting plate is fixed at the top of the discharging hopper and detachably connected with the discharging hopper, and a user can conveniently remove the mounting plate to dredge the discharging hopper;

when the hopper under the heating jacket heating, the air exhaust fan starts for the mounting panel downside forms the negative pressure, takes out the vapor that evaporates in the hopper down, prevents in vapor condensation backward flow to hopper down, has strengthened the drying effect to the plastic granules raw materials.

Drawings

Fig. 1 is a schematic structural diagram of the embodiment.

Fig. 2 is a schematic structural view of the discharging hopper.

Fig. 3 is an enlarged schematic view at a in fig. 2.

Reference numerals: 01. an extruder; 02. a machine head; 03. a die head; 04. a cooling device; 05. a herringbone plate; 06. a traction roller; 1. feeding a hopper; 2. heating a jacket; 21. an electric heating wire; 3. mounting a plate; 4. a stationary ring plate; 41. a connecting rod; 42. a connecting plate; 43. fastening a bolt; 5. a feed trough body; 6. a stirring shaft; 61. a stirring frame; 62. a helical blade; 7. a drive section; 71. a mounting frame; 72. rotating the motor; 73. a driving gear; 74. a driven gear; 8. an air extraction part; 81. a fixing plate; 82. an air exhaust fan; 83. an exhaust pipe; 84. a manifold block; 85. an air suction pipe.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a plastic bag film blowing system, including the inflation film manufacturing machine body, the inflation film manufacturing machine body is current inflation film manufacturing machine, including devices such as extruder 01, aircraft nose 02, die head 03, cooling device 04, lambdoidal plate 05, carry over pinch rolls 06, the setting of the 01 level of extruder for heating and propulsion plastic granules raw materials make fused plastic raw materials extrude by die head 03. The extruder 01 is provided with a blanking hopper 1, the blanking hopper 1 is in a barrel shape, the bottom of the blanking hopper is in a conical shape, the axis of the blanking hopper 1 is vertical, and the diameter of an opening at the upper end of the blanking hopper 1 is larger than that of the opening at the bottom of the blanking hopper. The bottom opening of the lower hopper 1 is fixed and communicated with the feed inlet of the extruder 01, and the inner side wall of the lower hopper 1 is subjected to chromium plating treatment to form a chromium plating layer.

Referring to fig. 2, the feeding hopper 1 is provided with a heating jacket 2, a mounting plate 3, a fixed ring plate 4, a feeding tank body 5, a stirring shaft 6, a driving part 7 and an air extraction part 8. Heating jacket 2 is the pipe column structure, is made by the pottery, 2 covers of heating jacket are located down hopper 1 on and fixed with the lateral wall at hopper 1 middle part down, buried heating wire 21 underground in the pipe wall of heating jacket 2, heating wire 21 is the heliciform, and the axis of heating wire 21 and the axis coincidence of heating jacket 2, in addition, 2 lateral walls of heating jacket are worn out at heating wire 21 both ends, when the circular telegram in heating wire 21 both ends, heating jacket 2 is heated for the plastic granules raw materials in the hopper 1 is heated down. The mounting plate 3 is circular plate-shaped, the axis of the mounting plate coincides with the axis of the blanking hopper 1, the mounting plate 3 is arranged on the upper side of the blanking hopper 1, and the diameter of the mounting plate 3 is larger than the inner diameter of the top opening of the blanking hopper 1. Referring to fig. 3, the fixed ring plate 4 is a circular plate-shaped structure, which is sleeved on the top of the discharging hopper 1 and fixed to the outer sidewall of the discharging hopper 1, and the fixed ring plate 4 is provided with a connecting rod 41, a connecting plate 42 and a fastening bolt 43. Connecting rod 41 is that the cross-section is circular shape rod-like structure, and connecting rod 41 is vertical to be set up, and connecting rod 41 upper end and mounting panel 3 bottom surface are fixed, and connecting rod 41 lower extreme sets up in the upside of retaining ring board 4. The connecting plate 42 is a rectangular plate and is horizontally disposed, the bottom surface of the connecting plate 42 is attached to the upper surface of the fixing plate 81, and the upper surface of the connecting plate 42 is fixed to the lower end of the connecting rod 41. The fastening bolts 43 are butterfly bolts, the end parts of the fastening bolts 43 vertically penetrate through the connecting plate 42 and penetrate through the bottom surface of the fixed tube plate, and the fastening bolts 43 are in threaded fit with the fixed ring plate 4. Two groups of connecting rods 41, connecting plates 42 and fastening bolts 43 are arranged, and the two groups of connecting rods 41, connecting plates 42 and fastening bolts 43 are symmetrically arranged relative to one vertical bisecting plane of the mounting plate 3. When the fastening bolt 43 is screwed, the connecting plate 42 is pressed against the fixed ring plate 4, so that the mounting plate 3 is fixed on the upper side of the top opening of the discharging hopper 1, and the mounting plate 3 is detachably connected with the discharging hopper 1. The feeding trough body 5 is a trough body structure with a U-shaped cross section, the feeding trough body is obliquely arranged, the lower end opening edge of the feeding trough body 5 is attached to the top opening edge of the lower hopper 1 and fixed with the top opening edge, and in addition, the feeding trough body 5 is arranged between two connecting rods 41 and used for facilitating a user to dump plastic particle raw materials into the lower hopper 1.

Referring to fig. 2, the stirring shaft 6 is a rod-shaped structure with a circular cross section and is vertically arranged in the lower hopper 1, the axis of the stirring shaft 6 coincides with the axis of the lower hopper 1, the upper end of the stirring shaft 6 penetrates through the bottom surface of the mounting plate 3 and penetrates out of the upper surface of the mounting plate 3, and the stirring shaft 6 is rotatably connected with the mounting plate 3. The stirring shaft 6 is provided with a stirring frame 61 and a helical blade 62, the stirring frame 61 is U-shaped, the cross section of the stirring frame is circular, and the two ends of the stirring frame 61 are fixed with the side wall of the stirring shaft 6. The number of the stirring frames 61 is two, and the two stirring frames 61 are symmetrically arranged about one vertical bisecting plane of the stirring shaft 6. The helical blade 62 is a sheet, is arranged at the lower end of the stirring shaft 6 and extends around the side wall of the stirring shaft 6, and the helical blade 62 is fixed with the side wall of the stirring shaft 6. The driving portion 7 includes an installation frame 71, a rotating motor 72, a driving gear 73 and a driven gear 74, the installation frame 71 is in an inverted U-shaped plate shape, two ends of the installation frame 71 are downward arranged and fixed with the upper surface of the installation plate 3, the rotating motor 72 is a servo motor and fixed on the upper surface of the installation frame 71, and an output shaft of the rotating motor 72 penetrates through the upper surface of the installation frame 71 and penetrates into the installation frame 71. The axis of driving gear 73 coincides with the axis of rotating motor 72 output shaft, driving gear 73 is fixed with the output shaft that rotates motor 72, driven gear 74 cover is located (mixing) shaft 6 upper end and is fixed with (mixing) shaft 6, and driven gear 74 sets up with the driving gear 73 meshing, when rotating motor 72 and starting, driven gear 74 rotates with driving gear 73, driven (mixing) shaft 6 rotates, stirring frame 61 and helical blade 62 have been driven and have been rotated, the plastic granules raw materials in hopper 1 down has been stirred, and have propulsive effect down to hopper 1 bottom open-ended plastic granules raw materials down, prevent to block up.

Referring to fig. 2, the suction portion 8 includes a fixing plate 81, a suction fan 82, a suction duct 83, a manifold block 84, and a suction duct 85. The fixing plate 81 is a rectangular plate horizontally disposed on one side of the hopper 1, and one edge of the fixing plate 81 is attached to and fixed with the outer sidewall of the hopper 1. The suction fan 82 is a conventional waterproof type suction fan, and the suction fan 82 is fixed to the upper surface of the fixing plate 81. The exhaust pipe 83 is in a shape of a circular pipe and is made of a stainless steel pipe through cutting, one end of the exhaust pipe 83 is fixed and communicated with an air inlet of the air exhaust fan 82, and the other end of the exhaust pipe extends towards the mounting plate 3. The manifold block 84 is a rectangular block, the interior of the block is hollow, and the outer side wall of one side of the manifold block 84 is fixed and communicated with one end of the exhaust pipe 83 far away from the exhaust fan 82. The air suction pipe 85 is in a circular pipe shape, the inner diameter of the air suction pipe is smaller than that of the air suction pipe 83, one end of the air suction pipe 85 is fixed to the upper surface of the mounting plate 3 and communicated with the bottom surface of the mounting plate 3, and the other end of the air suction pipe 85 is fixed to the upper surface of the manifold block 84 and communicated with the inside of the manifold block 84. Four air suction pipes 85 are arranged, the communication positions of the four air suction pipes 85 and the mounting plate 3 are uniformly distributed around the axis of the mounting plate 3, and the communication positions of the four air suction pipes 85 and the manifold block 84 are uniformly arranged along the length direction of the manifold block 84. When hopper 1 under the heating jacket 2 heating, air exhaust fan 82 starts for the mounting panel 3 downside forms the negative pressure, has taken out the vapor that evaporates in the hopper 1 down, prevents that the vapor condensation from flowing back to hopper 1 down in, has strengthened the drying effect to the plastic granules raw materials.

The implementation principle of the embodiment is as follows: when the plastic granules raw materials get into down in the hopper 1, heating wire 21 ohmic heating, make the temperature on the heating jacket 2 rise, the plastic granules raw materials in hopper 1 have been heated down, make the surperficial moisture evaporation of plastic granules steam and discharge through the clearance between mounting panel 3 and the hopper 1 open-top down, thereby make the plastic granules raw materials that gets into in the extruder 01 dry, prevent that plastic granules raw materials surface from adhering to moisture and influencing the quality of making the rubber bag, furthermore, at above-mentioned in-process, rotate motor 72 and start, stirring shaft 6 has been driven and has been rotated, stirring frame 61 has been driven and has rotated, the plastic granules raw materials in hopper 1 have been stirred down, the mobility of plastic granules raw materials has been strengthened, make the plastic granules raw materials everywhere be heated more evenly, improve the drying efficiency of raw materials in hopper 1 down.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a plastic bag blown film system, inflation film manufacturing machine body, the inflation film manufacturing machine body is including being used for heating and propelling extruder (01) of plastic pellet raw materials, its characterized in that: a discharging hopper (1) is arranged on the extruder (01), and the bottom of the discharging hopper (1) is conical and is communicated with the top of the extruder (01); a vertically arranged stirring shaft (6) is arranged in the blanking hopper (1), a stirring frame (61) is fixed on the stirring shaft (6), a mounting plate (3) is fixed on the top of the blanking hopper (1), and the mounting plate (3) is arranged on the upper side of an opening in the top of the blanking hopper (1); the upper end of the stirring shaft (6) penetrates through the upper surface of the mounting plate (3) and is rotatably connected with the mounting plate (3), and a driving part (7) for driving the stirring shaft (6) to rotate is arranged on the mounting plate (3); the cover is equipped with heating jacket (2) on lower hopper (1), heating jacket (2) with lower hopper (1) lateral wall is fixed, just heating wire (21) have been buried underground in heating jacket (2).

2. The bag blowing system of claim 1, wherein: the driving part (7) comprises a mounting frame (71) fixed on the mounting plate (3), a rotating motor (72) fixed on the mounting frame (71), a driving gear (73) fixed on an output shaft of the rotating motor (72) and a driven gear (74) fixed at the upper end of the stirring shaft (6), wherein the driving gear (73) is meshed with the driven gear (74).

3. The bag blowing system of claim 2, wherein: hopper (1) top cover is equipped with and fixes retaining ring board (4) of hopper (1) lateral wall down, be equipped with connecting rod (41) of vertical setting on retaining ring board (4), connecting rod (41) upper end with mounting panel (3) bottom surface is fixed, connecting rod (41) lower extreme be fixed with connecting plate (42) that retaining ring board (4) upper surface laminating set up, be equipped with fastening bolt (43) on connecting plate (42), fastening bolt (43) tip is vertical to be passed connecting plate (42) with retaining ring board (4), just fastening bolt (43) with retaining ring board (4) screw-thread fit.

4. A bag blowing system according to claim 3, characterized in that: the fastening bolt (43) is a butterfly bolt.

5. The bag blowing system of claim 1, wherein: an air exhaust fan (82) is fixed outside the discharging hopper (1), an air exhaust pipe (83) is arranged on the air exhaust fan (82), and the air exhaust pipe (83) is communicated with the air exhaust fan (82) and the bottom surface of the mounting plate (3) respectively.

6. The bag blowing system of claim 5, wherein: keep away from exhaust column (83) the one end of air exhaust fan (82) is fixed with inside hollow manifold piece (84), manifold piece (84) with exhaust column (83) intercommunication, just be connected with many aspiration channels (85) on manifold piece (84), aspiration channel (85) one end with manifold piece (84) inside intercommunication, aspiration channel (85) other end with mounting panel (3) upper surface fixed and with mounting panel (3) bottom surface intercommunication, and many aspiration channel (85) encircle with the intercommunication department of mounting panel (3) the axis evenly distributed of (mixing) shaft (6).

7. The bag blowing system of claim 1, wherein: the stirring shaft (6) lower extreme is equipped with helical blade (62), helical blade (62) encircle the axis setting of stirring shaft (6) and fixed with stirring shaft (6) lateral wall.

8. The bag blowing system of claim 1, wherein: and a chromium coating is arranged on the inner wall of the blanking hopper (1).