CN211994417U - Feeding device of non-stretching bag making machine in upper driving mode - Google Patents

Abstract

A feeding device of a non-stretching bag making machine with an upper driving mode comprises a rack, wherein a feeding swing frame is hinged to the lower portion of the rear end of the rack, a swing frame driving device is arranged between the feeding swing frame and the upper portion of the rear end of the rack, and a discharging driving device is arranged on the rack near the feeding swing frame; a conveying roller is arranged above the front part of the rear end of the frame. The conveying roller is provided with only one conveying roller, and a raw material lower stretching mechanism is arranged in front of the conveying roller; the feeding driving device comprises a swing arm, a feeding driving roller and a swing arm driving device, wherein the bottom end of the swing arm is hinged to the rear end of the rack, and the feeding driving roller is installed at the top end of the swing arm; the conveying roller and the discharging driving roller are in transmission connection with the rotation driving device. The advantages are that: by eliminating a conveying roller, the wrinkles of the plastic film caused by clamping are avoided; the plastic film is continuously pressed by the raw material lower stretching mechanism, so that wrinkles caused by instant relaxation of the plastic film are effectively avoided. The structure is simplified, and the cost is reduced.

Description

Feeding device of non-stretching bag making machine in upper driving mode

Technical Field

The utility model relates to a non-stretching bag making machine feeding device with an upper driving mode, which is an important component of a plastic bag making machine.

Background

The raw material of the bag making machine for manufacturing the plastic bag is that a cylindrical film (or sheet) is wound on a tubular shaft, when in use, the wound raw material is lifted and placed on a feeding rack at the rear part of the bag making machine, and a discharging driving roller is arranged beside the raw material to drive the raw material to rotate; the plastic film drawn from the raw material roll is clamped by two tangentially arranged conveying rollers after passing through the guide roller and is conveyed to the subsequent processing stations (heat sealing cutting, folding, packaging and other stations). The plastic film is easy to wrinkle in the feeding and conveying process, and particularly after being clamped by two conveying rubber rollers, the plastic film is subjected to dead-fold, so that the manufactured product becomes waste.

Disclosure of Invention

The utility model provides a tensile system bag machine feedway of no of upper portion drive mode solves the above-mentioned problem that prior art exists.

The technical scheme of the utility model is that: a feeding device of a non-stretching bag making machine with an upper driving mode comprises a rack, wherein a feeding swing frame is hinged to the lower portion of the rear end of the rack, a swing frame driving device is arranged between the feeding swing frame and the upper portion of the rear end of the rack, and a discharging driving device is arranged on the rack near the feeding swing frame; the front part of the rear end of the frame is provided with a conveying roller, and the front part of the conveying roller is provided with a raw material lower stretching mechanism; the feeding driving device comprises a first swing arm, a feeding driving roller and a swing arm driving device, the bottom end of the first swing arm is hinged to the rear end of the rack, and the feeding driving roller is mounted at the top end of the first swing arm; a swing arm driving device capable of driving the first swing arm to swing up and down is arranged between the first swing arm and the rear end of the frame; the conveying roller and the discharging driving roller are in transmission connection with the rotation driving device.

The utility model has the advantages that:

1. by canceling a conveying roller, the plastic film cannot be clamped in the conveying process, so that wrinkles of the plastic film caused by clamping are avoided; the regular polygonal conveying roller is adopted, so that the friction force between the conveying roller and the plastic film is increased, and the plastic film is further prevented from being loosened to cause wrinkles.

2. An air curtain machine is arranged above the bamboo curtain, continuous pressure is applied to the plastic film by utilizing the wind power of downward blowing of the air curtain machine, the wind pressure is uniform and stable, and the air curtain machine and the bamboo curtain act together, so that the instant loose state of the plastic film is effectively avoided, and the wrinkles produced by the plastic film machine are prevented.

3. The opposite of conveying roller sets up the suction effect who increases the mechanism that rubs or utilize the suction hole of conveying roller to and the conveying roller of non-circular or brush structure, the homoenergetic increases the frictional force between plastic film and the conveying roller, thereby has increased the drive power of conveying roller to plastic film, in order to remedy to get rid of the not enough of drive power behind a conveying roller.

Drawings

Fig. 1 is a schematic view (with one side of a frame removed) of the overall structure of a first embodiment of the present invention (including only a bamboo curtain and a conveying roller);

fig. 2 is a schematic overall structure diagram of a second embodiment of the present invention (an air curtain is added to the first embodiment);

FIG. 3 is a schematic view of the external structure of the circular conveying roller of the present invention;

FIG. 4 is a left (right) view of FIG. 3;

FIG. 5 is a schematic view of the external structure of the conveying roller with the cavity and the air outlet hole of the present invention;

FIG. 6 is a left side view of FIG. 5;

FIG. 7 is a schematic view of the outer shape and structure of the linear and radial cross-section conveying roller of the present invention;

FIG. 8 is a left (right) view of FIG. 7;

fig. 9 is a schematic view of the shape and structure of the brush structure conveying roller according to the present invention;

FIG. 10 is a left (right) view of FIG. 9;

fig. 11 is a schematic view of the overall structure of a third embodiment of the present invention (a plectrum roller is added on the basis of the second embodiment);

FIG. 12 is a schematic view of the friction increasing mechanism of the present invention being a configuration of a pick roller;

FIG. 13 is a left (right) view of FIG. 12;

FIG. 14 is a schematic structural view of the friction-increasing mechanism of the present invention being a blow pipe (combined with a conveying roller);

fig. 15 is a schematic structural view of the friction increasing mechanism of the present invention being a pressing roller (combined with a conveying roller);

FIG. 16 is a right side view of FIGS. 1, 2 and 11 (only a right-hand member is shown);

fig. 17 is a schematic view of a transmission mechanism driven by a motor shared by the conveying roller and the discharging driving roller (the motor 28 is installed at the top end of the swing arm);

fig. 18 is a schematic view of another transmission mechanism driven by a motor and shared by the conveying roller and the discharging driving roller (the motor 28 is installed on the frame).

In the figure: 1. a frame (plate); 2. a guide roller; 3. a bamboo curtain; 4. an air curtain machine; 5. a conveying roller; 51. a concave ring; 52. a suction hole; 53. an air injection ring; 54. a gas injection nozzle; 55. an arc top; 56. a brush; 6. the spring belt supporting roll; 7. a braking device; 8. a heat seal device; 9. a guide roller; 10. a first motor; 11. a lower cross beam; 12. a cylinder; 13. a raw material roller; 14. raw materials (plastic films); 15. a discharging driving roller; 16. the spring belt supporting roll; 17. a plectrum roller; 171. a blade; 18. a spring band; 19. a feeding swing frame; 20. a guide roller 21, a photoelectric sensor; 22. an air blowing pipe; 221. an air outlet; 23. a compression roller; 24. a second swing arm; 25. a support shaft; 26. an upper cross beam; 27. a first swing arm; 28. a second motor; 29. a cylinder; 30. an intermediate transmission wheel; 31. a transmission belt; 32. a transmission belt; 33. a transmission belt.

Detailed Description

As shown in fig. 1 and 16, the first embodiment of the feeding device of the non-stretching bag making machine of the upper driving type of the present invention comprises a frame 1 (two side plates that can be arranged in parallel), a feeding swing frame 19 is hinged to the lower portion of the rear end of the frame 1, a cylinder 12 is installed between the feeding swing frame 19 and the upper portion of the rear end of the frame 1 as a swing frame driving device, and a discharge driving device is installed above the feeding swing frame 19. A feed roller 5 is mounted above the front of the rear end of the frame 1. The peripheral surface of the discharging driving roller 15 is generally provided with a material with a large friction force, such as rubber, plastic or the surface of a metal rod is provided with anti-skid grains.

The utility model discloses the modified essential is: the conveying roller 5 is provided with only one conveying roller, and a bamboo curtain 2 which naturally hangs down is arranged in front of the conveying roller 5 and is used as a raw material lower stretching mechanism. The discharging driving device comprises a first swing arm 27, a discharging driving roller 15 and a swing arm driving device, the bottom end of the first swing arm 27 is hinged to an upper cross beam 26 at the rear end of the rack 1, and the discharging driving roller 15 is installed at the top end of the first swing arm 27; an air cylinder 29 capable of driving the first swing arm 27 to swing up and down is installed between the first swing arm 27 and the lower beam 11 at the rear end of the frame 1 as a swing arm driving device. The conveying roller 5 and the discharging driving roller 15 are in transmission connection with a driving device.

The rotary drive device of this embodiment includes a first motor 10 and a second motor 28. The first motor 10 is arranged at the right lower part of the conveying roller 5 and is in transmission connection with the conveying roller through a transmission mechanism (such as a synchronous belt transmission mechanism and a chain transmission mechanism); the second motor 28 is installed at the top end of the first swing arm 27, and the discharging driving roller 15 is directly connected with the output shaft of the second motor 28 or connected with the output shaft through a transmission (the lower end of the second motor 28 is provided with a transmission, and the output shafts at the left end and the right end of the transmission are respectively and coaxially connected with a discharging driving roller 15). The blowing driving roll 15 is pressed on the top of the raw material (roll) 14 by self weight, and the two are tangent. A second motor 28 may also be mounted on the frame 1 to drive the discharge drive roller 15 to rotate via a transmission mechanism (not shown).

Referring to fig. 2, in the second embodiment of the present invention, on the basis of the previous embodiment, an air curtain machine 4 is added beside the bamboo curtain 3, and an air outlet of the air curtain machine 4 faces downward.

The air curtain machine 4 may also be used in place of the bamboo curtain 3 in the first embodiment.

Referring to fig. 1 to 4, the shaft of the feeding roller 5 according to the above embodiment of the present invention is made of a cylindrical metal material, and a rubber roller is provided on the outer periphery thereof.

A spring belt support roller 6 may be installed in parallel to the feed roller 5 below the feed roller, concave rings 51 may be provided at equal intervals on the outer circumferential surface of the feed roller 5, a concave ring similar to the concave ring 51 may be provided on the outer circumferential surface of the spring belt support roller 6, and a closed-loop spring belt 18 made of a coil spring may be wound between the concave ring 51 of the feed roller 5 and the concave ring of the spring belt support roller 6. The function of the spring band 18 is to prevent the plastic film 14 passing behind the feed roller 5 from being sucked up against the feed roller 5 by electrostatic forces.

The cross section of the conveying roller 5 of the present invention may be a regular polygon (not shown).

Referring to fig. 5 and 6, the present invention can also be provided with a cavity in the cylindrical and regular polygonal conveying roller 5, and a plurality of suction holes 52 communicated with the cavity are provided on the outer peripheral surface of the conveying roller 5; an air injection ring 53 is hermetically and rotatably mounted on a shaft at one end of the conveying roller 5, an air injection nozzle 54 is arranged on the air injection ring 53, and the air injection nozzle 54 is communicated with a cavity in the conveying roller 5 through the air injection ring 53. When in use, the air injection nozzle 54 is connected with an air suction pump, and the plastic film bypassing the conveying roller 5 is adsorbed through the air suction holes 52, so that the driving force of the conveying roller 5 on the plastic film is increased.

Referring to fig. 7 and 8, the cross section of the feed roller 5 of the present invention is a straight line or a plurality of radial lines (the plurality of radial lines are shown by dotted lines in fig. 8) uniformly distributed along the original axial center, and an arc-shaped tip 55 (each radial line is approximately T-shaped) is provided at the tip of the straight line or the plurality of radial lines.

Referring to fig. 9 and 10, the conveying roller 5 of the present invention may also be a cylindrical brush structure.

Referring to fig. 11, an embodiment of a third overall structure of the present invention is based on the embodiment shown in fig. 1 and fig. 2, a friction increasing mechanism for increasing the friction between the raw material and the conveying roller is arranged in front of and above the conveying roller 5, and the friction increasing mechanism in fig. 11 is a shifting roller 17.

The friction increasing mechanism comprises a plectrum roller 17, an air blowing pipe 22 or a press roller 23.

As shown in fig. 12 and 13, the pick roller 17 has a structure in which elastic blades 171 are provided on the outer peripheral surface of the pick roller 17 so as to be uniformly distributed along the circumference. The blades 171 are axially spaced at equal intervals (may be continuous). The pick roller 17 is driven by a separate motor or by the motor 10. The elastic blades 171 are used for applying adhesive force to the plastic film bypassing the conveying roller 5, so that the friction force between the conveying roller 5 and the plastic film is increased, the plastic film can be smoothed, and wrinkles are avoided.

The combined structure of the blowpipe 22 and the conveying roller 5 is shown in fig. 14, and a gas outlet hole or a gas outlet nozzle 221 is provided on the side of the blowpipe 22 facing the conveying roller 5. The air ejected from the air outlet nozzle 221 exerts an adhesive force on the plastic film that has passed around the feed roller 5, similarly to the action of the above-described pick roller 17.

The combination structure of the press roller 23 and the conveying roller 5 is shown in fig. 15, two ends of the press roller 23 are rotatably connected to one end of a second swing arm 24, the other end of the second swing arm 24 is rotatably connected to a support shaft 25, and the support shaft 25 is mounted on the frame 1. The press roller 23 presses the plastic film on the feed roller 5 by its own weight, and also increases the frictional force between the feed roller 5 and the plastic film. The pressing roller 23 can be disposed in front of and above or behind the conveying roller 5 by a second swing arm 24, and functions substantially the same. The use of the pressing roller 23 as the friction increasing mechanism is suitable only for the cylindrical conveying roller 5 shown in fig. 3 and 5 (the conveying roller in fig. 5 generally does not require the pressing roller 23 to be attached because of suction.

The utility model discloses a swing span drive arrangement and swing arm drive arrangement except adopting the cylinder, also can adopt the electric actuator who has the same function, like electric putter, the motor is connected with drive mechanism (any existing device such as link mechanism, gear train).

Referring to fig. 17, the feeding roller 5 and the discharging driving roller 15 may share a motor (in this embodiment, a second motor 28 is shared as a rotation driving device), and the motor is in transmission connection with the second motor 28 mounted at the top end of the first swing arm 27 through a transmission mechanism. The specific connection structure is as follows: the shaft of the feeding driving roller 15 drives the shaft of the conveying roller 5 through a transmission belt 31, an intermediate transmission wheel 30 and a transmission belt 32 in sequence, and a synchronous belt transmission mechanism or a chain wheel transmission mechanism can be adopted; the intermediate transmission wheel 3 is mounted on the frame 1 and is arranged coaxially with the hinge axis at the bottom end of the first swing arm 27, so that the length of the transmission belt 31 does not change when the first swing arm 27 swings.

Referring to fig. 18, the second motor 28 in the embodiment shown in fig. 17 may also be mounted on the frame 1, the second motor 28 driving the rotation of the intermediate transmission wheel 30 via the transmission belt 33 or directly, the intermediate transmission wheel 30 driving the rotation of the discharge driving roller 15 and the conveying roller 5 via the transmission belt 31 and the transmission belt 32, respectively.

The utility model discloses still can conveying roller 5 the back be equipped with arresting gear 7, arresting gear 7 can adopt the cylinder to drive the depression bar of connecting on its lower extreme piston rod and reciprocate, the depression bar below have the die-pin, the cylinder drives the depression bar downstream during the braking, will clip through the plastic film 14 of depression bar and die-pin.

A heat sealing device 8 is arranged behind the braking device 7, and a guide roller 20 and a guide roller 9 are respectively arranged between the braking device 7 and the conveying roller 5 and behind the heat sealing device 8. A photoelectric sensor 21 is arranged above the discharging driving roller 15.

If the braking device 7 and the heat sealing device 8 are not provided, when the raw material plastic film 14 is used up or broken, an operator needs to mount the raw material end through a plurality of parts in front of and behind the conveying roller 5, which is very troublesome and reduces the working efficiency.

The braking device 7 and the heat sealing device 8 have the following functions: when the raw plastic film 14 is used up or broken, the photoelectric sensor 21 sends a signal to a controller of the bag making machine, the controller stops the machine and controls the brake device 7 to act to clamp the plastic film 14, an operator uses the heat sealing device 8 to heat-seal the front end and the rear end of the plastic film 14 together, and the bag making machine is restarted, so that the operation time is greatly saved, and the work efficiency is improved.

The utility model discloses when using, lift up blowing drive roll 15 earlier through cylinder 29 and first swing arm 27, rethread cylinder 12 puts down feed swing span 19, will roll up in the recess of putting on the feed swing span 19 of both ends axle of the raw materials roller 13 of full plastic film 14. Then the end of the plastic film 14 is sequentially passed forwards through two guide rollers 9, a heat sealing device 8, a braking device 7, a guide roller 20, the top of the rubber conveying roller 5 and the bottom of the bamboo curtain 3 to a rear station. After the bag making machine is started, the motor 10 (or the motor 28) drives the rubber conveying roller 5 to rotate, and the material discharging driving roller 15 drives the raw material roller 13 to rotate through friction force. Air curtain machine 4 is bloied downwards and is applyed decurrent effort with plastic film 14 below with the combined action of bamboo curtain 3, make the plastic film 14 of this department extend, and make plastic film 14 and the abundant laminating in rubber conveying roller 5 surface on rubber conveying roller 5, rubber conveying roller 5 drives plastic film 14 through frictional force forward drive, two rubber conveying roller 5 centre gripping plastic film's effect has been played promptly, the phenomenon of producing the fold with two rubber conveying roller centre gripping plastic film has been avoided again.

Claims (16)

1. A feeding device of a non-stretching bag making machine with an upper driving mode comprises a frame (1), wherein a feeding swing frame (19) is hinged to the lower portion of the rear end of the frame (1), a swing frame driving device is arranged between the feeding swing frame (19) and the upper portion of the rear end of the frame (1), and a discharging driving device is arranged on the frame (1) near the feeding swing frame (19); a conveying roller (5) is arranged above the front part of the rear end of the frame (1), and is characterized in that only one conveying roller (5) is arranged, and a raw material lower stretching mechanism is arranged in front of the conveying roller (5); the feeding driving device comprises a first swing arm (27), a feeding driving roller (15) and a swing arm driving device, the bottom end of the first swing arm (27) is hinged to the rear end of the rack (1), and the feeding driving roller (15) is installed at the top end of the first swing arm (27); a swing arm driving device capable of driving the first swing arm (27) to swing up and down is arranged between the first swing arm (27) and the rear end of the frame (1); the conveying roller (5) and the discharging driving roller (15) are in transmission connection with a rotation driving device.

2. The feeding device of upper driving type non-stretching bag making machine as claimed in claim 1, wherein said material lower stretching means is a bamboo curtain (3) or/and an air curtain (4), said air curtain (4) is disposed beside said bamboo curtain (3), and an air outlet of said air curtain (4) is downward.

3. The top-drive-type non-stretching bag-making machine feeding device according to claim 1 or 2, wherein the shaft of the feed roller (5) is made of a cylindrical metal material and a rubber roller is provided on the outer periphery thereof.

4. The feeder of the top drive type non-stretching bag making machine according to claim 3, wherein a spring band supporting roller (6) is installed in parallel with the feed roller (5) below the feed roller, concave rings are provided at equal intervals on the outer peripheral surfaces of the feed roller (5) and the spring band supporting roller (6), and a spring band (18) of a closed loop made of a coil spring is wound around between the concave ring (51) of the feed roller (5) and the concave ring of the spring band supporting roller (6).

5. The upper-drive-type non-stretching bag-making machine feeding device according to claim 1 or 2, wherein the cross section of the feed roller (5) is a regular polygon.

6. The top-drive-type non-stretching bag-making machine feeding device according to claim 4, wherein said feed roller (5) has a cavity, and a plurality of suction holes (52) communicating with the cavity are provided on the outer peripheral surface of the feed roller (5); an air injection ring (53) is hermetically and rotatably mounted on a shaft at one end of the conveying roller (5), and an air injection nozzle (54) is arranged on the air injection ring (53).

7. The upper driving type non-stretching bag making machine feeding device as claimed in claim 4, wherein a friction increasing mechanism for increasing the friction between the raw material and the conveying roller is arranged in front of and above the conveying roller (5), the friction increasing mechanism comprises a press roller (23), a shifting sheet roller (17) or an air blowing pipe (22), two ends of the press roller (23) are rotatably connected to one end of a second swing arm (24), the other end of the second swing arm (24) is rotatably connected to a supporting shaft (25), and the supporting shaft (25) is mounted on the frame (1); elastic blades (171) are uniformly distributed along the circumference of the outer circumferential surface of the shifting sheet roller (17); an air outlet hole or an air outlet nozzle (221) is arranged on one side of the air blowing pipe (22) facing the conveying roller (5).

8. The top drive type non-stretching bag machine feeder of claim 7, wherein said blades (171) are axially spaced at equal intervals.

9. The upper-driving-type non-stretching bag-making machine feeding device as claimed in claim 1 or 2, wherein said feed roller (5) has a cylindrical brush structure; or the cross section of the conveying roller (5) is in a straight line shape or a plurality of radial lines which are uniformly distributed along the original axial center, and arc-shaped top ends (55) are arranged at the top ends of the straight line shape and the plurality of radial lines.

10. The upper driving type non-stretching bag making machine feeding device as claimed in claim 9, wherein a friction increasing mechanism for increasing the friction between the raw material and the conveying roller is provided in front of and above the conveying roller (5), the friction increasing mechanism comprises a shifting roller (17) or an air blowing pipe (22), and elastic blades (171) are provided on the outer circumferential surface of the shifting roller (17) and are uniformly distributed along the circumference; an air outlet hole or an air outlet nozzle (221) is arranged on one side of the air blowing pipe (22) facing the conveying roller (5).

11. The top drive type non-stretching bag machine feeder of claim 10, wherein said blades (171) are axially spaced at equal intervals.

12. The upper driving type non-stretching bag making machine feeding device as claimed in claim 1, wherein said swing frame driving means and said swing arm driving means are air cylinders (12, 29), respectively, or electric means having the same function as the air cylinders.

13. The upper-drive-type non-stretching bag-making machine feeding device according to claim 1, wherein a brake device (7) is provided behind said feed roller (5), a heat-sealing device (8) is provided behind said brake device (7), and a guide roller (20, 9) is provided between said brake device (7) and said feed roller (5) and behind said heat-sealing device (8), respectively; and a photoelectric sensor (21) is arranged below the rear part of the heat sealing device (8).

14. The top drive type non-stretch bag machine feeder of claim 1, wherein said rotary drive means comprises a first motor (10) and a second motor (28); the first motor (10) is arranged beside the conveying roller (5) and is in transmission connection with the conveying roller through a transmission mechanism; the second motor (28) is arranged at the top end of the first swing arm (27) or on the frame (1), and the discharging driving roller (15) is directly connected with an output shaft of the second motor (28) or connected with the output shaft through a speed changer.

15. The feeding device of the upper driving type non-stretching bag making machine as claimed in claim 1, wherein the rotary driving device is a second motor (28), the second motor (28) is installed at the top end of the first swing arm (27), the discharging driving roller (15) is directly connected with the output shaft of the second motor (28) or connected with a transmission, and the shaft of the discharging driving roller (15) is in transmission connection with the shaft of the conveying roller (5) through a transmission mechanism.

16. The top-drive-type non-stretching bag-making machine feeding device as claimed in claim 1, wherein said rotary drive device is a second motor (28), and said second motor (28) is mounted on said frame (1) and is in transmission connection with the shafts of said discharging drive roller (15) and said feed roller (5) through a transmission mechanism.

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