Film blowing extension device for degradable plastic bag

Abstract

The utility model belongs to the field of film blowing extension devices, and particularly relates to a film blowing extension device of a degradable plastic bag, which comprises a frame, an extension mold core seat is fixedly connected in the lower end of the frame, an air cooling mechanism is arranged on the frame, a support frame is fixedly connected at the upper end of the frame, and the support frame is provided with an air outlet. A supporting frame is fixedly connected to the upper end of the frame, a supporting roller is installed in the supporting frame through a bearing, a guide frame is fixedly connected to the upper end of the frame, two symmetrically-distributed roller frames are slidably connected to the outer side of the guide frame, a tensioning roller is jointly installed in the two roller frames through a bearing, and a spring is arranged on the outer side of the guide frame. According to the plastic bag winding device, the screw rod, the adjusting frame, the spring and other structures are additionally arranged on the frame, the tensioning roller in the roller frame can be pushed through the elastic force of the spring to apply downward pressure to a plastic bag, the winding resistance of the plastic bag can be increased through the downward pressure, and therefore the plastic bag can be wound more tightly.

Description

TECHNICAL FIELD

[0001] The utility model relates to blow film extension device technical field, concretely is a kind of blow film extension device of degradable plastic bag. BACKGROUND

[0002] In the process of producing degradable plastic bag, the raw material can be extended and formed by blow film extension equipment, according to the patent authorized announcement No.CN219523034U proposes a kind of blow film extension device of plastic bag, the utility model discloses a kind of blow film extension device of plastic bag, including blow film frame, the bottom of the blow film frame is provided with film head, the middle part of the film head is provided with circular groove, the center of the circular groove is provided with exhaust pipe, rotatable blow ring is arranged between the film head and the exhaust pipe, the blow ring is connected with the bottom of the blow film frame by drive assembly, the upper side of the blow ring is equidistantly provided with a plurality of nozzles around the exhaust pipe, wherein, annular plenum is formed between the blow ring and the film head, the plenum is communicated with each nozzle;

[0003] But the blow film extension device in prior art needs to be rolled up after the plastic bag is extended, but the resistance of recovery is small in the process of rolling up, so that the plastic bag wound is not compact, affect the quality of rolling up, and after the plastic bag is heated and formed, the temperature is too high in the process of moving, easy to cause the adhesion of internal cavity, affect the quality of plastic bag. Therefore, the prior art needs to be improved. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of blow film extension device of degradable plastic bag, solve the problem that the resistance of rolling up is small and is easy to be rolled up unevenly and plastic bag is rolled up and is easy to overheat.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of blow film extension device of degradable plastic bag, including frame, the lower end inside fixed connection of the frame has extension die core seat, air cooling mechanism is provided on the frame, the upper end fixed connection of the frame has support frame, the inside of the support frame is installed with support roller by bearing, the upper end fixed connection of the frame has guide frame, the outer side of the guide frame is slidably connected with two symmetrically distributed roller frames, the inside of two roller frames is installed with tension roller by bearing in common, the outer side of the guide frame is provided with spring, the outer side of the guide frame is slidably connected with adjusting frame, the inside of the guide frame is installed with two symmetrically distributed screw rods by bearing, the upper end of the guide frame is fixedly installed with double-shaft motor, the output shaft outer side of the double-shaft motor is fixedly connected with two symmetrically distributed bevel gear shafts, the outer side upper portion of the screw rod is fixedly connected with bevel gear ring.

[0006] Preferably, a feeding tube is fixedly connected to the lower outer side of the extended mold core seat, and a guide post is fixedly connected to the upper middle part of the extended mold core seat, which can guide the plastic bag.

[0007] Preferably, one end of the spring is fixedly connected to the adjusting frame, and the other end of the spring is fixedly connected to the roller frame. The spring can support the roller frame through its elastic force.

[0008] Preferably, the screw is connected to the adjusting frame by a thread, the bevel gear ring meshes with the bevel gear shaft, and the bevel gear shaft can drive the screw to rotate through the bevel gear ring.

[0009] Preferably, a support base is fixedly connected to the upper end of the guide frame, and the support base is connected to the bevel gear shaft through a bearing, so that the support base can support the bevel gear shaft.

[0010] Preferably, the air-cooling mechanism includes connecting plates, and multiple evenly distributed connecting plates are fixedly connected inside the frame. A perforated tube is fixedly connected inside the multiple connecting plates. Four evenly distributed fans are fixedly connected to the middle of the outer side of the frame. A mounting frame is fixedly connected to the upper end of the perforated tube. A guide roller is installed inside the mounting frame through a bearing. The four fans can exert force from four directions, which can prevent the plastic bag from shifting after being subjected to force.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model, by adding screws, adjusting frames and springs to the frame, can use the spring force to push the tension roller inside the roller frame to apply downward pressure to the plastic bag. This downward pressure can increase the rolling resistance of the plastic bag, thereby making the plastic bag roll more tightly.

[0013] 2. This utility model adds a fan, perforated tube and guide roller to the frame. After the plastic bag is stretched and formed, the fan can drive the air flow speed around the plastic bag during the upward movement. The airflow can cool the plastic bag and effectively prevent the plastic bag from sticking due to overheating during the rolling process. Attached Figure Description

[0014] Figure 1 This is a perspective view of the overall structure of this utility model;

[0015] Figure 2 For the present utility model Figure 1 A magnified 3D view of the local structure;

[0016] Figure 3 For the present utility model Figure 1 A three-dimensional magnified view of the perforated tube;

[0017] Figure 4 The utility model discloses a Figure 2 The A part structure of the utility model discloses a

[0018] In the drawing: 1, frame, 2, extension mould core seat, 3, guide column, 4, feeding pipe, 5, air cooling mechanism, 6, support frame, 7, support roller, 8, guide frame, 9, roller frame, 10, tension roller, 11, spring, 12, adjusting frame, 13, screw rod, 14, bevel gear ring, 15, double-shaft motor, 16, bevel gear shaft, 17, support seat, 51, connecting plate, 52, hole pipe, 53, fan, 54, mounting bracket, 55, guide roller. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative work belong to the scope of the utility model protection.

[0020] Please refer to Figure 1 、 Figure 2 、 Figure 4 A blow film extension device of degradable plastic bag, including frame 1, the lower end inside fixedly connected with extension mould core seat 2 of frame 1, be provided with air cooling mechanism 5 on frame 1, the upper end fixedly connected with support frame 6 of frame 1, the inside of support frame 6 is installed with support roller 7 through bearing, the upper end fixedly connected with guide frame 8 of frame 1, the outside of guide frame 8 is slidably connected with two symmetrical distribution roller frames 9, the inside of two roller frames 9 is installed with tension roller 10 through bearing, the outside of guide frame 8 is provided with spring 11, the outside of guide frame 8 is slidably connected with adjusting frame 12, the inside of guide frame 8 is installed with two symmetrical distribution screw rods 13 through bearing, the upper end fixedly installed with double-shaft motor 15 of guide frame 8, the output shaft outside fixedly connected with two symmetrical distribution bevel gear shafts 16 of double-shaft motor 15, the outside upper portion of screw rod 13 is fixedly connected with bevel gear ring 14.

[0021] Please refer to Figure 1 、 Figure 2 、 Figure 4The lower end outer side of the extension mold core seat 2 is fixedly connected with a feeding pipe 4, the upper end middle part of the extension mold core seat 2 is fixedly connected with a guide column 3, the guide column 3 can guide the plastic bag, one end of a spring 11 is fixedly connected with an adjusting frame 12, the other end of the spring 11 is fixedly connected with a roller frame 9, the spring 11 can support the roller frame 9 through elastic force, a screw rod 13 is connected with the adjusting frame 12 through screw threads, a bevel gear ring 14 is engaged with a bevel gear shaft 16, the bevel gear shaft 16 can drive the screw rod 13 to rotate through the bevel gear ring 14, the upper end of a guide frame 8 is fixedly connected with a supporting seat 17, the supporting seat 17 is connected with the bevel gear shaft 16 through a bearing, and the supporting seat 17 can support the bevel gear shaft 16.

[0022] Please refer to Figure 1 、 Figure 3 The air cooling mechanism 5 comprises a connecting plate 51, a plurality of uniformly distributed connecting plates 51 are fixedly connected in the inside of the frame 1, the inside of the plurality of connecting plates 51 is fixedly connected with a hole pipe 52 in common, four uniformly distributed fans 53 are fixedly connected to the middle part of the outside of the frame 1, the upper end of the hole pipe 52 is fixedly connected with a mounting frame 54, a guide roller 55 is mounted in the inside of the mounting frame 54 through a bearing, and the four fans 53 can generate attraction force from four directions, so that the plastic bag can be prevented from deviating after being stressed.

[0023] The specific implementation process of the utility model is as follows: in use, after the raw materials are formed by the extension mold core seat 2, the plastic bag moves upwards, the plastic bag passes through the upper part of the supporting roller 7 and the lower part of the tensioning roller 10, and then is wound on the outside of the winding wheel, then when the plastic bag is produced, the fan 53 is started, the fan 53 drives the airflow to flow around the plastic bag, the airflow exchanges heat with the plastic bag in the flowing process, so that the plastic bag can be cooled, and meanwhile the plastic bag can move in the inside of the hole pipe 52, so that the plastic bag can be prevented from deviating;

[0024] In the process of winding the plastic bag, the elastic force of the spring 11 pushes the tensioning roller 10 in the inside of the roller frame 9 to be greater than the tensioning of the plastic bag, so that the winding resistance of the plastic bag can be improved, and the plastic bag can be wound more tightly, when the resistance needs to be adjusted, the double-shaft motor 15 is started, the double-shaft motor 15 drives the screw rod 13 to rotate through the bevel gear shaft 16 and the bevel gear ring 14, the screw rod 13 can drive the adjusting frame 12 to move in the rotating process, and the adjusting frame 12 can adjust the elastic force value of the spring 11, so that the resistance can be more conveniently adjusted.

[0025] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A blown film stretching device for biodegradable plastic bags, comprising a frame (1), characterized in that: An extension mold core seat (2) is fixedly connected to the lower end of the frame (1). A cooling mechanism (5) is provided on the frame (1). A support frame (6) is fixedly connected to the upper end of the frame (1). A support roller (7) is installed inside the support frame (6) through a bearing. A guide frame (8) is fixedly connected to the upper end of the frame (1). Two symmetrically distributed roller frames (9) are slidably connected to the outer side of the guide frame (8). A tension roller (10) is installed inside the two roller frames (9) through a bearing. A spring (11) is provided on the outer side of the guide frame (8). An adjusting frame (12) is slidably connected to the outer side of the guide frame (8). Two symmetrically distributed screws (13) are installed inside the guide frame (8) through a bearing. A dual-axis motor (15) is fixedly installed at the upper end of the guide frame (8). Two symmetrically distributed bevel gear shafts (16) are fixedly connected to the outer side of the output shaft of the dual-axis motor (15). A bevel gear ring (14) is fixedly connected to the upper part of the outer side of the screw (13).

2. The blown film stretching device for biodegradable plastic bags according to claim 1, characterized in that: The lower outer side of the extended mold core seat (2) is fixedly connected to a feeding tube (4), and the upper middle part of the extended mold core seat (2) is fixedly connected to a guide post (3).

3. The blown film stretching device for biodegradable plastic bags according to claim 1, characterized in that: One end of the spring (11) is fixedly connected to the adjusting frame (12), and the other end of the spring (11) is fixedly connected to the roller frame (9).

4. The blown film stretching device for biodegradable plastic bags according to claim 1, characterized in that: The screw (13) is connected to the adjusting frame (12) by a thread, and the bevel ring (14) meshes with the bevel gear shaft (16).

5. The blown film stretching device for a biodegradable plastic bag according to claim 1, characterized in that: The upper end of the guide frame (8) is fixedly connected to a support base (17), and the support base (17) is connected to the bevel gear shaft (16) through a bearing.

6. The blown film stretching device for a biodegradable plastic bag according to claim 1, characterized in that: The air-cooling mechanism (5) includes a connecting plate (51). Multiple evenly distributed connecting plates (51) are fixedly connected inside the frame (1). A perforated tube (52) is fixedly connected inside the multiple connecting plates (51). Four evenly distributed fans (53) are fixedly connected to the middle of the outer side of the frame (1). A mounting bracket (54) is fixedly connected to the upper end of the perforated tube (52). A guide roller (55) is installed inside the mounting bracket (54) through a bearing.

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