Roll paper film wrapping mechanism

Abstract

The utility model discloses a roll paper film wrapping mechanism which comprises a paper roll and a paper winding shaft, the paper roll is wound on the surface of the paper winding shaft, the paper winding shaft is placed on a roller placing frame, a transmission mechanism controls the paper winding shaft to rotate and enables a film to wrap the surface of the paper roll, and the transmission mechanism comprises a lifting air cylinder, a gear motor and a tire. The lifting air cylinder is fixed to the portion, on one side of the roller placing frame, of the rack and used for controlling the gear motor to ascend and descend, the gear motor is used for controlling the tire to rotate, and the tire can drive the paper winding shaft to rotate after making contact with the shaft head of the paper winding shaft. The transmission mechanism of the roll paper film wrapping mechanism drives the roll paper shaft to rotate by means of friction force of the tire, meets the requirement of low-speed rotating equipment, and can avoid damage to the roll paper shaft; in addition, the mechanism can also realize direct film coating on the raw paper, the raw paper after being unwound does not need to change the shaft, does not need to design a shaft sleeve and the like, and the prepared raw paper and the raw paper shaft are directly erected on a roller placing frame.

Description

Technical Field

[0001] The utility model relates to a film wrapping mechanism, in particular to a roll paper film wrapping mechanism. Background Art

[0002] At present, the existing roll paper film wrapping mechanisms are basically only applicable to the production of cut roll paper, and cannot be used for the original paper, and the operation process is not simple enough; in addition, most film wrapping machines lift the roll paper in the air and rely on the friction between the paper and the roller, and the motor drives the shaft to rotate, which causes great damage to the roll paper shaft, such as patent CN220563061 U. Summary of the Utility Model

[0003] Purpose of the utility model: The utility model aims to provide a roll paper film wrapping mechanism in which the transmission device does not damage the roll paper shaft and can directly wrap the original paper.

[0004] Technical solution: The roll paper film wrapping mechanism described in the utility model includes a paper roll and a roll paper shaft. The paper roll is wound around the surface of the roll paper shaft. The roll paper shaft is placed on a rest roller frame. The transmission mechanism controls the rotation of the roll paper shaft and at the same time wraps the film on the surface of the paper roll. The transmission mechanism includes a lifting cylinder, a gear motor and a tire. The lifting cylinder is fixed on the frame on one side of the rest roller frame and is used to control the lifting of the gear motor. The gear motor is used to control the rotation of the tire. After the tire contacts the shaft head of the roll paper shaft, it can drive the roll paper shaft to rotate.

[0005] Further, the piston rod of the cylinder is connected to the bottom of the gear motor by bolts, and the gear motor is connected to the frame by a hinge.

[0006] Further, the tire and the wheel hub are fixed together on the output end shaft head of the gear motor.

[0007] Further, the device further includes a film transporting trolley. After the gear motor is started, the film wrapping trolley moves forward along the direction parallel to the roll paper shaft.

[0008] Further, when the bottom of the lifting cylinder intakes air, the gear motor makes an upward rotational movement around the hinge until the tire contacts the shaft head of the roll paper shaft; after the film wrapping is completed, the lifting cylinder contracts, the gear motor descends, the tire disengages from the roll paper shaft, and the roll paper shaft stops rotating.

[0009] Beneficial effects: Compared with the prior art, the utility model has the following advantages: The transmission mechanism drives the rotation of the roll paper shaft by relying on the friction of the tire, which meets the requirements of equipment for low-speed rotation and can avoid damage to the roll paper shaft; in addition, this mechanism can also directly wrap the original paper. After the original paper is wound up, there is no need to change the shaft or design a shaft sleeve, etc. The prepared original paper together with the original paper shaft can be directly placed on the rest roller frame. Description of the Drawings

[0010] Figure 1 This is a structural diagram of the device of the present utility model. DETAILED DESCRIPTION

[0011] The technical solution of the present utility model will be further described below with reference to the accompanying drawings.

[0012] Figure 1 The accompanying drawings are described as follows: 1-paper roll; 2-paper reel; 3-roller rack; 4-PE film; 5-film transport trolley; 6-lifting cylinder; 7-gear motor; 8-tire.

[0013] Example

[0014] The roll paper film wrapping device includes a paper roll 1 and a paper roll shaft 2, wherein the paper roll 1 is wound on the surface of the paper roll shaft 2, and the paper roll shaft 2 is placed on a roller rack 3. The transmission mechanism controls the rotation of the paper roll shaft 2 and wraps the film on the surface of the paper roll 1. The transmission mechanism includes a lifting cylinder 6 (cylinder diameter 60mm, piston rod length 200mm), a gear motor 7 (power 1.5KW, output speed 20-25 rpm) and a tire 8 (specification 165-70 / R3). The lifting cylinder 6 is fixed on the frame on one side of the roller rack 3 and is used to control the lifting and lowering of the gear motor 7. The gear motor 7 is used to control the rotation of the tire 8. After the tire 8 contacts the shaft head of the paper roll shaft 2, it can drive the paper roll shaft 2 to rotate. Among them, the piston rod of the lifting cylinder 6 is connected to the bottom of the gear motor 7 by bolts, and the gear motor 7 is connected to the frame by a hinge. The tire 8 and the wheel hub are fixed together on the output end shaft head of the gear motor 7. The contact and separation of the tire 8 and the paper reel 2 are achieved by the lifting of the lifting cylinder 6 (the manual switch realizes the reversal of the air source tube electromagnetic valve and controls the lifting of the cylinder).

[0015] When air is introduced to the bottom of the lifting cylinder 6 (at a pressure of 3 bar), the gear motor 7 rotates upward around the hinge until the tire 8 makes contact with the head of the paper reel 2. At this point, the cylinder maintains pressure. The PE film 4 on the film transport trolley 5 is pulled out to a length of 1.5 meters and inserted into the end of the paper roll to secure it. The film transport trolley 5 then moves at a constant speed parallel to the paper reel 2 to wrap the paper. The film must evenly and completely cover the paper surface.

[0016] When wrapping is complete, manually press the button on lift cylinder 6 to open it. The solenoid valve on the air supply pipe reverses direction, retracting lift cylinder 6 and lowering gear motor 7. The tire detaches from paper reel 2, which loses power and stops rotating. At this point, the gear motor switch is turned off, stopping operation and separating paper roll 1 from the PE film 4 on the film transport trolley 5. The transmission mechanism relies on the friction of tire 8 to drive the paper reel 2, which is suitable for low-speed rotation equipment and can avoid damage to the paper reel 2. When wrapping another paper roll, the base paper and its shaft can be directly placed on the roller rack 3 without changing shafts, which is simple and quick.

Claims

1. A roll paper coating mechanism, comprising a paper roll (1) and a roll paper shaft (2), the paper roll (1) being wound around the surface of the roll paper shaft (2), characterized in that, The paper roll shaft (2) is placed on the roller support frame (3), and the transmission mechanism controls the rotation of the paper roll shaft (2) while covering the film on the surface of the paper roll (1). The transmission mechanism includes a lifting cylinder (6), a gear motor (7), and a tire (8). The lifting cylinder (6) is fixed on the frame on one side of the roller support frame (3) and is used to control the lifting of the gear motor (7). The gear motor (7) is used to control the rotation of the tire (8), and when the tire (8) contacts the shaft head of the paper roll shaft (2), it can drive the paper roll shaft (2) to rotate.

2. The roll paper coating mechanism according to claim 1, characterized in that, The paper roll (1) is a base paper roll, and the paper roll shaft (2) is a base paper shaft.

3. The roll paper coating mechanism according to claim 1, characterized in that, The piston rod of the lifting cylinder (6) is bolted to the bottom of the gear motor (7).

4. The roll paper coating mechanism according to claim 1, characterized in that, The gear motor (7) is hinged to the frame.

5. The roll paper coating mechanism according to claim 1, characterized in that, The tire (8) and the wheel hub are fixed together on the output shaft head of the gear motor (7).

6. The roll paper coating mechanism according to claim 1, characterized in that The device further includes a film transport trolley (5).

7. The roll paper coating mechanism according to claim 6, wherein, After the gear motor (7) is started, the film transport trolley (5) advances in a direction parallel to the paper roll shaft (2).

8. The roll paper coating mechanism according to claim 1, characterized in that, When air enters the bottom of the lifting cylinder (6), the gear motor (7) makes an upward rotational movement around the hinge until the tire (8) contacts the shaft head of the paper roll shaft (2).

9. The roll paper coating mechanism according to claim 1, characterized in that, After the film wrapping is completed, the lifting cylinder (6) contracts, the gear motor (7) descends, the tire disengages from the paper roll shaft (2), and the paper roll shaft (2) stops rotating.

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