US 11,472,588 B2Granted

Width-adjustable packaging bag shaper, bag maker, packaging machine and method

AssigneesQingdao University of Technology, Ningbo Sanhan Alloy Material Co., Ltd.

InventorsChanghe Li, Baoteng Huang, Liang Luo, Xianzhi Liu, Yanbin Zhang, Dongzhou Jia, Min Yang, Yali Hou, Zhaorong Bing

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Abstract

A width-adjustable packaging bag shaper, a bag maker, a packaging machine, and a method. The packaging machine including the bag maker, a traction device and a heat sealing device are respectively arranged above the bag maker, and a width adjustment device adjusts the distances between different sub bottom plates in a front bottom plate and a rear bottom plate by using a leadscrew and slide block mechanism, and then adjusts the width of a bottom plate. The leadscrew and slide block mechanism is used as the width adjustment device of the automatic width-adjustable noodle packaging bag shaper system, and four bottom plates are respectively fixed to the width adjustment device, so the leadscrew and slide block mechanism in operation is accurate in range of adjustment, is suitable for various widths of packaging bags, and has very important significance for the three-dimensional shaping effect of the packaging bags.

Claims13

Dependent claims

A bag maker, comprising:

a width-adjustable packaging bag shaper, comprising two parts arranged symmetrically, the a width between the two parts being adjustable, a middle part serving as a guide surface, two sides of the shaper being side wings bent toward the middle part, and parts where portions of the side wings extend beyond the guide surface being bent toward a back of the guide surface to form back tilting angles;
and the shaper being configured such that when a packaging film passes, the packaging film begins to fold reversely inward by a certain angle;
and
a bag maker triangle plate, the bag maker triangle plate being located obliquely above the shaper, and being configured such that when the packaging film folded reversely inward by a certain angle passes through the bag maker triangle plate, two sides of the packaging film begin to move closer to a middle to form an approximately square packaging film, wherein:
one end of the guide surface of the shaper is connected to a bottom plate comprising a front bottom plate and a rear bottom plate, and the front bottom plate and the rear bottom plate are respectively composed of two sub bottom plates that each have a same structure;
and
the front bottom plate and the rear bottom plate are respectively connected to a width adjustment device, and the width adjustment device adjusts distances between different sub bottom plates in the front bottom plate and the rear bottom plate by using a leadscrew and slide block mechanism, and thereby adjusts a width of the bottom plate.

4 more elements

A control method for a packaging machine, comprising:

controlling a traction device to drive a packaging film to move, such that when the packaging film passes through a shaper, the packaging film begins to fold reversely inward by a certain angle;
and when the packaging film passes through a bag maker triangle plate, two sides of the packaging film begin to move closer to the middle to form an approximately square packaging film, thus completing preliminary shaping;
controlling the traction device and a heat sealing device to further drive the packaging film to a heat sealing wheel, wherein two sides of the packaging film are heated and sealed by the heat sealing device, thus completing heat sealing of the packaging film;
and
controlling a width adjustment device to adjust a width of the a front plate of the shaper and a bag maker, in order to change a width of a plastic packaging bag formed by the packaging film;
the controlling the width adjustment device including causing a stepper motor to rotate, wherein a coupling connects an output shaft of the stepper motor to one end of a leadscrew, the rotation of the stepper motor rotates the leadscrew, a pair of slide blocks are threadedly engaged with the leadscrew, and a distance of movement of the slide blocks correlates to a number of turns of the stepper motor;
wherein:
left and right parts of the leadscrew are threaded in different directions, and are respectively engaged with the slide blocks, such that when the leadscrew rotates clockwise or counterclockwise, the slide block isblocks are driven to move toward each other or away from each other;
the slide blocks are respectively connected to sub bottom plates of the bag maker by bottom plate fixing blocks, whereby the sub bottom plates of the bag maker will move toward or away from each other;
two traction wheels of the traction device squeeze the packaging film and move the packaging film forward by friction;
and
the heat sealing device drives the packaging film to move and thermally seals the packaging film at the same time.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/961,611Filed 29 Oct 2019
Priority: CN 201811296165.21 Nov 2018
Published: US 2021/0403191 A130 Dec 2021
Granted: 18 Oct 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification43 codes

B63B 35/44
Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for: floating buildings, stores,…
B65B 43/04
Forming, feeding, opening or setting-up containers or receptacles in association with packaging: forming flat bags from webs
B63B 1/107
With multiple hulls: semi-submersibles; Small waterline area multiple hull vessels and the like, e.g. SWATH
B65B 41/16
Feeding webs from rolls: by rollers