CN106742299B

CN106742299B - Material-saving tensioning device

Info

Publication number: CN106742299B
Application number: CN201611148959.5A
Authority: CN
Inventors: 蒋庆飞; 赖重兵; 周升平; 傅体强; 施经东
Original assignee: Zhejiang Shuanglin Machinery Ltd
Current assignee: Zhejiang Shuanglin Machinery Ltd
Priority date: 2016-12-13
Filing date: 2016-12-13
Publication date: 2022-08-26
Anticipated expiration: 2036-12-13
Also published as: CN106742299A

Abstract

A material-saving tensioning device comprises a rack, a bag placing mechanism, a coiled PE bag placing frame, a tensioning cylinder, a push plate and a cylinder mounting plate. The PE bag is placed on the coiled PE bag placing frame and then is pulled to the frame, the PE bag is turned over a non-power roller III which forms an angle of 45 degrees with the moving direction of the PE bag and is horizontally folded to a non-power roller II, and then the PE bag is turned over the non-power roller II and the non-power roller I to a bag placing mechanism. The bag opening structure of the bag placing mechanism opens the PE bag into a sleeve, and then the PE bag is sleeved on a pipe to be sleeved with a bag to complete the bag sleeving, sealing and cutting processes. The cylinder mounting plate is fixed on the right side of the frame, the two tensioning cylinders are respectively fixed at the front end and the rear end of the cylinder mounting plate, the front end and the rear end of the push plate are respectively connected with the pistons of the two tensioning cylinders, and the push plate is located on the right side of the PE bag and between the unpowered roller I and the unpowered roller II. When the bag is sleeved, the push plate and the PE belt are in a separation state, after the bag is sleeved and cut, the push plate moves leftwards to push the PE bag to retract, and the process is repeated.

Description

Material-saving tensioning device

Technical Field

The invention relates to a production technology of a tubular product packaging bag, in particular to a packaging bag manufacturing technology capable of saving materials.

Background

The pipe material in China has wide application, the market demand is increased year by year, and the output of each manufacturer is also increased year by year. The tube is packed before warehousing or transportation, generally, a plurality of thin tubes are bound together and packed in a rubber bag, or a single thick tube is packed in the rubber bag independently. At present, the existing pipe production line generally adopts a full-manual mode for packaging after products are off-line, or adopts a semi-automatic packaging mode combining manual operation and certain machinery for packaging, the degree of automation of the packaging method is low, a large amount of manpower, material resources and financial resources are required to be consumed, the labor intensity is high, the working efficiency is low, and the pipes to be packaged still occupy a large amount of storage sites. The other mode adopts an automatic winding film type packaging pipe, and although the mode adopts automatic packaging, the equipment cost is high and the film consumption is large.

Application No.: 201110238450.0, No. CN 102424133B, entitled "an automatic control system for bagging-type tube packaging" of China invention patent document discloses an automatic bagging device: the device comprises a pipe parameter input device, a special communication interface, a Programmable Logic Controller (PLC), a rotating speed measuring device, a traction rubber wheel control device, a traction rubber wheel, a sleeve rubber bag roll, a rubber bag sucker control device and a rubber bag sucker device, wherein the pipe parameter input device is connected with the PLC through the special communication interface, the PLC, the rotating speed measuring device, the sleeve rubber bag roll, the traction rubber wheel and the traction rubber wheel control device are sequentially connected to form a closed-loop system, the PLC is further connected with the rubber bag sucker control device, and the rubber bag sucker control device is connected with the rubber bag sucker device. The invention has obvious advantages, but also has the defects of complex structure, large bag consumption and poor overall economy.

Disclosure of Invention

The invention mainly aims to provide a material-saving tensioning device which can accurately control large consumption of a bag body and has a simple control structure.

The technical scheme adopted by the invention is as follows: a material-saving tensioning device comprises a rack, a bag placing mechanism, a coiled PE bag placing frame and a tensioning assembly. The tensioning assembly comprises a tensioning cylinder, a push plate and a cylinder mounting plate. The bag placing mechanism is arranged on the left side of the upper end of the rack, and the coiled PE bag placing frame is arranged in front of the lower end of the rack; the PE bag is placed on the coiled PE bag placing frame and then is pulled to the frame, firstly, the PE bag turns over a powerless roller III which forms an angle of 45 degrees with the moving direction of the PE bag and is folded to a powerless roller II in a horizontally moving mode, then the PE bag turns over the powerless roller II to move upwards, and then the PE bag turns over the powerless roller I and is folded to a bag placing mechanism. During the process, the PE bag is supported into a sleeve through a bag supporting structure of the bag placing mechanism, and the PE bag supported into the sleeve is sleeved on a to-be-bagged pipe placed on the left side of the bag placing mechanism under the pulling of the bag grabbing mechanism, and then bag sleeving, bag sealing and bag cutting are sequentially completed. The cylinder mounting plate is fixed on the right side of the frame, the two tensioning cylinders are respectively fixed at the front end and the rear end of the cylinder mounting plate, the front end and the rear end of the push plate are respectively connected with the pistons of the two tensioning cylinders, and the push plate is located on the right side of the PE bag and between the unpowered roller I and the unpowered roller II. When the bags are sleeved, the push plate and the PE bags are in a separation state, after the bags are sleeved and cut, the push plate moves leftwards to push the PE bags to retract, and the next bag sleeving is prepared in a repeated mode.

First, it should be noted that the bag discharging mechanism is provided with an unwinding resistance adjusting mechanism. According to the invention, the tensioning device is added in the traditional bag covering mechanism, before the bag grabbing mechanism returns to the original point, the tensioning cylinder piston extends outwards, the PE bag is tensioned by the push plate, the unwinding resistance of the bundled PE bag is adjusted to a proper position by the unwinding resistance adjusting mechanism, the tensioning assembly cannot pull the coiled PE bag, and only the PE bag in the bag placing mechanism can be pulled, so that the PE bag in the bag placing mechanism is forced to be pulled to the right. When the bag grabbing mechanism returns to the original point and grabs the bag, the contact distance between the PE bag and the bag grabbing mechanism can be greatly reduced, the bag grabbing mechanism cannot have the phenomenon that the bag is not firm, the bag grabbing mechanism pulls the PE bag opening to move right after grabbing, the unpowered roller I and the unpowered roller II are straightened, the air cylinder piston contracts right timely, the push plate is separated from the PE bag, and the bag sleeving heat sealing action in the next period starts. When the bag sleeving heat-sealing action in the next period is carried out, the PE bag is saved because the left end face of the PE bag is closer to the left heat-sealing position. In the traditional bagging device, the length margin of the PE bag outside the left side of the bag after bagging is large, and materials are wasted. And the PE bag is too long when extending out of the heat-sealing position after being packed, and is not beautiful. The PE bag is too long to extend out, which also affects the image of the company and gives people a feeling of resisting inferior-quality products. By utilizing the material-saving tensioning device, 2% of PE bag materials can be saved, the left and right ports have the same surplus length, and the end face seal is neat and attractive, so that the product grade can be greatly improved, and the company image is improved.

Preferably, the tensioning assembly is arranged at a position between the first unpowered roller and the second unpowered roller, which is offset from the second unpowered roller. According to the preferred scheme, the tensioning assembly is easy to install and debug.

Preferably, the first unpowered roller comprises an upper unpowered roller and a lower unpowered roller, when the PE bag is wound around the lower roller of the first unpowered roller, the upper roller of the first unpowered roller is pressed on the lower roller of the first unpowered roller, and the PE bag is clamped between the upper unpowered roller and the lower roller of the first unpowered roller. This preferred scheme is favorable to improving reliability and the stability that can economize material overspeed device tensioner work.

Preferably, a fourth unpowered roller is fixedly arranged between the coiled PE bag placing frame and the third unpowered roller. This preferred scheme is favorable to improving reliability and the stability that can economize material overspeed device tensioner work.

Preferably, the device further comprises a connecting frame, the rear end of the connecting frame is fixedly connected with the rack, and the lower end of the coiled PE bag placing frame is fixedly connected with the front end of the connecting frame. This preferred scheme, compact structure is reasonable, and it is easy to make, install.

Preferably, the bottom of the frame is provided with a height adjusting structure. This preferred scheme, the installation adjustment of being convenient for.

In conclusion, the beneficial effects of the invention are as follows: by utilizing the material-saving tensioning device, 2% of PE bag materials can be saved, the left and right port surplus lengths are the same, and the end face seal is neat and attractive, so that the product grade can be greatly improved, and the company image is improved.

Drawings

FIG. 1: the invention has a structure schematic diagram;

FIG. 2: a schematic top view of the present invention;

FIG. 3: the left view of the invention is schematically shown.

In the figure: the automatic bag unwinding device comprises a bag unwinding mechanism 1, a rack 2, a first unpowered roller 3, a second unpowered roller 4, a third unpowered roller 5, a fourth unpowered roller 6, a connecting frame 7, a coiled PE bag 8, a height adjusting structure 10, a coiled PE bag placing frame 11, a tensioning cylinder 21, a push plate 22, a cylinder mounting plate 23 and an unwinding resistance adjusting mechanism 24.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.

In the following description, each orientation is based on the structural schematic diagram of the present invention.

As shown in fig. 1, 2 and 3, the material-saving tensioning device comprises a frame 2, a bag placing mechanism 1, a coiled PE bag placing frame 11, a tensioning assembly and a PLC automatic control device (not shown in the figure). The tensioning assembly comprises a tensioning cylinder 21, a push plate 22 and a cylinder mounting plate 23; the bag placing mechanism 1 is arranged on the left side of the upper end of the rack 2, and the coiled PE bag placing rack 11 is arranged in front of the lower end of the rack 2; the coiled PE bag 8 is placed on a coiled PE bag placing frame 11 and is firstly pulled to the frame 1, firstly, the coiled PE bag is turned over a powerless roller three 5 which forms an angle of 45 degrees with the moving direction of the PE bag and is folded to a powerless roller two 4 in a horizontally moving way, then, the coiled PE bag is turned over the powerless roller two 4 to move upwards, then, the coiled PE bag is turned over a powerless roller one 3 to be folded to the bag placing mechanism 1 in a horizontally moving way, furthermore, the powerless roller one 3 comprises an upper unpowered roller and a lower unpowered roller, when the PE bag bypasses a lower roller of the powerless roller one 3, an upper roller (not shown in the figure) of the powerless roller one 3 is pressed on a lower roller of the powerless roller one 3, and the PE bag is clamped between the upper unpowered roller and the lower roller of the powerless roller one; during the process, the PE bag is stretched into a sleeve by a bag stretching structure of the bag placing mechanism 1, the PE bag stretched into the sleeve is pulled by a bag grasping mechanism (not shown in the figure) to be sleeved on a pipe to be sleeved on the left side of the bag placing mechanism 1, and then bag sleeving, bag sealing and bag cutting are sequentially completed; the cylinder mounting plate 23 of the tensioning assembly is fixed on the right side of the rack 2, the two tensioning cylinders 21 are respectively fixed at the front end and the rear end of the cylinder mounting plate 23, the push plate 22 is positioned on the left side of the two tensioning cylinders 21, the front end and the rear end of the push plate 22 are respectively connected with the pistons of the two tensioning cylinders 21, the push plate 22 is positioned on the right side of the PE bag and between the unpowered roller I and the unpowered roller II, and further, the tensioning assembly is arranged between the unpowered roller I3 and the unpowered roller II 4 and is deviated from the part of the unpowered roller II 4; when bagging is carried out, the push plate 22 and the PE bag are in a separation state, and after the bag is bagged and cut, the push plate 22 moves leftwards to push the PE bag to retract. The bag releasing mechanism 1 is provided with an releasing resistance adjusting mechanism 24, and the specific structural details are not described herein since they are related to the prior art.

Preferably, a fourth unpowered roller 6 is fixedly arranged between the third unpowered rollers 5, the axes of the fourth unpowered roller 6 and the third unpowered roller 5 are in the same horizontal plane, and the axes are positioned below the winding shaft of the coiled PE bag. In addition, the device also comprises a connecting frame 7, the rear end of the connecting frame 7 is fixedly connected with the rack, the lower end of a coiled PE bag placing frame 11 is fixedly connected with the front end of the connecting frame 7, and a height adjusting structure 10 is arranged at the bottom of the rack 2.

The above embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited thereto. Indeed, many equivalent variations in the shapes, constructions and design objectives of the devices according to the present invention are possible. Therefore, all equivalent changes in the shapes, structures and design objectives of the present invention are intended to be covered by the present invention, and all such equivalent changes are intended to be protected by the present invention.

Claims

1. A material-saving tensioning device comprises a rack (2), a bag placing mechanism (1) and a coiled PE bag placing rack (11); the method is characterized in that: the device also comprises a tensioning assembly, wherein the tensioning assembly comprises a tensioning cylinder (21), a push plate (22) and a cylinder mounting plate (23); the bag placing mechanism (1) is arranged on the left side of the upper end of the rack (2), and the coiled PE bag placing rack (11) is arranged in front of the lower end of the rack (2); the PE bag is placed on a coiled PE bag placing frame (11) and is firstly pulled to a rack (2), firstly, the PE bag turns over a third unpowered roller (5) which forms an angle of 45 degrees with the moving direction of the PE bag to horizontally move and fold to a second unpowered roller (4), then turns over the second unpowered roller (4) to move upwards, and turns over a first unpowered roller (3) to fold to a bag placing mechanism (1); during the process, a PE bag is supported into a sleeve through a bag supporting structure of the bag placing mechanism (1), the PE bag supported into the sleeve is sleeved on a pipe to be sleeved on the left side of the bag placing mechanism (1) under the pulling of the bag grabbing mechanism, and then bag sleeving, bag sealing and bag cutting processing are sequentially completed; the bag placing mechanism is provided with an unreeling resistance adjusting mechanism, before the bag grabbing mechanism returns to an original point, a tensioning cylinder piston extends outwards, a push plate tensions PE bags, the unreeling resistance adjusting mechanism adjusts the unreeling resistance of bundled PE bags to a proper position, a tensioning assembly cannot pull the coiled PE bags, and only the PE bags in the bag placing mechanism can be pulled, so that the PE bags of the bag placing mechanism are forced to be pulled rightwards; the cylinder mounting plate (23) is fixed on the right side of the rack (2), the two tensioning cylinders (21) are respectively fixed at the front end and the rear end of the cylinder mounting plate (23), the front end and the rear end of the push plate (22) are respectively connected with pistons of the two tensioning cylinders (21), and the push plate (22) is positioned on the right side of the PE bag and between the unpowered roller I and the unpowered roller II; when the bag is sleeved, the push plate (22) and the PE bag are in a separation state, and after the bag is sleeved and cut, the push plate (22) moves leftwards to push the PE bag to retract.

2. A economized tensioning device according to claim 1, characterized in that: the tensioning assembly is arranged at a position which is between the unpowered roller I (3) and the unpowered roller II (4) and is deviated from the unpowered roller II (4).

3. A material savable tensioner as claimed in claim 1, wherein: the unpowered roller I (3) comprises an upper unpowered roller and a lower unpowered roller, when the PE bag bypasses the lower roller of the unpowered roller I (3), the upper roller of the unpowered roller I (3) is pressed on the lower roller of the unpowered roller I (3), and the PE bag is clamped between the upper unpowered roller and the lower unpowered roller of the unpowered roller I.

4. A material savable tensioner as claimed in claim 1, wherein: a fourth unpowered roller (6) is fixedly arranged between the coiled PE bag placing frame (11) and the third unpowered roller (5).

5. A material savable tensioning device according to claim 1 or 2 or 3 or 4, wherein: the device is characterized by further comprising a connecting frame (7), the rear end of the connecting frame (7) is fixedly connected with the rack, and the lower end of the coiled PE bag placing frame (11) is fixedly connected with the front end of the connecting frame (7).

6. A economized tensioning device according to claim 1, 2, 3 or 4, characterized in that: the bottom of the frame (2) is provided with a height adjusting structure (10).