CN112549650A - Bag body internal folding device - Google Patents
Bag body internal folding device Download PDFInfo
- Publication number
- CN112549650A CN112549650A CN201910917324.4A CN201910917324A CN112549650A CN 112549650 A CN112549650 A CN 112549650A CN 201910917324 A CN201910917324 A CN 201910917324A CN 112549650 A CN112549650 A CN 112549650A
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- Prior art keywords
- bag opening
- bag
- plates
- pressing
- opening mechanism
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/003—Opening or distending bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/26—Folding sheets, blanks or webs
Abstract
The invention provides a bag body internal folding device, which comprises a bag opening mechanism, a first folding component and a second folding component; the bag opening mechanism comprises two bag opening plates which are arranged at intervals and can be opened and closed away from each other or towards each other; each bag opening plate is provided with at least one vacuum suction hole; the first folding component comprises two pressing pieces, the two pressing pieces are respectively pivoted with the two bag opening plates, and each pressing piece can rotate to the position between the two bag opening plates; the second folding component is positioned at one side of the bag opening mechanism and comprises two bag opening leaning rods; the bag opening abutting rods are arranged at intervals along the pivot axis of the abutting piece; the two bag opening leaning rods can rotate between the two bag opening plates and can rotate towards the direction away from each other; therefore, the bag opening of the flat semi-finished woven bag can be automatically opened and folded inwards, so that the time and labor cost for producing the bag body are saved.
Description
Technical Field
The invention relates to automatic bag body production equipment, in particular to a device for internally folding a bag opening of a plastic woven bag such as a rice bag or a feed bag and the like.
Background
The plastic woven bag is made of flat filaments made of plastic materials through warp and weft weaving, and is a light and durable packaging bag. In the production flow of the woven bag, cut flat filament burrs can be remained at the periphery of the bag opening of the semi-finished woven bag. In order to avoid exposing burrs of the bag mouth, the bag mouth of the flat semi-finished woven bag needs to be opened in the end section of the production flow in a manual operation mode by the existing woven bag, then the bag mouth periphery with the burrs is folded towards the inner part of the bag body, and finally the folding part is sewn and fixed manually, so that the finished bag mouth periphery of the woven bag has a smooth and flat appearance. However, it is time consuming to manually fold and sew the bag opening, which makes the production process of the existing woven bag time consuming and labor consuming.
Therefore, the production process of the woven bag in the prior art needs to be improved.
Disclosure of Invention
In view of the above-mentioned drawbacks and disadvantages of the prior art, the present invention provides a bag body inner folding device, which can automatically open the bag opening of a flat semi-finished woven bag and then fold the bag opening with a burr toward the inside of the bag body, thereby saving the time and labor cost for producing the woven bag.
In order to achieve the above-mentioned creation purpose, the present invention adopts a technical means of designing a bag body inner folding device, which comprises:
a bag opening mechanism having a bag opening direction and a bag opening direction, the bag opening mechanism comprising: two bag opening plates which are arranged at intervals along the bag opening direction; the two bag opening plates can move away from each other or towards each other to open and close; each of the bag opening plates has:
the abutting plane is positioned on one side of the bag opening plate facing to the other bag opening plate;
at least one vacuum suction hole formed on the contact plane;
the first folding component is positioned outside the bag opening mechanism and is arranged side by side with the bag opening mechanism in the bag opening direction; the first folding component comprises two pressing pieces, and each pressing piece can rotate to a position between the two abutting planes of the two bag opening plates from the outside of the bag opening mechanism;
the second folding component is positioned outside the bag opening mechanism, is parallel to the bag opening mechanism in the bag opening direction, and is positioned at the same side of the bag opening mechanism as the first folding component; the second folding component comprises two bag opening abutting rods which are arranged at intervals along a pivot axis parallel to the abutting piece; the two bag opening abutting rods can rotate to the position between the abutting planes of the two bag opening plates from the outside of the bag opening mechanism and can further rotate in the direction away from each other after rotating to the position between the abutting planes of the two bag opening plates.
The method comprises the following steps:
1. inserting the flat semi-finished woven bag between two bag opening plates of the bag opening mechanism along the bag opening direction, and enabling the periphery of the bag opening to protrude out of the reverse folding edge of the bag opening plate;
2. the two bag opening plates move towards each other to be closed; at the moment, the vacuum suction holes of the two bag opening plates respectively adsorb the two opposite sides of the semi-finished woven bag;
3. the two bag opening plates move towards the direction away from each other to open the bag openings of the semi-finished woven bags;
4. the two pressing pieces of the first folding component rotate towards the position between the two sticking planes of the bag opening plates so as to fold the bag body opening adsorbed at the bag opening plate inwards;
5. two bag openings of the second folding component abut against the rod and rotate to a position between the abutting planes of the two bag opening plates (namely, the bag opening rotates from the opened bag opening position to enter the bag body); the two bag openings are abutted against the rods and continue to rotate towards the direction far away from each other so as to outwards expand the periphery of the bag opening which is suspended between the two bag opening plates and complete the folding of the whole bag opening.
The bag opening mechanism has the advantages that the bag opening mechanism can automatically open the bag opening of the flat semi-finished woven bag, and then the first folding component and the second folding component can automatically fold the periphery of the bag opening with the burr towards the inside of the bag body, so that the time and labor cost required for producing the bag body are saved.
Further, the bag body inward folding device is characterized in that the number of the at least one vacuum suction hole of each bag opening plate is multiple, and the vacuum suction holes are arranged along the abutting plane and adjacent to the edge of the first folding component.
Further, the folding device in the bag body is characterized in that the positions of the at least one vacuum suction hole of the two bag opening plates correspond to each other.
Further, each of the pressing members is rotatable to the opening of the at least one vacuum suction hole of the corresponding bag opening plate.
Furthermore, the bag body internal folding device is further provided with an electric heating plate which is positioned outside the bag opening mechanism, is parallel to the bag opening mechanism in the bag opening direction and is positioned at the same side of the bag opening mechanism as the first folding component; the electric heating plate can move to the position between the abutting planes of the two bag opening plates.
Further, the bag body inner folding device is characterized in that the pressing piece is made of metal; when the two bag opening plates are closed, the electric heating plate and the two pressing pieces are positioned between the two abutting planes, and the two pressing pieces respectively abut against the two opposite side surfaces of the electric heating plate from top to bottom.
Further, the folding device in the bag body, wherein each of the pressing pieces comprises: an axle center which is rotatably arranged outside the bag opening mechanism; one end of each of the pressing rods is connected with the axis, and the other end of each of the pressing rods extends towards the radial direction of the axis; the mortgage rods are arranged at intervals along the length direction of the axis; viewed from the axial direction of the axis, the positions of the mortgage rods are the same; when the shaft center rotates, the pressing rod can rotate to a position between the two bag opening plates from the outside of the bag opening mechanism.
Drawings
Fig. 1 shows a pouch body without an inside gusset.
Fig. 2 to 5 are side view operation diagrams of some components of the present invention.
Fig. 6-7 are top views of the present invention, wherein the upper bag opening plate and the upper first flap assembly are not shown.
Fig. 8 to 9 are schematic side views of the present invention.
FIG. 10 shows a bag body which has been subjected to the inward folding and welding fixing treatment of the present invention.
Detailed Description
The technical means adopted by the invention to achieve the predetermined creation purpose is further described below by combining the accompanying drawings and the preferred embodiments of the invention.
Referring to fig. 2, 6 and 8, the bag body inward folding device of the present invention is used to fold the cut opening a1 of a flat plastic bag body a (as shown in fig. 1) and the folded portion a2 adjacent to the periphery of the cut opening a1 toward the inside of the bag body a, and in this embodiment, the folded portion a2 inward folded into the bag body a can be further welded and fixed to the inner wall surface of the bag body a (the state of welded and fixed by the folded portion a2 is shown in fig. 10), and the bag body a is preferably a plastic woven bag; the bag body internal folding device comprises a bag opening mechanism 10, a first folding component 20 and a second folding component 30; in the present embodiment, an electric heating plate 40 is further included.
The bag opening mechanism 10 can open the flat bag opening of the bag body a, and then the bag opening folding and bag opening welding fixing operations are sequentially performed on the bag body a through the first folding component 20, the second folding component 30 and the electric heating plate 40. The bag opening mechanism 10 has a bag opening direction P and a bag opening direction O; the bag opening direction P is defined as a moving direction in which the bag opening mechanism 10 pulls apart two opposite side walls of the flat bag body a; the bag opening direction O is defined as the direction of the bag opening of the bag body a when the bag body a is placed in the bag opening mechanism 10. The first folding component 20, the second folding component 30 and the electric heating plate 40 are all positioned outside the bag opening mechanism 10 and are arranged side by side with the bag opening mechanism 10 in the bag opening direction O; in other words, the first flap assembly 20, the second flap assembly 30 and the electric heating plate 40 are all located on one side of the bag opening mechanism 10 facing the bag opening direction O. In the present embodiment, the bag opening direction P and the bag opening direction O are perpendicular to each other.
The bag opening mechanism 10 includes two bag opening plates 11 disposed at intervals along the bag opening direction P, and the two bag opening plates 11 can be moved toward each other or away from each other to open and close. Each bag opening plate 11 has a flat surface 111 and a plurality of vacuum suction holes 112, the flat surface 111 is located on the side of the bag opening plate 11 facing the other bag opening plate 11, and the edge of the flat surface 111 adjacent to the first flap member 20 is defined as a reverse folding edge 113. The vacuum suction holes 112 are formed in the abutting plane 111, and in the present embodiment, the vacuum suction holes 112 are arranged along the inflected edge 113, but not limited thereto, the number of the vacuum suction holes 112 of each bag opening plate 11 may be only one, but the shape of the vacuum suction holes 112 is preferably a long hole extending along the inflected edge 113.
In the present embodiment, the positions of the vacuum suction holes 112 in the two bag opening plates 11 correspond to each other, that is, the positions of the vacuum suction holes 112 in the bag opening direction O in the two bag opening plates 11 are the same when viewed from the side (as shown in fig. 2), but the positions are not limited thereto and may be slightly shifted.
Referring to fig. 5, the first flap assembly 20 is located outside the bag opening mechanism 10; the first folding assembly 20 includes two pressing members 21, the two pressing members 21 are respectively pivoted on the outer side surfaces of the two bag opening plates 11 of the bag opening mechanism 10 facing the bag opening direction O, and each pressing member 21 can rotate from the outside of the bag opening mechanism 10 to a position between the contact planes 111 of the two bag opening plates 11, thereby folding the folding portion a2 of the bag body a toward the inside of the bag body a.
In the present embodiment, the pressing member 21 is pivoted to the bag opening plate 11, so that the pressing member 21 can move together with the bag opening plate 11, but not limited thereto, for example, in other preferred embodiments, two pressing members 21 can be disposed adjacent to the bag opening plate 11, but the height positions of two pressing members 21 are respectively aligned with the height positions of two bag opening plates 11 in the opened state, so that the first flap assembly 20 can also fold the folding portion a2 toward the bag body a after the bag opening plate 11 opens the bag opening.
Further, each pressing member 21 includes an axis 211 and a plurality of pressing rods 212; the axial centers 211 are rotatably disposed on the outer side surfaces of the bag opening plates 11 facing the bag opening direction O, the axial centers 211 of the two pressing members 21 are parallel to each other, and each axial center 211 is adjacent to the reverse folding edge 113 of the corresponding bag opening plate 11. One end of the pressing rod 212 is connected to the shaft center 211, and the other end extends in the radial direction of the shaft center 211. The pressing rods 212 are disposed at intervals in the longitudinal direction of the shaft center 211. The positions of the pressing rods 212 are the same when viewed from the axial direction of the shaft 211, that is, the pressing rods 212 are arranged on a plane along the length direction of the shaft 211. When the shaft center 211 rotates, the pressing rod 212 can rotate from the bag opening mechanism 10 to between the abutting planes 111 of the two bag opening plates 11, so as to clamp and fix the folded part a2 between the pressing rod 212 and the abutting planes 111; however, the shape and structure of the pressing member 21 are not limited to this, and for example, each pressing member 21 may be a plate body pivoted to the bag opening plate 11, so that one side surface of the pressing member 21 can also clamp the fixed folding portion a2 together with the abutting plane 111.
Referring to fig. 7, the second flap element 30 is located outside the bag opening mechanism 10, and is arranged side by side with the bag opening mechanism 10 in the bag opening direction O, and is located at the same side of the bag opening mechanism 10 as the first flap element 20. The second flap assembly 30 comprises two pocket abutment levers 31 spaced along the pivot axis of the parallel abutment 21; the two bag opening abutting rods 31 can move outwards from the bag opening mechanism 10 to the position between the abutting planes 111 of the two bag opening plates 11 so as to rotate into the bag body A. After the two bag mouth abutting rods 31 are rotated to the position between the abutting planes 111, the two bag mouth abutting rods can be continuously rotated in the direction away from each other so as to stretch the bag body a left and right, and further the folding parts a2 on the left and right sides of the bag body a abut against the inner wall surface of the bag body a, so that when the later-described electric heating plate 40 performs welding and fixing on the folding part a2, the folding part a2 and the inner wall surface of the bag body a can be kept flat without overlapping or wrinkling.
Referring to fig. 9, the electric heating plate 40 is located outside the bag opening mechanism 10, and is parallel to the bag opening mechanism 10 in the bag opening direction O, and is located at the same side of the bag opening mechanism 10 as the first flap assembly 20. The electric heating plate 40 is movable between the abutting planes 111 of the bag opening plates 11, so that when the bag opening plates 11 are closed, the electric heating plate 40 heats the folded part a2 of the bag body a to weld and fix the folded part a2 to the inner wall surface of the bag body a.
In this embodiment, the pressing member 21 is made of metal, and when the two bag opening plates 11 are closed, the electric heating plate 40 and the pressing rods 212 of the two pressing members 21 are located between the contact planes 111, and the two pressing rods 212 respectively contact the two opposite side surfaces of the electric heating plate 40 up and down; therefore, when the electric heating plate 40 heats the folding portion a2, the heat energy of the electric heating plate 40 can be conducted to the folding portion a2 through the pressing rod 212, so that the folding portion a2 is welded and fixed on the inner wall surface of the bag body a, that is, when the electric heating plate 40 heats the folding portion a2, the pressing rod 212 can continuously clamp and fix the folding portion a2 on the pressing member 21 and the contact plane 111 of the bag opening plate 11, and the heat energy of the electric heating plate 40 can be concentrated at the pressing rod 212, so that the welding quality is more stable.
In addition, in the embodiment, when each pressing rod 212 rotates to a position between the abutting planes 111 of the two bag opening plates 11, the pressing rod 212 is located at the opening of the corresponding vacuum suction hole 112 of the bag opening plate 11, so that after the welding and fixing are completed, the air flow of the vacuum suction hole 112 can cool the welding position, the waiting time for cooling is shortened, and the yield is improved.
The production steps of the invention are as follows:
1. feeding: referring to fig. 2, the flat semi-finished bag body a is inserted between the two bag opening plates 11 of the bag opening mechanism 10 along the bag opening direction O, and the cut opening a1 of the bag body a protrudes from the reverse folding edge 113 of the bag opening plate 11, and the folding portion a2 is located between the two pressing members 21.
2. Vacuum suction: referring to fig. 3, the two bag opening plates 11 are moved toward each other to close, and the vacuum suction holes 112 of the two bag opening plates 11 respectively suck the two opposite side walls of the bag body a, so that the two opposite side walls of the bag body a are respectively attached to the attaching planes 111 of the two bag opening plates 11.
3. Opening the bag: referring to fig. 4, the two bag opening plates 11 move away from each other to open, so that the cut opening a1 of the bag a opens up and down.
4. Folding the top edge and the bottom edge inwards: referring to fig. 5 and fig. 6, the two pressing components 21 of the first flap assembly 20 rotate towards the position between the two contact planes 111 of the bag opening plates 11, and the pressing rod 212 of the pressing component 21 drives the folding portion a2 to fold back towards the interior of the bag body a and contact the inner wall surface of the bag body a; the cutting opening a1 with the burr is hidden in the bag body a, and the folding part a2 is located between the bag opening plate 11 and the pressing rod 212.
5. Folding the side edge inwards: referring to fig. 7 and 8, the two bag mouth abutting rods 31 of the second folding assembly 30 rotate towards the bag body a and rotate to a position between the two abutting planes 111 (i.e. the bag mouth abutting rods 31 rotate from the opened bag mouth into the bag body a); the two bag mouth abutting rods 31 continue to rotate in the direction away from each other, so as to expand the periphery of the bag mouth suspended between the two bag opening plates 11 outwards, and the whole circle of the folding part A2 can be folded towards the bag body A.
6. Welding and fixing: referring to fig. 9, the electric heating plate 40 moves toward the opening of the bag body a and is inserted into the bag body a, and then the two bag opening plates 11 move toward each other and close, so that the two bag opening plates 11 are respectively pressed against the electric heating plate 40 through the two pressing rods 212; the heat energy of the electric heating plate 40 is conducted to the folding part A2 through the pressing rod 212, so that the folding part A2 is welded and fixed on the inner wall surface of the bag body A; when the material of the bag body A is not easy to be welded or the bag body A cannot be fixed in a heating welding mode due to other reasons, the step can be changed into manual sewing.
In summary, the bag opening mechanism of the present invention can automatically open the bag opening of the flat semi-finished woven bag, and then the first folding assembly and the second folding assembly can automatically fold the bag opening with the burr toward the inside of the bag body, thereby saving the time and labor cost required for producing the bag body.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. An in-bag flap apparatus, comprising:
a bag opening mechanism having a bag opening direction and a bag opening direction, the bag opening mechanism comprising: two bag opening plates which are arranged at intervals along the bag opening direction; the two bag opening plates can move away from each other or towards each other to open and close; each of the bag opening plates has:
the abutting plane is positioned on one side of the bag opening plate facing to the other bag opening plate;
at least one vacuum suction hole formed on the contact plane;
the first folding component is positioned outside the bag opening mechanism and is arranged side by side with the bag opening mechanism in the bag opening direction; the first folding component comprises two pressing pieces, and each pressing piece can rotate to a position between the two abutting planes of the two bag opening plates from the outside of the bag opening mechanism;
the second folding component is positioned outside the bag opening mechanism, is parallel to the bag opening mechanism in the bag opening direction, and is positioned at the same side of the bag opening mechanism as the first folding component; the second folding component comprises two bag opening abutting rods which are arranged at intervals along a pivot axis parallel to the abutting piece; the two bag opening abutting rods can rotate to the position between the abutting planes of the two bag opening plates from the outside of the bag opening mechanism and can further rotate in the direction away from each other after rotating to the position between the abutting planes of the two bag opening plates.
2. The in-bag creasing device of claim 1, wherein each of the opening plates has a plurality of the at least one vacuum suction aperture arranged along the seating plane adjacent to the edge of the first creasing assembly.
3. The in-bag flap device according to claim 1, wherein the at least one vacuum suction hole of the two bag opening plates is located in correspondence with each other.
4. The bag body inward folding device according to any one of claims 1 to 3, wherein each of the pressing pieces is capable of rotating to the opening of the at least one vacuum suction hole of the corresponding bag opening plate.
5. The bag body inward folding device according to any one of claims 1 to 3, further comprising an electric heating plate located outside the bag opening mechanism and side by side with the bag opening mechanism in the bag opening direction, and located on the same side of the bag opening mechanism as the first folding member; the electric heating plate can move to the position between the abutting planes of the two bag opening plates.
6. The in-bag flap device according to claim 5,
the pressing piece is made of metal;
when the two bag opening plates are closed, the electric heating plate and the two pressing pieces are positioned between the two abutting planes, and the two pressing pieces respectively abut against the two opposite side surfaces of the electric heating plate from top to bottom.
7. The bag body internal folding device according to any one of claims 1 to 3, wherein each of the pressing members comprises:
an axle center which is rotatably arranged outside the bag opening mechanism;
one end of each of the pressing rods is connected with the axis, and the other end of each of the pressing rods extends towards the radial direction of the axis; the mortgage rods are arranged at intervals along the length direction of the axis; viewed from the axial direction of the axis, the positions of the mortgage rods are the same;
when the axis rotates, the pressing rod can rotate to a position between the two bag opening plates from the outside of the bag opening mechanism.
8. The bag body internal folding device according to claim 6, wherein each of the pressing members comprises:
an axle center which is rotatably arranged outside the bag opening mechanism;
one end of each of the pressing rods is connected with the axis, and the other end of each of the pressing rods extends towards the radial direction of the axis; the mortgage rods are arranged at intervals along the length direction of the axis; viewed from the axial direction of the axis, the positions of the mortgage rods are the same;
when the axis rotates, the pressing rod can rotate to a position between the two bag opening plates from the outside of the bag opening mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917324.4A CN112549650A (en) | 2019-09-26 | 2019-09-26 | Bag body internal folding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910917324.4A CN112549650A (en) | 2019-09-26 | 2019-09-26 | Bag body internal folding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112549650A true CN112549650A (en) | 2021-03-26 |
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ID=75030064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910917324.4A Pending CN112549650A (en) | 2019-09-26 | 2019-09-26 | Bag body internal folding device |
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| Country | Link |
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| CN (1) | CN112549650A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113211873A (en) * | 2021-05-21 | 2021-08-06 | 广东嘉煜机械科技有限公司 | Inner bag and outer bag bonding mechanism of double-layer bag and inner bag and outer bag bonding method of double-layer bag |
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| CN211518677U (en) * | 2019-09-26 | 2020-09-18 | 陈坚承 | Bag body internal folding device |
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| CN1162293A (en) * | 1994-09-30 | 1997-10-15 | 阿蒂方有限公司 | Container having rectangular base and its manufacturing |
| CN102015276A (en) * | 2008-03-11 | 2011-04-13 | 福瑞托-雷北美有限公司 | Improved method and apparatus for making a flat bottom pillow pouch |
| JP2013000983A (en) * | 2011-06-16 | 2013-01-07 | Fasutemu Engineering Kk | Gusset-like sheet opening apparatus, and bag laying apparatus having the same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113211873A (en) * | 2021-05-21 | 2021-08-06 | 广东嘉煜机械科技有限公司 | Inner bag and outer bag bonding mechanism of double-layer bag and inner bag and outer bag bonding method of double-layer bag |
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