CN103240917B - Hot-gas welding press fit device for valve strips or bag bottom covering sheets of block bottom valve bags - Google Patents
Hot-gas welding press fit device for valve strips or bag bottom covering sheets of block bottom valve bags Download PDFInfo
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- CN103240917B CN103240917B CN201310181324.5A CN201310181324A CN103240917B CN 103240917 B CN103240917 B CN 103240917B CN 201310181324 A CN201310181324 A CN 201310181324A CN 103240917 B CN103240917 B CN 103240917B
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Abstract
The invention provides a hot-gas welding press fit device suitable for valve strips or bag bottom covering sheets of woven plastic block bottom valve bags. The hot-gas welding press fit device is low in pressure and capable of achieving short stroke clutching. The hot-gas welding press fit device comprises a lower press fit roller corresponding to a negative-pressure transferring roller, a gap formed between the lower press fit roller and the negative-pressure transferring roller corresponds to a gap set on a rack flat pallet, the tangent of the lower press fit roller and the rack flat pallet are on the same horizontal line, and cylindrical bag sheets and valve strips or covering sheets pass through the gap; and the lower press fit roller implements clutch pressing actions with the negative-pressure transferring roller through a pair of four-bar mechanisms with cylinders serving as executive components.
Description
Technical field
The present invention relates to package packing machine, for the press fit device of emulsion sheet hot air welding at the bottom of bag in the Bag Making Machine of the especially side's of relating to bottom valve pocket.
Background technology
Adopt the square bottom valve pocket that plastics composite braided cylinder cloth makes, its making step as shown in Figure 1, first, is opened cylindrical sheet material two ends, be folded into hexagon.In hexagon, symmetrical Delta Region is referred to as " cornerite " or " angle flap ", and laterally zygomorphic rectangle part in hexagon is referred to as " the cross break wing "; The cut-off rule of hexagon intermediate rectangular part is referred to as " at the bottom of bag folding center line ".Secondly, in one end of tubular, need to paste valve port bar; Then, the two cross break wings respectively along folding center line, in opposite directions cross folding at the bottom of bag, and overlap a little, are formed at the bottom of rectangular bag; Finally, at the bottom of bag, paste rectangle emulsion sheet, at the bottom of closing bag or sack.
In the background technology of German patent DE 3236770 " valve bag ", disclose polypropylene film narrow fabrics bonding last layer sealant, after adopting Corona Surface Treatment, the method can welded by hot melt coatings, emulsion sheet at the bottom of bonding pack valve port bar and bag, so that reliably at the bottom of sealing bag.
" the packing technique handbook " write nineteen eighty-three by Japanese Packaging Technology Association of China Machine Press of China translation issuing, disclose plastic sheeting side's bottom valve pocket machine that Hull Baker Co., Ltd produces, use the AD Bag Making Machine of adhesive different with Germany temperature Weidmulie, the bag technique that have employed heat-sealing welding pastes covering reinforced sheet at the bottom of valve port and bag.Its hot sealing process should be specifically hot plate welding; The composite plastic woven cloth with face coat is exactly a kind of multi-layer compound film material.
The PCT patent WO95/30598 of Starlinger company, Chinese patent CN10771258C of the same clan " polymer, especially polyolefine fabric bag and manufacture method " disclose and a kind of adopt hot air, namely the method that hot air welding is used at the bottom of square bottom valve pocket bag and emulsion sheet overlaps, adopt pair roller pressing, but do not relate to concrete welding press device.
Invention people is that the US Patent No. 3951050 " cylinder bag forming technique " of E.I.Du Pont Company more early discloses employing hot air welding, makes the device of plastic weaving tube bag continuously.Its welding press device comprises: a pair diameter is the folder rod of 4 inches, and lower compression roller is resistant to elevated temperatures silica gel roller, and upper pressure roller is the steel rider of the surface knurling process of cylinder pushing, and two roller peripheral pressures are minimum is 20 pounds/square inch; At least one heat gun, nozzle, with the angle of 15 degree, aims at the crack formed by composite plastic woven sheet cloth cross folding region and sealing strip.Technological means disclosed by above-mentioned patent; details is very detailed; with in Chinese patent CN10771258C invention required for protection at the bottom of solution party's bottom valve pocket valve port bar and bag the technical problem role of emulsion sheet welding be identical, and belong to same technical field.
Hot air welding is the known technology of this area, and above-mentioned technological means is widely used in the overlap joint of this area composite plastic woven tarpaulin, and welding press generally adopts the mode of pair roller pressing to carry out.
Hot air welding pressing disclosed in US Patent No. 3951050 " cylinder bag forming technique " is that one is worked continuously mode.German patent DE 19502255.6 " device on workpiece plastic paper strip seal being overlayed plane placement " then provides a kind of device that can be used for emulsion sheet welding at the bottom of valve bag bag of clearance-type operating type, by installing a control valve before hot air gun nozzle, to coordinate coiled material feed mechanism common in package packing machine, comprise the welding press device of hobboing cutter cutting, negative pressure roller absorption transmission, pair roller pressing.
The stickup of emulsion sheet at the bottom of the valve port bar of side's bottom valve pocket, bag, its technological requirement and coiled material location labeling similar, the location labeling of packaging bag can be regarded as.Can the prior art of reference as association area, adopt clearance-type to carry as US Patent No. 4724029 " flexiplast label is to the method and apparatus on bulge " and above-mentioned German patent DE 19502255.6 and the technological means of hot air welding is close.What be different from general plastic label hot blast barbola work is, moulding emulsion sheet at the bottom of the bag of volume side's bottom valve pocket with the welding at the bottom of bag be folded into is that a large-area location is pasted, as shown in Figure 1, its cover strip width is between 80 ~ 180 millimeters, length, between 230 ~ 480 millimeters, is pasted onto localized area; What be also different from general plastic label hot blast barbola work is, mould emulsion sheet at the bottom of the valve port bar of volume side's bottom valve pocket, bag and the welding at the bottom of bag that is folded into is that the pressing that a kind of multilayer material carries out simultaneously is pasted, while requiring that pinch roller pair linear resonance surface velocity is consistent, the deformation factor of being heated around thermoplastic plastic substrates welding region must be considered; After welding valve port bar, regional area polymer molecule disorientation at the bottom of bag, base cloth local produces contraction, and when bag webs travels forward, bag face easily produces wrinkle; This also just means, after valve port sheet has welded, press bonding roller needs to discharge in time, the transmission of other non-welding regions at the bottom of can not affecting bag.
In addition, owing to being folding and be shaped at the bottom of bag, cause the welding region number of plies, thickness distribution uneven.Flap place, valve port angle is 7 layers, and the cross break pterion part of sack inside bag reaches 4 layers, and the cross break pterion in outside is 2 layers, and the mutual lap-joint of the cross break wing is 5 layers, and calculate according to the base materials of 80 grams/m, thickness difference reaches 0.50 millimeter; The elastic modelling quantity of pressing roll surfaces is relatively uniform, as applied excessive pressure, the folding line of inner side horizontal flank upset place can be caused excessively dark, cause the loss of the warp tensile strength of bag base cloth; Fold trace relative to horizontal flank outside at the bottom of bag, inside sack, the cross break wing becomes the stress concentration point of sack.The existence of tension test and filling fall-down test susceptible of proof the problems referred to above.And above-mentioned prior art does not all provide effective solution.
Summary of the invention
The technical problem that will solve required for the present invention is: provide a kind of little pressure, can short stroke clutch, be suitable for moulding the welding press device that emulsion sheet at the bottom of volume side's bottom valve pocket valve port bar and bag adopts hot air welding method, avoid the folding line of horizontal flank upset place inside bag face fold or bag cross dark and affect bag quality.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of welding press device for emulsion sheet hot air welding at the bottom of square bottom valve pocket valve port bar or bag, and this device comprises:
One is arranged on the cylinder bag webs conveying device on the landing slab of frame;
Be arranged on above landing slab, vertical with the cylinder bag webs direction of motion, the coiled material feeder that pole bracket formula is fixing;
Described coiled material feeder comprises a pair conveying nip rolls, the cutter sweep of upper and lower rotation hobboing cutter composition, and negative pressure transferring roller;
The lower press bonding roller that one and negative pressure transferring roller correspondence are arranged, negative pressure transferring roller and lower press bonding roller are driven by pitch wheel respectively and keep roller linear resonance surface velocity consistent, and cylinder bag webs and valve port bar or emulsion sheet pass through between negative pressure transferring roller and lower press bonding roller;
The nozzle of a heat gun presses certain angle, facing to the V-shaped part that negative pressure transferring roller and lower press bonding roller are formed;
It is characterized in that: form gap between described lower press bonding roller and negative pressure transferring roller, this gap corresponds in gap set on landing slab, and with landing slab level;
Lower press bonding roller is by being for a pair that the quadric chain of executive component and negative pressure transferring roller realize clutch pressing action with cylinder;
Described quadric chain comprises cylinder, clutch pendulum plate, connecting rod and eccentric bushing, and described eccentric bushing is arranged on the rotatable axle of lower press bonding roller, and is connected with frame by eccentric bushing positioning rotating shaft; Described clutch pendulum one end of plate and the piston rod of cylinder are rotationally connected, and the other end is connected with frame by clutch pendulum plate positioning rotating shaft; Meanwhile, described connecting rod is put plate with eccentric bushing and clutch respectively and is rotationally connected.
Described connecting rod comprises the left connecting rod and right connecting rod that respectively with one left-right rotary threaded adjusting screw rod is connected, and rotates left-right rotary threaded adjusting screw rod, the entire length of adjustable link, thus the gap between adjustment negative pressure transferring roller and lower press bonding roller.
The present invention is by arranging a quadric chain, achieve little stroke clutch pressing quick, instant between lower press bonding roller and negative pressure transferring roller easily, solve the folding line that positioning welding completes horizontal flank upset place inside wrinkling, the sack of back bag piece conveying and cross the problems such as dark, ensure that the quality of finished bag.
Accompanying drawing explanation
Fig. 1 is that schematic diagram is pasted in the location of emulsion sheet at the bottom of the square bottom valve pocket valve port bar and bag that the present invention relates to;
Fig. 2 is the structural representation of apparatus of the present invention.
In figure: 1. coiled material; 2. carry nip rolls; 3. go up hobboing cutter; 4. play hobboing cutter; 5. negative pressure transferring roller; 6. descend press bonding roller; 7. driven wheel I; 8. driven wheel II; 9. a bag webs; 10. eccentric bushing; 11. left connecting rods; 12. left-right rotary threaded adjusting screw rods; 13. clutch pendulum plates; 14. cylinders; 15. cylinder piston connecting rods; 16. right connecting rods; 17. eccentric bushing positioning rotating shafts; 18. clutch pendulum plate positioning rotating shafts; 19. heat guns; 20. landing slabs.
Detailed description of the invention
As shown in Figure 2, conveying device (not shown in FIG.) beat-type transport tube bag webs 9 on the landing slab 20 of frame (not shown in FIG.);
Be arranged on above landing slab 20, vertical with the direction of motion of cylinder bag webs 9, pole bracket formula fixes a coiled material feeder; This coiled material feeder comprises a pair conveying nip rolls 2, and the cutter sweep of upper rotation hobboing cutter 3 and backspin tumbler cutter 4 composition;
Secondly, welding press device is formed by negative pressure transferring roller 5 and lower press bonding roller 6, be arranged in gap set on landing slab 20, tangent line and the landing slab 20 of its corresponding gap location are roughly in same level line, and at the bottom of the valve port bar that cylinder bag webs 9 and coiled material 1 cut into or bag, emulsion sheet passes through from this gap location;
Negative pressure transferring roller 5 and lower press bonding roller 6 are driven by driven wheel I 7 and driven wheel II 8 respectively, and keep negative pressure transferring roller 5 consistent with the roller surface linear velocity of lower press bonding roller 6;
The nozzle of heat gun 19 presses certain angle, facing to the V-shaped part that negative pressure transferring roller 5 and lower press bonding roller 6 are formed;
Lower press bonding roller 6 realizes clutch pressure action by a pair with cylinder 14 quadric chain that is executive component and negative pressure transferring roller 5;
Above-mentioned quadric chain is symmetrical arranged at the both ends of lower press bonding roller 6, and it comprises cylinder 14, clutch pendulum plate 13, left-right rotary threaded adjusting screw rod 12, left connecting rod 11, right connecting rod 16, and is arranged on the eccentric bushing 10 on lower press bonding roller 6 axle; In this quadric chain: eccentric bushing 10 is arranged on the rotatable axle of lower press bonding roller 6, and be connected with gantry rotation by eccentric bushing positioning rotating shaft 17, bottom and the left connecting rod 11 of eccentric bushing 10 are rotationally connected;
Clutch pendulum plate 13 is roughly triangular in shape, and the cylinder piston connecting rod 15 of its first end and cylinder 4 is rotationally connected, and the second end is connected with gantry rotation by clutch pendulum plate positioning rotating shaft 18, and the 3rd end and right connecting rod 16 are rotationally connected;
Meanwhile, left connecting rod 11 and right connecting rod 16 are threaded with left-right rotary threaded adjusting screw rod 12 respectively, make whole length of connecting rod adjustable;
Above-mentioned pneumatic double leval jib clutch pressure mechanism, can realize moment clutch pressing action: when cylinder piston rod 15 stretches out, lower press bonding roller 6 moves to negative pressure transferring roller 5, realizes pressing; When cylinder piston rod 15 is retracted, namely realize the tripping of above-mentioned two rollers, thus solve after emulsion sheet positioning welding completes, wrinkling problem carried by bag webs base cloth, ensure that the presentation quality of finished bag.
Above-mentioned double leval jib clutch pressure mechanism, under the condition that cylinder piston stroke is constant, by left-right rotary threaded adjusting screw rod 12, adjust the length of wherein adjustable-length connecting rod, do not affecting the engagement of driven wheel of welding press pair roller, under not changing the prerequisite of welding cylinder bag webs line synchro speed, can adjust respectively the gap at the two ends between negative pressure transferring roller 5 and lower press bonding roller 6, the folding line avoiding horizontal flank upset place inside sack is excessively dark, and the hidden danger of quality of the side's of causing bottom valve pocket.
Claims (2)
1., for a welding press device for emulsion sheet hot air welding at the bottom of square bottom valve pocket valve port bar or bag, this device comprises:
One is arranged on the cylinder bag webs conveying device on framework platform;
Be arranged on above framework platform, vertical with the cylinder bag webs direction of motion, the coiled material feeder that pole bracket formula is fixing;
Described coiled material feeder comprises a pair conveying nip rolls, the cutter sweep of upper and lower rotation hobboing cutter composition, and negative pressure transferring roller;
The lower press bonding roller that one and negative pressure transferring roller correspondence are arranged, negative pressure transferring roller and lower press bonding roller are driven by pitch wheel respectively and keep roller linear resonance surface velocity consistent, and cylinder bag webs and valve port bar or emulsion sheet pass through between negative pressure transferring roller and lower press bonding roller; The nozzle of a heat gun presses certain angle, facing to the V-shaped part that negative pressure transferring roller and lower press bonding roller are formed;
It is characterized in that: form gap between described lower press bonding roller and negative pressure transferring roller, this gap corresponds in gap set on framework platform plate, and with framework platform plate level;
Lower press bonding roller is by being for a pair that the quadric chain of executive component and negative pressure transferring roller realize clutch pressing action with cylinder;
Described quadric chain comprises cylinder, clutch pendulum plate, connecting rod and eccentric bushing, and described eccentric bushing is arranged on the rotatable axle of lower press bonding roller, and is connected with frame by eccentric bushing positioning rotating shaft; Described clutch pendulum one end of plate and the piston rod of cylinder are rotationally connected, and the other end is connected with frame by clutch pendulum plate positioning rotating shaft; Meanwhile, described connecting rod is put plate with eccentric bushing and clutch respectively and is rotationally connected.
2. welding press device according to claim 1, is characterized in that: described connecting rod comprises the left connecting rod and right connecting rod that respectively with one left-right rotary threaded adjusting screw rod is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310181324.5A CN103240917B (en) | 2013-05-15 | 2013-05-15 | Hot-gas welding press fit device for valve strips or bag bottom covering sheets of block bottom valve bags |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310181324.5A CN103240917B (en) | 2013-05-15 | 2013-05-15 | Hot-gas welding press fit device for valve strips or bag bottom covering sheets of block bottom valve bags |
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| Publication Number | Publication Date |
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| CN103240917A CN103240917A (en) | 2013-08-14 |
| CN103240917B true CN103240917B (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310181324.5A Active CN103240917B (en) | 2013-05-15 | 2013-05-15 | Hot-gas welding press fit device for valve strips or bag bottom covering sheets of block bottom valve bags |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018073285A1 (en) * | 2016-10-18 | 2018-04-26 | Windmöller & Hölscher Kg | Apparatus and method for producing bags from plastics material |
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| CN106364969A (en) * | 2016-08-26 | 2017-02-01 | 芜湖悠派护理用品科技股份有限公司 | Folding mechanism for pet urinal pad |
| CN106976615B (en) * | 2017-04-27 | 2018-11-16 | 重庆新派新智能科技有限公司 | The device of keyboard case fitting nameplate |
| CN109483894B (en) * | 2018-09-25 | 2021-01-26 | 岳阳东方雨虹防水技术有限责任公司 | Welding device and welding method for back-hanging welding rope of waterproof coiled material |
| CN109624413B (en) * | 2019-01-31 | 2023-12-22 | 惠州市恺易宸包装材料有限公司 | Roller hot-pressing type air bag making machine |
| CN109849434B (en) * | 2019-01-31 | 2023-12-22 | 惠州市恺易宸包装材料有限公司 | Realize hot pressing rolling mechanism of continuous preparation pneumatic bag line |
| CN113290943B (en) * | 2021-05-12 | 2022-12-16 | 珠海市鼎胜胶粘塑料环保科技有限公司 | Equipment and process for sticking plastic seal of degradable plastic self-sealing bag |
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| ATA17172001A (en) * | 2000-12-12 | 2005-05-15 | Windmoeller & Hoelscher | METHOD FOR TEMPERATING PLASTIC FOILS TO BE GLUED AND DEVICE FOR BONDING PLASTIC FOIL WITH TEMPERATURE CONTROLLED TRANSPORT BEAM |
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| US3951050A (en) * | 1973-12-13 | 1976-04-20 | Du Pont Of Canada, Ltd. | Tube forming process |
| US5804029A (en) * | 1995-01-25 | 1998-09-08 | lscher Ho | Apparatus for attaching leaves of plastic film material to laid flat workpieces |
| CN2547504Y (en) * | 2002-05-14 | 2003-04-30 | 李树模 | Four connecting rod pneuamtic press |
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| WO2018073285A1 (en) * | 2016-10-18 | 2018-04-26 | Windmöller & Hölscher Kg | Apparatus and method for producing bags from plastics material |
| AT16655U1 (en) * | 2016-10-18 | 2020-04-15 | Windmoeller & Hoelscher | Device and method for producing sacks from plastic material |
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| CN103240917A (en) | 2013-08-14 |
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Effective date of registration: 20210527 Address after: Room 501, office building, Langchuan Avenue, Jianping Town, Langxi County, Xuancheng City, Anhui Province Patentee after: Langxi pinxu Technology Development Co.,Ltd. Address before: 213115 Sanhekou Industrial Development Zone, Zhenglu Town, Wujin District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU HENGCHENG PLASTIC MACHINERY Co.,Ltd. |
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Effective date of registration: 20220927 Address after: 456150 New Material Industrial Park, Guxian Township, Tangyin County, Anyang City, Henan Province (800 meters north of the intersection of West Outer Ring Road and Renmin Road) Patentee after: Tangyin Xinhe Packaging Materials Co.,Ltd. Address before: Room 501, office building, Langchuan Avenue, Jianping Town, Langxi County, Xuancheng City, Anhui Province Patentee before: Langxi pinxu Technology Development Co.,Ltd. |
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