• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An apparatus for opening and folding the end of a flattened tubular sheet to define the rectangular base of a bag or sack to be made from the sheet comprises a table having a slot through which the flattened sheet projects, the projection being formed into a bag base by suckers locating the projection in a pre-opened condition and grippers which engage opposed margins of the projection, one of the grippers being fixed and the other being secured to a pivotable arm.
    公开号:SU1066458A3
    申请号:SU802949066
    申请日:1980-07-21
    公开日:1984-01-07
    发明作者:Ахельполь Фритц；Декер Вернер
    申请人:Виндмеллер Унд Хельшер (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to a device for stretching arm lengths to form a square bottom in the manufacture of bags. A device for stretching a piece of sleeve for forming a square bottom during the manufacture of bags, comprising, mounted on a frame, opening suction cups, cutters on the shafts mounted on the shafts for gripping opposite edges of the sleeve, mounted on the shafts of the folds, spreads of the bottom folds and driving is known. Gray Fir SI. The disadvantage of the known device is the low quality when making large bags. The purpose of the invention is to increase the size of the bag to make large bags. The goal is achieved by the device for stretching the sleeve to form a square bottom in the manufacture of bags, which are mounted on the frame, opening the end. from the side of the hose. The suction devices, mounted on the shafts, grabs for gripping the opposite edges of the sleeve section, mounted on the shafts of the bottom fold fold and driving the grippers, There is also a table with a slot in the middle for entering the sleeve segment, a swivel lever with a rotational drive of more than 180 ° between the opposite sides of the table, endless chain transmissions mounted under the table, and attached to the chain clamps to form. one. at the same time, the suckers are placed on one side of the table, one of the shafts of the grabs and the shafts of the spreaders are fixed on the frame, and the other of the grays are mounted on the rotary lever in the center of the sleeve segment. In this case, one expander in relation to the other is an angle of 9 o. The drive of the grabs includes toothed bevel gears, the gears of which are mounted on the shafts of the grabs and expanders, a lever; mounted on the shaft of the grapple mounted on the frame, and the cylinder connected to the lever, while the grapple is freely mounted on the shaft and connected to it by means of a torsion spring. In addition, the torsion spring is attached to the grapple shaft via an axle ring. On the grab and its shaft, stops are fixed to interact with each other. Clamp guides are located under the table. Suckers are located on both sides of the expanders. FIG. 1 shows the device, a general view; in fig. 2 - the same plan view; in fig. 3 shows a section A-A in FIG. in fig. 4 .- grabs and chains, side view. The device has a table 1 with a slit 2 in the middle for entering the length of the sleeve 3. The length of the sleeve 3 is moved in the chain 2 by means of endless chain gears 4 mounted under the table 1. On the frame there are suction cups 6 and 7 opening the end 5 of the length of the segment 3 and grab 8 which captures the lower edge of the opening of the length of sleeve 3. The upper edge of the length of sleeve 3 is gripped by the grapple 9 ,. mounted on a rotary around the axis 10 lever 11 with a drive to turn it more than 180 between the opposite sides of the table. On the frame on the shafts are mounted nodes 12 and 13 of the expanders of the skla, the dock bottom. The reamer assembly 12 consists of a frame 14, the lateral guide rods 15 and 16 of which are longitudinally displaced in the guide bushes 17 and 18. The bushes 17 and 18 are fixed to the holder 19 of the lever 11. The guide rods 15 and 16 are connected by a holder 20 with J- shaped insert 21. Between the shoulders 22 and 23 of the insert 21, the shaft 24 of the grab 9 is mounted. The partition 25 of the insert 21 for the grapple 9 forms a sponge. On the shaft 24 of the grapple 9 mounted lever 26 and fixed gears 27 and 28 of the drive grabs. The gears 27 and 28 are engaged with the toothed bevel gear 29, 30, the shafts 31 and 32 of which are loosely mounted in the partition 33 of the lever 26. On the shafts 31 and 32, the clamping elements 34 and 35c are fixed with clamping screws 36 and 37, which are designed levers, and carrying the guides 38 and 39 for the pins 40 and 41 at the free ends. The pins 40 and 41 at their front ends are connected to the expander. 42 and 43, the outer edges 44 and 45 of which are relative to each other. The angle is 9 ° T. In the initial position, the edges 44 and 45 are parallel to each other. On the shaft 24 of the grapple 9, a lever 46 is fixed, on the free end of which a pneumatic cylinder 47 is pivotally mounted, the free end of which is pivotally connected to the holder 48 of the frame 14.. The grab 9 is rigidly connected to the torsion spring 49, free
    the end of which is fixed on the clamping ring 50.
    Node 13 extenders similar to node 12.
    After the suction cups 6 and 7 slightly open the edges of the opening of the length of sleeve 3, the grapple 9 and the expanders 42 and 43 first lift up above the partition wall 25, which is under the edge of the opening. As soon as the shaft 24 of the grapple 9 is rotated by means of the pneumatic cylinder 47, the expanders 42 and 43 are simultaneously rotated, which are gripped by the lever 26 in the plane of the walls of the length of sleeve 3 that coincides with the slightly open edge of the hole. ..
    Since the lever 26 can no longer rotate after rotation, the gripping force of the grapple increases as the gripper shaft 24 rotates, as the torsion springs 49 of the surface are larger. At the same time, the bevel gear 29, 30 comes into rotation and the clamping members 34 and 35 are rotated, the expanders 42 and 43 are rotated to their folded position.
    On the grapple 9 and its shaft 24, stops 51 and 52 are fixed to interact with one another.
    The pins 40 and 41 are covered by the charged springs 53 and 54, which are tucked between the guide pins 38 and 39 and the heads 55 and 56 mounted on the ends of the pins.
    On the holder 48 of the frame 14 is fixed pneumatic cylinder 57, the piston rod of which is carried by the holder 58, the ends
    the latter, when extending the piston rod, contact with the heads 55 and 56 and move the pins 40 and 41 against the action of the springs 53 and 54 in the direction towards the chain 2 of the table 1,
    On the side arms of the lever 11, traction springs 59 and 60 are fixed, the free ends of which are connected to the cables 61 and 62, the latter passing through the rollers 63 and 64 and hanging from the rims 65 and 66. By means of the springs 59 and 60, the frame 14 during tipping the lever 11 is under tension, so that part of the length of the sleeve 3 is tightly tensioned during its formation.
    How. only the bottom is formed, the holder 58 releases the pins 40 and 41. The outer edges 44 and 45 of the extenders 42 and 43 using
    the springs 53 and 54 lie in the folds 67 and 68 of the corner cuffs 69 and 70 of the formed bottom 71.
    When bottom 71 is completely extended over expanders 42 and 43, its
    gripping moving on endless chains, x 72, clips 73, which fi1 c from the bottom folds and transfer them to the next position.
    At the end of the bottom folding, the upper cams 74 of the clips capture the folds 67 and 68 of the stretched bottom and press it against the lower cams 75 of the clips. In the area of the stretched bottoms, the clamps 73 are aligned with the guides 76.
    The proposed device is characterized by an increased quality of making large bags.
    (B
    Csj
    n
    权利要求:
    Claims (7)
    [1]
    1. DEVICE FOR STRETCHING-
    VANIA CUT OF A SLEEVE FOR FORMING A SQUARE BOTTOM WHEN MAKING BAGS, containing mounted on the frame, opening the end of the sleeve section of the suction cup, grabs installed on the shafts to capture the opposite edges of the sleeve segment, mounted on the shafts of the extender of the folds of the bottom and the drive of the grabs, which differs for the purpose that to improve the manufacturing quality of large bags, it has a table with a slot in the middle for introducing a sleeve segment, a pivot arm with a drive for turning it more than 180® between opposite sides of the ol, endless chain drives mounted under the table, and clamps fixed to the chains to form a square bottom, the suction cups are placed on one side of the table, one of the grapple shafts and extension shafts are mounted on the bed, and the other grab on the swing arm in the center of the sleeve.
    [2]
    2. The device according to π. 1, characterized in that one expander with respect to another makes an angle 9СР.
    [3]
    3. The device according to π. 1, characterized in that the drive of the grabs includes gear bevel gears, the gears of which are installed on the shafts of the grabs and expanders, a lever mounted on the shaft of the grab mounted on the frame, and a pneumatic cylinder connected to the lever, while the grab is freely mounted on the shaft and <g is connected to it by means of a torsion spring.
    [4]
    4. The device according to paragraphs. 1 - 3, characterized in that the torsion spring is fixed to the grab shaft through the clamping ring.
    [5]
    5. The device popp. 1 and 2, characterized in that on the grab and its shaft fixed stops for interaction with one another.
    [6]
    6. The device according to claim 1, wherein the rails are located under the table for
    10664 clips.
    [7]
    7. The device according to π. 1, characterized in that, the suction cups are placed on both sides of the expanders.
    >
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    同族专利:
    公开号 | 公开日
    DE2931607C2|1984-04-05|
    FR2462264B1|1984-11-30|
    JPS6341735B2|1988-08-18|
    GB2056905B|1983-09-07|
    FR2462264A1|1981-02-13|
    DE2931607A1|1981-02-05|
    IT1131575B|1986-06-25|
    GB2056905A|1981-03-25|
    US4371367A|1983-02-01|
    IT8023446D0|1980-07-15|
    JPS5624154A|1981-03-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1165765A|1912-05-29|1915-12-28|James Duvall|Diamond-forming means of paper-bag machines.|
    DE684840C|1937-09-24|1939-12-06|Mittelbadische Papier Manufakt|Device for making paper bags|
    US2224656A|1939-02-21|1940-12-10|Paper Sacks Ltd|Paper or like bag making machine|
    FR865652A|1940-05-16|1941-05-30|Paper Sacks Ltd|Improvements to machines for making bags of paper or other material|
    FR1358710A|1963-04-10|1964-04-17|Windmoller & Holscher Fa|Device for forming square bottoms during the production of paper bags and with a bottom folded in a cross|
    US3250187A|1963-06-26|1966-05-10|Union Carbide Corp|Bag making machine|
    FR1406705A|1964-06-24|1965-07-23|Union Carbide Corp|Apparatus for making bags|
    DE1561473B1|1967-06-19|1971-08-26|Windmoeller & Hoelscher|Device for raising and flattening cross bottoms on transversely conveyed plastic hose sections|
    DE2500532C2|1975-01-08|1976-12-09|Gartemann & Hollmann Gmbh|DEVICE FOR PULLING UP A BAG BOTTOM ON CROSS-FUNDED HOSE SECTIONS|DE3044715C2|1980-11-27|1984-07-19|Windmöller & Hölscher, 4540 Lengerich|Device for turning in the side folds on large cross-bottomed bags|
    DE3143772C2|1981-11-04|1985-09-12|Windmöller & Hölscher, 4540 Lengerich|Device for pulling on hose ends to form bottom squares of large cross-bottomed bags|
    DE3530742C2|1985-08-28|1987-12-17|Windmoeller & Hoelscher, 4540 Lengerich, De|
    CZ289183B6|1995-01-25|2001-11-14|Windmöller & Hölscher|Apparatus for opening out ends of flat tubular sections|
    CN104890294A|2015-01-09|2015-09-09|浙江天风塑料机械有限公司|Valve sack valve port folding forming device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2931607A|DE2931607C2|1979-08-03|1979-08-03|Device for pulling on tube sections to form cross bottoms in the production of large sacks|
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