EP0983732A2 - Device for stamping eyelets on a textile or plastic web - Google Patents

Abstract

The device comprises a lower tool (2) and drop-down upper tool (1). An inlet guide associated with the lower tool comprises an inlet yoke (5) with interconnected arms, surrounding the lower tool at one end, whereby the arms form a guide gap (10) for supplying the parts to the lower tool. An inlet guide rod (14) interacting with the yoke is operated to allow the yoke to lift up so far that a part to be supplied to the lower tool is brought into its appropriate position. The device comprises a lower tool (2) and drop-down upper tool (1). The inlet guide associated with the lower tool comprises an inlet yoke (5) comprising interconnected arms and surrounding the lower tool at one end whereby the arms form a guide gap (10) for supplying the parts to the lower tool. An inlet guide rod (14) interacting with the yoke is operated to allow the yoke to lift up so far that a part to be supplied to the lower tool is brought into its appropriate position. After lowering the yoke this part is mounted in the position for engagement by the tool. When the yoke is raised the guide rod (14) moves the part from the supply path (11) into its specific position in the guide gap (10).

Description

The invention relates to a device for inserting a Rivet bonded parts held together in a textile or plastic sheet, such as an eyelet insertion machine. In particular, the invention relates a device for inserting by means of a rivet composite Parts held together, for example by eyelets in a textile or plastic sheet with a lower tool and an upper one, interacting with this, lowerable tool, which tools means for holding one part each used for the rivet assembly in are assigned to its position intended for a tool attack, and with feeders for feeding such parts.

Such eyelet insertion machines are used, for example Eyelets, tarpaulin hooks, belt clamps, hooks or the like to be used in a tarpaulin, for example a commercial vehicle tarpaulin or to attach to it. Those held together by the rivet network both items are each via an automatic feeder fed lower or upper tool. Each feeder includes a collection container in which a variety of the tools to be fed Items are included. On the output side is one Collection container connected to a feed path on which the respective Tool-fed parts are encouraged. Taking advantage Gravity slides the individual parts down into a position that changes is located to the side of the respective tool. With the help of a cross direction to the feed stream of these individual parts acting feed rod the individual parts in a part holder assigned to the respective tool used. Such a parts holder considers this to be a riveted assembly provided item in its intended for a tool attack Position. The part holder assigned to the upper tool is one Holding pliers provided. As part holder for the lower tool assigned item is used in the known eyelet insertion machine also the lower tool itself. This is on a tool plate held and is laterally arranged by a distance from the tool Holding jaws limited. These holding jaws are resiliently pivotable the tool plate articulated so that an inserted item in its intended position by the tool and by the Holding jaw is fixed. To equip the lower tool with a new individual parts thus move in the working plane by feeding the individual part using the guide rod and the collection of this item with the resilient holding jaws.

There is a working gap between the upper part holder and the lower tool formed in which the textile or plastic sheet is inserted, in an eyelet, for example. So that an intended Equipping the lower tool with a new one If an individual part is possible, the textile or plastic web may complete the assembly process but do not hinder. A hindrance to the assembly process in a known eyelet insertion machine, for example by hanging the textile or plastic sheet in the Feeding take place. In such a case, proper assembly is required the lower tool not ensured; corresponding the desired insertion process cannot proceed as intended.

When the individual parts are fed to the lower tool, that the items to be fed are not properly the holding jaws are included, especially if such Item has marginal damage. Even in one The eyelet cannot be used as intended.

The invention lies on the basis of this prior art discussed therefore the task of a generic device for insertion for example to propose eyelets into a textile or plastic sheet, with a single part feed to the lower tool is improved.

This object is achieved in that the lower Tool associated feed one essentially of two in Region of one end enclosing the lower tool with each other connected legs existing feed bracket, whose Leg a guide gap for feeding the lower tool Forming parts to be fed and with their free ends to a feed path are arranged hinged hinged upward, and a feed rod cooperating with the feed bracket, with the feed bracket can be raised as far as possible when the feed rod is actuated is that a part to be fed to the lower tool is in the guide gap in its intended position above the lower one Tool can be brought and that this part after lowering of the feed bracket in its intended for a tool attack Position is arranged, and which feed rod with the lifting of the feed bracket the part to be fed to the lower tool Feed path in its intended position in the guide gap of the feed bracket moves.

By providing a pivotably articulated feed bracket Leg a guide gap for feeding the for loading the lower tool provided individual parts, the feed bracket in the case of an assembly with such an individual part via the upper one Completion of the lower tool raised and in the guide gap the single part is guided to the lower tool. Is a feeder created with a new tooling of the lower tool can be carried out without one in the through the upper and lower tool-formed working gap located textile or plastic web there is a risk of disability. The part to be fed below the level of the top of the feed bracket in the guide gap fed to the lower tool. In addition, the invention requires Device none in the plane of the textile or overlay Plastic web movable holding means. Through the guide gap of the Feeder bracket is provided a conveying path from the other components of the feed bracket is protected. Raising the feed bracket is made to feed the lower tool Individual part in an arrangement axially aligned with the lower tool bring before the feed bracket is lowered again and the item picked up by the lower tool and possibly by the front tool Area of the guide gap is held. Through this movement a textile or plastic sheet inserted into the working gap with raised, so that a hindrance to the tooling as a result a sagging textile or plastic web is avoided.

A feed rod is provided for actuating the feed bracket, with which both raised the feed bracket and the lower tool Item to be fed into its intended position in the guide gap of the feed bracket is moved.

In a preferred embodiment is on the cooperating with the feed bracket End of the feed rod arranged at least one roller. However, two roles are preferably provided. Top the bottom of the feed bracket lies on the rollers; support underneath the roles on a sub-bearing. Through the top of the Base and the underside of the feed bracket is an actuating gap formed, the clear width is less than the diameter of the rollers. As a result, when the feed rod is actuated, the guide bracket which is a movement of the Feed rod includes, raised in the area of its front end. The feed bracket swivels around its frame-side linkage. For Achieving a sufficient lifting movement of the feed bracket the shortest possible actuation path of the feed rod is in one Further training provided, the subcamp in the manner of an inclined plane to train upwards towards the lower tool.

In an expedient embodiment, the feed rod is the piston rod a cylinder that can be operated in both directions, for example one Pneumatic cylinder.

For transporting an individual part from a feed path into the guide gap the feed bracket to its intended position the feed rod can have a driver cam on the top, with the individual item to be fed, which is isolated on the feed path is.

In a particularly expedient embodiment, the actuation movement the feed rod means for separating the on the feed path adjoining arranged individual parts assigned. This can be, for example, a separating pen that moves away of a first such individual part from the feed path into the guide gap of the feed bracket as a stopper for the following individual parts serves.

Fig. 1:

Eine schematisierte Teilseitenansicht des Arbeitsbereiches einer Öseneinsetzmaschine,

Fig. 2:

eine Draufsicht auf das untere Werkzeug und angrenzender Bereiche der Öseneinsetzmaschine der Figur 1,

Fig. 3:

eine schematisierte Frontansicht des dem oberen Werkzeug zugeordenten Teilehalters der Öseneinsetzmaschine und

Fig. 4:

eine schematisierte Draufsicht auf den Teilehalter der Figur 3.

Further refinements of the invention and further developments form part of the other subclaims and the following description of an exemplary embodiment with reference to the attached figures. Show it:

Fig. 1:

A schematic partial side view of the working area of an eyelet insertion machine,

Fig. 2:

2 shows a plan view of the lower tool and adjacent areas of the eyelet inserting machine in FIG. 1,

Fig. 3:

a schematic front view of the upper tool associated parts holder of the eyelet and

Fig. 4:

a schematic plan view of the parts holder of Figure 3.

An eyelet insertion machine, not shown, includes an upper one Tool 1 and a lower tool 2. With the upper tool 1 it is a punching and flanging tool; at the bottom Tool 2 is a rivet die. The two tools 1, 2 are axially aligned and cooperating with each other, the upper tool 1 according to the direction of the arrow to the lower Tool can be lowered. The upper tool 1 is one in FIG. 1 Assigned parts holder, not shown, in each of which an eyelet upper part is held. The lower tool 2 is on a tool plate 3, which in turn is arranged on a tool table 4, held fastened.

The lower tool 2 is assigned a feed bracket 5, which is one The axis of rotation 6 is pivotally articulated on the frame of the eyelet insertion machine is. As can be seen from FIG. 2, the feed bracket 5 has two in parallel mutually arranged legs 7, 8, which the lower tool 2nd are connected to one another at the end. The feed bracket 5 is thus approximately U-shaped. In the area of its front, tool-side End 9 is the bottom of the feed bracket 5 on the top of the tool table 4. In this lying on the tool table 4 Position is the feed bracket 5 when using the eyelet insertion machine an eyelet is inserted into a textile or plastic sheet and for this purpose the upper tool 1 for performing the punching and and the riveting process is lowered onto the lower tool 2.

The legs 7, 8 of the feed bracket 5 define a guide gap 10, in which the lower eyelet parts to be fed to the lower tool - collar washers - Are fed from a feed path 11. Corresponding are the mutually facing sides of the two legs 7, 8 with regard to their contour to ensure the intended management purpose and with regard to their clear distance to each other to be fed Individual parts adapted. Here are the collar washers to be fed held in the guide gap 10 so that the top the collar plate in a plane below the top of the feed bracket 5 is located.

For feeding such an individual part from the guideway 11 into the Guide gap 10 and to the lower tool 2 is a piston-cylinder arrangement 12 provided. The cylinder 13 of this piston-cylinder arrangement 12 can be actuated pneumatically in both directions, so that the Feed rod serving piston rod 14 both away from the cylinder 13 and can also be moved towards it. At the free end of the piston rod 14 are two rollers 15, 15 'on both sides of a bearing block 16 arranged. The rollers 15, 15 'are supported on the underside on a sub-bearing 17, which is in the manner of an inclined plane to the tool table 4 or to the lower tool 2 is designed to rise. On the underside of the feed bracket 5 lies on the upper side of the rollers 15, 15 ′ on. Through the sub-base 17 and the underside of the feed bracket 5 is thus an actuating gap is formed, the clear width of which is less than the diameter of the rollers 15, 15 '.

Projecting upwards from the bearing block 16 into the guide gap 10 a driver cam 18 is provided, with which to the lower tool 2 facing end face to bottom each on the feed path 11 lying collar disc S in its position above the lower tool 2 can be pushed. To carry out this assembly movement the cylinder 13 is actuated so that the piston rod 14 extends. During the extension process, the rollers 15, 15 'are in the actuating gap between the sub-bearing 17 and the underside of the feed bracket 5 moved in, so that the feed bracket 5 correspondingly in its Figure 1 pivoted position shown pivoted about the axis of rotation 6 becomes. The lifting movement in the area of its the lower tool 2 enclosing area is used to feed the collar plate To bring S into a position above the lower tool 2, then the feed bracket by retracting the piston rod 14 5 to bring it back into its lowered position. One of the lower tool 2 fed collar disc S is then from the lower Tool 2 held so that this in the illustrated embodiment serves as a parts holder. In addition, an item can also through the front areas of the guide gap 10 of the feed bracket 5 be fixed.

From the description of this eyelet insertion machine it is clear that by lifting the feed bracket 5 when loading the lower one Tool 2 with a new item to be processed one in the Working gap between the upper tool 1 and the lower tool 2 inserted plastic tarpaulin 19 can be inserted without this Hinder assembly process. The one on the top of the feed bracket 5 lying plastic tarpaulin 19 is in accordance with the movement of the feed bracket 5 during a loading operation with and thus at a sufficient distance from the item to be fed and the lower tool 2 held.

In addition to the functions of the piston-cylinder arrangement shown in FIG. 1 12, namely the raising and lowering of the feed bracket 5 and the feeding of an item to be processed from the feed path 11 to the lower tool 2 is the actuating movement of the Piston rod 14 also the movement of a not shown Coupling pin coupled by which a singling of the on the Feed path 11 in a row of individual parts arranged adjacent to one another (Collar washers) can be brought about. Through the pen that is in his extended position is arranged as soon as the piston-cylinder arrangement 12 is actuated to extend the piston rod 14 is a Slipping of the other individual parts prevented as soon as the lowest has been pushed away by the driver cam 18. Only when the piston-cylinder arrangement 12 again in its shown in Figure 1 Home position is lowered, the singler pin, so that the next individual part is ready for loading the lower tool 2. Figure 3 shows a schematic front view of the working area of the Eyelet insertion machine. A parts holder 20 is assigned to the upper tool 1, which borders directly on a feed chute 21. The feed chute 21 is at the exit of a parts collector, not shown connected from which the individual eyelet parts 22 to the Feed slide 21 are promoted. For example, as a parts collecting container a brush conveyor must be used. The parts holder 20 is below arranged of the upper tool 1, which in the parts holder 20 individually held eyelet parts 22 axially aligned with the upper Tool 1 are held. The eyelet parts 22 are in the parts holder 20 by two resiliently arranged clamps 23, 23 ', as shown in FIG. 4, held. For separating the individual eyelet parts 22 from their contiguous arrangement in the feed chute 21 is a slider 24 is provided, which acts transversely to the inflow direction of the eyelet parts 22. The slide 24 is moved via a pneumatically operating cylinder 25 operated. The slide 24 is in its retracted position, when the parts holder 20 to be fitted with a new eyelet part 22 is. Following the force of gravity, this slips down in the feed chute 21 lying eyelet part 22 in the part holder 20. By operating the cylinder 25 extends the slide 24 so that the further eyelet parts 22 are retained be and thus a separation of the in the parts holder 20 located eyelet 22 is reached. The extension of the Slider 24 for exact positioning of the part 20 inserted Eyelet part 22 between the two brackets 23, 23 '. Through this direct parts feed to the upper tool 1 can be used additional feed elements, such as feed rods, are dispensed with.

The feed path 11 for feeding those to be fed to the lower tool 2 Collar washers at the exit of a not shown Oscillating pot connected. The transducer is in cross section circular and is operated with a vibration drive. By doing Swinging pot is a multi-start conveyor spiral on the inside wall of the Swing pot arranged over which those in the swing pot Collar disk to the feed path 11 are promoted. The collar washers must be arranged in the correct position on the feed path 11 in order to to be fed to the lower tool 2. To this The purpose of the conveyor spiral is a reject gate with which those Collar disks are discarded, which are not in their for Feed in the correct position. The reject switch is in one Section of the conveyor spiral arranged in the below of this is another spiral conveyor. In the area of the reject gate the conveyor spiral consists of two arranged parallel to each other Conveyor rails, the distance between which is such that the Collar discs with their collars in this spiral feed opening can intervene. Collar discs, with their collars facing upwards are brought forward, fall through this winding spiral opening and are caught by the Föderwendelgang below. Such a collar disc, which was initially sorted out, then needs to be transported only one single spiral turn in order to be re-fed to the reject gate. It has shown that when the collar washers fall down, they are in the Turn most of the cases so that they are then conveyed in the correct position become. The resulting advantages are in particular: that a high conveying speed can be achieved with this oscillating pot can, because rejected collar washers do not cover the entire spiral conveyor section must be funded again. In the area of the reject gate if the conveying helix has no inner boundary web, so that incorrectly brought up collar discs also by sliding down can be sorted out by the conveyor spiral.

To further increase the conveying speed of the vibrating pot provided that the collar washers in conveyor coil sections before Reject switch are promoted in a tilted position, in which this marginally only a transition area between the upper side of the spiral conveyor and an inner boundary web and the inner lateral surface contact the oscillating pot. The resulting reduced friction also leads to an increase in the conveying speed with the Single parts to be conveyed. With these measures, the Swinging pot with a considerably smaller diameter than conventional ones Swing pots, so that only correspondingly smaller vibration drives are needed.

Compilation of the reference symbols

1

Upper tool

2nd

Lower tool

3rd

Tool plate

4th

Tool table

5

Feed bracket

6

Axis of rotation

7

leg

8th

leg

9

Tool-side end

10th

Leadership gap

11

Feed path

12th

Piston-cylinder arrangement

13

cylinder

14

Feed rod / piston rod

15, 15 '

role

16

Bearing block

17th

Sub bearing

18th

Driving cams

19th

Plastic tarpaulin

20th

Parts holder

21

Feed chute

22

Eyelet part

23, 23 '

Bracket

24th

Slider

25th

cylinder

S

Collar plate

Claims (9)

Device for inserting parts held together by means of a rivet bond, for example of eyelets in a textile or plastic sheet, with a lower tool (2) and an upper tool (1), which tools (1, 2) cooperate with this, means for holding of one part used for the rivet assembly in its position intended for a tool attack, and with feeders for feeding such parts, characterized in that the feeder associated with the lower tool (2) essentially consists of two in the region of its one end the lower tool (2) enclosing, interconnected legs (7, 8) existing feed bracket (5), the legs (7, 8) forming a guide gap (10) for feeding the parts to be fed to the lower tool (2) and with them free ends are hinged to a feed path (14) upward pivoted, and one with the feed bracket (5) z co-operating feed rod (14) with which the feed bracket (5) can be raised when the feed rod (14) is actuated to such an extent that a part to be fed to the lower tool (2) in the guide gap (10) into its intended position above the lower tool (2) can be brought and that this part is arranged after lowering the feed bracket (5) in its position intended for a tool attack, and which feed rod (14) with the lifting of the feed bracket (5) to be fed to the lower tool (2) Part of the feed path (11) moved into its intended position in the guide gap (10) of the feed bracket (5). Apparatus according to claim 1, characterized in that at least one roller (15, 15 ') is arranged on the end of the feed rod (14) cooperating with the feed bar (5), on which the underside of the feed bar (5) rests on the upper side and which bears is supported on the underside on a sub-bearing (17), the clear width of an actuating gap formed between the underside of the feed bracket (5) and the sub-bearing (17) being less than the diameter of the at least one roller (15, 15 '). Apparatus according to claim 2, characterized in that the sub-bearing (17) is designed in the manner of an inclined plane rising towards the lower tool (2). Device according to one of claims 1 to 3, characterized in that the feed rod (14) is the piston rod of a cylinder (13) which can be actuated in both directions. Device according to one of claims 1 to 4, characterized in that the feed rod (14) has a driver cam (18) on the upper side for moving a part to be fed to the lower tool (2) from the feed path (11) into the guide gap (10) of the feed bracket ( 5). Device according to one of claims 1 to 5, characterized in that the feed rod (14) has means for separating the parts arranged adjacent to one another on the feed path (11), which means are coupled to the actuating movement of the feed rod (14). Device according to one of claims 1 to 6, characterized in that the feed of the part to be fed to the upper tool (1) comprises a feed path (21) which borders on a parts holder (20) in which the fed part (20) is separated into its position intended for the tool attack is held, a slide (24) acting in the transverse direction to the supply flow of the parts (22) for separating the parts (22) and for positioning the separated parts between the feed path (21) and the parts holder (20) (22) is arranged in the parts holder (20). Device according to one or more of claims 1 to 7, characterized in that for conveying parts to be fed from the tools in a predetermined position, the feed path of a feed is connected to the outlet of a vibrating pot which is circular in diameter and in which a multi-turn conveyor helix with a reject gate is arranged is which reject switch is provided in a region of the conveyor helix in which there is a conveyor helix section below the reject switch, which conveyor helix has a central opening in the region of the reject switch, so that incorrectly positioned parts are caused, inter alia, by the perforation on the section located below this conveyor helix section the funding spiral fall. Apparatus according to claim 8, characterized in that the parts to be fed are guided, at least in sections, in front of the reject switch in a tilted position in which they only make contact at the edge with the transition area between the top of the conveyor helix and an adjacent inner delimitation web and the inner oscillating pot surface.

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