JPS6284705A - Apparatus for advancing fastener and stopping the same at constant position - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION In the course of a finishing operation, the present invention provides a method for forming a mating member of the mating surface, in particular two rows of mating members made of plastic monofilament, and two spreading tapes carrying each row of mating members. A fastener (of a certain length) is moved forward step by step by a specific distance, the drive device acts on the fastener according to specific positioning data and stops it, and the finishing operation is performed by the finishing tool in this fixed position finishing area. It concerns H n that can be performed. The engagement member has an engagement head, side wall surfaces, and a rear joint portion. The joining of the mating element rows to the support strip can be carried out by weaving or stitching, with suitable built-in or attachment threads that grip the sides more or less completely. "Finishing operation" means an operation performed on a length of fastener by a suitable machine tool to yield an individual fastener sliding fastener. This is 1
, a locking member at the end, a slider device for cutting to a predetermined length, or for releasing an engaged engagement member. The corresponding operation not only requires matching the length of the binding sliding fastener to be manufactured, but also requires special positioning in relation to the individual engagement members in the range of degrees of movement required.

In the known KFa, the forward movement of the engaged spreading tape is effected by a roller driven correspondingly to the steps, which does not engage the fastener Ll 11 but by frictional contact. It was meant to make the zipper move. The positioning of the fastener is only monitored by an auxiliary device consisting of a sprocket. The teeth of the sprocket engage the gaps between adjacent meshing members, and the cogwheel mounted on the shaft of the sensor sprocket operates the switch via the lever sprocket. C1
The tool for soil manipulation is arranged to operate only when the switch is closed, and this is arranged to close only if the positioning is correct. For this reason, the auxiliary HM is installed just before the finishing area. This known measure can lead to relative movements due to slippage occurring between the roll and the fastener surface and therefore does not affect the titration. This is detrimental to positioning and must be correctly repositioned by manual correction each time. Moreover, this known device cannot be used with fasteners of different thicknesses, plastic monofilaments of different thicknesses.

In other areas of the field, computer-controlled positioning drives using stepper motors or DC servo motors are known.

This can be numerically controlled and converts electronically specified variable quantities into movement distances, making it possible to rest the product to be processed in a fixed position.

Until now, such positioning drive devices have been used for tightening ■-1
It has not contributed to the development of sliding fastener manufacturing equipment. In particular, this is because when rolls are used for transporting spreader tapes, the above-mentioned problems remain and the greater solution possibilities of a conoputor-controlled positioning drive cannot be exploited effectively.

The object of the present invention is to provide an SRa for manufacturing fastening sliding fasteners by means of a conoputor-controlled positioning device, and at the same time achieve a very precise fixed position rest of the engaging tensioning tape in the work area. It is also an object of the present invention to improve such that slide fastener chains or slide fastener links composed of expanded dezos of different thicknesses and plastic monofilaments of different thicknesses can be processed in the same device without any difficulties.

According to the present invention, during the finishing operation, a continuous fastener consisting of a stationary engaging member, in particular two rows of engaging members made of plastic monofilament, and two spreading tapes carrying each row of engaging members is moved a specified distance. In the apparatus for moving the fastener forward step by step and resting the fastener in a fixed position finishing area in order to perform a finishing operation with a finishing tool during the pause in the movement, the drive device configured as a positioning drive device is a stepping motor or a stepping motor. has a DC servomotor to which data is supplied via a microprocessor to move the fastener forward and to rest in position; A device is provided, characterized in that the side wall surfaces of the meshing members engage the gap between adjacent meshing members, and the required forward movement and finish area rest in position are determined by the rotation angle of the drive sprocket. .

In this invention, the engaging member array supported on the tension tape is specified over a predetermined length corresponding to the interval pitch thereof,
A driving sprocket that creates a limited number of meshing members and engages them coldly transfers a specified number of meshing members according to the measurement result of the rotation angle, and similarly transfers them to the gear rack. Take advantage of the fact that it works. Therefore, the engaged tension tape is pushed or pulled in the nq direction by the drive sprocket and positioned at the same time. This is all done with great precision since the contact points on the sidewalls of the mating members are exactly aligned with the sidewalls of σf, and the forward movement and positioning operations are all coordinated and computer-processed. If plastic monofilaments of different thicknesses are used for the mating members, the location of the contact points with the sprocket teeth will change, and this is addressed by information or input to the microprocessor. However, in other respects the device of the invention remains unchanged. Therefore, different types of fastener sliding fasteners, ie different thicknesses of plastic monofilaments, can be processed at the same sA location. It will be readily understood that this point can be appropriately accommodated in a computer program. It is desirable that there be feedback of information to further control positioning. In a very simple case, the sensor is associated with a positioning drive that measures the actual angle of rotation swiveled by the drive sprocket, and this measured value is transmitted as a correction value to the positioning drive, which provides rotational angle feedback. Furthermore, it is possible to provide a sensor associated with the positioning drive which measures the actual distance due to the forward movement of the engaging and spreading tape, and to transmit this measured value as a correction value to the positioning drive.

In this regard, travel distance feedback, typically in computer-controlled positioning devices, can be used to further increase the accuracy of automatic control of the device. The sensor is configured as a sprocket sensor and can be adapted to the drive sprocket type. However, a sensor can be associated with the positioning drive to measure the actual positioning in the finishing area and to transmit this measured value as a correction value to the positioning device. Here, position measurement feedback is used to increase accuracy. In this case, the sensor is preferably configured as an optical sensor. If rotational angle feedback is used, the tolerances regarding the rotational angle in the positioning device are always kept small.

On the other hand, the pitch and rotation angle of the engaging members carried on the spreading tape must match each other. If the pitch has to be changed due to technical tolerances, this can be determined from time to time by tests and a corrective input to the positioning Ha can be considered. Movement distance feedback and positioner measurement feedback provide automatic correction in this regard.

The shape of the drive sprocket is essentially arbitrary within the scope of the invention. In this preferred embodiment of the invention, a fastening sliding fastener in which the engaging member is constructed of PlusDeck monofilament and has a built-in or device cover on and substantially covering the sliding surface of the engaging member is used. The configuration is such that the drive sprocket or sensor sprocket has tooth side walls that converge like a knife edge toward the tooth tips, and is inserted through the cover of the slide fastener link that is incorporated or I feel pressured. Of course, the compression of the drive sprocket against the side surface of the meshing member can be avoided by providing a suitable suppression device on the drive sprocket itself that acts against the side surface of the meshing member, or conversely by supporting the slide fastener chain near the drive sprocket against the drive sprocket. It can be produced by compressing the strip or by the action of both methods. The drive sprocket is placed as close to the finishing area as possible to reduce errors caused by positioning. A positioning drive device is used to locate teeth that are mounted on the same drive shaft and whose spacing between meshing members is shifted by half a pitch.
It will also be apparent that providing separate drive sprockets and sensor sprockets for the two spreading tapes will contribute to reducing errors. According to a preferred configuration embodiment of the invention, the depth of engagement of the teeth that engage the gap between adjacent fastener links is adjustable. It is possible to make the positioning adjustable by varying the retention depth of the teeth. A computer-controlled positioning drive can also be adapted to accommodate special operations for the control of movement, which is important in conjunction with the processes described above, when performing automatic finishing operations on slide fastener chains. can. This known operation involves measuring the number of interlocking members present in a desired length range of engaged tension tape entering the device, and determining the actual number of interlocking members and the associated length of the fastener sliding fastener. The required number of control steps is determined by the computer by comparing this quotient with the value of the specified length of the fastener sliding fastener, and the movement control for the finishing operation is performed according to this value. It is characterized by

Embodiments of the invention will be described below with reference to the accompanying drawings.

H a shown in the drawing includes two rows of interlocking members 2 made of plastic monofilament and interlocking with each other.
In the process of finishing operation, the two tension tapes 3, each having a width, are moved forward and stopped at a fixed position.

A continuous fastener 1 consisting of this interlocking member and tape is advanced step by step over a specific distance. The length W is determined, for example, by the length of the slide fastener being manufactured and the position along the length of the finishing operation area. During the forward motion body stop, the finishing operation is performed using the orientation iK indicated by 4.
This is achieved by finishing tools in the process. Device? 25 drives and operates the continuous fastener 1 of a certain length in accordance with predetermined positioning data. Where is the positioning data?
Indicates at what point a particular finishing operation is to be carried out, for example the arrangement of the end or locking member.

The drive device is a positioning drive V;i! 25. It is operated by step motor or DC servo motor. In any case, the data for the travel distance and its positioning are provided via the microprocessor→J.7. The positioning drive 5 comprises a drive sprocket 8 acting on a length of fastener 1, which is driven for positioning by means of a toothed belt 6! It is connected to the shaft of the I7 device 5.

FIG. 3 shows that the teeth of the drive sprocket 8 are engaged in the gap of the adjacent meshing member 2, with the side wall surface 11 of the tooth acting on the side surface 12 of the adjacent meshing member 2 with at least one contact point 13. Show that. The forward movement distance W is determined by the rotation angle 1f14 of the drive sprocket 8.

The same is true for fixed position rest. The starting and stopping positions of the drive sprocket 8 are of course taken into account. In the configuration shown in FIG. 1, a sensor 15 for measuring the actual rotation angle is associated with the positioning drive 5, and the measured value is passed through the microprocessor 7 as a correction value to the positioning drive 5. brought to. As is clear from FIG. 3, l! is engaged with the gap 10 between the adjacent meshing members 2! (The depth of the tooth 9 is adjustable. Therefore, the positioning in the second area of the tooth 9
can be adjusted by changing the depth of engagement of the.

[Brief explanation of drawings]

FIG. 1 is a diagram illustrating the device of the invention with rotational angle feedback; FIG. 2 is a partial perspective view of the vtH of the invention; FIG. This is an enlarged scale drawing that does not show the barking condition where the teeth are engaged. 1... Continuous longitudinal surface 2... Engaging member 3... Stringer tape 5... Positioning device 7... Microprocessor 8. ... Drive sprocket 10 ... Gap - 13 ... Contact point

Claims (10)

[Claims] (1) In the process of finishing operation, the engaging member in the engaged state,
In particular, two rows of interlocking elements made of plastic monofilament and a spreading tape 2 carrying each row of interlocking elements.
The device is configured as a positioning drive device, and is configured as a positioning drive device for moving a continuous fastener consisting of a book forward stepwise by a specific distance, and resting the fastener in a fixed position finishing area in order to perform a finishing operation with a finishing tool during the pause in movement. a drive device having a stepper motor or a DC servo motor, to which data is supplied via a microprocessor to move the fastener forward and to rest in position; and said drive device drives at least one drive sprocket. Apparatus having a side wall surface of its teeth that engages a gap between adjacent meshing members, the required forward movement and finish area resting in position being determined by the rotation angle of the drive sprocket. (2) A patent characterized in that the sensor measures the actual rotation angle rotated by the drive sprocket in conjunction with the positioning drive, and this measured value is transmitted to the positioning drive as a correction value. Apparatus according to claim 1. (3) The sensor is linked to the positioning drive to measure the actual forward movement distance of the fastener in the engaged state, and this measured value is transmitted to the positioning drive as a correction value. Claims 1 to 2
Sectional equipment. 4. A device according to claim 3, characterized in that the sensor is configured as a sprocket sensor and is adapted to the type of drive sprocket used. (5) The sensor, in conjunction with the positioning drive, measures the actual rest position in the finishing area, and this measured value is transmitted as a correction value to the positioning drive. Apparatus according to paragraphs 1 and 2. (6) The device according to claim 5, characterized in that the sensor is constructed as an optical sensor. (7) The teeth of the drive sprocket or sensor sprocket have side wall surfaces that converge toward their tips, and the tips are capable of penetrating the woven or adhesive cover that covers the engagement member row. An apparatus according to any one of claims 1 to 6, characterized in that: (8) The positioning drive has separate drive sprockets and sensor sprockets for each spreading tape, which are mounted on the same drive shaft and have teeth that are displaced by half the spacing pitch of the meshing members. An apparatus according to any one of claims 1 to 7, characterized in that: (9) The device according to any one of claims 1 to 8, characterized in that the depth of the teeth that engage with the gap between the meshing members is adjustable. 10. The device of claim 9, wherein the positioning of the fixed length fastener is adjustable by varying the depth of the engaging teeth between adjacent mating members.