DE102018130008A1 - Method for producing a plastic part with several wire paths running through the plastic part, tool insert, winding device and system for producing a plastic part with several wire paths running through the plastic part - Google Patents

Abstract

The invention relates to a method for producing a plastic part (100), in particular a plastic container, with a plurality of wire paths (101), in particular heating wires, running through the plastic part (100), the plastic part (100) having at least one chamber (102), the Wire paths (101) run in sections through the chamber or chambers (102) and are integrated in sections in the plastic part (100). The invention further relates to a tool insert (300), a winding device (400) and a system for manufacturing a plastic part (100).

Description

The invention relates to a method for producing a plastic part, in particular a plastic container, with a plurality of wire webs running through the plastic part, in particular heating wires, the plastic part having at least one chamber, the wire webs running in sections through the chamber or the chambers and in sections are integrated in the plastic part.

The invention further relates to a tool insert for an injection molding tool, in particular for carrying out the method according to the invention, and a winding device, in particular for carrying out the method according to the invention. Furthermore, the invention relates to a system for producing a plastic part, in particular a plastic container, with a plurality of wire webs, in particular heating wires, running through the plastic part, the plastic part having at least one chamber, the wire webs running in sections through the chamber or the chambers and for others are integrated in sections in the plastic part, the system being provided in particular for carrying out the method according to the invention.

There is a requirement to arrange a planned number of wire paths in parallel next to one another and without contact in a plastic part to be produced, the plastic part being intended to have at least one chamber through which the wire paths run. Furthermore, the wire tracks should be integrated in sections in the plastic part, so that the wire tracks are tensioned and permanently arranged in parallel next to one another and without contact in the plastic part. Parallel wires are also understood to mean essentially parallel wires or largely parallel wires.

The invention is therefore based on the object of specifying a new method for producing a plastic part, in particular a method which at least largely meets the aforementioned requirements.

It is also an object of the invention to provide a new tool insert, in particular for carrying out the method according to the invention, and a new winding device, in particular for carrying out the method according to the invention. Furthermore, it is an object of the invention to provide a new system, in particular for producing the plastic part and for carrying out the method according to the invention.

This object is achieved with regard to the method by the features of claim 1 and with regard to the tool insert by the features of claim 8, with regard to the winding device by the features of claim 23, and with regard to the system by the features of claim 31. Advantageous refinements and developments are specified in the respective dependent claims.

1. a) Bereitstellen eines Drahts, insbesondere eines zu einer Drahtrolle aufgewickelten Drahts, eines Werkzeugeinlegers, einer Wickelvorrichtung, und eines Spritzgießwerkzeugs,
2. b) Verbinden des Werkzeugeinlegers mit der Wickelvorrichtung,
3. c) Verbinden des Drahts, insbesondere des Drahtanfangs, mit dem Werkzeugeinleger, wobei der Werkzeugeinleger zwei sich gegenüberliegende Wendebereiche aufweist,
4. d) Wickeln des Drahtes mittels der Wickelvorrichtung um den Werkzeugeinleger, so dass sich zwischen den beiden sich gegenüberliegenden Wendebereichen des Werkzeugeinlegers mehrere Drahtbahnen ergeben,
5. e) Einlegen des mit dem Draht umwickelten Werkzeugeinlegers in das Spritzgießwerkzeug,
6. f) Umspritzen der Drahtbahnen mit Kunststoff zur Ausbildung des Kunststoffteils derart, dass das Kunststoffteil wenigstens eine Kammer ausbildet, wobei die Drahtbahnen zum einen abschnittsweise durch die Kammer oder die Kammern verlaufen und zum anderen abschnittsweise in das Kunststoffteil integriert werden.

The method according to the invention for producing a plastic part comprises the steps:

1. a) providing a wire, in particular a wire wound into a wire reel, a tool insert, a winding device, and an injection mold,
2. b) connecting the tool insert to the winding device,
3. c) connecting the wire, in particular the start of the wire, to the tool insert, the tool insert having two opposite turning areas,
4. d) winding the wire by means of the winding device around the tool insert, so that several wire paths result between the two opposite turning areas of the tool insert,
5. e) inserting the tool insert wrapped in the wire into the injection mold,
6. f) Injection molding of the wire webs with plastic to form the plastic part in such a way that the plastic part forms at least one chamber, the wire webs running in sections through the chamber or the chambers and being integrated in sections into the plastic part.

The advantages of the invention are, in particular, that a plastic part with an intended number of wire paths, which are arranged at least as far as possible or essentially parallel to one another and without contact in the plastic part, can be produced in a simple, cost-effective and repeatable manner in the same quality.

Chamber is preferably not only viewed as cavities in the plastic part, but in particular also recesses or openings or other free spaces in the plastic part.

Wire path is understood to mean in particular a wire or a wire section, wire tracks correspondingly mean a plurality of wires or wire sections. The wire paths here preferably run at least substantially parallel to each other. The wires or wire sections are preferably heating wires.

The wire webs after winding around the tool insert are preferably each a section of the wound wire between two turning areas of the tool insert. For the time being, these wire paths are still interconnected as wire. Later, in particular after the plastic part has been formed, the wire webs can be separated from one another by severing the wire, so that the wire webs are then separated from one another in the plastic part and are thus separate wires or wire sections.

In particular, the areas of the tool insert, for example the outer sides of the threaded devices of the tool insert, in which the wire turns its direction by 180 ° or is bent by 180 ° during winding are regarded as turning areas.

The wire can also be connected to the tool insert before the tool insert is connected to the winder.

Preference is given to step a ) the wire is provided as a wire roll, the wire roll being provided in a further step for connection to the winding device on a feed device of the winding device, the wire being able to be unwound from the wire roll by means of the feed device.

It can be provided that in step b ) the tool insert is received in a receiving element of the winding device, the receiving element being provided on a drive shaft of a drive unit of the winding device, so that the tool insert connected to the receiving element can be set in rotation by the drive unit for winding around the wire.

It can further be provided that in step c ) for connecting the wire to the tool insert, the wire, in particular the beginning of the wire, is connected to the tool insert by means of a first clamping device of the tool insert.

According to a preferred embodiment of the invention, step d ) the tool insert is set in rotation by means of the drive unit, so that the wire is wound around the tool insert in several wire paths.

The drive unit of the winding device can be operated manually, for example by means of a crank, or automatically.

It can also be provided that in step d ) the drive unit, in particular during the rotational movement of the drive shaft, generates a feed movement of the drive shaft in the direction of its longitudinal axis, so that the wire tracks are wound around the tool insert at a distance from one another. The feed movement is preferably a negative feed movement.

It is preferred after step d ) for attaching the wire, in particular the wire end, to the tool insert, the wire, in particular the wire end, is connected to the tool insert by means of a second clamping device of the tool insert.

It is preferred after step d ), in particular after attaching the wire, in particular the wire end, to the tool insert, the tool insert is released from the winding device, in particular by removing the tool insert from the receiving device of the winding device.

At step e ) the tool insert, for example by means of one or more fitting bores on the tool insert and one or more locating pins in the cavity of the injection mold, can be positioned in the injection mold, preferably with a precise fit.

In order to encapsulate the wire webs in such a way that the plastic part forms at least one chamber, the wire webs running partly through the chamber or the chambers and partly integrated into the plastic part, an injection molding tool is provided which has at least one cavity which specifies the intended form.

It is preferably provided that the plastic part is removed from the injection mold together with the tool insert after the wire webs have been overmolded. The tool insert and plastic part can then be separated.

After removal from the injection mold, the plastic part is preferably fed to a cutting device, the cutting device being used to cut the wire, in particular at or near the turning areas and / or at the edge of the plastic part, so that the wire webs are separated from one another.

Furthermore, it can be provided that the sprue on the plastic part, in particular laterally on the plastic part, is cut off in the cutting device.

After the wire has been cut, further punching and / or cutting processes can be carried out to remove excess plastic and / or excess wire.

All of the steps involved in transporting the tool insert and / or the plastic part can be carried out manually or using one or more robots. For example, 6-axis articulated robots or linear units can be provided that guide the plastic part and / or the tool insert from one processing station to another.

It can be provided that a quality control is carried out as the final step.

Furthermore, it can be provided that the plastic part with the integrated wire webs, for example after quality control, is fed to a packaging process.

The tool insert according to the invention is characterized in that the tool insert comprises a, preferably elongated, holding element and two thread devices for providing turning areas for the wire during winding, the thread devices being arranged in the opposite end regions of the holding element, a first thread device as a threaded pin and a second thread device is designed as a threaded element, both thread devices having an external thread for guiding the wire during winding, the thread pitch specifying the spacing of the wire paths when wrapping the tool insert.

The tool insert is preferably provided for a system which is provided for producing a plastic part, in particular a plastic container, with a plurality of wire paths, in particular heating wires, running through the plastic part, the plastic part having at least one chamber, the wire paths partly passing through the chamber or the chambers run and, on the other hand, are integrated in sections in the plastic part.

The thread pitch preferably has twice the value of the proposed wire spacing.

The threaded pin is preferably a component that can be detached from the holding element, whereas the threaded element can both be detachable from the holding element and can be firmly connected to the holding element. In particular, the threaded element can also be formed by a shape on the or the holding element.

The holding element can be U-shaped, the threaded devices being arranged on the legs of the U-shaped holding element, in particular their ends on the head side, and perpendicular to the longitudinal axis of the holding element.

The holding element can have two continuous receiving bores perpendicular to its longitudinal axis, a first receiving bore being provided for receiving a section of the setscrew, the first receiving bore having a first diameter in a first, in particular head-side, section, and the first receiving bore in a second , in particular on the bottom side, has a second diameter which is larger than the first diameter, so that a heel surface is or is formed between the sections.

It can be provided that the threaded pin has a first diameter in a first section which is larger than the diameter of the first receiving bore in its first section and has a second diameter in a second section which is smaller than the diameter of the first receiving hole in its first section, a shoulder surface being or being formed at the transition between the first section and the second section of the threaded pin, so that the second section of the threaded pin can be inserted or introduced into the first receiving bore of the holding element as far as the shoulder surface.

Furthermore, it can be provided that in the second area of the first receiving bore a spring is arranged parallel to the longitudinal axis of the first receiving bore, the spring partially enclosing the threaded pin inserted into the first receiving bore, the spring in its relaxed state preferably being longer than the second area of the first mounting hole.

According to a development of the invention, it is provided that the threaded pin has at its end adjoining the second section a, preferably screw-on or attachable, cover cap, the spring being tensioned between the cover cap of the threaded pin inserted into the first receiving bore and the heel surface of the first receiving bore or is exciting.

The second section of the threaded pin is preferably larger than the length of the first receiving bore by an intended length.

According to a preferred embodiment of the invention, the tool insert has at least one first clamping device, the clamping device for clamping the wire, In particular, the beginning of the wire is provided, wherein the first clamping device is formed by the threaded pin, which is provided in the first receiving bore, and the holding element, and by the spring and the cover cap, the first section of the threaded pin from the holding element being applied when a force is applied counter to the spring force is pushed away or can be pushed away, so that a gap is formed between the holding element and the shoulder surface of the threaded pin, the gap being provided for receiving the wire, in particular the beginning of the wire, and the shoulder surface of the threaded pin against the holding element when the force is lost counter to the spring force is pressed in such a way that the wire, in particular the beginning of the wire, can be clamped or clamped between the holding element and the shoulder surface of the threaded pin.

The length of the stroke is determined in particular by the distance from the cover cap to the holding element.

The tool insert particularly preferably has at least one tension pin, the tension pin with the threaded element being provided as a second clamping device for the wire, in particular the wire end.

It can be provided that a second continuous receiving bore is provided parallel to the longitudinal axis of the threaded element, which extends through the threaded element and the holding element and is provided for receiving a section of the tension pin, the second receiving hole in a first, in particular head-side, section has first diameter, and wherein the second receiving bore in a second, in particular bottom, section has a second diameter that is larger than the first diameter, so that a heel surface is or is formed between the sections.

It can further be provided that the tension pin has a first diameter in a first section which is larger than the diameter of the second receiving bore in its first section and has a second diameter in a second section which is smaller than the diameter of the second receiving hole in its first section, a shoulder surface being or being formed at the transition between the first section and the second section of the tension pin, so that the second section of the tension pin can be pushed or pushed into the second receiving bore as far as the shoulder surface.

A spring is preferably arranged in the second section of the second mounting hole parallel to the longitudinal axis of the mounting hole, the spring partially enclosing the tension pin inserted into the second mounting hole, the spring in its relaxed state preferably being longer than the second section of the second mounting hole.

At its end adjacent to the second section, the traction pin can have a cover cap, which can be screwed on or plugged on, the spring being tensioned or tensionable between the cover cap and the heel surface of the second receiving bore.

The second section of the tension pin can be larger than the length of the second receiving bore by an intended length.

According to a particularly preferred embodiment variant of the invention, the tool insert has at least one second clamping device, the second clamping device being provided for clamping the wire, in particular the wire end, the second clamping device being provided by the traction pin, which is provided in the second receiving bore, and that Threaded element and is formed by the spring and the cover cap, wherein when a force is exerted against the spring force, the first section of the tension pin is pushed away from the thread element, so that a gap is formed between the thread element and the shoulder surface of the tension pin, the gap for receiving the wire, in particular of the wire end is provided, and wherein if the force is lost against the spring force, the shoulder surface of the tension pin is pressed against the threaded element, in particular the head side of the threaded element, such that the wire, in particular the wire end, between the threaded element, in particular e the head side of the threaded element, and heel surface of the tension pin can be clamped or clamped.

It can be provided that the tool insert has at least one, preferably two, fitting bores for positioning the tool insert in an injection molding tool, the fitting bores preferably being provided in the region of the legs of the holding element or in the region of the longitudinal ends of the bottom section of the U-shaped holding element.

It can further be provided that the tool insert has a fastening element, in particular a socket or a plug, for connection to a winding device, the fastening element preferably interacting with a corresponding receiving element of the winding device.

The fastening element is preferably arranged on the holding element such that the longitudinal axis of the fastening element corresponds to the axis of symmetry of the holding element.

The winding device according to the invention comprises a receiving element for receiving a tool insert and a feed device for a wire, the winding device having a drive unit with a drive shaft, the receiving element being provided at a first end of the drive shaft, the drive unit for generating a rotational movement of the drive shaft about its Longitudinal axis and for generating a feed movement of the drive shaft in the direction of its longitudinal axis.

The winding device is preferably provided for a system which is provided for producing a plastic part, in particular a plastic container, with a plurality of wire webs, in particular heating wires, running through the plastic part, the plastic part having at least one chamber, the wire webs in part passing through the chamber or the chambers run and, on the other hand, are integrated in sections in the plastic part.

According to a development of the invention, the winding device comprises a base plate, in particular with a stand base, the feed device and the receiving element being provided on a first side of the base plate.

The feed device preferably comprises a wire spool for receiving the wire, in particular a wire wound into a wire reel, and an axis, the wire spool being rotatably mounted on the axis, the axis being fastened to the base plate perpendicular to the base plate.

It can be provided that a spring is tensioned between the base plate, in particular a fastening nut of the base plate, and an outer surface of the wire coil facing the base plate, the spring being provided to provide a pre-tensioning of the wire by the spring pressing against the outer surface of the wire coil. so that the necessary rolling force from the wire spool is due to the spring force.

The winding device can have at least one deflection device, in particular a deflection roller, for guiding the wire from the feed device to the tool insert accommodated in the receiving element, the deflecting device preferably being provided on the same side of the base plate as the feeding device and the receiving element.

According to one embodiment variant, the deflection device is mounted on an axis, the axis being fastened to the base plate perpendicular to the base plate, the axis having a thread in sections, the axis being able to be screwed into the base plate and / or unscrewed from the base plate by means of the thread, so that the distance between the deflection device and the base plate is adjustable.

It can be provided that the drive shaft is arranged perpendicular to the base plate and is mounted in a threaded hole in the base plate.

It can further be provided that the drive unit comprises a crank for rotating the drive shaft, the crank being provided on a second end of the drive shaft opposite the first end. For example, the crank is provided on a second side of the base plate opposite the first side.

According to a development of the invention, the drive shaft has a thread, in particular a right-hand thread, the thread of the drive shaft corresponding to the thread of the threaded hole in the base plate, so that rotation of the drive shaft produces an, in particular negative, feed movement of the drive shaft perpendicular to the base plate with the receiving element being moved toward the first side of the base plate.

It can be provided that the feed device and the receiving element are each at a distance from the base plate, which is set such that a wire, in particular wound into a wire reel, is provided on the wire spool of the feed device and is fastened to the tool insert received by the receiving element runs in a plane parallel to the base plate. “Parallel” is also understood to mean “essentially parallel” or “largely parallel”.

Furthermore, it can be provided that the deflection device is at a distance from the base plate, which is set such that the wire guided through the deflection device from the feed device to the tool insert runs in a plane parallel to the base plate before the tool insert is wrapped with the wire.

The system according to the invention is intended for producing a plastic part, in particular a plastic container, with a plurality of wire paths, in particular heating wires, running through the plastic part, the plastic part having at least one chamber, the wire paths running in sections through the chamber or the chambers and for others are integrated in sections in the plastic part. Furthermore, the system according to the invention is provided in particular for carrying out a method according to the invention.

The system according to the invention is characterized in that the system comprises a tool insert according to the invention, and a winding device according to the invention, and an injection molding tool.

It is particularly preferably provided that the thread of the drive shaft of the winding device has the same thread pitch as the thread of the thread devices of the tool insert, the thread pitches having the opposite direction, so that the wire is wound into the thread of the tool insert by means of the feed movement of the drive shaft Threading devices sets.

It can be provided that the system comprises at least one robot, the robot for detaching the tool insert from the winding device and / or for inserting the tool insert with the wire wound around it into the injection mold and / or for removing the plastic part with the tool insert from the Injection mold is provided.

Furthermore, it can be provided that the injection mold has at least one cavity, with at least one, preferably two, holding pins in the cavity for positioning the tool insert in the cavity of the injection mold, the at least one holding pin of the injection mold corresponding to the at least one fitting bore of the tool insert.

The injection molding tool preferably has one cavity, but for example also a plurality of cavities, which specifies the intended shape of the plastic part, so that the wire webs are overmolded in such a way that the plastic part forms at least one chamber, the wire webs passing through the chamber in sections Chambers run and are also integrated in sections in the plastic part.

Furthermore, it can be provided that the system has a cutting device for cutting the wire wound around the tool insert to form a plurality of independent wire paths, the wire preferably cutting through the wire, in particular at or near the turning areas and / or at the edge of the plastic part so that the wire paths are separated from each other.

It can further be provided that the cutting device has means for cutting the sprue on the plastic part, in particular on the side of the plastic part.

The method according to the invention and the system according to the invention, the tool insert according to the invention and the winding device according to the invention are also explained in more detail below with regard to further features and advantages on the basis of the description of exemplary embodiments and with reference to the attached schematic drawings.

• 1 ein mit einem erfindungsgemäßen Verfahren und mit einem erfindungsgemäßen System hergestelltes Kunststoffteil mit mehreren durch das Kunststoffteil verlaufenden Drahtbahnen in einer schematischen, dreidimensionalen Darstellung;
• 2 einen erfindungsgemäßen Werkzeugeinleger in einer schematischen Schnittdarstellung;
• 3 einen Ausschnitt des erfindungsgemäßen Werkzeugeinlegers nach 2 in einer schematischen Schnittdarstellung;
• 4 einen Ausschnitt des erfindungsgemäßen Werkzeugeinlegers nach 2 in einer schematischen Schnittdarstellung;
• 5 eine erfindungsgemäße Wickelvorrichtung in einer schematischen, dreidimensionalen Darstellung;
• 6 einen Teil eines Spritzgießwerkzeugs eines erfindungsgemäßen Systems in einer schematischen Draufsicht.

Show

• 1 a schematic, three-dimensional representation of a plastic part produced with a method according to the invention and with a system according to the invention with a plurality of wire paths running through the plastic part;
• 2nd a tool insert according to the invention in a schematic sectional view;
• 3rd a section of the tool insert according to the invention 2nd in a schematic sectional view;
• 4th a section of the tool insert according to the invention 2nd in a schematic sectional view;
• 5 a winding device according to the invention in a schematic, three-dimensional representation;
• 6 a part of an injection mold of a system according to the invention in a schematic plan view.

The method according to the invention is for producing an in 1 shown plastic part designed as a plastic container 100 intended. The plastic part 100 includes how 1 shows several through the plastic part 100 running wire paths 101 , with each wire path 101 is a heating wire. The plastic part 100 also has several chambers 102 on, the wire tracks 101 partly through the chambers 102 run and on the other in sections in the plastic part 100 are integrated.

According to the inventive method in one step a ) a wire 200 , which is the wire 200 around a wire wound into a roll of wire 200 is a tool insert according to the invention 300 , a winding device according to the invention 400 , and an injection mold 500 provided.

The in 2nd illustrated tool insert 300 is as a tool insert for the injection mold 500 and provided for performing the method according to the invention. The tool insert 300 is also part of a system which is used to manufacture the plastic part 100 is provided with the inventive method.

The tool insert 300 comprises an elongated holding element 306 and two threading devices 305 for the provision of turning areas 301 for the wire 200 when winding, the threading devices 305 in the opposite end regions of the elongate holding element 306 are arranged. The first threading device 305 is as a grub screw 305a and the second thread device 305 as a threaded element 305b educated.

Both thread devices 305 each have an external thread for guiding the wire during winding, the thread pitch being the distance between the wire paths 101 when wrapping the tool insert 300 pretend. The thread pitch has twice the value of the intended wire spacing.

The holding element 306 is U-shaped, the thread devices 305 at the head ends of the legs 307 of the U-shaped holding element 306 and perpendicular to the longitudinal axis D of the holding element 306 are arranged.

The holding element 306 has two through holes 308 , 319 perpendicular to its longitudinal axis D on. A first of the two mounting holes 308 shows how 3rd shows, in a first, head-side, section 309 a first diameter, and in a second, bottom-side section 310 a second diameter that is larger than the first diameter, so that a heel area 311 between the sections 309 , 310 is trained.

The grub screw 305a points in a first section 312 a first diameter that is larger than the diameter of the first receiving bore 308 in their first section 309 , and in a second section 313 a second diameter that is smaller than the diameter of the first receiving bore 308 in their first section 309 , being at the transition between the first section 312 and second section 313 of the grub screw 305a a sales area 314 is formed so that the second section 313 of the grub screw 305a to the sales area 314 in the first mounting hole 308 of the holding element 306 can be introduced. The second section 313 of the grub screw 305a is an intended length greater than the length of the first mounting hole 308 .

How 3rd shows is in the second area 310 the first location hole 308 a feather 315 parallel to the longitudinal axis E the first location hole 308 arranged, the spring 315 in the first mounting hole 308 inserted threaded pin 305a sectionally encloses, the spring 315 in its relaxed state longer than the second area 310 the first location hole 308 is. The grub screw 305a points to the second section 313 adjacent end a cover cap 316 on, the spring 315 between the cover cap 316 in the first mounting hole 308 inserted threaded pin 305a and the sales area 311 the first location hole 308 is excited.

The tool insert 300 has a first clamping device 302 on, the first clamping device 302 for clamping the start of the wire 200 is provided.

The first clamping device 302 is through the grub screw 305a which is in the first mounting hole 308 is provided, and the holding element 306 as well as by the spring 315 and the cover cap 316 educated.

When a force is applied against the spring force, the first section 312 of the grub screw 305a from the holding element 306 pushed away so that a crack 317 between holding element 306 and sales area 314 of the grub screw 305a is formed, the gap 317 for receiving the start of the wire 200 is provided. The length of the stroke and thus the size of the gap 317 is determined by the distance from the cover cap 316 to holding element 306 certainly.

If the force against the spring force ceases, the sales area 314 of the grub screw 305a so against the retaining element 306 pressed that the wire start of the wire 200 between holding element 306 and sales area 314 of the grub screw 305a is pinched.

The tool insert 300 also has an in 4th illustrated pull pin 318 on, the pull pin 318 with the threaded element 305b as a second clamping device for the wire end of the wire 200 is provided.

How 4th shows is a second through hole 319 parallel to its longitudinal axis F of the threaded element 305b provided by the threaded element 305b and the holding element 306 extends. This is for receiving a section of the tension pin 318 provided, the second receiving bore 319 in a first section on the head side 320 has a first diameter, and wherein the second receiving bore 319 in a second, bottom-side section 321 has a second diameter that is larger than the first diameter, so that a heel area 322 between the sections 320 , 321 is trained.

The pull pin 318 points in a first section 323 a first diameter that is larger than the diameter of the second receiving bore 319 in their first section 320 , and in a second section 324 a second diameter that is smaller than the diameter of the second receiving bore 319 in their first section 320 , being at the transition between the first section 323 and second section 324 the pull pin 318 a sales area 325 is formed so that the second section 324 the pull pin 318 to the sales area 325 in the second mounting hole 319 can be inserted. The second section 324 the pull pin 318 is larger than the length of the second mounting hole by an intended length 319 .

In the second section 321 the second location hole 319 is a feather 326 parallel to the longitudinal axis G the second location hole 319 arranged, the spring 326 into the mounting hole 319 inserted pull pin 318 sectionally encloses, the spring 326 in its relaxed state, preferably longer than the second section 321 the mounting hole 319 is.

The pull pin 318 points to the second section 324 adjacent end a cover cap 327 on, the spring 326 between the cover cap 327 and the sales area 322 the second location hole 319 is excited.

The tool insert 300 has a second clamping device 303 on, the second clamping device 303 for clamping the wire end of the wire 200 is provided.

The second clamp 303 is through the pull pin 318 which is in the second mounting hole 319 is provided, and the threaded element 305b as well as by the spring 326 and the cover cap 327 educated.

When a force is applied against the spring force, the first section 323 the pull pin 318 from the threaded element 305b pushed away so that a crack 328 between threaded element 305b and sales area 325 the pull pin 318 is formed, the gap 328 for receiving the wire end of the wire 200 is provided.

If the force against the spring force ceases, the sales area 325 the pull pin 318 so against the head side of the threaded element 305b pressed that the wire end of the wire 200 between the head side of the threaded element 305b and the sales area 325 the pull pin 318 is pinched.

The tool insert 300 has two fitting holes 304 for positioning the tool insert 300 in the injection mold 500 on, the fitting holes 304 in the area of the thighs 307 of the holding element 306 are provided.

Furthermore, the tool insert 300 a fastener 329 for connection to a winding device 400 on, the fastener 329 with a corresponding receiving element 402 the winding device 400 cooperates.

The fastener 329 is so on the holding element 306 arranged that the longitudinal axis of the fastener 329 the axis of symmetry of the holding element 306 corresponds.

5 shows a winding device according to the invention 400 to carry out the method according to the invention. The winding device 400 comprises a receiving element 402 for receiving the tool insert according to the invention 300 and a feeder 401 for the wire 200 . Furthermore, the winding device 400 a drive unit 404 with a drive shaft 403 on, the receiving element 402 at a first end 406 the drive shaft 403 is provided.

The drive unit 404 is for generating a rotational movement B the drive shaft 403 about its longitudinal axis A and to generate a feed movement C. the drive shaft 403 in the direction of its longitudinal axis A educated.

The winding device 400 includes a base plate 407 with a pedestal 408 , wherein the feeder 401 and the receiving element 402 on a first side of the base plate 407 are provided.

The feeder 401 includes a wire spool 409 for taking up the wire wound into a wire reel 200 and an axis 410 , the wire spool 409 rotatable on the axis 410 is stored. The axis 410 is perpendicular to the base plate 407 on the base plate 407 attached.

Between the base plate 407 , especially a mounting nut of the axle 410 on the base plate, and an outer surface of the wire coil facing the base plate 409 is a feather 411 cocked, the spring 411 to provide a pre-tension of the wire 200 is provided by the spring 411 against the outer surface of the Wire spool 409 presses so that the necessary unwinding force of the wire spool 409 is caused by the spring force.

The winding device 400 also has a deflection device designed as a deflection roller 412 for guiding the wire 200 from the feeder 401 to in the receiving element 402 recorded tool insert 300 on, the deflection device 412 on the same side of the base plate 407 like the feeder 401 and the receiving element 402 is provided.

The deflection device 412 is on one axis 413 stored, the axis 413 perpendicular to the base plate 407 on the base plate 407 is attached. The axis 413 has a thread in sections, the axis 413 by means of the thread in a corresponding threaded hole in the base plate 407 can be screwed in or screwed out, so that the distance between the deflection device 412 and base plate 407 is adjustable.

The drive shaft 403 is perpendicular to the base plate 407 arranged, and in a continuous threaded bore 415 the base plate 407 stored.

The drive unit further comprises 404 a crank 405 for rotating the drive shaft 403 , the crank 405 at a second the first end 406 opposite end 414 the drive shaft 403 is provided.

The drive shaft 403 has a right hand thread, the thread of the drive shaft 403 with the thread of the threaded hole 415 the base plate 407 corresponds, so that by rotating the drive shaft 403 a negative feed movement C. the drive shaft 403 perpendicular to the base plate 407 is generated, the receiving element 402 to the first side of the base plate 407 is moved there.

The feeder 401 , the receiving element 402 and the deflection device 412 are each at a distance from the base plate 407 which is set so that a wire 200 which is on the wire spool 409 the feeder 401 is provided on the deflection device 412 is guided and on the receiving element 402 recorded tool insert 300 is attached in a plane parallel to the base plate 407 runs before the tool insert 300 with the wire 200 is wrapped or before winding the wire 200 around the tool insert 300 is started. Parallel is also understood to be essentially or at least largely parallel.

After providing the tool insert according to the invention described above 300 , the winding device according to the invention also described above 400 , one in 6 shown injection mold 500 as well as a wire 200 becomes the wire wound into a roll of wire 200 for connection to the winding device 400 on the feeder 401 the winding device 400 provided by the wire reel on the wire spool 409 the feeder 401 is provided, the wire 200 by means of the feed device 401 can be unwound from the wire roll.

Then in one step b ) the tool insert 300 with the winding device 400 connected. For this, the tool insert 300 in a receiving element 402 the winding device 400 added, the receiving element 402 on a drive shaft 403 the drive unit 404 the winding device 400 is provided so that with the receiving element 402 connected tool inserts 300 for wrapping with the wire 200 through the drive unit 404 can be rotated.

Below is one step c ) the beginning of the wire 200 with the tool insert 300 connected. The beginning of the wire is used for connection 200 by means of the first clamping device 302 of the tool insert 300 on the tool insert 300 attached.

The wire 200 can also be used with the tool insert 300 be connected before the tool insert 300 with the winding device 400 is connected.

The tool insert 300 has two opposite turning areas 301 on. As turning areas 301 the areas of the tool insert 300 , in particular the outside of the thread devices 305 of the tool insert 300 , viewed in which the wire 200 when winding it turns its direction by 180 ° or in which the wire 200 is bent by 180 °.

In one step d ) becomes the wire 200 by means of the winding device 400 around the tool insert 300 wrapped, so that between the two opposite turning areas 301 of the tool insert 300 several wire tracks 101 surrender. The tool insert 300 this is done by means of the drive unit 404 is set in rotation. The drive unit 404 the winding device 400 is done manually using the crank 405 operated, for example, an automated drive is also possible.

Also generated at step d ) the drive unit 404 due to the right-hand thread of the drive shaft 403 and the corresponding thread the threaded hole 415 the base plate 407 during the rotational movement B the drive shaft 403 a feed motion C. the drive shaft 403 in the direction of its longitudinal axis A towards the first side of the base plate 407 so the wire tracks 101 at a distance from each other around the tool insert 300 and into the external thread of the thread devices 305 be wrapped.

The thread of the drive shaft 403 the winding device 400 has the same thread pitch as the external thread of the thread devices 305 of the tool insert 300 with the thread pitches facing in the opposite direction so that the wire 200 when wrapping around the tool insert 300 by means of the feed movement C. the drive shaft 403 exactly in the external thread of the thread devices 305 sets.

After step d ) is used to attach the wire end of the wire 200 on the tool insert 300 the wire end by means of the second clamping device 303 of the tool insert 300 with the tool insert 300 connected. In this way, tension on the wire paths is maintained.

After attaching the wire end of the wire 200 on the tool insert 300 becomes the tool insert 300 from the winding device 400 solved by the tool insert 300 from the cradle 402 of the winding device 400 is removed.

Now there is a tool insert 300 before which the wire 200 in several wire tracks 101 which are (still) connected to each other. The wire tracks 101 are in two parallel planes, each between the two turning areas 301 of the tool insert 300 extend, arranged. The turning areas 301 are each on the thread devices 305 of the tool insert 300 arranged. From the two levels of the wire tracks 101 there is therefore one on the front and one on the back of the tool insert 300 . With a planned number of wire paths 101 there is half the number of wire paths in one level at the front of the tool insert 300 and the other half of the wire tracks 101 in one level at the back of the tool insert. The wire tracks 101 one level of wire tracks 101 are arranged side by side or on top of each other (depending on the viewing angle) and without contact. The distance between the two parallel planes is due to the outside diameter of the thread devices 305 certainly. The distance of the wire paths 101 to each other in the plane is due to the thread pitch of the external thread of the thread devices 305 certainly.

Then, according to one step e ) the one with the wire 200 wrapped tool insert 300 into the injection mold 500 inserted. The tool insert 300 is done by means of the two fitting holes 304 in the tool insert 300 and two corresponding locating pens 501 in the cavity of the injection mold 500 a perfect fit in the injection mold 500 positioned.

When closing the injection mold 500 become the two levels of wire paths 101 through the upper and lower mold of the injection mold 500 compressed so that the wire tracks 101 then lie on one level. Adjacent wire runs 101 the plane on the front and on the back of the tool insert 300 each have a distance between a thread pitch, so that the wire paths 101 after they have been merged into one plane, are spaced apart by half a thread pitch. So the wire tracks are 101 even after squeezing in a plane parallel to each other and arranged without contact.

In a step f), the wire tracks 101 for the formation of the plastic part 100 overmolded with plastic in such a way that the plastic part 100 several chambers 102 trains, the wire paths 101 partly through the chambers 102 run and in sections in the plastic part 100 be integrated, especially in the area of the webs between the chambers 102 .

Around the wire tracks 101 overmolded so that the plastic part 100 several chambers 102 trains, the wire paths 101 partly through the chambers 102 run and in sections in the plastic part 100 will be integrated into 6 Injection molding tool shown provided, which has a cavity that specifies the intended shape.

After overmolding the wire runs 101 becomes the plastic part 100 together with the tool insert 300 from the injection mold 500 taken. Subsequently, tool inserts 300 and plastic part 100 be separated from each other.

Below is the plastic part 100 a cutting device (not shown in the figures) is fed, with the cutting device using the wire 200 on the edge of the plastic part 100 is cut so that the wire tracks 101 be separated from each other and thus separate wire paths 101 are available.

Furthermore, it can be provided that the sprue in the cutting device laterally on the plastic part 100 is cut off.

After cutting the wire 200 can further punching and / or cutting processes to remove excess plastic and / or excess wire 200 be performed.

All steps involved in transporting the tool insert 300 and / or the plastic part 100 can be carried out manually or using one or more robots.

It can be provided that a quality control is carried out as the final step.

It can also be provided that the plastic part 100 with the integrated wire tracks 101 , for example after a quality control, is fed to a packaging process.

Reference symbol list

100

Plastic part

101

Wire path

102

chamber

200

wire

300

Tool insert

301

Turning point

302

first clamping device

303

second clamping device

304

Fitting hole

305

Threading device

305a

Grub screw

305b

Threaded element

306

Holding element

307

leg

308

first location hole

309

first section of the locating hole

310

second section of the locating hole

311

Sales area

312

first section of the grub screw

313

second section of the grub screw

314

Sales area

315

feather

316

Cover cap

317

gap

318

Pull pin

319

second location hole

320

first section of the locating hole

321

second section of the locating hole

322

Sales area

323

first section of the pull pin

324

second section of the pull pin

325

Sales area

326

feather

327

Cover cap

328

gap

329

Fastener

400

Winding device

401

Feeding device

402

Receiving element

403

drive shaft

404

Drive unit

405

crank

406

first end

407

Base plate

408

Stand base

409

Wire spool

410

axis

411

feather

412

Deflection device

413

axis

414

second end

415

Tapped hole

500

Injection mold

501

Pen

A

Longitudinal axis of the drive shaft

B

Rotational movement of the drive shaft

C.

Feed movement of the drive shaft

D

Longitudinal axis of the holding element

E

Longitudinal axis of the location hole

F

Longitudinal axis of the grub screw

G

Longitudinal axis of the location hole

Claims (32)

Method for producing a plastic part (100) with several through the plastic part (100) extending wire paths (101), the plastic part (100) having at least one chamber (102), the wire paths (101) running in sections through the chamber or the chambers (102) and integrated in sections in the plastic part (100) The method comprises the steps: a) providing a wire (200), a tool insert (300), a winding device (400), and an injection mold (500), b) connecting the tool insert (300) to the winding device (400 ), c) connecting the wire (200) to the tool insert (300), the tool insert (300) having two opposite turning areas (301), d) winding the wire (200) by means of the winding device (400) around the tool insert ( 300), so that there are several wire paths (101) between the two opposite turning areas (301) of the tool insert (300), e) inserting the tool insert (300) wrapped with the wire (200) in the injection molding tool (500), f) overmolding the wire webs (101) with plastic to form the plastic part (100) in such a way that the plastic part (100) forms at least one chamber (102), the wire webs (101) on the one hand through the Chamber or the chambers (102) run and on the other hand are integrated in sections in the plastic part (100). Procedure according to Claim 1 , characterized in that in step a) the wire (200) is provided as a wire roll, and in a further step the wire roll is provided for connection to the winding device (400) on a feed device (401) of the winding device (400), wherein the wire (200) can be unwound from the wire roll by means of the feed device (401). Procedure according to Claim 1 or 2nd , characterized in that in step b) the tool insert (300) is received in a receiving element (402) of the winding device (400), the receiving element (402) on a drive shaft (403) of a drive unit (404) of the winding device (400) is provided so that the tool insert (300) connected to the receiving element (402) can be set in rotation by the drive unit (404) for wrapping around the wire (200). Method according to one of the preceding claims, characterized in that in step c) for connecting the wire (200) to the tool insert (300), the wire is connected to the tool insert (300) by means of a first clamping device (302) of the tool insert (300) . Procedure according to Claim 3 , characterized in that in step d) the tool insert (300) is set in rotation by means of the drive unit (404), so that the wire (200) is wound around the tool insert (300) in a plurality of wire paths (101). Procedure according to Claim 5 , characterized in that in step d) the drive unit (404), in particular during the rotational movement (B) of the drive shaft (403), generates a feed movement (C) of the drive shaft (403) in the direction of its longitudinal axis (A), so that the Wire paths (101) are wound at a distance from one another around the tool insert (300). Method according to one of the preceding claims, characterized in that after step d) for fastening the wire (200) to the tool insert (300), the wire (200) by means of a second clamping device (303) of the tool insert (300) with the tool insert (300) is connected. Tool insert (300) for an injection molding tool (500), in particular for carrying out a method according to one of the Claims 1 to 7 , characterized in that the tool insert (300) comprises a holding element (306) and two threaded devices (305) for providing turning areas (301) for the wire (200) during winding, the threaded devices (305) in the opposite end regions of the Holding element (306) are arranged, wherein a first thread device (305) is designed as a threaded pin (305a) and a second thread device (305) as a threaded element (305b), both thread devices (305) having an external thread for guiding the wire during winding, the Thread pitch specifies the distance between the wire paths (101) when wrapping the tool insert (300). Tool insert after Claim 8 , characterized in that the holding element (306) is U-shaped, the threaded devices (305) being arranged on the legs (307) of the U-shaped holding element (306) and perpendicular to the longitudinal axis (D) of the holding element (306) . Tool insert after Claim 8 or 9 , characterized in that the holding element (306) has two continuous receiving bores (308, 319) perpendicular to its longitudinal axis (D), a first receiving bore (308) being provided for receiving a section of the threaded pin (305a), the first exception bore (308) in a first section (309) has a first diameter, and wherein the first receiving bore (308) in a second section (310) has a second diameter that is larger than the first diameter, so that a shoulder surface (311) is or is formed between the sections (309; 310). Tool insert after Claim 10 characterized in that the set screw (305a) has a first diameter in a first section (312) which is larger than the diameter of the first receiving bore (308) in its first section (309), and in a second section (313) has a second diameter which is smaller than the diameter of the first receiving bore (308a) in its first section (309), a shoulder surface (314) at the transition between the first section (312) and the second section (313) of the threaded pin (305) is or is formed so that the second section (313) of the threaded pin (305a) can be inserted or introduced into the first receiving bore (308) of the holding element (306) up to the shoulder surface (314). Tool insert after Claim 11 , characterized in that in the second area (310) of the first receiving bore (308) a spring (315) is arranged parallel to the longitudinal axis (E) of the first receiving bore (308), the spring (315) being inserted into the first receiving bore (308 ) partially inserted set screw (305a). Tool insert after Claim 12 , characterized in that the threaded pin (305a) has a cover cap (316) at its end adjoining the second section (313), the spring (315) between the cover cap (316) of the threaded pin inserted into the first receiving bore (308) (305a) and the shoulder surface (311) of the first receiving bore (308) is tensioned or can be tensioned. Tool insert according to one of the Claims 11 to 13 , characterized in that the second section (313) of the threaded pin (305a) is larger than the length of the first receiving bore (308) by an intended length. Tool insert according to the Claims 8 to 14 , characterized in that the tool insert (300) has at least one first clamping device (302), the clamping device (302) being provided for clamping the wire (200), the first clamping device (302) by the threaded pin (305a) which is provided in the first receiving bore (308), and the holding element (306) and the spring (315) and the cover cap (316) are formed, the first section (312) of the threaded pin (305a ) is pushed away from the holding element (306) or can be pushed away, so that a gap (317) is formed between the holding element (306) and the shoulder surface (314) of the threaded pin (305a), the gap (317) for receiving the wire (200) is provided, and wherein if the force is lost against the spring force, the shoulder surface (314) of the threaded pin (305a) is pressed against the holding element (306), such that the wire (200) between the holding element (306) and the shoulder surface (314) of the Grub screw (305a) can be clamped or clamped. Tool insert according to one of the Claims 8 to 15 , characterized in that the tool insert (300) has at least one pull pin (318), the pull pin (318) with the threaded element (305b) being provided as the second clamping device (303) for the wire (200). Tool insert after Claim 16 , characterized in that a second continuous receiving bore (319) is provided parallel to the longitudinal axis (F) of the threaded element (305b), which extends through the threaded element (305b) and the holding element (306) and for receiving a section of the tension pin (318 ) is provided, wherein the second receiving bore (319) has a first diameter in a first section (320), and wherein the second receiving bore (319) has a second diameter in a second section (321) that is larger than the first diameter , so that a heel surface (322) is or is formed between the sections (320; 321). Tool insert after Claim 17 characterized in that the pull pin (318) has a first diameter in a first section (323) which is larger than the diameter of the second receiving bore (319) in its first section (320), and in a second section (324) has a second diameter which is smaller than the diameter of the second receiving bore (319) in its first section (320), a shoulder area (325) at the transition between the first section (323) and the second section (324) of the tension pin (318) is or is formed so that the second section (324) of the first pull pin (318) can be pushed or pushed into the second receiving bore (319) up to the shoulder surface (325). Tool insert after Claim 17 or 18th characterized in that in the second section (321) of the second receiving bore (319) a spring (326) is arranged parallel to the longitudinal axis (G) of the receiving bore (319), the spring (326) passing into the second receiving bore (319) inserted traction pin (318) encloses in sections. Tool insert after Claim 19 , characterized in that the pull pin (318) has a cover cap (327) at its end adjacent to the second section (324), the spring (326) between the cover cap (327) and the shoulder surface (322) of the second receiving bore ( 319) is tense or tense. Tool insert according to one of the Claims 18 to 20th , characterized in that the second section (324) of the tension pin (318) is larger than the length of the second receiving bore (319) by an intended length. Tool insert according to the Claims 16 to 21st , characterized in that the tool insert (300) has at least one second clamping device (303), the second clamping device (303) being provided for clamping the wire (200), the second clamping device (303) by the traction pin (318), which is provided in the second receiving bore (319), and the threaded element (305b) as well as the spring (326) and the cover cap (327) is formed, the first section (323) of the tension pin () 318) is pressed away from the threaded element (305b), so that a gap (328) is formed between the threaded element (305b) and the shoulder surface (325) of the tension pin (318), the gap (328) being provided for receiving the wire (200) , and if the force is lost against the spring force, the shoulder surface (325) of the tension pin (318) is pressed against the threaded element (305b) such that the wire (200) between the thread element (305b) and the shoulder surface (325) of the tension pin ( 318) can be pinched or pinched. Winding device (400), in particular for carrying out a method according to one of the Claims 1 to 7 , characterized in that the winding device (400) comprises a receiving element (402) for receiving a tool insert (300) and a feed device (401) for a wire (200), the winding device (400) comprising a drive unit (404) with a drive shaft (403), the receiving element (402) being provided at a first end (406) of the drive shaft (403), the drive unit (404) for generating a rotational movement (B) of the drive shaft (403) about its longitudinal axis (A) and is designed to generate a feed movement (C) of the drive shaft (403) in the direction of its longitudinal axis (A). Winding device after Claim 23 , characterized in that the winding device (400) comprises a base plate (407), the feed device (401) and the receiving element (402) being provided on a first side of the base plate (407). Winding device after Claim 24 , characterized in that the feed device (401) comprises a wire spool (409) for receiving the wire (200), in particular a wire wound into a wire reel, and an axis (410), the wire spool (409) being rotatable on the axis ( 410) is mounted, the axis (410) being fastened to the base plate (407) perpendicular to the base plate (407). Winding device according to one of the Claims 23 to 25th , characterized in that the winding device (400) has at least one deflection device (412) for guiding the wire (200) from the feed device (401) to the tool insert (300) received in the receiving element (402). Winding device after Claim 24 and 26 , characterized in that the deflection device (412) is mounted on an axis (413), the axis (413) being fastened to the base plate (407) perpendicular to the base plate (407), the axis (413) having a thread in sections The axis (413) can be screwed into the base plate (407) by means of the thread and / or can be screwed out of the base plate (407), so that the distance between the deflection device (412) and the base plate (407) can be adjusted. Winding device according to one of the Claims 23 to 27th , characterized in that the drive shaft (403) is arranged perpendicular to the base plate (407) and is mounted in a threaded bore (415) of the base plate (407). Winding device after Claim 28 , characterized in that the drive shaft (403) has a thread, the thread of the drive shaft (403) corresponding to the thread of the threaded bore (415) of the base plate (407), so that a rotation of the drive shaft (403) causes a feed movement ( C) of the drive shaft (403) is generated perpendicular to the base plate (407), the receiving element (402) being moved toward the first side of the base plate (407). Winder according to the Claims 23 to 29 , characterized in that the feed device (401) and the receiving element (402) are each at a distance from the base plate (407), which is set such that a wire (200) connected to the wire spool (409) of the feed device (401) is provided and fastened to the tool insert (300) received by the receiving element (402) and runs in one plane parallel to the base plate (407). System for producing a plastic part (100) with several through the plastic part (100) running wire paths (101), the plastic part (100) having at least one chamber (102), the wire paths (101) running in sections through the chamber or the chambers (102) and being integrated in sections in the plastic part (100) , and in particular to carry out a method according to one of the Claims 1 to 7 , characterized in that the system comprises a tool insert (300) according to one of the Claims 8 to 22 , and a winding device (400) according to one of the Claims 23 to 30th , and an injection mold (500). System according to Claim 31 , characterized in that the thread of the drive shaft (403) of the winding device (400) has the same thread pitch as the thread of the thread devices (305) of the tool insert (300), the thread pitches being in the opposite direction so that the wire (200) turns when winding around the tool insert (300) by means of the feed movement (C) of the drive shaft (403) in the thread of the thread devices (305).

Images