DE10322060A1 - Mouldings are formed using a mould composed of two halves, a mould insert which is located in a receiving hole, and a filling station for bristles - Google Patents

Abstract

A process for producing mouldings comprises using a mould composed of two halves. At least one mould half (2,3) or part of a mould region (4,4a) is made of the injection moulding material, and an insert (7) is located in the mould. The insert is placed in a receiving hole. The mouldings have holes for bundles (10) of bristles, and the latter are supplied at a filling station. At least one of the bristle bundle receiving holes (9a,9b) has a cross section which is larger than that of a bundle, and the hole separating wall (23) divides up the hole.

Description

The The invention relates to a method for producing molded parts in a mold cavity a mold halves with mold-forming areas, also referring to the invention on an injection mold with mold-forming areas having mold halves and one using them Device and the process as a molded article produced.

In injection molding technology are usually the mold-forming areas in the mold halves formed by mold cavities, from the respective mold half or a form plate consisting of high quality tool steel, have to be worked out.

It For this purpose, cutting processes such as shaping, milling, grinding, but also ablation processes how EDM processes are used and eventually the surfaces the shape-forming areas are polished.

Except machine Procedures are not insignificant, manual rework required so that overall a high expenditure of time and costs is required is.

Just in the case of multiple molds, the number of mold nests multiplies accordingly the effort for their production. A molded plate with for example, only four partial cavities already cause costs of several thousand euros. In the case of multiple molds, 38 of this mold plate can, for example be necessary, so that a correspondingly high cost and time expenditure is available.

The cavities to be incorporated not only requires a high manufacturing effort due to their number, but also through the required precision with which each one cavity with regard to the shape and also with regard to the location of the individual cavity made within the mold halves must become. It must be taken into account that all cavities have to be the same on the one hand a high accuracy of fit with that to form a cavity in the opposite mold existing cavity to achieve and on the other hand qualitatively the same in all mold cavities and to be able to produce good products straight away.

task The present invention is a method of manufacturing of moldings, one for that suitable injection mold as well as to create molded parts as moldings, one considerable time and cost savings in the production can be possible should at the same time high product quality.

to solution this object is achieved with regard to the method according to the invention suggested that first at least one mold half or at least part of a shape-forming area of a mold half injection molding material manufactured and this part is connected to the associated mold half and that then the molding is injected with this mold.

Regarding of the injection mold according to the invention it is proposed that at least a part of the mold halves in an injection molded part in a shape-forming area.

The shape-forming area, i.e. an area located in a mold half a cavity or a partial cavity is according to the invention by a injection molded formed in which the cavity or partial cavity located. With that opened yourself the opportunity to produce the shape-forming area by injection molding, but what only requires the production of an injection mold with a single mold cavity. The manufacturing effort, especially for multiple forms, is thereby drastically reduced because by providing an appropriate Number of quickly and precisely to manufacture, a cavity or a partial cavity having injection molded parts, a multiple mold can also be completed quickly and easily with such mold inserts can.

at a brush as an injection molding, this also has a particularly advantageous effect from when the cross section of the bristle bundle holes from the normal, round one Form deviates and the bristle bundle holes for example triangular, crescent-shaped or striped are shaped. This shape can otherwise only be done with great effort incorporated into the previous insert plates made of tool steel become. By using injection molded insert parts reduce the effort considerably and manufacture using injection molding technology simple and repeatable and very precise.

Conveniently, is at least in a mold half in at least one shape-forming area an insert which the at least one shape-forming area or a partial area of which and is itself made of injection molding material.

This or these insert parts formed by injection mold parts are expediently placed in insertion openings or receiving cavities in the Form plate used.

It it is possible, leave the insert in the mold plate until about its wear limit is reached. It can then be ejected and replaced by a new insert be replaced.

It can also be an insert with more than one shape-forming area, preferably a plurality of shape-forming elements located directly next to one another Areas are used. This is particularly the case with multiple forms with comparatively close together nests appropriate.

There it is by injection molding manufactured insert part is a cheap "disposable part", it can after spraying of an injection molding and, if necessary, the manufacturing process for spraying insert parts.

Farther the insert can be coherent with the after the injection of a molding Sprinkling can be ejected as a unit.

Thereby open yourself the opportunity certain areas of the finished molding through the associated Cover the insert and the molding at least in one area before access or against damage to protect. For one Use of the molded body formed by the molding can the associated insert, which covers it in some areas, is removed become.

is the spritz a brush, the shaping insert is expediently at least in the area a bristle field inserted into a mold half, with receiving holes for at least one Part of the bristle bundle are provided.

The Insert can be equipped with bundles of bristles and inserted before being inserted into a mold half subsequently in one half of the mold be used.

Also there is the possibility that the insert part first by injection molding manufactured, then a bristle bundle filling station supplied after filling inserted into the mold and after the injection molding is ejected.

The Ejected or removed insert can be in a rotating Process first for example on a carousel having a filling station with bundles of bristles be populated then brought to a mold plate and inserted there in a corresponding opening become. After demoulding the insert parts again the carousel and the filling station supplied become. It is possible, to repeat this circulation process several times.

on the other hand can the insert parts after the injection molding of the molding connected to it over the latter Bristle field stay connected and are together with the molding ejected as a unit. The insert part then forms a brush or same shaped body separable enveloping body at least in regions with the same contour as protective covering and / or tamper evidence.

For the user the brush it is clearly recognizable that the brush is "originally packed" and therefore unused but also in the period between production and first use at least in the covered the envelope Area is untouched. This is a very important one, especially for hygiene articles such as toothbrushes Aspect.

The from the molded body (for example brush, toothbrush) separable Envelope envelops the moldings preferably at least in the area of the bristle field.

The from the molded body Removable tamper evident envelopes holes for in this engaging bundles of bristles on, with the molded body and the separable envelope the in the receiving holes engaging bristle bundle are separably connected to each other, it is useful if the in the tamper-evident envelope holes for the bristle bundle as blind holes are trained.

The "critical" area of the brush, namely its Bristle field is protected until use and hygienic inside of the tamper-evident envelope and the user can then remove the envelope from the Pull off the bristle field. The user can be certain that the toothbrush from production to the end user on their bristle field not by other hands touched has been.

There a subsequent one Put on the envelope the bristle field because of the somewhat spreading bristle ends not possible anymore is a tamper-evident seal that cannot be manipulated in practice.

It is also advantageous that the bristle bundles are held in parallel until they are peeled off, so that the penetration of dirt particles is excluded and, in addition, spreading of the ends of the bundle is avoided even before use, so that the impression of originality is avoided User is still underlined.

To In one embodiment of the invention, the one that can be separated from the molded body Envelope the shaped body about half-sided up to its origin from the parting plane during spraying, encircling separation point. With a brush this would be useful the side with the bristle field, so that only the brush back area would be free.

It but there is also the possibility that the separable from the molded body Envelope at least is formed in two parts and the molded body on several sides, if necessary practically complete wrapped and that the envelope body parts in the area of spraying circumferential separation point are separated from each other.

The moldings thus remains in the two half-shell-shaped envelope parts after its production, which not only form a degree of originality, but also also replace a complete packaging of the molded body.

The the molded body enveloping, removable envelope parts can with each other via predetermined separation points be connected and it can Griffin approaches or recesses for the manual separation of the parts from the molded body be provided to the envelope body parts before using the one formed, for example, by a (tooth) brush Easy to remove molded part.

The Insert made of injection molding material can through holes for bristle bundles, so this from the outside forth can be used in the insert.

If instead of the through holes blind holes are provided, on the one hand, is advantageous in that a tight Conclusion to the outside is formed, among other things, the penetration of spray material in the bristle bundle area is avoided. On the other hand, you can for positioning the bristle bundles to form a predefinable user surface (topography) of the bristle field, the blind holes positioned in the insert with the user interface Hole grounds trained his.

Thereby results from the insertion of the bristle bundles up to on the respective hole base, one corresponding to the positions of the hole bases, complementary Contouring the use side of the bristle field.

To In a further development of the invention, the shaping, receiving holes for bristle bundles can Insert after assembly with bundles of bristles elastic during or after insertion into a receiving opening of the mold half for reducing the cross-section of the bristle bundle receiving openings be deformed.

It have been many measures provided to over-splash in the exit area of the bristle bundle out of the brush body too avoid. What they all have in common is that they are cumbersome and a comparative one require great effort.

By the use of the invention an insert made of injection molding material can at least most of the spraying materials used use their elasticity to the cross section of the bristle bundle receiving openings while of the spraying process so that penetration of spray material in the transition area between brush body and bristle bundles is avoided. Moreover become the bristle bundle thereby better kept.

The Can deform the receiving openings be provided by different mechanical measures.

For example can as a means of narrowing the receiving holes for the bristle bundles in the area a receiving cavity in a mold half or an insert plate at least one pressure element for loading of the insert part transverse to the longitudinal extension the receiving holes be provided.

Farther can be one in a mold half or an insert plate provided receiving cavity and / or the insert part be conical at least in some areas. When inserting the one with bundles of bristles stocked Insert part in a receiving cavity a mold half takes place through the conical area during the insertion of the insert a compression of the entire insert part transverse to the longitudinal extent the receiving holes and thus compressing and reducing the size of the bristle bundle holes appropriate sealing. Thus, in a particularly simple way the bristle bundles are compacted and held securely for the spraying process.

additional Embodiments of the invention are listed in the further subclaims. below is the invention with its essential details based on the Drawings even closer explained.

It shows:

1 a side view of an injection molding mold with a mold cavity formed between mold halves and an inserted part,

2 a side view of an injection mold with multiple molds according to 1 .

3 to 5 different views of an insert part with receiving holes for bristle bundles,

6 2 shows a side view of a toothbrush with the enveloping body which surrounds the bristle field and is formed by an insert,

7 2 shows a side view of an insert part with bristle bundles inserted therein and connected at the rear,

8th 2 shows a partial side view of a toothbrush with an envelope body present in the head area as a tamper-evident seal,

9 2 shows a partial side view of a toothbrush with the removable bristle body enveloping the bristle field,

10 a modified embodiment of an insert or enveloping body that almost completely envelops a brush head,

11 an end view of the in 10 insert or envelope shown,

12 a side view of an insert or enveloping body with through holes for bristle bundles and an end cover and

13 a top view of an insert for the area of a bristle field with partially strip-shaped receiving holes divided by partitions.

One in 1 shown injection mold 1 has two mold halves 2 . 3 with form-forming areas 4 on. The form-forming areas 4 of the two mold halves 2 and 3 form a mold cavity when the mold is closed 5 , is injected into the spray material to form a shaped body, in the present case a toothbrush. The two can be demolded in the area of a parting plane 6 superimposed mold halves 2 . 3 move apart so that the molded part or molded body can be removed.

2 shows an injection mold 100 with two injection molds used in it 1 according to 1 ,

According to the invention it is provided that at least part of the mold halves 2 or 3 is an injection molded part itself in a shape-forming area. In the exemplary embodiment shown, this injection molded part with the shape-forming (partial) area is an insert part 7 (compare also 3 to 5 ) that in a receiving cavity 8th one half of the mold 3 can be used. In the embodiment shown with a mold cavity 5 for a toothbrush is the insert 7 used in the area of a bristle field and has receiving holes 9 for bristle bundles. The side of the insert facing the later brush body 7 forms a shape-forming area in the present case. In the receiving holes designed as blind holes 9 become bristle bundles in the so-called in-mold process 10 used with their fastening ends 11 protrude into the subsequent mold cavity and overmolded during the injection molding process and thus with the brush body 12 be connected (compare also 6 ).

The 3 to 5 show different views of an insert 7 with receiving holes 9 for bristle bundles 10 where the receiving holes are designed as through holes. In the 3 and 5 is clearly visible that part of the receiving holes 9 are strip-shaped.

The insert part 7 is itself an injection molded part made of a material that does not form a connection with the injection material of the respective molded part, in this case the toothbrush. The injection molding material of the insert 7 expediently has a higher melting point than the material for the actual molding, the cooling measures provided for the melting temperature difference and the heat dissipation by contact with the respective mold half into which the insert part is inserted 7 is used, must be taken into account. A thermoplastic is preferably used, but there is also the possibility of using metal or metal-plastic mixtures as injection molding material for the insert 7 provided.

The insert part according to the invention 7 Injection molding material is preferred wherever complex shapes serve as shape-forming areas 4 of the molding are provided. Thus, these complicated, shape-forming areas do not have to be worked out individually from a molding plate or an insert plate used there, but only one of the outer contours of the insert part 7 corresponding cavity 8th into which the injection molding insert 7 is used. Particularly in the case of multiple molds, in which many molded parts are produced at the same time in one injection molding process, the use of the insert parts makes production much more economical 7 possible.

These can be quickly produced in sufficient numbers by injection molding in an injection mold and the injection mold for producing the toothbrushes or the like is then molded with these insert parts 7 stocked. The insert parts 7 can in the injection mold 1 remain until their wear limit is reached. You can then insert new injection molding parts 7 be replaced.

There is also the possibility of insert parts 7 outside the injection mold 1 with bundles of bristles 10 to be filled, then into the receiving cavity 8th one half of the mold 3 insert and after the spraying process and the ejection of the finished molding again a filling station for re-loading with brush bundles 10 supply. As a result, a corresponding number of insert parts can be used outside the injection mold during the injection molding process 7 with bundles of bristles 10 equipped and kept ready for insertion into the injection mold.

The insert parts 7 can, as mentioned above, be used in a circuit between a bristle bundle filling station and the injection mold.

On the other hand, the insert parts 7 but also after their manufacture the bristle bundle filling station, then fed to the injection mold and these insert parts 7 can then be ejected as "disposable insert parts". These insert parts can then be used for material recycling in the manufacturing process for injection molded insert parts 7 are fed.

It is preferably provided that the insert part 7 after use as a shaping insert within the injection mold, is ejected together with the injection molding and thereby forms a removable enveloping body which at least in regions surrounds it with the same contour.

The Envelope can in principle for all moldings are used that are at least partially protected from damage, Scratching the surface when hygiene measure and with a partial or Complete packaging protected should be.

In the present embodiment according to the 6 . 8th and 9 encased by an insert during injection molding 7 forming envelopes 13 the area of the bristle field and is thereby through the in the receiving holes 9 pressed-in bristle bundle 10 with the brush 14 connected. The insert remains after the spraying process 7 connected to the molded part, is ejected together with this as a unit and then forms a protective body enveloping and protecting the bristle field or another or additional area of the molded body 13 , The envelope forms a tamper-evident seal, which guarantees the user that the encased area of the molded body (toothbrush) is hygienically sealed and was securely accessible during transport between the manufacturing process and an end user. The bristle field of the brush in the exemplary embodiment 14 enveloping envelopes 13 can be removed by the user of the toothbrush, but can then no longer be placed on the bristle bundles due to the slight spreading of the bristle bundles, so that tampering with the original is excluded.

The insert part 7 can envelop parts of the molded part or molded body, but if necessary also the entire molded body, so that the enveloping body 13 then simultaneously forms a complete package of the molded body. There is the possibility of insert parts 7 both in the mold half 2 as well as in the mold half 3 use. These two insert parts are then expediently connected to one another via predetermined separation points, which can be formed by latching or gating, in such a way that they can be separated from one another in a simple manner by a user in order to be able to remove the molded body embedded therein. The two insert parts 7 or later envelopes 13 can each envelop the molded body approximately half-way up to its circumferential separation point originating from the parting plane during spraying. As already mentioned, this can affect partial areas of the shaped body or the entire shaped body.

The 10 to 12 show design variants of an insert 7a . 7b which after the production of the shaped body 13a respectively 13b forms, here the molded body (brush 14 ) is encased practically extensively in the area of the brush head and the bristle field. The insert part 7a is in a corresponding cavity 8th one half of the mold can be used, this insert 7a a lower part 15 with the receiving holes 9 for the bristle bundle, while an upper part 16 partially engages around the brush body in the area of the brush head. An area of the brush back 17 stays through an opening 18 in the top 16 free in the form-forming area 4a the opposite mold plate 2 intervenes. The bottom part 15 and the top 16 of the insert 7a are through separation points 19 connected with each other.

After the toothbrush or the like is molded, it is molded together with the insert 7a ejected and forms a protective covering for the brushes. In the embodiment the insert extends 7a or the envelope 13a over the brush head area with bristle field, while the subsequent handle is exposed.

There is also the possibility that this enveloping body extends over the entire length of the brush and envelops it practically completely. How particularly good in 11 part of the back of the brush is visible 17 free, but slightly set back inside the upper shell so that there is sufficient protection against scratching the surface.

The receiving holes 9 for the bristle bundle 10 inside the lower part 15 of the insert 7a are designed as blind holes. With these blind holes, the respective hole base is 20 positioned or shaped so that the in the receiving holes 9 used bristle bundles consisting of individual filaments assume a position corresponding to the later use surface of the bristle field.

In 12 is an embodiment of an insert 7b shown in which the lower part 15 through holes for receiving the bristle bundles 9 having. In order to be able to profile the use side of the bristle field, there is an end cover 21 provided in which supports can be provided to form an intended topography of the use side of the bristle field. The end cover 21 can via snap connections with the lower part 15 of the insert 7b be connected. When inserting the bundles of bristles into the receiving holes 9 with an oblique hole base, as shown in the figures, the individual filaments of a bristle bundle are displaced relative to one another, so that a bundle surface corresponding to the course of the hole base is established on the use side.

It should also be mentioned that the mounting holes provided in the insert part 9 are dimensioned so that the bristle bundles inserted therein are kept under pressure. On the one hand, this provides a sufficiently durable connection between the insert part and the brush when the insert part is ejected together with the brush and an enveloping body 13 forms. On the other hand, the closely spaced individual filaments of the bristle bundle prevent over-splashing in the transition area between the bristle bundle and the brush body.

This can be further improved by inserting bristle bundles after inserting or after inserting them into a receiving cavity 8th is elastically deformed to reduce the cross section of the bristle bundle receiving holes. This can be done by pressing elements to act on the insert part transverse to the longitudinal extent of the receiving holes. On the other hand, there is also the possibility of the receiving cavity in the mold half and / or the insert 7 to be at least partially conical so that the bristle bundle receiving holes are narrowed when inserted. Due to the elasticity of the insert made of injection molding material, the clamping force between the insert and the bristle bundles after demolding is reduced again to such an extent that there is still a sufficient connecting force, but on the other hand the insert serving as an enveloping body can be removed before the molded body is used.

7 shows an insert 7 with in its receiving holes 9 used bristle bundles, the fastening ends protruding beyond the opening side 11 with a soft component 22 are encapsulated. After inserting the insert 7 into a receiving cavity 8th A mold half, where the brush body is sprayed, is connected to the bristle bundles, with the soft component located between them 22 flexible storage of the bristle bundles on the brush body is achieved ( 8th ).

13 shows an insert 7 with special cross-sectional shape of the receiving holes 9 for bristle bundles 10 , There are some bristle bundle receiving holes here 9a . 9b provided that result in curved or straight, strip-shaped rows of bristles. The total cross section of the receiving holes 9a . 9b is larger than the cross section of a single bundle of bristles, which is in a receiving hole 9 fits. The strip-shaped receiving holes 9a . 9b are divided into several sections, the cross section of which corresponds to a single bristle bundle cross section. This makes it possible, regardless of the length and shape of the strip-shaped partial bristle fields, to use a bristle bundle feed device which can feed bristle bundles with the same cross section, so that both round receiving holes 9 as well as arbitrarily shaped, by partitions 23 divided receiving holes 9a . 9b can be easily assembled.

When producing multi-component moldings, after molding one component, the molding is moved and the next component is molded there. For this purpose, a transfer device is used to transfer the molded parts from one group of mold nests into another group of mold nests. The insert can do this 7 are used, which is designed in this case so that it encompasses the molded part to be transferred at least in some areas. This also includes the connection between the insert part 7 and molded articles over bundles of bristles. When using, for example, a turning tool with convertible on set plates and insert parts used in the area of a brush head 7 . 7a . 7b , the brushes remain with the insert during transport over their bristle bundles 7 connected.

Claims (38)

Method for producing molded parts in a mold cavity of a mold half with a mold having mold-forming areas, characterized in that at least one mold half ( 2 . 3 ) or at least part of a shape-forming area ( 4 . 4a ) a mold half made of injection molding material and this part ( 7 ) is connected to the associated mold half and then the molding is injected with this mold. A method according to claim 1, characterized in that at least in one mold half ( 2 . 3 ) an insert part in at least one shape-forming area ( 7 . 7a . 7b ) which covers the at least one shape-forming area ( 4 . 4a ) or a portion of it and itself consists of injection molding material is used. Method according to claim 1 or 2, characterized in that an insert part ( 7 . 7a . 7b ), with more than one shape-forming area ( 4 . 4a ), preferably several shape-forming areas located directly next to one another. Method according to one of claims 1 to 3, characterized in that the insert ( 7 . 7a . 7b ) manufactured by injection molding, inserted into the mold and ejected after the injection molding. Method according to one of claims 1 to 3, characterized in that the insert ( 7 . 7a . 7b ) after the injection of a molded part for further spraying processes remains in the mold up to its wear limit and is then ejected. Method according to one of claims 1 to 3, characterized in that the insert ( 7 . 7a . 7b ) after the injection molding of a molding is ejected as a unit with the molding. Method according to one of claims 1 to 6, characterized in that the shaping insert ( 7 . 7a . 7b ) with a brush ( 14 ) is used as an injection molding at least in the area of a bristle field in a mold half and receiving holes ( 9 . 9a . 9b ) for at least part of the bristle bundles ( 10 ) having. Method according to one of claims 1 to 7, characterized in that in the case of a brush as an injection molding, the shaping, receiving holes ( 9 . 9a . 9b ) for bundles of bristles ( 10 ) insert part ( 7 . 7a . 7b ) is loaded with bristle bundles before being inserted into a mold half. Method according to one of claims 1 to 8, characterized in that in the case of a brush as an injection molded part, the insert ( 7 . 7a . 7b ) produced by injection molding, fed to a bristle bundle filling station, inserted into the mold after filling and ejected after the injection molding. Method according to one of claims 1 to 8, characterized in that in the case of a brush as an injection molded part, the insert ( 7 . 7a . 7b ) after spraying the molding and removed from a filling station for filling with bristle bundles ( 10 ) is supplied. Method according to one of claims 1 to 8, characterized in that in the case of a brush as an injection molded part, the insert ( 7 . 7a . 7b ) after spraying the molding, connected to it and connected via its bristle field, is ejected as a unit. Method according to one of claims 1 to 11, characterized in that in the case of a brush as an injection molding, the bristle bundles ( 10 ) when loading the insert ( 7 . 7a . 7b ) are positioned in the longitudinal direction to form a predeterminable usage surface of the bristle field. Method according to one of claims 1 to 12, characterized in that the shaping, receiving holes ( 9 . 9a . 9b ) for bundles of bristles ( 10 ) insert part ( 7 . 7a . 7b ) after loading with bristle bundles ( 10 ) during or after insertion in a receiving cavity ( 8th ) of the mold half elastic to reduce the cross-section of the bristle bundle receiving openings ( 9 . 9a . 9b ) is deformed. Method for producing molded parts from at least two components, wherein after the injection of one component, the molded part is converted to inject another component, in particular according to one of claims 1 to 13, characterized in that the molded part is covered by at least one, at least in some areas mold-forming area or a partial area thereof, consisting of an injection molding material ( 7 . 7a . 7b ) is held and implemented. Injection molding tool with mold halves having mold-forming areas, for carrying out the method according to one of claims 1 to 14, characterized in that at least a part of the mold halves in a shape-forming area ( 4 . 4a ) is itself an injection molded part. Tool according to claim 15, with mold halves and at least one insert plate which can be inserted into a mold half and has at least parts of shape-forming areas, characterized in that at least a section of the insert plate in a shaping area ( 4 . 4a ) consists of injection molding material. Tool according to claim 15 or 16, characterized in that the shape-forming area made of injection molding material as an insert ( 7 . 7a . 7b ) is formed, which in a receiving cavity ( 8th ) a mold half or an insert plate can be used. Tool according to one of claims 15 to 17, characterized in that the insert part ( 7 . 7a . 7b ) more than a form-forming area ( 4 . 4a ), preferably has a plurality of shape-forming areas located directly next to one another. Tool according to one of claims 15 to 18, characterized in that the insert part ( 7 . 7a . 7b ) in the case of a mold half or insert plate in the case of a brush, which has at least a part of shape-forming regions ( 14 ) is used as a molded part, at least in the area of a bristle field, and receiving holes ( 9 . 9a . 9b ) for at least part of the bristle bundles ( 10 ) having. Tool according to claim 19, characterized in that at least one of the bristle bundle receiving holes ( 9a . 9b ) of the insert ( 7 . 7a . 7b ) has a cross-section that is larger than the cross-section of a single bundle of bristles ( 10 ) and that the receiving hole partitions ( 23 ) has approximately corresponding partial cross sections for dividing the total receiving hole cross section in the individual bristle bundle cross section. Tool according to claim 20, characterized in that the bristle bundle receiving holes ( 9a . 9b ) for several, through partitions ( 23 ) separate bristle bundles ( 10 ) composite bristle subfields have a square, rectangular, rounded, round or straight or curved strip-shaped cross section. Tool according to one of claims 15 to 21, characterized in that the shape-forming insert part ( 7 . 7a . 7b ) is elastically deformable and that means for deforming and in particular for narrowing the receiving holes ( 9 . 9a . 9b ) for the bristle bundles ( 10 ) are provided. Tool according to claim 22, characterized in that as a means in particular for narrowing the receiving holes ( 9 . 9a . 9b ) for the bristle bundles ( 10 ) in the area of a receiving cavity in a mold half or an insert plate at least one pressure element for loading the insert part ( 7 . 7a . 7b ) transverse to the longitudinal extent of the receiving holes ( 9 . 9a . 9b ) is provided. Tool according to claim 22 or 23, characterized in that as a means for narrowing the receiving holes ( 9 . 9a . 9b ) especially for the bristle bundles ( 10 ) a receiving cavity provided in a mold half or an insert plate ( 8th ) and / or the insert ( 7 . 7a . 7b ) is (at least partially) conical. Tool according to one of claims 15 to 24, characterized in that for positioning the bristle bundles ( 10 ) to form a predefinable user surface of the bristle field (topography), in the insert part ( 7 . 7a . 7b ) Blind holes ( 9 . 9a . 9b ) with hole bases positioned or shaped according to the usage surface ( 20 ) are provided. Tool according to one of claims 15 to 25, characterized in that for the injection molding insert ( 7 . 7a . 7b ) a connection with the contacting injection molding material of the molded part is not provided. Tool according to one of claims 15 to 26, characterized in that the material for the injection molding insert ( 7 . 7a . 7b ) has a higher melting point than the material for the molding. Tool according to one of claims 15 to 27, characterized in that the material for the injection molding insert ( 7 . 7a . 7b ) made of metal or preferably in particular thermoplastic, optionally made of a metal-plastic mixture. Tool in particular according to one of claims 15 to 28, with at least two groups of mold nests for producing multi-component moldings, wherein a transfer device is provided for converting moldings from one group of mold nests into another group of mold nests, characterized in that at least one insert part made of injection molding material encompassing the molded part at least in some areas, having a shape-forming area or a partial area thereof ( 7 . 7a . 7b ) is provided, which can be coupled to the conversion device for a conversion process. Moldings produced by means of a spray Casting tool according to one of claims 15 to 29 and / or according to a method according to one of claims 1 to 14, characterized in that the molded body with an insert part which initially forms during injection molding and is itself made of injection molding material ( 7 . 7a . 7b ) as a separable enveloping body which at least in regions envelops the shaped body with the same contour ( 13 . 13a . 13b ), which in particular constitutes a degree of authenticity. Shaped body according to Claim 30, characterized in that the shaped body is a brush, that the enveloping body ( 13 . 13a . 13b ) Mounting holes ( 9 . 9a . 9b ) for bristle bundles engaging in this ( 10 ) and that the molded body and the envelope body separable therefrom ( 13 . 13a . 13b ) through the into the receiving holes ( 9 . 9a . 9b ) engaging bristle bundle ( 10 ) are separably connected to each other. Shaped body according to claim 31, characterized in that the in the enveloping body ( 13 . 13a . 13b ) located receiving holes ( 9 . 9a . 9b ) for the bristle bundles ( 10 ) are designed as blind holes. Shaped body according to claim 31 or 32, characterized in that the enveloping body ( 13 . 13a . 13b ) envelops the molded body in the area of the bristle field. Shaped body according to one of claims 30 to 33, characterized in that the enveloping body ( 13 . 13a . 13b ) envelops the molded body approximately half-way up to its circumferential separation point originating from the parting plane during spraying. Shaped body according to one of claims 30 to 34, characterized in that the enveloping body ( 13 . 13a . 13b ) is formed at least in two parts and encases the molded body on several sides, possibly practically completely, and that the envelope body parts are separated from one another in the region of the circumferential separation point resulting from spraying. Shaped body according to claim 35, characterized in that the at least two removable sheathing body parts enveloping the shaped body via predetermined separation points ( 19 ) are connected. moldings according to one of the claims 30 to 36, characterized in that the envelope body or parts Griffin approaches or depressions for manual separation of the or the parts of the molded body exhibit. Shaped body according to one of claims 30 to 37, characterized in that the shaped body is a toothbrush with handle and bristle field and that at least the brush head in the region of the bristle field from the removable enveloping body ( 13 . 13a . 13b ) is enveloped.