DE102017123099A1 - Cartridge and arrangement with this cartridge - Google Patents

Abstract

The invention relates to a cartridge (1) for extruding a flowable mass and to an arrangement of the cartridge (1) in an ejection gun (13), the cartridge (1) being provided by a first stop element (9) and / or a second stop element (11). held in the Auspresspistole (13) and stabilized, whereby the squeezing of the cartridge (1) is significantly simplified.

Description

The invention relates to a cartridge for extruding a flowable mass with the features of the preamble of claim 1. Furthermore, the invention relates to an arrangement of such a cartridge in a Auspresspistole with the features of the preamble of claim. 7

Conventional cartridges for squeezing a flowable mass usually have a cylindrical, filled with the flowable mass base body, on which a plate-like extrusion element for squeezing the flowable mass is arranged. Furthermore, such cartridges usually comprise a thread-equipped opening stub, from which the flowable mass emerges when the cartridge is used as intended, as well as a metering or mixing element corresponding to the thread on the opening stub. Such cartridges have the disadvantage that they can be inserted only in the intended for each cartridge size extrusion guns. In the publication DE 20 2013 011 508 U1 A solution is disclosed to limit a cartridge receiving space of a dispensing gun, thereby making it possible to use even shorter cartridges. However, the solution shown here fails as soon as the mostly circular diameter of the cartridge to be squeezed no longer corresponds to the diameter of the cartridge receiving space.

Multi-chamber cartridges, in particular double cartridges, often have a different cross-section from the cylindrical shape. Therefore, it is usually essential for multi-chamber cartridges, which may have different dimensions, both in length and in width, due to different volumes, to use different dispensing guns suitable for use with such multi-chamber cartridges. From the publication DE 20 2013 103 416 U1 a dispensing gun for double cartridges is known, with which double cartridges can be pressed with different dimensions. For this purpose, the double cartridge to be squeezed out is held at a rear end into which an extrusion piston is to be inserted. A double piston integrated in the extrusion gun is to be introduced into the respective chamber for pressing out the two flowable masses, whereby the two masses can emerge at an outlet end, which faces away from the rear end. A disadvantage of the in the document DE 20 2013 103 416 U1 disclosed extrusion device is that with such a device only double cartridges can be pressed.

Certain dual cartridges are constructed with integrated dual piston to allow the user to squeeze out the contained fluids without a separate dispensing gun. Such double cartridges are usually designed relatively filigree, which means that only relatively small contact surfaces for the hand of a user are present, which makes precise handling difficult. If you wanted such a double cartridge in the in the publication DE 20 2013 103 416 U1 Utilize the disclosed dispensing gun to improve the handling when pressing, this would not be possible due to the integrated in the extrusion gun double piston.

Object of the present invention is to propose a cartridge with an integrated squeezing element for squeezing a flowable mass, which in a commonly used Auspresspistolenausführung, as for example in the 1 the publication DE 20 2013 011 508 U1 is shown, stable introduced and can be used.

This object is achieved by the features of claim 1, and by the features of claim 7. The invention proposes a, in particular consisting of a plastic cartridge for squeezing a flowable mass, which comprises a cartridge body which extends in the direction of a cartridge longitudinal axis and serves to receive the flowable mass. The cartridge body in particular has a substantially cylindrical shape, in particular if only a single component is provided for pressing out of the cartridge. In this case, the cartridge body has a particularly constant circular cross-section. In the case of two or more components to be pressed out, the cartridge body may comprise two or more separate receiving chambers, wherein each receiving chamber may in particular also have a cylindrical shape, wherein the receiving chambers may differ in diameter, ie generally in their cross-sectional area, depending on the desired mixing ratio different components. By "separate from each other" is meant that the different receiving chambers in the cartridge body for storing the components are spatially spaced, such that the individual components are not in the cartridge body in contact with each other and can react with each other. The cylindrical configuration of the cartridge body and the receiving chambers is exemplary. For example, cuboidal or generally polygonal embodiments are possible, but from a manufacturing point of view, the cylinder shape has established. It is also conceivable that in a cylindrically designed cartridge body, individual, spaced-apart receiving chambers are integrated. The cylindrically shaped cartridge body acts in this particular embodiment thus as housing for the individual receiving chambers.

In the cartridge body, a displaceably mounted pressing-out element for pressing out the flowable mass is arranged in the direction of the cartridge axis. The shape of the Auspresselements corresponds in this case with the shape of the receiving chamber. In a cylindrically shaped receiving chamber, a corresponding squeezing element also has a cylindrical shape. In particular, the shape and number of the individual extrusion elements correspond to the shape and the number of individual receiving chambers. In the case of two or more components to be pressed out of a cartridge body, the squeezing elements are usually connected to one another in such a way that all squeezing elements involved move in the direction of the cartridge longitudinal axis at the same speed during the squeezing process. As a result, a precise and always constant mixing ratio of the individual components can be achieved.

Furthermore, the cartridge body comprises a first cartridge body opening for discharging the flowable mass when being pressed out at a first cartridge body end and at least one second cartridge body opening for receiving a squeezing element, or if several squeezing elements are provided for several components, the squeezing elements at a plurality of components, at a second cartridge body end. The squeezing element is inserted into the second cartridge body opening and, in particular, held in the cartridge body at the second end of the cartridge. By applying force to the squeezing element in the direction of the first end of the cartridge and substantially along the longitudinal axis of the cartridge, the squeezing element moves toward the first cartridge body opening provided at the exit of the flowable mass at the first end of the cartridge, whereby at the first end of the cartridge the mass exits the cartridge body. With two or more components to be squeezed out, the first cartridge body opening may be configured such that the first cartridge body opening connects the individual squeeze chambers to each other at the front end, whereby the individual components can be mixed together. For this purpose, static mixers are usually attached to the first cartridge body opening at the front end, which ensure that the individual components are mixed sufficiently well during the extrusion. However, these static mixers are not essential to the invention.

Characteristic of the invention is that the cartridge has a first, in particular made of a plastic or metal stop element, which is arranged at the first end of the cartridge body, which projects beyond the cartridge body at least at one point in a direction transverse to the cartridge longitudinal axis. In particular, the first stop element is designed like a disk and projects beyond the cartridge body in such a way that an outer diameter of the first stop element corresponds to an inner diameter of a cartridge receptacle of an ejection gun, in particular with a holding element arranged on a front end of the cartridge receptacle. The front end of the cartridge receptacle corresponds in particular to the first end of the cartridge body. The extrusion gun may include a squeezing device which is movable in the cartridge receptacle along an extrusion gun axis. The extrusion gun axis extends between the front and the rear end of the extrusion gun and in particular corresponds to the cartridge longitudinal axis. The holding element on the extrusion gun may be a cross-sectional constriction of the usually at least partially cylindrical cartridge receptacle. However, the holding element can also be realized in that at the front end of the cartridge receiving an end surface, in particular in the form of a disc, is arranged, which has an opening. The production of the holding element can be realized by bending the material surrounding the cartridge receptacle, in particular sheet metal, at the rear end of the cartridge receptacle. The first stop element serves as an abutment on the holding element and prevents the cartridge, in particular the cartridge body, from passing beyond the front end of the cartridge receptacle. The, relative to the cartridge longitudinal axis, radial diameter of the particular disk-like configured first stop element, therefore, must be greater than the extent of the opening in the end face, or greater than the resulting by Materialabkantung holding element.

An advantage of using the first, in particular disk-like, stop element in a cylindrical cartridge receptacle is that the first stop element centers the cartridge, at least the first end of the cartridge, in the extrusion gun, which means that the extrusion gun axis and the longitudinal axis of the cartridge, at least at the end of the cartridge, are always approximately congruent held to each other, even during the Auspressvorgangs, whereby tilting is prevented. A use of the cartridge in the Auspresspistole thus leads to a much more pleasant and more precise handling of the cartridge during the Auspressvorganges. If the outer diameter of the first stop element and the inner diameter of the cartridge receptacle differ only insignificantly, the cartridge in the cartridge receptacle can be separated by the cartridge first stop element to be clamped frictionally engaged and in particular without play. However, it is also possible to match the outer diameter of the first stop element with the inner diameter of the cartridge receptacle such that a certain play of the cartridge in the cartridge receptacle is possible.

A disc-like configuration of the first stop element is expedient for centering the cartridge in the cartridge receptacle, but not absolutely necessary. The first stop element can also be designed as a polygonal disk, which also has centering properties. An oval or elliptical design is possible. In extreme cases, however, it is sufficient if the stop element is designed like a pin, which then only comes in contact with the holding element at a single point. The first stop element is preferably made of plastic, alternatively made of metal or another pressure-resistant material. In order to increase the centering effect of the first stop element, this may be designed cylinder-like, such that it extends in the direction of the second end of the cartridge body at least partially along the cartridge body. As a result, the contact surface between the first stop element and the interior of the cartridge receptacle of the extrusion gun, in comparison to the disc-like configuration of the first stop element, significantly increased, which has a much better fixation of the cartridge in the extrusion gun.

A further embodiment of the cartridge according to the invention provides that the squeezing element has a second stop element at the rear end, which serves to apply force. The second stop element is, like the first stop element, designed in particular disk-like. However, an outer diameter of the second stop element corresponds in particular to the inner diameter of the cartridge receptacle of the extrusion gun in such a way that the second stop element always remains movable in the cartridge receptacle in the direction of the extrusion gun axis. The first stop element and the second stop element in particular have a disk-like configuration with in particular substantially the same outer diameter. Due to an identical outer diameter, it is possible to use the cartridge in the extrusion gun in such a way that, in the case of an intended extrusion process, the cartridge longitudinal axis corresponds at all times to the extrusion gun axis. In other words, the first stop element in combination with the second stop element can prevent tilting of the cartridge longitudinal axis relative to the extrusion gun axis. Under certain circumstances, the first stop element or the second stop element can secure the cartridge alone against tilting. This is for example possible when the cartridge is held in the cartridge receptacle solely by the first stop element clamped in the cartridge receptacle, or the second stop element is firmly connected to the piston-like extrusion device of the extrusion gun. However, in practice, it is more practicable to use both the first squeeze element and the second squeeze element to stabilize the cartridge.

A further advantageous embodiment according to the invention provides that the first stop element has an opening through which the flowable mass to be squeezed out can pass if the squeeze gun is used as intended. The breakthrough corresponds in particular to the first cartridge body opening and usually has a round, oval or polygonal shape. The first cartridge body opening may be disposed on a protrusion that penetrates the breakthrough.

In an advantageous, inventive embodiment, the first stop element with the first cartridge body end and / or the second stop element with the rear end of the Auspresselements is releasably or permanently connected. Of a permanent connection is to speak when the first and / or the second stop member are formed in the cartridge manufacturing directly to the first cartridge body end and / or to the rear end of the Auspresselements. It is also possible to adhesively secure the first and / or the second stop element, whereby a cohesive connection is formed.

In particular, however, the first stop element is frictionally and / or positively connected to the first end of the cartridge body. This is usually the breakthrough of the stop element, which corresponds to the shape of the first end of the cartridge body such that between the opening and the first end of the cartridge body a clamping effect, so a press-fitting similar connection may arise. The first stop element is in particular applied along the cartridge axis to the first end of the cartridge body, but connections are also conceivable in which the first stop element is pushed onto the first end of the cartridge perpendicular or at an angle to the cartridge axis. For this purpose, the first stop element may in particular have a one-sided, the outer edge breaking through opening.

The second stop element is in particular frictionally and / or positively connected to the rear end of the Auspresselements over a Clamping device, which is covered by the second stop member, connected, and in particular at an angle perpendicular to the cartridge axis on the rear end of the Auspresselements pushed. For this purpose, the rear end of the Auspresselements in particular a shape with at least two mutually approximately parallel sides. Such a shape is, for example, a rectangle. It is also possible to clampingly connect the second stop element to the rear end of the extrusion element. A clamping connection can be realized in that the second stop element is designed such that at least two approximately opposite sides comprise the rear end of the Auspresselements clamping at least partially. In a purely clamping connection between the second stop element and the rear end of the Auspresselements the second stop element is applied in particular along the cartridge axis on the rear end. In general, both the first stop element with the first end of the cartridge body, and the second stop element with the rear end of the Auspresselements be connected in various ways.

To use the cartridge according to the invention, it must be inserted into the cartridge receptacle of the extrusion gun. The first stop element gets here in contact with the holding element. The ejection device, which is movably arranged in the cartridge receptacle and preferably has a rod guide with a plate element arranged thereon, whose directions of movement correspond to the cartridge longitudinal axis, the ejection gun axis and the directions of movement of the extrusion element of the cartridge, comes into contact with the second stop element and applies a force to it Squeezing the flowable mass from the first cartridge body opening. Due to the fact that the first stop element is mounted as an abutment on the holding element, when the pressing element is acted upon by the squeezing device, the squeezing element pushes in the direction of the first end of the cartridge, which results in the flowable mass, or in the case of several components, the flowable masses, emerge from the first opening of the cartridge body. If the cartridge body is completely squeezed out, the cartridge can be removed from the squeeze gun. Due to the fact that the cartridge in the extrusion gun is essentially held by the first and the second stop element, the actual extent of the cartridge body is insignificant. In principle, any cartridge whose cartridge body has a smaller diameter than the inner diameter of the cartridge receptacle of the extrusion gun can be used.

The invention will be explained with reference to an embodiment shown in the drawing.

• 1 eine erfindungsgemäße Kartusche für zwei Komponenten einer fließfähigen Masse, sowie eine Auspresspistole zur Verwendung der Kartusche in einer Ansicht; und
• 2 eine Detailansicht der Auspresspistole aus 1 mit eingesetzter Kartusche.

Show it:

• 1 a cartridge according to the invention for two components of a flowable mass, as well as a Auspresspistole for use of the cartridge in a view; and
• 2 a detailed view of the Auspresspistole 1 with inserted cartridge.

In 1 is a cartouche 1 with a first stop element 9 and a second stop element 11 , a static mixer 22 , as well as an extrusion gun 13 shown. The extrusion gun 13 includes a cartridge holder 17 having a U-shaped, open to a peripheral side, cylindrical basic shape. Next includes the extrusion gun 13 a squeezing device 18 which one in the cartridge receptacle 17 movably arranged rod guide 19 with a plate element 20 having. A rear end 16 the cartridge intake 17 is designed as a closed ring in such a way that there, when the plate element 20 at the far end 16 the cartridge intake 17 located, in particular cylindrically shaped, with the cartridge receptacle 17 corresponding one-component cartridge, as is commercially available for sealants, can be used with a rear end (not shown here). Next shows the cartridge intake 17 a front end 14 with a holding element 15 on, which serves as an abutment for a commercial Einkomponentenkartusche (not shown).

The cartouche 1 consists in particular of a visible plastic and comprises a cartridge body 2 , which has two spaced-apart cylinder-like receiving chambers 23 . 23a includes. The reception chambers 23 . 23a include two components 24 . 24a a flowable mass, the intended use of the cartridge 1 at one end of a first cartridge body end 7 arranged first cartridge body opening 5 , which is configured to receive a static mixer, can escape. The at the first cartridge body opening 5 leaking components 24 . 24a enter the static mixer 22 one. This mixes the component 24 . 24a in the intended manner, whereby the components 24 . 24a react with each other and a curing process is initiated. The reception chambers 23 . 23a are symmetrical with respect to a cartridge longitudinal axis 3 arranged. Due to the cylindrical configuration of the receiving chambers 23 . 23a , shows the cartridge body 2 approximately the cross section of an eight. Further includes the cartridge body 2 a second Cartridge body opening 6 for receiving a double-piston-like extrusion element 4 . 4a , In this case, the shape of the Auspresselements correspond 4 with the receiving chamber 23 and the shape of the squeezing element 4a with the shape of the receiving chamber 23a , The pressing elements 4 . 4a are symmetrical with respect to the cartridge longitudinal axis 3 arranged and at a rear end 10 the squeezing element 4 . 4a connected with each other. The back end 10 the squeezing element 4 . 4a points, symmetrical with respect to the cartridge longitudinal axis 3 , An approximately oval configuration and serves in particular as a support surface for a thumb of a human hand. Next includes the cartouche 1 a likewise approximately oval ausgestaltetes, disc-like handle element 25 , which has approximately the same radial dimensions with respect to the longitudinal axis of the cartridge 3 like the back end 10 the squeezing element 4 . 4a and at the second end of the cartridge body 8th is arranged. The grip element 25 is when using the cartridge 1 without squeegee 13 , intended as an attachment for middle finger and ring finger of a human hand, which does not mean, however, that the cartridge 1 can not be operated ambidextrous Thus, in combination with a thumb at the back end 10 the squeezing element 4 . 4a , the squeezing element 4 . 4a in the direction of the first cartridge body end 7 , in the cartridge body 2 , along the longitudinal axis of the cartridge 3 , are introduced, reducing the flowable masses 24 . 24a from the first opening of the cartridge 5 to be able to step out.

This in 1 shown first stop element 9 in particular, like the cartridge body 2 , made of a plastic and has the shape of a disc. Furthermore, the first stop element comprises 9 a breakthrough 12 , which is designed such that it with the first cartridge body end 7 corresponds. The breakthrough 12 and the first cartridge body end 7 correspond such that the first stop element 9 clamping in the direction of the cartridge longitudinal axis 3 on the first cartridge body end 7 is pluggable. The first cartridge body opening 5 enough through the breakthrough 12 through that onto the first cartridge body opening 5 , the static mixer 22 attachable. However, it is also possible to first use the static mixer 22 with the first cartridge body opening 5 to connect and subsequently the first stop element 9 at the first cartridge body end 7 to install. This in 1 shown and from the cartouche 1 included second stop element 11 points as the first stop element 9 , the shape of a disc. In particular, the diameter of the first stop element corresponds 9 with the diameter of the second stop element 11 , Next is the second stop element 11 designed such that this via clamping devices 26 which consists essentially of two parallel to each other and on the second stop element 11 arranged, L-shaped bars exist, at the rear end 10 the squeezing element 4 . 4a can be arranged. The clamping devices 26 are arranged such that they are the rear end 10 the squeezing element 4 . 4a can spread over. The distance between the two clamping devices 26 corresponds at least partially with the radial diameter of the rear end 10 the squeezing element 4 . 4a in such a way that the second stop element 11 with the help of the clamping device 26 , by sliding it on the back end 10 the squeezing element 4 . 4a in a direction perpendicular to the cartridge longitudinal axis 3 , clamped frictionally and / or positively at the rear end 10 the squeezing element 4 . 4a is held. In particular, the first stop element 9 at the first cartridge body end 7 and the second stopper member 11 at the far end 10 the squeezing element 4 . 4a fixed so that both the first stop element 9 as well as the second stop element 11 , with respect to a direction perpendicular to the cartridge longitudinal axis 3 , symmetrical to the cartridge longitudinal axis 3 are arranged. In addition, the first stop element 9 and the second stopper member 11 preferably an identical, circular outer diameter.

In 2 is part of the extrusion gun 13 shown in their cartridge intake 17 the cartouche 1 , with on the cartridge body 2 and the squeezing elements 4 . 4a mounted first stop element 9 and mounted second stop element 11 , is arranged. The first stop element 9 occurs with the retaining element 15 in contact, which serves as an abutment to slipping out of the cartridge 1 , in particular of the cartridge body 2 , over the front end 14 the cartridge intake 17 beyond, to prevent. Next correspond to the first stop element 9 and the second stopper member 11 in such a way that by the first stop element 9 and the second stopper member 11 the cartouche 1 such in the cartridge intake 13 is arranged that when intended use of the extrusion gun 13 the cartridge longitudinal axis 3 and the squeeze gun axis 21 always coincide or are aligned almost parallel to each other. 2 shows the cartouche 1 with on the cartridge body 2 arranged first stop element 9 , on the squeezing element 4 . 4a arranged second stop element 11 as well as the static mixer 22 located at the first cartridge body opening 5 the cartouche 1 , By actuating the mechanism of the squeezing device 18 becomes the rod guide 19 with the plate element 20 in contact with the second stop element 11 brought. The plate element 20 has a flat surface, with the stop element 11 over the entire surface in contact occurs. This creates a force caused by the squeezing device 18 , on the second stop element 11 , and from the second stop element 11 on the extrusion element 4 . 4a , the cartridge body 2 and the first stopper member 9 transfer. By the retaining element 15 the cartridge is thus exciting in the cartridge holder 17 the extrusion gun 13 held. Upon further application of force, the extrusion elements 4 . 4a in the receiving chambers 23 . 23a of the cartridge body 2 one, making components 24 . 24a in the direction of the first cartridge body end 7 and in the static mixer 22 be urged. The squeezing process is completed when the squeezing device is no longer actuated or the components 24 . 24a completely out of the receiving chambers 23 . 23a have leaked. If the squeezing process is completed, the first stop element 9 and the second stopper member 11 from the cartridge body 2 removed and used to squeeze out more cartridges.

LIST OF REFERENCE NUMBERS

1

cartridge

2

cartridge body

3

cartridges longitudinal axis

4, 4a

Auspresselement

5

first cartridge body opening

6

second cartridge body opening

7

first cartridge body end

8th

second cartridge body end

9

first stop element

10

rear end of the Auspresselements 4 . 4a

11

second stop element

12

breakthrough

13

Auspresspistole

14

front end of the cartridge holder 17

15

retaining element

16

rear end of the cartridge holder 17

17

cartridge tray

18

squeezing

19

baton

20

plate element

21

Auspresspistolenachse

22

static mixer

23, 23a

receiving chamber

24, 24a

Component of a flowable mass

25

handle element

26

clamping device

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202013011508 U1 [0002, 0005]
• DE 202013103416 U1 [0003, 0004]

Claims (11)

Cartridge (1) for extruding a flowable mass, comprising a cartridge body (2) extending in the direction of a cartridge longitudinal axis (3) for receiving the flowable mass, a in the cartridge body (2) in the direction of the cartridge longitudinal axis (3) slidably mounted Auspresselement ( 4, 4a) for squeezing the flowable mass, a first cartridge body opening (5) for discharging the flowable mass upon squeezing at a first cartridge body end (7) and a second cartridge body opening (6) for receiving the squeezing member (4, 4a) at a second cartridge body end (8), characterized in that the cartridge (1) has a first stop element (9) which is arranged on the first cartridge body end (7) of the cartridge body (2), which at least at one point in a direction transverse to the cartridge longitudinal axis (3 ) beyond the cartridge body (2). Cartridge (1) for pressing a flowable mass after Claim 1 , characterized in that the Auspresselement (4, 4a) at a rear end (10), which serves a force application, a second stop element (11). Cartridge (1) for pressing a flowable mass after Claim 1 or 2 , characterized in that the first stop element (9) of the cartridge body (2) is detachably or permanently connected thereto, in particular by frictional and / or force and / or positive connection. Cartridge (1) for pressing a flowable mass after Claim 2 or 3 , characterized in that the second stop element (11) of the extrusion element (4, 4a) is detachably or permanently connected thereto, in particular by frictional and / or force and / or positive connection. Cartridge (1) for pressing a flowable mass according to one of Claims 1 to 4 , characterized in that the first stop element (9) has an opening (12) for the outlet of the flowable mass. Cartridge (1) for pressing a flowable mass according to one of Claims 1 to 5 , characterized in that the first stop element (9) extends at least partially in the direction of the second cartridge body end (8) of the cartridge body (2). Arrangement of a cartridge (1) according to one of Claims 1 to 6 in a dispensing gun (13) provided for use with the cartridge (1), having a front end (14) with a retaining element (15), a rear end (16), a between the front end (14) and the rear end (16 ), a squeezing device (18), which is movably arranged in the cartridge receptacle (17), and an ejection gun axis (21) between the front end (14) and the rear end (16), which coincides with the longitudinal axis of the cartridge ( 3), the directions of movement of the squeezing device (18) and the directions of movement of the squeezing element (4, 4a) of the cartridge (1) corresponds, characterized in that an outer diameter of the first abutment element (9) with an inner diameter of the cartridge receptacle (17) Auspresspistole (13) corresponds. Arrangement of a cartridge (1) according to one of Claims 2 to 6 and an ejection gun (13) provided for using the cartridge (1) Claim 7 , characterized in that an outer diameter of the second stop element (11) with the inner diameter of the cartridge receptacle (17) of the Auspresspistole (13) corresponds. Arrangement according to Claim 7 or 8th , characterized in that the first stop element (9) is mounted as an abutment on the holding element (15). Arrangement according to one of Claims 7 to 9 , characterized in that the second stop element (11) with the squeezing element (4, 4a) of the cartridge (1) comes into abutment and for receiving power for the squeezing device (18) of the extrusion gun (13). Arrangement according to one of Claims 7 to 10 , characterized in that the first stop element (9) and / or the second stop element (11) fixes the cartridge (1) in the cartridge receptacle (17) and secures against tilting of the cartridge longitudinal axis (3) relative to the extrusion gun axis (21).

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