Stop module

Abstract

Stop module, in particular for automatic processing and conveying devices, with a base body (21) having a longitudinal axis (20) and a recess (23) formed by side walls (25a, 25b) extending along the longitudinal axis (20) and a base (27), in which a stop unit (24) having a stop member (32) is received for objects (13) moving in a current working movement direction (12), which is movably mounted on the base body (21) by means of an actuator (31) belonging to the stop module (11) between an active position (33) projecting into a movement plane of the objects (13) and an inactive position (34) displaced out of the movement plane by a downward stroke, wherein the base body (21) is made of plastic and has at least two fastening holes (36a,36b) for fastening to an associated fastening profile (14) of the processing and conveying device by means of fastening elements (37) passing through the fastening holes (14), characterized in that each side wall (25a, 25b) is assigned at least one stiffening projection (46a, 46b) in the region of each fastening hole (36a, 36b), which projects beyond the bottom surface (28) of the bottom (27) and is formed on the one hand on the side wall (25a, 25b) and on the other hand on the bottom (27).

Description

The invention relates to a stop module, in particular for automatic processing and conveying devices, having a base body which has a longitudinal axis and has a recess formed by side walls extending along the longitudinal axis and a base, in which recess a stop unit which has a stop member for objects moving in a current direction of movement is accommodated and which is mounted on the base body movably by means of an actuating drive belonging to the stop module between an active position projecting into a plane of movement of the objects and an inactive position displaced out of the plane of movement by downward stroke, wherein the base body consists of plastic and has at least two fastening holes, which are oriented transversely to the longitudinal axis, for fastening to an associated fastening profile of the processing and conveying device with the aid of fastening elements passing through the fastening holes.In the use state, such stop modules are fastened to fastening profiles of a processing and conveying device, for example a conveyor belt. The fastening profiles are generally extruded profiles, in particular made of aluminum, which have a groove running in the longitudinal direction, which groove can have a hammerhead-like profile cross section, for example.Fastening elements passing through fastening holes on the base body of the stop module, for example threaded bolts, are used for fastening, which are equipped with slot nuts which serve for engaging in the groove on the fastening profile. The other end of the threaded bolt protrudes beyond the side wall of the base body and is generally fixed there with a nut, whereby the stop module is tightened onto the side surface of the fastening profile.In the case of the customary fastening profiles, there is a certain dimension between the center of the groove in the fastening profile and the lower edge of the workpiece carrier transported on the transport belt, which may be a pallet, for example. Consequently, the distance between the bore formed in the base body and the upper edge of the stop module must be less than the aforementioned dimension, since otherwise the base body of the stop module would already stand into the plane of movement and would impede the movement of the workpiece carrier. Therefore, the position of the fastening holes in the base body is determined depending on the distance between the center of the groove of the fastening profile and the lower edge of the workpiece carrier and therefore in the case of specific fastening profiles. The base body of the stop module, however, additionally has a recess in which the stop unit, which is displaced between the active and the inactive position by means of the actuating drive, is accommodated. This recess is generally relatively large, since, in particular in the case of stop modules with integrated damping, there is a need to integrate a damping device into the stop unit. However, this leads to the upper edge of the fastening holes in the base body and the base of the recess being at a relatively small distance from one another, i.e. the wall thickness of the base body between the bore and the recess is relatively small.It is now already known to produce the base body of stop modules from plastic. However, problems arise when fastening the plastic base body of the stop module. When the fastening elements are tightened, the plastic base body is deformed, in particular in the region of the fastening holes and in the region of the side walls flanking the recess in the base body. This can lead to the stop unit being hindered during the upward and downward stroke and possibly even jamming.From a documentally inexceptible prior art it is already known to insert metal sleeves into the fastening holes in order to prevent the transmission of the clamping forces when the fastening elements are tightened onto the plastic body. However, this is complicated and therefore cost-intensive.It is the object of the invention to provide a stop module of the type mentioned at the beginning which can be produced more cost-effectively compared with stop modules known from the prior art.This object is achieved by a stop module having the features of independent claim 1. Further developments of the invention are described in the dependent claims.The stop module according to the invention is characterized in that each side wall is assigned at least one stiffening projection in the region of each fastening hole, which projection protrudes beyond the bottom surface of the base and is formed on the one hand on the side wall and on the other hand on the base.The stiffening projections can therefore be formed simultaneously during the production of the plastic base body. Additional components for stiffening, such as metal sleeves as known from the prior art, are therefore not necessary. This leads to a considerable saving in production. The stiffening projections have several functions. On the one hand, they reinforce the wall thickness between the upper edge of the fastening holes and the bottom of the recess and, on the other hand, they support the side walls, thus minimizing the deformation of the side walls when being clamped to the associated fastening profile. The stiffening projections are located in the peripheral area of the fastening holes.In a further development of the invention, the stiffening projection extends starting from the associated side wall in the direction of the opposite side wall.Expediently, the stiffening projection extends axially to a hole longitudinal axis of the associated fastening hole.It is possible for the stiffening projection to end freely between the two side walls, extending from the associated side wall in the direction of the opposite side wall axially to the longitudinal axis of the hole of the associated fastening hole.The profile of the stiffening projection is arbitrary; the important factor is the thickening of the wall thickness in the base region of the recess. Expediently, however, the stiffening projection is wedge-shaped. A semi-truncated-cone-shaped profile of the stiffening projection is particularly preferred. However, other geometries are also conceivable.Alternatively to the freely outgoing stiffening projection, however, the stiffening projection can also be formed by an end section of a stiffening web connecting the two side walls to one another.It is therefore possible for the two side walls to be connected to one another by the stiffening web, wherein the stiffening projection of one side wall is formed by the one end section of the stiffening web and the stiffening projection of the opposite other side wall is formed by the opposite end section of the stiffening web. The profile of the stiffening web is arbitrary, but a semi-cylindrical profile is preferred.In a further development of the invention, the base body has a coupling opening in the region of the base of the receptacle, by means of which coupling between the actuating drive and the stop unit is made possible, wherein the fastening holes and associated stiffening projections are arranged on this side and beyond the coupling opening.In a further development of the invention, the base body has a receiving section equipped with the recess for the stop unit and a base section having a cavity, in which the actuating drive is received, wherein the cavity opens out into the exception via the coupling opening. The actuator can be a fluidic, for example pneumatic or an electric actuator.In a particularly preferred manner, the base body is formed as a one-piece plastic body with the receiving section having the side walls, the fastening holes and the stiffening projections and the base section having the cavity. In a particularly preferred manner, this one-piece plastic body is produced by means of injection molding. In this case, all functional sections, i.e. in particular also the stiffening projections, can be formed identically by appropriate configuration of the injection molding tool.In a further development of the invention, the stop unit has a stop member carrier on which the stop member is mounted and which is coupled to the actuating drive, wherein the stop member carrier consists of plastic.In addition to the plastic base body, the stop member carrier can therefore also consist of plastic, which enables a further reduction of the production costs.In a further development of the invention, the stop member carrier has a cavity forming part of a damping device, in which the stop member is guided in a damped linearly movable manner in the manner of a slide from an extended basic position into a retracted stop position, wherein the cavity is open on one side via a cavity opening and the cavity opening is closed in a fluid-tight manner by means of a closure cover which is a component formed separately from the stop member carrier.In principle, stop modules can be distinguished into damped and undued designs. In the damped stop modules, a damping device is integrated which ensures that the object moving in the direction of working movement, for example a workpiece carrier in the form of a pallet, is braked in a damped manner, wherein the stop member is transferred from the extended basic position in a damped manner into the retracted stop position. The stop member carrier is part of a damping device, in particular it forms the damper housing of a damper. Expediently, the stop member has a piston rod and a damper piston which is movably guided in the cavity of the stop member carrier / damper housing. There is a need to close the cavity, which is achieved by the end cover.In a particularly preferred manner, the end cover consists of plastic. Expediently, the end cover is likewise a plastics injection-molded part.The end cover can be a front cover which, for its part, is traversed by the piston rod of the stop member. Alternatively, however, it is also conceivable for the end cover to be a rear cover and for the front side of the stop member carrier to be formed integrally with the stop member carrier consisting of plastic and to be provided only with an opening for the piston rod.In a particularly preferred manner, the end cover is connected to the stop member carrier without screws, in particular in a materially integral manner. It is possible, for example, to weld the end cover to a stop member carrier by means of ultrasonic welding.A preferred exemplary embodiment of the invention is illustrated in the drawing and is explained in more detail below. In the drawing, the following are shown: FIG. 1 shows a front view of a preferred exemplary embodiment of the stop module according to the invention fastened to a fastening profile of an automatic processing and conveying device, wherein the stop module is shown without a stop member, FIG. 2 shows a front view of the stop module from FIG. 1 with stop member, FIG. 3 is a section through the stop member of FIG. 2 along the line III-III in FIG. 2, FIG. 4 shows a perspective illustration of the base body of the stop module according to the invention, FIG. 5 shows a side view of the stop module from FIG. 2, FIG. 6 shows a cross section through the stop module of FIG. 5 along the line VI-VI in FIG. 5, FIG. 7 shows a second exemplary embodiment of the stop module according to the invention on a fastening profile of an automatic processing and conveying device, wherein the stop module is shown without a stop member, FIG. 8 shows a perspective illustration of the base body of the stop module from FIG. 7, FIG. 9 shows a side view of the stop module from FIG. 7 and FIG. 10 shows a cross section through the stop module from FIG. 9 along the line X-X in FIG. 9.FIGS. 1 to 6 show a first exemplary embodiment of the stop module 11 according to the invention. The stop module 11 is preferably used in automatic processing and conveying devices, for example conveyor belts in the automobile industry, in order to separate objects 13, for example workpieces 13, which move in a movement plane in a working movement direction 12. After singulation, the articles 13 may then be individually treated, e.g., processed, redirected, etc.As shown in FIG. 1 in particular, the automatic processing and conveying device expediently has fastening profiles 14 which are aligned parallel to one another along the direction of working movement 12 and of which a fastening profile 14 is shown in cross section in FIG. 1. The fastening profile 14 is shown by way of example in the form of an extruded profile, for example made of aluminum material. The fastening profile 14 has an upper side 15 on which a conveyor belt 16 is mounted in a linearly movable manner.Arranged parallel to the fastening profile shown in FIG. 1 is a further fastening profile which is of identical construction. However, the stop module 11 is usually located only on one of the two fastening profiles 14.The fastening profile 14 has a fastening groove 17 running in its longitudinal direction with a hammerhead-like profile cross section. For this purpose, the fastening groove 17 has a narrow neck section 18 opening toward the side surface of the fastening profile 14 and a fastening section 19 with a larger cross-sectional profile widening thereon in the direction of the interior of the fastening profile 14.The conveyor belt 16 has an upper edge 80, and a distance a is formed between the upper edge 80 of the conveyor belt 16 and the center of the neck portion 18 in the height direction.The stop module 11 has a base body 21 equipped with a longitudinal axis 20, which is shown in more detail in FIG. 4. The base body 21 has a receiving section 22, in which a recess 23 for a stop unit 24, described in more detail below, of the stop module 11 is formed.As shown in particular in FIG. 4, the recess is defined by two side walls 25 a, 25 barranged parallel to one another and each extending along the longitudinal axis 20, and a rear wall 26 and a base 27. The bottom 27 has a bottom surface 28. the recess 23 is open on the side opposite the rear wall 26 and has a side opening 29 there. the base body 21 of the stop module 11 has, in addition to the receiving section 22, a base section 30 which serves to receive an actuating drive 31.As already mentioned, the stop unit 24 is accommodated in the recess 23 in the base body 21. The stop unit 24 has a stop member 32 for which the objects 13 moving in the current direction of working movement 12 are mounted on the base body 21 such that they can be moved by means of the actuating drive 31 between an active position 33 projecting into the plane of movement of the objects 13 and an inactive position 34 displacing them out of the plane of movement by downward stroke.In addition to the stop member 32, which will be described in greater detail below, the stop unit 24 has a stop member carrier 35, the configuration of which will likewise be explained in greater detail, which, as shown in particular in FIG. 3, is coupled to the actuating drive 31. The output movement generated by the actuating drive 31 is accordingly transmitted to the stop member carrier 35, which ensures that the stop member is moved between the active position 33 and the inactive position 34.As shown in FIG. 1 in particular, the stop module 11 is to be fastened to a longitudinal side of the associated fastening profile 14. For fastening, the base body 21 of the stop module 11 has at least two fastening holes 36 a, 36 b, which are aligned transversely to the longitudinal axis 20 of the base body 21 and through which suitable fastening elements 37 pass. In order to prevent the base body 21 of the stopper module 11 from protruding into the plane of movement of the articles 13, the distance b between the upper edge 39 of the base body 21 and the center of the fastening holes 36a, 36b corresponding to the center of the neck portion 18 is smaller than the distance a between the upper edge of the conveyor belt and the center of the neck portion 18.Since the recess 23 for receiving the stop unit 24 is dimensioned relatively large as a result of the damping device 40 described in more detail below, this has the consequence that the wall thickness between the bottom surface 28 of the bottom 27 and the upper edge of the fastening holes 36 a, 36 bis relatively small, which shows in particular the overview of FIGS. 3 and 4.An essential aspect of the invention is that the base body 21 consists of plastic. The base body 21 is expediently a plastic injection-molded component produced by means of plastic injection molding. All functional sections are connected to one another in one piece, that is to say the base body is a one-piece or one-piece component, the receiving section 22 with the recess 23 is therefore formed on the base section 30.As shown in FIG. 1 in particular, the fastening element is fastened to the associated fastening profile 14 by fastening elements 37 passing through the fastening holes 36 a, 36 b. The fastening elements 37 are shown here by way of example in the form of threaded bolts or threaded rods. Each of the fastening holes 36 a, 36 bis assigned a threaded bolt. The threaded bolts each have a threaded portion 41 which passes through the associated fastening hole 36 a, 36 b. The threaded section 41 is connected on the one hand to a fastening section 42 which has a slot nut 43 which is freely rotatable with respect to the threaded section 41 and is equipped with a hammerhead-like profile. The opposite end of the threaded portion 41 is free to run out.To fasten the stop module, the slot nut 43 is introduced via the neck portion 18 into the associated fastening groove 17, wherein the free rotational mobility also allows threading transversely to the longitudinal extent of the fastening groove 17. The slot nut 43 is received in the hammerhead-like groove fastening portion 19 of the fastening groove 17 in the fastened state and is supported on the wall portion which surrounds the neck portion 18 peripherally. A fastening nut 44 is screwed onto the end region of the threaded section 41 protruding beyond the side surface of the stop module or its base body 21. By tightening the fastening nut 44, the stop module 11 is tensioned on the fastening profile 14.Problems can arise in the case of a base body made of plastic, since material deformations can occur when the stop module 11 is clamped or braced, for example a coupling opening 45 formed between the base section in the region of the base 27 of the recess 23, which coupling opening makes possible a coupling between the actuating drive 31 and the stop unit 24, can deform. It is also conceivable for the side walls 25 a, 25 bwhich flank the recess 23 to bend or deform. All this can lead to the stroke of the stop unit 24 being impaired, until the stop unit 24 is jammed during the upward or downward stroke.To minimize or eliminate this problem, the side wall 25 a, 25 bis assigned at least one stiffening projection 46 in the region of each fastening hole 36 a, 36 b, which projection projects beyond the bottom surface 28 of the bottom 27 and is formed on the one hand on the side wall 25 a, 25 band on the other hand on the bottom 27.As is shown in particular by viewing FIGS. 4 and 6 together, the stiffening projection 46 is arranged in the peripheral circumferential region of the associated fastening hole 36 a, 36 b.As shown in FIG. 4 in particular, each side wall 25 a, 25 bis therefore assigned a stiffening projection 46 a, 46 bfor each fastening hole 36 a, 36 b. For each fastening hole 36 a, 36 b, the reinforcing projections 46 a, 46 bare thus located on the mutually opposite side walls 25 a, 25 b.As shown in FIG. 3 in particular, the coupling opening 45 is located in the bottom surface 28 of the bottom 27 of the base body. The fastening holes 36 a, 36 band thus also the associated stiffening projections 46 a, 46 bare thus located on this side and beyond this coupling opening 45.The stiffening projections 46 a, 46 bare also integrally formed during the production of the plastic base body, in particular by a corresponding configuration of the injection molding tool. The stiffening projections 46 a, 46 bsupport the side wall and rise from the bottom surface of the base 27. This prevents, for example, the side walls 25 a, 25 bfrom bending towards one another when the fastening elements 27 are braced for fastening the stop module 11 to the associated fastening profile 14, which would reduce the opening cross section of the recess 23. At the same time, the stiffening projections 46 a, 46 balso increase the wall thickness between the bottom surface 28 and the upper edge of the fastening holes 36 a, 36 b.According to the first exemplary embodiment, the stiffening projection 46 a, 46 bextends starting from the associated side wall 25 a, 25 bin the direction of the opposite side wall 25 a, 25 baxially with the hole longitudinal axis 48 of the associated fastening hole 36 a, 36 band ends between the two side walls 25 a, 25 b.As shown in FIG. 4 in particular, the stiffening projections 46 a, 46 bare wedge-shaped. They are shown by way of example with a semi-truncated-cone profile.FIG. 3 shows a longitudinal section through the stop module. By way of example, the actuating drive 31 is shown here as a fluidic, in particular pneumatic actuating drive 31. The base body 21, in particular its base section 30, has an in particular cylindrical base body cavity 50, which is open toward the underside of the base body. In this base body cavity 50, a drive piston 51 is movably guided. The drive piston 51 divides the cavity into two piston chambers 52 a, 52 b, of which at least one of the piston chambers 52 a, 52 bcan be supplied with compressed air. In the example shown, the actuating drive is formed by a single-acting pneumatic cylinder, wherein the cylinder housing is formed by the base body 21. In the example, the upper piston chamber 52 acan be charged with fluid, while the lower piston chamber 52 bis traversed by a compression spring 53 which is supported on the one hand on the drive piston 51 and on the other hand on a closure cover 54 which closes the cylindrical main body cavity 50.The closure cover 54 can likewise be produced from plastic. Alternatively, metal material could also be used for the closure cover.As is also shown in FIG. 3, the drive piston 51 is connected to a piston rod 55, which in the example shown is embodied as a relatively short and is embodied as a type of threaded bolt or screw. The piston rod 55 has a threaded section 70 which is coupled to, in particular screwed to, a component of the stop member carrier 35 which is explained in more detail below.As explained above, the stopper unit 24 includes a stopper member 32 and the stopper member support 35.In the exemplary case shown, the stop member carrier 35 likewise consists of plastic. The stop member carrier 35 is preferably also a plastic injection molded component.The stop member support 35 has a support portion 56 for supporting the stop member 32 and a coupling portion 57 for coupling with the actuating drive 31. the support portion 56 and the coupling portion 57 are formed on one another and form a one-piece component.As shown in FIG. 3 in particular, a cavity 58 forming part of the damping device 40 is formed in the carrier section 56, in which cavity the stop member 32 is guided movably in the manner of a slide from an extended basic position into a retracted stop position. The cavity 58 is open on one side via a cavity opening 59, wherein the cavity opening 59 is closed in a fluid-tight manner by means of a closure cover 60, which is a component formed separately from the stop member carrier 35.The end cover 60 is likewise made of plastic. Expediently, the end cover is connected without screws to the carrier section 56 of the stop member carrier 35. The connection can be made, for example, in a material-liquid manner, in particular by means of ultrasonic welding.As shown in FIG. 3 in particular, the stop member 32 has a pawl 61 which projects into the plane of movement of the objects 13 in the active position 33; in addition to the pawl 61, the stop member 32 has a piston rod 62, which likewise forms part of the damping device 40 and is connected on the one hand to the pawl 61, is accommodated in the cavity 58 of the carrier section 56 and is connected on the other hand to a damping piston 63.The damping device 40 consequently has a damper housing which is formed by the stop member carrier 35, wherein the damping housing surrounds the cavity 58, in which the damping piston 63 is movably guided.As shown in FIG. 3 in particular, the coupling section of the stop member carrier 35 has an in particular cylindrical coupling stub 64 In the coupling stub 64 there is located on the end face a blind hole 65, into which the piston rod 55 of the actuator 31 is screwed for coupling to the actuating drive 31.As shown in FIG. 6 in particular, the end cover 60 is assigned to the front side of the stop member carrier 35 and has for this purpose an opening 66 through which the piston rod 62 passes. Furthermore, the end cover has anti-rotation means 67 which in the example are formed by a non-round, for example one-sidedly flattened cross section of the piston rod 62, on the one hand, and, correspondingly thereto, non-round, in particular one-sidedly flattened cross section profile of the through-opening 66. The anti-rotation means 67 prevent a rotation of the piston rod 55 and thus of the coupled pawl 61 relative to the end cover 60 and thus relative to the stop member carrier 35.FIGS. 8 to 10 show a second exemplary embodiment of the stop module 11 according to the invention. The second exemplary embodiment differs from the previously described first exemplary embodiment in the different configuration of the stiffening projections 46 a, 46 b. In contrast to the first exemplary embodiment described above, the stiffening projections 46 a, 46 bare each formed by an end section 68 a, 68 bof a stiffening web 69 a, 69 bconnecting one another between the two side walls 25 a, 25 b.The reinforcing webs 69 a, 69 bhave expediently a semi-cylindrical profile.In this case, the two mutually opposite side walls 25 a, 25 bare connected to one another by stiffening webs 69 a, 69 bextending along the bottom surface 28 in the region of the fastening holes 35 a, 35 b.

Claims

A stop module, in particular for automatic processing and conveying devices, having a base body (21) which has a longitudinal axis (20) and has a recess (23) formed by side walls (25a, 25b) extending along the longitudinal axis (20) and a base (27), in which recess a stop unit (24) which has a stop member (32) for objects (13) moving in a current direction of working movement (12) is accommodated and which is mounted on the base body (21) movably by means of an actuating drive (31) belonging to the stop module (11) between an active position (33) projecting into a plane of movement of the objects (13) and an inactive position (34) displaced out of the plane of movement by downward stroke, wherein the base body (21) consists of plastic and at least two fastening holes (36a aligned transversely to the longitudinal axis (20), 36b) for fastening to an associated fastening profile (14) of the processing and conveying device with the aid of fastening elements (37) passing through the fastening holes (14), characterized in that each side wall (25a, 25b) is associated in the region of each fastening hole (36a, 36b) with at least one stiffening projection (46a, 46b) which projects beyond the bottom surface (28) of the bottom (27) and is formed on the one hand on the side wall (25a, 25b) and on the other hand on the bottom (27).Stop module according to Claim 1, characterized in that the stiffening projection (46a, 46b) extends from the associated side wall (25a, 25b) in the direction of the opposite side wall (25a, 25b).Stop module according to Claim 1 or 2, characterized in that the stiffening projection (46a, 46b) extends axially with respect to a hole longitudinal axis (48) of the associated fastening hole (38a, 38b).Stop module according to Claim 3, characterized in that the stiffening projection (46a, 46b) ends freely, extending from the associated side wall (25a, 25b) in the direction of the opposite side wall (25a, 25b) axially with respect to the longitudinal axis (48) of the hole (36a, 36b) of the associated fastening hole, between the two side walls (25a, 25b).Stop module according to one of the preceding claims, characterized in that the stiffening projection (46a, 46b) is wedge-shaped, in particular has a semi-truncated profile.Stop module according to one of Claims 1 to 3, characterized in that the stiffening projection (46a, 46b) is formed by an end section (68a, 68b) of a stiffening web (69a, 69b) which connects the two side walls (25a, 25b) to one another.Stop module according to Claim 6, characterized in that the reinforcing web (69a, 69b) has a semi-cylindrical profile.Stop module according to one of the preceding claims, characterized in that the base body (21) has, in the region of the base of the recess (23), a coupling opening (45), by means of which coupling between actuating drive (31) and stop unit (24) is made possible, wherein the fastening holes (36a, 36b) and associated stiffening projections (46a, 46b) are arranged on this side and beyond the coupling opening (45).Stop module according to one of the preceding claims, characterized in that the base body (21) has a receiving portion (22) which is equipped with the recess (23) for the stop unit (24), and a base portion (30) which has a cavity (50) and in which the actuating drive (31) is received, the cavity (50) opening into the recess (23) via the coupling opening (45).Stop module according to one of the preceding claims, characterized in that the base body (21), with the receiving portion (22) having the side walls (25a, 25b), the fastening holes (36a, 36b) and the stiffening projections (46a, 46b) and the base portion (30) having the cavity (50), is designed as a one-piece plastic body which is preferably produced by means of plastic injection moulding.Stop module according to one of the preceding claims, characterized in that the stop unit (24) has a stop member carrier (35), on which the stop member (32) is mounted and which is coupled to the actuating drive (31), wherein the stop member carrier (35) consists of plastic.Stop module according to Claim 11, characterized in that the stop member carrier (35) has a cavity (58) which forms part of a damping device (40) and in which the stop member (32) is guided in a damped linearly movable manner in the manner of a slide from an extended basic position into a retracted stop position, wherein the cavity (58) is open on one side via a cavity opening (59) and the cavity opening (59) is closed in a fluid-tight manner by means of a closure cover (60) which is a component which is formed separately from the stop member carrier (35).Stop module according to claim 12, characterised in that the end cover (60) is made of plastic.Stop module according to claim 13, characterised in that the end cover (60) is connected to the stop member carrier (35) without screws, in particular in a materially bonded manner, preferably by means of ultrasonic welding to the stop member carrier (35).

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