阅读说明：本技术 用于制造密封件的方法和设备 (Method and apparatus for manufacturing a seal ) 是由 V·K·丁 R·施耐德 于 2020-04-24 设计创作，主要内容包括：本发明涉及一种用于制造尤其用于机动车的门(3)或门框架的密封件(2)的方法,其带有以下步骤：-提供条带形的、可剪裁的密封元件,-检查密封元件(5)缺陷部位,-在密封元件(5)处标记每个识别出的缺陷部位,-移除密封元件(5)的每个具有至少一个标记(26)的纵向区段(18),-将密封元件(5)剪裁成期望的长度,设置成,为了相应识别出的缺陷部位的标记(26),移除密封元件(5)的区域(27),其位于密封元件(5)的识别出相应的缺陷部位的纵向区段中,其在密封元件(5)的横截面中小于密封元件(5)的横截面。(The invention relates to a method for producing a seal (2), in particular for a door (3) or a door frame of a motor vehicle, comprising the following steps: -providing a strip-shaped, cuttable sealing element, -inspecting the sealing element (5) for defects, -marking each identified defect at the sealing element (5), -removing each longitudinal section (18) of the sealing element (5) having at least one marking (26), -cutting the sealing element (5) to a desired length, provided that, for the marking (26) of the respective identified defect, a region (27) of the sealing element (5) is removed, which is located in the longitudinal section of the sealing element (5) in which the respective defect is identified, which is smaller in the cross section of the sealing element (5) than the cross section of the sealing element (5).)

1. Method for producing a seal (2), in particular for a door (3) or a door frame of a motor vehicle, with the following steps:

-providing a strip-shaped, cuttable sealing element,

-inspecting the sealing element (5) for defects,

-marking each identified defect site at the sealing element (5),

-removing longitudinal sections (18) of the sealing element (5) each having at least one marking (26),

-cutting the sealing element (5) to a desired length,

characterized in that, for marking (26) the respective identified defect, a region (27) of the sealing element (5) is removed, said region being located in a longitudinal section of the sealing element (5) in which the respective defect is identified, said region being smaller in a cross section of the sealing element (5) than a cross section of the sealing element (5).

2. Method according to claim 1, characterized in that said regions (27) are removed with a preset minimum size independently of the respective detected defect site (27).

3. Method according to any one of the preceding claims, characterized in that the same said area (27) is removed in the cross section of the sealing element (5) independently of the respective detected defect site.

4. Method according to any one of the preceding claims, characterized in that only the regions (27) of the sealing element (5) having the respective defect sites are removed in the cross section of the sealing element (5).

5. Method according to any one of the preceding claims, characterized in that the area (27) is removed by blanking.

6. Method according to any one of the preceding claims, characterized in that said areas (27) are removed by cutting.

7. Method according to claim 6, characterized in that the areas (27) are removed by water cutting, laser cutting or mechanical cutting.

8. Method according to any of the preceding claims, characterized in that the region (27) is removed by a drilling-or milling process.

9. Method according to any one of the preceding claims, characterized in that the free ends of the sealing element (5) left by cutting out a longitudinal section (18) of the sealing element (5) having at least one marking (26) are connected to each other before cutting out the sealing element (5).

10. A device (1) for producing a seal (2) for a door (3) or a door frame, in particular for a motor vehicle, having: a first inspection device (4) for detecting defects in or on the strip-shaped, cuttable sealing element (5) at the sealing element (5); and marking means (7) for marking each identified defect site of the sealing element (5) at the sealing element (5); -second checking means for detecting the respective said mark (26); and a repair device (14) for removing a longitudinal section of the sealing element (5) provided with a marking (26), characterized in that the marking device (7) is configured to remove a region (27) of the sealing element (5) which is located in a longitudinal section (18) of the sealing element (5) in which the respective defect is identified, for marking (26) the respective identified defect, said region being smaller in a cross section of the sealing element (5) than a cross section of the sealing element (5).

Technical Field

The invention relates to a method for producing a seal, in particular for a door or a door frame of a motor vehicle, comprising the following steps: providing a shearable sealing element, inspecting the sealing element for defects, marking each identified defect at the sealing element, removing each longitudinal section of the sealing element having at least one marking, and shearing the sealing element to a desired length.

The invention further relates to a device for producing a seal for a door or a door frame of a motor vehicle, in particular for carrying out the method described above, wherein the device has: a first inspection device for detecting defects in or on the strip-shaped, cuttable sealing element; and marking each identified defect site of the sealing element at the sealing element; the second checking device is used for detecting the corresponding mark; and a repair device for removing each longitudinal section of the sealing element having at least one defect site marking.

Background

Methods and devices of the type mentioned at the outset are already known from the prior art. Thus, for example, publication EP 1733839 a1 discloses a method for forming a seal at a seal carrier (Dichtungstraeger), in particular at a vehicle door or vehicle body section (karossiereausschnitt), wherein a strip material (linear material) forming the seal is unwound from a reel or lap, the unwound strip material is fed to the mentioned carrier, is continuously connected to the carrier in the strip longitudinal direction, and an end section corresponding to the length of the seal is cut out of the fed strip material by a separating device. Furthermore, the unwound strip material is inspected for defects by an inspection device before being connected to the carrier, the end sections of the strip material determined to be defective are separated and sorted out as scrap. In order to enable targeted removal of strip sections, sections identified as defective, i.e. longitudinal sections with defective sites, are marked.

Disclosure of Invention

The object of the present invention is to provide an improved method and an improved device which ensure a permanently and reliably identifiable marking on the sealing element in order to enable targeted removal of defective longitudinal sections of the sealing element, so that the seal formed by the sealing element at the door or at the door frame then permanently ensures the desired sealing effect.

The object is achieved according to the invention by a method having the features of claim 1. This has the advantage that the respective defect is marked permanently and clearly, so that in a further method the marking is reliably recognized and the sealing element is reliably repaired by removing the longitudinal section with the marking. According to the invention, this is achieved in that, in order to mark the respectively identified defect, a region of the sealing element which is located in a longitudinal section of the sealing element in which the respective defect is identified is removed, which in the cross section of the sealing element is smaller than the cross section of the sealing element. The invention provides that, for marking, the region of the sealing element removed is used for marking the defect. In this case, the regions of the sealing element which are located in the longitudinal section of the sealing element in which the respective defect is also identified are removed in a targeted manner. The removal of this region is carried out in such a way that the sealing element is at least substantially retained in the longitudinal extension, so that no breaking of the sealing element due to the marking occurs. The sealing element is thus also retained, in particular as a strip profile or strip material, after removal of the selected region. However, the defect site is unambiguously marked by removing this region, so that it is simply determinable or identifiable by a subsequent further inspection process, for example if there is a relatively large period of time (e.g. days, weeks or months) between marking of the defect site and further application of the sealing element. This is achieved by removing a region of the marking from the material of the sealing element, which marking is permanently present and can also be reliably detected in a short time by a further inspection process.

Preferably, the area is removed independently of the respective detected defect site with a preset minimum size. The region to be removed or removed thus has a minimum size which is preset independently of the respective detected defect site. This minimum size ensures that the marking can be reliably identified in any case in the subsequent checking step. In this way, for example, the circular region is always removed from the sealing element with a predetermined minimum diameter or radius.

Furthermore, it is preferably provided that the same region is removed in the cross section of the sealing element independently of the respectively detected defect. Thus, the same region or cross-sectional area is always removed, viewed in cross section of the sealing element, independently of in which longitudinal section the defect is located. This simplifies the subsequent inspection in that the sealing element does not have to be monitored in full for the presence of the marking(s). But rather it is assumed that the marking (if it is actually present) is located in a predetermined region, for example on one or the other longitudinal side, in the head region or in the foot region of the sealing element. In this way, the effort required for checking the seal element markings and for producing corresponding markings is minimized. This results in cost and efficiency advantages in the production of the seal.

Furthermore, it is preferably provided that only the region of the sealing element having the respective defect is removed in the cross section of the sealing element. The position of the removed region or the arrangement in the cross section of the sealing element is therefore dependent on the respectively detected defect point, whereby a particularly targeted, precise marking of the defect point is advantageously achieved. This also results in the advantage that, for example, if a defect is located in an uncritical region of the sealing element, it can be evaluated as uncritical, so that removal of the longitudinal section with the defect is dispensed with. Thereby reducing waste and material costs. Optionally, in order to mark the identified defect, a plurality of regions of the sealing element are removed in the associated longitudinal section of the sealing element, in order to, for example, enable monitoring the marking of the sealing element at only one side of the sealing element in a subsequent inspection step to be sufficient to detect the marked longitudinal section of the sealing element. In this way, the respective defect sites are marked, for example, at both longitudinal sides of the sealing element, at all four lateral sides of the sealing element or only at the upper and lower sides of the sealing element, or at the longitudinal and lower sides or the longitudinal and upper sides, etc. The sealing element may also be marked at more than just two sides (viewed in cross-section).

According to a preferred development of the invention, the selected regions are removed by blanking (Stanzen). Thereby, a simple and time-saving step is provided for marking the sealing element or the defective portion of the sealing element.

According to another embodiment of the invention, the region is removed by cutting. Thereby, an accurate method, in particular with regard to dimensional variations of the area, is provided for marking the sealing element.

In particular, the area is removed by water cutting, laser cutting or mechanical cutting. This makes it possible to remove this region at the sealing element in a cost-effective and reliable manner.

Furthermore, it is preferably provided that this region is removed by a drilling or milling process. This advantageously makes it possible to remove this region in a particularly targeted manner, possibly also in different sizes, in particular depending on the size of the respective defect.

In particular, the free ends of the sealing element which are left behind by cutting off the marked longitudinal section of the sealing element or strip material after passage are connected to one another before cutting out the sealing element. By removing the longitudinal section which identifies the defect location, the sealing element is broken at two locations, so that the longitudinal section between the separation locations can be removed and the resulting free ends of the sealing element (which face one another) are connected to one another in order to close the sealing element again in the longitudinal extension. The strip-shaped configuration of the sealing element is thereby retained and the sealing element can be rolled up again, for example after marking or removal of the longitudinal section with the defect and subsequently be provided for producing a seal or for cutting.

The device according to the invention with the features of claim 10 is in particular configured to carry out the method according to the invention. For this purpose, the device is characterized in that the marking device is configured to remove, in order to mark the respectively identified defect, an area of the sealing element which is located in a longitudinal section of the sealing element in which the respective defect is identified, which is smaller in cross section than the sealing element. The advantages already mentioned are thereby obtained. In particular, the device also has an application device (applicative vorticichsung) which is designed to cut the sealing element to a desired length and to be attached to a door or a door frame of a motor vehicle.

Drawings

Further advantages and preferred features and combinations of features result, inter alia, from the preceding description and from the claims. The invention will be explained in detail below on the basis of the drawings. Wherein:

figure 1 shows an advantageous device for producing a seal at a door or door frame of a motor vehicle,

FIG. 2 shows a cross-section through a sealing element forming a seal, an

Fig. 3A to 3D show different embodiments of advantageous methods for producing a seal according to the cross section of the sealing element.

Detailed Description

Fig. 1 shows a simplified illustration of a device 1 for producing a seal 2 at a door 3 of a motor vehicle, which is not shown in detail here. The plant 1 has a plurality of devices which may be in one production line or may also be present separately from one another (for example in different plants, etc.). The device 1 is in particular divided into two parts, wherein the first part involves providing a marked strip-shaped sealing element and the second part involves the application or fitting of the sealing element for forming the seal 2 at the door 3.

The first part of the apparatus 1 has a first inspection device 4 to which a strip-shaped sealing element 5 (which may also be referred to as an endless sealing element in this respect) is fed. The inspection device 4 has a component, in particular a camera 6, by means of which the presence of defective regions of the sealing element 5 (for example cracks, material leaks (Materialschwund), etc.) can be inspected. In particular, the inspection device 4 has a plurality of cameras 6 in order to be able to detect the sealing element 5 at a plurality of different sides, in particular simultaneously, in order to identify each defect site.

Subsequently, the sealing element 5 is fed to a marking device 7, which provides the previously identified defect at the sealing element 5 with a permanent mark 26. The marking device 7 can be designed as a first unit 8 together with the inspection device 4, so that there is no need to move the sealing element 5 or to move it from one device to the next in order to detect a defect in order to mark it. If a defect is detected by the camera device 6, the camera 6 is replaced by a tool device (Werkzeugeinrichtung)9 of the marking device 7, so that the detected defect can be processed by the tool device 9, as will be explained in more detail below. However, if the devices 4 and 7 are designed separately from one another or arranged at a distance from one another so that the sealing element 5 has to be guided from one device to the other, the previously marked defective region is stored by the device 4 and the position of the defective region with respect to the arrangement of the tool device 9 is monitored as a function of the conveying speed of the sealing element 5 until the defective region is located opposite the tool device 9, so that the tool device can now machine a longitudinal section of the sealing element 5 having the defective region. The defect or the sealing element 5 is machined in the longitudinal section of the defect by the tool device 9 in such a way that the region 27 of the sealing element 5 is removed, as will be explained in detail in particular after fig. 3A to 3D. In any case, a visually easily identifiable processing of the sealing element 5 is carried out, which does not disappear after a long service life (Standzeit) of the sealing element 5 and also cannot be washed off or covered by dirt deposits.

After the marking, the sealing element 5 is guided further to a collecting device 10, which is in particular designed as a winding device, on which the sealing element 5 is wound up, in particular in a predetermined length. The so produced roll 11 is fed to the second part of the apparatus 1. The sealing element 5 marked there is now provided as a strip element in the form of a coil drum 11, from which the sealing element 5 is now unwound for feeding to an application device 12, which guides the sealing element 5 to the door 3, for example by means of a movable or articulated robot arm 13, fixes it there and cuts it to a predetermined length to form the seal 2.

Before the sealing element 5 is fed to the application device 12, however, the sealing element 5 passes through a repair device 14, which has a further inspection device 15 with, in particular, an image capture device 16, and a separating device 17.

The camera device 16 is configured to detect the previously generated marking 26 of the sealing element 5. Preferably, the marking 26 is produced by the marking device 7 always at the same location of the sealing element 5 (viewed in cross section of the sealing element 5), so that only one camera 16 is required in order to reliably detect the marking of the sealing element 5.

The separating device 17 is configured to cut out a longitudinal section 18 of the sealing element 5 from the sealing element 5 and to engage then remaining free ends of the sealing element 5 with one another, so that in turn a strip-shaped (Strangform) of the sealing element 5 is produced. This is shown in simplified form in fig. 1. For the separation, the separating device 17 has, for example, one or more cutting knives, by means of which the sealing element 5 can be completely broken at two points, so that the longitudinal section 18 located between the separation points can be removed. Subsequently, the now free ends 25 of the remaining sealing elements 5 are brought together and, for example, welded to one another or connected to one another in a simple manner, so that the strip shape continues.

The preceding advantageous marking 26 ensures that the longitudinal section in which the defect is present in the sealing element 5 is reliably and permanently marked in such a way that it can be reliably and quickly detected by the inspection device 14.

Fig. 2 shows an embodiment of the sealing element 5 in a cross-sectional view. The sealing element 5 has in particular a plurality of segments and is constructed overall in one piece in the form of a strip profile, in particular an extruded profile (strangpressprofile) or an extruded profile (extrusionsprodil). According to this exemplary embodiment, the sealing element 5 has a U-shaped sealing end 19 which is intended to be pressed against the door frame and is elastically deformed in order to achieve a surface-shaped abutment against the door frame, which also forms the seal 2. The sealing element 5 is designed as an elastically deformable hollow body. As a further section, the sealing element 5 has a sealing element foot 20, which serves as a carrier for the sealing element 5 at the door 2. In this way, the support can be inserted (and can be welded or glued, for example) into a recess provided for this purpose of the door 2, for example, in some regions in a form-fitting manner with a corresponding retaining projection (Haltevorrsprung) 21, in order to ensure that the sealing element 5 is securely locked on the door 2.

By means of the marking device 7, at least one region 27 of the sealing element 5 is now (as already explained) removed in cross section, as shown in the exemplary embodiment according to fig. 3A to 3D.

In this case, a region 27 which is smaller than the cross section of the sealing element 5 itself is always removed, so that, viewed in the longitudinal extension, the sealing element 5 is at least approximately retained and is interrupted in only a part of the cross section by the removed region 27 only over a shorter longitudinal section, so that the strip shape of the sealing element 5 is maintained and thus the operability or operation of the sealing element 5 is maintained. In particular, it is thereby additionally ensured that the sealing element 5 is rolled up and unrolled as a strip profile or strip element.

According to the exemplary embodiment of fig. 3A, the region 27 at the tip 22 of the sealing section 19 is removed vertically from above in fig. 3A as a marking 26 in the longitudinal section 18 with the defect.

According to the embodiment of fig. 3B, the regions 27 in the longitudinal sides 23 and/or 24 of the sealing element 5 are removed. In particular, a region 27 is removed in each of the two longitudinal sides 23, 24.

In particular, in the exemplary embodiment of fig. 3A and 3B, the region 27 is removed from the sealing element 5 by means of drilling or milling, wherein in the exemplary embodiment according to fig. 3B two regions 27 or a plurality of regions 27 can be removed in both longitudinal sides 23,24 by means of a single drilling process. For this purpose, these regions are located in particular in alignment with one another in the sealing element 5.

According to the embodiment of fig. 3C, the area 27 is removed by a blanking process. According to this embodiment, the tip 22 of the sealing element 5 is punched out here.

In the embodiment of fig. 3D, instead, the seal foot 20 is removed by a blanking process. The marking 26 can in any case be produced simply and cost-effectively and can be recognized permanently.

These embodiments have in common that by removing a corresponding region 27 of the sealing element 5 in the cross section of the sealing element 5 to produce a corresponding marking 26, the marking 26 or the absence of the region 26 at the sealing element 5 can be clearly identified by the inspection device 14, so that the longitudinal section 18 thus marked can be reliably removed by the separating device 17.

Alternatively to the above described embodiment of fig. 1, the repair device 14 is located in the first part of the apparatus 1, so that the ready-made reel 11 with the sealing band or sealing element 5 without defects is delivered to the second part.

List of reference numerals

1 apparatus

2 sealing element

3 door

4 inspection device

5 sealing element

6 vidicon

7 marking device

8 units

9 tool device

10 collecting device

11 winding drum

12 applicator

13 mechanical arm

14 repair device

15 inspection device

16 image pickup device

17 separating device

18 longitudinal section

19 sealing section

20 sealing element foot

21 holding projection

22 tip end

23 longitudinal side

24 longitudinal side

25 end part

26 mark

Region 27.