Device and method of crimping

Abstract

The present invention relates to a method for crimping (100) a crimping accessory (200) being crimped onto a leather support (990) using a tool and a crimping device. The crimping method (100) comprises steps of selecting (110) the crimping accessory (200) and / or the crimping tool, establishing (120) a set of crimping parameters (190) as a function of the selected accessory (200) and / or the selected tool (300), and applying (130) the set of parameters (190) to the selected accessory (200) and / or the selected tool (300).

Description

Scope of the invention

[0001] The field of the present invention relates to fastening methods, and more particularly to crimping methods. It relates particularly, but not exclusively, to the field of riveting machines. Previous art

[0002] Nowadays, rivets are attached to substrates such as leather using manual or pneumatic methods. These methods offer limited precision, are not very ergonomic, and are time-consuming. Furthermore, they lack any way to detect potential crimping defects. The machines using these methods cannot guarantee consistent application because all operators can modify the parameters.

[0003] Furthermore, in a leather goods customization process, for example, it's not possible to set different rivets on the same leather item while applying the correct setting pressure and / or setting stroke. Indeed, if these parameters, or at least one of these setting parameters, are not correctly applied to the rivet, it will eventually detach from the item. And one of the criteria for judging the quality of a finish is its durability.

[0004] US2014 / 025196A1 discloses an arc welding method that includes a label electrode attached to a specific welding support position. This method is not suitable for properly setting rivets on leather goods.

[0005] US patent 2011 / 113613A1 discloses a method for assembling a bolt that includes a step of recognizing the screw and nut using a reading system. Such a method is not suitable for the fine crimping of rivets on a leather article. Description of the invention

[0006] The present invention aims to resolve all or part of the aforementioned drawbacks in the form of a method for crimping a crimping accessory onto at least one support, preferably leather, as described in claim 1.

[0007] Thus, thanks to this arrangement, the crimping of the crimping accessory onto the support is carried out according to a set of crimping parameters depending on the crimping accessory selected and / or the crimping tool selected.

[0008] According to one embodiment, the set of crimping parameters is a function of time.

[0009] The crimping pressure and stroke are determined by the selected crimping accessory and / or crimping tool.

[0010] According to one embodiment, the selection step includes a step of identifying the selected crimping accessory and / or the selected crimping tool.

[0011] Thus, thanks to this provision, the selected crimping accessory and / or the selected crimping tool are identified so as to correctly apply the set of crimping parameters.

[0012] According to one embodiment, the identification of the crimping accessory and / or crimping tool is carried out by optical identification, electrical identification, radio identification and / or magnetic identification.

[0013] Thus, thanks to this provision, the selected crimping accessory and / or the selected crimping tool are identified so as to correctly apply the set of crimping parameters.

[0014] According to one embodiment, the identification of the selected crimping tool is carried out by the identification of an identification element.

[0015] Thus, thanks to this provision, the selected crimping tool is identified so as to correctly apply the set of crimping parameters.

[0016] According to one embodiment, the identification of the selected crimping accessory is carried out by identifying an identification element.

[0017] Thus, thanks to this provision, the selected crimping accessory is identified so as to correctly apply the set of crimping parameters.

[0018] The present invention relates to a crimping device for a crimping accessory on at least one support as described in claim 8.

[0019] Thus, thanks to this arrangement, the crimping of the crimping accessory onto the assembly is carried out according to a set of crimping parameters depending on the crimping accessory selected and / or the crimping tool selected.

[0020] According to one embodiment, the selection member is an assembly member configured to receive the crimping tool capable of crimping the crimping accessory onto said at least one support.

[0021] Thus, thanks to this arrangement, the crimping tool is identified when it is assembled to the crimping device.

[0022] According to one embodiment, the selection element is an optical device, an electrical device, a radio device and / or a magnetic device configured to identify the selected crimping accessory and / or the selected crimping tool.

[0023] Thus, thanks to this provision, the selected crimping accessory and / or the selected crimping tool are identified so as to correctly apply the set of crimping parameters.

[0024] Other features and advantages of the invention will become more apparent from the following description of an embodiment of the invention given by way of non-limiting example. List of figures

[0025] The invention will be better understood with the aid of the detailed description set forth below opposite the drawing, in which: there figure 1 represents an example of a crimping process 100according to the invention; the figure 2 exhibits an example of a crimping device 400 and crimping tool 300 according to one embodiment; the figure 3 shows an example of crimping according to the invention, when the crimping tool 300 according to the invention and / or the crimping accessory 200 according to the invention; the figure 4 illustrates an example of a crimping accessory 200 ; there Figure 5 presents an example of a servo-controlled crimping process according to the invention.

[0026] In the detailed description that will follow of the figures defined above, the same elements or elements fulfilling identical functions may retain the same references in order to simplify the understanding of the invention.

[0027] There figure 1 represents a diagram of the crimping process 100 according to the invention. This crimping process, implemented by a crimping device400, is intended for crimping a crimping accessory 200, represented on the figure 2 , on at least one medium 990 leather.

[0028] The crimping device 400, mentioned previously and represented on the figure 3 includes a control unit 410, configured to implement the crimping process 100, and a selection body.

[0029] This selection device can, by its configuration, offer a selection or select the crimping accessory. 200 and / or a crimping tool 300.

[0030] This selection stage 110 may include an identification step 115 of the crimping accessory 200 and / or the crimping tool 300 so that the crimping accessory and / or crimping tool are identified.

[0031] Indeed, the selection body 420may take the form of an assembly component 421 configured to receive an identification device 315 of the crimping tool 300 in the manner of a key and a lock, or two complementary objects, so that the 300 crimping tool is identified when assembled with the crimping device. Indeed, the identification element 315 allows identification of the crimping tool 115 300 before or during its assembly to the selection organ 420.

[0032] This identification 115 of the crimping accessory 200 and / or the crimping tool 300 can also be achieved by optical identification 116, electrical identification 117, radio identification 118 and / or magnetic identification 119.

[0033] Indeed, the selection body 420 may also include: an optical device 416 such as a barcode reader, QR code reader and / or a camera for example, an electrical device 417 such as a chip reader, and / or an impedance reader for example, a radio device 418 such as an RFID tag reader, for example, and / or a magnetic device 419 such as a magnetic tape player, for example.

[0034] These different options allow the selection body 420 to select by identifying or identifying the crimping accessory 200 and / or the crimping tool 300. In return, the crimping accessory 200 may include an identifying element 215 configured to be identified as a barcode, QR code, visual features recognizable by a camera, chip, specific impedance, RFID tag and / or magnetic stripe.

[0035] In parallel or independently of the identification element 215, the identification body 315 may include a barcode, a QR code, visual features recognizable by a camera, a chip, a specific impedance, an RFID tag and / or a magnetic stripe to be able to be identified.

[0036] In addition to identifying the crimping accessory 200 and / or the crimping tool 300, the identifying element 215 and / or the identification body 315 include a set of 190 crimping parameters so that the crimping accessory 200 be properly set.

[0037] This 190 crimping parameter set includes a crimping pressure parameter 193 and a crimping stroke parameter 194 so that the crimping pressure and stroke are achieved according to the crimping accessory200 selected and / or crimping tool 300 selected when the crimping process 100 is being implemented.

[0038] This crimping process 100 includes several steps, such as a step of selecting the crimping accessory 200 and / or a crimping tool 300, As described previously, a step of establishing, applying and maintaining the set of parameters seen previously.

[0039] Indeed, when the crimping accessory 200 is selected to be set on at least one support 990 in leather, or on a complex, that is to say on a stack of leather supports including at least one first leather support 991 and a second leather support 992 as shown on the figure 1 , or when a crimping tool 300 to crimp the crimping accessory 200is selected, or when both are selected, an establishment step 120 follows the selection step 110.

[0040] During this establishment stage 120, the set of crimping parameters 190 is established based on the crimping accessory 200 selected and / or crimping tool 300 selected and more specifically based on the identifying element 215 and / or the identification body 315. Indeed, this establishment step uses the identification element 215 and / or the identification body 315 to find out the crimping parameters 190 or to use crimping parameters 190 located in internal memory or in a database.

[0041] Once established, the crimping device applies to the crimping accessory 200,using the crimping tool 300 optionally selected, the set of crimping parameters 190 set up so as to crimp the crimping accessory 200 to the support 990. Application 130 of this set of crimping parameters 190 can be done depending on the time 192 or according to a time-dependent curve as shown on the figure 4 .

[0042] Applying this crimping pressure parameter 193 is controlled by an open-loop control system, represented on the Figure 5 , so as to control the crimping of the crimping accessory throughout this application step 130.

[0043] Indeed, when the crimping pressure parameter 193 is controlled by an open-loop servo system, maintaining the set of crimping parameters 190is triggered when the crimping stroke encounters a movable stop element 493 This has the effect of maintaining, or stabilizing, all the crimping parameters during a maintenance period. 191.

[0044] The crimping stroke parameter 194, As for it, it is controlled by an open-loop servo system, and preferably by the movement of the movable stop element. 493 which allows the crimping stroke to be stopped and prevents marking the support, i.e. the leather, if the crimping pressure control is too long or if the crimping accessory were to suddenly fail.

[0045] The application 130 of this set of crimping parameters 190 to the crimping accessory 200 and followed by a step to maintain this set of crimping parameters 190 during a maintenance period 191so that the deformation of the crimping accessory 200 is carried out uniformly.

Claims

1. A method for crimping (100) a crimping accessory (200) on at least one support (990) made of leather, the crimping method (100) being implemented by a control unit (410) and comprising the following steps of: - selecting (110) a crimping accessory (200) and a crimping tool (300) configured to crimp the crimping accessory (200) on at least one support (990); - establishing (120) a set of crimping parameters (190) as a function of the selected crimping accessory (200) and / or the selected crimping tool (300), the set of crimping parameters (190) comprising a crimping stroke parameter, and a crimping pressure parameter (193), said crimping pressure parameter (193) being controlled by an open-loop servocontrol; - applying (130) to the selected crimping accessory (200) and to the selected crimping tool (300) a crimping command determined as a function of the set of crimping parameters (190) established so as to crimp the crimping accessory (200) to said at least one support (990); and, - maintaining the set of crimping parameters (190) applied during a maintaining period (191), the crimping method (100) being characterized in that the maintaining of the set of crimping parameters (190) is triggered when the crimping stroke encounters a movable stop member (493).

2. The crimping method (100) according to claim 1, wherein the application (130) of the set of crimping parameters (190) to the crimping tool (300) is performed as a function of time (192).

3. The crimping method (100) according to claim 1, wherein the crimping stroke parameter (194) is controlled by the displacement of the movable stop member (493).

4. The crimping method (100) according to claim 1, wherein the selecting step (110) comprises a step of identifying (115) the selected crimping accessory (200) and / or the selected crimping tool (300).

5. The crimping method (100) according to claim 4, wherein the identification (115) of the crimping accessory (200) and / or the crimping tool (300) is carried out by optical identification (116), electrical identification (117), radio identification (118) and / or magnetic identification (119).

6. The crimping method (100) according to claim 4, wherein the identification (115) of the selected crimping tool (300) is carried out by the identification of an identification member (315).

7. The crimping method (100) according to claim 4, wherein the identification (115) of the selected crimping accessory (200) is carried out by identifying an identification element (215).

8. A device (400) for crimping a crimping accessory (200) on at least one leather support (990), the crimping device (400) comprises: - a control unit (410); the control unit (410) is configured to implement the crimping method (100) according to any one of claims 1 to 7; - a selection member (420) configured to select the crimping accessory (200) and the crimping tool (300) configured to crimp the crimping accessory (200) on the at least one support (990) according to the set of crimping parameters (190) depending on the selected crimping accessory (200) and / or the selected crimping tool (300); the crimping device (400) being characterized in that it further comprises a movable stop member (493) configured to control the crimping stroke of the selected crimping tool (300) and / or the selected crimping accessory (200) on the at least one support (990).

9. The crimping device (400) according to claim 8, wherein the selection member (420) is an assembly member (421) configured to receive the crimping tool (300) capable of crimping the crimping accessory (200) on said at least one support (990).

10. The crimping device (400) according to claim 8 or 9, wherein the selection member (420) is an optical device (416), an electrical device (417), a radio device (418) and / or a magnetic device (419) configured to identify the selected crimping accessory (200) and / or the selected crimping tool (300).

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