TW434162B - Forming method of a pair of symmetrical steering wheel slipcovers - Google Patents

Abstract

A forming method produces a pair of symmetrical steering wheel slipcovers at one time using two matched rollers. A foamed material is pressed by the two matched rollers such that a symmetrical compressive deformation is produced on the foamed material corresponding to the roller shape. It is then cut to simultaneously form two semi-finished slipcovers with symmetrical wavy surfaces. Finally, striping the semi-finished products into slipcovers according to the prescribed specifications. According to the above forming method, it can effectively reduce the material loss and double the number of products. Thereby, it saves the manufacturing cost and increases the competition capability.

Description

434162-, V. Description of the invention (l) The present invention relates to a method for forming a protective cover layer of a steering wheel cover of a car, and more specifically, it refers to a method of processing and applying a foam material completely and obtaining a double number of protective layers at the same time. In order to effectively remove material loss and save costs, the method of forming a bi-symmetrical skin layer for a steering wheel cover of a car. According to the application of foam, the application range of foamed material is very wide. Because of its unique advantages in touch and softness, it has been widely used in the skin layer on the surface of automobile steering wheel covers to improve the driver's grasp of the steering wheel. Driving comfort; continue. Please refer to the figure-shown. Currently, foam is used as the skin layer of the steering wheel cover 10 of the car. In the shape, a wavy skin layer formed side by side along the circumference of the steering wheel cover 10 丨 丨The wave-like skin layer that best meets the human hand's grip "Ran"〗 In the current processing method and technology, it has its unpainted ideals; that is: Please refer to the second figure for cooperation. The skin layer π is mainly fed to the surface of a foamed material 30 by a grinding wheel 20 and the concave and convex grinding portions 21 formed on the periphery thereof, and the foamed material 30 is opposed to each other by its concave 'convex grinding portion 21'. The surface part is abraded, so that the surface of the foamed material 30 forms a concave and convex wavy surface 31. The semi-finished product is then “striped” into a protective skin layer of a predetermined size and specifications. Beyond 12 Week; the job is 'the sheath layer processed by the above molding method, and the foam material 30 is ground during the processing to achieve the sheath layer, and the surface has a wavy surface.' Therefore, when the grinding wheel is 2 When the surface of the foamed material 30 is relatively ground, the foamed material 30 that is removed during the process will be relatively finer by the grinding of the grinding wheel 20. Such dust is often not completely collected and scattered in the factory. It is difficult to ignore the overall environment of the factory or the health hazards of the people in the factory.

434162-3

At the same time, since this kind of skin layer 11 is the raw material of foaming rod 30, it is necessary to consider the loss, so as to avoid that only a single pair of skin layer 11 can be obtained after processing the ground skin material 30. Material 30 is limited by the original specifications, so the loss of materials and costs are very heavy. In view of this, the inventor of this case has the birth of the present invention in the development and manufacturing of related products. Processing by grinding, the industry is prepared to consider that the thickness of the material thickness layer 11 after the surface grinding is insufficient, and the semi-finished product of each foamed sheet can be cut and stripped to form the number of the skin layer 11 can only be issued Relative to the industry 'its burden and uneconomical. After careful consideration and years of experience, I continued to study the trial work. Finally, the main purpose of the present invention is to provide a method for forming a double-symmetrical skin layer for a steering wheel cover of an automobile. A foamed material, after the foamed material is relatively compressed and deformed according to the shape of two rollers, it is cut and sliced to make the cut surface of the foamed material relatively wavy to form two symmetrical shapes at the same time. The semi-finished product of the skin layer, which effectively removes the material loss caused by the processing process, and simultaneously obtains double the number of skin layers, which effectively saves the cost. The reason is that according to the present invention, a method for forming a car steering wheel cover skin layer includes the following steps: (1) selecting foamed material: selecting a foam material of a predetermined size; (2) conveying pressure: the above foaming material Feed into a light pressing device. The roller pressing device is composed of two rollers arranged opposite to each other. One of the rollers has a plurality of convex pressing portions arranged side by side at a predetermined interval in the axial circumference, and the other roller is opposite. There are several concave bearing parts corresponding to the convex pressing parts side by side. When the foam material is fed,

434l6 2- ^ V. Description of the invention (3) 'When being rolled and pinched to the rain wheel, it was pressed by the convex part and received on the opposite concave part, so that the foamed material was smooth. Compression deformation along the shape of the two rollers; (3) Cutting and segmentation: a knife body is arranged in parallel between the two rollers, and the blade portion of the knife body is located approximately at the middle of the two rollers. When the two rollers are pinched by pressure, the front end surface of the roller touches the blade of the knife body and is cut into two. At the same time, when the foam material is cut and fed to the outside of the rolling device, it is no longer affected. During compression, it is restored to the uncompressed state due to the elastic recovery effect, so that the cut surface of the foamed material is formed into a wavy and semi-finished skin layer with two symmetrical shapes; (4) Cutting and slitting: Cover the finished product of two protective skin layers with predetermined dimensions, and cover the steering wheel cover on the outer periphery of the inner shell. After the semi-finished product of the leather layer is cut into strips, the non-cutting of the finished product of the leather layer is performed, and then it is sewn into one body. With the above processing and molding method, there can be no material damage in the process and the processing can be performed at the same time. ; Cortical products, for reducing processing costs, === the amount of helpers. In order to further understand the process and operation of the present invention, a better embodiment is provided and the following are expected: I believe the above-mentioned features of the present invention; Π 烊: Description Therefore, it is necessary to understand the characteristics of β 'knife in depth and concretely.

Page 6 434162-7 V. Description of the invention (4) The first picture is the appearance diagram of the steering wheel cover of a car. The second figure is a schematic diagram of the processing state of a conventional wavy skin layer. The third diagram is a simplified appearance of the processing device in the preferred embodiment of the present invention. Intent β The fourth circle is a schematic diagram of the state in which the foamed material is processed into a skin layer in the preferred embodiment of the present invention. The fifth circle is a schematic view of the state where the foamed material is pressed by the stick pressing device in the preferred embodiment of the present invention. The sixth figure is a schematic plan view of the end side of the foamed material cut into two skin layers in the preferred embodiment of the present invention. The seventh aspect is a schematic circle of the state in which the holster is relatively assembled on the steering wheel cover in the preferred embodiment of the present invention. The eighth figure is a schematic view 7F of the state of the roller device relative to the rolled foamed material in another embodiment of the present invention. The ninth figure is a schematic diagram showing the state of the pressure-monitoring device relative to the pressure of the foamed material in another embodiment of the present invention. Contrast number in the drawing: 10 ---- steering wheel cover 11——skin cover 12____ inner ring 20 ---- grinding wheel 21 ---- grinding part 30 ---- foaming material 31 --- -Wave surface

Page 7 ____— & Jade, description of the invention (5) 4〇——Foaming 4 01 --- Front end surface 402 — A cut surface 5〇__Rolling device 51 --- -Upper stick wheel 511--convex pressing part 5 2 ___-lower parent wheel 521--concave bearing part 6 0 ----knife body g] ---- blade part s ----- compression layer 7〇 > 71 ---- Semi-finished product of the skin layer 80 -... Steering wheel cover gj 82 ---- Skin layer 52a --- Down grain wheel 52la-Concave bearing part 8 3 --- · -Inner ring 5ib— -Up Roller W 1 b—concave bearing portion 511 b—convex pressing portion 52b-- 'lower roller. First, please refer to the third and fourth circles, as shown in FIG. The main steps of the skin layer forming method are as follows: (1) Selecting a foamed material: Take a predetermined size of the EVA foamed material 40 which is approximately rectangular block-shaped. (2) Conveying and rolling: Conveying the above-mentioned foamed material 40 to a rolling device 50. The rolling device 50 is composed of upper and lower rollers 5 and 52 which are oppositely arranged. Among them, the upper roller 5 1 A plurality of convex pressing portions 511 are provided in parallel at an equidistant position along its axial circumference. The convex pressing portions 511 are processed into a semi-circular shape. In addition, the lower roller 5 2 is oppositely disposed below the upper roller 5 丨. A plurality of recessed bearing portions 521 are also arranged relatively parallel to the axially circumferentially equidistant positions to correspond to the convex pressing portions 511. 'Continue' Please cooperate with the fifth figure as shown in the figure. When the foamed material 40 is fed to the top When the lower rollers 51 and 52 are pinch-rolled, the top surface of the foamed material 40 is subjected to a convex pressing portion.

43416 2-ϋ V. Description of the invention (6) 5 1 1 The squeezed part is compressed downward, and the opposite bottom part is just compressed and received on the recessed part 521 corresponding to the lower reporting wheel 52, so When the foamed material 40 is pinched by the rolling device 50, it is compressed and deformed by the corresponding shape between the upper and lower rollers 51 and 52. At the same time, the foamed material 40 is elastic and After compression sowing, its thickness will be relatively compressed and deformed. Therefore, when it is compressed by the two rollers 51 and 52, the position of each part will also form a compression layer S distribution with different thickness of the grinding layer (such as (Figure 4). (3) Cutting and slicing: A knife body 60 is arranged in parallel between the upper and lower rollers 5 丨 and 52, and at approximately the middle. The knife system rotates axially along the upper and lower rollers 51 and 52. At the same time, the The blade portion 61 of the blade body 60 is located approximately in the middle of the two rollers 51 and 52. The position is that when the foamed material 40 is pinched by the two rollers 5 and 52, the side end surface 4 0 1 After touching the blade portion 61 of the blade body 60, the blade body 60 will naturally be cut smoothly from the middle. At this time, as described above, the foam material 40 has different thicknesses in various positions after being squeezed. The compressed layer s is distributed. Therefore, when the blade 60 of the blade body 60 cuts the foamed material 40 sequentially, it means that the compression layer S with different thickness distribution is relatively cut. Therefore, when the foamed material 40 When the two rollers 51 and 52 are conveyed outward and the knife body 60 is cut, it is naturally divided into two pieces of semi-finished skin layers 70 and 71 (as shown in the sixth figure). 40 itself is elastic and can be compressed. Therefore, when the foamed material 40 is cut and conveyed to the outside of the two rollers 51 and 52 without being compressed by pressure, it will recover due to elasticity. It is used in an uncompressed state, so that 'the cut surface 402 formed when the compression layers s of different thickness distributions on the foamed material 40 are cut is also due to its elastic recovery and the different thickness distributions of the relative cuts. Produces a relative wave shape, and at the same time obtains

434 V. Description of the invention (7) The two semi-finished products of the two cortex layers of the symmetrical wave shape are 70 and 71. "(4) Cutting section: Please refer to the seventh figure. When the semi-finished skin layer 70, 71 is completed, we can divide the semi-finished skin layers 70, 71 according to the specifications and dimensions required by the steering wheel cover. Cut each strip into two protective skin layers 81'82 of predetermined size, and then cover the two protective skin layers η, 82 on the outer periphery of an inner ring 83, and sewn them into a steering wheel cover. 80. Secondly, 'the upper and lower rollers 51, 52 can also be processed into different shapes according to the different shapes of the wavy shape', the convex portion 511 and the concave portion 5 12 are processed into different shapes. "The concave part 521a of the lower roller 5 2 a can be processed into a semicircular groove; see also the ninth figure, the convex pressing part 511b of the upper roller 51b can also be formed into a pyramid shape , The concave receiving part 5 21 b of the lower roller 52 b has a concave concave groove shape. In this way, when the convex pressing part 511 and the concave receiving part 521 are used to relatively compress the foamed material 40, the foamed material is made. Generates compression layers S of different compression thicknesses, thereby providing more different types of wavy skin layers 81, 82 styles for consumption The choice of the user will help to improve the change of product style. Finally, it is worth mentioning again that 'foam material 40 has good compressibility and elastic recovery effect', so the invention uses two rollers to press 5 j, 52 convex pressure portions 511 and concave receiving portions 521 are arranged on top of each other to squeeze the foamed material 40 above and below. 'The foamed material 40 generates compression layers S of different thickness compression in each part due to the relative pressure spread. 'Furthermore, the knife vessel 60 is cut to different compression layers S when cutting the slice, so that the thickness of each part is different after being cut.' So, when it is not under pressure, it can recover by its elasticity Function to make

Page 10 4 Contains 5. Description of the invention (8) The cut surface 402 is shaped according to the original thickness that should be restored. Therefore, when I use the above method to form and process, I can use a foamed material 40 to process at the same time Obtain two semi-finished skin layers 70 and 71, and the semi-finished skin layers 70 and 71 can be processed into strips with predetermined specifications and wavy skins 81 and 82 for assembly on the steering wheel cover 80 respectively. In terms of processing, one piece of foamed material 40 can be processed into two pieces during processing, and both pieces can be used as the skin layers 81 and 82. Therefore, not only can one piece of foamed material 40 be effectively used to the maximum benefit. It can also remove the loss of unnecessary materials. It can also save more than half of the processing cost of each skin layer 81, 82. It is extremely helpful to the competition in the industry, and because it uses cutting processing to form, the process There is no problem with the traditional grinding method that causes dust to spread. To sum up, 'The present invention not only meets the industrial use value, but at the same time, it has not been found that the same or similar existence has been found by traversing relevant technical data and literature at home and abroad. Therefore, the present invention has already met the requirements of the invention patent, File an application. Only the "illustrations and descriptions disclosed above" are merely preferred embodiments of the present invention. When the present invention can be widely applied to various automobile steering wheel covers, the scope of this embodiment cannot be limited by this, that is, large Those who are familiar with this skill, the modifications or equivalent implementation changes made according to the spirit of the present invention should still be included in the scope of patent application in this case.

Claims (1)

6. Scope of patent application 1. A method for forming a double-symmetrical skin layer for a steering wheel cover of a car, the skin layer is covered by a seam on the outer periphery of the inner ring of the steering wheel cover; the main steps are as follows: 'U) Select foam Material: Select the foam material of the predetermined size; (2) Roller feeding: The foamed material is sent to a general pressure device. The roller device is composed of two rollers arranged opposite each other, one of which is a roller. There are several convex pressing portions arranged side by side at a predetermined interval around the axial direction of the wheel, and the other concave portions corresponding to the convex pressing portions are arranged side by side in the axial circumferential direction of the other roller. When the foamed material is fed to the roller between the two rollers, During pinching, it can be pressed by the convex pressing part and received on the opposite concave receiving part, so that the foamed material is squeezed and deformed along the two rollers; (3) Cut into pieces: two A knife body is arranged in parallel between the rollers. The two parts of the knife body are located approximately at the middle of the two rollers. When the foamed material is pressed by the two rollers, the front end face touches the knife portion of the knife body. To be cut-the knife is simultaneously, when the foam is cut and fed to the rolling device m is no longer pressurized, due to the recovery effect of the material to restore the room to no dust, and then the cut surface of the foamed material is formed into a wavy shape, and divided into two symmetrically shaped semi-finished skin layers; (4) cutting Slitting: The finished product of the protective layer of the two protective skins, and the rear surface is relatively covered with the steering wheel on the outer periphery of the inner ring. 2. According to the first bi-symmetrical skin layer forming method of the scope of the patent application, the semi-finished products of each layer are cut and stripped to become 'non-cutting of the finished skin layer product, and then stitched into a car steering wheel cover as described in one item. , The convex part of the roller is formed Page 12 4 3 4! 6 2-,, VI. Patent Application Fan Garden is semi-circular shape 'The concave bearing of the other roller is a groove. 3. According to a method for forming a double-symmetrical skin layer of a steering wheel cover for an automobile according to item 1 of the scope of the patent application, wherein the convex part of the one roller is formed into a pyramid shape, and the concave part of the other roller is a Concave grooved person. 4. A method for forming a bi-symmetrical skin layer of a steering wheel cover for an automobile according to item 1 of the scope of the patent application, wherein the foam material is an EVA foam material. 5. A method for forming a bi-symmetrical skin layer for a steering wheel cover of an automobile according to item 1 of the scope of the patent application, wherein the foam material is a PU foam material. Page 13