JP3948647B2 - Sheet material positioning method and positioning apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sheet material positioning method and positioning apparatus capable of positioning a relatively hard sheet material, such as a nonwoven fabric, felt, and a synthetic resin sheet, and a relatively hard sheet material such as a fiber plate and a resin plate.
[0002]
[Prior art]
For example, a luggage side trim or the like installed in a luggage room is a cold press mold having a desired mold surface shape after heat-softening a molded nonwoven fabric mixed with a thermoplastic resin or mixed with a binder fiber. It is formed into a desired shape by press molding.
[0003]
Conventionally, an outline of supplying a sheet material such as a formed nonwoven fabric to a cold press mold will be described with reference to FIG. 8. The sheet material 2 loaded on the original fabric cart 1 is supplied to the positioning device 3. In this positioning device 3, the positioning bar 5 is moved forward and backward by driving the four-way air cylinder 4 to position the sheet material 2 at an appropriate position, and then the sheet material 2 is held by the frame 6 and heated. Through the heating process by the furnace 7, the sheet material 2 is supplied to the forming die 8 in a softened state, and cold press molding is performed to a required shape.
[0004]
In the positioning device 3, positioning bars 5 are arranged on four sides around a square set table 3a, and as shown in FIGS. 9 and 10, the positioning bar 5 is moved forward in the direction of the arrow. Then, the sheet material 2 is positioned at an appropriate position on the set table 3a.
[0005]
[Problems to be solved by the invention]
However, in the configuration in which the cylinder drive type positioning bar 5 is arranged around the set table 3a, for example, a relatively hard sheet material has a waist and a horizontal one is effectively positioned. It has been pointed out that the material 2 is difficult to slide due to its low waist, or the sheet material in which the terminal warps and deforms cannot be positioned and the positioning accuracy is extremely poor. ing.
[0006]
For example, FIG. 11A shows a sheet material 2a made of PPO (polyphenylene oxide) resin used as a ceiling base material. If the end of the sheet material 2a is warped, the positioning bar 5 moves forward. However, the positioning bar 5 slides on the back surface side of the sheet material 2a and cannot press the sheet material 2a.
[0007]
Similarly, as shown in FIG. 11B, in the sheet material 2b made of a relatively soft material such as a carpet, the sheet material 2b itself is heavy, so that the terminal is curled even when pressed by the positioning bar 5. By just doing, the whole sheet material 2b is not pressed, and accurate positioning becomes difficult.
[0008]
The present invention has been made in view of such circumstances, and positioning of a sheet material that enables accurate positioning work even in a sheet material that is difficult to position due to warping deformation or curl deformation of the terminal. It is an object to provide a method and a positioning device.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 of the present application is a method for positioning a sheet material supplied to a mold by a conveying device, and is a sheet placed on a rectangular set table. The sheet material is positioned along the vertical and horizontal directions of the set table by advancing the positioning bars provided along the four sides of the set table with respect to the material, and the longitudinal direction of the set table. Is composed of two rows of pressing bars extending along the set table and two rows of pressing bars extending along the short direction of the set table. The pressing bar facing the entire surface of the set table is lowered by the lifting cylinder. And the positioning operation is performed while restricting the warping and curling of the sheet material.
[0010]
Here, as a sheet material to which the method of the present invention is applied, in addition to a soft sheet material such as a thermoplastic resin or a molded nonwoven fabric using a thermoplastic fiber as a binder, a felt, a rubber sheet, a resin sheet, PPO (polyphenylene oxide) ) It can also be applied to relatively hard sheet materials such as substrates.
[0011]
Further, as the mold, it can be applied to a wide range of molds such as a cold press mold, a hot press mold, and a vacuum mold.
[0012]
In the invention according to claim 2 of this application, the sheet material placed on the set table is slid by the free bearing provided on the set table, and the positioning operation is performed while regulating the curl of the sheet material. It is characterized by that.
[0013]
The invention according to claim 3 of the present application is a sheet material positioning device for positioning the sheet material supplied to the mold by the conveying device, and a rectangular set table on which the sheet material is placed, A positioning bar provided along the four sides of the set table and a cylinder for advancing and retreating the positioning bar; two rows of pressing bars positioned above the set table and extending along the longitudinal direction of the set table; It consists of an integrated structure with two rows of pressing bars extending along the short direction of the set table, and is composed of a pressing bar facing the almost entire surface of the set table and an elevating cylinder for driving the pressing bar up and down, during positioning operation along the vertical and horizontal direction of the sheet material by the positioning bar, pressing the sheet material from above by the pressing bar, warp, curl regulations Characterized in that it.
[0014]
The invention according to claim 4 of the present application is characterized in that a free bearing for sliding the sheet material is provided on the sheet material mounting surface of the set table during the positioning operation of the sheet material. .
[0015]
As apparent from the above configuration, according to the present invention, when the sheet material placed on the set table is pressed from the four sides by the positioning bar, the sheet material is pushed down from above by the pressing bar. Therefore, curling or the like does not occur and escape due to lifting can be avoided, so that the pressing force from the positioning bar can be appropriately applied to the sheet material.
[0016]
Furthermore, if a free bearing is provided on the set table, even if it is a sheet material that is difficult to slide without slipping, the sheet material smoothly slides on the set table, so there is no deformation such as curling and the The pressing force can be appropriately applied to the sheet material.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a sheet material positioning method and positioning apparatus according to the present invention will be described in detail with reference to the accompanying drawings.
[0018]
FIG. 1 is a plan view of a sheet material positioning apparatus according to the present invention, FIG. 2 is a side view of the positioning apparatus, and FIGS. 3 to 7 illustrate a series of operations in the sheet material positioning method according to the present invention. 3 is an explanatory view showing a state in which the sheet material is set on the positioning device from the raw fabric cart, FIG. 4 is an explanatory view showing the sheet material set on the positioning device, and FIG. 5 is an operation for positioning the sheet material by the positioning device. FIG. 6 is an explanatory view showing the action of the pressing bar in the positioning device, and FIG. 7 is an explanatory view showing a process of conveying the sheet material subjected to the positioning process to the heating furnace and the mold.
[0019]
First, a schematic configuration of the sheet material positioning device 10 according to the present invention will be described with reference to FIGS. 1 and 2. The positioning device 10 includes a fixed base 11 and a rectangular set table 12. Positioning bars 20 are installed along the outer periphery of the four sides of the set table 12.
[0020]
The positioning bar 20 is composed of a long metal plate having an L-shaped cross section composed of a horizontal mounting portion 20a and a pressing portion 20b extending vertically upward from the mounting portion 20a. A mounting portion 20a of the positioning bar 20 is fixed to the support arm 22 connected to the rod.
[0021]
When the positioning device 10 according to the present invention positions the sheet material S along the vertical and horizontal directions of the set table 12 with the positioning bar 20, the sheet material S is suppressed from being curled and warped, and the sheet material S is flattened. By maintaining the shape, the pressing force from the positioning bar 20 is accurately transmitted.
[0022]
For this purpose, in the positioning device 10 according to the present invention, the pressing bars 30 are arranged in two rows in the horizontal direction and two rows in the vertical direction, and the pressing bar 30 moves up and down by a predetermined stroke by the lifting cylinder 31.
[0023]
More specifically, the pressing bar 30 is made of a long metal plate as a raw material, and extends in two rows of pressing bars 30 a and 30 b extending along the longitudinal direction of the set table 12 and along the short direction of the setting table 12. It consists of four plate bodies of two rows of pressing bars 30c, 30d, and the pressing bars 30a, 30b, 30c, 30d are joined together by welding or the like at four intersecting portions to form an integrated structure.
[0024]
And two cylinders 31 for raising / lowering as the drive means of the above-mentioned press bars 30a-30d are provided, and in this embodiment, it is for raising / lowering to the upper surface of the center of press bar 30c, 30d extended along a transversal direction. The tip of the piston rod 31a of the cylinder 31 is fixed.
[0025]
By the way, although the slip performance varies depending on the rigidity of the sheet material S, a free bearing 13 is embedded in the upper surface of the set table 12 in the positioning device 10 according to the present invention. When a bulky soft sheet material is used, the sheet material S tends to curl due to the pressing force from the positioning bar 20, but the sheet material S slides smoothly on the set table 12 by this free bearing 13. To do.
[0026]
Next, a method for positioning the sheet material S using the positioning device 10 will be described. In addition, as a material applied to this method, a molded nonwoven fabric is used, and after a positioning process is appropriately performed by the positioning device 10 according to the present invention, a hot air heating process is performed, and then a desired shape is molded by a cold press molding die. Thus, the present invention is applied to a specific example of forming a luggage side trim.
[0027]
First, as shown in FIG. 3, the sheet material S loaded on the original fabric cart 40 is set on the set table 12 by the transport device 41. The transport device 41 is a type in which the sheet material S is held by the vacuum pad 42 by a vacuum suction force, but a clamp mechanism or a chuck mechanism may be employed.
[0028]
At this time, when the sheet material S is set on the set table 12, the pressing bar 30 positioned above the set table 12 is retracted to a position that does not hinder the sheet material S setting work.
[0029]
Then, as shown in FIG. 4, after the sheet material S is set on the set table 12, the pressing bar 30 is positioned above the set table 12 by a transport mechanism (not shown), and a switch (not shown) of the positioning device 10 is shown. 4), the advancing / retreating cylinder 21 and the lifting / lowering cylinder 31 operate, and the positioning bar 20 in FIG. 4 moves forward in the direction approaching the set table 12, and the pressing bar 30 also starts to descend.
[0030]
FIG. 5 shows a state in which the sheet material S is positioned at an appropriate position on the set table 12 by the positioning bar 20 and the pressing bar 30, and the pressing bar 30 contacts the upper edge of the vertical portion 20 b of the positioning bar 20. The action of the pressing bar 30 on the sheet material S is caused by a relatively hard material such as a PPO (polyphenylene oxide) resin sheet as shown in FIG. When the sheet material is likely to be deformed, the warped portion A is pressed downward by the pressing bar 30, and when the positioning bar 20 presses the sheet material S, the positioning bar 20 does not slide into the back side. The terminal of the sheet material S can be pressed appropriately.
[0031]
Further, as shown in FIG. 6B, when positioning a sheet material S made of a bulky molded nonwoven fabric or felt or the like as a molded nonwoven fabric used in the embodiment of the present invention, as shown in the figure. In addition, when the end of the sheet material S is pressed by the positioning bar 20, the sheet material S is a soft material and is a sheet material that is relatively heavy. By pressing the portion B downward by the pressing bar 30, the sheet material S slides in the direction of the arrow as shown by the solid line, and the sheet material S can be positioned with high accuracy.
[0032]
In this way, the pressing bar 30 presses the warped part A and the curled part B downward, and the pressing force from the positioning bar 20 is effectively applied to the sheet material S, so that accurate positioning can be achieved. It becomes possible. When the sheet material S is positioned on the set table 12, the soft sheet material S, which is particularly heavy due to the free bearing 13, is appropriately slid to be effectively positioned at an appropriate position.
[0033]
Next, as shown in FIG. 7, the sheet material S positioned at an appropriate position on the set table 12 by the positioning device 10 according to the present invention is transported by the transport device 50 and put into the hot air heating furnace 60. Then, the hot air circulating in the hot air heating furnace 60 is heated to a predetermined temperature, and the thermoplastic resin binder or the thermoplastic binder fiber in the molded nonwoven fabric of the sheet material S is partially melted and softened.
[0034]
Thereafter, while being held by the conveying device 50, it is supplied into the cold press forming mold 70, and is shaped into a required shape by clamping the upper and lower molds 71, 72 for cold press forming, and the luggage side trim 80 is formed.
[0035]
In the press molding in the cold press mold 70, the sheet material S is positioned and set at an appropriate location, so that there are few molding defects, and there are fewer edge materials generated during molding. There is.
[0036]
【The invention's effect】
As described above, according to the sheet material positioning method and positioning apparatus according to the present invention, the sheet material placed on the rectangular set table is moved forward and backward by the four-side positioning bar to position the sheet material. When performing, the pressing bar is lowered from above the set table to eliminate the curling and warping of the sheet material, and the positioning can be performed in a state where the sheet material is regulated in a flat shape, so that the positioning accuracy is improved. It has the effect of being able to.
[0037]
Furthermore, since positioning work with the positioning bar is possible without warping deformation or curl deformation, materials that were difficult to position with conventional positioning devices can be used, and the degree of freedom of materials can be greatly improved. Has the effect of being able to.
[0038]
In addition, if a free bearing is provided on the sheet material mounting surface of the set table, positioning work can be performed because even the non-slipable sheet material slides smoothly on the set table due to the action of the free bearing during positioning operation using the positioning bar. It has the effect that it can improve property.
[Brief description of the drawings]
FIG. 1 is a plan view showing an embodiment of a sheet material positioning apparatus according to the present invention.
FIG. 2 is a side view of the positioning device shown in FIG.
FIG. 3 is an explanatory view showing a setting operation of a sheet material from an original fabric cart in the positioning method according to the present invention.
FIG. 4 is an explanatory diagram showing a sheet material roughly set on a set table in the positioning method according to the present invention.
FIG. 5 is an explanatory view showing a sheet material positioning step in the positioning method according to the present invention.
FIGS. 6A and 6B are explanatory views showing (a) an application state of a sheet material to a warp deformation portion and (b) an application state of a sheet material to a curl deformation portion, respectively, in the sheet material positioning method according to the present invention.
FIG. 7 is an explanatory view showing a state in which the sheet material positioned by the sheet material positioning method according to the present invention is conveyed to a hot air heating process and a pressing process.
FIG. 8 is an explanatory view showing a conventional example of a sheet material positioning step.
FIG. 9 is a plan view showing a conventional positioning device.
FIG. 10 is an explanatory diagram showing a sheet material positioning step using a conventional positioning device.
FIGS. 11A and 11B are explanatory views showing a defect of a warp deforming portion in a conventional positioning device, and FIG. 11B an explanatory view showing a defect of a curl deforming portion.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Positioning device 12 Set table 13 Free bearing 20 Positioning bar 21 Advance / retreat cylinder 22 Support arm 30 Press bar 30a, 30b Press bar 30c, 30d along the longitudinal direction 31 Press bar along the short direction 31 Lifting cylinder 40 Conveying device 60 Hot air heating furnace 70 Mold for cold press 80 Luggage side trim S Sheet material

Claims (4)

A method for positioning a sheet material (S) supplied to a forming die (70) by a conveying device (50), wherein the sheet material (S) placed on a rectangular set table (12) is By moving the positioning bars (20) provided along the four sides around the set table (12) toward the set table (12), the sheet material (S) is formed along the vertical and horizontal directions of the set table (12). And two rows of pressing bars (30a, 30b) extending along the longitudinal direction of the set table (12) and two rows of pressing bars (30c, 30b, extending along the short direction of the set table (12) consists of integrated structure and 30d), is lowered by the elevating cylinder (31) to push bar (30) to substantially the entire surface and facing the set table (12), warping of the sheet material (S) The method of positioning a sheet material, characterized in that the positioning operation while regulating the curling.   The sheet material (S) placed on the set table (12) is slid by the free bearing (13) provided on the set table (12), and positioning operation is performed while curling the sheet material (S) is regulated. The sheet material positioning method according to claim 1, wherein the sheet material positioning method is performed. A sheet material (S) positioning device (10) for positioning a sheet material (S) supplied to a forming die (70) by a conveying device (50), wherein the sheet material (S) is placed in a rectangular shape Set table (12), a positioning bar (20) provided along the four sides of the set table (12), an advancing / retreating cylinder (21) for moving the positioning bar (20) back and forth, and a set table (12 2 rows of pressing bars (30a, 30b) extending along the longitudinal direction of the set table (12) and two rows of pressing bars extending along the lateral direction of the setting table (12) (30c, 30d), and an elevating cylinder for driving the elevating and lowering of the pressing bar (30) and the pressing bar (30) facing substantially the entire surface of the set table (12). Constructed from 1) and presses upon positioning operation along the vertical and horizontal direction, the sheet material by the push bar (30) and (S) from above the sheet material by the positioning bar (20) (S), to regulate the warpage, curling An apparatus for positioning a sheet material.   The seating surface of the sheet material (S) of the set table (12) is provided with a free bearing (13) for sliding the sheet material (S) during the positioning operation of the sheet material (S). The positioning device for sheet material according to claim 3, wherein

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