JP2006110799A - Folding-back device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply and accurately fold back the protruded part of a skin material. <P>SOLUTION: A support stand 11 for supporting a molded ceiling panel 31, which is constituted by superposing the skin material 33 on a base material 32, is provided and a folding-back member 17, which folds back the protruded part 33a from the base material 32 of the skin material 33 so as to involve the end surface of the base material 32, is provided. A particulate sheet 20 as a friction resistance part is provided to the leading end part of the folding-back member 17 and the protruded part 33a of the skin material 33 is folded back through the particulate sheet 20. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a plate-like workpiece obtained by polymerizing a skin material on a base material, such as a molded ceiling board of a vehicle such as an automobile, and the end surface of the base material includes a protruding portion of the skin material from the base material. The present invention relates to a folding device for folding back and processing an end face.

In a vehicle such as an automobile, when the longitudinal length of the vehicle is long, the ceiling plate mounted on the ceiling in the vehicle interior is configured by connecting a plurality of molded ceiling plates in the front and rear directions.
That is, as shown in FIG. 8, the molded ceiling board 31 is molded into a predetermined shape in a state in which the skin material 33 is polymerized on the base material 32. Then, as shown in FIGS. 9A and 9B, the base material 32 of the molded ceiling board 31 is cut and removed over a predetermined width along the edge of the base material 32, and the protrusion 33 a is formed at the end of the skin material 33. Form. Thereafter, as shown in FIG. 9C, the protruding portion 33 a of the skin material 33 is folded back so that the end surface of the base material 32 is contained, and is adhered and fixed to the base material 32 with an adhesive. When the front and rear molded ceiling boards 31 are connected, the front and rear molded ceiling boards 31 covered with the skin material 33 are assembled to the vehicle body with their rear ends or front ends attached to each other.

  However, conventionally, the end surface treatment of the molded ceiling board 31 has been performed manually by an operator. For this reason, especially when the projection 33a of the skin material 33 is folded, the folding operation cannot be performed simultaneously over the entire length of the projection 33a, and considerable skill is required to achieve a uniform finish in the length direction. Cost. In particular, it is difficult to fold the arcuate portion 31c between the top plate portion 31a and the side plate portion 31b of the molded ceiling plate 31 so that wrinkles or the like do not occur. It was necessary to make a streak with a knife in advance and perform the folding work. Therefore, the folding work is troublesome and takes time, and even in this case, it is difficult to finish the folded portion with high accuracy without causing wrinkles or the like, and the pressing work with the iron is forced to finish. was there.

In order to deal with such a problem, for example, an end face processing apparatus for a molded product with a skin as disclosed in Patent Document 1 has been proposed. In this conventional apparatus, in a state where the molded product with the skin is pressed and fixed between the upper and lower molds, the guide is approached and moved from the side in conjunction with the heating body, and the entrainment portion of the skin material is folded back by the guide. Thereafter, the wound-up portion in the folded state is welded to the side end surface or the back surface of the core material by the heating body.
JP 2004-130632 A

  In the apparatus of Patent Document 1 described above, the skin material can be simultaneously folded over its entire length, so that the work process can be simplified and the work time can be shortened. However, in this conventional apparatus, when the entrainment portion of the skin material is folded back by the guide, slippage is likely to occur between the guide and the entrainment portion, so that the entrainment portion does not wrinkle along the end surface of the core material. In some cases, post-processing is required, and quality problems and complexity in the manufacturing process cannot be solved.

  The present invention has been made paying attention to such problems existing in the prior art. An object of the present invention is to provide a folding device that can easily perform the above-described folding operation in a short time and can finish the folded portion with high accuracy without causing wrinkles or the like.

  In order to achieve the above object, the invention described in claim 1 includes a support base for supporting a work obtained by polymerizing a skin material on a base material, and a protruding portion of the skin material from the base material. In a folding device comprising a folding member for folding so that the end surface of the base material is contained, a friction resistance portion is provided at a tip portion of the folding member, and the protruding portion of the skin material is provided via the friction resistance portion. It is configured to be folded back.

  According to a second aspect of the present invention, in the first aspect of the invention, the frictional resistance portion is composed of a granular sheet provided on the folding member, and the granular sheet is formed of a number of grains on the sheet base. It is characterized by sticking the body.

  According to a third aspect of the present invention, in the first or second aspect of the invention, prior to the folding of the skin material by the folding member, the protruding portion of the skin material is approximately 90 along the end surface of the substrate. A preliminary folding member is provided for folding back each time, and the folding member is further characterized in that the protruding portion folded back by the preliminary folding member is further folded back to the base material side by approximately 90 degrees.

  The invention according to claim 4 is the invention according to claim 3, wherein the support base includes a top plate receiving portion for receiving the top plate portion of the workpiece, and a side plate receiving portion for receiving the side plate portion of the workpiece. An arc receiving portion for receiving an arc-shaped portion of the workpiece between the top plate receiving portion and the side plate receiving portion, and the folding member and the preliminary folding member are the top plate receiving portion and the side plate of the support base. It has a top plate folding part, a side plate folding part, and an arc folding part corresponding to the receiving part and the arc receiving part, respectively.

  According to a fifth aspect of the present invention, in the invention according to the fourth aspect, the granule sheet has a hanging portion that hangs down from the upper surface at the top plate folded portion and the side plate folded portion of the folded member, The folded portion is characterized in that an upper surface portion provided on the upper surface is provided.

(Function)
In the first aspect of the invention, the folding member is moved closer to the edge of the workpiece while the workpiece is supported on the support base. At this time, the frictional resistance portion provided at the tip portion of the folding member is joined to the protruding portion of the skin material, and the protruding portion of the skin material is simultaneously folded back through the frictional resistance portion without causing any slippage. Accordingly, the protruding portion of the skin material can be folded back easily and in a short time, and the folded portion can be finished with high accuracy with a predetermined dimension without causing wrinkles or the like.

  In the invention according to claim 2, when the protruding portion of the skin material is folded, an appropriate frictional resistance can be imparted to the protruding portion of the skin material by the granular sheet, and slippage occurs between them. Can be reliably suppressed.

  In the invention according to claim 3, after the protrusion of the skin material is preliminarily folded back approximately 90 degrees along the end surface of the base material by the preliminary folding member, the protruding portion in the preliminary folding state is formed by the folding member. Further, it is folded back approximately 90 degrees toward the substrate. Therefore, the protruding portion of the skin material can be more reliably folded back so that the end surface of the base material is included.

  In the invention according to claim 4, even when the work is formed in a curved shape from the top plate portion, the side plate portion, and the arc-shaped portion, for example, like a molded ceiling board of a vehicle, it corresponds to the arc-shaped portion. It is not necessary to previously form a slit or the like in the protruding portion of the skin material, and the protruding portion of the skin material can be easily and accurately folded by the preliminary folding member and the folding member.

  In the invention according to claim 5, in the top plate portion, the side plate portion, and the arc-shaped portion of the workpiece, it is possible to uniformly impart frictional resistance to the protruding portion of the skin material by the granular sheet, and the protruding portion Can be folded back with higher accuracy.

  As described above, according to the present invention, the protruding portion of the skin material can be folded back easily and in a short time, and the folded portion can be finished with a predetermined dimension with high accuracy without causing wrinkles or the like.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In this embodiment, a molded ceiling board in a vehicle is used as a workpiece, and the folding device for carrying out end surface processing of the workpiece is embodied. Therefore, about the shaping | molding ceiling board as a workpiece | work, and its related structure, the code | symbol same as the structure code | symbol shown in FIG.8 and FIG.9 is referred, and those detailed description is abbreviate | omitted.

  As shown in FIGS. 1 and 2, the folding device is equipped with a support base 11 for supporting a molded ceiling plate 31 as a work formed by superposing a skin material 33 on a base material 32. The support 11 includes a top plate receiving portion 11a for receiving the top plate portion 31a of the formed ceiling plate 31, a side plate receiving portion 11b for receiving the side plate portion 31b of the formed ceiling plate 31, and the top plate receiving portion 11a. And the side plate receiving portion 11b are provided with an arc receiving portion 11c for receiving the arc-shaped portion 31c of the molded ceiling plate 31. A protruding portion 33 a of the skin material 33 is formed at one end portion in the longitudinal direction of the molded ceiling board 31 by cutting and removing the base material 32 over the predetermined width in advance along the edge.

  A plurality of positioning projections 12 project from the upper surface of the end of the top plate receiving portion 11 a of the support base 11, and a plurality of positioning holes 34 formed at the end of the molded ceiling plate 31 are engaged with these positioning projections 12. By combining, the formed ceiling board 31 is positioned at a predetermined position on the support base 11. A presser member 13 is disposed above one end of the support base 11 so that the presser member 13 can be raised and lowered. Pressed and held.

  As shown in FIGS. 1, 3, and 4, a lifting plate 14 is disposed on the side of the support base 11 so as to be movable up and down corresponding to the protrusion 33 a of the skin material 33. It is moved up and down between a lower standby position and an upper operation position. A flat plate-like preliminary folding member 16 is erected and fixed on the elevating plate 14. On the upper surface of the elevating plate 14, a folding member 17 having an upper portion formed in an approximately L-shape is supported so as to be movable toward and away from the support base 11. To the retracted position and the inner folding position close to the support base 11.

  The preliminary folding member 16 and the folding member 17 correspond to the top plate receiving part 11a, the side plate receiving part 11b and the arc receiving part 11c of the support base 11, respectively, and the top plate folding parts 16a and 17a, the side plate folding parts 16b, 17b and arc-turned portions 16c and 17c are formed. A folded end face 19 having a predetermined inclination angle (for example, in the range of 30 to 60 degrees, preferably 45 degrees) is formed at the ends of the folded parts 17a, 17b, and 17c of the folded member 17.

  As shown in FIGS. 1, 3, and 4, a granular sheet 20 as a frictional resistance portion is disposed on each folded portion 17 a, 17 b, 17 c of the folded member 17. The granular sheet 20 is made of, for example, sandpaper, which is formed by pasting a large number of granular bodies 22 on a sheet base 21. The granular sheet 20 includes a top surface portion 20a joined to the top surface of the folded member 17 corresponding to the top plate folding portion 17a and the side plate folding portion 17b, and a hanging portion depending from the top surface portion 20a. 20b, and the portion corresponding to the arc-turned portion 17c has only the upper surface portion 20a joined to the upper surface.

  And when the raising / lowering plate 14 is moved up from the lower standby position to the upper working position with the molded ceiling plate 31 supported on the support base 11, as shown in FIGS. From the folded portions 16 a, 16 b, and 16 c of the folded member 16, the protruding portion 33 a of the skin material 33 is preliminarily folded upward at approximately 90 degrees along the end surface of the base material 32. Thereafter, when the folding member 17 is moved from the outer retracted position to the inner folding position, as shown in FIG. 7, the folding members 17a, 17b, and 17c of the folding member 17 pass through the granule sheet 20 as a spare. The protruding portion 33a in the folded state is further folded back to the base material 32 side at approximately 90 degrees.

Next, the operation of the folding device configured as described above will be described.
Now, in the state shown in FIG. 4, the elevating plate 14 is disposed at the lower standby position, and the folding member 17 is disposed at the outer retracted position. In this state, the molded ceiling board 31 as a work is supported on the support base 11 and positioned at a predetermined position by the engagement between the positioning hole 34 and the positioning projection 12. Further, an adhesive is applied to the surface of the protruding portion 33 a of the skin material 33 or the upper surface of the base material 32. Thereafter, when the folding device is activated, the elevating cylinder 15 is protruded, and the elevating plate 14 is moved upward from the lower standby position to the upper operating position. Then, as shown in FIGS. 5 and 6, the protruding portion 33 a of the skin material 33 is lifted from the folded portions 16 a, 16 b, and 16 c of the preliminary folding member 16, and is approximately 90 degrees along the end surface of the base material 32. Is preliminarily folded.

  In this case, in a portion corresponding to the top plate portion 31a and the side plate portion 31b of the molded ceiling plate 31, the protruding portion 33a of the skin material 33 extends linearly on the top plate receiving portion 11a and the side plate receiving portion 11b of the support base 11. Since they are arranged, the protruding portion 33a is smoothly folded back and joined to the hanging portion 20b of the granular sheet 20 on the back surface thereof.

  On the other hand, in the portion corresponding to the arc-shaped portion 31 c of the molded ceiling board 31, the projecting portion 33 a forming the arc shape of the skin material 33 is arranged in an arc shape on the arc receiving portion 11 c of the support base 11. A force against folding is applied to the protruding portion 33a of the portion. That is, when the arcuate protrusion 33a is folded back, a force in the direction in which the portion expands (extends) acts on the tip side, and thus a force against it acts. Therefore, as shown in FIG. 6, the arcuate portion of the projecting portion 33 a is not easily folded back and is joined to the upper surface portion 20 a of the granular sheet 20 at the back surface of the tip end of the projecting portion 33 a.

  Thereafter, the moving cylinder 18 is protruded, and the folding member 17 is moved from the retracted position to the folding position. Then, as shown in FIG. 7, the protruding portion 33a in the pre-folded state is further folded back to the base material 32 side by approximately 90 degrees through the granular sheet 20 by the folded portions 17a, 17b, and 17c of the folding member 17. . At this time, in a portion corresponding to the top plate portion 31a and the side plate portion 31b of the formed ceiling plate 31, the protruding portion 33a of the skin material 33 is joined to the drooping portion 20b mainly of the granular sheet 20, and an appropriate resistance is given. Wrapped while.

  Further, at the portion corresponding to the arc-shaped portion 31 c of the molded ceiling plate 31, the protruding portion 33 a is folded back while being joined only to the upper surface portion 20 a of the granular sheet 20. That is, as described above, in the arc-shaped portion of the protruding portion 33a, a force against folding is applied, so even if the hanging portion 20b of the granular sheet 20 is not present, the protruding portion 33a and the granular sheet The upper surface portion 20a of the 20 contacts with an appropriate contact pressure.

  Therefore, moderate frictional resistance can be uniformly imparted to the protruding portion 33a of the skin material 33 by the granular sheet 20, and the protruding portion 33a is covered over the entire length so that the end surface of the base material 32 is included. It can be folded at the same time without slipping.

  In this case, as shown in FIG. 7, by the movement of the folding member 17, the preliminary folding member 16 is pressed against the folded portion of the protruding portion 33 a of the skin material 33 on the end surface side of the base material 32. In addition, the folding member 17 is moved from the position indicated by the chain line in FIG. 7 to the position indicated by the solid line by the slight downward movement of the elevating plate 14 in this state, and the folded portions 17 a to 17 c of the folding member 17 are This state is pressed against the folded portion of the protrusion 33a of the skin material 33 on the upper surface side, and this state is maintained for a certain time. Therefore, the folded portion of the projecting portion 33a is bonded to the upper surface of the base material 32 without causing wrinkles or the like, and the terminal treatment of the base material 32 can be formed with a predetermined dimension with high accuracy.

As described above, this embodiment exhibits the following effects.
-When the protruding portion 33a of the skin material 33 is turned back, an appropriate frictional resistance can be imparted to the protruding portion 33a of the skin material 33 by the granular sheet 20. For this reason, it can suppress that a slip arises between the skin material 33 and the folding | returning member 17, and the protrusion part 33a of the skin material 33 can be correctly folded without a wrinkle etc. in a short time.

The above-described folding effect can be obtained with a configuration in which only the granular sheet 20 is provided, and the configuration is very simple.
Prior to the folding of the folding member 17, the preliminary folding member 16 preliminarily folds the protruding portion 33 a of the skin material 33 along the end surface of the base material 32. Therefore, the protrusion 33a of the skin material 33 can be reliably folded back at a predetermined position.

(Example of change)
In addition, this embodiment can also be changed and embodied as follows.
As shown in FIG. 10, the lifting plate 14 and the folding member 17 are separately formed, and they are configured to be operated independently by the lifting cylinder 15 and the moving cylinder 18. If comprised in this way, after the preliminary | backup folding member 16 will raise and the protrusion part 33a of the skin material 33 will be bend | folded upwards, it will be possible to raise the folding member 17 and to horizontally move in the folding direction like FIG. it can. Therefore, the movement timing of the preliminary folding member 16 and the folding member 17 can be set to an appropriate one independently.

  -In the part corresponding to the top-plate folding | turning part 17a of the folding | turning member 17, the upper surface part 20a of the granule sheet | seat 20 is abbreviate | omitted, and only the hanging part 20b is provided. When the skin member 33 is folded back at the portion corresponding to the top plate folding portion 17a of the folding member 17, the drooping portion 20b mainly comes into contact with the protruding portion 33a, so that the same action as in the above embodiment can be obtained. it can.

A frictional resistance portion is integrally formed on the folded portions 17 a to 17 c of the folded member 17.
-A configuration other than the above-described embodiment is adopted as the friction resistance portion. For example, use a material with a high coefficient of sliding friction such as rubber, or use a rough surface structure such as a knurled structure.

-Without providing the preliminary | backup folding | returning member 16, only the folding | turning member 17 is raised and moved laterally, and it comprises so that the protrusion part 33a of the skin material 33 may be folded.
The embodiment of the folding device according to the embodiment is embodied when the skin material of the workpiece different from the molded ceiling board 31 is folded back to the base material side.

The perspective view which shows the folding | turning apparatus of one Embodiment. The partial perspective view which shows a support stand. The inner side view of the folding | turning member of the folding apparatus of FIG. FIG. 4 is a partially enlarged cross-sectional view of the folding device taken along line 3-3 in FIG. 3. FIG. 4 is a partial cross-sectional view showing an operating state of the folding device of FIG. 3. FIG. 5 is a partial cross-sectional view showing an operation state corresponding to FIG. FIG. 7 is a partial cross-sectional view showing a state in which the state further operates from the state of FIG. 6. The perspective view which shows the shaping | molding ceiling board of a vehicle. (A) is the elements on larger scale in 8-8 line of FIG. (B) is a fragmentary sectional view which shows the state which cut and removed a part of base material from the state of (a). (C) is a fragmentary sectional view which shows the state which turned up the protrusion part of the skin material from the state of (b). Sectional drawing which shows another embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Support stand, 11a ... Top plate receiving part, 11b ... Side plate receiving part, 11c ... Arc receiving part, 14 ... Lifting plate, 15 ... Lifting cylinder, 16 ... Preliminary folding member, 16a ... Top plate folding part, 16b ... Side plate folding portion, 16c ... arc folding portion, 17 ... folding member, 17a ... top plate folding portion, 17b ... side plate folding portion, 17c ... arc folding portion, 18 ... moving cylinder, 20 ... granular sheet as friction resistance portion , 20a ... upper surface part, 20b ... hanging part, 21 ... sheet base, 22 ... granule, 31 ... molded ceiling board as work, 31a ... top plate part, 31b ... side plate part, 31c ... arc-shaped part, 32 ... base Material, 33 ... skin material, 33a ... protrusion.

Claims (5)

A support base for supporting a workpiece obtained by polymerizing a skin material on a base material, and a folding member for folding back the protruding portion of the skin material from the base material so that the end surface of the base material is included. In the folding device,
A folding device characterized in that a friction resistance portion is provided at a tip portion of the folding member, and the protruding portion of the skin material is folded via the friction resistance portion. The said friction resistance part consists of a granular sheet provided on the folding | turning member, The granular sheet is comprised by sticking many granular bodies on a sheet | seat base | substrate. The folding apparatus as described in. Prior to the folding of the skin material by the folding member, a preliminary folding member for folding the protrusion of the skin material at approximately 90 degrees along the end surface of the base material is provided, and the folding member is folded by the preliminary folding member The folding device according to claim 1 or 2, wherein the protruding portion is further folded back to the base material side at approximately 90 degrees. The support base includes a top plate receiving portion for receiving the top plate portion of the workpiece, a side plate receiving portion for receiving the side plate portion of the workpiece, and an arc shape of the workpiece between the top plate receiving portion and the side plate receiving portion. The folding member and the preliminary folding member are respectively a top plate folding unit and a side plate folding unit corresponding to the top plate receiving unit, the side plate receiving unit and the arc receiving unit of the support base, respectively. The folding device according to claim 3, further comprising an arc folding portion. The granular sheet has a drooping portion that hangs down from the upper surface of the top plate folding portion and the side plate folding portion of the folding member, and an upper surface portion provided on the upper surface of the arc folding portion. The folding device according to claim 4.

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