JP2549371B2 - Sheet attachment device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a sheet sticking device, and for example, a sheet is said to be stretched when a cover cloth is stuck to a front plate of a speaker. Used when

(Prior Art) The work of sticking a sheet of this kind is troublesome in that the sheet is applied to a predetermined plate to be stretched and stretched while the sheet is fixed at a predetermined position while the stretch is maintained. Since the work is complex and continuous, it is difficult to mechanize it well and relies on manual work.

(Problems to be Solved by the Invention) However, manual work requires skill and poor work efficiency, which causes not only high cost but also variation in sticking state.

(Means for Solving Problems) In order to solve the above problems, the present invention has a holding means for sandwiching and holding a sheet and a plate to be adhered, and a peripheral portion of the sheet protruding from the plate to be adhered. A sandwiching frame that holds the sheet by sandwiching it from the front and back and bending the peripheral edge portion of the sheet to the back surface side of the plate to be stretched by relative movement with the retaining means in the sandwiching direction, and the peripheral edge portion of the sheet that is bendable A pusher that bends and folds back from around the adhered plate along its back surface and a fastening means that fixes the required position of the peripheral portion of the folded sheet to the back surface of the adhered plate. Is characterized by.

(Operation) According to the above configuration, the holding means that sandwiches the sheet and the plate to be stretched, and the sandwiching frame that sandwiches the peripheral edge of the sheet that protrudes from the plate to be stretched are relatively moved in the sandwiching direction. By moving the holding position of the peripheral edge of the sheet to the back side of the plate to be adhered, the peripheral edge of the sheet can be bent to the back side of the plate to be adhered. At this time, the central portion of the sheet whose peripheral portion is clamped by the clamping frame is pushed by the plate to be stretched, and the peripheral portion is pulled outward by an appropriate clamping friction by the clamping frame. Since it can be bent, the sheet can be provided with an appropriate expanded state and can be placed along at least the surface portion and the side peripheral portion of the plate to be tensioned.

By advancing the pusher from around the adhered plate to the adhered plate side, the peripheral edge portion of the sheet which is in a stretched state by being bent to the back surface side of the adhered plate of the sheet is attached to the adhered plate. It can be bent along the peripheral portion of the back surface of the plate and folded back, and the peripheral portion can be fixed to the peripheral portion of the rear surface of the plate to be tensioned and can be held in that state. At this time, the peripheral portion is folded back while being pulled inside the back surface of the plate to be stretched due to friction with the pushing body advancing, so that the sheet is provided with a more appropriate expansion state and the surface portion of the plate to be stretched and It is possible to extend along the entire range of the side peripheral portion and the peripheral portion of the back surface.

By fixing the required position of the peripheral portion folded back by the sheet fastening means to the peripheral portion of the back surface of the plate to be attached, the sheet can be attached to the plate to be attached in the stretched state.

(Embodiment) An embodiment of the present invention shown in FIGS. 1 to 5 is a device for attaching a cover cloth (sheet) a made of synthetic fiber to a synthetic resin front plate (adhered plate) b of a speaker. It has been applied to.

As shown in FIGS. 1 to 3, the apparatus of this embodiment is provided with a pair of upper and lower holding plates 1 and 2 for vertically holding a cover cloth a and a front plate b by sandwiching them from above and below, and , The peripheral edge portion of the cover cloth a protruding from the front plate b is sandwiched and held from the front and back (upper and lower sides in the figure), and the cover cloth a is moved by relative movement in the vertical direction with the holding plates 1 and 2.
Is provided with a pair of upper and lower holding frames 3 and 4 for bending the peripheral edge portion of the front plate b to the back surface side (upper surface side in the figure).

Further, the apparatus includes a pushing plate (pushing body) 5 which bends and folds the peripheral portion of the cover cloth a to be bent from around the front plate b along the back surface portion thereof, and the cover cloth a to be folded is A frame-shaped heat-welded body 6 (FIG. 3) that fastens the required position of the peripheral portion to the peripheral portion of the back surface of the front plate b is vertically movable.

The upper holding plate 1 is vertically moved by a pair of left and right air cylinders 7, 7 arranged above as shown in FIG. The lower holding plate 2 is vertically moved by a pair of left and right air cylinders 9, 9 arranged in a lower box 8. The pair of upper and lower holding plates 1 and 2 and the air cylinders 7 and 9 constitute a holding means.

Of the holding frames 3 and 4, the upper holding frame 3 is vertically moved by a pair of left and right air cylinders 10 and 10 arranged in a box 8. The lower holding frame 4 is fixed to the center of the upper surface of the box 8.

When the rubber material 3a is attached to the lower end portion of the holding frame 3 and the peripheral edge portion of the cover cloth a is held between the lower holding frame 4 and the lower holding frame 4, the frictional force with the cover cloth a is increased and the holding cloth is held uniformly over the entire circumference. I am trying to get the status. Further, six pushers 11 are provided on the inner peripheral wall of the upper holding frame 3 so as to be able to advance and retreat inward.

The pusher plate 5 is movable along the lower surface of the lower holding frame 4 between the non-folded position shown by the phantom line in FIGS. 2 and 3 and the folded position shown by the solid line so as to move forward and backward (four bodies). (See FIG. 5). The upper end of the pushing plate 5 is provided with an upper hook 5a that bends in the advancing direction (rightward in the drawing).

As shown in FIG. 5, these four push plates 5 are composed of a pair of narrow push plates 5 and 5 facing each other and a wide pair of push plates 5 and 5, Notches 5a are provided on both sides of each of the narrow push plates 5 to engage with the adjacent wide push plates 5 to stop the push plates 5 at the folded position.

The pusher plate 5 has two guide bars fixed to its back surface.
The guides 12 and 12 are guided in the advancing / retreating direction via guide blocks 13 and 13 fixed to the inner surface of the box 8. Further, a connecting rod 14 is vertically provided on the back surface of the pushing plate 5, and an interlocking rod 15 connected at the lower end of the connecting rod 14 is provided so as to be movable in the advancing and retracting direction of the pushing plate 5. On the other hand, a support pillar 16 is erected in the center of the box 8, two swing arms 17 are pivotally supported on two adjacent side surfaces of the support pillar 16, and an air cylinder 18 is attached to the lower end of each swing arm 17. Connected to. Above and below the pivot point of the swing arm 17, the interlocking rods 15 of the push plates 5 facing each other are pivotally attached at their inner ends. The outer end of the interlocking rod 15 is inserted through and supported by the guide hole 20 of the guide plate 19. As a result, the advancing movements of the pushing plates 5 and 5 facing each other can be equalized, so that the held position of the front plate b is prevented from shifting to the front, rear, left and right due to the advancing movement of the pushing plate 5. be able to.

A frame 21 is erected on the box 8 as shown in FIG. 4, and a fixing plate 22 is attached to the upper portion of the frame 21. The air cylinder 7 of the upper holding plate 1 is fixed to the fixing plate 22 at its upper end. A movable plate 23 is provided below the fixed plate 22 so as to be vertically movable. The heat-welded body 6 is connected to the movable plate 23 by four connecting rods 24. The movable plate 23 is
It is vertically guided by a pair of left and right guide bars 25, 25 via guide blocks 26, 26, and is vertically moved by a pair of front and rear air cylinders 27, 27 standing on the upper surface of the fixed plate 22.

The heat-welded body 6 can pass through the lower holding frame 4, the upper holding plate 3 can pass through the frame, and is formed in a frame shape larger than the plane shape of the front plate b. . Inside the heat-welded body 6, a heater 6 a for heating the heat-welded body 6 is embedded. The heat-welded body 6, the movable plate 23, the connecting rod 24, and the air cylinder 27 for moving the movable plate 23 up and down constitute a fastening means.

The operation of the cover cloth a sticking device configured as described above will be described.

With the upper holding plate 1, the upper holding frame 3 and the heat welded body 6 moved upward, the lower holding plate 2 is stopped at a position where its upper surface is substantially flush with the upper surface of the lower holding frame 4 (see FIG. 1). Then, the cover cloth a is placed on the upper surfaces of the lower holding plate 2 and the lower holding frame 4. The upper holding frame 3 is lowered, and the peripheral portion of the cover cloth a is pressed against the lower holding frame 4.

The front plate b is housed in the frame of the upper holding frame 3 and placed on the cover cloth a. The pushers 11 of the upper holding frame 3 are advanced inward to position the front plate b. Next, the upper holding plate 1 is lowered, and the cover cloth a and the front plate b are sandwiched between the lower holding plate 2 and the lower holding plate 2 as shown in FIG. In this sandwiched state, the upper holding plate 3 and the lower holding plate 4 are lowered. This lowering is performed while decreasing the internal pressure of the air cylinder 9 of the lower holding plate 2 and increasing the internal pressure of the air cylinder 7 of the upper holding plate 3 so as to maintain the balance between the two.

As a result, the sandwiched portion of the cover cloth a and the front plate b pass through the lower sandwiching frame 4 downward, but the peripheral portion of the cover cloth a is in the sandwiched state, so that the peripheral portion is As shown by the chain double-dashed line in the figure, it can be bent to the back surface side (top surface side in the figure) of the front plate b.

At this time, the central portion of the cover cloth a whose peripheral portions are clamped by the clamping frames 3 and 4 is pushed by the front plate b, and the peripheral portions are appropriately clamped by the clamping frames 3 and 4. Since the cover cloth a is bent while being pulled outward, the cover cloth a can be provided with an appropriate stretched state so that the cover cloth a can extend along at least the surface portion and the side peripheral portion of the front plate b.

When the pushing plate 5 is advanced in the arrow direction as shown in FIG. 2, the upper end hook portion 5a of the pushing plate 5 moves inward along the back surface of the front plate b. The push plates 5 stop at the folding position where the push plates 5 are fitted together at their both ends.

As a result, the peripheral portion of the front plate b that is bent to the back surface side (two-dot chain line) is bent along the back surface of the front plate b and folded back (one-dot chain line), and the peripheral portion is surrounded by the rear surface of the front plate b. It can be attached to the part and can be held in that state. Further, since the peripheral edge portion is folded back while being pulled inward by friction with the upper end hook portion 5a, the cover cloth a is provided with a more appropriate expansion state so that it covers the entire area of the surface portion and the side peripheral portion of the front plate b. It is possible to run along the periphery of the back surface.

The heat-welded body 6 is lowered, and its lower end is pressed against the peripheral portion of the cover cloth a as shown in FIG. The peripheral portion of the cover cloth a and the required position on the back surface of the front plate b are heat-welded to fix the cover cloth a to the front plate b.

In the present embodiment, the cover cloth a is made of synthetic fiber having a higher melting point than the front plate b, and the heating temperature of the heat-welding member 6 is adjusted to the melting point of the front plate b. It is performed by impregnating the peripheral portion of the back surface of b into the cover cloth a and cooling and solidifying. When the sheet attached to the front plate b has liquid permeability, the fastening means may be configured to fix the sheet to the front plate b using an adhesive.

After that, the pushing plate 5 is retracted and the upper and lower holding plates 1,
2 is moved up to the position shown in FIG.
Only the front plate b of the speaker to which the cover cloth a is attached can be taken out by raising only the cover.

The present invention can be configured in various modes other than those shown in the above embodiments. The holding means and the fastening means are not limited to those shown in the above embodiment. Further, the shape of the holding frame and the pusher can be variously designed depending on the shape of the sheet or the plate to be stretched.

(Advantages of the Invention) Since the present invention has the above-described configuration and operation, it is possible to automatically and efficiently perform the sheet sticking work that has conventionally relied on manual work, and the work is even because the mechanical processing is performed. As a result, there is no variation in the stuck state of the sheet.

[Brief description of drawings]

1 to 3 are sectional views showing an essential part of an embodiment of the present invention and its operation, FIG. 4 is a perspective view showing the entire mechanism, and FIG.
The figure is a perspective view showing the main part thereof. 1, 2, 7, 9 ... Holding means 3, 4 ... Holding frame 5 ... Pushing body 6, 23, 24, 27 ... Fastening means a ... Sheet b ... Cover plate

Claims (1)

(57) [Claims] 1. A holding means for sandwiching and holding a sheet and an adhered plate, and a peripheral edge portion of a sheet protruding from the adhered plate, sandwiched and held from the front and back thereof, and the sandwiching direction with the retaining means. A holding frame that folds the peripheral edge of the sheet to the rear surface side of the plate to be adhered by relative movement in the above, and the peripheral edge portion of the sheet that is bent is bent around the adhesive plate along the rear surface thereof and folded back. A sheet sticking device, comprising: a pusher and a fastening means for fastening a required position of the peripheral portion of the folded sheet to the back surface of the plate to be stretched.