JPH046578Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a covering device for covering and adhering a covering material such as decorative cloth to the outside of a case constituting a jewelry box or the like.

[Conventional technology]

Small cases such as jewelry boxes are made from metal plates such as iron plates that are press-molded into the desired shape.
The surface is covered with a covering material such as cloth and then adhered.

[Problem that the invention attempts to solve]

Although the above-mentioned device for applying a coating material to the surface of a case is known, this known device has a complicated structure using cams and the like, and has problems such as not operating smoothly.

[Means for solving problems]

In order to solve the above problems, this invention removably holds an upwardly facing case below a lower mold that has a recess into which the upwardly facing case fits, lowers the case, and inserts the case into the recess of the lower mold. There is an upper mold that can be raised and lowered by fitting into the mold, and an air cylinder that raises and lowers this upper mold. It is provided with a plurality of folding blades for folding the circumferential edge of the covering material protruding upward into the inside, an air cylinder for advancing and retracting each of the folding blades, and further provided with a protruding means for projecting the lower mold upward and an air cylinder for driving the same. It is.

[Effect]

This idea has the above structure, so a covering material such as cloth is placed on the lower mold, and adhesive is applied to the inside and outside of the periphery of the upper mold to hold the case facing upward. When the cylinder is activated to lower the upper mold, the case that has descended together with the upper mold pushes the coating material into the recess of the lower mold and fits into the recess.

Then, when the upper mold is raised, the case remains in the lower mold together with the covering material, and only the upper mold is raised.

In this way, on the periphery of the case remaining in the lower mold, the periphery of the covering material covering the outside of the case protrudes upward, so by working the air cylinder around the lower mold, each folding blade is removed from the lower mold. By advancing upward, the periphery of the covering material is folded into the case and adhered.

Thereafter, the upper die is lowered again to fold the peripheral edge of the covering material into the case, each folding blade is retracted, the upper die is raised, and then the protruding means protrudes the lower die within the lower die body.

〔Example〕

In FIGS. 1 to 3, 1 is a machine frame, 2 is a table thereon, and a lower die main body 3 is fixed onto this table 2 via appropriate clamping means.

Reference numeral 4 denotes a plurality of supports provided on the table 2, a support plate 5 is fixed to the upper end thereof, an air cylinder 6 is fixed to the center of this support plate 5, and an elevating frame is attached to the lower end of the elevating rod 7 of the air cylinder 6. 8 is fixed, and the guide rods 9 on both upper sides of the frame 8 are inserted into the guide holes of the support plate 5.

Reference numeral 11 indicates four support rods fixed near the four corners of the table 2, and a support plate 12 is fixed to the upper end of the support rods. The position can be adjusted by tightening the nut screwed into this bolt.

Further, the rear end of the air cylinder 14 is attached to a horizontal pin 1 on the bearing 13 fixed to the tip of each support plate 12.
5, and a folding blade 18 is fixed via a bracket 17 to the tip of a reciprocating rod 16 projecting from the cylinder 14 as shown in FIG.

The planar shape of the tip of this folding blade 18 is shown in FIG.
It is formed as a V-shaped recess 19 as shown in FIG. 4, and the side surface of the tip of the blade 18 is inclined as shown in FIG.

The folding blades 18 described above are arranged diagonally on the lower mold body 3 as shown in FIGS. 3 and 4. As shown in FIG. 8, a rectangular opening 21 with rounded corners is provided in the center of the lower die main body 3, and when each folding blade 18 moves forward, each recess 19 opens into a fourth opening 21.
As shown in the figure, the rounded corner smaller than the opening 21 is the opening 2.
It is designed to be formed concentrically with 1.

Reference numeral 25 in FIG. 1 is a mounting plate fixed to the elevating frame 8 by appropriate clamping means, and an upper mold 26 for holding the case, which includes an electric heater 23, is fixed to the lower part of the mounting plate 25. Further, a push frame 28 is attached to the lower surface of the mounting plate 25 by a plurality of push springs 27. This press frame 28 has a size such that the upper die 26 can be freely fitted therein. Further, a permanent magnet 22 for attracting the case is attached to the upper mold 26 as shown in FIG.

29 in FIG. 1 is an air cylinder, and the protruding means 30
It raises and lowers the This protruding means 30 is
As shown in Figure 5, the frame 3 at the bottom of the table 2
It consists of a protruding plate 32 that is raised and lowered by an air cylinder 29 fixed to the table 1, and legs 34 fixed to the lower part of the lower mold 33 and passing through the table 2.

FIG. 11 shows an example of a method for manufacturing the lower mold 33, where 35 is a mold, 36 is a case fitted downward into the lower opening of the mold 35, and this case 36 is placed facing downward on a surface plate 37. The periphery of the formwork 35 is brought into close contact with the outer periphery of the case 36, and the surface plate 3 is
While keeping the upper surface of the formwork 35 horizontal with a dial gauge 39 attached to a stand 38 placed on the formwork 7, epoxy resin or the like is injected from the spout 40 at the center of the upper part of the formwork 35 and cured. and the recess 41 formed by the case 36 by removing the case 36.
Obtain a lower mold 33 having the following.

The leg 34 and the stopper 4 are attached to this lower mold 33.
2, and is installed in the lower mold body 3 so as to be able to move up and down as shown in FIG.

In FIG. 1, 60 is a photoelectric device such as a phototube or phototransistor, and 61 is a floodlight. Both are mounted on a flexible arm 62 attached to the support 4 as shown in FIG. 6
When the light beam 63 is intercepted by an operator's hand or the like, a signal is sent to the control unit to stop the operation.

The above-mentioned flexible arm 62 is movable up and down with respect to the column 4 and is also rotatable so that the light beam 63 can pass through to any desired position.

1 and 2, 44 is an operation panel, 45 is a dial for operating the upper air cylinder 6, 46 is a forward button for the folding blade 18, 47 is a backward button, 48 is an emergency stop button, 49 is the protruding plate 32
50 is a pair of left and right operation buttons, 5
1 is a power switch, 52 is a heater switch, 53
is an automatic, single-acting changeover switch.

In addition, 54 in FIG. 1 is an air supply pipe leading to a compressed air source, 55 is a stop valve, and 56 is a group of control valves.

Next, to explain the operation, as shown in FIG.
Set 8. On the other hand, an upwardly facing case 36 is placed over the lower part of the upper mold 26 and is attracted by the permanent magnet 22. At this time, there is a gap of about 0.5 mm between the outer periphery of the upper mold 26 and the inner periphery of the case 36. Further, an adhesive 43 is applied inside and outside the periphery of the case 36, dried, and melted when heated.

In this way, the lower mold 33, the covering material 58, and the case 36
, open the stop valve 55, turn on the power switch 51 and heater switch 52, and then switch the changeover switch 53 to automatic. Then,
When the left and right operation buttons 50 are pressed, the air cylinder 6
is activated, the lifting rod 7 is lowered together with the mounting plate 25 and the upper mold 26, and the lower pressing frame 28 is pressed against the periphery of the covering material 58 via the spring 27, and then the case 36 is lowered as shown in FIG. It is pushed together with the covering material 58 into the recess 34 of the mold 33 .

In this state, the lifting rod 7 and the like are stopped for a time set in advance by a timer or the like.

Since the adhesive is applied to the inside and outside of the periphery of the case 36 in advance as described above, the adhesive is melted by heat and the periphery of the covering material 58 covering the surface of the case 36 is adhered to the periphery of the case 36.

After a certain period of time, the air cylinder 6 operates and the upper mold 26 rises, but at this time, the case 36 is relatively firmly fitted into the recess 34 of the lower mold 33 via the covering material 58, so only the case 36 is lowered. remains in the mold 33,
The periphery of the covering material 58 rises as shown in FIG.

Next, each air cylinder 14 is activated, and the folding blades 18, which were in the retracted position as shown in FIGS. 3 and 5 to 7, move forward to move the periphery of the covering material 58 inward as shown in FIG. Fold. In this state, when the supply of compressed air to each air cylinder 14 is cut off and each folding blade 18 is freed, the cylinder 6 is operated again to lower the upper mold 26, and as shown in FIG. 28 presses each blade 18 to prevent rattling, while the upper mold 26 pushes each blade 18 open and fits into the case 36. At this time, the upper mold 26 folds the periphery of the covering material 58 into the inside of the case 36. , is adhered with the adhesive already applied to the case 36.

The covering material 58 that wraps the outside of the case 36 in this way
After the periphery is bent inward and glued,
The cylinders 6 and 14 operate, and the upper die 26 and the press frame 28
is raised and the reciprocating member 18 is retracted as shown in FIG.
2 rises, pushes up the legs 34 of the lower mold 33, and pushes the lower mold 33 together with the covered case 36 onto the lower mold main body 3.

FIG. 12 shows an example of a product taken out from the lower mold 33 that has protruded onto the lower mold main body 3 in this manner.

The automatic operation described above is performed by sequence control using a timer or the like, but when the switch 53 is switched to single action, when the operating dial 45 is turned to the right, the lifting rod 7 etc. are raised by the action of the air cylinder 6.
Turning it to the left lowers it, which is convenient when adjusting the mounting position of the lower mold 33 and upper mold 26.
By pressing buttons 6 and 47, the air cylinder 14 is actuated to move the folding blade 18 forward or backward, which is convenient for adjusting the installation of the blade 18. By pressing button 49, the cylinder 31 is activated and the raised plate 32 is moved freely. Go up and down.

It is safe to start automatic operation by pressing the left and right operation buttons 50 at the same time, and if the emergency stop button 48 is pressed during operation, all parts will stop immediately.

The protrusion means 30 and the folding blades 18 constitute a part of the lower mold body 3, and the upper mold 26 and the lower mold 33 form one set of molds. Therefore, each case differs depending on the size and shape of the case, and is replaced every time the size and shape of the case changes, and the folding blade 18 is also replaced.

〔effect〕

This invention fully automatically covers the outside of the case, which has been formed by press-forming a metal plate, as described above, with a covering material such as cloth. Since the upper die is moved up and down using an air cylinder, these movements can be controlled by an electric circuit that includes a timer, limit switch, photoelectric detector, etc. Compared to the above, the structure is simpler, the operation is smoother, and there are almost no failures.

[Brief explanation of drawings]

Fig. 1 is a front view of the device of this invention, Fig. 2 is a side view of the same, Figs. 3 and 4 are cross-sectional plan views showing each state of the above, and Figs. 5 to 10 are main parts. FIG. 11 is an enlarged longitudinal sectional side view of each process showing the operation; FIG.
The figure is a partially cutaway perspective view of the product. 3...Lower die main body, 6, 14, 29...Air cylinder, 18...Folding blade, 26...Upper die, 30...
... Projection means, 33 ... Lower mold, 36 ... Case, 5
8...Covering material.

Claims (1)

[Scope of utility model registration request] A liftable upper mold that removably holds an upwardly facing case above a lower mold having a recess into which the upwardly facing case fits, and lowers the upper mold by fitting the case into the recess of the lower mold; An air cylinder is provided to raise and lower the mold, and a plurality of cylinders are provided around the lower mold to fold inward the periphery of the covering material that is sandwiched between the lowered case and the recess of the lower mold and protrudes over the outer periphery of the case. A case covering device comprising folding blades, an air cylinder for moving the folding blades forward and backward, and further comprising a protruding means for projecting a lower die upward and an air cylinder for driving the protruding means.