JP3447987B2 - Die opening / closing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die opening / closing device.

[0002]

2. Description of the Related Art Conventionally, in a die apparatus having a die such as an extrusion molding T die, a coating die, a hot melt die, and a fonten die, the die is arranged at the tip of the main body of the apparatus and melted from the die. Liquid products such as resins, coating liquids, and melt materials are discharged to form films, sheets, laminated products, etc., coating, and adhesive processing to produce products. ing.

FIG. 2 is a sectional view of a conventional die. In addition,
In this case, the extrusion molding T die will be described.

In the figure, reference numerals 11 and 12 denote a pair of first and second die bodies which form a die. The first and second die bodies 11 and 12 have a predetermined width and are arranged so as to face each other, whereby the first and second die bodies 1 and 1 are formed.
A manifold 13 and a slit 14 are formed between 1 and 12.

An adjustment lip 15 is movably attached to the first die body 11, and the second die body 1
A fixing lip 16 is fixed to the position 2. Then, by rotating the adjustment bolt 17 to slide the adjustment lip 15 with respect to the first die body 11, the gap of the slit 14 can be adjusted.

Reference numeral 19 is an injection port for injecting a resin as a liquid substance supplied from a device body (not shown), and the manifold 13 is a main manifold portion 13a formed in communication with the injection port 19. And a land portion 13b extending downward from the main manifold portion 13a to the slit 14. The main manifold portion 13a has a substantially semicircular shape on the injection port 19 side so that the resin smoothly spreads in the width direction.
The b side has a shape that gradually becomes thinner from the upper side to the lower side.

Therefore, the resin melted in the main body of the apparatus is injected into the main manifold portion 13 through the injection port 19.
a, is uniformly spread in the width direction within the main manifold portion 13a, and is discharged from the slit 14.

By the way, since the manifold 13 has a special shape, it is impossible to form a die by a simple boring process.

Therefore, the first and second die bodies 11, 12 are
The die is formed by processing each of them into a predetermined shape and tightening them with bolts (not shown).

[0010]

However, in the above-mentioned conventional die apparatus, it is necessary to open the die in accordance with product management and die maintenance.

For example, the resin may locally adhere to the inlet 19 or the manifold 13 as a foreign matter depending on the flow state of the resin. In that case, the foreign matter changes the flow state of the resin and is discharged from the slit 14. Thickness unevenness occurs in the resin and the quality of the product deteriorates. Therefore,
It is necessary to monitor the condition of the product, open the die and inspect the inner surface of the inlet 19, the manifold 13 and the slit 14, and remove foreign substances.

When the type of resin is changed, it is necessary to open the die to completely remove the resin that has adhered to the inner peripheral surfaces of the injection port 19, the manifold 13 and the slit 14 before the change. When changing the above, it is necessary to open the die and set plugs (not shown) at both ends of the slit 14, and when forming a stripe of a predetermined width on the film by coating, open the die and set the predetermined position of the slit 14. It is necessary to set a shim (not shown).

In this case, it is necessary not only to remove the die from the apparatus main body and move it to another position but then to open it, but also to finely adjust the attachment position etc. after reattaching the die to the apparatus main body. .

Therefore, not only is the work troublesome,
The operating time of the die device is shortened accordingly.

The present invention provides a die opening / closing device that solves the problems of the conventional die device, can simplify the work involved in opening / closing the die, and can prolong the operating time of the die device. The purpose is to do.

[0016]

Therefore, in a die opening / closing apparatus of the present invention, a die including a device body and a plurality of die bodies, and a manifold and a slit being formed between the die bodies, A support bracket, a guide bar installed between the support brackets, and at least one die main body among the die main bodies are moved along the guide bar with respect to another die main body to move the die. Drive means for selectively placing in a closed position and an open position.

In another die opening / closing device of the present invention, the die is further placed in a vertical direction.

In still another die opening / closing device of the present invention, the die is placed horizontally.

In still another die opening / closing device of the present invention, the die bodies are moved in a direction in which they come in contact with and separate from each other.

In still another die opening / closing apparatus of the present invention, one of the die bodies is fixed to the apparatus body, and the other die body of the die bodies is the one body. It can be moved toward and away from one die body.

[0021]

In still another die opening / closing apparatus of the present invention, one of the die bodies is fixed to the apparatus body, and the other die body of the die bodies is the die body. It can be moved in the direction that slides with respect to one die body.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In the first embodiment, the die device equipped with the extrusion-molded T die is described.
The present invention can be applied to a die device equipped with a die such as a coating die, a hot melt die, and a fonten die.

FIG. 1 is a side view of the main parts of a die opening / closing device according to the first embodiment of the present invention, and FIG. 3 is a front view of the main parts of the die opening / closing device according to the first embodiment of the present invention.

In the drawing, 21 is a die opening / closing device,
The die opening / closing device 21 includes a device body 21a, a crosshead 22, and a supply pipe 2 for supplying a resin as a liquid substance.
3, an opening / closing mechanism 25 and a deckle 26. Also,
24 is a die, and the die 24 is composed of, for example, a pair of first and second die bodies 31 and 32, and the first and second die bodies 31 and 32 are films, sheets,
The manifold 3 is provided between the first and second die bodies 31 and 32 having a length set corresponding to the width of a product such as a laminated product and arranged to face each other.
3 and the slit 34 are formed.

An adjusting lip (not shown) is movably attached to the first die body 31, and a fixing lip (not shown) is fixed to the second die body 32. Then, by rotating an adjustment bolt (not shown), the adjustment lip is slid with respect to the first die main body 31 to adjust the gap of the slit 34.

An injection port (not shown) for injecting the resin supplied from the apparatus main body 21a is formed, and the manifold 33 is a main manifold portion 33a formed in communication with the injection port, and the main manifold portion. The land portion 33b extends downward from 33a to the slit 34. And the main manifold portion 33a
Has a substantially semicircular shape on the injection port side and has a shape that gradually becomes thinner from the upper side to the lower side on the land portion 33b side so that the resin can spread smoothly in the width direction.

Therefore, the resin melted in the apparatus main body 21a passes through the crosshead 22 and is sent to the main manifold portion 33a through the injection port, and is uniformly spread in the width direction in the main manifold portion 33a. It is discharged from the slit 34. In this case, it is preferable to change the width of the resin discharged from the slit 34 according to the width of the product. Therefore, the deckles 26 are arranged at both ends in the axial direction of the die 24 so as to be capable of advancing and retreating (moving in the left-right direction in FIG. 3), and the respective deckles 26 are moved in correspondence with the width of the product, so that the slits 34 are removed. The width of the discharged resin is changed.

By the way, it is necessary to open the die 24 as the product is managed and the die 24 is maintained.

For example, depending on the flow state of the resin, the resin may locally adhere to the inlet or the manifold 33 as foreign matter. In that case, the foreign matter changes the flow state of the resin and the resin discharged from the slit 34. Thickness unevenness occurs and the quality of the product deteriorates. Therefore, it is necessary to monitor the state of the product, open the die 24 and inspect the inner surfaces of the inlet, the manifold 33 and the slit 34, and remove foreign substances.

When the type of resin is changed, the die 2
4 must be opened to completely remove the resin before change adhering to the inner peripheral surfaces of the inlet, the manifold 33 and the slit 34. When changing the discharge width of the resin, the die 24 is opened to open both ends of the slit 34. It is necessary to set a plug (not shown).

Therefore, an opening / closing mechanism 25 is provided to open / close the die 24. The opening / closing mechanism 25 includes a die 24
Support bar 4 arranged so as to extend in the thickness direction of the
1, second support bars 42 fixed to both ends of the first support bar 41, support brackets 43, 44 fixed to both ends of each second support bar 42, between the support brackets 43, and support Guide bars 46 and 47 installed between brackets 44, and guide bars 46 and 47, respectively.
Blocks 52, 52 slidably arranged along
Equipped with. Then, the first and second die bodies 31, 32 are fixed to the respective moving blocks 51, 52. The second support bars 42 are spaced from each other by a predetermined distance L1,
Further, they are arranged so as to extend in the length direction of the die 24, that is, in the width direction of the product.

Driving means (not shown) is attached to the moving blocks 51, 52, and the first and second die bodies 31, 32 are driven by driving the driving means.
Are moved in the horizontal direction with respect to the apparatus main body 21a and with respect to each other. As the driving means, a manual mechanism (for example, a screw and a handle), a pneumatic cylinder,
A hydraulic cylinder, an electric motor, etc. can be used.

In the present embodiment, the first and second die bodies 31 and 32 are moved in a direction in which they approach and separate from each other, that is, in the horizontal direction. As a result, the die 24 is selectively placed in the closed position shown by the solid line in FIG. 1 and the open position shown by the dashed line.

Therefore, the die 24 is attached to the apparatus main body 21a.
It can be opened without removing it from the machine, and since it is not necessary to finely adjust the position of the die 24 after the die 24 is closed again, not only can the work involved in opening and closing the die 24 be simplified, but The operating time of the device can be lengthened accordingly.

When the driving means is stopped, the first and second die bodies 31 and 32 are held at predetermined positions by the inertia of the opening / closing mechanism 25. Therefore, the first and second die bodies 3 are held.
When the first and second die bodies 31, 32 are placed in the closed position, it is not necessary to connect the first and second die bodies 31, 32 with bolts or the like. Therefore, the structure of the die 24 can be simplified, and the work involved in opening and closing the die 24 can be simplified.

In the present embodiment, the die 24 is opened by moving both the first and second die bodies 31, 32, but the first and second die bodies 31, 32 are The die 24 can also be opened by moving only one of them.

In the present embodiment, the resin is discharged vertically from the slit 34 by vertically placing the first and second die bodies 31 and 32. By horizontally placing the two die bodies 31 and 32, the resin can be discharged horizontally from the slit 34. Furthermore, the first and second die bodies 31,
It is also possible to tilt 32 at any angle.

In the present embodiment, the moving blocks 51 and 52 are slid along the guide bars 46 and 47 to open the die 24.
It is possible to open the die 24 by forming at least one of the guide bars 46 and 47 by a screw shaft and at least one of the moving blocks 51 and 52 by a nut, and rotating the screw shaft. For example, when the guide bar 46 is formed by a screw shaft,
The guide bar 4 is formed by forming left and right screws on the first die body 31 side and the second die body 32 side with the mating surfaces of the first and second die bodies 31, 32 as boundaries.
It is possible to move the moving blocks 51 and 52 in the horizontal direction only by rotating 6 to selectively place the die 24 in the closed position and the open position.

Next, the second to fourth embodiments of the present invention will be described in which the first and second die bodies 31 and 32 are provided horizontally. In the second to fourth embodiments, a die device including a coating die is described. However, the present invention is applied to a die including a die such as an extrusion-molded T die, a hot melt die, and a fonten die. It can be applied to devices.

FIG. 4 is a side view of the die according to the second embodiment of the present invention, and FIG. 5 is a front view of the die according to the second embodiment of the present invention.

In the figure, 59 is an opening / closing mechanism, 60 is a backup roller, 61 is a first die main body fixed to an apparatus main body (not shown), and 62 is the apparatus main body and the first main body.
Is a second die body movably arranged in a direction perpendicular to the die body 61 of the first die body 61.
A die 64 is composed of 1, 62.

In this case, a processed product, for example, a film (not shown) is conveyed, and while the film passes between the roller 60 and the die 64, the coating liquid as a liquid substance is discharged from the slit 34 and attached to the film. By doing so, coating can be performed. Further, stripes having a predetermined width can be formed on the film by discharging the coating liquid in a band shape on the film at a plurality of positions in the axial direction of the roller 60. For this purpose, the slit 3
A plurality of shims (not shown) are set at predetermined positions 4 and the coating liquid supplied from the manifold 33 flows between the shims.

In this case, it is necessary to open the die 24 as the product is managed and the die 24 is maintained, and it is necessary to open the die 24 to set the shim at a predetermined position of the slit 34.

Therefore, guide bars 65 are provided in the vicinity of both ends in the axial direction of the first die body 61, respectively.
Guide sleeves 66 are attached in the vicinity of both ends of the second die body 62 in the axial direction. The lower end of each guide bar 65 is fixed to the first die body 61, and the second die body 62 and each guide sleeve 66.
And extends upward to guide the second die body 62.

A screw shaft 67 is attached to the center of the first die body 61, and a nut 68 is attached to the center of the second die body 62 by being screwed with the screw shaft 67. To be The screw shaft 67 has a lower end rotatably supported by a bearing 69 with respect to the first die body 61, and has a second die body 62 and a nut 68.
The handle 90 is attached to the upper end of the handle 90. The opening / closing mechanism 59 includes a guide bar 65, a guide sleeve 66, a screw shaft 67, and a nut 68.
And a handle 90. Further, the screw shaft 67 and the nut 68 constitute movement direction converting means for converting rotational movement into linear movement.

Therefore, when the handle 90 is operated to rotate the screw shaft 67, the nut 68 is moved in the vertical direction, and accordingly, the second die main body 62 is moved to the apparatus main body and the first die main body. It is moved with respect to 61. In this case, the second die body 62 has the guide bar 65.
Along the direction of the first die main body 61, that is, in the vertical direction. As a result, the die 64 can be selectively placed in the closed position shown by the solid line in FIG. 4 and the open position shown by the alternate long and short dash line. In the present embodiment, the screw shaft 67 is rotated by operating the handle 90 to open / close the die 64. The die 64 can also be opened and closed by driving the source.

Therefore, the die 64 can be opened without removing it from the main body of the apparatus, and it is not necessary to finely adjust the position of the die 64 after the die 64 is closed again. Can be simplified, and the operating time of the die device can be lengthened accordingly.

In this embodiment, the die 64 is opened by moving only the second die main body 62, but by moving both the first and second die main bodies 61, 62. The die 64 can also be opened.

In the present embodiment, the coating liquid is discharged horizontally from the slit 34 by horizontally placing the first and second die bodies 61 and 62. By vertically placing the second die bodies 61 and 62, the coating liquid can be discharged vertically from the slit 34. Further, the first and second die bodies 6
It is also possible to incline 1, 62 at any angle.

FIG. 6 is a side view of a die according to the third embodiment of the present invention. In addition, about the thing which has the same structure as 2nd Embodiment, the description is abbreviate | omitted by giving the same code | symbol.

In the figure, reference numeral 72 denotes a second die body movably arranged with respect to the first die body 61 about a hinge 73 as an opening / closing mechanism, that is, rotatable. The first and second die bodies 61 and 72 form a die 74.

In this case, the second die body 72 is moved in the direction of rotation with respect to the apparatus body and the first die body 61 (not shown) by driving the driving means (not shown). As a result, the second die body 72 is
It can be selectively placed in the closed position shown by the solid line and the open position shown by the dash-dotted line. A manual mechanism, a pneumatic cylinder, a hydraulic cylinder, an electric motor or the like can be used as the driving means.

Therefore, the die 74 can be opened without removing it from the main body of the apparatus, and it is not necessary to finely adjust the position of the die 74 after the die 74 is closed again. Can be simplified, and the operating time of the die device can be lengthened accordingly.

In the present embodiment, the die 74 is opened by moving only the second die main body 72, but by moving both the first and second die main bodies 61, 72. The die 74 can also be opened.

Further, in the present embodiment, the first and second die bodies 61, 72 are horizontally placed so that the resin as a liquid substance is discharged horizontally from the slit 34 (FIG. 4). However, the first and second die bodies 6
It is also possible to discharge the resin in the vertical direction from the slit 34 by placing 1 and 72 vertically. Further, the first and second die bodies 61 and 72 can be tilted at any angle.

FIG. 7 is a side view of the die according to the fourth embodiment of the present invention. In addition, about the thing which has the same structure as 2nd Embodiment, the description is abbreviate | omitted by giving the same code | symbol.

In the figure, reference numeral 82 designates a second die body which is movably arranged in a sliding direction with respect to the first die body 61, that is, in the horizontal direction. A die 84 is composed of 61 and 82. Also, 8
3 is a sliding mechanism as an opening / closing mechanism for moving the second die body 82, and the sliding mechanism 83 is rotatably supported with respect to the first die body 61,
A screw shaft (not shown) that extends in the horizontal direction and a nut (not shown) that is fixed to the second die body 82 and that is screwed onto the screw shaft, are connected to the screw shaft and drive means (not shown). . It should be noted that the screw shaft and the nut constitute movement direction conversion means for converting rotational movement into linear movement.

Therefore, when the screw shaft is rotated by driving the driving means, the second die body 82 is moved with respect to the apparatus body (not shown) and the first die body 61. In this case, the second die main body 82 can be selectively placed in the closed position shown by the solid line and the open position shown by the alternate long and short dash line by moving it in the horizontal direction. A manual mechanism, a pneumatic cylinder, a hydraulic cylinder, an electric motor or the like can be used as the driving means.

Therefore, the die 84 can be opened without removing it from the apparatus main body, and it is not necessary to finely adjust the position of the die 84 after the die 84 is closed again. Can be simplified, and the operating time of the die device can be lengthened accordingly.

In the present embodiment, the die 84 is opened by moving only the second die main body 82, but by moving both the first and second die main bodies 61, 82. The die 84 can also be opened.

In the present embodiment, the first and second die bodies 61 and 82 are horizontally placed so that the resin as a liquid substance is discharged horizontally from the slit 34 (FIG. 4). However, the first and second die bodies 6
It is also possible to discharge the resin in the vertical direction from the slit 34 by vertically placing the Nos. 1 and 82. Furthermore, the first and second die bodies 61 and 82 can be tilted at any angle.

FIG. 8 is a side view of a die according to the fifth embodiment of the present invention. In addition, about the thing which has the same structure as 2nd Embodiment, the description is abbreviate | omitted by giving the same code | symbol.

In the figure, reference numeral 91 is a first die body fixed to an apparatus body (not shown), and 92 is a second die body which is moved in a direction in which the first die body 91 is brought into contact with or separated from the first die body 91, that is, a vertical direction. The die main body 93 is a third die main body that is moved in a direction in which it comes in contact with and separates from the first and second die main bodies 91 and 92.

The first to third die bodies 91 to 93 form a multi-layer die 94. In addition, in the present embodiment, the die 94 is composed of the first to third die bodies 91 to 93, but the die may be composed of four or more die bodies.

In this case, by driving an opening / closing mechanism (not shown) to move the second and third die bodies 92, 93, the die 94 is moved to the closed position shown by the solid line in the figure.
And can be selectively placed in the open position indicated by the dash-dotted line.

The present invention is not limited to the above-mentioned embodiments, but can be variously modified within the scope of the present invention, and they are not excluded from the scope of the present invention.

[0069]

As described in detail above, according to the present invention, in the die opening / closing device, the device main body and the plurality of die main bodies are formed, and the manifold and the slit are formed between the respective die main bodies. A die, a support bracket, a guide bar installed between the support brackets, and at least one of the die bodies is moved along the guide bar with respect to another die body. Drive means for selectively placing the die in a closed position and an open position.

In this case, the die can be opened without removing it from the main body of the apparatus, and it is not necessary to finely adjust the position of the die after the die is closed again. Therefore, the work involved in opening and closing the die is simplified. In addition, the operating time of the die device can be lengthened accordingly.

[Brief description of drawings]

FIG. 1 is a side view of essential parts of a die opening / closing device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of a conventional die.

FIG. 3 is a front view of the main parts of the die opening / closing device according to the first embodiment of the present invention.

FIG. 4 is a side view of a die according to a second embodiment of the present invention.

FIG. 5 is a front view of a die according to a second embodiment of the present invention.

FIG. 6 is a side view of a die according to a third embodiment of the present invention.

FIG. 7 is a side view of a die according to a fourth embodiment of the present invention.

FIG. 8 is a side view of a die according to a fifth embodiment of the present invention.

[Explanation of symbols]

21 Die opening / closing device 21a Device body 24, 64, 74, 84, 94 dies 25, 59 open / close mechanism 31, 61, 91 First die body 32, 62, 72, 82, 92 Second die body 33 Manifold 34 slits 93 Third die body

Front page continuation (58) Fields surveyed (Int.Cl. ⁷ , DB name) B29C 47/00-47/96 B21C 3/00-3/18

Claims (6)

(57) [Claims] 1. A die comprising (a) a device body, (b) a plurality of die bodies, and a manifold and a slit formed between the die bodies, (c) a support bracket, and (d). A guide bar installed between the support brackets, and (e) closing at least one of the die bodies by moving the die body relative to the other die bodies along the guide bar. A die opening / closing device having a driving means selectively placed in the open position and the open position. 2. The die is vertically oriented.
The die opening / closing device described in. 3. The die is placed horizontally.
The die opening / closing device described in. 4. The die opening / closing device according to claim 1, wherein the die bodies are moved in a direction in which the die bodies come into contact with and separate from each other. 5. A die body of one of the die bodies is fixed to an apparatus body, and a die body of the other die body of each die body is fixed to the die body of the one die. The die opening / closing device according to claim 1, wherein the die opening / closing device is moved in a direction of approaching and separating . One die body of 6. (a) before SL each die body is fixed to the apparatus main body, (b) the other die body out of the die body to said one die body The die opening / closing device according to claim 1, which is moved in a sliding direction.