JP2022013274A - Liquid distribution mold - Google Patents

Abstract

To provide a distribution mold capable of: easily processing with a drill, etc.; realizing weight saving or reduction of production cost; easily adapting to a die for molding a wide, sheet-like resin composition or a die for wildly applying a paint, etc. without connecting dies, etc.; and preventing processing from being difficult and preventing resin degradation, or quality deterioration.SOLUTION: A liquid distribution mold comprises: a mold body 2 including a hollow hole 20 extending in a width direction, a resin supply channel 21 that causes an outside to communicate with a side of an inner surface of the hollow hole and supplies liquid via an inflow port 21a opened to the inner surface, and a slit or a hole row 22 that causes an inner surface side of the hollow hole 20 to communicate with the outside and discharges the liquid via an introduction port 22a opened on the inner surface; and an inner mold 3 that is mounted to the inner surface side of the hollow hole 20 and forms a clearance between an outer peripheral surface 30b thereof and an inner peripheral surface 20b of the hollow hole, the clearance serving as a distribution channel 4 that guides the liquid supplied from the inflow port 21a to the introduction ports 22a of the slit or hole row 22 while spreading the liquid in the width direction.SELECTED DRAWING: Figure 1

Description

The present invention constitutes a die for producing a sheet-shaped resin molded product such as a non-woven fabric sheet, a resin film, or a resin sheet by discharging molten resin, and a die for a coater in which paint or the like is applied to the surface of the sheet or the like. Regarding distribution molds.

As this type of liquid distribution mold, the applicant has already been used for dies for molding sheet-shaped resin molded products such as non-woven sheets, resin films, and resin sheets, which are lightweight, easy to process, and reduce production costs. , Proposes a resin distribution mold that can realize stable quality (see Patent Document 1). As shown in FIGS. 10 to 12, the basic configuration of the resin distribution mold has a simple structure in which both ends of the mold main body 102 provided with the through holes 120 extending in the sheet width direction are closed by the closing member 105. The molten resin is supplied from the inflow port 121a of the resin supply path 121 leading to the through hole 120, and is discharged from the hole row 122 (nozzle row) leading to the resin discharge portion 123. Although not shown, the supply of the molten resin to the resin supply path 121 is a generally widely used method, and a method of feeding the molten resin heated and melted by an extruder to the resin supply path 121 by a gear pump is used. Can be taken.

This simple structure resin distribution die is particularly suitable for dies for producing non-woven fabrics in which the fluidity of the resin is extremely high. Further, in Patent Document 1, as a countermeasure for a resin having high viscosity and relatively low fluidity, the nozzle row is divided into a plurality of regions, and the diameter of the nozzle hole is changed in each region to supply the amount in the width direction. It is also proposed to make it uniform.

Further, in Patent Document 1, the through hole 120 solves the problem that drilling becomes difficult because the length of the through hole 120 becomes long when a wide sheet is targeted (see paragraph 0037 of Patent Document 1). If the pore diameter is increased, the residence time of the molten resin becomes long and deterioration of the resin becomes a problem. Therefore, it is also proposed to connect a plurality of blocks having a length that facilitates pore processing. However, such a connected structure requires an increase in size and accuracy as the device becomes large, which causes an increase in cost and a cause in quality deterioration. Such a problem is a problem that also applies to a liquid distribution die for a coater die that applies paint or the like to the surface of a sheet or the like.

Japanese Unexamined Patent Publication No. 2018-5232

Therefore, what the present invention seeks to solve in view of the above-mentioned situation is that it can be easily processed by a drill or the like, can be reduced in weight and production cost, and has a wide sheet shape, as in Patent Document 1. A liquid distribution mold that can be easily handled without connecting to dies that mold resin compositions or dies that are widely coated with paint, etc., and can prevent difficult processing, deterioration of resin, and deterioration of quality. It is in the point of providing.

As shown in FIGS. 13 to 16, the present inventor first communicates with the hollow hole 20 extending in the width direction from the outside to the inner surface side of the hollow hole 20 and supplies the liquid through the inflow port 21a opened in the inner surface. A mold main body 2 having a resin supply path 21 and a slit or a hole row 22 that communicates with the outside from the inner surface side of the hollow hole 20 and discharges a liquid through an introduction port 22a opened in the inner surface, and the hollow hole 20. The liquid supplied from the inflow port 21a between the outer peripheral surface 30b and the inner peripheral surface 20b of the hollow hole is spread in the width direction and introduced into the slit or the hole row 22a. A distribution mold 1 including an internal mold 3 that forms a gap as a distribution path 4 leading to the above is proposed (Japanese Patent Application No. 2018-242691: hereinafter referred to as "prior invention").

According to this prior invention, the size of the distribution path 4 can be adjusted by the outer diameter dimension of the internal die 3 while making the hollow hole 20 into a hole having a size that is easy to drill, and therefore, a wide sheet. Even when it is applied to a die for molding a resin composition or a die for applying a wide range of paint or the like, it is only necessary to process a hollow hole 20 which is long in the width direction and attach an internal mold 3 which is also long in the width direction. Therefore, it is possible to easily deal with the problem, and it is possible to reduce the weight and the production cost while suppressing the difficulty of processing, the deterioration of the resin, and the deterioration of the quality due to the connection accuracy.

By the way, when a liquid is supplied from the central inflow port 21a to such a distribution path 4, the smaller the flow rate of the liquid and the higher the viscosity of the liquid, the more the center of the slit or the hole row 22 corresponding to the inflow port 21a. It becomes easier to discharge in the vicinity, and the closer to both ends in the width direction, the more difficult it is for the liquid to reach and discharge. In the prior invention, by devising the shape of the internal mold 3 (for example, reducing the diameter from the central portion of the internal mold toward both ends), the size of the gap as the distribution path 4 is adjusted in the width direction (hollow). It is also proposed that the liquid is uniformly distributed to the inlet 22a of the slit or the hole row 22 by varying in the axial direction of the hole or the internal mold).

However, even if the distribution path is devised in this way to achieve uniform distribution, in particular, the slits at both ends of the distribution path 4 or the region of the corner opposite to the hole row 22 (indicated by reference numeral R1 in the example of FIG. 13). In the case of a material in which the flow of the liquid tends to be stagnant and the liquid tends to be thermally deteriorated in the region), the deterioration of the liquid in the region becomes a problem. For example, in the case of a non-woven fabric / film manufacturing apparatus that flows a molten resin, depending on the conditions, the molten resin may stagnate in the above region, causing thermal deterioration, carbonization, and discoloration of both ends of the nonwoven fabric or film, resulting in defects. Can be the cause of. Further, when the liquid stays in this way, the heat history (time exposed to heat) of the discharged liquid greatly differs depending on the position of each hole of the slit or the hole row 22, and the quality of the above-mentioned nonwoven fabric or film The above variation is likely to occur.

As a result of diligent studies in view of the current situation, the present inventor has found a "corner" such as the above-mentioned region R1 in the middle of the flow of the liquid from the inflow port 21a to the slit or the introduction port 22a into the hole row 22. The presence of the liquid tends to cause the liquid to stay in the corners, and if the liquid inlets are provided at both ends to distribute the liquid toward the center, the liquid from both ends at the center is provided. We have found that it is possible to avoid the presence of "corners" in the middle of the flow path of the liquid due to the merging of the flows, and have completed the present invention.

That is, the present invention includes the following inventions.
(1) A liquid distribution mold for forming a die that discharges a liquid in a state of spreading in the width direction and spreading the supplied liquid in the width direction, a hollow hole extending in the width direction, and the hollow hole from the outside. A liquid supply path that communicates with the inner surface side of the hole and supplies the liquid through an inlet opened to the inner surface, and a slit that communicates with the outside from the inner surface side of the hollow hole and discharges the liquid through an introduction port opened to the inner surface. Alternatively, the liquid supplied from the inflow port is spread in the width direction between the mold body having a hole row and the inner surface side of the hollow hole and between the outer peripheral surface thereof and the inner peripheral surface of the hollow hole. It is provided with an internal mold that forms a gap as a distribution path leading to the slit or the inlet to the hole row, and the inlet of the liquid supply path is at least both ends in the width direction on the inner surface of the hollow hole. Liquid distribution molds provided in each.

(2) The liquid distribution mold according to (1), wherein the inflow port of the liquid supply path is also provided in the middle of the inner surface of the hollow hole between both ends.

(3) The hollow hole is a hole having a circular cross section, and the internal mold is a mold having a columnar or cylindrical main body portion mounted on the inner surface side of the hollow hole, (1) or (1) or ( 2) The liquid distribution mold described. Here, the "cylindrical" and "cylindrical" main body parts have irregularities and inclined surfaces formed on the outer peripheral surface thereof, and the outer diameter fluctuates in the circumferential direction and the axial direction (width direction), for example, FIG. , Those having a shape in which the truncated cones are butted as shown in FIG. 6, those having irregularities or cut surfaces as shown in FIGS. 7 and 8, and combinations thereof are also included.

(4) The liquid distribution mold according to any one of claims (1) to (3), wherein the distribution path is a flow path in which the size of the gap is uniform or fluctuates along the circumferential direction. ..

(5) A concave or cut surface extending in the axial direction is formed at a circumferential position corresponding to the inflow port on the outer peripheral surface of the main body portion of the internal mold, whereby the circumferential position where the inflow port of the distribution path is located. The resin distribution mold according to (4), wherein the gap between the two is set large.

(6) The liquid distribution according to any one of (1) to (5), wherein the distribution path is a flow path in which the size of the gap is uniform or fluctuates along the axial direction (width direction). Mold.

(7) The liquid distribution according to (6), wherein the distribution path is a flow path in which the size of the gap increases in the axial direction (width direction) as the size of the gap increases away from the position where the inflow port is located. Type.

According to the distribution mold according to the present invention as described above, the internal mold is mounted on the inner surface side of the hollow hole extending in the width direction, and the distribution path is formed in the gap between the hollow hole and the internal mold. Since it is formed, the size of the distribution path can be adjusted by the outer diameter of the internal mold while making the hollow hole a hole large enough to be easily drilled. Therefore, a wide sheet-like resin composition can be obtained. Even when it is applied to a die to be molded or a die to which a wide range of paints are applied, it can be easily handled by simply processing a hollow hole that is long in the axial direction and mounting an internal mold that is also long in the axial direction. It is possible to reduce the weight and production cost while suppressing the difficulty of processing, deterioration of resin, and deterioration of quality due to connection accuracy.

Further, in particular, since the inflow ports of the liquid supply path are provided at least at both ends in the width direction on the inner surface of the hollow hole, there are no "corners" in the middle of the liquid flow path, and the liquid is thermally deteriorated. Even in the case of a material that is easy to use, deterioration of the liquid and fluctuation of the thermal history are avoided. And quality variation can be prevented.

The vertical sectional view which shows the distribution mold which concerns on 1st Embodiment of this invention. A cross-sectional view taken along the line AA of FIG. Similarly, the bottom view of the distribution mold as seen from the discharge part side. The perspective view which shows the internal mold also used for a distribution mold. An explanatory diagram showing a resin supply pipe that also supplies molten resin to a distribution mold. The vertical sectional view which shows the distribution mold which concerns on the 2nd Embodiment of this invention. (A) is a vertical sectional view showing a distribution mold according to a third embodiment of the present invention, and (b) is a sectional view taken along the line BB of (a). (A) is a vertical cross-sectional view showing a distribution mold according to a fourth embodiment of the present invention, (b) is a CC cross-sectional view of (a), and (c) is a DD cross-sectional view of (a). figure. (A) is a side view showing a modified example of the internal mold, (b) is a cross-sectional view taken along the line EE of (a), and (c) is a perspective view. A vertical sectional view showing a conventional distribution mold according to Patent Document 1. Similarly, a cross-sectional view of a conventional distribution mold. Similarly, the bottom view of the conventional distribution mold as seen from the discharge part side. The vertical sectional view which shows the distribution die which concerns on the prior invention. A cross-sectional view of a distribution die also according to a prior invention. The bottom view of the distribution mold according to the prior invention as seen from the discharge part side. The perspective view which shows the internal mold used for the distribution mold which also concerns on the prior invention. (A) is a perspective view showing another example of the internal mold according to the prior invention, and (b) is a cross-sectional view. (A) is a vertical sectional view showing a distribution mold according to an application example of the present invention, (b) is a sectional view taken along the line FF of (a), and (c) is a perspective view showing an internal mold.

Next, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, a first embodiment of the distribution mold according to the present invention will be described with reference to FIGS. 1 to 5. In each of the following embodiments, an example will be described in which a die for forming a sheet-shaped resin molded product by discharging molten resin is configured, and the supplied molten resin is configured as a resin distribution mold that spreads in the width direction. As the "liquid" to which the present invention can be applied, in addition to the die for molding such a sheet-shaped resin molded product, a die for a coater that discharges a liquid such as molten resin or paint and applies it to the surface of a sheet or the like is used. It can also be widely used as a liquid distribution mold that constitutes and spreads the supplied liquid in the sheet width direction. The sheet-shaped resin composition includes a resin film, a resin sheet, and the like, in addition to the non-woven fabric sheet.

The distribution die 1 constitutes a die for discharging the molten resin in a state of spreading in the width direction, and is a die for spreading the supplied molten resin in the width direction. As shown in FIGS. 1 to 3, the distribution die 1 constitutes a die. It is composed of a mold main body 2 and an internal mold 3 mounted on the inner surface side of a hollow hole 20 formed in the mold main body 2 extending in the width direction.

The mold body 2 further communicates with the inner surface side of the hollow hole 20 from the outside, and supplies the molten resin through the inflow port 21a opened in the inner surface, and the resin supply path 21 and the hollow hole 20 from the inner surface side to the outside. The hole row 22 that communicates and discharges the molten resin through the introduction port 22a that opens on the inner surface thereof, and the discharge portion 23 that is provided on the side opposite to the introduction port 22a of the hole row 22 and is composed of a concave groove extending in the sheet width direction. It is provided. Further, in the present invention, in particular, the resin supply passages 21 are provided on both ends in the width direction, whereby the inflow port 21a of the resin supply passage 21 is provided at least on both ends in the width direction on the inner surface of the hollow hole. ..

The hole row 22 of this example is composed of through holes that are branched from a plurality of positions along the sheet width direction of the hollow holes 20 and are extended to the discharge portion 23 side. The discharge portion 23 opens at a position corresponding to the opening groove of the nozzle body (not shown), and serves as a lip portion for supplying the molten resin to the nozzle body. In the following embodiments, all examples of the “hole row 22” will be described, but a slit may be provided instead of the hole row 22, or a combination of the hole row and the slit may be used.

Both the hollow hole 20 and the hole row 22 are straight straight holes formed by drilling a single block and having a circular cross section and a uniform cross-sectional area along the axial direction, and the resin supply path 21 is also drilled. It is a straight hole with a circular cross section formed by processing. Thereby, the hollow hole 20, the hole row 22, and the resin supply path 21 can be easily formed. Of course, it may be formed by machining other than drilling. Similarly, when a slit is used instead of the hole row 22, it can be easily formed by machining.

The hollow hole 20 long in the longitudinal direction is formed not by drilling but by extrusion molding of the mold body 2, and the hole row 22 and the resin supply path 21 are formed in the hollow hole 20 by drilling as described above. You can also. At least those in which the hollow holes 20 and the hole rows 22 can be formed from a single block by machining are preferable in terms of ease of machining as described above, but of course, another block attached thereto may be combined.

Then, by mounting the internal mold 3 on the inner surface side of the hollow hole 20, the molten resin supplied from the inflow port 21a is placed between the outer peripheral surface 30b and the inner peripheral surface 20b of the hollow hole in the width direction. A gap is formed as a distribution path 4 leading to the introduction port 22a of the hole row 22 while widening. In the present invention, as in the present example, the inflow ports 21a of the resin supply path 21 are provided at both ends, so that there is no "corner" that causes liquid accumulation in the middle of the flow through the distribution path 4, and the liquid is liquid. Even in the case of a material that easily deteriorates due to heat, deterioration of the liquid and fluctuation of the heat history are avoided. It is possible to prevent the occurrence of defects and variations in quality.

As shown in FIG. 5, the molten resin extruded from an external extruder (not shown) and pumped by a gear pump is passed through the branch portion 70 and the pipes 71 and 71 toward both ends in the width direction into the distribution die 1. It is supplied to the resin supply paths 21 and 21 at both ends, respectively. The distribution mold 1 distributes the molten resin supplied from the outside in the width direction (left-right lateral direction in FIG. 1, that is, the longitudinal direction of the distribution mold 1 of this example) through the distribution path 4. This is a mold for supplying the molten resin from the discharge unit 23 to a nozzle body (not shown). The mold main body 2 is heated to a predetermined temperature by a heater (not shown), and the molten state of the resin is maintained.

As shown in FIG. 4, the internal mold 3 has left and right flange portions 31, and the main body portion 30 between the flange portions 31 has thick ends, which are positions corresponding to the inflow port 21a of the resin supply path 21. , It is configured in a drum shape that gradually shrinks toward the center. The outer peripheral surfaces of the left and right flange portions 31 are in close contact with the inner peripheral surfaces 20b at both ends of the hollow hole 20, so that the intermediate main body portion 30 is fitted in the hollow hole 20 in a floating state.

Further, by attaching the closing member 5 to the mold main body 2 with bolts and nuts 50 from both ends, the internal mold 3 is fixed in the hollow hole 20 of the mold main body 2. The inflow port 21a of the resin supply path 21 described above is open at a position corresponding to the end portion of the main body portion 30 adjacent to the flange portion 31. Comparative example A large fluid pressure acts on the inner mold 3 on the upper side of the figure where the inflow port 21a of the resin supply path 21 is located. Therefore, if there is a risk of bending due to dimensions or the like, reinforcement as shown in FIG. It is preferable to provide a rib 34 for the purpose of preventing bending and maintaining a gap as designed in the distribution path 4.

In this way, the gap between the outer peripheral surface 30b of the main body 30 and the inner peripheral surface 20b of the hollow hole is uniform along the circumferential direction and gradually increases from both end positions to the central position along the axial direction. It constitutes a distribution path 4. This makes it possible to increase the resistance of the flow from both ends to the outlet where the resin is supplied, and decrease the resistance toward the center to make the flow from the outlet uniform. Such an internal die 3 was conceived as being able to be machined by a simple lathe processing, and has a shape in which both ends to which the resin is supplied are thick and each has a conical surface toward the center.

The conical surface of the internal mold is adjusted so that the resin supplied from both ends is uniformly discharged from the nozzle row according to the viscosity (fluidity) of the resin. Expressed qualitatively, if the inner diameter of the hollow hole 20 is constant, the higher the viscosity, the smaller the diameter at the center. With this structure, it is uniformly discharged from the hole row 22 without causing a retention point in the mold.

The hollow hole 20 is a hole having a circular cross section drilled as described above, and the internal mold 3 is a mold having a drum-shaped main body portion 30 mounted on the inner surface side of the hollow hole 20. The present invention is not limited to the hollow hole 20 and the main body portion 30 having such a shape, and may have a polygonal shape or other shapes.

The molten resin supplied from the outside through the resin supply path 21 fills the slit-shaped distribution path 4 and is discharged from the hole row 22 to the discharge unit 23. On the resin discharge side of the mold main body 2, there is a screw hole 24 into which a fixing bolt for fixing a lip mold provided with a sheet (not shown), a slit for a film, and a fine nozzle hole row for a non-woven fabric is screwed. It has been opened. As the structure and assembly form of the nozzle body and the air lip to be assembled to the distribution mold 1, conventionally known ones can be widely applied.

Next, the second embodiment will be described with reference to FIG. In this embodiment, the inflow port 21a of the resin supply path 21 is provided not only at both ends but also at the intermediate portion in the width direction. In the first embodiment, since the inflow port 21a is located only at both ends of the main body 30 of the internal mold 3, if the width direction (longitudinal direction) of the mold becomes long, a hole is formed. The thermal history of the liquid discharged from the vicinity of the center of the row 22 becomes long, which causes a problem that the quality of the liquid easily deteriorates. Therefore, when the mold becomes long in this way, as shown in FIG. 6, it is preferable to add an inflow port 21a to the intermediate portion and adopt a method in which the flow path can be shortened so that thermal deterioration does not become a problem. ..

The internal mold 3 of the present embodiment also has left and right flange portions 31, and the main body portion 30 between the flange portions 31 has a large position corresponding to the inflow port 21a and is located at the center between the adjacent inflow ports 21a and 21a. It is configured in a drum shape that gradually shrinks in diameter toward the position, and in this example, since there are two regions between the adjacent inlets 21a and 21a, the structure is such that the two drum shapes are connected in the axial direction. According to the present embodiment, it is possible to avoid quality deterioration even when forming a non-woven fabric, a film, a sheet, or the like which is longer in the width direction, that is, wider. In this example, one inlet 21a is added, but it is possible to add a plurality of inlets, not limited to one.

Next, a third embodiment will be described with reference to FIG. 7. In this embodiment, a concave groove 35 along the width direction (longitudinal direction) is provided at a position of an upper portion corresponding to the inflow port 21a in the circumferential direction of the outer peripheral surface 30b of the inner mold 3, and the outer periphery of the inner mold 3 is provided. A flow path region having a larger gap than other positions is secured at the upper position corresponding to the concave groove 35 in the distribution path 4 formed between the surface 30b and the inner peripheral surface 20b of the hollow hole. .. The flow path region formed by the concave groove 35 promotes the distribution action of the liquid supplied from the inflow port 21a in the width direction, and makes the discharge amount uniform in the width direction even for a liquid having low fluidity. It is a thing.

Also in the present embodiment, as in the first embodiment and the second embodiment, the positions at both ends corresponding to the inflow port 21a of the resin supply path 21 of the main body portion 30 of the internal mold 3 are thick and toward the central portion. It is preferable to form a drum shape that gradually shrinks in diameter. The dimensions of the groove 35 and the shape of the main body 30 can be appropriately determined by flow analysis and trial and error.

Next, a fourth embodiment will be described with reference to FIG. In this embodiment, a flat cut surface 36 along the width direction (longitudinal direction) is provided at an upper position corresponding to the inflow port 21a in the circumferential direction of the outer peripheral surface 30b of the inner mold 3 having a cylindrical shape. Is provided, and a gap is larger than other positions at the upper position corresponding to the cut surface 36 in the distribution path 4 formed between the outer peripheral surface 30b of the inner mold 3 and the inner peripheral surface 20b of the hollow hole. It secures the flow path area. The flow path region formed by the cut surface 36 promotes the distribution action of the liquid supplied from the inflow port 21a in the width direction, as in the case of the recessed groove 35 of the third embodiment, and is a liquid having low fluidity. The discharge amount can be made uniform in the width direction.

In the present embodiment, the depth h (difference between the central portion of the cut surface and the outer peripheral surface of the virtual cylinder) of the cut surface 36 is shallow at both ends corresponding to the inflow port 21a of the resin supply path 21, and the central portion. The cut surface 36 is set to gradually become deeper toward the surface, and the cut surface 36 is a flat surface inclined along the internal mold axial direction. That is, as shown in FIG. 8, the internal mold has a shape in which a cylinder is cut by two planes shown by a line connecting PQ, and in combination with the main body mold, from the position of the inflow port 21a to the intermediate position between the inflow ports. A wider space is gradually formed.

The inclination angle of the cut surface 36 with respect to the axis of the internal die and the degree of the cutting depth h can be estimated and determined by flow analysis. Such an internal mold 3 can be easily machined by a lathe and a milling cutter as in other embodiments.

FIG. 18 shows an example in which the concept of the fourth embodiment is applied to the example disclosed in the above-mentioned prior invention in which the resin supply path 21 and the inflow port 21a are provided only at the central position in the width direction. When the inflow port 21a of the liquid supply path is located at the center position as in the embodiment of the prior invention, the depth h of the cut surface 36 of the fourth embodiment corresponds to the inflow port 21a of the resin supply path 21. The central position, which is the position, is set to be shallow and gradually deepens toward both ends, and the cut surface 36 is a flat surface inclined along the internal mold axial direction. As a result, the distribution action of the liquid can be promoted, and the discharge amount can be made uniform in the width direction even for a liquid having low fluidity.

Although the embodiments of the present invention have been described above, the present invention is not limited to these examples, and it is needless to say that the present invention can be implemented in various forms without departing from the gist of the present invention.
The liquid distribution mold of the present invention is not necessarily limited to the one for discharging the liquid so as to have a uniform thickness in the width direction. Generally, when a sheet or film is molded, it is distributed so that the thickness is uniform, but it is also a preferable example to configure the distribution path so that the thickness is changed in the width direction.

1 Distribution mold 2 Mold body 3 Internal mold 4 Distribution path 5 Closure member 20 Hollow hole 20b Inner peripheral surface 21 Resin supply path 21a Inlet 22 Hole row 22a Inlet port 23 Discharge part 24 Screw hole 30 Main body part 30b Outer surface 31 Flange part 32 Joint part 33 Wiring hole 34 Rib 35 Concave groove 36 Cut surface 50 Bolt nut 70 Branch part 71 Piping 102 Mold body 105 Closure member 120 Through hole 121 Resin supply path 121a Inflow port 122 Hole row 123 Resin discharge part R1 region

Claims (2)

It is a liquid distribution mold for forming a die that discharges liquid in a state of spreading in the width direction and spreading the supplied liquid in the width direction.
A hollow hole extending in the width direction, a liquid supply path that communicates from the outside to the inner surface side of the hollow hole and supplies a liquid through an inlet opened to the inner surface, and a liquid supply path that communicates from the inner surface side of the hollow hole to the outside. A mold body having a slit or a row of holes for discharging liquid through an inlet opened on the inner surface,
An introduction port to the slit or the hole row, which is mounted on the inner surface side of the hollow hole and spreads the liquid supplied from the inflow port between the outer peripheral surface thereof and the inner peripheral surface of the hollow hole in the width direction. Equipped with an internal mold that forms a gap as a distribution path leading to
A liquid distribution mold in which the inlet of the liquid supply path is provided at least at both ends in the width direction on the inner surface of the hollow hole. The liquid distribution mold according to claim 1, wherein the inflow port of the liquid supply path is also provided in the middle of the inner surface of the hollow hole between the both ends.

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