TWI577457B - Mold with internal trimmer and mold - Google Patents

Description

Internal edger and mold for mold

The present invention relates to an internal edger for a mold which is liquid-tightly sealed as a width restricting member during die coating or extrusion molding, and a mold having the inner edger.

As a prior coating apparatus which continuously coats the surface of the moving web, a die coater is mentioned, for example. The die coater is composed of a mold formed by combining a pair of split mold members, and generally includes: a manifold extending in a longitudinal direction of the mold; and a slit extending from the manifold to a radially outer side of the mold The type of the die coater is, for example, a coating device having a coating width fixed type, which has a structure in which a slit is formed to an end portion in the width direction and a coating width is fixed in advance by a side plate or the like; or an inner side is fixed. The coating device of the device has a configuration in which the coating width can be arbitrarily set, for example, for extrusion molding or the like.

The coating device of the internal edger type is a coating device which is provided with an internal edger at both ends of the mold for adjusting the coating width, and has a mold which is respectively formed in the manifold and the slit The shaft-shaped edger main body portion in which the internal edger is disposed in a liquid-tight state, and the sheet-shaped or film-shaped edger auxiliary portion are described in, for example, Patent Document 1.

The coating device described in Patent Document 1 has a configuration in which the inner wall of the manifold corresponding to the mold is provided on the outer peripheral portion of the base portion of the edger main body portion corresponding to the die holder auxiliary portion. The annular gasket of the outer diameter of the dense state can be configured to maintain the liquid-tight state between the mold and the internal edger, and the internal edger can be disjointed in the mold without disassembling the mold. Move inside the tube so that the coating width can be easily performed Adjustment of degree.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. Hei 9-094510

However, in the case where the configuration of the annular gasket is provided in the body portion of the edger as in Patent Document 1, in order to sufficiently ensure the liquid-tight state, it is preferable to seal the gasket from the inner diameter of the manifold of the mold. The outer diameter is set to be as large as possible. However, if the outer diameter is set too large, the inner edger is moved in the manifold of the mold (strictly sliding) when the coating width is adjusted or When the internal edger is pulled out, the force required for the movement (hereinafter referred to as "moving force") becomes large, and the workability of the coating width tends to deteriorate. On the other hand, the adjustment of the coating width becomes If the outer diameter of the gasket is too small, the coating width can be easily adjusted. However, there is a concern that the liquid-tight state cannot be sufficiently ensured.

Therefore, the prior art coating apparatus has a self-contradictory relationship in terms of its structure and sufficient ease of adjustment of the liquid-tight state and the coating width, and it is desired to develop a novel technology that can achieve both of them.

SUMMARY OF THE INVENTION An object of the present invention is to provide an internal edger for a mold and a mold, wherein the internal edger of the mold can be sufficiently ensured by the fact that the body of the edging device of the internal edging device includes a reinforced seal portion having a specific structure. The liquid-tight state and the coating width are easily adjusted.

In order to achieve the above object, the gist of the present invention is as follows.

(1) An internal edger for a mold, which is disposed at both end portions of a mold, the mold being composed of a mold formed by combining a pair of divided mold members, and comprising: a manifold extending in a length direction of the mold; and a slit extending from the manifold to a radially outer side of the mold; and the mold inner edger includes: a shaft-shaped edger body portion, And having a surface shape corresponding to the manifold; and a sheet-shaped or film-shaped edger auxiliary portion extending from the edger body portion and having an outer surface shape corresponding to the slit; and the mold is used The internal edger is characterized in that at least a part of the region of the edger body portion where the edger auxiliary portion is disposed has a reinforced sealing portion which is reinforced to be filled in the manifold for coating Or a liquid-tight seal of the extruded liquid material, and the reinforcing seal portion has at least one sealing member including two or more membranes, the two or more membranes being attached to the inner edger at a position relative to the above When the mold moves, the inner wall of the manifold slides while being elastically deformed, and when the position of the inner edger is fixed relative to the mold, the inner wall is adhered to each other by the elastic restoring force in cooperation with each other.

(2) The internal edger for a mold according to (1) above, wherein the diaphragm constituting the sealing member has an outer diameter larger than a manifold diameter (rc).

(3) The internal edger for a mold according to the above (1) or (2), wherein the outer diameter (rb) of the diaphragm constituting the sealing member is larger than the manifold diameter (rc) by only 0.01 to 1 mm.

(4) The internal edger for a mold according to (1), (2), or (3), wherein each of the sealing members is further provided with a first spacer member between the diaphragms, and the first spacer member is relatively different The outer diameter of the pipe diameter (rc) is smaller.

(5) The internal edger for a mold according to the above (4), wherein the outer diameter of the first spacer member is smaller than the manifold diameter (rc) by only 0.001 to 3 mm.

(6) The internal edger for a mold according to (4) or (5) above, wherein the first interval is When the outer diameter of the member is rs and the outer diameter of the diaphragm is rb, the thickness ts of the first spacer member satisfies the following relationship: ts < (rb - rs).

(7) The internal edger for a mold according to any one of the preceding claims, wherein the reinforcing sealing portion includes at least two sealing members, and further includes a second spacing member between the sealing members. The second spacer member has an outer diameter smaller than the manifold diameter (rc).

(8) The internal edger for a mold according to the above (7), wherein the outer diameter of the second spacer member is smaller than the manifold diameter by only 0.001 to 3 mm.

The internal edge splicer for a mold according to any one of the above aspects, wherein the reinforced seal portion is provided in the inner edge arranging device in a region where the edging device auxiliary portion is disposed. In the front end side area.

(10) The internal edger for a mold according to any one of the above (1), wherein the number of sheets constituting each sealing portion is two.

The internal trimmer for a mold according to any one of the above aspects, wherein the diaphragm comprises a lubricative resin material.

(12) A mold comprising the internal edger for a mold according to any one of the above (1) to (11).

According to the present invention, there is provided an inner edger for a mold and a mold having the inner edger, wherein the mold has an inner edger because the body portion of the inner edger includes a reinforced seal having a specific configuration. Further, it is possible to sufficiently ensure the ease of adjustment of the liquid-tight state and the coating width.

1‧‧‧Mold

1a‧‧‧ Both ends

1b‧‧‧ Both ends

2‧‧‧Mold

2a‧‧‧Split mold components

2b‧‧‧Split mold components

3‧‧‧Management

4‧‧‧Slit

5‧‧‧Internal edger

6‧‧‧Edger body part

7‧‧‧Edger Auxiliary Department

8‧‧‧Enhanced seal

9‧‧‧A region of the edger body portion 6 in which the edger auxiliary portion 7 is disposed

9a‧‧‧The front end area in the area 9 of the internal edger 5

10‧‧‧2nd spacer

11‧‧‧ Sealing members

11a‧‧‧ diaphragm

11b‧‧‧ diaphragm

12‧‧‧1st spacer

13‧‧‧Internal edger insertion device

14‧‧‧Axis

Id‧‧‧Installation direction

L‧‧‧ Length direction

R‧‧‧ radially outer side

Ra‧‧‧outer diameter

Rb‧‧‧ outside diameter

Rc‧‧‧ manifold diameter

Rs‧‧‧ manifold diameter

tB‧‧‧ thickness

Tb1‧‧‧ thickness

Tb2‧‧‧ thickness

Ts‧‧‧ thickness

X‧‧‧ area

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view showing a state in which a representative internal edger according to the present invention is mounted before a mold.

Figure 2 is shown in the state after the internal edger shown in Figure 1 is mounted on the mold. Stereo view.

3 is a perspective view of a representative internal edger in accordance with the present invention.

Figure 4 is an enlarged perspective view of a portion of the internal edger surrounded by the area X of Figure 3.

Fig. 5 is a view for explaining the dimensional relationship between the second spacer member and the sealing member constituting the reinforcing seal portion of the internal edger shown in Fig. 3.

Fig. 6 is a view showing another embodiment of the internal edger, and is a view for explaining a state in which a first spacer member is disposed in a sealing member constituting the reinforcing sealing portion.

Hereinafter, an embodiment of the present invention will be described below with reference to the drawings.

1 is a perspective view showing a state in which a representative internal edger according to the present invention is mounted on a mold, and FIG. 2 is a state in which the internal edger shown in FIG. 1 is mounted on a mold. 3 is an enlarged perspective view of the internal edger shown in FIG. 1 when viewed from an obliquely upper position of the front end side thereof, and FIG. 4 is a part of the internal edger surrounded by the area X of FIG. FIG. 5 is a perspective view showing the relationship between the second spacer member and the sealing member constituting the reinforcing seal portion of the internal edger shown in FIG. 2.

The mold 1 shown in the figure is composed of a mold 2 formed by combining a pair of divided mold members 2a and 2b, and includes a manifold 3 extending in a longitudinal direction L of the through mold 2, and a slit 4 from which The manifold 3 extends toward the radially outer side R of the mold 2.

In order to adjust the coating width, a pair of inner edgers 5 (only one of the inner edgers shown) are disposed at both end portions 1a and 1b of the mold 1.

The inner edger 5 includes a shaft-shaped edger body portion 6 and a sheet-like or film-shaped edger auxiliary portion 7. The thickness of the edger auxiliary portion 7 is larger than the width of the slit 4, and the deviation is preferably ±2 μm. Further, when the thickness of the edge fixing device auxiliary portion 7 is thicker than the width of the slit 4, it may be configured as a multi-layer type edger auxiliary portion 7 including a plurality of sheets or sheets.

The edger body portion 6 has an outer surface shape corresponding to the manifold 3, and the edger assists The portion 7 extends from the edger body portion 6 and has a surface shape corresponding to the slit 4.

Furthermore, the main feature of the present invention is that the edger body portion 6 of the inner edger 5 includes a reinforcing seal portion 8 having a specific configuration, and more specifically, the edger body portion 6 is disposed with At least a portion of the region 9 of the edger auxiliary portion 7 has a reinforcing seal portion 8 in the front end region 9a of the fixed edge portion 5 in FIG. 3, and the reinforcing seal portion 8 is reinforced in the manifold 3 The liquid-tight seal of the liquid material for coating or extrusion molding, the reinforcing seal portion 8 has at least one sealing member 11 including two or more membranes as shown in FIG. 5, and has two sheets in FIG. The six sealing members 11 are formed by the diaphragms 11a and 11b. When the two or more diaphragms are moved relative to the mold 1 at the position of the inner edger 5, they are elastically deformed while sliding against the inner wall of the manifold 3. When the position of the inner edger 5 is fixed to the mold 1, the inner wall is in close contact with each other by the elastic restoring force.

In addition, the term "intimately adheres to the inner wall in a state of mutual cooperation by the elastic restoring force" means that the two or more sheets constituting the sealing member 11 are elastically restored in the same direction, and the result is as a result. In the case where the two or more sheets are in close contact with each other on the inner wall of the manifold, for example, it is preferable from the viewpoint of improving the sealing property. However, it also includes the case where the membranes are in close contact with each other in the inner wall of the manifold, or the liquid for coating or extrusion molding enters between the membranes, and is present in the manifold between the membranes. In the case of the film of the inner wall portion, the diaphragms cooperate with each other to be in close contact with the inner wall of the manifold, thereby improving the sealing property.

Further, according to the present invention, when the position of the inner edger 5 is changed with respect to the mold 1, the sealing member 11 of the sealing portion 8 is reinforced (more strictly, the diaphragms 11a, 11b constituting the sealing member 11). Although it is in contact with the inner wall of the manifold 3 of the mold 1, it is easy to elastically deform while sliding in the direction opposite to the mounting direction (insertion direction) Id of the inner edger 5, thereby reducing the internal edger 5, the insertion force of the mold 1 is fixed, and when the position of the inner edger 5 is fixed with respect to the mold 1, the sealing member 11 of the reinforcing sealing portion 8 is in close contact with the manifold by the elastic restoring force in cooperation with each other. 3 inner walls, the result can be sought The liquid-tight state of the position of the inner edger 5 with respect to the mold 1 is sufficiently ensured, and the adjustment of the coating width when the position of the inner edger 5 moves relative to the mold 1 is facilitated.

In the present invention, the reinforcing sealing portion 8 is not constituted by a single diaphragm but a sealing member 11 including two or more diaphragms 11a and 11b, and the film is moved when the position of the inner edger 5 moves relative to the mold 1. The sheets 11a and 11b are more easily collapsed and deformed to improve the slidability. Further, when the position of the inner edger 5 is fixed relative to the mold 1, the diaphragm 11a of the sealing member 11 with respect to the inner wall of the manifold 3 of the mold 1 is 11b is in close contact with each other in a state in which the diaphragms 11a, 11b are superposed on each other by the elastic restoring force in a state of mutual cooperation, whereby the total contact area of the diaphragms 11a, 11b and the single unit are included Since the sealing member of the diaphragm is increased in comparison, the liquid-tight state can be sufficiently ensured.

The diaphragms 11a, 11b constituting the sealing member 11 have an outer diameter rb larger than the manifold diameter rc, which is used to fix the diaphragms 11a, 11b when the position of the inner edger 5 is fixed relative to the mold 1. It is necessary to be in close contact with each other in the state in which the elastic restoring force is in close contact with each other in the inner wall of the manifold 3. Specifically, it is preferable that the outer diameter rb of the diaphragms 11a and 11b constituting the sealing member 11 is larger than the manifold. The diameter rc is only 0.01 to 1 mm. Here, the "manifold diameter" means a radius in the case where the cross-sectional shape of the manifold 3 is a true circular shape, and is a semicircular shape or a semi-elliptical shape as shown in FIG. When the elliptical shape or the like has a plurality of shapes of different diameters, it means that the position from the center of the diameter or the position corresponding to the center of the diameter is along the extending direction of the slit 4 (the radially outer side R of the mold 2 shown in Fig. 1). The radius of measurement (1/2 inch diameter).

When the outer diameter rb of the diaphragms 11a and 11b constituting the sealing member 11 is larger than the manifold diameter rc by 1 mm, the insertion force of the inner edger 5 when the position of the inner edger 5 moves relative to the mold 1 becomes high. Therefore, there is a tendency that the workability at the time of installation deteriorates, which is not preferable. Further, when the outer diameter rb of the diaphragms 11a and 11b is larger than the manifold diameter rc by 0.01 mm, there is a tendency that the liquid-tight state of the position of the inner edger 5 with respect to the mold 1 cannot be sufficiently ensured. Poor.

The diaphragms 11a and 11b constituting the sealing member 11 are required to have a characteristic that when the position of the inner edger 5 is changed with respect to the mold 1, it is easily collapsed and deformed, and when the position of the inner edger 5 is fixed with respect to the mold 1, Since the original shape is restored, an elastic material having an elastic modulus of 10,000 MPa or less, preferably 1,000 MPa or less is preferable, and a lubricative resin material is particularly preferable.

The lubricating resin material is not particularly limited, and the sealing member 11 is preferably excellent in chemical resistance and slidability. In this respect, a resin material having a static friction coefficient of preferably 0.2 or less is used as the lubricating resin material. For example, polytetrafluorethylene (PTFE) is preferred.

4 and 5, the sealing member 11 is composed of only two diaphragms 11a and 11b. However, the sealing member 11 may be composed of three or more diaphragms, and the inner edger may be used. The position of 5 is in a range in which the overlap state can be maintained with respect to the mold 1. For example, as shown in Fig. 6, the first spacer member 12 may be provided between the diaphragm 11a and the diaphragm 11b. The first spacer member 12 has The outer diameter smaller than the manifold diameter rc is preferably an outer diameter rs which is smaller than the manifold diameter rc by only 0.001 to 3 mm, and the first spacer member 12 can be appropriately disposed as needed.

In the case where the first spacer member 12 is disposed, if the outer diameter of the first spacer member 12 is rs and the outer diameter of the diaphragms 11a and 11b is rb, the thickness of the first spacer member 12 Ts preferably satisfies the relationship: ts<(rb-rs).

If you become ts In the relationship of (rb-rs), the distance between the diaphragms 11a and 11b is equal to or larger than the length dimension of the elastically deformed portion of the diaphragms 11a and 11b, so that the position of the inner edger 5 is relative to When the mold 1 is fixed, the diaphragms 11a and 11b are separated from each other, and there is a tendency that the states of mutual cooperation, particularly the superimposed state, are not achieved, which is not preferable.

Further, the thickness tb (tb1, tb2 in FIG. 6) of the diaphragms 11a and 11b is not particularly limited as long as the position of the inner edger moves relative to the mold, that is, the diaphragm 11a and 11b are slidably elastically deformed with respect to the inner wall of the manifold, and are fixed to the inner wall in a state of mutual cooperation by elastic restoring force when the position of the inner edger is fixed with respect to the mold. However, it is preferable that the thickness tb of the respective diaphragms 11a and 11b which slides while being elastically deformed with respect to the inner wall of the manifold when the position of the inner edger moves relative to the mold is, for example, tb. Within the range of 4 (rc-rs). When the relationship of tb>4 (rc-rs) is obtained, when the position of the internal edger moves relative to the mold, the inner wall of the manifold cannot be sufficiently elastically deformed, and the moving force during sliding becomes large. Therefore, there is a tendency that the internal edger cannot move inside the mold.

The preferable range of the thickness of the above-mentioned film sheets 11a and 11b varies depending on the material of the film sheets, but for example, in the case where the PTFE film sheets are used as the above-mentioned film sheets 11a and 11b, the thickness of each of the film sheets 11a and 11b is used. It is preferably a thickness of 0.05 to 0.4 mm.

Further, the reinforcing seal portion 8 has at least two sealing members 11, and has six sealing members 11 in Fig. 4, and further has a second interval between the sealing members 11 and 11 including an outer diameter ra which is smaller than the manifold diameter rc. The member 10 is preferably such that when the position of the inner edger 5 is moved, the space for elastically deforming the diaphragms 11a, 11b constituting the sealing member 11 can be secured, and the inner edge can be reduced. The contact area of the entire body 5 with respect to the inner wall of the manifold 3 of the mold can reduce the sliding resistance.

4 shows an example of the case where the six sealing members 11 and the five second spacing members 10 are interposed between the sealing members 11, but the number of the sealing members 11 and the second spacing members 10 may be Choose as appropriate.

The outer diameter ra of the second spacer member 10 is preferably only 0.001 to 3 mm smaller than the manifold diameter. When the outer diameter ra of the second manifold member 10 is smaller than the manifold diameter rc by more than 3 mm, when the inner edger 5 is attached to the mold 1, the inner wall of the second spacer member 10 and the manifold 3 of the mold 1 is Since a large space is generated between them, there is a tendency that the liquid-tight state when the position of the internal edger 5 is fixed cannot be sufficiently ensured. Further, when the outer diameter ra of the second spacer member 10 differs from the manifold diameter rc by less than 0.001 mm, the inside of the manifold 3 of the mold 1 is used for reinforcement when the position of the inner edger 5 is moved. The space in which the sealing member 11 of the sealing portion 8 is deformed toward the second spacing member 10 side is insufficient, and the moving force of the internal edger 5 when the position is moved (at the time of mounting) tends to increase.

The material of the first spacer member 12 and the second spacer member 10 is not particularly limited, and various resin materials such as polyethylene terephthalate (PET) or PTFE can be used.

Moreover, the internal edger 5 of the present invention is an internal edger for a mold, and the mold 1 having the internal edger 5 can achieve easy adjustment of the liquid-tight state and the coating width.

The above description is only an example of an embodiment of the present invention, and various modifications can be added within the scope of the patent application.

[Examples]

Next, a pair of internal trimmers for a mold according to the present invention are experimentally produced, and the surface of the moving web is continuously coated by using a coating device in which the internal edgers are attached to the mold shown in FIG. The performance evaluation is performed, so the following will be described.

In the embodiment, the inner edger 5 having the reinforced sealing portion shown in FIGS. 3 and 4 is used, the coating width is 250 mm, the manifold diameter rc of the mold 1 is 20 mm, and the width of the slit 4 is 300 μm. The thickness of the auxiliary portion 7 is 295 μm, and the reinforcing seal portion 8 is provided in the inner edger front end side region 9a in the region where the edge correcting portion 7 is disposed, and includes a sealing member 11 including a thickness of 200 μm. The two sheets 11a and 11b made of a PTFE resin material have a total of six, and the second spacer member 10 is interposed between the sealing members 11 and 11, and is made of PET resin having a thickness of 500 μm, and the total is 5 And the outer diameter ra of the second spacer member 10 is set to be smaller than the manifold diameter rc by only 100 μm, and the outer diameter rb of the two diaphragms 11a and 11b constituting the sealing member 11 is set to be larger than the manifold diameter rc. 100 μm.

(Comparative Example 1)

For comparison, a configuration is adopted in which the outer peripheral portion of the body portion of the edger main body corresponding to the position of the base portion of the edger auxiliary portion is provided with the inner wall of the manifold with respect to the mold. The ring-shaped gasket (outer diameter: 0.5 mm larger than the manifold diameter) which is the outer diameter of the liquid-tight state, and the internal edger which is the same as the coating device described in Patent Document 1 (Comparative Example 1), and the same performance evaluation as in the examples was carried out.

(Comparative Example 2)

The same configuration as that of the embodiment was carried out except that a single diaphragm made of a PTFE resin material having a thickness of 0.5 mm was used to constitute the sealing member.

(Comparative Example 3)

The same configuration as in the embodiment was carried out except that a single diaphragm made of a PTFE resin material having a thickness of 0.2 mm was used to constitute the sealing member.

(Performance evaluation)

(1) Determination of the moving force when the internal edger moves relative to the position of the mold

Using the internal edger insertion device 13 shown in Fig. 1, the internal edger 5 is inserted into the mold 1 to be mounted to the positioner auxiliary portion 7 at a position that is completely invisible in the slit 4, and then removed. A screw press-fitting portion constituting the internal edger insertion device 13 is attached to a shaft 14 coupled to the edger body portion 6 of the internal edger 5 exposed outside the mold 1 (a maximum scale of 50 N) to The pull gauge measures the moving force (N) when the inner edger 5 is pulled out to the outside of the mold 1.

(2) Evaluation of the position of the internal edger relative to the presence or absence of liquid leakage when the mold is fixed

After the inner edger 5 is mounted at a specific position in the mold 1, the inner edger 5 is reciprocated 10 times in the mold 1 at a distance of 60 mm, and then the oil (viscosity is 0.5 Pas) is pumped into the mold 1 The inside of the mold reached a pressure of 300 kPa, and the pressure state was maintained for 1 hour. At this time, it was evaluated by visual observation whether or not liquid leakage occurred between the internal edger disposed at both end portions of the mold and the manifold.

According to the evaluation results shown in Table 1, in Comparative Examples 1 and 2, when the inner edger 5 was attached to the mold 1, the internal edger movement force was excessively large and it was difficult to move. In Comparative Example 3, the internal edger moving force when the internal edger 5 was attached to the mold 1 was small, but liquid leakage was observed after coating. On the other hand, in the embodiment, the moving force of the internal edger when the internal edger was attached to the mold was small, and liquid leakage after coating was not observed.

[Possibility of industrial use]

According to the present invention, there is provided an inner edger for a mold and a mold having the inner edger, wherein the inner edger includes a reinforced seal portion having a specific configuration at a body portion of the inner edger It is possible to fully ensure the ease of adjustment of the liquid-tight state and the coating width.

5‧‧‧Internal edger

6‧‧‧Edger body part

7‧‧‧Edger Auxiliary Department

8‧‧‧Enhanced seal

9‧‧‧A region of the edger body portion 6 in which the edger auxiliary portion 7 is disposed

9a‧‧‧The front end area in the area 9 of the internal edger 5

Id‧‧‧Installation direction

X‧‧‧ area

Claims (12)

An internal edging device for a mold, which is disposed at both ends of a mold, the mold is formed by a mold formed by combining a pair of divided mold members, and the mold includes: a manifold extending in a length direction of the mold And a slit extending from the manifold to a radially outer side of the mold; and the mold inner edger includes: a shaft-shaped edger body portion having a surface shape corresponding to the manifold; And a sheet-shaped or film-shaped edger auxiliary portion extending from the edger body portion and having an outer surface shape corresponding to the slit; and the mold inner edger is characterized in that: the fixed edge At least a portion of the region of the body portion where the edging device auxiliary portion is disposed has a reinforced sealing portion that reinforces the liquid tightness of the liquid material for coating or extrusion molding filled in the manifold Sealing, and the reinforcing sealing portion has at least one sealing member, wherein the sealing member comprises two or more membranes, and the two or more membranes are moved relative to the mold when the position of the inner edger is moved relative to the mold tube Collapsing deformation in the form of an inner wall side of the elastic deformation of the sliding side, and the inside edge is of a predetermined position with respect to the die fixed, by the elastic restoring force and cooperating at the state close contact with the inner wall. The inner edge of the mold of claim 1 wherein the diaphragm constituting the sealing member has a larger outer diameter than the manifold diameter (rc). The mold of claim 1 or 2, wherein the outer diameter (rb) of the diaphragm constituting the sealing member is larger than the manifold diameter (rc) by only 0.01 to 1 mm. An internal edger for a mold according to claim 1, wherein each of the sealing members is attached to the diaphragm Further, the first spacer member has an outer diameter (rs) smaller than the manifold diameter (rc). The inner edge of the mold of claim 4, wherein the outer diameter (rs) of the first spacer member is smaller than the manifold diameter (rc) by only 0.001 to 3 mm. The inner edge of the mold for claim 4, wherein the outer diameter of the first spacer member is rs and the outer diameter of the diaphragm is rb, the thickness ts of the first spacer member satisfies the following relationship Formula: ts<(rb-rs). The mold inner edger according to claim 1, wherein the reinforcing seal portion includes at least two sealing members, and further includes a second spacing member between the sealing members, the second spacing member having a more manifold diameter (rc) Small outer diameter (ra). The inner edge of the mold according to claim 7, wherein the outer diameter (ra) of the second spacer member is smaller than the manifold diameter by only 0.001 to 3 mm. An inner edge splicer for a mold according to claim 1, wherein the reinforced seal portion is disposed in a front end side region of the inner edger in a region where the edging device auxiliary portion is disposed. The internal edger for a mold according to claim 1, wherein the number of sheets constituting each sealing member is two. An inner edger for a mold according to claim 1, wherein the diaphragm comprises a lubricating resin material. A mold comprising the internal edger for a mold according to any one of claims 1 to 11.