JPH09174655A - Bead material molding die - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mold integrally a bead material as an interposing material to a sheet glass by forming a molding die as a structure easily inviting the lowering of temperature of a heat softened or molten synthetic resin material. SOLUTION: A die main body section 21 is provided with an extrusion outlet 25 consisting of a first extrusion opening 26 opened to a face to be molded of a sheet glass and a second extrusion opening 27 of open shape forming the sectional shape of a bead material and a shaping flow path 33 for feeding a synthetic resin material to the extrusion outlet 25 while shaping the same, and the shaping flow path 33 is formed with an inclination to the first extrusion opening 26 starting from its start end opening 33a toward the extrusion outlet 25 to control the lowering of temperature of the synthetic resin material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bead material forming die, and more particularly, to a synthetic resin material which has been softened or melted by heating and extruded on a surface to be molded of a sheet glass material while suppressing a temperature decrease. The present invention relates to a bead material forming die capable of efficiently forming a high-quality bead material.

[0002]

2. Description of the Related Art Double-layer glass is widely used in many buildings including cold regions because of its excellent soundproofing and heat insulating properties.

Since the double glazing having excellent functional properties as described above must be securely fixed to the frame material while maintaining watertightness, an interposing material such as a glazing channel material is interposed. Have been installed. in this case,
Although the work of mounting the interposing material on the double-glazed glass can be performed manually at the construction site, it requires skill and is complicated. Therefore, an example has been proposed in which an automatic forming device is installed on the side of a factory that manufactures double glazing, and an interposing material is integrated in advance with the double glazing using this device before shipment.

By the way, as a conventional method for automatically molding the interposition material with respect to the peripheral edge portion of the double glazing by using an extrusion molding apparatus, for example, "with a frame body" is disclosed in Japanese Patent Laid-Open No. 6-321585. There is a method of manufacturing double glazing. "

FIG. 5 is an explanatory view showing a process of automatically mounting the interposer material 7 described as a frame on the double-glazing unit 1 by using the above-mentioned conventional method, and FIG. It is explanatory drawing which partially expands and shows the shaping | molding die 5 used when extruding the said intervention material 7 to the peripheral part of the double glazing 1 in a process.

According to these figures, the double glazing 1 conveyed by the belt conveyor 8 under the condition that both side edges 1a, 1a located on the left and right in the traveling direction are projected, the adhesive coating is first performed. After the thermosetting adhesives 3a, 3a are applied over the entire length of the both side edge portions 1a, 1a in the part 3, in order to increase the reactivity of the thermosetting adhesive 3a in the heating part 4 in the next step. The whole is heated. The double glazing 1 after heating is
Molding groove portion 5 of a pair of molding dies 5 and 5 arranged to face each other on both left and right sides in the traveling direction of the belt conveyor 2.
The both side edge portions 1a, 1a are individually introduced into the a, 5a.

At this time, both side edges 1a, 1 of the double glazing 1
For a, the thermoplastic resin material is extruded and supplied from the side of the molding dies 5, 5 into the gap formed between the molding grooves 5a, 5a and the double glazing 1, and is already applied. As a result of chemically reacting with the above-mentioned thermosetting adhesive 3a under high temperature and high pressure conditions and being integrally fixed to the side of the double glazing 1, the interposer 7 is formed after cooling.

After the interposing material 7 is formed over the entire length of the both side edges 1a, 1a of the double glazing 1 in this manner, the remaining side edges 1b, 1 of the double glazing 1 are similarly formed.
The intervening material 7 is formed on b.

The remaining side edges 1b, 1b of the double glazing 1
When the interposer 7 is formed on the interposer 7, the interposer 7 located at the corner 1c of the double glazing 1 is cut and removed using the cutting device 6 as a pretreatment.

After the cutting / removing treatment as described above, the positional relationship of the double glazing 1 is rotated by 90 degrees, and the process shown in FIG.
The interposer 7 is formed on b and 1b as shown in FIG.

[0011]

By the way, according to the above-mentioned conventional technique, the interposition material 7 can be integrally molded over the entire circumference of the peripheral edge portion of the double glazing 1.

However, in the case of the above method, the thermoplastic resin material is always extruded under the condition of facing the peripheral edge portion of the double glazing 1, that is, the three surfaces of the front and back surfaces 2a and 2b and the end surface 2c. For this reason, the heat transfer to the side of the double glazing 1 during the molding step of the interposer 7 causes a temperature drop due to this, which in turn causes the thermoplastic resin to be introduced into the molding die 5. The temperature of the material will also gradually decrease.

The thermoplastic resin material gradually increases in viscosity in proportion to the degree of temperature decrease due to the above factors, which makes it difficult to smoothly extrude, and the thermosetting applied to the peripheral portion of the double glazing 1. The reactivity with the flexible adhesive 3a is also reduced, and integration becomes difficult.

As a result, the interposing material 7 obtained after the molding cannot be maintained in a predetermined shape and is deformed, or the bonding state between the double glazing 1 and the interposing material 7 becomes incomplete, resulting in voids. However, there is a problem in that the watertightness is deteriorated, and water such as rainwater is allowed to enter the side of the frame member made of a sash or the like.

The heating step using the heating section 4 in the step shown in FIG. 5 is essential to eliminate the above-mentioned inconvenience by reducing the temperature difference between the double glazing 1 and the molding die 5. Therefore, the number of steps is increased, the manufacturing cost is increased, and the workability is deteriorated.

Further, in the above-mentioned conventional method, it is necessary to cut the interposing material 7 in the portion located in the corner portion 1c, and a sealing process is performed in which the cut surfaces after cutting are butted against each other and heat-sealed. However, it did not reach a perfect seal,
A gap is formed between the butt end surfaces 7a, 7b, and a water solution such as rainwater is allowed to enter the interposing material 7 having a substantially U-shaped cross section and covered by the peripheral edge of the double glazing 1. There is an inconvenience that it adversely affects the sealing material and the like filled in the end surface of the double glazing 1, resulting in deterioration of the performance of the double glazing 1 itself.

The present invention has been made in view of the above problems found in the prior art, and an object thereof is to provide a structure which is unlikely to cause a temperature decrease of a synthetic resin material obtained by heating and softening or melting a molding die. It is an object of the present invention to provide a bead material forming die capable of integrally forming a bead material as an interposing material with a plate glass material.

[0018]

The present invention is intended to achieve the above object. Among them, the structural feature of the invention according to claim 1 is that the tip of an extruder for supplying a synthetic resin material is provided. And a plate glass introducing portion for receiving a plate glass material, and a peripheral side edge portion of the plate glass material which is continuously provided in the plate glass introducing portion and which is made by heating and softening or melting the synthetic resin material supplied from the extruder. Of a bead material forming die having a shape of a bead material that is integrated with at least one of the front and back surfaces of the die body molding die, wherein the die body portion is integrally formed with a bead material of a plate glass material. A first extrusion opening facing the molded surface to be formed and a second opening having an opening shape that substantially matches the cross-sectional shape of the bead material.
It has at least an extrusion outlet consisting of an extrusion outlet and a shaping flow channel for supplying a synthetic resin material to the extrusion outlet, and the cross section of the shaping flow channel is roughly the cross-sectional shape of a bead material. In addition, the first extruding port is inclined from the starting end opening side thereof toward the extruding port.

Further, the constitutional feature of the invention of claim 2 is that, of the plate glass introducing part and the die body part which constitute the bead material forming die, the plate glass introducing part introduces a plate glass material. And a first flow path for delivering the synthetic resin material supplied from the extruder to the die main body portion, and the die main body portion introduces the plate glass material that has passed through the guide groove portion. Of the molding groove having the opening shape substantially corresponding to the cross-sectional shape of the bead material and the first extrusion opening that opens facing the molding surface where the bead material of the plate glass material is integrated. It has at least an extrusion outlet including a second extrusion opening that opens to the outlet side, and a second flow path that communicates with the first flow path and sends the synthetic resin material to the extrusion exit.

In this case, the second flow path is divided into one side branch flow path and the other side branch flow path so that the bead material is integrated on both front and back surfaces of the plate glass material. It is preferable that the synthetic resin material is extruded onto the molding surface from the continuous extrusion outlet. Further, the second flow path is a groove-shaped flow path portion provided on a boundary surface with the plate glass material introducing portion, and a shaping flow path extending from an end portion of the groove-shaped flow path portion to an extrusion outlet. It is preferable that the shaping flow path has a cross-sectional shape of a substantially bead material, and is provided so as to be inclined with respect to the first extrusion port from the start end opening side thereof toward the extrusion outlet. . Further, it is preferable that the groove-shaped flow path portion is formed such that the depth of the groove bottom of the terminal portion is shallower than the depth of the groove bottom of the other portion.

[0021]

1 and 2 are explanatory views embodying and exemplifying an embodiment of the present invention, in which an extruder 51 for supplying a synthetic resin material through a supply path 51a has its tip. The bead material forming die 11 included in the plate glass introduction portion 12 provided on the side of the extruder 51 for receiving the plate glass material 41, and the boundary surface 21 of the plate glass introduction portion 12 on the plate glass introduction portion 12.
It is provided such that it is in contact with a and is continuously connected, for example, by a screw member 37 so that it can be separated from and contacted with the screw member 37. At least one of the front and back sides 42a, 42b, in the illustrated example, the front and back sides 42a, 42b
And a die body 21 shaped into the shape of the bead material 35 as shown in FIG. 3, for example, which is integrated with the surface 43 to be molded.

In FIGS. 1 and 2, the extruder 5 is used.
The first flow path 14 for sending out the synthetic resin material supplied from the No. 1 to the die body portion 21 is provided on the side of the plate glass introducing portion 12 with the first
It is shown that the second flow paths 28 that communicate with the flow paths 14 and send the synthetic resin material to the molding surface 43 are formed on the die body 21 side, respectively. The flow path of the synthetic resin material supplied from the side to the molding surface 43 may follow a path other than the illustrated example.

The die body 21 constituting the bead material forming die 11 has a surface 43 to be molded on which the bead material 35 of the plate glass material 41 is integrated as shown in FIG.
And a second extrusion opening 27 having an opening shape substantially matching the cross-sectional shape of the bead material, and a synthetic resin material is supplied to the extrusion exit 25. And a shaping flow channel 33.

FIG. 4 is a schematic cross-sectional view showing an example of the die main body 21 of the present invention. In the shaping flow channel 33, the starting end opening 33a has the same opening shape as the extrusion outlet 25,
That is, the cross section is formed so as to have a cross sectional shape of the bead material 35 as shown in FIG. 3, for example. In addition, the shaping flow path 33 is formed from the starting end opening 33a side to the extrusion outlet 25
Toward the glass surface (surface 43 to be molded). In this way, the shaping flow path 33 can be separated from the shaping groove portion 22 provided in the die body portion 21 as much as possible to prevent the plate glass material 41 from taking heat.

The extruding outlet 25 is a first extruding outlet 26 which is opened so as to face the surface to be molded 43 integrally with the bead material 35 on the side of the base portion 35a so as to be integrally molded.
By opening the plate glass material 41 in the delivery direction, the base part 35a and the cushion part 35b that bulges with respect to the base part 35a are brought into non-contact with the surface 43 to be molded. A second extrusion port 27, which can be freely molded, is formed on the lead-out side of the molding groove 22. That is, the second extrusion port 27 has the bead material 35.
Has a shape that substantially matches the cross-sectional shape of. Strictly speaking, the second extrusion port 27 defines the cross-sectional shape of the bead material 35 together with the plate glass material 41.

Further, as shown in the illustrated example, the die body 21 is capable of extruding the bead material 35 onto the respective molding surfaces 43 which are set on the front and back surfaces 42a and 42b of the plate glass material 41. When the second flow path 28 is provided, for example, the second flow path 28 is divided into one side branch flow path 29 and the other side branch flow path 3
Therefore, the branch channels 29 and 30 are respectively connected to the corresponding extrusion outlets 25.

In this example, the second flow path 28 provided in the die body 21 is provided with a groove-like flow path portion 31 engraved on the boundary surface 21a side with the plate glass material introducing portion 12 and the groove-like flow. It is formed by a shaping flow passage 33 extending from the terminal end 32 of the passage 31 to the extrusion outlet 25.

Further, as shown in FIG. 4, the groove-shaped flow path portion 31 is formed by making the depth of the groove bottom 32a of the terminal end portion 32 shallower than the depth of the groove bottom 31a of other portions, By making the volume of the space portion, which is secured when the sheet glass material introduction portion 12 is in close contact with the contact surface 21a, smaller than other portions, the shaping flow path 3 through the starting end opening portion 33a.
It is preferable to reduce convection in the flow path 33 of the synthetic resin material that is heated and softened or melted into the inside of the channel 3.

On the other hand, in order to introduce the plate glass material 41 through the peripheral side edge portion 42 into the plate glass introducing portion 12 which constitutes the bead material forming die 11 and has a function of receiving the plate glass material 41. Guide groove 13 is provided, and if necessary, the first flow path 14 for sending the synthetic resin material pressure-fed from the extruder 51 side to the die body 21 side via the supply passage 51a is provided. It is provided.
The guiding groove 13 is formed by tapering the groove width on the starting end side to a certain extent larger than the plate thickness of the plate glass material 41 so that the guide groove portion 13 is expanded to form the plate glass material 41. It is desirable to be able to introduce smoothly.

It should be noted that the plate glass introducing portion 12 has the first
When the flow path 14 is provided, the die body 2
In FIG. 1, the plate glass material 41 that has passed through the guiding groove portion 13 is introduced and the molding groove portion 22 for feeding the surface 43 to be molded to the extrusion outlet 25 side is communicated with the first flow path 14. Second for delivering the synthetic resin material to the extrusion outlet 25
At least the flow path 28 is provided.

When the die body 21 is provided with the second flow path 28 as described in claim 2, the bead material 35 is integrated with each of the front and back surfaces 42a and 42b of the plate glass material 41. As possible, the one side branch flow channel 29 and the other side branch flow channel 30 are branched, and the synthetic resin material is continuously supplied to the respective branch flow channels 29 and 30 from the extrusion outlet 25 on each of the molding surfaces 43. It is preferably configured to extrude.

Further, the second flow passage 28 has a groove-shaped flow passage portion 31 provided on the boundary surface 21a with the plate glass material introducing portion 12, and an extrusion outlet from a terminal end portion 32 of the groove-shaped flow passage portion 31. 25, and the cross section of the shaping flow path 33 has a cross-sectional shape of a substantially bead material 35, and is formed from the starting end opening 33a side toward the extrusion outlet 25. It is desirable to provide the one extrusion port 26 with an inclination.

Furthermore, in the groove-shaped flow path portion 31, the depth of the groove bottom 32a of the terminal end portion 32 is set to the depth of the groove bottom 31a of another portion.
It is preferable to form it shallower than the depth of.

The plate glass material 41 on which the bead material 35 is molded on the surface 43 to be molded by using the bead material molding die 11 is not shown in the drawing but is preferably made of double glazing or glass. Therefore, even a single plate structure can be used. Further, it can be applied to a transparent synthetic resin plate called so-called organic glass.
Further, as the plate glass material 41, as shown in FIG. 1, it is preferable to use a material in which an adhesive layer 44 is formed by applying a thermosetting adhesive such as a urethane resin material on the surface 43 to be molded in advance. be able to.

Further, as the synthetic resin material for molding the bead material 21, in addition to the thermoplastic resin material, a thermosetting resin material or a moisture curable resin material can be used, and if workability is taken into consideration. For example, a thermoplastic resin material, particularly a polyvinyl chloride resin material can be preferably used.

Since the present invention is constructed in this way, the heat-softened or melted synthetic resin material that is pressure-fed from the extruder 51 side is supplied to the supply path 5 as shown in FIG.
The first flow path 14 of the plate glass material introducing part 12 through the la 1
To the second flow path 2 provided to the die main body 15
After 8 times, it is delivered to the extrusion outlet 25.

At this time, the molding surface 43 of the plate glass material 41 is introduced into the molding groove 22 of the die body 21 in a positional relationship of facing the first extrusion port 26 at the extrusion outlet 25. Therefore, the bead material 35 molded according to the cross-sectional shape defined by the second extrusion port 27 is integrally formed on the molding surface 43 via the adhesive layer 44, for example.

Further, the die main body portion 21 is provided with, for example, the second flow path 28, and the one side branch flow path 29 and the other side branch flow path 3 are provided.
0 and each of the above-mentioned extrusion outlets 25
In the case where the bead material 35 is continuously extruded, the bead material 35 is extruded at the same time on the respective molding surfaces 43 of the front and back surfaces 42a, 42b of the plate glass material 41 introduced into the molding groove 22. Become. In the above example, the one-side branch channel 29 and the other-side branch channel 30 are branched, but the synthetic resin material may be separately fed in advance from the two channels formed by the two extruders in advance. When molding a pair of symmetric bead materials as in the above example, it is necessary to match the flow of the synthetic resin material in the two flow paths, so the shunt method branched in the middle is more controllable. It is simple and preferable.

On the other hand, the shaping flow path 3 of the die main body 21.
When 3 is arranged from the starting end opening 33a side toward the extrusion outlet 25 with an inclination with respect to the molding surface 43, the inclination from the molding groove 22 to the shaping flow path 33. Since it is possible to separate them, it is possible to more reliably prevent the flowing down synthetic resin material from being deprived of heat by the plate glass material 41, and to effectively suppress the temperature decrease.
Therefore, the adhesive force between the synthetic resin material extruded from the extrusion outlet 25 of the die body 21 and the plate glass material 41 can be improved.

Further, the terminal end portion 32 of the groove-shaped flow path portion 31.
When the groove bottom 32a is formed to have a depth smaller than the depth of the groove bottom 31a of the other portion, when the plate glass material introducing portion 12 is closely contacted via the boundary surface 21a. To reduce the convection in the flow passage 33 of the synthetic resin material fed into the shaping flow passage 33 through the starting end opening portion 33a by making the volume of the space portion smaller than that of other portions. You can

Further, according to the present invention, unlike the conventional method shown in FIG. 6, both front and back surfaces 42a, 42 of the plate glass material 41 are used.
The bead material 21 is provided on at least one surface of b.
Since the plate glass material 41 held by a jig device (not shown) and the bead material forming die 11 are simply moved relative to each other in one step, the end portion is superposed on the start end portion. Thus, the bead material 21 having a high watertightness can be continuously integrally formed over the entire circumference thereof.

[0042]

As described above, according to the present invention, the die main body portion has an extrusion outlet including a first extrusion port and a second extrusion port having an opening shape that substantially matches the cross-sectional shape of the bead material.
At least a shaping flow channel that supplies a synthetic resin material to the extrusion outlet, and the shaping flow channel is inclined from the starting end opening side toward the extrusion outlet with respect to the first extrusion port. Since it is provided, by separating the shaping flow path from the plate glass material side, the synthetic resin material flowing down in the flow path is surely prevented from being deprived of heat by the plate glass material, and the extrusion outlet. It is possible to integrally mold the bead material while improving the adhesive force between the synthetic resin material extruded from and the plate glass material.

In addition, the die main body is provided with, for example, a branched one side channel and another branched channel, and two separately prepared channels, each of which is continuous with each of the extrusion outlets. In this case, the bead material can be simultaneously extruded on both the front and back surfaces of the plate glass material.

On the other hand, the die main body part is provided with, for example, a second flow path, and the second flow path is a groove-shaped flow path part, and a shaping flow from the end of the groove-shaped flow path part to the extrusion outlet. Formed with the road,
Moreover, in the case where the shaping flow path is arranged with an inclination from the starting end opening side toward the extrusion outlet, the shaping flow path and the molding groove part of the die body part Since it is possible to effectively suppress the temperature decrease of the synthetic resin material that flows down the second flow path by separating the gaps, it is possible to improve the adhesive force between the extruded synthetic resin material and the plate glass material.

Further, when the groove bottom at the terminal end of the grooved flow channel is formed to be shallower than the groove bottoms at other portions, it is adhered to the plate glass material introducing portion side. It is possible to reduce the volume of the space that is secured at the time of making the volume smaller than that of the other parts, and reduce the convection in the flow path of the synthetic resin material fed into the flow path for shaping.

Furthermore, according to the present invention, since the bead material can be formed on at least one of the front and back surfaces of the plate glass material, the plate glass material and the bead material forming die are simply moved relative to each other in one step. By so doing, the bead material having a high watertightness can be continuously formed over the entire circumference by overlapping the terminal end portion with the starting end portion.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating an embodiment of the present invention.

FIG. 2 is an explanatory view showing the bead material forming die shown in FIG. 1 separately in a plate glass introducing portion and a die body portion.

FIG. 3 is an explanatory diagram showing a positional relationship between a bead member and a plate glass member during extrusion molding.

FIG. 4 is an explanatory view showing a relationship between a groove-shaped flow path portion and a shaping flow path, which constitutes a second flow path in the die body.

FIG. 5 is an explanatory view illustrating a schematic process for automatically molding an interposer material to the peripheral edge portion of the double-glazing unit by a conventional method.

FIG. 6 is an explanatory view showing, in a partially enlarged manner, a molding die used when extrusion-molding an interposer in the conventional method shown in FIG.

[Explanation of symbols]

 11 Bead Material Forming Die 12 Sheet Glass Material Introducing Section 13 Guide Groove 14 First Channel 21 Die Main Body 21a Boundary 22 Molding Channel 25 Extrusion Exit 26 First Extrusion 27 Second Extrusion 28 Second Channel 29 One-side branch channel 30 Other-side branch channel 31 Groove-shaped channel section 31a Groove bottom 32 End section 32a Groove bottom 33 Forming channel 33a Starting end opening 35 Bead material 35a Base section 35b Cushion section 37 Screw material 41 Sheet glass material 42 peripheral side edge 42a front surface 42b back surface 43 molded surface 44 adhesive layer 51 extruder 51a supply path

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical indication location B29K 709: 08 (72) Inventor Masaki Tsujino 1150 Hazawa-machi, Kanagawa-ku, Yokohama, Kanagawa Asahi Glass Co., Ltd. In the laboratory (72) Inventor Noriyuki Yoshihara 1150 Hazawa-machi, Kanagawa-ku, Yokohama-shi, Kanagawa Asahi Glass Co., Ltd. Central Research Laboratory

Claims (5)

[Claims] 1. A sheet glass introduction section which is provided at the tip of an extruder for supplying a synthetic resin material and receives a sheet glass material, and a sheet glass introduction section which is continuously provided at the sheet glass introduction section, and is supplied from the extruder. A bead material forming die having at least a die body for shaping a synthetic resin material, which has been softened or melted by heating, into a shape of a bead material which is integrated with at least one of the front and back surfaces of the peripheral side edge portion of a plate glass material. The die main body portion has a first extrusion opening that opens toward the surface to be molded into which the bead material of the plate glass material is integrated, and a second pressing member that has an opening shape that substantially matches the cross-sectional shape of the bead material. It has at least an extrusion outlet consisting of an outlet and a shaping flow channel for supplying a synthetic resin material to the extrusion outlet, and the cross section of the shaping flow channel has a cross-sectional shape of a substantially bead material. , And its opening side Bead material molding die, characterized by comprising grant inclined with respect to the first extrusion port toward et extrusion outlet. 2. A sheet glass introduction section which is provided at the tip of an extruder for supplying a synthetic resin material and receives a sheet glass material, and a sheet glass introduction section which is continuously provided at the sheet glass introduction section, and is supplied from the extruder. A bead material forming die having at least a die body for shaping a synthetic resin material, which has been softened or melted by heating, into a shape of a bead material which is integrated with at least one of the front and back surfaces of the peripheral side edge portion of a plate glass material. In the above, the plate glass introducing part has at least a guiding groove part for introducing a plate glass material, and a first flow path for delivering the synthetic resin material supplied from the extruder to the die body part, The die body includes a molding groove for introducing the plate glass material that has passed through the guiding groove, a first extrusion opening that opens to face the surface to be molded into which the bead material of the plate glass material is integrated, and the cross-sectional shape of the bead material. Almost one An extrusion outlet and a second extrusion port which opens to the discharge side of the groove for the forming has an opening shape which,
A bead material forming die, comprising at least a second flow path communicating with the first flow path and delivering a synthetic resin material to the extrusion outlet. 3. The second flow path is branched into one side branch flow path and the other side branch flow path so as to integrate the bead material on both front and back surfaces of the plate glass material, and each branch flow path is continuous with each of the branch flow paths. The bead material molding die according to claim 2, wherein the bead material molding die is configured to extrude a synthetic resin material from the extrusion outlet onto the molding surface. 4. The groove-shaped channel portion provided at the boundary surface with the sheet glass material introducing portion, and the shaping flow from the terminal end of the groove-shaped channel portion to the extrusion outlet. And a cross section of the shaping flow path has a cross-sectional shape of a substantially bead material, and an inclination is given to the first extrusion port from the start end opening side thereof toward the extrusion outlet. The bead material forming die according to claim 2 or 3, wherein 5. The bead material molding according to claim 4, wherein the groove-like flow path portion is formed by making the depth of the groove bottom of the terminal end portion shallower than the depth of the groove bottom of other portions. For dies.