JPH11115038A - Laminated molding, its molding machine, and molding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the molding of a laminated molding whose laminate joint face adheres strongly by providing an uneven face which is formed by molding and bonded on the interface of the joint layers of laminates which are mutually of a different color or a different material. SOLUTION: Two injection parts 1 are arranged in parallel in a molding machine. The first injection part 1a is of such a construction that an elastic plastic molding material X which is loaded into a hopper is melted and injected. The second injection part 1b is likewise of such a construction that a rubber molding material Y such as an acrylic rubber which is loaded into the hopper is melted and injected. Further, the injection parts 1a, 1b are equipped with a first and a second screw cylinder 4a, 4b respectively, in which a first and a second injection screw 2a, 2b are mounted respectively. In addition, the outflow opening 14a side for a joint-forming face 14 is of such a structure that the upper and lower faces of the opening 14a are tapered as a constricted part 19 whose gap size becomes gradually smaller to constrict a parison E.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated product of different materials, a molding machine therefor and a molding method therefor.
In particular, the present invention relates to a laminated molded article having improved adhesion between joining surfaces of a layered body, a molding machine for the laminated molded article, and a molding method thereof.

[0002]

2. Description of the Related Art As a prior art relating to the present invention, there is a molding machine shown in FIG. FIGS. 23 to 26 are side sectional views showing a molding step of the molding machine.

Referring now to FIGS. 23 to 26,
The molding machine and the molding method will be described.

FIG. 23 is a side view of a molding machine showing a preliminary molding step for molding a molding material of two colors and two materials. In FIG. 23, a rotary table 61 rotatable about a rotation shaft 60 is provided. Two molding dies 50 are arranged on the rotary table 61. The right first molding die 50a disposed on the rotary table 61 is a cross-sectional view showing a primary molding for molding one of two materials. In addition, the left second molding die 50
b is a cross-sectional view showing a secondary molding for molding the other of the two materials.

[0005] In a first molding die 50a, a lower die 51 is fixed to a rotary table 61. The first upper mold 52a is configured to move relative to the lower mold 51 by a hydraulic cylinder (not shown) to open and close the mold. When the lower mold 51 and the first upper mold 52a are clamped, a first molding cavity 53a for primary molding is formed inside.

A primary injection cylinder 55 is configured to move and join the inlet 54 of the first mold 50a. Then, when the first molding die 50a is clamped to form the first molding cavity 53a, the molding material is injected into the first molding cavity 53a to perform primary molding to form a primary molded product A '. . FIG. 23 shows a cross section of the state of the primary molding.

FIG. 24 shows that, at the stage when the primary molding is completed, the first upper mold 52a rises and the mold is opened, and the tongue table 61 rotates by 180 ° to move the lower mold 51 to the second molding mold. Move to the position of 50b. In FIG. 24, the lower mold 51 of the first molding die 50a and the lower mold 51 of the second molding die 50b are formed in the same shape.

Further, the second upper mold 5 of the second mold 50b is provided.
The molding surface 52b1 in 2b is formed so as to form a second molding cavity 53b capable of secondary molding.

Then, the primary molded product A 'molded by the first molding die 50a is put together with the lower die 51 into the second molding die 50a.
b to form a second upper mold 52b.

FIG. 25 shows each upper mold 52 from the state shown in FIG.
a, 52b are clamped to the lower dies 51, 51, and the secondary injection cylinder 56 is connected to the inlet 54 of the second molding die 50b,
From the secondary injection cylinder 56 to the second molding cavity 53b
A secondary molding is performed by injecting a molding material of a material different from that of the primary molded product A '. Then, a dissimilar material laminated molded product B 'is molded.

At this time, in the first molding die 50a, the molding material is simultaneously injected from the primary injection cylinder 55 to perform the primary molding, thereby molding the primary molded product A '.
FIG. 26 is a state diagram in which the secondary molding B 'is released from the second molding die 50b after the molding is completed and is taken out. This step is a molding step of the secondary molded article B ', and is mass-produced by repeating this step.

[0012]

When a laminated product of a different color or a different material is molded as described above, there is a time difference between the primary molding A 'and the secondary molding B' between the laminations. Therefore, for example, even if the same material is used, the mutual strength of the materials weakens, and the bonding between the two layers may be incomplete and may be separated later.

Further, in the case of dissimilar materials, the above-mentioned insufficient bonding causes the phase welding to deteriorate, so that the bonding force further decreases,
Peeling will occur during use of the molded article. In addition, since this molding method is a method of attaching the primary molded product A 'to the lower mold 51 and moving it to the second molding die 50b for secondary molding, it is not possible to mold a multilayer structure having two or more layers. , Bonding strength and construction of the molding machine.

Further, as in this conventional example, the primary molded product A '
The method of joining the secondary molded article B 'to the molding method is such that a molded article having a structure such as a simple lamination can be molded from the structure of the molding die, but it is difficult to mold a molded article having a complicated structure. Become.

Further, as a recycle of the burr material generated at the time of molding, a molded product having improved economic effect is obtained by combining a layer made of a recycled material using the burr material and a layer made of a virgin material having a function. However, there is a problem that the adhesiveness with a virgin material as a recycled material is not good.

The present invention has been made in view of the above-mentioned problems, and a technical problem of the present invention is to form a laminated molded product to which a bonding surface of a layer body is strongly bonded. Another object of the present invention is to make it possible to mold a laminated molded product having a complicated structure. Another object of the present invention is to provide a molding machine for a laminated molded product which prevents peeling between the laminated layers, has a strong adhesive force, is made of a different material, and is inexpensively molded even with a complicated molded structure. Another object is to obtain an inexpensive molding machine having a simple structure. Another object of the present invention is to provide a molding method for molding a laminated molded product using the molding machine. Another object of the present invention is to provide a molding method in which a laminated molded article having a complicated shape is strongly bonded and integrated without causing a defect.

[0017]

Means for Solving the Problems The present invention has been made to solve the above-mentioned problems, and the technical means thereof are configured as follows.

The present invention according to claim 1 is a laminated molded article having an uneven surface (G) formed by molding at the interface (F) of a bonding layer of a layered body (D) of a different color or material and bonded thereto.

Further, according to the present invention, the intermediate layer (B) of the layer (D) has a higher adhesive strength than the layers (A, C) adjacent to the intermediate layer (B). The laminated molded product according to claim 1, which is made of a strong material.

According to a third aspect of the present invention, the boot has a shape, and one layer (A) of the layered body (D) of the different material is made of rubber and the other layered body (B) is made of rubber. The multilayer molded product according to claim 1, wherein the multilayer molded product is made of a resin.

According to a fourth aspect of the present invention, the uneven surface (G) of the bonding layer interface (F) of the layered body (D) is formed in a strip shape along the axial direction. Or a laminated molded product according to claim 2.

According to a fifth aspect of the present invention, the uneven surface (G) at the interface (F) of the bonding layer of the layered body (D) is formed to be twisted along the axial direction. Or Claim 2
It is a laminated molded article described in 1.

According to a sixth aspect of the present invention, a plurality of injection portions (1) for melting and injecting the molding material from the nozzle (8) are provided for each molding material (X, Y, Z) of different colors or different materials. Each molding material (X, Y, Z) is communicated with each nozzle (8) of each injection section (1) through each passage (11), and each layer material (A, B,
C) having a layer forming surface (12) and having a united surface (14) for uniting the respective layer bodies (A, B, C) to form a layered body (D). ), A die head (10) having an outlet (14a) formed in a parison (E) on the outflow side, and a parison (E) extruded from the die head (10) are pressed against a molding surface (38) to press the molding surface (38). 38) (3)
0), and the uneven portion forming means (F) in which the bonding layer interface (F) of each layer body (A, B, C) is formed on the uneven surface (G) in the injection portion (1) and / or the die head (10). 16)
Have

According to a seventh aspect of the present invention, an uneven portion forming means (2)
The control device (24) for periodically increasing and decreasing the injection amount of the molding material (X, Y, Z) injected from each nozzle (8) of each injection section (1). The molding machine according to the above.

According to the present invention, there is provided an uneven portion forming means (2).
6) is a layer forming surface (1) forming each layer body (A, B, C).
2) Outer surface (1) of the formation surface (12a, 12b)
2F ₂₎ in a molding machine according to claim 6, which is configured in a helical groove (12a _1, 12b _1).

According to a ninth aspect of the present invention, an uneven portion forming means (1) is provided.
6) is a layer forming surface (1) for forming each layer body (A, B, C).
The outer surface (12F) of the formation surface (12a, 12b) in 2)
A molding machine according to claim 6, characterized in that it comprises an axial straight grooves (12a _2, 12b _{2) 2).}

According to a tenth aspect of the present invention, there is provided an uneven portion forming means (1).
6) is a layer forming surface (1) for forming each layer body (A, B, C).
The outer surface (12F) of the formation surface (12a, 12b) in 2)
Inclined grooves inclined with respect to the axial direction ₂₎ (12a _3, 12b
The molding machine according to claim 6, wherein the molding machine has the following feature ( ₃ ).

[0028] According to the eleventh aspect of the present invention, the uneven portion forming means (1) is provided.
6) Nishisenmizo (12a _1, 12b ₁₎ or straight grooves (12
a ₂ , 12b ₂ ) or inclined grooves (12a ₃ , 12b ₃ ) are formed on the uneven portion forming bushes (S ₁ , S ₂ ), and the uneven portion forming bushes (S ₁ , S ₂ ) are fitted to the die head (10). The molding machine according to claim 6, wherein the molding machine is in conformity with the molding machine.

According to a twelfth aspect of the present invention, an uneven portion forming means (1) is provided.
6) is a molding machine according to claim 6, characterized in that the concavo-convex part forming bush (S _1, S ₂₎ is rotatably fitted in the die head (10).

According to a thirteenth aspect of the present invention, there is provided the layer forming surface (12).
Are formed at the outlets (14a, 12b, 12c).
The nozzle (8) is formed of a molding material in order from a first forming surface (12a) which is formed on a step surface having a larger diameter toward a) and forms a layer body (A) inside the layer body (D). 6, 7, 8, 9, 10, 10
It is a molding machine described in 11 or 12.

According to a fourteenth aspect of the present invention, there is provided the layer forming surface (12).
8. The molding machine according to claim 6, wherein the passage (11) communicating with the outer surface (12F2) of the above is tangentially connected to the peripheral surface of the outer surface (12F2).

According to a fifteenth aspect of the present invention, the united surface (1) is formed.
4. A throttle (19) having a tapered shape with a gradually decreasing gap toward the outlet (14a). The molding die described in the above.

According to the present invention, there is provided a molding apparatus (30).
(E) extruded from the die head (10)
(36) having a molding surface (38) surrounding the tip and sealingly holding a peripheral end (G) of the parison (E).
(31) having a bag and holding it in a bag shape;
A fluid mandrel (34) disposed within said parison (E) within the molding surface (38) of 1) for co-blowing with the molding surface (38).
8, 9, 10, 11, 12, 13, 14, 15.

According to a seventeenth aspect of the present invention, a molding material (X, Y, Z) of a different color or a different material is supplied to each of the injection portions (1a, 1b, 1).
c) and supply them separately to each injection unit (1).
a, 1b, 1c), the injection amount of the molding material from each nozzle (8a, 8b, 8c) is increased or decreased in a cycle, and the die head (1
0) to the layer-forming surface (12) to form a layer body (A, B,
C) and forming the parison (E) from the outlet (14a) while pressing the layered body (A, B, C) against the joining layer interface (F) by the union forming surface (14). This is a method of forming a laminated molded product in which (E) is arranged in the molding surface (38) of the molding die (31) and pressed into the molding surface (38).

According to the eighteenth aspect of the present invention, a molding material (X, Y, Z) of a different color or a different material is injected into each of the injection portions (1a, 1b, 1).
c) and supply them separately to each injection unit (1).
a, 1b, 1c), the injection amount of molding material from each nozzle (8a, 8b, 8c) is periodically increased or decreased to form a die head (1).
0) to the layer-forming surface (12) to form a layer body (A, B,
C) and forming the parison (E) from the outlet (14a) while pressing the layered body (A, B, C) against the joining layer interface (F) by the union forming surface (14). (E) is arranged in the molding surface (38) of the molding die (31), and the distal end peripheral portion (E ₁ ) is sealed and held by the holding portion (36) to form a bag-like shape by the molding die (31). This is a molding method in which a fluid is blown from the mandrel (34) to the bag-shaped parison (E) to form a laminated molded product formed by the molding surface (38).

[0036]

According to the present invention, there is provided a laminated molded article according to the present invention, in which a joining layer interface F between the laminated molded articles is formed into an uneven shape in cross section, and the preformed parison E is further molded by a molding die. In addition, the bonding can be performed such that both surfaces of the bonding layer interface F bit each other. For this reason, even when compatibility of both materials cannot be expected, both can be strongly bonded.

A molding machine according to any one of claims 6 to 16, and a molding machine according to claim 1.
The present invention of the molding method of 7 and 18 uses the uneven portion forming means 16 to inject while continuously increasing or decreasing the injection amount of the molten molding material from the injection section 1 through the nozzle 8 and the die head 10. Each layer body A, B,
Form C. Next, the respective layers A, B, and C are combined with the united formation surface 1.
It is formed on the layered body D bonded at 4 and extruded from the outlet 14a to form the parison E. At this time, the bonding layer interface F where the layer bodies A, B, and C of the parison E are bonded is
Since the parison E is joined in an uneven shape, the parison E is pressed against the molding surface 38 of the mold 31 and molded, whereby both interfaces of the joining layer interface F bit each other and are integrally bonded. .

The molding machine is constructed as in claims 6 to 16 and the molding method is constructed as in claims 17 and 18.

Further, the laminated molded product is formed into a complicated cylindrical shape,
For example, when molding like boots, Parison E
Is arranged in the molding surface 38, and a fluid is sprayed on the inner peripheral surface of the parison E by the fluid spraying mandrel 34 arranged in the parison E to expand the parison E and to press against the molding surface 38 to perform blow molding. Is what you do.

For this reason, even if the laminated molded product has a complicated and cylindrical shape, or even a shape having irregularities that are difficult to release, the laminated molded product can have strong adhesion between the laminated layers. It becomes possible to mold.

[0041]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a cross-sectional view of an injection section 1 and a die head 10 of a molding machine for laminated molded products according to an embodiment of the present invention. FIG. 2 is a configuration diagram of the control device of FIG.
FIG. 3 is a sectional view of a molding apparatus 30 for blow molding. Further, FIG. 4 is a cross-sectional view showing a state where the molding device 30 of FIG. 3 is clamped and the blow molding is completed.

In FIG. 1, reference numeral 1 denotes an injection unit. The injection unit 1 is provided in a molding machine, and two injection units are arranged in parallel. The first injection unit 1a is configured to melt and inject an elastic plastic molding material X charged into a hopper (not shown). Also, the second injection unit 1
b is configured to melt and inject a rubber molding material Y, such as acrylic rubber, which is also charged into the hopper.

In each of the injection sections 1a and 1b, first and second injection screws 2a and 2b are provided in first and second screw cylinders 4a and 4b. The injection screws 2a, 2b are configured to rotate inside the screw cylinders 4a, 4a by first and second rotation devices 9a, 9b provided at the rear, and the first and second rotations are performed.
It is configured to advance and retreat by the injection driving devices 3a and 3b. These operations are performed by controlling the power unit 20 and the servo valve 7 by the control unit 24.

Each of the injection screws 2a and 2b is
By rotating inside the screw cylinders 4a and 4b, the molding materials X and Y are kneaded and melted. Further, by advancing each of the injection screws 2a and 2b, the molding materials X and Y are supplied to the die head 10 by the respective nozzles 8a and 8b.
Inject from b.

The control of each of the injection sections 1a and 1b for melting and injecting the molding materials X and Y is performed by controlling an interface circuit (I / F) that receives a pressure detection signal of each of the pressure sensors 6a and 6b in each of the nozzle sections 8a and 8b. ) 23 and each injection screw 2 from the axial movement of each injection drive 3a, 3b.
an I / F 22 for detecting the positions of a and 2a and inputting readings from the position sensors 5a and 5b, and I / F 22 and I / F 2
3 to control the servo valve 7 via the I / F 21 to control the injection screw 2a,
The control device 24 is configured to control the 2b to move so as to intermittently increase and decrease the injection amount, and a setting device 25 for setting conditions of the control device 24.

The configuration relating to the control device 24 is configured as shown in FIG. In FIG. 2, the control device 2
4 is an arithmetic processing unit (CPU) 2 having a computer
40, a memory 242, an A / D converter 244, an I /
An O device 246 and a D / A converter 243 are provided. The analog pressure signal input from the I / F 23 is converted into a digital pressure signal by the A / D converter 244. Similarly, the position signal of the analog injection screw 2 input from the I / F 22 is A / D
The signal is converted into a digital position signal (stroke signal) by the converter 244. The CPU 240 performs a control operation by operating a control program stored in the memory 242. The result is output to the I / F 21 through the D / A converter 243 as a digital servo valve 7 drive signal.

With the control device 24 as described above, the injection is performed while continuously increasing or decreasing the injection amount of each of the injection units 1a and 1b. The control of the injection amount can be performed by detecting with the pressure sensors 6a and 6b of each nozzle portion 8. Further, detection by the position sensors 5a and 5b can be used to control the increase or decrease of the injection amount based on the movement distance of the injection screw 2. In the present embodiment, injection is performed while taking data from both sensors 5 and 6 and checking with the setting unit 25.

Different molding materials X and Y are injected into the die head 10 from the respective injection sections 1a and 1b. Each die 11 is provided with a respective passage 11 that communicates with each of the injection units 1a and 1b.
a, 11b are formed, and these passages 11a, 11b
b communicates with the cavity 13 in the cylindrical layer forming surface 12 for molding the parison E.

The layer forming surface 12 includes first and second forming surfaces 12a, 12a for forming the layers A, B for each of the molding materials X, Y.
b. Also, the inner surface 12F of the layer forming surface 12
1 is for the core 29
Are formed by the outer peripheral surface. The layer forming surface 12
Inside is a cavity 13.

The first forming surface 12a is formed on the inner peripheral side of the upper part of the layer forming surface 12 in the drawing, and the first nozzle 8a provided in the first injection portion 1a from the upper part of the drawing.
Through a first passage 11a. Also, the second
Is formed outside the first forming surface 12a by forming a step surface from the first forming surface 12a, and communicates with the second nozzle 8b provided in the second injection portion 1b via the second passage 11b. ing. On the step surface of the first forming surface 12a and the second forming surface 12b, there is formed a weir portion 15 through which the molding material flows downward. The lower side of the figure where the first forming surface 12a and the second forming surface 12b are united is the first layer body A and the second layering surface.
Is formed with the layer body B of FIG. The united surface 14 forms a cavity 13 in the same space as the inside of the layer formed surface 12.

The outlet 14a side of the coalesce forming surface 14 is formed as a narrowed portion 19 whose both sides are formed in a tapered shape and whose gap dimension is gradually reduced in order to narrow the parison E.
It should be noted that the provision of the constricted portion 19 is a preferred embodiment, but is not necessarily required.

The parison E is formed downward so as to be pushed out from the outlet 14a of the die head 10. Below the die head 10, a blow molding device 30 is provided.
Is provided.

FIG. 3 shows a molding apparatus 30 for this blow molding.
FIG. In FIG. 3, the molding die 31 is configured to be divided into a first die 31a and a second die 31b and to be opened on both sides. In addition, on the lower side of the molding die 31, an enlargement tool 33 that is movable by a pressure cylinder 32 is provided similarly to the first die 31a and the second die 31b. The magnifying device 33 is a tip peripheral portion E _{1 of the} parison E.
The enlarged so that the diameter (root E2 shown lower phantom line is a sectional view enlarging a tip circumferential portion E ₁ of the parison) is to.

The mandrel 3 at the center of the magnifier 33
The inside of 4 is formed in a hollow passage in the axial direction, and a large number of lateral holes 34a communicating with the hollow passage are formed. The mandrel 34 is connected to the lower drive cylinder 3.
5, the fluid (air) is ejected from the lateral hole 34a after the mandrel 34 is moved into the mold 31, and the blow molding is performed. Is made to be able to.

FIG. 4 is a cross-sectional view showing a state in which the molding die 31 is closed from the state shown in FIG. 3, and the mandrel 34 is moved up to blow molding. In FIG. 4, the first mold 31a and the second mold 31b are clamped from the state shown in FIG. 3, and the blow molding surface 38 is formed by the two molds 31a and 31b. At this time, the tip circumferential portion E ₁ of the parison E is mold 3
Entire circumference of the tip circumferential portion E ₁ is held in sealing by the holding surface 34b of the holder 36 and the mandrel 34 provided 1. At the same time, the upper part of the parison E is also hermetically sandwiched between the tip 37 of the mandrel 34 and the holding surface 38a of the mold 31.

In this state, the horizontal hole 34a of the mandrel 34
Then, air is blown out from above to press the parison E against the molding surface 38 of the molding die 31. At the same time, the tip periphery E of the parison E
Waste roots E2 ₁ is cut by the cutting blade 36a provided at the lower end of the holder 36.

When releasing the laminated molded product 40 from the mold shown in FIG. 4, the first mold 31a and the second mold 31b
Are opened to both sides, and the mandrel 34 is lowered to release the laminated molded product 40 from the molding die 31.

FIG. 5 is a sectional view of a die head according to a second embodiment of the present invention. The parison E is a half sectional view. 5, the die head 10 is different from the die head 10 shown in FIG.
With the outer surface 12F ₂ is formed on the first spiral groove 12a ₁ that a relief surface G (waveform) of the first passage 1
1a is formed so as to first spiral groove 12a ₁ flows tangentially. This is the concavo-convex portion forming means 16 for forming the concavo-convex surface G on the outer peripheral surface of the first layer body A.

The molding material X injected from the first injection portion 1a passes through the first passage 11a and the first spiral groove 1
Section on the outer peripheral surface of the first layer member A and flows as caught in 2a ₁ are those formed to be uneven surface G. In the case of the second embodiment, a fixed amount is emitted without increasing or decreasing the injection amount of the injection unit 1 in a cycle. However, it may be used in combination with the method of increasing or decreasing the injection amount.
Note that the outer surface 12F ₃ of the second forming surface 12b, there is no need to form. (This surface is a surface to be the outer surface of the layered body D.)

The injection unit 1 and the molding device 30 according to the second embodiment are the same as those in FIG. Further, the molding device 30
Is not limited to blow molding, and can be directly injected into the mold from the die head 10. Further, there is a method of compression-molding the parison E via a piston, such as transfer molding. Since a conventional molding apparatus may be connected to the die head 10, a detailed description of the molding apparatus will be omitted.

FIGS. 6 to 10 are sectional views of a molding machine according to a third embodiment of the present invention. The molding method is shown in FIGS.
It is molded in a process such as 10. FIG. 6 is a sectional view of the injection unit 1 and the die head 10 of the molding machine. FIG. 7 is a sectional view showing a state where the die head 10 and the blow mold 31 of FIG. 6 are opened. FIG. 8 is a cross-sectional view showing a state where the mold 31 of FIG. 7 is closed. FIG. 9 is a sectional view of the blow molding state. FIG. 10 is a cross-sectional view of releasing the laminated molded product 40 from the molding die 31.

In FIG. 6 (see also FIG. 7), the molding machine
It comprises a first emitting section 1a and a second emitting section 1b. The first injection part 1a is provided with a distribution valve 17 in the first passage 11a and is branched into a first passage 11a and a third passage 11c formed into two passages.

The first injection section 1a puts resin pellets into the first hopper 18a in order to inject the resin molding material X. Then, the light is branched into the first passage 11a and the third passage 11c by the distribution valve 17 provided in the first passage 11a, and is injected into the cavity between the layer forming surfaces 12 of the die head 10. This distribution valve 17 is connected to the third passage 11c.
, A timer is provided for controlling the injection so as to be delayed later than the molding material flowing through the first passage 11a.

The second injection part 1b is made of a rubber molding material Y.
And the second hopper 18b
Is provided such that a rubber material is provided in a hoop shape and supplied to the injection unit 1b.

A first passage 11a, a second passage 11b, and a third passage 11c communicate with the cavity 13 in the layer forming surface 12 of the die head 10 from the upper part in the figure. In the layer forming surface 12, the first passage 11a communicates with the inside of the first forming surface 12a. Also, the second passage 11
b communicates between the second forming surfaces 12b. Further, the inside of the third formation surface 12c communicates with the third passage 11c.

On the outer surface 12F ₂ of the first forming surface 12a,
With the first spiral groove 12a ₁ is formed, second
On the outer surface 12F ₂ formation surface 12b of the second spiral groove 12
b ₁ is formed to constitute the uneven portion forming means 16.
Then, when the molding material X of the resin flows from the first passage 11a and reaches the cavity between the second forming surfaces 12b, the molding material Y of the rubber passes through the second passage 11b.
Flows into the cavity between the second forming surfaces 12b. Similarly, when the two layers A and B formed by the first forming surface 12a and the second forming surface 12b reach the third forming surface 12c, the resin molding material Z from the third passage 11c. Is injected. The amount of injection of the first injection unit 1a and the second injection unit 1b is the same as in the first embodiment.
You may use together. Further, the injection amount of the third injection unit 1c may be increased or decreased periodically, but is not always necessary. Further, it is preferable that the above-described increase and decrease of the injection amount be alternately increased and decreased.

The three-layered structure D has first and third layers A and C made of the same resin on the inside and outside, and a second layer B made of rubber in the middle. The bonding layer interfaces F on both sides of the second rubber layer B form a cross-sectional waveform and are bonded to the first layer body A and the third layer body C. Since the layered body D is configured such that the cavity 13 decreases the gap as it moves to the outlet 14a, the three layers of the parison E are pressed against each other below the interface of the joining layer to form the parison E having three layers.
extruded from a.

In particular, the gap between the two tapered surfaces 14b among the gaps between the cavities 13 of the united formation surface 14 is formed so as to become smaller toward the outflow side. It is also recognized that the cylindrical gap may be made substantially the same as the dimension of the cylindrical gap above the constricted portion 19, so that the slightly compressed wall thickness may be loosened.

FIG. 7 is an enlarged sectional view of the die head 10 and the mold 31 for blow molding. In FIG. 7, the shape of the die head 10 is as described above. Since the gap of the outlet 14a of the die head 10 is small and the shear rate of the molding material at the outlet increases (or in some cases, it depends on the characteristics of the molding material), compared with the parison E shown in FIGS. This parison E is the outlet 14a
It is extruded into a larger diameter cylindrical shape. In this case, there is an effect that the outer dimensions of the die head 10 are reduced.

The blow molding die 31 shown in FIG. 7 is a schematic view showing a state in which the mold is opened from the dividing surface, but the other entire structure is substantially the same as the blow molding device 30 shown in FIG. The difference is that the fluid (air) injection nozzle (mandrel) 34
Is provided on the upper side.

FIG. 8 is a diagram showing a state where the first mold 31a and the second mold 31b are clamped from the state shown in FIG. The fluid (air) blowing nozzle (mandrel) 34 is provided on the upper side, and is configured to move into the mold 31 during blow molding.

FIG. 9 is a sectional view of the mold 31 during blow molding. In FIG. 9, air is blown from a fluid (air) blowing nozzle (mandrel) 34 to a parison E in a molding cavity 39 of a molding die 31 to form a molding surface 38.
The three-layer laminated molded article 40 corresponding to the above is molded.

FIG. 10 is a view showing a state where the mold 31 is opened and the fluid (air) blowing nozzle (mandrel) 34 is moved to the die head 10 side. The laminated molded product 40 is released from the molding die 31 and the burrs 26 provided above and below the laminated molded product 40 are cut by the blade 27 to finish the laminated molded product 40.

FIG. 11 is a sectional view of a die head 10 showing a fourth embodiment according to the present invention. In FIG. 11, the layer forming surface 12 is composed of a first forming surface 12a, a second forming surface 12b, and a third forming surface 12c.
Then, the first forming surface 12a which is the uneven portion forming means 16
The first forming surface 12a of FIG.
Similarly, the first and second spiral grooves 12a ₁ , 12b ₁
Are formed. Then, the first passage 11a and second passage 11b, and communicates with the tangential direction first and spiral grooves 12a ₁ relative to the second spiral groove 12b _1. A plurality of third passages 11c are provided on the third forming surface 12c. The injection of the molding material from these passages is performed by the first passage 11a, the second passage 11b, and the third passage 11c.
It is performed in the order of The uneven surface G is formed at the bonding layer interface F of the layered body D by the spiral groove 12 as the uneven portion forming means 16. In addition, all the surfaces forming the uneven surface G by the first forming surface 12a and the second forming surface 12b
Identified as 2F _2.

FIG. 12 is a sectional view of a molding machine according to a fifth embodiment.

In FIG. 12, the injection unit 1 is provided with three injection units 1a, 1b, and 1c in parallel. This molding machine is a case where the layered body D has a three-layer structure, and the three layers have different materials. Alternatively, it is also the case of a layered body D having a three-color structure. That is, the laminated molded article 40 is composed of the layer bodies A, B, C
Are different from each other, or the layers A, B, and C are three colors.

The configuration of the die head 10 shown in FIG. 12 is similar to that of the first, second and third injection units 1a, 1
b and 1c, the layer forming surface 12 of the die head 10 also has the first forming surface 12a and the second forming surface 12b.
And the third forming surface 12c. The boundary between the first passage 11a and the first formation surface 12b, the boundary between the second passage 11b and the second formation surface 12b, and the boundary between the third passage 11c and the third formation surface 12c include: Each of the dam portions 15 is formed so that the molding material flows in a cylindrical shape. Other configurations are shown in FIG.
Are substantially the same as those shown in FIG. That is, similarly to the first embodiment, the uneven portion forming means 16 is formed by injection while continuously increasing or decreasing the injection amount of the molding material.

The molding apparatus 30 in the next step of the die head 10
Is configured to be connected to a blow molding apparatus or a normal compression molding die or transfer molding die to be molded.

Also in this molding machine, the first injection unit 1
a, the molding materials X, Y, and Z are injected onto the forming surfaces 12a, 12b, and 12c of the layer forming surface 12 with a time lag in the order of the second injection unit 1b and the third injection unit 1c. The injection amounts of the molding materials X, Y, and Z are alternately increased and decreased in a cycle and are injected.

The light is injected into the layer forming surface 12 to form each of the forming surfaces 1.
The three-layer first, second and third layer bodies A, B, and C are formed by 2a, 12b, and 12c. The cross section is formed into an uneven waveform by the injection due to the increase or decrease of the injection amount. Next, the first layer body A, the second layer body portion B, and the third layer body C flow into the united formation surface 14 and are formed into the layered body D. While being formed as the layered body D, the layered body D is moved from the outlet 14a to the forming die 31 while being compressed by the narrowed portion 19 which flows out below the die head 10 and reduces the gap between the united formation surfaces 14 as necessary. Will be done.

FIG. 13 is a sectional view of a molding die showing a sixth embodiment according to the present invention.

In FIG. 13, a molding apparatus 30 is provided with a molding die 31. The molding die 31 includes divided upper dies 31a and 31b and a lower die 31c. The upper molds 31a and 31b are the first aliased divided models.
And a second mold 31b. Then, the parison E is inserted into the molding surface 38 of the lower mold 31c, and the first mold 31a and the second mold 31b are clamped from both sides to be compression-molded into a flutter molding.

After molding, the first mold 31a and the second mold 31
b is opened on both sides, and the lower mold 31c is forcibly released from the laminated molded product 40 to be taken out. In addition, a burr groove 38a is formed on the joint surface between the upper molds 31a and 31b and the lower mold 31c below the molding surface 38.

FIG. 14 is a sectional view of a laminated molded product 40 showing one embodiment according to the present invention.

In FIG. 14, this laminated molded product 40 is
It is molded by the molding machine of the first embodiment shown in FIG. The molding die 31 is formed in a shape having a different bellows portion from those shown in FIGS. The laminated molded product 40 is a boot used for universal joints and the like.

The laminated molded article 40 is composed of two layers of two materials A and B
Wherein the inner layer body A is made of a chloroprene rubber material. The outer layer body B is made of a strong elastic plastic material. The interface F of the bonding layer is bonded to the unevenness having a small cross section. Since the inner layer body A of the laminated molded article 40 is made of chloroprene rubber and the outer layer body B is made of a resin material, compatibility between the two is not preferable. For this reason, in normal molding, the interface F of both bonding layers often peels during use. However, as in the present invention, the bonding layer interface F has an uneven surface G
When they are pressed together in a welded state, the two materials are engaged and bonded on the uneven surface, so that they can be strongly joined even if the compatibility of the materials is poor.

FIG. 15 is a cross-sectional view of a state where the boot, which is the laminated molded product 40 of FIG. 14, is mounted.

The boot 40 has a mounting portion 44 at one end and a fitting portion 45 at the other end. Further, an intermediate portion is formed in the bellows portion 46. The boot 40 is mounted to cover the universal joint 47. The mounting state is such that the mounting portion 44 is
8 through the band H and the fitting portion 4
5 is fitted to the shaft 49 and fastened by the band H.

The bellows portion 46 of the boot 40 is
7 requires the strength of the bellows portion because it receives a force accompanying deformation such as bending and expansion / contraction along with the operation of 7. At the same time, the mounting portion 44 needs to be tightly fitted to the outer ring 48, and the fitting portion 45 needs to be tightly fitted to the shaft 49.

However, since the inner layer body A is made of a rubber material, the boot 40 can be hermetically sealed together with oil resistance. Further, since the outer layer body B is made of an elastic plastic material, even if it is elastically deformed, its strength resistance is improved as compared with rubber or the like. The interface F of the two layers does not peel off because the two materials are welded to each other as if they bite each other.

FIG. 16 is a cross-sectional view of a three-layer laminated molded product 40 molded by the molding machine of the present invention. This laminated molded product 40 is a cross-sectional view formed on a boot composed of three layers. The three-layer bonding layer interfaces F, F are bonded in a state where the two surfaces joined and engaged with the unevenness are microscopically bite. The outer layer body C of the boot 40 is made of an elastic plastic and is intended to maintain durability. At the same time, the material is lightweight and the strength is improved. The inner layer body A is made of a rubber material having excellent sealing ability as well as oil resistance. For example, fluorine rubber, nitrile rubber and the like are used. The intermediate layer body B is formed of a rubber layer having good compatibility with the inner and outer layer bodies A and C or a resin layer having good adhesiveness. This intermediate layer body B is, for example, silicon rubber.

FIG. 17 is a sectional view of a die head according to a seventh embodiment of the present invention.

In FIG. 17, the structure of the die head 10 is a case where the layered material D of the molding material injected from the nozzle portion 8 has a three-layer structure as shown in FIG. . Therefore, the overall structures of the injection units 1a, 1b, 1c, the die head 10, and the molding device 30 are the same as those shown in FIG. It is not necessary to perform the injection while continuously increasing or decreasing the injection amount of each injection unit.

In the above-described die head 10, two uneven portion forming bushes S ₁ and S ₂ are fitted in the mounting holes 28 as the uneven portion forming means 16 as shown in FIG. By attaching the uneven portion forming bushes S ₁ and S ₂ to the die head 10, various shapes of uneven portion forming bushes S ₁ and S ₂ are provided.
₁ and S ₂ can be exchanged as needed. For this reason, it is possible to select the uneven portion forming bushes S ₁ and S ₂ according to the adhesive strength of the three layers of molding material.

[0096] Figure 18 is a sectional view showing a first uneven portion formed bushing S ₁ of A-A arrow view of FIG. 17. The first forming surface 1 which is the inner peripheral surface of the _first uneven portion forming bush S1
The first straight groove 1 having a semicircular cross section is formed on the outer surface 12F2 of the _second groove 2a.
2a ₂ a plurality along the circumference are arranged. The material of the _first uneven portion forming bush S1 is a metal such as stainless steel or a plastic material. The first outer peripheral surface 42 is fitted in the mounting hole 28 of the die head 10.

FIG. 19 shows the formation of the second uneven portion in FIG.
Bush S_TwoIt is a perspective view of. Second uneven part forming bush
New S_TwoAlso the first uneven portion forming bush S₁Outer surface 1 as well
2F _TwoA second straight groove 12b having a semicircular cross section_TwoIs circumferential
Are formed at regular intervals. And the second uneven portion
Forming bush S_TwoOf the die head 10
Is formed so as to be fitted in the mounting hole 28 of the first embodiment.

The first and second uneven portion forming bushes S ₁ and S ₂ are mounted in series in the axial direction in the mounting holes 28 of the die head 10 to form the uneven portion forming means 16.

As shown in FIG. 12, the nozzles 8a, 8b and 8c of the injection unit 1 are connected to the die head 10. Then, three types of molding materials are supplied from the injection unit 1 to the nozzles 8a and 8a.
When injected into the cavity 13 through b and 8c, the joining layer interface F where the first layered body A, the second layered body B, and the third layered body C are united along the circumferential direction of the layered body D. As a result, an uneven surface G is formed. This molding is carried out in the same manner as in the third embodiment (see FIG. 6) and the fifth embodiment (see FIG. 12). Also in this case, the uneven surface G is formed on the interface F of the bonding layer by the uneven portion forming means 16 without continuously increasing or decreasing the injection amount of each of the injection portions 1a, 1b, and 1c. A good result can be obtained when used in combination with the uneven portion forming means 16 for continuously increasing or decreasing the injection amount.

FIG. 20 is a sectional view taken along the line BB of the parison E of FIG. In FIG. 20, the parison E has an uneven surface G formed at the interface F of the bonding layer by the uneven portion forming means 16.
Since the uneven surface G is strongly bonded between the united formation surfaces 14, the uneven surface G is formed into a gentle uneven surface G to enhance the adhesive force.

FIG. 21 is a perspective view of uneven portion forming bushes S _1a and S _2a showing an eighth embodiment of the present invention. FIG.
First uneven portion formed bushing S _1a shown in 1 is fitted in the first position of the concavo-convex part forming bushing S ₁ mounted in FIG. The second uneven portion forming bush S _2a is
It is fitted in the position of the concavo-convex part forming bush S _2.

The first and second uneven portion forming bushes
S_1a, S_2aAre the first and second inner peripheral surfaces of the bush.
Outer surface 12F of forming surface 12a, 12b_TwoTo incline the groove
First and second inclined grooves 12a_Three, 12b_ThreeFormed
Have been. This inclined groove 12a _Three, 12b_ThreeTo the axis of
The angle is preferably formed in the range of 3 ° to 45 °. Other
The configuration is similar to the first and second embodiments of the seventh embodiment.
Uneven part forming bush S ₁, S_TwoAre arranged in substantially the same manner.
Then, the two first and second uneven portion forming bushings are formed.
New S_1a, S_2aThe uneven portion forming means 16 is constituted by the arrangement of
It is.

The first bushes S _1a and S _2a have the first uneven portions.
17 and the second inclined grooves 12a ₃ and 12b ₃ are provided.
As shown in FIG. 5, the uneven surface forming means 16 attached to the mounting hole 28 of the die head 10 joins the uneven surface G to the joining layer interface F of the parison E while forming a twist, thereby increasing the adhesive strength. .

Die head 1 shown in the eighth embodiment
The cross section of the parison E formed by 0 as viewed in the direction of arrows BB shown in FIG. 17 also has a cross section as shown in FIG. 20, and is formed such that the uneven surface G is twisted along the axial direction. It is recognized that the twist of the uneven surface G increases the bonding strength at the interface F of the bonding layer.

FIG. 22 is a sectional view of a die head 10 according to an eighth embodiment of the present invention.

The overall structure of the die head 10 in FIG. 22 is substantially the same as that of the die head 10 shown in FIG. The configuration different from the die head 10 of FIG. 17 is that the first and second uneven portion forming bushes S _1b and S _2b are configured to rotate with respect to the die head 10. The concavo-convex portion forming means 16 is constituted by the configuration related to the rotating concavo-convex portion forming bushes S _1b and S _2b .

In FIG. 22, a ball 80 is interposed between the die head 10 and the concave / convex portion forming bushes S _1b , S _2b, and the molding materials X, Y, Z are supplied to the nozzles 8a, 8b, 8c.
The projections and depressions are formed in such a manner that the bushes S _1b , S _2b are rotated by the emission power when the _projections are ejected toward the cavity 13.

[0108] along the circumferential direction between the concavo-convex part forming bushing S _1b, configured to rotate the S _2b each concavo-convex part forming bushing S _1b, the mounting hole 28 of the outer peripheral surface 42, 43 and die head 10 of S _2b The bearings (balls) 80 are interposed evenly. As another means for rotating the uneven portion forming bushes S _1b , S _2b , the uneven portion forming bushes S _1b , S _2b may be freely rotatable by loosely fitting into the mounting holes 28 of the die head 10. Further, a tooth profile is formed on the uneven portion forming bushes S _1b and S _2b, and the tooth profile can be rotated by a motor. This motor is rotated at an appropriate rotation speed by a command from the control device 24 (see FIG. 1).

FIG. 1 is a sectional view taken along the line AA in FIG.
8 or the outer surface 12F ₂ of the layer forming surface 12 as shown in FIG.
There are formed in a linear groove 12a ₂ or the inclined groove 12a _3. Further, the cross section taken along the line A′-A ′ in FIG.
9 or as shown in FIG. FIG.
In the BB cross section of the parison E, the bonding layer interface F of each layer body is formed on the uneven surface G as shown in FIG.

As described above, in the first to eighth embodiments, the uneven surface G is formed at the bonding layer interface F of each of the layers A, B, and C, and the gap between the layers A, B, and C is formed. As means for strongly bonding the non-adhesiveness due to the difference in material, a control means 25 for periodically increasing or decreasing the injection amount of each of the injection units 1a, 1b, 1c, or the forming surface 12a of the layer forming surface 12 of the die head 10, Spiral grooves 12a ₁ , 12b formed in 12b
_1, the linear groove 12a _2, 12b _2, the inclined grooves 12a _3, 12
It described above with respect to the b _3. Various means for forming the uneven surface G at the interface F of the bonding layer can be considered, and the means for forming the uneven surface G is referred to as the uneven portion forming means 16.

[0111]

According to the first, fourth and fifth aspects of the present invention, the interface between the joining layers of different colors or different materials is formed by welding the uneven surfaces to each other when the molding material is supplied.
Even with dissimilar materials having poor compatibility, the effect of strongly welding the interface of the bonding layer during molding can be expected. For this reason, the laminated molded article is made of a composite material and adhered, and an effect of exhibiting excellent characteristics of each material is exhibited.

In the laminated molded product according to the second aspect of the present invention, since the intermediate layer is made of a material having a higher adhesive strength than the adjacent layer, the two layers are provided with the intermediate layer interposed therebetween. It is possible to expect an effect of obtaining a laminated molded product as an excellent composite material in consideration of only excellent characteristics without considering the adhesiveness of the layer body.

In the laminated molded product according to the third aspect of the present invention, one of the layers is made of rubber and the other is made of resin. It can be expected to demonstrate the sealing ability with the part. Also, by using the other layer body as a resin material, it is expected that the weight can be reduced and the tensile strength can be improved. Furthermore, it is recognized that the strength of one layer of rubber is strongly reinforced by the other layer of resin.

In the molding machine according to the sixth aspect of the present invention, since the joining layer interface of the layered body is formed into an uneven surface and is formed by welding by pressing, molding is performed. An excellent molding machine can be obtained.
Further, by improving only the die head or the control device, it is possible to form a laminated molded product having a complicated shape and a high adhesive force, so that the manufacturing cost of the molding machine can be reduced.

The molding machine according to the seventh aspect of the present invention has a control means for increasing or decreasing the injection amount in the injection part. By changing the set value of, a multilayer laminated molded product can be easily formed.

In the molding machine according to the present invention, the spiral groove, the linear groove, and the inclined groove are formed only on the layer forming surface of the die head, and the uneven portion is formed on the interface of the bonding layer. As a result, an uneven portion can be reliably formed at the interface of the bonding layer. Further, the processing of these grooves can be manufactured at low cost, so that the cost of the molding machine can be reduced. or,
By providing these grooves on the uneven part forming bush,
Processing becomes easy, and the optimal uneven portion forming bush can be replaced and mounted according to the characteristics of the molding material.

According to the twelfth aspect of the present invention, the unevenness formed at the interface of the bonding layer can be enhanced in a simple manner and with a high technique by increasing the adhesive strength by making the unevenness forming bush rotatable. Can be expected to be effective.

In the molding machine according to the thirteenth aspect of the present invention, each of the forming surfaces for forming the layered body is formed as a stepped surface.
The thickness of the layer body of the layered body can be formed to the set thickness, and the unevenness at the interface of the molding layer can be reliably formed. In particular, since the shape of the interface of the bonding layer can be clearly formed, the welding of the bonding surface between the layers can be strongly bonded.

According to a fourteenth aspect of the present invention, since the passage communicating with the outer surface of the layer forming surface is formed tangentially to the outer surface, the molding material flows into the cavity in the forming surface. It is easy to form a layer body and can flow in,
The effect of preventing poor flow can be expected. In particular, when the spiral groove is formed on the outer surface of the forming surface, the molding material flows along the spiral groove, so that the formation of the unevenness is improved.

In the molding machine according to the fifteenth aspect of the present invention, since the constricted portion is formed on the united surface, it is possible to strongly weld the interface between the layers in the bonding layer. In particular, it is possible to obtain a molding machine that presses the uneven surface at the interface of the bonding layer, cuts in the material of both layers, and forms a strongly bonded laminated molded product.

In the molding machine according to the sixteenth aspect of the present invention, since the molding device is molded by blow molding, the bonding layer interface is strongly bonded. Even if the shape of the molded product is complicated, it can be easily molded from the parison. Further, there is an effect that the release of the laminated molded product from the mold becomes easy even if the shape is complicated.

In the molding method of the present invention according to the seventeenth and eighteenth aspects, since a molding material of a different color or a different material is supplied to each of the injection portions, the molding material can be arranged as a layered parison from the die head to the molding die. In addition to reducing the number of steps, it is also possible to reduce the adhesion of burrs to the mold. In addition, it is possible to easily release the laminated molded product from the molding die, thereby improving the efficiency of the operation. or,
Efficiency can be improved by shortening the molding process. Furthermore, since it is a molding method capable of forming a multi-layer laminated molded product simply by putting different types of different materials one by one into each injection section, a method capable of molding a multi-layer laminated molded product which has been impossible in the past is obtained. Will be done.

[Brief description of the drawings]

FIG. 1 is a sectional view of an injection unit and a die head of a molding machine according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a control device of FIG. 1;

FIG. 3 is a cross-sectional view of the molding apparatus, which is a post-process of the molding machine shown in FIG.

4 is a cross-sectional view of the molding machine of the molding machine in FIG. 3 in a state where a molding die is closed.

FIG. 5 is a cross-sectional view of a die head according to a second embodiment of the present invention.

FIG. 6 is a sectional view of an injection unit and a die head of a molding machine according to a third embodiment of the present invention.

FIG. 7 is a sectional view showing a die head of the molding machine of FIG. 6 and an open state of a molding die.

FIG. 8 is a state diagram in which the mold is closed from the state diagram of FIG. 7;

FIG. 9 is a cross-sectional view of the state diagram of FIG. 8 in which the mandrel has moved into the mold and blow molded.

FIG. 10 is a cross-sectional view showing a state in which the laminated molded product is released from the mold after the blow molding of FIG. 9 is completed.

FIG. 11 is a sectional view of a die head according to a fourth embodiment of the present invention.

FIG. 12 is a sectional view of an injection unit and a die head according to a fifth embodiment of the present invention.

FIG. 13 is a sectional view of a molding die showing a sixth embodiment according to the present invention.

FIG. 14 is a cross-sectional view of a laminated molded product according to an embodiment of the present invention.

FIG. 15 is a cross-sectional view of the laminated molded product shown in FIG. 14 attached to a universal joint.

FIG. 16 is a sectional view of a laminated molded product according to another embodiment of the present invention.

FIG. 17 is a sectional view of a die head according to a seventh embodiment of the present invention.

FIG. 18 is a view showing the first uneven portion forming bush shown in FIG.
FIG. 4 is a cross-sectional view taken along arrow -A ′.

FIG. 19 is an enlarged perspective view of a second uneven portion forming bush shown in FIG. 17;

20 is a sectional view of the parison shown in FIG. 17 taken along line BB ′.

FIG. 21 is an enlarged perspective view of an uneven portion forming bush showing an eighth embodiment according to the present invention.

FIG. 22 is a sectional view of a die head according to a ninth embodiment of the present invention.

FIG. 23 is a sectional view of a conventional molding machine.

24 is a cross-sectional view showing a state where the molding machine of FIG. 23 has been opened and rotated by 180 °.

25 is a cross-sectional view of the molding machine of FIG. 23 subjected to secondary molding by clamping.

26 is a sectional view showing a state in which the mold shown in FIG. 25 is opened and a molded product is taken out.

[Explanation of symbols]

Reference numeral 1 ... Injection unit 1a ... First injection unit 1b ... Second injection unit 1c ... Third injection unit 2 ... Injection screw 2a ... First injection screw 2b ... second injection screw 2c ... third injection screw 3 ... injection drive 3a ... first drive 3b ... second drive 3c ... second 3 drive device 4 ··· screw cylinder 4a ··· first screw cylinder 4b ··· second screw cylinder 4c ··· third screw cylinder 5 ··· position sensor 5a ··· 1 position sensor 5b 2nd position sensor 5c 3rd position sensor 6 pressure sensor 6a 1st pressure sensor 6b 2nd pressure sensor 6c · Third pressure sensor 7 ··· Servo valve 8 ··· Nozzle part 8a: first nozzle 8b: second nozzle 8c: third nozzle 9: rotating device 9a: first rotating device 9b: second Rotating device of 10 die head 11 passage 11a first passage 11b second passage 11c third passage 12 layer forming surface 12a first forming surface 12b second forming surface 12c third forming surface 12a ₁ first spiral groove 12a ₂ first linear groove 12a ₃ first inclined groove 12b ₁ second 2b ₂ ... Second straight groove 12b ₃ ... Second inclined groove 12F ₁ ... Inner surface 12F ₂ ... Outer surface 12F ₃ ... Outer surface 13... Cavity 14. 14a ··· Outlet 14b ··· Tapered surface 15 ··· Weir portion 16 ··· Irregular portion forming means 17 ··· Distribution valve 18 ··· Upper 18a First hopper 18b Second hopper 19 Throttling unit 20 Power unit 21 I / F (interface) 22 I / F (interface) 23 -I / F (interface) 24 ... control device 240 ... CPU 242 ... memory 244 ... A / D converter 246 ... I / O device 248 ... D / A converter 25・ ・ ・ Setting device 26 ・ ・ ・ Burr 27 ・ ・ ・ Cutter 28 ・ ・ ・ Mounting hole 29 ・ ・ ・ Core 30 ・ ・ ・ Molding device 31 ・ ・ ・ Molding die 31a ・ ・ First die 31b ・ ・2nd mold 31c 3rd mold 32 Pressure cylinder 33 Enlarger 34 Fluid injection nozzle (mandrel) 34a Horizontal hole 34b Holding surface 35 Drive cylinder 36 ..Holding part 36a..Cutting blade 3 ··························································································· Outer layer part 42 first outer peripheral surface 43 second outer peripheral surface 44 mounting part 45 fitting part 46 bellows part 47 universal joint 48 Outer ring 49 ... Shaft 50 ... Mold 50a ... First mold 50b ... Second mold 51 ... Lower mold 52 ... Upper mold 52a ... First upper mold 52b ... A second upper mold 52b1 a molding surface 53 a molding cavity 53a a first molding cavity 53b a second molding cavity 54 an inlet 55 a primary injection cylinder 56 Secondary injection cylinder 60 ... rotating shaft 61 ... rotary table 80 ... bearing (ball) A ... first layer body B ... second layer body C ... third layer body D ... layered body E ... parison E ₁ ... Tip peripheral portion F... Bonding layer interface G... Uneven surface X... First molding material Y... Second molding material Z. Molding material No. 3 A ': primary molded article B': secondary molded article H: band S1: _first uneven portion forming bush S2: _second uneven portion forming bush _S1a: first uneven part forming bush _S2a: second uneven part forming bush _S1b: first uneven part forming bush _S2b: second uneven part forming bush

Claims (18)

[Claims] 1. A laminated molded article characterized by having an uneven surface (G) formed by molding and bonded to an interface (F) of a bonding layer of a layered body (D) of a different color or a different material. 2. An intermediate layer body (B) of the layer body (D) is made of a material having a stronger adhesive force than the layer bodies (A, C) adjacent to the intermediate layer body (B). The laminated molded article according to claim 1, wherein: 3. One layer body (A) of the layer body (D) formed of a different material of the boot and formed of a rubber, and the other layer body (B) is formed of a resin. The laminated molded article according to claim 1, wherein: 4. The method according to claim 1, wherein the uneven surface (G) of the bonding layer interface (F) of the layered body (D) is formed in a strip shape along the axial direction. The laminated molded article as described. 5. The method according to claim 1, wherein the uneven surface (G) of the interface (F) of the bonding layer of the layered body (D) is formed in a twisted shape along the axial direction. The laminated molded article as described. 6. A plurality of injection parts (1) for melting and injecting a molding material from a nozzle (8) for each molding material (X, Y, Z) of a different color or a different material. 1)
And a layer forming surface (12) that communicates with each of the nozzles (8) through each of the passages (11) to form the molding material (X, Y, Z) on each of the layer bodies (A, B, C). It has a coalescing surface (14) for combining the layers (A, B, C) to form a layer (D) and forms a parison (E) on the outflow side of the coalescing surface (14). A die head (10) having an outlet (14a), and a parison (E) extruded from the die head (10) pressed against a forming surface (38) to form a shape corresponding to the forming surface (38). A device (30), and each of the layer bodies (A, B,
A molding machine characterized by having an uneven portion forming means (16) in which an interface (F) of a bonding layer (C) is formed on an uneven surface (G). 7. A control means for increasing / decreasing the injection amount of molding material (X, Y, Z) injected from each nozzle (8) of each injection section (1) by said uneven portion forming means (16). The molding machine according to claim 6, characterized by comprising (24). 8. The uneven portion forming means (16) includes an outer surface (12F) of the formation surface (12a, 12b) of the layer formation surface (12) for forming each of the layer bodies (A, B, C). ₂ )
Molding machine according to claim 6, characterized in that it comprises a Nishisenmizo (12a _1, 12b ₂₎ on. 9. An outer surface (12F) of the formation surface (12a, 12b) of the layer formation surface (12) for forming each of the layer bodies (A, B, C). molding machine according to claim 6, characterized in that it comprises an axial straight grooves (12a _2, 12b _{2) 2).} 10. The uneven portion forming means (16) includes an outer surface (12F) of the formation surface (12a, 12b) of the layer formation surface (12) for forming each of the layer bodies (A, B, C). ₂ )
Inclined grooves (12a ₃ , 12b ₃ ) inclined to the axial direction
The molding machine according to claim 6, comprising: Wherein said concavo-convex part forming means (16) is the spiral groove (12a _1, 12b ₁₎ or straight grooves (12a _2, 12
b ₂ ) or inclined grooves (12 a ₃ , 12 b ₃ ) are formed on the uneven portion forming bush (S ₁ , S ₂ ) and the uneven portion forming bush (S ₁ , S ₂ ) is fitted to the die head (10). The molding machine according to claim 6, wherein the molding is performed. 12. The uneven portion forming means (16) is configured such that the uneven portion forming bushes (S ₁ , S ₂ ) are connected to the die head (1).
The molding machine according to claim 6, wherein the molding machine is rotatably fitted to 0). 13. The formation surface (1) of the layer formation surface (12).
2a, 12b, 12c) are formed on the stepped surface having a larger diameter toward the outflow port (14a), and the first forming surface forming the layer body (A) inside the layered body (D). The nozzle (8) is configured to inject the molding material in order from (12a), wherein the nozzle (8) is configured to inject the molding material. Alternatively, the molding machine according to claim 12. 14. A passage (11) communicating with an outer surface (12F ₂ ) of the layer forming surface (12) is formed tangentially to a peripheral surface of the outer surface (12F ₂ ). The molding machine according to claim 6 or 7, characterized in that: 15. A narrowing portion (19) having a tapered shape on the united surface (14) and a gap gradually decreasing toward the outlet (14a). Or claim 7 or claim 8 or claim 9 or claim 10 or claim 11 or claim 12 or claim 1
The molding machine according to claim 3 or 14. 16. The molding device (30) has a molding surface (38) surrounding the parison (E) extruded from the die head (10), and seals a peripheral edge (G) of the tip of the parison (E). A forming die (31) having a holding portion (36) for holding and holding it in a bag shape when the die is closed; and a molding die (31) arranged in the parison (E) in a molding surface (38) of the molding die (31). A fluid discharge mandrel (34) for blow molding in cooperation with said molding surface (38). The molding machine according to claim 11, claim 12, claim 13, claim 14, or claim 15. 17. A molding material of different color or different material (X,
Y, Z) is supplied to each of the injection units (1a, 1b, 1c) separately for each type, and each of the injection units (1a, 1b, 1c)
The injection amount of the molding material is continuously increased / decreased periodically from each of the nozzles (8a, 8b, 8c) to inject the molding material onto the layer forming surface (12) of the die head (10), and the layer bodies (A, B,
C) and forming a parison (E) from the outflow port (14a) while bonding the layer bodies (A, B, C) to the bonding layer interface (F) by the united formation surface (14). The parison (E) is formed on a molding surface (3) of a molding die (31).
8) A method for molding a laminated molded product, wherein the molding is performed by press-fitting to the molding surface (38) while being arranged in the mold. 18. A molding material of different color or different material (X,
Y, Z) is supplied to each of the injection units (1a, 1b, 1c) separately for each type, and each of the injection units (1a, 1b, 1c)
The injection amount of the molding material is periodically increased or decreased from each of the nozzles (8a, 8b, 8c) to inject the molding material onto the layer forming surface (12) of the die head (10) to form the layered body (D). Together with the layered body (D) to form a united surface (14)
While the joining layer interface (F) is joined by the
4a), a parison (E) is formed, and then the parison (E) is arranged in a molding surface (38) of the molding die (31), and a tip peripheral portion (E ₁ ) is held by a holding portion (36). When the mold (31) is sealed and held, it is formed into a bag when the mold is closed, and the mandrel (3) is attached to the bag-shaped parison (E).
A molding method characterized in that a fluid is sprayed from 4) to form a laminated molded article formed by the molding surface (38).