JPH04325216A - Resin-integrally connecting method to skin and injection molding device of lateral type used therefor - Google Patents

Abstract

PURPOSE:To apply the injection molding device of lateral type to the integral connection of thermoplastic resin to skin. CONSTITUTION:A female mold 45 is brought in contact with a core mold 49, and a skin H is nipped between both molds, and then thermoplastic resin is injected from the nozzle on the tip of a cylinder, and an injecting port 57a is opened by a shut off rod 59. Thermoplastic resin 80 is injected into a resin well 53, and it is kept as it is. Next, the clamping of the mold moves further the female mold and the core mold in the state where they are brought in contact with each other, and the injecting port 57a is closed by the shut off rod 59, whereby the thermoplastic resin 80 is extruded in the space H0 into which resin is to be injected, and the thermoplastic resin 80 in the resin well 53 is cut off.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention utilizes a female mold and a core mold having cavities arranged horizontally opposite each other to integrate the skin with an injected thermoplastic resin. The present invention relates to a resin integration method and a horizontal injection molding device used therein.

0002

[Prior Art] Conventionally, this type of method for integrating resin into the epidermis has been proposed, for example, in JP-A No. 59-9054, in which a thermoplastic resin (hereinafter simply referred to as resin) is integrated into the epidermis. ), the mold is clamped to hold the skin, and the resin is poured out in this order to integrate the skin and the resin. By flushing away the thermoplastic resin after mold clamping, the resin is prevented from spilling out.

0003

[Problems to be Solved by the Invention] However, in the conventional method of integrating resin into the skin, the resin is charged before the skin is held between the molds, and therefore the resin must be temporarily held. Therefore, the direction in which the molds face each other is the vertical direction. Therefore, the direction of movement of the mold is also the vertical direction.

On the other hand, there is a demand for expanding the use of horizontal injection molding apparatuses for producing injection molded products of thermoplastic resin. However, since the above-mentioned conventional method is subject to the above-mentioned restriction on the moving direction of the mold, it has not been possible to apply this horizontal injection molding apparatus to the integration of thermoplastic resin into the skin.

The present invention has been made to solve the above-mentioned problems by applying a horizontal injection molding device to the integration of the skin and the thermoplastic resin, and by applying a horizontal injection molding device to the integration of the skin and the thermoplastic resin. The purpose is to provide suitable injection molding equipment.

[0006]

Means for Solving the Problems The procedure adopted by the present invention to achieve this object is to use a sample mold and a core mold disposed horizontally opposite each other to form a skin and an injected heat. A method for integrating a resin into a skin by integrating a plastic resin into a skin, the method comprising moving the female mold and/or the core mold along a horizontal direction to bring the female mold and the core mold into close contact with each other and sandwiching the skin. , while maintaining a predetermined gap between the mold surface of the mold surface of the side of the female mold and the core mold having a through hole for injecting the thermoplastic resin and the skin; a step of sandwiching the epidermis between them; and a step of inserting the resin into the resin reservoir formed by the through hole and the end face of the plunger slidably disposed in the through hole through the resin introduction path provided in the plunger. and extruding the thermoplastic resin in the resin reservoir into the predetermined gap through relative movement between the plunger and the mold on the side having the through hole; The gist thereof is to close the resin introduction path through driving a conduit closing mechanism near the end face of the plunger.

[0007] Furthermore, the horizontal injection molding apparatus used in the above invention has a female mold and a core mold that are arranged horizontally opposite to each other, and the female mold and/or the core mold are moved in the horizontal direction. a contact means for forming a predetermined gap between the mold surface of the female mold and the mold surface of the core mold and bringing the two molds into close contact;
The mold on the thermoplastic resin injection side of the core mold or the female mold is provided with a through hole that penetrates in the horizontal direction up to the predetermined gap, and a through hole that is slidably disposed in the through hole; a plunger having an end surface that forms a resin reservoir with the peripheral wall of the through hole when the female mold and the core mold are brought into close contact with each other by a contact means; a resin injection nozzle provided on the plunger and the resin reservoir; and a resin injection means for injecting the thermoplastic resin from the resin injection nozzle into the resin reservoir through the resin introduction passage, and after the completion of injection by the resin injection means, the contact means mold clamping means for relatively moving the integrated mold and the plunger to narrow the gap between the end surface of the plunger and the opposing mold to clamp the mold; The gist thereof is that the resin introduction passage closing means is provided near the end face and operates in accordance with the operation of the mold clamping means to close the resin introduction passage.

[0008]

[Function] The method of integrating the resin into the skin described above is to first move the female mold and/or core mold along the horizontal direction so that the female mold and the core mold come into close contact with each other, and then Between the female mold and the core mold while maintaining a predetermined gap between the mold surface of the mold on the side that has the through hole for injecting the thermoplastic resin and the skin that was set before the two molds were brought into close contact. sandwich the epidermis.

[0009] A resin reservoir provided in the plunger is formed by a through hole penetrating the mold on the injection side of the thermoplastic resin and an end face of the plunger slidably disposed in the through hole. Thermoplastic resin is injected through the resin introduction path, and the thermoplastic resin is held in this resin reservoir. At this time, even if the injected thermoplastic resin directly hits the epidermis,
Since the skin itself is sandwiched between the female mold and the core mold, breakage (tearing) of the skin and careless swelling and depression of the skin are avoided.

[0010] Thereafter, the thermoplastic resin in the resin reservoir is extruded into a predetermined gap through relative movement between the plunger and the mold on the side having the through hole, and a conduit closing mechanism near the end face of the plunger is activated. By closing the resin introduction path through the drive of Cut away from thermoplastic.

In this case, the extrusion of the thermoplastic resin and the closing of the resin introduction passage may be performed simultaneously or sequentially with a predetermined time difference.

[0012] The horizontal injection molding device used in this method of integrating resin into the skin molds the female mold and/or
Alternatively, the core mold facing the female mold is moved in the horizontal direction to bring the female mold and the core mold into close contact with each other with a predetermined gap formed between the mold surfaces of both molds. At this time, if a skin has been placed between the female mold and the core mold before the two molds are brought into close contact with each other, a predetermined gap will be formed along this skin, and this placed skin will be placed between the female mold and the core mold. It is held between the mold and the mold.

[0013] When the female mold and the core mold are brought into close contact with each other by the adhesion means and the skin is sandwiched, the mold is slidably inserted into the peripheral wall of the through hole passing through the mold on the injection side of the thermoplastic resin and into this through hole. A resin pool is formed with the end face of the arranged plunger. Then, the resin injection means injects the thermoplastic resin from the resin injection nozzle into the resin reservoir through the resin introduction path of the plunger, and the thermoplastic resin is retained in the resin reservoir. At this time, even if the injected thermoplastic resin collides directly with the skin, the skin itself is sandwiched between the female mold and the core mold, so damage to the skin (tear) or inadvertent swelling of the skin may occur. and cave-ins are avoided.

When the injection of the thermoplastic resin by the resin injection means is completed, the mold and the plunger, which are integrated by the close contact means, are relatively moved by the mold clamping means, and the end face of the plunger on the resin reservoir side and the plunger are penetrated. Mold clamping is performed to narrow the gap between the mold having holes and the opposing mold, and the thermoplastic resin in the resin reservoir is pushed out into a predetermined gap along the skin.

As a result, the skin and the injected thermoplastic resin are integrated. Further, in conjunction with the operation of the mold clamping means, for example, the introduction passage closing means is operated simultaneously with the mold clamping means or before and after the mold clamping means, thereby closing the resin introduction passage near the end face of the plunger. , the extruded thermoplastic resin is separated from the thermoplastic resin in the resin introduction path.

[0016]

[Example] Next, a preferred example of the method of integrating resin into the epidermis according to the present invention will be explained based on the drawings. Figure 1
1 is a schematic configuration diagram showing a horizontal injection molding apparatus according to an embodiment, and shows a state in which a skin H is set.

The injection molding apparatus 1 includes an injection molding machine main body 3 for horizontally injecting thermoplastic resin, a molding die 5, and an electronic control device 7 as main components. Note that this electronic control device 7 is a so-called programmable controller that sequentially drives devices to be controlled according to a ladder program created in advance. Further, since the injection molding machine main body 3 itself is not directly related to the gist of the present invention, the explanation thereof will be limited to an overview.

The injection molding machine main body 3 is equipped with a screw 13 that is slidably and rotatably inserted into a horizontally installed cylinder 11, and this screw 13 is rotated through a drive system (not shown). - Rotationally driven and slidably driven in the axial direction by the sliding drive device 15.

The rotation/sliding drive device 15 rotates the screw 13 by transmitting the driving force of a motor (not shown) to the screw 13 via a spur gear or the like. At this time, the thermoplastic resin is introduced into the cylinder 11 through the introduction port 25 attached to the cylinder 11, thereby filling the cylinder 11 with the thermoplastic resin. As a result, the filled thermoplastic resin is melted by the heating device attached to the cylinder 11. Furthermore, the rotation/sliding drive device 15 supplies and discharges cylinder oil to a piston (not shown) provided at the rear end of the rod of the screw 13, and drives the screw 13 in the direction of the arrow a to open the nozzle 41 at the tip of the cylinder 11. The molten thermoplastic resin is injected from the injector.

The molding die 5 includes a female mold 45 that is movable in the horizontal direction (direction of arrow b in the figure) and has a cavity 45a, and a slide mold 47 that is movable in the direction of arrow c in the figure.
a, 47b, and a core mold 49 which has a core portion 49a inserted into the cavity 45a of the female mold 45 and is movable together with the female mold 45 in the direction of arrow b in the figure.

This core mold 49 is provided with a through hole 49b bored in the horizontal direction at its center. The plunger 51 with the protrusion 51a fitted into the through hole 49b is fixed to the main body side wall 1a of the injection molding apparatus 1. Therefore, the core mold 49 slides along the convex portion 51a of the plunger 51.

The end surface 51b of the plunger 51 and the peripheral wall of the through hole 49b of the core mold 49 form a resin pool 5.
3 is formed.

Further, a spring 54 that urges the core mold 49 to the left in the figure and a stopper 55 that defines the bottom dead center of the core mold 49 are arranged between the plunger 51 and the core mold 49. .

Further, the plunger 51 is provided with a resin introduction passage 57 passing through its center and communicating with the main body side wall 1a. A shutoff rod 59 that opens and closes the injection port 57a of the passage 57 as will be described later is incorporated so as to be movable in the horizontal direction (in the direction of arrow d in the figure). Note that this plunger 51 is constantly heated by a heating device (not shown) so as not to harden the thermoplastic resin in the resin introduction path 57.

The resin introduction passage 57 and the nozzle 41 at the tip of the injection molding machine main body 3 described above are communicated through a connecting passage 61, and the thermoplastic resin injected from the nozzle 41 is transferred to the resin via the connecting passage 61. It reaches the introduction path 57 and the resin introduction path 57
The resin is injected into the resin reservoir 53 from the injection port 57a.

The shut-off rod 59 is integrated with a piston 65 of a hydraulic cylinder 63 at its rear end, and cylinder oil in hydraulic chambers 67, 69 of this hydraulic cylinder 63 is supplied and discharged via control valves 71, 73. As a result, it moves within the resin introduction path 57 in the direction of arrow d in the figure. Therefore, as shown in FIG. 2, which is an enlarged view of the vicinity of the injection port 57a of the resin introduction path 57, when the shutoff rod 59 moves to the right in the drawing and the tapered tip 59a leaves the injection port 57a, as shown in FIG. The thermoplastic resin is injected from the injection port 57a as shown by arrow e.

When the female mold 45 and the slide molds 47a and 47b of the molding die 5 move in the directions of arrows b and c in the figure, respectively, a female mold that drives a hydraulic cylinder (not shown) or a ball screw and its drive motor, etc. The mold drive device 75 and slide mold drive device 77 operate. In other words, the hydraulic cylinders etc. perform predetermined movements by each of these drive devices, and the female mold 45 moves in the direction of the arrow b in the figure, and the slide mold 47a
, 47b move in the direction of arrow c in the figure.

Next, the electronic control device 7 that controls the injection molding apparatus 1 described above will be explained. This electronic control device 7 includes a position detection sensor (not shown) for detecting the origin position of the female mold 45, the contact position of the mold, the mold clamping position, etc., which will be described later. An operation panel 79 for instructing the start of etc. is connected, and detection signals from each of the sensors and command signals from the operation panel 79 are input to the electronic control unit 7.

The electronic control device 7 includes a CPU 7a, a ROM 7
It is configured as a logic operation circuit centering around a RAM 7c, a timer 7d, and an input/output port 7f connected to these via a common bus 7e. The input/output port 7f is used for supplying and discharging cylinder oil of each drive device such as the sample type drive device 75, slide type drive device 77, rotary/sliding drive device 15, etc. and the hydraulic cylinder 63 described above. control valves 71, 73, etc. are connected.

Next, FIGS. 3 and 4 show the process of integrating resin into the skin H using the injection molding apparatus 1 having such a configuration.
Explain using.

FIG. 3 is a flow chart showing the resin integration process. As shown in FIG. 3, first, the female mold 45 and slide molds 47a and 47b of the molding die 5 are
When the skin H is at its original position as shown in FIG. 1, the skin H, which has been previously shaped into the shape shown in FIG. 1, is set in the core part 49a of the core mold 49 (step 1). In this case, the epidermis H is heated if necessary. Further, the skin H is shaped in consideration of its shape so that a resin injection space H0 having a predetermined gap can be formed between the skin H and the core portion 49a.

[0032] This resin injection space H0 is located at the epidermis H0.
It is formed in consideration of the thickness of the thermoplastic resin to be integrated with the thermoplastic resin, and has a width (horizontal direction) of about 10 to 50 mm.

After the skin H is set in this manner, step 2, which will be explained below, is carried out by pressing a start switch (not shown) on the operation panel 79. That is, the electronic control device 7 outputs a drive signal to the female mold drive device 75 and the slide mold drive device 77 to move the female mold 45 to the right and move the slide molds 47a and 47b to the female mold 4.
It moves in the direction of arrow c in FIG. 1 in conjunction with the movement of 5. In this way, as shown in FIG. 4(a), the female mold 45 and the core mold 49 are brought into close contact with each other with the slide molds 47a and 47b interposed, and the skin H is sandwiched between the female mold 45 and the core mold 49. .

At this time, the end-of-movement position (close contact position) of the female die 45 is determined by a position detection sensor that detects the end-of-movement position in step 2, and a detection signal from this sensor is sent to the electronic control unit 7. When input, the electronic control device 7 determines whether the female mold 45 has reached the movement end position in step 2. Then, when the female mold 45 reaches the movement end position in step 2, a stop signal is output from the electronic control device 7 to the female mold drive device 75, and the female mold 45 stops moving to the right.

The end position of the movement of the female mold 45 in step 2 is set at a position where the spring 54 is slightly compressed when the female mold 45 and the core mold 49 sandwich the skin H as described above. ing.

When the above step 2 is completed, the electronic control device 7
A drive signal is outputted to the rotation/sliding drive device 15, the control valves 71, 73 of the hydraulic cylinder 63, etc., and step 3 of injecting the thermoplastic resin is performed as follows.

The rotation/sliding drive device 15 is the electronic control device 7
Upon receiving the drive signal from the injection molding machine body 3, the injection molding machine body 3 rotates the screw 13 in the cylinder 11, and
Move the screw 13 to the nozzle 41 side and remove the cylinder 1.
The molten thermoplastic resin is injected into the connecting path 61 from the nozzle 41 at the tip of the nozzle 1 .

On the other hand, the control valves 71 and 73 of the hydraulic cylinder 63 that receive a drive signal from the electronic control device 7 are driven, and cylinder oil is supplied to the hydraulic chamber 67 and cylinder oil in the hydraulic chamber 69 is discharged. The shutoff rod 59 is
As shown in (b), move in the direction of arrow d1 in the figure,
As shown in FIG. 2, the injection port 57a is opened.

In this way, the nozzle 41 of the cylinder 11 and the injection port 57a of the plunger 51 communicate with each other.
Since a is opened, the thermoplastic resin injected from the nozzle 41 passes through the resin introduction path 57 and the connection path 61 while being pressurized, and is injected into the resin reservoir 53 from the injection port 57a. As a result, the injected thermoplastic resin 80 is temporarily held in the resin reservoir 53.

At this time, from the injection port 57a, 40 to 80
Kg/cm2 nozzle internal pressure (preferably 80 Kg
The speed at which the screw 13 moves toward the nozzle 41 is adjusted so that the thermoplastic resin is injected under a pressure of about 1/2 cm2. The setting of this nozzle internal pressure depends on the type of thermoplastic resin used, the volume of the resin reservoir 53,
It is determined by considering the inner diameters of the resin introduction path 57 and the connection path 61, their path lengths, etc.

When the above step 3 is completed, the electronic control device 7
A drive signal is output to the ratchet type drive device 75, the control valves 71, 73 of the hydraulic cylinder 63, etc., and Step 4 described below is performed. That is, while keeping the female mold 45 in close contact with the core mold 49, as shown in FIG.
1 direction to perform mold clamping, and based on the supply and discharge of cylinder oil to the hydraulic cylinder 63 via the control valves 71 and 73, the shutoff rod 59 is moved as shown in FIG. 4(c). Then, the injection port 57a is shut off by moving in the direction of arrow d2 in the figure.

By this mold clamping, the core mold 49 moves along the convex portion 51a of the plunger 51 in the mold clamping direction (arrow b1
direction), the thermoplastic resin 80 held in the resin reservoir 53 moves toward the end surface 51 of the plunger 51.
b, and is pushed out in the anti-mold clamping direction into the resin injection space H0 between the skin H and the core portion 49a. As a result, this resin injection space H0 is filled with resin reservoir 53.
It is filled with thermoplastic resin 80 that was held in the container.

On the other hand, by shutting off the injection port 57a, the thermoplastic resin 80 in the resin reservoir 53 and the thermoplastic resin remaining in the resin introduction path 57 are separated from the thermoplastic resin near the end surface 51b of the plunger 51. It is cut away at the injection port 57a.

The moving speed of the female mold 45 during the mold clamping described above is set at 25 mm/sec in order to prevent the thermoplastic resin 80 in the resin reservoir 53 from curing during extrusion. The above speed is preferable. If the above-mentioned moving speed is lower than this, the thermoplastic resin will be partially cured and there will be areas where the resin does not reach, which may impede the product design.

The movement end position (mold clamping completion position) of the female mold 45 in this step 4 is defined by the stopper 55, and the arrival of the female mold 45 at this movement end position means the position of the mold clamping completion position. Detected by a detection sensor. When the detection signal from this position detection sensor is input to the electronic control device 7, the electronic control device 7 starts the timer 7d, and the mold clamping state is maintained while the timer 7d measures a predetermined time. maintain.

While this mold clamping state is maintained, cooling is performed to harden the thermoplastic resin 80 (step 5), and the thermoplastic resin 8 filled in the skin H and the resin injection space H0 is heated.
0 are integrated.

When the timer 7d measures a predetermined time, step 5 is completed, and step 6 of releasing the skin from the mold is performed as follows. That is, the electronic control device 7 outputs a drive signal to the female die drive device 75 to move the female die 45 (c
) from the mold clamping completion position shown in ) to the origin position shown in FIG. 1 . Then, the core mold 49, which is biased by the spring 54 in the direction opposite to the arrow b1 in FIG. The plunger 51 slides along the convex portion 51a of the plunger 51, following the female mold 45. At this time, the electronic control device 7 is also connected to the slide type drive device 77.
Since a drive signal is output from the slide mold 47a, 47b, as the female mold 45 moves, the slide molds 47a and 47b also return to their original positions in FIG.

In this way, when the female mold 45 and the core mold 49 return to their original positions shown in FIG. 1, the two molds are separated, and the skin H integrated with the thermoplastic resin 80 is released from the mold.

As explained above, the method of integrating the resin into the skin according to this embodiment is as follows: After the female mold 45 and the core mold 49 are brought into close contact with each other with the slide molds 47a and 47b interposed between them to sandwich the skin H, The thermoplastic resin 80 is injected into the resin reservoir 53 from the injection port 57a, the thermoplastic resin 80 is temporarily held in the resin reservoir 53, and the molds are clamped while the female mold 45 is kept in close contact with the core mold 49. And core type 49
The thermoplastic resin 80 held in the resin reservoir 53 is transferred between the skin H and the core portion 49a by the end surface 51b of the plunger 51 through sliding in the mold clamping direction along the convex portion 51a of the plunger 51. into the resin injection space H0. As a result, the thermoplastic resin 80 is evenly distributed along the epidermis H, and the two are integrated.

Further, by shutting off the injection port 57a with the shutoff rod 59, the extruded thermoplastic resin 80 is separated from the thermoplastic resin remaining in the resin introduction path 57 of the plunger 51.

That is, according to the method of integrating resin into the skin according to this embodiment, the thermoplastic resin 80 is injected with the skin H being sandwiched between the female mold 45 and the core mold 49, and then By extruding the thermoplastic resin 80 by mold clamping and cutting off the thermoplastic resin 80 by shutting off the mold, defects in product design due to breakage (tearing) of the skin, careless swelling or depression of the skin, and problems after curing can be avoided. It is possible to apply a horizontal injection molding apparatus to the integration of the skin and the thermoplastic resin while avoiding disturbances on the surface of the thermoplastic resin 80.

By the way, it is also possible to improve the method of integrating resin into the epidermis proposed in JP-A-59-9054 as follows. For example, as shown in FIG. 5, a female mold 100 and a core mold 102 are placed horizontally opposite each other, a skin 104 is set in the core mold 102, and the skin 104 is set in the hole 106 of the core mold 102. and nest 10
8 to form a closed space 109. Then, the thermoplastic resin 112 is put into the sealed space 109 and the sealed space 1
After holding the thermoplastic resin 112 in the mold 09, the mold is clamped, and the thermoplastic resin 112 is bonded to the skin 104 and the core mold 102.
extrude between the mold surface and the mold surface.

Therefore, if the skin 104 is not set in the core mold 102 immediately after the thermoplastic resin 112 is added, the thermoplastic resin 112 may flow out, and the skin 1
04 and the thermoplastic resin 112 cannot be integrated, resulting in poor molding reliability. On the other hand, according to the method of integrating resin into the epidermis according to this embodiment, the injected thermoplastic resin 80 is inevitably held in the resin reservoir 53, so that
Molding reliability can be improved.

Furthermore, according to the method of integrating the resin into the skin according to this embodiment, the moving speed of the female mold 45 when clamping the mold is set to a speed of 25 mm/sec or more, so that the inside of the resin reservoir 53 is It is possible to prevent the thermoplastic resin 80 from curing during extrusion, and it is possible to prevent defects in product design due to partial curing of the thermoplastic resin.

On the other hand, according to the horizontal injection molding apparatus 1 of this embodiment, each treatment (
The horizontal injection molding apparatus 1 of this embodiment can faithfully carry out the steps (adhesion of the mold, skin clamping, injection, mold clamping/shutoff) in accordance with the processing procedure. This injection molding equipment is suitable for integration with

Although one embodiment of the present invention has been described above, the present invention is not limited to this embodiment in any way, and can be implemented in various ways without departing from the gist of the present invention. Of course.

For example, although the mold clamping and shutoff are performed simultaneously in the same process, the mold clamping and shutoff may be performed in separate processes. In this case, mold clamping and shutoff may be sequentially performed in this order or in the reverse order with a predetermined time difference, for example, a time difference of 0 to 5 seconds.

[0058] Furthermore, the skin on which the thermoplastic resin is integrated is not limited to a single layer, but may be a multilayer skin that has a cushion layer (fabric layer, leather layer) on the side where the thermoplastic resin is integrated. Of course, it can be applied to Incidentally, examples of the final product molded by the method of integrating the skin and the thermoplastic resin in this embodiment and the injection molding apparatus used therefor include a console door of a vehicle, a pillar garnish, and the like. Furthermore, examples of the thermoplastic resin to be injected include polypropylene and ABS resin.

Furthermore, when integrating the thermoplastic resin on the outside of the curved skin (the female mold side of the skin H in this example), a female mold with through holes and a core mold without through holes are used. It is sufficient to use the female mold 45 and core mold 49 in FIG.

[0060]

Effects of the Invention As detailed above, according to the method of integrating resin into the skin according to the present invention, the thermoplastic resin is injected while the female mold and the core mold are in close contact with each other and the skin is sandwiched between them. After that, by extruding the thermoplastic resin by clamping the mold and cutting off the thermoplastic resin by closing the resin introduction path, there are many defects in the product design due to damage (tearing) of the skin and careless swelling and depression of the skin. The thermoplastic resin can be integrated into the epidermis while avoiding disturbance of the surface of the thermoplastic resin after curing. As a result, it is possible to apply a horizontal injection molding apparatus to the integration of the skin and the thermoplastic resin.

According to the horizontal injection molding apparatus of the present invention, each process in the method of integrating resin into the skin (adhering the mold, clamping the skin, injection, mold clamping/shutoff) is carried out in the order according to the processing procedure. This can be done faithfully to integrate the skin and thermoplastic. As a result, the horizontal injection molding apparatus of the present invention becomes an injection molding apparatus suitable for a method of integrating resin into a skin.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of a horizontal injection molding apparatus 1 according to an embodiment.

FIG. 2 is an enlarged view of the vicinity of the injection port 57a of the resin introduction path 57 in the horizontal injection molding apparatus 1 of the embodiment.

FIG. 3 is a flowchart showing a step of integrating resin into the skin H by the injection molding apparatus 1.

FIG. 4 is an explanatory diagram for explaining this resin integration step.

FIG. 5 is an explanatory diagram for explaining a conventional method and device for integrating resin into the epidermis.

[Explanation of symbols]

1 Injection molding equipment 3 Injection molding machine body 5 Molding mold 7 Electronic control device 15 Rotating/sliding drive device 45 Female type 45a Cavity 49 Core type 49a Core part 49b Through hole 51 Plunger 51b End face 53 Resin pool 57 Resin introduction path 57a Injection port 59 Shut-off rod 63 Hydraulic cylinder 75 Female type drive device H Epidermis H0 Resin injection space

Claims (2)

[Claims] 1. A method for integrating a resin into a skin by using a sample mold and a core mold that are arranged horizontally opposite each other to integrate the skin and an injected thermoplastic resin, the method comprising:
When moving the female mold and/or core mold horizontally to bring the female mold and core mold into close contact with each other and sandwiching the skin, one of the female mold and the core mold is used for injecting the thermoplastic resin. a step of sandwiching the skin between the female mold and the core mold while maintaining a predetermined gap between the mold surface of the mold on the side having the through hole and the skin; a step of injecting the thermoplastic resin into a resin reservoir formed by an end surface of a slidably arranged plunger through a resin introduction path provided in the plunger; extrusion of the thermoplastic resin in the resin reservoir into the predetermined gap through relative movement with the mold on the side having a A method for integrating resin into the epidermis, comprising the step of: closing an introduction path. 2. A horizontal injection molding apparatus for use in the method for integrating resin into a skin according to claim 1, comprising a female mold and a core mold disposed opposite to each other in the horizontal direction, and wherein said female mold and/or a contact means for moving the core mold in a horizontal direction to form a predetermined gap between the mold surface of the female mold and the mold surface of the core mold and bringing the two molds into close contact; The mold on the thermoplastic resin injection side of the mold is provided with a through hole that penetrates in the horizontal direction up to the predetermined gap, and a through hole that is slidably disposed in the through hole, and that the female a plunger having an end surface that forms a resin reservoir with the peripheral wall of the through hole when the mold and the core mold are brought into close contact; and a resin provided on the plunger that communicates between a resin injection nozzle and the resin reservoir. an introduction path, a resin injection means for injecting the thermoplastic resin from the resin injection nozzle into the resin reservoir via the resin introduction path, and after the completion of injection by the resin injection means, a mold that is integrated by the contact means. mold clamping means for moving the mold and the plunger relatively to narrow the gap between the end surface of the plunger and the opposing mold and clamping the mold; and a mold clamping means provided near the end surface of the plunger. 1. A horizontal injection molding apparatus, comprising: an introduction passage closing means which is operated in accordance with the operation of the mold clamping means to close the resin introduction passage.