JP2010017980A - Molten resin supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To supply a molten resin into a movable mold efficiently. <P>SOLUTION: The molten resin supply device has a supply source connection flow passage forming member 10, a first flow passage forming pipe 30, a second flow passage forming pipe 50, a movable mold connection flow passage forming member 70, a first joint 20 mounted between the supply source connection flow passage forming member 10 and the first flow passage forming pipe 30 to connect them so that the first flow passage forming pipe 30 can swing around the downstream end of the supply source connection flow passage forming member 10 as a center in a vertical direction, a second joint 40 mounted between the first flow passage forming pipe 30 and the second flow passage forming pipe 50 to joint them so that the second flow passage forming pipe 50 can swing around the downstream end of the first flow passage forming pipe 30 as a center in the vertical direction, and a third joint 60 mounted between the second flow passage forming pipe 50 and the movable mold connection flow passage forming member 70 to joint them so that the second flow passage forming pipe 50 can swing around the upstream end of the movable mold connection flow passage forming member 70 as a center relatively in the vertical direction. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a molten resin supply apparatus that supplies a molten resin from a resin supply source to a resin molding apparatus.

  The resin molding apparatus has a pair of molds (generally, a fixed mold and a movable mold). Then, molten resin is supplied between both molds, and the resin is molded by cooling and solidifying.

In order to supply the molten resin between both molds, first, the molten resin may be supplied to one mold.
In that case, there are a case where it is supplied to a fixed mold and a case where it is supplied to a movable mold.

When the resin is supplied to the fixed mold, it is sufficient that the resin supply source and the fixed mold are connected by a position-fixed supply pipe (nozzle of the injection machine) (see Patent Document 1).
On the other hand, even when the resin is supplied to the movable mold, conventionally, a position-fixed supply pipe is used.
However, in that case, each time resin is supplied to the movable mold, the movable mold needs to be positioned at a predetermined position (that is, a position corresponding to the downstream end of the position-fixed supply pipe). It has become a bottleneck in improving the efficiency of.

Here, if the resin supply source is connected to the movable mold with a flexible hose such as rubber, the resin can be supplied to the movable mold regardless of the position of the movable mold. It is thought that it becomes.
However, the resin in the molten state has a high temperature, and the hose cannot withstand the high temperature. Therefore, the hose cannot be used.
JP 2007-313720 A

  An object of the present invention is to provide an apparatus that can efficiently supply a molten resin to a movable mold.

  In order to solve the above problems, the invention according to claim 1 is a molten resin supply for supplying a molten resin to a movable mold of a resin molding apparatus in which at least one of a pair of molds is a movable mold. A device, which is connected to a resin supply source and has a flow path through which the resin flows, and a flow path through which the resin flows, provided on the downstream side of the supply source connection flow path formation member A first flow path forming pipe, a second flow path forming pipe provided on the downstream side of the first flow path forming pipe and having a flow path through which the resin flows, and a downstream side of the second flow path forming pipe A movable connection flow path forming member connected to the movable mold, and between the supply source connection flow path forming member and the first flow path forming pipe. Provided, and the first flow path forming pipe is a downstream end of the supply source connection flow path forming member or A first joint connecting the supply source connection flow path forming member and the first flow path forming pipe so as to be swingable along a moving direction of the movable type around the vicinity; and the first flow Provided between a path forming pipe and the second flow path forming pipe, the second flow path forming pipe being along the moving direction of movement with the downstream end of the first flow path forming pipe or the vicinity thereof being the center. A second joint that connects the first flow path forming pipe and the second flow path forming pipe, the second flow path forming pipe, and the movable connection flow path forming member. So that the second flow path forming tube can swing relatively along the moving direction of the movable type around the upstream end of the movable connection flow path forming member or the vicinity thereof. A molten resin supply apparatus having a third joint connecting the second flow path forming tube and the movable connection flow path forming member.

In this molten resin supply apparatus, the molten resin flowing into the supply source connection flow path forming member from the resin supply source passes through the supply source connection flow path forming member, the first flow path forming pipe, and the second flow path forming pipe. The mobile connection channel forming member supplies the mobile mold.
In this molten resin supply device, the supply source connection flow path forming member and the first flow path formation pipe are rotatably connected at the first joint, and the first flow path formation pipe is formed as the supply source connection flow path formation. It can swing along the moving direction of movement around the downstream end of the member or its vicinity.
In addition, the first flow path forming tube and the second flow path forming tube are rotatably connected at the second joint, and the second flow path forming tube is centered on the downstream end of the first flow path forming tube or the vicinity thereof. And can be swung along the moving direction of the movable type.
In addition, the second flow path forming tube and the movable connection flow path forming member are pivotally connected at the third joint, and the second flow path forming tube is at the upstream end of the movable connection flow path forming member or in the vicinity thereof. Can be relatively swung along the moving direction of movement.
From the above, in this molten resin supply apparatus, even if the position and posture of the supply source connection flow path forming member are fixed, the movable connection flow path forming member can be moved without changing its posture. It is possible to move along the moving direction.
For this reason, in this molten resin supply apparatus, even if the movable mold is located at any position, and whether the movable mold is stopped or moving, from the position-fixed resin supply source, It is possible to supply molten resin to the movable mold.
For this reason, in this molten resin supply apparatus, it is possible to supply molten resin to the movable mold without stopping the movable mold at a predetermined position, and the efficiency of resin molding can be improved.

  The invention according to claim 2 is a molten resin supply device for supplying a molten resin to a movable mold of a resin molding apparatus that is a movable mold in which at least one of a pair of molds moves up and down. A supply source connection flow path forming member connected to a supply source and having a flow path through which the resin flows, and a first flow path provided on the downstream side of the supply source connection flow path forming member and having a flow path through which the resin flows A forming pipe, a second flow path forming pipe provided on the downstream side of the first flow path forming pipe and having a flow path through which the resin flows, and a downstream side of the second flow path forming pipe, the resin A movable connection flow path forming member connected to the movable mold, and provided between the supply source connection flow path forming member and the first flow path forming pipe, The flow path forming pipe is vertically centered around the downstream end of the supply source connection flow path forming member or its vicinity. A first joint that connects the supply source connection flow path forming member and the first flow path forming pipe, the first flow path forming pipe, and the second flow path so as to be swingable along a direction. The first flow path is provided between the first flow path forming pipe and the second flow path forming pipe so that the second flow path forming pipe can swing along a vertical direction around the downstream end of the first flow path forming pipe or the vicinity thereof. A second joint that connects the path forming tube and the second channel forming tube; and the second channel forming tube provided between the second channel forming tube and the movable connection channel forming member. The second flow path forming tube and the movable connection flow path forming member so as to be relatively swingable along the vertical direction around the upstream end of the movable connection flow path forming member or the vicinity thereof. And a third joint that connects to the molten resin supply device.

  In the molten resin supply apparatus according to the present invention, the moving type moving direction is the vertical direction, and the effect of the contents in which the “moving type moving direction” in the invention according to claim 1 is replaced with the “vertical direction” can be obtained.

Next, an embodiment of the present invention will be described with reference to the drawings.
First, based on FIG. 3, the resin molding apparatus in which this molten resin supply apparatus is used is demonstrated.
The resin molding apparatus has an upper mold 110 and a lower mold 120.
The upper mold 110 is a fixed mold with a fixed position.
The lower mold 120 is a movable type, and is lowered by a mechanism (not shown) that is the lowest position (shown by a solid line in FIG. 3) and the highest position that is the highest position (shown by a two-dot chain line in FIG. 3). Up and down (moves along the vertical direction). A resin supply part (detailed illustration is omitted) is formed in the lower mold 120.
Then, a molten (high pressure) resin is supplied to the lower mold 120 (resin supply section), and the resin is guided to the mold surface (surface facing the upper mold 110) of the lower mold 120, and both molds 110, Molded between 120.

As shown in FIG. 1, the molten resin supply apparatus includes a supply source connection flow path forming member 10, a first joint 20, a first flow path forming pipe 30, a second joint 40, a second flow path forming pipe 50, a first It has three joints 60 and a movable connection flow path forming member 70. They are all made of metal.
The supply source connection flow path forming member 10, the first flow path forming pipe 30, the second flow path forming pipe 50, and the movable connection flow path forming member 70 are all disposed so as to extend in parallel in a plan view. Yes.

The supply source connection flow path forming member 10 has a tubular shape (that is, the flow path 11 is formed) and is connected to the resin supply source (nozzle) 100.
A bent flow path forming member 12 is fixed to the downstream end of the supply source connection flow path forming member 10. The bent flow path forming member 12 is formed with a flow path 13 that bends at a right angle.
The bent flow path forming member 12 (supply source connection flow path forming member 10) is connected to the first flow path forming tube 30 via the first joint 20.

As shown in FIG. 1, a flow path 31 is formed in the first flow path forming tube 30.
The first flow path forming tube 30 swings along the vertical direction at the first joint 20 around the downstream end (the bent flow path forming member 12) of the supply source connection flow path forming member 10 as follows. (See also FIGS. 4A-4C).
That is, as shown in FIGS. 1 and 2, the first joint 20 has a shaft-like member 22 and an annular member 26. The shaft-like member 22 is fitted to the annular member 26 (inside thereof) so as to be rotatable around its own axis.
As shown in FIG. 1, the shaft-shaped member 22 is fixed to the bent flow path forming member 12. The annular member 26 is fixed to the first flow path forming tube 30.

The flow path 11 of the supply source connection flow path forming member 10 (the flow path 13 of the bent flow path forming member 12) and the flow path 31 of the first flow path forming tube 30 are as follows in the first joint 20. Communicate.
As shown in FIG. 2, a channel 23 is formed along the axis of the shaft member 22 in a substantially half portion of the bent channel forming member 12 (see FIG. 1) side. A radially extending radial flow path 24 is formed from the downstream end of the flow path 23, and the downstream end of each radial flow path 24 is open on the outer peripheral surface of the shaft-shaped member 22.
The annular member 26 is formed with a circumferential groove portion 27 that makes a round of the inner peripheral surface thereof corresponding to the radiation flow path 24 (the downstream end thereof). In addition, the annular member 26 is formed with a flow path 28 that allows the circumferential groove portion 27 and the flow path 31 of the first flow path forming tube 30 to communicate with each other.

Returning to FIG. 1, a bent flow path forming member 32 is fixed to the downstream end of the first flow path forming pipe 30. The bent flow path forming member 32 is formed with a flow path 33 that bends at a right angle.
The bent flow path forming member 32 (first flow path forming pipe 30) is connected to the second flow path forming pipe 50 via the second joint 40.

A channel 51 is formed in the second channel forming tube 50.
The second flow path forming tube 50 swings along the vertical direction around the downstream end (the bent flow path forming member 32) of the first flow path forming tube 30 at the second joint 40 (FIG. 4A to FIG. 4). See also 4C).
As shown in FIG. 1, the second joint 40 also has the same structure as the first joint 20. That is, the second joint 40 also has a shaft-like member 42 and an annular member 46, and the shaft-like member 42 is fitted to the annular member 46 (inside thereof) so as to be rotatable around its own axis. .
The shaft-shaped member 42 is fixed to the bent flow path forming member 32. The annular member 46 is fixed to the second flow path forming tube 50.
The flow path 31 of the first flow path forming pipe 30 (the flow path 33 of the bent flow path forming member 32) and the flow path 51 of the second flow path forming pipe 50 communicate with each other at the second joint 40. The structure is the same as the structure of the first joint 20.

A bent flow path forming member 72 is fixed to the upstream end of the movable connection flow path forming member 70. The bent flow path forming member 72 has a flow path 73 that is bent at a right angle.
The second flow path forming tube 50 is connected to the bent flow path forming member 72 (movable connection flow path forming member 70) via the third joint 60.

The movable connection flow path forming member 70 has a tubular shape (that is, the flow path 71 is formed).
The second flow path forming tube 50 relatively swings along the vertical direction around the upstream end (the bent flow path forming member 72) of the movable connection flow path forming member 70 at the third joint 60 ( See also FIGS. 4A-4C).
As shown in FIG. 1, the third joint 60 also has the same structure as the first joint 20 and the second joint 40. That is, the third joint 60 also has a shaft-like member 62 and an annular member 66, and the shaft-like member 62 is fitted to the annular member 66 (inside thereof) so as to be rotatable around its own axis. .
The shaft-like member 62 is fixed to the bent flow path forming member 72. The annular member 66 is fixed to the second flow path forming tube 50.
The flow path 71 of the movable connection flow path forming member 70 (the flow path 73 of the bent flow path forming member 72) and the flow path 51 of the second flow path forming tube 50 communicate with each other at the third joint 60. The structure is the same as that of the first joint 20 and the second joint 40.

  As described above, in this molten resin supply apparatus, as shown in FIG. 1 and the like, the flow path 11, the flow path 31, the flow path 51, and the flow path 71 are in communication, and the supply source connection flow path forming member The molten resin that has flowed into 10 (the flow channel 11) flows out of the movable connection flow channel forming member 70 (the flow channel 71) through the flow channels 11, 31, 51.

Further, as described above with reference to FIGS. 1 and 4A to 4C, in the molten resin supply apparatus, each member can rotate at the first joint 20, the second joint 40, and the third joint 60. is there.
Thus, the first flow path forming tube 30 can swing along the vertical direction around the first joint 20 (near the upstream end of itself).
Further, the second flow path forming tube 50 can swing relatively along the vertical direction around the third joint 60 (near the downstream end of the second joint 60).
Further, the second flow path forming tube 50 can swing along the vertical direction around the second joint 40 (near the upstream end of itself), and conversely, the first flow path forming tube 30 is Thus, it can be said that the second joint 40 (in the vicinity of its downstream end) can be relatively swung along the vertical direction.

  In addition, as shown in FIGS. 1 and 4A to 4C, in this molten resin supply apparatus, the supply source connection flow path forming member 10 (the flow path 11) is constituted by three bent flow path forming members 12, 32, 72. ) And the movable connection flow path forming member 70 (the flow path 71) are on the same line or in a parallel positional relationship in which only the height is different.

Next, the effect of this molten resin supply apparatus is demonstrated.
As shown in FIGS. 1 and 3, etc., this molten resin supply apparatus has a supply source connection flow path forming member 10 connected to a resin supply source 100 and a movable connection flow path forming member 70 connected to a lower mold 120 (resin supply). Part) and used.
As a result, the molten resin supplied from the resin supply source 100 is supplied to the lower mold 120 via the molten resin supply device (through its flow paths 11, 31, 51, 71), and eventually both molds. 110, 120.

As shown in FIGS. 4A to 4C, in this molten resin supply device, the first joint 20, the second joint 40, and the third joint 60 can be rotated, and the first flow path forming tube 30 and the second joint can be rotated. Even if the flow path forming tube 50 can swing along the vertical direction (this is described above) and the supply source connection flow path forming member 10 which is the upstream end is fixed in position, A certain movable connection flow path forming member 70 is movable in the vertical direction without changing its posture.
In other words, the movable connection flow path forming member 70 follows the vertical movement of the lower mold 120 between the lowered position (FIG. 4A) and the raised position (FIG. 4C), and moves up and down without changing its posture. Move.
Therefore, in this molten resin supply apparatus, the molten resin is supplied to the lower mold 120 regardless of the height position of the lower mold 120 or the lower mold 120 is moving. be able to.
As described above, in this molten resin supply apparatus, it is possible to efficiently supply a molten resin to the lower mold 120 (resin molding apparatus), and efficiently mold the resin. It becomes possible.

  This molten resin supply device is suitable for supplying resin to the upper die when the resin is supplied to a resin molding device in which the lower die is a fixed die and the upper die is movable. .

  In addition, the above is merely one embodiment of the present invention, and it is needless to say that the present invention can be implemented in a mode in which various modifications are made based on the knowledge of those skilled in the art.

  For example, when the movable mold is used for a resin molding apparatus that moves in the horizontal direction (its movable mold), the first flow path forming tube (30) is connected to the first joint (20) (the upstream end of itself). The second flow path forming tube (50) is connected to the third joint (60) (near the downstream end of itself). The second flow path forming tube (50) is capable of swinging along a horizontal direction that is a moving type moving direction relative to the center, and the second flow path forming tube (50) is centered on the second joint (40) (near the upstream end of itself) The first flow path forming tube (30) is horizontally movable around the second joint (40) (near its downstream end). Can be swung).

It is sectional drawing which shows the molten resin supply apparatus of one Embodiment of this invention. A state virtually cut from a horizontal plane or a plane inclined from the horizontal and viewed from above is shown. It is sectional drawing which expands and shows a part of molten resin supply apparatus of one Embodiment of this invention. (A) is a cross-sectional view, (b) is a vertical cross-sectional view. It is a front view which shows the shaping | molding apparatus etc. in which the molten resin supply apparatus of one Embodiment of this invention is used. A state where the lower mold is located at the lowered position is indicated by a solid line, and a state where the lower mold is located at the raised position is indicated by a two-dot chain line. It is a figure which shows the effect | action of the molten resin supply apparatus of one Embodiment of this invention. A state where the lower mold is located at the lowered position is shown. It is a figure which shows the effect | action of the molten resin supply apparatus of one Embodiment of this invention. A state where the lower mold is located at a position between the lowered position and the raised position is shown. It is a figure which shows the effect | action of the molten resin supply apparatus of one Embodiment of this invention. The state where the lower mold is located at the raised position is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Supply source connection flow-path formation member 11 Flow path 20 1st joint 30 1st flow-path formation pipe 31 Flow path 40 2nd joint 50 2nd flow-path formation pipe 51 Flow path 60 3rd joint 70 Mobile connection flow path formation Member 71 Flow path 100 Resin supply source 110 Upper mold (fixed mold)
120 Lower mold (movable)

Claims (2)

A molten resin supply device for supplying a molten resin to a movable mold of a resin molding apparatus in which at least one of a pair of molds is a movable mold,
A supply source connection flow path forming member connected to a resin supply source and having a flow path through which the resin flows;
A first flow path forming pipe provided on the downstream side of the supply source connection flow path forming member and having a flow path through which the resin flows;
A second flow path forming pipe provided on the downstream side of the first flow path forming pipe and having a flow path through which the resin flows;
A movable connection flow path forming member provided on the downstream side of the second flow path forming pipe, having a flow path through which the resin flows, and connected to the movable mold;
It is provided between the supply source connection flow path forming member and the first flow path formation pipe, and the first flow path formation pipe moves around the downstream end of the supply source connection flow path formation member or its vicinity. A first joint connecting the supply source connection flow path forming member and the first flow path forming pipe so as to be swingable along the moving direction of the mold;
Provided between the first flow path forming pipe and the second flow path forming pipe, and the second flow path forming pipe is the movable type around the downstream end of the first flow path forming pipe or the vicinity thereof. A second joint connecting the first flow path forming tube and the second flow path forming tube so as to be swingable along the moving direction;
The second flow path forming pipe is provided between the second flow path forming pipe and the movable connection flow path forming member, and the second flow path forming pipe moves around the upstream end of the movable connection flow path forming member or the vicinity thereof. A molten resin supply device comprising: a third joint that connects the second flow path forming tube and the movable connection flow path forming member so as to be relatively swingable along a moving direction of the mold. A molten resin supply device that supplies a molten resin to a movable mold of a resin molding apparatus that is a movable mold in which at least one of a pair of molds moves up and down,
A supply source connection flow path forming member connected to a resin supply source and having a flow path through which the resin flows;
A first flow path forming pipe provided on the downstream side of the supply source connection flow path forming member and having a flow path through which the resin flows;
A second flow path forming pipe provided on the downstream side of the first flow path forming pipe and having a flow path through which the resin flows;
A movable connection flow path forming member provided on the downstream side of the second flow path forming pipe, having a flow path through which the resin flows, and connected to the movable mold;
It is provided between the supply source connection flow path forming member and the first flow path formation pipe, and the first flow path formation pipe is vertically oriented around the downstream end of the supply source connection flow path formation member or its vicinity. A first joint connecting the supply source connection flow path forming member and the first flow path forming pipe so as to be swingable along
Provided between the first flow path forming pipe and the second flow path forming pipe, and the second flow path forming pipe extends along the vertical direction around the downstream end of the first flow path forming pipe or the vicinity thereof. A second joint connecting the first flow path forming tube and the second flow path forming tube so as to be swingable,
The second flow path forming tube is provided between the second flow path forming tube and the movable connection flow path forming member, and the second flow path forming tube is vertically oriented around the upstream end of the movable connection flow path forming member or the vicinity thereof. And a third joint that connects the second flow path forming tube and the movable connection flow path forming member so as to be relatively swingable along the molten resin supply device.

Images