JP3382701B2 - Work supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention
Related to the workpiece supply device for placement in the cavity.
Especially for multiple inserts in a short time and with high precision
The present invention relates to an apparatus for supplying a work that can be performed. [0002] 2. Description of the Related Art For example, as shown in FIG.
The bar is formed according to the shape of the dust cover
Inject molten material into cavity with mold closed
And heating and cooling. This
In the case of molded products such as
Or inserts made of resin may be buried.
You. With a dust cover such as a ball joint shown in FIG.
Is a ring insert to increase the strength of the two openings
Is molded. [0003] SUMMARY OF THE INVENTION An insert of this kind
In the shape, the insert is accurately inserted into the fixed position in the cavity.
Expensive because of the need to place objects
Very high placement accuracy with workpieces supplied using simple automation equipment
Has limitations. In addition, there are multiple inserts,
If there are a wide variety of types, the placement
Because the standards are different, automation equipment such as the robots described above
Even if a device is used, control becomes complicated and tact time is short.
The problem that compression cannot be performed arises. [0004] The present invention addresses these problems of the prior art.
It was made in view of multiple workpieces in a short time.
Provide workpieces that can be placed at predetermined positions with high accuracy.
It is an object to provide a feeding device. [0005] [MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
In addition, the work supply device of the present invention,According to the shape of the molded product
WascavityThe core type used for formation and the core type
Movably provided, releasing the molded product from the core mold
Annular mold with respect to the mold includingWah
ToIn the fixed position of the core typeA supply device for supplying,
Should supplyThe annularworkIsPlacement in the cavity and
With the same arrangementMountedDummy jig,Chuck that opens and closes
And the dummy jig is held in a state where the chuck is opened.
From aboveFor the dummy jigMountingWas doneThe annularworkTo
GraspHoldingThe chuck to close the chuck.
Grasp the workpiece and move upward, moving above the core mold
And lowers the annular work to the core type.Transport to
Transfer chuck andHaving the transport chuck,The transport
To the chuckIt is movable by being biased downward by a springEstablishment
IsBefore the transfer chuck descends to the core mold.
Notation core typeAbuts the non-molded part ofAnd matingdo itThe carrying
Between the feed chuck and the auxiliary coreRelativeOut of positional relationship
Slide guideAnd the saidOuter circumference of slide guideToSliding
And a spring is provided below the transfer chuck.
Is urged to grip the annular workpiece by the chuck
Abuts the annular work in the
When the guide is in contact with the auxiliary core mold,
By opening the jackSaidRingWorkPress the inside
Placed in the fixed position of the child moldExtrudesleeveHaving
It is characterized by. [0006] [Function] A workpiece such as an insert is placed directly in the cavity.
By adopting the method of direct supply and arrangement, the supply device and the formation
It is necessary to accurately position the mold. But
Some positioning based on the mold part of the mold
Positioning is performed so that the means contacts the mold part.
Adversely affect molding quality due to scratches on the mold
Will affect you. Therefore, in the work supply apparatus of the present invention,
First, the work to be supplied is arranged in the same way as the arrangement in the cavity
Use a dummy jig held by
The actual position in the cavity
Realize. In particular, the work to be supplied into the cavity
If there is a number, relative to each work with the dummy jig
Position can be realized. [0008] In this manner, the positioning between the works is performed.
After that, these workpieces are once
And transport it to the cavity. Therefore, Dami
-Changes to the relative position of each workpiece positioned by the jig
Does not occur. Positioning of the transfer chuck and the cavity
Is performed by the positioning means provided on the transport chuck.
However, in the work supply apparatus of the present invention,
Abutting the means against the non-mold part of the mold
The mold part of the mold.
It does not damage. Finally, it is moved along the positioning means.
Is gripped by the transport chuck by the pushing means provided at
After placing the work in the cavity, use a dummy jig
Supplying the work into the cavity with it positioned
be able to. [0011] An embodiment of the present invention will be described below with reference to the drawings.
I will tell.Mold First, as a molded product, the ball joint shown in FIG.
Taking this dust cover as an example, molding this dust cover
The configuration and operation of the forming die will be described. FIG.
FIG. 6 is a sectional view showing a mold according to an embodiment, and FIG.
FIG. 3 is a cross-sectional view showing a molding die according to one embodiment of the present invention,
FIG. 7 is a view showing the state of release of a product, and FIG.
It is a half sectional view showing a bar. In the molding die of this embodiment, the gate 10 is formed.
Upper mold 1, core mold 3 in which molded product M finally remains,
Release the lower mold 4 supporting the slave mold 3 and the molded product M
At this time, there is an auxiliary upper die 2 that moves slightly up and down with respect to the upper die 1.
are doing. The upper mold 1 has a gate 10 with which the injection nozzle contacts.
From the gate 10 and the molten material
5 is guided to the inside. This upper mold 1 is
Together with the board 11 arranged around the auxiliary mold 2 and the lower mold 4
Is fixed to a molding machine (not shown), and
Denotes a fixed mold. Below the upper mold 1 is the above-mentioned fixed side.
An auxiliary upper mold 2 supported by the board 11 is provided. Supplement
The auxiliary mold 2 is formed by a gap S formed between the
The upper die 1 (see FIG. 5)
Up slightly from the position (see Fig. 6)
It can be moved down. In particular, in the molding die of this embodiment, the upper die 1 and the auxiliary
A fluid passage is formed on the mating surface 6 with the upper mold 2. Book
The fluid passage in the embodiment forms an annular recess 7 on the upper mold 1 side.
And a flow communicating with the annular concave portion 7 on the auxiliary upper mold 2 side.
It is constituted by forming a plurality of paths 8. This style
The passage 8 communicates with an annular flow passage 12 formed in the board 11.
Compressed air sent from an air supply source (not shown)
Is guided to the annular flow path 12 of the board 11, from which an auxiliary
It branches into a plurality of flow paths 8 formed in the mold 2,
From these flow paths 8, it is led to the annular concave portion 7 of the upper die 1. Soshi
When the mold is clamped, the annular recess 7 of the upper mold 1 is
Since it is in a dense state, the compression air between the upper die 1 and the auxiliary upper die 2
Pressure will act. In addition, the auxiliary upper die 2
The plurality of flow channels 8 are formed in the annular recess 7 of the upper mold 1.
Pressure to act evenly.
6 and the upper die 1 and the auxiliary upper die 2 are separated smoothly.
You. Further, below the auxiliary upper mold 2, a lower mold 4 is provided.
The lower die 4 is a ram of a molding machine (not shown).
To be able to move closer to and away from the upper mold 1
Has become. That is, the molten material is injected from the gate 10.
When lowering, lower die 4 is raised as shown in FIG.
Product type with mold 1, auxiliary upper mold 2, core mold 3 and lower mold 4.
A cavity 5 corresponding to the shape is formed. This state is closed
In this mold clamping state, the auxiliary upper mold
2 contacts upper mold 1 and lower mold 4 contacts auxiliary upper mold 2
Thus, the inside of the cavity 5 is kept airtight. one
On the other hand, after molding is completed, the molded product M is taken out or
Before inserting molding, insert
(Hereinafter also referred to as ring material) W_1,W_TwoWhen setting
Is opened by lowering the lower mold 4. This behavior
This will be described later. In the lower mold 4, the inner surface of the molded product M is formed.
A sub-mold 3 is provided, and the
By means of the spring 14, the core mold 3 is pushed in the lower mold 4 direction.
It has been energized. This spring 14
When the lower mold 4 is opened in the release process,
Controls the function of releasing the molded product M. In other words, FIG.
The state at the moment when M is released from the upper mold 1 is shown,
The spring 14 interposed between the core mold 3 and the lower mold 4 is
It is contracted, and a pulling force is exerted downward on the core 3
I use it. Therefore, the core mold 3 is
At this time, the molded product M is removed from its shape.
Because of the easiness of release, it will be released from the auxiliary upper die 2.
You. In the center of the core 3, an auxiliary core 15 is provided.
And the spring 16
While being urged, the head of the spacer 17 and the bolt 18
Controls the function of the stopper. This auxiliary core 15 is
A function to position the transfer chuck before starting molding,
The function of releasing the molded product M from the core mold 3 after the molding
So-called knockout). Next, the operation of the forming mold will be described. First
First, the two types of ring materials W_1,W_TwoBelow
Set in mold 4 and core mold 3. Ring material W₁Positioning
Performs positioning of the transfer chuck and the auxiliary core mold 15
After that, as shown in FIG.
Ring material W on 19₁This is done by placing
The mold is clamped as it is. In contrast, the ring material W_TwoIs
Ring material W₁The transfer chuck and the auxiliary core mold 15
And place it on the lower mold 4 before clamping.
Is performed, the positioning is performed by the auxiliary upper mold 2.
It has become. As described above, the ring material W_1,W_TwoInto the cavity
After setting, the mold is closed. Close the mold
This is performed by raising the mold 4,
Push the auxiliary upper die 2 up and the auxiliary upper die 2 contacts the upper die 1
Keep it. The core mold 3 has a spring 14
Is pulled into the lower mold 4 side by the elastic force of. in this way
Then, as shown in FIG. 5, the upper mold 1, the auxiliary upper mold 2, the core mold
3 and cavity 5 corresponding to molded article M by lower mold 4
(Strictly speaking, in this state, the auxiliary core type
15 is a state of being raised with respect to the core mold 3,
In the evacuation or injection process described later,
A cavity will be formed). Next, rubber or the like is placed in the cavity 5 described above.
Injecting molten material of
Vacuum the inside of the cavity 5 so that the
U. This evacuation is performed by applying a vacuum to the gate 10 and the through hole 20.
This can be done by connecting a pump. Inside the cavity 5
When the pressure is reduced to a predetermined pressure, the molten material is discharged from the gate 10.
inject. The injection pressure during this injection and the vacuum evacuation described above
Therefore, the auxiliary core mold 15 is pushed or pulled into the core mold 3.
And ultimately achieve this.
The cavity 5 corresponds to the shape of the shape M. When molding is completed under predetermined injection molding conditions,
Next, the molded product M is released. In this release process,
The lower die 4 is lowered, and almost simultaneously with this, the annular flow
The compressed air is supplied to the passage 12. Then this compressed air
Is formed in the auxiliary upper mold 2 from the annular flow path 12 of the board plate 11.
Into a plurality of flow paths 8, and further from these flow paths 8
It is guided to the annular recess 7 of the upper die 1. Then, close the mold
In the closed state, the annular concave portion 7 of the upper mold 1 is in an airtight state,
Compressed air pressure acts between upper mold 1 and auxiliary upper mold 2
Will be. On the other hand, at this time, the lower mold 4 has started descending.
Therefore, the external force acting on the auxiliary upper mold 2 is
Adhesive force between auxiliary upper mold 2 and adhesion between molded article M and upper mold 1
It is only the force pulled in the upper mold direction by the force. I
Therefore, the compressed air described above assists the upper mold 1
Acts in the direction of pushing down the mold 2 and the compressed air
When the pressure becomes larger than the adhesive force with the molded product M, the auxiliary upper mold 2
Is lowered by the gap S (the height shown in FIG. 6).
Descends by "h"). At this time, it is guided to the annular recess 7
Compressed air enters the interface 9 between the upper mold 1 and the molded product M
As the auxiliary upper mold 2 is pushed down, the molded product M is
1 will be peeled off. The lowering of the auxiliary upper mold 2 is only for the gap S.
As shown in FIG. 6, when the lower mold 4 descends, the core mold 3
The core is formed by a spring 14 interposed between the lower mold 4 and the lower mold 4.
The mold 3 is pulled in the lower mold 4 direction. At this time, the molded product
Due to the shape of M (that is, the molded product M and the core mold 3
Are fitted in shape), and the molded product M is
Will be peeled off. Finally, the molded product M remaining in the core mold 3 is released.
I do. In this release, air is passed through the through hole 20 of the
And passed through the gap between the core 3 and the auxiliary core 15
Then, the distance between the molded product M and the core mold 3 is reached. Soshi
Therefore, the molded article M such as a rubber material has sufficient elasticity.
Therefore, using this elasticity, the molded product M can be compressed by air pressure.
And inflated like a balloon, then molded
The product M is peeled from the core mold 3. [0025]Work supply device Next, two types of ring material are placed in the cavity of the above-mentioned mold.
Supply of workpieces to supply and place these in place
The device will be described. FIG. 1 shows an embodiment of the present invention.
Principal section explaining how to hold a ring from a dummy jig
FIGS. 2A and 2B show the supply of the ring material to the mold according to one embodiment of the present invention.
FIG. 3 is an enlarged cross-sectional view of a main part of FIG.
FIG. 4 is a cross-sectional view of a transfer chuck according to an embodiment of the present invention.
FIG. The work supply device of the present embodiment is an upper mold 1,
Auxiliary upper mold 2, core mold 3, lower mold 4, and auxiliary core mold 15
At a fixed position in the cavity 5 formed by
Types of ring material W selected in_1,W_TwoSupply device to supply
It is. And these two types of ring materials W_1,W_TwoThe mold
Dummy jig 21 held in the same arrangement as that in tee 5
And the ring material W held by the dummy jig 21_1,W_TwoOne
Each time and transported to cavity 5 in the molding process described above
And a transfer chuck 22 that performs the operation. The dummy jig 21 is formed as shown in FIG.
Reproduces the state of being inserted into the shape M, and two rings W
_1,W_TwoIs a jig that reveals the relative position of
According to the regular arrangement position in the cavity 5 shown in FIG.
The two ring members W are provided on the step portions 21a and 21b formed in the same manner._1,W
_TwoAre placed. The dummy jig 21
Ring material W_1,W_TwoMay be placed by automatic equipment or manually
It may be. This dummy jig 21 is a ring material W_1,W_Two
Is formed in a shape corresponding to
Is determined at least. The above-described molding step MP and the dummy jig 21
The arrangement with the process DP is as shown in FIG.
The transfer chuck 22 according to the embodiment moves up and down and rotates.
Is mounted on the dummy jig 21 and the position
Two rings W_1,W _TwoThe molding process MP of mold
Transport to tee 5. This transport chuck 22 is shown in FIG.
To an actuator not shown centering on the rotation axis O shown
The arm portion 22a is further rotated, and another actuator (not shown) is rotated.
It reciprocates up and down by the tutor. FIGS. 1 and 4 show the transport chuck 22.
As shown, two rings W_1,W_TwoFor grasping at once
Chucks 23a and 23b are formed and provided in two.
The actuator attached to the tip of the arm 22a.
Is configured to be opened and closed by a heater (not shown)
I have. Ring material W_1,W_TwoTo hold the chuck 23
a and 23b have two annular recesses 24 as shown in FIG.
a, 24b, 25a, and 25b are formed.
Ring material W is formed in the concave portions 24a, 24b, 25a, 25b._1,W_Two
Are placed between the dummy jigs 21 by sandwiching
Maintain the state of being put out. The dummy jig 21 is moved by the transfer chuck 22.
Ring material W in the cavity 5 of the mold_1,W_TwoWhen transporting
In FIG. 4, the chucks 23a and 23
3b is rotated to the dummy jig process DP in the opened state,
Two ring members W placed on the dummy jig 21_1,W_TwoTo
Lower to the gripping position. Then, the chucks 23a,
23b is closed and two rings W_1,W_TwoTo the annular recess 24a,
I caught it between 24b, 25a, 25b and went up
After that, the arm 22a is rotated until the forming process MP. This
In the molding process PM, the transfer chuck is moved to the position shown in FIG.
22, the chucks 23a and 23b are opened, and the ring material W
_1,W_TwoIs supplied to the core mold 15 and the lower mold 4. In this case, the transport chucks 23a and 23b
Although it is necessary to perform positioning with the molding die,
In the supply device for the workpiece, the transfer chuck 22
It comes into contact with the mold parts 26a and 26b and forms with the transfer chuck.
The positioning of the mold is performed, and as a result, the relative
Guide (Positioning Means) 27 for Proper Positioning
Is provided. This slide guide 27 is shown in FIGS.
2, a fixed rod fixed to the transport chuck 22
28, and the transfer chuck 2
2, a spring 29 is interposed. This sp
The slide guide 27 is always lowered by the ring 29.
The spring is biased toward the
It stops at the head 28a. Then, the transport chuck 22 moves downward.
And the tip of the slide guide 27 contacts the auxiliary core 15.
When it comes into contact, the slide
The guide 27 slides with respect to the fixing rod 28. The tip of the slide guide 27 is being assisted.
A position where the non-molded portions 26a and 26b of the slave mold 15 are in contact with each other.
Protruding surfaces 27a and 27b are formed. This positioning
As shown in FIGS. 2 and 3, the surfaces 27a and 27b
Surface 27a and position in the height direction for positioning in the vertical direction
And a second surface 27b for performing positioning.
The non-molding surfaces 26a, 26b of the auxiliary core type
Contact at the same time. Molded product as it is with auxiliary core mold 15
Even if you configure the part to be discarded without forming
Because there are aspects that do not matter shape quality very much,
Touch the slide guide 27 here by using the surface like
I try to make it. Therefore, the present invention
The specific portion to be brought into contact with the guide 27 is described in the above embodiment.
Position that is not a problem for molded products
What is necessary is just to select suitably. The slide guide 27 is used for dummy treatment.
From the tool 21 to the ring material W_1,W_TwoIn the process DP of gripping
It is also used for positioning the lock 22 and the dummy jig 21.
You. Therefore, as shown in FIG.
Steps matching the slide guide tips 27a, 27b
Parts 21c and 21d are formed. The outer periphery of the slide guide 27 is slid.
An extruding sleeve 30 is provided so as to move.
The pushing is also performed between the extrusion sleeve 30 and the transport chuck 22.
A spring for urging the extension sleeve 30 downward.
31 are interposed. Therefore, as shown in FIG.
After positioning by the slide guide 27,
Ring material W held by the jack 22_1,W_TwoWhen you release
The extrusion sleeve 30 is made of a ring material by the spring force of the pulling 31.
W_1,W_TwoIs pressed against the core mold 3 and placed. Next, the operation will be described. First, automatic equipment
The two ring members W are attached to the dummy jig 21 by using_1,W_TwoSet
Then, the arm 22 a of the transport chuck 22 is moved to the dummy jig 21.
Until the process DP. Chuck 23a, 23b
When the entire arm 22a is lowered in the open state,
The positioning surfaces 27a and 27b at the tip of the
-It matches the steps 21c and 21d of the head of the jig 21. This
, The transfer chuck 22 and the center of the dummy jig 21
Even if they do not match, the slide guide 27
Of the slide guide 27 by the spring 29
Since the tip has flexibility, the dummy jig 21
Of the slide guide is tapered.
The tip of the dovetail 27 is attached to the steps 21c and 21d of the dummy jig 21.
It will fit. The transport chuck is
The relative position between the tool 22 and the dummy jig 21 can be accurately realized.
The ring material W set on the dummy jig 21 by this_1,
W_TwoIs held in a regular state by the chucks 23a and 23b.
You can do it. The chucks 23a and 23b are closed and two rings are closed.
Material W_1,W_TwoIs gripped, the entire arm is moved to the dummy jig 21.
To a position where it does not interfere with Next, as shown in FIG.
The transfer chuck 22 is formed by rotating the arm 22a
After moving to the mold in process MP, as shown in FIG.
Ring material W_1,W_TwoHold down and lower the entire arm 22a.
Let Then, the tip of the slide guide 27 becomes the auxiliary core type.
15 non-molded portions 26a and 26b.
Position of the transfer chuck 22 and the mold is realized.
You. At this time, the extrusion sleeve 30 is_1,W_TwoAbut
are doing. Then, open the chucks 23a and 23b and
Material W_1,W_TwoIs released, the ring material W is pushed by the extrusion sleeve 30._1,
W_TwoIs placed on the core mold 3. As described above, in the work supply apparatus of the present embodiment,
Are the two ring materials W to be supplied first._1,W_TwoThe cavity 5
Using the dummy jig 21 held in the same arrangement as
The ring material W_1,W_TwoCavite by placing
To achieve the actual positioning within the
You. In particular, the ring material W to be supplied into the cavity_1,W_TwoBut
Even if there is a number, each ring W_1,
W_TwoRelative positioning can be realized. Further, the slide guide 27 is connected to the auxiliary core 1
5 and abut on the non-molded portions 26a and 26b.
The mold part of the mold.
There is no fear of causing defects etc.
Not. The above-described embodiment is an example of the present invention.
The present invention has been described for facilitating the solution.
It is not described in order to limit. Accordingly
Therefore, each element disclosed in the above embodiment is a technology of the present invention.
To include all design changes and equivalents belonging to
is there. For example, the embodiment is described using a ring material as an example of a workpiece.
As described above, the workpiece supply device of the present invention is not limited to this.
Not specified, can be applied to various inserts, etc.
You. In addition to supplying two ring materials, one
Or, there is no problem even with three or more works. [0040] As described above, according to the present invention, the supply
The work to be held is held in the same arrangement as that in the cavity.
Using a dummy jig and placing the work on it
To achieve actual positioning in the cavity
In particular, there are multiple workpieces to be supplied into the cavity.
If there is a number, relative to each work with the dummy jig
Position can be accurately realized. Further, positioning between the workpieces by using a dummy jig.
After the work is performed, these workpieces are
And transport it to the cavity at once, so a dummy
The relative position of each work positioned by the jig fluctuates
No transfer occurs and a short transfer can be performed. Further, the positioning means is provided with a non-mold
To position it by contacting it
Therefore, there is no possibility of damaging the mold portion of the mold.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of an essential part for explaining a state in which a ring member is gripped from a dummy jig according to one embodiment of the present invention. FIG. 2 is a cross-sectional view of a main part illustrating a state in which a ring material is supplied to a molding die according to one embodiment of the present invention. FIG. 3 is an enlarged sectional view of a main part of FIG. 2; FIG. 4 is a plan view showing a transport chuck according to one embodiment of the present invention. FIG. 5 is a sectional view showing a molding die according to one embodiment of the present invention. FIG. 6 is a cross-sectional view showing a molding die according to one embodiment of the present invention, showing a state of releasing a molded product. FIG. 7 is a half sectional view showing a dust cover as a molded product. [Description of Signs] 1 ... Upper mold 2 ... Auxiliary upper mold 3 ... Core mold 4 ... Lower mold 5 ... Cavity 6 ... Mating surface 7 ... Annular concave portion 8 ... Channel 9 ... Boundary surface 10 ... Gate 11 ... Board plate 12 … Annular flow path 14… Spring 15… Auxiliary core 16… Spring 17… Spacer 18… Bolt 19… Protrusion 20… Through hole 21… Dummy jigs 21 a, 21 b, 21 c, 21 d… Step 22… Transfer chuck 22 a ... arms 23a, 23b ... chucks 24a, 24b, 25a, 25b ... annular concave portions 26a, 26b ... non-molded portion 27 ... slide guide 27a ... first surface 27b ... second surface 28 ... fixing rod 28a ... head 29 ... spring 30 ... extrusion sleeve 31 ... spring W _1, W ₂ ... ring member (workpiece) M ... moldings S ... gap DP ... dummy jig step MP ... molding process

Claims (1)

(57) [Claims] [Claim 1] Used for forming a cavity according to the shape of a molded product
Core type to be placed, provided to be movable to the core type,
An auxiliary core mold for releasing the molded product from the core mold.
Position the annular workpiece with respect to the mold including
A supply device for supplying to the location includes a dummy jig the annular workpiece to be supplied Ru is placed in the same arrangement as the arrangement in the cavity, the chuck to open and close, in a state where the chuck is opened
It placed from above the dummy jig to the dummy jig
It was lowered to a position for lifting bunch the annular workpiece, the Chat
Close the work, grasp the annular work, lift it up,
Move to the upper part of the mold, and lower the annular workpiece to the core
And a transport chuck for transporting to the mold, the transport chuck movably is spring biased downwardly against the transfer chuck
The transfer chuck is lowered to the core mold.
The relative positions of the auxiliary core die and the transfer chuck by contact and fitted to the non-molded portion of the auxiliary core die by
A slide guide for establishing a relationship , slidably provided on an outer periphery of the slide guide ,
The transfer chuck is urged downward by a spring, and
When the annular work is gripped by the
The slide guide comes into contact with the work and the auxiliary core type
When the chuck is opened, the annular work is pressed by opening the chuck, and the annular work is placed on the fixed position of the core mold.
Supply device Ruwa over click to have a extrusion sleeve location.