JP4307765B2 - Molding auxiliary device and extraction system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a molded body take-out auxiliary device that delivers a molded body taken out from a molding apparatus such as an injection molding apparatus to another device (such as a conveying device), and a molded body take-out system that takes out the molded body from the molding apparatus. About.
[0002]
[Prior art]
In general, an injection molding apparatus for molding a resin lens or the like is provided with a take-out device for taking out a molded body. The take-out device is configured to take out the molded body from the injection molding device and place it on a conveyance table or the like provided adjacent to the injection molding device.
[0003]
9 to 12 show the work of taking out the molded body from the injection molding apparatus and placing it on the transfer table. As shown in FIG. 9, the injection molding apparatus includes a fixed mold 102 and a movable mold 104 for imparting a shape to a resin material, and a fixed surface plate 103 and a movable surface plate 105 for opening and closing them. Have. The movable surface plate 105 is moved in a direction approaching and separating from the fixed surface plate 103 by a cylinder (not shown). Here, the moving direction of the movable surface plate 105 is assumed to be the horizontal direction.
[0004]
A gap 101 is formed between the fixed mold 102 and the movable mold 104, and this gap 101 is indicated by an arrow I in the figure from an injection portion (not shown) provided in the fixed mold 102. Then, the molten resin material is poured. The gap 101 includes a sprue 107 that is a flow path of the molten material, a runner 108 that radially divides the molten material supplied from the sprue 107, and a cavity formed at the tip of the runner 108. (Cavity) 109.
[0005]
When the molding is completed, the movable surface plate 105 moves as shown in FIG. 10 to open the space between the movable mold 104 and the fixed mold 102. At this time, the molded body is attached to the surface of the movable mold 104. This is because the temperature of the movable mold 104 decreases faster than the fixed mold 102 provided with the molten material injection portion. In the molded body, portions corresponding to the sprue 107 and the runner 108 shown in FIG. 9 are a sprue portion S and a runner portion R, respectively. Further, in the molded body, a portion corresponding to the cavity 109 shown in FIG. 9 is a portion that becomes a product (resin lens), and thus is a lens portion L.
[0006]
As shown in FIG. 11, the molded body take-out device includes a chuck plate 110 that holds the runner portion R of the molded body, and a drive mechanism (not shown) that moves the chuck plate 110. The chuck plate 110 grips the molded body attached to the movable mold 104 and then moves in a direction away from the movable mold 104, whereby the molded body is separated from the movable mold 104. After that, the chuck plate 110 is retracted from between the movable mold 104 and the fixed mold 102 (not shown in FIG. 11), and the orientation is changed so that the plate surface becomes horizontal. Further, the chuck plate 110 moves horizontally above the transfer table 111 as indicated by an arrow A in the figure, and then descends onto the transfer table 111 as indicated by an arrow B in the figure, and the formed body is transferred to the transfer table 111. Placed on.
[0007]
Here, as shown in FIG. 10, the surface corresponding to the convex curved surface of the lens portion L in the gap 101 between the fixed mold 102 and the movable mold 104 is formed on the fixed mold 102. It is common. Therefore, the convex curved surface of the lens portion L of the molded body is convex in the same direction as the protruding direction of the sprue portion S. In such a case, when the molded body is placed on the transport table 111, as shown in FIG. 11, the convex curved surface of the lens portion L faces the side opposite to the transport table 111. There is no concern that the lens portion L is deformed.
[0008]
On the other hand, when the surface corresponding to the convex curved surface of the lens portion L is formed on the movable mold 104, the convex curved surface of the lens portion L of the molded product is the sprue portion S as shown in FIG. It protrudes in the direction opposite to the protruding direction. Accordingly, when the molded body is placed on the transport table 111, the convex curved surface of the lens portion L faces the transport table 111 side. There is a possibility that the convex curved surface of this will be deformed. Therefore, the conveyance table 111 is formed with a recess 112 for accommodating the convex curved surface of the lens portion L.
[0009]
[Problems to be solved by the invention]
However, even if the conveyance table 111 is provided with the concave portion 112 that accommodates the convex curved surface of the lens portion L of the molded body, the convex curved surface of the lens portion L comes into contact with the periphery of the concave portion 112 due to dimensional shrinkage accompanying the temperature decrease of the molded body And may be damaged. In addition, there is a possibility that the lens portion L moves in the process of cutting the molded body. At this time, the convex curved surface of the lens portion L may be in contact with the periphery of the concave portion 112 and damaged.
[0010]
This invention is made | formed in view of this problem, The objective is to provide the taking-out assistance apparatus or taking-out system of a molded object which can prevent the damage of the product corresponding | compatible part of a molded object.
[0011]
[Means for Solving the Problems]
A molded product take-out assisting device according to the present invention is used together with a molding device for molding a molded product, and is a take-out assisting device that receives the molded product taken out from the molding device and places it on a predetermined device. It is characterized by comprising holding means for holding and reversing means for inverting the holding means while holding the molded body. The molded body has a product-corresponding portion having a convex curved surface as a lens, and the holding means faces the molded body so that the convex curved surface of the product-corresponding portion faces the side opposite to the predetermined device. It is characterized by being placed on the predetermined device.
[0012]
Further, the molded product take-out system according to the present invention is a molded product take-out system used together with a molding device for molding a molded product, the molded product take-out device for taking out the molded product from the molding device, and the molded product from the take-out device. A molded body take-out assisting device that receives the molded product and places it on a predetermined device. The molded body take-out assisting device has a holding means for holding the molded body, and the holding means is inverted while holding the molded body. And a reversing means for making it possible. The molded body has a product-corresponding portion having a convex curved surface as a lens, and the holding means faces the molded body so that the convex curved surface of the product-corresponding portion faces the side opposite to the predetermined device. It is characterized by being placed on the predetermined device.
[0013]
In the molded product take-out assisting device or take-out system according to the present invention, the molded product taken out from the molding device is held by the holding means. The holding means is inverted while holding the molded body, and thereafter, the molded body is placed on a predetermined device.
[0014]
In addition, it is preferable that the shaping | molding apparatus is equipped with the fixed mold | type and movable mold | die which shape | mold a molded object, and the site | part which forms the convex curve of a product corresponding part is formed in a movable mold | type. Further, the molded body includes a basic portion extending in one direction, a plurality of arm-shaped portions extending radially from one end in the extending direction of the basic portion, and a product-corresponding portion formed at the tip of each arm-shaped portion. It is preferable that the holding means grips the arm-shaped part of the molded body.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a diagram showing a basic configuration of an injection molding apparatus 1 used together with a molded body take-out assisting apparatus according to an embodiment of the present invention. The injection molding apparatus 1 includes an injection part 11 that plasticizes and fluidizes a molding material such as a thermoplastic resin on a base 10, a fixed mold 12 and a movable mold 14 into which the molding material is injected, and the fixed mold. A fixed surface plate 13 and a movable surface plate 15 for holding the mold 12 and the movable mold 14 are provided. The movable surface plate 15 is moved in a direction approaching and separating from the fixed surface plate 13 by a cylinder 16 provided on the base 10, whereby the fixed mold 12 and the movable mold 14 are moved. Open and close.
[0016]
Here, the direction in which the movable surface plate 15 moves (that is, the horizontal direction in FIG. 1) is defined as the X direction, and the direction orthogonal to the surface of the base 10 (that is, the vertical direction in FIG. 1) is defined as the Z direction. To do. In addition, a direction perpendicular to both the X direction and the Z direction (a direction perpendicular to the paper surface) is defined as a Y direction.
[0017]
A gap is formed in the joint between the fixed mold 12 and the movable mold 14 for pouring the molten material into a certain shape. The gap includes a sprue 17 that is a flow path for flowing the molten material from the injection portion 11, a runner 18 that radially divides the molten material supplied from the sprue 17, and a cavity 19 that is formed at the tip of the runner 18. have. In the present embodiment, it is assumed that eight cavities 19 are provided so as to mold eight lenses.
[0018]
A molded body W (FIG. 3) formed by the fixed mold 12 and the movable mold 14 includes a sprue portion S that is a basic portion corresponding to the above-described sprue 17 and a runner portion that is an arm-like portion corresponding to the runner 18. R and a lens portion L which is a product corresponding portion corresponding to the cavity 19. In the present embodiment, the molded body W is assumed to have four runner portions R and eight lens portions L.
[0019]
FIG. 2 shows the configuration of the peripheral device of the injection molding apparatus 1, and is a perspective view including a molded product takeout assisting device according to the present embodiment. Around the injection molding apparatus 1, a take-out device 2 that takes out the molded body W from the injection molding apparatus 1 and a take-out auxiliary device 3 that delivers the molded body W taken out by the take-out apparatus 2 are provided. Here, the take-out assisting device 3 corresponds to a specific example of the “molded product take-out assisting device” in the present invention. The combination of the take-out device 2 and the take-out auxiliary device 3 corresponds to a specific example of the “molded product take-out system” in the present invention.
[0020]
The take-out device 2 includes a chuck plate 21 that grips the molded body W and a Z-direction slide shaft 22 that moves the chuck plate 21 in the Z direction. The Z-direction slide shaft 22 is attached to an X-direction slide carrier 23 that slides along an X-direction shaft 24 that extends in the X direction. The X-direction shaft 24 is further attached to a Y-direction slide carrier 25 that slides along a Y-direction shaft 26 extending in the Y direction. The Z-direction slide shaft 22, the X-direction slide carrier 23, and the Y-direction slide carrier 25 are driven by actuators (not shown), respectively, so that the chuck plate 21 moves in three directions of the X direction, the Y direction, and the Z direction. It has become.
[0021]
FIG. 3 is an enlarged view of the chuck plate 21 of the take-out device 2. The chuck plate 21 includes a first plate 201 and a second plate 202 which are two plate-like members. The upper end of the second plate 202 is attached to a swing plate 208 that is swingably provided at the lower end of the Z-direction slide shaft 22 (FIG. 2). Thus, the chuck plate 21 can swing between a vertical state (a state indicated by a solid line in FIG. 3) facing the movable mold 14 and a horizontal state indicated by a one-dot chain line in FIG. 3. . In the vertical state, the first plate 21 is positioned on the movable mold 14 side, and the second plate 22 is positioned on the fixed mold 12 side. The first plate 201 is attached to the second plate 202 via an elastic member (not shown), and can move by a predetermined amount in a direction approaching and separating from the second plate 202.
[0022]
The chuck plate 21 has an insertion hole 206 through which the sprue portion S of the molded body W is formed, which is formed at substantially the center of the first plate 21 and the second plate 22. The chuck plate 21 further has a chuck claw 200 that holds the runner portion R of the molded body W. The chuck claw 200 protrudes toward the movable mold 14 through the opening 205 formed in the first plate 201 and is driven by an actuator (not shown) so as to grip, for example, two runner portions R in the molded body W. It has become.
[0023]
As shown in FIG. 2, a take-out auxiliary device 3 and a transport table 5 are provided adjacent to the injection molding device 1 in the Y direction. The take-out auxiliary device 3 receives the molded body W from the take-out device 2 and places the molded body W on the transport table 5. Moreover, the conveyance table 5 moves horizontally by a moving mechanism (not shown), and conveys the molded body W to a device (for example, a cutting device) in a subsequent process.
[0024]
FIG. 4 is a side view illustrating a basic configuration of the take-out auxiliary device 3. The take-out assisting device 3 includes a support column 30 extending in the Z direction, a guide rail 31 extending along the longitudinal direction of the support column 30, and a lifting body 32 configured to be movable in the Z direction along the guide rail 31. It has. Further, a rotating cylinder 34 is attached to the elevating body 32, and a holder 36 that holds the molded body W is attached to an output shaft 35 of the rotating cylinder 34. The holder 36 corresponds to a specific example of “holding means” in the present invention. The rotating cylinder 34 corresponds to a specific example of “inversion means” in the present invention. FIG. 4 shows a state in which the elevating body 32 is in the “first position” that is substantially the upper end of the moving range and a state that is in the “second position” that is the substantially lower end of the moving range. Yes.
[0025]
FIG. 5 is a perspective view illustrating a configuration of a main part of the take-out auxiliary device 3. The holder 36 of the take-out assisting device 3 has, for example, a rectangular support plate 37, and the two runner portions R of the molded body W are held on one surface (the upper surface in the drawing) of the support plate 37. Two gripping portions 40 are provided. Each gripping portion 40 includes a pair of gripping claws 41 and an actuator 42 that drives the gripping claws 41. The two gripping portions 40 are arranged to grip two runner portions different from the runner portion R chucked by the chuck plate 21 of the take-out device 2. An abutting member 38 that abuts on the lower surface of the sprue S of the molded body W is formed at the substantially central portion of the mounting surface of the support plate 37.
[0026]
As shown in FIG. 4, in this take-out assisting device 3, the holder 36 receives the molded product W from the take-out device 2 when the elevating body 32 is in the first position. Further, the elevating body 32 moves from the first position to the second position, and during that time, the rotary cylinder 34 is operated and the holder 36 is inverted 180 °. Further, when the elevating body 32 reaches the second position in the movement range, the holder 36 releases the molded body W and places it on the transport table 5.
[0027]
The conveyance table 5 has an insertion hole 51 through which the sprue portion S of the molded body W is inserted, and an adsorption hole 52 through which the lens portion L is adsorbed and held. The suction hole 52 is connected to a vacuum suction device (not shown) so that the lens portion L of the molded body W can be held by vacuum suction. Further, as shown in an enlarged view in FIG. 6, the surface opposite to the convex curved surface of the lens portion L of the molded body W has a slightly concave curved surface, and the conveyance table 5 is formed at the peripheral edge of the concave curved surface. To come in contact with.
[0028]
Next, the operation of the take-out assisting device 3 configured as described above will be described together with the operations of the injection molding device 1 and the conveyance table 5. 7 to 8 are views for explaining an operation of taking out the molded body W from the injection molding apparatus 1. As shown in FIG. 7, in the injection molding apparatus 1, after the molten material is poured between the fixed mold 12 and the movable mold 14 and the molding is performed, the movable surface plate 15 moves to move the movable mold. The mold 14 is separated from the movable mold 14. At this time, the molded body W is attached to the surface of the movable mold 14.
[0029]
Next, the Z-direction slide shaft 22 of the take-out device 2 moves downward to place the chuck plate 21 between the fixed mold 12 and the movable mold 14. Further, the X slide body 23 is appropriately moved in the X direction along the X direction shaft 24, and the two chuck plates 21 of the chuck plate 21 respectively grip the two runner portions R of the molded body W. Further, an unillustrated protrusion mechanism provided on the movable surface plate 15 protrudes the molded body W from the movable mold 14 . As a result, the molded body W is separated from the movable mold 14 and held on the chuck plate 21.
[0030]
Subsequently, as shown in FIG. 8, the Z-direction slide shaft 22 is moved upward to retract the chuck plate 21 from between the fixed mold 12 and the movable mold 14. And the surface of the chuck plate 21 is leveled. After that, the Y-direction slide carrier 25 operates and moves onto the take-out assisting device 3 shown in FIG.
[0031]
At this time, as shown in FIG. 4, the elevating body 32 of the take-out auxiliary device 3 is in the first position (that is, the position where the molded body W is received). Thereby, the chuck plate 21 of the take-out device 2 and the holder 36 of the take-out auxiliary device 3 face each other. After that, the gripping portion 40 (FIG. 5) of the take-out assisting device 3 operates to grip the runner portion R of the molded body W. At this time, the gripping part 40 grips two runner parts different from the two runner parts chucked by the chuck plate 21. Next, the chuck of the molded body W by the chuck plate 21 of the take-out device 2 is released. The chuck plate 21 of the take-out device 2 moves to the original position on the injection molding device 1 after releasing the chuck of the molded body W.
[0032]
After the holder 36 holds the runner portion R of the molded body W, the elevating body 32 starts to descend. While the elevating body 32 is being lowered, the rotary cylinder 34 is operated to rotate the holder 36 by 180 °. Thereby, the molded object W hold | maintained at the holder 36 will be in the state which turned the sprue part S downward. When the holder 36 reaches the second position, the molded body W is placed on the transport table 5. After that, a vacuum suction device (not shown) is operated to perform vacuum suction of the lens portion L through the suction hole 52. Thereby, the molded body W is held on the transport table 5.
[0033]
After the molded body W is held by the transport table 5, the holder 36 of the take-out assisting device 3 releases the grip of the runner portion R by the grip portion 40. After that, the lifting body 32 of the take-out assisting device 3 rises and returns to the first position. Further, in the middle of returning the lifting body 32 from the second position to the first position, the rotary cylinder 34 is operated to rotate the holder 36 by 180 °, and the orientation of the holder 36 is changed to the original state (that is, the grip portion 40 is Return to the top). The conveyance table 5 moves to a downstream device (for example, a cutting device) (not shown), and processing such as cutting of the molded body W is performed.
[0034]
As described above, according to the present embodiment, the molded body W taken out by the take-out device 2 is placed on the transport table 5 while being reversed by the take-out auxiliary device 3, so that the lens portion L of the molded body W is placed. It is possible to prevent the convex curved surface from coming into contact with the transport table 5. Therefore, it is possible to prevent the portion that becomes the convex curved surface of the lens from being deformed or scratched. In addition, since it is not necessary to reverse the lenses individually in the subsequent process, it is possible to prevent complication of the assembling work.
[0035]
Furthermore, since the take-out assisting device 3 grips the runner portion R of the molded body W, the molded body W can be held more reliably than when the sprue portion S that is easily bent is gripped.
[0036]
While the present invention has been described with reference to the embodiment, the present invention is not limited to this embodiment, and various modifications can be made. For example, in the present embodiment, the molded body W has eight lens portions L, but the number of lens portions may be 7 or less, or 9 or more. Moreover, in this Embodiment, although the number of the runner parts R of the molded object W was 4, the number of the runner parts R may be 5 or more, and may be 3 or less.
[0037]
【The invention's effect】
As described above, according to the extraction system of the molded article according to claim 1 or any one of the extraction aid or claims 4 to 6 of the shaped body according to any one of claims 3, Since the holding means holding the molded body is inverted and the holding means places the molded body on a predetermined device, even if the molded body has a convex curved surface, the convex curved surface is It is possible to prevent the convex surface from being damaged.
[0038]
In particular, according to the extraction system of the molded article according to extraction assist apparatus or claim 6 of the shaped body according to claim 3, since so as to hold the arm-shaped portions of the molded body, the stem portion of the molded body Even when is deformed, the molded body can be reliably held.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating a basic configuration of an injection molding apparatus used together with a molded body take-out assisting apparatus according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a configuration of a peripheral device of an injection molding apparatus including a molded body take-out auxiliary device according to an embodiment of the present invention.
FIG. 3 is a perspective view illustrating a configuration of a main part of a take-out apparatus that takes out a molded body from the injection molding apparatus illustrated in FIG.
4 is a side view showing the configuration of the take-out assisting device shown in FIG. 2. FIG.
5 is a perspective view showing a main part of the take-out assisting device shown in FIG. 2. FIG.
6 is a view showing a cross-sectional structure around a suction hole in the take-out assisting device shown in FIG.
7 is a view for explaining an operation of taking out a molded body from the injection molding apparatus shown in FIG. 1. FIG.
FIG. 8 is a diagram for explaining a step following FIG. 9;
FIG. 9 is a view for explaining a conventional method of taking out a molded body.
10 is a diagram for explaining a process following FIG. 9; FIG.
FIG. 11 is a diagram for explaining a process following FIG. 10;
FIG. 12 is a diagram for explaining another example of a conventional method for taking out a molded body.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Injection molding apparatus, 2 ... Extraction apparatus, 21 ... Chuck board, 3 ... Extraction auxiliary | assistant apparatus, 32 ... Lifting body, 34 ... Rotating cylinder, 36 ... Holder, 50 ... Conveyance table.

Claims (6)

A take-out auxiliary device that is used together with a molding device for molding a molded body, receives the molded body taken out from the molding device, and places it on a predetermined device,
Holding means for holding the molded body;
Reversing means for reversing the holding means while holding the molded body ,
The molded body has a product corresponding part having a convex curved surface as a lens,
The holding means places the molded body on the predetermined device such that the convex curved surface of the product-corresponding portion faces away from the predetermined device . Extraction assist device. The molding apparatus includes a fixed mold and a movable mold for molding the molded body,
The movable mold, the extraction aid that claim 1, wherein the portion forming the convex curved surface of a product corresponding parts are formed. The molded body includes a basic portion extending in one direction, a plurality of arm-shaped portions extending radially from one end in the extending direction of the basic portion, and a product-corresponding portion formed at the tip of each arm-shaped portion. Have
The auxiliary device for taking out a molded body according to claim 1, wherein the holding means grips the arm-shaped portion of the molded body. A molded body take-out system used with a molding apparatus for molding a molded body,
An apparatus for taking out the molded body from the molding apparatus;
A molded product take-out assisting device that receives the molded product from the take-out device and places it on a predetermined device;
The molded body take-out assisting device includes holding means for holding the molded body, and reversing means for inverting the holding means while holding the molded body ,
The molded body has a product corresponding part having a convex curved surface as a lens,
The holding means places the molded body on the predetermined device such that the convex curved surface of the product-corresponding portion faces away from the predetermined device . Take-out system. The molding apparatus includes a fixed mold and a movable mold for molding the molded body,
The molded product take-out system according to claim 4 , wherein the movable mold is formed with a portion for forming the convex curved surface of the product corresponding portion. The molded body includes a basic portion extending in one direction, a plurality of arm-shaped portions extending radially from one end in the extending direction of the basic portion, and a product-corresponding portion formed at the tip of each arm-shaped portion. Have
The molded body take-out system according to claim 4 , wherein the holding means grips the arm-shaped portion of the molded body.

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