JP2010089389A - Ejector of resin molded product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ejector not producing damage such as a flaw in the ejection process of a resin molded product. <P>SOLUTION: The ejector of the resin molded product includes a product holding means for taking the resin molded product out of a mold to hold the same, a product recovery means for recovering the resin molded product, and a posture holding means for holding the posture of the resin molded product when the product holding means holds the resin molded product to move to the product recovery means from the mold and releases the resin molded product to the product recovery means. By this constitution, the violent fall of the resin molded product in the ejection process is prevented and the occurrence of the damage such as a scratch or the like formed on the surface of the resin molded product can be prevented. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a take-out machine for taking out a resin molded product from a molding machine.

  A resin molded product obtained by molding a synthetic resin by a method such as injection molding or mold press is produced in large quantities and is generally widely used. In the manufacturing process of a resin molded product, a series of processes are performed in which a mold mold attached to a molding machine is filled with a molten resin and cooled to take out a molded product having a predetermined shape. During this time, various techniques for efficiently performing the manufacturing process in a short time are used.

  Patent Document 1 even describes a take-out machine having a gate cut function for separating a molded product taken out in a state connected to a resin filled in a spool and a runner at a gate portion. Patent Document 2 describes a take-out machine that can perform secondary processing for removing the gate residue of a molded product at the time of product take-out. By adding these functions to a take-out machine that takes out a molded product from a resin molding die, an object is to eliminate work in a later process, improve manufacturing efficiency, and reduce costs.

JP-A-5-131507 JP 2001-315174 A

  However, the conventional take-out machine has a problem that the product is damaged during the take-out process, and the product surface is damaged to be a defective product. The problems to be solved by the present invention will be described below.

  1A to 1C show a process in which a take-out machine according to the prior art takes out a resin molded product for vehicle interior. FIG. 1A is a diagram showing a state in which the product gripping tool 4 attached to the tip of the robot arm 2 takes out the resin molded product 7 from the core mold 5. A product gripper support plate 3 to which a plurality of product grippers 4 are mounted is attached to the tip of the robot arm 2 that moves between the opened molding die and the product recovery slope 9 to transport the resin molded product 7. It is attached.

  When the molten resin filled between the clamped core mold 5 and the cavity mold 6 is cooled and molding is completed, the clamped molding die is opened, and the core mold 5 is moved by the operation of an eject pin (not shown). The molded product is separated and can be taken out. The product gripper support plate 3 attached to the tip of the robot arm 2 rotates to the product take-out state shown in FIG. 1A and moves to a predetermined position between the opened core mold 5 and cavity mold 6. To do. When the product gripper 4 mounted on the product gripper support plate 3 grips the resin molded product 7 separated from the core mold 5, the robot arm 2 moves away from the core mold 5. Thereafter, the robot arm 2 moves to an upper position of the product recovery slope 9 with the resin molded product 7 held at the tip as shown in the drawing to open the product.

  FIG. 1 (b) shows the product by rotating the rotary shaft 8 provided at the tip of the robot arm 2 while moving from between the open molds 5 and 6 to above the product recovery slope 9. The gripping tool support plate 3 is in a state of opening the resin molded product 7.

  FIG. 1 (c) shows a state where the product gripping tool 4 attached to the tip of the robot arm 2 that has moved above the product recovery slope 9 opens the molded product 7 to the product recovery slope 9. The molded product 7 released from the state where the claws of the product gripping tool 4 are opened and held falls on the slope and slides to the collection work table 10 and is sent to the next process by the operator.

  FIG. 2 is an explanatory diagram showing a problem when the nail of the product gripping tool 4 is opened and the resin molded product 7 is opened to the product recovery slope 9. In the case of flat interior parts such as door panels, there will be no problem in the process of the above unloader, but for example, the interior of the vehicle is tall and narrow on the low side like a console panel. In the case of a part, as shown in FIG. 2, there is a case where the part falls down on the slope and slides while rubbing the side surface against the slope surface. In some cases, the product may fall from the product collection slope 9 to the collection work table 10 without sliding to the collection work table 10. At this time, there arises a problem that the surface of the molded product is scratched and the appearance is poor.

  Therefore, the present invention has been made in view of the above-described problems, and an object thereof is to realize a take-out machine that does not cause damage such as scratches in the take-out process of a resin molded product.

  In order to solve the above problems, a resin molded product take-out machine according to the present invention includes a product holding means for taking out and holding a resin molded product from a molding die, a product collecting means for collecting the resin molded product, and a product holding Means for holding the resin molded product, moving from the mold to the product collection means, and holding the resin molded product in the product collection means, and holding the posture of the resin molded product. Features.

  According to the present invention, since the posture holding means holds the resin molded product released from the product holding means so as not to fall down, the product collecting means does not cause damage such as scratches.

  Further, in the resin molded product take-out machine according to the present invention, the posture holding means is a posture holding bar that engages with the concave portion of the resin molded product and prevents the roll from falling.

  According to the present invention, the resin molded product that has been released from the product holding means is prevented from falling by engaging the posture holding bar with the concave portion of the resin molded product. As a result, the problem can be solved with a simple configuration and low cost.

Also, in the resin molded product take-out machine according to the present invention, a product cradle for receiving the resin molded product released from the product holding means in a horizontally held state, and a support for rotatably supporting the product cradle. A drive unit that rotates the product cradle and tilts it from the horizontal state in order to slide and collect after receiving the resin molded product,
It is characterized by providing.

  In the present invention, since the resin molded product is received by a product cradle that is held in a horizontal state, the possibility of falling after being released from the product holding means is reduced, and the occurrence of damage such as scratches can be reliably eliminated. .

  According to the resin molded product take-out machine of the present invention, it is possible to realize a take-out machine that does not cause damage such as scratches in the molded product take-out process.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the drawings.

  FIG. 3 is a diagram schematically showing the tip of the robot arm of the unloader according to the present invention. At the tip of the robot arm 2, a product gripping tool 4 that is a product holding means for taking out and holding a resin molded product from a resin molding die, and a product gripping tool support plate 3 that supports the product gripping tool 4 are attached. Yes. The product gripping tool 4 has a pair of claws that are driven by an air pipe (not shown) to open and close, and can grip and hold a predetermined portion of the resin molded product 7.

  In the robot arm 2, the product gripper 4 takes out and holds the resin molded product 7 from the core mold 5, and moves from the mold that has been clamped upward to the product recovery slope 9 that is the product recovery means, and the resin molded product 7 is released. Further, the product holding tool support plate 3 is provided with a posture holding bar 12 which is a posture holding means for holding the posture of the resin molded product 7 when the resin molded product 7 is opened on the product recovery slope 9. . The posture holding bar 12 is inserted into and engaged with the concave portion of the resin molded product 7 to prevent the resin molded product 7 from overturning. Further, the posture holding bar 12 is screwed to the product gripping tool support plate 3 at a position corresponding to the concave portion of the resin molded product 7 to be engaged.

  FIG. 4 is an explanatory view showing a state in which the resin molded product 7 released from the product gripper 4 of the take-out machine according to the present invention is dropped onto the product recovery slope 9. The nail of the product gripping tool 4 is opened, and the resin molded product 7 is dropped on the product recovery slope 9. At this time, the tip of the posture holding bar 12 remains engaged with the recess of the resin molded product 7 to prevent the resin molded product 7 from overturning. That is, as described above, the posture holding bar 12 is not only attached to the position corresponding to the concave portion of the resin molded product 7 but also kept engaged with the concave portion in a state of being opened on the product recovery slope 9. It must have a length.

  FIG. 5 shows a state where the robot arm 2 is moved upward in order to take out the next resin molded product after opening the resin molded product 7 to the product recovery slope 9. Along with the robot arm 2, the tip of the posture holding bar 12 also moves upward, the recess of the resin molded product 7 opened on the product recovery slope 9 and the posture holding bar 12 are disengaged, and the resin molded product 7 is on the slope. Is moved to the collection work table 10 (see FIG. 1).

  As described above, in a process where the resin molded product 7 is held by the product gripping tool 4 attached to the tip of the robot arm 2 and is easily fallen when it is released onto the product recovery slope 9 and dropped. The holding bar 12 can be engaged with the concave portion of the resin product 7 to prevent falling. Thereby, the generation | occurrence | production of the abrasion with the slope surface resulting from a fall, the abrasion of the surface of the resin molded product 7 produced by the fall to a floor surface from a slope, etc. can be prevented.

  In the above embodiment, the product gripper support plate 3 is described as having one posture holding bar 12 attached thereto, but a plurality of posture holding bars 12 may be provided. When the posture of the resin molded product is held by the plurality of posture holding bars 12, when the resin molded product 7 slides on the product collection slope 9, in a direction corresponding to the posture regulated by the posture holding bar 12. Since it slides, blurring is less likely to occur in the direction, and it can be set so as to slide reliably onto the collection work table 10. Thereby, stable work can be performed on the collection work table 10.

  6 and 7 show another embodiment of the present invention. In this embodiment, the resin molded product is opened to a product collection table placed in a horizontal state. Since it is opened on a horizontal collection table, the resin molded product is less likely to fall than the previous embodiment opened on the slope, but in the event of a fall, the resin molded product is damaged. Etc. will occur and become defective products. Therefore, the effect of preventing the occurrence of defective products can be obtained by implementing the present invention to prevent the resin molded product from falling.

  FIG. 6 is an explanatory view showing a state where the resin molded product 7 is opened on the product collection table 9 held horizontally. The claw at the tip of the product gripping tool 4 is opened, and the resin molded product 7 is opened on the product collection base 9. Further, the tip of the posture holding bar 12 is engaged with the concave portion of the resin molded product 7 to prevent the tipping bar from falling.

  The product recovery table 9 is supported by a support 14 at one end and supported by the drive shaft 18 of the drive cylinder 16 at the other end, and maintains a horizontal state. A rotation shaft 13 is provided at the distal end of the support body 14 and holds the product collection table 9 so as to be rotatable. The drive shaft 18 of the drive cylinder 16 expands and contracts under the control of the cylinder control device 15 and moves the movable bearing 17 up and down. As a result, the product collection table 9 rotates and tilts with the rotation shaft 13 as a fulcrum, and the resin product 7 can be slid.

  FIG. 7 shows a state in which the drive cylinder 16 contracts the drive shaft 18 and tilts the product collection base 9 to slide and collect the resin molded product 7. That is, from the state shown in FIG. 6, the robot arm 2 moves upward and moves to the position of the mold in order to take out the next resin molded product. When the robot arm 2 moves upward and the engagement between the posture holding bar 12 and the resin molded product 7 is released, the cylinder control device 15 contracts the drive shaft 18 of the drive cylinder 16 to lower the movable bearing 17, and the product collection table. Tilt 9 to make a slope. Thereby, the resin molded product 7 is recovered by sliding. For example, as shown in FIG. 1, when the collection worktable 10 is provided, the operator collects the resin molded product 7 and sends it to the next step.

  As described above, in the above embodiment, there is little possibility that the resin molded product 7 to be opened on the product collection table 9 held in a horizontal state will fall down. Can prevent falling. Further, since the product collection base 9 is gradually inclined to become a slope by the contraction of the drive shaft 18 of the drive cylinder 16, the resin molded product 7 can be slid while maintaining the posture, and the slope inclined from the beginning. Compared to the case of being opened, the possibility of falling can be reduced.

  Although the preferred embodiments of the present invention have been described in detail above, the resin molded product take-out machine according to the present invention is not limited to the above-described embodiments, and the gist of the present invention described in the claims. Various modifications and changes can be made within the range.

It is explanatory drawing which showed the process in which the taking-out machine which concerns on a prior art takes out a molded product. It is explanatory drawing which showed the collection | recovery state of the molded product which the taking-out machine which concerns on a prior art open | released. It is the schematic diagram which showed the extraction machine which concerns on this invention. It is explanatory drawing which showed the state which the extraction machine which concerns on this invention opens a product. It is explanatory drawing which showed the state which collect | recovers the molded products which the taking-out machine which concerns on this invention opened. It is explanatory drawing which showed the product collection | recovery means which concerns on another aspect of this invention. It is explanatory drawing which showed the product collection | recovery means which concerns on another aspect of this invention.

Explanation of symbols

2 Robot arm 3 Product gripping part support plate 4 Product gripping part 5 Core mold 6 Cavity mold 7 Resin molded product 9 Product recovery slope (product recovery platform)
DESCRIPTION OF SYMBOLS 10 Recovery worktable 12 Attitude control bar 13 Rotation support part 14 Recovery slope support body 15 Cylinder control apparatus 16 Drive cylinder 17 Movable bearing

Claims (3)

Product holding means for taking out and holding the resin molded product from the molding die;
Product recovery means for recovering the resin molded product;
The product holding means holds the resin molded product, moves from the mold to the product collecting means, and holds the posture of the resin molded product when opening the resin molded product to the product collecting means. Posture holding means to perform,
A resin molded product take-out machine characterized by comprising: The posture holding means is
2. The resin molded product take-out machine according to claim 1, wherein the take-out machine is a posture holding bar that engages with the concave portion of the resin molded product to prevent the product from falling. The product recovery means includes
A product cradle for receiving the resin molded product released from the product holding means in a horizontally held state;
A support portion for rotatably supporting the product cradle;
In order to slide and collect after receiving the resin molded product, a drive unit that rotates and tilts the product cradle from a horizontal state;
The resin-molded product take-out machine according to claim 1 or 2, further comprising:

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