JP5752952B2 - Chuck device and molded product take-out device using the same - Google Patents

Description

  The present invention relates to a chuck device that holds a molded product molded by an injection molding machine or the like and a molded product take-out device using the chuck device.

  Conventionally, a molded product molded by a molding machine is taken out from a mold, and the molded product is collected by dividing the molded product into a product part and unnecessary parts such as a sprue and a runner by a cutter. Various apparatuses are known (for example, refer to Patent Document 1).

JP 2002-18915 A

  In such a molded product take-out device, the product part and unnecessary part of the molded product molded by the molding machine are respectively held by the chuck device, taken out from the molding machine, moved to the cutting position, and the product part of the molded product The connecting portion that connects the unnecessary portion and the unnecessary portion is cut by a cutting device, and in this cut state, the molded product is moved to a predetermined position to release the holding of the product portion by the chuck device. There are some which are stored in the predetermined position.

  In such a molded product take-out device, when holding the molded product with the connecting portion cut and moving it to a predetermined position to store the product, the cut end of the product held by the chuck device and the cut end of the unnecessary portion May cause contact interference due to vibration or thermal contraction associated with movement, and the contact interference may change the posture and position of the product and sometimes reverse it.

  For this reason, when the product is stored in a predetermined position such as a tray and sent out to the next process, it is necessary to manually correct the position and posture of the product if the posture or position of the stored product changes. And it will take extra time.

  The present invention has been made paying attention to such points, and when a product obtained by dividing a molded product into a product part and an unnecessary part is stored in a predetermined position, the product is made an unnecessary part. It is an object to prevent the posture and position from changing due to contact interference so that it can be stored in a predetermined position.

  In order to achieve the above object, the present invention is configured as follows.

(1) The chuck device of the present invention takes out a molded product from a molding machine, cuts a connecting portion connecting a product portion and an unnecessary portion in the molded product with a cutting device, and stores the product in a predetermined position. A plurality of the product parts connected to at least one side of the unnecessary part, each holding the product part of a molded product, and releasing the holding at the predetermined position . A first chuck part, a movable body connecting the plurality of first chuck parts arranged on each side with respect to the unnecessary part , and the unnecessary part of the molded product are held, and the holding is released at the collection position. A second chuck unit; and a chuck unit moving unit configured to move the movable body to move the plurality of first chuck units and the second chuck unit toward and away from each other.

  According to the chuck device of the present invention, the first chuck part that holds the product part and the second chuck part that holds the unnecessary part are relatively separated from each other after the connecting part that connects the product part and the unnecessary part in the molded product is cut. By moving the product part away from the unnecessary part, the separated product part does not interfere with the unnecessary part, and the product part can be stored in a predetermined position as a product in a predetermined position. It becomes.

(2) In a preferred embodiment of the chuck device of the present invention, the chuck part moving means holds the product part and the unnecessary part after cutting the connecting part of the molded product by the cutting device. The plurality of first chuck parts and the second chuck part are moved relatively apart from each other, and the plurality of first chuck parts and the second chuck part moved relative to each other are moved by the first chuck part. After the holding is released, the relative movement is performed.

  According to this embodiment, after the connecting portion that connects the product portion and the unnecessary portion of the molded product is cut, the chuck portions are moved relatively apart from each other, so that the product portion and the unnecessary portion are separated and contact interference occurs. On the other hand, after releasing the holding by the first chuck part and storing the product part as a product in a predetermined position, the chuck parts are moved relatively close to each other so that the distance between the chuck parts is restored to the original state. It can be restored and prepared for the next removal of the molded product.

  (3) In another embodiment of the chuck device of the present invention, the chuck part moving means moves the first chuck part back and forth with a constant stroke relative to the second chuck part so that the two chuck parts move relative to each other. It moves apart and makes a relative approach.

  According to this embodiment, the first chuck part holding the product part is moved back and forth with respect to the second chuck part holding the unnecessary part so as to move away from and approach the second chuck part. It can be suitably implemented in the case of a molded product that is positioned.

  (4) In the embodiment of the above (3), the second chuck portion includes a clamp member that holds a sprue portion that is a part of the unnecessary portion of the molded product, and the first chuck portion includes the product portion. The chuck unit moving means may include a drive unit that linearly slides the movable body along a rail.

  According to this embodiment, the product portion sucked and held by the suction pad can be stably moved along the rail in a fixed posture with respect to the unnecessary portion where the sprue portion is held by the clamp member, and the posture change The product part can be moved away from the unnecessary part accurately and accurately.

  (5) In another embodiment of the chuck device of the present invention, a product posture changing means for changing the product posture by rotating the product portion held by the first chuck portion is provided.

  According to this embodiment, for example, in the case of a molded product in which the product part is located on both sides of the unnecessary part, the product parts on both sides are opposite to each other, but the product part on one side is rotated 180 degrees. As a result, the product parts on both sides can be aligned in the same posture and stored as products in predetermined positions, which is advantageous for subsequent product handling.

  (6) The molded product take-out device of the present invention includes the chuck device of the present invention, and the chuck device connects the molded product receiving position for receiving the molded product from the molding machine, and the unnecessary part of the molded product and the product part. The part is reciprocated between a cutting position where the part is cut by the cutting device, a predetermined position where the product is stored, and a recovery position where the unnecessary part is recovered.

  According to the molded product take-out device of the present invention, first, at the molded product receiving position, an unnecessary portion of the molded product molded by the molding machine is held by the second chuck portion of the chuck device, and the molded product is held by the first chuck portion. Next, the chuck device is moved to the cutting position, and the connecting portion that connects the unnecessary portion of the molded product and the product portion is cut by the cutting device. Thereafter, the first chuck portion and the second chuck portion of the chuck device are relatively separated, the unnecessary portion of the molded product is separated from the product portion, and then the holding of the first chuck portion is released at a predetermined position, The product part can be stored in a predetermined position as a product. In this case, since the product part is separated from the unnecessary part after the connecting part connecting the unnecessary part of the molded product and the product part is cut, the product part does not interfere with contact with the unnecessary part as a predetermined position as a product. Can be stored in a predetermined posture.

  According to the present invention, after cutting the connecting portion that connects the product portion and the unnecessary portion in the molded product, the first chuck portion that holds the product portion and the second chuck portion that holds the unnecessary portion are moved relatively apart from each other. By separating the product part from the unnecessary part, the divided product part does not interfere with contact with the unnecessary part, and the product part can be stored in a predetermined position as a product at a predetermined position. .

FIG. 1 is a perspective view showing a schematic configuration of a molded product removing apparatus according to an embodiment of the present invention. FIG. 2 is a perspective view of the molded product. FIG. 3 is a front view of the chuck device of FIG. 1 as viewed from the front. FIG. 4 is a longitudinal side view of the chuck device of FIG. FIG. 5 is a plan view of the chuck device of FIG. 1 as viewed from below. FIG. 6 is a plan view of the chuck device in a separated state as viewed from below. FIG. 7 is a longitudinal sectional side view showing a molded product cutting step (a) and a product storage step (b). FIG. 8 is a front view of a chuck device according to another embodiment as viewed from the front. FIG. 9 is a longitudinal side view of a chuck device according to another embodiment. FIG. 10 is a plan view of a chuck device according to another embodiment as viewed from below. FIG. 11 is a plan view of the chuck device in a separated state according to another embodiment as viewed from below. FIG. 12 is a front view of a chuck device according to still another embodiment as viewed from the front. FIG. 13 is a longitudinal side view of a chuck device according to another embodiment.

  Hereinafter, a chuck device and a molded product take-out device using the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

(Embodiment 1)
FIG. 1 shows a schematic configuration of a molded product removing apparatus 1 according to an embodiment of the present invention. The molded product take-out device 1 of this embodiment is installed in the vicinity of a molding machine 2 for injection molding a synthetic resin molded product.

  The molded product take-out device 1 includes a chuck device 3 that holds a molded product (not shown) molded by the molding machine 2, and the chuck device 3 in the vertical direction indicated by an arrow A and the horizontal direction indicated by an arrow B. And a chuck moving device 4 that moves in the front-rear direction indicated by an arrow C, and a cutting device 5 that cuts the molded product into a product portion and an unnecessary portion. Although FIG. 1 shows the left and right and front and rear directions, this is an example for convenience of explanation. Details of the configuration of the chuck device 3 will be described with reference to FIG.

  In the molded product W of this embodiment, for example, as shown in FIG. 2, an unnecessary portion wb composed of a sprue s and a runner r and a product portion wa on both the left and right sides of the runner r are connected via a gate g. It has become. In other words, the runner r extends up and down from the sprue s, further extends left and right, and is connected to each of the four product parts wa via the gate g.

  As shown in FIG. 1, the cutting device 5 is configured by mounting four sets of nippers 17 arranged vertically and horizontally and opened and closed by air drive on a fixed support frame 16 provided at a front fixed position. Then, as will be described later, the gate g which is a connecting portion connecting the product part wa and the unnecessary part wb of the molded product W is cut, and the molded product W is divided into the product part wa and the unnecessary part wb.

Chuck moving device 4 comprises a lateral moving mechanism 4b for moving the right and left traveling body 40 along the lateral frame 4 ₁ extending in the left-right direction provided on the molding machine 2, extending in the front-rear direction provided in the right and left traveling body 40 and the longitudinal moving mechanism 4c for moving the longitudinal running body 41 along the longitudinal frame 4 _2, and vertical movement mechanism 4a for moving the movable table 6 along the upper and lower frame 4 ₃ extending vertically provided on the longitudinal running body 41 The movable table 6 can be moved in a three-dimensional direction by these moving mechanisms 4a, 4b, and 4c.

  The chuck device 3 for holding the molded product W is provided at the lower end of the movable table 6. The chuck device 3 includes four first chuck portions 3a for individually holding each product portion wa of the molded product W and a second chuck portion 3b for holding an unnecessary portion wb of the molded product W. I have.

  By moving the chuck device 3 in the three-dimensional direction together with the movable table 6 by the chuck moving device 4, the molded product W is taken out from the molding machine 2, moved to a cutting position facing the cutting device 5, and the molded product W is moved. The gate g is cut by the cutting device 5 to divide the molded product W into a product part wa and an unnecessary part wb. In addition, the product part wa is made into a product by the above division. Further, as will be described later, the product is moved to a predetermined position facing the storage recess 18a of the pallet 18 for product storage disposed below, the holding of the product part wa is released, and the product part wa is used as a product in the pallet 18. In the storage recess 18a.

  In the chuck device 3 of this embodiment, after the molded product W is divided into the product portion wa and the unnecessary portion wb by cutting each gate g by the cutting device 5, the product portion wa is stored as a product in the storage recess 18a. In order to prevent the cutting end of the product part wa held by the chuck device 3 and the cutting end of the unnecessary part wb from contacting and interfering with each other, the posture and position of the product part wa are changed. The configuration is as follows.

  3 is a front view of the chuck device 3 as viewed from the front, FIG. 4 is a longitudinal side view thereof, and FIG. 5 is a plan view of the chuck device 3 as viewed from below. The molded product W held by the chuck device 3 is indicated by a virtual line.

  As shown in these drawings, the chuck device 3 includes, as described above, the first chuck portion 3a that individually holds the four product portions wa of the molded product W, and the sprue protruding to the center of the unnecessary portion wb. 2nd chuck | zipper part 3b which hold | maintains. Each of the first chuck portions 3 a is provided on each of the left and right sides of the substrate 7 attached to the movable table 6. The first chuck portions 3 a are a pair of upper and lower provided on the front surface of the substrate 7. A pair of movable frames 9 that can be horizontally moved through the rails 8 and a pair of upper and lower suction pads 11 that are forwardly mounted on the movable frames 9 via the support shafts 10 are provided. A suction passage is formed inside the support shaft 10, and the shaft end and a suction device (not shown) are connected via a tube.

  The second chuck portion 3b is provided on the front surface of the central portion of the substrate 7, and includes a clamp claw 14 as a clamp member facing the opening 13 formed in the center of the substrate 7, and an air drive unit that opens and closes the clamp claw 14. 15.

  In the chuck device 3 of this embodiment, each movable frame 9 is moved left and right with a certain stroke along the rail 8 as chuck unit moving means for moving the first and second chuck units 3a and 3b relatively close to each other. Two air cylinders 12 each reciprocally moved are provided.

  When the molded product W is taken out from the molding machine 2, the upper and lower suction pads 11 of the first chuck portions 3a on both sides of the substrate 7 are in positions corresponding to the respective product portions wa of the molded product W, and the second The clamp claw 14 of the chuck portion 3b needs to be at a position corresponding to the sprue s of the unnecessary portion wb of the molded product W. At this time, the air cylinder 12 as the drive portion is contracted, and each first chuck portion is 3a is in a state of being relatively close to the second chuck portion 3b.

  In the chuck device 3 of this embodiment, each of the first chuck portions 3a on both sides is the second chuck portion 3b until the molded product W is taken out from the molding machine 1 and the gate g of the molded product W is cut by the cutting device 5. It is in a state relatively close to.

  After the gate g of the molded product W is cut by the cutting device 5 to divide the molded product W into a product part wa and an unnecessary part wb, the air cylinder 12 is extended and the first chuck parts 3a on both sides are extended. Are moved away from each other in parallel with respect to the second chuck portion 3b.

  Thus, after the molded product W is divided into the product portion wa and the unnecessary portion wb, the product portion wa that is individually sucked and held by each first chuck portion 3a is replaced with the unnecessary portion held by the second chuck portion 3b. It is designed to be separated from Wb.

  In this way, the chuck device 3 moves the product portion wa divided by the cutting device 5 to a predetermined position facing the storage recess 18a of the pallet 18 in a state where the product portion wa is separated from the unnecessary portion wb. It is possible to effectively prevent the posture and position of the product part wa from changing due to contact interference between the cut end of the product part wa and the cut end of the unnecessary part wb.

  The substrate 7 equipped with the chuck device 3 is supported by the lower end of the movable table 6 so as to be rotatable around a horizontal fulcrum p as indicated by an arrow D in FIG. The substrate 7 is rotated at a right angle by a driving means (not shown) built in 6 so that the holding surface of the chuck device 3 can be switched between a vertical posture in which the chuck device 3 faces forward and a horizontal posture in which the chuck device 3 faces downward.

  Next, operation | movement of the molded article extraction apparatus 1 provided with the chuck | zipper apparatus 3 which has the above structure is demonstrated in order of a process.

  First, the vertical chuck device 3 with the suction pad 11 facing forward is moved to a position above the mold of the molding machine 2 and lowered to a predetermined height in the open space of the mold opened back and forth in the molding machine 2. Inserted. When the molded product W is pushed out from the opened mold by the eject pin, and the sprue s in the molded product W is inserted into the opening 13 of the substrate 7 of the chuck device 3, the clamp claw 14 of the second chuck portion 3b. Is closed and the sprue s portion is held. In addition, the upper, lower, left, and right product portions wa of the molded product W are pressed against and held by the suction pads 11 of the first chuck portion 3a.

  The chuck device 3 that has received the molded product W moves up and moves out of the molding machine 2, and is further moved to a cutting position facing the cutting device 5 as shown in FIG. In the cutting device 5, the nipper 17 is waiting to be opened in advance, and at the cutting position, the gate g of the molded product W held by the chuck device 3 is inserted into each nipper 17, and the nipper 17 is driven to close and gate. g is cut, whereby the molded product W is divided into an unnecessary part wb and a product part wa.

  When the cutting process is completed and the chuck device 3 is retracted from the cutting position, the left and right first chuck portions 3a are moved outwardly in parallel by the extension operation of the air cylinder 12 of the chuck portion 3, respectively. As a result, as shown in FIG. 6, the product portion wa attracted and held by the first chuck portion 3a is pulled away from the unnecessary portion wb along the left-right direction. With the product part wa pulled away from the unnecessary part wb, the chuck device 3 moves above the pallet 18 and then the chuck device 3 rotates to a horizontal posture as shown in FIG. After that, the chuck device 3 which is lowered to a predetermined height and faces downward is brought close to and opposed to the pallet 18.

  Thereafter, the suction of the suction pad 11 in the first chuck portion 3a is released, and each product portion wa is stored as a product in each storage recess 18a of the pallet 18 in a predetermined posture.

  When the product storage process is completed, the chuck device 3 is raised and returned to the original vertical posture, and is moved to the collection position of the unnecessary portion wb, where the clamp pawl 14 is opened and the second chuck portion 3b is held. By releasing, the unnecessary portion Wb is dropped and collected.

  Then, it returns to the origin position and prepares for the next molded product removal.

  One extraction process is completed as described above, and the above process is repeated in accordance with the operation cycle of the molding machine 2.

  Note that the above-described procedure is one example, and for example, the timing of the approach and separation movement of the first and second chuck portions 3a and 3b of the chuck device 3 is not limited to the above-described timing.

  In this embodiment, the present invention is applied to a four-piece molded product W. However, the present invention can be applied to molded products having different shapes and different numbers of products.

(Embodiment 2)
FIGS. 8-11 is a figure corresponding to FIGS. 3-6 of the chuck apparatus 3 of other embodiment of this invention, respectively.

  In the chuck device 3 of this embodiment, the movable frame 9 that is moved left and right by the air cylinder 12 is equipped with the suction pad 11 via the support shafts 10 a and 10 b, and the one support shaft 10 a is fixed to the movable frame 9. In addition, the other support shaft 10b is rotatably supported by the movable frame 9. Further, a rack rod 22 that can be slid up and down via a guide 21 is provided on the right end side of the movable frame 9 on the other side, and a pinion gear 23 that meshes with the rack gear 22a of the rack rod 22 is provided on the support shaft 10b. The support shaft 10b is configured to be rotated in the forward and reverse directions in conjunction with the up and down movement. In addition, a drive gear 25 that is driven forward and backward by the electric motor 24 is provided in the movable frame 9 and meshed with the rack gear 22 a of the rack cage 22.

  In this embodiment, the above-described rack rod 22 and the support shaft 10b are provided with a pinion gear 23 that meshes with the rack gear 22a of the rack rod 22, and a drive gear that is driven forward and reverse by the electric motor 24 and meshes with the rack gear 22a of the rack rod 22. 25 or the like constitutes a posture changing means for changing the product posture by rotating the product portion wa sucked and held by the suction pad 11 of the movable frame 9 on the other side.

  According to this embodiment, each movable frame 9 is moved laterally outward to separate the product part wa from the unnecessary part wb, and then the electric motor 24 is operated to slide the rack cage 22 by a certain amount. The product portion wa sucked and held on the suction pad 11 of the movable frame 9 on the other side is rotated 180 degrees by the rotation of the pinion gear 23 meshed with the rack gear 22a. As a result, the product part wa on the right side molded with the posture in which the gate g is located on the left side is changed to the posture in which the gate g is located on the right side, that is, in the same direction as the product part wa on the left side. It can be stored in a predetermined position in a state aligned in the direction.

  In this embodiment, as means for moving the left and right movable frames 9 left and right, as shown in FIGS. 12 and 13, a single air cylinder 26, a fulcrum bracket 27 moved up and down by the air cylinder 26, Further, by using a pair of bending / extending links 28 that are pivotally connected between the fulcrum bracket 27 and the left and right movable frames 9, the bending / extending links 28 are opened / closed / extended as the fulcrum bracket 27 moves up / down. Can be moved left and right respectively.

(Other embodiments)
As drive means for reciprocating the left and right movable frames 9, various devices such as an electric cylinder and an electromagnetic solenoid can be used in addition to the air cylinder. It is also possible to reciprocate the second chuck portion with a fixed stroke using a return spring and a rotating cam.

  In the above embodiment, since the molded product W has the product parts wa positioned on both sides of the unnecessary part wb, the first chuck part 3a holding the product part wa is replaced with the second chuck part holding the unnecessary part wb. For example, in the case of a molded product W in which the product part wa is located on one side of the unnecessary part wb, the first chuck part 3a holding the product part wa is used. On the other hand, the second chuck portion 3b holding the unnecessary portion wb can be moved closer and away.

  In the above embodiment, the first chuck portion 3a holding the product portion wa is configured to linearly approach and separate in the left-right direction, and the cut ends of the gate g are separated without interfering with each other. However, it is not always necessary to move it linearly, for example, it may be moved along an arc locus having a large curvature.

DESCRIPTION OF SYMBOLS 3 Chuck apparatus 3a 1st chuck | zipper part 3b 2nd chuck | zipper part 8 Rail 9 Movable frame 11 Suction pad W Molded product wa Product part wb Unnecessary part

Claims (6)

A chuck device provided in a molded product take-out apparatus that takes out a molded product from a molding machine, cuts a connecting portion that connects a product part and an unnecessary part in the molded product with a cutting device, and stores the product in a predetermined position,
A plurality of the product parts are connected to at least one side of the unnecessary part;
A plurality of first chuck portions each holding the product portion of the molded product and releasing the holding at the predetermined position;
A movable body connecting the plurality of first chuck portions arranged on each side with respect to the unnecessary portion;
A second chuck portion for holding the unnecessary portion of the molded product and releasing the holding at the collection position;
Chuck part moving means for moving the movable body to move the plurality of first chuck parts and the second chuck part relatively close and apart from each other;
A chuck device comprising: The chuck part moving means includes the plurality of first chuck parts and the second chuck part respectively holding the product part and the unnecessary part after the cutting part cuts the connection part of the molded product. Moving the plurality of first chuck portions and the second chuck portions that have been moved relatively apart from each other, and after the holding of the product portion by the first chuck portion is released, to move relatively closer to each other.
The chuck device according to claim 1. The chuck part moving means moves the first chuck part back and forth with a constant stroke relative to the second chuck part to move both chuck parts relative to and apart from each other.
The chuck device according to claim 1 or 2. The second chuck portion includes a clamp member that holds a sprue portion that is a part of the unnecessary portion of the molded product,
The first chuck portion includes a movable body having a suction pad for sucking and holding the product portion,
The chuck unit moving means includes a drive unit that linearly slides the movable body along a rail.
The chuck device according to claim 3. A product posture changing means for changing the product posture by rotating the product portion held in the first chuck portion;
The chuck device according to claim 1. The chuck device according to any one of claims 1 to 5,
The chuck device does not require a molded product receiving position for receiving a molded product from a molding machine, a cut position for cutting a connecting portion connecting an unnecessary part of the molded product and a product part by a cutting device, and a predetermined position for storing the product. A molded product take-out apparatus that reciprocates over a collection position for collecting a portion.

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