JP2011255583A - Machine for taking out resin molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To vertical move a chuck in a long stroke with a short vertical stroke, to reduce size and weight of a device, and to execute resin molding takeout operation by certainly controlling a turn movement direction of the chuck.SOLUTION: In this machine, a vertical movable body is vertically movably supported to a vertical frame provided in a back-and-forth movable body movably supported to a back-and-forth frame extending in a direction according with a central axis to a body frame fixed on the upper face of a fixed platen of a resin molding machine. A turn arm is supported to the vertical movable body turnably around a support shaft, and a disk member is fixed in a state that the center of the disk member accords with the shaft center of the support shaft. A rotation force impartment member is provided in a rotor rotatably journalled to a tip part of the turn arm and the disk member. A chuck rod installed with the chuck holding a resin molding in a lower part is fixed to the rotor. The other end part of a rocking arm having one end part turnably journalled to a lower part of the vertical movable member is connected to the turn arm. The machine includes a turn direction control means rocking the rocking arm to control a turn direction of the turn arm.

Description

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

  Conventionally, as shown in, for example, Patent Document 1, the mold position and the injection unit side of the resin molding machine are fixed to the operation side or the non-operation side of the stationary platen in the resin molding machine and coincide with the central axis of the resin molding machine. A main body frame extending between, a front and rear traveling body supported so as to move in the central axis direction relative to the main body frame, and a direction orthogonal to the central axis with respect to the front and rear traveling body, Left and right traveling bodies supported so as to move to the left and right frames extending between the non-operation side and the mold position, and a holding member that is provided on the left and right traveling bodies and holds a resin molded product, And a vertical unit that moves between upper positions spaced apart upward from the mold, and with the driving of the front and rear traveling body, the left and right traveling body, and the vertical unit, the holding member is moved in a three-dimensional direction to take out the resin molded product Resin molded product take-out machine Are known.

In the resin molding machine, in consideration of safety during the molding operation, safety doors are attached to the operation side and the non-operation side of the mold part so as to be openable and closable so as to cover the entire mold part. For this reason, in the resin molded product take-out machine shown in Patent Document 1, when removing the resin molded product from the resin molding machine, it is necessary to move over the safety door, so the holding member is moved with a long vertical stroke. Therefore, the upper and lower unit itself had to use a large member with a long stroke. As a result, there is a problem that the resin molded product take-out machine itself becomes large and the equipment cost increases.

Also, when taking out a large resin molded product, the resin molding machine itself is large, and it is possible to secure a wide space around it, but when taking out a small resin molded product, Since the molding machine itself is small and it is necessary to increase productivity, a large number of resin molding machines must be arranged in a predetermined molding work space, and it is difficult to secure a wide space between the resin molding machines.

As a resin molded product take-out machine for a small resin molded product, for example, as shown in Patent Document 2, it is fixed to the operation side or the non-operation side of the stationary platen in the resin molding machine, and extends in the central axis direction of the resin molding machine. A slider supported to move in the direction of the central axis with respect to the main body frame, an electric motor fixed to the slider and having an axis in the direction of the central axis, and a base end portion on the rotation shaft of the electric motor 2. Description of the Related Art There is known a resin molded product take-out machine that is composed of a swing arm that is fixed and has a vertical unit attached to the tip and a holding member that is provided at the tip of the vertical unit and holds a resin molded product. .

The resin molded product take-out machine shown in Patent Document 2 is configured such that the holding unit moves over the tie bar and safety door of the resin molding machine by operating the vertical unit in the vertical direction as the turning arm rotates. is doing. However, in the resin molded product take-out machine configured as described above, it is necessary to control the rotation of the upper and lower units with the rotation of the swivel arm because the upper and lower units must always be kept vertical. For this reason, a mechanism for rotating the upper and lower units in conjunction with the turning operation of the turning arm is required, which causes a problem that the device itself becomes complicated and expensive. Also, since the tip of the swivel arm is heavy, it is necessary to use a high-speed rotation and high-torque electric motor in order to turn the swivel arm at high speed with high responsiveness. Have the problem of becoming

JP2003-300272A JP 2003-245927 A

  The problem to be solved is that it is necessary to use a large vertical unit with a long vertical stroke in order to lengthen the vertical stroke of the holding member so as not to interfere with the resin molding machine. It is in the point of weight. Further, in order to keep the posture of the holding member constant during the turning operation of the turning arm, it is necessary to provide the posture control member of the holding member with respect to the turning arm, and the structure is complicated and the cost is increased.

  In the present invention, the main body frame fixed to the upper surface of the fixed platen of the resin molding machine is supported movably by the front and rear frames extending in a direction coinciding with the central axis, and is moved back and forth by the front and rear operation members. A movable body, a vertically movable body supported so as to be movable in the vertical direction with respect to a vertical frame provided on the front and rear traveling bodies, and reciprocated by a vertically movable member, and a support shaft with respect to the vertical movable body. A rotating arm having two arms that are rotatably supported, a disk member that is fixed to the vertical movable body so that its center coincides with the axis of the support shaft, and one of the rotating arms. A rotating body that is rotatably supported at the tip of the arm, a rotational force applying member that is fixed to the disk member and connected to the rotating body, and an end that is fixed to the support shaft of the rotating body, A chuck that holds the resin molded product at the bottom. One end is pivotally supported at the lower part of the chuck rod to which the hook is attached and the upper and lower movable member, and the other end is pivotally supported on the other arm of the pivot arm. The main feature is provided with a swing arm and a rotation direction control means for controlling the rotation direction of the rotation arm by swinging the swing arm.

  According to the present invention, the chuck can be moved up and down with a short up and down stroke, and the apparatus can be reduced in size and weight. Further, the resin molded product take-out operation can be executed by reliably controlling the rotation direction of the chuck.

It is a whole perspective view of a resin molded product take-out machine. It is a front view of a resin molded product take-out machine. It is a top view of a resin molded product take-out machine. It is expansion explanatory drawing of a rotation direction control means. It is explanatory drawing which shows the rotation state of the rotation arm at the time of releasing a chuck | zipper from between molds. It is explanatory drawing which shows the state at the time of a vertical movable body moving to an upper position, when a rotation arm moves from a metal mold | die side to the molded article release position side. It is explanatory drawing at the time of providing the rotational force to the molded article open position side. It is explanatory drawing which shows the state which the rotation arm moved to the molded article release position. It is explanatory drawing which shows the state in the middle of the movement of the rotation arm from a molded article open position to a metal mold | die side. It is explanatory drawing at the time of providing the rotational force to a metal mold | die side. It is explanatory drawing which shows the example of a change of a rotational force provision member.

  According to the present invention, the best mode is provided with a rotation direction control means for controlling the rotation direction of the rotation arm by swinging the swing arm.

The present invention will be described below with reference to the drawings showing examples.
1 to 5, a resin molded product take-out machine 3 according to the present invention is fixed to the upper surface of the operation side or counter-operation side end of the stationary platen 1 in the resin molding machine. The main body frame 5 of the resin molded product take-out machine 3 extends in a direction perpendicular to the central axis of the resin molding machine, and the main body frame 5 has a movable mold opened in the front-rear direction that coincides with the central axis. The base end portion of the front and rear frame 7 extending in a length up to is fixed.

A rail 9 extending in the front-rear direction is fixed on the front-rear frame 7, and a front-rear movable body 11 is supported on the rail 9 so as to move in the front-rear direction. The front / rear movable body 11 is provided with a front / rear cylinder 13 that constitutes a front / rear operation member and has an axial line in the front / rear direction. The operation rod 13a of the front / rear cylinder 13 has a shaft end that is a mold of a resin molding machine. It is fixed to a stopper 13b fixed to the rail 9 so that its position can be changed corresponding to the mold opening width. The front / rear cylinder 13 moves the front / rear movable body 11 to a position where the front / rear movable body 11 is separated from the mold when the operating rod 13a is extended and a position where the front / rear movable body 11 is close to the mold when the operating rod 13a is contracted.

A base end portion of an upper and lower frame 15 extending in the vertical direction is fixed to the front / rear movable body 11, and a rail 17 extending in the vertical direction is fixed to the upper and lower frame 15. A vertical movable body 19 is supported on the rail 17 so as to move in the removal direction. Further, an upper and lower cylinder 21 that constitutes an upper and lower operation member and has an axis in the vertical direction is fixed to the upper and lower frame 15. The operating rod 21 a of the raising cylinder 21 is fixed to the movable body 11 at the shaft end. The upper and lower cylinders 21 move the front and rear movable body 19 to a predetermined upper position and the vertical movable body 19 to a predetermined lower position in a state where the vertical movable body 19 is contracted with the operating rod 21a extended.

A disk member 23 is fixed to the vertical movable body 19, and a shaft end portion of a support shaft 25 having an axial line in the front-rear direction is fixed to the center of the disk member 23. The support shaft 25 is pivotally supported on the base end side of the rotation arm 27 so as to be rotatable. A rotating body 29 having the same outer diameter as that of the disk member 23 is rotatably supported at the tip of the rotating arm 27 on the one arm portion side. A rotating shaft (not shown) of the rotating body 29 is supported on the rotating shaft of the rotating body 29. The attachment member 31 is fixed.

  Between the disk member 23 and the rotating body 29, a metal wire 33 constituting a turning force applying member is bridged. That is, the metal wire 33 is wound around the outer peripheral surface of the rotating member 29 after being wound around the outer peripheral surface of the disk member 23 in a state where one end is fixed to one of the vertically movable body 19 and the disk member 23. Then, after being wound around the outer peripheral surface of the rotating body 29, it is stretched over the outer peripheral surface of the disk member 23 and fixed.

An upper portion of a chuck rod 37 having an axis in the vertical direction is fixed to the mounting member 31 so that the position of the chuck rod 37 can be adjusted. A chuck 39 for holding a resin molded product or a sprue is attached to the lower end of the chuck rod 37. Is attached. The chuck 39 may have either a structure provided with a suction pad for negatively adsorbing a resin molded product or a structure provided with a gripper for gripping the resin molded product. In the illustrated example, the chuck 39 has a gripper structure. Indicates.

On the other hand, the other arm portion of the swing arm 41 whose one end portion is pivotally supported by the front and rear movable body 11 is pivotally supported and connected to the distal end portion of the other arm portion of the rotating arm 27. Has been. The length of the other arm portion and the length of the swing arm 41 in the rotating arm 27 are set so as to substantially match the vertical stroke of the vertical movable body 19. Further, an operating shaft 41 a having an axis line in a direction orthogonal to the longitudinal direction is fixed to the swing arm 41.

The front / rear movable body 11 is provided with a rotation direction control means 43 that abuts on the operating shaft 41a of the swing arm 41 and presses and urges it clockwise and counterclockwise. The rotation direction control means 43 includes a plane horizontal U-shaped piece member 45 having a gap portion 45c in which the operating shaft 41a is loosely fitted between a pair of opposed contact portions 45a and 45b, and the piece member. 45 is constituted by a piece actuating member 47 such as an air cylinder or an electromagnetic solenoid which moves in a horizontal direction with a predetermined stroke. The piece actuating member 47 is reciprocated alternately based on a signal from a detector (not shown) provided at the upper limit of the actuating rod 21a in the upper and lower cylinders 21.

Next, the resin molded product take-out operation and the take-out method of the resin molded product take-out machine 3 configured as described above will be described. As shown in FIG. 2, the front and rear movable body 11 operates so that the operating rod 13 extends. The front and rear cylinders 13 are moved to the fixed platen 1 side. Further, the vertical movable body 19 is moved to a lower position by the vertical cylinder 21 that moves backward so that the operating rod 21a contracts. Further, the piece member 45 is moved to the left as illustrated by the operation of the piece actuating member 47, and the swing arm 41 is kept in a position between the contact portions 45a and 45b.

In this state, the chuck rod 37 enters in a vertical state between a mold (not shown) having a chuck 39 attached to the lower end of the chuck rod 37 and is made to be opposed to a mold holding a resin molded product. .

Next, in the above state, the front and rear cylinders 13 are moved backward to reduce the operating rod 13a, whereby the front and rear movable body 11 is moved away from the fixed platen 1, and the chuck 39 is held in the mold. After being brought close to the molded product, the resin molded product is held by the chuck 39. After the above operation, the front and rear cylinders 13 are operated to extend the operating rod 13a to move the front and rear movable body 11 in the direction away from the mold (the direction approaching the fixed platen 1) and the resin molding held by the chuck 39. Remove the product from the mold.

Next, when the upper and lower movable body 19 is moved upward by operating the upper and lower cylinders 21 to extend the operating rod 21a in the above state, the other arm portion of the rotating arm 27 is connected to the swing arm 41. As a result of the upward movement of the vertically movable body 19, the support shaft 25 is rotated in the counterclockwise direction shown in the figure. At this time, the contact position of the metal wire 33 on the outer peripheral surface of the disk member 23 is displaced with the rotation of the rotation arm 27, and the rotating body 29 is rotated in accordance with the displacement peripheral length to vertically move the chuck rod 37. Keep in shape. (See Figure 5)

By the above operation, the vertical movable body 19 is moved to the upper movement limit position and the swing arm 41 and the rotating arm 27 are linearly moved in the vertical direction, specifically, the upper movable body 19 is provided at the upper movement limit position. The operating direction of the upper and lower cylinders 12 is switched based on the signal from the detector or the detector provided at the operating limit position of the upper and lower cylinders 21 so that the operating rod 21a is retracted.

At this time, the piece actuating member 47 is moved backward at the switching timing to move the piece member 45 to the right in the figure, and one abutting portion 45a is brought into contact with the actuating shaft 41a so that the swing arm 41 is moved to the vertical line. By forcibly rotating clockwise in the illustrated direction at a slight angle, the rotation of the rotating arm 27 in the counterclockwise direction illustrated in FIG. (See Figs. 6 and 7)

That is, if the operating direction of the upper and lower cylinders 12 is switched at the timing when the vertical movable body 19 moves to the upper limit position and the swing arm 41 and the rotary arm 27 become linear in the vertical direction, the rotary arm 27 is not necessarily The rotation is not necessarily counterclockwise as shown in the figure, but the rotation direction is clockwise and the original position may be returned, and the chuck 39 may not be moved out of the resin molding machine.

In order to avoid this, when the up-and-down movable body 19 moves to the upper limit position and switches the operating direction of the up-and-down cylinder 12, the swing arm 41 is forcibly rotated in the clockwise direction shown in the figure by the moving piece member 45. The rotation of the rotation arm 27 with respect to the counterclockwise direction shown in the figure is continued.

Then, as the vertical movable body 19 is moved downward as the operating direction of the upper and lower cylinders 21 is switched, the rotating arm 27 is further rotated in the counterclockwise direction shown in the figure to release the chuck 39 from the resin molding machine. Move to position. Also at this time, the contact position of the metal wire 33 on the outer peripheral surface of the disk member 23 is displaced with the rotation of the rotation arm 27, and the rotating body 29 is rotated in the opposite direction according to the displacement peripheral length. By doing so, the chuck rod 37 is kept vertical. Further, the chuck 39 moves in an elliptical arc between the molds of the resin molding machine and between the molded product release positions, thereby overcoming the safety door and tie bar of the resin molding machine and taking out the resin molded product. (See Figure 8)

  The chuck 39 moved to the molded product release position releases the resin molded product and completes the resin molded product removal operation.

  Next, when the next molding by the resin molding machine is completed and the mold is opened, the rotary arm 27 is rotated in the opposite direction to enter between the molds in which the chuck 39 is opened. Let

That is, when the vertical cylinder 21 is actuated to extend the operating rod 21 a and the vertical movable body 19 is moved upward, the rotating arm 27 connected to the swing arm 41 is moved along with the upward movement of the vertical movable body 19. The support shaft 25 is rotated clockwise as shown in the figure. At this time, the contact position of the metal wire 33 on the outer peripheral surface of the disk member 23 is displaced with the rotation of the rotation arm 27 in the same manner as described above, and the chuck 29 is rotated by rotating the rotating body 29 according to the displacement peripheral length. The rod 37 is kept vertical. (Shown in FIG. 9)

By the above operation, the vertical movable body 19 is moved to the upper movement limit position and the swing arm 41 and the rotating arm 27 are linearly moved in the vertical direction, specifically, the upper movable body 19 is provided at the upper movement limit position. The operation direction of the upper and lower cylinders 12 is switched based on the signal from the detector or the detector provided at the operation limit position of the upper and lower cylinders 21 to return. At this time, the piece actuating member 47 is moved forward at the switching timing to move the piece member 45 to the left in the figure, the other abutting portion 45b is brought into contact with the actuating shaft 41a, and the swing arm 41 is moved to the vertical line. By forcibly rotating counterclockwise as shown in the figure at a slight angle, the rotating arm 27 is biased to rotate in the clockwise direction as shown. (See Figure 10)

Then, as the up / down movable body 19 is moved downward as the operation direction of the upper / lower cylinder 21 is switched, the rotating arm 27 is further rotated clockwise as shown in the figure, and the chuck 39 enters between the molds in the resin molding machine. Let Also at this time, the contact position of the metal wire 33 on the outer peripheral surface of the disk member 23 is displaced with the rotation of the rotation arm 27, and the rotating body 29 is rotated in the opposite direction according to the displacement peripheral length. By doing so, the chuck rod 37 is kept vertical. (The rotation direction is shown by a broken line in FIG. 5.)

  In this embodiment, by moving the vertical movable body 19 up and down, the rotating arm 27 can be swung between the molds of the resin molding machine and the molded product release position outside the resin molding machine to take out the resin molded product. In addition, the structure of the apparatus can be simplified to reduce the size and weight.

In the molded product take-out machine having a structure in which the vertical movable body 19 moves up and down to rotate the rotary arm, the rotary arm 27 rotates when the vertical movable body 19 is moved down after being moved up. Although the direction may become unstable and cannot be reliably rotated in a desired direction, in this embodiment, the swing arm 41 connected to the rotation arm 27 is moved by the piece member 45. Accordingly, the chuck 39 can be moved to a desired position by reliably rotating the rotary arm 27 in the target direction.

In the above description, the metal wire 33 is used as a rotational force imparting member, and the one end is wound around the disk member 23 and then wound around the rotating body 29, and the other end is then rotated to the disk member 23. As shown in FIG. 11, a toothed belt (timing belt) 85 is bridged on a disk member 81 and a rotating body 83 having the same outer shape and a large number of teeth formed on the outer peripheral surface. It is good also as the structure which carried out.

In this example, since the toothed disk member 81 is fixed to the up and down movable body 19 so as not to rotate, the disk member 81 is accompanied with the up and down movement of the up and down movable body 19 and the turning operation of the turning arm 27. The meshing portion (contact point position) of the toothed belt 85 is displaced, and the chuck rod 37 is maintained in a vertical state by rotating the rotating body 83 in a required direction according to the displacement circumferential length.

DESCRIPTION OF SYMBOLS 1 Fixed platen 3 Resin molded product take-out machine 5 Main body frame 7 Front and rear frame 9 Rail 11 Front and rear movable body 13 Front and rear cylinder 13a Actuating rod 13b Stopper 15 Upper and lower frame 17 Rail 19 Vertical movable body 21 Upper and lower cylinder 21a Actuating rod 23 Disc member 25 Support shaft 27 Rotating arm 29 Rotating body 31 Mounting member 33 Metal wire 37 as a rotational force imparting member Chuck rod 39 Chuck 41 Peristaltic arm 41a Actuating shaft 43 Rotating direction control means 45 Piece members 45a and 45b Abutting portion 47 Piece actuating member 81 Disk member 83 Rotating body 85 Toothed belt (timing belt)

Claims (8)

A front and rear movable body that is movably supported by a front and rear frame that extends in a direction that coincides with the central axis with respect to a main body frame that is fixed to the upper surface of a fixed platen of a resin molding machine, and that is reciprocated by a front and rear operation member;
An up-and-down movable body supported so as to be movable in the up-and-down direction with respect to an up-and-down frame provided on the front and rear traveling body, and reciprocated by an up-and-down moving member;
A rotating arm having two arms supported to be rotatable about a support shaft with respect to the vertically movable body;
A disk member whose center is fixed to the vertical movable body so as to coincide with the axis of the support shaft;
A rotating body that is rotatably supported at the tip of one arm of the rotating arm;
A rotational force applying member that is fixed to the disk member and connected to the rotating body;
A chuck rod fixed to the support shaft of the rotating body, and attached with a chuck for holding a resin molded product at the bottom;
A peristaltic arm whose one end is pivotally supported at the lower part of the vertically movable member and whose other end is pivotally supported by the other arm of the pivot arm;
A rotation direction control means for controlling the rotation direction of the rotation arm by swinging the swing arm;
Resin molded product take-out machine equipped with. In claim 1, the rotation direction control means comprises a piece member having a pair of abutting portions that abut against the swing arm, and a piece actuating member that reciprocates the piece member in a direction orthogonal to the central axis. Resin-molded product take-out machine that operates the piece actuating member to move the piece member when the vertically movable body is moved to the upper position and urges the swing arm to rotate in the direction opposite to the rotation direction of the rotation arm. . 3. The resin molded product take-out machine according to claim 2, wherein the rotation direction control means is operated based on a signal from a detector that detects that the vertically movable body has moved to the upper position. The resin molded product take-out machine according to claim 1, wherein the vertical stroke of the vertical movable body is set to the length of the other arm portion and the length of the swing arm in the rotating arm. The rotational force applying member according to claim 1, wherein one end of the rotational force applying member is fixed to the disk member, wound around the outer peripheral surface, wound around the rotating body, and wound at the other end. A resin molded product take-out machine that is a metal wire that is stretched over and fixed. 2. The resin molded product take-out machine according to claim 1, wherein the rotational force applying member is a belt member that is stretched over the disk member and the rotating body and partially fixed to the disk member. 2. The resin molded product take-out machine according to claim 1, wherein the rotational force imparting member is a disk member having a large number of teeth formed on the outer peripheral surface and a toothed belt spanning the rotating body. The resin molded product take-out machine according to claim 1, wherein the vertically moving member is a cylinder member.

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