JP6008722B2 - Mold take-out device - Google Patents

Description

  The present invention relates to a molded product take-out apparatus that takes a molded product out of a mold of a molding machine. In the present invention, the molded product is a synthetic resin material and a metal material, and includes both a product including a sprue and a runner or a sprue and a runner excluding the product. In addition to the product take-out operation, the take-out operation of the sprue and runner separated from the product in the mold is included.

As a molded product take-out device, for example, the first traveling body supported so as to move on a main body frame extending in a direction orthogonal to the central axis of the molding machine extends in a direction corresponding to the central axis. A first frame is provided to support the second traveling body so as to move on the first frame, and the second traveling body has an axis in the vertical direction, and a chuck for holding a molded product is provided below. A structure in which a molded product is taken out by supporting the frame so as to move up and down and controlling the movement of the chuck in three orthogonal axes is generally known.

The molded product take-out device having such a configuration requires a driving source such as an electric motor that moves the first traveling body, the second traveling body, and the upper and lower frames in the respective directions, and the apparatus itself is increased in size and weight. As a result, it is difficult to shorten the time for taking out the molded product, and the cost is increased.

In order to solve the above problem, the applicant of the present application has proposed a molded product take-out apparatus shown in Patent Document 1. The molded product take-out apparatus is supported by a front and rear frame extending in a direction coinciding with the central axis with respect to a main body frame fixed to an upper surface of a fixed platen of the molding machine, and is reciprocated by a front and rear operation member. The vertical movable body supported so as to be movable in the vertical direction with respect to the vertical frame provided on the front and rear movable body is reciprocated by the vertical movement member, and the two arms are arranged around the support shaft provided on the vertical movable body. The rotating arm is supported so as to rotate, and the disk member is fixed to the vertical movable body so that the center coincides with the axis of the support shaft, and the rotating body is provided at the tip of one arm portion of the rotating arm. A chuck rod in which a rotating force applying member whose end is fixed to a disk member is connected to a rotating body, and a chuck for holding a molded product is attached to the lower portion of the supporting shaft of the rotating body. Fixed The swing arm is pivotally supported so that one end of the swing arm pivots to the lower part of the vertically movable member and the other end pivots to the other arm of the pivot arm. Thus, the turning direction control means controls the turning direction of the turning arm.

However, in the above-described molded product take-out apparatus, the movement trajectory of the chuck when the molded product is taken out from the mold position of the molding machine to the open position set on the operation side or the non-operation side of the molded product is a non-elliptical arc trajectory. Therefore, there is a problem that the molded product falls or the chuck is damaged due to contact with the tie bar or safety door of the molding machine during the movement of the chuck.

In order to solve the above problem, when installing the molded product take-out machine in the molding machine, it is necessary to adjust the installation position such as the height of the molded product take-out machine with respect to the fixed platen of the molding machine. Was bad. Particularly in the molded product take-out device, in order to take out various molded products having different shapes and sizes, it is necessary to replace the chuck with a size or shape corresponding to the size of the molded product, etc. At that time, the installation position with respect to the fixed platen must be adjusted so that the chuck does not come into contact with the tie bar or the safety door, and the installation workability is poor.

Further, as described above, in the molded product take-out machine in which the chuck moves along the non-elliptical arc locus, the height of the open position on the operation side and the non-operation side and the distance from the molding machine are not constant. It was possible to set only on either side. For this reason, there is a problem that is restricted in laying out a large number of molded product take-out apparatuses in a factory.

JP 2011-255583 A

  The problem to be solved is that the chuck moves in a non-elliptical arc locus, so that when the molded product is taken out, the chuck interferes with the tie bar and safety door of the molding machine and the molded product falls from the chuck, resulting in a takeout failure. Or the chuck may be damaged. In addition, every time the molded product to be taken out is changed, the installation position of the molding machine must be adjusted so that the chuck gets over the molding machine tie bar and safety door, which takes time and labor, and the workability is poor. It is in.

According to the first aspect of the present invention, the chuck for holding the molded product molded by the molding machine is moved from the mold side to the open position set on either the operation side or the counter-operation side of the molding machine and taken out. In a product take-out device, a frame that extends in a direction that coincides with the central axis of the molding machine and that is provided on a fixed platen of the molding machine, and a lift that is supported so as to be lifted and lowered to an upper and lower frame provided at a required height on the frame A body, an electric motor provided on the elevating body with an axis in a direction coinciding with the central axis, and a balance means provided between the frame and the elevating body for receiving a load acting on the elevating body, The base end side is fixed to the rotating shaft of the electric motor, the peristaltic arm is swung as the electric motor is driven, the disk member fixed to the elevating body with the rotating shaft and the axis aligned with each other, and the above Perv A rotating body that is pivotally supported so as to rotate at the front end portion thereof, a rotational force applying member that is provided between the disk member and the rotating body, and an end portion that is pivotally supported so that one end portion thereof is pivoted to the frame. A link arm that is pivotally supported so as to pivot to the base end of the peristaltic arm, and an attachment arm that is fixed at the top to the peristaltic shaft that supports the rotating body and to which a chuck is attached at the bottom. As the electric motor is driven, the swing arm is swung between the open position and the mold side , and the lifting and lowering body is lifted and lowered while receiving the load acting on the lifting body by the balance means to swing the link arm. As the peristaltic arm is perturbed, the rotating member is attached by the disk member and the rotational force applying member so that the arm is always in a vertical state, and the chuck is moved between the open position and the mold side in an elliptical arc locus. about The most important feature.

According to a fifth aspect of the present invention, there is provided a molded product take-out device that takes out a chuck that holds a molded product molded by the molding machine from the mold side to an open position set on either the operation side or the non-operation side of the molding machine. A movable body that is supported so as to extend in a direction that coincides with the central axis of the molding machine and to move in a direction that coincides with the central axis on a frame provided on a fixed platen of the molding machine, A drive member that moves in a direction that coincides with the central axis, a lift that is supported so as to move up and down on an upper and lower frame provided at a required height on the movable body, and a direction that coincides with the central axis on the lift An electric motor provided with an axis, a balance means provided between the frame and the lifting body for receiving a load acting on the lifting body, and a base end side is fixed to the rotating shaft of the electric motor, Electric motor drive A rotating body that is axially supported so as to rotate the distal portion of the disc member and the pivotal arm and the swing arm, the rotation axis and the axis relative to the lifting body is fixed in agreement to be swinging with the,
A rotational force applying member provided between the disk member and the rotating body, and a shaft such that one end is pivotally supported by the movable body and the other end is pivoted by the base end of the peristaltic arm. A link arm that is supported, and a mounting arm that has an upper part fixed to a peristaltic shaft that pivotally supports the rotating body, and a chuck attached to the lower part. The link member is swung up and down while swinging between the sides, and the link arm is swung while the load acting on the lift member is received by the balance means and the disk member and the rotational force applying member are swung The main feature is to move the chuck along an elliptical arc locus between the open position and the mold side by swinging the rotating body so that the mounting arm is always vertical .

  The present invention moves the chuck along an elliptical trajectory so that the chuck can reliably get over the tie bar and safety door of the molding machine during the removal operation of the molded product, thereby preventing the occurrence of defective product removal and damage to the chuck. be able to. Further, even when the molded product to be taken out is changed, the chuck can be moved over the tie bar and the safety door, and the work can be simplified.

It is a whole perspective view which shows the outline of a molded article taking-out apparatus. It is a disassembled perspective view of a molded article removal apparatus. It is a front view of a molded product removal apparatus. It is front explanatory drawing which shows the standby state in the open position side. It is front explanatory drawing which shows the state in the middle from an open position side to a top dead position. It is front explanatory drawing which shows the movement state in a top dead position. It is front explanatory drawing which shows the state in the middle from a top dead position to the metal mold | die side. It is explanatory drawing which shows the movement locus | trajectory of a chuck | zipper.

As the electric motor is driven, the swing arm is swung between the open position and the mold side , and the lifting and lowering body is lifted and lowered while receiving the load acting on the lifting body by the balance means to swing the link arm. As the peristaltic arm is perturbed, the rotating member is attached by the disk member and the rotational force applying member so that the arm is always in a vertical state, and the chuck is moved along the elliptical arc locus between the open position and the mold side. This is the best embodiment.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 to 3, the molded product removing device 1 is fixed to the upper surface of a stationary platen 3 in a molding machine (not shown). The molding machine is clamped on the tie bar 3a that supports a movable plate (not shown) to which a movable mold is attached so as to reciprocate with respect to the central axis of the molding machine, and on the operation side and the counter-operation side. A safety door (not shown) for shielding the mold is provided.

  The base 5 of the molded product take-out apparatus 1 is fixed near the operation side or the non-operation side of the upper surface of the fixed platen 3 described above, and the upper part is opened in the front-rear direction that coincides with the central axis of the molding machine. A front and rear frame 7 is provided which extends to the upper side of the mold with a length reaching the movable mold. A front / rear movable body 9 is supported on the front / rear frame 7 so as to move in the front / rear direction, and is reciprocated in the front / rear direction by a front / rear drive means 11 connected to the front / rear movable body 9.

As the front-rear drive means 11, for example, a feed screw (not shown) having an axis in the front-rear direction and pivotally supported so that the shaft end rotates to the front-rear frame 9 and one shaft end of the feed screw are connected. A feed screw mechanism constituted by an electric motor 11a such as a servo motor that is numerically controlled, and a pair of toothed pulleys (not shown) that are pivotally supported to rotate at the front and rear ends of the front and rear frame 7. A belt mechanism constituted by a toothed belt (not shown) spanned between each toothed pulley and an electric motor 11a such as a servomotor connected to one toothed pulley and numerically controlled, or an axis in the front-rear direction. It may be any cylinder such as a cylinder in which the rod extends with a predetermined stroke. The figure shows the longitudinal drive means 11 of the belt mechanism.

  A vertical frame 15 having a length corresponding to the vertical movement stroke of the chuck 13, which will be described later, is erected on the front / rear movable body 9, and a linear guide 17 extends in the vertical direction on the vertical frame 15. An elevating body 19 is supported by the linear guide 17 so as to move up and down. The elevating body 19 is provided with an electric motor 21 such as a numerically controlled servo motor having an axis in the front-rear direction.

  A disk member 25 such as a toothed pulley whose axial center coincides with the rotating shaft 21a of the electric motor 21 is fixed to the rising portion 19a of the elevating body 19 with a screw or the like. A swing arm 23 is fixed to the rotary shaft 21a at a position spaced from one end.

A peristaltic shaft 27 is pivotally supported at the tip of the peristaltic arm 23 so as to rotate, and the disc member is disposed at one end (the electric motor 21 side) of the peristaltic shaft 27. Rotating body 29 such as a toothed pulley whose outer diameter and axial center coincide with those of 25, and a fixing block for fixing an upper portion of mounting arm 31 (described later) to the other end of peristaltic shaft 27 so that the position can be adjusted. 33 is fixed.

  A belt 35 constituting a rotational force applying member is wound around the first and rotating bodies 25 and 29 provided at each end of the swing arm 23, and a contact position with respect to the disk member 25 as the swing arm 23 swings. Is changed, the peristaltic shaft 27 is rotated through the rotating body 29.

  The other end of the link arm 37 that is pivotally supported at the base end of the swing arm 23 so that one end of the swing arm 23 rotates at a constant angle at the center in the horizontal direction perpendicular to the front-rear direction of the front-rear movable body 9. The part is pivotally supported so as to rotate. The link arm 37 is restricted so as to rotate within a certain angle range, for example, ± 25 degrees, ± 45 degrees, ± 60 degrees with respect to the vertical line of the front-rear movable body 9.

  A chuck 13 is provided at the lower end of the mounting arm 31 with the holding surface facing the movable mold. The chuck 13 has a structure in which a number of suction pads 13b for negatively sucking a molded product (not shown) are attached to the chuck plate 13a, or a plurality of grips for holding the molded product (not shown) on the chuck plate 13a. Any of the structures to which members (not shown) are attached may be used. The figure shows the chuck 13 constituted by the suction pad 13b.

  The lifting body 19 is provided with a balancing cylinder 39 as a balancing means having an axis in the vertical direction, and the tip of the rod 39 a is fixed to the front and rear movable body 9. When the lifting body 19 is raised, the balancing cylinder 39 supplies compressed air pressure having a pressure corresponding to the weight of the lifting body 19, the electric motor 21, the swing arm 23, the mounting arm 31, etc., for example, into the positive pressure chamber. At the same time, the air in the back pressure chamber is exhausted to receive the load accompanying the rise so that the elevating body 19 can be raised in an unloaded state.

Further, when the elevating body 19 is lowered, the balancing cylinder 39 generates a compressed air pressure of a pressure corresponding to the total weight of the elevating body 19, the electric motor 21, the swing arm 23, the mounting arm 31, etc. The air is supplied into the room and the air in the positive pressure room is exhausted to receive the load accompanying the lowering, so that the elevating body 19 can be lowered in an unloaded state.

Next, the operation of taking out the molded product by the molded product taking-out apparatus 1 configured as described above will be described.
For example, as shown in FIG. 4, when a mold opening signal when molding is completed is input from the molding machine with the chuck 13 in the open position of the molded product, the electric motor 21 is driven and controlled, and the swing arm 23 is driven. Is moved clockwise as shown in the figure. The standby position of the chuck 13 may be a top dead position (described later) in which the swing arm 23 and the link arm 37 are in a vertical state.

At this time, since the rotation of the link arm 37 outside the above range is restricted, the elevating body 19 is pushed upward by the swing of the swing arm 23 in the initial swing of the swing arm 23 with respect to the clockwise direction. Then, the link arm 37 swings counterclockwise as illustrated in accordance with the swing of the swing arm 23 and the lifting of the lifting body 19 to continue the lifting of the lifting body 19.

Further, since the disk member 25 is fixed to the elevating body 19, the contact position of the belt 35 with respect to the disk member 25 is displaced in accordance with the swing of the swing arm 23, and a rotational force is applied to the rotating body 29. The peristaltic shaft 27 is rotated counterclockwise as shown. Thus, the mounting arm 31 is oscillated so as to always maintain a vertical state by the oscillating shaft 27 that rotates counterclockwise. (See Figure 5)

When the elevating body 19 is moved to the upper position of the upper and lower frames 15 with the above operation, the link arm 37 is swung so as to be in a straight line with respect to the swing arm 23 that is swung so as to coincide with the vertical line. The chuck 13 is moved to the top dead position. At that time, the chuck 13 is moved along an elliptical arc locus from the open position to the top dead position, so that it can get over the tie bar 3a and the safety door of the molding machine. (See Figure 6)

Thereafter, when the swing arm 23 is further swung from the vertical state to the mold side in the clockwise direction shown in the drawing as the electric motor 21 is driven, the lifting body 19 is moved along with the swing of the swing arm 23 in the clockwise direction shown in the figure. Is lowered from the upper position. At this time, the link arm 37 is further swung from the vertical state to the counterclockwise direction shown in the figure by the inertial force of the swinging arm 23 that swings in the clockwise direction, so that the lifting body 19 can be lowered. (See Figure 7)

The contact position of the belt 35 with respect to the disk member 25 is further displaced in accordance with the swinging of the swing arm 23 in the clockwise direction shown in the figure and the lowering of the lifting body 19, thereby applying a rotational force to the rotating body 29. Rotate counterclockwise. Thus, the mounting arm 31 is oscillated so as to always maintain a vertical state by the oscillating shaft 27 that rotates counterclockwise. At that time, the chuck 13 moves along an elliptical arc locus from the top dead position to the take-out position and enters between the molds opened. (See Figure 8)

Then, after the chuck 13 is moved to the take-out position or in synchronism with the movement of the chuck 13 with respect to the take-out position, the electric motor 11a is driven to move the front and rear traveling body 9 toward the movable mold where the mold is opened. After being held relative to the molded product held in the movable mold, the molded product projected by the projecting operation of the molded product by the molding machine is held by the chuck 13.

After the above operation, the electric motor 11a is driven in reverse to move the front and rear traveling body 9 in a direction away from the movable mold, or the electric motor 21 is driven in reverse to synchronize with the operation to move the peristaltic arm 23 as described above. When it is swung in the counterclockwise direction shown in the opposite direction, the lifting body 19 moves upward in the same manner as the above action, and the link arm 37 is swung in the clockwise direction as shown.
At this time, the contact position of the belt 35 with respect to the disk member 25 is displaced in the opposite direction to apply a rotational force to the rotating body 29 and rotate the peristaltic shaft 27 in the clockwise direction so that the mounting arm 31 is always in a vertical state. Sway so that As a result, the chuck 13 holding the molded product is moved along the elliptical arc locus from between the molds toward the top dead position, and is separated from the molds. (Refer to FIG. 7, the peristaltic direction of each arm is indicated by a one-dot chain line.)

Further, when the peristaltic movement of the peristaltic arm 23 is continued by the reverse rotation of the electric motor 21, the elevating body 19 moves to a position above the upper and lower frames 15, and the peristaltic arm 23 and the link arm 37 are linearized. The chuck 13 is moved to the top dead position so as to get over the tie bar 3a and the safety door of the molding machine. (Refer to FIG. 6, the peristaltic direction of each arm is indicated by a one-dot chain line.)

Further, when the swing arm 23 is swung from the vertical state to the open position side in the counterclockwise direction by the reverse drive of the electric motor 21, the elevating body 19 is lowered from the upper position as the swing arm 23 is swung. At this time, the link arm 37 is further swung from the vertical state to the mold side in the clockwise direction shown in the figure by the inertial force of the swing arm 23 swinging in the counterclockwise direction so that the elevating body 19 can be lowered.

Then, as the swing arm 23 is swung counterclockwise and the lifting and lowering body 19 is lowered, the attachment arm 31 displaces the contact position with the disk member 25 as the swing arm 23 swings. The rotary body 29 rotated by 35 is oscillated so as to always maintain a vertical state. Accordingly, the chuck 13 is moved from the top dead position to the open position along the elliptical arc locus from the open position to the open position. (Refer to FIG. 5, the peristaltic direction of each arm is indicated by a one-dot chain line.)

When the chuck 13 is moved to the open position shown in FIG. 4 (the swing direction of each arm is indicated by a one-dot chain line), the holding of the molded product by the chuck 13 is released. The product is released to a product gate cutting device (both not shown).

  When the swing arm 23 swings, and therefore when the lift body 19 moves up and down, the lift body 19, the electric motor 21, the swing arm 23, the mounting arm 31, etc. with respect to the positive pressure chamber or the back pressure chamber of the balancing cylinder 39. Compressed air pressure with a pressure corresponding to the total weight is selectively supplied and exhausted, and a load acting on the lifting body 19 is received. Thereby, the lifting load of the lifting body 19 on which the weight of the electric motor 21, the peristaltic arm 23, the mounting arm 31 and the like acts can be reduced and moved up and down at a high speed, and the low-torque small and lightweight electric motor 21 can be moved. Use to move the chuck 13

  In the present embodiment, the swing arm 23 is swung by one electric motor 21 so that the mounting arm 31 can always be moved vertically so that the chuck 13 gets over the tie bar 3a and the safety door. The moving trajectory can be a symmetrical elliptical arc trajectory on the open position side and the mold side, and the moving trajectory of the chuck 13 can be easily predicted as compared with the case of a non-elliptical arc trajectory, and the work for attaching the molded product take-out machine to the molding machine is performed. Can be simplified.

DESCRIPTION OF SYMBOLS 1 Molded product taking-out apparatus 3 Fixed platen 3a Tie bar 5 Base 7 Front / rear frame 9 Front / rear movable body 11 Front / rear drive means 11a Electric motor 13 Chuck 13a Chuck plate 13b Adsorption pad 15 Upper / lower frame 17 Linear guide 19 Lifting body 21 Electric motor 21a Rotating shaft 23 Peristaltic arm 25 Disk member 27 Peristaltic shaft 29 Rotating body 31 Mounting arm 33 Fixing block 35 Belt 37 constituting rotational force applying member Link arm 39 Balancing cylinder as balancing means

Claims (8)

In the molded product take-out device for removing the chuck that holds the molded product molded by the molding machine from the mold side to the open position set on either the operation side or the non-operation side of the molding machine,
A frame that extends in a direction that coincides with the central axis of the molding machine and that is provided on the stationary platen of the molding machine;
A lifting body supported so as to be lifted and lowered by an upper and lower frame provided at a required height on the frame;
An electric motor provided on the lifting body with an axis in a direction coinciding with the central axis;
A balancing means provided between the frame and the lifting body for receiving a load acting on the lifting body;
A base arm side fixed to the rotating shaft of the electric motor, and a peristaltic arm that is peristalized as the electric motor is driven;
A disk member fixed to the lifting body in a state in which the rotation shaft and the shaft center are aligned, and a rotation body that is pivotally supported to rotate at the tip of the peristaltic arm;
A rotational force applying member provided between the disk member and the rotating body;
A link arm that is pivotally supported so that one end thereof pivots to the frame and pivotally supported so that the other end pivots to the base end of the peristaltic arm;
An attachment arm in which an upper part is fixed to a peristaltic shaft that supports the rotating body and a chuck is attached to the lower part;
With
As the electric motor is driven, the swing arm is swung between the open position and the mold side , and the lifting and lowering body is lifted and lowered while receiving the load acting on the lifting body by the balance means to swing the link arm. As the peristaltic arm is perturbed, the rotating member is attached by the disk member and the rotational force applying member so that the arm is always in a vertical state, and the chuck is moved along the elliptical arc locus between the open position and the mold side. Mold take-out device. In claim 1,
One end of the link arm is pivotally supported so as to rotate at a position coinciding with the central axis of the rotation axis of the frame, and the molded product take-out device has symmetrical movement paths of the chuck on the open position side and the mold side. In claim 1,
The balancing means is a molded product take-out device that is a cylinder that selectively supplies and discharges a fluid having a pressure corresponding to a load applied to the lifting body to the positive pressure chamber and the back pressure chamber to receive the load . In claim 1,
The rotational force applying member includes a disk member and a belt that is stretched over the rotating body, and is a molded product take-out device that rotates the rotating body by displacing the contact position with the disk member as the peristaltic arm swings . In the molded product take-out device for removing the chuck that holds the molded product molded by the molding machine from the mold side to the open position set on either the operation side or the non-operation side of the molding machine,
A movable body that extends in a direction that coincides with the central axis of the molding machine and is supported so as to move in a direction that coincides with the central axis on a frame provided on a stationary platen of the molding machine;
A drive member that moves the movable body in a direction that coincides with the central axis;
An elevating body supported so as to be raised and lowered by an upper and lower frame provided at a required height on the movable body;
An electric motor provided on the lifting body with an axis in a direction coinciding with the central axis;
A balancing means provided between the frame and the lifting body for receiving a load acting on the lifting body;
The base end side is fixed to the rotating shaft of the electric motor, the peristaltic arm is swung as the electric motor is driven, the disk member whose rotating shaft and the axis are aligned and fixed with respect to the lifting body, and the above A rotating body pivotally supported to rotate at the tip of the peristaltic arm;
A rotational force applying member provided between the disk member and the rotating body;
A link arm that is pivotally supported so that one end thereof is pivoted to the movable body and pivotally supported so that the other end pivots to the base end of the peristaltic arm;
An attachment arm in which an upper part is fixed to a peristaltic shaft that supports the rotating body and a chuck is attached to the lower part;
With
As the electric motor is driven, the swing arm is swung between the open position and the mold side, and the lifting and lowering body is lifted and lowered while receiving the load acting on the lifting body by the balance means to swing the link arm. As the peristaltic arm is perturbed, the rotating member is attached by the disk member and the rotational force applying member so that the arm is always in a vertical state, and the chuck is moved along the elliptical arc locus between the open position and the mold side. Mold take-out device. In claim 5,
One end of the link arm is pivotally supported so as to rotate at a position coinciding with the central axis of the rotating shaft of the movable body, and the molded product take-out device with symmetrical movement trajectories of the chuck on the open position side and the mold side . In claim 5,
The balancing means is a molded product take-out device that is a cylinder that receives a load by selectively supplying and exhausting a fluid having a pressure corresponding to the load applied to the lifting body to the positive pressure chamber and the back pressure chamber . In claim 5,
The rotational force applying member includes a disk member and a belt that is stretched over the rotating body, and is a molded product take-out device that rotates the rotating body by displacing the contact position with the disk member as the peristaltic arm swings .

Images