JP3040076B2 - Transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer device which is mounted on an existing plastic injection molding machine and transfers a molded product and its waste material (recycled material) to another position.

[0002]

2. Description of the Related Art Conventionally, in an injection molding process of a plastic molded article, an injection molding machine continuously operates to produce a molded article while operating in a predetermined cycle. However, the injection molding is completed and the mold is separated. At this time, since the movable mold plate is separated from the fixed mold plate, a molded product or the like molded in the mold is taken out using the molded product take-out device and transferred to the outside of the molding machine.

[0003] As such a molded product take-out apparatus, there is, for example, a molded product take-out robot disclosed in Japanese Utility Model Laid-Open No. 4-79081. The robot for taking out a molded product has a function of transferring the molded product taken out of the mold by the molded product chuck device to a molded product storage box arranged on one side of the molding machine.

[0004] As an application of the frame structure of a molded product take-out robot disclosed in Japanese Utility Model Laid-Open No. 4-79081, a molded product take-out robot as shown in FIG. 6 is used. FIG. 6 is a perspective view showing the robot for taking out a molded product.
A fixed-side slide rail 31 is mounted thereon, and a movable-side slide rail 32 is mounted on a movable-side mold plate 39 of the same mold.

A traverser 33 is provided between two sliders 34 running on the fixed slide rail 31 and the movable slide rail 32, and two chuck sliders 35 are attached to the traverser 33. The chuck slider 35 is provided with a chuck shaft 36 that moves up and down by a cylinder 40, and a chucking claw 37 is attached to the tip of the chuck shaft 36.

The fixed-side slide rail 31 is a fixed-side mold plate 3
8, the movable slide rail 32 is fixed on the movable mold platen 39, and the movable slide rail 32 moves with the movement of the movable mold plate 39. Therefore, the movable slide rail 32 moves toward and away from the fixed slide rail 31.

Further, the slider 34 is locked on a part of a toothed belt 42 laid over the motor and the gear 41,
A mechanism is provided for driving the slider 34 along the fixed slide rail 31 and the movable slide rail 32 by rotating the toothed belt 42 with a motor.

In the molding operation by the injection molding machine, when the injection molding is completed and the mold is separated, the movable mold plate 3
Since 9 moves away from the fixed mold platen 38, the molded product and the runner portion formed inside the mold are respectively gripped and taken out by two chucking claws 37 which are moved up and down by the cylinder 40, and are ejected by the movement of the slider 34. After being transported to the side of the molding machine, the molded product and the runner portion are put into the molded product storage box and waste material storage box installed on the side.

[0009]

However, the robot for taking out a molded product shown in FIG.
Each chucking claw 37 grasps and transports the same in the same direction. Therefore, during operation, when the chuck slider 35 moves to the ends of the fixed slide rail 31 and the movable slide rail 32,
Since the weights of the two sliders 34, the traverser 33, the two chuck sliders 35, the cylinder 40, the chuck shaft 36, and the chucking claws 37 are all added to the vicinity of the tip of the rail, a cantilever state is obtained. , Load balance is poor. Regarding this point, Jira-Kaihei-790
The same applies to the robot for taking out a molded product disclosed by reference numeral 81.

For this reason, there is a high possibility that deformation or wear will occur in a rail portion or the like to which a load is intensively applied during long-term use, and there is a problem in durability. In addition, since this take-out robot is used by attaching to a mold plate of an injection molding machine, a large load applied to a specific portion may adversely affect the mold and the injection molding machine itself.

For example, even in the case of a small injection molding machine, about 1
Since the transfer width of about m is required, and in the case of a large injection molding machine, the transfer width may exceed 2 m, the influence of the above-mentioned uneven load cannot be ignored. The fixed slide rail 31, the movable slide rail 32, and the like to which a large load is applied need to have a structure with high rigidity so as to withstand the load, so that the weight tends to be large.

On the other hand, there is an increasing demand for a higher transfer speed and a higher transfer position accuracy in the transfer of molded articles, and in order to realize this, the weight of the movable part is reduced and the inertia is reduced. It is necessary to reduce the influence of. However, it is extremely difficult to satisfy the above-mentioned improvement in rigidity and weight reduction at the same time.

Further, waste materials such as a runner portion taken out of the injection molding machine are usually pulverized into granules, mixed with raw materials at a predetermined ratio, and used again in the injection molding machine. For this reason, a pulverizer that pulverizes waste materials into granules and a mixer that mixes the granular waste materials and raw materials are used. In parallel with the injection molding process, the pulverization and mixing operations of the waste materials are efficiently performed. Requires that the crusher and the mixer be installed near the injection molding machine.

However, the molded article taking robot disclosed in Japanese Utility Model Laid-Open No. 4-79081 and the molded article taking robot shown in FIG. 6 are designed to grip a molded article or the like by a chucking mechanism and transfer it in the same direction. The product storage box and waste material storage box must be installed side by side on one side of the injection molding machine. For this reason, it is not possible to secure a space for installing the crusher and the mixer near the waste material storage box, and it must be installed in a remote place. In addition, it cannot be performed efficiently in parallel with the injection molding process. In addition, a place for temporarily storing the extracted waste materials is required.

The problem to be solved by the present invention is to provide a transfer device which can transfer a molded article and waste material to different positions, has a good load balance during the transfer operation, and has excellent durability. It is in.

[0016]

In order to solve the above problems SUMMARY OF THE INVENTION The present onset Ming, attached to the mold platen of an injection molding machine, the injection molding
Their respective take out the molded product, and waste material from the mold of form machine
A transfer feeder you transferred to different positions, the injection molding
The machine attached to each of the fixed and movable
Attachment member, disposed between the attachment members and
2 moves in the direction intersecting with the moving direction of the movable mold
Up and down on each of the two holding members and the two holding members
The article gripping tool provided in the function, based on the mold
The two holding members are moved in different directions.
A moving mechanism, wherein the moving mechanism includes the two holding units.
An annular belt body stretched along the moving direction of the material,
And a drive mechanism for rotating the annular belt body in the forward and reverse directions.
Then, one of the two holding members is attached to the annular base.
To the parallel part on one side of the
To the parallel part on the other side, and at least one
Disengagement hand for disengaging one of the holding members and the annular belt body
A step is provided.

The molded article and the waste material are moved in different directions.
Since the transfer means is provided for transferring to another position , the load applied to the apparatus is dispersed, and the load balance is improved.
In addition, since the molded article and the waste material can be transferred to different positions and stored separately, a space for installing another device near the waste material storage position can be secured.

Further, the transfer device of the present invention, attached to the mold platen of an injection molding machine, a transfer device for transferring from the mold of the injection molding machine to moldings and take out the waste material, respectively which different positions , Fixed-side mold plate and movable-side mold of the injection molding machine
A mounting member mounted on each of the boards, two holding members disposed between the mounting members and moving in a direction intersecting with the moving direction of the movable die board , and the two <br>/> includes a respective holding member vertically movably provided article gripping tool, and a moving mechanism for moving the two holding members in the same direction with respect to the said die, the moving mechanism, before
An annular sleeve extending along the moving direction of the two holding members.
And a drive for rotating the annular belt in the forward and reverse directions.
And a moving mechanism, wherein the two holding members are connected to the annular belt.
Locks into parallel parts on one side of the body, and at least
Disengagement for disengaging one of the holding members and the annular belt body
A configuration in which means is provided may be adopted.

In the transfer apparatus of the present invention, two mounting members are used by attaching them to a movable mold plate and a fixed mold plate of an injection molding machine, respectively. In the molding operation by the injection molding machine, when the injection molding is completed and the mold separates, the movable mold plate is separated from the fixed mold plate, so that the molded product molded inside the mold and the runner part etc. The waste material is grasped and taken out by an article grasping tool provided on each of the two holding members so as to be able to move up and down. Thereafter, the two holding members are moved by the moving mechanism in different directions or in the same direction based on the mold, so that the gripped molded product and the waste material can be transferred to different positions.

That is, after the two holding members are moved in different directions with respect to the mold, the gripping state is released, and the molded product,
Waste materials can be collected at different locations,
By releasing the gripping state in order while moving the two holding members in the same direction based on the mold, it is possible to collect the molded article and the waste material at different positions. Therefore, for example, if the molded article storage box and the waste material storage box are separately installed on both sides of the injection molding machine, the molded article and the waste material can be put into the box.

During the transfer operation, the two holding members
The moving mechanism allows the mold to be moved in different directions or in the same direction based on the mold, so that the load applied to the device is well-balanced, and a biased load is not applied to a specific portion of the device. As the moving mechanism, a toothed belt driven by a motor, a chain, an air cylinder, a step motor, or the like can be used.

On the other hand, in the transfer device according to the present invention, the moving mechanism has an annular belt member stretched along the moving direction of the holding member, and a driving device for rotating the annular belt member in forward and reverse directions. Locking one of the holding members to one of the parallel portions of the annular belt body, locking the other holding member to the other of the parallel portions, and disengaging at least one of the holding members and the annular belt body. The structure may be provided with engaging / disengaging means.

With this structure of the holding member moving mechanism, two annular holding members are rotated forward and backward by the driving device, so that the two holding members can be moved with respect to the mold.
Each can be moved in opposite directions. Further, by controlling the timing of engagement and disengagement of at least one of the holding members and the annular belt body by the engagement and disengagement means, it is possible to cause a time difference between the movement operations of the two holding members. Therefore, the transfer start point and the transfer end point of each holding member can be shifted.

[0024] In the transfer device of the present invention, the moving mechanism has an annular belt member extending along the moving direction of the holding member, and a driving device for rotating the annular belt member in the forward and reverse directions. It is also possible to adopt a structure in which the two holding members are engaged with one of the parallel portions of the annular belt body, and engaging / disengaging means for engaging / disengaging at least one of the holding members and the annular belt body is provided.

If the holding member moving mechanism has such a structure, the two holding members can be rotated with respect to the mold by rotating one annular belt body forward and backward by a driving machine.
They can be moved in the same direction. Also, in the disengagement means,
By controlling the engagement and disengagement timing of the at least one holding member and the annular belt body, causing a time difference in the movement of the two holding members, the transfer start point of the support members, that shifting the transfer end point it can.

Further, in the transfer device of the present invention, a clutch mechanism for locking and releasing the holding member and the annular belt body and a control circuit for operating the clutch mechanism can be employed as the engaging and disengaging means. By adopting such a clutch mechanism and a control circuit, the holding member and the annular belt body can be locked and released quickly and reliably, so that the transfer speed is increased and the transfer position is more accurate. Can be achieved.

[0027]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view showing a transfer device, FIG. 2 is a plan view of the transfer device, FIG. 3 is a diagram illustrating the operation of an annular chain belt, and FIG. 4 is a front view of the transfer device.

As shown in FIGS. 1 and 2, the transfer device of the present embodiment includes a mounting member 3 on a fixed mold plate 1 and a movable mold plate 2 of a molding die mounted on an injection molding machine 18. , 5 are attached. The mounting members 3 and 5 are fixed by inserting bolts into mounting holes 4 and 6 provided in respective lower portions.

Accordingly, during the injection molding operation, the mounting member 3 is stationary together with the fixed mold platen 1, and the mounting member 5 is moved together with the movable mold platen 2 in the moving direction 9 and vice versa. Return to the original position.

Rails 7 and 8 are provided above the mounting members 3 and 5, respectively, and slide blocks 10, 11, 10 'and 11' movable along the rails 7 and 8 are provided. Slide shafts 12, 12 'each having a base end fixed to the slide blocks 10, 10' are inserted through the slide blocks 11, 11 '.
Stoppers 13 and 13 'are attached to the tip of 2'. In the present embodiment, the slide blocks 10,
11, 10 ', 11' and slide shafts 12, 1
2 'constitutes a holding member.

Further, as shown in FIG.
On the upper and lower sides of the parallel portion of the annular chain belt 15 stretched around 1 ', slide blocks 10, 10' are provided via rotatable shafts 22, 23 and fixed frames 24, 25.
Are locked respectively.

If the annular chain belt 15 is rotated forward and backward by rotating the gear 21 ′ by the motor 16, the slide blocks 10, 10 ′ are respectively rotated by Y →
It can be moved in Y 'direction or Y' → Y direction. The movement of the slide blocks 10, 10 'causes the slide shafts 12, 12' and the chucking blocks 14, 14 'attached thereto to move.

On the other hand, as shown in FIG. 4, the chucking block 1 attached to the slide shafts 12, 12 '
4 and 14 in the 'mounting an air cylinder 26 having a vertically movable cylinder shaft 27, the article bunch the distal end portion of the cylinder shaft 27 to grip the molded articles (or waste) 29
A chucking claw 28 as a holding tool is provided. In addition, the chucking claw 28 is automatically opened and closed by the vertical movement of the cylinder shaft 27.

Next, the operation state of the transfer device will be described. In the molding operation by the injection molding machine 18,
When the mold is separated at the stage when the injection molding is completed, the movable mold 2 moves in a direction away from the fixed mold 1,
The cylinder shaft 27 provided on the two chucking blocks 14, 14 'is lowered, and the molded product molded inside the mold and the waste material such as the runner portion are gripped by the chucking claws 28 and then raised. And take it out of the mold.

Thereafter, the slide blocks 10, 10 '
Is moved in the opposite direction with respect to the mold by the rotation of the annular chain belt 15, so that the two chucking blocks 14, 14 'move away from each other. The molded article and the waste material gripped by are transported to different positions. Then, the molded product and the waste material are separately charged into the molded product storage box 19 and the waste material storage box 20 which are separately installed on both sides of the injection molding machine 18.

After the molded product and the waste material are charged, if the annular chain belt 15 is rotated in the opposite direction to the above, the two chucking blocks 14, 14 'move in a direction approaching each other, and the original chucking blocks 14, 14' move toward each other. Return to the position and enter the standby state. Then, when the next injection molding is completed and the mold is separated, the above process is started again. Hereinafter, by repeating this process, the molded article and the waste material are transferred to different positions.

As described above, in the transfer device of the present embodiment,
During the transfer operation, two chucking blocks 14, 14 '
Since these members and the related members are moved in opposite directions by the moving mechanism, the load is well balanced, and an uneven load is not applied to the device. Therefore, the rails 7 and 8 are not deformed or worn, and the mold and the injection molding machine are not adversely affected. In addition, since large uneven loads are not applied to specific parts of the device,
The supporting members such as the rails 7 and 8 can also be made slim and light, and the influence of inertia is reduced, so that the positional accuracy is improved.

Since the molded article storage box 19 and the waste material storage box 20 can be separately installed on both sides of the injection molding machine 18 to store the molded article and the waste material,
Near 0, a crusher and a mixer for reusing waste materials can be installed. Therefore, the pulverization and mixing operations of the taken out waste material can be efficiently performed in parallel with the injection molding process.

The two slide blocks 10, 10 '
A control circuit for operating the clutch mechanism to control the timing of engagement and disengagement is provided in the operation panel 17, and is engaged with the annular chain belt 15 so as to be disengageable by the clutch mechanisms.

The clutch mechanism is operated by the control circuit,
Slide blocks 10, 10 'and annular chain belt 1
By controlling the timing of engagement with and disengagement from the slide block 5, a time difference can be provided between the operations of the slide blocks 10, 10 '. Therefore, the transfer start point and the transfer end point are shifted for each of the chucking blocks 14, 14'. Can be set.

That is, two chucking blocks 1
4, 14 'can be simultaneously moved in different directions, and by providing a time difference between the operations,
The distance from the mold to the transfer end point can be changed and set for each of the chucking blocks 14, 14 '.

Here, there are various types of the annular chain belt 15, but when the non-sound chain is used in the present embodiment, the generation of noise is small, which is good from the viewpoint of preventing noise in the factory. . It is preferable to avoid using the chain because the chain elongates with the elapse of use time, meshing with the gears becomes poor, and noise is generated. Further, instead of the annular chain belt, a mechanism for moving the slide blocks 10, 10 'by a cylinder can be employed.

Next, another embodiment will be described with reference to FIG. In the embodiment shown in this figure, the two slide blocks 50, 50 'are respectively removably locked to the upper side of the parallel portion of the annular chain belt 15, and control the timing of these disengagement. Control circuit is provided in the operation panel 17. Therefore, the rotation of the annular chain belt 15 causes the slide block 50,
50 'moves in the same direction. The structure of the other parts is the same as described above.

In this case, two chucking blocks 1
4 and 14 'move in the same direction. First, the chucking blocks 14 and 14' are both moved to the left side of the drawing, where the waste material gripped by the chucking claw of one chucking block 14 is removed. Thereafter, the chucking blocks 14, 14 'are both moved to the right side in the drawing, and the molded product gripped by the chucking claws of the other chucking block 14' is released. Thus, the molded article and the waste material can be transferred to different positions.

Further, by operating the clutch mechanism by the control circuit and controlling the timing of engagement and disengagement between the slide blocks 50, 50 'and the annular chain belt 15, a time difference is provided between the operations of the respective slide blocks 50, 50'. Therefore, the transfer start point and the transfer end point can be shifted and set for each of the chucking blocks 14 and 14 ′ interlocked with each other.

[0046]

According to the present invention, the following effects can be obtained.

[0047] (1) In the transfer device for transferring from an injection molding machine to moldings and take out the waste material becomes their respective different positions, by moving moldings and the waste material in different directions or the same direction, respectively By providing the transfer means for transferring to another position, the load applied to the apparatus is dispersed, and the load balance is improved. Further, since the molded article and the waste material can be transferred to different positions, a space for installing another device near the waste material storage position can be secured.

[0048] (2) and the member for Mounting Ru attached to the mold platen of an injection molding machine, is arranged between the mounting member, and two holding members which move in a direction intersecting the movement direction, two holding An article gripping tool provided on the member and two holding members,
The provision of the moving mechanism for moving the mold in the different direction or the same direction based on the mold allows the molded article and the waste material to be separately gripped and taken out by the article gripping tool, and transferred to different positions.

(3) The moving mechanism has an annular belt member extending along the direction of movement of the holding member, and a driving device for rotating the annular belt member in the forward and reverse directions, and one of the holding members is annular. An engaging / disengaging means for engaging one of the parallel portions of the belt body with the other holding member with the other of the parallel portions and further engaging and disengaging at least one of the holding members and the annular belt body is provided. With the structure, the two holding members are
The molds can be moved in opposite directions with respect to the molds, and the molded articles and the like can be transferred to different positions. In addition, the transfer start point and the transfer end point of each holding member can be shifted by controlling the timing of the engagement and disengagement of the holding member and the annular belt body by the engaging and disengaging means.

[0050] (4) moving mechanism, an annular belt body spanned along the moving direction of the holding member, and a driving device for rotating the endless belt member in forward and reverse directions, the two holding members engaged to one of parallel portions of the endless belt member, by a structure in which a disengagement means for disengaging the at least one holding member and the annular belt body, the two holding members, based on the mold In addition, the molded article and the like can be transferred to different positions while being moved in the same direction. Further, by controlling the timing of engagement and disengagement of at least one holding member and the annular belt body by the engagement and disengagement means, the transfer start point of each holding member,
The transfer end point can be shifted.

(5) As a mechanism for moving the holding member, an annular belt body and a driving device are provided, and the two holding members are respectively engaged with predetermined portions of the parallel portions of the annular belt body, so that the driving mechanism is driven. The two holding members can be moved simply by rotating one annular belt body forward and reverse by the machine.

(6) As the engagement / disengagement means, a clutch mechanism for locking and releasing the holding member and the annular belt body and a control circuit for operating the same are employed to lock the holding member and the annular belt body. Since the release can be quickly and reliably performed, the transfer speed can be increased and the transfer position can be adjusted with high accuracy.

(7) During the transfer operation, the two holding members are moved by the moving mechanism in both directions based on the mold.
The load applied to the device is well balanced, and no uneven load is applied to a specific portion of the device. For this reason, the durability of the device is improved, the weight of the support member can be reduced by slimming down the support member, and the transfer position accuracy can be improved by reducing the influence of inertia.

(8) Since the molded article and the waste material can be put into the molded article storage box and the waste material storage box separately installed on both sides of the injection molding machine, a waste material crusher, It becomes possible to install a mixer, so that the crushing and mixing of the waste material can be performed efficiently in parallel with the injection molding process.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a transfer device according to an embodiment.

FIG. 2 is a plan view showing the transfer device.

FIG. 3 is an operation explanatory view of an annular chain belt of the transfer device.

FIG. 4 is a front view of the transfer device.

FIG. 5 is an operation explanatory view of an annular chain belt of a transfer device according to another embodiment.

FIG. 6 is a perspective view showing a conventional transfer robot.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Fixed side mold board 2 Movable mold board 3,5 Mounting member 4,6 Mounting hole 7,8 Rail 9 Movement direction 10,10 ', 11,11', 50,50 'Slide block 12,12' Slide shaft 13, 13 'stopper 14 14' chucking block 15 annular chain belt 16 motor 17 operation panel 18 injection molding machine 19 molded product storage box 20 waste material storage box 21, 21 'gear 22, 23 rotatable shaft 24, 25 fixed frame 26 Air cylinder 27 Cylinder shaft 28 Chucking claw 29 Molded product or waste material 31 Fixed slide rail 32 Movable slide rail 33 Traverser 34 Slider 35 Chuck slider 36 Chuck shaft 37 Chucking claw 38, 39 Mounting plate 41 Gear 42 Tooth With belt

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B25J 9 / 02,17 / 00

Claims (3)

(57) [Claims] An injection molding machine is mounted on a mold plate of an injection molding machine.
Their respective take out the molded product, and waste material from the mold of form machine
A transfer feeder you transferred to different positions, the injection molding
The machine attached to each of the fixed and movable
Attachment member, disposed between the attachment members and
2 moves in the direction intersecting with the moving direction of the movable mold
Up and down on each of the two holding members and the two holding members
The article gripping tool provided in the function, based on the mold
The two holding members are moved in different directions.
A moving mechanism, wherein the moving mechanism moves along the moving direction of the two holding members.
Forward and reverse the annular belt body
And a drive mechanism for rotating the two holding units.
The one holding member of the material is aligned with one side of the annular belt body.
Lock the other holding member to the row part and the parallel part on the other side
And at least one holding member and the ring
A transfer device provided with an engagement / disengagement means for engaging / disengaging a belt-like body . 2. A attached to the mold platen of an injection molding machine, their respective take out the molded article and waste material from the mold of the injection molding machine
A transfer device for transferring to a different position, the injection molding
The machine attached to each of the fixed and movable
Attachment member, disposed between the attachment members and
2 moves in the direction intersecting with the moving direction of the movable mold
Up and down on each of the two holding members and the two holding members
The article gripping tool provided in the function, based on the mold
A moving mechanism for moving the two holding members in the same direction;
And the moving mechanism is arranged along a moving direction of the two holding members.
Forward and reverse the annular belt body
And a drive mechanism for rotating the two holding units.
Material is locked to a parallel portion on one side of the annular belt body,
Furthermore, at least one holding member and the annular belt body
A transfer device provided with engaging / disengaging means for engaging / disengaging . 3. The device according to claim 2, wherein the engaging and disengaging means includes the holding member and the ring.
A clutch mechanism for locking and releasing the belt-like body and
A control circuit for operating the serial clutch mechanism according to claim 1 or
3. The transfer device according to claim 2.