JP3740624B2 - Safety enclosure for swivel injection molding machine with 3 mold clamping devices - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a safety enclosure for a swivel injection molding machine in which one injection device is swiveled with respect to three mold clamping devices to enable injection of material resin for each mold clamping device.
[0002]
[Problems to be solved by the invention]
In a swivel type injection molding machine in which three mold clamping devices are arranged radially along with the bed along the circumference of the turntable equipped with the injection device, in order to increase the space efficiency as much as possible, a ridge is placed on the side facing the injection device. It is common to install them in contact. For this reason, the working space between the mold clamping devices is narrowed as it approaches the bed of the injection device, and the front fixing plate of each mold clamping device is located on the side of the bed of the injection device leaving a slight gap. .
[0003]
In such a configuration, the molding operation of the mold clamping device in the central portion is left as it is, and the adjacent mold clamping device is stopped, and the resin adhered and solidified in the vicinity of the locating ring of the mold clamping device, etc. (Referred to as “operation”) is extremely dangerous. If safety is taken into consideration, it is preferable to stop the molding operation at the center.
[0004]
However, the viewpoint of continuously molding with respect to the three mold clamping devices by one injection device to save the molding waste time required for opening / closing the mold and releasing the molded product in each mold clamping device. In addition, it is difficult to stop the mold clamping device during molding operation and perform various operations from the viewpoint of molding efficiency, and the work can be performed safely only by stopping the mold clamping device that is the work target. It is highly desirable to be able to do it.
[0005]
The present invention has been conceived from the above circumstances. The purpose of the present invention is to provide a door plate provided in a safety enclosure as a partition between a central portion and a mold clamping device adjacent to the central plate during various operations. To provide a safety enclosure for a swivel type injection molding machine capable of ensuring a sufficient working space on the injection side bed in front of the apparatus and preventing an operator from entering the mold clamping device at the center. is there.
[0006]
[Means for Solving the Problems]
The present invention according to the above object is characterized in that an injection device is mounted on a turntable provided on the upper surface of the bed, and three mold clamping devices are arranged radially with the bed on the side of the bed along the circumference of the turntable. In the swivel injection molding machine in which the injection device is configured to correspond to each mold clamping device by swivel movement and the periphery of the bed on the injection side is safely surrounded by a panel, the first and third mold clamping devices 4 at both ends of the array are arranged. , 6 and the enclosure parts 20 and 21 located on the outside adjacent to the enclosure parts 20 and 21 are both formed with work doors mounted in a quadrilateral frame member, Door plates 26 and 27 having a nozzle insertion hole 24 and a tie bar nut insertion hole 25 of the mold clamping device are formed in the frame members of the enclosure parts 20 and 21 on the first and third mold clamping devices 4 and 6 side. , Of the adjacent portions 22 and 23 One or both of the door plates 26 and 27 which are attached as a pair of push-openable work doors together with the door plates 28 and 29 attached to the member and face the first and third mold clamping devices 4 and 6 are The two plate bodies are formed so as to be folded in two, and the one-sided door 30 is attached in the plane of the door plate 28 in the outer adjacent portion of the first mold clamping device 4. .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
In the figure, reference numeral 1 denotes an injection device, which is mounted at the center of a turntable 3 provided on the upper surface of a box-shaped bed 2. On the three sides of the bed 2, first to third mold clamping devices 4, 5, 6, which are located radially along the circumference of the turntable 3, have respective frame-structured beds 7, 8, 9 is integrally connected to the side surface of the bed 2 so as to contact the heel.
[0008]
On the upper surface of the turntable 3, a plate 10 in which a pair of guide rails 11, 11 are laid in parallel is installed so that the height can be adjusted. On the installation plate 10, moving plates 12 are provided on both sides of the lower surface. Sliders 12a attached to the front and rear are movably mounted on the guide rails 11 and 11, respectively.
[0009]
The injection device 1 is mounted and fixed on the moving plate 12 via a seat below the injection cylinder, and the piston rod 13 of the hydraulic cylinder formed in the seat is attached to the outer edge of the installation plate 10. It is connected to the pressure receiving member 14 projecting from the cylinder, and the hydraulic cylinder is operated so that the pressure receiving member 14 moves forward and backward with respect to the mold clamping devices 4, 5 and 6 together with the moving plate 12 with the reaction force side. is there.
[0010]
Of the above mold clamping devices, the first and third mold clamping devices 4 and 6 are secured on the beds 7 and 9, respectively, in the same manner as a normal mold clamping device because a working space is secured outside. However, with respect to the second mold clamping device 5 at the center, since the mold clamping devices 4 and 6 on both sides are positioned obliquely with respect to the mold clamping device 5, the work space on both sides of the mold clamping device 5 is wedge-shaped. Since the work space for the mold exchanging work and the above-mentioned work cannot be secured as it is narrowed as it is, the mold clamping device is attached to the longitudinal linear guides 15, 15 laid on the upper surface of the bed 8 so that the whole can move backward. Is engaged with a slider on the lower surface so as to be movable on the bed, and is screwed between a feed screw shaft 17 on the upper surface of the bed that is rotated by an electric motor 16 and a nut member (not shown) on the stationary platen. It is possible to move backward.
[0011]
The injection-side bed 2 and the mold-clamping-side beds 7, 8, 9 are joined with bolts or the like with reinforcing steel plates interposed between both end faces, and further reinforced steel plates 18 that are stretched over both sides are bolted The safety enclosure 19 which surrounds the edge of the bed 2 is put around the connection part.
[0012]
This safety enclosure 19 is made of a panel. Enclosures 20 and 21 facing the first and third mold clamping devices 4 and 6 at both ends of the array and an enclosure part (hereinafter referred to as an adjoining part) located on the outer adjacent part thereof. Both parts 22 and 23 are formed with working doors mounted in a quadrilateral frame member.
Door plates 26 and 27 in which a nozzle insertion hole 24 and a tie bar nut insertion hole 25 of the mold clamping device are bored in the frame members of the enclosure portions 20 and 21 on the first and third mold clamping devices 4 and 6 side. Are attached as a pair of push-openable work doors together with door plates 28 and 29 attached in the frame members of adjacent portions 22 and 23.
[0013]
The door plate 26 facing the first mold clamping device 4 is formed by two plate bodies 26a and 26b that are connected to each other by hinges so as to be folded in two, and within the surface of the door plate 28 of the adjacent portion 22 on the outside. A single door 30 is attached to the door. The single door 30 is locked to the door plate 28 by an electric lock 31 and is omitted in the drawing, but an electric lock is also provided in the two-folded portions of the plate bodies 26a and 26b to form the mold clamping device 4. It is locked so that it cannot be bent during operation. A similar electric lock is provided on the door plate 27 on the mold clamping device 6 side.
[0014]
The opening edges of the door plates 26 and 27 on the mold clamping device side and the door plates 28 and 29 on the adjacent portion side are connected by a chain 32 so that the door is not opened more than necessary, and a stopper 33 is provided. It protrudes from the upper surface of the bed 2.
[0015]
Reference numeral 34 denotes an enclosure panel provided at a position facing the mold clamping device 5 at the center, and has a nozzle insertion hole 35 and a tie bar nut insertion hole 36 of the mold clamping device.
In this embodiment, the door plate 26 on the first mold clamping device 4 side is formed to be foldable in two with the two plate bodies 26a and 26b, but this is on the second mold clamping device 6 side. In some cases, both door plates 26 and 27 facing the mold clamping devices 4 and 6 may be formed to be foldable in two.
[0016]
In such a configuration, when the doors are unlocked by the electric lock, the door plate 26 of the first mold clamping device 4 is folded in two and opened together with the door plate 28 of the adjacent portion 22. Thus, it can be pushed open to the inside of the enclosure until it comes into contact with the stopper 33. Further, the door plate 27 of the third mold clamping device 6 can be pushed open to the inside of the enclosure as it is together with the door plate 29 of the adjacent portion 23 until it comes into contact with the stopper 33.
[0017]
The door plate 26 pushed open to the inside of the enclosure forms a working space for the mold clamping device 4 on the upper surface of the bed 2 on the injection side together with the door plate 28 by bending of the two plates 26a and 26b. The door plate 27 also forms a work space for the mold clamping device 6 on the upper surface of the bed 2 together with the door plate 29. These work spaces are partitioned from the second mold clamping device 5 side by the plate body 26a and the door plate 27 to prevent the mold clamping devices 4 and 6 from entering the mold clamping device 5 side. For this reason, even when the mold clamping device 5 is in a molding operation, it is possible to safely perform a scraping operation of the resin adhered and solidified near the locating rings of the mold clamping devices 4 and 6 and the like.
[0018]
Therefore, various operations on the mold clamping devices at both ends of the array can be stopped only by stopping the corresponding mold clamping device, and the other two mold clamping devices can continue the molding operation as they are, so that the molding efficiency is remarkably lowered. There is nothing wrong. Further, operations such as maintenance and material purging on the injection apparatus 1 side can be performed by pushing and opening the one-side door 30 provided in the door plate surface of the adjacent portion 22 of the first mold clamping apparatus 4 inward.
[0019]
As a result, even in a swivel injection molding machine in which the front portion of each mold clamping device is radially arranged on the bed side portion of the injection device leaving a slight gap, various operations other than the molding operation can be performed. It is possible to perform the operation safely only by stopping the operation, and since other mold clamping devices are in operation even during the operation, the molding efficiency is not significantly reduced.
[Brief description of the drawings]
FIG. 1 is a schematic plan view in a door opening state of a swivel type injection molding machine provided with three mold clamping devices having a safety enclosure according to the present invention.
FIG. 2 is a perspective view of the injection device side showing the inside of a safety enclosure in a closed state.
FIG. 3 is a perspective view of the injection device side showing the inside of a safety enclosure in an open state.
FIG. 4 is a perspective view of the injection device side showing a part of the outside of the safety enclosure.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Injection apparatus 2 Bed on injection apparatus side 3 Turntable 4 First mold clamping apparatus 5 Second mold clamping apparatus 6 Third mold clamping apparatuses 7, 8, 9 Bed 20, 21 on mold clamping apparatus side Clamping apparatus Enclosed portions 22 and 23 facing each other Enclosed portion 24 adjacent nozzle portion 24 Nozzle insertion hole 25 Tie bar nut insertion hole 26 and 27 Door plate 28 and 29 on the mold clamping device side door plate 30 Adjacent portion door plate

Claims (1)

The injection device is mounted on a turntable provided on the upper surface of the bed, and three mold clamping devices are arranged radially with the bed on the side of the bed along the circumference of the turntable. In a swivel injection molding machine that is configured to support each mold clamping device and safely surrounds the periphery of the bed on the injection side with a panel,
Both of the surrounding portions 20 and 21 facing the first and third mold clamping devices 4 and 6 at both ends of the array and the surrounding portions 22 and 23 positioned adjacent to the outside of the surrounding portions 20 and 21 are quadrilateral. Formed with a work door attached in the frame member of
Door plates 26 and 27 having a nozzle insertion hole 24 and a tie bar nut insertion hole 25 of the mold clamping device are formed in the frame members of the enclosure parts 20 and 21 on the first and third mold clamping devices 4 and 6 side. The door plates 28 and 29 attached to the frame members of the adjacent enclosure portions 22 and 23 are attached as a pair of push-open work doors and face the first and third mold clamping devices 4 and 6. One or both of the door plates 26 and 27 are formed by connecting two plates so that they can be folded in two, and are formed in the plane of the door plate 28 on the outside adjacent portion of the first mold clamping device 4. A safety enclosure of a swivel type injection molding machine provided with three mold clamping devices, wherein an opening door 30 is attached.

Images