JP3027341U - Automatic purging material unloading device - Google Patents

Abstract

(57) Abstract: Conventionally, the purge material discharged from the injection device has to be carried out manually. Although there is an automatic unloading device that solves this problem, it is not only expensive due to its large size and complicated structure, but there is a risk that the purge material may leak or scatter when it is stored. SOLUTION: A purge receiver and a purge tray are integrally formed into a box shape, and the inside thereof is processed with Teflon (registered trademark).
The purge receiver is supported and guided by a slide rail and moved to the outside of the fixed plate by an air cylinder. The purge tray hinged to the lower part of the purge tray is rotated downward by a roller that supports and guides the bottom surface of the purge tray as it moves to the outside of the fixed plate, and the resin accumulated inside the purge tray is shot. To fall.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a resin change and a color change of an injection molding machine, and particularly to an auxiliary device for automatically discharging discharged purge material.

[0002]

[Prior art]

 In recent years, in the injection molding machine industry, high-mix, low-volume production has become established, and the necessity of resin replacement and color replacement is inevitably increasing. The resin in the injection device can be purged manually or automatically by the purge sequence stored in the control device of the injection molding machine, but the purged purge material is deposited on the mount of the injection molding machine. Therefore, the worker had to manually carry out the process. Japanese Utility Model Application Laid-Open No. 63-72015 is disclosed as a technique for solving the above problems.

[0003]

[Problems to be solved by the device]

 However, in Japanese Utility Model Laid-Open No. 63-72015, the purge plate and the purge plate corresponding to the purge plate and the purge plate of the present invention are separate members, and two actuators are required to drive them. . Moreover, since the purge plate and the purge material receiver are separate, there is a space between them, and it is assumed that the resin injected and discharged toward the purge plate is not accommodated in the purge receiver. Further, the purge material receiver is provided with a cooling means, which has a complicated structure and is expensive, and the hose for cooling water hinders the molding operation.

[0004]

[Means for Solving the Problems]

 Therefore, there are a purge receiver which is located approximately on the central axis of the injection device and whose inner surface is Teflon processed, a purge tray which is hinged to the lower surface of the purge receiver by a hinge so that the inner surface is Teflon processed, and the above-mentioned page receiver. A slide rail that can move substantially horizontally, an actuator that moves the purge receiver onto the slide rail, and a bottom portion of the purge tray that supports the purge receiver as the actuator moves the purge receiver to the outside of the stationary platen. On the other hand, an automatic purging device for purging material of an injection molding machine is proposed, which is composed of a plurality of rollers which guide downwardly the surface opposite to the hinge hinged surface of the purge tray.

[0005]

[Embodiment of device]

 Next, an embodiment of the present invention will be described in detail with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 is a fixed plate, which constitutes a part of the mold clamping device. Reference numeral 2 denotes a pedestal on which the mold clamping device, the injection device 12 and the like are integrally mounted. Reference numeral 13 is a purge material carry-out device provided between the stationary platen 1 and the injection device 12. 3 is a box-shaped purge receiver with an open bottom, and the inside of the box is Teflon-coated to prevent molten resin from adhering to it. Further, the purge receiver 3 is installed so that the center axis of the injection device 12 is substantially at the center of the bottom of the purge receiver. A hinge 5 is fixed to one of the edges of the purge receiver 3 adjacent to the box-shaped open portion to hinge the purge tray 4. The purge tray 4 is in the shape of a box with the opposite edges of the hinges 5 hinged open, and the open side is rotatable on the surface of the fixed platen 1. The box-shaped inside of the purge tray 4 is also treated with Teflon so that molten resin does not adhere to it. Two slide rails 7 are fixed to the rear surface of the bottom of the purge receiver 3, and an end of a rod 9 of an air cylinder 8 which is an actuator of the purge receiver 3 is fixed to the upper edge. The air cylinder 8 and the slide rail 7 are fixed to a mounting plate 10, and the mounting plate 10 is fixed to the pedestal 2 so as to be substantially flush with the surface of the fixed plate 1 on the injection device side. It is preferable that the slide rail 7 is formed by bending a plate material and provided with a ball bearing, but it may be formed by sliding two members by a guide groove.

Reference numeral 6 denotes a roller for supporting and guiding the purge tray 4, which is rotatably attached to the surface of the fixed plate on the injection device side and the attachment plate 10. FIG. 1 shows a state during a purging operation for injecting resin from an injection device. When the purging is completed, the air cylinder 8 is operated so that the rod 9 is pulled in, and the purge receiver 3 and the page tray 4 are supported and guided by the slide rails 7 and pulled out to the outside of the fixed plate 1. This state is shown in FIG. As shown in FIG. 2, as the purge tray 4 moves to the outside of the fixed platen 1, the rollers 6 for guiding the purge tray 4 are arranged so as to gradually move downward. Therefore, as the purge plate 4 moves to the outside of the fixed plate 1, the purge plate 4 rotates downward about the hinge 5 due to its own weight and the weight of the resin accumulated inside thereof. Near the stroke limit position of the air cylinder 8, that is, the position where the outward movement of the purge receiver 3 is stopped, the resin inside the purge tray 4 drops from the box-shaped opening (right side in the figure) and passes through the shooter 11 and the pedestal 2 moves. It is housed in a box or the like provided outside.

It is preferable that the air cylinder 8 is automatically controlled to move back and forth by a control device of an injection molding machine (not shown). That is, the control device outputs an electric signal for driving the air cylinder 8 forward and backward in synchronization with the page sequence of the injection device stored and stored therein.

[0008]

[Effect of device]

 Since the automatic purge material unloading device of the present invention has the purge receiver and the purge tray integrally configured, only one actuator is required to drive them, and the purge receiver and the purge tray are treated with Teflon. Since the cooling device is not needed, the device can be made inexpensive and small. Moreover, since the purge tray and the purge tray are integrally formed in a box shape, the leakage and scattering of the purge material can be reduced, and the purge operation can be performed safely and easily.

[Brief description of drawings]

1A and 1B are views showing a state in which a device of the present invention is mounted on an injection molding machine and a purging operation is performed, (A) is a front view from the injection device side, and (B) is a view in (A). C-C
It is a sectional arrow view.

FIG. 2 is a front view from the injection device side showing a state when the purge material is carried out in the device of the present invention mounted on the injection molding machine.

[Explanation of symbols]

 1 Fixed plate 2 Frame 3 Purge receiver 4 Purge tray 5 Hinge 6 Roller 7 Slide rail 8 Air cylinder 9 Rod 10 Mounting plate 11 Shooter 12 Injection device 13 Purge material unloading device

Claims (1)

[Scope of utility model registration request] 1. A purge material carrying-out device provided between a fixed plate of an injection molding machine and an injection device, the purge receiver having a Teflon inner surface located on a substantially central axis of the injection device, and a lower surface of the purge receiver. A purge tray whose hinge is rotatably hinged and whose inner surface is made of Teflon; a slide rail that allows the page receiver to move substantially horizontally; and an actuator that moves the purge receiver onto the slide rail. An injection consisting of a plurality of rollers for supporting the bottom of the purge tray as the actuator moves the purge receiver to the outside of the fixed plate and for guiding the surface of the purge tray opposite to the hinge hinged surface downward. Automatic unloading device for purge material of molding machine.