JP2006218653A - Injection molding machine - Google Patents

Abstract

An injection molding machine capable of collecting waste grease without stopping automatic operation is provided.
A bed 3 of an injection molding machine according to the present invention has a grease reservoir plate 20 for removably storing an oil mat 23 collecting and collecting grease falling from a ball screw mechanism 12 and a toggle mechanism 7 at a lower portion of the mold clamping device 1. The grease storage plate 21 that detachably accommodates the oil mat 23 that collects and collects the grease falling from the ball screw mechanism 19, the intermediate plate 16, the ball screw mechanism 30, and the linear guide 27 is disposed in the injection device 2 and the moving device 26. Located at the bottom.
[Selection] Figure 1

Description

  The present invention relates to an injection molding machine that performs a mold opening / closing operation and an injection operation by converting rotation of an electric servo motor into a linear motion via a ball screw mechanism supplied with grease.

In general, an electric injection molding machine converts the rotation of an electric servo motor into a linear motion via a ball screw mechanism and transmits it to the cross head, and moves the movable plate forward and backward via a toggle mechanism by the forward and backward movement of the cross head. A mold clamping device that performs mold opening and closing operations, and the rotation of the electric servo motor is converted into linear motion via a ball screw mechanism and transmitted to the intermediate plate, and the injection is performed by moving the screw back and forth by moving the intermediate plate back and forth. And a moving device that converts the rotation of the electric motor into a linear motion via a ball screw mechanism, transmits the linear motion to the injection device, and moves the injection device back and forth. Since each ball screw mechanism in these three devices operates at a high load, it is necessary to grease the grease at regular intervals. Also, grease lubrication is performed at regular intervals on the link pin sliding portion of the toggle mechanism, the sliding portion of the intermediate plate, and the linear guide portion of the moving device as in the ball screw mechanism. When grease is supplied at regular intervals in this way, waste grease is discharged from the ball screw mechanism, toggle mechanism, intermediate plate sliding portion, and linear guide portion. Therefore, in the conventional configuration, the waste grease is slidably disposed in the mold clamping device bed on the mold clamping device side, and the grease tray member is slidably disposed in the injection device on the mold clamping device side. It can be collected. On the other hand, the waste grease from the linear guide portion of the moving device has a structure that accumulates on the frame plate of the bed (see, for example, Patent Documents 1 and 2).
JP 2002-113755 A JP 2002-113744 A

  However, in the conventional structure described above, on the side of the mold clamping device, when the tray member is slid, the lower part of the mold clamping device becomes a space, and if the machine is operated in this state, grease may fall on the floor surface. On the injection device side, a control panel is usually arranged in the bed below the injection device, and the tray member cannot be slid with the same structure as the mold clamping side. Therefore, although the tray member is slidably disposed in the injection device, the grease of the moving device cannot collect the waste grease without stopping the operation.

  Therefore, an object of the present invention is to provide an injection molding machine capable of collecting waste grease of a mold clamping device, an injection device, and a moving device without stopping automatic operation.

  In order to achieve the above object, an injection molding machine of the present invention includes a mold clamping device that performs a mold opening / closing operation by moving a movable plate forward and backward through a toggle mechanism by a cross head moving forward and backward by a ball screw mechanism, and an intermediate plate by a ball screw mechanism. In an injection molding machine having on a bed an injection device for performing an injection operation by moving the screw back and forth by moving forward and backward, and a moving device including a ball screw mechanism and a linear guide for moving the injection device forward and backward, the bed includes at least a ball screw. A grease reservoir plate that detachably accommodates the oil mat that collects the waste grease that falls from the mechanism and toggle mechanism is placed below the mold clamping device, and dropped from at least the ball screw mechanism, intermediate plate, ball screw mechanism, and linear guide Removably store the oil mat that collects the waste grease Characterized in that it placed the squirrel reservoir plate below the injection device and the mobile device.

  In the injection molding machine of the present invention configured as described above, the waste grease dropped from each part of the mold clamping device, the injection device, and the moving device to be lubricated is collected and collected on an oil mat placed on the bed. Moreover, since the oil mat can be taken out, it can be easily recovered. Further, even when the oil mat is taken out to the outside, there is a grease reservoir plate in the bed, so that it is possible to prevent the grease from falling to the floor or inside the control panel.

  In the injection molding machine according to the present invention, the grease reservoir plate may detachably store a jig having a plurality of pins on the main surface for holding the oil mat.

  As described above, according to the present invention, not only the waste grease from the mold clamping device and the injection device but also the waste grease dropped from the moving device is collected on the oil mat, and the oil mat is taken out to the outside. Since the waste grease is collected by the grease reservoir plate even in the state, the waste grease of the mold clamping device, the injection device and the moving device can be collected without stopping the automatic operation of the injection molding machine.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic side view showing the configuration of an example of the injection molding apparatus of the present invention, FIG. 2 is a side view of the mold clamping device viewed in the direction B in FIG. 1, and FIG. 3 is an arrow in FIG. It is a side view of the injection device seen in the view C direction. FIG. 4 is a top view of an example of an oil mat member mounted on a jig, and FIG. 5 is a side view for explaining details of attaching the oil mat member to the jig.

  An injection molding apparatus 100 of the present invention includes a mold clamping apparatus 1 for clamping a mold (not shown), an injection apparatus 2 for injecting a molten material into the mold, and the injection apparatus 2 approaching the mold clamping apparatus 1. , The moving device 26 to be separated from each other, the grease reservoir plates 20 and 21 for receiving the waste grease dripping from the injection device 2, the injection device 2 and the moving device 26, the operation of the mold clamping device 1, the injection device 2 and the moving device 26. And a control panel 22 for controlling forward and backward movement and the like.

  The mold clamping device 1 is installed on a bed 3, a fixed platen 4 and a housing 5 are connected by a tie bar 6, and a movable platen 8 is arranged in the housing 5 with a tie bar 6 as a guide via a toggle mechanism 7. . As the movable platen 8 moves forward and backward, the cross head 9 in the toggle mechanism 7 is rotated, and as shown in FIG. 2, the electric servo motor 10 attached to the housing 5 is rotated, the timing belt 11a, the pulley 11 and the ball screw mechanism 12 are rotated. This is done by converting to linear motion.

  In addition, the injection device 2 is installed on the bed 3, the front plate 13 and the rear plate 14 are connected by a shaft 15, and an intermediate plate 16 is arranged with the shaft 15 as a guide. As shown in FIG. 3, the intermediate plate 16 is moved forward and backward by converting the rotation of the electric servo motor 17 attached to the rear plate 14 into a linear motion via a timing belt 18a, a pulley 18 and a ball screw mechanism 19. Is called.

  The moving device 26 is disposed on the bed 3 below the injection device 2, and the linear guide 27 of the injection device 2 is arranged using a rail 28 provided on the bed 3 as a guide. The injection device 2 is moved forward and backward by converting the rotation of the electric motor 29 attached to the bed 3 into a linear motion via the ball screw mechanism 30.

  The bed 3 is composed of a member that can stably hold the mold clamping device 1, the injection device 2, and the moving device 26, and has mechanical strength by a framework of the members, and is placed below the mold clamping device 1, the injection device 2, and the moving device 26. The grease reservoir plates 20 and 21 are fixed. In addition, a control panel 22 is usually disposed below the grease reservoir plate 21 on the injection device 2 and moving device 26 side.

  As shown in FIG. 4, the oil mat 23 is attached to a jig 24 so as to be easily placed in the bed 3 from the outside. Further, as shown in FIG. 5, the oil mat 23 has a structure in which it is pierced and fixed to a pin 25 provided on the jig 24.

  The planar shape of the jig 24 is U-shaped, and a plurality of pins 25 are arranged on the main surface 24a. The oil mat 23 is attached to the jig 24 by being inserted into the pins 25. The oil mat 23 attached to the jig 24 is set on the grease reservoir plates 20 and 21 by being inserted in the direction of the side surfaces of the grease reservoir plates 20 and 21 (in the direction of arrow A shown in FIG. 1). Is made.

The dimension of the oil mat 23 set on the grease reservoir plate 20 is such that the length L ₁ is the driving area of the ball screw mechanism 12 and the toggle mechanism 7, that is, the ball screw mechanism 12 of the mold clamping device 1 and the link pin sliding portion of the toggle mechanism. It has a length that can cover the area where the waste grease hangs down from the equally lubricated part. Similarly, the width L ₂ has a width that can cover a region where the waste grease hangs down from the ball screw mechanism 12 and the toggle mechanism 7.

Also, the dimension of the oil mat 23 set on the grease reservoir plate 21 is such that the length L ₁ is the drive area of each of the ball screw mechanisms 19 and 30, the sliding area of the intermediate plate 16, and the linear guide portion, that is, the injection device 2. The ball screw mechanism 19 and the sliding portion of the intermediate plate 16 and the ball screw mechanism of the moving device 26 and the linear guide 27 have a length that can cover the region where the waste grease hangs down from the lubricated portion. Similarly, the width L ₂ has a width that can cover an area where the waste grease hangs down from both the ball screw mechanisms 19 and 30.

  Note that the size of the jig 24 is slightly larger than the size of the oil mat 23. Further, the planar shape of the jig 24 is not limited to the U-shape, and may be a frame shape or a simple flat plate.

  The material of the oil mat 23 may be any material as long as the waste grease can be retained, and a hole having a predetermined size may be formed in advance at a place where the pin 25 is pierced. .

  By adopting the above configuration, most of the waste grease dropped from the mold clamping device 1, the injection device 2 and the moving device 26 is collected on the oil mat 23 arranged in the bed, and a jig is provided from the outside. Since it can be taken out together with 24, it can be easily collected. Further, when the oil mat 23 is damaged, it can be easily removed from the jig 24, so that it can be recovered over a long period of time by replacing it with a new one. Further, even when the oil mat 23 is taken out, the grease reservoir plates 20 and 21 are present in the bed 3 so that the grease can be prevented from dropping into the floor or the control panel 22.

  That is, the injection molding machine according to the present embodiment collects not only the waste grease from the mold clamping device 1 and the injection device 2 but also the waste grease dropped from the moving device 26 on the oil mat 23, and also the oil mat 23. The waste grease is collected and collected by the grease reservoir plates 20 and 21 even in a state in which it is taken out to the outside. For this reason, it becomes possible to collect | recover the waste grease of a mold clamping apparatus, an injection apparatus, and a moving apparatus, without stopping the automatic driving | operation of an injection molding machine.

  The waste grease collected by the oil mat 23 disposed on the grease reservoir plate 20 receives the waste grease that falls from the greased portions other than the ball screw mechanism 12 and the toggle mechanism 7 of the mold clamping device 1. Also good. Similarly, the waste grease collected by the oil mat 23 disposed on the grease reservoir plate 21 is collected from the greasing portion other than the ball screw mechanism 19 and the intermediate plate 16 of the injection device 2, the ball screw mechanism of the moving device 26 and the linear guide 27. You may catch the waste grease which falls.

It is a typical side view which shows the structure of an example of the injection molding apparatus of this invention. FIG. 2 is a side view of the mold clamping device viewed in the direction of arrow B in FIG. 1. It is the side view of the injection device seen in the arrow C direction in FIG. It is a top view of an example of the oil mat member with which the jig was equipped. It is a side view for demonstrating the attachment detail of the oil mat member to a jig.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mold clamping apparatus 2 Injection apparatus 3 Bed 4 Fixed board 5 Housing 6 Tie bar 7 Toggle mechanism 8 Movable board 9 Crosshead 10 Electric servo motor (clamping)
11 Timing belt, pulley (clamping)
12 Ball screw mechanism (clamping)
13 Front plate 14 Rear plate 15 Axis 16 Intermediate plate 17 Electric servo motor (injection)
18 Timing belt, pulley (injection)
19 Ball screw mechanism (injection)
20 Grease reservoir (clamping)
21 Grease reservoir (injection)
22 Control Panel 23 Oil Mat 24 Jig 25 Pin 26 Moving Device 27 Linear Guide 28 Rail 29 Electric Motor 30 Ball Screw Mechanism (Movement)

Claims (2)

A mold clamping device (1) for performing a mold opening / closing operation by moving the movable plate (8) forward and backward through a toggle mechanism (7) by the forward and backward movement of the cross head (9) by the ball screw mechanism (12), and the ball screw mechanism (19) The intermediate plate (16) is moved forward and backward to move the screw forward and backward to perform an injection operation (2), and the injection device (2) is moved forward and backward, and a ball screw mechanism (30) and a linear guide (27) In an injection molding machine having on the bed (3) a moving device (26) comprising:
The bed (3) includes at least a grease retaining plate (20) for detachably storing an oil mat (23) that collects waste grease falling from the ball screw mechanism (12) and the toggle mechanism (7). Oil that is disposed below the device (1) and collects at least the waste grease falling from the ball screw mechanism (19), the intermediate plate (16), the ball screw mechanism (30), and the linear guide (27). An injection molding machine characterized in that a grease reservoir plate (21) for detachably storing a mat (23) is disposed below the injection device (2) and the moving device (26). The grease reservoir plate (20, 21) detachably houses a jig (24) having a plurality of pins (25) for holding the oil mat (23) on a main surface (24a). The injection molding machine described in 1.

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