JP2020006644A - Vertical injection molding machine with expansion bed - Google Patents

Abstract

To provide a vertical injection molding machine capable of placing a necessary auxiliary device on a bed, regardless of the presence or absence of the necessary auxiliary device and the number of auxiliary devices if any, and without unnecessarily increasing an installation area in a factory.SOLUTION: A vertical injection molding machine (1) in which a fixed plate (5) of a mold clamping device (2) is fixed to a top plate of a bed (4). The vertical injection molding machine (1) includes a detachable extension bed (15). The extension bed (15) is attached by tightening an attachment bolt (25) to a nut (16) provided to open laterally on a side of the bed (4). When the extension bed (15) is attached to the bed (4), its upper surface is substantially at the same height as the upper surface of the bed (4).SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vertical injection molding machine including a mold clamping device and an injection device, wherein a fixed plate of the mold clamping device is provided on a top plate of a bed.

  BACKGROUND ART A vertical injection molding machine is conventionally known, for example, as described in Patent Literature 1, and is a mold clamping device that opens and closes a pair of dies in a vertical direction, and injects a molten resin into the clamped dies. And an injection device. When the mold clamping device is a toggle type, the mold clamping device includes a fixed plate, an upper movable plate and a lower movable plate, a plurality of tie bars, and a toggle mechanism. The fixed plate is fixed to the bed top plate, and a tie bar passes through the fixed plate. The upper movable plate is provided at the upper end of the tie bar, and the lower movable plate is provided at the lower end. A toggle mechanism is provided between the lower movable board and the fixed board, and when the toggle mechanism is driven, the upper movable board and the lower movable board are driven with respect to the fixed board. That is, the mold is opened and closed. The toggle mechanism and the lower movable plate are housed in a bed, and the injection device is provided above the upper movable plate. In a vertical injection molding machine, a rotating plate may be provided on a fixed plate if necessary. The lower mold is provided on the fixed plate or the rotating plate. Then, the upper mold is attached to the upper movable platen. When the mold clamping device is driven, these molds are opened and closed up and down. Such a vertical injection molding machine is suitable for insert molding in which an insert product is inserted and injection-molded, and the injection device is arranged above the mold clamping device, so that the space for installation is necessarily small. I can do it. As described above, the vertical injection molding machine has excellent features.

JP 2017-71060 A

  By the way, although the performance of the vertical injection molding machine has been remarkably improved in recent years, the shape of the toggle mechanism has been improved, and the arrangement in the bed has been reviewed, etc. Mold injection molding machines have been provided. A small vertical injection molding machine requires a small installation space in a factory and requires a small cost. The vertical injection molding machine has bolt holes at multiple locations on the upper surface of the bed, and so-called eye bolts are attached and lifted and carried.・ Easy to carry out. However, when the size of the vertical injection molding machine is reduced, problems arise. A vertical injection molding machine needs to be provided with ancillary equipment for expanding its function as necessary, but the space for installing such equipment is limited. As ancillary equipment, there are, for example, a hydraulic device for driving a core in a mold, a mold setup device, and the like. However, the bed is limited in size and cannot be placed at a desired location. In addition, the safety door is provided at the end of the bed so as to cover the mold clamping device, which can also be considered as a kind of ancillary equipment, but when the bed is small, the safety door is provided near the fixed plate. As a result, the space inside the safety door is narrowed, and the place for installing other auxiliary equipment is further reduced. By the way, in order to solve such a problem, a method of preparing a bed having a sufficient size in advance can be considered. However, in some cases, additional equipment may not be required, and in some cases, a plurality of auxiliary equipment may be required. In order to cope with any case, a considerably large bed must be prepared. Then, the cost required for the bed increases, and the installation area, which is preferably as small as possible, becomes unnecessarily large. Furthermore, the cost of loading and unloading the vertical injection molding machine also increases.

  The present invention has been made to solve the above problems, and aims to provide a vertical injection molding machine, specifically, regardless of the presence or absence of auxiliary equipment necessary for the vertical injection molding machine, and Provided is a vertical injection molding machine capable of placing necessary auxiliary equipment on a bed without an unnecessary increase in the installation area in a factory regardless of the number of auxiliary equipment, regardless of the number of auxiliary equipment. It is intended to be.

  The present invention is directed to a vertical injection molding machine in which a fixing plate of a mold clamping device is fixed to a top plate of a bed to achieve the above object. The vertical injection molding machine of the present invention includes a detachable expansion bed. The extension bed is configured to be attached to the side of the bed by tightening a mounting bolt on a nut provided to open laterally on the side of the bed. The extension bed is configured such that, when attached to the bed, its upper surface is substantially at the same height as the upper surface of the bed.

Thus, in order to achieve the above object, the invention according to claim 1 is a vertical injection molding machine in which a fixing plate of a mold clamping device is fixed to a top plate of a bed, wherein the vertical injection molding machine is used. An extension bed for extending the bed to the side thereof is detachably attached to the bed, and the extension bed is provided with a plurality of nuts provided to open laterally at the side of the bed. The vertical injection molding machine is characterized in that it can be mounted by tightening predetermined mounting bolts.
According to a second aspect of the present invention, in the vertical injection molding machine according to the first aspect, the upper surface of the extension bed is substantially the same as the upper surface of the bed when attached to the bed. The vertical injection molding machine is characterized in that
According to a third aspect of the present invention, in the vertical injection molding machine according to the first or second aspect, the mounting bolt comprises a hanging hook bolt having a head having a predetermined shape, and the extension bed has A slit having a predetermined width is formed in alignment with the mounting position of the mounting bolt, and when the vertical injection molding machine is hoisted by the hanging hook, the hanging hook is inserted from the slit and the hanging hook is inserted. It is constituted as a vertical injection molding machine characterized in that it is adapted to engage with the head of a bolt for use.

  As described above, the present invention is directed to a vertical injection molding machine in which a fixing plate of a mold clamping device is fixed to a top plate of a bed. In the vertical injection molding machine, an extension bed for extending the bed to the side is detachably mounted, and the extension bed is provided with a plurality of beds provided to open sideways at the side of the bed. It is configured such that a predetermined mounting bolt can be tightened to the nut of No. 1 and mounted. Therefore, it is not necessary to widen the bed of the vertical injection molding machine in advance, and it is only necessary to provide an expansion bed as needed when mounting ancillary equipment. What is necessary is just to select the expansion bed of an appropriate size appropriately, and it can respond regardless of the number of auxiliary devices to be placed. Furthermore, the extension bed is not fixed on the bed top plate, but on the side of the bed, so that it does not interfere with the fixed plate provided on the bed top plate or the rotating plate Nor. According to another invention, the extended bed, when mounted on the bed, has an upper surface substantially flush with the upper surface of the bed. Then, the bed and the extended bed are continuous, and the usability is good. According to still another invention, the mounting bolt is formed of a hanging hook bolt having a head of a predetermined shape, and a slit having a predetermined width is formed on the expansion bed in alignment with the mounting position of the mounting bolt. When the vertical injection molding machine is lifted by the hanging hooks, the hanging hooks are inserted through slits and engaged with the heads of the hanging hook bolts. According to the present invention, the vertical injection molding machine can be lifted and carried in / out without removing the extension bed even when the extension bed is attached.

1 is a front view showing a vertical injection molding machine according to an embodiment of the present invention. (A) is a perspective view showing a part of the bed of the vertical injection molding machine according to the present embodiment, and (A) is the bed of the bed in which the extension bed according to the present embodiment is attached to the bed. A perspective view showing a part and an extension bed, (C) is a perspective view showing a suspension hook bolt for attaching an extension bed and capable of engaging a suspension hook, and (D) is a conventional perspective view. It is a perspective view which shows an eyebolt.

  Hereinafter, the present embodiment will be described. As shown in FIG. 1, a vertical injection molding machine 1 according to the present embodiment is configured similarly to a conventional vertical injection molding machine. That is, it comprises a mold clamping device 2 and an injection device 3 provided above the mold clamping device 2. The mold clamping device 2 is provided integrally with a bed 4 that supports the vertical injection molding machine 1, and a fixed plate 5 fixed to a top plate of the bed 4, and is disposed above the fixed plate 5. Upper movable plate 6, a lower movable plate arranged below fixed plate 5, and a plurality of movable plates 6 slidably penetrating fixed plate 5 and connecting upper movable plate 6 and lower movable plate. , And a toggle mechanism provided between the fixed platen 5 and the lower movable platen. Since the lower movable platen and the toggle mechanism are housed in the bed 4, they are not shown in FIG. A lower mold 10 is provided on the upper surface of the fixed platen 5, and an upper mold 11 is provided on the lower surface of the upper movable plate 6. When the toggle mechanism is driven, these dies 10 and 11 are opened and closed. ing. Although not shown in FIG. 1, a hollow is formed in the center of the upper movable platen 6, the injection device 3 is inserted from above, and the injection nozzle 13 of the injection device 3 is inserted into a sprue (not shown) of the upper mold 11. Abuts.

  The bed 4 of the vertical injection molding machine 1 according to the present embodiment has nuts 16 buried in its side as shown in FIG. That is, the nuts 16 are provided so that the holes of the female screws are opened to the side. In the vertical injection molding machine 1 according to the present embodiment, an expansion bed 15 described below is attached by these nuts 16. Actually, these nuts 16, 16 are used when suspending the vertical injection molding machine 1 according to the present embodiment, and the positions of the nuts provided in a general vertical injection molding machine are suspended. Is different from That is, in a general vertical injection molding machine, a plurality of nuts are embedded in the upper surface of the bed so as to open upward, and an eye bolt 18 as shown in FIG. It has become. When a predetermined suspension hook is engaged with the suspension ring of the eye bolt 18, the vertical injection molding machine can be suspended. However, in the vertical injection molding machine 1 according to the present embodiment, the mounting positions of the nuts 16 are located on the side of the bed 4 as described above. If the eyebolt 18 is attached to these nuts 16 provided on the side and the vertical injection molding machine 1 is to be suspended, a strong bending moment acts on the eyebolt 18 and the root of the eyebolt 18 is formed. The nuts 16 and 16 may be deformed or damaged. This is because the eyebolt 18 is designed to be lifted vertically. In the present embodiment, the bolts used for suspension have a special shape as described later, and the bolts and nuts 16, 16 are not damaged by the bending moment acting during suspension. . In other words, by adopting a bolt having a special shape, the hanging nuts 16 can be embedded on the side of the bed 4, which is generally unsuitable for the arrangement.

  FIG. 1 shows a state of the extension bed 15 according to the present embodiment when viewed from the side, and FIG. The extension bed 15 is formed of two rectangular plate parts having a predetermined thickness, and is fixed at a right angle to the vertical plate part 19 abutting on the side part of the bed 4 and the fixed plate part 19. And a horizontal plate portion 20. The expansion bed 15 is provided with reinforcing ribs 21, 21,... For connecting the vertical plate portion 19 and the horizontal plate portion 20 to ensure strength. In the present embodiment, the extension bed 15 has a length in the depth direction substantially equal to the length in the depth direction of the bed 4 and has a predetermined width. However, the size and the size of the extension bed 15 can be appropriately selected according to the size and number of the auxiliary devices F placed thereon.

  The extended bed 15 according to the present embodiment is also characterized in that slits 23 having a predetermined width are formed in the horizontal plate portion 20. The slits 23, 23 are formed at positions matching the positions of the nuts 16, 16 when the extension bed 15 is attached to the bed 4. The width of the gap between the slits 23 is large enough to insert a hanging hook used for hanging the vertical injection molding machine 1.

  The extension bed 15 thus formed is fastened to nuts 16, 16 by mounting bolts 25, 25 and fixed to the side of the bed 4. As shown in FIGS. 1 and 2A, when the extension bed 15 is fixed to the side of the bed 4, the top plate of the bed 4 and the upper surface of the horizontal plate 20 have the same height. . By the way, the extension bed 15 can be attached to the attachment bolts 25, 25 of any shape, but in this embodiment, the extension bolt 15 has a special shape used for suspension. Bolts are employed. This bolt is a hanging hook bolt 27 and is shown in FIG. The hanging hook bolt 27 includes a male screw 27a, a thick disk-shaped flange portion 27b provided adjacent to the male screw 27a, a small-diameter shaft portion 27c extending from the flange portion 27b, and a shaft portion. And a head 27d formed at the tip of 27c. A hexagonal hole 27e for a hexagonal nut is formed in the head 27d. When the suspension hook bolt 27 is directly attached to the nut 16 without fixing the extension bed 15, the flange portion 27 b comes into close contact with the side surface of the bed 4. Since the flange portion 27b is formed to have a large diameter, it comes into close contact with the side surface of the bed 4 in a wide area. When the vertical injection molding machine 1 is suspended by engaging a predetermined suspension hook with the shaft portion 27c of the suspension hook bolt 27, a large bending moment acts on the suspension hook bolt 27. However, since the flange portion 27 is in close contact with the side surface of the bed 4 in a wide area, the force acting on the flange portion 27 due to the bending moment is dispersed and reduced, and the hanging hook bolt 27 is not deformed.

  In the present embodiment, the suspension hook bolts 27 having such a special shape are used as the attachment bolts 25, and the extension bed 15 is attached to the bed 4. The flange portion 27b of the suspension hook bolt 27 comes into close contact with the vertical plate portion 19 of the extension bed 15 over a wide area. By the way, in the present embodiment, the slits 23 are formed in the extension bed 15 as described above. These slits 23, 23 are aligned with the positions of the hanging hook bolts 27, 27. Therefore, in the present embodiment, the vertical injection molding machine 1 can be suspended without removing the extension bed 15 with the extension bed 15 attached. That is, the hanging hooks are inserted through the slits 23 and 23 and engaged with the shaft portions 27c and 27c of the hanging hook bolts 27 and 27. Then, the vertical injection molding machine 1 can be suspended without the extension bed 15 being hindered.

  The extension bed 15 according to the present embodiment can be variously modified. In the present embodiment, it has been described that the slits 23 are provided, but the slits 23 are not necessarily required. These slits 23 are provided so as not to hinder the hanging hook. This is because once the vertical injection molding machine 1 is installed in the factory, there is little opportunity to carry it, so that it is only necessary to remove the extension bed 15 when it becomes necessary to suspend it. When the slits 23 are not provided, the upper surface of the extension bed 15 can be widely used, and there is no restriction on the placement of the auxiliary device F. Other variations are possible. For example, the extension bed 15 may be provided at another place in the vertical injection molding machine 1. In the vertical injection molding machine 1, an operation terminal, an emergency stop button, and the like are provided at predetermined positions. For example, a direction in which these operations can be performed can be referred to as an operation side. Can be implemented. Although the extension bed 15 has been described as being provided on the side, that is, on the side as viewed from the operation side, it may be provided on the operation side. Alternatively, it may be provided on the surface opposite to the operation side, that is, on the non-operation side.

DESCRIPTION OF SYMBOLS 1 Vertical injection molding machine 2 Mold clamping device 3 Injection device 4 Bed 5 Fixed platen 6 Upper movable platen 9 Tie bar 10 Lower side die 11 Upper side die 13 Injection nozzle 15 Expansion bed 16 Nut 19 Vertical plate part 20 Horizontal plate part 21 Reinforcing rib 23 Slit 25 Mounting bolt 27 Bolt for hanging hook 27b Flange 27c Shaft

Claims (3)

A vertical injection molding machine in which a fixing plate of a mold clamping device is fixed to a top plate of a bed,
The vertical injection molding machine is configured such that an expansion bed that expands the bed to the side thereof is detachably mounted, and the expansion bed is provided so as to open laterally at a side portion of the bed. A vertical injection molding machine characterized in that a predetermined mounting bolt is fastened to a plurality of nuts.   2. The vertical injection molding machine according to claim 1, wherein an upper surface of the extension bed is substantially flush with an upper surface of the bed when the extension bed is attached to the bed. Vertical injection molding machine.   3. The vertical injection molding machine according to claim 1, wherein the mounting bolt is a hanging hook bolt having a head having a predetermined shape, and the expansion bed is aligned with a mounting position of the mounting bolt. When the vertical injection molding machine is lifted by the hanging hook, the hanging hook is inserted from the slit to engage with the head of the hanging hook bolt. A vertical injection molding machine characterized in that:

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