WO2014046132A1 - Molding machine - Google Patents

Abstract

In order to provide a molding machine provided with a frame such that it is possible to easily perform necessary fabrication by being lightweight and highly rigid, a frame (1) that carries a clamping device (2) and an injection machine (3) is configured from: a bottom structural body (11); and a top structural body (12) that is a rectangular parallelepiped structure assembled on the bottom structural body. The top structural body (12) is configured from the combination of a plurality of vertical plates (124) to which a window hole (124a) is provided at a desired location. By contrast, the bottom structural body (11) is formed, with the entirety being frame-shaped, from: a primary member (111) comprising two pieces of mold steel disposed in parallel to each other; and a lateral beam (112) comprising a plurality of pieces of mold steel that connect the two pieces of primary member. The lateral beams (112) are disposed at both ends of the primary member (111) and at positions facing both end sections of the window hole (124a) provided to the top structural body (12).

Description

Molding machine

The present invention relates to a molding machine such as an injection molding machine and a die-casting machine, and more particularly to a configuration of a frame on which a mold apparatus, a mold clamping apparatus, an injection apparatus, an ejection apparatus, and the like are mounted.

The injection molding machine is a mold device composed of a fixed mold and a movable mold, a mold clamping device that opens and closes the mold apparatus, and a plasticized resin material is injected into a cavity formed in the mold apparatus. An injection device for filling and an ejecting device for taking out a molded product from the mold device, etc., are constructed. Each of these devices is mounted on a frame-shaped structure called a frame. In order to suppress the vibration generated during operation and to prevent the positional displacement of each device during mold clamping and injection and to manufacture high quality molded products, the frame for the injection molding machine has high rigidity. There is a strong need to be. The situation is the same for the frame for the die casting machine.

The applicant of the present invention firstly, as a frame for an injection molding machine, a longitudinal member disposed in parallel with each other, a flat plate member for a base fixed to the upper surface of the longitudinal member, and a bottom portion fixed to the bottom surface of the longitudinal member. A member composed of a flat plate member and a reinforcing member having a frame structure fixed to at least two of these members has been proposed (see FIG. 1 of Patent Document 1). This frame is formed of I-shaped steel, C-shaped steel or H-shaped steel in which the vertical member has a height dimension substantially equal to the frame height.

The frame of this configuration has a rectangular parallelepiped structure composed of a vertical member, a base flat plate member, and a bottom flat plate member, and is configured to carry the entire weight of each mounted device by the vertical member. The longitudinal direction and the main operating direction of the injection molding machine coincide with each other, and it has a very simple structure and high rigidity. In addition, since the internal space can be made wide and simple, it is possible to easily store electrical components, product transfer devices, hydraulic devices, hydraulic pipes, and the like. Further, since the reinforcing member having a frame structure is arranged between the vertical members, the reinforcing member functions as if it is a bamboo node, and the strength of the frame can be remarkably improved by simple reinforcement.

Japanese Patent Application Laid-Open No. 2000-084979

However, in the frame described in Patent Document 1, it has been pointed out that since the vertical member is formed of a large steel plate having a large height, it is difficult to assemble and transport the frame due to its large weight. In addition, it is necessary to provide through holes for passing electric wires and pipes on the front and back of the frame for the injection molding machine, and it is necessary to provide mounting holes for attaching anti-vibration rubber on the bottom. In the high-rigidity frame described in Patent Document 1, it has been pointed out that it is difficult to perform these processes because the vertical member is formed of a large and heavy mold steel.

The present invention has been made in view of such a state of the art, and an object of the present invention is to provide a molding machine including a frame that is lightweight and highly rigid and can easily perform necessary processing. There is.

In order to solve the above-described problems, the present invention provides a mold clamping device that opens and closes a mold device, an injection device that injects and fills a molding material into a cavity formed in the mold device, and each of these devices. The frame includes a bottom structure and a rectangular parallelepiped upper structure assembled on the bottom structure, and the upper structure includes: It consists of a combination of a plurality of plates with window holes in the required part, and the bottom structure is composed of two main steels arranged in parallel to each other and these two main materials The horizontal crosspieces are formed in a frame shape with a plurality of crosspieces made of steel, and the horizontal crosspieces are opposed to both end portions of the main material and both side portions of the window holes formed in the upper structure. It is characterized by being placed in position .

According to such a configuration, the frame of the molding machine is formed by combining a bottom structure formed into a frame shape by combining a plurality of steel molds and a plurality of plates, and assembled on the bottom structure. Therefore, the weight can be reduced as compared with a conventional frame having a large and heavy vertical member made of I-shaped steel, C-shaped steel or H-shaped steel as an essential component. In addition, according to the above-described configuration, a large and heavy vertical member is provided in the required portion of each plate member constituting the upper structure because the window holes necessary for wiring and piping routing and maintenance of each part of the molding machine are opened. As compared with the case of opening a window hole in the window, the processing of the window hole can be facilitated. Similarly, according to the above configuration, since the vibration-proof rubber mounting holes can be opened in the relatively light main material constituting the bottom structure, the vibration-proof rubber mounting holes are opened in a large and heavy vertical member. Compared to the above, it is possible to facilitate the processing of the vibration-proof rubber mounting holes. Furthermore, according to the above configuration, since the horizontal beam of the bottom structure is arranged at a position facing both side portions of the window hole opened in the upper structure, the rigidity reduction due to the opening of the window hole can be reduced by the horizontal beam. Therefore, the frame can be a highly rigid frame as a whole.

Further, the present invention is characterized in that, in the molding machine having the above-described configuration, an anti-vibration rubber mounting hole is provided in a required portion of the main material.

According to this configuration, since the vibration-proof rubber mounting hole is opened in the main material of the bottom structure, the mounting hole is larger than the case where the vibration-proof rubber mounting hole is opened in the vertical member made of large and heavy steel. Can be made easier.

In the molding machine having the above-described configuration, the upper structure includes a bottom plate that covers an upper surface of the bottom structure, a top plate on which the mold clamping device and the injection device are mounted, and the bottom plate and the top plate. And a vertical plate connecting the two.

According to such a configuration, the upper structure includes the bottom plate that covers the upper surface of the bottom structure and the top plate on which the mold clamping device and the injection device are mounted. The mold clamping device and the injection device can be easily mounted.

According to the present invention, a frame for a molding machine is composed of a bottom structure and a rectangular parallelepiped upper structure assembled on the bottom structure, and a window hole is formed in a required portion of the upper structure. In addition, since the crosspieces are disposed in the bottom structure at positions opposite to the both side portions of the window hole established in the upper structure, a vertical member made of large and heavy steel is an essential component. Compared with this frame, the weight can be reduced while maintaining the required rigidity, and the processing of the window hole and the vibration-proof rubber mounting hole can be facilitated.

It is a front view of the molding machine which concerns on embodiment. It is the perspective view seen from the front side of the frame concerning an embodiment. It is the perspective view seen from the back side of the frame concerning an embodiment. It is the perspective view seen from the bottom part structure side of the frame concerning an embodiment. It is a perspective view of the bottom part structure concerning an embodiment. It is a principal part enlarged view which shows the attachment state of the vibration isolator which concerns on embodiment.

Hereinafter, an embodiment of a molding machine according to the present invention will be described with reference to the drawings. In the following embodiments, an injection molding machine will be described as an example, but the same can be applied to a die casting machine.

As shown in FIG. 1, the molding machine according to the embodiment includes a frame 1, a mold clamping device 2 and an injection device 3 mounted on the frame 1.

The mold clamping device 2 is disposed opposite to each other at a predetermined interval, and is disposed between the tail stock 21 and the fixed die plate 22 fixed on the frame 1, and between the tail stock 21 and the fixed die plate 22, respectively. A movable die plate 23 that is slidably mounted on the frame 1, and a mold opening / closing mechanism that both ends are connected to the tailstock 21 and the movable die plate 23, and that reciprocates the movable die plate 23 by the rotational force of a motor (not shown). And a mold clamping mechanism 24. A fixed die 25 is mounted on the fixed die plate 22, and a movable die 26 is mounted on the movable die plate 23. In the mold clamping device 2 of the present example, the mold opening / closing / clamping mechanism 24 includes a toggle link mechanism 24a, a ball screw mechanism 24b that converts a rotational force of a motor (not shown) into a straight advance force, and transmits it to the toggle link mechanism 24a. It is composed of An ejecting device (not shown) for taking out a molded product from the die device is provided in the vicinity of the die device composed of the fixed die 25 and the movable die 26.

In the above configuration, when the motor is driven to rotate in a predetermined direction, the screw shaft of the ball screw mechanism 24b moves forward, the toggle link mechanism 24a extends, and the fixed mold 25 and the movable mold 26 are fixed to each other. The mold is clamped by the mold clamping force. As a result, the molten resin can be injected and filled into the mold cavity formed between the fixed mold 25 and the movable mold 26. After the injection and filling of the molten resin, when the motor is driven in reverse, the screw shaft of the ball screw mechanism 24b retracts, the toggle link mechanism 24a contracts, and the movable mold 26 is opened from the fixed mold 25. As a result, the molded product can be taken out by the ejecting apparatus.

The injection device 3 includes a cylindrical heating cylinder 32 having an injection nozzle 31 attached to the tip, an injection screw 33 housed in the heating cylinder 32 so as to be rotatable and capable of moving forward and backward, and an injection screw 33 to be rotatable. A supporting member 34 to be supported, a screw driving unit 35 for rotating and moving the injection screw 33 forward and backward, a hopper 36 for storing the raw material resin, and a raw material resin stored in the hopper 36 are supplied into the heating cylinder 32. The hopper block 37 is mainly constituted. A band heater 38 for heating the resin supplied into the heating cylinder 32 is wound around the outer periphery of the heating cylinder 32. The injection nozzle 31 is pressed against the fixed mold 25 during continuous operation.

When the injection screw 33 is rotationally driven in the heating cylinder 32, the raw material resin in the hopper 36 is introduced into the heating cylinder 32 accordingly. The raw material resin introduced into the heating cylinder 32 is melted by the frictional heat and shearing heat generated by the rotational drive of the injection screw 33 and the heat generated by the band heater 38 and is sequentially stored at the tip of the heating cylinder 32. When a predetermined amount of molten resin is stored at the tip of the heating cylinder 32, the injection screw 33 is driven forward, and the predetermined amount of molten resin stored at the tip of the heating cylinder 32 is injected and filled into the mold cavity. Is done. Thereby, a molded product having a predetermined shape is obtained.

Hereinafter, the configuration of the frame 1 on which the mold clamping device 2, the injection device 3, the mold device, and the ejection device are mounted will be described with reference to FIGS. As shown in FIGS. 2 to 4, the frame 1 according to this embodiment includes a bottom structure 11 and a rectangular parallelepiped upper structure 12 assembled on the bottom structure 11.

As shown in FIG. 5, the bottom structure 11 includes a main material 111 made of two H-shaped steels arranged in parallel to each other, and a plurality of the main materials 111 that connect the two main materials 111 (in the example of FIG. 3, The whole is formed in a long rectangular frame shape with a horizontal crosspiece 112 made of 7) C-shaped steel. Two of the plurality of horizontal bars 112 are arranged at the end of the main material 111, and the other plural (five in the example of FIG. 3) horizontal bars 112 are opened in the upper structure 12. It arrange | positions in the position which opposes the both-sides part of a window hole. This will be described in detail later with reference to FIG. Each main material 111 and each crosspiece 112 are assembled by welding. A plurality of vertical reinforcing pieces 113 are welded to the outer surface of the main material 111. In this example, the main material 111 is formed of H-shaped steel and the cross beam 112 is formed of C-shaped steel. However, the gist of the present invention is not limited to this, and I-shaped steel and C-shaped steel. Or the shape steel selected from H-shape steel etc. can be used suitably. In addition, a flat steel plate can be bent and formed into a required shape such as a C shape.

As shown in FIG. 4, a plurality of anti-vibration rubber mounting holes 114 are formed in a predetermined arrangement on the lower pieces of the two structural steels constituting the main material 111. Since the main material 111 is formed of a smaller and lighter shape steel at each step than the vertical member described in Patent Document 1, the opening work of the vibration-proof rubber mounting hole 114 can be easily performed. The anti-vibration rubber mounting hole 114 is opened between two longitudinal reinforcing pieces 113 arranged adjacent to each other as shown in FIG. In this way, as shown in FIG. 6, since the anti-vibration rubber 115 can be installed on the highly rigid portion reinforced by the vertical reinforcing piece 113, the heavy frame 1 is supported by the plural anti-vibration rubbers 115. Even in this case, the deformation of the frame 1 can be prevented.

As shown in FIG. 6, the anti-vibration rubber 115 includes an anti-vibration rubber main body 115 a formed in a disc shape, and a mounting bolt whose one end is fixed to the central portion of the anti-vibration rubber main body 115 a and whose tip is erected vertically. 115b and a nut 115c screwed to the mounting bolt 115b. As shown in FIG. 6, the attachment of the anti-vibration rubber 115 to the main material 111 is performed by inserting a mounting bolt 115b into the anti-vibration rubber attachment hole 114 formed in the main material 111 from below the main material 111, and a nut 115c. It is done by fastening at.

2 to 4, the upper structure 12 includes a bottom plate 121 that covers the upper surface of the bottom structure 11, a top plate 122 on which the mold clamping device 2 and the injection device 3 are mounted, and the plates 121 and 122. A plurality of vertical plates 124 disposed between the two are formed in a rectangular parallelepiped structure. Each of these plates and each member is assembled by welding. The bottom plate 121 and the bottom structure 11 are also assembled together by welding. As a result, the rigidity of the upper structure and thus the frame can be increased.

On the front side of the upper structure 12, a combination of a plurality of vertical plates 124 and a plurality of horizontal plates 123, a multistage accessory case 123 a, a control device storage portion 123 b that controls the entire molding machine, and a molding A control panel storage portion 123c for supplying power to the machine is formed. On the back side of the upper structure 12, a housing portion 123 d such as an amplifier is formed by combining a plurality of vertical plates 124. Spaces for storing various devices are formed between the vertical plates 124, and necessary parts of the vertical plates 124 are used for routing of wirings and piping and maintenance of each part of the molding machine. Necessary window holes 124a are opened. Thus, by opening the window hole 124a in the vertical plate 124, the opening operation of the window hole 124a can be facilitated. As shown in FIG. 4, the horizontal rail 112 of the bottom structure 11 described above is disposed at a position facing both side portions of the window hole 124 a formed in a required portion of the vertical plate 124. Thereby, since the fall of the rigidity by having opened the window hole 124a can be suppressed in the crosspiece 112, it can be set as a highly rigid frame as a whole.

As shown in FIGS. 2 and 3, the top plate 122 has four through holes for dropping the grease leaked from the toggle link mechanism 24 a on the mounting side of the mold clamping device 2 into a grease receiver (not shown) disposed below. A hole 122a is opened, and a large-diameter through-hole 122b for taking out a molded product from the mold apparatus is opened in the adjacent portion. On the other hand, on the mounting side of the injection device 3, a plurality of seat plates 122c for fixing the injection device are provided in a predetermined arrangement. Furthermore, a hook 122 d for engaging a suspension device such as a chain block is fixed to the central portion of the top plate 122.

In the above embodiment, the frame-type member 123 is provided in a part of the upper structure 12, but the upper structure 12 can be configured only by the combination of the vertical plates 124.

DESCRIPTION OF SYMBOLS 1 Frame 2 Clamping apparatus 3 Injection apparatus 11 Bottom structure body 111 Main material 112 Horizontal beam 113 Vertical reinforcement piece 114 Anti-vibration rubber mounting hole 115 Anti-vibration rubber 12 Upper structure 121 Bottom plate 122 Top plate 122a Through hole 122b Through hole 122c Seat Plate 122d Hook 123 Frame member 123a Small box 123b Control device storage 123c Control panel storage 124 Vertical plate 124a Window hole

Claims (4)

1. A mold clamping device for opening and closing the mold device, an injection device for injecting / filling a molding material into a cavity formed in the mold device, and a frame for mounting these devices in a predetermined arrangement are provided. In the molding machine,
   The frame includes a bottom structure and a rectangular parallelepiped upper structure assembled on the bottom structure.
   The upper structure is composed of a combination of a plurality of plate materials in which window holes are opened in a required portion,
   The bottom structure is entirely formed in a frame shape with a main material made of two steel shapes arranged in parallel to each other and a cross beam made of a plurality of steel shapes connecting the two main materials. The molding machine is characterized in that the cross rail is disposed at a position facing both end portions of the main material and both side portions of the window hole formed in the upper structure.
2. 2. The molding machine according to claim 1, wherein an anti-vibration rubber mounting hole is provided in a required portion of the main material.
3. The upper structure includes a bottom plate that covers an upper surface of the bottom structure, a top plate on which the mold clamping device and the injection device are mounted, and a vertical plate that connects the bottom plate and the top plate. The molding machine according to claim 1.
4. The upper structure includes a bottom plate that covers an upper surface of the bottom structure, a top plate on which the mold clamping device and the injection device are mounted, and a vertical plate that connects the bottom plate and the top plate. The molding machine according to claim 2.

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