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Mould joining device

A mold clamping device and metal mold technology, which is applied in the field of mold clamping devices, can solve problems such as failure, complex structure of the nut opening action mechanism, increase in cost of the nut opening action mechanism, etc., and achieve the effect of simplifying the structure

Active Publication Date: 2013-07-10
JAPAN STEEL WORKS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the half nut operating mechanism for operating the half nut using the link mechanism becomes complicated.
In addition, by using a link mechanism, the structure of the half nut operating mechanism becomes complicated, and as a result, problems such as failure may occur
Furthermore, due to the structure of the link mechanism, the cost of the half nut operating mechanism may increase

Method used

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  • Mould joining device
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Next, for Figure 4 In the half nut operating mechanism 61 of the mold clamping device 12 of the first embodiment shown, the same components are given the same reference numerals, and the differences will be mainly described. The split nut action mechanism 61 is equipped with springs 64, 66, 68, and 70 at the connecting parts of each part, and the first ball screw nut 41 and the second ball screw nut 41 and the second ball screw are driven by the drive of the servo motor 32 and the rotation of the ball screw 36. The amount of movement of the nut 42 is not reflected as the amount of movement of the first half nuts 37a, 37b and the second half nuts 38a, 38b. Specifically, a bolt 63 is connected between the mounting portion 62 of the first ball screw nut 41 and the moving plate 47 , and a spring 64 is provided around the bolt 63 . In addition, a bolt 65 is connected between the connecting rod 48 and the upper first half nut 37a, and a spring 66 is provided around the bolt...

Embodiment 2

[0050] next, yes Figure 5The split nut operating mechanism 72 of the mold clamping device 71 of the illustrated second embodiment will be described. The mold clamping device 71 of the second embodiment is a type in which a ram 74 provided with a locking portion 74a is fixed to the center of the back surface of the movable platen 73 toward the mold opening and closing direction. In addition, the housing 75 of the split nut actuator 72 is fixed in front of a not-shown mold clamping cylinder. A servo motor 76 serving as a driving mechanism of the split nut operating mechanism 72 is attached to a bracket 77 fixed to the casing 75 . Further, a ball screw 79 is fixed to the drive shaft 78 of the servo motor 76 via a coupling or the like. In addition, the drive shaft and the ball screw may be rotatably provided by being connected by a belt. The ball screw 79 is provided with a first threaded portion 80 and a second threaded portion 81 threaded in a direction opposite to the first...

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Abstract

Provided is a mould joining device having a locknut movement mechanism by using a motor and capable of simplifying its structure without use of a bar linkage in the locknut movement mechanism. In the mould joining device (12) for joining moulds by a mould joining mechanism (22) after locking locknuts (37a, 38b, 37b, 38a) and a locking part (25a) by making a movable metal mould (20) to close to orresist to a fixed metal mould (15) through mould switching mechanisms (26, 27, 28), the locknuts (37a, 38b, 37b, 38a) are driven by using a motor (32) as a drive source of the locknut movement mechanism (29), and a ball guide screw (36) rotating by the motor (32) and having a first screw thread part (39) and a second screw thread part (40) which is used for making screw thread in an opposite direction relative to the first screw thread part (39).

Description

technical field [0001] The present invention relates to a mold clamping device provided with a half nut operating mechanism using an electric motor. Background technique [0002] As a mold clamping device used in an injection molding machine, there are devices that perform mold opening and closing and mold clamping by the same mechanism like a toggle mechanism, and devices that allow a movable metal mold to approach or touch a fixed metal mold by a mold opening and closing mechanism. The mold clamping device is connected to the mold clamping mechanism after locking the half nut and the locking part. The latter type using half nuts is relatively large, and the structure of the mold clamping mechanism through a hydraulic cylinder is more common. In the latter type using a half nut, the driving source for moving the half nut relative to the locking portion is often a hydraulic cylinder as shown in Patent Document 1. However, for reasons such as high-speed operation, energy sa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/64B29C45/66
CPCB29C45/641B29C45/67
Inventor 神野镇绪
Owner JAPAN STEEL WORKS LTD