Vertical injection molding machine
First Claim
1. A vertical injection molding machine having a pair of dies and a die closing device for opening and closing said dies in a vertical direction, vertical injection molding machine comprising:
- (a) frame means;
(b) an injection unit having an injection nozzle which faces said die closing device disposed in said frame means;
(c) means for shifting said injection unit to a predetermined position; and
(d) a link mechanism having a cylinder, said cylinder being connected to said frame means and said injection nozzle, said cylinder supporting said injection nozzle and moving said injection nozzle from said die closing device in cooperation with said shifting means, and said link mechanism further including link bars which guide said nozzle to move outside of said frame means.
1 Assignment
0 Petitions
Accused Products
Abstract
A vertical injection molding machine having an upper die (26) and a lower die (27) which are adapted to be brought together in the vertical direction by the force produced by a die closing device. The injection molding machine has an injection unit 1 disposed below the lower die (27) and is hinged through a hinge shaft (36) to a truck (35) movable along rails (37), such that the injection unit 1 is swingable vertically about the axis of the hinge shaft (36). The vertical swinging motion of the injection unit 1 is effected by cylinders (38) connected to an injection head (2) of the injection unit (1). A compression forming cylinder device (70) is provided on the lower end of each of a plurality of tie-bars which are connected between the upper die (26) and the lower die (27). Each of the compression forming cylinder devices (70) operates to urge the upper die (26) upward away from the lower die (27 ) through a pressing member (68), thus creating a small clearance between the upper die (26) and the lower die (27) when these dies are held in the closing position by the force of a die closing device (3).
17 Citations
16 Claims
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1. A vertical injection molding machine having a pair of dies and a die closing device for opening and closing said dies in a vertical direction, vertical injection molding machine comprising:
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(a) frame means; (b) an injection unit having an injection nozzle which faces said die closing device disposed in said frame means; (c) means for shifting said injection unit to a predetermined position; and (d) a link mechanism having a cylinder, said cylinder being connected to said frame means and said injection nozzle, said cylinder supporting said injection nozzle and moving said injection nozzle from said die closing device in cooperation with said shifting means, and said link mechanism further including link bars which guide said nozzle to move outside of said frame means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A vertical injection molding machine comprising:
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(a) frame means; (b) an upper die and a lower die which, when brought together, define a die cavity therebetween; (c) a die closing device for causing relative vertical movement between said dies and having a movable platen supporting said upper die and a stationary platen supporting said lower die; (d) an injection unit disposed below said die closing device; (e) means for shifting said injection unit to the outside of said frame; and (f) a compression forming cylinder device for forcibly creating a gap between said upper and lower dies under the influence of the die closing force produced by said die closing device, said compression forming cylinder device being provided coaxially in at least one tie bar between said upper and lower dies. - View Dependent Claims (13, 14, 15, 16)
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Specification