Clamping device of injection molding machine
A technology of injection molding machine and mold clamping device, which is applied in the field of mold clamping device, and can solve the problems that the mold clamping force cannot be adjusted, and the mechanism that is not an adjustment mold clamping force, etc.
Active Publication Date: 2016-05-04
FANUC LTD
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Problems solved by technology
[0004] However, what is disclosed in Japanese Patent Application Laid-Open No. 2007-253458 is a mechanism for adjusting the mold clamping pressure distribution using both a corrected mold and an uncorrected mold in consideration of the bending of the mold mounting plate. Mechanism to adjust clamping force
In addition, the mechanism disclosed in Japanese Patent Application Laid-Open No. 2011-189575 accommodates a plurality of adjustment members between the fixed platen and the mold mounting plate to make the mold clamping pressure uniform, but the mold clamping force cannot be adjusted.
Method used
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[0021] First, the mold clamping device of the injection molding machine will be described. figure 1 It is an outline of one embodiment of the present invention figure 1 .
[0022] The four corners of fixed disk 1 and rear fixed disk 3 utilize connecting rod 4 to combine, and movable disk 2 is installed at the other end of toggle mechanism 5 that is installed on rear fixed disk 3 . A driving source such as a motor (not shown) is used to advance the crosshead (not shown) of the toggle mechanism 5, extend the toggle lever (not shown), and move the movable plate 2 while sliding along the connecting rod 4. The movable side die 6 b on the movable platen 2 abuts against the fixed side die 6 a attached to the fixed platen 1 . Then, by extending the toggle lever, the connecting rod 4 is extended, and the reaction force of the elongation of the connecting rod 4 generates a mold clamping force. The fixed-side mold 6 a and the movable-side mold 6 b are collectively referred to as the m...
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PROBLEM TO BE SOLVED: To provide a mold clamping device of an injection molding machine which can change mold clamping force generated in each tie bar by installing a reinforcing member outside a stationary platen.SOLUTION: A mold clamping device includes: a reinforcing member 7 which is provided at a position away from the side opposite to the mold holding surface side of a stationary platen 1; an abutting part 8 which abuts the stationary platen 1 and the reinforcing member 7 in a separated state; and connecting members (for example, screws 9) each of which connects the stationary platen 1 to the reinforcing member 7 at a position different from the abutting part 8. The balance adjustment of clamping force is performed by the connecting members. The screw 9, which is a connecting member, is installed to a screw hole opened in the stationary platen 1 through a through hole of the reinforcing member 7. When the screw 9 is tightened, the reinforcing member 7 pulls the stationary platen 1 using the abutting part 8 of the reinforcing member 7 as a fulcrum, whereby deformation can be changed.
Description
technical field [0001] The invention relates to a mold clamping device with the function of deforming a fixed plate. Background technique [0002] In the toggle type mold clamping device, the connecting rod is used to connect the four corners of the fixed plate and the rear fixed plate installed with the toggle mechanism, and the toggle mechanism is used to move the movable plate along the connecting rod to the direction of the fixed plate. The die on the movable platen presses the die mounted on the fixed platen, the pressing force extends the connecting rod, and the elongation of the connecting rod exerts mold clamping force on the die. [0003] A slight deviation in the balance of the clamping force will also destroy the balance of the metal mold cavity, which will affect the accuracy of the molded product. Therefore, it is necessary to adjust the clamping force balance according to the metal mold. Therefore, as shown in Japanese Patent Application Laid-Open No. 2007-25...
Claims
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IPC IPC(8): B29C45/66
CPCB29C45/661
Inventor 土屋信笃
Owner FANUC LTD