Square dowel is a variant of angle pins. It has a rectangular cross section. The square dowel can pull the core and press the slider. Therefore it does not require a wedge. The inclination angle of the square dowel is large, and the core-pulling distance is greater than angle pin. The square dowel can also be composed of several segments with different slopes. First obtain a large core pulling force with a small slope, and then obtain a large core pulling distance with a large slope.
1.Square dowel core pulling mechanism-1
Square dowel is a variant of angle pins. It has a rectangular cross section.
2.Square dowel core pulling mechanism-2
Square dowel is a variant of angle pins. It has a rectangular cross section. It can be made into sections with different slopes.
3.Square dowel core pulling mechanism-3
During the mold opening process, after the movable mold has a certain gap in the empty stroke, the square dowel toggles the slider to complete the core pulling. Continue to open the mold, and the plastic part was ejected.
4.Guide pin and square dowel core pulling mechanism.
Install the square dowel and the slider outside the fixed mold. The slider supports the outer core pulling mechanism with two guide nails.
5.Embedded type square dowel core pulling mechanism.
When the mold is opened, the square dowel is in contact with the cylindrical pin. Drive the slider to complete the core pull. Continue to open the mold, and the plastic part was ejected.
6.The square dowel in the mold is cored, and the wedge rod is reset.
During the mold opening process, the square dowel drives the roller to complete the inner core pulling of the plastic part. When the mold is closed, the roller is pushed by the wedge bar to make the slider enter the closed mold state.
7.Square dowel secondary core pulling mechanism.
When the mold is opened, due to the role of the plastic part pin, the square dowel first drives the outer slider, so that the core is twitched, and when the drawing is continued to a certain distance, the plastic part pin is disengaged. Inner slider, the second stage core pulling is started by the stop screw. The inner slider is driven at this time. Thereby, the core is driven to complete the whole core pulling.
8.Fixed die spring-loaded square dowel core pulling mechanism.
When the mold is opened, under the action of the spring, the movable template is ejected a certain distance, and at the same time, the square dowel toggles the slider to complete the fixed core pulling. Continue to open the mold, parting the main parting surface, and bring the plastic part to the movable mold.
9.Variable angle square dowel core pulling mechanism.
During the mold opening process, the square dowel is first affected by a small bevel. In order to have a large initial drawing force, after the slider is driven to move a certain distance, it will be affected by a large oblique angle. To accommodate longer core pulling distances, core pulling is completed.
10.Square dowel inner core pulling mechanism
The inner core is pulled out with a square dowel, and the movable plate is parted first when the mold is opened. The square dowel drives the slider to complete the inner core pulling.
11.Square dowel delay parting core pulling mechanism-1
This is a typical square dowel delay parting mold with delayed side parting and no push-out device.
12.Square dowel delay core pulling mechanism--2
This structure cleverly uses the delayed side core pulling effect of the square dowel, so that the plastic part is pulled out in the main core and then the side core pulling is performed.