JPH0452030Y2 - - Google Patents

Description

[Detailed description of the invention] This invention aims to save labor in sorting out molded products and runners each time they fall from an injection molding machine during the injection process, by replacing the currently used rotating roller type. This is a proposal for improving the separation device.

However, the rotating roller type separation device currently widely used among molding companies is one in which a protruding spiral strip with an appropriate pitch is carved on the surface of the cylindrical portion of a rotating roller. It is clear that this is a device that sorts and separates the molded product and the runner by rotation within the chassis, but in the case of such a rotating roller type separation device, the direction of rotation of the roller Furthermore, due to the necessity of sorting and sorting, the molded products, runners, etc., so-called, must be rotated in the direction of hoisting the molded products, etc., even if it is not desired.
Under these circumstances, it has been common practice to provide a separator near the top dead center of the roller in order to shake off the rolled-up molded products, etc., but between the separator and the roller For example, it is an unavoidable phenomenon that a concave or convex gap equal to the depth of the spiral groove or the height of the rib of the protruding spiral strip is created.

No matter how small the gap in this part is, if the tip part of the molded product or runner, etc. is smaller or equal in size, it may not be the same as the separator. It is conclusive that the occurrence of such a situation would have a serious adverse effect on the quality of the molded product, and it is considered a major problem today. We are in the current situation.

This invention was developed in view of the problems mentioned above, and despite the extremely simple structure and mechanism, 100% of rolled-up molded products, runners, etc.
The structure of this device will be explained based on the embodiment shown in the drawings, which has been devised to have a high practical value for accurately rolling out the device.

An appropriate pitch P is placed on the inner bottom of the chassis C,...
A synthetic resin injection molding machine (not shown in the figure) is manufactured by providing drive rollers D and R on which the spiral strips S, . . . Molded product G sent from
In a molded product separation device configured to sort and separate runners R, ..., etc., the rotational driving force from the drive rollers D and R described above [the drive rollers D and R are supported by a shaft]. Chain wheels D and C rotate drive chain wheels V and C via chains C and H, and a rotational force is applied in the same direction (the direction shown in the figure). The molded product and runner separation device are constructed by pivoting rollers V and R so that the mutual gap becomes the minimum value Min, and S and P in the figure are above the driven rollers V and R. A separator for removing the molded products hoisted near the dead points U and P, L is the drive roller D and R in the chassis C for sorting and sorting the molded products G, ... and the runner R, ... The arrows R and I indicate the winding vector at point a of the drive rollers D and R, and R and O indicate the winding vectors of the drive rollers V and R. The rolling out vectors at the bottom dead center b of R are shown respectively.

Since the present invention is constructed as detailed above,
For example, even if the molded product G, . . . or the runner R, . Depending on the rolling out vector R・O at the bottom dead center b of R,
The action of pushing it out (that is, the action of pushing it back) is always working, and the effect of preventing the curling phenomenon is exhibited.

Furthermore, depending on the form of the molded product or runner, in some cases, even higher precision winding can be achieved by carving spiral stripes of the same size on both the drive and the drive-in roller and interlocking them. Needless to say, it can also be used as a jamming prevention mechanism. Furthermore, by making the rotational speed of the drive rollers V and R higher than those of the drive rollers D and R, it is also possible to increase the dispensing effect (that is, the pushing back action).

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of the main parts with some parts omitted, and FIG. 2 shows a drive roller in which the drive rollers V and R in FIG. 3 is a partially omitted side view of the main parts when engaged with D and R, FIG. 3 is a partially omitted detailed sectional view showing the relationship between the rollers in FIG. 1, and FIG. 5 is a partially omitted detailed cross-sectional view showing the relationship between the rollers, FIG. 5 is a partially omitted enlarged cross-sectional view showing the relationship between the drive rollers D and R of FIG. FIG. 5 is a partially omitted enlarged cross-sectional view showing the meshing state of both the drive and drive rollers shown in the figure. C... Chassis, P,... Pitch, S,... Spiral body, D/R... Drive roller, V/R...
...Driven roller, G, ...Molded product, R,
...Runner, D/C...Drive chain foil, C/H...Chain, V/C...Drive chain foil, Min...Minimum value, U/P...Top dead center, S/P... Separator, L...Gap adjustment plate, K...Constant interval, R/I...Rolling vector, b...Bottom dead center, R/O...Rolling out vector.

Claims (1)

[Scope of utility model registration request] A drive roller with a spiral strip of an appropriate pitch is installed on the inner bottom of the chassis, and by rotating it, the molded products and runners sent out from the synthetic resin injection molding machine are sorted and separated. In the molded product separation device configured to perform Molded products, molded products, etc. in a runner separation device, which have a feature that the molded products, runners, etc. are rolled out during separation by being configured to be pivoted as much as possible. Roll-up prevention mechanism.