JPH11235739A - Continuous injection molding machine by semiautomation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attempt labor-saving of a molding cycle and its making-efficiency by a method wherein continuous molding is executed with a plurality of locks set at specific intervals by a molding cycle by automatic control wherein a process in which a resin from an extruder is poured into a mold of the lock, molded, cooled, and taken out, is preliminarily determined according to a material size of a molded product. SOLUTION: An upper part movable mold can be moved vertically with an air cylinder 8, and for a lower part mold a side plate is disposed in upright in a side part, and a recessed fitting hole in a traverse direction is provided to its upper part. For the upper part movable mold of the lock, a claw becoming freely fittable in and detachable from the fitting hole of the lower part fixed mold is provided, a clamp is slid left and right crosswise with a manually operating part to fit the claw into the fitting hole and release it therefrom, and a linking operation to an open-close motion of the mold with the air cylinder 8 of the upper part movable mold by automatic control. Injection molding is continuously executed by a molding cycle by slide operation of the lock by automatic control and semi-automation which are preliminarily set according to a resin material of a molded product and its size. Continuous molding is automatically executed without any transfer of the mold, and a continuous mass production can be executed by a labor-saving operation of an operator.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a semi-automatic continuous injection molding apparatus for plastic molded articles.

[0002]

2. Description of the Related Art In a conventional injection molding of a plastic product by a mold clamping apparatus, a first step of injecting a heated and melted plastic material into a mold by an extruder and a second step of cooling the molded plastic molded article. The process is roughly divided into a process and a third process in which the mold is opened to take out a cooled molded product. This process is performed by an injection molding method using a single mold device, and a plurality of mold devices are unitized for continuous automatic molding. Although there is an injection molding method, a molding apparatus using a single mold apparatus lacks labor-saving and efficiency, and has difficulty in mass production molding. There is a drawback that requires an assembly station to assemble the open mold plate for removal. For example, JP-A-6-71689.

[0003]

SUMMARY OF THE INVENTION The present invention provides a semi-automatic continuous molding apparatus which is technically effective for an injection molding apparatus which is excellent in molding processing accuracy while saving labor and efficiency of the molding cycle of the molding apparatus. That is the task.

[0004]

Means for achieving the above object are as follows: a lower fixed mold on an injection molding machine base;
A number-order mold-clamping device in which an upper movable mold is set at a predetermined interval; an extrusion device with a check valve connected to a lower fixed mold of the number-order mold-clamping device and sequentially injecting resin; A process of injecting the resin extruded from the extruder into the mold of the mold clamping device, comprising a resin molding process using the mold, and an air cylinder device connected to the upper movable mold of the next mold clamping device. The cooling process and the opening of the mold and the process of taking out the molded product are successively performed by the molding clamps set at the predetermined intervals according to the molding cycle under automatic control determined in advance according to the material dimensions of the molded product. Wherein the mold clamping device is provided with a fitting hole in a side plate provided in a lower fixed mold, and a fitting claw provided in an upper movable mold to manually operate the upper movable mold in a lateral direction. Through the sliding operation of the upper movable mold It is out fitted to the side plate fitting hole parts fixed mold in which the gist of continuous injection molding apparatus according to the semi-automatic by mold clamping device which is provided to the mold clamping or releasing the lower fixed mold and the upper movable mold.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiments of the present invention will be described below in detail. FIG. 1 is an overall schematic view of the continuous injection molding apparatus of the present invention, and FIG.
3 is a front view showing the entire mold of the mold clamping device, FIG. 3 is a plan view of FIG. 2, FIG. 4 is an upper mold of the mold clamping device, FIG. 5 is a lower mold of the mold clamping device, and FIG. 3 shows a combination of an upper mold and a lower mold. In FIG. 1, reference numeral 1 denotes a mold clamping apparatus of the present invention, 2 denotes a machine frame, 3 denotes a machine base, and 7 injection molding dies a to g are mounted on the machine base 3.
This is a standard specification mold clamping device set in a series. The molding of the resin molded product is heated and fluidized (plasticized) extruded from the extruder 4.
The resin molding material thus obtained is injection-molded into the dies a to g of the mold clamping device in sequence through automatic control by a constant molding cycle and semi-automatic lateral manual sliding operation of the mold clamping device. 5 is a runner, 6 is a valve device provided with a check valve 7, 8
Is an air cylinder of the mold clamping device, 9 is a guide rod of the cylinder, 10 is an automatic control unit of the injection molding device, and 17 is a manual operation unit.

Next, the injection molds a to g of the mold clamping apparatus shown in FIG. 1 are assembled by a lower fixed mold 11 of FIG. 5 and an upper movable mold 12 of FIG. The air cylinder 8 shown in FIG. Lower fixed mold 1
1 has a side plate 13 erected on the side and a recessed insertion hole 14 in the lateral direction provided on the upper side. The upper movable mold 12 of the mold clamping device in which the upper movable mold and the lower fixed mold shown in FIG. 6 are combined has a claw 15 which can be inserted into and removed from the insertion hole 14 of the lower fixed mold, and the clamp 16 is operated by a manual operation unit. 17, the claw 15 is inserted into or removed from the insertion hole 14 by being slid in the horizontal direction as viewed from the right and left, and linked to the opening / closing operation of the mold by the air cylinder of the upper movable mold 12 under automatic control. Reference numeral 18 is a reinforcing material for the mold.

[0007] Injection molding is carried out by a predetermined automatic control and semi-automatic slide operation of a mold clamping device according to the resin material of the molded article, for example, a material such as vinyl chloride or polyolefin, and the size of the molded article. Continuous injection molding by molding cycle.

[0008]

The present invention is characterized in that continuous and efficient injection molding is carried out by means of semi-automatic injection molding by the above-mentioned several-order mold clamping device. It is to be molded. Structurally, injection and cooling are performed automatically and continuously without moving the mold, so it is advantageous for opening and closing the mold and taking out molded products. The benefits are great.

[Brief description of the drawings]

FIG. 1 is an overall schematic diagram of the device of the present invention.

FIG. 2 shows a main part of a mold clamping operation of the mold clamping apparatus.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is an overall side view of an upper movable mold.

FIG. 5 is an overall side view of a lower fixed mold.

FIG. 6 is an overall assembly view of the mold clamping dies of FIGS. 4 and 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mold clamping apparatus 2 Machine frame 3 Machine base 4 Extruder 5 Runner 6 Valve 7 Check valve 8 Air cylinder 9 Guide rod 10 Automatic control unit 11 Lower fixed mold 12 Upper movable mold 13 Side plate 14 Fitting hole 15 Claw 16 Clamp 17 Manual operation part 18 Reinforcement

Claims (2)

[Claims] 1. A lower fixed mold having a lower fixed mold, an upper movable mold set at predetermined intervals on a machine base of an injection molding apparatus, and a lower fixed mold of the several order mold clamp apparatus. Connect,
An extrusion device with a check valve for sequentially injecting resin, and an air cylinder device connected to the upper movable mold of the above-mentioned several-order mold clamping device. The mold injection step, the mold clamping and molding step, the mold cooling step, and the mold opening and removing step of the mold are performed by a molding cycle with automatic control determined in advance according to the material dimensions of the molded article, A semi-automatic continuous injection molding apparatus, wherein molding is performed successively and sequentially by a number of mold clamping devices set at the predetermined intervals. 2. The mold clamping device according to claim 1, wherein a fitting hole is provided in a side plate provided in the lower fixed mold, and a fitting claw is provided in the upper movable mold so that the upper movable mold is manually operated in a lateral direction. It is characterized in that a fitting claw of the upper movable mold is fitted into and disengaged from the side plate fitting hole of the lower fixed mold via a slide operation, so that the lower fixed mold and the upper movable mold are clamped or released. Semi-automatic continuous injection molding equipment.