JPH033380Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a mold temperature control device for an injection molding machine, and in particular can easily achieve mold attachment to a die plate in a mold clamping device. The present invention relates to a mold temperature control device.

[Conventional technology]

In general, mold temperature control has a large effect on the quality of molded products and molding work efficiency, and has become an important element in operational management in injection molding.

For example, in order to suppress crystallization and increase the amorphous portion by cooling the mold quickly to obtain a transparent molded product, the mold temperature must be at least 5 to 5.
The temperature must be kept within 25°C. Therefore, in order to maintain the mold temperature in this manner, means for passing water through the mold, known as the so-called individual connection method and the centralized connection method, have been used.

That is, the former individual connection method, as shown in FIG. 1, leads out a plurality of water supply branch pipes 12 and drainage branch pipes 14 from each side of the opposing mold 10,
The water supply branch pipe 12 is directly inserted or connected to a plurality of water supply guides 18 arranged in the water supply main pipe 16 using a coupler, and the drainage branch pipe 14 is connected to the water supply main pipe 2.
This configuration is connected to the receiving portion 22 of No. 0. On the other hand, in the latter centralized connection method, as shown in FIG. A drain connector 4 communicates with one side of the mold 34 via a valved water supply branch pipe 32 and has one end connected to a receiving portion 38 of a drain main pipe 36.
0 is connected to the other side of the mold 34 via a plurality of drainage branch pipes 42 arranged at predetermined intervals.

[Problem that the invention attempts to solve]

According to these conventionally used mold temperature control means, each of them is equipped with various valve devices as elements constituting the mold passageway, so it is necessary to attach these to the die plate that constitutes the mold clamping device. In this case, manual operations are inevitably required to open and close the various valve devices, making it difficult to automate mold mounting in the mold clamping device. In particular, when a passageway is provided in the movable die plate, the processing operation becomes complicated. In other words, it is not possible to provide water passages in areas that interfere with the T-slots for mounting molds provided on the movable die plate or with the attachment holes of the product extrusion rods that pass through the movable die plate. In addition, it becomes difficult to provide a passageway at a location suitable for automation of mold mounting, and since there are many restrictions on processing operations, it takes time and effort to drill holes for the passageway, increasing processing costs.

Therefore, the purpose of this invention is to be able to construct a water flow circuit that easily and reliably controls the temperature of the mold simply by mounting the mold on the die plate, and to fully automate mold mounting in the mold clamping device. The object of the present invention is to provide a mold temperature control device that can achieve the above objectives.

[Means to solve the problem]

The mold temperature control device according to the present invention includes a pair of molds that are removably attached to a pair of die plates constituting a mold clamping device. In a mold temperature control device that configures a water flow circuit for controlling mold temperature by being attached to a movable die plate, projecting members are provided at both ends in the longitudinal direction of the movable die plate, and water supply passages and drainage passages are provided in these projecting members. and a bracket part is provided on both sides of the mold, and a water supply guide and a drainage guide are provided in these bracket parts, and these guides are respectively communicated with a water passage provided inside the mold, and each of the above-mentioned The present invention is characterized in that each water passage opening end of the projecting member and each guide opening end of each of the brackets are brought into close contact with each other by abutting each other via a sealing member.

[Effect]

According to the mold temperature control device according to the present invention, a passageway is provided inside each of the pair of molds that are detachably attached to the pair of die plates constituting the mold clamping device, and these molds are connected to each of the above-mentioned molds. In a mold temperature control device that configures a water flow circuit for controlling mold temperature by being attached to a die plate,
By providing a protruding member on the movable die plate and providing a water supply passage and a drainage passage on each of the protruding members, the movable die plate does not have a water passage, and therefore the die plate and the mold can be easily attached to each other. Connection of the water circuit can be reliably achieved by abutting the protruding member provided on the movable die plate with the mold. Therefore, according to the mold temperature control device of the present invention, it is possible to easily automate the mounting of the mold in the mold clamping device.

〔Example〕

Next, embodiments of the mold temperature control device according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 3 shows an embodiment of the mold temperature control device according to the present invention. That is, in FIG. 3, reference numerals 72 and 46 respectively indicate a movable die plate and a fixed die plate constituting the mold clamping device.
2 and a fixed mold 58 are attached.

However, in this embodiment, protruding members 74 and 76 are provided at both ends of the movable die plate 72 in the longitudinal direction.
A water supply passage 78 is provided in the protrusion member 74, and a drainage passage 80 is provided in the protrusion member 76.
will be established. Further, the movable mold 82 is provided with a corrugated water passage 92, and bracket portions 84, 86 are provided on both sides of the movable mold 82, a water supply guide 88 is provided on one bracket portion 84, and a water supply guide 88 is provided on the other bracket portion A drainage guide 90 is provided in the drain guide 90, and both guides 88, 90 are connected to the water passage 92, respectively.

On the other hand, the fixed die plate 46 is provided with a water supply passage 50 and a drainage passage 54, and the fixed mold 58 is provided with a corrugated water passage 62.

For the movable die plate 72 and the fixed die plate 46 configured in this way, the movable die 8
2 and fixed mold 58, on the movable die plate 72 side, by butting the bracket parts 84, 86 of the movable mold 82 against the protruding members 74, 76, respectively, the passage for mold temperature adjustment is immediately established. A water circuit is constructed. Also, on the fixed die plate 46 side, simply by attaching the fixed mold 58 thereto, a water flow circuit for controlling mold temperature is immediately constructed.

In this case, the water supply passage 78 and the water supply guide 88 and the drainage passage 80 and the drainage guide 90 of the protruding members 74 and 76 and the bracket parts 84 and 86 respectively
Sealing members 64 and 66 such as O-rings and spigots are provided at the connection portions with the guides 88 and 90, that is, at the open end sides of the guides 88 and 90, respectively, for sealing.
Similarly, the fixed die plate 46 and the fixed mold 5
8, seal members 64 and 66 are provided at the connection portions between the water supply passage 50 and the drainage passage 54 and the water passage 62, that is, on the open end side of the water passage 62, respectively.
Provide a seal. Additionally, reference numeral 68
shows a knockout pin which is held at one end of the plunger 70 and is used to take out the molded product from the movable mold 82.

[Effect of idea]

As is clear from the embodiments described above, according to the present invention, protruding members are provided at both ends of the moving die plate in the longitudinal direction, and water supply passages and drainage passages are provided on these protruding members, respectively. A bracket portion is provided, and a water supply guide and a drainage guide are provided in these bracket portions, and these guides are respectively communicated with a water passage provided inside the mold, and the opening end of each water passage of each of the protruding members and the water passage guide are provided in the bracket portion. Since the respective guide opening ends of each bracket are brought into close contact with each other through the sealing member, automatic mounting of the mold in a mold clamping device, which has been difficult in the past, can be easily achieved.

In particular, the movable die plate is not only easy to process because it does not have a passageway, but also easy to handle because it only needs to have the function of mounting a mold. Therefore, in order to connect the water passage circuit between the mold and the protruding member, the mold is attached to the movable die plate and matched with the protruding member at the same time, thereby easily and reliably constructing the water passage circuit. ,
Water flow work can be started immediately.

In addition, in the device of the present invention, since the water passage circuit is constructed by butting the protruding member and the mold, it is possible to provide a sealing member at the opening end of the water passage of the mold and achieve reliable sealing. The sealing member is easy to replace, and the effect of contributing to the automatic attachment of the mold to the movable die plate described above and the full automation of the mold temperature control device is extremely large.

[Brief explanation of drawings]

FIGS. 1 and 2 are schematic explanatory views of a conventional mold temperature control device, and FIG. 3 is a sectional view of essential parts showing an embodiment of the mold temperature control device according to the present invention. 46...Fixed die plate, 50...Water supply passage, 54...Drainage passage, 56...Moving mold, 58
... Fixed mold, 62 ... Corrugated water passage, 64, 66
... Seal member, 68 ... Knockout pin, 7
0... Plunger, 72... Moving die plate,
74, 76...Protruding member, 78...Water supply passage, 8
0... Drain passage, 82... Moving mold, 84, 86
... Bracket section, 88 ... Water supply guide, 90 ...
...Drainage guide, 92...Corrugated waterway.

Claims (1)

[Claims for Utility Model Registration] A passageway is provided inside each of a pair of molds that are detachably attached to a pair of die plates constituting a mold clamping device, and these molds are attached to each of the die plates. In a mold temperature control device which constitutes a water flow circuit for controlling mold temperature, projecting members are provided at both longitudinal ends of the movable die plate, and water supply passages and drainage passages are provided in these projecting members, respectively. On the other hand, bracket portions are provided on both sides of the mold, and a water supply guide and a drainage guide are provided in these bracket portions, and these guides are respectively communicated with water passages provided inside the mold, so that each of the protruding members A mold temperature control device characterized in that each water passage opening end and each guide opening end of each of the brackets are butted and brought into close contact with each other via a sealing member.