JP5786796B2 - Clamping device with temperature control function - Google Patents

Description

  The present invention relates to a mold clamping device having a temperature control function for adjusting a temperature by heating and cooling a mold used for casting a molten metal, molding a resin material, or the like.

  Conventionally, in molten metal casting, resin material molding processing, etc., in order to keep the temperature of the mold high in order to ensure fluidity of the molten metal or molten resin, or to suppress manufacturing sinks and warpage The mold temperature is controlled. For this reason, the method of installing a heater in a metal mold | die or flowing a heat medium in a metal mold | die is taken. For the purpose of further strengthening this method, the present applicant has proposed a method known from Patent Document 1.

JP 2009-208127 A

  In Patent Document 1, a pressure casting mold is provided with at least one heat insulating layer that at least partially defines a region of a mold in which heating means and / or cooling means are disposed. Thereby, the movement of heat between the regions of the mold is suppressed, and the temperature adjustment can be more thermally independent for each region of the mold.

  However, in these methods, since the die requires a heater or a hole in the heat medium path, the shape becomes complicated and the die cost is high. In addition, it is necessary to connect heater wiring and heat medium piping when exchanging the dies, which takes time for exchanging the dies and causes a reduction in operating rate.

  The present invention has been made in view of the above problems, and its object is to eliminate the need for hole processing for passing a heater or a heat medium through the mold, and eliminate the wiring and piping of the mold. It is an object of the present invention to provide a mold clamping device having a temperature control function capable of reducing the manufacturing cost by reducing the die cost and shortening the non-operation time at the time of die replacement.

The present invention provides a mold clamping device having a temperature adjustment function described in each claim as a means for solving the above-mentioned problems.
The mold clamping device having a temperature control function is a movable platen (1) mounted with a fixed mold (3), which is one mold, and a movable mold (4), which is the other mold. A temperature control unit (5) is installed in each of the fixed and movable platens (1, 2), and each of the temperature control units is fixed to the fixed mold (3) or The temperature is controlled to a predetermined mold temperature by pressing against the movable mold (4).
This eliminates the need for drilling holes for passing a heater or heat medium through the mold, eliminates the wiring and piping of the mold, and reduces the mold cost.

Temperature control unit (5) is a heating means or cooling means (9) and temperature control block (8) having a temperature sensor (10), an actuator (6) for pressing the temperature control block to the mold Thus, the temperature of the mold can be appropriately controlled. The temperature control block (8) is obtained by forming a good material thermal conductivity, which makes it possible to heat transfer quickly and efficiently mold heat of the temperature control block.

Each of the solid Jooyobi movable platen (1), have a plurality of temperature control unit (5) is installed, the temperature control unit includes at least one temperature control block (8) Thus, by controlling the temperature of each temperature control unit individually, the ideal mold temperature distribution can be controlled. The temperature control unit (5), which provided an actuator insulation for protecting (6) from the heat of the temperature control block (8) (7), by which the actuator (8) is protected from the heat It is possible to prevent malfunction and the like.

Pressing the temperature control block to the mold (8) takes place on the actuator (6), in order to ensure the surface pressure constant, which is pressed via a spring (11), thereby, It is possible to prevent excessive surface pressure from being applied to the mold. Temperature control unit (5) is obtained by allowing an intermittent temperature control of the actuator temperature control block (8) during casting by the operation of (6) or pressed against the mold by or detach, which Thus, detailed temperature control during the casting cycle becomes possible.

Fixed platen (1) and the movable platen (2) and the stationary mold attached to the (3) and be replaced movable mold (4) to another mold, can be diverted temperature regulating unit (5) Thus, the temperature control unit is versatile and can be used for various molds, so it is economical. By providing the machining relief to the pushing surface to the mold temperature control block (8) (12), reducing the heat transfer to the mold, in which it possible to lower the partial temperature.

By providing a cavity (15) to the back surface of the mold cavity (14), locally increasing the temperature increment quantity due to heat from the molten metal during filling, the temperature control unit (5) by temperature control range of the This makes it possible to set the temperature distribution, and this makes it possible to set a temperature distribution that cannot be obtained with the capability of the temperature control block (8). Those temperature control unit (5) is a removable fixed and the movable platen (1), when installing the mold product shape differs greatly product which stipulates that can be exchanged for another temperature control unit Thus, the temperature control unit can be used as a mold for a plurality of products having similar product sizes and shapes.

  In addition, the code | symbol in the parenthesis attached | subjected to each said means is an example which shows the specific means as described in the Example mentioned later.

FIG. 1 is a view schematically showing a platen of a mold clamping device according to an embodiment of the present invention, a temperature control unit installed on the platen, and a mold. FIG. 2 is a diagram for explaining a process at the time of mold replacement, and shows a state in which the temperature control block of the temperature control unit is separated from the mold. FIG. 3 is also a diagram for explaining a process at the time of mold replacement, and shows a state in which the fixed mold and the movable mold are removed from the respective platens. FIG. 4 is a diagram illustrating the configuration of the temperature control unit. FIG. 5 is a diagram for explaining escape processing provided in the temperature control block of the temperature control unit. FIG. 6 is a diagram illustrating a cavity provided on the back surface of the cavity of the mold.

〔Example〕
Hereinafter, a mold clamping device according to an embodiment of the present invention when applied to a low-pressure casting machine according to the drawings will be described. FIG. 1 shows a platen of a mold clamping device of the present invention, a temperature control unit and a mold installed on the platen. That is, the platen of the mold clamping device is composed of the fixed platen 1 and the movable platen 2, and the mold is also composed of the fixed mold 3 and the movable mold 4. The fixed mold 3 is detachably mounted on the solid platen 1, and the movable mold 4 is detachably mounted on the movable platen 2.

  A temperature control unit 5 is detachably installed on each of the fixed platen 1 and the movable platen 2. In FIG. 2, one temperature control unit 5 is provided on each of the left and right sides of the fixed mold 3 and the movable mold 4. A temperature control unit 5 can be provided. In addition, a plurality of temperature control units 5 can be provided on one side surface of the molds 3 and 4 without being limited to one temperature control unit 5.

  As shown in FIG. 4, the temperature control unit 5 includes a temperature control block 8 provided with heating means and / or cooling means 9 and a temperature sensor 10, and the temperature control block 8 as a fixed mold 3 and / or movable. An actuator 6 made of an air cylinder, a hydraulic cylinder or the like for pressing against the mold 4 is formed. Therefore, by operating the actuator 6, the temperature control block 8 can be pressed against the molds 3, 4 or separated therefrom. The temperature control block 8 is formed of a material having good (large) thermal conductivity such as copper, copper alloy, aluminum, aluminum alloy or the like so that heat can be transferred to the molds 3 and 4 quickly.

  The temperature control unit 5 is provided with a heat insulating material 7 between the actuator 6 and the temperature control block 8 in order to protect the actuator 6 from the heat of the temperature control block 8. Further, the temperature control unit 5 is configured to press the temperature control block 8 through a spring 11 in order to ensure a constant surface pressure when the actuator 6 is pressed against the molds 3 and 4.

The heating means and / or the cooling means 9 of the temperature control block 8 is a temperature control pipe such as a heater wire or a heating pipe for supplying a heat medium or a cooling pipe for supplying a cooling medium, and these are embedded in the temperature control block 8. ing.
In each temperature control unit 8, the actuator 6 and the temperature control block 8 do not necessarily correspond one-to-one, and even if two temperature control blocks 8 are provided for one actuator 6 as shown in FIG. 4. It is also possible to provide more temperature control blocks 8. In this case, not only a plurality of temperature control blocks 8 may be provided in the vertical direction, but a plurality of temperature control blocks 8 may be provided in the horizontal direction (front and back direction of the paper surface).

Thus, the temperature sensor 10 and the heating means and / or the cooling means 9 installed in each temperature control block 8 individually control the temperature of each temperature control block 8 (temperature adjustment), thereby increasing the temperature of the whole. The temperature is controlled to a predetermined (ideal) mold temperature before casting according to the product by setting a temperature distribution or the like. During casting, in order to dissipate heat received from the molten metal, the heater 9 as the heating means 9 is turned off. If necessary, before the next casting, the molds 3 and 4 are cooled by a temperature control block 8 provided with a temperature control pipe for supplying a cooling medium as a cooling means 9 instead of a heater. Is controlled to have the same mold temperature as the original. During casting, control such as local heating or cooling is possible as required.
Moreover, since the temperature control block 8 can be moved back and forth by the actuator 6, it can be intermittently controlled by pressing it against the molds 3 and 4 during casting or by separating them.

  Mold exchange is performed in the process as shown in FIGS. As shown in FIG. 2, the actuator 6 of the temperature control unit 5 is operated to separate the temperature control block 8 from the molds 3 and 4. Next, the molds 3 and 4 can be removed from the platens 1 and 2 simply by releasing the mold clamp (not shown) as shown in FIG. That is, the fixed mold 3 is removed from the fixed platen 1 and the movable mold 4 is removed from the movable platen 2.

  In this mold exchanging operation, in the present invention, the heaters that are the heating means and / or the cooling means 9 and the cooling medium or the temperature control pipe for the heating medium are not provided in the molds 3 and 4. The mold can be exchanged without connecting a temperature control tube or the like.

  Further, in the present invention, as shown in FIG. 5, a relief process 12 is applied to the temperature control block 8, thereby suppressing heat transfer from the temperature control block 8 to the molds 3 and 4, and a region where the temperature is locally different. Can be made. That is, a relief process 12 that is recessed in a concave shape is applied to the surface 8 a that contacts the part 13 of the mold of the temperature control block 8. In the present invention, the temperature control function (maximum temperature, temperature distribution, etc.) is inferior to the case where the temperature control means is installed inside the mold by pressing the temperature control block 8 against the mold from the outside. By applying the relief process 12 to the adjustment block 8, heat transfer from the temperature adjustment block 8 to the molds 3 and 4 can be suppressed, and a region where the temperature is locally different can be created.

  Further, in the present invention, as shown in FIG. 6, by providing a cavity 15 on the back side of the cavity 14 of the molds 3 and 4, the amount of temperature rise due to heat received from the molten metal being filled is locally increased. It becomes possible to set a temperature distribution that cannot be obtained by the ability of the temperature control block 8.

As described above, according to the mold clamping device of the present invention, the mold temperature is suppressed by the temperature control unit 5 installed on the platens 1 and 2, thereby providing the molds 3 and 4 with a heater, a cooling medium, or a heat medium. Hole processing for passing through is unnecessary, and the wiring and piping of the mold can be eliminated. For this reason, it is possible to reduce the manufacturing cost by reducing the die cost and shortening the non-operation time at the time of die replacement.
In the present invention, the temperature control block 8 is operated by the actuator 6 to enable detailed temperature control during the casting cycle. The temperature control block 8 is subjected to relief processing 12 or the back of the mold cavity 14. A temperature distribution that cannot be obtained by the temperature control block 8 can be set by installing the cavity 15 in the temperature control block 8.

  In the above description of the present invention, a low-pressure casting machine has been described as an example, but it goes without saying that the mold clamping apparatus of the present invention can also be applied to a resin material molding apparatus.

DESCRIPTION OF SYMBOLS 1 Fixed platen 2 Movable platen 3 Fixed metal mold 4 Movable metal mold 5 Temperature control unit 6 Actuator 7 Heat insulating material 8 Temperature control block 9 Heating means and / or cooling means 10 Temperature sensor 11 Spring 12 Escape process 14 Cavity 15 Cavity

Claims (5)

A stationary platen (1) on which a stationary mold (3) which is one of the molds is detachably mounted;
A movable platen (2) to which a movable mold (4) which is the other of the molds is detachably mounted;
A mold clamping device comprising:
Each of the fixed platen (1) and the movable platen (2) is provided with a temperature control unit (5),
A temperature control function characterized by controlling the temperature control unit (5) to a predetermined mold temperature by pressing the temperature control unit (5) against the fixed mold (3) or the movable mold (4) , respectively.
The temperature control unit (5) has a temperature control block (8) having heating means or cooling means (9) and a temperature sensor (10), and presses the temperature control block (8) against the mold. Actuator (6) and
The temperature control unit (5) is capable of intermittent temperature control by pressing or separating the temperature control block (8) from the mold during casting by the operation of the actuator (6). A mold clamping device characterized by that. A stationary platen (1) on which a stationary mold (3) which is one of the molds is detachably mounted;
A movable platen (2) to which a movable mold (4) which is the other of the molds is detachably mounted;
A mold clamping device comprising:
Each of the fixed platen (1) and the movable platen (2) is provided with a temperature control unit (5),
A temperature control function characterized by controlling the temperature control unit (5) to a predetermined mold temperature by pressing the temperature control unit (5) against the fixed mold (3) or the movable mold (4) , respectively.
The temperature control unit (5) has a temperature control block (8) having heating means or cooling means (9) and a temperature sensor (10), and presses the temperature control block (8) against the mold. Actuator (6) and
The heating means or the cooling means (9) is a heating means, and heat transfer to the mold is provided by providing a relief process (12) on the pressing surface of the temperature control block (8) to the mold. A mold clamping device characterized in that it is possible to suppress the temperature and partially lower the temperature. A stationary platen (1) on which a stationary mold (3) which is one of the molds is detachably mounted;
A movable platen (2) to which a movable mold (4) which is the other of the molds is detachably mounted;
A mold clamping device comprising:
Each of the fixed platen (1) and the movable platen (2) is provided with a temperature control unit (5),
A temperature control function characterized by controlling the temperature control unit (5) to a predetermined mold temperature by pressing the temperature control unit (5) against the fixed mold (3) or the movable mold (4) , respectively.
The temperature control unit (5) has a temperature control block (8) having heating means or cooling means (9) and a temperature sensor (10), and presses the temperature control block (8) against the mold. Actuator (6) and
It said mold, by providing a cavity (15) on the rear surface of the cavity (14), clamping device according to claim locally to increase the temperature increment quantity due to heat from the molten metal during filling.   Each of the fixed platen (1) and the movable platen (2) is provided with a plurality of temperature control units (5), and the temperature control unit (5) includes at least one temperature control block. The mold clamping device according to claim 1, further comprising (8).   Even if the fixed mold (3) and the movable mold (4) mounted on the fixed platen (1) and the movable platen (2) are replaced with different molds, the temperature control unit (5) The mold clamping device according to claim 1, wherein the mold clamping device can be used.

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