JP5722289B2 - Injection molding machine capable of selectively mounting heating cylinders - Google Patents

Description

  The present invention relates to an injection molding machine capable of appropriately selecting and mounting heating cylinders having different inner diameters.

  The injection molding machine is roughly composed of an injection device and a platen device. As is well known in the art, the injection device includes a heating cylinder and a screw provided in the heating cylinder so as to be driven in the rotational direction and the axial direction. On the other hand, a platen device is also well known in the art, and a fixed platen to which a fixed side die is attached, a movable platen to which a movable side die is attached, and a movable side die to the fixed side die For example, it comprises a toggle type mold clamping device that opens and closes. Accordingly, when the screw is rotated and the resin material is supplied to the heating cylinder by a predetermined amount, the resin material is melted by heat generated by friction / shearing action due to rotation of the screw, heat applied from the outer periphery of the heating cylinder, and the like. The screw is sent to the measuring chamber at the tip of the heating cylinder, and the screw is retracted to store a predetermined amount. The molten resin weighed in this way is injected and filled into the cavity of the mold that has been clamped by driving the screw in the axial direction, and when the movable mold is opened after cooling and solidification, molding of a predetermined shape is performed. Goods are obtained.

  By the way, the mold is manufactured for each molded product to be molded, and the shape and capacity of the cavity, the capacity of the runner, and the like are different for each mold. In addition, the type of resin is different for each molded product. Therefore, in order to obtain a molded product having a desired quality, it is necessary to appropriately adjust injection conditions such as injection pressure, injection speed, molten resin temperature, number of injection stages, screw position for each number of injection stages, and the like. In order to perform such adjustment, so-called molding conditions, it is necessary to change molding conditions repeatedly in an injection molding machine and repeat molding, which is a labor-intensive operation.

JP 2000-108176 A

  Patent Document 1 describes an injection molding machine that sets molding data by setting different types of data from molding condition data in a conventional injection molding machine. That is, in the injection molding machine described in Patent Document 1, instead of the screw position and screw speed, which are two pieces of data set in the conventional injection molding machine, the resin filling amount and the resin filling amount per unit time, respectively. Is set. In the first place, the screw position and the screw speed are data for adjusting the injection amount of the resin and the injection amount per unit time, and these vary depending on the inner diameter of the heating cylinder. This is because the sectional area of the heating cylinder changes. Then, in order to determine the molding conditions in the conventional injection molding machine, it is necessary to adjust the molding condition data in consideration of the sectional area of the heating cylinder. Even if the molding conditions are determined using a heating cylinder having a predetermined inner diameter, it is necessary to change these data if the molding cylinder is replaced with a heating cylinder having a different inner diameter. In the injection molding machine described in Patent Document 1, it is only necessary to set the resin filling amount and the resin filling amount per unit time as the molding condition data, and the controller determines the preset inner diameter or cross-sectional area of the heating cylinder. These data are converted to obtain the screw position and screw speed internally to control the injection molding machine. Therefore, the operator does not need to be aware of the cross-sectional area of the heating cylinder in determining the molding conditions, and it is not necessary to change the molding condition data even if the heating cylinders having different inner diameters are replaced.

  The injection molding machine described in Patent Document 1 is configured to set the resin filling amount and the resin filling amount per unit time as molding condition data. There is no need to be aware of the cross-sectional area, and once the molding conditions have been determined, it is not necessary to change the data even if the heating cylinder having a different inner diameter is replaced. Therefore, the molding conditions can be easily determined, which is excellent. However, there are some problems. Specifically, the operator has to operate in advance to set the inner diameter or cross-sectional area of the heating cylinder in the controller. If this setting is forgotten or wrong, the inner diameter and cross-sectional area will not be set correctly, and as a result, the resin filling amount and the resin filling amount per unit time may change, possibly damaging the injection device and mold. is there. This problem is likely to occur in the case of an injection molding machine in which heating cylinders having different inner diameters can be appropriately selected and attached. That is, there is a case where only the heating cylinder is replaced and the setting of the inner diameter and the cross-sectional area of the heating cylinder is forgotten.

  An object of the present invention is to provide an injection molding machine that solves the problems as described above. Specifically, in an injection molding machine that can appropriately select and mount heating cylinders having different inner diameters. It is an object of the present invention to provide an injection molding machine in which the operator does not need to set the inner diameter and cross-sectional area of the heating cylinder, and therefore there is no risk of damaging the injection device or the mold due to forgetting or incorrect setting. It is another object of the present invention to provide an injection molding machine that does not require an operator to change molding condition data when the heating cylinder is replaced after molding conditions are set.

  In order to achieve the above object, the present invention is directed to an injection molding machine capable of selectively mounting a heating cylinder having a different inner diameter and performing injection molding, and recognizes the type of the heating cylinder in the main body of the injection molding machine. A recognition means is provided. The controller of the injection molding machine is provided with a predetermined table, and the table stores the inner diameters or cross-sectional areas of a plurality of types of heating cylinders that can be mounted. When the type of the heating cylinder mounted by the identification means is recognized, the inner diameter or cross-sectional area of the corresponding heating cylinder is read from this table and set in the controller. Further, the molding conditions that have already been set are automatically converted according to the set inner diameter or cross-sectional area.

Thus, in order to achieve the above object, the invention according to claim 1 is an injection molding machine capable of selectively mounting a heating cylinder having a different inner diameter to perform injection molding. A table storing inner diameters or cross-sectional areas of a plurality of types of heating cylinders that can be mounted is provided, and a main body of an injection molding machine to which the heating cylinders are mounted is provided with predetermined identification means, and the heating cylinders are mounted Then, the type of the heating cylinder is identified by the identification means, the corresponding inner diameter or cross-sectional area is read from the table and set in the controller, the injection molding machine, The identification means comprises a bolt detection sensor, which is used for fixing the heating cylinder defined in the main body. The bolt holes for fixing the heating cylinder provided in some of the bolt holes and open to the heating cylinder are different in arrangement and number depending on the type of the heating cylinder, and when the heating cylinder is mounted on the main body The type of the heating cylinder is identified based on the presence or absence of a bolt detected by the bolt detection sensor.
The invention according to claim 2 is an injection molding machine capable of selectively performing injection molding by selectively mounting heating cylinders having different inner diameters, and the controller of the injection molding machine includes a plurality of types of heating cylinders that can be mounted. A table storing an inner diameter or a cross-sectional area is provided, and a main body of an injection molding machine to which the heating cylinder is attached is provided with a predetermined identification unit. When the heating cylinder is attached, the identification unit performs the heating. A cylinder type is identified, a corresponding inner diameter or cross-sectional area is read from the table, and is set in the controller. The identification means includes a plurality of contact detection sensors. The contact detection sensor is provided on a mounting surface of the main body on which the heating cylinder is mounted. The shape of the portion that contacts the surface differs depending on the type of the heating cylinder, and the type of the heating cylinder is identified based on the presence or absence of contact detected by the contact detection sensor. Is done.
According to a third aspect of the present invention, there is provided an injection molding machine capable of selectively carrying out injection molding by mounting heating cylinders having different inner diameters, and a plurality of types of heating cylinders that can be attached to the controller of the injection molding machine. A table storing an inner diameter or a cross-sectional area is provided, and a main body of an injection molding machine to which the heating cylinder is attached is provided with a predetermined identification unit. When the heating cylinder is attached, the identification unit performs the heating. An injection molding machine in which the type of cylinder is identified, the corresponding inner diameter or cross-sectional area is read from the table and set in the controller, and a plurality of sheets wound around the heating cylinder The heater is connected to a power supply unit provided in the main body via a predetermined socket, and the socket is a type of heating cylinder. The identification means comprises a sensor provided in the power supply unit, and the type of the heating cylinder is identified based on the shape or number of the socket detected by the sensor. It is comprised as an injection molding machine characterized by the above.
According to a fourth aspect of the present invention, there is provided an injection molding machine capable of selectively carrying out injection molding by selectively mounting heating cylinders having different inner diameters, and the controller of the injection molding machine includes a plurality of types of heating cylinders that can be mounted. A table storing an inner diameter or a cross-sectional area is provided, and a main body of an injection molding machine to which the heating cylinder is attached is provided with a predetermined identification unit. When the heating cylinder is attached, the identification unit performs the heating. An injection molding machine in which the type of cylinder is identified, the corresponding inner diameter or cross-sectional area is read from the table and set in the controller, and a plurality of sheets wound around the heating cylinder The heater is supplied with power from a power supply unit provided in the main body, and the identification means is provided in the power supply unit. And consists ammeter is configured as an injection molding machine type of the heating cylinder on the basis of the current of each heater measured by said current meter, characterized in that it is identified.
The invention according to claim 5 is an injection molding machine in which a heating cylinder having a different inner diameter can be selectively mounted and injection molding is performed. A table storing an inner diameter or a cross-sectional area is provided, and a main body of an injection molding machine to which the heating cylinder is attached is provided with a predetermined identification unit. When the heating cylinder is attached, the identification unit performs the heating. An injection molding machine in which the type of cylinder is identified, the corresponding inner diameter or cross-sectional area is read from the table and set in the controller, and a plurality of cylinders provided in the heating cylinder The thermocouple is connected to a temperature measurement unit provided in the main body, and the identification means includes the temperature measurement unit. The number of thermocouples connected to the section, the type or based upon the connection state, is configured as an injection molding machine type of the heating cylinder is characterized in that it is identified.

According to a sixth aspect of the present invention, in the injection molding machine according to any one of the first to fifth aspects, the inner diameter or the cross-sectional area of the heating cylinder is selected from among a plurality of molding conditions set in the controller. The dependent molding conditions are configured as an injection molding machine which is automatically converted when the heating cylinder is mounted and the inner diameter or cross-sectional area is set in the controller. The

  As described above, according to the present invention, in an injection molding machine that can selectively perform injection molding by mounting heating cylinders having different inner diameters, the controller of the injection molding machine relates to a plurality of types of heating cylinders that can be mounted. A table storing the inner diameter or cross-sectional area is provided, and the body of the injection molding machine to which the heating cylinder is attached is provided with a predetermined identification means. When the heating cylinder is mounted, the type of the heating cylinder is recognized by the identification means. The corresponding inner diameter or cross-sectional area is read from the table and set in the controller. Therefore, it is not necessary for the operator to set the inner diameter and cross-sectional area of the heating cylinder, and it is automatically set in the controller. That way, no effort is required and there is no risk of forgetting to set. And since the injection molding machine is not operated by incorrect setting, there is no fear of damaging the injection device or the mold. According to another invention, among the plurality of molding conditions set in the controller, the molding condition that depends on the inner diameter or the cross-sectional area of the heating cylinder is set to the inner diameter or the cross-sectional area in the controller. If it is done, it will be automatically converted, so if the specified heating cylinder is installed and the molding conditions have been set, the molding can be performed even if the heating cylinder is replaced with another type. Since the conditions are automatically converted, there is an effect that it is not necessary to set the molding conditions again.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows typically the injection molding machine which concerns on embodiment of this invention, The (a) is a cross-sectional front view, The (a) is sectional drawing which expands a part. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows a part of injection molding machine which concerns on the 1st Embodiment of this invention, The (a) is a heating cylinder attachment part of the main body of an injection molding machine, The (a)-(d) is a kind. It is the side view which looked at the attachment part of each different heating cylinder from the direction of the injection nozzle, respectively. It is a figure which shows a part of injection molding machine which concerns on the 2nd Embodiment of this invention, The (a) is a heating cylinder attachment part of the main body of an injection molding machine, The (a)-(d) is a kind. It is the side view which looked at the attachment part of each different heating cylinder from the direction of the injection nozzle, respectively. It is a figure which shows a part of injection molding machine which concerns on the 3rd Embodiment of this invention, The (a)-(c) is each heating cylinder from which a kind differs, The heater wound around the heating cylinder, It is a front view which shows typically the electric power supply part which supplies electric power to a heater. It is a figure which shows a part of injection molding machine which concerns on the 4th Embodiment of this invention, The (a)-(c) is each a heating cylinder from which a kind differs, The heater wound around the heating cylinder, It is a front view which shows typically the electric power supply part which supplies electric power to a heater. It is a figure which shows a part of injection molding machine which concerns on the 5th Embodiment of this invention, The (a)-(c) is from each heating cylinder from which a kind differs, and the thermocouple provided in the heating cylinder. It is a front view which shows typically the temperature sensor which becomes, and the temperature measurement part to which this thermocouple is connected.

  Embodiments of the present invention will be described below. The injection molding machine 1 according to the present embodiment is also configured as conventionally known, and includes an injection device 2, a platen device, a controller for controlling these devices, and the like. In FIG. 1A, only a part of the injection device 2 is shown. The injection device 2 includes a heating cylinder 4, a screw 6 that can be driven in the rotation direction and the axial direction in the heating cylinder 4, and an injection device main body 7 to which the heating cylinder 4 is mounted. Yes. The injection apparatus body 7 also includes a drive unit that drives the screw 6, but only a part of the casing of the injection apparatus body 7 is shown in FIG. 1. The present invention is directed to an injection molding machine capable of selectively mounting a plurality of types of heating cylinders having different inner diameters. In the first embodiment, the mounting portion between the injection device main body 7 and the heating cylinder 4 is characterized. This will be described in detail later. Also in the present embodiment, an injection nozzle 8 is provided at the tip of the heating cylinder 4. A plurality of band heaters 10, 10,... Are wound around the outer peripheral surfaces of the heating cylinder 4 and the injection nozzle 8 so that the heating cylinder 4 and the injection nozzle 8 can be heated.

  In the present embodiment, various types of mold clamping devices can be adopted as the mold platen device, and for example, a toggle type mold clamping device can be adopted. Although the toggle type mold clamping device is well known, it will not be described, but the mold can be opened and closed and clamped by a toggle mechanism. Also in the present embodiment, the injection device 2, the mold clamping device, and other devices are connected to a controller, and each of these devices can be controlled from the controller.

  The attachment part of the injection apparatus main body 7 and the heating cylinder 4 in 1st Embodiment is demonstrated. The injection device main body 7 and the heating cylinder 4 are fixed by bolts 12, 12,... As shown in FIGS. 4, a predetermined flange portion is formed, and a bolt hole into which the bolts 12, 12,... Are inserted is formed in the flange portion. However, the bolt hole opened in the flange portion of the injection apparatus main body 7 is formed with a female screw so that the bolt 12 is screwed, whereas the bolt hole on the heating cylinder 4 side has a female screw. Not formed. The bolt hole on the injection device main body 7 side penetrates, and when the bolt 12 is tightened, the tip of the bolt 12 protrudes to the back side by a predetermined length.

  A state in which the mounting portion of the injection device main body 7 is viewed from the injection nozzle 8 is shown in FIG. The injection device main body 7 has an opening 13 into which the rear end portion of the screw 6 is inserted. The first to tenth bolt holes 14a, 14b,... Concentrically with the opening 13 and at equal intervals. 14j is open. Among these bolt holes 14a, 14b,..., 14j, the fourth bolt hole 14d and the seventh bolt hole 14g have a bolt detection on the back side as shown in FIG. Sensors 16 and 16 are provided. In the present embodiment, the bolt detection sensors 16 and 16 are constituted by limit switches, and when the bolt 12 is screwed into the bolt hole, the bolt tip pushes the limit switch and the bolt 12 is detected. . The bolt detection sensor 16 may be constituted by an optical sensor or another sensor instead of the limit switch. The bolt detection sensors 16 and 16 are connected to the controller so that the controller is notified of the presence or absence of the bolts 12 and 12 in the fourth bolt hole 14d and the seventh bolt hole 14g. As will be described later, the type of the heating cylinder 4 can be identified by the presence or absence of the bolts 12 and 12, and the bolt detection sensors 16 and 16 serve as identification means in the first embodiment.

  2 (a) to 2 (d) show how the attachment portions of the three types of heating cylinders having different inner diameters, that is, the first to third heating cylinders 4A1, 4A2, and 4A3, are viewed from the injection nozzle 8. FIG. Has been. As shown in FIG. 2A, ten bolt holes 18, 18,... Are opened in the first heating cylinder 4A1. These are aligned with the first to tenth bolt holes 14a, 14b,..., 14j of the injection apparatus body 7, and the bolts 12, 12,. On the other hand, as shown in FIG. 2C, only nine bolt holes 18, 18,... Are opened in the second heating cylinder 4A2. That is, the position corresponding to the fourth bolt hole 14d of the injection device main body 7 is closed. Further, as shown in FIG. 2D, nine bolt holes 18, 18,... Are opened in the third heating cylinder 4A3, but the seventh bolt of the injection device main body 7 is opened. The position corresponding to the hole 14g is closed.

In the present embodiment, the controller is provided with a predetermined table in the internal storage area, and the following data is written for the type of heating cylinder that can be mounted. In the present embodiment, at least the first to third heating cylinders 4A1, 4A2, 4A3 are written.
○ Heating cylinder type Heating cylinder model number and type data ○ Heating cylinder inner diameter or cross-sectional area Heating cylinder inner diameter or cylinder cross-sectional area

  In the injection molding machine 1 according to the present embodiment, when the first heating cylinder 4A1 is mounted, the bolts 12, 12,... Are screwed into the first to tenth bolt holes 14a, 14b,. It will be. Accordingly, the bolt detection sensors 16, 16 provided in the fourth and seventh bolt holes 14d, 14g both detect the bolts 12, 12, and notify the controller. The controller recognizes that the first heating cylinder 4A1 is mounted, reads the inner diameter or the cross-sectional area of the first heating cylinder 4A1 from the table, and writes it in a predetermined storage area as internal control data. That is, the inner diameter or cross-sectional area is set. When the second heating cylinder 4A2 is mounted instead of the first heating cylinder 4A1, the bolt detection sensor 16 in the fourth bolt hole 14d does not detect the bolt 12, and the bolt detection sensor in the seventh bolt hole 14g. 16 detects the bolt 12. Then, the controller recognizes that the second heating cylinder 4A2 is mounted. Similarly, when the third heating cylinder 4A3 is mounted, the bolt detection sensor 16 in the fourth bolt hole 14d detects the bolt 12, but the bolt detection sensor 16 in the seventh bolt hole 14g does not detect the bolt 12. . Then, the controller recognizes that the third heating cylinder 4A3 is attached. The corresponding inner diameter or cross-sectional area is read from the table according to the recognized type of the heating cylinder, and is written in a predetermined storage area as control data. If the molding conditions are already set in the controller, the controller automatically converts the molding conditions depending on the inner diameter or the sectional area when the inner diameter or the sectional area of the heating cylinder is changed by replacing the heating cylinder. The molding conditions that are automatically converted are the screw position, screw speed, injection pressure, and the like, and the molding conditions such as the pressure holding time and the resin temperature are not changed because they do not depend on the inner diameter or the cross-sectional area of the heating cylinder. Such conversion eliminates the need for the operator to perform molding condition determination again, and ensures that a molded product having substantially the same quality can be molded even after the heating cylinder is replaced.

  An injection molding machine 1B according to the second embodiment will be described. Also in this embodiment, the heating cylinder 4 can be selectively mounted from the first to third heating cylinders 4B1, 4B2, and 4B3 shown in FIGS. These first to third heating cylinders 4B1, 4B2, 4B3 are different from the previous embodiment in that the number of bolt holes 18, 18,... Is the same as the number of bolt holes 14, 14,. Is the same as the number of However, the shape of the attachment part attached to the injection device main body 7 is different. Specifically, the mounting portion of the second heating cylinder 4B2 has a shape in which the upper left portion 21 of the mounting portion of the first heating cylinder 4B1 is cut off, and the mounting portion of the third heating cylinder 4B3 is The upper right portion 22 of the mounting portion of the first heating cylinder 4B1 is cut off. The first to third heating cylinders 4B1, 4B2, and 4B3 are identified by the difference in shape. Sensors for detecting a difference in the shape of these mounting portions, that is, contact detection sensors 23 and 23 are provided on the mounting surface of the injection device main body 7 to which the heating cylinder 4 is mounted. When the first heating cylinder 4B1 is mounted, the left and right contact detection sensors 23, 23 detect contact, and when the second heating cylinder 4B2 is mounted, only the right contact detection sensor 23 detects contact, When the third heating cylinder 4B3 is mounted, only the left contact detection sensor 23 detects contact. As a result, the controller can recognize which heating cylinder 4B1, 4B2, 4B3 is mounted. That is, the contact detection sensors 23 and 23 are identification means. As in the injection molding machine 1 according to the previous embodiment, the controller reads the inner diameter or cross-sectional area of the corresponding heating cylinder from the table and copies it to the internal control storage area. Moreover, the molding conditions depending on the inner diameter or the cross-sectional area of the heating cylinder are converted among the molding conditions.

  An injection molding machine 1C according to a third embodiment will be described. Also in this embodiment, the heating cylinder 4 can be selectively mounted from the first to third heating cylinders 4C1, 4C2, and 4C3 shown in FIGS. Also in this embodiment, the band heaters 10, 10,... Are supplied with power from the power supply unit 25 provided in the injection device body 7. The sockets 26a, 26b, and 26c are connected to each other, and power is supplied to the band heaters 10, 10,... Via the sockets 26a, 26b, and 26c. The band heaters 10, 10,... Wound around the first to third heating cylinders 4 C 1, 4 C 2, 4 C 3 are different in type or number and are connected to the wiring of these band heaters 10, 10,. The sockets 26a, 26b and 26c have different shapes. That is, by identifying the shapes of the sockets 26a, 26b, and 26c, it is possible to identify which type of heating cylinders 4C1, 4C2, and 4C3 are mounted. In the present embodiment, the power supply unit 25 is provided with a sensor for recognizing the shapes of the sockets 26a, 26b, and 26c, and this sensor serves as an identification unit. When the type of the heating cylinders 4C1, 4C2, 4C3 is identified by the identification means, the controller reads the inner diameter or cross-sectional area of the corresponding heating cylinder from the table as in the first embodiment, and stores the internal control storage area. To copy. Moreover, the molding conditions depending on the inner diameter or the cross-sectional area of the heating cylinder are converted among the molding conditions.

  An injection molding machine 1D according to a fourth embodiment will be described. Also in this embodiment, the heating cylinder 4 can be selectively mounted from the first to third heating cylinders 4D1, 4D2, and 4D3 shown in FIGS. The types of the heating cylinders 4D1, 4D2, 4D3 are identified by detecting a difference in current flowing through the band heaters 10, 10,. That is, the power supply unit 25 provided in the injection device main value 7 is provided with an ammeter, which is an identification means. That is, each channel CH1, CH2,... That supplies power from the power supply unit 25 is provided with an ammeter, and the currents flowing through these channels CH1, CH2,. It is possible to identify which of the heating cylinders 4D1, 4D2, 4D3 is mounted. When the types of the heating cylinders 4D1, 4D2, and 4D3 are identified, the controller reads the inner diameter or cross-sectional area of the corresponding heating cylinder from the table and copies it to the internal control storage area, as in the first embodiment. . Moreover, the molding conditions depending on the inner diameter or the cross-sectional area of the heating cylinder are converted among the molding conditions.

  An injection molding machine 1E according to the fifth embodiment will be described. Also in this embodiment, the heating cylinder 4 can be selectively mounted from the first to third heating cylinders 4E1, 4E2, 4E3 shown in FIGS. Also in this embodiment, as in the conventional injection molding machine, the heating cylinder is provided with a plurality of temperature sensors, that is, thermocouples. These thermocouples are connected to a temperature measurement unit 28 provided in the injection apparatus main body 7. In this embodiment, each thermocouple is connected to connectors 28 a, 28 b and 28 c, and these connectors 28 a, 28 b and 28 c are connected to the temperature measuring unit 28. The temperature measuring unit 28 is provided with a plurality of channels CH1, CH2,... And detects the voltage difference between the connected thermocouples to measure the temperature. It is also possible to detect so-called burnout, which detects that is disconnected. The first to third heating cylinders 4E1, 4E2, 4E3 differ in the number and type of thermocouples provided, and the patterns of the channels CH1, CH2,... Connected in the temperature measuring unit 28 are different. That is, if the connection pattern to the channels CH1, CH2,... Is known, the heating cylinder can be identified. In this embodiment, burnout detection is used to identify the connection pattern to the channels CH1, CH2,..., Thereby identifying the first to third heating cylinders 4E1, 4E2, 4E3. Yes. The connectors 28a, 28b, and 28c have been described as being connected to a plurality of thermocouples, but one connector may be connected to one thermocouple. In this case, the connectors that can be connected to each of the channels CH1, CH2,... Are limited to a specific type so that the shape of the connector is unique. Then, a thermocouple connection error can be prevented. The type of the heating cylinders 4E1, 4E2, 4E3 can be identified from the pattern of the thermocouple connection to the channels CH1, CH2,. As in the first embodiment, the controller reads the inner diameter or cross-sectional area of the corresponding heating cylinder from the table and copies it to the internal storage area for control. Moreover, the molding conditions depending on the inner diameter or the cross-sectional area of the heating cylinder are converted among the molding conditions.

DESCRIPTION OF SYMBOLS 1 Injection molding machine 2 Injection apparatus 4 Heating cylinder 6 Screw 7 Injection apparatus main body 10 Band heater 12 Bolt 14 Bolt hole 16 Bolt detection sensor 18 Bolt hole 23 Contact detection sensor 25 Power supply part 26 Socket 28 Temperature measurement part

Claims (6)

In an injection molding machine capable of selectively mounting heating cylinders having different inner diameters and performing injection molding, the controller of the injection molding machine stores inner diameters or cross-sectional areas of a plurality of types of heating cylinders that can be mounted. A table is provided, and a main body of an injection molding machine to which the heating cylinder is attached is provided with predetermined identification means. When the heating cylinder is mounted, the type of the heating cylinder is identified by the identification means, and the table An injection molding machine in which a corresponding inner diameter or cross-sectional area is read out and set in the controller,
The identification means comprises a bolt detection sensor, and the bolt detection sensor is provided in some of the bolt holes for fixing the heating cylinder opened in the main body.
The number of the bolt holes for fixing the heating cylinder provided in the heating cylinder differs depending on the type of the heating cylinder, and is detected by the bolt detection sensor when the heating cylinder is mounted on the main body. An injection molding machine characterized in that the type of heating cylinder is identified based on the presence or absence of a bolt. In an injection molding machine capable of selectively mounting heating cylinders having different inner diameters and performing injection molding, the controller of the injection molding machine stores inner diameters or cross-sectional areas of a plurality of types of heating cylinders that can be mounted. A table is provided, and a main body of an injection molding machine to which the heating cylinder is attached is provided with predetermined identification means. When the heating cylinder is mounted, the type of the heating cylinder is identified by the identification means, and the table An injection molding machine in which a corresponding inner diameter or cross-sectional area is read out and set in the controller,
The identification means includes a plurality of contact detection sensors, and the contact detection sensors are provided on a mounting surface on which the heating cylinder of the main body is mounted,
The shape of the portion of the heating cylinder that contacts the mounting surface differs depending on the type of the heating cylinder, and the type of the heating cylinder is identified based on the presence or absence of contact detected by the contact detection sensor. And injection molding machine. In an injection molding machine capable of selectively mounting heating cylinders having different inner diameters and performing injection molding, the controller of the injection molding machine stores inner diameters or cross-sectional areas of a plurality of types of heating cylinders that can be mounted. A table is provided, and a main body of an injection molding machine to which the heating cylinder is attached is provided with predetermined identification means. When the heating cylinder is mounted, the type of the heating cylinder is identified by the identification means, and the table An injection molding machine in which a corresponding inner diameter or cross-sectional area is read out and set in the controller,
The plurality of heaters wound around the heating cylinder are connected to a power supply unit provided in the main body via a predetermined socket, and the shape or number of the sockets differs depending on the type of the heating cylinder. ,
The injection molding machine according to claim 1, wherein the identification means comprises a sensor provided in the power supply unit, and the type of the heating cylinder is identified based on the shape or number of the sockets detected by the sensor. In an injection molding machine capable of selectively mounting heating cylinders having different inner diameters and performing injection molding, the controller of the injection molding machine stores inner diameters or cross-sectional areas of a plurality of types of heating cylinders that can be mounted. A table is provided, and a main body of an injection molding machine to which the heating cylinder is attached is provided with predetermined identification means. When the heating cylinder is mounted, the type of the heating cylinder is identified by the identification means, and the table An injection molding machine in which a corresponding inner diameter or cross-sectional area is read out and set in the controller,
The plurality of heaters wound around the heating cylinder are supplied with electric power from an electric power supply unit provided in the main body,
The injection molding machine according to claim 1, wherein the identification unit includes an ammeter provided in the power supply unit, and the type of the heating cylinder is identified based on a current of each heater measured by the ammeter. In an injection molding machine capable of selectively mounting heating cylinders having different inner diameters and performing injection molding, the controller of the injection molding machine stores inner diameters or cross-sectional areas of a plurality of types of heating cylinders that can be mounted. A table is provided, and a main body of an injection molding machine to which the heating cylinder is attached is provided with predetermined identification means. When the heating cylinder is mounted, the type of the heating cylinder is identified by the identification means, and the table An injection molding machine in which a corresponding inner diameter or cross-sectional area is read out and set in the controller,
A plurality of thermocouples provided in the heating cylinder are connected to a temperature measurement unit provided in the main body,
The said identification means consists of the said temperature measurement part, The type of a heating cylinder is identified based on the number, kind, or connection state of the thermocouple connected to the said measurement part, The injection molding machine characterized by the above-mentioned. 6. The injection molding machine according to claim 1, wherein among the plurality of molding conditions set in the controller, a molding condition depending on an inner diameter or a sectional area of a heating cylinder is the heating An injection molding machine characterized in that when a cylinder is mounted and an inner diameter or a sectional area is set in the controller, it is automatically converted.

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