TW201529269A - Injection molding machine and operation screen of injection molding machine - Google Patents

Abstract

This invention provides an injection molding machine with operation screen having excellent recognizability. The injection molding machine of this invention comprises: a movable part; a drive part for driving the movable part; a control device for controlling the driving part; and a display part for displaying an operation screen. The operation screen inputs setting values for controlling the driving part. The operation screen comprises a selection part for selecting the setting value from a plurality candidates set in advance.

Description

Injection molding machine and injection molding machine operation screen

The present invention relates to an operation screen of an injection molding machine and an injection molding machine.

The injection molding machine includes: a movable portion; a driving portion that drives the movable portion; a control device that controls the driving portion; and a display portion that displays an operation screen, and the operation screen inputs a setting value for controlling the driving portion (for example, See Patent Document 1).

(previous technical literature) (Patent Literature)

Patent Document 1: Japanese Laid-Open Patent Publication No. 2005-199593

There is room for improvement in the visibility of the operation screen.

The present invention has been made in view of the above problems, and an object thereof is to provide an injection molding machine excellent in visibility of an operation screen.

In order to solve the above problems, according to an aspect of the present invention, an injection molding machine is provided, wherein the injection molding machine includes: a movable portion; a driving portion that drives the movable portion; and a control device that controls the driving portion; and a display portion. The operation screen is displayed, and the operation screen inputs a setting value for controlling the driving unit, and the operation screen has a selection unit that selects a control amount of the setting value from among a plurality of predetermined candidate objects.

According to an aspect of the invention, an injection molding machine excellent in visibility of an operation screen is provided.

10‧‧‧Molding device

12‧‧‧Fixed platen

13‧‧‧ movable platen

18‧‧‧Molding force sensor

26‧‧‧Molded motor

26a‧‧‧Encoder

30‧‧‧Molding device

32‧‧‧Fixed mode

33‧‧‧ movable mold

50‧‧‧Injection device

71‧‧‧Operation Department

72‧‧‧Display Department

80‧‧‧Control device

81‧‧‧Storage Department

82‧‧‧CPU

90‧‧‧ operation screen

91‧‧‧Selection Department

92‧‧‧Set value input section

95‧‧‧Reading Department

96, 97‧‧‧ actual value display

Fig. 1 is a view showing a state at the time of completion of mold opening of the injection molding machine according to the embodiment of the present invention.

Fig. 2 is a view showing an operation screen of the injection molding machine according to the embodiment of the present invention.

Fig. 3 is a view showing a mold apparatus according to a first modification.

Hereinafter, embodiments for carrying out the invention will be described with reference to the accompanying drawings. In the respective drawings, the same or corresponding components are denoted by the same or corresponding elements, and the description thereof is omitted.

Fig. 1 is a view showing a state at the time of completion of mold opening of the injection molding machine according to the embodiment of the present invention. In the first drawing, the mold device 30 and the fixed platen 12 are partially broken and shown. For example, as shown in Fig. 1, the injection molding machine includes a mold clamping device 10, an injection device 50, an operation unit 71, a display unit 72, and a control device 80.

The mold clamping device 10 performs a mold closing process, a mold clamping process, and a mold opening process. The mold closing process is a process of closing the mold device 30, the mold clamping process is a process of fastening the mold device 30, and the mold opening process is a process of opening the mold device 30.

The mold device 30 includes a fixed mold 32 and a movable mold 33. The movable mold 33 has a mold main body portion 33a, a frame portion 33b, and a spring portion 33c. The frame portion 33b surrounds the convex portion of the mold main body portion 33a, and is coupled to the mold main body portion 33a by the spring portion 33c. In the mold closing process, the frame portion 33b of the movable mold 33 is pressed by the fixed mold 32, and the spring portion 33c of the movable mold 33 is contracted. The mold main body portion 33a of the movable mold 33 is advanced to a predetermined position, and a cavity space is formed between the movable mold 33 and the fixed mold 32. Further, the fixed mold 32 may have a mold main body portion, a frame portion, and a spring portion similarly to the movable mold 33.

The injection device 50 fills the cavity space of the mold device 30 with a liquid molding material. The filled molding material is cured into a molded article. For example, a resin is used as a molding material.

The operation unit 71 receives an input operation of the user and outputs it to the control device 80. The operation signal corresponding to the user's input operation. The operation unit 71 is constituted by, for example, an operation panel including a numeric key, a cursor key, an execution key, and the like. Further, the operation unit 71 may be constituted by a keyboard, a mouse, or the like. Further, the operation unit 71 may be plural.

The display unit 72 displays various operation screens under the control of the control device 80. The user performs setting of the mold clamping device 10, the injection device 50, and the like by operating the operation unit 71 while observing the operation screen displayed on the display unit 72.

Further, in the present embodiment, the operation unit 71 is provided separately from the display unit 72, but may be integrated or may be constituted by a touch panel.

The control device 80 includes a storage unit 81 such as a memory and a CPU (Central Processing Unit) 82, and controls the mold clamping device 10, the injection device 50, and the display unit 72 by causing the CPU 82 to execute a control program stored in the storage unit 81. Further, the control device for the mold clamping device 10 and the injection device 50 and the control device for the display unit 72 may be separately provided and connected by a communication line. The communication line can be any of a wired line and a wireless line.

For example, as shown in Fig. 1, the mold clamping device 10 includes a frame 11, a fixed platen 12, a movable platen 13, a rear platen 15, a tie rod 16, a toggle mechanism 20, and a mold clamping motor 26. Hereinafter, the moving direction of the movable platen 13 at the time of closing the mold (the right direction in the first drawing) will be referred to as the front side, and the moving direction of the movable mold 13 at the time of the mold opening (the leftward direction in the first drawing) will be described as the rear.

The fixed platen 12 is fixed relative to the frame 11. A fixed die 32 is attached to a surface of the fixed platen 12 opposite to the movable platen 13.

The movable platen 13 is a movable portion that is freely movable along a guide (for example, a guide rail) 17 laid on the frame 11 and that is movable forward and backward with respect to the fixed platen 12. A movable mold 33 is attached to a surface of the movable platen 13 that faces the fixed platen 12.

The mold closing, the mold clamping, and the mold opening are performed by moving the movable platen 13 forward and backward with respect to the fixed platen 12.

The rear platen 15 is coupled to the fixed platen 12 by a plurality of (for example, four) tie bars 16, and is placed on the frame 11 in a retractable manner. In addition, the rear platen 15 can also be moved freely along the guides laid on the frame 11. The guide of the rear platen 15 may be shared with the guide 17 of the movable platen 13.

In addition, in the embodiment, the fixed platen 12 is fixed relative to the frame 11, and the rear platen 15 is retractable relative to the frame 11, but the rear platen 15 may be fixed relative to the frame 11, and the fixed platen 12 is fixed relative to the frame. 11 advance and retreat freely.

The tie rod 16 is set to be parallel to the mold opening and closing direction and extends in accordance with the mold clamping force. A mold clamping force sensor 18 is provided on at least one of the tie bars 16. The mold clamping force sensor 18 is, for example, a strain sensor that detects the actual value of the mold clamping force by detecting the strain of the tie rod 16 and outputs a signal indicating the actual value to the control device 80.

In addition, the mold clamping force sensor 18 is not limited to the strain sensor that detects the strain of the tie rod 16. For example, a force sensor can also be used as the mold clamping force sensor.

The toggle mechanism 20 is disposed between the movable platen 13 and the rear platen 15 and is attached to the movable platen 13 and the rear platen 15, respectively. Toggle mechanism 20 is stretched and contracted in the mold opening and closing direction, and the movable platen 13 advances and retracts relative to the rear platen 15.

The mold clamping motor 26 is a driving portion that drives the movable platen 13 by the toggle mechanism 20. Between the mold clamping motor 26 and the toggle mechanism 20, a ball screw mechanism as a motion converting portion that converts the rotational motion of the mold clamping motor 26 into a linear motion and transmits it to the toggle mechanism 20 is provided.

The mold clamping motor 26 has an encoder 26a. The encoder 26a detects the actual value of the rotation angle of the output shaft of the mold clamping motor 26, and outputs a signal indicating the actual value to the control device 80.

Further, as the driving portion of the movable platen 13, the mold clamping device 10 may have a hydraulic cylinder instead of the mold clamping motor 26. Further, the mold clamping device 10 may have a linear motor for opening and closing the mold and an electromagnet for mold clamping. When the mold clamping force is generated by the adsorption force of the electromagnet, a magnetic force sensor that detects the strength of the magnetic field around the electromagnet can be used as the mold clamping force sensor. Further, in the present embodiment, the mold clamping force equal to the product of the urging force and the toggle magnification based on the mold clamping motor 26 is generated. However, the toggle mechanism 20 may not be provided, and the urging force based on the mold clamping motor 26 may not be used. The increase is directly transmitted to the movable platen 13.

In a state where the mold opening is completed (see Fig. 1), the control device 80 controls the mold clamping motor 26 to advance the movable platen 13. Thereby, the frame-like portion 33b of the movable mold 33 is pressed by the movable mold 32, and the spring portion 33c of the movable mold 33 is contracted. The mold main body portion 33a of the movable mold 33 is advanced to a predetermined position, and a cavity space is formed between the movable mold 33 and the fixed mold 32.

Next, the control device 80 controls the injection device 50 to fill the cavity space with the liquid molding material. When filling the molding material, the control device 80 can control the mold clamping motor 26 to prevent the movable platen 13 from advancing and retracting.

Thereafter, the control device 80 controls the mold clamping motor 26 to further advance the movable platen 13. The spring portion 33c is further contracted, the cavity space becomes small, and the molding material in the cavity space is compressed. It is possible to obtain an effect that the molded article is thinned, the transcription property is improved, and shrinkage is reduced.

Further, in the present embodiment, the compression of the molding material in the cavity space is started after the filling of the molding material is completed, but it may be started in the middle of filling the molding material. The movable platen 13 can advance and retreat when filling the molding material.

However, the control device 80 performs feedback control of the mold clamping motor 26 so that the deviation between the set value of the control amount and the actual value becomes zero.

The control amount includes, for example, a mold clamping force, a position of the movable platen 13, and the like. The position of the movable platen 13 can be expressed, for example, as a distance from the reference position of the movable platen 13, or an interval between the mold main body portion 33a of the movable mold 33 and the fixed mold 32.

The actual value of the mold clamping force is detected using the mold clamping force sensor 18. The position of the movable platen 13 is detected using an encoder 26a or a distance sensor. As the distance sensor, for example, a gap sensor that detects a gap between the mold main body portion 33a of the movable mold 33 and the fixed mold 32 can be cited.

Fig. 2 is a view showing an operation screen of the injection molding machine according to the embodiment of the present invention. The operation screen 90 shown in FIG. 2 is displayed on the display unit 72.

The operation screen 90 is for inputting a setting value for controlling the mold clamping motor 26. The user operates the operation unit 71 while observing the operation screen 90, and inputs the set value to the operation screen 90.

For example, as shown in FIG. 2, the operation screen 90 includes a selection unit 91, a setting value input unit 92, a holding time input unit 93, a switching time input unit 94, a reading unit 95, and actual value display units 96 and 97.

The selection unit 91 selects a control amount from among a plurality of candidate objects set in advance. The candidate list can be displayed on the operation screen 90 in accordance with a prescribed input operation. The user operates the operation unit 71 while observing the candidate list to select a control amount from among a plurality of candidate objects set in advance.

The operation screen 90 displays only the selected control amount in the selection unit 91. Since only the amount of control actually used is displayed, unnecessary information is less and the visibility is better than when all candidates are displayed. Thereby, erroneous input or the like can be suppressed.

The selection unit 91 can arrange a plurality of numbers in the order of control. The plurality of selection sections 91 can be arranged in a line. The amount of control may be changed stepwise over time, and an appropriate amount of control may be selected depending on the situation.

The number of the selection portions 91 may be three or more. At this time, the interval between the adjacent ones of the selection portions 91 may be longer than the interval between the other ones of the adjacent selection portions 91. For example, in FIG. 2, the interval W1 between the first selection unit 91 and the second selection unit 91 is longer than the interval W2 between the second selection unit 91 and the third selection unit 91. It is possible to show other controls different from the mold clamping motor control in the gap between the first control and the second control. The case of (for example, filling of a molding material).

When the number of selection sections 91 is larger than the number required by the user, the user can choose not to use it without having to select the control amount in the unnecessary selection section 91. An image such as "break" or the like, a symbol such as "-", or a graphic text is used to indicate that it is not used.

The set value input unit 92 inputs the set value corresponding to the control amount selected by the selection unit 91. The number of setting value input units 92 and the number of selection units 91 may be the same. The user inputs the set value to the set value input unit 92 by operating the operation unit 71 while observing the operation screen 90. The same set value input unit 92 is used regardless of the type of the control amount. The number of setting value input units is smaller than that of the case where the set value input unit is set in accordance with the candidate amount of the control amount, and the visibility is good.

Similarly to the selection unit 91, the set value input unit 92 can arrange a plurality of numbers in accordance with the control order. The plurality of set value input sections 92 can be arranged in a line. The set value can be changed stepwise over time. The number of setting value input units 92 may be three or more. At this time, the interval between the set of adjacent set value input units 92 may be longer than the interval between the other set of adjacent set value input units 92. It is possible to display the timing at which other controls than the mold clamping motor control are performed.

The hold time input unit 93 inputs the hold time of the set value. The number of holding time input portions 93 may be the same as the number of setting input portions 92. The user inputs the holding time to the holding time input unit 93 by operating the operation unit 71 while observing the operation screen 90.

Similarly to the selection unit 91, the hold time input unit 93 can be controlled There are a plurality of orders in the order. The plurality of hold time input sections 93 can be arranged in a line. The number of holding time input units 93 may be three or more. At this time, the interval between the adjacent ones of the holding time input portions 93 may be longer than the interval between the other ones of the adjacent holding time input portions 93. It is possible to display the timing at which other controls than the mold clamping motor control are performed.

The control device 80 can manage the total time of the mold clamping motor control set on the operation screen 90. The control device 80 calculates the hold time input to the hold time input unit 93 (the rightmost side in FIG. 2), so that the total time becomes a predetermined time. In this manner, the control device 80 can input the calculated hold time to the hold time input portion 93 whose control sequence is the last.

The switching time input unit 94 is a person who inputs the switching time of the set value. The set value is changed at the switching speed corresponding to the switching time. It is easier to grasp the above total time than when the switching speed is input instead of the switching time. The user inputs the switching time to the switching time input unit 94 by operating the operation unit 71 while observing the operation screen 90. The control of the control amount selected by each of the selection sections 91 can be performed at predetermined intervals.

The storage unit 81 stores the material set on the operation screen 90. The data can be stored in each mode. The storage unit 81 can store new materials each time the settings are updated, and delete the old materials.

The reading unit 95 reads the material stored in the storage unit 81 onto the operation screen 90. The user operates the operation unit 71 while observing the operation screen 90, for example, by aligning the cursor point with the reading unit 95 and then pressing the execution button. The material stored in the storage unit 81 is input to the operation screen 90. It can reduce the trouble of setting. Alternatively, you can use the mouse pointer instead of the cursor point and use the mouse button instead of the execution button.

The reading unit 95 can select a mode person who reads the material of the operation screen 90. The mode list can be displayed on the operation screen 90 in accordance with a prescribed input operation. The user selects the mode of reading the material of the operation screen 90 by operating the operation unit 71 while observing the mode list. The selected mode is displayed on the reading unit 95.

The actual value display unit 96 displays the actual value of the clamping force of one candidate object as the control amount. The actual value display unit 97 displays the actual value of the position of the movable platen 13 which is another candidate object of the control amount. At least one (in the present embodiment, all) actual values of a plurality of candidate objects of the control amount are displayed. The deviation between the set value of the control amount selected by the selection unit 91 and the actual value can be known. Further, the actual value of the candidate object that is not selected by the selection unit 91 can be known. Further, the quality of the molded article can be evaluated by the actual value of each candidate object.

Further, the mold device 30 of the present embodiment has a spring portion, but the configuration of the mold device is not particularly limited. For example, the mold device 30A shown in Fig. 3 can be used instead of the mold device 30 shown in Fig. 1.

Fig. 3 is a view showing a mold apparatus according to a first modification. The mold apparatus 30A of the first modification has a fixed mold 32A and a movable mold 33A. The movable mold 33A has a mold main body portion 33Aa and a frame portion 33Ab. The frame portion 33Ab surrounds the convex portion of the mold main body portion 33Aa, and the mold main body portion The end of the built-in cylinder of the 33Aa is connected.

When the movable platen 13 is advanced, the frame portion 33Ab of the movable mold 33A is pressed by the fixed mold 32A, and the built-in cylinder of the mold main body portion 33Aa is contracted. The convex portion of the mold main body portion 33Aa is advanced to a predetermined position, and a cavity space is formed between the movable mold 33A and the fixed mold 32A. After the completion of the molding material in the cavity space, or when the movable platen 13 is further advanced, the built-in cylinder of the mold main body portion 33Aa is further contracted as the mold main body portion 33Aa advances, and the cavity space is reduced. It is capable of compressing the forming material in the cavity space.

Further, similarly to the movable mold 33A, the fixed mold 32A may have a mold main body portion and a frame portion in which a cylinder is built.

In the above, the embodiment of the injection molding machine has been described. However, the present invention is not limited to the above-described embodiments, and various modifications and improvements can be made within the scope of the gist of the invention described in the scope of the invention.

For example, the injection molding machine of the above-described embodiment is a horizontal injection molding machine that opens and closes the mold in the horizontal direction, but may be a vertical injection molding machine that opens and closes the mold in the vertical direction.

Further, although the injection molding machine of the above embodiment compresses the molding material in the cavity space, the molding material in the cavity space may not be compressed.

Further, the operation screen of the above embodiment is for controlling the drive unit of the mold clamping device, but the type of the drive unit is not limited. For example, the operation screen may be used as a controller for the drive unit of the injection device.

90‧‧‧ operation screen

91‧‧‧Selection Department

92‧‧‧Set value input section

93‧‧‧Maintenance time input

94‧‧‧Switching time input section

95‧‧‧Reading Department

96‧‧‧ Actual value display

97‧‧‧ Actual value display

W1‧‧‧ interval

W2‧‧‧ interval

Claims (8)

An injection molding machine comprising: a movable portion; a driving portion for driving the movable portion; a control device for controlling the driving portion; and a display portion for displaying an operation screen, wherein the operation screen is input for controlling the setting of the driving portion The value of the operation screen includes a selection unit that selects a control amount of the set value from among a plurality of predetermined candidate objects. The injection molding machine according to the first aspect of the invention, wherein the selection unit is arranged in plural in a control order. The injection molding machine according to claim 2, wherein the number of the selection units is three or more, and an interval between the adjacent ones of the one group is smaller than an interval between the selection units adjacent to the other one group. Longer. The injection molding machine according to any one of claims 1 to 3, wherein the operation screen further includes a setting value input unit that inputs a setting value corresponding to a control amount selected by the selection unit. The injection molding machine according to any one of claims 1 to 3, wherein the operation screen further has a display of the plurality of candidate objects The actual value display portion of at least one actual value. The injection molding machine according to any one of claims 1 to 3, further comprising: a storage unit that stores data set in the operation screen, wherein the operation screen has information for reading the data stored in the storage unit The reading unit of the operation screen. The injection molding machine according to claim 6, wherein the storage unit stores a plurality of pieces of data set on the operation screen for each mode, and the reading unit selects a mode of reading data of the operation screen. In an operation screen of the injection molding machine, a setting value for controlling a driving unit of the injection molding machine is input, and an operation screen of the injection molding machine has a control amount for selecting the set value from among a plurality of predetermined candidate objects. Selection department.