TW201436984A - Injection molding machine - Google Patents

Abstract

This invention provides an injection molding machine capable of adjusting the balance of mold clamping force. The injection molding machine of this invention is provided with a fixed member (12) installed with a fixed mold (32), a first movable member (13) installed with a movable mold (33), and a second fixed member (15) connected with the first movable member (13) via a connection member (19) and connected with the first fixed member via binding rod, wherein a mold clamping force generation part (24) is composed of the second fixed member (15) and the second movable member (18) for generating a mold clamping force by the attraction force generated by electromagnets (25). The injection molding machine is also provided with a detection part (50) for detecting the postural changes of a specified member relative to a frame (11); a temperature adjusting part (43) for adjusting the temperature of the specified member or the temperature of the member connected with the specified member, and a control part (60) for controlling the temperature adjusting part (43) according to the detection result of the detection part (50).

Description

Injection molding machine

The present invention relates to an injection molding machine.

The injection molding machine has a mold clamping device that performs mold closing, mold clamping, and mold opening of the mold device. The mold device is composed of a fixed mold, a movable mold, and the like, and the mold clamping device has a fixed pressure plate to which a fixed mold is attached, and a movable pressure plate to which a movable mold is attached (for example, refer to Patent Document 1).

(previous technical literature) (Patent Literature)

Patent Document 1: International Publication No. 2005/090052

In the past, the balance of the clamping force was broken, and the quality of the molded product such as flashing around the molded article was deteriorated.

The present invention has been made in view of the above problems, and an object thereof is to provide an injection molding machine capable of adjusting a balance of a clamping force.

In order to solve the above problems, an injection molding machine according to an aspect of the present invention includes: a first fixing member to which a fixed mold is attached; a first movable member to which a movable mold is attached; and a second movable member via a connecting member and The first movable member is coupled to move together with the first movable member; and the second fixed member is disposed between the first movable member and the second movable member, and is coupled to the first fixed member via the tie rod The second fixing member and the second movable member constitute a clamping force generating portion that generates a clamping force by an adsorption force generated by an electromagnet, and the injection molding machine further includes a detecting unit that detects the first fixing At least one of the member, the first movable member, the second fixing member, and the second movable member is changed in posture with respect to the frame, and the temperature adjustment portion adjusts a temperature of the member that detects the change by the detecting portion or The temperature of the member connected to the member; and the control unit controls the temperature adjustment unit based on the detection result of the detection unit.

According to the present invention, it is possible to provide an injection molding machine capable of adjusting the balance of the clamping force.

10‧‧‧Clamping device

11‧‧‧Frame

12‧‧‧Fixed platen (1st fixing member)

13‧‧‧ movable platen (1st movable member)

15‧‧‧ Rear platen (2nd fixing member)

16‧‧‧ tied

18‧‧‧Adsorption member (2nd movable member)

19‧‧‧ rod (connecting member)

21‧‧‧Linear motor

24‧‧‧Clamping force generation department

25‧‧‧Electromagnet

26‧‧‧Adsorption Department

30‧‧‧Molding device

32‧‧‧Fixed mode

33‧‧‧ movable mold

42‧‧‧Fixed plate temperature control department

43‧‧‧ movable platen temperature control department

45‧‧‧ rear platen temperature control department

48‧‧‧Adsorption component temperature control department

50‧‧‧Detection Department

51, 52‧‧‧ magnetic sensor

53, 54‧‧‧ strain sensor

60‧‧‧Control Department

146‧‧‧ tie rod temperature control department

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

Fig. 2 is a view showing injection molding according to the first embodiment of the present invention. A diagram of the state at the end of the mold opening.

Fig. 3 is a view of the fixed platen according to the first embodiment of the present invention as seen from the rear.

Fig. 4 is a view of the movable platen according to the first embodiment of the present invention as seen from the rear.

Fig. 5 is a view of the pressure plate after the first embodiment of the present invention is viewed from the front.

Fig. 6 is a view of the adsorption member according to the first embodiment of the present invention as seen from the rear.

Fig. 7 is a view showing a state at the time of completion of mold opening by the injection molding machine according to the modification of the first embodiment of the present invention.

Fig. 8 is a view showing a state at the time of completion of mold closing by the injection molding machine according to the second embodiment of the present invention.

Fig. 9 is a view showing a state at the time of completion of mold opening by the injection molding machine according to the second embodiment of the present invention.

Fig. 10 is a view showing a state at the time of completion of mold opening of the injection molding machine according to the modification of the second embodiment of the present invention.

In the following, the embodiments for carrying out the invention will be described with reference to the accompanying drawings. In addition, the moving direction of the movable platen when the mold is closed is referred to as the front, and the moving direction of the movable platen at the time of mold opening is referred to as the rear. And, the direction perpendicular to the frame is taken as the upper and lower Directions are explained. The front-rear direction, the up-and-down direction, and the left-right direction are mutually perpendicular directions. Further, the injection molding machine of the present embodiment is horizontal but may be vertical.

[First Embodiment]

Fig. 1 is a view showing a state at the time of completion of mold closing by the injection molding machine according to the first embodiment of the present invention. Fig. 2 is a view showing a state at the time of completion of mold opening by the injection molding machine according to the first embodiment of the present invention. In the second drawing, the one-point lock line magnifies the state in which the adsorption member 18 and the movable platen 13 connected via the rod 19 are inclined with respect to the frame 11, and the solid line shows the state in which the adsorption member 18 and the movable platen 13 are perpendicular to the frame 11.

The injection molding machine includes a mold clamping device 10 and a control unit 60 (see FIG. 2) for performing mold closing, mold clamping, and mold opening of the mold device 30. The mold device 30 is composed of, for example, a fixed mold 32 and a movable mold 33.

The mold clamping device 10 includes a frame 11, a fixed pressure plate 12 as a first fixing member, a movable pressure plate 13 as a first movable member, a rear pressure plate 15 as a second fixing member (and a mold clamping member), and a second movable member. The adsorption member 18, the linear motor 21 as a mold opening and closing drive unit, the mold clamping force generation unit 24, and the like.

The fixed platen 12 is placed on the frame 11 in a retractable manner. A fixed mold 32 is attached to the mold mounting surface of the fixed platen 12.

The movable platen 13 is fixed to the movable guide block 14 along guides (e.g., guide rails) 17 laid on the frame 11. Thereby, the movable platen 13 can be moved back and forth with respect to the frame 11. Mould of movable platen 13 A movable mold 33 is mounted on the mounting surface.

The rear platen 15 is coupled to the fixed platen 12 via a plurality of (for example, four) tie rods 16. The rear pressure plate 15 is disposed between the movable platen 13 and the adsorption member 18 and is fixed to the frame 11.

The adsorption member 18 is coupled to the movable platen 13 via a rod 19 as a coupling member, and moves together with the movable platen 13. After being disposed between the movable platen 13 and the adsorption member 18, the platen 15 is formed with an insertion hole through which the rod 19 is inserted.

The adsorbing member 18 is fixed to the movable sliding base 20 along a guide 17 laid on the frame 11. Thereby, the adsorption member 18 is movable rearward than the rear platen 15.

The linear motor 21 moves the movable platen 13 and the adsorption member 18 connected via the rod 19 with respect to the frame 11. The linear motor 21 is disposed, for example, between the adsorption member 18 and the frame 11, and the thrust generated by the linear motor 21 is transmitted to the movable platen 13 via the adsorption member 18.

Further, the linear motor 21 may be disposed between the movable platen 13 and the frame 11, and the thrust generated by the linear motor 21 may be transmitted to the adsorption member 18 via the movable platen 13.

The linear motor 21 includes a fixing member 22 and a movable member 23. The fixing member 22 is formed on the frame 11, and the movable member 23 is formed on the slide base 20. When a predetermined current is supplied to the coil of the movable member 23, the movable member 23 is advanced and retracted by the interaction between the magnetic field formed by the current flowing through the coil and the magnetic field formed by the permanent magnet of the stator 22. As a result, the adsorption member 18 and the movable platen 13 advance and retreat with respect to the frame 11, and mold closing and mold opening are performed. In addition, The configuration of the coil and the permanent magnet can be interchanged, and other coils can be used instead of the permanent magnet.

Further, instead of the linear motor 21, a rotary motor and a combination of a ball screw that converts a rotational motion of the rotary motor into a linear motion or a hydraulic cylinder may be used as the mold opening and closing drive unit.

The mold clamping force generating portion 24 is composed of a rear pressure plate 15 and an adsorption member 18, and the clamping force is generated by the suction force generated by the electromagnet 25. A predetermined portion of the suction surface of the rear platen 15, for example, a groove for accommodating the coil of the electromagnet 25 is formed around the rod 19, and a magnetic core of the electromagnet 25 is formed inside the groove. The adsorption portion 26 surrounds a predetermined portion of the adsorption surface of the adsorption member 18, such as the rod 19, and is formed at a portion opposed to the electromagnet 25. When a current is supplied to the coil of the electromagnet 25, an adsorption force is generated between the electromagnet 25 and the adsorption portion 26, and a clamping force is generated.

Further, the electromagnet 25 of the present embodiment is formed independently of the rear platen 15, but may be formed as a part of the rear platen 15. Further, the adsorption unit 26 of the present embodiment is formed independently of the adsorption member 18, but may be formed as a part of the adsorption member 18. Further, the arrangement of the electromagnet 25 and the adsorption unit 26 may be interchanged. That is, the electromagnet 25 can be formed on the side of the adsorption member 18, and the adsorption portion 26 can be formed on the side of the rear platen 15. Further, an electromagnet may be formed on both sides of the rear platen side and the adsorption member side.

Next, the operation of the mold clamping device 10 having the above configuration will be described with reference to Figs. 1 and 2 .

When the linear motor 21 is driven to advance the movable platen 13 in the state where the mold opening is completed as shown in Fig. 2, as shown in Fig. 1, the movable mold 33 and the solid mold are fixed. The fixed mold 32 makes contact and ends the mold closing. At the time when the mold closing is completed, a predetermined gap δ is formed between the rear platen 15 and the adsorption member 18, that is, between the electromagnet 25 and the adsorption portion 26. In addition, the force required to close the mold becomes very small compared to the clamping force.

After the mold closing is completed, the driving electromagnet 25 generates an adsorption force between the electromagnet 25 and the adsorption portion 26 in a predetermined gap δ. A clamping force is generated between the movable platen 13 and the fixed platen 12 by the suction force. The clamping force is detected by detecting the strain sensors 58, 59 of the elongation of the tie bars 16 corresponding to the clamping force.

A cavity space is formed between the fixed mold 32 and the movable mold 33 in the mold clamping state. A liquid molding material (for example, a molten resin) is filled in the cavity space, and the filled molding material is cured to form a molded article.

Thereafter, when the movable platen 13 is moved backward by driving the linear motor 21, the movable mold 33 is retracted to perform mold opening. After the mold is opened, the molded article is ejected from the movable mold 33.

Fig. 3 is a view of the fixed platen according to the first embodiment of the present invention as seen from the rear.

As shown in FIGS. 1 to 3, the fixed platen 12 has a fixed platen main body portion 12a to which the fixed mold 32 is attached, and a fixed platen support portion 12b that supports the fixed platen main body portion 12a. The fixed platen support portion 12b is detachably placed on the frame 11, and a gap is formed between the frame 11 and the fixed platen main body portion 12a.

The fixed platen support portion 12b supports the side surface of the fixed platen main body portion 12a. The fixed platen support portion 12b can clamp the fixed platen body portion 12a The way is set on the left and right sides. Further, the fixed platen support portion 12b may support a surface (front end surface) opposite to the mold mounting surface (rear end surface) of the fixed platen main body portion 12a.

The fixed platen support portion 12b supports the central portion in the vertical direction of the fixed platen main body portion 12a. The center position of the fixed platen main body portion 12a in the vertical direction and the center position of the attachment position of the plurality of root rods 16 in the fixed platen main body portion 12a are located at substantially the same distance from the frame 11. When the fixed platen main body portion 12a is warped by the mold clamping force or the thermal stress, warpage is generated in a vertically symmetrical manner, and the fixed platen main body portion 12a can be suppressed from inclining with respect to the frame 11.

The fixed platen main body portion 12a has a gap with the frame 11, and is connected to the fixed platen support portion 12b only at the center portion in the vertical direction. Therefore, the heat supplied from the fixed die 32 to the fixed platen main body portion 12a mainly flows out from the center portion of the fixed platen main body portion 12a in the vertical direction. Therefore, the temperature distribution of the fixed platen main body portion 12a is vertically symmetrical, and the warpage of the fixed platen main body portion 12a can be suppressed.

The fixed platen main body portion 12a has a gap with the frame 11, and is thermally deformable in both the upper and lower directions. Therefore, in the temperature change of the fixed platen main body portion 12a, the center position of the fixed platen main body portion 12a with respect to the frame 11 is not easily shifted up and down.

The fixed platen support portion 12b may be provided with a fixed platen temperature adjustment portion 42 that adjusts the temperature of the fixed platen support portion 12b. The fixed platen support portion 12b expands and contracts in the vertical direction in accordance with the temperature change of the fixed platen support portion 12b, and can adjust the center position of the fixed platen main body portion 12a with respect to the frame 11. Set.

The fixed platen temperature adjustment unit 42 is constituted by, for example, a heating source such as a heater or a cooling source such as a water jacket. The fixed platen temperature adjustment unit 42 can function as both a heat source and a cooling source.

The fixed platen temperature adjustment unit 42 is attached to the fixed platen support portion 12b, for example. Further, the fixed platen temperature adjusting portion 42 can transfer a heat medium (heating carrier or cooling carrier) to the flow path formed on the fixed platen supporting portion 12b.

Further, the fixed platen support portion 12b of the present embodiment is connected to the central portion of the fixed platen main body portion 12a in the vertical direction, and the connection position may be various. For example, the fixed platen support portion 12b may be connected to the lower portion of the fixed platen main body portion 12a. At this time, the fixed platen temperature adjusting portion 42 can adjust the center position of the fixed platen main body portion 12a with respect to the frame 11 by adjusting the temperature of the fixed platen main body portion 12a.

Fig. 4 is a view of the movable platen according to the first embodiment of the present invention as seen from the rear.

As shown in FIG. 1, FIG. 2, and FIG. 4, the movable platen 13 has a movable platen main body portion 13a to which the movable die 33 is attached, and a movable platen support portion 13b that supports the movable platen main body portion 13a. The movable platen support portion 13b is fixed to the guide block 14, and a gap is formed between the guide block 14 and the movable platen main body portion 13a or between the frame 11 and the movable platen main body portion 13a.

The movable platen support portion 13b supports the side surface of the movable platen main body portion 13a. The movable platen support portion 13b may be provided on the right and left sides thereof so as to sandwich the movable platen main body portion 13a. Further, the movable platen support portion 13b can support the phase of the mold mounting surface (front end surface) in the movable platen main body portion 13a. The opposite side (back end).

The movable platen support portion 13b supports the central portion in the vertical direction of the movable platen main body portion 13a. The center position of the movable platen main body portion 13a in the vertical direction and the center position of the attachment position of the rod 19 in the movable platen main body portion 13a are located at substantially the same distance from the frame 11. When the movable platen main body portion 13a is warped by the mold clamping force or the thermal stress, the upper and lower symmetry forms warpage, and the movable platen main body portion 13a can be prevented from inclining with respect to the frame 11.

The movable platen main body portion 13a has a gap with the frame 11, and is connected to the movable platen support portion 13b only at the center portion in the vertical direction. Therefore, the heat supplied from the movable mold 33 to the movable platen main body portion 13a mainly flows out from the center portion of the movable platen main body portion 13a in the vertical direction. Therefore, the temperature distribution of the movable platen main body portion 13a is vertically symmetrical, and the warpage of the movable platen main body portion 13a can be suppressed.

The movable platen main body portion 13a has a gap between the frame 11 and the frame 11, and is thermally deformable in both the upper and lower directions. Therefore, in the temperature change of the movable platen main body portion 13a, the center position of the movable platen main body portion 13a of the frame 11 is less likely to shift up and down.

The movable platen support portion 13b may be provided with a movable platen temperature adjustment portion 43 that adjusts the temperature of the movable platen support portion 13b. The movable platen support portion 13b expands and contracts in the vertical direction in accordance with the temperature change of the movable platen support portion 13b, and can adjust the center position of the movable platen main body portion 13a with respect to the frame 11.

The movable platen temperature adjustment unit 43 is, for example, a heating source such as a heater or a water-cooled jacket. It is composed of a cooling source. The movable platen temperature adjustment unit 43 can function as both a heat source and a cooling source.

The movable platen temperature adjustment unit 43 is attached to the movable platen support portion 13b, for example. Further, the movable platen temperature adjusting unit 43 can transfer the heat medium (heating carrier or cooling carrier) to the flow path formed on the movable platen 13.

Further, the movable platen support portion 13b of the present embodiment is connected to the central portion of the movable platen main body portion 13a in the vertical direction, and the connection position may be various. For example, the movable platen support portion 13b may be connected to the lower portion of the movable platen main body portion 13a. At this time, the movable platen temperature adjusting portion 43 can adjust the center position of the movable platen main body portion 13a with respect to the frame 11 by adjusting the temperature of the movable platen main body portion 13a.

Fig. 5 is a view of the pressure plate after the first embodiment of the present invention is viewed from the front.

As shown in FIG. 1, FIG. 2, and FIG. 5, the rear platen 15 has the platen main body portion 15a after the electromagnet 25 is formed, and the platen support portion 15b after the rear platen main body portion 15a is supported. The rear platen support portion 15b is fixed to the frame 11, and a gap is formed between the frame 11 and the rear platen main body portion 15a.

The rear platen support portion 15b supports the side surface of the rear platen main body portion 15a. The rear platen support portion 15b may be provided on the right and left sides thereof so as to sandwich the rear platen main body portion 15a. Further, the rear platen support portion 15b can support the surface (front end surface) on the opposite side of the adsorption surface (rear end surface) in the rear platen main body portion 15a.

The rear platen support portion 15b supports the center portion of the rear platen main body portion 15a in the vertical direction. The center portion of the rear platen main body portion 15a in the up and down direction and the rear platen main The center position of the mounting position of the plurality of root rods 16 in the body portion 15a is located at substantially the same distance from the frame 11. When the rear platen main body portion 15a is warped by the mold clamping force or the thermal stress, warpage is generated in a vertically symmetrical manner, and the rear platen main body portion 15a can be suppressed from inclining with respect to the frame 11.

The rear platen main body portion 15a has a gap with the frame 11, and is connected to the rear platen support portion 15b only at the center portion in the vertical direction. Therefore, the Joule heat of the electromagnet 25 mainly flows out from the center portion of the rear platen main body portion 15a in the vertical direction. Therefore, the temperature distribution of the rear platen main body portion 15a is vertically symmetrical, and the warpage of the rear platen main body portion 15a can be suppressed.

The rear platen main body portion 15a has a gap between the frame 11 and the frame 11, and is thermally deformable in both the upper and lower directions. Therefore, in the temperature change of the rear platen main body portion 15a, the center position of the platen main body portion 15a after the frame 11 is not easily shifted up and down.

The rear platen support portion 15b may be provided with a plate temperature adjustment portion 45 after the temperature of the rear platen support portion 15b is adjusted. The rear platen support portion 15b expands and contracts in the vertical direction in accordance with the temperature change of the rear platen support portion 15b, and can adjust the center position of the platen main body portion 15a with respect to the frame 11.

The rear platen temperature adjustment unit 45 is constituted by, for example, a heating source such as a heater or a cooling source such as a water jacket. The rear platen temperature adjustment unit 45 can function as both a heat source and a cooling source.

The rear platen temperature adjustment unit 45 is attached to the rear platen support portion 15b, for example. Further, the rear platen temperature adjustment unit 45 can transfer a heat medium (heating carrier or cooling carrier) to the flow path formed in the rear platen support portion 15b.

Further, the rear platen support portion 15b and the rear platen body of the present embodiment The central portion of the portion 15a in the vertical direction is connected, and the connection position may be various. For example, the rear platen support portion 15b may be connected to the lower portion of the rear platen main body portion 15a. At this time, the rear platen temperature adjusting portion 45 can adjust the center position of the platen main body portion 15a with respect to the frame 11 by adjusting the temperature of the rear platen main body portion 15a.

Fig. 6 is a view of the adsorption member 18 according to the first embodiment of the present invention as seen from the rear.

As shown in FIG. 1, FIG. 2, and FIG. 6, the adsorption member 18 has the adsorption member main body portion 18a in which the adsorption portion 26 is formed, and the adsorption member support portion 18b that supports the adsorption member main body portion 18a. The adsorption member support portion 18b is fixed to the slide base 20, and a gap is formed between the slide base 20 and the adsorption member main body portion 18a or between the frame 11 and the adsorption member main body portion 18a.

The adsorption member supporting portion 18b supports a surface (rear end surface) opposite to the adsorption surface (front end surface) of the adsorption member main body portion 18a. The adsorption member supporting portion 18b can be provided to be bilaterally symmetrical with respect to a center position of the adsorption member main body portion 18a. Further, the adsorption member supporting portion 18b can support the side surface of the adsorption member main body portion 18a.

The adsorption member supporting portion 18b supports the central portion in the vertical direction of the adsorption member main body portion 18a. The center position of the vertical direction of the adsorption member main body portion 18a and the center position of the attachment position of the rod 19 in the adsorption member main body portion 18a are located at substantially the same distance from the frame 11. When the adsorption member main body portion 18a is warped by the mold clamping force or the thermal stress, warpage is generated in a vertically symmetrical manner, so that the adsorption member main body portion 18a can be restrained from tilting relative to the frame 11. oblique.

The adsorption member main body portion 18a has a gap with the frame 11, and is connected to the adsorption member support portion 18b only at the central portion in the vertical direction of the adsorption member main body portion 18a. Therefore, the Joule heat of the eddy current generated in the adsorption member main body portion 18a mainly flows out from the center portion of the adsorption member main body portion 18a in the vertical direction. Therefore, the temperature distribution of the adsorption member main body portion 18a is vertically symmetrical, and the warpage of the adsorption member main body portion 18a can be suppressed.

The adsorption member main body portion 18a has a gap between the frame 11 and the frame 11, and is thermally deformable in both the upper and lower directions. Therefore, in the temperature change of the adsorption member main body portion 18a, it is difficult to shift up and down with respect to the center position of the adsorption member main body portion 18a of the frame 11.

The adsorption member supporting portion 18b may be provided with an adsorption member temperature adjustment portion 48 that adjusts the temperature of the adsorption member supporting portion 18b. The adsorption member supporting portion 18b expands and contracts in the vertical direction in accordance with the temperature change of the adsorption member supporting portion 18b, and can adjust the center position of the adsorption member main body portion 18a with respect to the frame 11.

The adsorption member temperature adjustment unit 48 is configured by, for example, a heating source such as a heater or a cooling source such as a water jacket. The adsorption member temperature adjustment unit 48 can function as both a heating source and a cooling source.

The adsorption member temperature adjustment unit 48 is attached to the adsorption member support portion 18b, for example. Further, the adsorption member temperature adjustment unit 48 can transfer a heat medium (heating carrier or cooling carrier) to the flow path formed in the adsorption member 18.

Further, the adsorption member supporting portion 18b of the present embodiment is connected to the central portion of the adsorption member main body portion 18a in the vertical direction, and the connection position may be many. For example, the adsorption member supporting portion 18b may be connected to a lower portion of the adsorption member main body portion 18a. At this time, the adsorption member temperature adjustment portion 48 can adjust the center position of the adsorption member main body portion 18a with respect to the frame 11 by adjusting the temperature of the adsorption member main body portion 18a.

However, the movable mold 33 supplies heat from the movable mold 33 to the movable platen 13 because the mold temperature control machine maintains a predetermined temperature. If the temperature of the movable platen 13 becomes higher than the temperature of the adsorption member 18, and the elongation of the movable platen 13 is larger than the elongation of the adsorption member 18, the movable platen 13 or the adsorption member 18 is shown as a one-line line in FIG. It will be inclined with respect to the frame 11.

Therefore, as shown in Fig. 2, the injection molding machine includes a detecting unit 50 that detects a change in the posture of the adsorbing member 18 with respect to the frame 11, and a control unit 60 that controls the movable platen temperature adjusting unit 43 and the like based on the detection result of the detecting unit 50. . The control unit 60 is constituted by a microcomputer or the like, and realizes various functions by executing a program stored in a memory or the like by the CPU.

The detecting unit 50 includes, for example, magnetic sensors 51 and 52 that detect a magnetic field formed by the electromagnet 25. As shown by a one-line lock line in Fig. 2, if the adsorption member 18 is inclined with respect to the frame 11, the gap formed between the adsorption member 18 and the rear platen 15 at the end of the mold closing becomes uneven. The narrower portion of the gap has a higher magnetic flux density during mode locking, and the wider portion of the gap has a lower magnetic flux density during mode locking. The posture of the adsorption member 18 with respect to the frame 11 can be detected based on the detected value of the magnetic sensor 51 attached to the upper portion of the adsorption member main body portion 18a and the detected value of the magnetic sensor 52 attached to the lower portion of the adsorption member main body portion 18a. Variety. The magnetic sensors 51, 52 can be adsorbed The center position of the mounting position of the rod 19 in the main body portion 18a is symmetrically arranged in the center.

Further, although the attachment position of the magnetic sensor of the present embodiment is the adsorption member main body portion 18a, the rear platen main body portion 15a may be used. Further, although the number of the magnetic sensors of the present embodiment is plural, it may be one. The change in posture of the adsorption member 18 with respect to the frame 11 can be detected based on the detected value and the reference value of one magnetic sensor.

The detecting portion 50 may include strain sensors 53, 54 mounted to the adsorption member 18. As shown by the one-point lock line in Fig. 2, when the adsorption member 18 is inclined with respect to the frame 11, the adsorption surface of the adsorption member main body portion 18a is elongated, and the surface on the opposite side of the adsorption surface of the adsorption member main body portion 18a is contracted. The posture of the adsorption member 18 with respect to the frame 11 can be detected based on the detected value of the strain sensor 53 attached to the upper portion of the adsorption member main body portion 18a and the detected value of the strain sensor 54 attached to the lower portion of the adsorption member main body portion 18a. Variety. The strain sensors 53, 54 may be symmetrically arranged centering on the center position of the mounting position of the rod 19 in the adsorption member main body portion 18a.

Further, the attachment position of the strain sensor of the present embodiment is the adsorption member main body portion 18a, but may be the adsorption member support portion 18b, or may be a member coupled to the adsorption member 18, for example, the rod 19 and the movable platen 13 Wait. When the adsorption member 18 is inclined with respect to the frame 11, the member connected to the adsorption member 18 is strained. Further, although the number of strain sensors of the present embodiment is plural, it may be one. According to the detection value and the reference value of one strain sensor, the adsorption member 18 can be detected relative to The posture of the frame 11 changes. Further, the inclination direction of the adsorption member 18 can be detected depending on whether the strain detected by one strain sensor is elongation or contraction.

The control unit 60 controls the movable platen temperature adjustment unit 43 and the like in accordance with the detection result of the detection unit 50. For example, as shown by a one-line lock line in FIG. 2, when the adsorption member 18 is inclined with respect to the frame 11, the movable platen temperature adjustment portion 43 cools the movable platen support portion 13b. The movable platen support portion 13b is contracted, and the center position of the movable platen main body portion 13a is displaced downward to become the same height as the center position of the adsorption member main body portion 18a, as shown by the solid line in Fig. 2, and is movable via the rod 19 The pressure plate 13 or the adsorption member 18 becomes perpendicular to the frame 11.

The movable platen support portion 13b may be formed of a material (for example, copper or aluminum) having a thermal expansion coefficient higher than that of the movable platen main body portion 13a (for example, iron). The amount of expansion and contraction based on the temperature adjustment of the movable platen support portion 13b is large and easy to control.

Further, the control unit 60 can control the adsorption member temperature adjustment unit 48 in accordance with the detection result of the detection unit 50. For example, as shown by a one-line lock line in FIG. 2, when the adsorption member 18 is inclined with respect to the frame 11, the adsorption member temperature adjustment portion 48 heats the adsorption member support portion 18b. The adsorption member supporting portion 18b is extended, the center position of the adsorption member main body portion 18a is displaced upward, and becomes the same height as the center position of the movable platen main body portion 13a, and the movable platen 13 or the adsorption member 18 connected via the rod 19 is opposed to The frame 11 is vertical.

The adsorption member supporting portion 18b may have a higher coefficient of thermal expansion than the adsorption member A material (for example, copper or aluminum) of a material (for example, iron) of the main body portion 18a is formed. The amount of expansion and contraction based on the temperature adjustment of the adsorption member supporting portion 18b is large and easy to control.

[Modification of the first embodiment]

Fig. 7 is a view showing a state at the time of completion of mold opening by the injection molding machine according to the modification of the first embodiment of the present invention. In Fig. 7, the one-point lock line magnifies the state in which the pressure plate 115 and the fixed platen 112 are inclined with respect to the frame 111 after being connected via the plurality of tie bars 116, and the solid line shows the state in which the rear platen 115 and the fixed platen 112 are perpendicular to the frame 111.

The injection molding machine includes a mold clamping device 110 that performs mold closing, mold clamping, and mold opening of the mold device 130, a control unit 160, and the like. The mold device 130 is composed of, for example, a fixed mold 132 and a movable mold 133.

The mold clamping device 110 includes a frame 111, a fixed platen 112 as a first fixing member, a movable platen 113 as a first movable member, a rear platen 115 as a second fixing member (and a mold clamping member), and a second movable member. The adsorption member 118, the linear motor 121 as a mold opening and closing drive unit, the mold clamping force generation unit 124, and the like.

The linear motor 121 moves the movable platen 113 and the adsorption member 118 connected via the rod 119 with respect to the frame 111. The linear motor 121 includes a fixing member 122 and a movable member 123. The fixing member 122 is formed, for example, in the frame 111, and the movable member 123 is formed, for example, on the slide base 120.

The clamping force generating portion 124 is composed of a rear platen 115 and an adsorption member 118. For example, an electromagnet 125 is formed on the side of the rear platen 115, and the adsorption member An adsorption portion 126 is formed on the 118 side. When a current is supplied to the coil of the electromagnet 125, an adsorption force is generated between the electromagnet 125 and the adsorption portion 126, and a clamping force is generated.

However, after the tie 116 is joined, the platen 115 and the fixed platen 112 are thermally connected to the frame 111, and the frame 111 takes heat. If the temperature of the tie bar 116 near the lower side of the frame 111 becomes lower than the temperature of the tie bar 116 away from the upper side of the frame 111, and the tie bar 116 near the lower side of the frame 111 becomes shorter than the upper side of the frame 111 The tie rod 116 is shown as a one-point lock line in FIG. 7, and the rear pressure plate 115 and the fixed pressure plate 112 are inclined with respect to the frame 111.

Therefore, as shown in Fig. 7, the injection molding machine includes a detecting unit 150 that detects a change in posture of the rear platen 115 with respect to the frame 111, and a control unit 160 that controls the tie adjusting unit 146 or the like based on the detection result of the detecting unit 150. The control unit 160 is constituted by a microcomputer or the like, and realizes various functions by executing a program stored in a memory or the like by the CPU.

The detecting portion 150 includes, for example, magnetic sensors 151, 152 that detect a magnetic field formed by the electromagnet 125. As shown by the one-line lock line in Fig. 7, if the rear platen 115 is inclined with respect to the frame 111, the gap formed between the rear platen 115 and the adsorption member 118 at the end of the mold closing becomes uneven. The narrower portion of the gap has a higher magnetic flux density during mode locking; the wider portion of the gap has a lower magnetic flux density during mode locking. The posture of the rear platen 115 with respect to the frame 111 can be detected based on the detected value of the magnetic sensor 151 attached to the upper portion of the rear platen main body portion 115a and the detected value of the magnetic sensor 152 attached to the lower portion of the rear platen main body portion 115a. Variety. Magnetic sensor 151, The 152 can be symmetrically disposed centering on the center position of the mounting position of the plurality of root rods 116 in the platen main body portion 115a.

Further, although the mounting position of the magnetic sensor of the present embodiment is the rear platen main body portion 115a, the adsorption member main body portion 118a may be used. Further, although the number of the magnetic sensors of the present embodiment is plural, it may be one. The posture of the rear platen 115 with respect to the frame 111 can be detected in accordance with the detected value and the reference value of one magnetic sensor.

The detecting portion 150 may include strain sensors 153, 154 mounted to the rear platen 115. As shown by a one-line lock line in Fig. 7, when the rear platen 115 is inclined with respect to the frame 111, the suction surface of the rear platen main body portion 115a is contracted, and the surface on the opposite side of the suction surface of the rear platen main body portion 115a is elongated. The posture of the rear platen 115 relative to the frame 111 can be detected based on the detected value of the strain sensor 153 attached to the upper portion of the rear platen body portion 115a and the detected value of the strain sensor 154 attached to the lower portion of the rear platen body portion 115a. Variety. The strain sensors 153, 154 can be symmetrically arranged centering on the center position of the mounting position of the plurality of root rods 116 in the rear plate main body portion 115a.

Further, the strain sensor of the present embodiment is attached to the rear platen main body portion 115a, but may be the rear platen support portion 115b, or may be a member that is coupled to the rear platen 115, such as the tie rod 116 and the fixed platen. 112 and so on. If the rear platen 115 is inclined with respect to the frame 111, the member coupled to the rear platen 115 is strained. Therefore, the detecting portion 150 can be constituted by a strain sensor that detects the amount of elongation of the tie rod 116 corresponding to the clamping force. For example, depending on the strain sensor 158 mounted on the lower side of the tie rod 116 The detected value and the detected value of the strain sensor 159 attached to the upper tie rod 116 can detect the change in the posture of the rear platen 115 with respect to the frame 111. Further, although the number of strain sensors of the present embodiment is plural, it may be one. The posture change of the rear platen 115 with respect to the frame 111 can be detected based on the detected value and the reference value of one strain sensor. Further, the inclination direction of the rear platen 115 can be detected depending on whether the strain detected by one strain sensor is elongation or contraction.

The control unit 160 controls the tie temperature adjustment unit 146 based on the detection result of the detection unit 150. The tie-bar temperature adjustment unit 146 individually adjusts the temperature of the plurality of root rods 116, and is constituted by a heat source such as a heater or a cooling source such as a water jacket, and functions as both a heat source and a cooling source. The tie-bar temperature adjustment unit 146 is attached to each of the tie bars 116, and may transfer a heat medium (heating carrier or cooling carrier) to the flow path formed in each of the tie bars 116.

For example, as shown by a one-line lock line in Fig. 7, if the rear platen 115 is inclined with respect to the frame 111, the lower tie rod temperature adjusting portion 146 heats the lower tie rod 116. The length of the lower tie rod 116 is elongated and becomes the same as the length of the upper tie rod 116. As shown by the solid line in FIG. 7, after the plurality of tie rods 116 are joined, the pressure plate 115 and the fixed pressure plate 112 become It is perpendicular to the frame 111.

Further, as shown by a one-line lock line in Fig. 7, if the rear platen 115 is inclined with respect to the frame 111, the upper tie bar temperature adjusting portion 146 can cool the upper tie bar 116. The length of the upper tie rod 116 is contracted and becomes the same as the length of the lower tie rod 116. After the plurality of tie rods 116 are joined, the pressure plate 115 and the fixed pressure plate 112 become opposite to the frame. 111 vertical.

Each tie rod 116 may be divided into a plurality of blocks in the longitudinal direction, and the block in which the tie rod temperature adjustment portion 146 is mounted may be made of a material having a thermal expansion coefficient higher than that of other bulk materials such as iron (for example, copper or Aluminum) is formed. The amount of expansion and contraction based on the temperature adjustment of the tie rod 116 is large and easy to control.

[Second Embodiment]

The mold clamping device according to the first embodiment described above has a linear motor and an electromagnet. On the other hand, the mold clamping device of the present embodiment is different from the first embodiment in that it has a mold clamping motor and a toggle mechanism.

Fig. 8 is a view showing a state at the time of completion of mold closing by the injection molding machine according to the second embodiment of the present invention. Fig. 9 is a view showing a state at the time of completion of mold opening by the injection molding machine according to the second embodiment of the present invention. In the ninth figure, the one-point lock line enlarges the state in which the fixed pressure plate 212 and the rear pressure plate 215 which are connected via the plurality of base rods 216 are inclined with respect to the frame 211, and the solid line shows the state in which the fixed pressure plate 212 and the rear pressure plate 215 are perpendicular to the frame 211.

The injection molding machine includes a mold clamping device 210 that performs mold closing, mold clamping, and mold opening of the mold device 230, a control unit 260, and the like. The mold device 230 is composed of, for example, a fixed mold 232 and a movable mold 233.

The mold clamping device 210 has, for example, a frame 211, a fixed platen 212 as a fixing member, a movable platen 213 as a movable member, a rear platen 215 as a mold clamping member, a tie rod 216, a toggle mechanism 220, a mold clamping motor 221, and the like.

The fixed platen 212 may be fixed to the frame 211. A fixed mold 232 is mounted on the mold mounting surface of the fixed platen 212.

Like the fixed platen 12 of the first embodiment, the fixed platen 212 has a fixed platen main body portion 212a to which the fixed mold 232 is attached, and a fixed platen support portion 212b that supports the fixed platen main body portion 212a. The fixed platen support portion 212b is provided with a fixed platen temperature adjustment portion 242 that adjusts the temperature of the fixed platen support portion 212b.

The movable platen 213 is fixed to the movable guide block 214 along the guide 217 laid on the frame 211. Thereby, the movable platen 213 can move back and forth with respect to the frame 211. A movable mold 233 is attached to the mold mounting surface of the movable platen 213.

Like the movable platen 13 of the first embodiment, the movable platen 213 has a movable platen main body portion 213a to which the movable mold 233 is attached, and a movable platen support portion 213b that supports the movable platen main body portion 213a. The movable platen support portion 213b is provided with a movable platen temperature adjustment portion 243 that adjusts the temperature of the movable platen support portion 213b.

The rear pressure plate 215 is disposed behind the movable pressure plate 213 and coupled to the fixed pressure plate 212 via a plurality of base rods 216. The rear platen 215 is retractably placed on the frame 211 to allow the tie rod 216 to elongate during mold clamping.

Like the rear platen 15 of the first embodiment, the rear platen 215 has the platen main body portion 215a after the toggle mechanism 220 is supported, and the platen support portion 215b after the rear platen main body portion 215a is supported. The rear platen support portion 215b is provided with a temperature adjustment portion 245 for adjusting the temperature of the rear platen support portion 215b.

The toggle mechanism 220 is disposed on the movable platen 213 and the rear platen 215 between. The toggle mechanism 220 is composed of, for example, a crosshead 220a that is retractable with respect to the frame 211, and a plurality of links that transmit the thrust input to the crosshead 220a to the movable platen 213.

The mold clamping motor 221 includes a ball screw mechanism as a motion converting portion that converts a rotational motion into a linear motion, and the crosshead 220a is advanced and retracted by advancing and retracting the drive shaft 222 to actuate the toggle mechanism 220.

Next, the operation of the mold clamping device 210 having the above configuration will be described with reference to Figs. 8 and 9.

When the mold clamping motor 221 is driven in the state where the mold opening is completed as shown in Fig. 9, the crosshead 220a is advanced to move the toggle mechanism 220, the movable platen 213 is advanced, and the movable mold 233 comes into contact with the fixed mold 232 to end. Closed mode.

After the mold closing is completed, the mold clamping motor 221 is driven to generate a clamping force multiplied by the toggle ratio of the thrust of the mold clamping motor 221. The clamping force is detected by the strain sensors 258, 259 that detect the elongation of the tie bars 216 corresponding to the clamping force.

A cavity space is formed between the fixed mold 232 and the movable mold 233 in the mold clamping state. A liquid molding material (for example, a molten resin) is filled in the cavity space, and the filled molding material is cured to form a molded article.

Thereafter, the mold clamping motor 221 is driven to retract the crosshead 220a to actuate the toggle mechanism 220, and the movable platen 213 is retracted to perform mold opening. After the mold opening is completed, the molded article is ejected from the movable mold 233.

However, the fixed mold 232 supplies heat from the fixed mold 232 to the fixed platen 212 because the mold temperature adjuster maintains a predetermined temperature. If the temperature of the fixed platen 212 is fixed The degree is higher than the temperature of the rear platen 215, and the elongation of the fixed platen 212 is greater than the elongation of the rear platen 215, and the fixed platen 212 or the rear platen 215 is inclined with respect to the frame 211 as shown by a one-line line in FIG.

Therefore, as shown in FIG. 9, the injection molding machine includes a detecting unit 250 that detects a change in posture of the fixed platen 212 with respect to the frame 211, and a control unit 260 that controls the fixed platen temperature adjusting unit 242 and the like in accordance with the detection result of the detecting unit 250. The control unit 260 is constituted by a microcomputer or the like, and realizes various functions by executing a program stored in a memory or the like by the CPU.

The detecting portion 250 may include, for example, strain sensors 253, 254 attached to the fixed platen 212. As shown by a slight lock line in Fig. 9, if the fixed platen 212 is inclined with respect to the frame 211, the mold mounting surface of the fixed platen main body portion 212a is contracted, and the opposite side of the mold mounting surface of the fixed platen main body portion 212a is elongation. The posture of the fixed platen 212 relative to the frame 211 can be detected based on the detected value of the strain sensor 253 attached to the upper portion of the fixed platen body portion 212a and the detected value of the strain sensor 254 attached to the lower portion of the fixed platen body portion 212a. Variety. The strain sensors 253, 254 may be symmetrically arranged centering on the center position of the mounting position of the plurality of root rods 216 in the fixed platen main body portion 212a.

Further, the strain sensor of the present embodiment is attached to the fixed platen main body portion 212a, but may be a fixed platen support portion 212b, or may be a member coupled to the fixed platen 212, such as a tie rod 216 and a rear platen. 215 and so on. If the fixed platen 212 is inclined with respect to the frame 211, the member coupled to the fixed platen 212 is strained. Therefore, the detecting portion 250 can detect the elongation of the tie rod 216 corresponding to the clamping force. The strain sensor is constructed. For example, the change in the posture of the fixed platen 212 with respect to the frame 211 can be detected based on the detected value of the strain sensor 258 attached to the lower side tie rod 216 and the detected value of the strain sensor 259 attached to the upper side tie rod 216. Further, although the number of strain sensors of the present embodiment is plural, it may be one. The change in posture of the fixed platen 212 with respect to the frame 211 can be detected based on the detected value and the reference value of one strain sensor. Further, the tilting direction of the fixed platen 212 can be detected depending on whether the strain detected by one strain sensor is elongation or contraction.

The control unit 260 can control the fixed platen temperature adjustment unit 242 and the like in accordance with the detection result of the detection unit 250. For example, as shown by a one-line lock line in FIG. 9, if the fixed platen 212 is inclined with respect to the frame 211, the fixed platen temperature adjusting portion 242 cools the fixed platen support portion 212b. The fixed platen support portion 212b is contracted, and the center position of the fixed platen main body portion 212a is displaced downward to become the same height as the center position of the rear platen main body portion 215a, as shown by the solid line in Fig. 9, via a plurality of root rods The fixed platen 212 and the rear platen 215 joined by the 216 are perpendicular to the frame 211.

The fixed platen support portion 212b may be formed of a material (for example, copper or aluminum) having a thermal expansion coefficient higher than that of the fixed platen main body portion 212a (for example, iron). The amount of expansion and contraction by the temperature adjustment of the fixed platen support portion 212b is large and easy to control.

Further, the control unit 260 can control the rear platen temperature adjustment unit 245 in accordance with the detection result of the detection unit 250. For example, if the fixed platen 212 is inclined with respect to the frame 211 as shown by the one-point lock line in FIG. 9, the rear plate is adjusted. The warm portion 245 heats the rear platen support portion 215b. The rear platen support portion 215b is extended, and the center position of the rear platen main body portion 215a is displaced upward to become the same height as the center position of the fixed platen main body portion 212a, and the fixed platen 212 and the rear platen 215 which are coupled via the plurality of tie rods 216 are changed. It is perpendicular to the frame 211.

The rear platen support portion 215b may be formed of a material (for example, copper or aluminum) having a thermal expansion coefficient higher than that of the rear platen main body portion 215a (for example, iron). The amount of expansion and contraction based on the temperature adjustment of the rear platen support portion 215b is large and easy to control.

[Modification of Second Embodiment]

Fig. 10 is a view showing a state at the time of completion of mold opening of the injection molding machine according to the modification of the second embodiment of the present invention. In Fig. 10, the one-point lock line magnifies the state in which the fixed platen 312 and the rear platen 315 which are connected via the plurality of tie bars 316 are inclined with respect to the frame 311, and the solid line shows the state in which the fixed platen 312 and the rear platen 315 are perpendicular to the frame 311.

The injection molding machine includes a mold clamping device 310 that performs mold closing, mold clamping, and mold opening of the mold device 330, a control unit 360, and the like. The mold device 330 is composed of, for example, a fixed mold 332 and a movable mold 333.

The mold clamping device 310 has, for example, a frame 311, a fixed platen 312 as a fixing member, a movable platen 313 as a movable member, a rear platen 315 as a mold clamping member, a tie bar 316, a toggle mechanism 320, a mold clamping motor 321, and the like.

However, the fixed platen 312 and the rear platen connected via the tie rod 316 The 315 is thermally coupled to the frame 311 and is captured by the frame 311. If the temperature of the tie bar 316 near the lower side of the frame 311 becomes lower than the temperature of the tie bar 316 away from the upper side of the frame 311 and the tie bar 316 near the lower side of the frame 311 becomes shorter than the system away from the upper side of the frame 311 The rod 316 is tilted with respect to the frame 311 as shown by the one-line lock line in Fig. 10, and the fixed platen 312 and the rear platen 315 are inclined with respect to the frame 311.

Therefore, as shown in Fig. 10, the injection molding machine includes a detecting unit 350 that detects a change in posture of the fixed platen 312 with respect to the frame 311, and a control unit 360 that controls the tie adjusting unit 346 or the like based on the detection result of the detecting unit 350.

The detecting portion 350 may include, for example, strain sensors 353, 354 attached to the fixed platen 312. As shown by a slight lock line in Fig. 10, if the fixed platen 312 is inclined with respect to the frame 311, the mold mounting surface of the fixing member main body portion 312a is elongated, and the opposite side of the mold mounting surface of the fixing member main body portion 312a is shrink. The posture of the fixed platen 312 with respect to the frame 311 can be detected based on the detected value of the strain sensor 353 attached to the upper portion of the fixed platen body portion 312a and the detected value of the strain sensor 354 attached to the lower portion of the fixed platen body portion 312a. Variety. The strain sensors 353, 354 may be symmetrically arranged centering on the center position of the mounting position of the plurality of root rods 316 in the fixed platen main body portion 312a.

Further, although the attachment position of the strain sensor of the present embodiment is the fixed platen main body portion 312a, the fixed platen support portion 312b may be fixed, or the pressure plate 315 may be coupled to the fixed platen 312 via the tie rod 316. When the fixed platen 312 is inclined with respect to the frame 311, the rear platen 315 Will produce strain. Further, although the number of strain sensors of the present embodiment is plural, it may be one. The change in posture of the fixed platen 312 with respect to the frame 311 can be detected based on the detected value and the reference value of one strain sensor. Further, the tilting direction of the fixed platen 312 can be detected depending on whether the strain detected by one strain sensor is elongation or contraction.

The control unit 360 controls the tie temperature adjustment unit 346 based on the detection result of the detection unit 350. The tie-bar temperature adjustment unit 346 individually adjusts the temperature of the plurality of root tie bars 316, and is constituted by a heat source such as a heater or a cooling source such as a water jacket, and can function as both a heat source and a cooling source. The tie bar temperature adjustment portion 346 is attached to each of the tie bars 316, but a heat medium (heat carrier or cooling carrier) may be transferred to the flow paths formed in the respective tie bars 316.

For example, as shown by a slight lock line in Fig. 10, if the fixed platen 312 is inclined with respect to the frame 311, the upper tie bar temperature adjusting portion 346 heats the lower tie bar 316. The length of the tie rod 316 on the upper side is elongated and becomes the same as the length of the tie rod 316 on the upper side, and as shown by the solid line in FIG. 10, the fixed platen 312 or the rear platen 315 joined via the plurality of tie rods 316 becomes It is perpendicular to the frame 311.

Further, as shown by a slight lock line in Fig. 10, if the fixed platen 312 is inclined with respect to the frame 311, the upper tie bar temperature adjusting portion 346 can cool the upper tie bar 316. The length of the tie rod 316 on the upper side is contracted and becomes the same as the length of the tie rod 316 on the lower side, and the fixed pressure plate 312 and the rear pressure plate 315 which are coupled via the plurality of base rods 316 become perpendicular to the frame 311.

Each tie rod 316 can be divided into a plurality of blocks in the longitudinal direction, and The block containing the tie bar temperature regulating portion 346 may be formed of a material (for example, copper or aluminum) having a thermal expansion coefficient higher than that of a bulk material such as iron. The amount of expansion and contraction based on the temperature adjustment of the tie rod 316 is large and easy to control.

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

For example, the injection molding machine of the above embodiment is of a horizontal type, but may be of a vertical type. In the case of a horizontal type, the clamping device has an upper pressing plate as a movable pressing plate, a lifting plate that is coupled to the upper platen via the tie bar and moves together with the upper platen, and a lower platen between the upper plate and the lower platen as a fixed platen. .

10‧‧‧Clamping device

11‧‧‧Frame

12‧‧‧Fixed platen

12a‧‧‧Fixed plate body

12b‧‧‧Fixed plate support

13‧‧‧ movable platen (1st movable member)

13a‧‧‧ movable plate body

13b‧‧‧ movable plate support

14‧‧‧ Guide block

15‧‧‧ Rear platen (2nd fixing member)

15a‧‧‧ Rear plate body

15b‧‧‧ rear plate support

16‧‧‧ tied

17‧‧‧ Guides

18‧‧‧Adsorption member (2nd movable member)

18a‧‧‧Adsorption member body

18b‧‧‧Adsorption member support

19‧‧‧ rod (connecting member)

20‧‧‧Sliding base

21‧‧‧Linear motor

22‧‧‧Fixed parts

23‧‧‧ movable parts

24‧‧‧Clamping force generation department

25‧‧‧Electromagnet

26‧‧‧Adsorption Department

30‧‧‧Molding device

32‧‧‧Fixed mode

33‧‧‧ movable mold

43‧‧‧ movable platen temperature control department

48‧‧‧Adsorption component temperature control department

50‧‧‧Detection Department

51‧‧‧Magnetic sensor

52‧‧‧Magnetic sensor

53‧‧‧ strain sensor

54‧‧‧ strain sensor

58‧‧‧ strain sensor

59‧‧‧ strain sensor

60‧‧‧Control Department

Claims (5)

An injection molding machine comprising: a first fixing member to which a fixed mold is attached; a first movable member to which a movable mold is attached; and a second movable member coupled to the first movable member via a connecting member and the first movable member And the second fixing member is disposed between the first movable member and the second movable member, and is coupled to the first fixing member via the tie bar, and the second fixing member and the second movable member are A mold clamping force generating unit that generates a clamping force by an adsorption force generated by an electromagnet, the injection molding machine further comprising: a detecting unit that detects the first fixing member, the first movable member, and the second fixing member At least one of the second movable members changes in posture with respect to the frame; the temperature adjustment unit adjusts a temperature of a member that detects the change or a temperature of a member that is connected to the member by the detecting unit; and a control unit The detection result of the detecting unit controls the temperature adjustment unit. The injection molding machine according to claim 1, wherein the detecting unit detects a change in the magnetic field formed by the electromagnet. An injection molding machine according to claim 1 or 2, wherein The detecting unit detects that the change is detected by the detecting unit detecting strain of the changed member or strain of a member connected to the member. An injection molding machine comprising: a fixing member to which a fixed mold is attached; a movable member to which a movable mold is attached; a mold clamping member coupled to the fixing member or the movable member via a tie rod; and a strain detecting portion attached to the fixing member At least one of the movable member, the mold clamping member, and the tie rod; the temperature adjustment portion adjusts a temperature of the fixed member, a temperature of the movable member, or a temperature of the mold clamping member; and a control portion The temperature control unit is controlled based on the detection result of the strain detecting unit. An injection molding machine comprising: a fixing member to which a fixed mold is attached; a movable member to which a movable mold is attached; a mold clamping member coupled to the fixing member or the movable member via a tie rod; and a strain detecting portion attached to the fixing a member and at least one member of the movable member that is coupled to the tie rod and the mold clamping member; a tie rod temperature adjustment portion that adjusts a temperature of the tie rod; and a control portion that detects the strain detection portion As a result, the aforementioned tie rod tempering section is controlled.