KR101385787B1 - Injection molding machine - Google Patents

Abstract

[PROBLEMS] To provide an injection molding machine capable of joining each steel plate in a correct positional relationship while forming a member related to an electromagnet by a laminated steel sheet.
[Injection means] The injection molding machine according to the present invention comprises: a first fixing member on which a fixed mold is mounted, a second fixing member provided to face the first fixing member, a first movable member on which a movable mold is mounted, A second movable member connected to the first movable member and moving together with the first movable member, wherein the second fixed member and the second movable member constitute a clamping force generating mechanism for generating a clamping force by suction force by an electromagnet, At least one of the second fixing member and the second movable member constituting the generating mechanism includes a laminated steel sheet having grooves extending in a predetermined direction while laminating a plurality of steel sheets, and a fitting member inserted into the groove of the laminated steel sheet. The groove has a cross-sectional shape which regulates the rotational movement of the laminated steel sheet by the fitting member fitted into the groove.

Description

Injection molding machine

The present invention relates to an injection molding machine having an electromagnet for driving a mold clamping operation.

Conventionally, in an injection molding machine, a resin is injected from an injection nozzle of an injection apparatus, filled in a cavity space between a stationary mold and a movable mold, and solidified to obtain a molded article. Then, a mold clamping apparatus is provided for moving the movable mold relative to the stationary mold to perform mold closing, mold clamping and mold opening.

The mold clamping apparatus includes an oil pressure type mold clamping device driven by supplying oil to a hydraulic cylinder and an electric mold clamping device driven by an electric motor. Is high, does not pollute the environment, and is also widely used because of its high energy efficiency. In this case, by driving the electric motor, the ball screw is rotated to generate thrust, and the thrust is expanded by the toggle mechanism to generate a large clamp force.

However, since the toggle mechanism is used in the electromechanical mold-clamping apparatus having such a constitution, it is difficult to change the mold clamping force due to the characteristics of the toggle mechanism, so that the response and stability are poor and the mold clamping force can not be controlled during molding . Therefore, there is provided a mold clamping device capable of directly using a thrust generated by a ball screw as a mold clamping force. In this case, since the torque of the electric motor and the clamping force are proportional, the clamping force can be controlled during molding.

However, in the conventional mold clamping apparatus, the ball screw has low resistance to load, so that not only a large mold clamping force can be generated but also the mold clamping force fluctuates due to the torque ripple generated in the motor. In addition, in order to generate the clamping force, it is necessary to constantly supply electric current to the motor, which increases the power consumption and heat generation amount of the motor. Therefore, it is necessary to increase the rated output of the motor by that much, thereby increasing the cost of the clamping device.

Therefore, a mold clamping apparatus using a linear motor for mold opening / closing operation and using an attraction force of electromagnet for mold clamping operation can be conceived (for example, Patent Document 1).

WO 05/090052 Pamphlet

By the way, in the case of using the mold clamping apparatus using the adsorption force of the electromagnet as described in Patent Literature 1, there is a problem of response delay or iron loss due to the generation of eddy current, resulting in heat generation, and the like. The member (typically the rear platen) can be removed by forming a laminated steel sheet. However, when the rear platen is constituted, for example, from laminated steel sheets, it is useful to combine (integrate) these steel sheets in a correct positional relationship.

Accordingly, an object of the present invention is to provide an injection molding machine capable of joining each steel plate in a correct positional relationship while forming a member related to an electromagnet by a laminated steel sheet.

According to one aspect of the present invention, there is provided a method of manufacturing a semiconductor device including a first fixing member,

A second fixing member installed to face the first fixing member;

A first movable member on which the movable mold is mounted,

And a second movable member connected to the first movable member and moving together with the first movable member,

The second fixing member and the second movable member constitute a mold-clamping force generating mechanism for generating mold clamping force by an attraction force by the electromagnet,

At least one of the second fixing member and the second movable member constituting the clamping force generating mechanism is a laminated steel sheet having grooves extending in a predetermined direction while laminating a plurality of steel sheets, and sandwiched in a groove of the laminated steel sheet. With embedding member encased,

The groove is provided with an injection molding machine, characterized in that it has a cross-sectional shape for regulating the rotational movement of the laminated steel sheet by the fitting member fitted in the groove.

According to the present invention, an injection molding machine capable of joining each steel sheet in a correct positional relationship while obtaining a member related to an electromagnet by a laminated steel sheet is obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a mold clamping apparatus in a mold closing apparatus in an injection molding machine according to an embodiment of the present invention. FIG.
Fig. 2 is a view showing the mold-starting state of the mold clamping apparatus in the injection molding machine according to the embodiment of the present invention. Fig.
3 is a perspective view showing the rear platen 13 according to one embodiment (Example 1) of the present invention.
4 (A) of FIG. 4 is sectional drawing along the line A-A of FIG. 3, FIG. 4 (B) is sectional drawing along the line B-B of FIG. 3, and FIG. 4 (C) is FIG. It is sectional drawing along the line C-C.
5 is a diagram illustrating an example of another shape of the key groove 47a.
FIG. 6: is a perspective view which shows an example of the fitting member 90 fitted in the key groove 47a of the rear platen 13 shown in FIG.
FIG. 7: is sectional drawing which removed only the main part related to the key groove 47a and the fitting member 90 of the rear platen 13 in an injection molding machine.
FIG. 8: is a figure which shows an example of the fall prevention plate material 92 which may be attached to the cross section of the rear platen 13. As shown in FIG.
Fig. 9 is a perspective view showing the rear platen 130 according to another embodiment (Example 2) of the present invention.
FIG. 10 (A) of FIG. 10 is sectional drawing along the line A-A of FIG. 9, FIG. 10 (B) is sectional drawing along the line B-B of FIG. 9, and FIG. 10 (C) is FIG. It is sectional drawing along the line C-C.
FIG. 11 is a view showing another example of the coupling mode between the fitting member 90 and the tie bar 14, wherein the key groove 47a and the fitting member 90 of the rear platen 130 in the injection molding machine are shown. This is a cross-sectional view of only the main parts involved.
FIG. 12: is a figure which shows the other application example of the fitting member 90, Comprising: It is sectional drawing which only the recessed part related to the key groove 22a and the fitting member 90 of the suction plate 22 in an injection molding machine.
Fig. 13 is a sectional view showing a main portion of the rear platen 131 according to another embodiment (Example 3) of the present invention.
14 is a cross-sectional view illustrating a modification of FIG. 13.
Fig. 15 is a sectional view showing a main portion of the rear platen 132 according to still another embodiment (Example 4) of the present invention.
Fig. 16 is a sectional view showing the main portion of the rear platen 133 according to still another embodiment (Example 5) of the present invention.
Fig. 17 is a sectional view showing the main portion of the rear platen 134 according to still another embodiment (Example 6) of the present invention.
Fig. 18 is a sectional view showing the main portion of the rear platen 135 according to still another embodiment (Example 7) of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. However, in the present embodiment, the moving direction of the movable platen when mold closing is referred to as the forward direction and the moving direction of the movable platen when the mold opening is performed is referred to as the rear direction, The direction of movement of the screw when performing injection is referred to as forward and the direction of movement of the screw when metering is referred to as rear.

Brief Description of the Drawings Fig. 1 is a view showing a mold clamping device in an injection molding machine according to an embodiment of the present invention, and Fig. 2 is a view showing a mold starting state of a mold clamping device in an injection molding machine according to an embodiment of the present invention . 1 and 2, the hatched member shows a main cross section.

In the drawing, reference numeral 10 denotes a mold clamping device, Fr denotes a frame (mount frame) of the injection molding machine, Gd denotes a guide that is movable relative to the frame Fr, and 11 denotes a guide (not shown) or It is a stationary platen mounted on the frame Fr, spaced apart from the stationary platen 11 at a predetermined interval, and is opposed to the stationary platen 11 to the rear platen 13. ) And four tie bars 14 (only two of the four tie bars 14 are shown in the drawing) between the fixed platen 11 and the rear platen 13. do. The end of the rear platen 13 side of the tie bar 14 is coupled to the fitting member 90 described later. However, the rear platen 13 is fixed with respect to the frame Fr.

And the movable platen 12 is installed so that the movable platen 12 can move forward and backward along the tie bar 14 so as to face the stationary platen 11. To this end, the movable platen 12 is fixed to the guide Gd, and a guide (not shown) for passing the tie bar 14 through the movable platen 12 at a position corresponding to the tie bar 14 A hole is formed. However, the suction plate 22, which will be described later, is also fixed to the guide Gd.

In addition, the fixed mold 15 is fixed to the stationary platen 11, and the movable mold 16 is fixed to the movable platen 12, and the movable mold 16 and the movable mold 16 are fixed as the movable platen 12 moves forward and backward. The mold 16 is connected and separated, and mold closing, mold clamping, and mold opening are performed. As shown in the figure, a cavity (not shown) is formed between the stationary mold 15 and the movable mold 16, and a resin (not shown) injected from the injection nozzle 18 of the injection apparatus 17 And is filled in the cavity space. The mold apparatus 19 is constituted by the stationary mold 15 and the movable mold 16.

The attracting plate 22 is fixed to the guide Gd in parallel with the movable platen 12. As a result, the attracting plate 22 can move forward and backward from the rear platen 13. The attracting plate 22 may be formed of a magnetic material. For example, the attracting plate 22 may be constituted by an electromagnetic laminated steel sheet formed by laminating a thin plate made of a ferromagnetic material.

The linear motor 28 is installed in the guide Gd to move the movable platen 12 forward and backward. The linear motor 28 includes a stator 29 and a mover 31. The stator 29 is mounted on the frame Fr in parallel with the guide Gd and on the movable platen 12 and the mover 31 is formed to face the stator 29 at the lower end of the movable platen 12 and over a predetermined range.

The mover (31) has a core (34) and a coil (35). The core 34 is provided with a plurality of magnetic pole teeth 33 protruding toward the stator 29 at a predetermined pitch and the coils 35 are wound around the magnetic pole teeth 33, Lt; / RTI > However, the magnetic pole teeth 33 are formed parallel to each other in a direction perpendicular to the moving direction of the movable platen 12. [ Further, the stator 29 has a core (not shown) and a permanent magnet (not shown) formed on the core. The permanent magnet is formed by alternately magnetizing N poles and S poles at the same pitch as the magnetic pole value 33. [ When the linear motor 28 is driven by supplying a predetermined current to the coil 35, the movable member 31 is advanced and retreated, whereby the movable platen 12 is advanced and retracted by the guide Gd, It is possible to perform mold opening.

However, in this embodiment, the permanent magnet is provided on the stator 29 and the coil 35 is provided on the mover 31, but a coil may be provided on the stator and a permanent magnet may be provided on the mover. In this case, as the linear motor 28 is driven, since the coil does not move, the wiring for supplying electric power to the coil can be easily performed.

The movable platen 12 or the attracting plate 22 is not limited to the structure in which the movable platen 12 and the attracting plate 22 are fixed to the guide Gd. As shown in Fig. In addition, the type of opening / closing device is not limited to the linear motor 28 but may be a hydraulic type or an electric type.

When the movable platen 12 is advanced and the movable mold 16 contacts the stationary mold 15, mold closing is performed, and then mold molding is performed. Then, in order to perform the mold, an electromagnet unit 37 is provided between the rear platen 13 and the suction plate 22. Then, a center rod 39 (rod) which extends through the rear platen 13 and the suction plate 22 and connects the movable platen 12 and the suction plate 22 is provided to be able to move forward and backward. The center rod 39 moves and retracts the attracting plate 22 in conjunction with the advancing and retreating movement of the movable platen 12 during mold closing and mold starting to move the mold clamping force generated by the electromagnet unit 37 To the platen (12).

It should be noted that the mold clamping device 11 may be formed by the stationary platen 11, the movable platen 12, the rear platen 13, the attracting plate 22, the linear motor 28, the electromagnet unit 37, 10).

The electromagnet unit 37 is composed of an electromagnet 49 formed on the rear platen 13 side and an adsorption section 51 formed on the adsorption plate 22 side. In addition, in the predetermined part of the rear end surface of the rear platen 13, in this embodiment, the groove 45 is formed around the center rod 39, and the core (inner electrode) 46 is provided inside the groove 45 inside. ) And a yoke (outer electrode) 47 is formed outside the groove 45. Then, the coil 48 is wound around the core 46 in the groove 45. Moreover, the key groove 47a mentioned later is formed in the surface of the tie bar 14 side (back yoke part) in the rear platen 13. The fitting member 90 mentioned later is fitted in the key groove 47a.

In this embodiment, the electromagnet 49 may be formed separately from the rear platen 13, and the adsorption portion 51 may be formed separately from the adsorption plate 22. The electromagnet 49 may be formed as a part of the rear platen 13, The adsorption section may be formed as a part of the adsorption plate 22. The arrangement of the electromagnet and the attracting portion may be reversed. For example, the electromagnet 49 may be provided on the suction plate 22 side, and the suction unit may be formed on the rear platen 13 side.

In the electromagnet unit 37, when a current is supplied to the coil 48, the electromagnet 49 is driven to attract the attracting portion 51 and generate a mold clamping force.

The center rod 39 is connected to the suction plate 22 at the rear end and connected to the movable platen 12 at the front end. Thus, the center rod 39 is advanced together with the movable platen 12 to advance the attracting plate 22 when the mold is closed, and retracted together with the movable platen 12 to retract the attracting plate 22 at the mold start . For this purpose, an angled hole 41 for penetrating the center rod 39 is formed in the center portion of the rear platen 13. In the case where the rear platen 13 is made of an electronic laminated steel sheet, the electronic laminated steel sheet of the rectangular hole 41 portion may be formed by division (see FIG. 3 (X1)) or after lamination. The square hole 41 may be formed by processing.

The driving of the linear motor 28 and the electromagnet 49 of the mold clamping apparatus 10 is controlled by the control section 60. [ The control unit 60 includes a CPU and a memory and includes a circuit diagram for supplying current to the coil 35 of the linear motor 28 and the coil 48 of the electromagnet 49 in accordance with the result calculated by the CPU Respectively. A load detector 55 is also connected to the control unit 60. [ The load detector 55 detects the load of the tie bar 14 at a predetermined position (a predetermined position between the stationary platen 11 and the rear platen 13) of the at least one tie bar 14 in the mold- And detects a load applied to the tie bar 14. In the figure, an example in which the load detector 55 is provided on the upper and lower tie bars 14 is shown. The load detector 55 is constituted by, for example, a sensor for detecting the amount of elongation of the tie bars 14. The load detected by the load detector 55 is sent to the control unit 60. [ However, the control unit 60 is omitted in FIG. 2 for the sake of convenience.

Next, the operation of the mold clamping apparatus 10 will be described.

The mold closing process is controlled by the mold opening / closing processing unit 61 of the control unit 60. 2, the mold opening / closing processing unit 61 supplies a current to the coil 35. In the state shown in Fig. Subsequently, the linear motor 28 is driven, the movable platen 12 is advanced, and the movable mold 16 comes into contact with the stationary mold 15 as shown in FIG. 1. At this time, a gap delta is formed between the rear platen 13 and the attracting plate 22, that is, between the electromagnet 49 and the attracting portion 51. [ However, the force required for mold closing is sufficiently small as compared with the mold clamping force.

Then, the mold-clamping processing section 62 of the control section 60 controls the mold-clamping process. The mold clamping processing unit 62 supplies current to the coil 48 to suck the attracting unit 51 by the attracting force of the electromagnet 49. [ As a result, the clamping force is transmitted to the movable platen 12 via the suction plate 22 and the center rod 39 to perform the mold clamping. When the clamping force is changed, such as at the start of clamping, the clamping processing unit 62 is a normal clamping force necessary for generating a target clamping force to be obtained by the change, that is, a target clamping force in a steady state. The value of the current is controlled to be supplied to the coil 48.

However, the mold clamping force is detected by the load detector 55. The detected mold clamping force is sent to the control unit 60. In the control unit 60, the current supplied to the coil 48 is adjusted so that the mold clamping force becomes the set value, and the feedback control is performed. In the meantime, molten resin is injected from the injection nozzle 18 in the injection apparatus 17, and is filled in the cavity of the mold apparatus 19.

When the resin in the cavity space is cooled and solidified, the mold opening / closing processor 61 controls the mold opening process. The mold clamping processing unit 62 stops the supply of current to the coil 48 in the state of Fig. Thereby, the linear motor 28 is driven, the movable platen 12 is retracted, and as shown in FIG. 2, the movable mold 16 is placed in the retreat limit position, and mold opening is performed.

In the illustrated example, however, the mold thickness adjusting mechanism 44 is provided on the rear side of the suction plate 22. The mold thickness adjusting mechanism 44 is a mechanism for adjusting the gap δ in correspondence with the thickness of the mold apparatus 19. For example, the mold thickness adjusting mechanism 44 varies the position of the center rod 39 with respect to the suction plate 22 by a mold thickness adjusting motor (not shown). As a result, the position of the center rod 39 relative to the suction plate 22 is adjusted, and the positions of the suction plate 22 relative to the stationary platen 11 and the movable platen 12 are adjusted to optimize the gap δ. Can be set to That is, the mold thickness is adjusted by changing the relative positions of the movable platen 12 and the suction plate 22.

Hereinafter, the characteristic configuration of the present invention will be described with reference to FIG. 3 and subsequent figures.

3 is a perspective view showing the rear platen 13 according to one embodiment (Example 1) of the present invention. FIG. 4: shows several principal cross sections of the rear platen 13, FIG. 4 (A) is sectional drawing along the line A-A of FIG. 3, and FIG. 4 (B) is the line B- of FIG. It is sectional drawing along B, and FIG. 4 (C) is sectional drawing along the line C-C of FIG. 5 is a diagram illustrating an example of another shape of the key groove 47a. 3 and 4, the arrows h and V represent the left and right directions (horizontal direction) and the vertical direction (vertical direction) of the rear platen 13, respectively. However, since these directions change depending on the installation state (direction) of the injection molding machine, they are only for convenience. Further, arrow f indicates the front of the rear platen 13.

The rear platen 13 may be made of an electronic laminated steel sheet. In addition, an electronic laminated steel sheet may be formed by laminating | stacking the thin plate (steel plate) which consists of ferromagnetic bodies through an insulating layer. Alternatively, the electronic laminated steel sheet may be formed by laminating a steel sheet on which an insulating layer is formed. In the example shown in FIG. 3, the steel plate is laminated | stacked along the left-right direction (arrow h) of the rear platen 13. As shown in FIG. The rear platen 13 may be formed by integrating a plurality of electronic laminated steel sheets. For example, in the example shown in FIG. 3, the rear platen 13 is comprised integrally with four electronic laminated steel sheets divided | segmented into two lines X1 of the up-down direction set corresponding to the square hole 41. As shown in FIG. . However, the number and divisional aspects (such as division direction) of the electronic laminated steel sheet for integration are arbitrary. For example, in the example shown in FIG. 3, although divided into the up-down direction (arrow V), you may divide into the left-right direction (arrow h). As described above, when the rear platen 13 is formed by integrating a plurality of electronic laminated steel sheets, the rear platen 13 having a relatively large physique can be configured with one laminated steel sheet. In addition, the some electronic laminated steel sheet is integrated by the embedding member 90 mentioned later.

On the rear end surface of the rear platen 13, as shown in FIG. 3, the groove 45 is formed in the pattern which becomes a rectangular shape when it sees from a plane right angle. However, the inner convex part surrounded by the groove 45 forms the core 46.

On the front end surface of the rear platen 13, as shown in FIG. 3 and FIG. 4, the key groove 47a is formed. The key groove 47a may extend in any direction, but is preferably formed in an aspect extending in the lamination direction of the electronic laminated steel sheet from the viewpoint of manufacturability. That is, the key groove 47a is preferably formed in an aspect extending in the direction perpendicular to the steel sheet of the electronic laminated steel sheet. As shown in FIG. 3 and FIG. 4, the key groove 47a may extend linearly at the back end surface.

In the example shown in FIG. 3, the cross-sectional shape of the key groove 47a is trapezoid (wedge-shaped) whose inlet side (surface side) becomes a short side, In this case, the surface corresponding to a trapezoidal inclined side is calculated. The branch portion 47b (see Fig. 4A) is constituted. However, the cross-sectional shape of the key groove 47a may be any shape in which the bottom side is wider than the inlet side and has the locking portion 47b. For example, as shown in FIG. 5 (A), the key groove 47a may be a T-shape which widens the bottom side, and may be an L-shape which widens the bottom side, as shown in FIG. 5 (B).

FIG. 6: is a perspective view which shows an example of the fitting member 90 fitted in the key groove 47a of the rear platen 13 shown in FIG.

The fitting member 90 is formed of a material having high strength and rigidity such as metal. The fitting member 90 has a shape that is fitted into the key groove 47a of the rear platen 13 substantially without a gap. That is, the cross-sectional shape of the fitting member 90 corresponds to the cross-sectional shape of the key groove 47a. That is, in the illustrated example, the cross-sectional shape of the fitting member 90 is trapezoidal (wedge shaped). However, the cross-sectional shape of the fitting member 90 may be a shape slightly smaller than the cross-sectional shape of the key groove 47a (for example, a reduced shape similar to each other) in order to enable the slide type insertion described later. In addition, the fitting member 90 is preferably extended in a length substantially equal to the length of the longitudinal direction (arrow h) of the key groove 47a.

The fitting member 90 is inserted into the key groove 47a of the rear platen 13 from the end side in the left and right direction of the rear platen 13 and is fitted in a sliding manner. At this time, the fitting member 90 may be attached to the electronic laminated steel sheet molded into a predetermined shape. For example, when the rear platen 13 is constituted of a plurality of laminated electronic steel sheets as described above, the fitting member 90 is inserted into the corresponding key groove 47a of the plurality of laminated electronic steel sheets. In this case, the fitting member 90 can complete the positioning function between the plurality of laminated steel sheets. That is, the plurality of electronic laminated steel sheets can be integrated in a desired positional relationship with respect to each other via the fitting member 90. In addition, since the fitting member 90 is coupled to the tie bar 14, the plurality of electronic laminated steel sheets can be integrated in the desired positional relationship with respect to the tie bar 14 through the fitting member 90. . However, the electronic laminated steel sheet which comprises the rear platen 13 may be integrated after attaching each steel plate to the fitting member 90. In this case, for example, even when the rear platen 13 is composed of one electronic laminated steel sheet, the fitting member 90 can fulfill the function of positioning each steel sheet.

FIG. 7: is sectional drawing which removed only the main part related to the key groove 47a and the fitting member 90 of the rear platen 13 in an injection molding machine.

As shown in FIG. 7, the tie bar 14 is engaged with the fitting member 90. This coupling mode may be any mode including a bolt coupling or the like. Accordingly, the tie plate 14 is coupled to the rear platen 13 via the fitting member 90. In other words, the rear platen 13 is suspended in the suction direction by the tie bar 14 through the fitting member 90. Thereby, the shear force and bending stress which may generate | occur | produce in the rear platen 13 can be reduced.

By the way, since the rear platen 13 adsorbs the adsorption part 51 at the time of the clamping process, the rear platen 13 receives the reaction force, and as shown by arrow P in FIG. Receive. This tensile force acts on the rear platen 13 in the direction of drawing from the fitting member 90 coupled to the tie bar 14. In this regard, according to the present embodiment, since the fitting member 90 is fitted into the key groove 47a having the locking portion 47b, the rear platen 13 is fitted with the fitting member ( 90 can be prevented from escaping.

FIG. 8: is a figure which shows an example of the fall prevention plate material 92 which may be attached to the cross section of the rear platen 13. As shown in FIG.

On the cross section of the left-right direction (arrow h) of the rear platen 13, as shown in FIG. 8, the fall prevention which prevents a fall of the left-right direction of the fitting member 90 from the rear platen 13 is prevented. The plate 92 may be attached. The fall prevention plate material 92 may be fixed to the rear platen 13 (electromagnetic laminated steel sheet) by welding or the like. The fall prevention board | plate material 92 functions to block the left-right opening of the key groove 47a of the rear platen 13, and to prevent the fall-out of the insertion member 90 from the rear platen 13 in the left-right direction. To complete. However, in the illustrated example, the fall prevention plate material 92 has the same shape as the steel plate constituting the cross section in the left and right directions of the rear platen 13, but at least the key groove 47a of the rear platen 13 is at least. Any shape may be used as long as it is partially blocked to complete the above anti-separation function. In addition, in the example shown, the fall prevention board | plate material 92 is provided in the both end surfaces of the rear platen 13 in the left-right direction, but may be provided only in one end surface. In this case, preferably, the fitting member 90 is fixed with respect to the fall prevention board | plate material 92 provided only in one end surface.

Fig. 9 is a perspective view showing the rear platen 130 according to another embodiment (Example 2) of the present invention. FIG. 10: shows several principal cross sections of the rear platen 130, FIG. 10 (A) is sectional drawing along the line A-A of FIG. 9, and FIG. 10 (B) is the line B- of FIG. It is sectional drawing along B, and FIG. 10 (C) is sectional drawing along the line C-C of FIG.

The rear platen 130 according to the second embodiment differs mainly in that two poles are formed and multipolarized with respect to the rear platen 13 according to the first embodiment described above. Below, only the difference with Example 1 mentioned above is mainly demonstrated, About the structure which may be the same as Example 1 mentioned above, the same reference numeral is attached | subjected and description is abbreviate | omitted.

In the example shown in FIG. 9, the rear platen 130 has a rectangular shape when the two sets of grooves 45A and 45B in which coils (not shown) are accommodated, respectively, in response to multipolarization (bipolarization). It is formed in a shape. However, each convex portion of the enclosed inner side formed by the grooves 45A and 45B forms two sets of cores 46A and 46B. However, the formation patterns of the grooves 45A and 45B are various, and the number of poles is also arbitrary.

The rear platen 130 may be made of an electronic laminated steel sheet similarly to the rear platen 13. The rear platen 130 may be formed by integrating a plurality of electronic laminated steel sheets. For example, in the example shown in FIG. 9, the rear platen 130 integrates eight electronic laminated steel sheets divided | segmented into two lines X1, respectively up and down and left and right set corresponding to the square hole 41, Consists of. According to this divisional aspect, a plurality of electronic laminated steel sheets can be formed by the steel plate of the same shape, and it is advantageous in manufacture. For example, in the example shown in FIG. 9, four electrical laminated steel sheets of four corners can be manufactured by the combination of the steel plates of the same shape, and it is to each set of electronic laminated steel sheets which oppose the square hole 41 between them. Also, it can manufacture with the steel plate of the same shape, respectively. However, the number and divisional aspects of the laminated steel sheet for integration are arbitrary. In addition, in the front end surface of the rear platen 130, the key groove 47a is formed similarly to the rear platen 13. As shown in FIG. In the key groove 47a, the fitting member 90 (refer FIG. 6) is fitted similarly to Example 1 mentioned above.

Even when the rear platen 130 which realizes such multipolarization is used, the same effects as those of the first embodiment described above can be obtained. In particular, in the case of performing multipolarization, the necessity of integrally configuring the rear platen 130 with a plurality of electronic laminated steel sheets becomes high (and the number of electronic laminated steel sheets may increase). The positioning function by the fitting member 90 functions more effectively. In addition, when dividing an electronic laminated steel sheet into plural while making it multipolar, the width | variety of an electronic laminated steel sheet can be largely reduced. In addition, the thickness of the back yoke portion can also be reduced due to the effect of multipolarization, whereby the electronic laminated steel sheet can be further downsized.

However, also in the present Example 2, the fall prevention plate material (refer to the fall prevention plate material 92 of FIG. 8) may be attached to the cross section of the rear platen 130 similarly to Example 1 mentioned above.

FIG. 11 is a view showing another example of the coupling mode between the fitting member 90 and the tie bar 14, and the key groove 47a and the fitting member 90 of the rear platen 130 in the injection molding machine. This is a cross-sectional view of only the main parts involved.

In the example shown in FIG. 11, two fitting members 90 are provided corresponding to the key groove 47a of two rows. The two fitting members 90 are coupled to each other via the connecting member 94. The connecting member 94 may be fixed to the two fitting members 90 by, for example, a bolt or the like, or may be integrally formed with the two fitting members 90. The connecting member 94 is formed of a material having high strength and rigidity such as metal, similarly to the fitting member 90. The tie bar 14 is coupled to the connecting member 94. As a result, the end portion on the rear platen 130 side of the tie bar 14 is coupled to the fitting member 90 via the connecting member 94. In this way, the two fitting members 90 are coupled to the two fitting members 90 and through the one connecting member 94 which integrates the two fitting members 90, the tie bar ( 14) may be fixed.

In the example shown in FIG. 11, the connecting member 94 is applied to the rear platen 130 according to the second embodiment. However, the connecting member 94 is similar to the first embodiment described above. May be applied to the rear platen 13. However, the number of the fitting members 90 which the connection member 94 connects is arbitrary, and one connection member 94 may connect three or more fitting members 90 to it. In addition, the connecting member 94 may be provided with respect to one fitting member 90 as an auxiliary member.

FIG. 12 is a view showing another application example of the fitting member 90, and is a cross-sectional view of only the recesses related to the key groove 22a and the fitting member 90 of the suction plate 22 in the injection molding machine. However, the application example shown in FIG. 12 can also be used independently, and can also be used in combination with Example 1 or Example 2 mentioned above.

In the application example shown in FIG. 12, in the adsorption plate 22, the key groove 22a is formed in the same aspect as the key groove 47a of the rear platen 13 according to the first embodiment described above. The key groove 22a is formed on the surface of the mold thickness adjusting mechanism 44 side in the suction plate 22. The shape and the like of the key groove 22a may be the same as the key groove 47a of the rear platen 13 according to the first embodiment described above. In the same aspect as Example 1 mentioned above, the fitting member 90 is inserted in the key groove 22a, and it slides in the key groove 22a. However, the adsorption plate 22 may be provided with a fall prevention plate material (refer to the fall prevention plate material 92 of FIG. 8) in the end surface of the side by which the key groove 22a is opened similarly to Example 1 mentioned above. Similarly, the adsorption plate 22 may be formed by integrating a plurality of electronic laminated steel sheets.

The fitting member 90 may be fixed and supported by a member constituting the mold thickness adjusting mechanism 44. For example, in the example shown in FIG. 12, the mold thickness adjusting mechanism 44 meshes with the gear 44a rotated by a mold thickness adjusting motor (not shown) and the screw 43 of the center rod 39. A mold thickness adjusting rotating portion 44c coupled to the 44a (rotating with the gear 44a) to linearly move (position) the center rod 39 by the rotational movement thereof, and a mold thickness adjusting rotating portion 44c. ), A support member 44b for supporting), and the fitting member 90 is fixed and supported to the support member 44b. However, the coupling mode between the supporting member 44b and the fitting member 90 may be any aspect including coupling using a bolt. In addition, the structure of the mold thickness adjusting mechanism 44 shown in FIG. 12 is an example, and the mold thickness adjusting mechanism 44 may be implement | achieved with another structure.

Fig. 13 is a sectional view showing a main portion of the rear platen 131 according to another embodiment (Example 3) of the present invention. However, the contents of this embodiment can also be applied to the suction plate 22.

As shown in FIG. 13, the fitting member 90 has the flow path hole 91 of a temperature control fluid. The flow path hole 91 penetrates through the fitting member 90, and extends in parallel with the lamination direction of an electronic laminated steel sheet. Since the temperature control fluid flows inside the fitting member 90, unlike the case where the through hole penetrating the laminated electronic sheet in the lamination direction becomes a flow path, the temperature control fluid does not leak from between the steel sheets. In addition, since the temperature control fluid does not directly contact the laminated electronic steel sheet, corrosion of the laminated electronic steel sheet can be prevented.

The temperature control fluid exchanges heat with the electromagnetic laminated steel sheet, thereby temperature regulating the electronic laminated steel sheet. The temperature control fluid may be a coolant such as cooling water or air. The coolant suppresses overheating of the coil 48 of the electromagnet 49 by cooling the electromagnetic laminated steel sheet. However, the temperature control fluid may be fruit such as hot water.

However, when the rear platen 131 has a plurality of fitting members 90, the flow path hole 91 may be formed in the at least one fitting member 90.

The fitting member 90 may be inserted into the key groove 47a of the electronic laminated steel sheet, and may be fixed to the key groove 47a by, for example, a cooling fit or a heat fit.

In the cooling fitting, for example, a key groove 47a of an electronic laminated steel sheet having a higher temperature (for example, room temperature) than the insertion member 90 is cooled by shrinking the insertion member 90 with a refrigerant such as dry ice or liquid nitrogen. Insert it in Then, when the temperature of the fitting member 90 returns to room temperature, the fitting member 90 expands, and the outer wall of the fitting member 90 is tightened to the inner wall of the key groove 47a.

In the heat fitting, the electromagnetic laminated steel sheet is heated to increase the cross-sectional area of the key groove 47a of the electronic laminated steel sheet, and then the insertion member 90, which is lower than the electronic laminated steel sheet (for example, room temperature), is inserted into the key groove 47a. do. After that, when the temperature of the electromagnetic laminated steel sheet returns to room temperature, the cross-sectional area of the key groove 47a is reduced, and the outer wall of the fitting member 90 is tightened to the inner wall of the key groove 47a.

The gap between the inner wall of the keyway 47a and the outer wall of the fitting member 90 decreases due to the cooling fit or the heat fit, so that the contact thermal resistance is lowered, whereby the temperature control efficiency of the electronic laminated steel sheet is improved.

A metal sheet 93 as a heat transfer member may be interposed between the inner wall of the key groove 47a and the outer wall of the fitting member 90. It is preferable that the hardness of the metal sheet 93 is lower (flexible) than the hardness of the fitting member 90. The hardness of the metal sheet 93 is measured by the indentation hardness test method before the cooling fit or the heat fit. As the indentation hardness test method, for example, Brinell hardness test method (JISZ2243) is used. For example, when the metal forming the fitting member 90 is stainless steel, the metal of the metal sheet 93 is copper (Cu), aluminum (Al), tin (Sn), lead (Pb), silver (Ag). , Indium (In), or an alloy containing any one or more thereof is used. In view of flexibility and cost, indium or an indium alloy is particularly suitably used.

In the cooling fitting, the metal sheet 93 is wound around the outer wall of the fitting member 90, and the metal sheet 93 and the fitting member 90 are inserted into the key groove 47a of the electronic laminated steel sheet. In the cooling fitting, at least one of the fitting member 90 and the metal sheet 93 is cooled with a refrigerant before insertion into the key groove 47a.

For example, when only the fitting member 90 is cooled with a refrigerant before insertion into the key groove 47a, the temperature of the insertion member 90 returns to room temperature after insertion into the key groove 47a, so that the inner wall of the key groove 47a is separated from the inner wall of the key groove 47a. The metal sheet 93 is sandwiched between the outer walls of the fitting member 90, thereby deforming thinly. The deformation of the metal sheet 93 may be either elastic deformation or plastic deformation. Since the metal sheet 93 is formed of a metal that is more flexible than the fitting member 90, the metal sheet 93 is deformed to absorb a deviation of the gap between the inner wall of the key groove 47a and the outer wall of the fitting member 90 to fill the gap, Both inner walls of the 47a and the outer walls of the fitting member 90 are in close contact with each other.

In addition, when only the metal sheet 93 is cooled by the refrigerant before insertion into the key groove 47a to reduce the thickness of the metal sheet 93, the temperature of the metal sheet 93 returns to room temperature after the insertion into the key groove 47a. Then, the thickness of the metal sheet 93 becomes thick, so that the metal sheet 93 is sandwiched between the inner wall of the key groove 47a and the outer wall of the fitting member 90. The metal sheet 93 is deformed to absorb the deviation of the gap between the inner wall of the key groove 47a and the outer wall of the fitting member 90 so as to fill the gap, and the inner wall of the key groove 47a and the fitting member 90 It adheres to both sides of the outer wall.

In the heat fitting, the metal sheet 93 is wound around the outer wall of the fitting member 90, and the metal sheet 93 and the fitting member 90 are inserted into the key groove 47a of the heated electrical laminated steel sheet. After that, when the temperature of the electronic laminated steel sheet returns to room temperature, the cross-sectional area of the key groove 47a is reduced, and the metal sheet 93 is sandwiched between the inner wall of the key groove 47a and the outer wall of the fitting member 90. The metal sheet 93 is deformed to absorb the deviation of the gap between the inner wall of the key groove 47a and the outer wall of the fitting member 90 so as to fill the gap, and the inner wall of the key groove 47a and the fitting member 90 It adheres to both sides of the outer wall.

In this way, in both the cooling fit and the heat fit, the metal sheet 93 is deformed to absorb the deviation of the gap between the inner wall of the key groove 47a and the outer wall of the fitting member 90 to fill the gap, It adheres to both the inner wall of 47a) and the outer wall of the fitting member 90. Therefore, the contact thermal resistance is further lowered, whereby the temperature control efficiency of the electronic laminated steel sheet is further improved. In addition, when absorbing the deviation of the gap, the flexible metal sheet 93 is selectively deformed, so that local deformation of the rigid fitting member 90 is suppressed, so that damage to the fitting member 90 is reduced.

In addition, although the heat transfer member of FIG. 13 is formed with metal, what is necessary is just to have heat conductivity higher than air, and may be formed with resin. In addition, although the heat transfer member is a sheet form, a ring form may be sufficient.

In addition, although the fitting member 90 of FIG. 13 is fixed to the key groove 47a by a cooling fit or a heat fit, the fixing method is not limited to a cooling fit and a heat fit. For example, the insertion member 90 is inserted into the key groove 47a, the heated molten resin is poured into the gap between the inner wall of the key groove 47a and the outer wall of the insertion member 90, and the molten resin is cooled and solidified. How to do it. In this case, a resin layer as a heat transfer member is interposed between the inner wall of the key groove 47a and the outer wall of the fitting member 90. The hardness of the resin layer is lower than the hardness of the fitting member 90.

In addition, in FIG. 13, although the heat transfer member is interposed between the inner wall of the key groove 47a and the outer wall of the fitting member 90, the heat transfer member may be omitted. That is, the inner wall of the key groove 47a and the outer wall of the fitting member 90 may be in direct contact with each other by cooling fitting or heating fitting.

14 is a diagram illustrating a modification of FIG. 13. In FIG. 14, the same code | symbol is attached | subjected about the same structure as FIG. 13, and description is abbreviate | omitted.

In Fig. 13, the flow path hole 91 is formed in the fitting member 90. In Fig. 14, the flow path groove 95 of the temperature control fluid is formed in the front end surface of the fitting member 90. Is different in that the lid member 97 is fixed to the front end face of the fitting member 90.

The lid member 97 is fixed to the fitting member 90 with a bolt or the like. A seal member may be interposed between the fitting member 90 and the lid member 97 to prevent leakage of the temperature control fluid. The order of the fixing of the lid member 97 and the fitting member 90 and the insertion of the fitting member 13 into the key groove 47a may be any first.

The tie bar 14 may be fixed to the lid member 97.

However, when the rear platen has a plurality of fitting members 90, the flow path grooves 95 may be formed in the at least one fitting member 90.

Fig. 15 is a sectional view showing a main portion of the rear platen 132 according to still another embodiment (Example 4) of the present invention. However, the contents of the present embodiment can be combined with the contents of the first to third embodiments, and can also be applied to the adsorption plate 22.

The rear platen 132 of FIG. 15 differs from the rear platen 13 of FIG. 7 in that it has a reinforcing member 98 for reinforcing the electronic laminated steel sheet. Hereinafter, it demonstrates centering around a difference.

The reinforcement member 98 is fixed to the side surface of an electronic laminated steel sheet, and / or the front end surface of an electronic laminated steel sheet, etc., for example as shown in FIG. The reinforcing member 98 extends in parallel with the lamination direction of the electromagnetic laminated steel sheet and is connected to each steel sheet of the electronic laminated steel sheet by welding or the like.

The reinforcing member 98 is formed with a flow path hole 99 for the temperature control fluid. The flow path hole 99 extends in parallel with the lamination direction of the electronic laminated steel sheet. Since the temperature control fluid flows inside the reinforcing member 98, unlike the case where the through hole penetrating the electronic laminated steel sheet in the lamination direction becomes a flow path, the temperature control fluid does not leak from between the steel sheets. In addition, since the temperature control fluid does not directly contact the laminated electronic steel sheet, corrosion of the laminated electronic steel sheet is prevented.

The temperature control fluid exchanges heat with the electromagnetic laminated steel sheet, thereby temperature regulating the electronic laminated steel sheet. The temperature control fluid may be a coolant such as cooling water or air. The coolant suppresses overheating of the coil 48 of the electromagnet 49 by cooling the electromagnetic laminated steel sheet. In order to improve the cooling efficiency, the thermostatic fluid may be fruit such as hot water.

The tie bar 14 may be fixed to the reinforcing member 98 fixed to the front end surface of the electronic laminated steel sheet with a bolt or the like.

15, the flow path hole 99 is formed in the reinforcement member 98. However, similarly to FIG. 14, the flow path groove of the temperature control fluid is formed in the reinforcement member 98. The cover member may be fixed to the surface where the flow path groove is formed.

In addition, although the flow path (flow path hole, flow path groove) of the temperature control fluid of this embodiment is formed in the reinforcement member 98, it is formed in the connection member 94 shown in FIG. 11, the support member 44b shown in FIG. 12, etc., for example. You may be.

However, when the rear platen has a plurality of reinforcing members 98, a flow path hole or a flow path groove may be formed in the at least one reinforcing member 98.

Fig. 16 is a sectional view showing the main portion of the rear platen 133 according to still another embodiment (Example 5) of the present invention. In FIG. 16, the same code | symbol is attached | subjected to the structure same as FIG. 13 (Example 3), and description is abbreviate | omitted. In addition, the content of this embodiment can also be applied to the suction plate 22.

As shown in FIG. 16, the insertion member 90 is provided with the insertion hole 72 as an insertion part into which the flow path tube 71 is inserted. The flow path tube 71 may pass through the fitting member 90. One flow path tube 71 is provided for each fitting member 90, but a plurality of flow path tubes 71 may be provided. However, when the rear platen 133 has the some fitting member 90, the flow path tube 71 should just be inserted in the insertion part of the at least 1 insertion member 90. As shown in FIG.

The flow path tube 71 is a cylindrical tube, for example, and has a flow path of a thermoregulating fluid therein. Since the temperature control fluid flows inside the flow path tube 71, and the temperature control fluid does not directly contact the insertion member 90, corrosion of the insertion member 90 can be prevented.

The temperature control fluid exchanges heat with the rear platen 133 to regulate the temperature of the rear platen 133. The temperature control fluid may be a coolant such as cooling water or air. The coolant suppresses overheating of the coil 48 of the electromagnet 49 by cooling the rear platen 133. However, the temperature control fluid may be fruit such as hot water.

The flow path tube 71 may be inserted into the insertion hole 72 of the fitting member 90 and fixed to the insertion hole 72 by, for example, a cooling fit or a heat fit. The fixing of the flow path tube 71 in the insertion hole 72 of the fitting member 90 and the fixing of the fitting member 90 in the key groove 47a of the electronic laminated steel sheet may be either first or simultaneously. It may be.

In the cooling fitting, the flow path tube 71 is cooled with a coolant such as dry ice or liquid nitrogen to reduce the outer diameter of the flow path tube 71, and then a fitting member that is higher in temperature than the flow path tube 71 (for example, room temperature). The flow path tube 71 is inserted into the insertion hole 72 of 90. After that, when the temperature of the flow path tube 71 returns to room temperature, the flow path tube 71 is expanded and the outer wall of the flow path tube 71 is tightened to the inner wall of the insertion hole 72.

In the heat fitting, the insertion member 90 is heated to increase the diameter of the insertion hole 72 of the insertion member 90, and then the flow path tube that is lower than the insertion member 90 (for example, room temperature). 71 is inserted into the insertion hole 72. Then, when the temperature of the fitting member 90 returns to room temperature, the diameter of the insertion hole 72 is contracted and the outer wall of the flow path tube 71 is tightened to the inner wall of the insertion hole 72.

The gap between the inner wall of the insertion hole 72 and the outer wall of the flow path tube 71 decreases due to the cooling fit or the heat fit, and the contact heat resistance decreases, so that the temperature control efficiency of the rear platen 133 is good. Lose. The flow path tube 71 may be comprised by the cylindrical tube, and the insertion hole 72 may have circular cross section shape so that the outer wall of the flow path tube 71 may be uniformly tightened by a cooling fit or a heat fit.

A metal sheet 73 as a heat transfer member may be interposed between the inner wall of the insertion hole 72 of the fitting member 90 and the outer wall of the flow path tube 71. It is preferable that the hardness of the metal sheet 73 is lower (flexible) than the hardness of the flow path tube 71.

In the cooling fitting, the metal sheet 73 is wound around the outer wall of the flow path tube 71, and the metal sheet 73 and the flow path tube 71 are inserted into the insertion hole 72 of the fitting member 90. In the cooling fitting, at least one of the flow path tube 71 and the metal sheet 73 is cooled with a refrigerant before insertion into the insertion hole 72.

For example, when only the flow path tube 71 is cooled by the refrigerant before insertion into the insertion hole 72, the temperature of the flow path tube 71 returns to room temperature after insertion into the insertion hole 72, and the flow path tube 71 expands. As a result, the metal sheet 73 is sandwiched between the inner wall of the insertion hole 72 and the outer wall of the flow path tube 71 so as to be thinly deformed. The deformation of the metal sheet 73 may be either elastic deformation or plastic deformation. Since the metal sheet 73 is made of a metal which is more flexible than the flow path tube 71, the metal sheet 73 is deformed so as to absorb the deviation of the gap between the inner wall of the insertion hole 72 and the outer wall of the flow path tube 71 to fill the gap. The inner wall of 72 and the outer wall of the flow path tube 71 are in close contact with both.

In addition, when only the metal sheet 73 is cooled by the refrigerant before insertion into the insertion hole 72 to make the thickness of the metal sheet 73 thin, the temperature of the metal sheet 73 after the insertion into the insertion hole 72 is room temperature. Returning to this, the thickness of the metal sheet 73 becomes thick, and the metal sheet 73 is sandwiched between the inner wall of the insertion hole 72 and the outer wall of the flow path tube 71. The metal sheet 73 is deformed to absorb the deviation of the gap between the inner wall of the insertion hole 72 and the outer wall of the flow path tube 71 to fill the gap, so that the inner wall of the insertion hole 72 and the flow path tube 71 are filled. It is in close contact with both sides of the outer wall.

In the heat fitting, the metal sheet 73 is wound around the outer wall of the flow path tube 71, and the metal sheet 73 and the flow path tube 71 are inserted into the insertion hole 72 of the heated fitting member 90. . Then, when the temperature of the fitting member 90 returns to room temperature, the diameter of the insertion hole 72 is contracted, and the metal sheet 73 is interposed between the inner wall of the insertion hole 72 and the outer wall of the flow path tube 71. Is fitted. The metal sheet 73 is deformed so as to absorb the deviation of the gap between the inner wall of the insertion hole 72 and the outer wall of the flow path tube 71 to fill the gap, so that the inner wall of the insertion hole 72 and the flow path tube 71 are separated. It adheres to both sides of the outer wall.

In this way, in both the cooling fit and the heat fit, the metal sheet 73 is deformed so as to absorb the deviation of the gap between the inner wall of the insertion hole 72 and the outer wall of the flow path tube 71 so as to fill the gap. It adheres to both the inner wall of the hole 72 and the outer wall of the flow path tube 71. Therefore, the contact thermal resistance is further lowered, whereby the temperature regulation efficiency of the rear platen 133 is further improved. In addition, when absorbing the deviation of the gap, the flexible metal sheet 73 is selectively deformed, so that local deformation of the rigid flow path tube 71 is suppressed, so that damage to the flow path tube 71 is reduced.

In addition, although the heat transfer member of this Example is formed with a metal, what is necessary is just to have a heat conductivity higher than air, and may be formed with resin. In addition, although the heat transfer member is a sheet form, a ring form may be sufficient.

However, the flow path tube 71 of the present embodiment is fixed to the insertion hole 72 by cooling fitting or heating fitting, but the fixing method is not limited to cooling fitting and heating fitting. For example, the flow path tube 71 is inserted into the insertion hole 72, the heated molten resin is poured into the gap between the inner wall of the insertion hole 72 and the outer wall of the flow path tube 71, and the molten resin is cooled. And solidification methods. In this case, a resin layer as a heat transfer member is interposed between the inner wall of the insertion hole 72 and the outer wall of the flow path tube 71. The hardness of the resin layer is lower than the hardness of the flow path tube 71.

In addition, in this embodiment, although the heat transfer member is interposed between the inner wall of the insertion hole 72 and the outer wall of the flow path tube 71, the heat transfer member may be omitted. That is, the inner wall of the insertion hole 72 and the outer wall of the flow path tube 71 may be in direct contact with each other by cooling fitting or heating fitting.

Fig. 17 is a sectional view showing the main portion of the rear platen 134 according to still another embodiment (Example 6) of the present invention. In FIG. 17, the same code | symbol is attached | subjected to the structure same as FIG. 13 (Example 3), and description is abbreviate | omitted. However, the contents of this embodiment can also be applied to the suction plate 22.

As shown in FIG. 17, the insertion member 90 is provided with the insertion groove 76 as an insertion part into which the flow path tube 75 is inserted. The flow path tube 75 may pass through the fitting member 90. One flow path tube 75 is provided for each fitting member 90, but a plurality of flow path tubes 75 may be provided. However, in the case where the rear platen 134 has a plurality of fitting members 90, the flow path tube 75 may be inserted into the insertion portion of the at least one fitting member 90.

The flow path tube 75 is, for example, a square tube pipe, and has a flow path of the temperature control fluid therein. Since the temperature control fluid flows inside the flow path tube 75, and the temperature control fluid does not directly contact the fitting member 90, corrosion of the fitting member 90 can be prevented.

The temperature control fluid exchanges heat with the rear platen 134 to temperature control the rear platen 134. The temperature control fluid may be a coolant such as cooling water or air. The coolant suppresses overheating of the coil 48 of the electromagnet 49 by cooling the rear platen 134. However, the temperature control fluid may be fruit such as hot water.

The flow path tube 75 may be inserted into the insertion groove 76 of the fitting member 90 and fixed to the insertion groove 76 by, for example, a cooling fit or a heat fit. The fixing of the flow path tube 75 in the insertion groove 76 of the fitting member 90 and the fixing of the fitting member 90 in the key groove 47a of the electronic laminated steel sheet may be either first or simultaneously. It may be.

In the cooling fitting, the flow path tube 75 is cooled and shrunk with a coolant such as dry ice or liquid nitrogen, and then the insertion groove 76 of the insertion member 90 that is hotter than the flow path tube 75 (for example, room temperature). ) Is inserted into the flow path tube (75). Then, when the temperature of the flow path tube 75 returns to room temperature, the flow path tube 75 expands and the inner wall (side wall) of which the outer wall of the flow path tube 75 opposes each other of the insertion groove 193 of a rectangular cross section is formed. Is tightened.

In the heat fitting, the insertion member 90 is heated to widen the groove width of the insertion groove 76 of the insertion member 90, and then the flow path tube that is lower than the insertion member 90 (for example, room temperature). 75) is inserted into the insertion groove (76). Then, when the temperature of the fitting member 90 returns to room temperature, the groove width of the insertion groove 76 is narrowed, and the flow path tube 75 is formed on the inner walls of the insertion grooves 76 having a rectangular cross section facing each other. The outer wall is tightened.

The gap between the inner wall of the insertion groove 76 and the outer wall of the flow path tube 75 decreases due to the cooling fit or the heat fit, and the contact heat resistance decreases, so that the temperature control efficiency of the rear platen 134 is good. Lose.

A metal sheet 77 as a heat transfer member may be interposed between the inner wall of the insertion groove 76 of the fitting member 90 and the outer wall of the flow path tube 75. It is preferable that the hardness of the metal sheet 77 is lower (flexible) than the hardness of the flow path tube 75.

In the cooling fitting, the metal sheet 77 is wound around the outer wall of the flow path tube 75, and the metal sheet 77 and the flow path tube 75 are inserted into the insertion groove 76 of the fitting member 90. In the cooling fitting, at least one of the flow path pipe 75 and the metal sheet 77 is cooled with a refrigerant before insertion into the insertion groove 76.

For example, when only the flow path tube 75 is cooled with a refrigerant before insertion into the insertion groove 76, after the insertion into the insertion groove 76, the temperature of the flow path tube 75 returns to room temperature so that the flow path tube 75 expands. As a result, the metal sheet 77 is sandwiched between the inner wall of the insertion groove 76 and the outer wall of the flow path tube 75, thereby deforming thinly. The deformation of the metal sheet 77 may be either elastic deformation or plastic deformation. Since the metal sheet 77 is formed of a metal that is more flexible than the flow path tube 75, the metal sheet 77 is deformed to absorb a deviation of the gap between the inner wall of the insertion groove 76 and the outer wall of the flow path tube 75, thereby filling the gap. It adheres to both the inner wall of the groove 76 and the outer wall of the flow path tube 75.

In addition, when only the metal sheet 77 is cooled by the refrigerant before insertion into the insertion groove 76 to reduce the thickness of the metal sheet 77, the temperature of the metal sheet 77 after the insertion into the insertion groove 76 is room temperature. Returning to this, the thickness of the metal sheet 77 becomes thick, so that the metal sheet 77 is sandwiched between the inner wall of the insertion groove 76 and the outer wall of the flow path tube 75. The metal sheet 77 is deformed to absorb the deviation of the gap between the inner wall of the insertion groove 76 and the outer wall of the flow path tube 75 to fill the gap, so that the inner wall of the insertion groove 76 and the flow path tube 75 are filled. It is in close contact with both sides of the outer wall.

In the heat fitting, the metal sheet 77 is wound around the outer wall of the flow path tube 75, and the metal sheet 77 and the flow path tube 75 are inserted into the insertion groove 76 of the heated insertion member 90. . Then, when the temperature of the fitting member 90 returns to room temperature, the groove width of the insertion groove 76 is narrowed, so that the metal sheet 77 between the inner wall of the insertion groove 76 and the outer wall of the flow path tube 75. ) Is inserted. The metal sheet 77 is deformed so as to absorb the deviation of the gap between the inner wall of the insertion groove 76 and the outer wall of the flow path tube 75 to fill the gap, so that the inner wall of the insertion groove 76 and the flow path tube 75 are separated. It adheres to both sides of the outer wall.

In this way, in both the cooling fit and the heat fit, the metal sheet 77 is deformed so as to absorb the deviation of the gap between the inner wall of the insertion groove 76 and the outer wall of the flow path tube 75 to fill the gap. It adheres to both the inner wall of the groove 76 and the outer wall of the flow path tube 75. Therefore, the contact thermal resistance is further lowered, whereby the temperature regulation efficiency of the rear platen 134 is further improved. In addition, when absorbing the deviation of the gap, the flexible metal sheet 77 is selectively deformed, so that local deformation of the rigid flow channel 75 is suppressed, so that damage to the flow path tube 75 is reduced.

In addition, although the heat transfer member of this Example is formed with a metal, what is necessary is just to have a heat conductivity higher than air, and may be formed with resin. In addition, although the heat transfer member is a sheet form, a ring form may be sufficient.

However, the flow path tube 75 of the present embodiment is fixed to the insertion groove 76 by cooling fitting or heating fitting, but the fixing method is not limited to cooling fitting and heating fitting. For example, the flow path tube 75 is inserted into the insertion groove 76, the heated molten resin is poured into the gap between the inner wall of the insertion groove 76 and the outer wall of the flow path tube 75, and the molten resin is cooled and solidified. How to do it. In this case, a resin layer as a heat transfer member is interposed between the inner wall of the insertion groove 76 and the outer wall of the flow path tube 75. The hardness of the resin layer is lower than the hardness of the flow path tube 75.

In addition, in this embodiment, although the heat transfer member is interposed between the inner wall of the insertion groove 76 and the outer wall of the flow path tube 75, the heat transfer member may be omitted. That is, the inner wall of the insertion groove 76 and the outer wall of the flow path tube 75 may be in direct contact with each other by cooling fitting or heating fitting.

18 is a cross-sectional view showing the main parts of the rear platen 135 according to yet another embodiment (Example 7) of the present invention. In FIG. 18, the same code | symbol is attached | subjected to the structure same as FIG. 15 (Example 4), and description is abbreviate | omitted. However, the contents of this embodiment can also be applied to the suction plate 22. In addition, the content of this embodiment can also be applied to the connecting member 94 shown in FIG. 11, the support member 44b shown in FIG.

As shown in FIG. 18, the reinforcement member 98 is provided with the insertion hole 82 as an insertion part into which the flow path tube 81 is inserted. The flow path tube 81 may pass through the reinforcing member 98. One flow path tube 81 is provided for each of the reinforcing members 98, but a plurality of flow path tubes 81 may be provided. However, when the rear platen 135 has a plurality of reinforcing members 98, the flow path tube 81 may be inserted into the insertion portion of the at least one reinforcing member 98.

The flow path tube 81 is a cylindrical tube, for example, and has a flow path of a thermostatic fluid therein. Since the temperature control fluid flows inside the flow path tube 81, and the temperature control fluid does not directly contact the reinforcement member 98, corrosion of the reinforcement member 98 can be prevented.

The temperature control fluid exchanges heat with the rear platen 135 to temperature control the rear platen 135. The temperature control fluid may be a coolant such as cooling water or air. The coolant suppresses overheating of the coil 48 of the electromagnet 49 by cooling the rear platen 135. However, the temperature control fluid may be fruit such as hot water.

The flow path tube 81 may be inserted into the insertion hole 82 of the reinforcing member 98 and fixed to the insertion hole 82 by, for example, a cooling fit or a heat fit. The fixing of the flow path tube 81 in the insertion hole 82 of the reinforcing member 98 and the fixing of the reinforcing member 98 to the laminated steel sheet may be either first.

In the cooling fitting, the flow path tube 81 is cooled with a coolant such as dry ice or liquid nitrogen to reduce the outer diameter of the flow path tube 81, and then a reinforcing member that is higher in temperature than the flow path tube 81 (for example, room temperature). The flow path tube 81 is inserted into the insertion hole 82 of 98. After that, when the temperature of the flow path tube 81 returns to room temperature, the flow path tube 81 expands and the outer wall of the flow path tube 81 is tightened to the inner wall of the insertion hole 82.

In the heat fit, the reinforcing member 98 is heated to increase the diameter of the insertion hole 82 of the reinforcing member 98, and then the flow path tube 81 that is lower than the reinforcing member 98 (for example, room temperature) is opened. Inserted into the insertion hole 82. Then, when the temperature of the reinforcing member 98 returns to room temperature, the diameter of the insertion hole 82 is contracted and the outer wall of the flow path tube 81 is tightened to the inner wall of the insertion hole 82.

The gap between the inner wall of the insertion hole 82 and the outer wall of the flow path tube 81 is reduced by the cooling fit or the heat fit, and the contact thermal resistance is lowered, so that the temperature control efficiency of the rear platen 135 is good. Lose. The flow path tube 81 may consist of a cylindrical tube so that the outer wall of the flow path tube 81 may be uniformly tightened by a cooling fit or a heat fit, and the insertion hole 82 may have a circular cross-sectional shape.

A metal sheet 83 as a heat transfer member may be interposed between the inner wall of the insertion hole 82 of the reinforcing member 98 and the outer wall of the flow path tube 81. It is preferable that the hardness of the metal sheet 83 is lower (flexible) than the hardness of the flow path tube 81.

In the cooling fitting, the metal sheet 83 is wound around the outer wall of the flow path tube 81, and the metal sheet 83 and the flow path tube 81 are inserted into the insertion hole 82 of the reinforcing member 98. In the cooling fitting, at least one of the flow path tube 81 and the metal sheet 83 is cooled with a refrigerant before insertion into the insertion hole 82.

For example, when only the flow path tube 81 is cooled by the refrigerant before insertion into the insertion hole 82, the temperature of the flow path tube 81 returns to room temperature after insertion into the insertion hole 82, and the flow path tube 81 expands. As a result, the metal sheet 83 is sandwiched between the inner wall of the insertion hole 82 and the outer wall of the flow path tube 81 to deform thinly. The deformation of the metal sheet 83 may be either elastic deformation or plastic deformation. Since the metal sheet 83 is formed of a metal which is more flexible than the flow path tube 81, the metal sheet 83 is deformed to absorb a deviation of the gap between the inner wall of the insertion hole 82 and the outer wall of the flow path tube 81 to fill the gap, thereby inserting the metal sheet 83. It adheres to both the inner wall of the hole 82 and the outer wall of the flow path tube 81.

In addition, in the case where only the metal sheet 83 is cooled with a refrigerant before the insertion into the insertion hole 82 and the thickness of the metal sheet 83 is reduced, the temperature of the metal sheet 83 after the insertion into the insertion hole 82 is room temperature. Returning to this, the thickness of the metal sheet 83 becomes thick, and the metal sheet 83 is sandwiched between the inner wall of the insertion hole 82 and the outer wall of the flow path tube 81. The metal sheet 83 is deformed so as to absorb a deviation of the gap between the inner wall of the insertion hole 82 and the outer wall of the flow path tube 81 to fill the gap, and thus, the inner wall of the insertion hole 82 and the flow path tube 81 of the metal sheet 83 are formed. It adheres to both sides of the outer wall.

In the heat fitting, the metal sheet 83 is wound around the outer wall of the flow path tube 81, and the metal sheet 83 and the flow path tube 81 are inserted into the insertion hole 82 of the heated reinforcing member 98. Then, when the temperature of the reinforcing member 98 returns to room temperature, the diameter of the insertion hole 82 is contracted so that the metal sheet 83 is formed between the inner wall of the insertion hole 82 and the outer wall of the flow path tube 81. Is fitted. The metal sheet 83 is deformed so as to absorb a deviation of the gap between the inner wall of the insertion hole 82 and the outer wall of the flow path tube 81 to fill the gap, so that the inner wall of the insertion hole 82 and the flow path tube 81 are filled. It is in close contact with both sides of the outer wall.

In this way, in both the cooling fit and the heat fit, the metal sheet 83 is deformed to absorb the deviation of the gap between the inner wall of the insertion hole 82 and the outer wall of the flow path tube 81 to fill the gap, thereby inserting it. It adheres to both the inner wall of the hole 82 and the outer wall of the flow path tube 81. Therefore, the contact thermal resistance is further lowered, whereby the temperature regulation efficiency of the rear platen 135 is further improved. In addition, when absorbing the deviation of the gap, the flexible metal sheet 83 is selectively deformed, so that local deformation of the rigid flow path tube 81 is suppressed, so that damage to the flow path tube 81 is reduced.

In addition, although the heat transfer member of this Example is formed with a metal, what is necessary is just to have a heat conductivity higher than air, and may be formed with resin. In addition, although the heat transfer member is a sheet form, a ring form may be sufficient.

However, the flow path tube 81 of the present embodiment is fixed to the insertion hole 82 by cooling fitting or heating fitting, but the fixing method is not limited to cooling fitting and heating fitting. For example, the flow path tube 81 is inserted into the insertion hole 82, the heated molten resin flows into the gap between the inner wall of the insertion hole 82 and the outer wall of the flow path tube 81, and the molten resin is cooled. And solidification methods. In this case, a resin layer as a heat transfer member is interposed between the inner wall of the insertion hole 82 and the outer wall of the flow path tube 81. The hardness of the resin layer is lower than the hardness of the flow path tube 81.

In the present embodiment, however, a heat transfer member is interposed between the inner wall of the insertion hole 82 and the outer wall of the flow path tube 81, but the heat transfer member may be omitted. That is, the inner wall of the insertion hole 82 and the outer wall of the flow path tube 81 may be in direct contact with each other by cooling fitting or heating fitting.

In the reinforcing member 98 of this embodiment, however, an insertion hole 82 as an insertion portion for inserting the flow path tube 81 is formed, but instead of the insertion hole, an insertion groove is formed as in the sixth embodiment of FIG. 17. You may be.

However, in the above-described embodiment, the "first fixing member" in the claims corresponds to the fixed platen 11, and the "first movable member" in the claims is the movable plate (12). The "second fixing member" in the claims corresponds to the rear platen 13, and the "second movable member" in the claims corresponds to the suction plate 22. [ However, as a modification, the electromagnet 49 may be provided on the suction plate 22 side, and the suction part may be provided on the rear platen 13 side. In this modification, the "second fixing member" may be a suction plate ( 22), the "second movable member" in the claims corresponds to the rear platen 13. In addition, in the above-mentioned embodiment, "home" in the claims corresponds to the key groove 47a and / or the key groove 22a.

As mentioned above, although preferred embodiment of this invention was described in detail, this invention is not limited to the above-mentioned embodiment, A various deformation | transformation and substitution are made to the above-mentioned embodiment, without deviating from the range of this invention. Can be added.

For example, in the above-described embodiment, the rear platens 13, 130, 131, 133, and 134 and the suction plate 22 are formed with a key groove 47a and a key groove 22a having a wider bottom side than the entrance side. However, instead of the key groove 47a and the key groove 22a, grooves having a cross-sectional shape other than a circular cross section may be formed. Also in this case, the fitting member 90 fitted into the groove can restrain the displacement of the rear platens 13, 130, 131, 133, 134 and the rotational direction of the suction plate 22, thereby positioning function. Can be accomplished.

In the above-described embodiment, the rear platens 13, 130, 131, 133, and 134 and the suction plate 22 are made of electronic laminated steel sheets, but the key groove 47a or the key groove 22a is formed. In the case of the structure which is not performed, you may be comprised by the integral structure of a casting. For example, when using the application example shown in FIG. 12 independently, the rear platen 13 may be comprised by the integral structure of a casting. In addition, when not using the application example shown in FIG. 12, the adsorption plate 22 may be comprised by the integral structure of a casting.

However, in the above-mentioned embodiment, although two fitting members 90 are provided corresponding to the two rows of key grooves 47a, the number of the key grooves 47a and the fitting members 90 is arbitrary.

With respect to the above description, the following paragraphs are disclosed further.

(Annex 1)

A first fixing member on which the stationary mold is mounted,

A second fixing member installed to face the first fixing member;

A first movable member on which the movable mold is mounted,

And a second movable member connected to the first movable member and moving together with the first movable member,

The second fixing member and the second movable member constitute a clamping force generating mechanism for generating a clamping force by suction force by an electromagnet,

At least one of the second fixing member and the second movable member constituting the clamping force generating mechanism has a laminated steel sheet formed by laminating a plurality of steel sheets and a reinforcing member for reinforcing the laminated steel sheet,

The reinforcing member, characterized in that it has a flow path of the temperature control fluid, injection molding machine.

(Annex 2)

A first fixing member on which the stationary mold is mounted,

A second fixing member installed to face the first fixing member;

A first movable member on which the movable mold is mounted,

And a second movable member connected to the first movable member and moving together with the first movable member,

The second fixing member and the second movable member constitute a clamping force generating mechanism for generating a clamping force by suction force by an electromagnet,

At least one of the second fixing member and the second movable member constituting the clamping force generating mechanism has a laminated steel sheet formed by laminating a plurality of steel sheets and a reinforcing member for reinforcing the laminated steel sheet,

An injection molding machine characterized in that a flow path tube for flowing a temperature control fluid is inserted into an insertion portion formed in the reinforcing member, and the flow path tube is fixed to the insertion portion by a cooling fit or a heat fit.

(Annex 3)

The injection molding machine according to Appendix 2, wherein a heat transfer member is interposed between the inner wall of the insertion portion and the outer wall of the flow path tube.

(Note 4)

A first fixing member on which the stationary mold is mounted,

A second fixing member installed to face the first fixing member;

A first movable member on which the movable mold is mounted,

And a second movable member connected to the first movable member and moving together with the first movable member,

The second fixing member and the second movable member constitute a clamping force generating mechanism for generating a clamping force by suction force by an electromagnet,

At least one of the second fixing member and the second movable member constituting the clamping force generating mechanism has a laminated steel sheet formed by laminating a plurality of steel sheets and a reinforcing member for reinforcing the laminated steel sheet,

An injection molding machine characterized in that a flow path tube through which a temperature control fluid flows is inserted into an insertion portion formed in the reinforcement member, and a heat transfer member is interposed between the inner wall of the insertion portion and the outer wall of the flow path tube.

(Note 5)

The injection molding machine according to any one of Supplementary Notes 2 to 4, wherein the hardness of the heat transfer member is lower than that of the flow path tube.

Fr frame
Gd Guide
10-shaped device
11 stationary platen
12 operation platens
13, 130 rear platen
14 Tie bars
15 stationary mold
16 Operation mold
17 Injection device
18 Injection nozzle
19 Mold equipment
22 suction plate
22a keyway
28 Linear Motors
29 Stator
31 mover
33 magnetic poles (齒)
34 cores
35 coils
37 electromagnet unit
39 center rod
41 square hole
43 screws
44 type thickness adjusting mechanism
44a gear
44b support member
44c type thickness adjusting rotary part
45, 45A, 45B Groove
46, 46A, 46B core
47 York
47a keyway
47b door
48 coils
49 Electromagnetism
51 adsorption part
55 Load detector
60 control unit
61 type opening /
The 62-
71 euro tube
72 insertion hole
73 Heat Transfer Members (Metal Sheet)
75 euro tube
76 euro tube
77 Insert Groove
78 Heat transfer member (metal sheet)
81 euro tube
82 insertion hole
83 Heat Transfer Element (Metal Sheet)
90 embedded members
91 eurohole
92 fall prevention plate
93 Heat transfer member (metal sheet)
94 connecting member
95 euro home
97 Cover member
98 Reinforcing Member
99 eurohole

Claims (16)

A first fixing member on which the stationary mold is mounted,
A second fixing member provided opposite to the first fixing member,
A first movable member on which the movable mold is mounted,
A second movable member connected to the first movable member and moving together with the first movable member,
And,
The second fixing member and the second movable member constitute a mold-clamping force generating mechanism that generates a mold-clamping force by an attraction force by an electromagnet,
At least one of the second fixing member and the second movable member constituting the clamping force generating mechanism includes a laminated steel sheet in which a plurality of steel sheets are stacked and grooves extending in a predetermined direction are formed, and in the grooves of the laminated steel sheet. With the fitting member to be inserted,
The groove having a cross-sectional shape for regulating the rotational movement of the laminated steel sheet by means of a fitting member fitted in the groove;
Characterized in that, injection molding machine. Claim 1
The groove is an injection molding machine extending in the lamination direction of the laminated steel sheet. The method according to claim 1 or 2,
At least one of the said 2nd fixing member and the said 2nd movable member which comprise the said clamping force generating mechanism is comprised from the several laminated steel sheet. The method of claim 3,
The plurality of laminated steel sheets, the injection molding machine is integrated into the fitting member. The method of claim 3,
The plurality of laminated steel sheets, the injection molding machine is integrated by connecting the insertion member. The method according to claim 1 or 2,
The embedding member is fixed to the tie bar,
The laminated steel sheet is an injection molding machine connected to the tie bar through the fitting member. The method according to claim 1 or 2,
The groove is an injection molding machine having a cross-sectional shape of the bottom side is wider than the inlet side. The method according to claim 1 or 2,
The groove in the laminated steel sheet is opened at the cross section of the laminated steel sheet,
An injection molding machine provided on a cross section of said laminated steel sheet, and having a plate member to close said opening. The method according to claim 1 or 2,
The insertion member has an injection molding machine having a flow path of the temperature control fluid. The method according to claim 1 or 2,
The fitting member is an injection molding machine that is fixed to the groove of the laminated steel sheet by a cooling fit or a heat fit. The method of claim 9,
An injection molding machine in which a heat transfer member is interposed between an outer wall of the fitting member and an inner wall of the groove of the laminated steel sheet. The method of claim 11,
The hardness of the said heat transfer member is an injection molding machine lower than the hardness of the said insertion member. The method according to claim 1 or 2,
A flow path tube through which a temperature control fluid flows is inserted into an insertion portion formed in the fitting member,
And an injection molding machine in which the flow path tube is fixed to the insertion part by a cooling fit or a heat fit. The method according to claim 13,
An injection molding machine having a heat transfer member interposed between the inner wall of the insertion portion and the outer wall of the flow path tube. The method according to claim 1 or 2,
A flow path tube through which a temperature control fluid flows is inserted into an insertion portion formed in the fitting member,
An injection molding machine having a heat transfer member interposed between the inner wall of the insertion portion and the outer wall of the flow path tube. The method according to claim 14,
The hardness of the heat transfer member is lower than the hardness of the flow path tube injection molding machine.

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