JP2719867B2 - Base structure of injection molding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base structure in which a mechanical portion such as a mold clamping unit or an injection unit is mounted in an injection molding machine, and a control or power device is provided in a space. .

[0002]

2. Description of the Related Art A base structure 2 of an injection molding machine 1 is composed of a base 3, a cover 4, an attached structure thereof, and a panel 5 (FIG. 19). The base 3 is a sturdy frame body composed of a combination of shaped steel materials vertically and horizontally fixed by welding. A mold clamping unit 7 and an injection unit 8 are placed on an upper surface of an upper frame 6, and a lower frame 9.
A support structure 10 capable of level adjustment is attached to the lower surface of the device.

The cover 4 is for separating the mold clamping unit 7 and the injection unit 8 from an operator, and is separated on the mold clamping unit 7 side into a clamp cover 11 covering a clamp portion and a gate cover 12 covering a gate portion. ing.

The gate cover 12 is provided with roller rollers 13 (a, b) on the upper side and the lower side (FIG. 20), and the roller roller 13b on the lower side is mounted on a rail 14 fixed to the upper surface of the lower frame 6 of the base 3. The roller roller 13b on the upper side is mounted by being guided by the upper rail 15. Gate cover 12
Is provided with a window 16 so that the inside can be seen even when it is closed. In addition, the upper rail 15 is fixed to the base 3 side similarly to the lower rail 14.

The upper side of the clamp cover 11 is fixed to the upper rail 15 by screwing, and the lower side is fixed to the lower frame 6 of the base 3 by screwing. The gate cover 12 can be moved between the gate portion and the clamp portion by the roller rollers 13 (a, b) and the rails 14 and 15, and when it moves to the clamp portion, it overlaps the inside of the clamp cover 11. (FIG. 20).

The panel 5 is for shielding the inside of the frame of the base 3 and is formed by sheet metal working.
(See FIG. 17). The opening shielded by the panel 5 is defined by upper and lower frames 6 and 9 of the base 3 and left and right vertical frames 17 (a and b). A thin channel steel material 19 is fixed by welding. The channel steel material 19 has a water receiving groove formed at the periphery of the opening to prevent the temperature-adjusted liquid from flowing along the frame and flowing into the equipment housed inside the frame.

[0007] Although such a conventional base structure 2 sufficiently exhibits its function, it has the following disadvantages. When the gate cover 12 is attached, the upper and lower roller rollers 13 (a, b) are located between the upper and lower rails 15, 14, and the gate cover 12 is supported by the cover-side structure for supporting the rollers. The range in which the inside can be seen through the window 16 provided in the vehicle is narrowed.

When the gate is opened, the lower rail 14 is exposed on the lower frame 9 and hinders the insertion and removal of the mold from and into the gate.

The clamp cover 11 is mounted on the base 3
Since the screws are fixed to the upper frame 6 and the upper rail 15 with screws, the screw heads stand out from the outside, and the appearance is poor. In addition, a large number of screws must be attached and detached each time the attachment and detachment of the clamp cover 11 is required, which is troublesome.

Conventionally, a supporting structure 10 is shown in FIGS.
, But each has its own drawbacks. In the case of FIG. 12 and FIG. 13, the level adjustment is easy, but the appearance is poor due to the atmosphere where the members are exposed. In the case of FIG. 12, the load of the base 3 does not act on the support structure 10 from directly above, and the support structure 10 protrudes to the side, so that there is a danger of catching a foot. In the case of FIG. 14, the load can be received directly above, but the support structure 10 is too large. It is also expensive. At the opening of the base 3 to which the panel 5 is attached, it is difficult and troublesome to attach (weld) the channel steel 19 for forming the water receiving groove. In addition, since the panel 5 is opened and closed by the hinge, a large space for opening and closing the panel 5 is required on the front surface of the base 3.

[0011]

SUMMARY OF THE INVENTION An object of the present invention is to provide a base structure of an injection molding machine in which a cover, a support structure, and a panel of a mold clamping unit are improved.

[0012]

A cover is provided for isolating a clamp portion and a gate portion of a mold clamping unit on a base from an operator. The gate cover of the gate section is of a hanging door type. The cover is suspended by an upper rail fixed to the base side and guided by a guide rail fixed to the lower surface of the upper frame of the base. The cover is movable from the gate to the outside of the clamp cover. The cover of the clamp section is composed of an end cover, a clamp cover, and a post / cover that is fixed to the base side that partitions the clamp section and the gate section.

The clamp cover is removably mounted between the end cover and the post / cover by engagement. The cover of the clamp unit may have the following configuration. A slider consisting of a slide rail and a slide block is attached to the inner surface of the cover with the sliding direction being vertical. The slide block is attached to the upper rail fixed to the base side via a hinge, so that the slide rail can be changed in position between a vertical position and a horizontal position with the upper rail being a fixed position.

The support structure is formed on the lower frame of the base as follows. At the center in the width direction of the base lower frame, a pipe integrally provided with a flange and a female screw portion at the lower end is vertically penetrated from below, and the flange is brought into contact with the lower surface of the lower frame to be fixed to the lower frame of the base. A male screw with a mount fixed to the lower end is screwed into the female screw from below, and a fixing nut is screwed into the upper end portion that has penetrated the pipe.

A base plate for sheet metal processing is mounted on a panel mounting portion of the base. An opening is formed in the center of the substrate, and an inner peripheral edge is bent outward on each side except a lower side of the opening to form a water receiving groove. Engaging claws for engaging the panel are provided on the upper side and the lower side of the opening. The panel is detachably mounted on the substrate.

[0016]

The construction in which the gate cover is of the hanging door type enlarges the range in which the inside of the gate cover can be seen through the window.
The configuration in which the clamp cover is attached by engagement improves the appearance of the cover.

The structure in which a male screw having a mount fixed to the lower end is supported on a pipe fixed to the pipe penetrating through the center in the width direction of the base simplifies the support structure and allows the load of the base to act from directly above the support structure. To make things possible.

The configuration in which the panel is attached to the base through the sheet metal processing substrate facilitates the formation of the water receiving groove in the opening, and allows the opening to be made smaller, and thus makes it possible to make the panel smaller. . The configuration using the slider for the clamp cover facilitates opening and closing of the clamp cover, and arranges the clamp cover after being opened at a position where it does not hinder the work.

[0019]

FIG. 1 shows an embodiment according to the present invention.
The clamp cover 11, the gate cover 12, the support structure 10, the panel 5, and the attached structures relating thereto are different from those of the conventional example.

FIG. 2 relates to a cover structure of the mold clamping unit 7. A fixed platen 20 is used as a rear support on the upper part of the base 3, and two upper rails 15 are provided between the base 3 and the front support 21.
Has been fixed. A lower rail 14 is fixed to the lower surface of the upper frame 6 of the base 3. The front support 21, the lower rail 14, and the upper rail 15 are made of channel steel. With respect to the rectangular parallelepiped frame structure thus formed, the clamp cover 11, the gate cover 12, the end cover 2
2. A decorative cover 24 for adjusting the side surfaces of the column / cover 23 and the fixed platen 20 is attached. Each of these covers is formed by sheet metal processing and FRP, and has a uniform outer contour. Further, a pair of these covers except for the end cover 22 is prepared and arranged on both right and left sides of the frame structure (one is omitted in FIG. 2).

The decorative cover 24 is fixed to the side surface of the fixed platen 20 by an appropriate means such as screwing. The support post 23 is provided with upper and lower mounting fins 25 projecting inward.
(A, b), and a vertical bearing fin 26 protruding from the surface facing the end cover 22 (FIG. 2).
~ FIG. 6). The end cover 22 has a size and an outer shape to cover the front end face of the frame structure, and the support cover 2
The bearing fin 27 is provided to protrude on the side facing the surface 3 and is formed vertically. The two fins 27 are formed in parallel at the left and right sides of the frame structure.

The end cover 22 is fixed to the front support 21 of the frame structure. The support / cover 23 fixes the upper mounting fin 25a to the lower surface of the upper rail 15, and connects the lower mounting fin 25b to the base 3. It is fixed to the upper surface of the lower frame 6 and attached to the frame (FIG. 3). The support / pillar cover 23 defines a clamp portion between the end cover 22 and the cover of the mold clamping unit 7, and a gate portion between the support cover 23 and the decorative cover 24. In addition, the above-mentioned bearing fin 2
Two engaging pins 30 (FIG. 3) each having a neck portion 28 and a head portion 29 are fixed to the outer surfaces of the upper and lower portions by screws, respectively.

The clamp cover 11 is formed so that it fits tightly into the above-mentioned clamp portion, and its outer surface is flush with the outer surfaces of the end cover 22 and the column / poster cover 23. A contact surface 31 (a, b) having a surface facing the surface of the fins 26, 27;
On this surface, two darma holes 32 each having a large diameter of the lower hole are formed vertically. The position of the daruma hole 32 corresponds to the engagement pin 30 described above.

Therefore, the clamp portion of the mold clamping unit 7 is such that the clamp cover 11 is
The end cover 22 and the column / cover 2 are engaged with each other.
3 to be shielded. Also, the attachment / detachment of the clamp cover 11 is performed by using the handle 33 provided on the outer surface.
This is performed by moving the clamp cover 11 up and down with the aid of and engaging and disengaging the engaging pin 30 with the daruma hole 32 (FIGS. 4 and 5). For this reason, a screw or the like is not used for fixing the clamp cover 11, and the appearance of the cover of the clamp portion is simple and has a good appearance.

The outer shape of the gate cover 12 is similar to the clamp cover 11, and is slightly larger than the clamp cover 11. The traveling body 34 is provided on the upper side of the gate cover 12, the guide roller 35 is provided on the lower side, and the window 16 is formed in the center (FIG. 2).

The traveling body 34 includes vertical rollers 37a and 37b whose rotation surface is perpendicular to the bracket 36, and
It is constituted by a horizontal roller 37c which is located between them and has a rotating surface arranged horizontally. These rollers 37 (a to
c) is a bearing made of synthetic resin which is considerably smaller than the conventional roller roller 13a, and is rotatably attached to the lower side of the bracket 36 (FIG. 8). Therefore, the traveling body 34 is configured to be relatively small and compact as a whole. Further, it can be configured at low cost. The plan running body 34 is
Three are mounted on the upper side of the gate cover 12 via the upper mounting plate 38 which is long in the front-rear direction.

The guide roller 35 is a roller made of the same synthetic resin as described above, with the rotating surface being horizontal and the lower mounting plate 39
And is attached to the lower side of the gate cover 12 by the plate 39.

The upper rail 15 is composed of a support section 40 made of a steel material having a square cross section and a traveling section 41, and these are composed of the traveling section 4
1 and 2 are integrated by welding (FIGS. 3 and 7). The running portion 41 has a gap 42 extending over the entire length of the running portion 41 by notching the upper outer corner of the rectangular cross section, and the outer wall 4 at the rear gate portion.
An introduction portion 43 of the traveling body 34 is formed in 1a (FIGS. 7 and 9). The distance between the outer side wall 41a and the inner side wall 41b of the traveling portion 41 is determined by the distance between the horizontal roller 3 and the traveling body 34.
7c, and the distance between the upper side wall 41c and the lower side wall 41d is substantially equal to the diameter of the vertical roller 37 (a, b).

In FIG. 7, reference numeral 44 denotes a closing member having a horizontal portion 44a and a vertical portion 44b, and a fitting member 45 having the same thickness and shape as the space of the introduction portion 43 is fixed to the inner surface of the vertical portion 44b. . The closing member 44 includes a horizontal portion 44.
a is applied to the lower surface of the upper rail 45, the fitting member 45 of the vertical portion 44b is fitted into the introduction portion 43, and is fixed by the screw 46.

The lower rail 14 is formed of a C-shaped channel steel or the like, and has a length extending from the clamp to the gate. The lower rail is fixed to the lower surface of the upper frame 6 of the base 3 with the opening facing downward. The lower rail 14 has an outer wall 14a and an inner wall 14b, and the interval between them is substantially equal to the diameter of the guide roller 35 (FIG. 10).

Therefore, after the clamp cover 12 is fitted with the lower guide roller 35 on the lower rail 14,
The rollers 37 (ac) of the upper traveling body 34 are inserted into the traveling section 41 of the upper rail 15 from the introduction section 43 and attached. The introduction portion 43 after the running body 34 is inserted is closed by the above-mentioned closing member 44, and the running body 34 is
1 is prevented from falling off. The guide cover 12 thus mounted is a type of a hanging door suspended by the upper rail 15 and guided by the lower rail 14,
As shown in FIG. 6, the outer side of the
It can move back and forth between the clamp and the gate. At this time, horizontal deflection of the gate cover 12 is suppressed by the horizontal roller 37c of the traveling body 34 and the guide roller 35 with respect to the lower rail 14, and vertical oscillation is suppressed by the vertical rollers 37 (a, b) of the traveling body 34. The driving of the gate cover 12 is light because it is suppressed.

The vertical dimension of the upper rail 15 can be reduced by making the traveling body 34 compact, and the traveling body 34 is arranged above the lower surface of the upper rail 15 by being of a hanging door type. Therefore, even if the vertical dimension of the window 16 in the gate cover 12 is substantially equal to the vertical distance from the lower surface of the upper rail 15 to the upper surface of the upper frame 6 of the base 3, there is no obstacle to the view,
The range in which the inside can be seen from the window 16 becomes wider than before. Further, since the lower rail 14 is attached to the lower surface of the upper frame 6, it is not noticeable even when the gate portion is opened, and does not hinder the mold replacement.

A support structure 10 is provided on the lower frame 9 of the base 3 (FIGS. 15 and 16). The support structure 10 includes a pipe 49 integrally provided with a flange 47 at the lower end and a nut 48 as a female screw portion, a fixing nut 50, and a male screw 52 having a mount 51 fixed at the lower end. Pipe 49
Is vertically penetrated from below in the center of the lower frame 9 in the width direction,
The flange 47 is fixed to the lower frame 9 of the base 3 by welding with the flange 47 in contact with the lower surface of the lower frame 9. Next, the male screw 52 is screwed into the nut 48 from below, and the pipe 4
A fixing nut 50 is screwed into the upper end portion passing through 9, and the vertical position of the male screw 52 is fixed between the nut 49 and the pipe 49.
When adjusting the level of the base 3, the fixing nut 50 is loosened, and the tool is turned in a state where a tool is not provided in the tool hooking portion at the upper end of the male screw 52.

Since the pipe 49 is arranged in the center of the lower frame 9 in the width direction, the support structure 10 can receive the load of the base 3 almost immediately above. Also, pipe 4
9 vertically penetrates the lower frame 9 and is fixed to the lower frame 9, so that even if the upper nut 50 is strongly screwed into the lower nut 48 to fix the vertical position of the male screw 52,
The force is received by the pipe 49, and no deformation such as a depression of the lower frame 3 occurs. Further, the structure can be simple and small. As a result, the mount 51 does not protrude significantly from the lower frame 9 of the base 3.

The base 53 has a substrate 53
Is mounted, and the panel 5 is mounted in the opening 54 of the substrate 53 (FIGS. 18A and 18B). The substrate 53 has an opening 54 in the center of one sheet metal, and a water receiving groove 55 is formed on each side except the lower side. An engagement claw 56 for engaging the panel 5 is provided on the lower side of the substrate 53 by sheet metal processing. That is, the water receiving groove 55 is formed by bending the inner peripheral edge of each side excluding the lower side of the opening 54 outward, and the engaging claw 56 on the lower side is formed by bending a part of the inner peripheral edge of the lower side outward in a hook shape. Is formed.

The panel 5 is formed in a shallow box shape by sheet metal working, and has a handle portion 57 on the outer surface, and an engagement hole 58 into which the above-mentioned engagement claw 56 is inserted. Reference numeral 59 denotes a tight material for vibration and dust proof. The substrate 53 is screwed to the outer surface of the upper frame 6, the vertical frame 17, and the lower frame 9 at the panel mounting portion of the base 3. Then, the panel 5 is attached to the substrate 53 by engaging the lower engagement hole 58 with the engagement claw 56, and the upper side inside the panel 5 is locked by the water receiving groove 55 above the panel 5. As a result, the opening 54 is closed, and the water receiving groove 55 on the inner peripheral edge fits inside the panel 5.

As described above, since the panel 5 is not fixed to the base 3 by the hinge, when the housing portion of the base 3 is opened, the space on the front surface of the base required for opening and closing the panel 5 is small. Further, since the water receiving groove 54 in the substrate 53 is formed by sheet metal processing from the substrate 53, a difficult operation such as welding a small channel steel material separately prepared for the water receiving groove 54 to the frame material of the base 3 is performed. Disappears. From the opening 54, inspection and adjustment of the devices housed inside the frame of the base 3 are performed. In this way, the cover (clamp cover 11,
The gate cover 12), the support structure 10, and the panel 5 are improved, and the conventional problems in the base structure 2 of the injection molding machine are solved.

In view of safety standards, when the clamp cover 11 is to be opened and closed by using a structure in which some tool must be used, as shown in FIG. Is fixed, and a part of the contact surface on the lower side of the cover 11 is provided with a notch. The stay 60 includes a screwing portion 61 at a tip portion bent in a hook shape,
When the clamp cover 11 is attached to the support fin 26 of the column / cover 23, the screwing portion 61 is positioned so as to face the lower surface of the clamp cover 11 from inside. Then, a screw is screwed into the screwing portion 61 from outside the clamp cover 11 and fixed. Alternatively, when the clamp cover 11 is attached to the column / cover 23, the fixing screw 67 is screwed from inside the support fin 26 of the column / cover 23 to fix them together. In this case, the wide area of the sheet metal is closely attached, and the fixing of the clamp cover 11 is more stable.

Similarly, as for the panel 5, a hook 62 rotated by a tool or a key as shown in FIG.
At the same location, a latch-type lock handle that can be disengaged with one touch is provided. FIG. 11 shows the clamp cover 11.
In this embodiment, a slide rail 63 is vertically mounted inside the clamp cover 11, and a slide block 64 is mounted on the slide rail 63. Slide rail 6
3 and the slide block 64 form a set and the slider 6
5 is constituted. A slide block 64 is attached to the outer surface of the upper rail 15 via a hinge 66 having a relatively long arm so as to be rotatable in the vertical direction.

Therefore, when the clamp cover 11 is rotated while being lifted upward, the slide rail 63 is moved upward with respect to the slide block 64, and the slide block 64 is rotated upward.
Is changed from the vertical position to the horizontal position with the upper rail 15 as a fixed position, and the clamp portion is opened. When closing the clamp, the operation is reversed. With this structure, since the clamp cover 11 is not removed, the cover 1
1 is easy to open and close. In addition, the opened clamp cover 11 moves to the upper part of the mold clamping unit 7 and is less hindered when performing internal work.

In the present invention, the upper and lower rails 1
4 and 15, the structure of the traveling body 34, the end cover 22
The engagement structure of the clamp cover 11 with the support post 23 and the support structure 23, the mounting structure of the panel 5 with the substrate 53, etc.
It is not limited to the structure of the illustrated embodiment.

[0042]

The range in which the inside can be observed from the window of the gate cover is widened. The lower rail for opening and closing the gate cover is inconspicuous, and does not interfere with mold replacement. The clamp cover has a good appearance and is easily attached and detached. Since the support structure receives the load of the base directly above, the load is stably supported. In addition, since the mount is located directly below the base lower frame, it is inconspicuous, does not protrude laterally, and is safe. The panel mounting portion on the base can be easily configured. Further, the panel can be easily attached and detached, and the space required for opening and closing the panel with respect to the base is hardly taken.

[Brief description of the drawings]

FIG. 1 is a front view (the present invention).

FIG. 2 is an exploded perspective view (partially omitted) of a mold clamping portion.

FIG. 3 is a side view (partial cross-section) of a portion of a post / cover that is viewed from the front.

FIG. 4 is a front view (partially cut away) of the clamp cover.

FIG. 5 is a sectional view of a main part.

FIG. 6 is a side view of the gate cover portion viewed from the rear (partial cross section of the present invention).

FIG. 7 is a perspective view of a main part.

FIG. 8 is a perspective view of a traveling body.

FIG. 9 is a cross-sectional view (partially transparent) of a support portion of the upper rail.

FIG. 10 is a cross-sectional view (partially transparent) of the lower rail.

FIG. 11 is a side view of a portion of the clamp cover as viewed from the rear (partial cross section of another embodiment).

FIG. 12 is a perspective view of a support structure (conventional example).

FIG. 13 is a perspective view of a support structure (conventional example).

FIG. 14 is a perspective view of a support structure (conventional example).

FIG. 15 is a perspective view of the support structure (the present invention).

FIG. 16 is a longitudinal sectional view of the support structure (the present invention).

FIG. 17 is a perspective view of a panel mounting portion (conventional example).

FIG. 18A is a perspective view of a panel mounting portion (the present invention). B: longitudinal sectional view of the panel mounting portion (the present invention).

FIG. 19 is a front view (conventional example).

FIG. 20 is a side view (partial cross section of a conventional example) of a gate cover portion viewed from the rear.

[Explanation of symbols]

2 Base Structure 3 Base 4 Cover 5 Panel 6 Upper Frame 7 Mold Clamping Unit 9 Lower Frame 10 Support Structure 11 Clamp Cover 12 Gate Cover 14 Lower Rail 15 Upper Rail 16 Window 22 End Cover 23 Supporting Column Cover 34 Traveling Body 37 Roller 40 Support part 41 Running part 47 Flange 49 Pipe 51 Mount 52 Male screw 53 Board 55 Water receiving groove 63 Slide rail 64 Slide block 66 Hinge

Claims (5)

(57) [Claims] The present invention further comprises a cover for isolating a clamp portion and a gate portion of a mold clamping unit on a base from an operator. The gate cover of the gate portion is suspended on an upper rail fixed to a base side and is provided on the base. A base structure of an injection molding machine, wherein the base structure is a suspension door type guided by a guide rail fixed to a lower surface of a frame, and is movable from a gate portion to an outside of a clamp cover. 2. A cover for isolating a clamp portion and a gate portion of a mold clamping unit on a base from an operator, and the cover of the clamp portion is fixed to an end cover, a clamp cover, and a base side that defines the clamp portion and the gate portion. A base structure for an injection molding machine, comprising: a support column cover provided with a clamp cover; and a clamp cover is detachably mounted between the end cover and the support column cover by engagement. 3. A structure in which a support structure is provided in a lower frame of a base, wherein the support structure vertically penetrates a pipe integrally provided with a flange and a female screw portion at a lower end in a width direction center of the lower frame of the base. The flange is brought into contact with the lower surface of the lower frame and fixed to the lower frame of the base, and a male screw having a mount fixed to the lower end is screwed into the female screw from below, and a fixing nut is screwed to the upper end portion that has passed through the pipe. A base structure of an injection molding machine characterized by being combined. 4. A cover for isolating a clamp portion and a gate portion of a mold clamping unit on a base from an operator, and the cover of the clamp portion is provided with a slider including a slide rail and a slide block on an inner surface so that a sliding direction thereof is set in a vertical direction. The slide block is attached to the upper rail fixed to the base side via a hinge, and the slide rail is characterized in that the upper rail can be changed to a vertical position and a horizontal position with the upper rail as a fixed position. Base structure of injection molding machine. 5. A structure in which a base plate for sheet metal processing is mounted on a mounting position of a panel of a base, and a panel is removably mounted on the substrate. An opening is formed in a central portion of the substrate, except for a lower side of the opening. A base structure for an injection molding machine, wherein an inner peripheral edge is bent outward on each side to form a water receiving groove, and an engaging claw for engaging a panel is provided on a lower side of the opening.