JPH07205250A - Safety door device for injection molding machine - Google Patents

Abstract

PURPOSE:To provide a safety door device in which rails for a safety door can be eliminated. CONSTITUTION:A safety door 13 switches a clamping space 8 and a swivel space of an injection molding machine. One end of a cantilever slide pack 29 is fixed to a machine frame 16 on a base 2. The door 13 is mounted at its upper part on a movable member 30 of the pack 29, and supported at its lower part to an upper surface of the base 2 via a support roller 31 rotatably supported to a closing direction side part of the door. Further, a lower edge is guided by a guide rail provided at a lower surface side of the base.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety door device for an injection molding machine.

[0002]

2. Description of the Related Art In an injection molding machine 1 (FIG. 4), a mold clamping unit 3 and an injection unit 4 are usually arranged on a base 2 so as to face each other. These units 3 and 4 have a large number of mechanical operating parts, and the movement of each member is strong and at high speed, which is dangerous to the operator. Therefore, the units 3 and 4 are covered with a cover 5 to isolate them from the operator. . However, when exchanging the mold 6 or the cylinder assembly 7, the clamp space 8 (between the fixed platen 9 and the movable platen 10) in the mold clamping unit 3 is used.
And swivel space 11 (fixed platen 9 and injection unit 4
Operation between the front plates 12 of the safety doors 13 (a, b).
The other fixed covers 14 (a, b) can be opened and closed. The safety door 13 is usually slidable in the left and right directions of the injection molding machine 1 as shown in FIG. The traveling rail 15 is a machine frame 16 built on the base 2.
It is a part of FIG. 6 and is installed across the clamp space 8 and the swivel space 11. The machine frame 16 includes the platen of the mold clamping unit 3 and the injection unit 4.
Is built as part of the plate.

The safety door 13 has vertically and horizontally rotatable rollers 17 and 18 attached to an upper portion of a traveling rail 15.
The lower edge is guided by a guide rail 19 provided on the base 2. The fixed cover 14 is fixed to the upper surface of the traveling rail 15 and the side surface of the base 2. Reference numeral 20 is a handle for opening and closing the safety door 13. Also, the safety door 13, the guide rail 15, the rollers 17, 1
8 and the guide rail 19 constitute a safety door device. Since the conventional safety door 13 has such a structure,
When the safety door 13 is opened, the traveling rail 15 is exposed across the clamp space 8 and the swivel space 11 (FIG. 6). For this reason, the appearance is not good, and it may be a hindrance when the mold 6 is replaced, the product is taken out, or the cylinder assembly is replaced.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a safety door device for an injection molding machine, which can be smoothly opened and closed, and has a traveling rail for guiding the door exposed to a clamp space or a swivel space when opened, An object of the present invention is to provide a safety door device that does not hinder the operation in these spaces.

[0005]

A safety door device for an injection molding machine. Equipped with safety door, cantilever slide pack, support roller and guide rail. The safety door has its upper part attached to the movable member of a cantilever slide pack whose one end is fixed to the machine frame on the base, and its lower part is supported by a support roller that is rotatably supported at the front part of this door in the closing direction. It is rotatably supported on the upper surface. Further, the lower edge of the safety door is guided by the guide rail provided on the lower surface side of the base.

The following configuration is preferred. Regarding a safety door device in an injection molding machine in which a mold clamping unit and an injection unit are arranged to face each other on a base, a safety door, a cantilever slide pack, a support roller and a guide rail are provided to open and close a clamp space of the mold clamping unit. Position and fixed plate of mold clamping unit Safety doors are placed at positions that open and close the swivel space between the front plate of the injection unit and each safety door, and each safety door is a cantilever slide pack with one end fixed to the machine frame on the base. The upper part is attached to the movable member of, and the lower part is rotatably supported on the upper surface of the base by a support roller rotatably supported at the front part in the closing direction of the door. Be guided by a guide rail provided on the bottom side. In these safety door devices, the lower edge of the safety door is guided by a guide rail provided on the lower surface side of the base, and the lower edge of the safety door is provided with a rotatable guide roller which is guided by contacting a side surface of the base. That

[0007]

The safety door closes the clamp space and the swivel space while the injection molding machine is moving, and isolates the worker from danger. The cantilever slide pack serves as an upper guide when the safety door is opened and closed. The support rollers support the weight of the safety door and prevent bending loads on the cantilever slide pack. The guide rail guides the lower edge of the safety door,
Prevents the door from swinging back and forth.

[0008]

1 shows the mold clamping unit 3 side of an injection molding machine 1 equipped with a safety door 13 according to the present invention, and in accordance with the gist of the present invention, a base 2, a machine frame 16, a fixed cover 14 and a safety. Only the configuration for the door 13 is shown. Although the injection unit 4 side is omitted, the configuration on the injection unit 4 side corresponding to the machine frame 16, the fixed cover 14, and the safety door 13 on the mold clamping unit 3 side is the fixed platen cover 21.
With the center being, the structure is the same as that of the mold clamping unit 3 side. The injection molding machine 1 is the same as the above-mentioned conventional example except for the safety door device. Parts that are not shown in FIG. 1 but are necessary for the description will be described using the same reference numerals as those of the conventional example. The fixed platen cover 21 is attached to the front and rear surfaces of the fixed platen 9 in the mold clamping unit 3.

The machine frame 16 includes an end support frame 22, an intermediate support frame 23, a horizontal frame 24 in the front-rear direction, and a horizontal frame 25 in the left-right direction.
(2). The front and rear end support frames 22 and the intermediate support frame 23 are erected on the upper surface of the base 2 with their lower ends fixed. The horizontal frame 24 in the front-rear direction is the left and right end support frames 2
The two horizontal frames 25 are joined and fixed, and the horizontal frame 25 in the left-right direction is joined and fixed between the end support frame 22 and the intermediate support frame 23. As a result, the machine frame 16 is formed into a frame shape in which the entire body including the base 2 is a rectangular parallelepiped. However, the horizontal frame in the front-rear direction that connects the intermediate support frames 23 is omitted, and the horizontal frame 25 in the left-right direction does not exist between the intermediate support frame 23 and the fixed platen cover 21. The cross section of the horizontal frame 25 in the left-right direction is bent into a hook shape (FIG. 2) and constitutes the receiving surface 26.

An end fixed cover 27 is provided on the end surface of the machine frame 16.
However, side fixed covers 28 are attached to the machine frame 16 on the upper side and to the base 2 on the lower side with screws or the like. The safety door 13 is arranged at a position that shields the clamp space 8 between the intermediate support frame 23 and the fixed platen cover 21, and the upper part is attached to the movable member 30 of the cantilever slide pack 29 whose one end is fixed to the machine frame 16. The lower portion is supported on the upper surface of the base 2 by a support roller 31 rotatably supported at the front portion of the door 13 in the closing direction. Further, the lower edge is guided by a guide rail 32 provided on the lower surface side of the base 2. The safety door 13 is arranged so as to move on the outer surface side of the side fixing cover 28, and overlaps with the outer surface side of the side fixing cover 28 when the door 13 is opened. In addition, in this embodiment, the safety doors 13 are provided on the front side, which is the operator side, and the rear side, which is the facing surface, with respect to the clamp space 8.

The cantilever slide pack 29 is commercially available and includes a casing 33 and a movable member 30 that runs in the longitudinal direction of the casing 33 through a bearing. In this embodiment, the movable member 30 is a second movable member that is further movable with respect to the outer first movable member 34. The cantilever slide pack 29 is fixed to the receiving surface 26 at the end of the lateral frame 25 on the side of the intermediate support frame so that the end of the casing 33 does not project into the clamp space 8, while the cantilever slide pack 29 of the safety door 13 is fixed. The tip of the second movable member 30 is fixed to the inner surface. The lengths of the first and second movable members 34 and 30 are set such that when the cantilever slide pack 29 is extended, the tip ends reach near the fixed platen cover 21, and when the cantilever slide pack 29 is contracted, the tip ends are stored in the casing 33. . The cantilever slide pack 29 can extend and contract in the left-right direction, but has a predetermined rigidity in the front-rear direction. In this embodiment, the safety door 13
Is further provided with a rotatable guide roller 35 at its lower edge, which is guided by contacting the side surface of the base 2. The support roller 31 and the guide roller 35 are made of synthetic resin having some elasticity so that no noise is generated when the safety door 13 is opened and closed.

With the above construction, the handle 2 for the safety door 13
When pulling to the left and right with 0, the cantilever slide pack 29 expands and contracts, and the support roller 31 moves to the base 2
The clamp space 8 is opened and closed by rolling over. In this case, the cantilever slide pack 29 moves the door 13 back and forth (runs).
The rigidity in the front-rear direction and the lower edge of the door are engaged with the guide rail 32, and the guide roller 35 is prevented from contacting the side surface of the base 2 to prevent rolling, so that opening and closing is performed stably and smoothly. . Further, even when the safety door 13 is opened, rails and the like that cross this space are not exposed in the clamp space 8. The above is an embodiment, and the invention of the present application is not limited to the illustrated specific configuration. The safety door 13 may be provided only on the front side (worker side), or may be provided only for opening and closing the clamp space 8 of the mold clamping unit 3.

[0013]

Since the safety door can be opened and closed in the clamp space or swivel space of the injection molding machine without installing rails that traverse these spaces, work in the clamp space such as mold replacement and cylinder There will be less obstacles when working in the swivel space such as exchanging the assembly, improving work efficiency and reducing danger. When the safety door is opened, the rail for supporting and guiding the door is not exposed in the clamp space or swivel space, so the appearance as an injection molding machine is improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a safety door device in a mold clamping unit according to an embodiment of the present invention with a part of the safety door device omitted.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a front view of a mold clamping unit portion according to the embodiment of the present invention.

FIG. 4 is a front view of an injection molding machine (conventional example).

5 is a cross-sectional view taken along the line BB of FIG.

FIG. 6 is a front view of a mold clamping unit portion (conventional example).

[Explanation of symbols]

 1 Injection Molding Machine 2 Base 3 Clamping Unit 4 Injection Unit 5 Cover 6 Mold 7 Cylinder Assembly 8 Clamp Space 9 Fixed Platen 10 Movable Platen 11 Swivel Space 12 Front Plate 13 Safety Door 14 Fixed Cover 15 Traveling Rail 16 Machine Frame 17 Vertical rotation roller 18 Horizontal rotation roller 19 Guide rail 20 Handle 21 Fixed platen cover 22 End support frame 23 Intermediate support frame 24 Front-rear horizontal frame 25 Left-right horizontal frame 26 Receiving surface 27 End fixed cover 28 Side part Fixed cover 29 Cantilever slide pack 30 Second movable member 31 Support roller 32 Guide rail 33 Casing 34 First movable member 35 Guide roller

Claims (3)

[Claims] 1. A safety door device for an injection molding machine, comprising a safety door, a cantilever slide pack, a support roller and a guide rail, the safety door having one end fixed to a machine frame on a base. The upper part is attached to the movable member of the pack, and the lower part is supported on the upper surface of the base by a supporting roller that is rotatably supported by the front portion of the door in the closing direction, and the lower edge is provided on the lower surface side of the base. A safety door device in an injection molding machine, which is guided by a guide rail. 2. A safety door device in an injection molding machine, in which a mold clamping unit and an injection unit are arranged to face each other on a base, the safety door including a safety door, a cantilever slide pack, a support roller and a guide rail. Are located at positions to open and close the clamp space of the mold clamping unit and to open and close the swivel space between the fixed platen of the mold clamping unit and the front plate of the injection unit, and one end of each is fixed to the machine frame on the base. The upper part is attached to the movable member of the cantilever slide pack, and the lower part is supported on the upper surface of the base by a support roller that is rotatably supported by the front part of the door in the closing direction, and the lower edge is the lower surface of the base. A safety door device in an injection molding machine, characterized by being guided by a guide rail provided on the side. 3. A safety door device for an injection molding machine according to claim 1, wherein the lower edge of the safety door is guided by a guide rail provided on the lower surface side of the base, and A safety door device in an injection molding machine, characterized in that a rotatable guide roller is provided at an edge thereof so as to be guided by contacting a side surface of a base.