JPH0745304Y2 - Guard device for heating cylinder in injection molding machine - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention is applied to an injection molding machine,
The present invention relates to a guard device for a heating cylinder, which is provided in order to protect a worker from scattering of resin that occurs when a molten resin in a heating cylinder is free shot, contact with a high-temperature injection nozzle, and the like.

[0002]

2. Description of the Related Art A heating cylinder guard device for an injection molding machine is known as shown in FIGS. Explaining this, the mold device 2 and the injection device 3 are provided on the machine body 1. The mold device 2 includes a set of molds (not shown) that can be opened and closed. The injection device 3 has a heating cylinder 5 for injecting molten resin from an injection nozzle 4 into a molding cavity of a mold. The heating cylinder 5 projects from the injection device 3 toward the mold device 2. In the figure, 6 is an upper cover that covers the upper portion of the injection device 3.

An upper rail 21 and a lower rail 22 are provided between the fixed guard 6A for covering the injection device 3 and the mold device 2. The upper rail 21 and the lower rail 22 are parallel to each other and horizontal. The upper rail 21 includes two columns 24 vertically attached to the machine body 1 by a mounting bracket 23.
(They overlap in FIG. 5) and is supported by the lower rail 2
2 is fixed directly on the machine body 1.

The slide door 25 has two upper guide rollers 26 and two lower guide rollers 27 on the upper and lower portions thereof.
Each guide roller 26, 26, 27, 27 is overlapped in FIG. Each upper guide roller 26 is vertically rotatably attached to the slide door 25 and is guided to the upper surface 21 a of the upper rail 21. Each lower guide roller 27 is horizontally rotatably provided and is guided by the vertical guide surface 22 a of the lower rail 22. The sliding door 25 is movable left and right in FIG. 4 along the upper rail 21 and the lower rail 22, and can be closed on the front surface of the heating cylinder 5.

[0005]

The conventional guard device constructed as described above has the following problems. That is, (a) Since the upper rail 21 is provided above the front side of the heating cylinder 5, it is difficult to perform maintenance such as maintenance of the heating cylinder 5 and replacement of the injection nozzle 4.

(B) When the injection device 3 is swung horizontally, the upper rail 21, the lower rail 22, and the slide door 2 are rotated.
5 must be removed, which is troublesome and time-consuming.

An object of the present invention is to provide a guard device which facilitates inspection of the heating cylinder and replacement of the injection nozzle. Another object of the present invention is to provide a guard device capable of rotating the injection device without removing the rail and the sliding door.

[0008]

In order to achieve the above object, in a guard device for a heating cylinder in an injection molding machine according to claim 1, a slide door is provided so as to project from a fixed guard of the injection device toward a mold device. In the guard device of the heating cylinder in the injection molding machine, which is provided on the front surface of the heating cylinder, which is guided by the upper rail and the lower rail and can be opened and closed to the left and right, in the upper rail, almost the entire length of the upper rail is a fixed guard of the injection device. And a guide rod guided by the upper rail is provided at the end of the slide door on the open side so as to project in parallel with the upper rail.

According to a second aspect of the invention, in the first aspect of the invention, a lower guide roller is provided at a lower portion of the slide door and an upper guide roller is provided at a guide rod, and the upper guide roller of the guide rod is provided at an upper rail, and A slide door is provided by guiding the lower guide rollers to the lower rails.

According to a third aspect of the present invention, in the second aspect of the invention, the upper guide roller is horizontally rotatably provided and guided to a substantially vertical guide surface of the upper rail, and the lower guide roller is vertically arranged. It is rotatably installed and guided on the almost horizontal upper surface of the lower rail.

Furthermore, a guard device according to a fourth aspect of the present invention is the device of the first, second or third aspect, wherein the upper rail and the lower rail are fixed to a swivel base that supports the injection device so as to swivel on the machine body. It was configured.

[0012]

In the invention of claim 1, the upper rail is not provided between the fixed guard of the injection device and the mold device,
When the sliding door is opened, there is nothing in the heating cylinder that hinders the work. Therefore, it is easy to replace the injection nozzle.

According to the second aspect of the present invention, in addition to the above-described operation, the slide door smoothly opens and closes by the rotation of each guide roller.

According to the third aspect of the invention, in addition to the above operation, the lower rail supports the entire weight of the slide door, and the upper rail and the guide bar prevent the slide door from collapsing. Therefore, the load on the guide rod is reduced. Further, in the guard device according to the fourth aspect, when the injection device is rotated, the upper rail, the lower rail, and the slide door are also rotated together. Therefore, it is not necessary to remove the rail and the slide door when turning the injection device, and to reassemble the slide door and the like when returning the injection device to the original position.

[0015]

1 to 3 show an embodiment of a heating barrel guard device in an injection molding machine according to the present invention. The configurations of the machine body 1, the mold device 2, the injection device 3 and the like are the same as those of the conventional one, and thus the same reference numerals are given and detailed description thereof is omitted.

In these drawings, reference numeral 8 is an upper rail. The upper rail 8 is detachably attached by a bolt, is attached to the upper ends of the pair of columns 11, 11 and is supported horizontally. Each of the columns 11 and 11 is vertically installed above the mounting bracket 10 fixed to the swivel base 9 with a bolt so as to be integrated with the mounting bracket 10. The upper rail 8 is formed by using a channel material with its opening facing upward, and the entire length thereof is arranged at the portion of the fixed guard 6A fixed to the support columns 11 and 11 with bolts. The end surface of the fixed guard 6A is aligned with the left end of the fixed guard 6A. The turning base 9 is provided on the machine body 1 so as to be horizontally turnable,
It supports the injection device 3.

Reference numeral 12 is a lower rail. The lower rail 12 is horizontally fixed to the lower ends of the mounting members 10 and 10 with its free end protruding between the mold device 2 and the fixed guard 6A. The upper rail 8 and the lower rail 12 are parallel to each other.

A guide bar 14 is attached to the slide door 13 so as to horizontally project from the open end (the right end in FIGS. 1 and 2) of the slide door 13. The guide rod 14 is located on the upper rail 8 and is parallel to the upper rail 8. On the side surface of the guide rod 14, a pair of upper guide rollers 1
Reference numerals 5 and 15 are located near both ends of the guide rod 14 in the longitudinal direction, and are horizontally rotatably attached by a bolt shaft 16. Each of the upper guide rollers 15 and 15 is composed of a ball bearing, the outer ring of which is fitted into the upper rail 8, and moves while rolling along the vertical guide surfaces 8a and 8a of the upper rail 8.

A pair of lower guide rollers 17, 17 are attached to the lower part of the slide door 13 by a shaft 18 so as to be vertically rotatable. Each lower guide roller 17, 17 has a guide groove 1
The lower rail 12 is fitted into the 7a and moved along the horizontal upper surface 12a of the lower rail 12. With the above configuration, the slide door 13 is guided by the upper rail 8 and the lower rail 12 and moves to the left and right in FIGS. 1 and 2, so that the front surface of the heating cylinder 5 (the surface on which the operator operates) is moved. Open and close.

The operation of the heating cylinder guard device in the injection molding machine of the present invention having the above construction will be described below. FIG. 1 shows a state in which the slide door 13 is open.
The sliding door 13 rests on the lower rail 12 and is supported by the upper rail 8 so as to hold the guide bar 14, so that the sliding door 13 is prevented from falling sideways and is stable. When the handle 19 is pushed to the left and the slide door 13 is pushed to the left in FIG. 1, the slide door 13 rotates the rollers 15 and 17 while keeping the above state and moves to the left to close the front surface of the heating cylinder 5 (see FIG. 2).

Even when the slide door 13 is in the closed state, the guide rod 14 is supported by the upper rail 12, so that the slide door 13 does not fall down. Needless to say, when the sliding door 13 is opened, the sliding door 13 is pulled to the right in FIG.

When the injection device 3 is swung, the swivel base 9 is swung as it is. At this time, the rails 8 and 12 and the slide door 13 also turn together with the turning base 9, so that when the injection device 3 turns, the rails 8 and 1 move.
There is no need to remove or assemble 2 etc.

In the illustrated embodiment, the end surface of the upper rail 8 on the side of the mold device 2 is aligned with the end of the fixed guard 6A, but the end of the upper rail 8 extends from the fixed guard 6A to the fixing device 2. Even if it protrudes a little to the side, or even if it enters into the fixed guard 6A side so as to be recessed, it does not matter since it does not significantly affect the operations related to the heating cylinder 5 and the stability of the slide door 13.

The position of the guide bar 14 may be below the upper rail 8. In this case, the upper rail 8 faces the opening downward,
The upper guide roller 15 is provided on the guide rod 14.

[0025]

As described above, in the heating cylinder guard device of the injection molding machine according to the first aspect, the slide door is
In the heating cylinder guard device in the injection molding machine, which is provided on the front surface of the heating cylinder projecting from the fixed guard of the injection device toward the mold device, and which is openable and closable left and right guided by the upper rail and the lower rail, The upper rail is provided by disposing substantially the entire length thereof on the fixed guard side of the injection device, and a guide rod guided by the upper rail is provided at the end of the slide door on the open side in parallel with the upper rail. Since the upper rail is not present on the front surface of the heating cylinder, the workability is good and various operations such as replacement of the injection nozzle and cleaning can be smoothly performed.

According to a second aspect of the present invention, in the first aspect of the present invention, the slide door includes a lower guide roller at a lower portion thereof, an upper guide roller at a guide rod, and an upper guide roller of the guide rod at an upper rail. Moreover, since the lower guide rollers are provided so as to be guided by the lower rails respectively, the slide door can be smoothly opened and closed.

Further, the invention of claim 3 is the invention of claim 2, wherein the upper guide roller is horizontally rotatably provided and is guided to a substantially vertical guide surface of the upper rail.
Since the lower guide roller is vertically rotatably provided and guided on the substantially horizontal upper surface of the lower rail,
The guide bar is not heavily loaded. Therefore,
Also in this respect, the sliding door can be opened and closed smoothly.

According to a fourth aspect of the present invention, in the first, second or third aspect of the present invention, the upper rail and the lower rail are fixed to a swivel base that rotatably supports the injection device on the machine body. Therefore, when the injection device is turned, it is not necessary to remove or assemble the rails or slide doors one by one, and workability is good.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention and is a front view of an injection molding machine equipped with the guard device.

FIG. 2 is a front view of the main part of the guard device of the present invention.

FIG. 3 is a sectional view of a main part of the guard device of the present invention.

FIG. 4 is a front view of an injection molding machine equipped with a conventional guard device.

5 is a cross-sectional view of the guard device of FIG.

[Explanation of symbols]

 1 Machine Body 2 Mold Device 3 Injection Device 5 Heating Cylinder 6A Fixed Guard 8 Upper Rail 8a Guide Surface 9 Swivel Base 10 Mounting Bracket 11 Support 12 Lower Rail 12a Upper Surface 13 Sliding Door 14 Guide Rod 15 Upper Guide Roller 17 Lower Guide Roller 17a Guide groove

Claims (4)

[Scope of utility model registration request] 1. An injection molding in which a sliding door is provided on the front surface of a heating cylinder protruding from a fixed guard of the injection device toward the mold device so as to be openable and closable left and right by being guided by an upper rail and a lower rail. In the guard device for the heating cylinder in the machine, the upper rail is provided with its substantially entire length arranged on the fixed guard side of the injection device, and is guided to the upper rail at the open end of the slide door. A guard device for a heating cylinder in an injection molding machine, wherein a rod is provided so as to project parallel to the upper rail. 2. The slide door includes a lower guide roller at a lower portion thereof and an upper guide roller at a guide rod,
2. The heating cylinder guard device in an injection molding machine according to claim 1, wherein the upper guide roller and the lower guide roller of the guide rod are provided so as to be guided by the upper rail and the lower guide roller, respectively. 3. The upper guide roller is horizontally rotatably provided and guided by a substantially vertical guide surface of the upper rail, and the lower guide roller is vertically rotatably provided and is substantially horizontal upper surface of the lower rail. The heating cylinder guard device in the injection molding machine according to claim 2, wherein 4. The heating cylinder in an injection molding machine according to claim 1, wherein the upper rail and the lower rail are fixed to a swivel base that swivelsly support an injection device on a machine body. Guard device.