JPH0742687Y2 - Mounting structure for heating cylinder of injection molding machine - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cylinder mounting structure for an injection molding machine.

[0002]

2. Description of the Related Art As shown in FIGS. 4 and 5, an injection screw 2 inserted in a heating cylinder 1 is rotated in a circumferential direction by a rotation drive device 3, and is rotated by a movement drive device 4. Three
In the injection molding machine configured to move in the axial direction together with, the mounting hole 5a is conventionally formed in the main member 5 provided with the driving device 4 for moving, and the heating cylinder 1 is mounted in the mounting hole 5a. Directly attached to the main member 5. The rotation drive device 3 and the movement drive device 4 form an injection unit. A hydraulic motor is used for the former and an injection cylinder is used for the latter.

[0003]

In the conventional heating cylinder mounting structure described above, the heating cylinders 1 having different outer dimensions (shapes) are used.
However, since the main member 5 provided with the drive unit 4 for moving, that is, the entire injection unit needs to be replaced, which is time-consuming, time-consuming, and expensive, it is actually replaced with another heating cylinder. There was a problem that I could not do it. This is remarkable in an injection molding machine for experiments or the like, which performs high-mix low-volume production.

It is an object of the present invention to provide a heating cylinder mounting structure for an injection molding machine, which enables easy exchange of various types of heating cylinders having different shapes and sizes.

[0005]

In order to achieve the above object, the present invention inserts an injection screw into a heating cylinder, the injection screw being axially moved by a moving driving device and rotated in a circumferential direction by a rotating driving device. In the injection molding machine described above, a plurality of mounting members including a lower body having a mounting groove of the heating cylinder on the upper surface are provided on a surface of the main member, to which the moving drive device is mounted, perpendicular to the axial direction of the heating cylinder. Removably attached with 1 bolt,
The upper body having the mounting groove for the heating cylinder on the lower surface is formed with mounting holes by both mounting grooves, and is detachably mounted on the upper surface of the lower body with a plurality of second bolts, and the ridge is formed on the outer peripheral surface.
The heating cylinder into the groove formed on the inner peripheral surface of the mounting hole.
The axial movement by the locking metastate crowded because fitting the ridges
It is configured to be detachably attached to the attachment hole .

[0006]

[Operation] When replacing the heating cylinder used up to now with another heating cylinder, loosen the second bolt and move the upper body from the lower body to the upper body.
The heating tube that had been used until then, and attach the heating tube
After removing from the main body, loosen the 1st bolt
Remove from the member. Next, attach other separately prepared mounting members.
Attach it to the main member and install a new heating tube in the mounting groove on the lower body.
Wear the upper body on top of the lower body and fix the heating cylinder.
It When replacing the heating barrel, attach the heating barrel
Up and down without moving the body horizontally in a limited narrow space
Since it is only necessary to move it to
I can. In addition, the mounting member is in the axial direction of the heating cylinder.
Since it is bolted to the surface of the vertical main member,
Move the mounting member slightly along the above vertical surface of the main member.
The core of the heating cylinder can be accurately and easily taken out by
You can

[0007]

1 to 3 show an embodiment of the present invention.
In these figures, the same members and the like as those in FIGS. 4 and 5 are designated by the same reference numerals, and detailed description thereof will be omitted.

The main member 5 is attached to the base 7 together with the frame 6. A pair of slide bars 8, 8 and a pair of screw shafts 9, 9 are provided between the main member 5 and the frame 6 in parallel and horizontally. Each screw shaft 9 receives hydraulic pressure or rotation of an electric motor (not shown) by a gear 10 and rotates in the circumferential direction in synchronization with each other.

A pair of movable members 12 and 13 are provided between the pair of slide bars 8 and 8 so as to be movable left and right in FIG. The one movable member 12 is provided with screw shafts 9, 9
Is movably attached to the left and right shaft portions 9a, 9a, and the other movable member 13 is screw portions 9b, 9b of the screw shafts 9, 9.
The nut members 14 and 14 are screwed and attached to. The pair of movable members 12 and 13 support a rotation drive device 3 including hydraulic pressure or an electric motor, and the rotation drive device 3 and the injection screw 2 are connected to each other by the rotation of the pair of screw shafts 9 and 9. Move left and right with. Injection screw 2
The linear sensor 15 detects the amount of movement such as. Each screw shaft 9 and the movable members 12, 13 and the like constitute the moving drive device 4. The injection screw 2 is detachably coupled to the output shaft 3a of the rotation drive device 3 via a coupling 16.

Reference numeral 17 is a heating cylinder support. The heating cylinder support 17 includes a board-shaped mounting portion (mounting member) 18 and a mounting portion 19. The mounting portion 18 is from FIG. 1 and FIG.
As can be seen, the heating cylinder 1 is detachably attached to the surface of the main member 5 perpendicular to the axial direction of the heating cylinder 1 with a plurality of bolts 20, and the heating cylinder 1 is detachably attached to the attachment portion 19. Mounting part 1
Reference numeral 9 is a divided structure, and is composed of a lower body 19a integrally provided on the mounting portion 18 by means such as welding, and an upper body 19b detachably attached to the lower body 19a by a plurality of bolts 21. Has been done. The lower body 19a is
On the upper surface and on the lower surface of the upper body 19b ,
Individually have a semicircular shape of the mounting groove 19f, the 19 g, in the coupling state by their bolt 21 mounting groove 19f, 19
The mounting hole 19c is formed by g .

The shape of the mounting hole 19c is matched with the outer shape of the heating cylinder 1. The heating cylinder 1 is mounted in the mounting hole 19c by fitting the protrusion 1a formed on the outer peripheral surface thereof into the concave groove 19d formed on the inner peripheral surface of the mounting hole 19c. A hopper (not shown) is detachably attached to the upper body 19b by a bolt or the like, and pelletized solid resin is charged into the heating cylinder 1 through the charging hole 19e. The heating cylinder support 17 is prepared for each type of heating cylinder 1.

Next, the operation of the heating cylinder mounting structure of the injection molding machine according to the present invention constructed as above will be described. When replacing the heating cylinder 1 with another heating cylinder, the bolts 21 are loosened to separate the upper body 19b of the heating cylinder support 17 from the lower body 19a, and the coupling 16 is used to eject the injection screw 2
After removing the heating cylinder 1 used up to that time from the heating cylinder support 17, loosen the bolt 20 to attach the mounting portion 1
8 is removed from the main member.

Next, the mounting portion 18 of the heating cylinder support 17 prepared for the heating cylinder to be used from now on.
Is attached to the main member 5 with the bolt 20, the heating cylinder 1 to be used is placed on the lower body 19a, and the upper body 19b is attached to the lower body 19a with the bolt 21. By this operation, the heating cylinder 1 is attached to the mounting hole 19c, and the heating cylinder support 1
It is fixed at 7. The injection screw 2 is coupled to the output shaft 3a by a coupling 16. The removing procedure and the assembling procedure of the heating cylinder 1 are not limited to the above, and are arbitrary.

The structure and types of the rotation driving device 3 and the movement driving device 4 are not limited to those shown in the figure, and the rotation driving device 3 and the movement driving device 4 are arbitrary, such as using an injection cylinder for the movement driving device 4 as shown in FIG.

[0015]

As described above, in the heating cylinder mounting structure of the injection molding machine according to the present invention, the injection screw heated in the axial direction by the moving drive device and rotated in the circumferential direction by the rotating drive device is heated. In the injection molding machine inserted in the cylinder,
A mounting member having a lower body having a mounting groove of the heating cylinder on its upper surface is detachably mounted on a surface of the main member, to which the moving drive device is mounted, perpendicular to the axial direction of the heating cylinder by a plurality of first bolts. And an upper body having a mounting groove for the heating cylinder on the lower surface forms mounting holes with both mounting grooves and is detachably mounted on the upper surface of the lower body with a plurality of second bolts.
Heating cylinder forming a ridge on an outer peripheral surface, the inner periphery of the attachment hole
Since it is configured to detachably attached to the attachment hole in a state of being stopped axial movement crowded because fitting the protrusion into the groove formed in the surface, upon replacement of the heating cylinder, the heating Since the cylinder, the mounting member, and the upper body need only be moved up and down without moving horizontally in a limited narrow space, the replacement work can be performed quickly without any trouble. Further, since the mounting member is mounted on the surface of the main member perpendicular to the axial direction of the heating cylinder with a bolt, the core of the heating cylinder is moved by slightly moving the mounting member along the vertical surface of the main member. It can be put out accurately and easily. Therefore, various types of heating cylinders having different shapes and sizes can be easily exchanged for multi-product small-quantity production, experiments, etc., and the structure is simple and easy to carry out.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a heating cylinder mounting structure of an injection molding machine according to the present invention.

FIG. 2 is a sectional view of the main part of the same.

FIG. 3 is a plan view of a heating cylinder mounting structure with a part broken away.

FIG. 4 is a front view showing a conventional heating cylinder mounting structure.

FIG. 5 is a plan view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heating cylinder 2 Injection screw 3 Driving device for rotation 4 Driving device for movement 5 Main member 17 Heating cylinder support

Claims (1)

[Scope of utility model registration request] 1. An injection molding machine in which an injection screw (2) axially moved by a moving drive device (4) and circumferentially rotated by a rotating drive device (3) is inserted in a heating cylinder (1). In the lower part of the main member (5), to which the moving drive device (4) is attached, the mounting groove (19f) of the heating cylinder (1) is provided on the surface perpendicular to the axial direction of the heating cylinder (1). A mounting member (18) having a body (19a) is detachably mounted by a plurality of first bolts (20), and an upper body (19b) having a mounting groove (19g) for the heating cylinder (1) on the lower surface is provided on both sides. A mounting hole (19c) is formed by the mounting groove (19f, 19g) and is detachably mounted on the upper surface of the lower body (19a) by a plurality of second bolts (21) and the outer peripheral surface is
The heating cylinder (1) having a ridge (1a) formed on the upper side of the heating groove (1d) is located above the groove (19d) formed on the inner peripheral surface of the mounting hole (19c).
Heating cylinder mounting structure of the injection molding machine, characterized in that in a state of being stopped axial movement crowded because fitting the serial ridges (1a) detachably attached to the mounting hole (19c).