JP2529917Y2 - Screw position display device 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 screw position display device of an injection molding machine having a plurality of injection devices used for multi-color molding of synthetic resin and molding of different materials.

[0002]

2. Description of the Related Art A screw position display device is a device for stably obtaining a good synthetic resin injection-molded product, and an analog of a filling operation condition and a plasticizing operation condition which are one of injection molding conditions. It is a device that can be visually checked. The structure of the display device is such that the screw is rotatably held and the case is made reciprocable by the injection piston. The indicator is directly fixed by bolts and the like, and the scale is fixed to the slide relative to the case. It is composed of

In an injection molding machine having a plurality of injection devices, it is difficult to confirm the operation status by the indicator except for the injection device on the operation side. Therefore, a position reading device is attached to the case and the slide and a CRT or the like is used. Digital display was performed by a display device to check the operation status.

[0004]

[Problems to be solved by the invention] In an injection molding machine,
In order to confirm the filling operation state and the plasticizing operation state for stable molding, the position of the case cannot be sufficiently grasped by a digital display that displays only numbers. If there is no difference between the indicated numbers, it cannot be grasped. Also, whether the injection speed is relatively fast or slow cannot be determined by a change in the number displayed on the digital display. Further, in a molding method in which the filling operation is performed almost at the same time, such as molding of different materials,
Since the operation timing and the injection speed of each injection device become very important, it is necessary to concentrate the display devices of the screw positions of each injection device to display the relative relationship. The present invention is intended to solve the above-mentioned conventional problems.

[0005]

Means for Solving the Problems The present invention for this purpose, in two of the injection apparatus is arranged in a substantially horizontal position the injection molding machine, and the operation-side injection apparatus, it is disposed on each of the side opposite the operation side injection unit an injection device Conversion means for converting the linear movement of the inner screw into rotational movement, and the operating side and the non-operating side, respectively, arranged on the operating side
Of a display device and which displays the amount of linear movement of the injection device screw, by the rotating member of the operating side and opposite the operation side, respectively of the conversion means for connecting a flexible cable, the display device 2 in the The linear movement amount of the screw of the injection device is displayed, and this is used as means for solving the problem.

[0006]

The toothed belt or rack fixed to the case also operates by the same amount due to the reciprocating operation of the case, which is the filling and plasticizing operation, and the toothed pulley or pinion gear meshed with the teeth of the toothed belt or rack, Rotate by the amount corresponding to the amount of movement. The rotation is transmitted to the toothed pulley or pinion gear provided on the display unit by a flexible shaft attached to the shaft of the toothed pulley or pinion gear. The rotation transmitted to the display unit is converted into a reciprocating motion by the reverse action, so that the indicator attached to the toothed belt or the rack can perform the same operation as the reciprocating operation of the case.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an embodiment of the present invention; FIG. First, in FIGS. 1 and 2, A and B are injection devices arranged in a horizontal V-shape. A guide 3 is attached to a slide 2 of the injection device B, and can move along the guide 3. An L-shaped holder 4 is fixed to a bearing case 1 holding a screw (not shown) rotatably by a bolt 14. Reference numeral 6 denotes a toothed belt which is sandwiched between the holder 4 and the plate 5 and held by bolts 15. Further, the toothed belt 6 is hung between the toothed pulley 7 and the auxiliary toothed pulley 8, and when the bearing case 1 reciprocates, the toothed pulleys 7 and 8 rotate. A shaft having a key for transmitting rotational torque (not shown) is inserted into the toothed pulley 7, and both ends of the shaft are held by bearings 12 capable of adjusting the tension of the toothed belt 6. , One end of a bendable cable shaft 13 for transmitting rotation to an indicator unit for the injection device B on the operation side described later is fixed by a screw. The toothed belt 6 may be a rack, and the toothed pulleys 7 and 8 may be pinion gears. The bearing 12 is fixed by a double nut (not shown) to a bracket 9 fixed by a bolt 17 at a position where the bearing case 1 on the side surface of the slide 2 does not interfere with the holder 4 when the bearing case 1 is most advanced. The auxiliary toothed pulley 8 is rotatably held on a shaft 11,
Is screwed and fixed to a bracket 10 fixed by bolts 16 at a position where the bearing case 1 does not interfere with the holder 4 on the side surface of the slide 2 at the last retreat.

On the other hand, on the back of the injection cover 18 attached to the operation side of the injection device A, as shown in FIG.
a, auxiliary toothed pulley 8a, bearing 12a, shaft 11a
It is mounted in the same manner as described above. Brackets 9 a and 10 a corresponding to the bracket 9 and the bracket 10 are welded to the injection cover 18. Further, plates 19, 20 are provided on the toothed belt 6a.
Are mounted by bolts 21 so as to sandwich the toothed belt 6a. On the plate 19, an indicator 22 for indicating the position of the bearing case of the injection device B is provided.
It is fixed with small screws 23. The indicator 22 passes through the opening C of the injection cover 18 and is visible from the surface of the injection cover 18. In order to stabilize this visual movement, a guide rod 24 welded to the back surface of the injection cover 18 is moved up and down. It is sandwiched from the direction.

The cable shaft 13 is bendable, and the shaft end of the shaft inserted into the toothed pulley 7 of the injection device B and the shaft inserted into the toothed pulley 7a attached to the injection cover 18. Are connected through a gap of the injection device A. As a result, the rotating operation transmitted by the cable shaft 13 can reciprocate the indicator 22 which is made to move together with the toothed belt 6a via the toothed pulley 7a.

[0010] As shown in FIG.
And the needle tip of the indicator 25 directly attached to the injection device A below the indicator 22 by means not shown, the bearing cases 1 and 2 of the injection device A and the injection device B.
It is assembled so as to be aligned at the most advanced position D of 1a,
The scale 26 is adhesively fixed to the injection cover 18 as a scale position where the most advanced position D is zero. Further, by disposing the indicators 25 and 22 of the injection devices A and B on the injection cover 18 on the operation side of the injection device A,
The scale 26 allows the positions of the indicators 25 and 22, that is, the positions of the injection devices A and B to be easily read.

As described above, the feature of the present invention is that the injection device other than the operation side also displays the screw position of an analog display attached to a general injection molding machine, so that the screw is rotatably held. In addition, a toothed belt 6 is fixed to a case 1 for transmitting a resin filling and plasticizing operation to a screw via a fixture, and the case 2 is meshed with the toothed belt 6 on a slide 2 which enables the case 1 to be guided reciprocally. Pulley 7,
8 is rotatably held. On the other hand, the same pulleys 7a, 8a as the slide 2 are rotatably held on the display unit, and the same toothed belt 6a meshes with the pulleys 7a, 8a. Indicators 22 and 25 are attached to the belt 6a as arrows indicating screw positions operable along guides provided on the display unit. A toothed pulley 7 provided on the slide 2
And the rotating shaft of the toothed pulley 7 provided on the display unit are connected by a cable shaft 13 that can freely rotate and transmit rotation.

[0012]

[Effect of the Invention] As described in detail above, according to the present invention, the screw position of each injection device and the actual state of the injection operation can be displayed collectively at a desired place, and can be confirmed without moving from the operation position of the injection molding machine. In addition, adjustment of molding conditions of each injection device becomes easy. Further, by aligning the base points of the indicators indicating the screw positions, the relationship between the injection operations can be easily understood.

[Brief description of the drawings]

FIG. 1 is a plan view of an injection device according to an embodiment of the present invention.

FIG. 2 is a perspective view of an injection device B in FIG.

FIG. 3 is a perspective view of a back surface of an injection cover of an injection unit A in FIG. 1;

FIG. 4 is a sectional view of the indicator section in FIG. 3;

FIG. 5 is a view as viewed in the direction of the arrow Z in FIG. 1;

[Explanation of symbols]

 A, B Injection device 1 Bearing case 2 Slide 3 Guide 6, 6a Toothed belt 7, 7a, 8, 8a Toothed pulley 9, 10, 9a, 10a Bracket 11, 11a Shaft 12, 12a Bearing 13 Cable shaft

Claims (1)

(57) [Scope of request for utility model registration] In an injection molding machine in which two injection devices are arranged in a substantially horizontal position, a linear movement of a screw in an injection device provided in each of an operation-side injection device and a non-operation-side injection device is converted into rotational movement. Conversion means, and the operation side arranged on the operation side
By a having a display unit for displaying the amount of linear movement of the side opposite the operation side respectively the injection device screw in, connect the rotating member of the operating side and opposite the operation side respectively of converting means of a flexible cable, the A screw position display device for an injection molding machine, wherein a display device displays a linear movement amount of a screw of two injection devices.