JPH0735081B2 - Foreign material removal device for T-die - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foreign matter removing device for a T-die, and more particularly to a new improvement for quickly removing foreign matter such as eye drops adhering to the lip portion of the T-die without manual intervention. .

[0002]

2. Description of the Related Art This type of T that has been generally used in the past
As a method for removing foreign matter such as die die,
There are removing means by hand and air blowing means, and in the case of removing means by hand, the extrusion from the lip part is interrupted and the removal is done manually. Further, in the case of the air blowing means, air is strongly blown against the lip portion, and the foreign matter is blown away and removed by the air force.

[0003]

Since the conventional foreign matter removing device for the T-die is constructed as described above, the following problems exist. That is, in the case of the above-mentioned manual removal work, it is extremely dangerous work, and the work efficiency is low, and therefore the molding cycle is reduced.
Further, in the case of the air spraying means, it is difficult to completely remove the solidified foreign matter only by the air force.
It was necessary to do post work manually.

The present invention has been made in order to solve the above problems, and in particular, it is designed to quickly remove foreign matter such as eye drops adhering to the lip portion of a T die without human intervention. An object is to provide a foreign matter removing device for a die.

[0005]

SUMMARY OF THE INVENTION A foreign matter removing device for a T-die according to the present invention is slidably provided on a pair of lip portions forming a lip opening of the T-die to remove a foreign matter. A moving body, a pair of holding members for holding the respective sliding bodies via compression springs, and respective holding bodies connected to the respective holding members are provided to the T die in order to move them along the longitudinal direction of the T die. This is a configuration including a pair of rails provided.

More specifically, each of the sliding bodies is operably provided on the holding body.

[0007]

In the foreign matter removing device for the T-die according to the present invention, by moving each holding body through the moving means, the pair of sliding bodies provided on each holding body slides on the lip portion. The foreign matter such as eye drops and the like adhering to the portion is completely removed by this sliding body.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a foreign matter removing device for a T-die according to the present invention will be described in detail below with reference to the drawings. Figure 1
1 to 3 show a foreign matter removing device for a T-die according to the present invention. FIG. 1 is a front view showing the entire structure, and FIG.
FIG. 3 is a bottom view of FIG. 3, and FIG. 3 is an enlarged view of a main part of FIG.

Reference numeral 1 in the drawing is a T-die, and a lip opening 2 having a predetermined gap between the lip portions 1A and 1B for extruding a molten resin is provided at a central position of the T-die 1. Are formed.

A pair of holders 4 and 4a are linearly movably provided via linear bearings 5 on a pair of rails 3 and 3a as guides provided on the lower surface 1a of the T-die 1. A pair of holding rods 7 and 7a are provided in guide holes 6 and 6a formed in the holding bodies 4 and 4a in a direction orthogonal to the longitudinal direction of the rails 3 and 3a.

A pair of slide members 1 are attached to the inner ends 8, 8a of the holding rods 7, 7a via a pair of holding members 9, 9a.
0, 10a are provided, and the sliding bodies 10, 10 are provided.
A has a substantially L-shape as a whole, and is provided in the holding holes 11 and 11a formed in the holding bodies 9 and 9a so as to be vertically movable.

The upper surfaces 12, 1 of the respective sliding bodies 10, 10a
2a is slidably joined in the vicinity of the lip opening 2 of each lip portion 1A, 1B of the T die 1, and each sliding body 10, 10a is slightly smaller than the gap of the lip opening 2. Are opposed to each other with a gap.

The lower surfaces 13 of the sliding bodies 10 and 10a,
13a is an adjustment screw body 1 in each of the holding holes 11 and 11a.
Each compression spring 15 provided via 4, 14a,
The holding holes 11 and 1 are biased by 15a.
It is held in 1a.

Outer ends 16, 16 of the holding bars 7, 7a
The projecting shafts 17 and 17a provided on a pass through the fixing plates 18 (only one of which is disclosed) provided on the holding bodies 4 and 4a in an operable state. The connecting plates 19 and 19a provided on the outside are pierced in a freely operable state.

Stoppers 21 and 21a made of nuts are screwed into the screw portions 20 and 20a formed at the projecting ends of the projecting shafts 17 and 17a, respectively.
The relative positions of the holding bodies 4, 4a and the holding bars 7, 7a can be changed by arbitrarily adjusting the axial positions of the 1, 21a.

Further, the springs 22 (only one of which is disclosed) are interposed between the holding rods 7 and 7a and the fixing plates 18 in the guide holes 6 and 6a, respectively. 7 and 7a are biased in the direction of the lip port 2, and the stoppers 21 and 21a have a function of restricting the position of the holding rods 7 and 7a in the biasing direction.

Between the connecting plates 19 and 19a and the holding bodies 4 and 4a, the screw rods 23 and 23a and the nuts 2 are provided.
4, 24a and 25, 25a are provided, and these screw rods 23, 23a, nuts 24, 24a and 25,
25a, holding bodies 4, 4a and connecting plates 19, 19
It is configured so that the position adjustment with respect to a can be performed.

As shown in FIG. 2, the holding bodies 4 and 4a are reciprocally mounted on rails 3 and 3a formed along the longitudinal direction of the T-die 1, respectively. A pair of reels 30, 30 are provided at both end positions of 3, 3a.
a is provided.

Each reel 30, 30a and each holder 4,
4a is configured to be interlockable with each other via a pair of wires 31 and 31a, and the holding bodies 4 and 4a are configured to move in directions of arrows A and B different from each other.

Four stoppers 32 are provided on the lower surface 1a of the T die 1 so that the fixed positions thereof can be adjusted, and each slide 32 is slidable according to the width of a resin sheet (not shown) extruded from the lip port 2. The sliding range of the moving bodies 10 and 10a can be freely changed.

One reel 30a of the reels 30 and 30a has a guide roller 33 and belts 34 and 3.
5 is connected to a moving means 37 including a motor or the like provided on the fixed body 36 through 5, and by rotating the moving means 37, the sliding bodies 10 and 10a are connected via the holding bodies 4 and 4a. Can be moved as shown by arrows A and B.

Next, in a state where the resin sheet is actually extruded from the lip port 2, each lip 1A, 1B is formed.
When a foreign substance (not shown) such as a messenger is formed in the vicinity of the lip opening 2 of the above, the moving means 37 is operated to reciprocate the holding bodies 4 and 4a along the rails 3 and 3a. Since the sliding bodies 10 and 10a slide on the lower surfaces of the lip portions 1A and 1B, the foreign matter described above can be easily and reliably removed.

In addition, when the foreign matter is solidified and hardened when the sliding bodies 10 and 10a are slid, the sliding clearances of the sliding bodies 10 and 10a in the vertical direction in FIG. Is performed by the compression springs 15 and 15a, and the lateral escape is performed by the springs 22 and the protruding shafts 17 and 1.
7a is projected from each connecting plate 19, 19a. It should be noted that the sliding bodies 10 and 10a described above are not limited to the configuration that they move in mutually different directions as shown in the embodiment, but they can also be configured to move in the same direction.

[0024]

The foreign matter removing device for the T-die according to the present invention is
Since it is configured as described above, the following effects can be obtained. In other words, foreign matter such as eye drops formed in the vicinity of the lip opening of the lip portion can be easily and surely removed by the movement of each sliding body, and the danger to the operator is almost zero compared to the conventional method. be able to. Therefore, a safe and highly efficient molding cycle can be achieved and a great contribution can be made to the improvement of productivity.

[Brief description of drawings]

FIG. 1 is a front view showing a foreign matter removing device for a T-die according to the present invention.

FIG. 2 is a bottom view showing the bottom surface of FIG.

FIG. 3 is an enlarged view showing a main part of FIG. 2 in an enlarged manner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 T die 1A, 1B Lip part 3,3a Guide body (rail) 4,4a Holding body 10,10a Sliding body 37 Moving means

Claims (1)

[Claims] 1. A pair of sliding bodies (10, 10) slidably provided on a pair of lip portions (1A, 1B) forming a lip opening (2) of a T-die (1) for removing foreign matters. 10a) and each of the sliding bodies (10, 10
a) a pair of holding members (9, 9a) holding the compression springs (15, 15a) and the holding bodies (4, 4a) connected to the holding members (9, 9a). A pair of rails (3, 3) provided on the T-die (1) for moving along the longitudinal direction of the T-die (1).
3a) and a foreign matter removing device for a T-die.