JPH086496Y2 - Crushing equipment for resin molding unnecessary products - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a crushing device for resin molding unnecessary products, and mainly for crushing spools, runners, etc. as unnecessary products generated when making plastic products with an injection molding machine etc. Used for.

[0002]

2. Description of the Related Art As a conventional device of this type, for example, the one-shaft type device disclosed in Japanese Utility Model Publication No. 61-3461 is known.

In the device disclosed in this publication, an S-shaped rough crushing blade c and a smaller comb-like crushing blade d are mounted on a single horizontal drive shaft b held by a machine frame a. Each of them is fixed in a skewer-like shape, and the rough crushing blade c and the fixed comb blade f are attached to a receiver e provided at each position corresponding to the substantially lower half of the rough crushing blade c.
The crushed material crushed by means of is held, and the crushed material crushed by the receiver e is returned again to the charging port g at the upper part of the machine frame, and by the fine crushing blade d and the fixed comb blade f. As the crushed material of the crushed material, the crushed material of the crushed material that has passed between the crushing blade d and the fixed comb blade f is discharged from each discharge port h provided at each position corresponding to the lower side of the crushing blade d. It was taking out.

[0004]

However, when rough crushing is performed by the S-shaped rough crushing blade c and the fixed comb blade f, the S-shaped rough crushing blade c has a structure that is open to the upper side. When a large amount of unnecessary plastic products are supplied at one time from the charging port g, they directly enter the concave portions of the rough crushing blade c, which increases the load on the rough crushing blade c and the fixed comb blade f. For this reason, there is a possibility that an overload acts on the motor connected to the drive shaft b to stop or damage the motor during operation.

Further, since the receiver e provided at each position on the lower side of the rough crushing blade c has a bag shape, the crushed material crushed by the rough crushing blade c drops downward in the receiver e. However, the crushed material crushed to an appropriate size and held in the receiver e cannot be dropped from the receiver e. For this reason, the crushed material that has entered the receiver is pulverized and is not suitable for remanufacturing, and unnecessary crushing is performed.

The present invention has been made in view of these circumstances, and prevents an overload from acting on a motor during crushing by a rough crushing blade to cause a trouble, and an appropriate size held in a receiver. The object of the present invention is to provide a crushing device for resin-unnecessary products, which can improve the crushing efficiency by dropping the crushed material from the receiver.

[0007]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, in which a casing has a holding space for holding a crushed object, and a drive shaft is horizontally provided in the casing. The drive shaft is alternately provided with a small-diameter finishing rotary blade for finish crushing and a large-diameter rotary plate for rough cutting having a larger circumference, and the finishing rotary blade is suitable for finish crushing on the outer circumference. The crushing blade is formed in a comb tooth shape, the large-diameter rotary plate, a window opening is formed on the outer diameter side portion from the blade edge of the finishing rotary blade, the peripheral edge of this window opening is formed in the opening cutting blade, the casing upper part Crushing of resin molding unnecessary products characterized in that a fixed blade adjacent to the cutting blade of the finishing rotary blade and a fixed blade corresponding to the opening cutting blade of the large diameter rotary plate are provided on the front side in the rotation direction of the drive shaft. It is a device. The casing is preferably configured by being divided into an upper casing and a lower casing. The holding space formed in the upper part of the casing is preferably arranged with a plate provided with a fixed blade on the front side in the rotation direction of the drive shaft in an inclined manner, and on the rear side in the rotation direction of the drive shaft with a finishing rotary blade. Comb-blade plates adjacent to both of the large-diameter rotary plates are fixed and configured. A window opening is formed in the large-diameter rotary plate, and a peripheral cutting blade is provided on the peripheral edge of the large-diameter rotary plate, which is suitable for cutting a long object to be crushed. Also, on both sides of the large-diameter rotary plate located below the drive shaft, semi-annular side plates are provided by being held by the casing, and the side plate has a semi-circular peripheral portion with a window opening of the large-diameter rotary plate. If a cutout that partially overlaps with the large-diameter rotary plate is roughly cut, and if a crushed material larger than the target crushed material remains in the window opening, finish rotation again. It is suitable because it can be returned to the top of the blade and the finely crushed material can be dropped as it is to prevent pulverization.

[0008]

The object to be crushed supplied to the holding space at the upper part of the casing, which comes into contact with the circumference of the large-diameter rotary plate, comes into contact with the circumference of the large-diameter rotary plate and then falls within the outer diameter of the large-diameter rotary plate. Get in. At this time, when the peripheral cutting blade is formed on the outer periphery of the large-diameter rotary plate, the crushed object is cut by the peripheral cutting blade and the fixed blade and enters the outer diameter of the large-diameter rotary plate.

On the finishing rotary blade, the crushed object that has not been rough-cut or cut by the peripheral cutting blade of the large-diameter rotary plate and the crushed object that has fallen directly due to its short length are supplied. . While these crushed objects are gradually moved in the inner diameter direction, they enter the window opening of the large-diameter rotary plate due to vibration or collision of the crushed objects. The object to be crushed that has entered the window opening is cut by the opening cutting blade and the fixed blade on the peripheral edge of the window opening, and a part of the object is held in the window opening and moved to the lower portion of the casing. The crushed object in the window opening that has been moved downward is dropped directly below the casing. When side plates are formed on both sides of the large-diameter rotary plate and a plurality of notches are provided in the side plate, the side plates are dropped to the outside from the plurality of notches formed in the side plate.

The crushed object shortened by being cut by the peripheral cutting blade and the opening cutting blade of the large-diameter rotary plate is
It is crushed by the finishing rotary blade and the comb-shaped fixed blade, held by the finishing rotary blade and moved below the casing, and then discharged below the finishing rotary blade.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of the present invention. FIG. 1 shows a vertical section of the device taken along a vertical plane passing through an axis. FIG. 2 shows a vertical section taken along a line II-II perpendicular to the axis. FIG. 3 is a plan view of the apparatus viewed from above. FIG. 4 is a side view seen from the right side of FIG.
As shown in FIGS. 1 and 2, the crushing apparatus of this embodiment has a drive shaft 2 supported by a casing 1, a large-diameter rotary plate 3 and a finishing rotary blade 4 attached to the drive shaft 2, and facing them. It is mainly composed of a comb-shaped fixed blade 5 provided.

As shown in FIG. 4, the casing 1 includes an upper casing 1 whose upper end opening is connected to a hopper (not shown).
a and a lower casing 1b which is held by the pedestal 20 and holds the drive shaft 2 horizontally. The upper casing 1a is openably and closably coupled to the lower casing 1b by a hinge pin 8 attached to one side surface of the lower casing 1b. The upper casing 1a during operation is
It is fixed to the lower casing 1b by a tightening member 9 attached to the other side surface of the lower casing 1b.

Both ends of the drive shaft 2 are held on both end faces of the lower casing 1b by bearings 11, 11 protected by seal flanges 10, 10 as shown in FIG. On the drive shaft 2 in the casing 1, three finishing rotary blades 4 and two large-diameter rotary plates 2 are alternately fixed.
The finishing rotary blade 4 includes a large number of crushing blades 4 a on each circumferential surface divided by the plurality of kerfs 41. The large-diameter rotary plate 4 is formed with a large number of cutting blades 3a having substantially the same blade height as the crushing blades 4a on the circumference larger than the finishing rotary blade 4.

The large-diameter rotary plate 3 is provided with one to several window openings 3b on the outer diameter side of the finishing rotary blade 4. In the window opening 3b, the outer diameter side contour line 31 and the inner diameter side contour line 32 are both arcs, and the outer diameter side contour line 31 and the inner diameter side contour line 32 are
The rotating front side contour line 33 and the rotating rear side contour line 34 are continuous, and at least the rotating rear side contour line 34 forms a cutting blade. The inner diameter side contour line 32 has the same diameter as the cutting edge circle of the finishing rotary blade 4.

A holding space 6 for holding a V-shaped crushed object is formed in the upper casing 1a as shown in FIG. The holding space 6 is partitioned by the fixed blade 5 attached to the front side in the rotation direction and the comb blade plate 13 attached to the rear side in the rotation direction. The fixed blade 5 is divided at the central portion in the thickness direction of the large-diameter rotary plate 3 to be formed into a comb blade shape, and each of the divided fixed blades 5 having a comb blade shape has a large diameter with the finishing rotary blade 4. The screws 12, 1 are attached to the inclined wall surface 1c located on the front side in the rotation direction so as to face both of the rotary plates 3.
It is fixed by 2. Further, a comb blade plate 13 facing both the finishing rotary blade 4 and the large-diameter rotary plate 3 is fixed to the inclined wall surface 1d opposite to the inclined wall surface 1c by a plurality of screws 14.

On the other hand, in the lower casing 1b, side plates 15, 15 are arranged close to both axial sides of the lower halves of the large-diameter rotary plates 3, 3. Side plate 1
Reference numeral 5 denotes a semi-annular shape that surrounds the lower outer diameter of the finishing rotary blade 4, and is formed at the upper end of the lower casing 1b by outwardly projecting members 16 and 16 formed on both sides of the upper end of the side plate 15. Inward horizontal seats 17,17
It is screwed on.

The side plate 15 having a semi-circular outer periphery is
When the window opening 3b formed in the large-diameter rotary plate 3 is rotated right below, a plurality of notches that partially overlap with the window opening 3b are formed in the peripheral portion corresponding to the outer diameter side contour line 31 of the window opening 3b. 15
a is formed at intervals.

As shown in FIG. 5, each notch 15a of the side plate 15 has a contour line on the outer diameter side of the window opening 3b of the large-diameter rotary plate 3 on both sides from the center of thickness.
When it is inclined so as to become larger toward the side, it is provided on the side plates 15 on both sides, but as shown in FIG. 6, in the case of an inclined surface which is inclined in one direction, the window opening 3b is formed.
It suffices to form it only on the side plate 15 on the side where the angle becomes large.

Further, in the lower casing 1b, an opening 7 is provided so that the crushed material crushed by the plurality of finishing rotary blades 4 can be discharged. One end of the drive shaft 2 protruding from the casing 1 is connected to a gad motor 19 via a shaft joint 18.

Next, the operation of the apparatus will be described. When a plastic spool, runner, or the like, which is generated as an unnecessary product during injection molding, is supplied to the upper casing 1a of the operating machine, the supplied crushed material is fixed to the comb-shaped fixed blade 5
It is held in the holding space 6 formed by the comb blade plate 13.

Since the large-diameter rotary plate 3 is provided with a large number of fine cutting blades 3a on its circumference, long cutting objects are cut by the cutting blades 3a and the comb-shaped fixed blade 7. The crushed object and the originally short crushed object cut by the cutting blade 3a on the outer circumference of the large-diameter rotary plate 3 fall in the inner diameter direction. The falling crushed objects enter the window opening 3b of the large-diameter rotary plate 3 due to the vibration of the device and the collision of the crushed objects. Window opening 3b
The crushed material that has entered is the contour line 3 on the rotation rear side of the window opening.
It is cut by the cutting blade formed in 4 and the fixed blade 5.

Even when the object to be crushed is supplied onto the large-diameter rotary plate 3, the object to be crushed is supplied to the window opening 3b by a large number of crushing blades 4a provided on the outer periphery of the large-diameter rotary plate 3. After it hits, it is done gradually. As a result, rough cutting at the window opening 3b of the large-diameter rotary plate 3 is gradually performed after the material to be crushed is supplied, so that the gad motor 19 connected to the drive shaft 2 is used.
The load can be evenly distributed over the load, and overload can be prevented. Therefore, it is possible to prevent the running motor 19 from being stopped or damaged by an overload.

The crushed object roughly cut by the large-diameter rotary plate 3 moves onto the finishing rotary blade 4, and engages with a large number of crushing blades 4a formed around the finishing rotary blade 4. By the shearing action with the comb-shaped fixed blade 5, the crushing blade 4a is crushed into an appropriate size corresponding to the size of the crushing blade 4a, and is moved to the lower casing 1b side by the finishing rotary blade 4. Since the outlet 7 is provided at each position of the lower casing 1b corresponding to the finishing rotary blade 4, the crushed material crushed by the finishing rotary blade 4 is taken out of the casing 1 through the outlet 7.

Further, the large-diameter rotary plate 3 cut at the window opening 3b is held in the window opening 3b so as to be held in the lower casing 1.
Moved to side b.

Of the crushed materials cut by the window opening 3b of the large-diameter rotary plate 3, those of a small size are brought into contact with the window opening 3b when they are held in the window opening 3b and moved to the lower casing 1b side. It is taken out of the casing 1 through a plurality of notches 15a of the side plate 15 provided so as to partially overlap. The crushed material cut into a minute size can be taken out not only from the finishing rotary blade 4 but also by using the window opening 3b of the large-diameter rotary plate 3, so that the crushing efficiency of the apparatus is improved.

[0026]

According to the present invention, the following effects can be obtained.

In the crushing device for resin-unnecessary products according to the first aspect, the large-diameter rotary plate has the window opening formed on the outer diameter side of the finishing rotary blade, and a large amount of crushed material is supplied at one time. Even in the case of being crushed, since it hits the outer periphery of the large-diameter rotary plate, the crushed object can be gradually fed into the window opening of the large-diameter rotary plate and roughly cut. As a result, it is possible to prevent a load with a small fluctuation from acting on the motor and prevent the overload from acting, and it is possible to prevent troubles such as stopping and damage of the motor that occur when the overload acts.

When a cutting blade is formed on the outer circumference of the large-diameter rotary plate, when a long object to be crushed is supplied, it is cut by the cutting blade and the fixed blade and then guided to the window opening of the large-diameter rotary plate. Therefore, also in this respect, it is possible to prevent a large amount of crushed material from being supplied to the window opening at one time, which enables stable operation. In addition, if side plates are held on both sides of the lower part of the large-diameter rotary plate, and if a cutout that partially overlaps the window opening of the large-diameter rotary plate is formed in the peripheral portion of this side plate, the finely divided fine You can take out crushed pieces of size, without increasing the capacity of the motor,
It is possible to improve the pulverization efficiency of the device and prevent pulverization of the crushed material.

[Brief description of drawings]

FIG. 1 is a vertical side view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a plan view of FIG.

FIG. 4 is a right side view of FIG.

FIG. 5 is an enlarged sectional view of an essential part of an embodiment of a combination of a large-diameter rotary plate and a side plate.

FIG. 6 is an enlarged cross-sectional view of a main part of another embodiment of the combination of the large-diameter rotary plate and the side plate.

FIG. 7 is a plan view of a conventional example.

8 is a sectional view taken along line VIII-VIII of FIG.

9 is a sectional view taken along line IX-IX in FIG. 7.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 1a Upper casing 1b Lower casing 1c Rotation direction front side inclined wall surface 1d Rotation direction rear side inclined wall surface 2 Drive shaft 3 Large diameter rotating plate 3a Cutting blade 3b Window opening 4 Finishing rotary blade 5 Comb-shaped fixed blade 6 Holding space 7 Discharge port 13 Comb blade plate 15 Side plate 15a Notch

Claims (2)

[Scope of utility model registration request] 1. A casing is provided with a holding space for holding an object to be crushed, a drive shaft is horizontally provided on the casing, and the drive shaft has a small-diameter finishing rotary blade for finishing crushing and Large-diameter rotary plates for rough cutting with a large circumference are alternately provided.Finishing rotary blades are formed with comb-shaped crushing blades suitable for finish crushing on the outer circumference. A window opening is formed on the outer diameter side of the blade edge, and the peripheral edge of this window opening is formed as an opening cutting blade.Fixed near the cutting blade of the finishing rotary blade on the upper side of the casing on the front side in the rotation direction of the drive shaft. A crushing device for resin-unnecessary products, characterized in that a fixed blade corresponding to the blade and the opening cutting blade of the large-diameter rotary plate is provided. 2. The casing has an opening at an upper end and an outlet at a lower surface, a casing is provided with a drive shaft horizontally, and the drive shaft has a small-diameter finishing rotary blade for finish crushing. And large-diameter rotary plates for rough cutting having a larger circumference are alternately provided, and the large-diameter rotary plates have a window opening formed on the outer diameter side of the finishing rotary blade, and the opening cutting is performed on the periphery of the window opening. Along with the blade, a peripheral cutting blade is provided on the periphery of the large-diameter rotary plate, and semicircular side plates are provided on the casing on both sides of the large-diameter rotary plate located below the drive shaft, The side plate has a notch that partially overlaps with the window opening of the large-diameter rotary plate in the semicircular periphery, and both the finishing rotary blade and the large-diameter rotary plate are located on the upper side of the casing on the front side in the rotation direction of the drive shaft. A comb-shaped fixed blade close to This is a device for crushing resin-unnecessary products, in which a comb-blade plate that is close to both the finishing rotary blade and the large-diameter rotary plate is fixed on the rear side of the upper part of the casing in the direction of rotation of the drive shaft.