JPH11197531A - Coarse crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coarse crusher by which hard lumps are coarsely crushed to such size as crushed material can be treated by a pulverizer and which has such construction that in consideration of dealing with many kinds of powder, cleaning can be performed in a short time and easily and which brings reduction of work burdens and improvement of work efficiency and which is a compact device and which will be realized to be automated including the next process in future. SOLUTION: Relating to a coarse crusher having a breaking part 20 wherein material to be crushed is made to fall to crush it and/or it is crushed by a press and a crushing part 30 wherein the material to be crushed is crushed by screws and which breaking part 20 and crushing part 30 being able to operate at the same time and also being integrated, the breaking part 20 is provided with a moving pressure plate 4 horizontally moved by a press, a fixed pressure plate 5 being at a position opposite to the moving pressure plate 4, and a crushing blade 5 in the lower end part of the moving pressure plate 5. And the crushing part 30 is provided with a driving crushing screw 7 positioned below the press breaking part 20 and interlocked with the press, and a driven crushing screw 8 arranged in parallel to the driving crushing screw 7 and rotated in synchronism with the driving crushing screw 7 receiving the rotation of the driving crushing screw 7 by a gear.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coarse pulverizing apparatus, and more particularly to a coarse pulverizing apparatus for coarsely pulverizing hard lump as a raw material of a hard material such as tungsten carbide.

[0002]

2. Description of the Related Art Tungsten carbide (hereinafter WC)
The powder is manufactured by filling a mixed powder of tungsten and carbon, which are raw materials, into a container called a filling case, heat treating in a furnace, and then pulverizing. Since this mixed powder becomes a hard lump when heat-treated in a furnace, coarse pulverization and subsequent fine pulverization are required in the next step of the heat treatment step.

FIG. 4 is a diagram showing a schematic configuration of a conventional apparatus for performing coarse pulverization. FIG. 5 is an enlarged view showing a jaw crusher of a portion B in FIG. FIG. 6 is a sectional view schematically illustrating the operation of the jaw crusher of FIG. Referring to FIG. 4, the apparatus 50 includes a raw material container 51 for manual pulverization for performing crushing manually and a device for performing mechanical pulverization. The apparatus for performing mechanical pulverization includes a chute 52 for input, a gantry 53 for rock drill, an input feeder 54, a jaw crusher input port 55,
The jaw crusher 56 and the jaw crusher receiver 62 are provided.

[0006] The procedure for coarse pulverization using this apparatus is as follows. First, as shown in FIG.
An operator manually plucks a coagulated powder (hereinafter, referred to as a work) 71 of a WC semi-finished product having a size of 00 × 200 × 300 (mm) in a raw material container 51 for manual pulverization on a rock drilling gantry 53. A size (up to 80 × 80 × 80) that can be processed by a coarse crusher (hereinafter referred to as a jaw crusher) using a rock drill
mm). The work 71 crushed in the above process is
The raw material container 51 for manual pulverization is turned over as shown by an arrow 72 to have a maximum height of 1500 mm and a minimum height of 1000 mm.
Is supplied to a jaw crusher input port 55 through an input chute 52 having a side wall of No. and a feeder 54 having a length of 500 mm.

Referring to FIGS. 5 and 6, a jaw crusher 56 is provided with a moving tooth plate 58 at an angle to a fixed tooth 57. One end of the moving tooth plate 58 is connected to a swing jaw. The other end is supported by a toggle plate 60 and a tension rod 61.

As best shown in FIG. 6, the work supplied to the jaw crusher 56 causes the moving tooth plate 58 to swing with respect to the fixed teeth 57 by the action of the swing jaw 59 as shown in an operation locus 65. Before the coarse pulverization, as shown by the reference numeral 63, the pulverizer is sandwiched between the fixed teeth 57 and the moving tooth plate 58, and has a size (up to 10 × 10x1
0 mm), and is in a state after coarse pulverization indicated by reference numeral 64. Further, the pulverized work enters the jaw crusher receiver 62 shown in FIG. 4 and is transported to the next step.

[0007]

However, when the above-mentioned jaw crusher 56 is used, the operator manually removes the work in the raw material container 51 for manual pulverization on the rock drill base 53 by using a manual rock drill. Used, jaw crusher 5
It is necessary to grind to a size (up to 80 × 80 × 80 mm) that can be processed in Step 6. This is hard work for the worker, and is a heavy work. In addition, since this operation requires a worker to be indispensable, the work efficiency is low, and this is a problem that will be a problem when considering automatic unmanned operation in the future.

The work pulverized by the above operation is turned over the raw material container 51 for manual pulverization, passes through the input chute 52 and the input feeder 54, and passes through the jaw crusher input port 55.
Are supplied, but it is necessary to clean them all when changing the product type. In order to receive the work pulverized in the above-mentioned process without spilling at one time, the input chute 52 has a height of about 1000 mm, and the input feeder 54 for constant supply to the jaw crusher has a length of about 500 mm.
There is very wide cleaning area. Further, since the cleaning from the charging chute 52 to the jaw crusher charging port 55 is under the manual rock drill gantry 53, it is difficult to perform, and a considerable amount of time is spent, resulting in poor work efficiency. In addition, since the jaw crusher body has a narrow opening, it is very difficult and time-consuming to remove the work adhered to the fixed teeth 57 and the moving tooth plate 58, and this has caused the mixing of other types.

Further, the height from the removal of the work from the carbon case to the FL is 4800 mm, and the size is 3000 mm × 2800 mm in width × depth including the gantry. In the future, space may become an issue when expanding facilities.

On the other hand, there is a demand for a coarse pulverizer which satisfies the following conditions (a) to (e) for increasing the production amount. However, there is nothing in the market that meets that condition.

(A) Hard lump can be roughly pulverized to a size (up to 10 × 10 × 10 mm) that can be processed by a fine pulverizer.

(B) A structure in which cleaning can be performed in a short time and easily in order to handle various kinds of powders.

(C) An apparatus which can reduce the work load and improve the work efficiency.

(D) A compact device requiring as little space as possible.

(E) An apparatus that will lead to automation including the next process in the future.

Therefore, a technical object of the present invention is to provide a coarse pulverizing apparatus satisfying all the above conditions.

[0017]

According to the present invention, a crushing unit for dropping and crushing an object to be crushed and / or crushing by a press machine, and a crushing unit for crushing the crushed object by a screw are provided. Wherein the crushing unit and the crushing unit are operable simultaneously and are integrally configured in a coarse crushing apparatus, wherein the crushing unit includes a moving pressing plate that is horizontally moved by the press machine; A fixed pressure plate at a position facing the moving pressure plate, and a crushing blade disposed at a lower end of the fixed pressure plate, wherein the crushing unit is located below the press crushing unit as the screw; A driving screw interlocked with the press machine; and a driven screw arranged in parallel with the driving screw, receiving the rotation of the driving screw by a gear and rotating in synchronization with the driving screw. Coarse crushing device is obtained to.

Further, according to the present invention, in the coarse crushing device, the crushing unit and the crushing unit are arranged in a rectangular tube-like structure.

Further, according to the present invention, in any of the above coarse pulverizers, the driving screw and the driven screw of the pulverizing unit each have a screw thread projecting to the outer periphery and formed in a spiral shape. Each screw thread has a shape in which the twist directions are opposite to each other so as not to interfere during rotation, and the driving screw and the driven screw are configured to rotate synchronously so as to maintain a constant interval between the pair of screws. And a coarse crushing device characterized in that the crushing is performed.

Further, according to the present invention, in the coarse crushing device, there is provided a coarse crushing device, wherein each of the pair of screws is provided with a crushing blade on the screw ridge.

Further, according to the present invention, there is provided a coarse crushing device, wherein the crushing blade is made of a carbide tip.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing the overall configuration of a coarse crushing apparatus according to an embodiment of the present invention. As shown in FIG. 1, the coarse crusher includes a crushing unit 20 and a crushing unit 30 formed in a body 21 having a rectangular tube shape. Crushing unit 20
Is a material input port 1 provided at the upper end of the body 21 and an input detection sensor 2 provided near the material input port 1.
A hydraulic press 3 provided at one side of the body, a moving press plate 4 provided at a press-side end of the hydraulic press 3, and a moving press plate 4 provided in the body 21 facing the moving press plate 4. A fixed pressure plate 5 provided, and a moving collision plate 4 and a work collision plate 6 provided below the fixed pressure plate 5 are provided. In addition, the crushing unit 30
Is a driving crushing screw 7 provided in parallel in the horizontal direction.
And a driven pulverizing screw 8.
And a discharge port 9 provided at the lower end of the main body.

FIG. 2A shows a crushing unit 2 of the coarse crushing apparatus shown in FIG.
It is the perspective view which looked at the pulverization part 30 from the 0 side. Also, FIG.
(B) is an enlarged perspective view showing the work collision plate 6 of (a). As shown in FIG. 2A, a plurality of work collision plates 6 are arranged at the lower end of the fixed pressing plate of the crushing unit 20 and above the driving crushing screw 7 in a longitudinal direction of the driving crushing screw 7. Have been. This work collision plate 6 is shown in FIG.
As shown in (b), a crushing blade 6a is formed on the upper part so that the work is caused to collide and be crushed.

FIG. 3 is a plan view showing a schematic configuration of the crushing section 30 of the coarse crushing apparatus of FIG. As shown in FIG. 3, the crushing unit 30 includes a driving crushing screw 7, a driven crushing screw 8, a motor 11 for rotating the driving crushing screw 7 via a driving transmission unit 17, a driving crushing screw 7 and a driven crushing screw. Gears 10 and 10 are provided at one ends of the shaft members 13 and 16 of the respective screws 7 and 8 so as to mesh with each other in order to rotate the gears 8 in opposite directions.

The drive crushing screw 7 is disposed in the body 21 and provided with a screw ridge 12 formed in a spiral shape along the outer periphery so that the tip of a carbide tip 19 forming a crushing blade projects on the outer periphery. And the shaft members 13 and 14 penetrating the body 21 in the axial direction from both ends thereof and protruding therefrom. The tip of the shaft member 14 is connected to the rotation shaft of the motor via the drive transmission unit 17. Drive transmission unit 17
Are formed from gears that mesh with each other. Also,
A gear 10 is provided at the tip of the shaft member 13. Here, the shaft members 13 and 14 may be integral with the cylindrical portion of the driving and crushing screw 7, or may be formed as a single core that penetrates the cylindrical portion of the screw so as to rotate with the cylindrical portion of the screw. Shafts or ones that are connected to each other and integrated.

On the other hand, the driven crushing screw 8 is
A screw tip 15 spirally formed along the outer periphery so that the tip of the cemented carbide tip 1 forming a crushing blade protrudes from the outer periphery, and a body extending in the axial direction from both ends thereof. Shaft members 16 and 17 projecting through the portion 21 are provided respectively. The tip of the shaft member 17 is supported by a bearing (not shown), and a similar gear 10 that meshes with the gear 10 of the shaft member 13 of the driving and crushing screw 7 is provided at the tip of the shaft member 16. Here, the shaft members 16, 1
Reference numeral 7 may be integral with the cylindrical portion of the driven grinding screw 8, or may be connected to a single shaft or a shaft penetrated to form a core inside the screw 8 so as to be able to rotate together with the cylindrical portion of the driven grinding screw 8. It may be one integrated.

The screw ridges 12 and 15 of the respective screws 7 and 8 are formed symmetrically with each other so as to mesh with each other as they rotate in opposite directions.
The work moves along the axial direction as indicated by the arrow 18.

Next, the operation of the coarse grinding method of the coarse grinding apparatus according to the embodiment of the present invention will be described with reference to FIGS. In the coarse grinding device according to the embodiment of the present invention,
400 x 200 x 300 mm size work (10 x 10 x 10 mm max.)
Can be crushed up.

First, in the first step, the work 22 introduced from the raw material introduction port 1 collides with the work collision plate 6 and is roughly crushed by the impact of the fall.

Next, in the second step, after the presence / absence of workpiece loading is confirmed by the loading detection sensor 2 attached to the side of the raw material loading port 1, the hydraulic press 3 is moved. Hydraulic press 3
As a result, the movable pressing plate 4 moves forward, and a hard lump that cannot be crushed by the work collision plate 6 is sandwiched between the fixed pressing plate 5 and crushed.

Next, in the third step, the work 22 crushed in each of the above steps is not more than 10 × 10 × 10 mm and the discharge port is provided between the crushing screws 7 and 8 having the carbide tips 19 mounted on the circumference. 9 and the coarse pulverization is completed.

Incidentally, the one having a size of 10 × 10 × 10 mm or more cannot be passed between the screws, so that the fourth step is performed. The crushing screws 7 and 8 provided with the screw ridges 12 and 15 provided with the carbide tips 19 start rotating simultaneously with the movement of the hydraulic press 3, and are driven by the motor 11 via the drive transmission unit 17.
The driven crushing screw 7 is moved, and the driven crushing screw 8 is rotated by the gear 10 so that the mutual crushing of the screws does not occur and the gap is adjusted. The driving and crushing screw 7 and the driven crushing screw 8 are symmetrically twisted so as not to interfere with each other, and are tuned by gears to rotate in reverse while keeping the gap constant.

In the fourth step, as shown in FIG. 3, the work on the screw is moved in the axial direction (right and left) as shown by arrow 18 by rotating the grinding screw forward and backward. ， Crushing while loosening. When it reaches a certain size, it digs into the cemented carbide tip 19 attached to form the screw ridges 12 and 15 on the circumference of the two screws, and is further crushed and passed between the screws. Become.

As described above, in the prior art, the work using a manual rock drill and crushing to a size that can be processed by a jaw crusher is performed in the embodiment of the present invention. This can be replaced by a mechanical process called crushing by the moving press plate 4 and the fixed press plate 5 by the hydraulic press 3, and the manual operation can be omitted. Therefore, in the embodiment of the present invention, it is possible to reduce the labor burden of the worker and to realize an unmanned operation in which the worker is not mixed.

Further, the unification of the mechanical means for crushing and crushing described above can be realized by the crushing unit 20, and as described with reference to FIG. , Input feeder 5
4. The height of about 3500 mm up to the jaw crusher body can be made about 1000 mm. As a result, there are few places in contact with the work, and the cleaning range can be greatly reduced.

Also, in the coarse pulverizer, the opening is 4
The cleaning efficiency was greatly improved because the structure was as simple as 20 x 300 mm and had no dead zone. Also,
The possibility of mixing with other varieties is reduced, leading to improved quality.

As described above, the conventional 3000 ×
According to an embodiment of the present invention, a 2800 × 4800 (mm) device is 1250 × 1000 × 2000 (mm).
And a compact device, which led to a reduction in installation space.

Further, in the embodiment of the present invention, by changing the rotation speed of the crushing screws 7 and 8, it becomes possible to supply a constant amount, and it is possible to automate the next step with the crushing apparatus and the line.

In the embodiment of the present invention, since the size of the workpiece after the coarse pulverization is constant, the distance between the screw axes is fixed. However, the distance between the axes may be changed according to the desired size of the work. Is also possible.

Specifically, when the coarse crushing apparatus according to the embodiment of the present invention was used, the apparatus became compact and the installation space was reduced to about 1/6. Further, the pulverization time per batch was reduced from 1 hour to about 15 to 20 minutes, which was greatly reduced. In addition, there was no need to have a worker during that time, and it was possible to be unmanned. Further, the cleaning time when changing the type is reduced from 2 hours to about 15 minutes, leading to an improvement in work efficiency. In addition, the cleaning area has been significantly reduced, which has led to a reduction in work effort.

[0042]

As described above, according to the present invention,
By integrating the respective mechanisms of crushing by dropping, crushing by press, and coarse crushing by screw, the coarse crushing method can be provided as a compact apparatus, and a coarse crushing apparatus that can greatly reduce the installation space can be provided.

Further, according to the present invention, the apparatus main body has a square tubular structure, and the elimination of the dead zone enables complete discharge, which leads to an improvement in yield and a greatly reduced cleaning range. Therefore, it is possible to provide a coarse crushing apparatus which can be easily cleaned, reduces the work load on the operator, improves the working efficiency, eliminates the mixing of other varieties, and improves the quality.

Further, according to the present invention, the method of coarse pulverization can be improved by mechanization of the coarse pulverization step, and the pulverization time is shortened, leading to an improvement in working efficiency. In addition, since it is not necessary for the worker to be involved in the work, and it is possible to supply a fixed amount, it is possible to unify the line with the pulverization device, which is the next process in the future, and connect it to the automatic unmanned operation. It is possible to provide a coarse crushing apparatus that can be easily industrialized.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a schematic configuration of a coarse crusher according to an embodiment of the present invention.

FIG. 2A is a perspective view of a crushing unit 30 viewed from a crushing unit 20 of the coarse crushing device of FIG. (B) is an enlarged perspective view showing the work collision plate 6 of (a).

FIG. 3 is a sectional view showing a main part of the coarse crushing apparatus of FIG.

FIG. 4 is a view showing a conventional coarse pulverizing apparatus.

FIG. 5 is a view showing a main part of the coarse crusher of FIG. 4;

FIG. 6 is a schematic view for explaining the operation of the main part of the coarse crushing apparatus of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Raw material input port 2 Input detection sensor 3 Hydraulic press 4 Moving press plate 5 Fixed press plate 6 Work collision plate 6a Crushing blade 7 Drive crush screw 8 Follower crush screw 9 Discharge port 10 Gear 11 Motor 12,15 Screw ridge 13,14, 16, 17 Shaft member 19 Carbide chip 51 Raw material container for manual pulverization 52 Input chute 53 Rock drill base 54 Input feeder 55 Jaw crusher input port 56 Jaw crusher 57 Fixed teeth 59 Swing jaw 60 Toggle plate 61 Tension rod 62 Jaw crusher Receptor

Claims (5)

[Claims] 1. A crushing unit for dropping and crushing an object to be crushed and / or crushing by a press machine, and a crushing unit for crushing the crushed object by a screw, wherein the crushing unit and the crushing unit Is a coarse crushing apparatus which can be operated at the same time and is integrated, wherein the crushing unit comprises a moving pressing plate which is horizontally moved by the press machine, and a fixed pressing member which is located at a position opposed to the moving pressing plate. A pressure plate, and a crushing blade disposed at a lower end portion of the fixed pressure plate, wherein the crushing portion is located below the press crushing portion as the screw, and a driving screw interlocked with the press machine; A coarse screw crusher comprising: a driven screw that is arranged in parallel with the drive screw and that receives the rotation of the drive screw with a gear and rotates in synchronization with the driven screw. 2. The coarse crushing device according to claim 1, wherein the crushing unit and the crushing unit are disposed in a rectangular tubular structure. 3. The coarse crushing device according to claim 1, wherein the driving screw and the driven screw of the crushing unit each have a screw thread projecting to the outer periphery and formed in a helical shape, and the respective screw is provided. The ridge has a shape in which the twist directions are opposite to each other so as not to interfere during rotation, and the driving screw and the driven screw are configured to rotate synchronously so as to maintain a constant interval between the pair of screws. A coarse crushing device characterized by the above-mentioned. 4. The coarse crushing device according to claim 3, wherein each of said pair of screws has a crushing blade on said screw ridge. 5. The coarse crushing device according to claim 4, wherein said crushing blade is made of a carbide tip.