JP5820524B1 - Shot molding equipment - Google Patents

Abstract

Provided is a shot molding apparatus capable of preventing a shot loss in a shot molding process and a classification process and collecting dust with a cyclone type having a strong dust suppressing force. A shot molding apparatus includes a supply path 510 provided on the other side of a storage tank 200 to which a processed cut piece is transferred, and a cylindrical body in which an upper portion communicates with the supply path and the cut piece falls. A plurality of insertion spaces provided at regular intervals along the depth direction of the body, a classification unit that is detachably inserted into each of the insertion spaces, and can classify the cut pieces by diameter, and the insertion space And a vibrator comprising a discharge port through which the classified cut pieces are discharged, and a vibration providing unit that is installed on one side of the body and imparts vibration to the classification unit. And [Selection] Figure 1

Description

  The present invention relates to a shot molding apparatus, and more particularly to a shot molding apparatus that molds a shot used for shot peening.

  Recently, in order to increase the surface processing and durability of mechanical parts, various processing methods such as mechanical special processing, electrical special processing, and chemical special processing have been studied from various fields.

  Mechanical special processing is a processing method that causes work hardening on the surface of the workpiece to improve fatigue strength and surface hardness. Examples include sand blasting and shot peening. It is possible to improve the design ability by improving the strength of the material and maintain high toughness at the center of the material, so it is extremely useful for improving machine structural parts subjected to fatigue load, especially fatigue strength and life It is very important to improve.

  Compared to heat treatment and other processing methods, shot peening is a processing method that can be operated without a large energy source and has no pollution source due to fuel consumption, and is designed to reduce weight by increasing strength after shot peening. Energy saving and air pollution prevention effect.

  Shot peening is applied to all industrial fields such as machinery, aviation, automobiles, shipbuilding, civil engineering, and architecture, and it is very much especially due to technological development, product enlargement, higher strength, lighter weight, and improved safety. Wide range of applications.

  Shot peening includes coil springs, leaf springs, gears, crankshafts, connecting rods, axle shafts, universal joints, pistons, cylinder blocks, crankcases, torsion bars, chain links, milling cutters, for increased fatigue life and fatigue strength. Great effect on structures subject to fatigue, such as drills, high-pressure steel pipes, high-pressure vessels, jet engine blades, helicopter blades, etc. Notches, keyways, welds, corrosion fatigue, high stress working parts, parts of parts The effect is outstanding in the surface part after machining, the surface part after grinding, the heat treatment decarburization part, the friction part, the twist part, the surface part after electric discharge machining, and the like.

  As a material for such a shot ball, it is frequently used for mild steel, hard steel, tool steel, structural steel, spring steel, duralumin, aluminum alloy, stainless steel, zinc, gold sand.

  There are two methods for producing shot balls: cast steel shot ball production method and shot ball production process using grit (cut wire). Used to roughen and improve the bondability of plating and paint.

  Both shots and grit are a kind of blasting material mainly used in industries that use metal materials such as automobiles, construction, shipbuilding, forging, steel, etc. as raw materials, and must satisfy various shapes and performances Therefore, the present inventor proposed the “shot molding apparatus” of Patent Document 1 and manufactured a shot.

  However, the “shot molding device” is that materials are accumulated between projection surfaces during rounding projection, and in the process of classifying molded shots, classification malfunction and shot loss due to shot diameter occur. There was a problem.

  At the same time, since dust cannot be collected completely due to overloading of the molding apparatus, it is required to develop a shot molding apparatus having a dust collecting means that has a strong suppression of dust generation.

Korean Registered Patent No. 10-0524536

  Therefore, the present invention has been devised to solve such problems, and its purpose is to prevent the loss of shots in the shot molding and classification processes, and to have a strong suppression of dust generation. An object of the present invention is to provide a shot molding apparatus that can collect dust with the above.

  In order to achieve the above object, the shot forming apparatus of the present invention accommodates a cut piece formed by finely cutting a steel wire, and freely drops the cut piece via a transfer path provided on one side. A storage tank; installed at the lower part of the storage tank and communicated with the transfer path, supplying a high-speed air current to the projection surface installed on one side of the interior, and a cutting piece that freely falls from the transfer path, and cutting A molding chamber including an impeller capable of round processing by projecting a piece onto a projection surface; one side is installed at the lower part of the molding chamber and the other side communicates with the upper part of the storage tank, and collides with the projection surface and descends In a shot molding apparatus, comprising: a conveyor that conveys the cut pieces to a storage tank; and a dust collector that communicates with the molding chamber and sucks and collects collision debris formed in the molding chamber and dust. The show The forming apparatus includes a supply path that is provided on the other side of the storage tank to transfer a processed cut piece, an upper portion that communicates with the supply path, and a cylindrical body that the cut piece falls, A plurality of insertion spaces provided at regular intervals along the depth direction, a classification unit that is detachably inserted in each of the insertion spaces and that can classify the cut pieces by diameter, and is provided between the insertion spaces. The vibrator includes a discharge port through which the classified cut pieces are discharged and a vibration providing unit that is installed on one side of the body and applies vibrations to the classification unit.

  Here, the projection surface is formed of a chromium steel material, and includes a plurality of unit bodies that are spaced apart along the depth direction of the inner side surface of the molding chamber. An anti-stacking plate is installed.

  The dust collector includes a cylindrical cyclone portion whose lower portion is formed in an inverted conical shape, an inflow pipe that communicates the upper side of the outer peripheral surface of the cyclone portion with the molding chamber, the bottom surface of the cyclone portion, and the inside of the cyclone portion. A storage cylinder that stores collision fragments that rotate and descend along a peripheral surface, and a discharge pipe that communicates with the upper surface of the cyclone unit and discharges dust rising from the inside of the cyclone unit. .

  Each of the classification units includes a first frame case that is detachably inserted into each of the insertion spaces, and a first filtration net that is installed inside the first frame case.

  The vibration providing unit includes a vibration motor installed at a lower portion of the body and providing vertical vibrations to the body, and a plurality of springs installed on a bottom surface of the body.

  Each of the classification parts penetrates both sides of the second frame case, a second frame case that is detachably inserted into each of the insertion spaces, a second filter net installed inside the second frame case, and the second frame case. A rotating shaft coupled to the second filtration net, and a fin stopper provided on each of the upper and lower portions of the second frame case so as to be inclined toward the center of the second frame case. .

  The vibration providing unit includes a drive motor that is connected to each rotation shaft on one side and rotates the second filter mesh forward and backward to provide rotational vibration, and a stationary table that supports each of the drive motors. It is characterized by becoming.

  According to the present invention described above, the following effects can be expected.

  1) Since it is possible to prevent shot accumulation inside the apparatus during the molding process, there is an advantage that maintenance is simple and cost can be reduced.

2) There is an advantage that production efficiency can be increased by preventing the loss of shots in the classification process and improving the classification performance.
3) There is an advantage that efficiency can be improved by improving the working environment by collecting dust with a cyclone type having a strong suppression of dust generation.

It is a figure which shows the shot shaping | molding apparatus which concerns on this invention. It is a figure which shows the projection surface shown in FIG. It is a figure which shows 1st Example of the vibrator which concerns on this invention. It is a figure which shows the classification | category part shown in FIG. It is a figure which shows 2nd Example of the vibrator which concerns on this invention. It is a figure which shows the classification | category part shown in FIG.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  In the present invention, a cut piece formed by finely cutting a steel wire is round-processed into a high-precision spherical shape and used as a blasting material in a peening or blasting process (shot) As shown in FIG. 1 showing a shot forming apparatus of the present invention and FIG. 3 showing a first embodiment of a vibrator according to the present invention, a storage tank 200, a molding chamber 100 are formed. , A conveyor 300, a dust collector 400, and a vibrator 500 that is classified by the diameter of the cut piece after the forming of the cut piece is completed.

  The storage tank 200 has a hopper shape, accommodates a cut piece formed by finely cutting a steel wire, and drops the cut piece into the molding chamber 100 via a transfer path 210 provided on one lower side. Let

  The molding chamber 100 is installed in the lower part of the storage tank 200 and communicates with the transfer path 210 on the upper side. The projection surface 110 and the impeller 120 are installed inside, and the cutting piece falls through the transfer path 210. The round process.

  That is, the storage tank 200 is a space portion that is installed so that cut pieces are accumulated on the upper side of the molding chamber 100 in which the impeller 120 is installed. A transfer path 210 is provided for guiding the cut piece to fall freely. Such a cut piece is transferred to the impeller 120 inside the molding chamber 100 through the hopper of the impeller 120 connected to the transfer path 210 of the storage tank 200, and continuously by the rotation of the impeller 120. Are projected onto the projection surface 110 and rounded.

  Specifically, the molding chamber 100 is a box-shaped space in which cutting pieces are continuously projected, and a projection surface 110 made of chrome steel is installed on the entire one side surface, and the opposite side has the projection surface 110. An impeller 120 that strongly induces an air flow to the projection surface 100 is installed.

  As shown in FIG. 2 showing the projection surface shown in FIG. 1, the projection surface 110 is formed of a chrome steel material and is spaced apart along the depth direction of the inner side surface of the molding chamber 100. A plurality of unit bodies 111, and a stacking prevention plate 112 is installed in the space between each of the unit bodies 111, thereby causing a phenomenon in which cut pieces are stacked between the conventional unit bodies 111. Can be prevented.

  The impeller 120 generates lift by rotating a large and wide blade like a propeller. The impeller 120 has a diameter of 360 mm to 550 mm, and the length of the blade is further relative to the diameter of the impeller. It is preferable to increase the projection efficiency of the cut piece by increasing the length.

  A separation space suitable for supplying velocity energy is provided between the projection surface 110 and the impeller 120, and a cut piece transferred to the impeller 120 causes the impeller 120 to rotate by the rotation of the impeller 120. Then, the light is continuously projected onto the projection surface 110. The cut piece that has collided with the projection surface 110 receives an impact of only the kinetic energy generated by its own weight and the projection speed, and the colliding portion with the projection surface 110 is broken and crushed or peeled off. In the collision between the cutting piece and the projection surface 110, when the collision portion is a corner portion of the cut wire, the impact time is shorter and the impact area is narrower than when the other portion collides. By receiving a large impact force, the material is further deformed and this process is repeated to form a spherical shape as a whole.

  Next, the conveyor 300 has a cut piece (hereinafter referred to as a “projection piece”), one side of which is installed in the lower part of the molding chamber 100 and the other side communicates with the upper part of the storage tank 200 and collides with the projection surface 110. Are continuously transported to the storage tank 200.

  As described above, the projecting pieces conveyed by the conveyor 300 are formed into a nearly spherical shape gradually as the number of repetitions is increased by continuously and repeatedly performing the process of projecting on the projection surface 110, and fatigue strength is increased. As the height of the projection increases, the size of the depressed portion due to the impact decreases, and the entire surface of the projection piece receives a uniform impact force, and the accuracy increases.

  Next, the dust collector 400 communicates with the molding chamber 100 and sucks and collects collision debris and dust formed in the molding chamber 100. In the process in which the cut pieces that collide with the projection surface 110 are damaged and formed by impact force, the fine pieces are peeled off and dust is continuously generated. When the dust is extracted to the outside of the molding apparatus and exposed to the atmosphere, air pollution is induced, and even inside the molding apparatus, it accumulates in the gaps of the apparatus and causes abnormal operation of the machine. To reduce the accuracy of the molding operation. Therefore, at the same time as the projection process as described above is performed, the dust collector 400 for sucking out the dust floating in the molding chamber 100 more effectively exerts the dust generation deterring power even when the molding chamber 100 is overloaded. In order to do this, a dust collector is installed by the cyclone method.

  The dust collector 400 includes a cyclone unit 410, an inflow pipe 420, a storage cylinder 430, and a discharge pipe 440. The cyclone portion 410 has a cylindrical structure with a lower portion formed in an inverted conical shape. The dust flowing into the upper side of the inside forms a cyclone airflow, and dust with a certain mass or more falls like a collision fragment. And dust below a certain mass is discharged upward.

  The inflow pipe 420 allows the upper side of the outer peripheral surface of the cyclone portion 410 to communicate with the molding chamber 100 so that dust and collision fragments in the molding chamber 100 can be sucked into the cyclone portion 410.

  The storage cylinder 430 communicates with the bottom surface of the cyclone unit 410 and stores collision fragments rotating and descending along the inner peripheral surface of the cyclone unit 410, and the discharge pipe 440 communicates with the top surface of the cyclone unit 410. Dust rising inside the portion 410 is discharged.

  Next, the vibrator 500 is used to classify rounded projection pieces (hereinafter referred to as “shots”) by diameter according to a collision. The vibrator 500 is provided with a supply path 510, a body 520, an insertion space 530, a classification unit 540, a discharge unit. An outlet 550 and a vibration providing unit 560 are included.

  The supply path 510 is provided on the other side of the storage tank 200 and transfers the shot transferred to the storage tank 200 to the body 520.

  The body 520 has a cylindrical shape, and an upper portion thereof communicates with the supply path 510 to provide a shot dropping space.

  The insertion space 530 is provided in multiple stages so as to have a constant interval along the depth direction of the body 520. The classification unit 540 is detachably inserted in each of the insertion spaces 530, and allows the cut pieces that fall to be classified by diameter.

  The discharge port 550 is installed between the insertion spaces 530 of the body 520 and discharges the classified cut pieces to the outside of the body 520. The discharge port 550 is preferably provided in the depth direction of the body 520 along the outer periphery of the body 520 in order to prevent mutual interference.

  The vibration providing unit 560 is installed on one side of the body 520 and applies vibrations to the classification unit 540 so that the classification unit 540 can classify the shots by diameter.

  In summary, the vibrator 500 described above enables the classification unit 540 inserted into each insertion space 530 to classify shots with smaller diameters as they go in the depth direction of the body 520, thereby It can prevent loss and increase production efficiency.

  Next, the first embodiment of the vibrator 500 according to the present invention having the basic structure described above will be described in detail.

  As shown in FIG. 4 showing the classification unit 540 of FIG. 3, each of the classification units 540 includes a first frame case 541 that is detachably inserted into each insertion space 530, and an interior of the first frame case 541. And a first filtration net 542 installed.

  In addition, as shown in FIG. 3, the vibration providing unit 560 is installed at a lower portion of the body 520, and a vibration motor (not shown) that provides vertical vibration to the body 520, and a bottom surface of the body 520. And a plurality of springs 561 to be installed. Accordingly, the vibration motor can provide vertical vibration to the body 520, and the amplitude can be greatly improved by the plurality of springs 561, thereby efficiently providing vertical vibration to the classification unit 540.

  Hereinafter, referring to the above-described drawings, FIG. 5 showing a second embodiment of the vibrator 500 according to the present invention, and FIG. 6 showing the classification unit 540 of FIG. 5, the second embodiment of the vibrator 500 according to the present invention will be described. Examples will be described in detail.

  Each of the classification units 540 includes a second frame case 541a, a second filter mesh 542a, a rotating shaft 543a, and a fin stopper 544a.

  First, the second frame case 541a is detachably inserted into each of the insertion spaces 530, and the second filter net 542a is installed inside the second frame case 541a.

  The rotating shaft 543a passes through both sides of the second frame case 541a and is connected to the second filter net 542a, and allows the second filter net 542a to rotate inside the second frame case 541a.

  The fin stopper 544a is made of an elastic material and is provided on each of the upper and lower portions of the second frame case 541a. The fin stopper 544a is provided so as to be inclined toward the center of the second frame case 541a. When the mesh 542a rotates around the rotation shaft 543a, the rotation angle is limited, and shot outflow between the second frame case 541a and the second filtration mesh 542a can be prevented.

  The vibration providing unit 560 includes a drive motor 561 and a stationary table 562, and provides rotational vibration to the classification unit 540.

  The driving motor is connected to each of the rotation shafts 543a on one side to rotate the second filter screen 542a in a forward / reverse direction, thereby providing fine rotation vibration to the classification unit 540. The stationary table 562a stably supports the driving motor 561a, thereby preventing the stationary table 562a from moving due to vibration when the driving motor 561a is driven.

  As described above, the basic technical idea of the present invention is that the shot can be collected in a cyclone type that prevents the loss of shots in the shot forming and sorting processes and has a strong dust generation suppression force. It can be seen that a molding apparatus is provided.

  It is natural that various modifications can be made by those having ordinary knowledge in the art within the scope of the technical idea of the present invention. Accordingly, the scope of the invention should be construed within the scope of the claims made so as to include various modifications.

DESCRIPTION OF SYMBOLS 100 Molding chamber 110 Projection surface 120 Impeller 200 Storage tank 210 Transfer path 300 Conveyor 400 Dust collector 410 Cyclone part 420 Inflow pipe 430 Storage cylinder 440 Discharge pipe 500 Vibrator 510 Supply path 520 Body 530 Insertion space 540 Classification part 550 Exhaust part 560

Claims (6)

A storage tank that accommodates a cut piece formed by finely cutting a steel wire and allows the cut piece to freely fall through a transfer path provided on one side;
It is installed in the lower part of the storage tank and communicates with the transfer path, and supplies the high-speed airflow to the projection surface installed on one side of the inside and the cutting piece that freely falls from the transfer path, and the cutting piece is projected onto the surface. A molding chamber including an impeller that can be projected onto a round and processed;
A conveyor having one side installed in the lower part of the molding chamber and the other side communicating with the upper part of the storage tank and transporting the cut pieces that collide with the projection surface and descend to the storage tank;
In a shot molding apparatus, comprising: a dust collector that communicates with the molding chamber and sucks and collects collision debris and dust formed inside the molding chamber;
The shot molding device
A supply path that is formed on the other side of the storage tank and in which rounded cut pieces are transferred, an upper part communicates with the supply path, and a cylindrical body in which the cut pieces fall, and in a depth direction of the body A plurality of insertion spaces provided at regular intervals along the insertion space, a classification unit that is detachably inserted into each of the insertion spaces, and that can classify the cut pieces by diameter, and is provided between the insertion spaces and classified. an outlet cut pieces is discharged, is provided on one side of the body, Ri Na comprise vibrator composed of a vibration providing part for vibrating the classifying unit,
The projection surface is formed of a chromium steel material, and includes a plurality of unit bodies that are spaced apart along the depth direction of the inner side surface of the molding chamber, and an accumulation preventing plate is provided in the space between the unit bodies. A shot molding apparatus characterized in that is installed. The dust collector is
Cylindrical cyclone part whose lower part is formed in an inverted cone shape,
An inflow pipe for communicating the upper side of the outer peripheral surface of the cyclone part and the molding chamber;
A storage cylinder that communicates with the bottom surface of the cyclone unit and stores collision debris that rotates and descends along the inner peripheral surface of the cyclone unit, and communicates with the top surface of the cyclone unit, and dust rising from the inside of the cyclone unit is discharged. The shot forming apparatus according to claim 1, further comprising a discharge pipe. Each of the classification parts is
A first frame case detachably inserted into each of the insertion spaces;
The shot forming apparatus according to claim 1, further comprising a first filtration net installed inside the first frame case. The vibration providing unit includes:
A vibration motor installed at a lower portion of the fuselage to provide vertical vibration to the fuselage;
The shot forming apparatus according to claim 3 , comprising a plurality of springs installed on a bottom surface of the body. Each of the classification parts is
A second frame case detachably inserted in each of the insertion spaces;
A second filtration net installed inside the second frame case;
A rotating shaft that passes through both sides of the second frame case and is connected to a second filtration net;
The shot forming apparatus according to claim 1, further comprising: a fin stopper provided on each of the upper and lower portions of the second frame case so as to be inclined toward the center of the second frame case. The vibration providing unit includes:
A driving motor connected to each of the rotation shafts on one side to provide rotational vibration by rotating the second filter mesh forward and backward;
The shot forming apparatus according to claim 5 , further comprising a stationary table that supports each of the drive motors.

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