JP2011079095A - Trough oscillation type shot-blasting apparatus, and trough oscillation type shot-blasting method - Google Patents

Abstract

A shot blasting device and a trough oscillating shot blast that uniformly treats the surface of a product to be treated and that can be completely discharged after the treatment so that a projection material projected at a high speed does not leak to the outside where an operator is present. A processing method is provided.
SOLUTION: A trough 3 having a U-shaped ship bottom in a cabinet 1 and a hole 31 through which a projection material passes and a workpiece W does not pass can be swung through bearings at both ends. To support. The product to be processed W stored in the product distribution box Q is put into the trough 3 by the bucket loader 9. The trough 3 projects the projection material from the centrifugal projection device 4 disposed on the upper side while accommodating and swinging the product W to be processed. The projectile is collected at the lower part, lifted up by the bucket elevator 7 and circulated for use.
[Selection] Figure 1

Description

  The object of the present invention is to remove the oxidized scale adhering to a metal product such as a forged product or the sand that adheres to the metal product such as a cast product with a blasting material accelerated while stirring the metal product on a swinging trough. The present invention relates to a trough oscillating shot blasting apparatus and a trough oscillating shot blasting method using this apparatus.

  Conventionally, an apparatus related to shot blasting used to remove oxide scale adhering to a metal product such as a forged product or sand adhering to a metal product such as a cast product is a product to be processed by swinging an inclined drum. It was sent to the downstream and projected while rolling.

JP-A-6-143144

  However, in these conventional apparatuses, when the product to be processed falls into the drum from a belt conveyor or the like during loading, the product to be processed collides with the drum and the product to be processed already, and a dent is generated in the product to be processed. For cast products with low toughness, the products to be processed may be cracked or chipped. In addition, the product to be processed rolls due to the swing of the drum, and gradually slides to the downstream side due to the tilt of the drum, so that the products to be processed are caught in the drum and the product to be processed stays without being discharged downstream. In addition to the fact that the worker must enter and discharge the accumulated product to be processed and continuously carry it in and out on the line, the drum loading side and the unloading side have multiple layers of rubber plates, etc. Also, the projection material projected at high speed was prevented from leaking outside, but the rubber plate was rolled up by the product to be processed at the time of carry-in, and the high-speed projection material leaked to the operator side from the gap There was a problem.

  The present invention relates to a batch type trough rocking shot blasting apparatus used for removing oxide scale attached to a metal product such as a forged product or sand removing a metal product such as a cast product. A shot blasting device and a trough oscillating shot blasting method that uniformly treats the surface of a product to be treated and that can be completely discharged after the treatment, so that the projection material projected at high speed does not leak to the outside where the operator is located The purpose is to provide.

The trough oscillating shot blasting apparatus of the present invention made to solve the above problems is as follows.
A trough-oscillating shot blasting device used to remove oxidized scales attached to metal products such as forgings, etc., which can accommodate the product to be processed W so that the splash of the projection material does not leak outside. An enclosed cabinet 1,
A door 2 that is located in front of the apparatus and is provided for loading the product W to be processed into the cabinet 1 and capable of opening and closing the cabinet 1 by raising and lowering;
A hole 31 disposed inside the cabinet 1 and supported by the cabinet 1 through bearings at both ends so as to be swingable. The hole 31 has a U-shaped ship bottom shape through which the projection material passes and the product to be processed W does not pass. An open trough 3 and one or more centrifugal projection devices 4 arranged on the top of the cabinet 1 and capable of accelerating the projection material,
Vibrating conveyor 5 that can transport the projection material and the product W to be processed arranged at the bottom of the cabinet 1 and separate the product and the projection material;
A lower screw conveyor 6 connected to the vibration conveyor 5 and transporting the projection material separated and recovered from the vibration conveyor 5;
A bucket elevator 7 connected to the lower screw conveyor 6 and capable of lifting the projection material transported by the lower screw conveyor 6 upward;
A separator 8 connected to the upper part of the bucket elevator 7 and having a dust collecting duct flange;
A projection material hopper 13 disposed at the bottom of the separator 8 and capable of temporarily storing the projection material;
A projection material introduction pipe 41 of the same number as the centrifugal projection device 4 arranged to connect the projection material hopper 13 and the centrifugal projection device 4;
The number of cut gates 42 which are located on the projection material introduction pipe 41 and can adjust and open and close the flow rate of the projection material introduced into the centrifugal projection device 4,
It comprises a bucket loader 9 that can move up and down and tilt a box-like bucket 91 that can be loaded with a product distribution box Q that is placed on the front side of the cabinet 1 and stores the product W to be processed.

  The bucket loader 9 preferably includes a slide mechanism 10 that slides the bucket 91 after ascending and allows the bucket 91 to enter the cabinet 1. Further, the bucket loader 9 is attached to the bucket 91 and can be opened and closed after the cabinet 1 enters the cabinet 1 by the sliding mechanism 10 so that the product to be processed W stored in the bucket 91 can be put on the trough 3 in the cabinet 1 by opening and closing the plate. A lid 11 is preferably provided. Further, it is preferable that a tilting device 12 capable of horizontally moving and tilting the product distribution box Q for carrying out the product W subjected to the shot blasting process is disposed in the vicinity of the product discharge portion of the vibration conveyor 5.

The trough rocking type shot blasting method of the present invention made to solve the above problems is
A trough rocking type shot blasting method that uses the above trough rocking type shot blasting apparatus to remove oxidized scales attached to metal products such as forged products or sand attached to metal products such as cast products. There,
It consists of a processed product loading process, a blasting process, and a processed product unloading process.
The process for bringing in the product to be processed
A processed product storage process for carrying a product distribution box Q storing the processed product W into the bucket;
A door opening step for lifting and opening the door 2 for opening the cabinet 1 in order to put the product W to be processed into the trough 3 in the cabinet 1 by the bucket loader;
A bucket loader lifting and tilting step in which the bucket 91 containing the product distribution box Q is moved up and down and tilted to bring the bucket 91 closer to the opening of the cabinet 1 opened by the door 2 opening step;
A bucket loader slide entering step of sliding the bucket 91 into the cabinet 1 after completion of the bucket loader ascending inclination;
A lid opening step of opening the lid of the bucket 91 after completion of entering the cabinet 1 and putting the product W to be processed in the product distribution box Q into the trough 3 in the cabinet 1;
A bucket slide retraction process in which the bucket 91 is slid out of the cabinet 1 after all the products W to be processed in the product distribution box Q have been put into the trough 3 in the cabinet 1;
A lid closing step of closing the lid of the bucket 91 after the bucket slide retreat is completed;
It consists of a bucket loader lowering process that returns and lowers the bucket inclination,
The blasting process is
A door sealing step of lowering and sealing the door 2 to seal the opened cabinet 1;
A projecting step of rotating and starting the centrifugal projection device 4 after the cabinet 1 is sealed by lowering the door 2 and then injecting a projection material from the centrifugal projection device 4 by opening the cut gate 42;
A product agitating step of repeatedly swinging the trough 3 in a range of a certain angle in order to agitate the treated product W evenly during the projection;
The unprocessed product unloading process consists of
After the projection process is completed and the projection material is no longer ejected from the centrifugal projection device 4, the projection material collected on the trough 3 is discharged from the hole 31 of the trough 3 and the dust is collected in the cabinet 1 for the purpose of collecting the door. A projecting material discharging step of repeatedly swinging the trough 3 within a certain angle range with the cabinet 1 sealed from 2;
A trough reversal product transfer step for stepwise reversing the trough 3 to the carry-out angle in order to carry out the product W to be processed below the trough 3 to the vibrating conveyor 5 below the cabinet 1 after the projecting material discharge step is completed;
A vibrating conveyor transfer step of receiving the product W to be processed and transported downward from the trough 3 by the vibrating conveyor 5 to the tilting device 12;
The product receiving step Q includes a product transfer step of horizontally moving and tilting the product receiving box Q to transfer the product W to be processed transferred from the vibrating conveyor 5 to the product receiving box Q.

  It is preferable that the bucket loader ascending / descending / inclining step includes a step of accumulating operating times of the ascending / descending and tilting operations and issuing a process prohibition and an inspection warning when a predetermined safe operating time has elapsed.

  The present invention is a trough oscillating shot blast used for removing oxide scale adhering to a metal product such as a forged product or sand adhering to a metal product such as a cast product. After the bucket is brought close to the trough by sliding the bucket loader, the product to be processed can be introduced without making a dent on the product to be processed by opening the bucket lid, and the trough 3 is constantly oscillating during projection. Therefore, since the product W to be processed is well stirred, the surface of the product W to be processed can be processed evenly, and after the processing, it can be completely discharged from the trough 3, and the product W to be processed is transferred from the vibrating conveyor 5 to the product distribution box Q. When the product distribution box Q is moved up and down and tilted, the processed product can be transferred to the product distribution box Q without making a dent on the processed product. It is possible to provide a last processing method and apparatus.

  In addition, by completely sealing the projection chamber with the door 2 after the product to be processed is charged, scattering of the projection material to the outside of the cabinet 1 can be greatly reduced. In the projecting material discharge process, since the door 2 is sealed after the projecting process is completed, the dust generated in the cabinet during the projecting process can be collected during the process, and the cabinet 2 is clean. Therefore, when the door 2 is opened during the next operation, the amount of dust flowing out of the cabinet 2 can be greatly reduced.

It is a front view of a trough rocking type shot blasting device. It is a side view of a trough rocking type shot blasting device. It is a top view of a trough rocking type shot blasting device. It is explanatory drawing showing the tilting device near a product discharge part. It is explanatory drawing showing a mode that the tilting device of the product discharge part vicinity tilted in order to receive a to-be-processed product. It is a flow sheet showing the process of the trough rocking type shot blast processing method.

Preferred embodiments of the present invention are shown below.
1 to 3 show a trough rocking type shot blasting apparatus. Reference numeral 1 denotes a cabinet which can accommodate the product to be processed W and is surrounded on the entire surface so that scattering of the projection material does not leak to the outside. Is provided with a door 2 that is provided to put the product to be processed W into the cabinet 1 and that can open and close the cabinet 1 by being raised and lowered. Inside the cabinet 1 is provided a trough 3 that is swingably supported by the cabinet 1 by bearings at both ends. The trough 3 has a U-shaped ship bottom shape, and has a hole 31 through which a projection material passes and a product to be processed W does not pass. In addition, one or a plurality of centrifugal projection devices 4 capable of accelerating the projection material are arranged on the upper portion of the cabinet 1.

  In the lower part of the cabinet 1, a vibration conveyor 5 that can transport the projected projection material and the product W to be processed and separate the product and the projection material, and a projection material that is connected to the vibration conveyor 5 and separated and collected from the vibration conveyor 5. A lower screw conveyor 6 to be transported is arranged. A bucket elevator 7 is connected to the lower screw conveyor 6 so that the projection material transported by the lower screw conveyor 6 can be lifted upward.

  A separator 8 having a dust collection duct flange is connected to the upper portion of the bucket elevator 7, and a projection material hopper 13 capable of temporarily storing the projection material is disposed below the separator 8. The projection material hopper 13 is connected to the centrifugal projection device 4 by a projection material introduction pipe 41. The number of projecting material introduction pipes 41 is the same as that of the centrifugal projection device 4. On the projection material introduction pipe 41, the same number of cut gates 42 as the centrifugal projection device 4 capable of adjusting and opening / closing the flow rate of the projection material introduced into the centrifugal projection device 4 are provided.

  On the front side of the cabinet 1, a bucket loader 9 capable of moving up and down and tilting a box-like bucket 91 that can carry a product distribution box Q containing the product W to be processed is disposed. The bucket loader 9 is attached with a slide mechanism 10 that slides the bucket 91 after ascending and allows the bucket 91 to enter the cabinet 1, and the bucket 91 opens and closes the lid after entering the cabinet 1 by the slide mechanism 10. An openable / closable lid 11 is attached to allow the product W to be processed stored in the cabinet 1 to be put on the trough 3 in the cabinet 1. Further, a tilting device 12 is provided in the vicinity of the product discharge portion of the vibration conveyor 5 so that the product distribution box Q can be lifted and lowered during product transfer.

  Further, the cabinet 2 and the separator 8 are connected to a dust collector by a duct (not shown), and dust generated during projection and dust mixed in the projection material are collected by the dust collector.

  The trough swinging type shot blasting method using the trough swinging type shot blasting apparatus configured as described above includes a processed product carrying-in process, a blasting process, and a processed product unloading process.

  The processed product carry-in step includes a processed product storage step for loading a product distribution box Q containing the processed product W into the bucket 91, and a cabinet for loading the processed product W into the trough 3 in the cabinet 1 by the bucket loader 9. A door loader that lifts and opens the door 2 that opens 1 and a bucket loader that moves the bucket 91 containing the product distribution box Q up and down and tilts the bucket 91 closer to the opening of the cabinet 1 opened by the door 2 opening step. After completion of the ascending inclination process, the bucket loader ascending inclination, the bucket loader slide entering process for entering the cabinet 1 and the entry into the cabinet 1 are completed, and the lid of the bucket 91 is opened and the product distribution box Q is opened. The lid opening process for putting the product W to be processed into the trough 3 in the cabinet 1, and the product in the product distribution box Q After all the articles W are put into the trough 3 in the cabinet 1, the bucket slide retreating process for sliding the bucket 91 out of the cabinet 1, the lid closing process for closing the cover of the bucket 91 after completion of the bucket slide retraction, and the inclination of the bucket 91 And the bucket loader lowering step of lowering.

  Here, in the bucket loader slide entering step, the bucket 91 is slid stepwise, and the product to be processed in the bucket 91 is carried into the trough 3 little by little so that most of the product does not flow instantaneously.

  The next blasting process includes a door sealing process in which the door 2 is lowered and sealed in order to seal the opened cabinet 1, and after the cabinet 1 is sealed by the lowering of the door 2, the centrifugal projection device 4 is rotated and then cut. A projecting process in which the projection material is ejected from the centrifugal projection device 4 by opening the gate 42, and a product in which the trough 3 is repeatedly swung within a certain angle range in order to stir the processed product W evenly during the projection. A stirring step. Since the trough 3 is constantly oscillating during the projection, the product to be processed W is well agitated, so that the surface of the product to be processed W can be uniformly treated by blasting. The blasting process is completed after a projection process is performed for a preset projection time based on the amount of the product W to be processed, the oxide scale properties, and the sand properties.

  In the process of carrying out the product to be processed, the projection material is discharged from the hole 31 of the trough 3 after the projection step is completed and the projection material is not ejected from the centrifugal projection device 4 and the dust generated in the cabinet 1 For the purpose of collecting dust, the projection material discharging step of repeatedly swinging the trough 3 in a range of a certain angle while the cabinet 1 is sealed by the door 2, and the product W to be processed after the completion of the projection material discharging step is the cabinet 1 To transport the trough 3 to the lower vibrating conveyor 5 below the trough 3, the trough reversing product transfer step for reversing the trough 3 stepwise to the unloading angle, and the product W to be processed to be unloaded from the trough 3 by the vibrating conveyor 5. The vibratory conveyor transfer step for receiving and unloading to the tilting device 12, and the product distribution box Q to be processed and transferred from the vibratory conveyor 5 by horizontally moving and tilting the product distribution box Q Consisting of a product transfer step of transferring to.

  Here, the projection material discharge step is completed after the projection material discharge time set in advance according to the amount and shape of the product W to be processed and the size of the projection material is up. Moreover, if the projection material discharge time is a projection material discharge time in which a volume approximately three times as large as the cabinet volume can be ventilated by the dust collector, the dust concentration in the cabinet is further reduced to a state equivalent to the outside air.

  Further, in the trough reversal product transfer step, a discharge angle at which all the products W to be processed placed on the trough 3 are discharged is set, and a trough 3 reversal intermittent time for an appropriate transfer amount is given in advance. Further, the tilting device 12 is raised before the product W to be processed from the vibrating conveyor 5 is transferred, and after the transfer of the product W to be processed from the vibrating conveyor 5 is started, the tilting device 12 is gradually lowered according to the transfer speed to transfer all the products W to be processed. In this state, the descent is completed, and a series of operations are also completed.

The movement of the projection material in the present invention is as follows.
First, the projection material projected from the centrifugal projection device 4 toward the product to be processed W in the trough 3 falls below the cabinet 1 from the hole 31 at the bottom of the trough 3 and is collected in one place by the vibration conveyor 5. . Next, the projection material is transferred to the bucket elevator 7 by the lower screw conveyor 6 connected to the vibration conveyor 5, and then transferred upward by the bucket elevator 7. The projection material transferred upward is thrown out to the separator 8, and after removing non-magnetic material such as sand with a magnet, it is relatively light through the dust collection air flow, that is, the crushed projection material and the product W to be processed. The scale pieces removed from are sucked into the dust collector, and only normal projection material is stored in the projection material hopper 13. The projection material stored in the projection material hopper 13 is sent to the centrifugal projection device 4 through the projection material introduction pipe 41 by the opening of the cut gate 42 and is projected again.

  As described above, according to the present invention, since the trough 3 is constantly oscillating during projection, the product W to be processed can be well stirred, and the surface of the product W to be processed can be uniformly blasted. There is no fear of making a dent on the product to be processed W in the carrying-in or carrying-out process.

DESCRIPTION OF SYMBOLS 1 Cabinet 2 Door 3 Trough 4 Centrifugal projection apparatus 5 Vibrating conveyor 6 Lower screw conveyor 7 Bucket elevator 8 Separator 9 Bucket loader 10 Slide mechanism 11 Opening and closing type lid 12 Tilt device 13 Projection material hopper 31 Hole 41 Projection material introduction pipe 42 Cut gate 91 bucket

Claims (6)

A trough-oscillating shot blasting device used to remove oxidized scales attached to metal products such as forgings, etc., which can accommodate the product to be processed W so that the splash of the projection material does not leak outside. An enclosed cabinet 1,
A door 2 that is located in front of the apparatus and is provided for loading the product W to be processed into the cabinet 1 and capable of opening and closing the cabinet 1 by raising and lowering;
A hole 31 disposed inside the cabinet 1 and supported by the cabinet 1 through bearings at both ends so as to be swingable. The hole 31 has a U-shaped ship bottom shape through which the projection material passes and the product to be processed W does not pass. Open trough 3,
One or a plurality of centrifugal projection devices 4 arranged at the top of the cabinet 1 and capable of accelerating the projection material;
Vibrating conveyor 5 that can transport the projection material and the product W to be processed arranged at the bottom of the cabinet 1 and separate the product and the projection material;
A lower screw conveyor 6 connected to the vibration conveyor 5 and transporting the projection material separated and recovered from the vibration conveyor 5;
A bucket elevator 7 connected to the lower screw conveyor 6 and capable of lifting the projection material transported by the lower screw conveyor 6 upward;
A separator 8 connected to the upper part of the bucket elevator 7 and having a dust collecting duct flange;
A projection material hopper 13 disposed at the bottom of the separator 8 and capable of temporarily storing the projection material;
A projection material introduction pipe 41 of the same number as the centrifugal projection device 4 arranged to connect the projection material hopper 13 and the centrifugal projection device 4;
The number of cut gates 42 which are located on the projection material introduction pipe 41 and can adjust and open and close the flow rate of the projection material introduced into the centrifugal projection device 4,
A trough swinging type characterized by comprising: a bucket loader 9 capable of moving up and down and tilting a box-shaped bucket 91 which can be loaded with a product distribution box Q which is disposed on the front side of the cabinet 1 and which stores the product W to be processed. Shot blasting device.   The trough rocking type shot blasting apparatus according to claim 1, wherein the bucket loader (9) includes a slide mechanism (10) that slides the bucket (91) after being lifted to allow the bucket (91) to enter the cabinet (1).   The bucket loader 9 is attached to the bucket 91 and can be opened and closed after the cabinet 1 enters the cabinet 1 by the slide mechanism 10 so that the product to be processed W stored in the bucket 91 can be put on the trough 3 in the cabinet 1 by opening and closing the plate. The trough rocking type shot blasting apparatus according to claim 2, wherein the trough swinging type shot blasting apparatus is provided.   6. A tilting device 12 capable of horizontally moving and tilting a product distribution box Q for carrying out a product W subjected to shot blasting is disposed in the vicinity of a product discharge portion of the vibration conveyor 5. The trough rocking type shot blasting device according to claim 1. The trough oscillating shot blasting device according to any one of claims 1 to 5 is used to remove oxide scale attached to a metal product such as a forged product or sand attached to a metal product such as a cast product. A trough oscillating shot blasting method,
It consists of a processed product loading process, a blasting process, and a processed product unloading process.
The process for bringing in the product to be processed
A processed product storage process for carrying a product distribution box Q storing the processed product W into the bucket;
A door opening step for lifting and opening the door 2 for opening the cabinet 1 in order to put the product W to be processed into the trough 3 in the cabinet 1 by the bucket loader;
A bucket loader lifting and tilting step in which the bucket 91 containing the product distribution box Q is moved up and down and tilted to bring the bucket 91 closer to the opening of the cabinet 1 opened by the door 2 opening step;
A bucket loader slide entering step of sliding the bucket 91 into the cabinet 1 after completion of the bucket loader ascending inclination;
A lid opening step of opening the lid of the bucket 91 after completion of entering the cabinet 1 and putting the product W to be processed in the product distribution box Q into the trough 3 in the cabinet 1;
A bucket slide retraction process in which the bucket 91 is slid out of the cabinet 1 after all the products W to be processed in the product distribution box Q have been put into the trough 3 in the cabinet 1;
A lid closing step of closing the lid of the bucket 91 after the bucket slide retreat is completed;
It consists of a bucket loader lowering process that returns and lowers the bucket inclination,
The blasting process is
A door sealing step of lowering and sealing the door 2 to seal the opened cabinet 1;
A projecting step of rotating and starting the centrifugal projection device 4 after the cabinet 1 is sealed by lowering the door 2 and then injecting a projection material from the centrifugal projection device 4 by opening the cut gate 42;
A product agitating step of repeatedly swinging the trough 3 in a range of a certain angle in order to agitate the treated product W evenly during the projection;
The unprocessed product unloading process consists of
After the projection process is completed and the projection material is no longer ejected from the centrifugal projection device 4, the projection material collected on the trough 3 is discharged from the hole 31 of the trough 3 and the dust is collected in the cabinet 1 for the purpose of collecting the door. A projecting material discharging step of repeatedly swinging the trough 3 within a certain angle range with the cabinet 1 sealed from 2;
A trough reversal product transfer step for stepwise reversing the trough 3 to the carry-out angle in order to carry out the product W to be processed below the trough 3 to the vibrating conveyor 5 below the cabinet 1 after the projecting material discharge step is completed;
A vibrating conveyor transfer step of receiving the product W to be processed and transported downward from the trough 3 by the vibrating conveyor 5 to the tilting device 12;
A trough oscillating shot blasting method comprising a product transfer step of transferring a product W to be processed, which is transferred from the vibrating conveyor 5 by horizontally moving and tilting the product receiving box Q, to the product receiving box Q.   The bucket loader ascending / descending and tilting process includes a process of accumulating the operating time of the ascending / descending and tilting operations and issuing a process prohibition and an inspection warning when a predetermined safe operating time has elapsed. Item 6. The trough swing type shot blasting method according to Item 5.

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