JPH0627338Y2 - Shot blasting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a shot blasting device that embrittles and removes burrs in, for example, plastics molded products and die cast molded products at low temperatures.

"Prior Art" Generally, a deburring device for projecting and removing burrs remaining in a plastic molded product or a die cast molded product by projecting a projection material at a low temperature is disclosed in, for example, Japanese Patent Publication No. 37-3125. The endless apron type conveyor is supported on the barrel head, the jetting medium is projected on the object to be treated to remove the burrs by the friction medium, and the waste and friction medium are removed by the rotary sieve installed at a high place by the elevator. Equipment for deburring by separating reusable friction agents, and storage basket B for storing deburring products in cabinet A as shown in FIG. 4 described in the Osaka Oxygen Catalog.
The projection material projection wheel C and the refrigerant spray nozzle D are provided obliquely, and the burr and the projection material after deburring are dropped and supplied through the transfer pipe E to the round vibrating screens F and G installed at a high place. Then, the projection material separated from the storage hopper H installed immediately below the vibrating screens F and G is transferred to the projection device J again through the transport pipe I.

The conventional deburring device configured as described above has an advantage that the debris embrittled at a low temperature can be efficiently removed and the selected shot material can be efficiently reused. Since the vibrating sieve for separating the blast material and the burr is installed at a high place, maintenance of the vibrating screen is troublesome, and the mixture of the blast material and the burr and the reusable blast material are transferred. Equipment maintenance and operation costs,
It has the drawbacks of high cooling costs and high equipment costs.

"Purpose of the present invention" In view of the above-mentioned conventional drawbacks, the present invention is small and compact, easy to maintain and maintain, low in operating and cooling costs, and can be installed at a relatively low installation cost. To get a shot blasting device.

"Means for achieving the object of the present invention" The present invention is a case formed to be kept airtight, a hopper fixed in the case so as to divide the inside of the case into upper and lower processing chambers, A basket supporting deburring products provided in the upper processing chamber partitioned by this hopper,
An opening / closing door for sealingly opening and closing an opening formed in the housing in a portion where the upper processing chamber is located, and a burr etc. falling from the hopper provided in the lower processing chamber partitioned by the hopper. A sorting device for sorting shot material containing dust into dust and shot material, a shot material storage tank provided in the lower processing chamber for storing the shot material sorted by the sorting device, and the shot material of the shot material storage tank Is sucked through the projection material transport pipe by the negative pressure generated by driving the impeller, and the impeller type provided on the upper part of the casing so that the projection material can be projected onto the deburring product supported by the basket. And a refrigerant supply device attached to the casing for keeping the inside of the casing at a low temperature.

"Embodiment of the Invention" Hereinafter, the invention will be described in detail with reference to an embodiment shown in the drawings.

In the embodiment shown in FIGS. 1 to 3, reference numeral 1 denotes an airtightly held casing.

Reference numeral 2 denotes a hopper fixed inside the housing 1 so as to partition the inside of the housing 1 into an upper processing chamber 3 and a lower processing chamber 4.

Reference numeral 5 denotes a one-sided opening / closing door that opens and closes the opening 6 formed in the housing 1 in a portion where the upper processing chamber 3 is located so as to be able to be sealed.

Reference numeral 7 denotes a rotating device that rotates a basket 8 that stores deburring products in the processing chamber 3. The rotating device 7 is provided on the outer wall surface 1a of the housing 1 and the hopper 2, for example, 30
Rotating shaft 9 rotatably mounted at an inclination of ~ 60 °
A support 10 detachably supporting the basket 8 fixed to the tip of the rotary shaft 9; and the casing 1 for rotating the rotary shaft 9 connected to the rear end of the rotary shaft 9. And a motor 11 attached to the.

As shown in FIGS. 2 and 3, the basket 8 is a basket main body 12 formed in a cylindrical shape by a perforated plate.
The bottom of the basket body 12 is
A bottom plate 13 made of a perforated plate that is fixed in a tilted state of 0 °, and a plurality of horizontal plates at positions intersecting with the tilt center line of the basket 8 during rotation of the basket 8 fixed to the inner wall surface of the basket body 12. In this embodiment, four stirring blades 1
It is composed of 4, 14, 14, and 14.

Reference numeral 15 is a sorting device installed in the lower processing chamber 4 and immediately below the opening 2a of the hopper 2 so that vibrations are transmitted to the hopper 2. The sorting device 15 is directly below the opening 2a of the hopper 2. The vibrating screen 16 for burr selection for selecting burr larger than the blast material installed in the
A blasting material sorting vibrating screen 17 for screening the blasting material provided at the lower part of 16 and dust smaller than the blasting material provided at the lower position of the blasting material screening vibrating screen 17 through the support base 18. Dust storage container 19 to be stored and the vibrating screen for burr selection
A burr storage tank 21 for storing the burr selected by 16 through a discharge pipe 20, a discharge pipe 23 for guiding the projection material selected by the vibrating screen 17 for selecting the projection material to a projection material storage tank 22, and the dust storage A dust storage tank 25 that stores the dust stored in the container 19 via a discharge pipe 24.

Reference numeral 26 is a single-opening open / close door that can open and close the opening 27 formed in the housing 1 in a position where the burr storage tank 21 and the dust storage tank 25 are located in a sealed state.

The blast material storage tank 22 is a blast material storage tank main body for storing the blast material.
28, a vibration motor 29 attached to the side surface of the blast material storage tank body 28 for vibrating the projection material stored in the blast material storage tank body 28, and a lower portion of the discharge pipe 23 of the blast material storage tank body 28. And a chute 30 attached to the blast material storage tank main body 28 so as to guide the blast material from the discharge pipe 23 to a substantially central portion.
It consists of and.

Reference numeral 31 denotes a projector capable of projecting a projection material having an impeller 32 portion covered with a cover 33 on the top plate 1b portion of the housing 1 onto a deburring product housed in the basket 8.

Reference numeral 34 denotes a projecting material feed pipe for sucking and supplying the projecting material in the projecting material storage tank 22 by driving the projecting machine 31. One end of the projecting material transport pipe 34 opens into the projecting material storage tank 22 and the other end. Is a projection material transport pipe body 35 connected to the suction side of the projector 31,
A bypass pipe 37, one end of which is connected to the projection material transport pipe main body 35 on the side of the projector 31 and the other end of which is provided with a control valve 36 for adjusting the suction pressure opened in the upper processing chamber 3 of the housing 1. It consists of and.

Reference numeral 38 is a supply device of an inert gas or the like for efficiently carrying the projection material in the projection material transport pipe 34. One end of the supply device 38 of the inert gas or the like is opened in the lower processing chamber 4. And an intake pipe 39 attached to the projection material storage tank 22 such that the other end thereof is located in the trumpet-shaped opening 35a of the projection material transport pipe main body 35 and a portion of the intake pipe 39 on the outlet side. Supply pipe for supplying the generated inert gas through the control valve 40
It is composed of 41 and.

Reference numeral 42 denotes a refrigerant supply device for supplying a refrigerant such as liquefied inert gas such as liquefied nitrogen or liquefied carbon dioxide gas into the upper processing chamber 3, and the refrigerant supply device 42 supplies the refrigerant into the upper processing chamber 3. A refrigerant supply pipe 44 in which an electromagnetic valve 43 is interposed, a temperature sensor 45 for measuring the temperature in the upper processing chamber 3, and a command from the temperature sensor 45 causes the electromagnetic valve 43 to be opened and closed, And a controller 46 for adjusting the supply amount of

Reference numeral 47 denotes a top plate 1 of the housing 1 so as to open to the upper processing chamber 3.
It is an exhaust pipe attached to b for discharging the vaporized gas generated in the upper processing chamber 3 into the atmosphere.

"Operation of the embodiment of the present invention" The shot blasting device 48 having the above-mentioned configuration stores the deburring product in the basket 8 and operates the refrigerant supply device 42 to cool the inside of the upper processing chamber 3 to a predetermined low temperature.

After that, the rotating device 7, the sorting device 15, the vibration motor 29, the inert gas supply device 38, and the projector 31 are operated.

By the operation of each of these devices, the projection material 49 in the projection material storage tank 22 is sucked by the driving of the impeller 32 of the projection machine 31, and is projected on the deburring product in the basket 8.

At this time, since the basket 8 rotates, the deburring products stored inside the stirring blades 14, 14, 14, 14 and the slanted bottom plate 1 are used.
Since it is efficiently swirled by 3, the shot material is efficiently shot on the deburring product, and the burr is embrittled by cooling, so that the burr is efficiently removed.

Further, the blast material 49 projected in the upper processing chamber 3 is the sorting device 15
The hopper 2 vibrated by means surely drops it to the sorting device 15, and the sorting device 15 sorts it into burrs larger than the blast material, blast material, and dust smaller than the blast material, and the blast material 49 thus sorted is It is naturally dropped and supplied into the projectile storage tank 22.

The blast material stored in the blast material storage tank 22 passes through the blast material transport pipe 34 by the drive of the impeller 32 of the blast machine 31, and the blast machine is projected.
It is sucked into 31, but at this time, since it is sucked in a mixed state with the inert gas or the like by the projecting material and the supply device 38 of the inert gas or the like, it is efficiently and smoothly transferred.

Further, the control valve 36 of the bypass pipe 37 is adjusted to adjust the suction pressure of the projection material sucked into the projector 31 for use.

After removing the burrs from the deburred product in the basket 8, the operation of the projector 31 and the rotating device 7 is stopped, the opening / closing door 5 is opened, and the processed product in the basket 8 is taken out from the opening 6. , Unprocessed deburring product is stored, and deburring work is performed by the same operation as described above.

"Effects of the Present Invention" As is apparent from the above description, the following effects can be obtained in the present invention.

(1) A housing formed to be hermetically sealed, a hopper fixed in the housing so as to divide the inside of the housing into upper and lower processing chambers, and an upper processing chamber partitioned by the hopper. A basket for supporting the deburring product, an opening / closing door for sealingly opening and closing an opening formed in the housing in a portion where the upper processing chamber is located, and a lower processing chamber partitioned by the hopper. Further, a sorting device for sorting the projection material containing dust such as burrs falling from the hopper into dust and the projection material, and the projection material provided in the lower processing chamber for storing the projection material sorted by the sorting device. The storage tank and the projection material in this projection material storage tank are sucked through the projection material transport pipe by the negative pressure generated by the drive of the impeller, so that the projection material can be projected onto the deburring product supported by the basket. Since it is composed of an impeller-type projector provided on the upper part of the housing and a refrigerant supply device attached to the housing for making the inside of the housing have a low temperature, the cooling air by the refrigerant for processing at a low temperature is used. Circulates in the housing and in the blast material transport pipe, so that it can be prevented from flowing out.

Therefore, the cost required for cooling can be reduced.

(2) According to (1) above, since the device for selecting the projection material projected by the projector is installed in the housing, the projection material transfer mechanism including the burr is simple and can be manufactured at low cost.

(3) Due to the above (1), the device can be made compact and compact.

(4) Due to the above (1) to (3), the installation is easy and the operating cost can be reduced.

(5) According to the above (1), the projection material in the projection material storage tank can be automatically sucked and projected by the negative pressure generated by the driving of the impeller-type projector via the projection material transport pipe. The structure for supplying the projection material sorted by the sorting device to the projector can be made simple and inexpensive.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention, FIG. 2 is a side view showing a basket, FIG. 3 is a sectional view taken along line 3-3 of FIG. 2, and FIG. It is a figure. 1: housing, 2: hopper, 3: upper processing chamber, 4: lower processing chamber, 5: open / close door, 6: opening, 7: rotating device, 8: basket, 9: rotating shaft, 10: support, 11: motor, 12: basket body, 13: bottom plate, 14: stirring blade, 15: sorting device, 16: vibrating screen for burr sorting, 17: vibrating screen for sorting projection material, 18: support, 19: dust container , 20: discharge pipe, 21: burr storage tank, 22: shot material storage tank, 23: discharge pipe, 24: discharge pipe, 25: dust storage tank, 26: open / close door, 27: opening, 28: projection material storage tank main body , 29: Vibration motor, 30: Shoot, 31: Projector, 32: Impeller, 33: Cover, 34: Projectile material transport pipe, 35: Projectile material transport pipe body, 36: Control valve, 37: Bypass pipe, 38 : Supply device for inert gas, 39: Intake pipe, 40: Control valve, 41: Gas supply pipe, 42: Refrigerant supply device, 43: Solenoid valve, 44: Refrigerant supply pipe, 45 Temperature sensor, 46: controller, 47: exhaust pipe, 48: shot blasting device, 49: projection material.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kiyoshi Sudo 3-23, Misaki-cho, Chiyoda-ku, Tokyo 3-23 Akiwa Carbonate Co., Ltd. (72) Nobuyuki Karasawa 3--3, Misaki-cho, Chiyoda-ku, Tokyo Issue: Showa Carbonate Co., Ltd. (72) Inventor: Akinori Nakayama 1116 Takada, Kashiwa City, Chiba 50 Japan Industrial Machinery Sales Co., Ltd. (56) Reference: JP-A-55-137884 (JP, A) JP-B 59- 46742 (JP, B2)

Claims (5)

[Scope of utility model registration request] 1. A casing formed so as to be kept airtight, a hopper fixed inside the casing so as to divide the inside of the casing into upper and lower processing chambers, and an upper processing chamber partitioned by the hopper. A basket for supporting the deburring product provided, an opening / closing door for sealingly opening and closing an opening formed in the housing in a portion where the upper processing chamber is located, and a lower processing chamber partitioned by the hopper. A sorting device for sorting the projection material containing dust such as burrs falling from the provided hopper into dust and the projection material, and the lower processing chamber accommodating the projection material sorted by the sorting device are provided. The projectile material storage tank and the projectile material in the projectile material storage tank are sucked through the projectile material transport pipe by negative pressure generated by driving the impeller,
An impeller-type projector provided on the upper part of the housing so as to project a projection material onto the deburring product supported by the basket, and a low temperature inside the housing attached to the housing A sailboat blasting device comprising a refrigerant supply device. 2. A vibrating screen for burr selection, which is installed just below the opening of the hopper, and which selects a burr larger than the projecting material, and a projecting material provided under the burr selecting vibrating screen. Claims for utility model registration, characterized in that it comprises a vibrating screen for selecting a shot material and a dust storage container provided under the vibrating screen for selecting a shot material for storing dust smaller than the shot material. The shot blasting apparatus according to item 1. 3. A blast material storage tank is a blast material storage tank body capable of storing blast material, and a vibration attached to the blast material storage body for imparting vibration to the blast material stored in the blast material storage tank body. The shot blasting device according to claim 1 or 2, characterized in that the shot blasting device comprises a motor. 4. A blasting material storage tank is a blasting material storage tube main body capable of storing blasting material, and a blasting material transportation tube for supplying an inert gas or the like into the blasting material transportation tube opening in the blasting material storage tank main body. Shot blasting according to any one of claims 1 to 3, characterized in that it comprises an inert gas supply device attached so as to facilitate the suction transportation of the shot material. apparatus. 5. A blast material transport pipe having one end opened into the blast medium storage tank and the other end connected to the suction side of the blast machine, and a blast material transport tube having one end on the blast machine side. A utility model registration claim, characterized in that it comprises a bypass pipe communicating with the main body, the other end of which is opened in the upper processing chamber of the housing and provided with a control valve for adjusting suction pressure. The shot blasting apparatus according to any one of 4 above.