JPH0999360A - Shake-out machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shake-out machine, in which a gear box for rotating one pair of unbalance weights mutually in the reverse directions does not heat with hot air from a high temp. casting and the vibrating balance is good. SOLUTION: The gear box 100 is arranged at the center part between the unbalance weights arranged on one side of a blade plate and the unbalance weights arranged on the other side of a blade plate in a vibrating trough 11, and a jacket is arranged at the side surface of the gear box 100 to cool the gear box by flowing cooling water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shake-out machine vibrated by an unbalanced weight, and more specifically, it shakes a mold sand from a high temperature casting to which the mold sand just after casting adheres by vibration. It relates to a machine for transporting while transferring.

[0002]

2. Description of the Related Art The castings taken out from the mold have mold sand adhered to the surface, which must be removed. However, as is well known, it is hot and heavy, so when it is processed in large quantities. Is applied to shake off the mold sand. For example, casting of elbows and cheeses is performed by pouring hot water (molten metal) into about 10 casting molds from one sprue. Therefore, in the as-cast condition, a casting E having the mold sand attached thereto and a long-sized product (such as a sump, a spout stick, a runner, and a weir) corresponding to the gate having the mold sand attached thereto are mixed. Hereinafter, this long object is abbreviated as a sprue G.

FIG. 16 is a plan view of a shake-out machine 3 which has been conventionally used, and FIG. 17 shows [1] in FIG.
FIG. 7 is a side view taken along line [7]-[17]. The shakeout machine 3 of the conventional example is formed by connecting a first shakeout machine 210 and a second shakeout machine 220 in an L-shape when viewed from the plan view of FIG. The mixture is thrown into the left end portion of the first shakeout machine 210 in FIG. 16 to drop the mold sand, separated by the second shakeout machine 220 into the casting E and the sprue G, and discharged from the upper end portion. The first shakeout machine 210 has a vibration trough 21.
1, the vibration exciter 216 that gives vibration to the vibration shaker, and the second shakeout machine 220 include a vibration trough 221, and a vibration shaker 226 that gives vibration to the vibration trough 221, and the vibration shaker 216 and the vibration shaker 2
26 is configured in exactly the same manner. In FIG. 16, the casting E and the sprue G are shown scatteredly on the vibrating trough 211 of the first shakeout machine 210, but in reality, the casting E and the sprue G are fully filled.

As shown in FIG. 17, the vibrating trough 211 of the first shake-out machine 210 has an inverted cross section in which the casting E is easy to be put in and the transfer surface 212 enhances the contact between the casting E and the sprue G. As shown in FIG. 16, a trapezoidal shape is provided with a hole 215 having a diameter of 15 mmφ for sieving off the mold sand that has fallen off, on the upstream side of the transfer surface 212. The mold sand screened downward is collected in a pan even though not shown.

The vibrating trough 221 of the second shakeout machine 220 has a rectangular shape whose cross-section is open upward, and a narrow transfer immediately below the upstream portion where the downstream end of the vibrating trough 211 of the first shakeout machine 210 projects. A slope base 225 is provided leaving the surface 222, and a slope 225a that slopes downward in the direction indicated by arrow m in FIG. 16 and a slope 225b that slopes downward in the direction indicated by arrow n are formed. As a result, the casting E and the sprue G introduced from the vibration trough 211 are transferred to the transfer surface 2 at the downstream portion of the vibration trough 221.
It is designed to expand to 22.

Further, holes 227 having a diameter of 120 mmφ are opened in a row in the width direction on the transfer surface 222 at the downstream end of the vibrating trough 221, and in parallel to the holes 227, a long axis of 140 mm in the transfer direction is orthogonal to this. Short hole 120 mm hole 228
Is opened, and casting E from which mold sand has been dropped, such as elbows and cheeses, falls according to its size. The casting E that has fallen is discharged from a discharge chute 229 provided on the bottom surface side of the vibration trough 221, and the gate G from the downstream end of the vibration trough 221 is indicated by a dashed-dotted line.
It is discharged to 81.

As shown in FIG. 17, the vibrating trough 221 of the second shakeout machine 220 is a pedestal 23 fixed on the floor.
9 is installed via a vibration-proof coil spring 238, but this also applies to the vibration trough 211 of the first shakeout machine 210.

As described above, the first shakeout machine 2
Since the shaker 216 of No. 10 and the shaker 226 of the second shakeout machine 220 are exactly the same, the shaker 226 will be described. Referring to FIG. 18 which is a plan view of the vibration exciter 226 and FIG. 19 which is a cross-sectional view taken along line [19]-[19] in FIG.
It is installed on two beam members 235 in the shape of a rectangular cylinder extending in parallel between the wing plates 233, 234 having a mountain shape when viewed from the side surface on the side walls 223, 224 of 21.

That is, the beam member 23 on the vane 233 side.
5, on the two support plates 236 fixed vertically, the half-moon shaped unbalanced weights 241a and 241b are attached to the rotary shaft 243 on both sides of the bearing case 253, and both sides of the bearing case 254 are lined up in the transfer direction. The unbalanced weights 242a and 242b on the rotary shaft 293.
It is attached to and provided. Similarly, the vibration trough 22
On the vane 234 side of No. 1, the bearing cases 253, 25 on the two support plates 236 ′ vertically fixed to the beam 235.
Unbalanced weights 241a ', 24 on both sides of 3'
1b 'is attached to the rotating shaft 243', and the unbalanced weights 242 are also provided on both sides of the bearing 254 '.
A'and 242b 'are provided by being attached to the rotating shaft 293'.

The rotary shaft 243 and the rotary shaft 243 'are unbalanced weights 241a, 241b, 241.
a ', 241b' are connected to the rotary shaft 288 by couplings 244 and 244 'so that they are oriented in the same direction, and are integrated with each other, and the rotary shaft 293 and the rotary shaft 293' are unbalanced weights 242a, 242b, 242
The a 'and 242b' are connected to and integrated with the rotary shaft 289 by couplings 294 and 294 'so that they are oriented in the same direction.

Further, the unbalanced weight 241
a, 241b, 241a ', 241b' and unbalanced weights 242a, 242b, 242a ', 242
b'is rotated in the opposite direction, and the unbalanced weights 241a, 241b, 241 are related to the rotation direction.
a ', 241b' and unbalanced weight 242a,
242b, 242a ', 242b' have the same phase relationship, in other words, in the middle of rotation, the moment when the half-moon shaped arc portion faces outward and the farthest, and the arc portion faces inward and comes closest. The rotating shaft 243 'and the rotating shaft 293' are provided with a positional relationship such that
And extend into a gearbox 290 located laterally outside the vibration trough 221. In the gear box 290, gears having the same number of teeth attached to the respective rotary shafts 243 ′ and 293 ′ are meshed with each other with an even number of gears interposed. The gear box 290 is the bearing case 25.
It is fixed on the same base plate as 3 ', 254'.

The rotating shaft 243 extends outwardly from the unbalanced weight 241a and is attached with a pulley 245. The pulley 245 is attached to the output shaft pulley 248 of the electric motor 247 on the stationary stand 232. Is wrapped around. That is, the belt is driven by the electric motor 247, and the unbalanced weights 241a, 241b,
241a ', 241b' and unbalanced weight 24
2a, 242b, 242a ', 242b' are rotated in a pair in opposite directions, and the centrifugal forces generated in each are combined to generate linear vibration in a direction perpendicular to the fixed surface of the vibrator 226, the second shakeout in FIG. Vibration trough 221 of machine 220
A linear vibration in a direction indicated by an arrow r is applied to the casting E and the gate G in the vibration trough 221 are transferred in a direction indicated by an arrow s.

With reference to FIG. 19 in particular, the gear box 290 of the vibration exciter 226 is originally located at the intermediate position between the bearing cases 253 and 253 'and between the side walls 223 and 224 of the vibration trough 221 from the viewpoint of vibration balance. It is preferable to position it right above the central portion of the casting trough 221.
In order to avoid troubles caused by heating the lubricating oil by the hot air rising from the gate G, the vibration trough 2
It is located outside the side of 21. But,
Since the gear box 290 is provided at the asymmetrical position, it is difficult to obtain uniform vibration in the vibration trough 222, and the parts that are in mechanical contact are likely to be unevenly worn. Of course, without using the gear box 290, the rotary shafts 243, 288,
It is possible to rotate the 243 'and the rotating shafts 293, 289, 293' in opposite directions by using different electric motors, but it is costly to manufacture the shakeout machine by rotating the two electric motors in synchronization. Is not the preferred means.

[0014]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above problems, and a vibrating trough is uniformly vibrated by a vibration exciter using an unbalanced weight, and a pair of unbalanced weights are rotated in opposite directions. An object of the present invention is to provide a shakeout machine in which the temperature does not rise even if the gear box to be heated is heated by the hot air of the casting.

[0015]

[Means for Solving the Problems] The above objects are to provide a vibrating trough for dropping a mold sand while transferring a high temperature casting by vibration, and a vibrating trough for imparting vibration to the vibrating trough. A first unbalance weight attached at a predetermined angle to a first rotating shaft pivotally supported by a pair of bearings fixed on both side walls; A second unbalance weight attached to a second rotating shaft that rotates in a direction opposite to the first rotating shaft at an angle having the same phase as the first unbalance weight in the rotating direction; and the first rotating shaft. And a gear box for accommodating gears attached to and meshing with the first rotating shaft and the second rotating shaft, respectively, for rotating the second rotating shaft in opposite directions. In an out machine, the gear box is provided at a central portion between both side walls of the vibration trough, and a cooling water jacket is provided on at least one of a bottom surface portion and a side surface portion of the gear box, A shakeout machine, characterized in that the gearbox is cooled by passing water through the cooling water jacket.

[0016]

[Function] Since the gearbox of the shakeout machine is installed in the center between the bearing cases on both side walls of the vibrating trough, the vibrating trough is evenly vibrated, and the gearbox is directly above the transfer surface of the vibrating trough. Even if there is, the temperature does not rise even if it is heated by the hot air of the casting because it is cooled by passing water through the jacket.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A shakeout machine according to an embodiment of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 is a plan view of a shakeout machine 1 of the first embodiment, FIG. 2 is a side view taken along line [2]-[2] in FIG. 1, and FIG. 1 is a side view in the [3]-[3] line direction, and FIG. 4 is a front view in the [4]-[4] line direction in FIG. 1.

The shakeout machine 1 of the present embodiment is formed by connecting a first shakeout machine 10 and a second shakeout machine 20 in an L-shape when viewed from the plan view of FIG. The sprue G is the first shakeout machine 10 in FIG.
Is put into the left end of the vibration trough 11 to drop the mold sand, separated by the second shakeout machine 20 into the casting E and the sprue G, and discharged from the upper end. The first shake-out machine 10 includes a vibration trough 11 and a vibration exciter 16 thereof, and the second shake-out machine 20 includes a vibration trough 21 and a vibration exciter 26 thereof. The shake of the conventional example shown in FIGS. It is common in many places with the out machine 3, and in particular, its vibration troughs 11 and 21 have exactly the same configuration. Therefore, the common constituent elements are given the same reference numerals in the last two digits, and duplicate explanations are omitted. Although the shakeout machine 1 of the present embodiment is different from the shakeout machine 3 of the conventional example in the shakers 16 and 26, since the shakers 16 and 26 are configured in exactly the same manner, the shaker machine will be described below. The shaker 16 will be mainly described.

The vibrator 16 is a side wall 13 of the vibration trough 11,
It is installed on a support plate which is vertically fixed to two rectangular cylindrical beam members 35 which are arranged in parallel between the wing plates 33 and 34 each having a mountain shape when viewed from the side surface on 14.

The vibrator 16 is a plan view thereof, and FIG. 6 is a sectional view taken along line [6]-[6] in FIG.
With respect to the beam member 35 between the blades 33, 34, the gear box 100 which is water-cooled on the two support plates 37 fixed vertically at the center thereof and the blade member 35 vertically on the blade 33 side. Bearing case 5 on two fixed support plates 36
3, 54, and bearing cases 53 ', 54' on two support plates 36 'fixed vertically on the vane 34 side.

For water cooling of the gear box 100, the cooling water from the water supply pipe 191 is supplied to the water supply nozzle 181 of the gear box 100, and the cooling water discharged from the discharge nozzle 186 is drained via the drain pipe 192. A cooling water channel is formed.

Unbalanced weights 41a and 41b are provided on both sides of the bearing case 53 so as to be attached to the rotary shaft 43, and unbalanced weights 42a and 42b are provided on both sides of the bearing case 54 aligned in the transfer direction. It is installed by being attached to. Also, the bearing case 53 '
Unbalanced weights 41a 'and 41b' on both sides of
Are attached to the rotary shaft 43 ', and the unbalanced weights 4 are provided on both sides of the bearing case 54' arranged in the transfer direction.
2a 'and 42b' are attached to the rotary shaft 93 '.

The structure of each unbalanced weight described above is similar to that of the conventional example, but differs from the conventional example in the following points. Rotating shaft 4 of unbalanced weights 41a and 41b
3 is a rotary shaft 131 belonging to a gear box 100 described later.
Through the unbalanced weights 41a ', 4 on the other side
It is connected to the rotary shaft 43 'of 1b' and rotates as the same rotary shaft. Also, unbalanced weight 41
a, 41b and 41a ', 41b' are rotating shafts 43, 43 '
It is attached at the same angle to. Similarly, the rotating shaft 93 of the unbalanced weights 42a and 42b is connected to the rotating shaft 9 of the unbalanced weights 42a 'and 42b' on the opposite side via the rotating shaft 134 belonging to the gear box 100.
It is connected with 3'and unbalanced weight 42
a, 42b, 42a ', 42b' are rotating shafts 93, 93 '
Mounted at the same angle to. In the gear box 100, the gear 151 of the rotary shaft 131 and the gear 154 of the rotary shaft 134 have the same number of teeth in the gear box 100, and they are meshed with each other via gears 152 and 153 in the middle. Balance weights 41a, 41
b, 41a ', 41b' and unbalanced weight 42
It is adapted to rotate in the opposite direction to a, 42b, 42a ', 42b'. The term "meshed gears" used in the claims includes a case where a gear is interposed in the middle. And the unbalanced weights 41a, 4
1b, 41a ', 41b' and unbalanced weight 4
2a, 42b, 42a 'and 42b' are attached so as to have the same phase in the rotation direction. In other words, the unbalanced weight 41a during the rotation.
And 42a are attached so that the half-moon shaped arc portions may face each other closest to each other and may face the opposite direction farthest apart. Actually, the unbalanced weights 41a, 41b and 42a, 42b are both covered with a safety cover as shown by the one-dot chain line, and similarly, the unbalanced weights 41a ', 41b' and 42a ', 42b.
Together with b ', it is covered with a safety cover.

Further, referring to FIG. 5, the rotating shafts 43 of the unbalanced weights 41a and 41b are extended to the outside of the unbalanced weight 41a and a pulley 45 is attached thereto, so that the electric motor on the stationary stand is fixed. A V-belt 49 is wound around a pulley 48 attached to the output shaft of 47. That is, the belt is driven by the electric motor 47, and the unbalanced weights 41a, 41b, 41
a ', 41b' and unbalanced weights 42a, 42
b, 42a ′, 42b ′ rotate in opposite directions, and the centrifugal forces generated in each of them are combined to give linear vibration in the direction indicated by arrow p to the vibration trough 11 shown in FIG. The casting is transferred in the direction indicated by arrow q.

The electric motor 47 is controlled by a variable frequency inverter so that the transfer force of the vibrator 16 can be adjusted. The shaker 26 for exciting the vibration trough 21 of the second shakeout machine 20 is also independently inverter-controlled in the same manner, and the first shakeout machine 10 and the second shakeout machine 20 each have the most suitable vibration. To be given.

The gear box 100, which constitutes the main part of the present invention, and its cooling will be described below. 5 and 6, the gear box 100 is installed on a pedestal 109 on two vertical support plates 37 fixed to the beam members 35, 35 passed between the blades 33, 34 of the vibration trough 11. ing. Further, details of the gear box 100 are shown in FIG. 7 which is a partially cutaway side view, FIG. 8 which is a partially cutaway plan view, and FIG. 9 which is a cross-sectional view taken along line [9]-[9] in FIG. There is. That is, referring to FIG. 9 in particular, the gear box 100 includes a bottom plate 101 having an inner bottom plate 103, a side plate 102, and a top lid 1 having hooks 105 on a pedestal 109.
04, and a side surface thereof is surrounded by a jacket plate 106 to provide a cooling water jacket 182.

That is, referring to FIGS. 7 and 8, a rotary shaft 131 pivotally supported by ball bearings 121a and 121b fixed in bearing cases 111a and 111b attached to the side plates 102a and 102b of the gear box 100, respectively.
The gear 151 is attached to the ball bearings 112a and 112b in the bearing cases 112a and 112b.
A gear 152 is attached to a rotary shaft 132 which is rotatably supported by 122b, and a gear 153 is attached to a rotary shaft 133 which is rotatably supported by ball bearings 123a and 123b in the bearing cases 113a and 113b.
A gear 154 is attached to a rotary shaft 134 that is rotatably supported by the ball bearings 124a and 124b, and gears 151, 152, 153, and 154 having the same number of teeth are meshed in order, and a predetermined height level is set in the gear box 100. It is dipped in the oil contained in and rotated.

The rotating shaft 131 extends to both sides of the gear box 100, and the unbalanced weight 41
a, 41b to the rotating shaft 43 by a coupling 44 and unbalanced weights 41a ', 41b'.
The rotary shaft 43 'is connected to the rotary shaft 43' by a coupling 44 'to rotate integrally with the rotary shaft 43'.
The rotating shaft 93 of a and 42b is connected by a coupling 94, and the rotating shaft 93 'of the unbalanced weights 42a', 42b 'is connected by a coupling 94' so that they rotate integrally. Further, the gears 152 and 153 are for transmitting the rotation of the gear 151 to the gear 154, and the rotation shafts 132 and 133 thereof are inside the bearing cases 112a and 112b and the bearing cases 113a and 11a, respectively.
Existing within 3b.

Each of the above gears 151, 152, 153, 1
To explain the details of a typical gear 151 in 54, referring to FIG. 9, a bottom plate 101 and a side plate 102 are provided with an inner bottom plate 103, and a jacket plate 106 is attached to the outside thereof. Gear box 10 provided with an upper lid 104
No. 0 side wall 102a, bearing case 111a, side wall 102b
Is provided with a bearing case 111b, and the ball bearings 121a and 121b are housed in each. The rotary shaft 131 is fixed to the inner rings of the ball bearings 121a and 121b.
The 1b side has the same configuration.

That is, the ball bearings 121a, 121b
Of the bearing case 11 by attaching the bearing covers 113a and 113b to the bearing rings 112a and 112b for fixing the outer ring of the
1a and 111b, and bearing cases 111a and 111b
Fine U-nuts 165a, 165
The ball bearings 121a and 121b are pressed together with the bearing covers 113a and 113b by screwing b, and seal rings 166a and 166b are fitted between the bearing covers 113a and 113b and the rotary shaft 131.

The gear 151 is inserted into the rotary shaft 131 together with the rotation preventing key, and is received by the step 131a of the rotary shaft 131.
The washer 161 and the bearing nut 162 are tightened and fixed. A collar 164 is fitted on the outside of the bearing nut 162 to receive the ball bearing 121a, and the step 131b of the rotary shaft 131 receives the ball bearing 121b. As described above, both ends of the rotary shaft 131 are unbalanced by the coupling 44 and the unbalanced weight 41a,
41b is connected to the rotary shaft 43, and the other is the coupling 4
Unbalance weights 41a ', 41 by 4'
It is connected to the rotating shaft 43 'of b'.

For the oil, refer to FIGS.
4 to the gears 151, 1 from the breather cap 171
Gearbox 1 accommodating 52, 153, 154
It is replenished to the space in 00, that is, the oil sump 172,
The bearing cover 113 is provided around the gear 151 in FIG.
It is circulated in the internal spaces 173a, 173b of the a, 113b and the ball bearings 121a, 121b, but this is the same in the other gears 152, 153, 154. The oil level in the oil sump 172 is the side wall 10
It is monitored by the liquid level gauge 174 provided in FIG. 2, and when the oil is changed, it is extracted from the oil drain plug 175 near the bottom surface shown in FIG.

7-9, the cooling water is supplied from the water supply nozzle 181 near the bottom surface to the cooling water jacket 182, and the drainage nozzle 18 provided near the upper lid 104 on the opposite side.
Drained from 6. Gearbox 100 if necessary
The space 185 between the bottom plate 101 and the middle bottom plate 103 may be used as a passage for cooling water.

The same applies to the vibrator 26 of the second shakeout machine 20.

Shake-out machine 1 according to an embodiment of the present invention
Is configured as described above, and its operation will be described below.

1 to 4 and 5, in the shaker 16 of the first shakeout machine 10, the rotating shaft 43 and the rotating shaft 1 are integrally driven by the electric motor 47 to drive the belt.
31, the rotating shaft 43 'is rotated, and the gear box 100
The unbalanced weights 41a, 41b, 41a 'are rotated by rotating the integral rotary shaft 93, rotary shaft 134, and rotary shaft 93' in opposite directions via the internal gears 151, 152, 153, 154. , 41b 'and the unbalanced weights 42a, 42b, 42a', 42b 'are rotated in opposite directions, and the centrifugal forces generated in each are combined to linearly vibrate the first vibrating trough 11 in the direction indicated by the arrow p. It At the upstream end of the first vibrating trough 11 that is linearly vibrating, the high temperature casting E after casting and the sprue G of a long object are charged with mold sand attached. The high temperature casting E and the sprue G are transferred to the downstream side on the transfer surface 12 while generating strong hot air. During the transfer, the mold sand adhering to the surface is shaken off by vibration, and is also dropped by the contact between the casting E and the sprue G.

The dropped mold sand is sieved downward through an opening 15 provided on one surface of the transfer surface 12, collected in a tray (not shown), and discharged. During this time, the high temperature casting E,
The hot air rising from the sprue G strongly heats the vibrator 16 located immediately above the transfer surface 12. However, as shown in FIGS. 1 to 4 as a whole and locally in FIGS. 5 and 6, the cooling water in the water supply pipe 191 is the water supply nozzle 1 of the gear box 100.
81 is supplied into the gear box 100 from FIG.
After cooling the oil in the internal space of the gear box 100, that is, the oil sump 172 and the bearing covers 113a and 113b through the cooling water jacket 182 between the side plate 102 and the jacket plate 106 shown in FIG. Since the oil used in the gearbox 100 does not rise in temperature and does not deteriorate the lubricating function, it is discharged from the drainage nozzle 186 shown in FIG.

The casting E and the sprue G from which the mold sand has been dropped by the first shakeout machine 10 are arranged from the downstream end of the first vibration trough 11 to the second vibration trough 2 of the second shakeout machine 20.
1 is supplied to the upstream end. The second shakeout machine 20 is also linearly vibrated by the vibrating machine 26, and most of the supplied casting E and gate G fell to the slope table 25 and the slope 2
The second vibration trough 22 by sliding down 5a, 25b.
It is spread to the full width and transferred to the downstream side. Even at this time, the temperatures of the casting E and the sprue G are still high, and the vibrator 26 located immediately above the transfer surface 22 is strongly heated by the rising hot air. However, since the gear box 100 of the shaker 26 is also water-cooled like the gear box 100 of the shaker 16 of the first shakeout machine 10, the oil used is not heated and its temperature does not rise. .

The casting E from which the mold sand has been dropped and the sprue G are the second
The casting E is transferred to the vibrating trough 22, falls through the openings 27 and 28 provided at the end portion on the downstream side, and is discharged from the discharging chute 29 below.
Is discharged from the downstream side to the gate 81.

(Second Embodiment) In the first embodiment, the gearbox 1 provided at an intermediate position between the bearing cases 53, 54 on the blade 33 side and the bearing cases 53 ', 54' on the blade 34 side.
Although only 00 is water-cooled, the bearing cases 53, 54, 53 ', 54' of the unbalanced weights are similarly heated by the high temperature casting E and the sprue G transferred on the transfer surface 12 of the vibration trough 11. . Therefore, the bearing cases 53, 5
It is preferable that 4, 53 'and 54' are water-cooled at the same time.

FIG. 10 is a plan view of the shakeout machine 2 of the second embodiment in which the bearing case of the unbalanced weight is water-cooled together with the gearbox of the vibrator, and FIG. 11 is shown in FIG.
11 is a side view taken along line [11]-[11] in FIG. 10 and 11 are respectively FIGS. 1 and 3 in the first embodiment.
However, the shaker 16 ', 2 having a cooling system different from that of the shaker 16, 26 of the shakeout machine 1 of the first embodiment.
Since the components other than 6'are configured in the same manner, the same components are designated by the same reference numerals and the description thereof will be omitted. Further, the vibration exciter 16 'and the vibration exciter 26' are configured in the same manner. Because
Hereinafter, the shaker 16 ′ of the first shakeout machine 10 ′ will be described.

FIG. 12 is a plan view of the vibration exciter 16 ', and FIG. 13 is a sectional view taken along line [13]-[13] in FIG. Referring to FIGS. 12 and 13, the bearing case 53 and the bearing case 54 in the first embodiment are housed in the bearing box 50 and water-cooled, and the bearing case 53 ′ and the bearing case 54 ′ are placed in the bearing box 50 ′. It is housed and water cooled. Other gearbox 100, electric motor 47
The drive system including is constructed exactly as in the case of the first embodiment. Then, the cooling water from the cooling water supply pipe 191 ′ is distributed to the water supply nozzle 78 of the bearing box 50, the water supply nozzle 181 of the gear box 100, and the water supply nozzle 78 ′ of the bearing box 50 ′, and the drainage nozzle 79 of the bearing box 50. The cooling water discharged from the discharge nozzle 186 of the gear box 100 and the drain nozzle 79 'of the bearing box 50' is collected in the drain pipe 192 'and discharged.

Since the bearing box 50 and the bearing box 50 ′ added in the second embodiment have the same structure, the bearing box 50 will be described in detail. FIG. 14 is a partially cutaway side view of the bearing box 50. 15 is a sectional view taken along the line [15]-[15] in FIG. In the bearing box 50, side plates 72a and 72b are erected on a bottom plate 71 fixed on the two beam members 35 passed between the blades 33 and 34, and a curved plate 73 provided between the bottom box 71 and the ceiling plate serves as a ceiling surface. The front and rear surfaces are formed so as to be covered, and bearing cases 53 and 54 are provided so as to be inserted between the side surface plates 72a and 72b.

The bearing case 53 has a roller bearing 51 that supports the rotating shaft 43 of the unbalanced weights 41a and 41b.
a and 51b are accommodated, and similarly, the bearing 54 accommodates a roller bearing that pivotally supports the rotating shaft 93 of the unbalanced weights 42a and 42b. Therefore, hereinafter, description will be made mainly with reference to FIG. 15 showing a cross section of the bearing case 53.

The bearing case 53 is a double case including an outer case 53a and an inner case 53b.
The roller bearings 51a and 51b are provided inside the distance piece 55.
The stepped rotary shafts 43 of the unbalanced weights 41a and 41b are fixed to the inner rings of the roller bearings 51a and 51b, respectively. And roller bearing 51
Bearing covers 56a and 56b on the outside of a and 51b, respectively.
And collars 57a and 57b. Seal rings 69a and 69b are fitted between the bearing covers 56a and 56b and the collars 57a and 57b.

Further, on both sides of the bearing box 50, the unbalanced weights 41a and 41b are inserted into the stepped rotary shaft 43 in contact with the collars 57a and 57b together with the detent keys, and washers 58 are provided on the outer sides of the unbalanced weights.
It is fixed by bearing nuts 59a and 59b via a and 58b. Further, as described above, the driving pulley 45 is attached to the outside of the unbalanced weight 41a, and the outside of the unbalanced weight 41b is coupled by the coupling 44 to the gear box 10 to be described later.
It is connected to the rotary shaft 131 at 0.

In the bearing box 50 as described above,
A grease reservoir 62 is formed between the outer case 53a and the inner case 53b of the bearing case 53, and grease is injected from the grease inlet 61 at the top, and the inside and outside of the roller bearings 51a and 51b are sealed by the seal rings 69a and 69b. Of the inner case 53 below the grease filling points 63a and 63b
b and the distance piece 55 are communicated with each other by a passage 64, and grease removing plugs 65a and 65b are provided at the bottom of the grease reservoir 62.

Further, the side plate 72a of the bearing box 50,
Between 72b, a portion surrounded by the bottom plate 71 and the curved plate 73 is a water reservoir 74, and jacket covers 75a, 75 which are liquid-tightly attached to the outside of the bearing covers 56a, 56b.
An annular cooling water jacket 76 formed by b
The a and 76b are connected to the water reservoir 74 by upper and lower copper water pipes 77a and 77b. Referring also to FIG. 12, the cooling water is supplied to the water supply nozzle 7 on the bottom surface side of the bearing box 50.
Water is supplied from 8 to the water reservoir 74, and enters the cooling water jackets 76a and 77b from the water reservoir 74 via the lower water pipes 77a and 77b, and the upper water pipes 77a and 77b.
Through the drainage nozzle 79 provided on the ceiling surface 73 of the water reservoir 74. That is, the water reservoir 74 that cools the outer peripheral surfaces of the bearing cases 53 and 54 and the cooling water jackets 76a and 76b that cools the side surfaces cool the grease that lubricates the roller bearings 51a and 51b. This also applies to the shaker 26 'of the second shakeout machine 20'.

Therefore, the shakeout machine 2 of the second embodiment
When the mold sand is removed by the shaker 16 ′ of the first shakeout machine 10 ′, as shown in FIGS.
3, the cooling water is distributed from the water supply pipe 191 ′ to supply water to the water supply nozzle 78 of the bearing box 50 and the gear box 10.
No. 0 is supplied to the water supply nozzle 181 and the water supply nozzle 78 'of the bearing box 50' to cool the bearing box 50, the gear box 100, and the bearing box 50 '. In the bearing box 50, the cooling water supplied from the water absorption nozzle 78 enters the water reservoir 74, passes through the cooling water jackets 76a and 76b from the lower water pipes 77a and 77b, and passes through the water reservoir 74 from the upper water pipes 77a and 77b. By passing through, the grease reservoir 62 between the inner case 53b and the outer case 53a and the inside of the bearing covers 56a and 56b are cooled, and then drained from the drain nozzle 79 shown in FIG.

The same applies to the bearing box 50 ', and the cooling of the gear box 100 is the same as in the first embodiment. The drainage nozzle 79 of the bearing box 50, the drainage nozzle 186 of the gear box 100, the bearing box 5
Drainage from the 0'drainage nozzle 79 'is drainage pipe 192'.
Are collected and drained.

Therefore, the shakeout machine 2 of the second embodiment
In the first shakeout machine 10 ′ of No. 1, the gear box 100 is provided between the blades 33, 34 of the vibration trough 11 ′,
That is, since it is installed between the bearing box 50 and the bearing box 50 'with good weight balance, uneven vibration does not occur, and the bearing cases 53, 54, 53' of the rotating shaft of the gear box 100 and the unbalanced weight are not generated. ,
Since 54 'is housed in the bearing boxes 50, 50' and is water-cooled, it is possible to avoid lubrication trouble and seizure due to heating and temperature rise.

Although the respective embodiments of the present invention have been described above, needless to say, the present invention is not limited to these, and various modifications can be made based on the technical idea of the present invention.

For example, in the shake-out machine 1 of the first and second embodiments, the second shake-out machine 20 was connected to the downstream side of the first shake-out machine 10. This connection is the throughput of the casting E, It depends on the processing speed, and it is not always necessary to connect a shakeout machine.

In the second embodiment, grease is used to lubricate the bearing boxes 50 and 50 ', but the unbalanced weights 41a, 41b, 41a' and 41 are used.
When b'and 42a, 42b, 42a '42b' are rotated at a high speed, it is necessary to use oil, and oil is used for lubrication in the gear box 100, but the gears 151, 152, 153 are not used. Grease may be used when rotating 154 at a low speed.

In the first and second embodiments,
For example, one half-moon weight was used as the unbalanced weight 41a, but two half-moon weights were attached at a predetermined angle (adjustable), and the resultant centrifugal force was unbalanced weight 41a. It can be replaced with an Ambaran weight that has the same direction. The exciting force can be adjusted by adjusting the relative mounting angles of these unbalanced weights.

Further, in the first and second embodiments, the gearboxes 100, 1 having the same number of teeth are provided in the gearbox 100.
Although 52, 153 and 154 are used, the unbalanced weights 41a, 41b, 41a 'and 41b' and the unbalanced weights 42a, 42b, 42a 'and 42b' can be rotated in the opposite directions in synchronization. In that case, the number of gears need not be four, and may be two, for example. Further, the number of teeth of the gears 152 and 153 does not have to be the same, but it is simple if they are the same.

【The invention's effect】

As described above, according to the shake-out machine of the present invention, since the gear box is installed in a central portion between both side walls of the vibration trough with good weight balance, non-uniform vibration is not generated and the gear is Since the box is water cooled,
The temperature of the gearbox does not rise even if it is heated by high temperature castings or hot air from the sprue, so that no lubrication trouble occurs.

[Brief description of drawings]

FIG. 1 is a plan view of a shakeout machine according to a first embodiment.

FIG. 2 is a side view taken along line [2]-[2] in FIG.

3 is a side view taken along line [3]-[3] in FIG.

FIG. 4 is a front view taken along line [4]-[4] in FIG.

FIG. 5 is an enlarged plan view of the vibration exciter.

6 is a cross-sectional view taken along line [6]-[6] in FIG.

FIG. 7 is a partially cutaway side view of the gear box.

FIG. 8 is a partially cutaway plan view of the gear box.

9 is a cross-sectional view taken along the line [9]-[9] in FIG.

FIG. 10 is a plan view of a shakeout machine according to a second embodiment.

11 is a side view taken along line [11]-[11] in FIG.

FIG. 12 is a plan view of a vibration exciter according to a second embodiment.

13 is a cross-sectional view taken along the line [13]-[13] in FIG.

FIG. 14 is a partially cutaway side view of the bearing box.

15 is a sectional view taken along the line [15]-[15] in FIG.

FIG. 16 is a plan view of a conventional shakeout machine.

17 is a side view taken along line [17]-[17] in FIG.

FIG. 18 is a plan view of a vibration exciter in a conventional shakeout machine.

19 is a sectional view taken along the line [19]-[19] in FIG.

[Explanation of symbols]

 1 Shakeout Machine of First Embodiment 2 Shakeout Machine of Second Embodiment 10 First Shakeout Machine 11 Vibratory Trough 12 Transfer Surface 15 Opening 16 Exciter 20 Second Shakeout Machine 21 Vibratory Trough 26 Exciter 27 Opening 28 Opening 41 Unbalanced weight 42 Unbalanced weight 43 Rotating shaft 47 Electric motor 50 Bearing box 50 'Bearing box 51 Roller bearing 53 Bearing case 54 Bearing case 56 Bearing cover 62 Grease reservoir 71 Bottom plate 72 Side plate 73 Curved plate 74 Water Reservoir 75 Jacket cover 76 Cooling water jacket 77 Water pipe 93 Rotating shaft 100 Gear box 101 Bottom plate 102 Side plate 106 Jacket plate 111 Bearing case 113 Bearing cover 121 Ball bearing 131 Rotating shaft 134 Rotating shaft 151 Gear 152 Gear 153 Gear 154 Gear

Claims (3)

[Claims] 1. A vibrating trough for transferring high temperature casting by vibration to drop the molding sand, and a pair of vibrating troughs fixed on both side walls of the vibrating trough for vibrating the vibrating trough. A first unbalance weight attached at a predetermined angle to a first rotating shaft supported by a bearing, and configured in the same manner as the first unbalance weight and rotating in a direction opposite to the first rotating shaft. A second unbalance weight attached to the second rotating shaft at an angle having the same phase as the first unbalance weight with respect to the rotating direction, and the first rotating shaft and the second rotating shaft in opposite directions. The first rotating shaft and the second rotating shaft for rotating
In a shake-out machine consisting of a gear box for accommodating gears attached to and meshing with each of the rotating shafts, the gear box is provided at a central portion between both side walls of the vibration trough, A shakeout machine characterized in that a cooling water jacket is provided on at least one of a bottom surface portion and a side surface portion, and water is passed through the cooling water jacket to cool the gear box. 2. The two shakeout machines are combined as a first shakeout machine and a second shakeout machine connected to a downstream end of the first shakeout machine, and the first shakeout machine removes mold sand from a casting. The shakeout machine according to claim 1, wherein the second shakeout machine is used for separating a casting and a sprue entrained in the casting. 3. The unbalance of the shakeout machine
The shakeout machine according to claim 1 or 2, wherein an electric motor for driving the vibration exciter using a weight is controlled by a variable frequency inverter.