JP3261000B2 - Core coating machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core coating apparatus, and more particularly to a core coating apparatus used for a cylinder block casting mold of an automobile engine, which is suitable for a variety of medium-volume production.

[0002]

2. Description of the Related Art For example, when a cylinder block of an automobile engine is manufactured by a mold, a core constituted by a plurality of core parts is used. Conventionally, when coating the core, before assembling the core parts, each core part is placed on a pallet one by one in front of the painting booth, and an operator sprays the coating liquid with a spray gun. I was doing the coating of the soup core.

[0003]

However, when the above-mentioned conventional technology is used, the work area where the worker works is contaminated, the work environment is poor, and the working conditions are severe. Further, since the coating liquid is sprayed over almost the entire surface of the core component, the coating is performed even on a portion that does not become the surface of the core after assembly, resulting in much waste. Also,
Since the lower surface of the core component needs to be painted in reverse, the work is not easy. On the other hand, it is conceivable to coat the core after assembling the core parts. However, in this case, it is difficult to reliably apply the coating liquid over the entire surface because the shape of the core is complicated, and the weight of the core is large. Some cores may be damaged. Therefore, the application of the core after assembling the core component has such various problems in practice.

Accordingly, the present invention has been made to solve the above-mentioned problems of the prior art, and when the core is applied after the core parts are assembled, the coating is effectively performed on the entire surface. It is an object of the present invention to provide a core coating apparatus capable of performing the above-mentioned operations.

[0005]

In order to achieve the above object, a core coating apparatus of the present invention comprises a first holding means for holding a core assembled from predetermined core parts;
Reversing means for reversing the core held by the first holding means; second holding means for holding the inverted core from above and releasing the holding by the first holding means; And a transporting means for transporting the core held in an inverted state by the second holding means to the position of the coating tank, lowering the core, and immersing the core in the coating tank. Swinging means for swinging the core coated in the coating tank above the coating tank.

In the present invention configured as described above,
First, a core assembled from predetermined core parts is clamped by the first clamping means, and the core is inverted by the reversing means. The second holding means holds the inverted core from above and releases the holding by the first holding means. Next, the conveying means conveys the core to the position of the coating tank and immerses the core in the coating tank. After this, the swing means
The core coated in the coating tank is swung above the coating tank.

In the present invention, the first holding means is a pair of holding cylinders for holding the core from both end faces, and the reversing means engages with a pinion gear attached to the holding cylinder. It is preferable that the rack cylinder portion be provided with a rack to be provided and arranged so as to be orthogonal to the holding cylinder. In the present invention, the second holding means is preferably a manipulator device for holding the lower end of the core. Further, in the present invention, it is preferable that the transporting means includes a bogie that transports the core by traveling on the traveling rail, and an upper and lower cylinder that moves the core in the vertical direction.

[0008]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an overall block diagram showing a method of manufacturing a core of a cylinder block mold to which the core coating / transporting device of the present invention is applied, and FIGS. 2 and 3 are diagrams to which the core coating / transporting device of the present invention is applied. 1 is an overall plan view of a cylinder block mold core manufacturing apparatus. First, before describing an embodiment of the core coating / conveying apparatus of the present invention, an outline of a method and an apparatus for manufacturing a cylinder block mold core to which the present invention is applied will be described with reference to FIGS. .

As shown in FIGS. 1 to 3, a method of manufacturing a cylinder block mold core is as follows.
Step A of molding a first core (including a rear end core, a crank core, and a front end core) which is a main component of a mold core of a cylinder block for an engine; Step B of performing predetermined processing such as take-out weight measurement and deburring using the first robot 2 and Step C of performing first transport for placing the first core on the A pallet
A step D of coating the first core with the first coating device 4 (the first coating device 4 is an embodiment of the core coating / transporting device of the present invention); Step E of performing the second transport of the core
And a second core (a right pillow core, a right push rod core, a left pillow core, a left push rod core, a right side middle) which is another part of the mold core of the cylinder block by the second molding machine 6. Step F) of forming the second core (including the core and the left side core), and performing predetermined processing such as weight measurement and deburring using the 21st robot 8 on the formed second core, and the 22nd robot 10 A step G of performing a mold coating of the second core by using the first core and a step H of performing a third conveyance of the second core that has been molded; Drying and cooling in drying room 1
2 and the cooling chamber 14 and the third robot 16
A step J of partially assembling the dried and cooled second core and assembling the partially assembled second core with the dried and cooled first core to form a total assembled core of the cores;
A step K of inspecting the total assembly core using the fourth robot 18 and a step L of performing a fourth transportation of transporting the inspected total assembly core to the cylinder block casting line are included. .

The first coating apparatus 4 in the above step D is an embodiment of the core coating apparatus of the present invention. Therefore, the contents of the steps A to D among the above steps will be described below.
FIG. 4 is a plan view showing an outline of the process A and a first molding machine used in the process A. Step A is a step of molding a first core (including a rear-end core, a crank core, and a front-end core), which is a main component of a mold core of a cylinder block for a V8 engine, using a first molding machine. It is.

As shown in FIG. 4, the first molding machine 1 comprises:
It is configured as follows. The first drive conveyor 22 and the second drive conveyor 24 are arranged substantially in parallel, and the entrance side 26 of the first drive conveyor 22 and the second drive conveyor 2
A first feeder 30 is provided between the first feeder 30 and the outlet side 28 of the fourth carriage 4 so that the first carriage 32 can move between them. On the other hand, a second feeder 38 is provided between the outlet side 34 of the first drive conveyor 22 and the inlet side 36 of the second drive conveyor 24, and the second carriage 40 causes the second carriage 40 to move between them. It can be moved. This first drive conveyor 22
Core molding is performed as described above, and the first drive conveyor 22 is closed to the outside by the first molding machine room 44 except for the inlet side 26, the outlet side 34, and the core outlet 42. So that the surrounding environment is not adversely affected.

The first molding machine 1 configured as described above operates as follows. That is, the core molding die 46 mounted on the first carriage 32 waiting at the entrance side 26 of the first drive conveyor 22 moves onto the first drive conveyor 22 and moves rightward in the figure. At this time, in the first station 48, mixed sand blowing and gassing are performed, and the molding is completed. At the next second station 50,
The core molding die 46 is divided, and then the die is removed.
Further, in the second station 50, the core forming mold 46 from which the core is removed and the core is removed is provided, and thereafter, the provided core forming mold 46 is engaged and locked again to be integrally formed. Become.

The integrated core forming mold 46 is mounted on the second carriage 4 waiting at the exit side of the first drive conveyor 22.
Transfer to 0. Thereafter, the second carriage 40 reaches the entrance side 36 of the second drive conveyor 24 by the second feeder 38. Thereafter, the core molding die 46 moves onto the second drive conveyor 24, moves to the left in the figure by the second drive conveyor 24, and reaches the outlet side 28. Here, the core molding die 46 transfers to the waiting first bogie 32, and
An inlet side 26 of the first drive conveyor 22 is fed by the feeder 30.
To reach.

As described above, the core molding die transfer loop is formed, the core molding die is collected, and each step is repeated. Therefore, each step is successively performed one by one without leaving each step blank. The core is sent and the core is formed. As shown in FIG. 5, in the core molding die, the first is the rear end core 62, the second to fifth are the crank cores 64, and the sixth is the front end core 66.

FIG. 6 is a plan view showing the process B and the operation of the first robot used in the process B. The step B is a step for taking out the first core component formed in the step A using the first robot 2 and performing predetermined processing such as weight measurement and deburring. As shown in FIG. 6, each core component 70 of the first core that has been separated and removed in the core forming mold dividing step in the first molding machine room 44 is the first core component 70.
The robot 2 is gripped by the gripper 72 (step 1).
This first robot is set within a predetermined radius by teaching.
Work in dimensional space. The side where the core component 70 is gripped is referred to as an A side, and the back side is referred to as a B side. Next, the first robot 2 moves the core component 70 to the fixedly arranged core weight measuring frame 74, and places the core component 70 on the core weight measuring frame 74,
The weight of the core component 70 is measured by the core weight measurement stand 74 (step 2). While the weight of the core component 70 is being measured, the first robot moves the gripping portion to the surface B side, and then grips the core component 70 from the surface B side (step 3).

Next, the first robot 2 moves the core component 70, for which the weight measurement has been completed, to the cleaning brush 76, which is fixedly arranged and rotates around a cylindrical vertical axis, and the A surface is moved to the cleaning brush 76. Then, the surface A is cleaned by the cleaning brush 76 (step 4). Thereby, the core component 70
On the side A, the adhesive effect of the adhesive is improved. Here, in the case of a core component for which only the A surface needs to be cleaned, such as the crank core 64, the process proceeds to step 6 described later. However, in the case of a core component that needs to clean both the A surface and the B surface, such as the rear end core 62 and the front end core 66, the first robot 2 thereafter sets the core component 70 Is returned to the core weight measurement stand 74 (Step 3), and the gripping part is moved to the A side (Step 2). next,
The first robot 2 moves the core 70 similarly to the cleaning brush 78 that is fixedly arranged and rotates about the cylindrical vertical axis, and brings the surface B into contact with the cleaning brush 78, and the surface B contacts the cleaning brush 78. It is cleaned by 78 (step 5).

Next, after step 4, the first robot 2
The core component 70 is deburred while holding the surface B.
The core 70 is deburred from the A side by the deburring device 80 (step 6). The deburring device 80 is provided with a protruding and rotating deburring tool on one surface, and is fixedly arranged. The first robot 2 moves the deburring portion of the core, so that the core component is moved from the A side. Deburring of the peripheral surface of 70 is performed. here,
When the process proceeds to the step 6 after the step 5, the peripheral surface of the core component 70 is deburred from the B side.

Thereafter, the first robot 2 moves the core component 70 to the adhesive application device 82 while holding the surface B, and the adhesive is applied to the surface A by the adhesive application device 82 ( Step 7). Here, when the process proceeds to the step 7 via the step 6 after the step 5, an adhesive is applied to the B side. Next, the first robot 2 moves the core component 70 to the core assembling trolley 84 while holding the surface B, and the surface A (or the surface B) which is the adhesive application surface in the core assembling trolley 84.
The adhesive assembly is performed with the side facing up (step 8). Thereafter, the first robot returns to the initial predetermined position (the position of step 1), and repeats the same steps for the next core. In this manner, weight measurement, cleaning, deburring, adhesive application, and adhesive assembly are sequentially performed in the order of the rear end core 62, the crank core 64, and the front end core 66.

FIG. 7 is an explanatory view specifically showing a step (step 8) of bonding and assembling using the core assembling cart shown in FIG.
As shown in FIG. 7, the core assembling cart 84 includes a cart 86 and a core assembling jig 88. This core assembly jig 8
8 has a backrest portion 90 and a pressing portion 92. further,
The core assembling carriage 84 has a core 62, 64, which is assembled by sequentially stacking a tilt actuator 94 for tilting and raising a core assembling jig 88 whose front end is pivotally supported.
A pressing actuator 96 for driving a pressing portion 92 for pressing the pressing member 66 is provided. The core assembly cart 84 is provided with a core assembly cart cylinder 98 for moving the core assembly cart 84 connected thereto.

FIG. 7A, FIG. 7B, FIG. 7C and FIG. 7D show the adhesive assembly by the core assembly cart 84 constructed as described above.
Are performed in the following order. First, FIG.
As shown in (A), the core assembling cart 84 is moved to a predetermined position for performing the adhesive assembly by operating the core assembling cart cylinder 98. Next, as shown in FIG. 7B, at this predetermined position, the core assembly jig 88 is tilted up by the tilt actuator 94, and in this state, the surface A, which is the adhesive applied surface, is raised. And the cores 62, 64, 66 are sequentially stacked. Next, as shown in FIG. 7 (C), the pressing portion 92 is driven by the pressing actuator 96, and the cores 62, 64, 66 that are sequentially stacked are bonded and assembled. Thereafter, as shown in FIG.
In step 4, the core assembly jig 88 is lowered to complete the bonding assembly process.

As described above, in this step B, the first robot 2 holds the core in all of the steps 1 to 8 and fixedly disposes each device such as the deburring device 80 to perform deburring. Of each work. Thus, the first robot 2 does not need to handle a tool, and only one type of robot hand is required to compose the gripping portion. Therefore, there is no need to change the hand.
There is an effect that there is no need to perform complicated operations. Also,
At the time of bonding and assembling, the core assembly jig 88 is tilted and raised by the tilting actuator 94, and in this state, each core component 62, 64, 66 with the surface A which is the adhesive applied surface facing upward.
Are sequentially stacked, so that the core can be bonded and assembled without causing the first robot 2 to perform complicated operations.

FIG. 8 is a plan view for explaining the first transport in the step C. Step C is a step for placing the first core assembled and bonded in step B on the A pallet. As shown in FIG. 8, the core assembling cart 84 is stopped at the assembling station 100 corresponding to the above-described predetermined position where the adhesive assembly in the process B is performed. A first transfer station 102 is located adjacent to and below the assembly station 100 in the drawing, and the first transfer station 102 is provided with a first pushing cylinder 104. Above the first transfer station 102, a traveling rail 106 extending leftward in the figure in the X direction is disposed, and a manipulator 108 traveling on the traveling rail 106 is mounted on the traveling rail 106.

On the other hand, a free roller conveyor 110 and a driving roller conveyor 111 are provided adjacent to the first transfer station 102 and on the right side in the X direction in the figure.
The free roller conveyor 110 has a length on which only two A pallets 112 and two B pallets 114 are alternately mounted. Here, the first core constituted by the rear end core 62, the crank core 64, and the front end core 66 described above is placed on the A pallet 112. On the other hand, the B pallet 114 has a process F, which will be described later,
After the lapse of G, in step H, the above-described second core is placed. The drive roller conveyor 111 is provided in the same direction adjacent to the right end of the free roller conveyor 110.

Further, a free roller conveyor 116 is arranged in parallel with the free roller conveyor 110 and the driving roller conveyor 111. At the left end of the free roller conveyor 116 in FIG.
18 are located. A pallet truck rail 120 and a feeder chain 122 are provided between the take-out station 118 and the first transfer station 102. In addition, a first pallet truck 124 that runs on the pallet truck rail 120 with the A pallet 112 and the B pallet 114 placed thereon is arranged. Here, a locking hook 126 is attached to the feeder chain 122,
The pallet truck 124 is locked to the feeder chain 122 by the locking hook 126. Thus, the first pallet truck 124 is connected to the feeder chain 12
By the drive of No. 2, it moves between the removal station 118 and the first transfer station 102.

The operation of the first transport configured as described above will be described below. First, the core assembling cart 84 in which the first core has been bonded and assembled in the process B is stopped at the assembly station 100. Thereafter, the core assembling carriage 84 is moved to the position of the first transfer station 102 by moving the core assembling carriage cylinder 98 forward. Next, the manipulator 108 is connected to the first transfer station 102.
, And the first core on the core assembling bogie cylinder 98 is held and lifted by the manipulator 108,
The first core that has been bonded and assembled is placed on the A pallet 112 on the free roller conveyor 110. afterwards,
The manipulator 108 returns to the original position in the left direction in the figure.
Next, the empty core assembly cart 84 returns to the position of the assembly station 100 by retracting the core assembly cart cylinder 98.

Next, when the core assembling cart cylinder 98 returns to the position of the assembling station 100, the pallet cart 1
24 is stopped at the removal station 118, and as will be described later, the second core is removed from the mold and emptied.
The pallet 114 is mounted. When the feeder chain 122 is operated, the first pallet truck 124 is moved from the unloading station 118 to the first transfer station 102.
Go to At the first transfer station 102, the empty B pallet 114 on the first pallet truck 124 is pushed onto the free roller roller conveyor 110 by the first pushing cylinder 104 by a distance corresponding to one pallet. At this time, the free roller roller conveyor 110
A pallet 112 located in front of is also moved rightward in the figure by one pallet at the same time, and reaches the coating inlet of the first coating apparatus. Here, the A pallets 112 and the B pallets 114 which are adjacent to each other are arranged alternately so as to correspond to the core of one cylinder block.

Next, referring to FIG. 9 and FIG.
And an embodiment of the core coating and conveying apparatus of the present invention will be described. FIG. 9 is a front view showing a first coating apparatus which is one embodiment of the core coating apparatus of the present invention, and FIG.
FIG. 10 is a side view of the first coating apparatus shown in FIG. 9. Step D
Is a step for coating the first core bonded and assembled in step B. Here, FIG. 9 is a front view as viewed from the Y direction in FIGS. 2 and 3, and FIG.
FIG. 3 is a side view as viewed from the X direction.

As shown in FIGS. 9 and 10, the first coating apparatus 4 has a coating station 130, and the entrance 132 of the coating station 130 faces the free roller conveyor 110 in the above-mentioned step C. It is provided to be. At the position of the entrance 132, the free roller conveyor 110 has a divided structure of a length corresponding to one pallet, and a lifter 134 is provided in this portion.
10 descends downward. In addition, the first coating apparatus 4 is provided with a holding and rotating device 138 that can hold and rotate (invert) the first core 136 bonded and assembled at its end face. The holding and rotating device 138 includes a right holding cylinder portion 200 and a left holding cylinder portion 202 for holding the first core 136 from both end surfaces, and the first core 136 is integrally incorporated into the left holding cylinder portion 202. It consists of a rack cylinder part 204 to be turned over.

Hereinafter, the pinching / rotating device 138 will be described in detail with reference to FIGS. FIG. 11 is a perspective view schematically showing the holding and rotating device 138. As shown in FIG. 11, the left holding cylinder portion 202 of the holding and rotating device 138 is provided.
A left holding cylinder 208 fixedly arranged at a predetermined position by a bracket 206, a rotating shaft 210 connected to a rod of the left holding cylinder 208 and movable in an axial direction which is the Y direction, It comprises a holding member 212 attached to the distal end and holding the end face of the first core 136, and a pinion gear 214 attached to the rotation shaft. On the other hand, the rack cylinder portion 204 of the holding and rotating device 138 includes a rack cylinder 216 arranged orthogonal to the left holding cylinder 208 and the rack cylinder 2.
16 and a rack 218 that is movable in the X direction. Here, the rack 218 is engaged with the pinion gear 214, and the rack 218 is moved in the X direction by the rack cylinder 216. As a result, the rack 218 is moved.
The pinion gear 214 that is engaged with the first core 136 rotates, and finally the holding member 212 rotates and is held by the first core 136.
Is inverted. The rack 218 and the pinion gear 21
4 so that the rack cylinder 204 is always engaged.
Y so that it can follow the movement of the pinion gear 214 in the Y direction.
It is supported so that it can move in the direction.

FIG. 12 is a plan view showing the left holding cylinder 202 and the rack cylinder 204, and FIG. 13 is a sectional view taken along line 13-13 in FIG. These figures 1
As shown in FIGS. 2 and 13, a shaft cylinder 220 is attached to the rotating shaft 210 of the left holding cylinder portion 202, and a pair of guide rails 224 are attached to both sides of the shaft cylinder 220 via support members 222. ing. These guide rails 224 are connected to the upper guide rollers 22 arranged vertically.
6 and the lower guide roller 228 so as to be sandwiched therebetween, and further supported by the side guide roller 230 from the side. These upper guide roller 226, lower guide roller 228, and side guide roller 230
It is supported and fixed by a roller bracket 232. Since the holding and rotating device 138 is configured as described above, the entire device can be made compact.

On the other hand, as shown in FIGS. 9 and 10 again,
A manipulator 140 is provided above the holding and rotating device 138. The manipulator 140 has a pair of holding cylinders 142 for holding the lower end of the inverted first core 136, a swing cylinder 144 for tilting and swinging the held first core 136, and a holding cylinder 144. 1st core 1
And a guide bar 147 for guiding the vertical movement of the vertical cylinder 146.
And a manipulator cart 148. Here, the holding cylinder 142 is provided with a floating mechanism (not shown) at a portion where the first core 136 is held, so that an excessive force is not applied to the held first core 136.

Above the first coating apparatus 4, a traveling rail 150, a drive chain 152 extending along the traveling rail 150, and a predetermined tension applied to the drive chain 152 via a sprocket 154 at the rear end. Chain tension spring device 156 for pulling, electric motor 1 with a reduction gear disposed at the front end of drive chain 152 for driving drive chain 152
58 are provided respectively. Further, the first coating device 4
The stirring tank 1 provided with the coating tank 160 and the stirrer 162
64 are provided.

Next, the first coating apparatus 4 constructed as described above.
Will be described. When the A pallet 112 on which the first core 136 is mounted reaches the entrance 132 of the coating station 130, the right holding cylinder 20 of the holding and rotating device 138 is moved.
0 and the left holding cylinder 202 are activated to operate the first core 13
Hold 6 Thereafter, the lifter 134 descends together with the free roller conveyor 132 and the A pallet 112. At this time, the first core 136 is rotated and inverted by the rack cylinder portion 204 of the holding and rotating device 138. In a state where the first core 136 is inverted, the manipulator 140 is lowered, and the lower end of the inverted first core 136 is held by the holding cylinder 142.
Is actuated to pinch, and thereafter, the pinching rotation device 1
38 releases the pinching of the first core 136. The manipulator 140 then rises to the top of the device.

Thereafter, the manipulator 140 moves the manipulator carriage 148 on the traveling rail 150 and stops at a position above the coating tank 160. Next, the manipulator 140 lowers by driving the upper and lower cylinders 146 to sink the first core 136 into the coating tank 160. After the first core 136 is immersed in the coating tank 160 for a predetermined time, it is pulled up from the coating tank 136 and stopped at the upper end. Thereafter, the manipulator 140 is positioned at a position above the coating tank 136.
Drives the oscillating cylinder 144 to tilt and oscillate the first core 136 to flow and discharge the excess liquid. Here, the lower part of the stirring tank 164 and the lower part of the coating tank 160 communicate with each other, and the coating liquid flows from the stirring tank 164 into the coating tank 160, and the coating liquid overflowing from the coating tank 160 flows into the stirring tank 164. Inflow.
Thereby, the coating liquid stirred and uniformed by the stirrer 162 circulates between the stirring tank 164 and the coating tank 160. Further, the coating liquid used in the stirring tank 164 and reduced in amount is supplied.

Thereafter, the manipulator 140 similarly moves the manipulator cart 148 on the traveling rail 150 and returns to the direction of the first entrance 132. During this time, the lifter 134 moves up to the original position together with the free roller conveyor 110 and the A pallet 112. In this state, the manipulator 140 is lowered by the vertical cylinder 146,
The mold is placed on the A pallet 112 in an inverted state. Thereafter, the coating mold is nipped and rotated by the nipping and rotating device 138 and returned to the upright state. Finally, the clamping and rotating device 13
8 is released.

Thereafter, the A pallet 112 on which the erect mold is placed is pushed by the B pallet 114, moves onto the adjacent drive roller conveyor 111, and moves downstream. At this time, the B pallet 114 is empty and moves downstream after passing through the coating station 130 of the first coating apparatus. As described above, in the first coating apparatus 4 of the present embodiment, the first core 136 is nipped and inverted by the nipping rotation device 138 at the entrance 132 of the coating station 130, and then the coating is completed and the nipping rotation Until returning to the device 138, the delivery is performed while being held in the inverted state, and finally, the device is returned to the upright state by the holding and rotating device 138. Further, since the entire first core 136 is immersed in the coating tank 160 for a predetermined time, even if the core shape is complicated, the entire surface of each part is surely covered with the coating liquid. In addition, the first core 13
6 is tilted and oscillated, so that the excess coating liquid entering the core can flow and be released, and the thickness of the coating liquid becomes uniform over the entire surface of the core.

[0037]

As described above, according to the core coating apparatus of the present invention, when the core is to be coated after assembling the core parts, the coating can be effectively performed on the entire surface. .

[Brief description of the drawings]

FIG. 1 is an overall block diagram showing a method of manufacturing a cylinder block mold core to which a core coating apparatus of the present invention is applied.

FIG. 2 is a partial plan view of an entire plan view showing a cylinder block mold core manufacturing apparatus to which the core coating apparatus of the present invention is applied.

FIG. 3 is a partial plan view of an entire plan view showing a cylinder block mold core manufacturing apparatus to which the core coating apparatus of the present invention is applied.

FIG. 4 is a plan view showing an outline of a process A in FIG. 1 and a first molding machine used in the process A;

5 is a partial perspective view showing a core of a cylinder block for a V8 engine manufactured by the method for manufacturing a cylinder block mold core of FIG. 1;

FIG. 6 is a plan view showing a process B of FIG. 1 and an operation of a first robot used in the process B;

FIG. 7 is an explanatory view specifically showing a bonding assembly process in the core assembling cart shown in FIG. 6;

FIG. 8 is a plan view for explaining a first conveyance in a process C of FIG. 1;

FIG. 9 is a front view showing a first coating apparatus which is an embodiment of the core coating apparatus of the present invention.

10 is a side view of the first coating apparatus shown in FIG. 9;

FIG. 11 is a perspective view schematically showing a holding and rotating device used in an embodiment of the core coating apparatus of the present invention.

FIG. 12 is a plan view showing a left holding cylinder portion and a rack cylinder portion of a holding and rotating device used in an embodiment of the core coating device of the present invention.

FIG. 13 is a sectional view taken along lines 13-13 of FIG. 12;

[Explanation of symbols]

 4 First Coating Apparatus 62 Rear End Core 64 Crank Core 66 Front End Core 110 Free Roller Conveyor 130 Coating Station 132 Inlet 134 Lifter 136 First Core 138 Nipping and Rotating Device 140 Manipulator 142 Nipping Cylinder 144 Rocking Cylinder 146 Upper and lower cylinders 147 Guide bar 148 Manipulator cart 150 Running rail 152 Drive chain 154 Sprocket 156 Chain tension spring device 158 Motor with reduction gear 160 Coating tank 162 Stirrer 164 Stirring tank 200 Right holding cylinder section 202 Left holding cylinder section 204 Rack cylinder section

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B22C 9/10 B22C 23/02 F02F 1/00

Claims (4)

(57) [Claims] 1. A first clamping means for clamping a core assembled from predetermined core parts, a reversing means for reversing the core clamped by the first clamping means, A second clamping means for clamping from the first clamping means and releasing the clamping by the first clamping means, a coating tank for coating the core, and a core clamped in an inverted state by the second clamping means. Conveying means for transporting the core to the position of the coating tank and lowering the core to immerse the core in the coating tank; and rocking the core coated in the coating tank above the coating tank. Means, and a core coating apparatus. 2. The first holding means is a pair of holding cylinders that hold the core from both end faces, and the reversing means includes a rack that engages with a pinion gear attached to the holding cylinder. 2. The core coating apparatus according to claim 1, wherein the rack cylinder is arranged to be orthogonal to the holding cylinder. 3. The core coating apparatus according to claim 1, wherein said second clamping means is a manipulator device for clamping a lower end of the core. 4. The core according to claim 1, wherein said transport means has a bogie for transporting the core by traveling on a traveling rail, and a vertical cylinder for moving the core in a vertical direction. Coating equipment.