JPH0634937Y2 - Work processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a work processing device such as a shot blasting device for dropping sand of a casting, a coating device, or the like.

(Prior Art and Its Problems) A conventional cast sand removing device is configured to open and close the entrance and exit of a blast room (processing chamber) by a push-open type door that opens the entrance and exit door by the work itself.
Specifically, the work (casting) suspended from the transport chain
Move and collide with the door, the door is pushed open against the urging force of the urging means, and the work is loaded into the blast room. Was closed by the urging force of the urging means. As described above, in the case where the work collides with the door and the movement force of the work is used to open the door against the urging force of the urging means, when the work collides with the door, the work may be inclined due to resistance. Therefore, for this reason, an excessive force is applied to the carrier chain, which may damage the carrier chain, an overload is applied to the drive source of the carrier chain, and the work is damaged.

In order to prevent this, it is known that the door is made of rubber, but if the work is in a high temperature state such as a casting immediately after casting, it cannot be applied because the rubber will melt or burn. .

(Purpose of Invention) The present invention has been made to solve the above-mentioned problems, and its purpose is to ensure that the work inlet / outlet of the processing chamber can be opened / closed as the work is carried in / out. Of course, there is no door interference with the work, and it is possible to eliminate damage to the transport means, damage to the work, and overload of the drive source of the transport means due to this interference, and there is no problem even if the work is hot. It is to provide a work processing apparatus adapted to be applied.

(Means for Solving the Problems) In order to achieve the above-mentioned object, a work processing apparatus of the present invention comprises a transfer means for transferring a work along a transfer path, and a processing chamber provided in the transfer path. And an opening / closing means which is provided at each of a work inlet and a work outlet of the processing chamber and opens and closes each work inlet / outlet, the work is carried into the processing chamber by the transfer means, and a predetermined amount is provided in the processing chamber. In the work processing apparatus, wherein the work is carried out to the outside of the processing chamber by the carrying means after processing, each opening / closing means for the work inlet and the work outlet comprises a pair of rotary doors. Is provided with a plurality of seal plates that extend radially from the rotation shaft and are arranged at equal intervals in the circumferential direction, and each pair of revolving doors receives the driving force from the carrying means to move the workpiece. Rotating in synchronism with the movement, the rotation centers of the pair of revolving doors are arranged with a predetermined distance in the work transport direction, and the rotation locus circle drawn by the outer edge of the seal plate of one of the revolving doors. Intersects with the circle of rotation locus drawn by the seal plate of the other revolving door, and when the workpiece reaches, the pair of revolving doors
It is opened toward the work side so as to receive the same work, and when passing the work, it rotates so as to wrap the work between the seal plates adjacent to each other, and after passing the work, by the corresponding seal plate of the pair of rotary doors. The feature is that the processing chamber is closed.

(Operation) When the work is moved along the transfer path by the work transfer means,
A pair of revolving doors rotate in synchronization with the movement of the work to open and close to open and close the work entrance and exit of the processing chamber. Therefore, the work is carried in and out of the processing chamber without contacting the revolving door.

In addition, the rotation locus circle drawn by the outer edge of the seal plate of one revolving door and the revolving locus drawn by the seal plate of the other revolving door intersect and overlap, and the work inlet and the work outlet have a pair of revolving doors. It is always covered with the seal plate of and the processing chamber is never completely opened to the outside.

Moreover, since the centers of rotation of the revolving doors are separated from each other, the overlapping state of the seal plates is smoothly established without causing interference between the seal plates, and the sealing property of the processing chamber is enhanced. In addition, between the revolving doors having the seal plates extending from the rotating shaft, a wide work transfer path is formed which enables transfer of a large work.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a shot blasting apparatus to which the present invention is applied. In FIG. 1, reference numeral 1 is a blast room (processing chamber) disposed in the middle of a conveying path, and the inlet side and the outlet side of the blast room 1 are shown. Seal rooms 2 and 3 are located in. As shown in FIG. 2, rails 32 are laid on the ceilings of the entrance-side seal room 2, the blast room 1 and the exit-side seal room 3, and along the rails 32 are work transfer means. The trolley conveyor 4 moves.

A frame 19 made of a mold material is provided above each of the seal rooms 2 and 3.
A support member 8 composed of a horizontal member 20 and a horizontal member 20 is provided so as to face each other at a predetermined interval. These support members
The trolley conveyor 4 is between the frames 19 and 19 of 8 and 8.
It is the running path 22 of the hanging hook 21 of. This road
Below 22 is a work transfer path 5. On the upper part of the hanging hook 21 of the trolley conveyor 4, a chain that runs in parallel along the rail 32 and pulls the trolley conveyor 4.
18 is attached.

Opening / closing means 6 and 7 are disposed in the seal rooms 2 and 3 on the inlet side and the outlet side. Since these opening / closing means 6 and 7 have the same configuration for opening / closing the work entrance / exit of the blast room 1, one opening / closing means 6 will be described, and the other opening / closing means 7 will be denoted by the same reference numerals in the drawings. Is omitted.

The opening / closing means 6 comprises a pair of revolving doors 12 and 26 rotatably supported on the lower surfaces of the horizontal members 20 and 20 of the support members 8 and 8 via bearing devices 9 and 23. One revolving door 12 has a plurality of radial doors (for example, 3
A single plate (seal plate) 12a is provided so as to project. The other revolving door 26 is provided with a plurality of (for example, three) plates (seal plates) 26a radially protruding at equal intervals in the circumferential direction around the rotating shaft 24. The turning radius of the revolving door 12 is
It is set larger than that of the revolving door 26. The rotation locus circle A drawn by the outer edge of each plate 12a of the revolving door 12 is the third
As shown in the drawing, it crosses the center B of the conveying path 5 and a rotation locus circle A'drawn by the outer edge of each plate 26a of the other revolving door 26. The rotary shaft 10 of the revolving door 12 is arranged so as to be offset from the rotary shaft 24 of the revolving door 26 by a predetermined dimension L toward the blast room 1. The sprocket 1 is located on the upper side of the horizontal members 20, 20 at the upper ends of the rotary shafts 10, 24 of the revolving doors 12, 26.
1,25 are fixed respectively. These sprockets 1
1,25 are respectively connected to the second sprockets 15,29 via endless chains 17,31. These second
The sprockets 15 and 29 are fixed to the upper ends of support shafts 14 and 28 rotatably mounted on the upper surfaces of the horizontal members 20 and 20 near the frames 19 and 19 via bearing devices 13 and 27, respectively. A third sprocket 16, 30 is fixed to the support shafts 14, 28 below the second sprocket 15, 29.
These third sprockets 16 and 30 mesh with the chain 18 of the trolley conveyor 4, respectively.

Next, the operation will be described.

A work (object to be processed) W, which is a casting, is hung on the hanging hook 21, and the work W is moved in the direction of the arrow by the traveling drive of the trolley conveyor 4 to the seal room 2 on the inlet side of the blast room 1. Is brought in.

At this time, the trolley conveyor 4 runs and the chain
The third sprocket 16,30 meshing with the chain 18 is integrated with the second sprocket 15,29, the chain 17,31 and the first sprocket 11,2 for the traveling of the chain 18.
Both revolving doors 12 and 26 are rotationally driven via 5 in synchronization with the movement of the chain 18 in the arrow direction.

That is, when the work W comes just before the entrance of the seal room 2, the outer edges of the plates 12a, 26a of the revolving doors 12, 26 are separated from the center line B of the transport path 5 and the entrance of the seal room 2 is made. Is opened, and as the work W moves, the space between the adjacent plates 12a, 12a and 26a, 26a of the revolving doors 12 and 26 rotates so as to wrap the work W, and the work W rotates between these plates 12a,
It moves so as to slip through between 12a and 26a, 26a, and is carried into the blast room through the seal room 2 without contacting these plates 12a, 12a and 26a, 26a. When the loading is completed, the trolley conveyor 4 is stopped, and with the stop, the predetermined plates 12a and 26a of the revolving doors 12 and 26 of the opening / closing means 6 and 7.
The outer edges of the bladders closely overlap each other to close the door to the blast room. In this state, the shot is blown to the work W in the blast room 1 to drop the casting sand. In this case, the door of the blast room 1 is closed by the revolving doors 12 and 26 as described above. Therefore, the shot does not scatter to the outside of the blast room 1. When the trolley conveyor 4 is rotationally driven again after the shot blasting is completed in this way, the revolving doors 12 and 26 are re-rotated, the outlet of the blast room 1 is opened, and the work W does not contact the revolving doors 12 and 26. , Blast room 1 is carried outside.

The present invention is not limited to the shot blasting device, but may be a coating device or the like, and can be applied to any device as long as it may damage the surrounding environment during processing.

(Effect of the Invention) As described in detail above, the work processing apparatus according to the present invention is
A transport means for transporting the work along the transport path, a processing chamber provided in the middle of the transport path, and an opening / closing means provided at each of the work inlet and the work outlet of the processing chamber to open and close each work inlet / outlet. In a work processing apparatus in which a work is carried into a processing chamber by a carrying means, a predetermined processing is performed in the processing chamber, and then the work is carried out to the outside of the processing room by a carrying means, a work inlet and a work outlet Each opening / closing means is composed of a pair of revolving doors, and each revolving door is provided with a plurality of seal plates radially extending from the rotation shaft and arranged at equal intervals in the circumferential direction. Rotating in synchronization with the movement of the work by receiving the driving force from the means, the rotation centers of each pair of revolving doors are arranged with a predetermined distance in the work transfer direction, and one of them is rotated. The rotation locus circle drawn by the outer edge of the seal plate intersects with the rotation locus circle drawn by the seal plate of the other revolving door, and when the work arrives, the pair of revolving doors are set so as to receive the work. When the workpiece passes, it rotates so as to wrap the workpiece between the adjacent seal plates, and after the workpiece passes, the processing chamber is closed by the corresponding seal plates of the pair of rotary doors. The work is carried into the processing chamber without coming into contact with the revolving door, and after the carrying in, the work door of the processing chamber is closed by the revolving door. Since there is no interference of the revolving door with the work in this way, the work does not tilt and an unreasonable force is applied to the work transfer means.
This solves the problem of breakage and eliminates the inconvenience of applying an excessive load to the drive source that drives the conveying means. Further, since the work does not come into contact with the revolving door, the work is not damaged. Further, since the work door of the processing chamber is closed by the revolving door while the work is being processed in the processing chamber, the pollutant does not scatter to the outside of the processing chamber and pollute the surrounding environment with the processing. . Further, since the work does not come into contact with the revolving door, there is no problem even if the revolving door is made of rubber. Further, since the seal plate is extended from the rotary shaft, it is possible to use the work transfer path up to the vicinity of the center of rotation of the rotary door, and it is possible to transfer a relatively large work even when the rotary radius of the rotary door is reduced. In addition, since the centers of rotation of the revolving doors are spaced apart from each other, the overlapping state of both seal plates can be smoothly established without causing interference between the pair of seal plates that rotate in synchronization with the work transfer. The high sealing performance can be efficiently obtained by the sealing action of the seal plate in the state.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention. FIG. 1 is a plan view of a shot blasting device to which the present invention is applied, FIG. 2 is a front view of the main part thereof, and FIG. FIG. 1 ... Blast room (treatment room), 4 ... Trolley conveyor (transportation means), 5 ... Transport path, 6,7 ... Opening / closing means, 12, 26 ...
Revolving door, W ... Casting (work).

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Japanese Patent Laid-Open No. 59-46169 (JP, A) Shoukai 60-65 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A transfer means for transferring a work along a transfer path, a processing chamber provided in the middle of the transfer path, a work inlet and a work outlet of the processing chamber, and opening / closing each work inlet / outlet. Opening / closing means for loading the work into the processing chamber by the transfer means, performing a predetermined process in the processing chamber, and then carrying the work out of the processing chamber by the transfer means. In the work processing apparatus described above, each of the opening / closing means for the work inlet and the work outlet comprises a pair of revolving doors, and each revolving door radially extends from the rotation shaft and is provided with a plurality of seal plates arranged at equal intervals in the circumferential direction. Each pair of revolving doors is rotated in synchronization with the movement of the work by receiving the driving force from the conveying means, and the center of rotation of each pair of revolving doors is in the work conveying direction. Together are arranged exist a predetermined distance have rotation locus circle drawn by the outer edge of the seal plate of the revolving door of one of which
The pair of revolving doors are opened toward the side of the work to receive the work when the work arrives, and adjoin each other when the work passes. A work processing apparatus characterized in that the work is rotated so as to wrap the work between the seal plates, and after the work has passed, the processing chamber is closed by the corresponding seal plates of the pair of rotary doors.