JPS6350148B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for carrying in and out of a workpiece in a grinding apparatus that performs surface treatment after molding of a workpiece such as a cylinder head, cylinder block, or gear housing of an automobile engine. It is related to.

Generally speaking, there is a suspension type of grinding device in which the workpiece is suspended by a moving suspension device and transported from the loading position through the grinding work room to the unloading position. The drawback is that it requires a large area and the device becomes large. In order to eliminate this defect, the same applicant proposed that the cabin be divided into one attachment/detachment chamber and one grinding chamber as shown in Japanese Patent Application No. 55-154049 (Japanese Unexamined Patent Publication No. 57-83367). A rotary partition plate capable of partitioning is rotatably disposed at a fixed position, and the rotary partition plate is provided with a clamp mechanism for clamping the workpiece so as to be located in the attachment/detachment chamber and the grinding chamber of the cabin, respectively, via a mounting disk. The present invention proposes a rotary type grinding device that can simplify the structure and facilitate manufacturing and assembly by providing a device for loading and unloading workpieces corresponding to the loading/unloading chamber. .

However, in the above-mentioned grinding device, the workpiece loading/unloading device advances one fork to receive the polished workpiece in the attachment/detachment chamber from the clamp mechanism and retreats, and then lowers the fork to remove the workpiece from the clamp mechanism. The workpiece was delivered onto the roller conveyor, and then the forks were made to make one more reciprocation to feed the unpolished workpiece on the roller conveyor to the clamp mechanism, which took a long time to carry in and out. This was an obstacle to speeding up the polishing work.

The present invention has been made in order to eliminate the above-mentioned conventional defects, and its purpose is to provide a polishing device that can easily carry workpieces into and out of the loading/unloading chamber and speed up the polishing work. An object of the present invention is to provide a method and device for carrying in and out of a workpiece.

Hereinafter, a first embodiment embodying the present invention will be described with reference to FIGS.
is supported horizontally through the support shaft 3, and a rotary partition plate 6 is mounted on the support shaft 3, which can divide the interior of the cabin 2 into an attachment/detachment chamber 4 and a grinding chamber 5. Attachment disks 7 are fixed to both end faces of the rotary partition plate 6, respectively, and a pair of clamp mechanisms 8 and 9 are attached to each disk 7 so as to sandwich the partition plate 6 therebetween. These clamping mechanisms 8 and 9 clamp a workpiece W, such as a cylinder block, from both sides of the workpiece W, so that the workpiece can be rotated during cleaning.

A centrifugal abrasive material projection device 10 is mounted on the upper part of the cabin 2 in correspondence with the grinding chamber 5, and abrasive materials such as steel balls are directed toward the unpolished workpiece W in the cleaning chamber 5. It has become possible to project In addition, in the cabin 2, the abrasive materials that have been sprayed, burrs shot off from the workpiece, and sugar scraps are collected, and the abrasive materials that can be reused are separated from the waste that is discharged. A sorting/reducing mechanism (not shown) is attached to the projection device 10 so that it can be returned to the projection device 10 .

A window 2a for loading and unloading the workpiece is opened at the front surface (right side in FIG. 1) of the loading/unloading chamber 4, and this window 2a is designed to be opened and closed by a double door 11.

In front of the window 2a, a device of the present invention for carrying workpieces into and out of the loading/unloading chamber 4 is installed. To explain this loading/unloading device, an upper horizontal frame 12 is fixed to the upper surface of the cabin 2 facing forward, and the front end of the horizontal frame 12 is supported by a support 13. A lower horizontal frame 14 is fixed below the upper horizontal frame 12, and both horizontal frames 12,
A longitudinally movable frame 16 is attached between the rollers 14 via rollers 15. This back-and-forth moving frame 16 is reciprocated toward the attachment/detachment chamber 4 by a back-and-forth moving rod 18 of a horizontal cylinder 17 attached to the upper horizontal frame 12.

An elevating frame 20 is attached to the longitudinally movable frame 16 via rollers 19, and an upper fork 21 and a lower fork 22 capable of supporting a workpiece are mounted on the elevating frame 20 horizontally toward the attachment/detachment chamber 4. It is supported. Similarly, the lifting frame 20 is illustrated with an upper clamp arm 23 and a lower clamp arm 24 for stably gripping the workpiece by pressing downward the upper surface of the workpiece supported on the upper and lower forks 21 and 22. They are mounted so that they can be moved relative to each other in the vertical direction by cylinders that do not have the same structure. A self-locking vertical cylinder 25 is attached to the longitudinally movable frame 16, and its elevating rod 26 moves the elevating frame 20, upper and lower forks 21, 22.
Furthermore, the upper and lower clamp arms 23, 24
can be moved up and down in an integrated manner.

As shown in FIG. 3, on the right side of the upper fork 21, a roller conveyor 27 for feeding unpolished workpieces W onto the fork 21 is horizontally arranged. A horizontal frame 28 is supported in a fixed position above the conveyor 27, and a pushing arm 30 for pushing the workpiece W on the conveyor 27 via rollers 29 is supported on the horizontal frame 28. , this arm 30 is reciprocated in the left-right direction by a rod 32 of a cylinder 31 attached to the horizontal frame 28.

Below the roller conveyor 27, a push cylinder 33 for pushing the polished workpiece W on the lower fork 22 to the left is arranged horizontally, and a press plate 35 is stopped at the tip of the rod 34. It is worn. On the left side of the lower fork 22, a lift cylinder 36 is erected and fixed upward for supporting the abrasive workpiece W pushed out from above the fork 22 by the pressing plate 35 and then transporting it upward. A support plate 38 is fixed horizontally to the upper end of the rod 37 of 36.

On the left side of the support plate 38 is a workpiece W ¹ to be polished so as to be located at the same height as the roller conveyor 27.
An abrasive removal device 39 is arranged to grip and rotate the workpiece to drop abrasive materials and debris inside the workpiece, and on the left side of the removal device 39 is a roller conveyor for transporting the workpiece ^W1 . 40 are arranged. A push arm 43 is supported on a horizontal frame 41 disposed above the support plate 38 via a roller 42 so as to be able to reciprocate in the left and right direction. 45, so that the workpiece ^W1 on the support plate 38, which has been moved to the uppermost moving position, can be transferred into the abrasive material removing device 39. Note that claws 43a and 30a are hung from the tips of this push arm 43 and the push arm 30 so as to be rotatable to the left for allowing passage of the workpiece.

Next, the operation of the cleaning device configured as described above will be explained.

Now, FIGS. 1 and 3 show the abrasive material projection device 10.
is stopped, the door 11 of the cabin 2 is closed,
On the other hand, the longitudinal movement frame 16 is in the most retracted position, and the elevating frame 2
0 is at the lowest position, and the abrasive workpiece carried out by the previous carrying-in/carrying-out operation is placed on the lower fork 22.
This shows a state in which the workpiece W ¹ is supported and the clamp arm 24 is further separated upward from the workpiece W ¹ to complete one loading/unloading operation.

From this state, when the rotation support shaft 3, partition plate 6, mounting disk 7, etc. are rotated together in the direction of the arrow in FIG. The polished workpiece ^W1 is rotated toward the attachment/detachment chamber 4, and the unpolished workpiece W in the attachment/detachment chamber 4 is rotated toward the grinding chamber 5, respectively. Simultaneously with the start of this workpiece reversal and exchange operation, the push cylinders 31 and 3
The rods 32 and 34 of No. 3 are moved to the left in FIG. The object W ¹ is moved onto the support plate 38 by the push plate 35 . (4th
(See figure) At the same time that the support shaft 3 etc. are rotated 180 degrees and the replacement of the workpiece is completed, the workpiece W is supplied onto the upper fork 21 and the polished workpiece W ¹ is taken out from the lower fork 22. However, the opening operation of the door 11 is performed immediately before and after the completion of the operation, and the upper clamp arm 23 is moved downward by a cylinder (not shown) between the completion of the supply and removal operation and the completion of the opening operation of the door 11. The unpolished workpiece W is pressed and clamped.

After the clamping of the workpiece W is completed, the lifting plate 20, both forks 21 and 22, both clamp arms 23 and 24, etc. are raised together by the rod 26 of the vertical cylinder 25, and the lower fork 22 is moved up as shown in FIG. The lifting cylinder 25 is stopped in a state where it is located slightly (for example, 5 cm) below the workpiece W ¹ in the attachment/detachment chamber 4, and the lifting operation is stopped.

Thereafter, when the horizontal cylinder 17 is operated and the rod 18 advances the longitudinally moving frame 16 toward the attachment/detachment chamber 4, the elevating plate 20, upper (lower) forks 21, 22, etc. are also advanced together. When the lower fork 22 is moved directly below the workpiece W ¹ in the attachment/detachment chamber 4, the cylinder 17 is stopped and the forward/backward moving frame 1 is moved.
6 is stopped. (See Figure 6). On the other hand, cleaning room 5
At the same time as the horizontal cylinder 17 starts operating, the abrasive material is projected from the abrasive material projection device 10 toward the unpolished workpiece W to perform the polishing work.

When the aforementioned forward movement of both forks 21 and 22 is completed, the lifting frame 20 and both forks 21 and 22 are slightly raised (for example, 5 cm) by the rod 26 of the vertical cylinder 25, and the lower fork 22 is placed on the underside of the workpiece ^W1 . It will stop when it is in contact. After that, when the lower clamp arm 24 is moved down and the workpiece W ¹ on the lower fork 22 is clamped,
The clamp mechanism 8 that was gripping both ends of the workpiece W ¹ is released, and the workpiece W ¹ is attached to the lower fork 22.
passed on to the top.

Thereafter, the rod 26 of the vertical cylinder 25 is moved down to lower the elevating plate 20, both forks 21, 22, etc., and the unpolished workpiece W on the upper fork 21 is moved to a position corresponding to the clamp mechanism 8. When stopped, the workpiece W is clamped by the clamp mechanism 8 (see FIG. 7). When this clamping operation is completed, the upper clamp arm 23 is raised, the grip of the workpiece W by the arm 23 is released, and the workpiece W is transferred to the clamp mechanism 8.

Next, when the rod 26 of the vertical cylinder 25 is lowered slightly (for example, 5 cm), the upper fork 21
is stopped slightly away from the lower surface of the workpiece W. Furthermore, when the rod 18 of the horizontal cylinder 17 is moved rearward, both forks 21 and 22 are moved backward,
During this operation, the abrasive material projection device 10 is stopped, the cleaning operation is stopped, and the door 11 begins to close.

When both of the forks 21 and 22 move back and stop moving to the retreat (workpiece supply/retrieval) position shown in FIG ^. When the clamp is released and the door 11 is completely closed, one cycle of the workpiece loading/unloading operation is completed, and thereafter, the same operation as the aforementioned loading/unloading operation is repeated.

By the way, in this first embodiment, fork 21,
22 moves along a rectangular circular trajectory shown by the solid line arrow in FIG. It may also be made to increase.

Now, in the first embodiment of the present invention, the elevator frame 2
The upper fork 21 and the lower fork 22 are attached to the workpiece 0, and when both forks 21 and 22 move back and forth, the unpolished workpiece W is carried into the attachment/detachment chamber 4, where it is gripped by the clamp mechanism 8. The polished workpiece W ¹ and the unpolished workpiece W are transferred, and the polished workpiece W ¹ is carried out from the attachment/detachment chamber 4 when both forks go back, so the workpiece to the attachment/detachment chamber 4 is The loading/unloading operation of W, W ¹ only requires one reciprocating movement of the lifting frame 20, and as a result, the loading/unloading time of the workpiece can be significantly shortened, and the speed of the polishing work can be increased.

Next, a second embodiment of the present invention will be described with reference to FIGS. 8 and 9.

In this second embodiment, as shown in FIG. 8, the height of the conveyor 40 for transporting the polished workpiece ^W1 is set lower than the conveyor 27 for transporting the unpolished workpiece W, and the conveyor 40 is located at the supply and take-out position. The lower fork 22, the abrasive material removal device 39, and the conveyor 40 are at the same height, and the lift cylinder 36 for the workpiece ^W1 is omitted. In addition, as shown in FIG. 9, fork 21, 2
The supply and take-out position of No. 2 is placed upward, and the fork is moved along the locus shown by the arrow in the figure in accordance with the loading/unloading operation of the workpiece.

Therefore, in this second embodiment, both forks 21,
As shown by the diagonally lined locus 22, the lifting operation is performed during the retreating operation, which reduces the unloading time of the workpiece ^W1 , and also has the advantage that the structure can be simplified and the device can be made more compact. However, other configurations, functions, and effects are substantially the same as those of the first embodiment described above.

Next, a third embodiment of the present invention is shown in FIGS. 10 and 1.
Figure 1 will be explained.

In this embodiment, the conveyor 27 for carrying in the unpolished workpiece W is positioned below the conveyor 40 for carrying out, the unpolished workpiece W is supported on the lower fork 22, and the workpiece W is polished on the upper fork 21. This embodiment differs from the first embodiment in that it supports the object ^W1 , that the movements of both forks 21 and 22 are shown by the arrows in FIG. 11, and that the lift cylinder 36 is omitted. The structure, operation, and effect are the same as in the first embodiment.

Furthermore, a fourth embodiment of the present invention is shown in FIGS.
I will explain about it.

This fourth embodiment has a short shift cylinder 46 at the upper end of the vertical cylinder 25 in the third embodiment.
are connected upward, and the upper end of the rod 47 is connected to the longitudinal movement frame 16. Then, the shift cylinder 46 moves the upper fork 21 to the lower surface of the workpiece ^W1 as shown in FIGS. 12b to 12c, and moves the lower fork 22 away from the workpiece W as shown in FIGS. I'm trying to get it to work. Therefore, in this embodiment, the cylinder 25
There is an advantage that it is not necessary to use a cell lock type, but other configurations, functions, and effects are the same as those of the third embodiment.

In addition, in this fourth embodiment, the cylinder 25
may be located at the top and the shift cylinder 46 at the bottom, with the upper (lower) clamp cylinder 2
3 and 24 may be of a rotating type.

As described in detail above, the present invention supplies an unpolished workpiece to one of a pair of upper and lower workpiece gripping mechanisms at the workpiece supply/take-out position, and removes the polished workpiece gripped by the other gripping mechanism. The workpiece is taken out, and then both of the gripping mechanisms are moved toward the workpiece attachment/detachment chamber, and the empty gripping mechanism is made to correspond to the clamp mechanism of the workpiece attachment/detachment chamber, and the abrasive gripped by the clamp mechanism is removed. Receives the workpiece to be swept, then moves both gripping mechanisms to match the unswept workpiece with the empty clamping mechanism, transfers the workpiece to the clamping mechanism, and processes both gripping mechanisms. By moving to the object supply/retrieval position, the workpiece can be quickly carried in and out of the loading/unloading chamber, which has the effect of speeding up the polishing work.

[Brief explanation of the drawing]

FIG. 1 is a left side view, partially in cross section, showing a first embodiment of the workpiece loading/unloading device in the grinding apparatus of the present invention, the second is a sectional view taken along the line - - in FIG.
The figure is a front view, FIG. 4 is a schematic front view for explaining the loading and unloading operation of the workpiece, and FIGS. 5 to 7 are left side views and left side views for explaining the loading and unloading operation of the workpiece, respectively. 8 is a front view of the second embodiment, FIG. 9 is a left side view, and FIG. 10 is a front view of the third embodiment.
FIG. 11 is a left side view, and FIGS. 12a to 12f are schematic left side views for explaining the operation of the fourth embodiment. Cabin...2, Detachable room...4, Grinding room...
5. Fore-and-aft moving frame...16, Horizontal cylinder...17.
Lifting frame...20, upper (lower) fork...2
1, 22, Vertical cylinder...25, Pushing arm...
...30, Push cylinder...31, 33, Push plate...35, Shift cylinder...46.

Claims (1)

[Claims] 1. At the workpiece supply and take-out position, an unpolished workpiece is supplied to one of a pair of upper and lower workpiece gripping mechanisms, and a polished workpiece held by the other gripping mechanism is After taking out the workpiece, the two gripping mechanism parts are moved toward the workpiece attachment/detachment chamber, and the empty gripping mechanism parts are made to correspond to the clamp mechanism of the workpiece attachment/detachment chamber, and the abrasive workpiece held by the clamp mechanism is moved. Then, both gripping mechanisms are moved to match the unpolished workpiece with the empty clamping mechanism, and the workpiece is transferred to the clamping mechanism, and then both gripping mechanisms are moved to feed the workpiece. A method for carrying in and out a workpiece in a grinding device, characterized by moving the workpiece to a take-out position. 2. Supplying the unpolished workpiece to the upper gripping mechanism of the pair of upper and lower workpiece gripping mechanisms, and taking out the polished workpiece from the lower gripping mechanism, and then moving both gripping mechanisms toward the loading/unloading chamber. The empty lower gripping mechanism is then matched with the clamp mechanism to receive the workpiece to be polished, and then both gripping mechanisms are lowered to remove the unpolished part from the upper gripping mechanism. 2. A method for carrying in and out of a workpiece in a polishing apparatus according to claim 1, wherein the workpiece is delivered to the clamp mechanism, and both said gripping mechanisms are returned to the workpiece supply and removal position. 3 After the empty lower gripping mechanism rises from the workpiece supply/removal position to a position slightly lower than the clamping mechanism in the attachment/detachment chamber, the upper and lower gripping mechanisms are moved forward toward the same clamping mechanism, and then moved again. The lower gripping mechanism ascends to receive the polished workpiece, while the unpolished workpiece gripped by the upper gripping mechanism is delivered to the clamp mechanism, and then the upper gripping mechanism is lowered slightly to pick up the workpiece. 3. A method for carrying in and out a workpiece in a polishing apparatus according to claim 2, wherein the workpiece is returned to a supply and take-out position. 4 Both the upper and lower gripping mechanisms rise while moving forward toward the attachment/detachment chamber, and after the lower gripping mechanism rises to a position slightly lower than the workpiece clamped by the clamping mechanism, it is moved forward and removed from the workpiece. 3. A method for carrying in and out a workpiece in a polishing apparatus according to claim 2, wherein the workpiece is moved directly below the workpiece to be swept, and then slightly raised again to receive the workpiece. 5. Supplying the unpolished workpiece to the upper gripping mechanism of the pair of upper and lower gripping mechanisms, and taking out the polished workpiece from the lower gripping mechanism, and then advancing both gripping mechanisms toward the attachment/detachment chamber. The lower gripping mechanism receives the ground workpiece from the clamping mechanism, then both gripping mechanisms are lowered to transfer the unground workpiece of the upper gripping mechanism to the empty clamping mechanism, and then both gripping mechanisms are removed. 2. A method for carrying in and out of a workpiece in a polishing apparatus according to claim 1, wherein the workpiece is moved backward, and raised midway through the retreat to return to the workpiece supply and removal position. 6. Take out the polished workpiece from the upper gripping mechanism part of the pair of upper and lower workpiece gripping mechanisms, and supply the unpolished workpiece to the lower gripping mechanism part, and then move both gripping mechanisms parts forward to transfer the workpiece to the upper gripping mechanism. The part receives the ground workpiece gripped by the clamp mechanism of the attachment/detachment chamber, and then both gripping mechanism parts are raised to transfer the unpolished workpiece in the lower gripping mechanism part to the clamp mechanism, and then both gripping mechanisms 2. A method for carrying in and out a workpiece in a polishing apparatus according to claim 1, wherein the part is lowered while retracting and returned to the supply and take-out position. 7. In a grinding device in which a workpiece is clamped by a clamp mechanism and can be exchanged between an attachment/detachment chamber and a grinding chamber, a pair of upper and lower workpiece gripping mechanisms are connected in the vertical direction and in the attachment/detachment chamber in correspondence with the attachment/detachment chamber. A feed mechanism is provided for supplying an unpolished workpiece to one of the gripping mechanisms, and a take-out mechanism is provided for taking out the polished workpiece from the other gripping mechanism. A workpiece loading/unloading device characterized by: 8 The pair of upper and lower workpiece gripping mechanisms include a back-and-forth movable frame that is moved back and forth by a horizontal cylinder, an elevating frame that is attached to the frame so as to be movable in the vertical direction by a vertical cylinder, and a pair of upper and lower pieces that are attached to the elevating frame. 8. A workpiece loading/unloading device in a polishing apparatus according to claim 7, comprising: forks; and a pair of upper and lower clamp arms provided corresponding to each fork.