JPH04189455A - Transfer machine - Google Patents

Abstract

PURPOSE:To process a back surface and a vertical surface continuously with surface processing by installing processing units on both of the surface and back of a line of columns, and circulating works around them. CONSTITUTION:Guide rails 3, 4 for pallets are formed of a number of pairs of unit guide rails 3A-3D, 4A which are shorter than their feed pitch disposed at the equal pitch to the feed pitch. Surface processing units, back processing units, vertical surface processing units for rotating a pallet 5 of which surface is put laterally for a desired angle and processing it, and inverting units for rotating the pallet 5 with the works for an integer multiplication of 90 deg. are provided. One pair of unit guide rails are disposed horizontally for the surface and back processing unit, and one pair of unit guide rails are provided in the surface of an indexing table for the vertical surface processing unit, and a hollow drum 22 is provided for the inverting unit, where two unit guide rails 3B are fixed in this hollow drum 22 at a phase difference of 90 deg..

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a transfer machine.

(Prior technology) A transfer machine has a large number of processing units arranged in a straight line, and the processing units are installed facing inward on both sides of a linear transfer path for intermittently feeding workpieces at a constant pitch. is known.

(Problem to be solved by the invention) In conventional transfer machines, two rows of processing units were arranged facing each other, and the workpiece was passed between them, making it difficult to replace the cutting tools. However, if we tried to make the replacement easier, it would be necessary to provide extra space and the installation would take up a lot of space.

In order to solve this problem, the applicant of the present invention installed machining units on both the front and back sides of one column so that the workpieces could be circulated around the machining units. Atsushi first proposed a transfer machine that could reduce the area (patent application No. 1-31388).
(See Specification No. 8).

However, in the above-mentioned prior invention, the surface of the pallet on which the workpieces are placed and transported always faces upward.
Although it is possible to perform surface machining by machining the surface of a workpiece from above, in order to perform back and elevation (side) machining of the workpiece, it is necessary to remove the workpiece from the pallet and change its orientation. It required the troublesome work of fixing it again.

In this invention, as in the earlier invention, processing units are attached to both the front and back sides of a row of columns, and workpieces are circulated around the units, thereby making it easy to replace processing cutters and making installation easier. It is an object of the present invention to provide a transfer machine that has a narrow area and is capable of performing back surface processing and vertical surface processing in succession to surface processing, which was impossible in the prior invention.

(Means for Solving the Problems) The transfer machine of the present invention has a large number of processing units arranged on both the front and back sides of a horizontally long column, and guides pallets for mounting workpieces on both the front and back sides of the column. A rectangular pallet passage is provided around the column by providing pallet guide rails at both ends of the column, and shuttle guide rails for transporting the pallet conveyor at right angles to the pallet guide rail. In a transfer machine, a large number of pallets arranged on the pallet guide rail are fed at a constant pitch to perform desired processing on both the front and back sides of the column using a processing unit. ”
- The processing unit is formed by arranging multiple sets of unit guide rails that fit into the grooves on both sides of the pallet and are arranged at a pitch equal to the feed pitch, each set consisting of two unit guide rails that are shorter than the feed pitch; A surface processing unit for processing workpieces on a pallet surface with the pallet surface facing upward.
A back processing unit is used to process pallets with the surface facing downward, an elevation processing unit is used to process pallets with the front surface facing sideways by rotating them at any angle around a horizontal axis perpendicular to the transport direction, and It includes a reversing unit for rotating the workpiece by an integral multiple of 90 degrees around the transport direction axis, and in the above surface processing unit and the back surface processing unit, each set of unit guide rails is arranged horizontally, and the above vertical surface A set of unit guide rails is provided on the surface of an indexing table that is rotatable around the horizontal axis, and the reversing unit is rotated at 90 degrees around the transfer axis. A hollow drum is provided which is rotated by an integral number of times, and two sets of unit guide rails are fixed within this hollow drum with a phase difference of 90 degrees.

(Function) A pallet is placed on each unit guide rail of the front and back pallet guide rails, and one pallet is placed on each shirttle on the shirttle guide rails at both ends of the column, and the unit guide rails are placed as a whole. Two more pallets than the number of pallets are placed around the column.

The workpieces attached to the pallets on each unit guide rail on both the front and back sides are processed by the corresponding processing units, and the workpieces attached to the pallets on the front row pallet or the shuttle at one end of the column - 〇 - together with the pallet on the inner rail, and the front row The pallets are sequentially fed by l pitches together with the pallets on the guide rail for shirttles on the other end side, and are transferred to the pallet on the guide rail for shirttles on the one end side or to one end of the guide rail for the front row (7) pallets). The pallet is transferred to the pallet at the other end of the pallet guide rail of the column or to the shirttle on the guide rail for the shirttle at the other end, and the pallet is transferred to the pallet on the guide rail for the shirttle at the other end or the other end of the pallet guide rail in the front row. Then, the pallet at one end of the pallet guide rail of this front row is transferred to the shuttle on the shuttle guide rail on one end side. Next, the shuttlecocks on one end side and the other end side are each driven, and the shuttlecock on the one end side moves from the pallet guide rail side of the front row to the pallet guide rail side of the front row.
In addition, the shuttle on the other end transports the pallets from the front row pallet guide rail side to the front row pallet guide rail side, and then the one end shuttle or pallet is transferred to the front row side, and the other end shuttle or pallet is transferred to the front row side. Only the shirts are returned to their original positions, leaving each on the front row side. By repeating this process, the workpieces on each pallet are processed by each processing unit in turn.

Thus, in the surface processing unit, surface processing is performed from above on a workpiece that is fixed on a pallet via a jig. When the reversing unit and the back processing unit are arranged in order after the surface processing unit, when each pallet is sequentially fed, a set of unit guide rails are arranged horizontally within the pallet of the surface processing unit or the hollow drum of the reversing unit. Then, by rotating this hollow drum 180 degrees in the forward direction, the pallet in the hollow drum is turned over, and the front back side of the turned pallet is machined when the next pallet is sequentially fed. At the same time, a pallet 1 is transferred from the rear surface processing unit to the hollow drum. Then, in the back surface processing unit, back surface processing is performed on the workpieces on the lower side of the pallet from above, and in the reversing unit, the hollow drum is rotated 180 degrees in the forward direction and the pallet is turned over.

If a reversing unit and an elevation machining unit are arranged in order after this back processing unit, when the pallets are fed sequentially, the reversing pallet of the back processing unit is transferred to the reversing unit, and then the hollow drum of this reversing unit is sequentially transferred. By rotating the pallet 90 degrees in the direction above, the pallet is turned vertically and the workpiece faces the opposite side of the column, and this vertically standing pallet is used as an elevation machining unit when the next pallet is sequentially fed. At the same time, the reverse pallet is transferred from the back surface processing unit to the unit guide rail in the horizontal direction in the rear hollow drum. Then, in the elevation processing unit, the indexing table is rotated by a predetermined angle to perform elevation processing, and after the desired elevation processing is completed, it is returned to the initial phase, and in the reversing unit, the hollow drum is rotated at 90 degrees. A rotation is performed.

In addition, if a reversing unit and an elevation machining unit are placed in order in front of the surface processing unit, when the pallets are sequentially fed, the pallet of the surface processing unit is transferred to the reversing unit, and the hollow drum of this reversing unit is moved in the forward direction or By rotating 90 degrees in the opposite direction, the above-mentioned front-facing pallet is turned vertically to face the opposite front of the workpiece or column, and this vertically-standing pallet or the next pallet can be machined in elevation during sequential feeding. The pallet is transferred to the unit guide rail on the surface of the indexing table of the unit, and at the same time the pallet is transferred from the surface processing unit to the horizontally phased unit guide rail in the rear hollow drum. Then, in the elevation processing unit, the indexing table is rotated by a predetermined angle to perform elevation processing, and after the desired elevation processing is completed, it is returned to the initial phase, and in the reversing unit, the hollow drum is rotated in the forward direction or A 90 degree rotation in the opposite direction is performed and then the next pallet feed is started.

(Example) In Fig. 1, a column 1 is formed long in the vertical direction of the paper, and has a surface processing station 2A, a reversing station 2B, and a back processing station 2 on its front side (left side in the figure).
A large number of processing stations such as C and elevation processing station 2D are formed on the back side, and a large number of surface processing stations 2A are formed at equal pitches, and surface processing stations 2A and back surface processing stations other than the reversing station 2B are formed on the back side. Esthetics
The John 2C and the elevation processing station 2D are each provided with a processing unit (not shown) including a predetermined cutting tool. On the front side of the column 1, there are a pair of short unit guide rails 3A, 3B corresponding to the surface processing station 2A, reversing station 2B, back surface processing station 2C and elevation processing station 2D, respectively.
3C and 3D are arranged along a common center line and at the same pitch as the two processing stations to form a guide rail 3 for the front row pallets, and a surface processing station is provided on the back side of the column 1. 2A, a large number of unit guide rails 4A are similarly arranged to form a front row pallet guide rail 4, and each of the unit guide rails 3A, 3B,
Pallets 5 are arranged at 3C13D and 4A, respectively. Further, a pair of shirttle guide rails 7.8 for conveying shirttles 6 of the pallet 5 are provided at one end (upper side in the drawing) and the other end of the column 1, respectively. The above-mentioned guide rails 3.4.7.8, which are once again provided at right angles between the ends of the column l, form a rectangular conveying path for the pallets 5 around the column l.

The above pallet 5 has a rectangular plate shape as shown in FIG. 2 and FIG. A push rod 11 is protruded from the center of both front and rear ends, and the distance between the tips of the front and rear push rods 11.11 is equal to the arrangement pitch of the processing stations 2A to 2D. A processing center hole 5b through which a cutting tool can be inserted is opened in the center of the pallet 5, and four jigs 12 for attaching the workpiece W are fixed to the surface surrounding this center hole 5b. Pin holes 5c for positioning the pallet 5 are drilled at the four corners. On the other hand, on the back side, a total of eight circular projections 13 are provided in two rows protruding downward across the center line connecting the front and rear push rods 11.11.

The above figures 2 and 3 show the surface processing stage 2.
In this surface processing station 2A, the left and right unit guide rails 3A, 3
Lower base 9 at both front and rear ends of A (or 4A, 4A)
(See Figure 3) A total of four lifting rods 14 protrude from the
The upper end of the base 9 is connected to the upper end thereof, and a piston rod that is moved up and down by being driven by a fluid cylinder below the base 9 is connected to this lifting rod 14. Further, a positioning pin 9m corresponding to the pin hole 5c of the pallet 5 is provided inside the lifting rod 14.
When the pallet l-5 is lowered by a predetermined height from the transport position shown in the figure to the processing position below, the positioning pin 9m on the base 9 fits into the pin hole 5c of the pallet 5, and the pallet 5 is The position is fixed, and surface processing is performed in this state. Note that the pallet 5 is transferred along the center line of the push rod 11 at the illustrated transfer position, that is, the center line N in the transfer direction.

The shuttlecock 6 at the lower left of FIG. 1 and its guide rail 8 are shown in FIGS. 4 and 5. As shown in FIG. 4, the shuttlecock 6 is formed into a rectangular plate shape large enough to fit the four circular protrusions 13 at the center of the lower surface of the pallet 5, and has the above-mentioned It has two guide grooves 6a and 6b each for guiding the circular protrusion 13 in the vertical and horizontal directions, and both ends of the vertical guide groove 6a are open to allow the circular protrusion 13 to pass through. The left end of the lateral guide groove 6b is closed and the right end is open, allowing the circular projection 13 to pass only to the right.

On the other hand, on the bottom surface of the shuttlecock 6, as shown in FIG.
A pair of legs 6c corresponding to the shirttle guide rail 8,
A shuttlecock guide rail 8 is slidably inserted into a hole bored in the leg 6c. The intermediate part of the legs 6c and 6c is the shirttle guide rail 8.
．． By driving the transmission chain 8a, the shirttle 6 moves along the shirttle guide rail 8 at one end side of the column l to guide the front and back pallets. It is adapted to reciprocate between the ends of the rail 3.4.

An intermediate guide plate 15 is installed between the other end of the pallet guide rail 3 in the front row and the other end side shirttle guide rail 8. This intermediate guide plate 15 is provided with two guide grooves +5a for vertically guiding the circular protrusion 13 on the lower surface of the pallet 5 and one guide groove 15b for horizontally guiding the circular protrusion 13 on the lower surface of the pallet 5 on its upper surface. The vertical guide groove 15a is open at both ends to allow the circular protrusion 13 to pass through, and the horizontal guide groove 15b is open at its right end only to allow the circular protrusion 13 to pass through to the right. .

An end guide plate 16 is installed on the opposite side of the intermediate guide plate 15 with the other end side shirttle guide rail 8 interposed therebetween. This end guide plate 16 has two longitudinal guide grooves 16a for vertically guiding the circular protrusion 13 and one guide groove 16b for horizontally guiding the circular protrusion 13. The guide groove 16a is open only on the shirt handle 6 side, allowing the two left and right circular protrusions 13 to move back and forth between the shirt handle 6, and the lateral guide groove 16b is open at the right end, allowing the circular protrusions 13 Allows passage on the right. That is, the center portion 4 of the eight circular protrusions 13 on the bottom surface of one pallet 5
The vertical guide groove 6a of the shuttlecock 6 has circular protrusions 13,
6a and the lateral guide grooves 6b, 6b, two circular protrusions 13 on one side or the lateral guide groove 15b of the intermediate guide plate 15, and two circular protrusions 13 on the opposite side or the end guide. It is positioned in the lateral guide groove 16b of the plate 16.

A grooved rail 17.17 is laid on the right side of the intermediate guide plate 15 and the end guide plate 16, respectively, so as to extend the horizontal guide grooves +5b and 16b, and this grooved rail 17.17 The shaft guide rail 8 constitutes a shaft passage for the shuttle 6 to move back and forth. An intermediate guide plate 15 similar to the above is provided at the opposite end of the grooved rail 17.
And an end guide plate 16 is installed (see Fig. 1), and a similar shuttlecock 6 and a transmission chain 8a for driving the shuttlecock are installed on the side of the shuttle guide rail 7.7 on the one end side facing across the column 1. , an intermediate guide plate 15, an end guide plate 16 and a grooved rail 17 are provided, and a shuttle passage is likewise formed. As shown in the upper left of FIG. 1, a pallet feed fluid cylinder 18 for the front row is provided as a pallet feed means at the end of the shuttle guide rail 7.7 on one end side along the center line N in the transfer direction. A chuck 19 is fixed to the tip of the piston rod, and an end face hole of this chuck 19 is adapted to fit with the tip of the push rod 11 of the pallet jig 5. Similarly, a pallet/yl/feeding fluid cylinder 18 for the front row is provided along the center line N in the transfer direction at the end of the guide rail 8.8 for the shuttlecock on the other end side in the lower right corner of FIG. In addition, a stopper 20 (a fourth
and FIG. 5) are provided.

6 and 7 show the reversing station 2B of FIG.
An example of the reversing device 21 provided in FIG. A hollow drum 22 is provided on the center line N in the transfer direction, and this hollow drum 22 is rotatably supported by a total of six guide rollers 24 provided at the front and rear of each of the three shafts 23 surrounding the hollow drum 22. Ru. Then, an outer small gear 26 meshes with a ring-shaped gear 25 fixed to the outer surface of the hollow drum 22, and as the small gear 26 is driven, the hollow drum 22 is rotated by an integral multiple of 90 degrees according to the setting.

Two sets of four unit guide rails 3B are fixed to the inner surface of the hollow drum 22 at 90-degree intervals via support fittings 27, and the pallet 5 is held in both the solid line position and the chain line position in FIG. I'm starting to get support. Note that when this reversing device 21 is installed between the two surface processing stations and the back surface processing station 2C, it can be rotated 180 degrees depending on the settings, and also between the surface processing station 2A and the elevation surface processing station 2D. , and when it is provided between the back surface processing station 2C and the elevation surface processing station 2D, it is rotated by 90 degrees depending on the setting.

8 and 9 show a unit guide rail 3C for back surface processing provided in the back surface processing station 2C of FIG. 1.

As in the surface processing station 2A, a total of 4 rails protruding from the lower base 9 (see FIG. 9) are provided at both front and rear ends of the left and right unit guide rails 3C13C of the center line N in the transfer direction.
The upper end of a lifting rod 31 is connected to the lifting rod 31, and a piston of a fluid cylinder (not shown) below the base 9 is connected to the lifting rod 31. Therefore, on the base 9 of this back processing station 2C, there is a pallet 5 that has been turned over.
A large recess 9a is formed on the lower surface of the holder to accommodate the jig 12 and the workpiece W. Further, convex portions 9b are formed on both left and right sides of the base 9, and these convex portions 9b, 9b on the left and right sides are formed.
A reference plate 32 covering the pallet 5 is fixed on the top, and positioning pins 33 corresponding to the bin holes 5c at the four corners of the pallet 5 are protruded from the lower surface of the reference plate 32.
Escape holes 34 corresponding to the eight circular protrusions 13 on the upper surface of the pallet 5 are formed, and a center hole 35 corresponding to the center hole 5b of the pallet 5 is also formed in the center of the reference plate 32. When the pallet 5 rises from the illustrated transport position to the upper processing position, the positioning pins 33 of the reference plate 32 fit into the bin holes 5c of the pallet 5, and the pallet 5 fits into the relief holes 34 of the reference plate 32. The circular protrusion 13 enters and the position of the pallet 5 is fixed, and in this state the tool or reference plate 32 descends from above.
enters the center hole 35 of the pallet 5 and the center hole 5b of the pallet 5,
Machining is performed on the back surface of the workpiece W.

10 and 11 show the indexing table 47 provided in the elevation machining station 2D of FIG. 1. In FIG. 10, reference numeral 40 denotes a bracket that protrudes horizontally from the lower part of the column 1, and a horizontal table shaft 41 that intersects the center line N in the transfer direction at right angles is attached to this bracket 40, and bearings 42 and 43 are attached to the bracket 40. A worm gear 44 is fixed to the column L side end of the table shaft 41, and a worm gear 44 is attached to the worm gear
5 are engaged, and this worm 45 is connected to the drive shaft 46 (11th
(see figure) and rotates through a predetermined angle.

On the other hand, a disk-shaped indexing table 47 is fixed to the opposite end of the table shaft 4I. This index table 47
has an oval-shaped (see FIG. 11) base part 48 on its surface, and a fluid cylinder 49 is provided at both ends of this base part 48. A guide rod 51 that protrudes from the surface and is connected to the center of the unit guide rail 3D at its protruding end and slides with the piston rod 5o on both sides of the piston rod 50.The tips of the guide rods 51 and 51 are connected to both ends of the unit guide rail 3D. The pallet 5 is supported between the pair of unit guide rails 3D and 3B. Furthermore, on the surface of the platform 48, there are four positioning pins 52 corresponding to the bottle holes 5c at the four corners of the pallet 5, and two rows of guide grooves 53 corresponding to the two rows of circular protrusions 13 on the back surface of the pallet 5. from the pallet 5 or the illustrated transport position to the fluid cylinder 4.
When the positioning pin 52 of the indexing table 47 is moved to the processing position on the column L side by the operation of 9, the positioning pin 52 of the indexing table 47
The circular protrusion 13 of the pallet 5 fits into the bin hole 5c of the pallet 5, and the circular protrusion 13 of the pallet 5 fits into the guide groove 53 of the indexing table 470. After the pallet 5 is fixed at the machining position, the index table 47 is rotated by a predetermined angle, and the workpiece W on the pallet 5 is subjected to elevation machining by the upper tool. 47 is rotated again and returned to the original phase.

In the above structure, front and back pallet guide rails 3.
4 unit guide rails 3A, 3B, 3C13D and 4
A pallet 5 is arranged at each of A, and an intermediate guide plate 15 and an end guide plate 16 are located at the front row side (left side in FIG. 1) of the shirttle guide rail 7 located at one end of the column l. One pallet 5 is placed on each of the intermediate guide plate 15 and the end guide plate 16 located at the front row side (right side in the figure) end of the shirttle guide rail 8 located at the upper and other end sides, And the guide rail 7 for shirt handle on one end side
Shirttles 6 are placed at the front row side end of the front row side and at the front row side end of the shirttle guide rail 8 on the other end side.

In this state, when the piston rods of the front row and front row side fluid cylinders 18 protrude, the end surface hole of the chuck 19 of the front row pallet feeding fluid cylinder 18 located at the upper left of the figure is fixed to the shuttlecock guide rail on the end side. Palette 5 on 7
This pallet 5 is fitted onto the push rod 11 of the intermediate guide plate 1.
5 and the end guide plate 16 onto the unit guide rail 3A at one end of the pallet guide rail 3 in the front row, and then sequentially feed the pallets 5 on the pallet guide rail 3 in the front row. The pallet 5 on the other end side of the pallet guide rail 3 of the row is pushed out onto the shuttle 6 on the other end side shuttle shuttle guide rail 8. On the other hand, the end face hole of the chuck 19 of the front row pallet feed fluid cylinder 18 located at the lower right of the figure or the pallet 5 on the shuttle guide rail 8 on the other end
The pallet 5 is pushed out onto the unit guide rail 4A at the other end of the front row pallet guide rail 4, and the pallets 5 on the front row pallet guide rail 4 are sequentially fed to the front row pallet guide rail 4. The pallet 5 on one end of the pallet guide rail 4 is pushed out onto the shuttle 6 on the one end shuttle guide rail 8. Next, the shuttlecocks 6 on the one end side and the other end side are respectively driven via the transmission chains 8a of the guide rail 7 for the shuttlecock on the one end side and the guide rail 8 for the shuttlecock on the other end side, and the shuttlecocks 6 on the one end side are driven in the front row. Pallet 5 pushed out from pallet guide rail 4
to the front row side, and the pallet 5 pushed out from the other end side shirttle 6 or the front row pallet guide rail 3 to the front row side. After handing it over to department information board 16,
It will be returned to its original state. When the pallet 5 is transported, the pallet 5 is pushed by the two circular protrusions 13 at the center of the lower surface or the shuttlecock 5, and slides on the circular protrusions 13 at both ends or the grooved rails 16.

In this embodiment, the front surface processing station 2A is followed by an inversion station 2B, a back surface processing station 2C, an inversion processing station 2A, an elevation processing station 2D, and an inversion processing station. Since the John 2B and the surface processing station 2A are arranged in this order, when the pallet 5 is sent from the surface processing station 2A to the first reversing station 2B, the hollow drum 22 of this reversing station 2B rotates 180 degrees and the pallet 5 is rotated 180 degrees. 5 is turned over, and this turned over pallet 5 is sent to the unit guide rail 3C of the back surface processing station 2C, where the unit guide rail 3C is moved to a processing position and the back surface is processed.

When this back surface processing is completed, the pallet 5 is returned to the transport position, and the next pallet 5 is sequentially fed.
The pallet 5 is sent from the back processing station 2C to the hollow drum 22 of the next reversing station 2B, and by rotating this hollow drum 22 90 degrees, the pallet 5 in the hollow drum 22 is vertically erected, and the pallet 5 is machined. Object W or facing the front. Then, as the next pallet 5 is sequentially fed, the vertically erected pallet 5 is transferred to the unit guide rail 3D on the indexing table 47 of the elevation processing station 2D, and then the unit guide rail 3D is processed. After being moved to the position, the indexing table 47 is rotated by a set angle to perform a predetermined elevation machining, and then the indexing table 47 is returned to its original position, that is, the unit guide rail 3
D is oriented horizontally, and this unit guide rail 3D is further returned to the transport position. Subsequently, the pallets 5 are sequentially fed, and the pallets 5 on the indexing table 47 are sent to the hollow drum 22 of the next reversing station 2B, and by rotating this hollow drum 22 by 90 degrees, the pallets 5 or the workpieces W are turned upward. The pallet 5 is returned to its normal position, and is then sent to the unit guide rail 3A of the next surface processing station 2A as the pallet 5 is sequentially fed.

(Effect of the Invention) This invention provides a method for reducing the size of the front and back sides of a horizontally long column.
- A large number of processing units are arranged on each surface, and a large number of processing units are arranged along the rectangular guide rail surrounding the column, which consists of guide rails for front and back pallets along the column and guide rails for shuttles connecting both ends at right angles. The workpieces on the pallet are sequentially processed by the above-mentioned machining units while the pallet is circulated in one direction, so it is easy to change the blades, and there is no need for the operator to change the blades. There is no need to provide extra space, and the installation can be done in a smaller area. When feeding pallets using the pallet guide rails on the front and back sides of the column, a large number of pallets are arranged in abutting fashion, and the pallet at one end is pushed by a predetermined pitch (1). The pallet at the other end is pushed out onto the shuttle guide rail, and the pushed out pallet is conveyed by the shuttle to the end of the pallet guide rail on the opposite side, which simplifies the pallet feeding mechanism. When the pallet is positioned on the guide rail for the shuttlecock, the pallet is resting on the shuttlecock, so
Pallets can be easily attached and detached, and pallets can be quickly replaced when changing lots. In this invention, the pallet guide rail is formed by arranging a large number of unit guide rails with the same pitch as the processing station arrangement pitch, and the processing station includes a reversing station, a back processing station, and a normal surface processing station. and the elevation processing station, and at the reversing station, the unit guide rail is rotated 9
It is formed to be rotatable by an integral multiple of 0 degrees, and the elevation processing station is equipped with an indexing table that is rotatable around a horizontal axis perpendicular to the transfer direction, and a unit guide rail is provided on this indexing table. , the above surface processing station,
By appropriately arranging the reversing station, the back processing station, and the elevation processing station, not only surface processing, but also back processing and elevation processing can be performed continuously.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an embodiment of the present invention, Fig. 2 is a plan view of a pallet of a surface processing station, and Fig. 3 is a plan view of the pallet of the surface processing station.
-■ line sectional view, Figure 4 is an enlarged plan view of the lower left part of Figure 1,
Fig. 5 is a sectional view taken along the line ■-v in Fig. 4, Fig. 6 is a plan view of the reversing device of the reversing station, Fig. 7 is a front view of Fig. 6,
Fig. 8 is a plan view of the pallet in the back processing station, Fig. 9 is a sectional view taken along the line IX-IX in Fig. 8, and Fig. 10 is a partially cutaway view of the indexing table in the elevation processing station. FIG. 11 is a front view of FIG. 10. l-Column, 2 people - Surface processing station, 2B/Reversing station, 2C: Back processing station, 2D: Elevation processing station, 3.4: Pallet guide rail,
3A, 3B, 3C, 3D, 4A unit guide rail, 5: pallet, 6: shirttle, 7.8: guide rail for shirttle, 22 hollow drum, 47 index table. Patent applicant Kyokuyo Kogyo Co., Ltd. Agent Patent attorney Yoshi 1) Ryo Tsukasa Figure 11

Claims (1)

[Scope of Claims] [1] A large number of processing units are arranged on both the front and back sides of a horizontally long column, and pallet guide rails for guiding a pallet for mounting a workpiece are provided on both the front and back sides of the column, and the column Shuttle guide rails are provided at both ends of the column for transporting the pallet transport shuttle at right angles to the pallet guide rail, forming a rectangular pallet passage around the column, and above the pallet guide rail. In a transfer machine in which a large number of pallets arranged in a row are sent at a constant pitch to perform desired processing by a processing unit on both the front and back surfaces of the column, the pallet guide rail fits into grooves on both sides of the pallet, It is formed by arranging multiple sets of unit guide rails, each consisting of two unit guide rails that are shorter than the feed pitch, at a pitch equal to the feed pitch, and the processing unit moves the workpieces on the pallet surface up and down the pallet surface. A surface processing unit for processing the pallet surface facing downwards, a back processing unit for processing the pallet surface facing downward, and a pallet with the front surface facing sideways can be processed by rotating it at any angle around a horizontal axis perpendicular to the transport direction. The surface machining unit and the back machining unit each include a set of unit guides. The rails are arranged horizontally, and in the above-mentioned elevation processing unit, a set of unit guide rails is provided on the surface of an indexing table rotatably provided around the above-mentioned horizontal axis, and in the above-mentioned reversing unit, a set of unit guide rails is provided in the above-mentioned transfer direction. 90 around the axis
A transfer machine characterized in that a hollow drum is provided which is rotated by an integral number of degrees, and two sets of unit guide rails are fixed within the hollow drum with a phase difference of 90 degrees.