JPS6171934A - Pallet for workpiece transfer - Google Patents

Abstract

PURPOSE:To prevent workpieces from position difference by firmly clamping them by providing a pallet for transferring workpieces in a transfer machine with a mechanism to push support bars down by cams and springs. CONSTITUTION:A pallet for transferring workpieces is provided with a base plate 45 having enough space to carry the workpiece 1 and 6, holder fixtures 46, 47, and 48 fixed on the base plate 45 and having cavity to accommodate workpieces 1 and 6, and a plurality of support bars 63, 78, 93, and 108 which are so supported as to be rotated and vertically moved freely penetrating the base plate 45 and are always pushed downward by return springs coiling around each of them forming grooves to be engaged at the lower end and also forming a cam hole penetrating each of them at the intermediate section in the cross direction to the axis. In addition, the transfer pallet is provided with presser fixtures 64, 94, and 109 for clamping workpieces 1 and 6 by forcing to pressure the holder fixtures 46, 47, and 49 from the top and cams 71, 86, 101, and 116 for pushing the support bars down by pushing pressure sections having the taper face at the end into the cam holes of the support bars.

Description

[Detailed description of the invention] This invention has a plurality of processing stations, and each processing station is equipped with a dedicated processing machine for performing predetermined processing. The present invention relates to a pallet used to transport workpieces to each processing station in a transfer machine that sequentially transports workpieces to processing stations for processing.

The processing equipment called a transfer machine has multiple processing stations, and each processing station is equipped with a dedicated processing machine that performs the specified processing in the order of processing, and the workpieces are transferred one by one using a transfer bar. This is a device that continuously transports products to various processing stations and performs predetermined processing at each processing station to form products.

This kind of processing equipment has two methods for transporting the workpiece from one processing station to the next processing station: the method of directly transporting the workpiece with a transfer bar, and the method of placing the workpiece on a pallet and transferring the pallet to the transfer bar. Large parts such as cylinder blocks are transported directly, while small parts such as connecting rods are transported using pallets.

By the way, when transporting workpieces using a pallet, a clamp mechanism for positioning and holding the workpieces is usually provided on the -L side of the pallet, and an appropriate workpiece carrying means is used to transport the workpieces to the pallet.
Workpieces are supplied to the machine, positioned, and processed at each processing station in a controlled manner.

When a workpiece is transported using a bullet, chips and the like generated during machining may remain and accumulate on the barre/throat, causing problems in machining. Therefore, in order to remove the chips that accumulate on the burrs, measures are taken such as spraying a large amount of cutting oil or compressed air to remove the chips, or inverting the pallet to allow the chips to fall. Therefore, the clamp mechanism provided in the pallet no. 1 must have a function to securely hold the workpiece.

In addition, when performing high-precision machining on a workpiece, it is necessary to clamp the workpiece in the same state from the start of machining to the completion of machining, and not only during machining but also when transporting the workpiece from one machining station to the next machining station. It is also necessary to prevent the workpiece from being unclamped, and the pallet clamping mechanism must have the ability to firmly clamp the workpiece in the same state without being affected by external influences once the workpiece is clamped.

Rule-11-1 Solution n Large Y B and L D This invention has a substrate large enough to place a workpiece,
A holding fitting is fixed on the substrate and has a recess for accommodating the workpiece, and the holding fitting is supported through the substrate so as to be rotatable and movable up and down. A plurality of support rods each having an engagement groove and a cam hole formed in the middle in a direction perpendicular to the axis, and a plurality of pressers pivotally attached to the upper end of the support rods to press the workpiece against the holding fitting. and a plurality of cams that are slidably provided on the lower surface of the substrate, have a tapered surface that slopes upward to the tip on the lower surface of the tip, and insert the tip into the cam hole to pull the support rod downward. Configure the pallet with the presser foot and store the workpiece inside the holding fitting with the presser foot released from the holding fitting.
After this, rotate the presser foot and place it above the workpiece,
A return spring and a cam are used to pull down the presser foot and press the workpiece.

Embodiment FIGS. 6 to 8 are drawings showing an example of a processing device that performs processing using a pallet according to the present invention. A processing device for forming a hole is shown.

The connecting rod (1) has a large end (1) as shown in Figure 9 (a) and (b).
Assembling holes (2) (2) are formed penetratingly at both ends of a), a counterbore (3) (3) is formed at one end of the assembling holes (2) (2), and the large end ( A lock groove (5) is formed on the inner surface of the opening (4) of (la). In addition, as shown in Figure 10 (a) and (b), the cap (6) has mounting holes (T) (7) facing the mounting holes (2) (2) of the articulating rod (1) on both sides. ) and a counterbore (8) at one end of the assembly hole (7) (7).
(8), and a lock groove (9) is formed on the inner surface of the opening (6a).
) is formed.

The connecting rod (1) and the cap (6) are placed and fixed on the barre 7) (10) as a pair and processed.

For example, the processing device has a plurality of work stations (a) to (k).
), and at the first reversing station (a), a pallet (10) to which a pair of connecting rods (1) and a cap (6) are fixed is reversed, and a pair of connecting rods (1) and a cap (6) are fixed thereon. 6)
The reversing mechanism (11) that places the
) is provided. The first processing station (b) has assembly holes (2) (2), (7) from the joint end side of the connecting rod (1) and cap (6) on the right side across the barrette (10).
Drill (12) to drill approximately half of (7) (12
) - The first processing machine (13) is arranged, and the counterbore (3) of the connecting rod (1) and the can knob (6) is placed on the left side.
, (8) Counterbore cutter (14) forming (8)
(14) A second processing machine (15) having - is arranged. In the second processing station (C) there is a ball l-(1
On the right side across 0) is the joint end of the connecting rod (1) and camp (6) assembly hole (2) (2), (7) (7)! II
Chamfering drill for chamfering the end face (16) (16)
- Place the third knee (17) e with the counterbore (3) of the articulated rod (1) and camp (6) on the left side (
3), (8) Assembling holes (2) (2), (7) from the (8) side
(7) A fourth processing tJll (19) having a drill (18) (18)- is arranged. In the third processing station (d), there is an articulating rod (1) and a lock groove (5) of the cap (6) on the right side with the barrel l-(10) in between.
(9) Plain cutter to form (20)
The fifth processing machine (21) with (20) is arranged, and the assembly hole (2) for the continuous V rod (1) and cap r6) is placed on the left side (2).
), <7) A sixth addition having a chamfering drill (22) for chamfering the counterbore side end face of (7) (22)・-
ta (23) is placed.

The fourth processing station (e) has a plain cutter (24) on the right side across the pallet (10) that chamfers the lock grooves (5) and (9) of the articulated rod (1) and camp (6).
A seventh processing machine (25) having (24) is arranged, and a counterbore cutter (26) (261-) for finishing the counterbore (3) (3), (8) (8) is installed on the left side. 8th machining IM! (27) is arranged.The 5th machining station (f) has an assembly hole (2) for the connecting rod (1) and cap (6) on the right side of the pallet (10). (2),
(7) Core drill (2B) that penetrates (7) (2
B) A ninth processing machine (29) having - is arranged. The sixth processing station (g) has assembly holes (2) (2),
(7) Reamer (30) that finishes (7) with high precision (
A first O processing machine (31) having a diameter of 30L-= is arranged. The second reversing station (h) has a pallet (10
) is reversed and the connecting rod (1) and camp (6) placed on the bottom side are returned to the top side of the baren (10). The cleaning station (1) is equipped with a transfer mechanism (35) that transfers the pallet (10) on which the processed articulated rod (1) and camp (6) are fixed onto the return conveyor (34), and the alignment station N)
A take-out mechanism (36) is provided for taking out the pallet (10) returned by the return conveyor (34) from the return conveyor (34) and sending it to the next process. At the loading/unloading station (k), the processed connecting rods (1) and caps (6) are carried out from the baren (10), and the unprocessed connecting rods (1) and caps are transferred to the empty pallet (10). A loading/unloading mechanism (37) for loading the cap (6) is provided.

Furthermore, a box-shaped jig (38) for holding the pallet (10) is provided in the first processing station (b) to the sixth processing station (g), and a top plate of the jig (38) is provided. (3
8a) is provided with a hydraulic cylinder (39) and a positioning mechanism (40) for lifting and positioning the pallet (lO) to an upper processing position.

Furthermore, a ladder-like transfer bar (41) for supporting and conveying the barren (10) from the first reversing station (a) to the second reversing station (h)
) is provided so as to be movable back and forth, and one end thereof is connected to the piston rod (42a) of the pallet conveying cylinder (42). Therefore, the transfer bar (41) is moved by the expansion and contraction movement of the pallet conveying cylinder (42) to convey the pallet (10). Note that the one lance fiber (41) is a jig (38) provided in the first machining station (b) to the sixth machining station (g).
The telescopic stroke of the pallet transport cylinder (42) is set to a length that extends the pallet (10) from one machining station to the next. (10) is sent one station ■.

Also, near the loading/unloading station (k), there is a carry-in conveyor (43) that brings in unprocessed connecting rods (1) and caps (6), and processed connecting rods (1) and camps (6).
) is provided with an unloading conveyor (44) for unloading.

The above-mentioned processing device then processes the unprocessed articulated rod (1) and cap (6) brought in at the loading/unloading station (k).
is taken out from the carry-in conveyor (43) by the carry-in/take-out mechanism (37), placed on an empty pallet (10), and fixed.

When the articulated rod (1) and the cap (6) are mounted on the pallet (10), the pallet (10) is sent to the first reversing station (a), where the reversing mechanism (11) (10) is reversed, the connecting rod (1) and the camp (6) are placed on the underside of the pallet (10), and the pallet (10) is placed on the transfer bar (41).

Next, the pallet III [feeding cylinder (42) is shortened and the transfer bar (41) is advanced, and the pallet (
10) to the jig (38) of the first processing station (b)
Transport inside. After this, a hydraulic cylinder (39) and a positioning mechanism (40) provided on a jig (38) are used to
0) and position it, then move the first processing machine (13
) and the second processing machine (15) operate, and the drill (12)
) and counterbore cutter (14) to attach the assembly holes (2) (2), (7) and counterbore (3) (3) to the connecting rod (1) and camp (6). , (8) form (8). During this processing, the pallet transport cylinder (42) is extended and the transfer bar (41) is moved backward. After finishing the processing, the pallet (10) is lowered and placed on the transfer bar (41). After this, the palette (1
0) is transported into the jig (38) of the second processing station (C) by the pallet transport cylinder (42) and transfer bar (41). Then, at the second processing station (C), the chamfering drill (16) of the third processing machine (17) is
) (16)- and the drill of the fourth processing machine (19) (
1B) (1B), - assembly holes (2) (2), (7
) (7), and the remaining half is drilled. Transfer the pallet (10) from the second machining station (C) to the third machining station (d) using the transfer bar ( 41), and here the plane cutter (20) (20) of the fourth processing machine (21) and the chamfering drill (22) (22) of the sixth processing machine (23) are transferred.
- form locks 1 (5) and (9), and assemble holes (
2) Chamfer the remaining end faces of (2), (7) and (7). Next, the ballet (10) is transferred to the third processing station (
d) to the fourth processing station (e) by a transfer bar (41), where the seventh processing li (2
5) plain cutter (24) (24) and counterbore cutter (26) (26L-) of the 8th processing machine (27)
Chamfer and counterbore lock grooves (5) and (9) at (3)
(3), (8) Perform the finishing steps in (8). Next, Bareso)
(10) from the fourth processing station (e) to the fifth processing station (f) using the transfer bar (41)
The core drill (29) of the 9th processing machine (29) is
28) (Assembly holes (2) (2), (7) at 28m-
(7) is formed into a desired shape. Next pallet (10)
is transported from the fifth processing station (f) to the sixth processing station (g) by a transfer bar (41), where the reamer (30) of the tenth processing machine (31) (
30) - Finish the assembly holes (2) (2), (7) (7).

In this way the articulation 411 (1) and the cap (6)
When the processing is completed, the pallet (10) is transferred from the sixth processing station (g) to the second reversing station (
h) using the transfer bar (41), where the pallet (10) is reversed using the reversing mechanism (32) and the articulated rod (1) and cap (6) are placed on the top side of the pallet (10). Then, the pallet (10) is transported to the cleaning station entrance). At the cleaning station (1), the articulated rod (1) and cap (6) are cleaned to completely remove chips, etc., and then the pallet (10) is lowered by the take-out mechanism (35) onto the return conveyor (34). The pallet (lO) is transported to the alignment station (j) by the return conveyor (34), where the pallet (10) is taken out from the return conveyor (34) by the take-out mechanism (36) and raised. and transport it to the loading/unloading station (k). Then, at the loading/unloading station (k), the pallet (
release the articulating rod (1) and cap (6) on lO);
The loading/unloading mechanism (37) takes out the processed joint rod (1) and cap (6) from the bullet (10), places them on the loading conveyor (44), and carries them out.
Take out the unprocessed connecting rod (1) and cap (6) from 43) and place them on the empty pallet (10) J-. Thereafter, the above-described operations are repeated to perform processing.

As mentioned above, the barrel (10) that holds the connecting rod (1) and the cap (6) has the structure shown in FIGS. 1 to 5. In the same figure, (45) is the connecting rod (1) on the board.
) and camp (6) are formed of a flat plate large enough to be assembled, and on the top surface there is an articulated rod (1) and a cap (
6) Holding fittings (46) (47) for housing and holding
(48) is provided. In addition, the board (45) has window holes (49) (
50), (51) and (52) were established. (53
) (54) is a reference hole for positioning.

The holding fitting (46) has a large end (1a) of the connecting rod (1).
A recess (55) is formed to accommodate and hold the large end (1a) on one side and on both sides. Further, the holding fitting (47) is formed with a recess (56) for accommodating and holding the small end (1b) of the connecting rod (1). In addition, other holding fittings (4
8) accommodates and holds the cap (6).
A recessed portion (57) is formed to restrain three sides, one side and both sides.

(58) is a press pin slidably provided in the holding fitting (46), which is normally pressed toward the recess (55) by the spring (59) and presses the large end (1a) of the articulating rod (1). Press the sides. (60) is a press pin slidably provided in the holding fitting (48), and is constantly pressed by a spring (61) toward the fourth part (57) to press the side surface of the cap (6).

(62) is a first clamp mechanism provided between two holding metal fittings (46) (4B), and is composed of a support rod (63) and a presser metal (64). The support rod (63) has a flat upper end (63a) and an engagement groove (65) on the lower end surface.
), and a cam hole (
66) is formed.

This support rod (63) supports the board (45) so that it can rotate and move up and down. The spring (68) is compressed and bloomed between the two. The presser foot (64) has pressing surfaces (6
4a ) (64b), and a through hole (69) longer than the flat part (63a) of the support rod (63) is formed in the middle part.

This presser foot (64) connects the through hole (69) to the support rod (63).
) is inserted through the flat part (63a) of the main body, and is pivotally attached to the pivot (70) so as to be swingable. (71) is the support rod (63)
A retaining flange (72) is integrally formed at the rear end, and a flat pressing part (74) is formed at the tip with a tapered surface (73) whose lower surface slopes upward toward the tip. It is. This cam (71) has its tip slidably inserted into a housing (75) attached to the lower surface of the substrate (45), and the pressing part (74) is inserted into a cam hole ( 66), and a spring (76) is compressed and interposed between the cam (71) and the housing (75). Therefore, the cam (71) is always pressed forward by the spring (76), and the pressing part (74) is pushed into the cam hole (66).
) and press down the support rod (63) with the taber surface (73), thereby lowering the presser foot (64),
Press the large end (1a) of the connecting rod (1) and the side of the cap (6) with the presser foot (64).

A second clamp mechanism (77) is provided on the outside of the holding fitting (46) of the substrate (45), and is composed of a support rod (78) and a presser metal (79). The support rod (78) has a flat upper end (78a) and an engagement groove (80) on the lower end surface.
), and a cam hole (
81) is formed. This support rod (78) is connected to the substrate (4
The sleeve (82) and support rod (5) are supported rotatably and vertically movably through the sleeve (82) and are attached to the base plate (45).
The spring (83) is compressed and bloomed between the flange (78b) formed on the flange (78b). Presser foot (79)
Forms pressing surfaces (79a) (79b) on the lower surfaces of both ends, and has a flat part (78a) of the support rod (78) in the middle part.
) A 1 m through hole (84) with a longer length is formed.

This presser foot (79) connects the through hole (84) to the support rod (78).
) is inserted through the flat part (78a), and is pivotally attached to the pivot (85) so as to be swingable. (86) is a cam that lowers the support rod (78), and has an engagement flange (87) integrally formed at the rear end, and a lower surface (88) formed at the tip with an upward slope toward the tip. A flat pressing portion (89) is formed. This cam (86) is connected to the bottom surface t of the substrate (45).
The tip is slidably inserted into the attached housing (90), the eye and the pressing part (89) are opposed to the force J2 hole (81) formed in the support rod (78), and the cam (86 ) and the housing (90) to compress a spring (not shown). Therefore, the cam (88) is pressed by the spring, and the pressing part (88) enters the cam hole (81), and the tapered surface (88) pushes down the support rod (78), thereby pressing the presser foot. (79) is lowered, and the large end (1a) of the connecting rod (1) is connected to the base plate (4) using the presser foot (79).
5) Press the auxiliary stand (91) attached to the auxiliary stand (91).

A third clamp mechanism (92) is provided outside the holding fitting (48) of the substrate (45), and is composed of a support rod (93) and a presser foot (94). The support rod (93) has a flat upper end (93a) and is engaged with the lower end surface a (9
5), and further a cam hole (96) is formed in the intermediate portion perpendicular to the axis. This support rod (93) is connected to the substrate (
45) to be supported so as to be rotatable and movable up and down,
A splice (98) is compressed and interposed between the sleeve (97) attached to the base plate (45) and the flange (93b) formed on the support rod (93). Presser foot (94
) forms pressing surfaces (94a) (94b) on both lower surfaces, and has a flat upper end portion (94a) of the support rod (93) in the middle portion.
3a) A longer through hole (99) is formed.

This presser foot (94) connects the through hole (99) to the support rod (93).
) and is pivotally attached to the pivot (100) so as to be swingable. (101) is the support rod (93
) with an engaging flange (102) at the rear end.
are integrally formed, and a flat pressing portion (104) is formed at the tip end with a tapered surface (103) whose lower surface slopes upward toward the tip. This cam (101) has its tip slidably inserted into a housing (105) attached to the lower surface of the substrate (45), and the pressing part (104') is inserted into a cam hole formed in the support rod (93). (96),
A spring (not shown) is compressed and interposed between the cam (101) and the housing (105). Therefore, the cam (l old) is then pressed by the spring and the pressing part (10
4) enters the cam hole (96) and presses down the support rod (93) with the tapered surface (103), thereby pressing down on the presser foot (94).
) is lowered, and the presser foot (94) presses the cap (6) and the auxiliary stand (106) attached to the base plate (45).

(107) is a fourth clamp mechanism provided between the holding metal fittings (47) and (4B), and is composed of a support rod (10B) and a presser metal (109). The support rod (1011)
The upper end portion (108a) is formed flat and is attached to the lower end surface.
A cam hole (111) is formed in the intermediate portion perpendicular to the axis. This support rod (10
B) is a sleeve (45) that penetrates the board (45) and supports it so that it can rotate and move up and down, and is attached to the board (45).
112) and the flange (1) formed on the support rod (10B).
08b), a spring (113) is compressed and interposed between the two.

The presser foot (109) has pressing surfaces formed on the lower surfaces of both ends, and a through hole (114) longer in length than the upper end flat part (108a) of the support rod (10B) in the middle part. This presser foot (109) supports the through hole (114) and the holding rod (10
8) through the flat part (108a) of the pivot (115).
It is pivoted so that it can swing freely.

(116) is a cam that lowers the support rod (10B),
An engagement flange (117) is integrally formed at the rear end, and a tapered surface (11B) whose lower surface slopes upward toward the tip.
A pressing portion (119) is formed. This cam (116) has a tip slidably inserted into a housing (75) attached to the lower surface of the substrate (45), and a pressing portion (
119) into the cam hole (10B) formed in the support rod (10B).
111), and the cam (116') and housing (
75), a spring (116a) is compressed and interposed between the two. Therefore, the cam (116) is connected to the spring (116a).
), the pressing part (119) is pressed into the cam hole (11
1,) and attach the support rod (1) at the tapered surface (11B).
08), thereby lowering the presser foot (109), and using the presser foot (109) to press down the small end (1) of the connecting rod (1).
b) Press the center part of the cap (6).

(120) is a fifth clamp mechanism provided in front of the holding metal fitting (47), and the lower end of the fixed arm Cl22 is attached to the lower end of the support bracket (121) coupled to the lower surface of the board (45) with the pivot (121a). The upper end of the fixed arm (122) is connected to the window hole (5) formed in the base plate (45).
0) Project upward and face the small end (1b) of the connecting rod (1).

(123) is a pressing rod that is slidably provided in the substrate (45), has a cam hole (124) formed in the middle part, and presses the back surface of the fixed arm (122). (125) is a cam that moves the pressing rod (123') back and forth, and has a flat pressing part (127) having a tapered surface (126) at the upper end and an engagement flange (12B) at the lower end. . This cam (125> is slidably inserted into a housing (129) attached to the lower surface of the board (45), and the upper end pressing portion (127) is inserted into the cam hole (129) of the pressing rod (123).
4), and then insert the housing (129) and cam (
125>, a spring (130) is compressed and intercropped. Therefore, the cam (125) is connected to the spring (130)
The pressing rod (123) is pushed out by the tapered surface (126) raised by the elasticity of the fixed arm (
122) to press the small end (1b) of the connecting rod (1).

(131) is a sixth clamp mechanism provided in front of the holding fitting (48), and the lower end of the fixed arm (133) is pivoted (134') at the lower end of the support bracket (132) coupled to the lower surface of the board (45). ), and the upper end of the fixed arm (133) projects upward from a window hole (52) formed in the substrate (45) and faces the cap (6).

(135) is a pressing rod that is slidably provided in the base plate (45), and has a cam hole (136) formed in the middle part, and presses the back surface of the fixed arm (133). (137) is a cam that moves the pressing rod (135) back and forth, and has a flat pressing part (139) having a tapered surface (138) at the upper end and an engagement flange (140) at the lower end. . This cam (137) is slidably inserted into a housing (141'') attached to the lower surface of the board (45), and the upper end pressing portion (139) is inserted into the cam hole (139) of the pressing rod (135).
6), and then insert the housing (141) and cam (1
37) and a spring (142) is compressed and intercropped. Therefore, the cam (137) is raised by the elasticity of the spring (142) and pushes out the pressing rod (135) on the tapered surface (13B), thereby causing the fixed arm (
133') to press the cap (6).

(10) is the large end (1) of the connecting rod (1)
1a) is accommodated in the recess (55) of the holding fitting (46), the small end (1b) is accommodated in the recess (56) of the holding fitting (47), and the presser foot of the first clamp mechanism (62) is (6
4) pressing surface (64a) and the second clamp mechanism (7)
Press the large end (la) of the articulated rod (1) from above with the pressing surface (79b) of the presser foot (79) of 7), and press the fourth
Press the small end (lb) of the articulated rod (1) from above with the pressing surface (109a) of the presser foot (109) of the clamp mechanism (107), and further fix the fifth clamp mechanism (120'). Attach the connecting rod (1) to the arm (122) using the metal fitting (4).
6), the connecting rod (1) is pressed against the pallet (1).
0). Also, the four parts (57) of the holding fitting (48)
The camp (6) is accommodated in the first clamp mechanism (
62) of the presser foot (64), the presser foot (94a) of the presser foot (94) of the third clamp mechanism (92), and the presser foot (109) of the fourth clamp mechanism (107). At the pressing surface (109b) of the cap (6
) from above and the sixth clamp mechanism (13
The camp (6) is fixed to the pallet (10) by pressing the cap (6) against the holding fitting (48) using the fixing arm (133) of 1).

The first clamp mechanism (62) and second clamp mechanism (77), third clamp mechanism (92), fourth clamp mechanism (107), and fifth clamp mechanism (120) of the pallet (10). , the sixth clamp mechanism (131
) has a structure shown in FIGS. 11 to 13. That is, in the same figure, (143) is a box-shaped box frame with an open top surface, and a lift cylinder (144) is fixed upright on a jig surface plate (not shown).
) is connected to the piston rod (144a) of the lift cylinder (144), and is moved up and down by the expansion and contraction movement of the lift cylinder (144).

(145) are the first to fourth parts provided on the pallet (10).
Clamp mechanisms (62), (77), (92), (10
7) each support rod (63), (78), (93), (10
A rotary drive unit that rotates the box frame (1).
43) has a lifting cylinder (146) at the bottom (143a).
The piston rod (146a) is inserted into the box frame (143), and the base plate L (147) is integrally attached to the upper end of the pinton rod (146a).

The base plate (147) has a box frame (14
3) Support rods (63), (7th), (93), ( 10B) and the rotating shaft (14B) (149) (150
) (151) is rotatably fixed upright, and each rotating shaft (148) (149) (150) (15
1) with support rods (63), (78), (93), (108
) engagement grooves (65), (80), (95), (110)
(152>u5a) (1
54>(155>). (156) is a semicircular drive gear connected to the rotating shaft (14B);
57'') is the first sector gear coupled to the rotating shaft (149), (15B) is the second sector gear coupled to the rotating shaft (150), (159) is the driving gear (156) and the second sector gear A driven gear provided between the gear (158) and both gears (1
56) It meshes with (15B). (160) is a link connecting the drive gear (156) and the rotation lever (161) coupled to the rotation shaft (151). (18
2) is a drive gear (156) and a first sector gear (157)
Spur teeth (163) (164) are carved on both sides, and one spur tooth (16
3) meshes with the drive gear (156), and the other spur tooth (
164) meshes with the first sector gear (157).

(165) is a rotary cylinder mounted on a bracket (147a) that is upright molded on the base plate (147), and its piston rod (165a) is mounted on a rack (162).
).

Therefore, the rotating cylinder (165) expands and contracts to move the rank (
162) is moved back and forth, the drive gear (156) and the first sector gear (157) meshing with the rank (162) are moved back and forth.
') rotates to rotate the rotating shaft (14B) (149), and at the same time the driven gear (156) rotates the driven gear (1
59) to rotate the second sector gear (158) to rotate the rotating shaft (150) and the link (160).
and a support rod (63) that rotates the rotating shaft (151) via the rotating lever (161) and engages with the engaging protrusions (152) to (155) of each of the rotating shafts (14B) to (151);
Rotate (78), (93), and (10B).

(166”) is the second, third and fourth clamp mechanism (77”)
), (92), (107) cams (86), (101)
, (116), and a drive cylinder (116) is attached to the side (143b) of the box frame (143).
167), insert its piston rod (167a) into the box frame (143), and attach a support plate (16B) to the tip of the piston rod (167a).
) is installed. Coupling frames (169) (170) (171) are fixed to the support plate (168) facing the cams (86) (101) (116), and each engagement frame (169) (170) (171)
) U grooves (172) (173) (1
Cam (86) (101) (11B
) is housed in the engagement flange (87) (102)
It is engaged with (117). (175) (17
6) is the side part (143b) of the box frame (143)
A guide rod is slidably provided through a bearing (177) (17B), and its inner end is supported by a support plate (16B).
) to guide the support plate (16B) and move it parallel to the side (143b).

(179) is a pressing cylinder provided on the side (143b) of the box frame (143) in correspondence with the engagement frame (169), and its piston rod (179a) is connected to the box frame (143) and the support plate (168). )
is inserted into the engagement frame (169) so as to face the engagement flange (87) of the cam (86). (1
80) is a pressing cylinder provided on the side (143b) of the hook frame (143) in correspondence with the engagement frame (170), and the piston rod (180a) is connected to the box frame (143) and the support plate (168). The cam (1) is inserted into the engagement frame (170) through the
01) to face the engagement flange (102). (18
1) is a suppression cylinder that corresponds to the engagement frame (171) and is provided in the (11 part (143b)) of the box frame (143), and its piston rod (181a) is connected to the box frame (143) and the support plate (16B). ) is penetrated and inserted into the engagement frame (171), and is opposed to the engagement flange (117) of the cam (118).

The first driving section (166) is a driving cylinder (167).
) is shortened, the holding frame (169) (170) (17
1) engaged with the cams (86) (101) (
116) with support rod (7B) (93) (108)
Pull it out. Furthermore, when the drive cylinder (167>) extends, the engagement frame (169') (170) (171) moves forward via the support plate (16B), and then each of the pressing cylinders (179) (180") (1
81) is extended, the piston rod (179a)
(180a) Cam (86) at (181a)
(101) and (116) respectively.
B) (93) Push into (10B).

(182) is the cam (71) of the first clamp mechanism (62).
) is the second drive unit that pushes and pulls the box frame (1
A drive cylinder (183) is attached to the side (143c) of the piston rod (183), and its piston rod (183a) is inserted into the box frame (143).
A support plate (184) is attached to 183a).

An engagement frame (185) is fixed to the support plate (184) so as to face the cam (71), and the cam (71) is inserted into the U groove (186'') formed on the end surface of the engagement frame (185). ) is accommodated and engaged with the engagement flange (72). (187) (18B) is the box frame (
Bearing (189) (1
A guide rod is slidably provided through the guide rod (90), the inner end of which is connected to the support plate (184), and guides the support plate (184) to move parallel to the side (143c). (191) is the engagement frame (185)
The side part (14) of the box frame (143) corresponds to
3c), the piston rod (
191a) through the box frame (143) and support plate (184) to connect the engagement frame (185).
the cam (71) so that it faces the engagement flange (72) of the cam (71).

The second drive unit (1B2) includes a drive cylinder (183
) is shortened, the engagement frame (185) is pulled through the support plate (184), and the engagement frame (185) is pulled through the support plate (184).
When the cam (71) engaged with the cam (71) is pulled out from the support rod (63), and the drive cylinder (183) is extended, the retaining frame (1) is removed via the support plate (184).
85) retreats and then the pressing cylinder (191) extends, the piston rod (191a) moves the cam (7
1) and push it into the support rod (63).

(192) is the fifth and sixth clamp mechanism (120) (1
The third drive unit pushes and pulls the cams (125) and (137) of the box frame (143).
Attach the lifting cylinder (193) to the box frame (143) and attach the piston rod (193a) to the box frame (143).
The piston rod (193a)
A support plate (194) is integrally attached to the upper end of the. On the support plate 1- (194), support brackets (195) and (196) are integrally fixed upright on both sides, and at the upper ends of the support brackets (195 and 196),
U-shaped retaining frame (197) (19B
) with their lower ends back to back to each other (199)
(200), and links (201) and (202'') are respectively attached to the intermediate portions of both engagement frames (197'') (19B). (203)
) is a swing cylinder attached to the support plate (194), and its piston rod (203a) is attached to the support plate).
(194) to protrude upward, and the link (201)
The base of (202) is connected. Therefore, when the swing cylinder (203) expands and contracts, the link (201) (
(202) through the engagement frame (197) (19B
') swings about the pivots (199) and (200), and engages with the engagement flanges (12B) and (140) of the corresponding cams (125 and 137) when standing up, respectively. (20
4) (205) A guide rod provided at the bottom (143a) of the box frame (143) via bearings (206) (207) so as to be movable up and down, the upper end of which is connected to the support plate (194); Support plate (1
94) to move parallel to the bottom (143a). (208) is a box frame (143) corresponding to the cam (125) of the fifth clamp mechanism (120).
A push-up cylinder is attached to the bottom (143a), and its piston rod (208a) is inserted into the interior through the bottom (143a), and a push-up member (209) is connected to the upper end. The push-up member (209) is arranged in the support bracket (195) by vertically movably penetrating the support plate (194), and forms an elongated part (210) in the vertical direction. ) to the axis (19
9) is inserted. Therefore, the push-up member (209) does not interfere with the pivot (199), and the push-up cylinder (
20B) is moved up and down by the telescopic action of the cam (125). (211) is a push-up cylinder attached to the bottom (143a) of the box frame (143) in correspondence with the cam (137) of the sixth clamp mechanism (131), and the piston rod (211a) is pushed up to the bottom (143a). is penetrated and inserted into the interior, and a push-up member (212) is connected to the upper end. The push-up member (
The support plate (212) is vertically movably passed through the support plate (194') and is disposed within the support platen (196), and forms an elongated part (213) in the vertical direction, with a pivot (213) attached to the elongated part (213). 200) is inserted. Therefore, the push-up member (212) is moved up and down by the telescoping action of the push-up cylinder (211) without interfering with the pivot shaft (200), and pushes up the cam (137) when raised.

The third drive unit (192) is a swing cylinder (203)
The engagement frame (197) (1
9B) stands up and engages with the engagement flange (12B) (140) of the cam (125>(137)), and then the lifting cylinder (193) is shortened, thereby causing the support plate (194) and the support bracket ( 195) (
196), the retaining frame (197) (19B) is lowered via the pivot (19'l') (200) to lower the cam (125) (137). Also, the lifting cylinder (193) and the pushing cylinder (208) (
When the push-up member (211) extends, the push-up member (210
) (212) to push up the cam (125>(137)).

The control mechanism described above is the loading/unloading station.

(k), which is the lift cylinder (144).
is in a shortened state, and the box frame (143) is on standby below the conveyance line of the pallet (10).

And the palette <lO) is a box frame (143)
When the lift cylinder (144
) extends and raises the box frame (143), and the pallet (
10), and clamp and fix the barrette (10) between the reference metals (214) and (215) waiting above, and at the same time lift the engagement frame (1) of the first drive part (166).
89) (170) (171) to U groove (172)
(173) (174) to engage with the cams (86) (101) (11B) of the second, third, and fourth clamp mechanisms (77) (92) (107), and the second drive The engagement frame (185) of the section (182)
) through the U groove (186) to the first clamp mechanism (62
) is engaged with the cam (71). After this, the drive cylinders (1B?) (183) of the first drive unit (166) and the second drive unit (1B2) are both shortened, and each engagement frame (169) (170) (171), (1
85) and move the cams (86) (101) (
116), (71) with support rod (7B) (93)
(10B), (63) cam holes (81) (96)
(111) and (66). Simultaneously with the operation of the first drive section (166) and the second drive section (182), the swing cylinder (203) of the third drive section (192) extends and moves the links (201) (202). The engagement frames (197) and (198) are raised to engage with the cams (125 and 137) of the fifth and sixth clamp mechanisms (120 and 131), respectively, and then the lifting cylinder (193) ) is shortened and the engagement frame (19
7) (19B) is lowered in the upright position, and the cams (125) and (137) are pressed against the pressing rod (123), respectively.
(135) from the cam holes (124) (13B) to free the fixed arms (122) (133).

Next, the lifting cylinder (146) of the rotary drive unit (145) extends and raises the Hespray (147),
This allows the rotating shaft (148) (149) (15
0) (151) and the engaging protrusions (152) (153) (154) (155) formed thereon are arranged above the support rod (63) (7B) (93)
(108) Engagement groove (65) (80) (9
5) Engage with (110) and continue to rise to lift support rods (63) (7B) (93) (10B). After this, the rotating cylinder (185) is extended, and the rack (162), the driving gear (156), the first sector gear (157), the driven gear (159), and the second
The rotating shafts (148) to (151) are rotated through the sector gear (158) and the link (160) to rotate each support rod (63).
) (7B) (93) (108) and presser foot (64) (79) (94) attached to the upper end of support rod (63) (7B) (93) (108)
(109) and rotate the pallet (10) holding bracket (
46) (47) (4B) Release from above.

In this state, the retaining metal fittings (46) (46) of (10)
7) The connecting rod (1) is supplied upward, and the holding metal fittings (48
), when the cap (6) is supplied onto the rotary drive unit (1
The rotating cylinder (165) of 45) reversely rotates the rotating shafts (14B) to (151), thereby causing the support rods (63) (7B) (93) (10B) and presser foot (64) ( 79) (94) (1
09) in the opposite direction, presser foot (64) (79)
(94) and (109) are placed above the corresponding connecting rod (1) and cab (6), respectively. After this, the lifting cylinder (146) is shortened and the rotating shafts (148) to (15)
1) and its engaging protrusions (152) to (155)
Support rod (63) (7B) (93) (10
8) Engagement 1 (65) (80) (95)
Extract from (110). Then, each support rod (63)
(7B) (93) (10B '') are pushed down by the elasticity of springs (6B) (83) (9B) (113) and presser metals (64) (79)
(94) (109) is lowered, thereby presser foot (64) (79) (94) (109)
Press it onto the connecting rod (1) and camp (6) and attach it to the connecting rod (1).
) and camp (6) are temporarily clamped.

When temporarily clamped, the driving cylinder (167) and pressing cylinder (179) (180) of the first driving part (16B)
) (181) extends, and each pressing cylinder (17
Piston rod (179a) of 9 (180) (181)
(180a) Second, third and fourth clamp mechanisms (77) (92) (107) at (181a)
Press the cams (86) (101) (116) of the support rods (78) (93) (10B) to open the cam holes (
81) (96) (111) and support rod (78) at the tapered surface (8B) (102) (118).
) (93) Press down (108) further and press the presser foot (79) (94) (109) to connect the connecting rod (1).
) and the cap (6) are firmly clamped. In addition, the drive cylinder (183) and press cylinder (191) of the second drive unit (182'') also extend, and the press cylinder (
The cam (71) of the first clamp mechanism (62) is pressed by the piston rod (183a) of the support rod (6
3) into the cam hole (66) and its tapered surface (73)
Press the support rod (63) further down to release the presser foot (109).
) to firmly clamp the connecting rod (1) and cap (6). Further, the elevating cylinder (211) of the third drive unit (192) extends and the engagement frame (197) (
198) is raised, and then the swing cylinder (203) is shortened to lower the engagement frame (197) (19B).
are laid down and removed from the cams (125) (137'), after which the push-up cylinders (208) (211) are extended to raise the push-up members (209) (212>, and the push-up members (209) ) At (212), cam (
125) Push up (137) and press the pressing part (127
> (139) respectively press rod (123) (135
) into the cam holes (124) (136), and press the pressing rod (12) with the tapered surface (126) (13B).
3”) (135), and push out the pressing rod (12
3) (135”) fixing arm (122) (13
3), press the connecting rod (1) against the holding fitting (46) using one fixed arm (122), and press the cap (6) against the holding fitting (48) using the other fixed arm (133). ) and clamp them respectively.

When the clamping of the articulating rod (]) and the cap (6) is completed, the lift cylinder (144) performs a shortening operation to lower the box frame (143) and return the pallet (10) onto the conveyance line.・Second drive unit (166)
(182) each engagement frame (168) (16
9) (170) (185) to cam (86) (1
01) (116) Remove from (71) and prepare for the next operation below. After this, the pallet (10) is transferred from the loading/unloading station (k) to the first reversing station (a).
It is sent to the joint rod (1) and the camp (6) to be processed.

In addition, the connecting rod (1) clamped to the pallet (10)
) and the cap (6) when drilling holes, use the pennoche (216) (217) (2) to guide the tip of the drill.
1B) (219) are fixedly arranged above the pallet conveyance line in each case station, and as the pallet (10) rises, the window hole (49) formed in the pallet (lO) ) (50)
(51) Passes through (52) and is positioned opposite to the front and back of the connecting rod (1) and the cap (6) to accurately guide the drill.

In addition, the holding metal fittings (46) provided on the pallet (10) are
) (47) The shape of (4B) and the number of support rods and pressers to be used may be appropriately selected depending on the workpiece to be clamped.

This invention uses a spring to push down the support rod that supports the presser foot that clamps the workpiece, and further pushes down the support rod with the tapered surface of the cam to clamp the workpiece with the presser foot. , The clamping force of the workpiece is strong, and the workpiece remains stable even when a large amount of chips or compressed air is supplied to break up the chips during machining, or when the pallet is turned over, the workpiece does not shift its position. It is possible to carry out various types of processing. In addition, the pallet uses a cam and a spring to push down the support rod and clamp the workpiece using a mechanical mechanism, so once the workpiece is clamped, the workpiece continues to be clamped in the same state without being affected by external influences, so the machining station The clamping posture of the workpiece does not change when it is transported from one processing station to the next processing station or during processing at each processing station, making it possible to perform highly accurate processing on the workpiece.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing one embodiment of the workpiece conveying bullet according to the present invention, FIG. 2 is a sectional view taken along line nn in FIG.
The figure is a sectional view taken along the line 1-11I in Figure 1, and Figure 4 is a sectional view taken along the line 1-11I in Figure 1.
5 is a sectional view taken along line V-V in FIG. 1, FIG. 6 is a plan view showing an example of a processing device using a pallet according to the present invention, and FIG. 7 is a front view of the processing device. Figure 8 is a side view of the processing device, Figures 9 (a) and (b) are a plan view and front view of the connecting rod, and Figures 10 (a) and (b) are a plan view and front view of the can knob. , FIG. 11 is a plan view of a control mechanism for clamping a workpiece on a bullet, FIG. 12 is a longitudinal sectional front view of the control mechanism, and FIG. 13 is a longitudinal sectional side view of the control mechanism. (10)---Pallet, (45) one board, (63) (
7B) (93) (108) ・-Support rod, (
64) (79) (94) (109) - Presser foot, (6B) (83) (9B) (113) -
Spring, (71) (86) (101) (1
16) - Cam. ! I 9 diagram (in/-ra 1θ diagram (in a 7 notification d C mouth) ('0) sis @ 2!14

Claims (1)

[Claims] (1) A substrate large enough to place a workpiece, a holding fitting fixed on the substrate and having a concave portion for accommodating the workpiece, and a holding fitting that penetrates the substrate and is supported so as to be rotatable and vertically movable, and A plurality of support rods are constantly pressed downward by a return spring wound around the support rods, and have engagement grooves formed on the lower end surfaces and cam holes formed in the intermediate portions in a direction perpendicular to the axis, and the upper ends of the support rods. A plurality of presser metals are pivotally mounted to be able to swing freely and press the workpiece to the holding metal fittings from above to clamp the workpiece, and a pressing part that is slidably provided on the lower surface of the substrate and has a tapered surface at the tip, A pallet for transporting workpieces, comprising a plurality of cams whose pressing portions are inserted into cam holes of the support rods and push the support rods downward on tapered surfaces.