JPH1043826A - Continuous transferring device of pressed metal sheet and chain conveyer therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove a press oil stuck on a metal sheet by taking up the metal sheet from a press of continuously pressing in a high speed, vertically making the metal sheet during transferring it with a finely pitched chain conveyer, installing a hot air drying furnace and drying it with a hot blast. SOLUTION: A pressed metal sheet is transferred while being supported vertically inside holding plates of a chain conveyer as it is stuck with a press oil, and it is entered in a hot air drying furnace 6. When the metal sheet is heated with a hot blast of 100 deg.C and it is passed through the hot air drying furnace 6, the stuck oil is removed with the hot blast. Then, when more metal sheets are transferred and these are reached to a prescribed number of sheets, take-up levers 8 are advanced into two windows pressed on the metal sheet by driving a servo motor and rotating a ball screw.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic transfer device for pressed parts in a metal press. More specifically, the present invention relates to an apparatus for continuously taking out a continuously pressed thin plate from a mold horizontally and continuously, vertically transferring the thin plate onto a chain conveyor, and removing and transferring press oil from the thin plate.

[0002]

2. Description of the Related Art When a metal thin plate is pressed, generally, a metal plate to be processed is placed horizontally in a mold, and the processed part is taken out horizontally by a conveyor or the like. In press working, a press oil is often applied to a metal plate or a metal mold. Degreasing of processed parts is performed by various methods. However, depending on the order of processing and assembling the parts, there is a case where it is required to immediately degrease the processed parts after the press working and transfer them to the next step. In such a case, if the pressed parts are horizontally arranged on a conveyor and transferred as described above, the oil adheres to the front and back of the processed product, and it is difficult to continuously remove the oil. .

[0003]

SUMMARY OF THE INVENTION The present invention solves the problem of removing oil adhering to a processed product in a continuous process when continuously pressing a thin metal plate as described above, and improves the productivity of press working. It is intended. It is another object of the present invention to enable a workpiece to be transferred at very small intervals in a chain conveyor.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, a conveyor for horizontally removing and transferring a pressed sheet metal from a mold, receiving the sheet metal on the conveyor horizontally and receiving the sheet metal vertically. A chain conveyor device for rotating the holding plate to be supported is provided, and a hot-air drying furnace for drying the thin metal plate with the press oil attached thereto with hot air while being transferred by the chain conveyor device is provided. An unloading device for unloading from the chain conveyor was provided. Then, the chain conveyor device is fixed to the drive shaft and the driven shaft of the sprocket wheel with a plurality of rows of sprocket wheels being shifted in phase, and each of the plurality of rows of sprocket wheels surrounds the chain. A holding plate is provided on one side of the link of the chain to support both ends of the support plate and vertically support the plate to be transferred to the support plate, and the distance between the vertically supported and transferred plate is set to the distance of the chain link. Shorter than the pitch.

Further, in the case of a shutter made of a thin metal plate provided with two windows for holding a plastic outer frame of a floppy disk, the take-out device is a holding device, an extruding device, and a chuck device, and the holding device is driven by a servo motor. A plurality of vertically movable cantilever beams horizontally supported by a take-out rod support bracket supported by a vertical slide base fixed on a slide that reciprocates on a slide base by a ball screw. A take-out rod was provided, a shutter was held upward from a holding plate provided on the chain conveyor by raising the take-out rod support bracket, and further held on the take-out rod by a forwardly and backwardly movable inclined extruded piece provided on the take-out rod support bracket. Move the shutter,

The extruder is provided with a moving member which reciprocates by a rodless cylinder, a leading end of the pushing piece is supported on a fixed plate fixed to the moving member, and a rear end of the pushing piece is moved by a cam. The pusher is supported by a cam follower mounting rod that moves in a direction perpendicular to the moving direction of the child, and the extruder is provided with a movable member that reciprocates by a rodless cylinder, and the tip of the extruded piece is fixed to a fixed plate fixed to the movable member. So that the rear end of the extruded piece is supported by a cam follower mounting rod that moves in a direction perpendicular to the moving direction of the mover by a cam,

[0007] A chuck device is supported by a bracket fixed to a shutter pushing device so as to be vertically movable, horizontally movable and rotatable so that the shutter can be held.

[0008] In a chain conveyor device in which a chain surrounded by a plurality of sprocket wheels is rotated, a work shaft and a driven shaft of a sprocket wheel are provided so that workpieces can be transferred at very small intervals. A pair of out-of-phase sprocket wheels are fixed, a chain is surrounded by each of the two rows of sprocket wheels, and both ends of the support plate are supported by mounting plates provided on one surface of a pair of links of the chain. Then, a holding plate for vertically supporting the plate to be transferred is provided on the support plate, and the interval in the transfer direction of the vertically supported and transferred plate is shorter than the pitch of the chain link.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the accompanying drawings. First, a description will be given of a main device constituting a continuous transfer device for a thin metal plate in the press of the present invention. 1 and 2, reference numeral 1 denotes a press for continuously pressing a metal plate, and 2 denotes a shutter S which is a thin metal plate provided with two windows for holding a plastic outer frame of a floppy disk. Reference numeral 3 denotes a press die for simultaneously pressing sheets, and reference numeral 3 denotes a hoop material for continuously inserting a steel plate to be pressed into the die. Reference numeral 4 denotes a product take-out conveyor device that surrounds a conveyor belt that conveys the pressed shutter S to the next step.

Reference numeral 5 denotes a double-row chain conveyor device which transports the double-row shutters S which have been transported horizontally from the product take-out conveyor device 4 in a vertically standing state at a narrow interval. Reference numeral 6 denotes a hot-air drying furnace for hot-air drying press oil adhering to the shutter S transported by the double-row chain conveyor device. Two windows for holding the plastic outer frame of the floppy disk by taking out the thin metal plate to be taken out as a take-out device for counting the predetermined number of shutters transferred by the chain conveyor device 6 and taking them out of the chain conveyor device 6. In the case where the shutter is provided, a holding device, an extruding device, and a chuck device are required. Reference numeral 7 denotes a holding device provided with a take-out rod 8 that is reciprocally mounted on a slide base 9, and reference numeral 10 denotes a cam device that moves the holding device 7 up and down. Reference numeral 11 denotes an extruding device that extrudes and holds a fixed number of shutters suspended on the extraction rod 8 of the holding device 7.

In FIG. 2, reference numeral 12 denotes a main servomotor serving as a main drive source of a continuous metal thin plate transfer device in a press, and reference numeral 13 denotes a speed reducer for reducing the output rotation speed of the main servomotor 12 by electronic operation. . 14 and 15 are gears that mesh with each other at a gear ratio of 1: 1. Reference numeral 16 denotes an index, and reference numeral 17 denotes a transmission shaft that transmits the rotation of the main servomotor 12 to the gear 14 and transmits the rotation to the index 16. 1
Reference numeral 8 denotes a transmission shaft for driving the product take-out conveyor device 4, reference numeral 19 denotes a bevel gear fixed to the end of the transmission shaft 18, and reference numeral 20 denotes a bevel gear that meshes with the bevel gear 19.

Reference numeral 21 denotes a drive pulley for rotating the conveyor belt 22 of the product take-out conveyor device 4 by rotation of the bevel gear 20, and reference numeral 23 denotes a continuously variable transmission for adjusting the rotation speed of the drive pulley 21. Reference numeral 24 denotes a speed reducer that reduces the output rotation speed from the index 16 to form a toothed pulley 25 fixed to the output shaft of the speed reducer 24 and a toothed pulley 28 fixed to the drive shaft 26 of the chain conveyor device 5. The drive shaft 26 is rotated by being surrounded by the toothed belt 27.

As shown in FIG. 3, three pairs of sprocket wheels 29, 30 and 31 are fitted to both ends of the drive shaft 26, and the sprocket wheels 29, 30 and 31 are respectively shifted in phase. The key 44 fixed to the drive shaft 26 is fitted into a key groove provided in a phase shifted manner on each sprocket wheel in order to fix the drive shaft 26 to the drive shaft 26, and the three sets of sprocket wheels 29, 30, 31 are driven. It is fixed to the shaft 26. By surrounding a plurality of sets of chains with sprocket wheels shifted in phase with respect to the drive shaft, the mounting pitch of the holding plates 41, 42, and 43 that vertically support the shutter can be reduced. I have. The pair of sprocket wheels 29, 30 and 31 surround three pairs of chains 32, 33 and 34, respectively. 3 each
Mounting plates 35, 36 and 37 are provided on one side of each link of the pair of chains 32, 33 and 34.
The mounting plates 35, 36 and 37 are alternately fixed to the outside and inside of one side of the link since the connected links of the chains 32, 33 and 34 alternately contact outside and inside. ing. Reference numerals 41, 42, and 43 denote holding plates that are configured to hold the shutter S within two plates for vertically transferring the pressed shutter S, and that the holding plates 41, 42, and 43 include: The link mounting plate 35 (36, 3) of the pair of chains 32 (33, 34)
7) Support plate 41b (42b, 43b) with both ends fixed
Are fixed to the center of each of the two sets. 45, 4
Reference numerals 6 and 47 denote driven shafts of the chain conveyor device 5. Three sets of sprocket wheels are provided in the same manner as the drive shaft 26, and surround the chains 32, 33, and 34, respectively.

As shown in FIG. 4, the holding device 7 is provided with a slide 49 which slides on a slide base 9 fixed to the machine base, and a vertical slide base 50 is fixed to the slide 49. I have. An extraction rod support bracket 51 supports a plurality of extraction rods 8 horizontally in a cantilever manner, and is mounted so as to be able to ascend and descend along a vertical slide base 50. As shown in FIG. 2, a ball screw 52 rotatably supported by the machine base is provided with a servo motor 53.
Driven by A female screw (not shown) is fixed to a lower portion of the slide 49 and is screwed to the ball screw 52. The ball screw 52 is rotated by the driving of the servo motor 53, and the slide 49 reciprocates on the slide base 9.

Reference numeral 54 denotes a speed reducer, which is a main servo motor 12
Is transmitted to the speed reducer 54 via the gears 14 and 15 to rotate the disk cam 55 of the cam device 10. On one side surface of the disc cam 55, a cam groove 56 is provided, which is formed by connecting semicircles that are concentric and have different radii with a curved line. The lever rod 57 provided adjacent to the side surface provided with the cam groove 56 is provided with a bearing 5 fixed on a support 58 fixed to the machine base.
9 is pivotally supported by a shaft 60. Reference numeral 61 denotes two guide tubes symmetrically provided on both sides of the slide base 9 at a fixed interval, and is fixed to a support plate 63 fixed to a bracket 62 fixed to the machine base.

Numerals 64 denote moving rods which are fitted into the four guide cylinders 61 and move up and down. Lower ends of the four moving rods 64 are fixed to the four corners of the connecting plate 65, respectively. The top end of the book
Are fixed to the lower part of a pair of extraction rod vertical movement brackets 66 provided adjacent to both sides of the extraction rod. The take-out rod vertical movement bracket 66 is provided with a sliding surface 66a.
Guide rollers 51a fixed to both side surfaces of the extraction rod support bracket 51 are mounted so as to be movable on the sliding surface 66a. Reference numeral 67 denotes a lever rod bracket having a lower end fixed to a connecting plate 65 connecting the lower ends of the movable rods 64, and the upper end of the lever rod 57 is pivotally supported by a pin.
The cam follower 68 is fixed to the rear of the shaft 60 of the lever rod 57, the tip of the cam follower 68 is inserted into the cam groove 56 of the disk cam 55, and the tip of the lever rod 57 is rotated about the shaft 60 by the rotation of the disk cam 55. Move. 69 is a weight,
The cam follower 68 adjusts the contact pressure against the cam groove 56.

The extruder 11 has a rodless cylinder 70
Is provided, and the shutter S is connected to the chain conveyor device 5.
And is fixed above the rear part of the chain conveyor device 5 so that it can be taken out after passing through the hot air drying furnace 6. As shown in FIG. 4, a fixed plate 72 is fixed to the lower part of the moving element 71 of the rodless cylinder 70, and the tip of two sets of push rods 73 is attached to the pin 74 at the tip of the fixed plate 72. The rear end portion is pivotally supported by a cam follower mounting rod 75 by a pin 75a. The cam follower mounting rod 75 is supported movably in a direction perpendicular to the fixed plate 72. 7
Reference numeral 6 denotes a pushing piece fixed to the tip of the pushing rod 72 and pushing out the shutter S. Reference numeral 77 denotes a cam plate, which is fixed in parallel to the axial direction of the rodless cylinder 70, has a cam groove 78 formed therein, and a cam follower 79 provided at the tip of a cam follower mounting rod 75 is movably fitted therein. .
80 is a pair of slope extruded pieces, and 81 is a pair of slope extruded pieces 8.
A pair of cylinders fixed to an extraction rod support bracket 51 for reciprocating the cylinder 0 relative to the extraction rod 8. 8
Reference numerals 2 and 84 denote projectors for the phototube, and reference numerals 83 and 85 denote light receivers for the phototube. Each ray is projected diagonally.

Reference numeral 86 denotes a chuck device for taking out a fixed number of shutters. The chuck device 86 is attached to a bracket 87 fixed on the extruding device 11 and mounted on a pair of slides vertically attached to the plane of FIG. It is supported by a support 88 that moves along, and is fixed to a shaft 91 that is rotatably fixed to a support 90 that moves up and down along a vertical slide 89 provided on the support 88.

Next, the operation will be described. Here, numerical values are used to explain the operation, but this is an embodiment of the present invention, and the present invention is not limited by the numerical values used. The press 1 uses a crank press, and the crank rotates at 350 rpm. Press 1 is equipped with an encoder that emits 2,000 pulses per second. When the press starts operating, the signal counted by the encoder is sent to the servomotor 12. Servo motor 12
Is rotated at 2,100 revolutions per minute, the speed is reduced to 1/6 by the electronic gear in the servo motor 12, and the transmission shaft 17
Rotate 50 times. Intermittent rotation in which the output shaft rotates 30 degrees per rotation of the transmission shaft 17 transmitted to the index 16, that is, intermittent rotation in which the output shaft stops 12 times when the input shaft rotates once. Therefore, the intermittent rotation speed of the transmission shaft 18 for driving the product take-out conveyor device 4 is 29.166 per minute.
Rotation. The length of the shutter S processed by the press 1 in the conveyor feeding direction is 45 mm, and if the product take-out conveyor 4 moves 60 mm during one stroke of the crank of the press 1, the products can be fed without overlapping. Therefore, the feed amount of the conveyor 22 of the product take-out conveyor device 4 was set to 60 mm. The diameter of the drive pulley 21 for rotating the conveyor belt 22 of the product take-out conveyor device 4 is 60 mm, and the rotation speed of the input shaft of the continuously variable transmission is 2 per minute.
9.166 rotations, so that the gear ratio N of the continuously variable transmission 23 for moving the conveyor 22 of the product take-out conveyor device 60 by 60 mm per one stroke of the crank of the press 1.
Is obtained as N = 3.82 from the relationship of 29.166 × N × 60π = 60 × 350.

On the other hand, the multiple rows of shutters S which are sent horizontally on the conveyor 22 of the product take-out conveyor apparatus 4 are provided with the holding plates 41, 4 provided in multiple rows on the chain conveyor apparatus 5.
It is pushed into either of 2, 43. The holding plate 41 (42, 43) of the chain conveyor device 5 is a support plate 41b.
(42b, 43b) is fixed to the mounting plate 35 (36, 37) fixed to one surface of each link of the chain, so that the time required for the link to move one pitch and the time required for one cycle of the press are equal. Shutter S is conveyor 22
Can be continuously transferred to the holding plate of the chain conveyor device 5. The index 16 performs an intermittent rotation that stops 12 times per rotation, and the output rotation number is 29.1.
66 revolutions / minute, and the reduction ratio of the speed reducer 24 is 1/10.
Therefore, intermittent rotation of 120 stops per rotation is performed, the number of rotations of the toothed pulley 25 is 2.9166 rotations / minute, the number of teeth of the toothed pulley 25 is 40T, and the tooth of the toothed pulley 28 is Since the number is 45T, the number of rotations of the sprocket wheel of the chain conveyor device 5 is 2.9166 × 40/45 = 2.596 rotations / minute. Sprocket wheel 29 of chain conveyor device 5
Since the diameter of (30, 31) is 136.55 mm,
The peripheral speed of the sprocket wheel is 136.55π × 2.
592 = 1111.36 mm / minute. Therefore, the amount of movement of the chain per rotation of the press crank is 111
1.36 / 350 = 3.175 mm. If the link length of the chain is set to 3.175 mm, a single pair of chains satisfies the condition. However, a chain with a short link length has problems in terms of strength and economy. Therefore, in the present invention, the three pairs of chains 32, 3
Using 3, 34, the link length is 3.175 mm x 3 =
9.525 mm.

The pressed shutter S moves vertically supported by the holding plate 41 of the chain conveyor device 5 and moves into the hot air drying furnace 6 with the press oil adhered thereto. When the shutter S is heated by the hot air at 100 ° C. and passes through the hot air drying furnace 6, the press oil adhering is removed by the hot air. When the shutter S is further moved and reaches a certain number, the servo motor 53 is driven to rotate the ball screw 52 to move the extraction rod 8 forward into the two windows pressed into the shutter S.

On the other hand, the rotation of the servo motor 12
15 (a gear ratio of 1: 1) is transmitted to the speed reducer 54 and reduced to 1/100 to rotate the disk cam 55 of the cam device 10 at 3.5 revolutions per minute. Therefore, since the press stroke is 350 times per minute, when the shutter S is pressed 100 times in one row, the disk cam 55 makes one rotation. Since one end of the disc cam 55 causes the tip of the lever rod 57 to move up and down once about the shaft 60, when 50 shutters S are inserted into the extraction rod 8 in one side row, a pair of extraction rod vertical movement brackets 6 is used.
With the rise of 6, the take-out rod 8 raises the pressed and degreased shutter S.

When the take-out rod vertical movement bracket 66 reaches the upper limit, the rodless cylinder 70 of the shutter pushing device 11 operates to advance the pushing piece 76 to move the 50 shutters S.
Is pushed to move forward. When the pushing piece 76 advances, the fifth
As shown in the figure, a cam follower 79 provided at the tip of the cam follower mounting rod 75 moves according to the cam groove 78, the cam follower mounting rod 75 moves in a direction perpendicular to the fixing plate 72, and the pushing piece 76 rotates around the pin 74 as an axis. Moving 50 shutters S
Overlaid. In this case, there is a notch in the window of the shutter S, and a slight return is provided there.
When extruded, the extruded piece 76 is pin 74
Is rotated about the axis. In the case of a flat plate without return, there is no need to consider the slope. Next, in order to ensure the position where the shutter S overlaps, the extraction rod support bracket 5 is used.
The pair of cylinders 81 fixed to 1 are operated to advance the inclined extruded piece 80 with respect to the extruded piece 76.

When the number of shutters 50 is confirmed by the detectors 83 and 85 of the phototube projectors 82 and 84 and the phototube receivers, the pushing piece 76 and the inclined pushing piece 80 are connected to the rodless cylinder 70 and the cylinder 81. Retreat by the operation of. Then, the chuck device 86 descends and grips the overlapped shutter S. At the same time, when the take-out rod 8 is retracted by the driving of the servomotor 53, the chuck device 86 is raised and rotated, and then the support device 88 is moved to move the shutter S to a predetermined position away from the chain conveyor device 5. On the other hand, the disk cam 55 continues to rotate, and the lower end of the lever rod 57 lowers, so that the extraction rod vertical movement bracket 66 is lowered, and the extraction rod 8 returns to the lowered position. Then the next cycle starts again.

As described above, according to the present invention, when a metal thin plate is pressed, oil adhering to a work plate sent out by a very fast press cycle is removed by a hot air drying furnace in a feed pitch of a chain conveyor. This was made possible by reducing the size of the plate, and by making the plate to be transferred vertical in the chain conveyor, the drying conditions were optimized and the plate pressed continuously could be transferred.

[Brief description of the drawings]

FIG. 1 is a front view of a continuous transfer device for a pressed metal sheet.

FIG. 2 is a plan view taken along the line II-II in FIG.

FIG. 3 shows a chain, a drive shaft, a sprocket wheel, and a pair of chains of a chain conveyor device of a continuous transferring device for pressed metal sheets, with holding plates fixed to a support plate having both ends supported by the chains. FIG.

FIG. 4 is an enlarged front view of a main part of a continuous transfer device for pressed metal sheets.

FIG. 5 is a view taken in the direction of arrows IV-IV in FIG. 4;

[Explanation of symbols]

 Reference Signs List 1 press 4 product take-out conveyor 5 chain conveyor device 6 hot air drying furnace 7 holding device 8 take-out rod 9 slide base 10 cam device 11 rodless cylinder 12 main servo motor 13 speed reducer 16 index 26 sprocket wheel drive shaft 29 sprocket wheel 30 sprocket Wheel 31 Sprocket wheel 32 Chain 33 Chain 34 Chain 35 Mounting plate 36 Mounting plate 37 Mounting plate 41 Holding plate 42 Holding plate 43 Holding plate 41b Support plate 42b Support plate 43b Support plate 49 Slide 50 Vertical slide base 51 Extraction rod support bracket 52 Ball Screw 55 Disc cam 70 Rodless cylinder 71 Moving element 72 Fixing plate 75 Cam follower mounting rod 76 Push piece 80 Slope push piece 86 Chuck device S Shutter

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location G11B 23/03 607 G11B 23/03 607J

Claims (3)

[Claims] 1. A press for continuously pressing a sheet metal, a conveyor for taking out and transferring the pressed sheet metal from a mold horizontally, receiving the sheet metal on the conveyor in a horizontal state, and vertically A chain conveyor device is provided for rotating a holding plate to be supported upright. A chain of the chain conveyor device is surrounded by a plurality of sprocket wheels fixed to both ends of a drive shaft and a driven shaft with a phase shift. A holding plate for supporting both ends of the support plate on the mounting plate fixed to one surface of each link of the plurality of rows of chains and vertically supporting the plate to be transferred to the support plate is provided. The interval is made shorter than the pitch of the chain link, and a hot air drying furnace is installed to dry the metal sheet to which the press oil has adhered with hot air while being transported by the chain conveyor. A continuous transferring device for a pressed metal sheet, comprising a take-out device for taking out the dried metal sheet from the chain conveyor device. 2. The chain according to claim 1, wherein the metal thin plate is a shutter which is a thin metal plate provided with two windows for holding a plastic outer frame of a floppy disk, and a chain of the chain conveyor device is shifted in phase to a drive shaft. And a plurality of sprocket wheels which are fixed to both ends of the driven shaft, respectively, and both ends of the support plate are supported by a mounting plate fixed to one surface of each link of the plurality of rows of chains, and the chain is transferred to the support plate. A holding plate that supports the plate vertically is provided, the spacing between the vertically supported and transferred holding plates is made shorter than the pitch of the chain link, and a take-out device for taking out the metal plate from the chain conveyor device is driven by a servo motor. A vertical slide base fixed on a slide reciprocating on the slide base by a ball screw is provided, and guided by the vertical slide base, A plurality of take-out rods, which are supported in a cantilever manner and are capable of moving forward and backward, are provided on a take-out rod support bracket that moves up and down at a predetermined cycle by the operation of the system. The extraction rod was inserted into the window of the supported shutter, the shutter was held upward by raising the extraction rod support bracket, and further held on the extraction rod by a forwardly and backwardly movable inclined extruded piece provided on the extraction rod support bracket. A holding device for moving the shutter so as to be surely overlapped, and a movable member reciprocating by a rodless cylinder are provided, and a leading end portion of the pushing piece is pivotally supported on a fixed plate fixed to the moving member, and a rear end portion of the pushing piece is provided. A pusher that pushes a shutter by tilting an extruding piece so as to be supported by a cam follower mounting rod that moves in a direction perpendicular to the moving direction of the mover by a cam, and a bracket fixed to the pushing device. The vertical movement, horizontal movement and rotatably supported by the chuck device and the stamped continuous transfer device for a metallic thin plate so as to hold the shutter overlaid. 3. A chain conveyor device for rotating a chain surrounded by a plurality of sprocket wheels, wherein a chain of the chain conveyor device is attached to a sprocket wheel having a plurality of phases fixed to both ends of a drive shaft and a driven shaft, respectively. A mounting plate that surrounds and is fixed to one surface of each link of the plurality of rows of chains and supports both ends of the support plate and vertically supports a plate to be transferred to the support plate is provided. A chain conveyor device in which the distance between the held and transferred holding plates is shorter than the pitch of the chain link.