JP2869247B2 - Stacked sheet feeding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile assembly plant, in which a rear seat (seat seat portion and seat back portion) conveyed in a stacked state on a conveyor is sent out from the conveyor without breaking the stacked state. The present invention relates to a multi-layered sheet feeding device used for the above.

[0002]

BACKGROUND OF THE INVENTION Rear seats for automobiles are:
Usually, the seat seat and the seat backrest are set and conveyed in a stacked state. Thus, the sheet is conveyed from the end of the conveyor that conveys the sheet in a stacked state,
For example, when a sheet assembling robot sends a sheet into a receiving box that is used to receive a sheet at a predetermined position, the stacked state of the sheets is broken and the sheets are disjointed, the order of the sheets is changed, or the posture of the sheets is incorrect. And the robot may not be able to pick up the sheet normally.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and its features are indicated by reference numerals in the embodiments described later. The stacked sheet feeding apparatus according to the present invention includes a standby position A below the sheet supporting surface of the conveyor 1 and an inclined front in the sheet discharging direction above the sheet supporting surface at the terminal end of the stacked rear sheet conveying conveyor 1. Sheet lifting tables 35a to 35c that can swing up and down between the sheet discharge positions B
And a driving means 36 for vertically swinging the sheet, and the stacked sheets 7a and 7b sent on the conveyor 1 are provided.
To the sheet lifting tables 35a to 35 at the standby position A.
c and a sheet pressing and fixing plate 38 which can be raised and lowered with respect to the sheet lifting tables 35a to 35c.
The stoppers 37 and the sheet pressing and fixing plate 38 are connected to the sheet lifting tables 35a to 35c.
It is characterized in that it swings integrally with c.

[0004]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, reference numeral 1 denotes a conveyor for stepped rear sheet conveyance, and reference numeral 2 denotes a direction perpendicular to the top of the start end of the conveyor 1. It is a hanging conveyance device arranged in. The suspension transport device 2 suspends an elevator 6 with a plurality of lifting drive belts 5 from a self-propelled transport train 4 suspended on a guide rail 3. A hanger 8 having an L-shaped front face for supporting a plurality of seats (seat seat portion and seat backrest portion) 7a and 7b leaning on the same is attached. Reference numeral 9 denotes a fixed elevating guide rail, which is a guide roller unit attached to the elevating body 6 and which lowers the elevating body 6 which is lowered by feeding out the belt 5 from the train 4 stopped at a predetermined position above the starting end of the conveyor 1. Guide through 10.

[0005] Reference numeral 11 denotes a sheet stacking state correcting device provided at an intermediate position in the conveying direction of the conveyor 1, and reference numeral 12 denotes a sheet stacking sheet feeding device provided at the end of the conveyor 1. As shown in FIG. 3, the conveyor 1
A chain conveyor having two rows of conveyor chains 1a and 1b, wherein a plastic support plate is attached to a chain link of the conveyor chains 1a and 1b so as not to damage the sheet. As shown in part in FIG. 6, the sheet slides between the two rows of conveyor chains 1a and 1b and at the left and right sides at a level appropriately lower than the support level of the conveyor chains 1a and 1b. The moving fixed plates 1c to 1e are installed.

As shown in detail in FIG. 2 and FIG. 3, the sheet stacking state correcting device 11 has an operation position (a lower limit position shown in FIG. 2) for receiving a fed sheet and a retracted position (an upper limit position). Stopper 13 that can be moved up and down between
And a sheet rear-pressing device 14 that can be raised and lowered between a sheet rear-pressing position (a lower limit position shown in FIG. 2) and a retracted position (a lower limit position) at a position behind the sheet received by the stopper 13; Driving means 15 for reciprocating the tool 14 back and forth in the sheet conveying direction, and the stopper 1
3 lifts the sheet received from the sheet supporting surface of the conveyor 1, that is, the sheet supporting surface of the conveyor chains 1a and 1b.
c, a sheet presser 17 that can move up and down directly above the sheet received by the stopper 13, and a pair of left and right sheet pullers 18 a, which move closer to and away from each other to center the sheet received by the stopper 13.
18b.

The stopper 13 is connected to and supported by a piston rod 19a of a lifting / lowering driving cylinder unit 19 mounted on a fixed frame F, and is driven by the cylinder unit 19 to move up and down. The stopper 13 can be provided with an elevating guide for guiding both right and left ends, but is omitted in the drawing. The driving means 15 of the sheet post-pressing device 14 includes a movable table 22 having left and right ends supported by a pair of left and right fixed guide rails 20a and 20b attached to a fixed frame F via a slide guide 21 so as to be movable back and forth. A rodless cylinder unit 23 attached to a fixed frame F to reciprocate the movable table 22 back and forth comprises a pair of left and right elevating guide rails 24a attached to the movable table 22. The left and right ends are attached to the lower end front side of a lifting frame 26 which is supported by a lifting roller 24b via guide rollers 25.
Is connected to a piston rod 27b of a lifting drive cylinder unit 27 attached to the movable base 22.

The sheet supporting plates 16a to 16c are, like the fixing plates 1c to 1e described above, divided into the middle of the conveyor chains 1a and 1b and the left and right outer sides. The piston rod 29 of the lifting drive cylinder unit 29 attached to the upper end of the plurality of lifting guide rods 28 supported by the fixed frame F and mounted on the fixed frame F.
a, and the sheet support plates 16b, 16c on both sides are
The left and right lateral connecting members 30 connected to the lower ends of the plurality of elevating guide rods 28 are attached to the left and right ends of the connecting members 30 via support rods 31, and the whole is vertically driven by the cylinder unit 29.

The sheet presser 17 is connected to and supported by a piston rod 32a of a lifting drive cylinder unit 32 mounted on a fixed frame F, and is driven up and down by the cylinder unit 32. The pair of left and right sheet shifters 18a and 18b are a pair of front and rear horizontal guide rods 33 supported by a fixed frame F, respectively, and a cylinder unit 34 mounted on the fixed frame F at an intermediate position between the two guide rods 33. It is supported by the tip of the piston rod, and is individually driven in the left and right lateral directions by the cylinder unit 34.

The stacked sheet feeding device 12 shown in FIGS. 1 and 5 to 7 has a sheet supporting surface of the conveyor chains 1a and 1b at the end portion of the stacked rear sheet conveying conveyor 1 as shown in FIG. A sheet lifting table 35a-35c which can swing up and down between a lower standby position A and a sheet discharge position B inclined forward in the sheet discharge direction above the sheet support surface as shown in FIG. And a drive means 36 for vertically swinging the upper and lower sheets, and receiving the stacked sheets 7a and 7b sent on the conveyor 1 directly above the sheet lifting tables 35a to 35c at the standby position A. A stopper 37 and a sheet pressing / fixing plate 38 that can move up and down with respect to the sheet lifting tables 35a to 35c are connected to the sheet lifting tables 35a to 35c. That.

The seat lifts 35a to 35c are
Similarly to the fixed plates 1c to 1e described above, it is divided into the middle of the conveyor chains 1a and 1b and the left and right outer sides, but the base is integrally connected by one horizontal rotation shaft 39 and the horizontal rotation is performed. It is supported so as to be able to swing up and down around a shaft 39. Of course, the three independent sheet lifting tables 35a to 35c are not integrally connected by the horizontal rotation shaft 39, but a common base is provided to the sheet lifting tables 35a to 35c to form a fork-shaped planar shape. A support shaft may be used to be able to swing up and down freely. The driving means 36 is composed of two cylinder units 41, 42 in which piston rods 41a, 42a are connected to the upper end of a gate-shaped frame 40 that connects the sheet lifting tables 35a, 35c at both ends to each other. The two cylinder units 41 and 42 are supported on the fixed frame F by a concentric horizontal support shaft 43 parallel to the horizontal rotation shaft 39 so as to be vertically swingable.

The stopper 37 is provided with an elevation drive cylinder unit 44 attached to the portal frame 40.
Of the seat lift bases 35a to 35-3
5c is driven up and down. Further, the sheet pressing and fixing plate 38 is connected and supported by a piston rod 45a of a lifting and lowering driving cylinder unit 45 attached to the portal frame 40, and is driven by the cylinder unit 45 to move up and down on the sheet lifting tables 35a to 35c. You.
As shown in FIG. 6, the stopper 37 and the sheet pressing / fixing plate 38 are provided with elevating guide rollers 46 and 47 projecting from both left and right ends, respectively, and attached to the portal frame 40 and provided with the elevating guide rollers 46 and 47. An elevating guide composed of elevating guide rails 48 and 49 with which the 47 is engaged can be provided.

As shown in FIGS. 1 and 7, outside the terminal end of the stepped rear sheet conveying conveyor 1,
A receiving box 50 for receiving the stacked sheets 7a and 7b discharged by the stacked sheet feeding device 12 is arranged.

Next, the method of using the above equipment will be described. As shown in FIG. 1, the self-propelled transport train 4 of the hanging transport device 2 is moved to a predetermined position above the start end of the stepped rear sheet transport conveyor 1. After stopping, the lift 6 of the train 4 is lowered to a predetermined lower limit level by feeding out the belt 5. As a result, the horizontal support portion 8a of the hanger 8 descends below the conveyor chains 1a, 1b of the conveyor 1, and the two sheets 7a, 7b leaning obliquely on the hanger 8 are moved by the conveyor 1 On the conveyor chains 1a and 1b. At this time, it is assumed that the upper sheet 7b slides forward and is supported obliquely between the upper front end of the lower sheet 7a and the conveyor chains 1a and 1b as shown in the figure. Of course, two sheets 7
Even if the conveyor chains 1a and 1b are lowered while the conveyor chains 1a and 1b are being rotated, even if the conveyor chains 1a and 1b are lowered, even if the conveyor chains 1a and 1b are The preceding and upper sheet 7b is the sheet 7
a may be supported obliquely between the rear end of the upper surface and the conveyor chains 1a and 1b.

In any case, the sheets 7a and 7b transferred from the hanger 8 onto the conveyor 1 are transferred to the conveyor 1
Before the sheets 7a, 7b arrive at the next-stage sheet stacking state correcting device 11, the stopper 13 of the device 11 is moved down by the cylinder unit 19 to the lower limit position (operation). position)
And let it go down. Of course, the sheet pusher 14 is returned to the retreat ascending limit position and made to stand by, and the sheet support plates 16a to
16c is lowered from the sheet supporting surfaces of the conveyor chains 1a and 1b, the sheet presser 17 is kept on standby at the ascending limit position, and a pair of left and right sheet shifters 18a,
Numerals 18b stand by at the retreat limit positions, respectively.

The sheets 7a conveyed by the conveyor 1
7b, the preceding sheet (sheet 7 in the illustrated example)
After the tip of b) comes into contact with the stopper 13, the conveyor chains 1a and 1b are stopped with a slight delay, and then the sheet pusher 14, the sheet support plates 16a to 16a are stopped.
6c, sheet presser 17, and sheet shifter 18
a and 18b are respectively moved from the standby position to the operation position.
That is, as shown in FIG.
c is raised to the limit position by the cylinder unit 29, and the sheets 7a, 7b are lifted above the sheet supporting surfaces of the conveyor chains 1a, 1b.
4, the sheet 7a and 7b on the sheet support plates 16a to 16c are moved closer to each other from the retreat limit position, and the sheet pusher 14 is lowered by the cylinder unit 27 to the lower limit position (sheet push position). After that, the sheet is moved forward by the rodless cylinder unit 23, and the sheet (the sheet 7a in the illustrated example) at the delayed position among the sheets 7a and 7b on the sheet support plates 16a to 16c is pushed by the sheet pusher 14. Then, the sheets 7a and 7b are corrected to a normal stacked state. The sheet 7a is pressed by the sheet pusher 14.
If the sheet presser 17 is lowered to the lower limit position by the cylinder unit 32 before the sheet 7b is pushed further, the inclined sheet 7b is prevented from rising, and the sheet 7a to be pushed later is securely moved to the sheet 7b. You can enter below.

When the operation of the sheet stacking state correcting device 11 is completed, the stopper 13, the sheet rearward pressing member 14, the sheet supporting plates 16a to 16c, the sheet pressing member 17, and the sheet shifting members 18a and 18b are respectively returned to the original state. To the standby position, and the sheets 7a and 7b in the stacked state on the sheet support plates 16a to 16c are returned to the original conveyor chain 1.
The sheets 7a and 7b corrected to a normal stacked state can be conveyed again by the conveyor 1 by returning the sheets 7a and 1b to the normal stacked state, and the sheets 7a and 7b are transferred to the stacked sheet feeding device 12 at the end of the conveyor. Prior to arrival, as shown in FIG.
35c is returned to the standby position A, and the stopper 37 is lowered by the cylinder unit 44 to a lower limit position (an operation position for receiving a sheet). Of course, the sheet pressing / fixing plate 38 is raised to the ascending limit position by the cylinder unit 45 and kept on standby.

If the stacked sheets 7a and 7b are received by the stopper 37 of the stacked sheet feeding device 12 as shown in FIG. 1, the conveyor chains 1a and 1b are stopped with a slight time delay. Next, the sheet pressing and fixing plate 38 is lowered by the cylinder unit 45, and the sheet lifting tables 35a to 35c are rotated around the horizontal rotation shaft 39 toward the sheet discharge position B by the cylinder units 41 and 42 of the driving means 36. Let it.

As a result, the sheets 7a and 7b in the stacked state on the conveyor 1 are moved upward by the sheet lifting tables 35a to 35a.
35c, and the seat lifts 35a-35
c, at the same time as the sheet lifting tables 35a to 35c are pressed and fixed to the sheet lifting tables 35a to 35c by the sheet pressing and fixing plate 38 descending with respect to the sheet lifting tables 35a to 35c. Then, as shown in FIG. 7, when the sheet lifting tables 35a to 35c arrive at the sheet discharge position B and stop, the stopper 37 is raised and opened by the cylinder unit 44.
Since a and 7b are sandwiched between the sheet pressing and fixing plate 38 and the sheet lifting tables 35a to 35c, as the stopper 37 is opened, the sheets 7a and 7b are sequentially lifted from the lower one. It does not slide off from the tables 35a to 35c.

When the stopper 37 reaches the ascending limit position and is completely opened, the sheet pressing and fixing plate 38 is raised by the cylinder unit 45, so that the fixed and released sheets 7a and 7b are released. Slip off from the sheet lifts 35a to 35c all at once, and the receiving box 5
Since the two sheets 7a and 7b are housed in the inner space, there is no possibility that the two sheets 7a and 7b are disjointed and their postures collapse.

[0021]

As described above, according to the stacked sheet feeding apparatus of the present invention, the sheet lifter that rotates upward after receiving the sheet conveyed in the stacked state on the conveyor with the stopper. In this case, the sheet is lifted from the conveyor and tilted. At this time, the sheet pressing and fixing plate that moves integrally with the sheet lifting table is lowered to pinch and fix the sheet in a stacked state with the sheet lifting table. When the sheet lifting table reaches the sheet discharging position and opens the stopper, the sheet in the stacked state slides down from the sheet lifting table sequentially from the lower one with the opening movement of the stopper. However, by raising the sheet pressing and fixing plate after the stopper has completely opened, Since the seat of I state is sent sliding down from one fell swoop to the sheet lifting bench, two sheets there is no risk of collapse significantly attitude or've sort order is changed is falling apart.

Further, a stopper for receiving a sheet conveyed in a stacked state on the conveyor at a position directly above the sheet lifting table is provided on the sheet lifting table provided with the pressing and fixing plate. Since it is configured to swing integrally with the sheet lifting table, the sheet lifting table and the stopper maintain an initial posture perpendicular to each other even when the sheet lifting table is swinging upward and forward, When the sheet lifting table has completely lifted the stacked sheets from the sheet supporting surface of the conveyor, the stacked sheets are moved forward even if the pressing and fixing plate has not yet fixed the stacked sheets with the sheet lifting table. It does not slip and collapse. Therefore, although the temporal control of the pressing and fixing plate is easy, the stacked sheets can be reliably pressed and fixed on the sheet lifting table in the initial posture received by the stopper, and the intended feeding action can be achieved. Can be performed well.

[Brief description of the drawings]

FIG. 1 is a schematic side view of the entire equipment.

FIG. 2 is a partially longitudinal side view of the device for correcting a stacked state of sheets.

FIG. 3 is a rear view of the same device.

FIG. 4 is a partially longitudinal side view showing an operation state of the device.

FIG. 5 is a partially cutaway side view of the stacked sheet feeding device.

FIG. 6 is a plan view of the same device.

FIG. 7 is a partially cutaway side view showing an operation state of the device.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 Conveyor for stacking rear seats 1a, 1b Conveyor chain 2 Suspension conveying device 4 Self-propelled transfer train 7a, 7b Rear seat (seat seat and seat backrest) 8 Hanger 11 Sheet stacking correction device 12 Stacking sheet Feeding devices 35a to 35c Sheet lifting table 36 Sheet lifting table driving means 37 Stopper 38 Sheet pressing and fixing plate 39 Horizontal rotating shaft 41, 42, 44, 45 Cylinder unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B65G 57/00-57/32 B23P 21/00 303 B65G 47/00-47/96

Claims (1)

(57) [Claims] An end portion of a stepped rear sheet conveying conveyor is provided between a standby position below a sheet supporting surface of the conveyor and a sheet discharging position inclined forward in a sheet discharging direction above the sheet supporting surface. A vertically movable swingable sheet lifting table and driving means for vertically swinging the sheet lifting table are provided,
An elevating stopper that receives the stacked sheets sent on the conveyor right above the sheet lifting table at the standby position, and a sheet pressing and fixing plate that can move up and down with respect to the sheet lifting table. The stopper and the sheet pressure fixing plate are connected to the lifting table
A multi-layer sheet feeding device configured to swing together with the sheet lifting table .