JP2000153915A - Cross conveyor system and press molding line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To convey a work stably in the orthogonal direction without entailing any deformation, flaws, vertical and traverse movements on this work, and besides, there is no jog on the underside irregularities of this work hitting against each individual slat by making the slat itself go into its horizontal displacement when mounting the work on the slat as a belt conveyor goes down after receiving the work. SOLUTION: A cross conveyor system 1 consists of a slat conveyor mechanism 10 turning over a plurality of slats 12 to double timing belts 11 and 11 at the specified pitch, and making these timing belts 11 into a circular motion with two driving pulleys 13 and 13, and a belt conveyor mechanism 20 being narrower than a clearance of the slats 12, and equipping plural lines of belt conveyors 21 being smaller in conveyor length than the inside measurement of the double timing belts 11, and making these belt conveyors 21 so as to move them higher and lower than the slats 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a cross conveyor device and a press forming line including the cross conveyor device.

[0002]

2. Description of the Related Art As a cross conveyor device of a press forming line, for example, there is an "article sorting device" disclosed in JP-A-6-345254. According to FIG. 3 of the publication, this article sorting apparatus has an F-shaped conveyance path of an apparatus 71, and inspection conveyors 74a and 74b connected to a press machine 72, and upper and lower sides provided downstream of the inspection conveyors 74a and 74b. Sorting conveyors 75a and 75b, and a 90-degree conversion conveyor 8 provided downstream of the vertical sorting conveyors 75a and 75b
1a and 81b, and intermediate conveyors 84 and 87 connected at right angles to the 90-degree conversion conveyors 81a and 81b. In this publication, a 90-degree conversion conveyor (hereinafter referred to as a “cross conveyor”)
Called. The configuration of the cross conveyors 81a and 81b is not described in detail.

FIG. 9 is a perspective view of an essential part for explaining an example of a conventional cross conveyor. To make the diagram easier to understand,
Although the belt conveyor 101 is described above, it should be correct.
The belt conveyor 101 is at a position indicated by a virtual line.
That is, the cross conveyor 100 includes a belt conveyor 101 that conveys a work as shown by an outline arrow x, a roller conveyor 102 that conveys a work as shown by an outline arrow y,
A belt conveyor elevating mechanism (not shown) for raising and lowering the belt conveyor 101 as a whole.

[0006] The roller conveyor 102 is a roller table in which a plurality of rollers 103... The belt conveyor 101 pulls a belt 104 having a width narrow enough to pass between the adjacent rollers 103,
, And makes one of the pulleys 105 rotate forward and reverse through the drive shaft 106 to make a revolving motion.

[0005] The cross conveyor 100 carries a work as follows. First, the drive shaft 106 of the belt conveyor 101 is rotated as shown by an arrow a, and the belts 104 are moved in the directions of arrows b and b.
And receives the work from the direction of arrow x. Next, the belt conveyor 101 is lowered as shown by the arrow e, and the work is placed on the roller conveyor 102. Finally, the sheet is conveyed by the roller conveyor 102 in the direction of the white arrow y. In this manner, the cross conveyor 100 can transport a work in a right angle direction.

[0006]

FIG. 10 (a) and FIG. 10 (b)
FIG. 2 is an explanatory diagram for explaining a problem of a conventional cross conveyor. (A) shows a state where the work 107 is placed on the belt conveyor 101. Next, the belt conveyor 101 is lowered as shown by the arrow e.

FIG. 2B shows a state where the work 107 has been transferred to the roller conveyor 102. By driving the rollers 103... As shown by the arrow f, the work 107 is moved to the right in the figure as shown by the outlined arrow d. At this time, since the end 109 of the work 107 hits the roller 103, a collision sound may be generated or the conveyance may not be performed.

In particular, in a press forming line for a vehicle body, a pressed product has irregularities, and the raised portion hits the roller 103, so that the generation of a collision sound becomes remarkable, the transfer cannot be performed smoothly, and a work (pressed product) is formed. It may rotate, and various problems are expected.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cross conveyor device capable of smoothly transporting a work such as a press product having irregularities, and a press forming line including the cross conveyor device.

[0010]

In order to achieve the above object, a slat conveyor mechanism for transferring slats at a predetermined pitch to two rows of annular transporters and rotating the annular transporters by a driving pulley, The width of the conveyor is narrower than the inner dimension obtained by subtracting the width of the slat from the pitch of the belt, and the belt conveyor having a conveyor length smaller than the inner diameter obtained by subtracting the width of the annular conveyor from the interval between the two annular conveyors is the same as the slat pitch. A belt conveyor mechanism comprising a plurality of rows at a pitch and moving these belt conveyors up and down above and below the upper surface level of the slats by an elevating mechanism constitutes a cross conveyor device.

[0011] The belt conveyor mechanism is raised above the upper surface level of the slats, and the work is received by the belt conveyor. Next, the belt conveyor mechanism is lowered, and the belt conveyor is lowered vertically so as to remove the belt conveyor from between the slats, and the workpiece is placed on the slat. The work is conveyed in a direction perpendicular to the belt conveyor by the slat conveyor mechanism. At this time, since the slat itself moves horizontally, the unevenness on the lower surface of the work does not hit another slat.

According to a second aspect of the present invention, in a press forming line in which the cross conveyor device according to the first aspect is connected to an outlet of a work transfer conveyor of a press machine, a transfer direction of a belt conveyor mechanism matches a transfer direction of the transfer conveyor. Wherein the slat conveyor mechanism is arranged orthogonal to the transfer conveyor.

The work is received from the outlet of the transfer conveyor on the press machine side by the belt conveyor mechanism, and the work is placed on the slat conveyor mechanism by lowering the belt conveyor mechanism. When the slat conveyor mechanism is used in the press forming line, the slat on which the work is placed moves horizontally, so that the unevenness on the lower surface of the work does not hit the slat, and the work does not stay on the press forming line.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. The configuration of the cross conveyor device according to the present invention will be described with reference to FIG. 2 and the subsequent drawings, but the operation principle of the cross conveyor device will be described first for easy understanding.

FIG. 1 is an exploded perspective view of a cross conveyor device according to the present invention. In the cross conveyor device 1, slats 12... Are arranged at predetermined pitches P1 on timing belts 11, which are two rows of annular conveyors. Handover, timing belt 1
A slat conveyor mechanism 10 for rotating the slats 12 with the drive pulleys 13, 13, and a width CW of the belt conveyor 21 smaller than an inner dimension SI obtained by subtracting the width SW of the slat 12 from the pitch P1 of the slat 12, and two rows of timings A plurality of belt conveyors 21 having a conveyor length L3 smaller than the inner length L2 obtained by subtracting the width TW of the timing belt 11 from the interval L1 of the belts 11 and 11 at the same pitch P2 as the pitch P1 of the slats 12 are provided.
The belt conveyor mechanism 20 is configured to move up and down above and below the upper surface level S of the slats 12 by an elevating mechanism (not shown). In this figure, the belt conveyor mechanism 20 is described above, but correctly, the belt conveyor mechanism 20 is arranged inside the slat conveyor mechanism 10 as shown by a virtual line.

FIG. 2 is a plan view of a cross conveyor device according to the present invention, in which a belt conveyor 21 is connected to slats 12,1.
2 indicates that they are arranged within the inner dimension SI and inside the inner periphery L2 of the timing belt 11. Press forming line 23
The cross conveyor device 1 is connected to the outlets of the work transfer conveyors 24, 24 of the press machine, and the belt conveyor mechanism 2 is connected in the transfer direction g of the transfer conveyors 24, 24.
0 and the slat conveyor mechanism 10
Are arranged orthogonally to the transfer conveyors 24, 24. 25 is an intermediate conveyor, and 27 is a gantry.

FIG. 3 is a perspective view of the cross conveyor device according to the present invention. In the lower right part of the figure, X is the conveying direction of the transfer conveyor 24, Y is an axis orthogonal to X, and Z is a vertical axis orthogonal to X and Y. Axis. The slat conveyor mechanism 10 includes two rows of timing belts 11, 11 and slats 12,...
The drive pulleys 13, 13, the driven pulleys 14,... (See FIG. 1 for the other 14) for hanging the timing belt 11, the drive shaft 15 on which the drive pulley 13 is mounted, and the slat drive motor 16. 17 is a car, 18 is a track member,
19 is a side guide.

An appropriate tension is applied to the timing belt 11 by a tension adjusting mechanism (not shown). The annular conveyor is not limited to the timing belt, but may be, for example, a combination of a chain and a sprocket, and the material of the timing belt is not limited to rubber. In this figure, the belt conveyor mechanism 20 moves the transfer conveyors 24, 2 at the ascending limit.
At the same height as 4.

FIG. 4 is a perspective view of a main part of a belt conveyor mechanism according to the present invention. The belt conveyor mechanism 20 includes a lifting motor 31, a screw 32, a horizontal rack 33, a first pinion 34, a second pinion 35, and a vertical pinion 35. The lifting mechanism 30 including the rack 36 and the lifting frame 37 has frames 41, 41.
Indicates that the belt conveyor 21 is attached thereto.

By rotating the motor 31, the horizontal rack 33 is moved forward or backward, and the first and second pinions 3 are moved.
4 and 35 are rotated forward or backward, and the vertical rack 36 is moved up and down. Thus, the lifting frame 37 and the frames 41, 41
, The belt conveyor 21 can be moved up and down.

The belt conveyor 21 includes frames 41, 4
Are rotatably provided between the rollers 43, and a belt 43 is wound around these rollers 42.
Is a conveyor that can be rotated forward and reverse by a motor 44, a speed reducer 45, a shaft 46, gear sets 47 and 48, and a pulley 49. 51 is a guide and 52 is a guide receiver.

FIG. 5 is a sectional view taken along line 5-5 of FIG. 2, and the timing belt 11 has a peak 61 similar to the timing belt.
... and valleys 62, and these peaks 61 ...
By using the drive pulley 13 having the valleys 63... Peaks 64... That match the valleys 62... As drive wheels, the timing belt 11 can be rotated forward and backward without slipping. Indicates that you have done.

In the present embodiment, the slat 12 covers the channel 71 (with the web 72 facing upward) extending in the front and back direction of the drawing with a resin layer 73, and attaches the channel 71 to the piece 7.
4, a structure fixed to the timing belt 11 with bolts 75 and nuts 76 was used.

FIG. 6 is a sectional view taken along the line 6-6 in FIG. 2. A groove 77 is provided in the drive pulley 13 and a nut 76 is accommodated in the groove 77 to avoid interference between the nut 76 and the drive pulley 13. Indicates that you have done so.

A belt-shaped receiving plate 81 and a holding plate 82 are attached to the gantry 27, and the receiving plate 81 and the holding plate 82
A groove 83 is formed. A support piece 84 was welded to both ends of the channel 71 (the right end was omitted), the wheel 17 was attached to the support piece 84, and the vehicle was mounted on the V-groove 83 to run. Thus, even if a downward load is applied to the slat 12, the slat 12 does not have to worry about sinking.

The operation of the cross conveyor device described above will be described below. FIGS. 7A and 7B are first operation diagrams of the cross conveyor device according to the present invention. (A) shows a state in which the work W is transported in the X-axis direction. Belt conveyor 2
1 stands by above the upper surface level S (marked with １２) of the slat 12 at the receiving position (ascending limit) of the distance Z1 by the lifting mechanism 30 and the frame 41. Further, the fourteen belts 43 make a revolving motion in the direction of the arrow by the belt driving motor 44.

The procedure of transport in the X-axis direction is as follows.
First, the work W formed by the press machine is placed on the transfer conveyor 24. The transfer conveyor 24 conveys the work W to the downstream while the belt circulates in the direction of the arrow. Next, the downstream belt conveyor mechanism 20 picks up the work W, carries it in the X-axis direction as indicated by the imaginary line, and receives a single product or a plurality of products. At this time, the side guide 19 receives the work W and prevents the work W from falling. When the number of works W reaches a predetermined number, a quantity detecting means (not shown) outputs a signal, and the belt driving motor 44 stops.

After the belt driving motor 44 is stopped, when the lifting / lowering motor 31 is started by this stop signal, the screw 32
, The horizontal rack 33 slides in the direction of the arrow, the second pinion 35 rotates in the direction of the arrow, and the vertical rack 36 moves downward in the Z-axis direction. This vertical rack 36
As a result, the elevating frame 37 descends as indicated by the arrow while being guided by the guide 51, and lowers the upper surface of the belt conveyor 21 below the upper surface level S of the slats 12.

(B) shows the conveyance in the Z-axis direction. The belt conveyor 21 reaches a position at a distance Z2 below the upper surface level S of the slats 12, and the motor 31 is stopped by a signal from a lower limit position detecting means (not shown). At this time, the work W is placed on the upper surface of the slat conveyor mechanism 10 while leaving the work W as shown by a solid line.

FIG. 8 is a second operation view of the cross conveyor device according to the present invention, and shows conveyance in the Y-axis direction. When the slat drive motor 16 is started by the lower limit position detection signal of the belt conveyor mechanism 20 and the drive pulley 13 rotates, the timing belt 11 makes a revolving motion, and the slats 12 move horizontally in the Y-axis direction as indicated by an arrow. I do. Slat 1
Since the workpieces 2a and 12c are horizontally moved to transport the work W from the placement position A to the end B as indicated by phantom lines, the unevenness on the lower surface of the work W does not hit the slats 12b and the other slats 12, and the vertical movement is large. No movement, lateral movement, snagging or stagnation occurs.

When the entire work W is transferred to the intermediate conveyor 25 in the Y-axis direction, and the work W is no longer present on the slats 12,..., The motor 16 of the slat conveyor mechanism 10 stops. Explaining an example of a method of controlling the motor 16, first, a work presence / absence detection means (not shown) checks the presence / absence of the work W on the slats 12,... And outputs a signal if there is no work W. Next, upon receiving this signal, the slat position detecting means (not shown) detects whether the slats 12... Are at a predetermined position, and outputs a signal to stop the motor 16 if the slats 12 are at the predetermined position. By controlling in this manner, the slats 12 are stationary at a predetermined position and stand by, so that the slats 12 do not interfere with the slats 12 when the belt conveyor 21 moves up and down, and Dimension SI
The belt conveyor 21 having a smaller width CW can be moved up and down by the elevating mechanism.

When one cycle is completed and the slat conveyor mechanism 10 is in the standby state, the belt conveyor mechanism 20 moves up, receives the workpiece W again at the ascending limit receiving position, and similarly starts the second cycle. I do. By continuing this cycle, the press forming line 23 conveys the work W from the press machine to the downstream.

When the cross conveyor device 1 is connected to the transfer conveyor of the press forming line 23, the slats 12a and 12c of the slat conveyor mechanism 10 move horizontally to move the workpiece W.
Is transported from the mounting position A to the terminal end B as shown by the imaginary line, so that the unevenness on the lower surface of the work W does not hit the slats 12b and other slats 12, and the work W can be stably carried in the Y-axis direction. Since the cross conveyor device 1 is arranged at the corner of the press molding line 23, the work can be transported at right angles without stagnation from the X-axis direction (see FIG. 3) to the Y-axis direction.

Although the slat conveyor mechanism 10 shown in the embodiment of the present invention has two timing belts 11 arranged at both ends, it is also possible to arrange only one timing belt 11 at the center. It is also possible to arrange a belt conveyor on both sides of this central timing belt and raise and lower it. Further, the number of the belt conveyors 21 of the belt conveyor mechanism 20 is not limited to 14, and the way of increase / decrease and arrangement (for example, arrangement every other) is arbitrary. Furthermore, the lifting mechanism 30 in FIG. 4 is an example, and the lifting mechanism 30 is not limited to this. For example, the ball screw unit may be directly moved up and down, or may be replaced with a hydraulic / pneumatic cylinder, a link mechanism, a screw mechanism, or the like. Also, the type of guide is arbitrary. Although the cross conveyor device 1 is connected to the press forming line 23 in FIG. 3, the cross conveyor device 1 is not limited to the press forming line, but can be used for various transport devices.

[0035]

According to the present invention, the following effects are exhibited by the above configuration. According to the first aspect, the belt conveyor mechanism is raised above the upper surface level of the slat, and the workpiece is received by the belt conveyor. Next, the belt conveyor mechanism is lowered, and the belt conveyor is lowered vertically so as to remove the belt conveyor from between the slats, and the workpiece is placed on the slat. The work is conveyed in a direction perpendicular to the belt conveyor by the slat conveyor mechanism. At this time, since the slat itself moves horizontally, the unevenness on the lower surface of the work does not hit another slat. As a result, no vertical movement or lateral movement occurs, and no deformation or damage is given to the work. Accordingly, the workpiece can be transported at a high speed in the right angle direction, and the workpiece can be transported stably. At the same time, transport without stagnation can be continued repeatedly.

In the second aspect, the work is received from the transfer conveyor on the press machine side by the belt conveyor mechanism, and the work is placed on the slat conveyor mechanism by lowering the belt conveyor mechanism. When the slat conveyor mechanism is used in the press forming line, the slat on which the work is placed moves horizontally, so that the unevenness on the lower surface of the work does not hit other slats, and the work does not stay on the press forming line. As a result, the speed of the entire line can be increased and the production efficiency of the press machine can be increased without stopping or decelerating the press molding line.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a cross conveyor device according to the present invention.

FIG. 2 is a plan view of a cross conveyor device according to the present invention.

FIG. 3 is a perspective view of a cross conveyor device according to the present invention.

FIG. 4 is a perspective view of a main part of the belt conveyor mechanism according to the present invention.

FIG. 5 is a sectional view taken along line 5-5 of FIG. 2;

FIG. 6 is a sectional view taken along line 6-6 in FIG. 2;

FIG. 7 is a first operational view of the cross conveyor device according to the present invention.

FIG. 8 is a second operational view of the cross conveyor device according to the present invention.

FIG. 9 is a perspective view of a main part illustrating an example of a conventional cross conveyor.

FIG. 10 is an explanatory view for explaining a problem of a conventional cross conveyor.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Cross conveyor apparatus, 10 ... Slat conveyor mechanism, 11 ... Annular conveyance body (timing belt), 12 ... Slat, 13 ... Drive pulley, 20 ... Belt conveyor mechanism, 21 ... Belt conveyor, 23 ... Press forming line,
24: transfer conveyor, 30: elevating mechanism, CW: width of belt conveyor, g: transfer direction of transfer conveyor, h: transfer direction of belt conveyor mechanism, L1: interval between annular transfer bodies (interval of timing belt), L2 ... Inner, L3: Conveyor length, P1: Predetermined pitch of slats, P2: Predetermined pitch of belt conveyor, S: Upper surface level, SI: Internal dimensions, S
W: width of the slat, TW: width of the annular conveyor (width of the timing belt).

 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hiroyuki Shinda 1-10-1 Shinsayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. F-term (reference) 3F016 AA01 BA02 BA05 CC01

Claims (2)

[Claims] 1. A slat conveyor mechanism for transferring slats at a predetermined pitch to two rows of annular transporters and rotating the annular transporters by a drive pulley, and a width of the conveyor from an inner dimension obtained by subtracting a slat width from a slat pitch. Is provided with a plurality of belt conveyors having a conveyor length smaller than the inner diameter obtained by subtracting the width of the annular conveyor from the interval between the two rows of annular conveyors at the same pitch as the pitch of the slats. A cross conveyor device comprising: a belt conveyor mechanism that is moved up and down by an elevating mechanism above and below an upper surface level. 2. A press forming line in which the cross conveyor device according to claim 1 is connected to an outlet of a work transfer conveyor of a press machine, wherein a transfer direction of the belt conveyor mechanism matches a transfer direction of the transfer conveyor. A press forming line in which a slat conveyor mechanism is arranged orthogonally to a transfer conveyor.