JPH0394937A - Intermediate conveying device in press - Google Patents

Abstract

PURPOSE:To surely convey a work regardless of material quality or shape thereof by synchronously reciprocating a slider with a carrier reciprocatedly shiftable in the horizontal direction and also conveying a work while holding the work between the carrier and the slider slidable in the vertical direction to the carrier. CONSTITUTION:After sucking a blank to a vacuum cup 52A by ascending a cylinder 53 for lifting, at the time of descending the cylinder 53, the blank is sucked to vacuum cup of the slider 41. After shifting an advancing/retreating lever 27 to the left direction, by shifting a piston rod of the slider 41 to the left direction, levers 43A, 43B are swung to the clockwise direction and the slider 41 is ascended. The blank is made to the condition of being held with the vacuum cup and a pressing piece 26 in the carrier 13. At the time of shifting the carrier 13 to the right direction by driving a motor 19, the slider 41 is shifted and the blank is conveyed from a blank receiving stage S0 to a first stage S1. The slider 41 is descended and the blank is left to the fixed chute 30 and sucked to the vacuum cup.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an intermediate conveyance device for a press. For example, it relates to an intermediate conveyance device for a press that delivers a blank punched by a planking press to a feed bar of a transfer press. [Prior Art] For example, when a blank punched with a planking press is to be continuously pressed with a transfer press, an intermediate conveyor is used to transport the blank punched with a planking press to the feed bar of the transfer press. equipment is provided.

Conventional intermediate conveyance devices have a configuration in which the distance between the processing position of the planking press and the blank receiving position of the feed bar is divided into equal parts, and the blanks are conveyed sequentially using this distance as one pitch of conveyance stroke. That is, by equipping a carrier with a suction device such as a magnet, vacuum cup, or chest jaw, which attracts the blank at intervals of the feed stroke, and moving the carrier back and forth by the conveyance stroke, the blank is punched out with a planking press. The blanks are conveyed by 1m feed stroke while being sucked by the suction tool, and finally delivered to the feed bar. [Problem to be solved by the invention] However, recently, the materials and shapes of blanks have become diverse and diverse, so the above-mentioned suction tools have
It is becoming impossible to handle these materials and shapes. For example, in the case of a magnet, since the magnetic force of the magnet is used to attract the blank, the material of the blank is limited to magnetic materials. Therefore, it cannot be applied to non-magnetic materials. In addition, in the case of a vacuum cup, the blank is adsorbed using air vacuum pressure, so it has the advantage that it is not limited to the material of the blank. The position needs to be adjusted slightly. Furthermore, in the case of grip jaws, since the outer periphery of the blank is supported by the grip jaws, for example, in the case of a thin plate-shaped blank, the outer periphery of the blank bends downward and there is a problem that the outer periphery cannot be supported accurately. be.

SUMMARY OF THE INVENTION An object of the present invention is to provide an intermediate conveyance device that can solve these conventional problems and transport a workpiece stably and reliably regardless of the material or shape of the workpiece. ．． [A Thousand Steps to Solve the Problem] Therefore, in the present invention, between a carrier that can reciprocate in the horizontal direction and a slider that can reciprocate in synchronization with this carrier and can also move in the vertical direction with respect to the carrier. It is constructed horizontally so that the workpiece can be transported while being supported.

Specifically, a carrier that can reciprocate horizontally at a constant pitch and a slider that can reciprocate horizontally in synchronization with the carrier and are connected to the carrier so that they can move vertically relative to each other are connected to a fixed chute. A plurality of vacuum cups are provided on the slider fllll at regular pitch intervals along the reciprocating direction, and the workpieces adsorbed by the vacuum cups are moved toward the vacuum cups on the carrier side. It is characterized by providing a pressing member for pressing.

After this, the carrier or the other horizontal direction (return direction)
When the carrier moves to , the slider also moves in synchronization with the carrier and returns to its original position.

Therefore, when the above-described operation is repeated, the workpiece is conveyed at a constant pitch.

[Function 1] When the slider rises, the workpiece attracted to the vacuum cup of the slider is held between the vacuum cup and the pressing member of the carrier. From this state, when the carrier moves in one horizontal direction (advanced direction), the slider also moves in synchronization with the carrier, so the workpiece is transported while being held between the vacuum cup and the pressing member. When the slider descends after the carrier moves at a certain pitch, the workpiece attracted to the vacuum cup is lowered onto the fixed chute, and then remains on the fixed chute as the slider descends. [Example] A practical example of the present invention will be explained below based on the drawings. Figure 1 shows the entire intermediate conveyance device #1 of this embodiment. In the figure, a carrier rail 11 is provided on a frame (not shown), and a guide well 12 is formed in the carrier rail 11 along the horizontal direction. The guide l2 includes rollers 14A. 14B is rotatably engaged. Therefore, the carrier 13 is moved by the rollers 14A. 14B so that it can reciprocate horizontally. career 13
A connecting member 15 is fixed to the top surface. The connecting member 15 is connected to a timing belt 17 provided parallel to the reciprocating direction of the carrier 13 via a pair of timing gears 1.6A and 16B. Rotation from one servo motor capable of forward and reverse rotation is transmitted via a timing belt 20 to another timing gear 8 provided coaxially with the timing gear 16A. Therefore, when the servo motor 19 rotates forward and backward within a predetermined rotation angle range,
The carrier 13 is moved back and forth at a constant pitch. In other words,
Advance return is operated. Here, the conveyance stroke of the advance/return operation can be varied by the rotation angle of one servo motor. Here, the length is set to be equal to 6 equal parts of the distance from the blank receiving stage S0, which receives the blank punched by the planking press, to the blank delivery stage S6, which does not deliver the blank to the feed bar of the transfer press. , a hollow cylindrical pressing cylinder 23 and two pressing tools 24A. 24B is installed on the same horizontal plane and slightly above the fixed chute 30. The pressing cylinder 23 has at least a first
It is formed to have a length reaching from the stage S1 to the third stage S, and a reciprocating rod 27 having a pressing piece 26 at the tip is housed so as to be movable horizontally. Advance/retreat rod 2
7 is moved forward and backward by a cylinder 28 fixed on the press cylinder 23. Further, each pressing tool 24A24B has a spring 29A. Although it is always urged downward by the spring 29B, it is structured so that it can be displaced upward against the springs 29A and 29B when an upward force is applied. Here, the pressing cylinder 23, pressing tools 24A, 24. B and the pressing piece 26 constitute a pressing member.

Further, a slider 41 is connected to the carrier 13 so as to be movable in the horizontal direction and reciprocated in the horizontal direction in synchronization with the carrier 13, opposite to the carrier l3, with the fixed chute 30 interposed therebetween. . That is, as shown in FIG. 2, a shaft 31 that is not vertically protruded downward from the bottom surface of the carrier 13 is provided with a thrust bearing 32 and a spherical bearing 33 that are movable in the axial direction of the shaft 31. Either the lower end of the slider 41 or the upper end of the fixed connecting member 34 is supported. A guide f142 is formed on the slider 41 and extends in the horizontal direction. The guide lever 42 has a lever l13A,
4.3B rollers 44A, 44. B
or rotatably engaged. Each rehar 43A, 43B
is rotatably supported by the base 46 via shafts 45A and 45B at approximately the middle portion thereof, and is connected at the lower end by a link 47. A piston rod of a cylinder 48 fixed to the base 46 is connected to the lower end of the lever 43B. Therefore, when the piston rod of the cylinder 48 moves back and forth, the lever 43A. 43B is the shaft 45A.
Since it swings about 45B as a fulcrum, the slider l11 is moved up and down.

Further, as shown in FIG. 3, the sliter 41 includes a plurality of vacuum cavities 51A to 51 on both sides of the fixed chute 30. F is attached at intervals of the conveyance stroke along the direction of photographing and conveying the blank. Similarly, the fixed chute 30 has bars Ii corresponding to the positions of the second to fifth stages 82 to S, as shown in FIGS. 3 and 4.
- Emukatsu 152B to 52F are installed respectively. Behind the rear ends of the fixed shoes 1 to 30, that is, the blank receiving stage S. A vacuum cup 52A, which is raised and lowered by a lifting cylinder 53, is provided between the vacuum cups 51A provided on both sides 1 and 11 of the slider 41 at a position corresponding to the slider 41 (see FIG. 1).
q).

Among these vacuum cups, Zuraida 41 fl
llJ and a blank receiving stage S. and vacuum cutters 51A to 5 corresponding to the first to third stages 81 to S3 1. As for D, as shown in FIG. 6, it is connected to a vacuum bomb (not shown) via a vacuum cup vertical movement device 54 provided on the sliter 41. The vacuum force Vug-E lowering device 54 moves the vacuum cup 51 by a spring housed inside.
If A to 51D are constantly biased upward or a downward force is applied, the vacuum cag 51A resists the sublink.
It has a structure that allows it to be displaced downward by ~51D. The remaining vacuum cups 51E, 51F and 52A to 52F are each connected to the vacuum pump via a support block 55, as shown in FIG. In addition, in FIGS. 3 to 6, 56 is the auxiliary fixing shoe 1. The auxiliary fixed chute 56 is for receiving both sides of a wide blank. Next, the operation of this embodiment will be explained. First, in a state in which the advancement/retraction rod 27 is moved to the right in FIG. 1 by the operation of the cylinder 28, the lifting cylinder 5
3 is raised to cause the vacuum cup 52A to adsorb the blank punched by the planking press, and then the lifting cylinder 53 is lowered. Then, the blank attracted to the vacuum cup 52A is transferred to the sliver 41.
vacuum cup 51A. Here, the advance/retreat lever 27 is moved to the first position by the operation of the cylinder 28.
After moving to the left in the figure, when the piston rod of the cylinder 48 is moved to the left in FIG.
3B is rotated clockwise in FIG. 1 using shafts 45A and 45B as fulcrums. Then, the slider 41 is raised. In other words, when the slider 41 is lifted, the lever 43A. The movement of the slider 41 in the transport direction is restricted because a force is applied in the transport direction due to the rotation of the slider 43B, or because the slider 41 is connected to the shaft 31 of the carrier 13. Therefore,
It moves while sliding on the rollers 44A, 44B of the levers 43A, 43B or the guide eraser 42 of the slider 41.

When the slider 41 is turned on, the vacuum comp 5
The blank adsorbed to 1A is placed in its vacuum cup 5.
1A and the pressing piece 26 of the carrier 13. At this time, since the vacuum cup 51A is urged upward by the vacuum cup vertical movement device 54, it is supported with a predetermined pressure.

Next, when the carrier 13 is moved to the right in FIG.
, 43B as a guide, so that the blank remains supported at the blank receiving stage S. It is transported to the first stage S1.

Eventually, after the carrier 13 reaches the first stage s1,
When the piston rod of the cylinder 48 is moved to the right in FIG. 1, the levers 43A, 43B are rotated counterclockwise in FIG. 1 about the shafts 45A, 45B as fulcrums. Then, the slider 41 is lowered. In other words, it will be towned. Here, the blank that had been attracted to the vacuum cutter 51A is left on the fixed chute 3o as the slider 41 descends, and is attracted to the vacuum cup 52B provided on the fixed chute 3o. Next, when the carrier 13 is moved to the left in FIG. 1 by driving one servo motor, that is, when it is returned, the slider 41 is moved along with the carrier 13 to the lever 43A.
43B and is moved to the original position using rollers 44A and 44B as guides. In this way, the blank conveyed to the first stage S1 is transferred to the vacuum cup 5 in the same manner.
1B~5 iF 2nd~5th stage S2,S,
Then, the blanks are sequentially conveyed to the blank delivery stage S6, and finally delivered to the feed bar. Therefore, according to this embodiment, the blank is conveyed while being sandwiched between the carrier 13 that reciprocates in the horizontal direction and the slider 41 that reciprocates in the horizontal direction in synchronization with the carrier 13 and is movable in the vertical direction. As a result, the blank can be stably and reliably transported regardless of the material or shape of the blank. #J can transport two stacked blanks like vibration damping plates.

In addition, vacuum cups 51A to 51F are attached to the slider 41 at regular pitch intervals along the conveyance direction of the blank.
On the other hand, the carrier 13 is equipped with a pressing cylinder 23, pressing tools 24A, j4B, and a pressing piece 26 for pressing the blanks adsorbed to the vacuum cups 51A to 51F. It is possible to convey the material while adsorbing it to the material and holding it under constant pressure. In addition, vacuum cups 528 to 52F are also provided at each station 81 to S6 position of the fixed chute 30, so that the blanks placed at each station 81 to S6 will not be misaligned due to vibration, and will be stable. Transport can be carried out. [Effects of the Invention] As described above, according to the present invention, there is a gap between the carrier that can reciprocate in the horizontal direction and the sliver that can reciprocate in synchronization with the carrier and can move in the vertical direction with respect to the carrier. Since the workpiece is transported while being supported, the workpiece can be reliably transported regardless of the material or shape of the workpiece.

Figure 2 is a cross-sectional view taken along the line ■■ in Figure 1.
Figure 3 is a view seen from the ■-■ line direction in Figure I, Figure 4 is a front view showing the fixed chute, Figure 5 is a sectional view taken along the line V-V in Figure 3, and Figure 6 is the It is a sectional view taken along the line Vl-Vl in the figure.

13...Carrier, 23...Press tube (pressing member), 24A. 24.8... Pressing tool (pressing member), 26...
- Pressing piece (pressing member), 30... Fixed chute, 41... Slider, 51A to 51F... Vacuum cup.

Claims (1)

[Claims] (1) A carrier that can reciprocate horizontally at a constant pitch and a slider that can reciprocate horizontally in synchronization with the carrier and are connected to the carrier so that they can move vertically relative to each other are sandwiched between a fixed chute. A plurality of vacuum cups are disposed vertically to face each other, and a plurality of vacuum cups are provided on the slider side at regular pitch intervals along the reciprocating direction, and a workpiece attracted to the vacuum cups is pressed on the carrier side in the direction of the vacuum cups. An intermediate conveyance device for a press, characterized in that it is provided with a pressing member.