JPS59125235A - Supporting device for gripping means in automatic taking- out device of press formed article - Google Patents

Abstract

PURPOSE:To make an application range wider, the number of spare parts less and exchange easy in an automatic taking-out device for press formed articles by fitting and connecting the shaft of forward-backward moving devices and gripping means which are respectively actuated by pneumatic cylinders by means of an arm and fixing the same by fixing metals. CONSTITUTION:A sliding connecting fixture 44 provided in forward-backward moving devices 25-44 fixed to the guide rod 23 of an iron band 21 and a mounting fixture 52 of gripping means 52-57 are fixed by means of an arm 48. The forward and backward movement by a cylinder 34 and the opening and closing of grasping pieces 57 by a cylinder 54 are accomplished by air selector valves 37, 40 and separately provided solenoid valve 58. The connecting fixture 44 and the mounting fixture 52 have the same construction and size, and are attached and detached to and from each other by an engaging piece 44 having a notch 46 and an engaging groove 49 of the arm 48. The piece 44 is fixed by means of a fixing pin 51. The application range is considerably widened simply by providing the arms 48 of various lengths and shapes under the above-mentioned mechanism.

Description

[Detailed Description of the Invention] Devices that automatically take out parts formed in a press machine using a gripping tool that moves back and forth are widely used.
When molding various parts with one press machine, special gripping tools and attachment members are required depending on the size and shape of the molded product.

Figure 1 shows an example of a conventional press-formed product automatic take-out device, in which a mounting bracket (2) is attached to the lower end of an iron/do (1) installed at a key point of a press machine (not shown). The stopper (4), which faces in the longitudinal direction (approximately the center of the horizontal guide rod (3)) is fixed, and is fixed to the front end (left end in Figure 1) of the guide rod (3). Fixed cam facing (
5) are installed in succession.

Immediately before the mounting bracket (2), the guide rod (3) has the front end of the air cylinder (6) facing forward attached to the support tube (
6a), and its piston rod (6b) is connected to the rear end of the scissor-like gripper (7), which faces forward and is normally open. There is.

A sliding tube (9) facing in the front-rear direction and connected to the rear upper part of the upper piece (8) is fitted into the guide rod (3) immediately before the support tube (6a).

Similarly, a lower piece (
The middle part of the lower piece (10) is pivotally attached (10a), and a curved piece (+1) facing rearward and upward is connected to the rear part of the lower piece (10).

The gripping tool of the above-mentioned device (the force moves back and forth along the guide rod (3) by the protrusion and retraction of the piston rod (6b), and when it reaches the front corner as shown by the imaginary line, the lower piece 00) Curved piece (1
1) comes into contact with the cam F51 of the stopper (4), rotates upward around the pivot (10a), and clamps the press-formed product between the front ends of both the upper and lower pieces t8) flol.

However, in this case, it is necessary to prepare a wide variety of guide rods (3), gripping tools (7), etc. corresponding to press-formed products, and to use them by replacing them depending on the molded product.

As a result, the amount of inventory increases, which is uneconomical, and since these members are heavy (1), the replacement work is troublesome and requires a considerable amount of time.

Moreover, when the length of the gripping tool (7) is long, there is a fear that the gripping force of the molded product may be weakened.

An object of the present invention is to provide a gripper support device for an automatic take-out device that eliminates the above-mentioned drawbacks.
Hereinafter, a detailed description will be given based on the embodiments shown in FIG. 2 and subsequent figures.

Figure 2 shows an automatic take-out device using the device of the present invention.
6 and 4 through the mounting bracket (22).
As shown in the figure, a horizontal guide rod C431 facing in the front-rear direction and having a convex front shape is fixed.

Guide rod Gl! 3) The lower wide part is facing left and right,
In addition, a large number of locking holes (241) arranged in front and back at equal intervals are provided.

As clearly shown in FIG. 4, a sliding fitting C25) is fitted and suspended on the guide rod 123) so as to be slidable back and forth.

At the bottom of each left and right side of the sliding fitting 125), there are a pair of front and rear wire holes (
2b) 26) is drilled.

Each wire hole t2B) has a locking tube t27 with a bottom facing outward.
The inner end of the opening of ) is screwed together, and the locking pin 07) is slidably inserted into the locking tube 07).A coaxial pin shaft @ is connected to the outer end of the locking pin;y+28). There is.

A pair of front and rear pin shafts (29) (2ω outer ends are connected to each locking cylinder (
27), and are connected to each other by connecting pieces (to).

Each locking pin (281) is normally operated by the locking hole (281) of the guide rod c!
2 and engage with each other, and pull the connecting rod outward against the spring 6υ to remove it from the locking hole (241).

(32 is the above-mentioned both locking tubes (2' [71 and connecting rod C311
1) is attached to the sliding fitting (25) so as to surround the U-shaped planar handle, and by grasping it with your hand together with the connecting piece ('! It can be removed and moved back and forth along the guide rod (23).

As shown in Figure 2, below the guide rod (23),
The sliding fitting I25) includes, in order from the top, a sliding rod (33) facing in the front-rear direction and a first air cylinder 8 facing forward.
The front ends of the piston rod (34a) of the sliding rod (33) and the air cylinder (34) are fixed together, and the front ends of the piston rod (34a) of the air cylinder (34) are
They are connected using a connecting metal fitting 0ω.

There is a dog (
36) is fixed, and at the rear of the right side inside the sliding fitting, as shown schematically in FIG. Compressed air switching valve (3 valves are installed.

In addition, at the rear of the right side of the air cylinder (311), as schematically shown in FIG. The second spring (39)
A compressed air switching valve (40) is installed.

As shown in Figures 5 to 7, the lower end of the connecting fitting (35) has a circular mounting hole (4υ) facing in the front-rear direction, and a mounting hole (4υ that faces left and right above 4υ and is located at the bottom of the center A square hole (42) in the left and right direction intersects with the mounting hole (4I),
At the upper right of the mounting hole (4I), open the square hole (42) from the front.
) is drilled with a wire hole (43) that communicates with the wire hole (43).

Although not shown in the drawings, for convenience in processing, the connecting fitting 05) is divided into two parts, an upper and a lower part, at the square hole (42).

A horizontally long retaining piece (44) is loosely fitted into the square hole (42).

At both ends of the retaining piece (44), hanging pieces (4) (45) are connected with a slight gap between them and the side surfaces of the connecting fitting t35), and the retaining piece (44J) It can slide left and right by this distance.

On the lower center surface of the retaining piece (4(A)), when the retaining piece (44) is moved to the left limit in Figure 7, there is a circular notch (46) that aligns with the mounting hole (4υ). Also in the upper right corner,
When the fixation piece (44) is placed in both the left and right eyes, the above-mentioned line hole (
A locking hole (47) (4η) having a diameter smaller than that of the wire hole (43) is bored, which matches the wire hole (43), respectively.

A plurality of retaining grooves (49) facing in the left-right direction are cut at appropriate intervals in the front-back direction on the upper surface of the rear end of the arm (fence) facing in the front-rear direction.

This arm (fence) is made by fitting the rear part of the arm (fence) into the mounting hole (4υ) of the connecting bracket (351) with the engagement piece (44) as the left limit, and moving the engagement piece (44) to the left limit. After the retaining piece (44J) was engaged with the engagement groove (49), the fixing screw (50) screwed into the wire hole (43) was tightened, and the retaining piece (44J) was connected to the tip of the fixing screw (50). , coaxial fixing pin 6]) can be attached to the left locking hole (471) so that it cannot move back and forth and cannot rotate, and can be removed by the reverse operation. .

The front end of the arm (48) and the connecting fitting (3)
A second air cylinder 6 facing the front of the gripping tool (53) and a case mark are removably attached to the gripping tool (53) with a device similar to the connection part 5) via a mounting bracket 52).

At the tip of the piston rod (54a) of the second air cylinder 54), there is a pair of upper and lower links (56) (56) facing forward.
) is pivoted.

At the front end of both links 56) (5G), there are bent portions that have a side face shape and are close to each other and face each other.
A pair of upper and lower clamping pieces (57) (
57) is pivoted at its rear end.

Therefore, when the piston rod (54a) moves forward, the tips of the clamping pieces (57) e57) come close to clamp the press forming, as shown by the imaginary lines in FIG.

Figures 8 to 10 show the passage of compressed air during operation of the above-mentioned automatic press-molded product take-out device, and 68) in the figure is electrically interlocked with the upper die of the press machine. (59) indicates the compressed air source.

FIG. 8 shows a state in which the gripping tool 63) is retracted and on standby as shown in FIG. 2, and the extension sides of both the first and second air cylinders (34) and (54) are Solenoid valve 5
81 and the first switching valve (3'O) communicate with the atmosphere, and the shortened side communicates with the compressed air source (59),
Both air sills (34) and (54) have been shortened, and the gripping tool (53) has retreated to form both gripping pieces 57) (57).
) is open.

At this time, the second switching valve (40) is in an off state.

When the upper die of the press (not shown) rises to a predetermined position, the solenoid valve (58) switches to the right in the drawing, as shown in Figure 9, and the shortened side of the first air cylinder (34) is exposed to the atmosphere. The extension side is connected to the compressed air source (59).
It will be communicated to. Therefore, the first air cylinder (34) expands, the gripping tool (53) and the sliding rod (33) move forward,
When the front corner is reached, the dog 06) contacts the first switching valve (37) and switches it to the left in the drawing.

Then, the shortened side of the second air cylinder (54) communicates with the atmosphere, and the extended side communicates with the compressed air source 59), so the second air cylinder (54) expands.
Both clamping pieces 57)C'5 of the gripping tool (53) close and clamp the press-formed product in the press machine.

When the upper mold of the press further moves, as shown in FIG. 10, the solenoid valve 581 is switched again to the left in the drawing, so that the extended side of the first air cylinder (34) communicates with the atmosphere, and the contracted side communicates with the atmosphere. Since it communicates with the compressed air source (59), the first air cylinder (34) is shortened and the gripper (5
3) While holding the press-formed product, press the sliding rod (33)
retreat with

Retreating dog (3G) is single-handed/: -(38)
When it comes into contact with the valve, the second switching piece (40) switches downward in the drawing and enters the communication state, sending the compressed air that has passed through one drop of the solenoid valve to the first switching valve (37) and sending it to the left side in the drawing. Switch to.

Accordingly, the second air cylinder (5) is shortened and both clamping pieces 157 of the gripping tool (53) C5η open, and the press-formed product that was clamped is abandoned at a predetermined location.

After passing the dog (36), the second switching valve (40) is returned to its original state by the biasing force of the compression spring (39), and one cycle of the press-molded product take-out operation is completed, and the entire device is operated as shown in FIG. By returning to the state shown and repeating the above-described operations, the molded product can be automatically taken out in conjunction with the processing operation of the press.

In addition, in the above explanation, the press-formed product is used as a gripper (
53), but the gripping tool 5
Instead of 3), a suction tool equipped with a suction cup may be attached to the arm and connected to a compressed air source to suck and remove the molded product.

According to this automatic take-out device, multiple arms (decoys) of different lengths are prepared, and depending on the size and shape of the molded product,
As mentioned above, loosen the fixing screw of the connecting part and remove the engaging plate (
44) can be replaced easily and in a short time by an extremely simple operation of sliding, which is convenient because it saves labor and improves the operating time of the press machine.

Further, by providing a plurality of engagement grooves (49) in the arm (48), the front and back position of one arm (the decoy, the clamping piece 67) can be changed to some extent, which is convenient. .

Furthermore, it is also easy to replace the gripper t53) with a different one, if necessary.

In the illustrated embodiment, the sliding fitting (251 and the guide rod 3) are connected by operating the connecting rod (251).
The sliding rod (33), the first air cylinder (34), and the arm (4
8) as well as the gripper (53) can be moved back and forth without changing their relative positions, which makes their versatility remarkable.

[Brief explanation of drawings]

FIG. 1 is a side view showing an example of a conventional press-formed product automatic take-out device, FIG. 2 is a side view of a press-formed product automatic take-out device including an embodiment of the device of the present invention, and FIG. 2 is an enlarged sectional view taken along the line T in FIG. 2, FIG. 4 is a sectional view taken along the rv-rv line in FIG. 7 is a vertical cross-sectional view taken along the line ■-■ I in FIG. 5. FIG. 7 is a cross-sectional view taken along the vertical line ■-■ I in FIG. FIG. 9 is a block diagram showing the passage of compressed air in the case where the press-formed product is gripped; FIG. It is a block diagram showing the passage route of the compressed air in . (1) Iron hand (2) Mounting bracket (3) Guide rod
(4) Stroke ξ - (5) Fixed cam
(6) Air cylinder (6a) support tube (
6b) Piston rod (7) Grip (8) Upper piece (9) Sliding tube θ0) Lower piece Uυ curved piece Sentry) Iron nod (2 mounting bracket) (23) Guide rod (2 (a) Locking hole
(251 sliding metal fitting) base hole (2η locking tube c78) locking pin (29) pin - (30) connecting piece (31) compression spring c3 handles
(to) Sliding rod c34) 1st air cylinder (54a) Piston rod (39 connecting fitting (36) dog G7) 1st compressed air switching valve single-handed lever'
- Horizontal compression spring (40) Second compressed air switching valve (4I) mounting hole (42) Square hole (431 screw hole) (44) Engagement piece (45) Hanging piece
(46) Notch (47) Locking hole (48) Arm (49) Engagement groove 60) Fixing pin 5I) Fixing pin (52) Mounting bracket 53) Grip
54) Second air cylinder (54a) piston rod
65) Case (56) Link 6η clamping piece (
58) Solenoid valve 59) Compressed air source patent applicant
Agent Patent Attorney So Takezawa −',:,':,:'
：、、、： 、、 'Figure 8 Figure 9 Figure 10

Claims (4)

[Claims] (1) A device that advances and retreats toward the press machine in conjunction with the processing operation of the press machine and a gripping tool for the press-formed product are connected, and a retaining groove perpendicular to the axial direction is cut near the end. an arm that faces in the front-rear direction; and a connecting fitting that supports the end of the arm, into which the end of the arm can be fitted, and which engages a part of the member perpendicular to the axis of the arm with the arm; 1. A gripping tool support device for an automatic press-formed product take-out device, comprising a connecting metal fitting that prevents forward and backward movement and rotation of an arm by fitting together. (2) A through hole is provided on the side of the mounting hole in which the end of the arm of the connecting fitting is inserted, and the through hole is perpendicular to the axis and whose inner edge intersects with the mounting hole, and at the end of the arm,
A retaining groove is provided that is perpendicular to the axis and corresponds to the through hole, and an engaging piece is inserted through the through hole and the engaging groove to prevent the arm from moving back and forth and rotating with respect to the connecting fitting. The apparatus according to claim 11, characterized in that: (3) A notch is provided on the inner edge of the retaining piece that can match the edge of the mounting hole, and by moving the retaining piece laterally and aligning this notch with the mounting hole, the arm can be attached and removed from the connecting fitting. Claim No. 1 is characterized in that the arm is made to hang and a part of the notch faces into the mounting hole, thereby preventing the arm from moving back and forth and rotating.
) or (2). (4) When the engaging piece is moved laterally and its notch is aligned with the mounting hole, and when a part of the notch is exposed into the mounting hole, the hole is drilled in the engaging hole. 3. The device according to claim 3, wherein the connecting fitting is provided with a fixing screw that can be locked into the engagement hole.