JPH0741703Y2 - Goods transfer device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Use The present invention relates to an article transfer device used in a production line.

(B) Conventional technology Supplies articles to a conveyor line, assembling equipment and processing equipment,
There are various types of article transfer devices used for ejecting the articles.

In the device described in Japanese Utility Model Laid-Open No. 61-17800, a continuous body of lead frames is conveyed, the lead frames are stopped by a stopper and cut with a cutter, and then the lead frames are held and sequentially placed in a magazine located below the lead frames. Accommodate.

(C) Problems to be Solved by the Invention In the above device, since the actuator for holding the lead frame and the actuator for vertically driving the held lead frame downward are separately provided, the device cost is reduced. Is high. The present invention has been made in view of the above points, and it is an object of the present invention to provide at low cost a device capable of reliably transferring an article.

(D) Means for Solving the Problems In the present invention, a bearing plate that reciprocates with a constant stroke by an actuator, a rotary shaft that is axially supported by the bearing plate, and that supports a chuck that holds an article, A first lever fixed to the rotating shaft, a first spring provided between the first lever and a bearing plate, and always supporting the chuck in a specific direction, and supported by the first lever. The chuck opening / closing operation cam shaft, the second lever fixed to the cam shaft, and the first stroke end of the bearing plate are provided at the first stroke end so as to change the direction of the chuck against the first spring. A fixed cam that rotates the lever, an operating body that is provided at both stroke ends of the bearing plate and that rotates the cam shaft by engaging with the second lever, and between the first lever and the second lever. Is provided in the operation body Therefore, a second spring that maintains the rotated cam shaft at that angle is provided.

(E) Action In the above device, when the bearing plate is located at one stroke end, the cam shaft is rotated by the operating body via the second lever, and the chuck is closed to sandwich the article. Second
The cam shaft maintains the angle by the spring of the above, and the bearing plate is moved to the other stroke end by the actuator while the chuck holds the article. When the bearing plate reaches the other stroke end, the first lever hits the fixed cam and the first lever rotates against the biasing force of the first spring,
The rotation axis also rotates and the orientation of the chuck changes. After that, the second lever engages with the operation body and rotates, and the cam shaft opens the chuck to release the article. The second spring keeps the cam shaft at that angle, and the actuator moves the bearing plate to the original stroke end with the chuck open.

(F) Example FIG. 1 and FIG. 2 show the structure of the article transfer device 1. Reference numeral 2 is a main base, and a mounting plate 5 is supported on the main base 2 via support plates 3 and 4. Reference numeral 6 is a rail fixed to the vertical surface of the mounting plate 5. Reference numeral 7 denotes a bearing plate which extends horizontally in parallel with the rail 6, and when the slider 8 fixed to the side surface slides on the rail 6, the bearing plate 7 itself also slides horizontally. Reference numeral 10 denotes an air cylinder fixed to the main base 2 via a mounting angle 9. The air cylinder 10 serves as an actuator that reciprocates the bearing plate 7 by a constant stroke. Air cylinder 10 rod 11
Is connected via a joint 12 to a connecting plate 13 fixed to one end of the vertical surface of the bearing plate 7. Reference numerals 15 and 16 denote a rotating shaft and a cam shaft which are rotatably supported by the bearing plate 7 so as to intersect with the bearing plate 7. Reference numeral 17 is a chuck composed of a pair of upper and lower elastic plates 18, and one end of the elastic plate 18 in the depth direction is fixed to one end of the rotary shaft 15 by a bolt 19 so as to sandwich the same. The free ends of the elastic plate 18 are bent toward each other,
The tip ends thereof are bent so as to be parallel to each other to form an article holding section 20 that closely fits. In addition, a slit 21 is formed in the depth direction of the elastic plate 18 from the edge of the article holding section 20.
Are formed. There are five slits 21, which are arranged in parallel in the width direction of the article holding section 20 at a predetermined interval, and divide the article holding section 20 into six holding pieces 22. A plurality of holes 23 are formed in the elastic plate 18 to adjust the elasticity. The article 25 here is an IC lead frame, which is obtained by punching a copper plate into a predetermined shape and plating the surface with solder. Goods
25 is cut to a predetermined size by an upstream process (not shown) and then conveyed. The cam shaft 16 extends in parallel with the rotary shaft 15 and enters between the elastic plates 18. The cam shaft 16 is formed by forming flat surfaces 26 parallel to each other on both side surfaces of a round bar material. Camshaft 16
When the flat surface 26 faces the elastic plate 18,
Are close to each other and the chuck 17 is closed so that the article 25 can be pinched. On the other hand, the camshaft 16 has the elastic plate
When directed toward 18, the elastic plates 18 are separated from each other and the chuck 17 is opened, separating the articles 25. At the other end of the rotary shaft 15, the first lever 30
Is stuck. A roller 31 is attached to the tip of the first lever 30.
Is installed. 32 is a block fixed to the other end of the bearing plate 7. Bolts 33 and 34 are screwed into the block 32 and the first lever 30, respectively, and a first spring 35 is stretched over the bolts 33 and 34. The first spring 35 biases the first lever 30 counterclockwise in FIG. Reference numeral 36 denotes a first stopper bolt screwed to the side surface of the block 32, and the first lever 30 abuts on this stopper bolt and stops at a constant angle. In this state, the chuck 17 faces sideways. Reference numeral 37 denotes a second stopper bolt which is screwed onto the slope of the block 32 so as to form a predetermined angle with the first stopper bolt 36.
The second stopper bolt 37 is provided for the first lever 30 when the first lever 30 is rotated by a predetermined angle by a fixed cam described later.
Is to stop. The cam shaft 16 is not directly supported by the bearing plate 7, but is rotatably supported by the first lever 30. A second lever 40 is fixed to the other end of the cam shaft 16. A roller 41 is attached to the tip of the second lever 40. 42 and 43 are the first lever 30 and the second lever
A bolt that is screwed to 40, and a second spring for bolts 42 and 43.
Forty-four have been passed. The second spring 44 functions as a so-called toggle spring that maintains the angle of the cam shaft 16 so that the chuck 17 keeps the opened state or the closed state. 45, 46
Are third and fourth stopper bolts that are screwed into the first lever 30 and restrict the rotation range of the second lever 40. 47
Is an air cylinder located at one stroke end of the bearing plate 7, which serves as an operating body for the second lever 40, and is fixed to the main base 2 by a mounting angle 48. A pusher block 50 is fixed to the tip of the rod 49 of the air cylinder 47, and the pusher block 50 pushes the roller 41 of the second lever 40 to rotate the cam shaft 16 and close the chuck 17 to sandwich the article 25. Mu. Reference numeral 51 is a fixed cam provided at the other stroke end of the bearing plate 7, and when the air cylinder 10 extends the rod 11, the first lever 30
Is to rotate. Reference numeral 52 denotes a fixed cam arranged side by side with the fixed cam 51, which serves as another operating body for the second lever 40. Reference numeral 53 is a mounting angle fixed to the main base 2, and the fixed cam 5 is connected via the connecting rods 54 and 55.
1 and 52 are fixed. Reference numeral 60 denotes an article alignment unit that receives the articles 25 from the chuck 17. The article alignment unit 60 includes a support plate 62 having an inverted T-shaped cross section and blocks 63 provided on both sides thereof.
It is composed of The block 63 is fixed to the base 61, but the support plate 62 is removable. The alignment of the articles 25 is
This is performed in such a manner that the article 25 is straddled by the support plate 62. Article alignment section
Two 60s are provided on the base 61. Each article arranging section 60 includes a vibrator (not shown), and gives vibration to the support plate 62. Due to this vibration, the articles 25 are moved to the left in the figure and are aligned in order from the beginning. At the left end of the support plate 62, a stopper (not shown) for stopping the movement of the article 25 is provided.
Reference numeral 64 is an air cylinder that slides the base 61, and plays a role of switching the full article alignment section 60 to the other. The full support plate 62 is removed from the base 61 and carried to the next step.

Next, the operation will be described with reference to FIGS.
Initially, the air cylinder 10 retracts the rod 11, the bearing plate 7 is located at the stroke end on the article receiving side,
The chuck 17 is oriented in the horizontal direction, and the cam shaft 16 keeps the chuck 17 open by the second spring 44 to wait for the article 25 to be conveyed. Exactly the state of FIGS. 3 and 8. When the article 25 is conveyed between the elastic plates 18 in this state, the air cylinder 47 extends the rod 49, the pusher block 50 presses the roller 41, and the second lever 40 moves to the third stopper bolt. Rotate in the direction of 45. The second lever 40 thereby goes beyond the idea of a toggle spring, causing the camshaft 16 to rotate in the same direction. The chuck 17 is closed here to pinch the article 25 (Fig. 4, Fig. 9).
Figure). Next, when the air cylinder 10 extends the rod 11, the bearing plate 7 slides. The roller 31 contacts the inclined surface of the fixed cam 51 in the process of sliding, and the first lever 30 rotates against the biasing force of the first spring 35. Along with this, the rotating shaft 15
Also rotates clockwise, and the chuck 17 turns downward (Fig. 5, Fig. 10). When the rod 11 is further extended, the roller 31 comes into contact with the horizontal surface of the fixed cam 51, and the first lever 30 rotates to the position where it is stopped by the second stopper bolt 37. The chuck 17 further descends to the right and causes the article 25 to straddle the article alignment section 60 (FIG. 6, FIG. 11). When the rod 11 is further extended and the bearing plate 7 moves toward the stroke end on the article delivery side, the roller 41 contacts the plate cam 52 and the second lever 40 starts rotating. When the rotation advances and exceeds the imaginary point, the second lever 40 advances at a stroke toward the fourth stopper bolt 46 by the second spring 44, and the rotation of the cam shaft 16 causes the chuck 17 to open and the article 25 to be moved. It is released and handed over to the support plate 62 (Fig. 12, Fig. 12). Next, when the air cylinder 10 retracts the rod 11, the article transfer device 1 moves to the third position.
After returning to the state shown in the figure, the operations of FIGS. 4 to 7 are repeated in the same manner.

(A) Effect of the Invention In the present invention, the chuck is closed by the operating body provided at one stroke end of the actuator to sandwich the article, the article is moved by the actuator, and the operating body provided at the other stroke end is used. The chuck is open and the items are separated. During the stroke of the actuator, the open or closed state of the chuck is maintained only by the second spring. Therefore, an actuator for maintaining the closed or open state of the chuck is not required during the transportation of the article or during the return to the article receiving position after the transportation, the configuration is simplified, and the apparatus cost can be reduced. .

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a perspective view of an article transfer device, FIG. 2 is a plan view of the article transfer device, and FIGS. 3 to 7 are partial sectional views of the article transfer device. FIG. 8 to FIG. 12 are sectional views of the chuck showing a series of operations in a side view, and showing a series of operations in association with FIG. 3 to FIG. 1 ... Article transfer device, 10 ... Air cylinder (actuator), 7 ... Bearing plate, 17 ... Chuck, 15 ... Rotating shaft, 30 ... First lever, 35 ... First spring, 16 …… Cam shaft, 40 …… Second lever, 51 …… Fixed cam, 47 …… Air cylinder (operating body), 52 …… Fixed cam (operating body), 44
...... Second spring.

Claims (1)

[Scope of utility model registration request] 1. A bearing plate which reciprocates with a constant stroke by an actuator, a rotary shaft which is axially supported by the bearing plate and which supports a chuck for holding an article, and a first shaft fixed to the rotary shaft. A lever, a first spring that is provided between the first lever and the bearing plate, and that always directs the chuck in a specific direction; a chuck opening / closing operation camshaft supported by the first lever; A second lever fixed to the cam shaft; a fixed cam provided at one stroke end of the bearing plate for rotating the first lever against the first spring so that the orientation of the chuck changes. An operating body that is provided at both stroke ends of the bearing plate and that engages with the second lever to rotate the cam shaft, and is provided between the first lever and the second lever, and is rotated by the operating body. The angle of the moved camshaft Article transfer device having a second spring to maintain.