JPH047051Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a box for storing various workpieces such as bolts, nuts, and punched parts that are processed and discharged by processing equipment such as bolt formers, nut formers, or presses. This relates to an automatic box feeding device that sequentially transports boxes to the discharge port of processing equipment.
More specifically, the present invention relates to an improvement in an automatic box feeding device that stores boxes by stacking them vertically.

(Prior technology) When the automatic box feeding device is combined with processing equipment such as bolt formers, nut formers, or presses, the processing equipment can operate continuously for long periods of time.
In particular, an automatic box feeding device that stores the boxes to be fed by stacking them vertically and transports the boxes one after another to the workpiece discharge port of the automatic processing device has the advantage of requiring less installation space. Therefore, it is widely used in screw manufacturing factories, press factories, etc.

This type of automatic box feeding device generally has a frame main body that has a flange around the opening and an entrance through which the boxes are brought in, on the top surface, and an exit through which the boxes are taken out, on the front surface. , a storage section provided on the upper surface of the underframe body for stacking and storing boxes carried into the main body; and a flange of the lowest box among the boxes stacked in the storage section, which can be freely engaged and detached. drop prevention means that releasably prevents the boxes from falling to the bottom of the underframe main body by engaging with the underframe main body; box unloading means for lowering the lowest of the boxes in the frame body to the bottom of the frame body; and a box unloading means that reciprocates between a workpiece discharge position located outside the frame body and the inside of the frame body by horizontal movement. and transport means for transporting the boxes and the like that have been lowered onto the bottom of the frame main body to a work discharge position and further pushing the boxes that are at the work discharge position further forward.

According to the automatic box supply device configured as described above, when the boxes installed at the workpiece discharge position are filled with the workpieces discharged from the processing device, the fall prevention by the fall prevention means is released, and the boxes stacked in the storage section are released. The lowest boxes are lowered to the bottom of the frame body by the box unloading means, and then the empty boxes are transported from the bottom to the workpiece discharge position by the transport means, and the boxes full of workpieces are transported from the bottom to the workpiece discharge position. etc. are pushed out from the workpiece ejection position.

(Problem that the invention aims to solve) By the way, when boxes to be supplied are stacked vertically and stored, cutting oil used in processing equipment may be attached to the boxes, or the material of the boxes may be contaminated. Because certain synthetic resins soften with heat, adjacent boxes often adhere to each other. In particular, the lower the boxes, the more the total weight of the upper boxes is added, making it easier to bond.

In the automatic box feeding device described above, if the boxes at the bottom of the storage section are glued to the boxes stacked above, even if the fall prevention means is released, the boxes at the bottom will still be stuck. Since the box does not fall to the box unloading means, it cannot be lowered to the bottom of the frame main body by the box unloading means.

In view of this problem, the present invention provides an automatic box feeding device that can reliably unload boxes one by one to the bottom of the frame body, even if the boxes stacked and stored in the storage section are glued to each other. The purpose is to

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention has been developed in the above-mentioned type of automatic box feeding device, which has a claw member that can be raised up and down and that is elastically biased in the upright direction. is integrally provided in the box unloading means, and when the means rises, the claw member contacts the flange of the lowermost box, falls down and passes through the flange, and the box unloading means It is characterized in that when descending, it engages with the upper surface of the flange.

(Operations and effects of the invention) According to the above configuration, when the box unloading means ascends to receive the box at the bottom of the storage section, the claw member contacts the flange of the box at the bottom and falls down. It passes through the flange, and when it passes through the flange and reaches the upper part, it stands up again.

On the other hand, when the box unloading means descends, the raised claw member engages with the upper surface of the flange of the lowest box. Therefore, even if the boxes at the bottom are glued to the boxes stacked above, they are forcibly separated by the claw members when the box unloading means descends, so that each box is reliably delivered to the bottom of the frame body. It can be taken down.

(Example) An example of the present invention will be described in detail below with reference to the drawings.

Fig. 1 is an overall perspective view of an automatic box feeding device according to an embodiment of the present invention, Fig. 2 is a partially cutaway front view showing the main parts, and Fig. 3 is a partially cutaway side view. be.

In FIGS. 1 to 3, the automatic box feeding device 1 includes an underframe main body 2, a storage section 4, a fall prevention means 6,
It is equipped with a conveying means 7 and a box unloading means 9.

As shown in FIG. 4, the upper surface of the underframe main body 2 is formed with an entrance 3 through which a box 10 having a flange 12 formed at the periphery of an opening 11 is carried in from the bottom surface.
An exit 3a (see FIG. 3) is formed in the front surface of the box 10, through which the boxes 10 are carried out from the front surface. Also,
Openings 5 are formed on the left and right sides, and an opening 3b is formed on the back.

The storage section 4 includes a frame 41 erected along the periphery of the entrance 3 and a hinge 44 with respect to the frame 41.
A reinforcing frame 43 fixed to the inside of the upper part of the frame 42 and the frame 41, which can be opened and closed through the frame 42.
By opening the frame 42, a large number of boxes 10 can be stacked and stored in the frame 41.

The fall prevention means 6 includes a pair of support shafts 61 rotatably attached to the left and right side surfaces of the underframe main body 2, two arms 62 protruding from each support shaft 61, and two arms 62 fixed to one end of each support shaft 61. a lever 64 that rotates together with the support shaft 61;
An air cylinder 63 and both levers 64 in which a piston rod 63a is connected to one of the levers 64 and the bottom of a cylinder tube is connected to the other lever 64.
The arm 62 is provided with a compression spring 65 mounted between the arm 62 and
As shown in FIG. 2, a bent portion 66 is formed at the tip of the underframe body 2, which is bent toward the inside of the frame body 2.

The drop prevention means has the above-mentioned structure, and when the air cylinder 63 is not in operation, the piston rod 63a retreats due to the compression force of the compression spring 65, and both levers 64 rotate inward. Therefore arm 62
As shown in FIG. 2, the bent portion 66 of the box projects into the underframe main body 2 through the opening 5 and engages with the flange 11 of the lowest box 10 stacked in the storage section 4. To prevent boxes 10 from falling to the bottom of an underframe body 2.

On the other hand, when the piston rod 63a is advanced against the compression spring 65, both arms 64 rotate outward, so that the bent portion 66 is retracted from the inside of the underframe main body 2. Therefore, the bent portion 66 no longer engages with the flange 11 of the boxes 10.
The fall prevention is lifted.

Incidentally, when the main switch of the device 1 is off and compressed air is not being supplied to the air cylinder 63, the bending portion 66 is always maintained in a state protruding into the interior of the frame body 2 by the action of the compression spring 65. Therefore, the boxes stacked in the storage section 4 will not fall even if the main switch of the device 1 is turned off.

The box unloading means 9 includes an air cylinder 92 erected on a frame 91 fixed to the back side of the underframe main body 2;
A pair of rods 93 penetrating the upper frame 96 of the underframe main body 2 so as to be movable up and down, and a connecting plate 95 connecting both rods 93 and the piston rod 94 of the air cylinder 92. It is bent at right angles to form an arm portion 97 (see FIG. 3). A plate 98 having a substantially L-shaped cross section is integrally provided at the tip of the arm portion 97 .

As shown in FIG. 5, a claw member 100 is attached to the inside of the upper end of the plate 98. This claw member 100 is a protruding piece 101a that is protruded from the plate 98.
It is rotatably assembled to a pin 101 fixed to the tip of the plate 98 and stands up against the plate 98 by a spring 99 stretched between a pin 102 implanted in the claw member 100 and a pin 103 implanted in the plate 98. direction (in the direction of the arrow shown in FIG. 5).

The box unloading means 9 has the above-mentioned structure, and when the air cylinder 92 and piston rod 94 are advanced, the rod 93 is raised, and accordingly, the arm portion 9 is moved forward.
7 rises from the bottom of the frame body 2 until it abuts the bottom of the lowest box among the boxes 10 stored in the storage section 4. The claw member 100 is a rod 93
When the plate 98 rises together with the arm part 9
7 is arranged so as to abut against the flange 12 of the lowest box 10 before abutting against the bottom of the box 10. Therefore, when the rod 93 is slightly removed, the flange 12
However, at this time, the spring 99 collapses against the elastic force, so the claw member 100 passes through the flange 12 without being caught.

On the other hand, when the piston rod 94 is moved backward, the rod 93 is lowered and the arm portion 97 is lowered to the bottom of the frame body 2. At this time, if the boxes at the bottom are glued to the boxes stacked above, the boxes 10 will not be placed on the arm section 97 when the fall prevention means 6 releases the fall prevention, but the arm section While the box 97 is descending to the bottom, the claw member 100 raised by the spring 99 engages with the upper surface of the flange 12 of the box 10 and forcibly pushes the box 10 down. At this time, since the second boxes 10 from the bottom are prevented from falling by the fall prevention means 6, the bottom boxes 10 and the boxes 10 stacked above are forcibly separated.

Next, the conveying means 7 consists of an air cylinder 72 attached to a frame 71 fixed to the lower back of the frame body 2 and extending rearward, a plate 74 having a substantially L-shaped cross section connected to a piston rod 73 of the air cylinder 72, and a base. A guide frame 70 is installed from the bottom of the frame body 2 to a workpiece discharge port of an automatic processing device (not shown).

A piston rod 73 of the air cylinder 72 is fixed to a bent portion 77 formed by vertically bending the rear end of the plate 74, and an extrusion plate 79 having a substantially L-shaped cross section is attached to the front end via a support shaft 78 in the vertical direction. It is assembled so that it can rotate. Further, a roller 80 is attached to the lower surface of the front end of the plate 74. Furthermore, a pair of left and right rollers 81 are attached to the middle part of the bent part formed by vertically bending the front end of the extrusion plate 79.

The rollers 80 are placed in guide grooves 82 provided on the bottom surfaces of both guide frames 70 and roll thereon. Further, the roller 81 is placed on two guide rails 83 formed at the bent portions at both ends of the guide frame 70, and rolls thereon.

As shown in FIG. 3, this guide rail 83 has a notch 88 at a portion close to the outlet 3a of the underframe body 2, and a notch 85 at a certain distance in front of this notch 88. The notch 88 is provided with a rising guide portion 84 that is inclined downwardly of the following guide rail 83 . Also,
A cover plate 87 is attached to one end of the notch 88 so as to be rotatable in the vertical direction via a support shaft 86.
The plate 87 rotates downward due to its own weight and closes the notch 88. On the other hand, a descending guide portion 85a is formed in the cutout portion 85 and is inclined downward from the preceding guide rail 83. The area surrounded by both of these notches 88 and 85 becomes a workpiece discharge position 89 that receives a workpiece discharged from the automatic processing device into a box. Further, the width of the two guide rails 83 is set such that the boxes 10 that have been lowered from the storage section 4 to the bottom of the frame body 2 by the box unloading means 9 described above can be placed thereon.

The conveying means 7 has the above-mentioned configuration, and when the piston rod 73 of the air cylinder 72 moves forward, the roller 80 rolls along the guide groove 82 and the plate 74 moves forward, so that it is placed on the guide rail 83. The boxes 10 are sent out by the bending part 77 and carried out from the exit 3a to the workpiece discharge position 89.
Move up to. When the plate 74 moves forward, the cover plate 87 closes the notch 88, so the roller 81 moves the cover plate 87
It passes above and reaches the following guide rail 83. Therefore, as shown in FIG. 1, the bent portion of the push-out plate 79 moves forward along the guide rail 83 while protruding above the guide rail 83, and is transported to the workpiece discharge position 89 in the previous cycle. When the boxes 10 are at the work discharge position 89, the boxes 10 are further pushed forward. When the piston rod 73 reaches the forward stroke end, the roller 81 reaches the notch 85 and is guided by the descending guide section 85a to descend to the bottom surface of the guide frame 70, so that the push-out plate 79 rotates about the support shaft 78. Guide rail 8
Climb below 3. Therefore, piston rod 7
3 retreats, even if a box or the like is placed at the work discharge position 89, the push-out plate 79 passes under the guide rail 83, so it retreats without any problem. After passing the workpiece discharge position 89, the roller 8
1 rises along the rising guide portion 84, and the bent portion of the push-out plate 79 projects from above the guide rail 83 again.

The automatic box feeding device 1 has the above-mentioned configuration, and its overall operation will be explained next.

Figures 6a to 6f are operation explanatory diagrams schematically showing the main parts of the conveyance means 7, and Figures 7a to 7g schematically show the main parts of the drop prevention means 6 and the box unloading means 9. It is an operation explanatory diagram.

FIG. 6a shows empty boxes 10 stacked in the storage section 4 in advance and guide rails 8 inside the frame main body 2.
3 shows an initial state in which an empty box 10a is placed on top of the box 10a. When a start signal is given to the box automatic feeding device 1 in this state, the plate 74 is advanced by the air cylinder 72 as shown in FIG. 6b, and the boxes 10 are moved forward.
a is sent out at the bending part 77 and reaches the workpiece discharge position 8
Sent up to 9. And air cylinder 7
When the second piston rod 73 reaches the forward stroke end, the roller 81 reaches the notch 85, and the roller 81 descends along the lowering guide portion 85a, so that the push-out plate 79 slips under the guide rail 83. At this time, the limit switch 23 attached to the air cylinder 72 is activated to change the operating direction of the air cylinder 72, so that the piston rod 73 is moved back as shown in FIG. 3c. As a result, the push-out plate 79 passes under the guide rail 83 and retreats, so the boxes 10a
is left behind at the workpiece discharge position. When the roller 81 reaches the ascending guide section 84, it is guided by the guide section 84 and ascends. At this time, the finishing plate 79 ascends while pushing up the cover plate 87, and the bent section protrudes above the guide rail 83. . On the other hand, processing equipment (not shown) is provided in the boxes 10a.
Workpieces 13 coming out of the container are filled one after another.

When the filling of the workpieces 13 is completed, a signal is output from the processing device to the automatic box supply device 1, and the arm portion 97 starts to rise. At this time, as shown in FIG. 7a, the arm 62 of the fall preventing means 6 engages with the flange 12 of the lowermost boxes 10b to prevent the boxes 10b from falling. As the arm part 97 rises, the claw member 100 comes into contact with the flange part 12 of the box 10b on the way, as shown in FIG.
00 passes through the flange 12, and the arm 97 passes through the 7th c
As shown in the figure, it further rises until it comes into contact with the bottom surface of the box 10b. When the arm portion 97 comes into contact with the bottom surface of the box 10b, the arm 62 rotates outward as shown in FIG.
0b's fall prevention is released. At the same time, the air cylinder 92 is activated by the output signal of the limit switch 20.
The operating direction of the arm 97 is switched, and the arm portion 97 starts to descend as shown in FIG. 7e, and the stacked boxes 10b are
-10e as a whole descends together with the arm portion 97.
When the arm 97 is lowered by the height of the box 10, as shown in FIG. 7F, the air cylinder 63 is deactivated by the output signal of the limit switch 21, and the arm 62 reaches a position where it engages with the collar 12 by the spring 65. Rotate until. As shown in FIG. 7g, when the arm portion 97 is further lowered, the box 10c is stopped by the arm 62 at its flange and prevented from falling. At this time, if the boxes 10b are adhered to the boxes 10c, the claw member 100 standing up on the flange of the boxes 10b will be caught as the arm portion 97 descends, and the boxes will be forcibly separated from the boxes 10c. The class 10b falls from above the arm portion 97.

Next, when the arm portion 97 is lowered to the bottom of the frame body 2 and the boxes 10b are lowered to the guide rail 83, the piston rod 73 of the air cylinder 72 is moved by the output signal of the limit switch 22 as shown in FIG. 6d. Moving forward, the boxes 10b are sent to the work discharge position 89, and the boxes 10a filled with the works 13 are further pushed forward by the pushing plate 79, as shown in FIG. 6e.
Then, when the box 10a is pushed out from the work discharge position 89 as shown in Fig. 6f, the push-out plate 79 passes under the guide rail 83 again and enters the underframe main body 2 as shown in Fig. 6c. fall back.

According to this embodiment, since the claw member 100 is integrally provided on the arm portion 97 of the box unloading means 9, the boxes 10a to 10e stacked in the storage section 4 can be
Even if they are adhered to each other due to adhesion of cutting oil or the like, they are forcibly separated and placed on the arm portion 97. Therefore, the boxes 10a to 10e can be reliably transported one by one to the work discharge position 89.

[Brief explanation of drawings]

Fig. 1 is an overall perspective view of an automatic box feeding device according to an embodiment of the present invention, Fig. 2 is a partially cutaway front view showing the main parts thereof, and Fig. 3 is a partially cutaway side view, Fig. 4 is a perspective view of boxes used in the automatic box feeding device of the present invention, Fig. 5 is an enlarged view of the claw member, Fig. 6 is an operational explanatory diagram schematically showing the conveying means, and Fig. 7 is It is an operation explanatory diagram showing a box unloading means typically. Explanation of symbols, 1... Box automatic feeding device, 2...
Underframe body, 3... Entrance, 3b... Exit, 4...
Storage section, 6... fall prevention means, 7... conveyance means,
9... Box unloading means, 10, 10a to 10e...
Boxes, 12... Flange, 89... Work discharge position,
100...Claw member.

Claims (1)

[Scope of utility model registration request] An underframe main body with a flange around the opening and an entrance through which boxes are carried in is formed on the top surface, and an exit through which the boxes are taken out is formed on the front surface, and an underframe main body which is provided on the top surface of this underframe body and has the same A storage section for stacking and storing boxes carried into the main body; and a storage section for storing boxes stacked in the storage section; Fall prevention means for releasably preventing falling to the bottom of the frame body;
box unloading means that reciprocates within the underframe main body by vertical movement and lowers the lowest boxes among the boxes stored in the storage section to the bottom of the underframe main body; and the underframe by horizontal movement. It moves back and forth between a workpiece ejection position located outside the main body and the inside of the main body, and transports the boxes and the like that have been lowered to the bottom of the underframe main body to the workpiece ejection position, and also transports the boxes and the like that are at the same ejection position. Further, in an automatic box feeding device equipped with a transport means for pushing forward, a claw member that can be raised and lowered and elastically biased in the upright direction is integrally provided with the box unloading means, and the means is raised. When the box unloading means lowers, the claw member contacts the flange of the lowermost box, falls down, and passes through the flange, and when the box unloading means descends, it engages with the upper surface of the flange. An automatic box feeding device characterized by: