JPH03211115A - Automatic work feeding device - Google Patents

Abstract

PURPOSE:To deliver works intermittently by the fixed number by providing the fixed number of rails between a pallet conveyor and an elevator, and disposing a work feeding device at the first half part of the rail and a delivering push-in device at the latter half of the rail. CONSTITUTION:A work W held pendantly at a pallet 20 on a conveyor 1 is delivered onto a rail 35 from the pallet 20 by pushing the bar 38 of a pusher 37 in the direction of an arrow mark. Upon reaching P2, the work W is sent to P3 by a long-sized bar 52 moved by an endless chain 51. With the L-shaped claws 59a-61b of push-in mechanism 55 set in the broken line position, the work W is moved to P4 by a feed bar device 50. Then, with the L-shaped claws 59a-61b set in the continuous line position, the work W is held between the claws 59a-61b. A frame 56 is moved to the left to feed the work W to P5 and returned to the original position after the release of the claws 59a-61b. The work W is then delivered to an elevator 65. Intermittent feeding can be thus performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic workpiece feeding device. More specifically, the present invention relates to an automatic workpiece feeder that intermittently dispenses a fixed number of continuously transported workpieces.

[Conventional technology]

In general, various shapes have been proposed and used as containers used for liquid transportation, etc., but one of them is a bag made of a flexible membrane such as a synthetic resin, and this bag is used as a container. There is something (hereinafter, this container will be referred to as the work)
.

This workpiece needs to be transported in a continuous and stable state from the time it is molded in a molding machine until it is taken out as a product, but generally this type of workpiece is formed into a flat shape, and It is very difficult to handle due to its light weight.

By the way, when attempting to mass-produce this workpiece, it is conceivable to manufacture it by assembly line operation using an automated line. In this automated line, the workpieces are transported using a transport pallet.

[Problem to be solved by the invention]

The present invention has been made in view of such conventional problems, and its purpose is to intermittently and reliably send a fixed number of continuously transported workpieces to the next process. Our goal is to provide an automatic feeding device.

[Means to solve the problem]

That is, in the automatic workpiece feeder of the present invention, a certain number of rails are arranged in parallel between a conveyor that conveys a workpiece conveyor pallet and an elevator that conveys the workpieces in the vertical direction, and the front half of the rail is provided with the above-mentioned rails. A feed bar device is provided to move the workpieces delivered from the workpiece conveyance pallet onto the rail to the area of the pusher, and a fixed number of workpieces supported by the rail are transferred to the lifting elevator at a rear portion of the rail. It is characterized by the installation of a pusher that simultaneously dispenses.

〔Example] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of an automatic workpiece feeder according to the present invention, in which a flat and non-self-supporting workpiece W is transferred from a workpiece transfer pallet 20 on a conveyor conveyor (hereinafter referred to as a free flow conveyor) 1 to an elevator 65. It is designed to be dispensed intermittently in fixed quantities. Work W is the 6th
As shown in the figure, it consists of a neck part 8 having a flange 7 and a flat bag body 9, and is integrally formed of synthetic resin such as polyethylene.

71J--The flow conveyor 1 has a large number of rotating shafts 2 rotatably attached to a frame 3.4, as shown in FIGS. 4 and 5. When the free roller 5 is pressed against the rotating shaft 2, it rotates together with the rotating shaft 2. frame 3
A guide 6 is attached to prevent the workpiece transport pallet 20 from falling off.

71J--The workpiece conveyance pallet 20 is continuously conveyed in the direction of arrow F by the flow conveyor 1, and as shown in FIGS. is attached to. This bracket 23 protrudes in the lateral direction of the pallet 22, and two claws 24 and 25 are attached to the tip of the bracket by a pin 26 so as to be openable and closable. Furthermore, bracket 2
A stopper 27 and a pawl opening stopper 28 are attached to the tip of the pawl 3 to regulate the degree of opening and closing of the pawls 24 and 25 of the two pieces. Also, a spring 29 is inserted between the two claws 24 and 25.
is crosslinked. Furthermore, on the side of the pallet 22,
Notch 30 for fixing pallet 22 in a predetermined location
is provided. The pallet 22 also has a first hole 33 for positioning the pallet 22 at a predetermined location, and second positioning holes 31 provided before and after this hole 33.
．． 31 are provided. Furthermore, cushioning materials 32 are attached to the front and rear of the pallet 22.

As shown in FIG. 2, a fixed number (four sets in this embodiment) of rails 35 are arranged in parallel between the free flow conveyor 1 and the lifting elevator 65. rail 35
are a pair of elongated members 3 that support the flange 7 of the workpiece W.
It is formed by 6. A pusher 37 is disposed in a workpiece discharging section A for discharging works W from the four workpiece conveyance pallets 20 on the free flow conveyor 1 to each rail 35, respectively.

This pusher 37 has a bar 38 wider than the entire width of the four sets of rails, and the bar 38 allows the workpieces W to be simultaneously delivered from the four workpiece transport pallets 20 to each rail 35. . This bar 38
As shown in the figure, it is located near the neck 8 of the workpiece W and is attached to the rod 41 of the fluid cylinder 40 via an arm 39.

Further, in the workpiece unloading section A, a pallet feeding device 42 is provided.
is installed. As shown in FIG. 3, a plurality of fluid cylinders 45 are installed on the slider 44 of the pallet feeding device 42 at the same intervals as the rails 35. This slider 44 is moved freely by a fluid cylinder (not shown).
It is adapted to be reciprocated along a guide member 43 arranged in parallel with the flow conveyor 1. Then, when the rod 46 of the cylinder 45 separates from the workpiece conveyance pallet 20 while the workpiece conveyance pallet 20 is firmly held by the positioning pin 47, the slider 44 is returned in the direction of arrow C. When the slider 44 returns to the predetermined position, the rod 46 of the fluid cylinder 45 is inserted into the hole 33 of the workpiece conveyance pallet 20, and the four workpiece conveyance pallets 20
is held by the slider 44. When the workpiece conveyance pallet 20 in the workpiece discharging section A is transferred in the direction of arrow F, the slider 44 is moved to the workpiece discharging section A.

Furthermore, as shown in FIG. 1, the workpiece dispensing section A includes
Four sets of positioning pins 47 are installed facing the rail 35. This positioning pin 47 moves in and out of the rail 35 by a fluid cylinder (not shown). Also,
A stopper 48 for stopping the workpiece conveyance pallet 20 is incorporated in the workpiece unloading section A.
It is raised and lowered by a fluid cylinder (not shown).

Further, as shown in FIG. 2, in front of the rail 35 mentioned above, there is a guide bar 11.
2 are installed in parallel on the free flow conveyor l.

As shown in FIGS. 1 and 2, the front half 3 of the rail 35
A feed bar device 50 is arranged at 5a. Long bars 52 are attached at regular intervals around a pair of endless chains 51 of this device. Each endless chain 51 is supported at its upper side by four chain wheels 53 in parallel with the rail 35. Also, rail 3
Two anti-rotation bars 13 and 14 are disposed near the front end 35a of 5 to prevent rotation of the work while maintaining a predetermined interval.

Further, as shown in FIGS. 1 and 2, a pusher 55 is installed in the rear half 35b of the rail 35. A frame 56 of this pushing machine 55 is adapted to move along a pair of guide rails 57 arranged in parallel with the rail 35. This frame 56 also has two arms 5.
8a and 58b are rotatably attached.

Four sets of three L-shaped claws 59a, 60a, and 61a are attached to the first arm 58a to move the workpiece W in the area E of the pusher 55 toward the lifting elevator 65, and the second arm 58b , four sets of three L-shaped claws 59b, 60b, and 61b for discharging the workpiece W to the lifting elevator 65 are attached. The middle L-shaped claws 60a and 60b hold down the flange 7 of the workpiece W, and the two left and right claws 59a and 61
a, 59b, and 61b are adapted to press the bag body 9. A rack 62 is fixed to each end of the frame 56, and is moved in the longitudinal direction of the rail 35 by a pinion 63 that engages with the rack 62. Further, at the front end of the region E of the pusher 55, a rotation prevention bar 15 for preventing the workpiece W from rotating is provided.

On the other hand, as shown in FIG.
It has four sets of work gripping tools 66 facing the sets of rails 35. As shown in FIG. 1, a long bracket 67 having four sets of work-forming holders 66 is attached at regular intervals between a pair of chains 70 attached to two upper and lower chain wheels 68 and 69. . The work gripping tool 66 has two claws 71 and 72 and a spring 73 bridged between them. Further, a workpiece rotation prevention member 74 is provided below the two claws 71 and 72.

Next, the operation of the automatic work feed device described above will be explained.

(a) FIG. 2 shows a state in which four workpiece transport pallets 20 moved by the pallet feeder 42 are held firmly by four positioning pins 47, and these positioning pins 47 are connected to the notches of the pallets 22. 30, each workpiece transport pallet 20 is positioned to correspond to the rail 35, respectively.

(bl) Next, as shown in FIG.
When the bar 38 is pushed out in the direction of arrow B, the work W held by the two claws 24 and 250 of the work transport pallet 20 is paid out onto the rail 35, and the work W moves from (a) to (b). Move to. then,
The workpiece W is prevented from rotating by the rotation prevention bar 13.

(C1 Next, the endless chain 51 of the feed bar device 50
51 rotates intermittently, the long bar 52 moves the workpiece W.
is moved from (b) to (c). At that time, work W
rotation is prevented by the rotation prevention par 14.

(dl Next, the L-shape 59a of the pusher 55.

60a, 61a, 59b, 60b, and 61b are lifted up as shown by the broken lines, and when the endless chain 51 of the feed (z) device 50 is intermittently rotated again, the long bar 5
2, the workpiece W is moved from (c) to (d).

At this time, the workpiece W transferred to the area E of the pusher 55 is prevented from rotating by the rotation prevention par 15.

(ill Next, the cursive shapes 59a, 60a, 61a
When 59b, 60b, and 61b are lowered as shown by solid lines and the frame 56 is moved in the direction of arrow M, the workpiece W moves from (d) to (e).

(f) Next, the cursor shapes 59a, 60a, 61a and 59b, 60b, 61b are lifted again as shown by the broken lines, and then the pusher 55 is returned in the direction of the arrow N. At this time, the subsequent workpiece W is being transferred to the position (d).

(g) Next, the above-mentioned cursive shapes 59a and 60a again.

61a, 59b, 60b, and 61b are lowered as shown by solid lines, and then the frame 56 is moved in the direction of arrow M, the trailing workpiece W moves from (d) to (e), and the preceding workpiece W moves. moves from (E) to (E), and is delivered to the work gripping tool 66 of the lifting elevator 65, and the neck portion 8 of the work W is gripped by the two claws 71 and 72.

(hl 1 of the work gripping tools 66 of the lifting elevator 65
When the workpiece W is gripped, the lifting elevator 65 descends by one pinch in the direction of the arrow G.

As described above, a fixed number of works W are simultaneously delivered to the elevating elevator 65 from the work transport pallet 20 that is continuously transported by the free flow conveyor 1. Then, the workpiece W transported downstairs by the lifting elevator 65 is discharged to the next process by means not shown.

〔Effect of the invention〕

As described above, the present invention provides a certain number of rails that are arranged in parallel between the conveyor controller 7 that conveys the workpiece conveyance pallet and the lifting elevator that conveys the workpieces in the vertical direction, and that the front half of the rail is A feed bar device is provided to move the workpieces delivered from the workpiece conveyance barret onto the rail to the area of the pusher, and a fixed number of workpieces supported by the rail are transferred to the lifting elevator at a rear half of the rail. We installed a pusher that dispenses the workpieces at the same time, so we can intermittently handle the continuously conveyed workpieces by a certain number.
Moreover, it can be reliably transferred to the next process.

3

[Brief explanation of drawings]

FIG. 1 is a side view of the automatic work feed device according to the present invention;
FIG. 2 is a plan view of the automatic work feed device according to the present invention;
Fig. 3 is a sectional view taken along line m-nr in Fig. 1, Fig. 4 is an enlarged plan view of essential parts of the automatic workpiece feeder according to the present invention, Fig. 5 is a sectional view taken along the line V in Fig. 4, and Fig. 6 is It is a side view of a workpiece. DESCRIPTION OF SYMBOLS 1... Conveyance conveyor, 20... Workpiece conveyance bullet, 35... Rail, 35a... First half of rail, 3
5b... rear half of rail, 50... feed bar device,
55... Pushing machine, 65... Lifting elevator, E
...Area of the pushing machine, W...Work.

Claims (1)

[Claims] A certain number of rails are installed in parallel between a conveyor that conveys a workpiece conveyance pallet and a lifting elevator that conveys a workpiece in the vertical direction, and the front half of the rail is provided with a conveyor that conveys a workpiece conveyance pallet and a lifting elevator that conveys a workpiece in a vertical direction. A feed bar device is installed to move the workpiece to the area of the pusher,
and an automatic workpiece feeding device, which is provided with a pusher installed in the rear half of the rail for simultaneously discharging a fixed number of workpieces supported by the rail to the elevating elevator.