JPH04358627A - Feed destination switching device in workpiece feeder of tube type - Google Patents

Abstract

PURPOSE:To provide a device whereby a destination of a workpiece can be easily switched, in a feeder for feeding the workpiece molded by a header, by a tube. CONSTITUTION:Two receiving holes 22 in a longitudinal direction are provided through in a block 20, and to a front surface of the block 20, a movable body 25, in which a single feeding hole 26 alignable to the receiving hole 22 is provided through, is mounted through a parallel link 28. A reciprocating motion of circular arc-shaped locus is performed by longitudinally moving a piston rod 34 of an air cylinder 32 to switch an outlet of the feeding hole 26 aligned to an inlet of any of the receiving holes 22 and also elastically contracting a seal ring 44, fitted around the inlet of the receiving hole 22, by the movable body 25 by tension of a compression spring 41 so as to press the movable body to the front surface of the block 20. An outlet of a feed tube 1 is fitted to the feeding hole 26, and an inlet of an individual connecting tube 23 is fitted to the receiving hole 22.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is used to switch the feeding destination in a device that feeds a workpiece formed by a header to a processing machine such as a secondary processing machine using a flexible tube. Regarding the equipment used.

0002

[Prior Art] The applicant has proposed a tube-type workpiece feeding device as a means for feeding a workpiece such as a thread material formed by a header before thread cutting to a secondary processing machine such as a thread rolling machine. was developed and a patent application was filed on May 13, 1991.

This tube-type workpiece feeding device will be explained with reference to FIGS. 1 and 2, which show an embodiment of the present invention. In the figure, reference numeral 1 denotes a flexible feeding tube, which has an inner diameter smaller than the length of the thread material a before thread cutting formed by header 2, and an air conveyor 3 is installed in the middle of the tube. Intervention is provided.

[0004] As shown in FIG. 2, this air conveying device 3
Inside the main body 4, which is constructed by airtightly connecting the front and rear pipe bodies, there is a single passage 5 with the front end serving as a spout 6 and the rear end serving as a suction port 7.
is formed, an annular air introduction space 8 is formed around the passage 5, and a communication passage 9 is formed on the inner surface of the passage 5 and communicates with the passage 5, facing the jet nozzle 6 side. When pressurized air is supplied from the pressurized air supply source 11 through the connection port 10 opened on the outer surface side of the introduction space 8, the air is injected from the communication path 9 toward the path 5 in the arrow direction. The pressure on the outlet 6 side is high and the pressure on the suction port 7 side is low, so that a high-speed air flow from the suction port 7 toward the jet port 6 is generated. This air conveyor 3 is connected in the middle of the feed tube 1 as described above with the suction port 7 facing the inlet 1a side of the feed tube 1, and the receiving tube is connected to the inlet 1a of the feed tube 1. 13 is installed directly below the workpiece take-out position of the header 2.

Then, the screw material a formed by the header 2 is projected to the front of the die 14, and the finger 15
When it is pinched by the tube and falls into the receiving tube 13 due to its rotation and release, it is carried inside the feeding tube 1 toward the outlet 1b by riding on the above-mentioned high-speed air flow. During this time, since the inner diameter of the feed tube 1 is smaller than the length of the thread material a, the thread material a is transported with its head facing forward, and the outlet 1b of the feed tube 1 is connected to the thread rolling machine. By making it correspond to the work supply section, the screw material a can be sequentially supplied thereto in a constant posture.

[0006]

[Problems to be Solved by the Invention] This tube-type feeding device has a flexible tube that allows for free piping to be used to configure the feeding path, thereby making it possible to connect the header and secondary processing machines such as rolling machines. In addition to having a greater degree of freedom in placement, for example, in order to achieve higher efficiency FA (factory automation), the feeding destination can be switched between two or more secondary processing machines as appropriate. In this kind of tube feeding device,
There has also been a strong desire to develop a device that can easily switch the delivery destination.

[0007]

[Means for Solving the Problems] The present invention has been completed based on such a request, and it is an object of the present invention to provide a main body with a passage provided with a spout and a suction port at both ends, and a passage around the passage. An annular air introduction space is formed, and a communication path is formed on the inner surface of the air introduction space that faces the jet outlet and communicates with the passage, and pressurized air is supplied from the connection port opened on the outer surface of the air introduction space. An air conveyor that creates a high-speed air flow from the suction port to the jet port side by supplying high pressure to the jet port side and low pressure to the suction port side by supplying A flexible tube with a small inner diameter is interposed in the middle, and the inlet of the tube corresponds to the workpiece take-out part of the header, and the workpiece taken out from the header is transferred to the outlet side of the tube using a high-speed air flow. This is a feeding destination switching device for a tube-type workpiece feeding device, in which a block has a plurality of transparent receiving holes in the front and back directions, and the entrance of each receiving hole opens on the front side. , a movable body is provided with one delivery hole that can be aligned with the receiving holes, and the movable body is moved to a position where the outlet of the delivery hole is switched and aligned with one of the inlets of each receiving hole. A drive device is provided, and the outlet of the tube is connected to the inlet of the delivery hole of the movable body, and the outlet of each receiving hole of the block is connected to the work supply section of each processing machine such as a secondary processing machine. A connected configuration was adopted.

[0008]

[Operation] The present invention has the above structure, and when the outlet of the sending hole of the movable body is aligned with the inlet of the receiving hole of one of the blocks, high-speed air is supplied to the outlet side of the tube. The processed workpiece is supplied from the delivery hole through a receiving hole aligned with the delivery hole to a work supply section of the processing machine connected to the outlet of the receiving hole. When the movable body is moved by the drive device to align the outlet of the delivery hole with the entrance of another receiving hole of the block, the workpiece is transferred through the receiving hole to the workpiece supply section of another processing machine connected to it. is supplied.

[0009]

Effects of the Invention In other words, according to the present invention, the feeding destination of the workpiece can be easily changed by simply moving the movable body using the drive device. This has the advantage that it can be easily handled when feeding a workpiece to the next processing machine or when taking out a defective workpiece midway through.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. Outlet 1b of feed tube 1 from header 2
The structure up to the side is the same as that described above, and as shown in FIG. 1, the feed destination switching device 17 according to the present invention is connected to the outlet 1b side of the feed tube 1.

Details of the destination switching device 17 are shown in FIGS. 3 and 4.
This will be explained by. On one side of the base 19 is a block 20.
is fixed with a bolt 21, and two receiving holes 22 passing through both the front and rear surfaces are formed at a constant interval in the left-right direction in the block 20, and in each receiving hole 22, the above-mentioned hole is formed. The inlet 23a of the connecting tube 23, which has the same inner diameter as the feeding tube 1, is inserted up to the inlet of the receiving hole 22, and the stopper 24 attached to the outlet of the receiving hole 22, respectively.
Fixed by

On the front side of the block 20, there is a movable body 25, which has one delivery hole 26 that can be aligned with each of the above-mentioned receiving holes 22. The distal ends of each parallel link 28 are attached to the upper and lower surfaces of the movable body 25 by supporting them with shafts 29, and the above-mentioned feeding tube 1 is inserted into the delivery hole 26 of the movable body 25. The outlet 1b is fitted up to the outlet of the delivery hole 26, and is fixed by a stopper 24 attached to the entrance of the delivery hole 26.

An air cylinder 32 is mounted on a mounting body 31 erected on the side of the movable body 25, and faces the movable body 25 side.
The piston rod 34 is attached to the piston rod 34 so that it can swing freely around the vertical axis, and a connecting tool 35 provided at the tip of the piston rod 34 is connected to the movable body 25 by a pin 36. 25 reciprocates in an arcuate trajectory while maintaining a constant posture, and in the forward and backward positions, the outlet of the delivery hole 26 of the movable body 25 is connected to the entrance of either one of the receiving holes 22 of the block 20. It is becoming consistent.

At the front of the movable body 25, two guide tubes 38 facing in the front-rear direction are attached at a distance, and the tip of a sliding rod 39 is fitted into each guide tube 38 to freely slide. The pressing body 40 is attached to the lower surface of the movable body 25 by being moved and biased by the elastic expansion force of the compression coil spring 41 installed between the guide tube 38 and the tip of the guide tube 38. The rear surface of the movable body 25 is pressed against the front surface of the block 20 by pressing the abutting portion 42 formed in the movable body 25 . A circular fitting groove 43 is bored around the receiving hole 22 on the front surface of the block 20, and a seal ring 44 is fitted into the groove.

As shown in FIG. 1, separate receiving devices 46 are connected to the exit 23b sides of the two connection tubes 23 pulled out from the destination switching device 17. As shown in FIG. 5, in this receiving device 46, the lower surface of the back end of a discharge pipe 47 into which the outlet 23b of the connecting tube 23 is fitted is open, and a butting body 48 is provided at the back end. At the same time, below the discharge pipe 47, a shooter pipe 49 having a longitudinal cut groove 50 formed on its lower surface is arranged in an oblique position with its tip downward. Connecting tube 23
When the screw material a is ejected from the outlet 23b of the abutting body 4
8, it falls into the upper end of the shooter tube 49, and the shaft portion fits into the cut groove 50, allowing it to slide down along the shooter tube 49 while being supported in a suspended state. As shown in FIG. 1, a separate flat die rolling machine 52 is installed corresponding to the lower end of each shuttle tube 49.

Next, the operation of this embodiment will be explained. Piston rod 34 of air cylinder 32 of feeding destination switching device 17
When the movable body 25 moves backward, as shown by the solid line in FIG.
is in the retracted position, the outlet of the delivery hole 26 of the movable body 25 is aligned with the entrance of the receiving hole 22 on the front side of the block 20, and the movable body 25 is sealed by the elastic expansion force of the compression coil spring 41. The ring 44 is pressed against the front surface of the block 20 while being crushed, and the outlet 1b of the feeding tube 1 and the inlet 23a of the connecting tube 23 on the front side are in airtight communication. Therefore, the screw material a, which has been fed to the outlet 1b side of the feeding tube 1 on the high-speed air flow, passes through the connecting tube 23 on the front side, and then passes through the receiving device 46 connected thereto. It slides down the shuttle tube 50 and is supplied to the rolling machine 52 on the front side.

When the type of thread material a changes or the thread cutting mode changes, the thread material a is transferred to the other rolling machine 52.
When the piston rod 34 of the air cylinder 32 is advanced, the movable body 25 moves to the compression coil spring 4.
The pressing body 40 moves in an arc shape while pushing back against the elastic force of the compression coil spring 41, moves to the forward position shown by the chain line in FIG. The outlet 1b of the feed tube 1 is airtightly communicated with the inlet 23a of the connecting tube 23 on the other side. As a result, the thread material a passes through the connecting tube 23 on the other side, slides down the shuttle tube 50 of the receiving device 46 connected thereto, and is supplied to the other rolling machine 52.

Note that the two receiving holes 22 of the block 20
Only one of them is connected to the rolling machine 52, the other is connected to the recovery machine as a discharge hole, and the movable body 25 is driven in conjunction with a defective product detection device provided in the middle of the feeding route. Then, if a defective screw material a is produced, it can be used to discharge and recover it midway.

Furthermore, the manner in which the movable body 25 is driven is not limited to that of the above-mentioned embodiments; for example, the movable body 25 may be moved in sliding contact with the front surface of the block 20; It is also possible to provide three or more number 22.

Furthermore, the present invention can be similarly applied to switching the feeding destination when a workpiece formed with a header other than the thread material a is fed through a tube.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the overall structure of an embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of the air conveyor.

FIG. 3 is a partially cutaway plan view of the destination switching device.

FIG. 4 is a perspective view thereof.

FIG. 5 is a longitudinal sectional view of the receiving device.

[Explanation of symbols]

a: Screw material (forming work) 1: Feeding tube
1a: Inlet (of tube 1) 1b: Exit (of tube 1) 2: Header 3:
Air conveyor 4: Main body 5: Passage 6: Spout 7: Suction port 8: Air introduction space 9: Communication path 10: Connection port

Claims (1)

[Claims] 1. An annular air introduction space is formed around the passage of a main body, which has a passage provided at both ends with a jet nozzle and a suction port, and the jet nozzle is provided on the inner surface of the air introduction space. forming a communication path oriented toward the side and communicating with the passage;
By supplying pressurized air from a connection port opened on the outer surface side of the air introduction space, the jetting port side is made high pressure and the suction port side is made low pressure, and high-speed air is directed from the suction port toward the jetting port side. An air conveyor that generates a flow is interposed in the middle of a flexible tube having an inner diameter smaller than the length of the workpiece to be molded by the header, and the entrance of the tube is made to correspond to the workpiece take-out part of the header. A feeding destination switching device for a tube-type workpiece feeding device configured to feed a workpiece taken out from a header to the outlet side of the tube by the high-speed air flow, and for receiving multiple pieces in the front and back direction. A movable body having one delivery hole that can be aligned with the receiving hole is provided on the front surface of the block, which has a hole therein, at which the inlet of each of the receiving holes opens. providing a drive device for moving the movable body to a position where the outlet of the hole is switched into alignment with one of the inlets of each of the receiving holes, and connecting the outlet of the tube to the inlet of the delivery hole of the movable body; A feeding destination switching device in a tube type work feeding device, characterized in that an outlet of each of the receiving holes of the block is connected to a respective work feeding section of each separate processing machine such as a secondary processing machine.