JPH0542441A - Automatic bar feeder - Google Patents

Abstract

PURPOSE:To provide an automatic bar feeder for automatically feeding, for example, working bars to a lathe. CONSTITUTION:Material shelves 12a-12d capable of placing bars B of various sizes, a bar taking device 20 for taking out bars B1-B4 of a desired size from the material shelves 12a-12d, a finger selecting device 3 for selecting fingers F of various sizes for holding the rear end parts of the bars B1-B4 of various sizes placed on the material shelves 12a-12d, and a pushing device 4 for pushing the bars B1-B4 held by the selected finger are provided. A control part for conducting the control so that, for example, a bar of a size corresponding to the instruction input to a lathe L is taken out from the material shelves 12a-12d through the bar take-out device 20, the finger F corresponding to the taken-out bar B1-B4 is selected by the finger selecting device 30 and connected to the bar B1-B4, and the bar B1-B4 held by the finger is pushed by the pushing device 40 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic bar feeder,
In particular, the present invention relates to an automatic bar material feeder for automatically supplying bar materials of various thicknesses into a lathe spindle.

[0002]

2. Description of the Related Art For example, a bar may be used to process rods of various thicknesses. In such a case, conventionally, a bar with a specified thickness is manually selected, the selected bar is set on the spindle of the lathe, and when the predetermined processing is completed, the next bar is selected. Then, the lathe was processed by setting it on the lathe.

[0003]

However, if the bar material of the specified thickness is manually set on the lathe as in the prior art, the work efficiency is poor, the labor cost is high, and the cost of the product is reduced. It was a big problem.

Therefore, the present invention has been made to solve the above problems, and provides, for example, an automatic bar feeder capable of automatically supplying bars of various thicknesses to a lathe. The purpose is to

[0005]

In order to solve the above-mentioned problems, the present invention provides a material shelf on which rods of various thicknesses can be placed,
A bar material take-out device for taking out a bar material having a desired thickness from the material shelf and fingers having various thicknesses for gripping the rear ends of the bar materials having various thicknesses placed on the material shelf are selected. A finger selection device and an extruding device for extruding the bar material gripped by the finger are provided, and a bar material having a thickness corresponding to the instruction input is taken out from the material shelf through the bar material taking out device and taken out. The control unit controls the finger corresponding to the bar to be selected by the finger selection device, connected to the bar, and the bar held by the finger to be extruded by the extruding device.

[0006]

According to the present invention, first, rods having various thicknesses are previously placed on the material rack. In this state, for example, processing data (for example, material, diameter, length, etc.) of a material to be subjected to lathe processing is input from a data input section provided on the lathe. In such a state, the control unit causes the bar material take-out device to take out the bar material having the material and thickness corresponding to the processing data from the material shelf,
The finger selection device is caused to select the optimum finger for the extracted bar material, and the extrusion device is controlled to extrude the bar material gripped by the finger in the main axis direction of the lathe.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to illustrated embodiments. First, the positional relationship between the automatic bar feeder S of the present invention and the lathe L will be described with reference to FIG.

As shown in FIG. 4 (B), an automatic bar feeder S is arranged on the spindle side of the lathe L. A bar B is loaded into the automatic bar feeder S, and the bar B is supplied to the lathe L one by one by the control operation of the automatic bar feeder S described below.

Next, the structure of the automatic bar material feeder S will be described with reference to FIGS. 1 and 2. 1 is a side view of the automatic bar feeder S, FIG. 2 (A) is a plan view, and FIG.
Is a front view.

As shown in FIGS. 1 and 2A and 2B, the automatic bar feeder S is a material rack device 10 for preliminarily mounting bars of various thicknesses, and data input. A bar material take-out device 20 for taking out a bar material from the material shelving device 10 in response to a designated input from the section, a finger selection device 30 for selecting a finger having an optimum thickness for the taken-out bar material, and a finger gripped by the finger. It is configured by an extruding device 40 and the like that extrudes the bar material in the lathe direction. The respective devices will be described below.

Material Shelving Device 10 As shown in FIG. 1, in the material shelving device 10, four cylinders 13a to 13d are fixed to a support column 11 at a predetermined interval in a diagonally downward left direction, and each cylinder 13a to 13d is fixed. On the upper part of the table, crosspiece-shaped material shelves 12a to 12d are attached. L-shaped stoppers 14a to 14d are attached to the tips of the output shafts of the cylinders 13a to 13d to prevent the rods from falling. The stoppers 14a to 14d are configured to move back and forth along the lower surface of the material shelf in accordance with the movement of the output shaft. Bar B ₁ .about.B ₄ of each on each stock rack 12a~12d predetermined thickness is placed. As shown in FIG. 2 (A), three material shelving devices 10 having such a structure are mounted on the left and right sides and in the center.

As shown in FIG. 1, the bar material take-out device 20 has a mounting arm 2 on the upper and lower right side surfaces of the device body H.
1a and 21b are provided, and sprockets 22a and 22b are attached to the tips of the attachment arms 21a and 21b. A roller chain 23 is stretched between the sprocket 22a and the sprocket 22b.
A large number of hooks 24 for taking out rods are attached to. A motor M is disposed below the inside of the apparatus main body H, and a drive chain 25 is stretched between the output gear 26 of the motor M and the sprocket 22b. In the vicinity of the upper sprocket 21a, an auxiliary shelf 27 is provided that guides the rod material placed on the hook 24 and conveyed and rolls to the left. A guide guide 28 having a V-shaped cross section is arranged at a position for receiving the rolled bar.

Finger Selector 30 FIG. 3 shows a finger extractor 30 and an extruder 40.
An enlarged view of (see FIG. 2A) is shown.

As shown in FIGS. 1 and 3, the apparatus main body H
A stocker mounting base 31 is arranged on the upper left side of the inside, and a disk-shaped finger stocker 33 in which fingers of various thicknesses are inserted is installed in the stocker mounting base 31.
A motor 32 for rotating and driving is mounted. A cylindrical finger F is provided on the outer peripheral side of the finger stocker 33.
Are formed with a plurality of holes 34 into which one end of the is inserted.
The other end of the finger F is formed in a concave shape so that the rear end of the bar B can be inserted as described later, and the U-shaped grooves 36a, 3a of the finger exchange lever 36, which will be described next, are formed in the central portion in the longitudinal direction.
A groove F1a into which 6b is fitted is formed.

Extruder 40 In FIG. 3, a motor 37 for rotationally driving a finger exchange lever 36 is attached to an output shaft of a cylinder 38. The U grooves 36a and 36b are formed at both ends of the lever 36 so as to open in the rotation direction (counterclockwise direction). When the cylinder 38 is pushed in the direction of the arrow X ₁ , the finger F inserted in the finger stocker 33 is inserted.
_The lever 36 is pulled out, and the lever 36 rotates 180 degrees with the finger F _a still fitted. When the lever 36 is pulled back in the direction of the arrow X _{2 in} this state, the left end of the finger F _a is inserted into the push rod receiving portion P ₁ attached to the tip of the push rod P.

Next, the structure of the control system of the automatic bar feeder S will be described with reference to FIG. As shown in FIG. 4A, a control unit 51 including a microcomputer and the like stores a ROM 52 that stores a program that controls the entire automatic bar feeder, and a RAM 5 that temporarily stores processing data.
3 and a data input section 54 provided on the lathe L side (see FIG.
(See (B)), the bar material take-out device 20, the finger selection device 30, and the push rod pushing device 40 are connected.

Next, the operation of the automatic bar feeder S constructed as above will be described with reference to the flow chart shown in FIG. First, a plurality of bars are placed on the material shelves 12a to 12d (step S1). In this case, each material shelf 12
a to 12d have bar materials B _{1 to} B ₄ each having a certain thickness.
To place. Next, the data (for example, material, diameter, length, etc.) of the bar material to be processed is input from the data input unit 54 of the lathe L (step S2). When a processing start button (not shown) is pressed in this state, the following operation is started.

In step S3, the processing data input is input.
The bar material is selected according to the data. That is, for example, the processing
The bar material conforming to the data is the bar material B on the material shelf 12a.₁And
The output shaft of the cylinder 13a extends and the stopper
14a moves to the left, and the first bar B_1aIs Laura Chae
To reach the vicinity of the station 23. Then, it rotates counterclockwise.
The hook 24 attached to the roller chain 23
Then the first bar B _1aAbut on the underside of the bar B_1aTo
As the roller chain 23 rotates, it is conveyed to the left. Low
Bar B that has passed the top of the chain 23_1aIs an auxiliary shelf 2
It was transferred to 7, rolled on the auxiliary shelf 27, and eventually the guide guy.
It falls on the doddle 28 and takes a position to engage with the push rod.

On the other hand, based on the input of the data input section 54,
Bar material B_1aFinger F _aTo choose
The finger stocker 33 rotates counterclockwise,
Nger F_aReaches the position of code Y (see Fig. 1)
The finger stocker 33 stops rotating (step
S4). In this state, the finger replacement lever 36
Rotates counterclockwise, and the U groove 36a moves into the finger F._aof
Groove F_1a(See FIG. 3). Then cylinder 3
8 is arrow X₁Finger F when moving in the direction_aIs fin
It is pulled out from the hole 34 of the Garstocker 33. Next
Then, the finger exchange lever 36 rotates counterclockwise,
Corresponds to the position where the bar is placed on the guide 28
When the cylinder 38 stops at the position₂In the direction
Move and finger F_aRear end F_abIs push rod receiving part P
₁It is inserted inside (step S5). In this state
The finger exchange lever 36 reverses slightly, and the U groove 36_a
And finger groove F_1aThe fitted state with is released. Do
And push bar P shows arrow X₁Protruding in the direction, bar B_1aThe arrow
Mark X₃Push in the direction. Arrow X₃Not shown in the direction
The spindle of the board L is arranged and the bar B_1aIs automatically installed on the spindle
(Step S6). Automatically installed bar B_1aAgainst
Then, the lathe L performs a cutting process (step S7).

As described above, the lathe processing of the bar having the thickness corresponding to the input data is performed. When the lathe processing of the first bar is completed, the steps S1 to S7 are repeated according to the input to the data input unit 54, whereby the bar is automatically supplied to the lathe.

[0021]

As described above, according to the present invention, for example, lathe processing of a bar material input and designated is carried out only by previously mounting bar materials of various thicknesses on a material rack. No labor is required to install the material on the lathe, contributing to product cost reduction.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2A is a plan view of the embodiment, and FIG. 2B is a front view.

FIG. 3 is an enlarged view of a main part of the embodiment.

FIG. 4A is a block diagram of a control system of the above embodiment,
(B) is a diagram when the automatic bar feeder of the above-mentioned embodiment is applied to a lathe.

FIG. 5 is a flowchart showing the operation of the embodiment.

[Explanation of symbols]

 10 ... Material shelving device 12 ... Material shelving 13 ... Cylinder 14 ... Stopper 20 ... Bar material removing device 23 ... Roller chain 24 ... Hook 27 ... Auxiliary shelf 28 ... Guide guide 30 ... Finger selecting device 33 ... Finger stocker 34 ... Hole 36 ... Finger exchange lever 38 ... Cylinder 40 ... Extruding device 51 ... Control unit 54 ... Data input unit B ... Bar material F ... Finger

Claims (1)

[Claims] 1. A material shelf on which bar materials of various thicknesses can be placed, a bar material take-out device for taking out bar materials of a desired thickness from the material shelf, and various bar stockers mounted on the material shelf. Equipped with a finger selection device that selects fingers of various thicknesses that grip the rear end of a bar with a thickness, and an extruding device that extrudes the bar material that is gripped by the fingers, and a thickness that corresponds to the instruction input. The bar material is taken out from the material rack through the bar material taking out device, the finger corresponding to the taken out bar material is selected by a finger selecting device and is connected to the bar material, and the bar material held by the finger is taken out. An automatic bar material feeder, comprising a control unit for controlling so as to be extruded by an extruding device.