JPS6049537B2 - Material supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a material supply device for feeding a bar-shaped material into a machine such as a cutting machine.

The present invention is a novel material feeding device that can take out a large number of materials to be processed one by one from a pedestal on which the materials are placed and reliably feed them into the main body of a processing machine while adjusting the height position according to the diameter of the materials. We aim to provide the following.

Description will be given below with reference to the accompanying drawings.

Figures 1A and 1B show the entire pipe cutting machine equipped with a material supply device according to the present invention.

The illustrated pipe cutting machine basically includes a material supply section, a cutting machine main body, and a material discharge section. The configuration of each part will be explained in detail below. As shown in enlarged views in Figures 2A to 2C (see also Figures 1A and IB), the material supply device has a pipe 1.
0 (FIGS. 1A and 2A) extending in the longitudinal direction of a support rod 13 and a plurality of feed rollers 15 fixed on this support rod 13.
and has.

In the illustrated embodiment, the feed roller 15 is constructed by arranging a plurality of pairs of rollers inclined in a figure eight shape. At least one of the rollers 15 (two pairs in the figure) is the drive roller 1
Acts as 5'. The support rod 13 is vertically supported by link arms 17 and 17' forming a link mechanism.

That is, the support rod 13 is inserted into a hole (as shown) in a bracket 19 to which the link arms 17 and/or 17' are pivotally connected. The other ends of the link arms 17 and 17' are pivotally connected to a bracket 29 fixed to a base 23 supported by a support leg 21. For example, the bracket 29' of the endmost link arm 17'' (FIGS. 1A and 2B) is formed as a slider that is slidably mounted on the base 23, and the feed screw shaft 33 is engaged with the bracket 29'. A screw hole (not shown) is formed in the feed screw shaft 33. One end of the feed screw shaft 33 is rotatably supported by the bracket 27 and rotated by a motor 35. Thus, when the motor 35 operates, the feed screw shaft 33 rotates. Bracket 29' is moved back and forth.As a result, bracket 2
A link arm 17'' pivotally connected to the support rod 9' performs a link movement to move the support rod 13 up and down.The height position of the support rod 13 is detected by a height detection switch 37. That is, the height detection position 37 is set to a predetermined position. When a detector (not shown) attached to the support rod 13 touches the detection switch 37, the operation of the motor 35 is stopped.Two pairs of drive rollers 15'', 15'' are connected by a belt 39 and rotated by a motor 41.

The material supply device also has a kick-in device that automatically drops the material 10 from the pedestal 43 onto the feed rollers 15, 15'' as shown in FIG. 2A.The kick-in device is shown in FIG. Although not shown in FIG. 1B, they are provided near both ends of the support rod 13, for example.
The kick-in device has a support 49 that is fixedly supported by the base 23 and a receiving member 43 that is pivotally connected to the support 49 with a pin 47. One end of the receiving member 43 is connected to the upper end of the plate 53 by a cable 51 constituting a connecting member. two plates 5
3 are connected by a pin 55 with the support rod 13 in between, and a roller 57 having a recess corresponding to the outer periphery of the support rod 13 is rotatably provided at the center of the pin 55.

The plate 53, the pin 55, and the roller 57 constitute a fixture that transmits the vertical movement of the support rod 13 to the receiving member 43 via the cable 51 and rotates the receiving member 43 about the pivot pin 47. Thus, for example, in FIG. 2A, the right receiving member 43 rotates counterclockwise about the pin 47 in response to the downward movement of the support rod 13 (the position shown by the broken line in FIG. 2A) and is placed on it. The stuck material 10 is kicked in onto the roller 15. The receiving member 43 is normally held in the solid line position in FIG. 2A, for example by a spring (not shown), and has a suitable sloped upper surface to prevent the blank 10 from falling onto the roller 15 in this position.
In FIG. 2A, the kick-in device is provided on both sides of the support rod 13, but this is because it is assumed that the material storage section (not shown) is arranged on both sides of the material supply device in FIG. 1B. Basically, it is sufficient to provide it only on at least one side of the support rod. Although not particularly shown in the drawings, the material storage section is, for example, in the form of a normal inclined pedestal on which a large number of materials are lined up, and is adapted to be transferred onto the receiving member 43 one by one. It will be understood that the same purpose as described above can also be achieved by connecting the receiving member 43 via the cable 51 to a bracket or plate similar to the bracket 19 fitted into the support rod 13. With the above structure, each time the support rod 13 descends, the material falls one by one from the receiving member 43 onto the feed roller 15, and when it descends by a predetermined stroke, the height detection switch 37
It rises again to the height position set by and stops. The downward stroke of the support rod 13, i.e. the slider 29''
For example, the backward stroke of the origin detection switch 59 (first
Figure A). For example, known limit switches may be used as the height detection switch 37 and the origin detection switch 59. ) The receiving members 43 are provided near both ends of the support rod 13, for example, and the material 10 is bridged and supported thereon.

Even when the temporary support rod 13 is in its lowered position, the subsequent material will not fall off the receiving member 43 due to the material located on the feed roller. The material discharge device disposed on the right side of the cutting machine main body in FIG. 1A may also be configured in exactly the same manner as the material supply device.

However, although the kick-in device is not necessary for the material discharge device, it is also possible to provide a kick-out device (not shown) corresponding to the kick-in device.In other words, a rope mechanism similar to the rope 51 in the kick-in device can be provided. It is also possible to make the processed material fall to the outside (on both sides of the discharge device) instead of taking it out in the direction of the material axis.Parts in the material discharge device that correspond to the material supply device have the same number with the suffix A. When the motor 35A is operated and the feed screw shaft 33A is rotated, the link arm 17N'',
17N causes the support rod 13A to move up and down.

The feed rollers 15A can basically all be driven free rollers and a driving roller is not necessarily required. This is because the processed material is generally pushed out from behind by the following material and does not require active feed drive means. However, it goes without saying that any of the rollers 15A may be configured as a drive roller driven by a motor. What is essential in the material discharging device is that the height position can be adjusted according to the material diameter, similar to the material feeding device. In this way, the height positions of both the material supply device and the material discharge device are adjusted according to the material diameter, and the material can be accurately positioned with respect to the later-described vice device or chuck device and the central opening of the processing machine main body. .

A known chuck device 61 is provided on both sides of the processing machine body.
, 63 (FIG. 1A) are provided.

Both chuck devices 61 and 63 are cylinders 62 and 64, for example.
A hydraulic V-shaped chuck may be used. Chuck device 61
, 63 may be any other known chuck device. The left chuck device 61 is stationary, and the right chuck device 63 is movable in the axial direction by a handle 65. Next, the main body of the processing machine will be explained in detail.

The processing machine body may be a typical cutting machine known in the art, but preferably has a fast feed device.

That is, it has a cutting tool rapid feed device that quickly advances the cutting tool to near the outer periphery of the material depending on the diameter of the material. By providing a fast-forwarding device, it is possible to shorten working time or improve work efficiency. The principle of the fast-forwarding device will be explained with reference to FIGS. 3 and 4. The block 71 is a normal scroll type tool holder, and the rotation of the scroll 73 allows one or more cutting tools 75 arranged in the circumferential direction to be mounted.
This is to move the radially forward and backward.

Now, in order to rapidly feed the cutting tool 75 to the vicinity of the outer periphery of the material 10, a device as shown in FIG. 3 is provided. The ring gear 7 is connected to the fixed plate 73'' through helical teeth 120.
2 is rotatably attached, and a gear 74 fixed (keyed) to a shaft 76 meshes with the gear 72.

A gear 77 is fixed to the other end of the shaft 76, and a gear 78 fixed to a shaft 79 meshes with this gear 77. A sleeve-shaped sliding contact 80 is attached to the shaft 79 and is keyed so as to be slidable in the axial direction. A thread is cut on the outer periphery of the sliding contact 80, and the sliding contact 80 is screwed into a corresponding threaded hole formed in an annular gear 81, which will be described later. A gear 87 having a clutch portion 94 is rotatably attached to the shaft 79 , and the gear 87 is rotated by a gear 86 connected to a motor 93 . Furthermore, a clutch member 88 having a clutch portion 95 that forms a dog clutch together with a clutch portion 94 is slidably keyed to the shaft 79. Clutch member 88
is slid in the axial direction by a fork 89 provided on the lever shaft 90. Although the lever shaft 90 may be operated manually, it is preferably operated automatically using an air cylinder or the like. The gear 81 is a gear 8 fixed to a shaft 83.
A gear 85 that meshes with the main shaft gear 84 is fixed to the other end of the shaft 83.

The main shaft gear 84 is fixed to the plate 73'' and is rotationally driven by the main shaft motor 2 (Fig. 4) which rotates it. Figs. 3 and 4 show the principle diagram, including the arrangement, shape, etc. of each gear and each shaft. The design is changed in various ways in relation to the space of the main body of the processing machine. Figure 4 shows the differential mechanism, and the belt pulley 05 connected to the main shaft motor 2 has a shaft 103.
The belt pulley 04 attached to the key is engaged.

Two gears 102 and 113 are fixed to the shaft 103, and gears 98 and 114 rotatably attached to the shaft 97 mesh with each of these gears. The gears 98 and 114 are formed with clutch portions 100 and 115, respectively, and are selectively engaged with clutch portions 101 and 116 formed on a clutch member 99 that is slidably keyed to the shaft 97. clutch member 99
is slid on the axle by a suitable fork (not shown). A gear 96 that engages with the ring gear 72 (FIG. 3) is fixed to the end of the shaft 97. The device configured as described above operates as follows.

When rapidly forwarding the cutting tool 75 by a predetermined distance toward the material 10, the lever shaft 90 is actuated to move the clutch portions 95, 94.
is engaged. Of course, the plate 73'' is not operating at this time.As a result, the gears 84, 85, 82,
81 is held stationary without rotating, so the fast-forward motor 9
3 is driven, its rotation is transmitted to the shaft 79 via gears 86, 87, clutch parts 94, 95, and clutch member 88. The rotation of the shaft 79 is caused by the gears 78, 77 and the shaft 76.
, are transmitted to scroll 73 via gears 74 and 72. In this way, the cutting tool 75 moves forward in the radial direction. By appropriately selecting the tooth ratio of each gear, deceleration (or speed increase) can be appropriately performed. When the shaft 79 rotates, the sliding contact 80 also rotates, but since the gear 81 does not move (the gear 81 is stopped by the large size of the main shaft gear, the sliding contact 80 rotates) The sliding contact 80 slides axially on the shaft 79 due to the action of its outer circumferential thread. Place the detection switch 9 in the appropriate position 1A, 91
If B and 91C are provided, for example, the position where the sliding contact 80 contacts the switch 91B corresponds to the fast-forwarding completion position of the cutting tool, and the clutches 94 and 95 are released at that position. Next, the main spindle motor 2 is rotated to start machining the material 10. When the main shaft motor 2 rotates, the rotation is transmitted to the gears 84 and 85, the shaft 83, the gears 82 and 81, and the sliding contact 80. At this time, the clutch portion 1 of the cutting feed clutch member 99 is slidably keyed on a shaft 97 provided separately.
01 is engaged with the clutch portion 100 of the gear 98 rotatably attached to the shaft 97, the rotation of the main shaft motor 2 is controlled by the gears 105, 104, the shaft 103, and the gears 102, 9.
8. The shaft 97 connected to the shaft 97 via the clutch member 99
The annular gear 72 is rotated by a gear 96 to which a key is fixed. By appropriately changing the ratio between the rotation of the annular gear 72 and the rotation of the gear 84, the machining speed in the radial direction of the cutting tool 75 is determined.
It is made to move forward at a slower speed than when it is sent by. When a predetermined cutting process is completed, the main spindle motor 2 is stopped by the detection switch 91C, and the clutches 94 and 95 are turned ON to reverse the fast-forward motor 93, and the cutting tool 75 is quickly returned by the reverse operation described above.

Alternatively, when the predetermined cutting process is completed, if the detection switch 91C switches the clutch member 99 to another gear 114 similar to the gear 98, the ratio between the rotation of the annular gear 72 and the rotation of the gear 84 (as described above) It is also possible to quickly return the cutting tool 75 in the radial direction while rotating it by appropriately setting the ratio (opposite to that for forward movement).
The sliding contact 80 detects the quick return completion position with the detection switch 91A.
This is the position where it comes into contact with the The apparatus shown in FIG. 3 is suitably incorporated into the processing machine main body 6 and machine stand 4 of FIG. 1A.

The positions of the detection switches 91A and 91B are adjusted according to the diameter of the material.

The operation of the apparatus described above is carried out substantially automatically, for example, by actuating corresponding switch buttons on a control box 8 (FIG. 1A) provided on the machine base 4 or the main body 6.

First, the motor 35 is operated to lower the support rod 13 to a predetermined position.

When the support rod 13 descends to a predetermined position, the detection switch 59
This causes the descent to stop. At this time, the material 10 on the receiving member 43 is dropped onto the feed roller 15. Next, by rotating the motor 35 in the reverse direction, the support rod 13 is raised to a predetermined height position. This position is detected by the detection switch 37. Therefore, the material on the feed roller is fed into the processing machine main body 6 by rotating the motor 41. When the material is fed into the processing machine main body, the chuck device 63 is activated to grip and hold the material. In the case of cutting, since the cutting position is marked in advance on the material 10, adjustment is made by moving the chuck device 63 from side to side in FIG. 1A using the handle 65 in order to bring the cutting position accurately to the position of the cutting tool. . When the positioning is completed, the other chuck device 61 is also operated and the material 10 is completely gripped by both chuck devices. Next, the clutches 94 and 95 are set to ON, and at the same time, the rapid feed motor 93 (FIG. 3) is operated to rapidly feed the cutting tool 75 to a predetermined position. This position is detected by the detection switch 91B. It is also possible to finely adjust the axial position (cutting position) of the material 10 at the rapid feed completion position of the cutting tool 75. This is because the cutting position of the material relative to the cutting tool can be adjusted more accurately if the cutting tool and the material are close to each other. Finally, the spindle motor 2 is activated to rotate the plate 73'' and move the cutting tool 75 forward at a predetermined cutting speed to perform machining.When the processing is completed, the cutting tool 75 is fast forwarded and the cut material is pushed with the remaining material while the cutting tool 75 is moved forward. The height position of the support rod 13A of the material discharging device is pre-positioned in advance in the same manner as the material feeding device, either simultaneously or separately.

Further, when the feed roller 15A of the material discharge device has a drive roller, the drive roller may be driven during discharge.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1A and 1B are a front view and a plan view of a cutting machine having a material supply device according to the present invention,
Figures 2A, 2B, and 2C are partial cross-sectional side views, front views, and plan views of the kick-in device, Figure 3 is a diagram showing the principle of the tool rapid feed mechanism, and Figure 4 is the principle of the differential mechanism. Figure shown.

2... Main shaft motor, 4... Machine base, 6...
...Main body of processing machine, 81--Control box, 10--◆Material, 13--Support rod, 15--Feed roller, 17--Link arm, 3
3...Screw shaft, 43...Receiving member.

Claims (1)

[Claims] 1. A plurality of feed rollers are mounted on a support rod supported vertically via a link mechanism, and the height position of the workpiece material supported on the feed roller approximately parallel to the support rod is adjusted to the diameter of the material. The support rod is rotatably supported above the feed roller by a connecting member via a fixture that moves up and down integrally with the support rod, about an axis parallel to the material curve. When the supporting rod is lowered, one end of the material receiving member is pulled by the connecting member, and the material receiving member rotates about the pivot axis, and the material receiving member is connected to one end of the material receiving member. A material feeding device characterized by dropping the processed material onto a feed roller.