JPH0271902A - Bar make-up mechanism in bar feeder - Google Patents

Abstract

PURPOSE:To reduce a planar space of a bar feeder by providing bar racks for placing bar and plural screw members having screwed recesses to be engaged with the bars, on the upper side of a guide member for supplying the bars. CONSTITUTION:Plural bars are placed on bar racks 22 and screw members 34 are turned at a specific angle and thereafter one bar W is manually dropped so as to be engaged with one of screwed recesses 34a. The above operation is repeated so as to arrange bars in the recesses 34a at the specific pitch. Then, the plural screw members 34 are rotated by a motor through a worm 44 so as to drop the bars W along the recesses 34a in order, and further drop them in guide rails 12 with a shutter 13 opened. Since a guide member 28 abuts the screwed projecting part 34b of the screw member 34, it is possible to surely hold the bars without being separated from the screw member 34 and supply them to a lathe through the guide rails 12.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is provided in a bar feeder that supplies bars to a machine tool such as a lathe, and is used to sequentially supply a plurality of bars to the bar feeder. This invention relates to a bar supply mechanism.

(Prior Art) Conventional bar stock feeding mechanisms of this kind usually include a material enclosure that accommodates a plurality of bars to be processed, and feed the bars one by one from this material shelf to a bar feeder. are doing. In addition, as such a bar supply mechanism, the width is slightly larger than the outside diameter of the bar so that even if the diameter of the bar is relatively small, the bar can be reliably fed one by one from the material shelf. The applicant has already proposed a system that includes a screw member having a spiral recess and that sequentially supplies the bar material engaged with the screw member to a bar material feeder by rotation of the screw member (for example, in actual practice). Publication No. 51-28778).

(Problem to be Solved by the Invention) However, in the conventional bar stock replenishment mechanism described above, the bar stock supply mechanism is such that the bar stock 1 (tooth) and the screw member etc. protrude in the width direction. Because of the arrangement, the planar space occupied between the bar feeders increases by the amount of protrusion. In the case of δ, there is a problem in that the required working space cannot be secured between adjacent bar feeders.

The present invention has been made in order to solve the problems of the above-mentioned conventional technology, and provides a bar feeder that can reduce the f:Iji space occupied by the bar feeder;
Our objective is to provide a municipal supply system for bar stock. (Means for achieving the object) In order to achieve the purpose of item 1, the present invention should be supplied to a processing machine! , disposed on two sides of a frame equipped with force guide members for supplying bar materials, and between a material shelf for placing said bar materials and said material guide member and said guide member. Ah, it is equipped with an L blade base or a plurality of screw members extending downward, which has a spiral recess into which the bar engages, and a driving device that rotationally drives the screw members. be.

(Function) Since the material shelf and the screw member are arranged on the upper blade or lower side of the feeder, the bar material replenishment mechanism is designed to prevent the rod (A) from protruding in the width direction of the feeder, and to reduce the amount of protrusion to a minimum of 1L. can be reduced.

(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

Fig. 1 is a front view of a bar feeder equipped with a bar replenishment mechanism according to the present invention, and Fig. 2 is a sectional view of this bar replenishment mechanism. This bar feeder 2 includes a stand 8 which is vertically expandable and retractable, and which is supported by the stand 8 and extends substantially horizontally in the direction in which the bar is fed to the J''lS lathe 4. A frame 6 is provided.A guide member, that is, a guide rail 12, which extends along the long hair direction of the frame 6, is fixed to one side of the frame 6 via a bracket 10.This guide rail 12 There is a shutter 13 on the top that can be opened and closed freely.
are provided, which open to the left and right in FIG. 2 when the bar W is lowered to the guide 1 knoll 12, and then close again. Further, within the guide rail 12, a feed arrow 14 (only the rear end is shown in FIG.・Substitute) is placed.

One end of the lobe 1G is connected to the rear end of the feed arrow 14.
ing. The other end of the lobe i6 is wound around a pulley 20 disposed at the @ end of the frame 6, and a weight 18 is connected to the other end of the lobe 16. Therefore, the feed arrow 14 moves to the front end of the frame 6 together with the bar W due to the descent of the weight 18, and thereby the bar W is supplied to the lathe 4.

The bar supply mechanism 30 includes a rod 1 extending in the longitudinal direction of the frame 6.
one material shelf 22, a plurality of side members 28 and screw members 3 arranged at predetermined intervals in the longitudinal direction of the frame 6;
It consists of 4. The material shelf 22 is supported at its neck by a plurality of support arms 24 that are fixed to one side of the 7-lens 6 and extend vertically upward, and the force-id member 28 is attached to the support arms 24 that extend vertically upward.・Fixed to one side of each 24th side. Screw member 3
4 is a spiral recess 3 having a width slightly larger than the outer diameter of the bar W.
4a, which is arranged in the vertical direction at a position facing the guide member 28, and the spiral convex m34b is the guide member 28.
is in contact with. Further, the screw member 34 is rotatably attached to a support arm 36 fixed to the upper surface of the frame 6 and extending in the L direction via a bearing or the like. A worm wheel 35 is integrally provided at the upper end of the screw member 34.

A rotation shaft 38 extending along the i-direction of the frame 6 is rotatably attached to the upper part of the support arm 36 via a bracket 39. As shown in FIG. 1, the rotating shaft 38 is connected via a timing belt 42 to the output shaft of a drive device, that is, a motor 40, which is fixed to the frame 6.

Further, a worm 44 is fixed to the rotating shaft 38 at a position facing the worm wheel 35, and the worm 44 meshes with the worm wheel 35. Therefore, when the rotating shaft 33 is rotated by the operation of the motor 40, the plurality of screw members 34 are simultaneously rotated.

Next, the operation of the bar replenishment mechanism configured as described above will be explained.

First, a plurality of bars W to be supplied to the lathe 4 are placed on the material shelf 22. Next, after rotating the screw member 34 by a predetermined angle, one bar W is manually dropped into the spiral recess 34a, and by repeating this operation, the plurality of bars W are spirally shaped. are lined up at a predetermined pitch on the four parts 34a. In this state, the plurality of screw members 34 are rotated by the operation of the motor 40, so that the bar material W is sequentially lowered along the recess 34a, and the shutter 13 is opened when the bar material W falls, so that the guide rail 12 fall inside. In this case, since the guide member 28 is in contact with the spiral convex portion 34b of the screw member 34, the bar W does not come off from the screw member 34.
It is securely held within the four parts 34a. The bar W guided into the guide rail 12 is then fed to the lathe 4 by the above-described operation of the feed arrow 14.

In addition, in the above-mentioned embodiment, an example was shown in which the material shelf and the screw member were installed almost perpendicularly to the frame to significantly reduce the planar installation space of the bar feeder, but the present invention The screw member is not limited to this, and the screw member can be installed in various directions as long as it is above or below the frame. When screw members, etc. are installed diagonally above the frame, the bar supply mechanism protrudes slightly in the width direction with respect to the bar feeder, compared to the above-mentioned embodiment, making it easier to install the bar feeder. Although the reduction in space is smaller, a guide member for preventing the bar from coming off can be omitted.

Further, when the outer diameters of the rods differ, this can be easily accommodated by using screw members with different widths of spiral recesses.

(Effect of the invention).

As described in detail above, according to the present invention, the material shelf and screw member for replenishing the bar stock feeder with bars can be installed above the frame, and therefore the plane occupied by the bar stock feeder equipped with the bar stock supply mechanism This has the effect of reducing the amount of space required.

[Brief explanation of the drawing]

FIG. 1 is a front view of a bar feeder equipped with a bar replenishment mechanism according to the present invention, and FIG. 2 is a sectional view of the bar replenishment mechanism taken along line A--A in FIG. 2... Bar feeder 4... Lathe (processing machine) 6... Frame 12... Guide rail (guide member) 22... Material shelf 30... Bar stock supply mechanism 34... Screw member 34a...Four parts 40...Motor (drive device) W...Bar material.

Claims (1)

[Claims] A material shelf disposed above a frame provided with a guide member for supplying bars to be supplied to the processing machine, on which the bars are placed, and a material shelf between the material shelf and the guide member, A bar supply mechanism in a bar supply machine, comprising: a plurality of screw members extending upwardly or downwardly, each having a spiral recess with which the material engages; and a drive device that rotationally drives the screw members. .