JPH0577122U - Reversing device for cylindrical work - Google Patents

Abstract

(57) [Abstract] [Purpose] To make it possible to automatically reverse a reverse-positioned work by using the driving force of a conveyor for transferring the work. [Structure] When a work (1) having a reverse posture with the end having the recessed portion (4) facing forward is fed by a conveyor (5),
The tip of the reversing needle (14) of the hook (13) enters the recessed portion (4) and is caught on the edge of the recessed portion (4), and the hook is fed forward by the conveyor (5). While swinging to
After (1) is raised upwards and rotated by about 90 ° or more, the work (1) is further moved by its own weight by about 90 °.
It can be rotated by ° to ensure that it is turned over on the conveyor.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an apparatus for automatically reversing a plurality of workpieces having a cylindrical shape and having a recessed portion on one end surface, while conveying the workpieces in a traveling direction by a conveyor, while automatically reversing the workpieces facing in the opposite direction.

[0002]

[Prior Art]

 The valve adjuster used for the valve mechanism of an internal combustion engine is manufactured through multiple automated processes, and in order to automatically process an intermediate product (hereinafter referred to as a workpiece) that has a nearly uniform shape in the next process, there are many It is necessary to feed the work to the machine tool in a certain direction. As a conventional device that automatically reverses the work sent in the opposite direction to the normal direction, it can detect the work sent in the opposite direction as a conventional device. Some devices include a means and a drive means such as a motor that reverses the work in the reverse posture based on its operation.

[0003]

[Problems to be solved by the device]

 According to the conventional device as described above, in addition to the transfer device for transferring the work, a driving means for reversing such as a motor is required, resulting in high cost and stopping the operation of the transfer device when reversing the work. There are problems such as what to do.

In view of the above-mentioned problems of the conventional technology, the present invention utilizes a driving force of a conveyor for conveying a work to automatically reverse an inverted work. It is an object of the present invention to provide a simple cylindrical work piece inverting device.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the columnar work reversing device of the present invention holds each work vertically on the center line of the conveyor on both sides of a conveyor that conveys a columnar work having a recess on one end surface. One or more L-shaped hooks that are provided with a pair of side plates, and a reversing needle that points to the recessed part of the work is bent at the lower end at a proper position in the center between both side plates and above the entire length of the work above the conveyor. It is characterized in that the upper end of is supported by a horizontal axis orthogonal to the conveyor.

[0006]

[Action]

 When a work is sent from the conveyor in a normal posture with the end with the recessed part facing backwards, push up the tip of the hook reversing needle with the end of the work without the recessed part, When the work is in a normal position, passes under the hook, and the work is conveyed by the conveyor in the reverse position with the end with the recessed part in the front, the tip of the hook reversing needle is recessed. After entering the insertion part and hooked on the line of the recessed part, the conveyor feeds the work piece while pulling the work piece forward and upward while the hook swings forward and upward, and after it has been rotated about 90 ° or more. Is rotated about 90 ° further by itself and is reliably inverted on the conveyor.

[0007]

【Example】

 1 to 4 show an embodiment of the present invention. In this embodiment, the work (1) is a plunger formed by coaxially welding a cylindrical body (3) to the base end of the pivot part (2) of the valve adjuster, and the work (1) having a substantially cylindrical shape ( A concave portion (4) is formed at the end of the cylindrical body (3) side of 1).

(5) is a roller chain conveyor, the chain (6) of which is hung around the sprockets (7) (see FIG. 4) at both ends to put the work (1) on the front side, that is, in FIG. Turn to the right.

The conveyor (5) is covered from below by a U-shaped groove plate (8), and the work (1) is chained above the forward chain (6) on the inner surfaces of both side plates (9). A guide plate (10) located at the center of 6) is attached.

A pair of support plates (11) facing each other is erected on the outer surface of the both side plates (9) at a position higher than the chain (6) at the upper end thereof over the entire length of the work (1). , A horizontal pivot (12) is installed which is orthogonal to the chain (6).

An upper end of an L-shaped hook (13) is pivotally provided at the center of the pivot shaft (12), and a reverse posture work which is placed on a chain (6) and is sent to the lower end of the hook (13). A reversing needle (14) facing the rear, which points toward the center of the recessed portion (4) on the front end face of (1), is bent.

A second reversing device (16) and a third reversing device (16) similar to the first reversing device (15) composed of the support plate (11), the pivot (12), the hook (13) and the reversing needle (14). As shown in FIG. 2, the reversing device (17) is installed in order from the rear at appropriate points on both side plates (9) with an appropriate gap between them.

In the above-mentioned device, as shown in FIG. 1, the work (1) in the reverse posture with the recessed part (4) facing forward approaches below the first reversing device (15). Then, the reversing needle (14) enters the recessed portion (4) of the work (1) and is caught on the edge of the recessed portion (4).

As shown in FIG. 3, as the chain (6) runs forward, the hook (13) swings forward and upward, and the work (1) moves the tip of the pivot part (2). At the fulcrum, gradually incline forward and upward.

When the work (1) tilts by 90 ° or more, the recessed part (4) is separated from the reversing needle (14), the work (1) is reversed on the chain (6), and the pivot part (2) is moved. The front of the hook (13) returns to the standby position shown in FIG. 1 due to its own weight.

Although not shown in the drawings, the work (1) oriented in the normal direction with the pivot part (2) at the front is simply swung the hook (13) slightly to the upper right, and the first reversing device (15). ).

Normally, only the first reversing device (15) can reverse the work (1) in the reverse posture with the recessed portion (4) forward, but two works (1) in the reverse posture are close to each other. Then, when approaching the first reversing device (15), only the preceding work (1) is reversed by the first reversing device (15), while the following work (1) is not reversed and remains as it is. It may pass through.

In such a case, by providing the second and third reversing devices (16) and (17), the unreversed reverse posture work (1) is surely reversed by either of them, and the normal Can be turned.

The above-described embodiment is a case where the present invention is applied to the manufacturing process of the valve adjuster, but the present invention requires that the cylindrical work having the recessed portion at one end be oriented and fed. Can be applied in all cases.

[0020]

[Effect of the device]

 According to the present invention, the following effects can be achieved. (a) Since the work force of the conveyor for conveying the work is used to reverse the work in the reverse posture, it is not necessary to provide a dedicated drive means for reversing the work, and the equipment cost can be reduced. (b) It is not necessary to stop the operation of the conveyor at the time of reversing the work, and since the work can be reversed while being conveyed, there is no time loss. (c) It can be implemented simply by adding a simple structure in which a hook is hung above the conveyor, which is practically convenient.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a main part showing a situation before starting work reversal according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a partially cutaway side view of an essential part showing a situation during work reversal in the above embodiment.

FIG. 4 is a side view schematically showing the appearance of a conveyor equipped with the device of the present invention.

[Explanation of symbols] (1) Work (valve adjuster)
(2) Pivot part (3) Cylindrical body
(4) Recessed part (5) Chain conveyor (conveyor)
(6) Chain (7) Sprocket
(8) U-shaped groove plate (9) Side plate (1
0) Guide plate (11) Support plate (1
2) Axis (13) Hook (1
4) Reversing needle (15) First reversing device (1
6) Second reversing device (17) Third reversing device

Claims (1)

[Scope of utility model registration request] 1. A pair of side plates for holding each work vertically on the center line of the conveyor is provided on both sides of a conveyor for conveying a cylindrical work having a recessed portion on one end surface, and the center between both side plates and the conveyor are provided. The upper end of one or more L-shaped hooks, in which a reversing needle that points to the recessed part of the work is bent at the lower end at a proper position above the entire length of the work above, is pivotally supported by a horizontal axis orthogonal to the conveyor. A columnar work reversing device.