JPH0692440A - Escapement device - Google Patents

Abstract

PURPOSE:To realize the sure and high speed transport with the simple constitution by installing a transport body which elastically holds and reciprocation- transport a work in a guide passage for connecting the discharge port of one work transport passage and the feeding port of the other work transport passage and opening a holding part against the springy force by the driving force of the shiftable body at each connection part, and permitting the receiving/delivery of the work to each work transport passage. CONSTITUTION:A pair of holding hooks 22a and 22b having projection parts 20a and 20b on the outside parts having different phase are installed in shiftable manner in a transport direction on a shiftable body 10 supported in reciprocation shiftable manner on a guide passage 14 for connecting the discharge port of one work transport passage and the feeding port of the other work transport passage, and a work W1 is elastically held by the holding hooks, and the holding hooks are opened at each connection position against the springy force by the contact between an opening means installed at each connection part on the guide passage and the projection part of each holding hook by the shift of the shiftable body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an escapement device, and in particular, when a single work is separated from one work transfer path and transferred to the other work transfer path, a discharge port of these work transfer paths is used. A transfer body that elastically grips a work is provided on a guide path that connects to the supply port of the other work transfer path so as to reciprocate, and the gripping portion is made elastic by the driving force of the transfer body at each of the connection portions. The present invention relates to an escapement device that is opened by being opened and is capable of delivering a work to each work transfer path.

[0002]

2. Description of the Related Art Conventionally, an escapement device as a transfer means has a space for accommodating one work when individually transferring a single work separated from one transfer path to the other transfer path. A method of carrying by storing and holding in a storage case and reciprocatingly moving the respective transport paths has been adopted.

[0003]

However, in this type of escapement device, the escapement device is often used at a high speed in order to increase the tact time, and when it is conveyed at such a high speed, it is stored in the case. Since the work to be performed is formed in a shape that causes rattling with respect to the case, there is a problem that the reliability of the transportation is lost due to the problem of falling out due to inertia etc. at the time of starting and stopping during transportation. Was there.

Therefore, an object of the present invention is to provide a transfer body for elastically gripping and reciprocating a work on a guide path connecting the discharge port of the work transfer path and the supply port of the other work transfer path. In each of the connection parts, the driving force of the transfer body opens the gripping part against the elastic force to allow the work to be delivered to each work transfer path, thereby ensuring a simple structure and reliable transfer at high speed. An object is to provide an escapement device that can be achieved and at the same time can shorten the machine tact.

[0005]

In order to achieve the above object, in an escapement device for separating a single work from one work transfer path and transferring it to the other work transfer path, the escapement device comprises: A work guide path that connects the discharge port of the one work transfer path and the supply port of the other work transfer path, and a transfer unit that reciprocates between the respective connecting portions of the work guide path guided by the work guide path. The transfer means is provided on the work guide path so as to be reciprocally movable by a drive source, and has a gripper that is movable in the work transfer direction so as to elastically grip the work. It is characterized in that the body is constituted by an opening means for opening the gripping portion against an elastic force by a driving force for moving the transfer body at each of the connecting portions.

In this case, the transfer means is provided with protrusions at different phases on the outer side of the pair of gripping claws for pressing and gripping the work by the elastic acting force in the transfer direction. An abutting portion is provided on each connecting portion at a position where it can come into contact with each of the protruding portions, and the transfer body moves to each connecting portion of the guide path so that the protruding portion and the abutting portion of the grip claw come into contact with each other. At this time, it is preferable that the gripping claw is opened against the elastic force by the driving force of the transfer body.

[0007]

According to the escapement device of the present invention,
When separating a single work from one work transfer path and transferring it to the other work transfer path, the work is elastically moved to a guide path that connects the discharge port of these work transfer paths and the supply port of the other work transfer path. A transfer body for holding and reciprocating is provided, and the work is delivered to each work transfer path by opening the gripping portion against the elastic force by the driving force of the transfer body at each of the connection portions. As a result, since the work can be conveyed at high speed and reliably with a simple structure, the machine tact can be shortened.

[0008]

An embodiment of the escapement device according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is an overall perspective view of a transfer body showing a state where positioning is stopped at a supply port of a work transfer path, FIG. 2 is a plan view of a transfer means, and FIG. 3A is an explanatory view of a work gripping state in the transfer body. , (B) are enlarged views of the grip claws, and (c) is an enlarged cross-sectional view showing another embodiment of the grip claws. First, in FIG. 1, reference numeral 10 indicates a transfer body, and the transfer body 10 is reciprocally moved by a drive unit between connection portions of one work transfer path discharge port and the other work transfer path supply port, which will be described later. It is supported on the guideway.

That is, the transfer body 10 includes a base 16 supported by a rodless pneumatic cylinder 12 as a drive source so as to be capable of reciprocating on a guide path 14, and a pair of linear guides 18a provided on the base 16. A pair of gripping claws 22a and 22b, which are slidably supported in the transfer direction on the outer surface 18b and have projecting portions 20a and 20b formed on the outer side portions thereof and are arranged opposite to each other, and the gripping claws 22a and 22b.
Brackets 24a and 24b respectively disposed on the base 16 at the rear of 2b, and rods 28a and 2b provided with flanges 26a and 26b at one end at the rear of the grip claws 22a and 22b.
8b is fixed and the flange side is inserted and locked to the brackets 24a and 24b.
a, 24b and compression springs 30a, 30b as elastic bodies inserted through the rods 28a, 28b between the gripping claws 22a, 22b.

Then, the transfer body 10 thus constructed
And the opening means 34a and 34b constitute a transfer means.

That is, in FIG. 2, reference numeral 34a,
Reference numeral 34b denotes opening means, and these opening means 34a, 34
b is arranged on both sides of the guide path 14 on the base 32 in different phases so as to face the protrusions 20b, 20a of the grip claws 22a, 22b when the transfer body 10 is at each connection. Stands 36a and 36b and these stands 36
The work guide path 14 is provided on the tops of the a and 36b so as to face the protrusions 20a and 20b of the pair of grip claws 22a and 22b.
And the stays 38b and 38a protruding toward the side
Each of the adjusting screws 40 is affixed to a and 38b so as to be adjustable in the longitudinal direction.

The escapement device constructed as described above operates as follows. That is, in the state shown in FIG. 3A, the transfer body 10 moves on the guide path 14 while holding the work W ₁ discharged from the discharge port of the work transfer path (not shown) in the previous step, Work transfer path 42 (Fig. 1
(Refer to FIG. 1) shows a state in which positioning is stopped at the connection portion of the supply port.
Immediately before coming into contact with, the tip of the adjusting screw 40 of the opening means 34a comes into contact with the protrusion 20b on one side of the holding claw 22b.

Due to this abutment, the gripping claw 22b on one side is prevented from moving by the transfer body 10 against the compression spring 30b, but the transfer body 10 reaches the contact position of the stopper 44 (see FIG. 3). Since it moves, it slightly separates from the one grip claw 22a. Thereby, the pair of grip claws 22
The work W ₁ which has been elastically gripped by a and 22b is opened by this pawl, and is guided by the discharge means (not shown) to the guide path 14.
It is discharged by a horizontal pushing operation to a supply port of the work transfer path 42 arranged in a direction orthogonal to the direction.

As described above, when the discharge of the work W ₁ is completed, the transfer body 10 travels on the guide path 14 and is positioned in contact with the connection portion of the work discharge port (not shown) in the previous step.
At this position as well, just before the transfer body 10 abuts on the stopper with a damper (not shown), the one gripping claw 22a is attached to the protruding portion 20a of the adjusting screw 40 as the opening means 34b.
The tip of the gripping claw 22a is brought into contact with the other gripping claw 22b.
To be released away from. The robot hand gripping the workpiece W ₁ is discharged from the previous process immediately above a pair of opened gripping claws (not shown) is positioned, the workpiece W ₁ by the lowering operation of the robot hand is the work W ₁ bottom Gripping claws 22a, 22b for more protruding flanged pins
It is supported in a state of being inserted therein [see (b) of FIG. 3].

When the transfer body 10 starts to run, the gripping pawls 22a and 22b, which have been open until now, are brought into contact with the tip of the adjusting screw 40 of the opening means 34b as shown in FIG.
Is closed by the action of the compression springs 30a and 30b, and the work W
Pin ₁ is elastically gripped. The conveying member 10 gripping the workpiece W _1, (see Figure 2) work conveying path 42 of travel again next step on the guide path 14 stops positioned in the connection portion of the supply port, the workpiece W ₁ in this position, above As described above, the gripping claw 22b is separated from the gripping claw 22a by the contact between the protrusion 20b of the one gripping claw 22b and the opening means 34a, and the gripping claw 22b is released from each other to be in a free state, so that the discharging means is operated. It is transferred to the supply port of the work transfer path 42 via.

The opening amount of the gripping claws at each stop position of the guide path differs depending on the attachment / detachment direction or the structure of the conveying means for delivering the work to the pair of gripping claws. It can be appropriately set by adjusting the adjusting screw 40 of the means 34a, 34b in the longitudinal direction.

Further, the gripping claw 10 described above is used for the work W ₁
Explained the configuration corresponding to the work W ₁ having the flanged pin on the bottom of the base, but in the case where the work bottom does not have the flanged pin, as shown in FIG. The concave portion 18 corresponding to the outer shape of the workpiece
It is preferable that the gripping claws 46a and 46b are formed by forming a and 48b to grip both outer side surfaces of the work W ₂ . Therefore, if the gripping claws are appropriately formed according to the shape of the work, even if the type of the work is changed, it can be easily dealt with by exchanging the gripping claws prepared in advance.

In this way, the transfer work is reliably gripped by the pair of gripping claws, so that the transfer work can be carried out at high speed.

[0019]

As is apparent from the above-described embodiments, according to the escapement device of the present invention, the escapement device is provided with the discharge port of the one work transfer path and the supply port of the other work transfer path. And the work guide path that connects
The transfer means is configured to be reciprocally moved between the respective connection portions of the work guide path by being guided by the work guide path to reciprocate. By comprising a transfer body having a gripping part for gripping the work and an opening means for opening the gripping part against the elastic force by the driving force for moving the transfer body at each of the connecting parts. The work can be reliably gripped and transported with a simple configuration, and since high-speed transport is possible, the machine tact can be shortened.

Further, even if the shape of the work is changed, it is possible to easily cope with the change by exchanging the gripping claws on the upper portion of the transfer body. Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and it is needless to say that various design changes can be made without departing from the spirit of the present invention.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a transfer body showing an embodiment of an escapement device of the present invention and showing a state in which positioning is stopped at a supply port of a work transfer path.

FIG. 2 is a plan view of a conveying unit.

FIG. 3A is an explanatory diagram of a work gripping state in a transfer body, and FIG. 3B is an enlarged view of gripping claws;
(C) is an enlarged sectional view showing another embodiment of the grip claw.

[Explanation of symbols]

 10 Transport Body 12 Rodless Pneumatic Cylinder 14 Guideway 16 Base 18a, 18b Linear Guide 20a, 20b Projection 22a, 22b Grip Claw 24a, 24b Bracket 26a, 26b Flange 28a, 28b Rod 30a, 30b Compression Spring 32 Base 34a, 34b Opening means 36a, 36b Stands 38a, 38b Stay 40 Adjustment screw 42 Work transfer path 44 Stopper with damper 46a, 46b Grasping claws 48a, 48b Recess

Claims (2)

[Claims] 1. An escapement device that separates a single work from one work transfer path and transfers it to the other work transfer path, wherein the escapement device includes a discharge port of the one work transfer path and a discharge port of the other work transfer path. The work guide path is connected to the supply port of the work transfer path, and the transfer means is configured to move back and forth while being guided by the work guide path between the respective connection portions of the work guide path. A transfer body provided on the guide path so as to be reciprocally movable by a drive source and provided with a gripper that is movable in the work transfer direction so as to elastically grip the work, and the transfer body moves the transfer body at each of the connection portions. An escapement device, comprising: an opening device that opens the gripping portion against the elastic force by a driving force. 2. The transfer means is provided with protrusions at different phases on the outer sides of a pair of gripping claws for pressing and gripping the work by elastic force in the transfer direction, and each of the guide paths is provided. When the contact portion is provided in the connection portion at a position where it can come into contact with each of the protrusions, and the transfer body moves to each of the connection portions of the guide path and the protrusion of the grip claw and the contact portion come into contact with each other. The escapement device according to claim 1, wherein the gripping claw is opened against the elastic force by the driving force of the transfer body.