JPS60171915A - Intermittent conveying device with variable pitch - Google Patents

Abstract

PURPOSE:To vary conveying distance rapidly and easily by providing an introducing member slidably in the longitudinal direction on a slider and adjusting the stroke of said slider by means of an adjustably retractable stopper in the captioned device for electronic parts, etc. CONSTITUTION:A gripper 3 is lowered and, while an object being conveyed is pressed by a conveying claw 2, a slider 7 is moved to the right. At the right end, the gripper 3 is elevated leaving the object, while the slider 7 returns to left. The rightward movement of the slider 7 is carried out by pulling an introducing member 11 rightward through a motor, a cam 17, and a connecting rod 14, and, as the slider 7 is pressed by springs 10, 10', the introducing member 11 is pushed against the right end of a sliding groove 7a of the slider 7. Then the slider 7 is moved leftward following the introducing member which is moved leftward due to the following rotation of the cam 17. The slider 7 is restrained by a stopper 26. Therefore, the conveying distance can be easily varied by varying the position of the stopper 16.

Description

[Detailed description of the invention] related.

Intermittent conveyance devices are generally used to convey small parts such as electronic parts to the next process one after another. With conventional equipment, the transport distance is always constant, so if you want to flow several types of parts with even slightly different dimensions on the same line, prepare transport equipment for only the types of parts, and The conveying device must be replaced depending on the type of equipment. This is not only due to the equipment cost of arranging as many transport devices as the number of types of parts, but also when the types of parts are frequently changed, there is considerable loss due to the work of replacing transport devices.

An object of the present invention is to provide a relatively inexpensive intermittent conveyance device that can easily and quickly change the conveyance distance, and can also easily automate changing the conveyance distance by combining with other control devices. It is about making it possible.

Embodiments of the present invention will be described with reference to FIGS. 1, 2, and 3.

A gripper 3 having a conveying pawl 2 for conveying an object 1 to be conveyed and a plate 5 are fixed to guide bars 4, 4' and assembled to a slider 7 so as to be slidable in the vertical direction. In order to keep the plate 5 in constant contact with the cam floor 23, a spring 6,
6' is inserted into the guide bars 4, 4' and inserted between the plate 5 and the slider 7. The slider 7 is fitted into a guide bar 8.8' fixed to a frame 9, which is a support, and is held slidably in the longitudinal direction of conveyance. Springs io and io' are fitted into guide bars 8 and 8' and are sandwiched between slider 7 and frame 9, which is a support, and push slider 7.

A sliding groove 7a is formed in the slider 7 in the longitudinal direction, and a slider 11 is attached to the sliding groove 7a so as to be slidable in the longitudinal direction. The idler 11 is connected to the side surface of a rotating cam 17 via a pin 12, a joint 13, a connecting rod 14, a hinge 15, and a pin 16 that constitute a crank that is a conveyance drive unit. The cam 17 is rotatably held in a housing 19 and driven multiple rotations by a transport drive motor 18.

A lever 21 that transmits the movement of the cam surface 17a of the cam 17 to the plate 5 is swingably attached to the stand 25 via a pin 24. The plate 5, which is pressed by the springs 6 and 6', is connected to the cam floor 23, the lever 21, and the cam floor 2.
2) A collar 26 which limits the stroke of the slider 7 to the movement of the cam surface 17a of the cam 17 via the guide pusher 27 fixed to the frame 9, which is a support, is slidably held in the longitudinal direction. ing.

The stopper 26 is internally threaded and coupled to a feed screw 28. The feed screw 28 is a bearing 31.31'
It is rotatably held in the housing 29 via the stopper, and is rotationally driven by a stopper feeding motor 30. The housing 29 is fixed to a frame 9 that is a support.

A stay 33 that supports a conveyance force id 32 that guides an object 1 to be conveyed, a frame 9 that is a support, a stay 20 that supports a stand 25 and a cam 17 are fixed to a base 34.

To outline the conveying operation, as shown in FIG. 2, when the slider 7 is at the left end of its stroke, the gripper 3 descends, and the slider 7 moves to the right while pushing the object to be conveyed with the conveying pawls 2. At the right end of the stroke, the gripper 3 moves up, leaving the object 1 behind, and the slider 7 returns to the left. Transported object 1
is conveyed from left to right by the moving distance of the slider 7.

The gripper 3 is raised and lowered so that the plate 5 follows the cam surface 17aK of the cam 17.

In the forward movement of the slider 7 to the right in FIG. This is done by pulling it to the right. Since the slider 7 is pressed by the springs 10 and 10', the idler 11 is pressed against the right end of the sliding groove 7a of the slider 7.

The return path of the slider 7's movement to the left in FIG. 11. When the rotation of the cam 17 further progresses and the slider 7 collides with the stopper 26, the slider 7 stops being pressed against the stopper 26 by the spring 10, 10', and only the idler 11 moves against the slider 7 as the cam 17 rotates. slides in the sliding groove 7a.

The longitudinal position of the stopper 26 can be determined by rotating the feed screw 28 using a stopper feed motor 30, which is a pulse motor, for example.

In short, the conveyance distance is made variable by changing the starting position of the return end pick conveyance of the slider 7 using the stopper 26.

In the illustrated embodiment, the springs io and io' are interposed between the slider 7 and the frame 9, but the function of the springs 10 and 10' is to prevent the relative positions of the slider 7 and the slider 11 from moving unnecessarily. In particular, when the pawl slider 7 is not pressed against the S) Y bar 26, the swinger 11 is pressed against its sliding end. Therefore, even if a spring is inserted between the slider 11 and the slider 7 so as to press the slider 11 against its sliding end, the effect remains the same.

Since the stopper that determines the conveyance pitch of the slider 7 is connected to the feed screw 28, it is possible to control the stopper position by using a pulse motor or the like as the motor (9). It is also easy to control the conveyance pitch from the control device.

As described above, the present invention has the advantage that the transport distance can be easily changed with a relatively simple structure, and that the change of the transport distance can be easily controlled from another control device.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a variable pitch intermittent conveyance device according to the present invention, Fig. 2 is a front view with the conveyance guide etc. omitted, and Fig. 3 is a partial sectional view mainly taken along the line A-A in Fig. 2. I'll go. 3... Clipper°, 7... Nurider, 9... Frame, 10, 10'... Spring, 11... Floater, 26... Nutopper. 28--Feed screw, 35, 36...Pushy-1
37...pin, 38...spring.

Claims (1)

[Claims] (1) It has grits that are held slidably in the vertical direction on a slider that is held in a longitudinally slidable manner on a support;
In an intermittent conveyance device in which the slider is driven left and right in the longitudinal direction by the conveyance drive i, and the gripper is driven up and down in synchronization with the movement of the slider, the slider is held by the slider so as to be slidable in the longitudinal direction, and the conveyance drive unit is connected to the swinger, a spring is sandwiched between the slider and the support or between the slider and the swinger, and a stopper that limits the stroke of the slider is connected to the feed screw held by the support. A variable pitch intermittent conveyance device characterized in that: