JPS6176227A - Chucking device of electronic parts - Google Patents

Abstract

PURPOSE:To correctly hold an electronic part further perform its centering, by binding each press holding pawl by a coil spring ring and synchronizing the whole device to be opened and closed by the displacement of the coil spring ring in its extension and contraction. CONSTITUTION:In a chucking device of electronic parts, each press holding pawl 3a-3d has a protrusion part 31a, 31b engaging with the upper of an opening edge of a receiving part 1 forming an almost recessed section and a protrusion pat 32a, 32b pivotally engaging with an operating shaft 2 vertically movably inserted to be arranged in the center part of the receiving port. While each press holding pawl 3a-3d, whose point end side is protruded, is arranged around the operating shaft 2 in the receiving part 1. Further a coil spring ring 4, engaging with a side of each press holding pawl 3a-3d positioned in the receiving part 1, binds each press holding pawl 3a-3d to be supported to the operating shaft 2. Accordingly, the displacement of the coil spring ring 4 moves the point end side of each press holding pawl 3a-3d to be opened and closed about the protrusion part 32a, 32b, pivotally engaging with the operating shaft 2, serving as the supporting point in accordance with a vertical movement of the operating shaft 2.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an automatic mounting device for electronic components (electronic components at 6) and a gripping device for electronic components that performs a predetermined operation by clamping the electronic components with a plurality of clamping claws. It is something.

BACKGROUND TECHNOLOGY In general, in automatic chimp parts mounting machines, etc., in order to perform center linking, direction rotation, etc. of chimp parts, the tip side is applied to the chimp parts from all four directions, for example, four
An electronic component gripping device is provided in which wooden clamping claws work together to clamp the chip component.

Conventionally, this gripping device for electronic components has been configured such that the intermediate side is pivoted to the machine body such as a direction turning device with a pin, and the clamping claws are arranged at 90° intervals σ, and the clamping claws are arranged inward at one end side from the pivot position of each pin. By forming a part of a gear on the side and meshing between opposing clamping claws, and further tensioning a tension spring between these opposing parts, the tip side of the winter melon can be moved as the directional turning device moves up and down. They are usually installed so that they open and close in synchronization.

Problems to be Solved by the Invention However, this electronic component gripping device is not only mechanically extremely complex and requires a great deal of effort for maintenance, but also requires at least the opposing clamping claws to be moved in synchronization with each other. Even if it is possible to do so, it is difficult to move the clamping claws in accurate synchronization with the other pair of clamping claws, resulting in problems with centering, direction turning, etc.

Means for Solving the Problems In the electronic component gripping device according to the present invention, a protrusion that engages on the open edge of a receptacle having a generally concave cross section and a protrusion that is vertically movably inserted into the center of the receptacle. It has a plurality of clamping claws each having a protrusion that pivotably engages with the disposed operating shaft, and each of the clamping claws has its tip side protruding so that the clamping claws are arranged around the axis of the operating shaft within the socket. A protrusion that engages a coil hane ring on the side of each clamping claw located at the top of the screen to collectively support the plurality of clamping claws on the operating shaft, and pivots into engagement with the operating shaft as the operating shaft moves up and down. The distal end side of each clamping claw can be opened and closed by deflection of the coil spring ring using the part as a fulcrum.

Function: In this electronic component gripping device, each clamping claw is positioned around the operating shaft and placed inside a concave socket, and the clamping claws are tied together with a coil harness that engages with each side of the clamping claw. It can be constructed with a simple structure for support, and since each clamping claw can be easily removed by removing the coil spring ring, maintenance can be performed without much effort. In addition, each clamping claw is terminated with a coil spring ring, so for example 4. Even when electronic parts are clamped with the clamping claws of T, all can be opened and closed in synchronization by the expansion/contraction deflection of the coil spring ring.

The following five embodiments will be described with reference to the accompanying drawings.

Referring to FIGS. 1 to 6, this electronic component gripping device is equipped with a socket 1 having a generally concave cross section, through which an operating shaft 2 that can move up and down is inserted through the center thereof, and at 90° intervals around IklI. It is constructed by arranging a total of four clamping claws 3a to 3d for each. The socket part l has a perfect circular shape in plan view, and guide plate parts 11a to 11d integrally molded in a rib shape with a constant width are provided at four locations on the inner periphery thereof. Each guide plate portion 11a-1id guides the operating shaft 2 that moves up and down, and each notch 22a-22d of a lower flange 21 formed to extend laterally from the axis of the operating shaft 2 fits into each guide plate portion 11a-1id. . In addition to the lower flange 21, the actuating shaft 2 includes an upper flange 23 formed by overhanging and having a relatively small diameter at a distance from the lower flange 21.
have. The upper opening 23 is each notch 22a of the lower collar 21.
Notches 24a to 24d are formed at the same positions as 22d to receive and support respective clamping claws 3a to 3d, which will be described later. Each of the clamping claws 3a to 3d has a side surface bent in a substantially dogleg shape so as to be able to clamp electronic components together at the tip side, and from the outer side thereof to the open edge of the socket part 1. The protrusion 31a that engages with the protrusion 31a.

31b (hereinafter, only a pair facing each other is shown) are integrally formed with protrusions 32a and 32b that engage with the lower side of the upper flange 23 that protrudes from the inner side of the actuating shaft 2. The latter protrusions 32a and 32b correspond to each clamping claw 3d.
~3d serves as a fulcrum when opening and closing, and the lower surface of the upper flange 23, where its tip touches, is tilted at a relatively large angle of 10 to 15 degrees.
Pivot engagement is achieved by forming an inclined surface of a certain degree. Each of these clamping claws 3a to 3d has a protrusion 31 on the outer side.
In the case of the illustrated embodiment, place a and 31b on the guide plates hIla and Ilb of the socket BBl, and engage the protrusions 32a and 32b on the inner side with the upper flange 23 of the operating shaft 2, and then By fitting into the notches 24a and 21b of the flange 23, the tip side is made to protrude and the inner number of the socket 1 is positioned.
It has recesses 33a and 33b which are formed by punching out the outer side of the socket 1 from 1a and 31b into an arc shape (51), and the perfectly circular coil hane rings 4 are fitted into these recesses 33a and 33b, respectively. As a result, the clamping claws 3a to 3d are ultimately supported around 11:b of the operating shaft 2.

In this electronic component gripping device, with reference to FIGS. 1 and 7, when the operating shaft 2 is retreated until the lower flange 21 comes into contact with the inner bottom surface of the socket 1, the protrusions 31a of the winter melons 3a to 3d, 3
1b engages with the open raising of the socket part 1, and the projection part 32a
, by pulling the coil spring ring 4 in the expansion direction using the pivot engagement point between 32b and the upper collar 23 as a fulcrum,
The tips of the winter melons 3a to 3d are in a closed state where they are close to each other. When the actuating shaft 2 moves to protrude from the socket 1 from this state, the clamping claws 3a to 3d supported around the axis of the actuating shaft 2 also move, and the protrusions 31a and 31b of the winter melons 3a to 3d move. is now released from the forced suppression that it had been subjected to at the open edge of the socket part 1. At this time, the coil spring ring 4, which had been in an extended state until now, is contracted and deflected, and the projections 32a, 32 are engaged with the upper collar 23 by the elastic force.
Using b as a support, the clamping claws 3a to 3d are expanded in synchronization, and the electronic components are clamped by the clamping claws 3a during the expansion operation.
3d, and as the operating shaft 2 descends, the open edge of the socket 1 and the clamping claw 3a, which are located at a slightly higher position due to spring deflection as will be described later,
When the protrusions 31a and 31b of 3d are engaged, each clamping claw 3a to 3d closes and clamps the electronic component.

This electronic component gripping device can be incorporated as a direction turning device 60 for setting the mounting direction of the chip component sucked by the electronic component mounting pad 50 with respect to the printed circuit board, as shown in FIG. 8.9. In this directional turning device 60, the socket 1 is integrally molded above an inner tube 62 which is fitted and supported by an outer tube 61, and the operating shaft 2 is inserted and disposed within the diameter of the inner tube 62. The inner tube 62 is supported by a compression spring 63 interposed between the inner tube 62 and the outer tube 61 so as to be able to move upwardly so as to move slightly upward as the operating shaft 2 moves upward. Further, the operating shaft 2 is tensilely deflected downward by a compression spring 66 disposed between a collar 64 attached to the lower end of the shaft and a collar 65 on the outer v61, and is integrally attached to the collar 64 against the spring 66. plate part 6
7 is mounted so that it can be moved upward by moving it upward using a drive cam or the like. When the plate portion 67 integrally attached to the collar 64 is pushed upward, the directional rotating device 60 moves the operating shaft 2 upward, and rotates the winter melons 3a to 3d.
The protrusions 31a and 31b detach from the socket 1 and expand as the coil spring ring 4 contracts, thereby receiving the chip component being sucked by the mounting head 50. As the operating shaft 2 moves upward, the inner tube 62 also rises to a certain position due to the expansion of the compression spring 63.

When a chip component is received between the tips of the clamping claws 3a to 3d, the operating shaft 2 is lowered by the descent of the plate portion 67, and each clamping claw 3
When the protrusions 31a and 31b of a to 3d come into contact with the open edge of the socket part 1 located at a slightly higher position by the compression spring 63, each clamping claw 3a to 3d pulls the coil spring ring 4 and clamps the chip component. It works like this. When a chip component is clamped by each clamping claw 3a to 3d,
By rotating the entire assembly including the outer tube 61 at an appropriate angle using a motor or the like, it becomes possible to orient the chip component and at the same time center the chip component.

In addition, in the above-mentioned embodiment, explanation was given based on the case where it is incorporated as a direction turning device 60 separate from the mounting head 50.
This gripping device for electronic parts is weird to wear! It can also be applied when inquiries can be made at the same time as ・.

Effects of the Invention As described above, by opening and closing the electronic component gripping device according to the present invention, electronic components can be accurately held and centered.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a gripping device for electronic components according to the present invention, FIG. 2 is a plan view of the device, FIG. 3 is a side view showing clamping claws constituting the device, and FIG. 4 is the same. 5 is a plan view of the operating shaft, FIG. 6 is a perspective view of a coil spring ring that constitutes the device, FIG. 7 is an explanatory diagram of the operation of the device, and FIG. 9 are explanatory diagrams when the same device is incorporated as a direction turning device for electronic components. 1. Socket part, 2: Operating shaft, 3a to 3d: Clamping claw, 31a
, 31b: Protrusion on the outer side, 32a, 32b: Protrusion on the inner side, 4: Coil spring ring. Figure 1 Figure 2 Figure 3 Figure 7

Claims (1)

[Claims] It has a plurality of clamping claws each having a protrusion that engages on the open edge of a socket having a generally concave cross-section and a protrusion that pivotably engages with an operating shaft inserted through the center of the socket so as to be movable up and down. , the clamping claws are arranged around the operating shaft within the socket with their respective tips protruding, and a plurality of coil spring rings are engaged with the sides of each clamping claw positioned within the socket. The clamping claws are bundled and supported on the operating shaft, and as the operating shaft moves up and down, the tip side of each clamping claw can be opened and closed using the protrusion that pivots and engages with the operating shaft as a fulcrum by deflection of the coil spring ring. A gripping device for an electronic component, characterized in that it is configured as follows.