CN214732675U

CN214732675U - Riveting screw adsorption mechanism

Info

Publication number: CN214732675U
Application number: CN202120661948.7U
Authority: CN
Inventors: 金浩
Original assignee: Chongqing Fengchuan Electronic Technology Co ltd
Current assignee: Chongqing Fengchuan Electronic Technology Co ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-11-16
Anticipated expiration: 2031-03-31

Abstract

The utility model belongs to the technical field of vacuum adsorption, in particular to a riveting screw adsorption mechanism, which comprises a suction head, vacuum equipment and a connecting pipe, wherein the lower surface of the suction head is provided with a lug which can extend into a center hole of the head of a screw; the left side and the right side of the lower surface of the suction head are both provided with concave cavities which can be opposite to the heads of the screws, and the two concave cavities are respectively positioned on the left side and the right side of the convex blocks; one end of the connecting pipe is communicated with the concave cavity, and the other end of the connecting pipe is communicated with the vacuum equipment. The suction head of the scheme is provided with the convex block, the convex block has a positioning effect on the suction head, and the concave cavity of the suction head can be ensured to be over against the head of the screw, so that the suction head can effectively adsorb the screw.

Description

Riveting screw adsorption mechanism

Technical Field

The utility model belongs to the technical field of vacuum adsorption, concretely relates to riveting screw adsorption apparatus constructs.

Background

The inner structure of the keyboard mainly comprises a control circuit board, keys, a bottom plate, a panel and the like. The bottom plate is usually made of a metal sheet through stamping, die pressing and other processes, the keys are mounted on the bottom plate through connecting pieces, and the bottom plate is fixedly connected on a panel below the bottom plate through threads. Since the bottom plate has a very thin thickness, several screws must be fixed on the bottom plate to facilitate the connection with the panel. The screw needs to be conveyed in the process of processing the keyboard base plate, and because the size of the screw for connecting the base plate and the panel is extremely small, the screw is adsorbed and fed by using the existing adsorption mechanism, so that the screw is difficult to adsorb.

SUMMERY OF THE UTILITY MODEL

The utility model provides a riveting screw adsorption apparatus constructs to solve the problem that the screw of small-size is difficult to adsorbed the transport.

In order to achieve the above purpose, the utility model discloses a scheme does: the riveting screw adsorption mechanism comprises a suction head, vacuum equipment and a connecting pipe, wherein a convex block capable of extending into a central hole of the head of a screw is arranged on the lower surface of the suction head; the left side and the right side of the lower surface of the suction head are both provided with concave cavities which can be opposite to the heads of the screws, and the two concave cavities are respectively positioned on the left side and the right side of the convex blocks; one end of the connecting pipe is communicated with the concave cavity, and the other end of the connecting pipe is communicated with the vacuum equipment.

The working principle and the beneficial effects of the scheme are as follows: when the screw needs to be adsorbed, the convex block is firstly extended into the central hole of the head part of the screw, and the concave cavity is opposite to the two sides of the head part of the screw. And operating the vacuum equipment to form negative pressure in the cavity, so that the screw can be stably adsorbed on the suction head. The suction head of the scheme is provided with the convex block, the convex block has a positioning effect on the suction head, and the concave cavity of the suction head can be ensured to be over against the head of the screw, so that the suction head can effectively adsorb the screw.

Optionally, the vacuum device is a vacuum generator. The vacuum generator is a high-efficiency, clean, economic and small vacuum component, and is suitable for the scheme.

Optionally, the lower surface of the bump is an arc surface. So set up, the lug can be better stretches into in the centre bore of screw head.

Optionally, the upper parts of the two cavities are communicated; one connecting pipe is arranged. By the arrangement, the two cavities can generate negative pressure simultaneously through one connecting pipe, and the structure is simplified.

Optionally, a cavity is formed in the bump, and an expansion film communicated with the cavity is arranged on the bump; a runner and a slideway communicated with the cavity are arranged in the suction head, and one end of the slideway is communicated with the runner; a wedge block is connected in the slideway in a sliding manner, and a first elastic piece for enabling the wedge block to extend into the runner is arranged on the slideway; one end of the flow channel is communicated with one of the concave cavities, and the other end of the flow channel is communicated with the outside; a sliding block opposite to the inclined plane of the wedge block is connected in the flow channel in a sliding manner, and a second elastic part for resetting the sliding block is arranged in the flow channel; when negative pressure exists in the cavity, the sliding block can move to one side of the wedge block under the action of the second elastic piece. After the lug stretches into the centre bore of screw head, vacuum apparatus makes the cavity form the negative pressure, under the effect of pressure difference, the slider can overcome the effect of second elastic component and remove to cavity one side, the slider contacts with the inclined plane of voussoir gradually, the slider exerts the effort to the voussoir and makes the voussoir move to cavity one side along the slide, because the extrusion of voussoir, the pressure increase in the cavity this moment, the inflation membrane inflation grow gradually, the inflation membrane after the inflation supports tightly on the inner wall of screw centre bore, the lug can inwards press from both sides tight screw through the inflation membrane, can effectively avoid making the screw drop because suction is not enough at the in-process of carrying the screw.

Optionally, a limiting block for limiting the movement range of the sliding block is arranged in the flow channel, and when the sliding block moves to the limiting position, the sliding block is just pressed above the wedge block. Set up the motion range that the stopper can effectively restrict the slider, ensure that the motion of slider accords with the requirement of this scheme.

Optionally, the expansion film is provided in two pieces, and the two expansion films are respectively located on the left and right sides of the bump. By the arrangement, the two expansion films can better clamp the screw through the central hole after being expanded.

Optionally, the first elastic member is a compression spring and the second elastic member is a tension spring.

Drawings

FIG. 1 is a sectional view of the suction head of the present invention in a front view;

fig. 2 is an enlarged view of a portion a in fig. 1.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the suction head comprises a suction head 10, a cavity 11, a flow channel 20, a slide block 21, a second elastic piece 22, a slide way 30, a wedge 31, a first elastic piece 32, a connecting pipe 40, a cavity 41, an expansion film 42 and a limiting block 50.

This embodiment is substantially as shown in fig. 1-2: riveting screw adsorption apparatus constructs including suction head 10, vacuum apparatus and a connecting pipe 40, and the lower surface welding of suction head 10 has the lug that can stretch into the screw head centre bore, and the lower surface of lug sets up to the arcwall face. The lower surface of the suction head 10 is configured to fit the head of the screw to be sucked, in this embodiment, the screw to be sucked is a flat head screw, so the lower surface of the suction head 10 is a plane. The left side and the right side of the suction head 10 are both provided with concave cavities 11 which can be opposite to the heads of the screws, the two concave cavities 11 are respectively positioned on the left side and the right side of the convex block, and the upper parts of the two concave cavities 11 are communicated. One end of the connection pipe 40 communicates with the cavity 11, and the other end of the connection pipe 40 communicates with a vacuum apparatus, which is a vacuum generator in this embodiment.

The convex block is internally provided with a cavity 41, an expansion film 42 communicated with the cavity 41 is adhered on the convex block, and when the cavity 41 is filled with gas, the expansion film 42 can expand. The suction head 10 is internally provided with an L-shaped flow channel 20 and a slide way 30 communicated with the cavity 41, the flow channel 20 is positioned above the slide way 30, and the upper end of the slide way 30 is communicated with the flow channel 20. A wedge 31 is slidably and hermetically connected in the slide 30, a first elastic element 32 is disposed in the slide 30, in this embodiment, the first elastic element 32 is a compression spring, one end of the compression spring is connected to the inner wall of the slide 30, the other end of the compression spring is connected to the wedge 31, and under the action of the compression spring, the upper end of the wedge 31 extends into the flow channel 20. One end of the flow passage 20 communicates with one of the cavities 11, the other end of the flow passage 20 communicates with the outside, and a slider 21 opposite to the inclined surface of the wedge 31 is slidably and sealingly connected in the flow passage 20. A second elastic part 22 is arranged in the flow channel 20, the second elastic part 22 is a tension spring, one end of the tension spring is connected to the inner wall of the flow channel 20, and the other end of the tension spring is connected to the slide block 21. When negative pressure is present in the cavity 41, the slide 21 is able to move towards the wedge 31 against the action of the second resilient element 22. A limiting block 50 for limiting the movement amplitude of the slide block 21 is welded in the flow channel 20, and when the slide block 21 moves to the limiting position, the slide block 21 is just pressed above the wedge block 31.

When the screw needs to be adsorbed, the convex block is firstly extended into the central hole of the head of the screw, and the concave cavity 11 is opposite to the two sides of the head of the screw. The vacuum device is operated to create a negative pressure in the cavity 11, and the screw is more stably attached to the suction head 10. Meanwhile, because negative pressure is formed in the cavity 11, under the action of pressure difference, the slide block 21 can overcome the action of the second elastic piece 22 and move towards one side of the cavity 11, the slide block 21 is gradually contacted with the inclined surface of the wedge block 31, the slide block 21 exerts acting force on the wedge block 31 to enable the wedge block 31 to move towards one side of the cavity 41 along the slide way 30, due to extrusion of the wedge block 31, the pressure in the cavity 41 is increased, the expansion film 42 is gradually expanded and enlarged, the expanded expansion film 42 is abutted against the inner wall of the screw center hole, the screw can be clamped inwards by the convex block through the expansion film 42, and the screw can be effectively prevented from falling due to insufficient suction in the screw conveying process.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be pointed out that to those skilled in the art, without departing from the structure of the present invention, a plurality of modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the utility of the present invention.

Claims

1. Riveting screw adsorption apparatus constructs, its characterized in that: comprises a suction head, vacuum equipment and a connecting pipe, wherein the lower surface of the suction head is provided with a convex block which can extend into a central hole of the head of a screw; the left side and the right side of the lower surface of the suction head are both provided with concave cavities which can be opposite to the heads of the screws, and the two concave cavities are respectively positioned on the left side and the right side of the convex blocks; one end of the connecting pipe is communicated with the concave cavity, and the other end of the connecting pipe is communicated with the vacuum equipment.

2. The rivet screw adsorption mechanism of claim 1, characterized in that: the vacuum device is a vacuum generator.

3. The rivet screw adsorption mechanism of claim 2, characterized in that: the lower surface of the convex block is an arc surface.

4. The rivet screw adsorption mechanism of claim 3, characterized in that: the upper parts of the two concave cavities are communicated; one connecting pipe is arranged.

5. The rivet screw adsorption mechanism of any one of claims 1-4, wherein: a cavity is arranged in the convex block, and an expansion film communicated with the cavity is arranged on the convex block; a runner and a slideway communicated with the cavity are arranged in the suction head, and one end of the slideway is communicated with the runner; a wedge block is connected in the slideway in a sliding manner, and a first elastic piece for enabling the wedge block to extend into the runner is arranged on the slideway; one end of the flow channel is communicated with one of the concave cavities, and the other end of the flow channel is communicated with the outside; a sliding block opposite to the inclined plane of the wedge block is connected in the flow channel in a sliding manner, and a second elastic part for resetting the sliding block is arranged in the flow channel; when negative pressure exists in the cavity, the sliding block can move to one side of the wedge block under the action of the second elastic piece.

6. The rivet screw adsorption mechanism of claim 5, characterized in that: a limiting block used for limiting the movement amplitude of the sliding block is arranged in the flow channel, and when the sliding block moves to the limiting position, the sliding block is just pressed above the wedge block.

7. The rivet screw adsorption mechanism of claim 6, characterized in that: the two expansion films are respectively positioned at the left side and the right side of the lug.

8. The rivet screw adsorption mechanism of claim 7, characterized in that: the first elastic piece is a compression spring, and the second elastic piece is a tension spring.