CN219368705U

CN219368705U - Multi-position screw height detection mechanism

Info

Publication number: CN219368705U
Application number: CN202223598926.4U
Authority: CN
Inventors: 张波; 于凯; 郑俭; 高华; 孙倩
Original assignee: Wuxi Novo Automation Technology Corp Ltd
Current assignee: Wuxi Novo Automation Technology Corp Ltd
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-07-18
Anticipated expiration: 2032-12-31

Abstract

The utility model relates to the technical field of screw locking quality inspection, in particular to a multi-position screw height detection mechanism, which comprises a rack, wherein a mounting frame capable of moving up and down right above a product to be detected is arranged on the rack, a plurality of height measurement sensors are arranged on the mounting frame, measurement probes of the height measurement sensors extend downwards and correspond to the positions of the screws on the product to be detected one by one, a positioning plate capable of floating up and down is arranged below the mounting frame, a datum plane supporting block for contacting the surface of the product to be detected is arranged on the positioning plate corresponding to each measurement probe, a core shaft pin capable of floating up and down is arranged in the datum plane supporting block in a penetrating manner, the lower end face of the core shaft pin is an acting face contacting the head end of the screw, and the upper end face of the core shaft pin is a measurement face contacting the measurement probes of the height measurement sensors, so that the upward movement quantity of each measurement probe is fed back to obtain the height value of the corresponding screw. The mechanism realizes the measurement of the multi-position screw, has simple structure, low cost and high detection efficiency.

Description

Multi-position screw height detection mechanism

Technical Field

The utility model relates to the technical field of quality inspection of locking screws, in particular to a multi-position screw height detection mechanism.

Background

In the process of product assembly, most of the components are required to be assembled and fixed by using screws, and in order to improve the production efficiency and reduce the labor cost, at present, automatic equipment is often used for screw locking, especially on small products which are not easy to assemble.

When the quality of the screw locking condition is checked, besides checking whether the phenomenon of missing locking or multiple locking occurs, checking whether the condition of insufficient locking or excessive locking exists is also performed, so that the problem of later assembly is avoided. In this regard, at present, a manual inspection mode is adopted, so that the inspection is very easy to miss and fatigue, and particularly, when the batch products are inspected, the inspection is carried out one by one through tools, so that the efficiency is too low; there are also methods for detecting highly abnormal screws using instruments such as infrared sensing, but such methods are too costly.

Disclosure of Invention

Based on the above problems, the utility model aims to provide a multi-position screw height detection mechanism, which can detect the screw locking condition of a plurality of positions on one surface of a product, ensure the reliability of detection results, reduce the operation difficulty and improve the detection efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a multiposition screw height detection mechanism, which comprises a frame, be provided with the mounting bracket that can go up and down to remove directly over the product that awaits measuring in the frame, be provided with a plurality of height measurement sensor on the mounting bracket, each height measurement sensor's measuring probe stretches out downwards, and with each lock screw position one-to-one on the product that awaits measuring, the below of mounting bracket is provided with the locating plate that can float from top to bottom, correspond each measuring probe on the locating plate and be provided with the reference surface butt piece that is used for with the product surface contact that awaits measuring, wear to be equipped with the core axle pin that can float from top to bottom in the reference surface butt piece, the lower terminal surface of core axle pin is the action face with the contact of screw head end, the up end is the measuring surface with height measurement sensor's measuring probe contact, thereby the altitude value of corresponding screw is obtained by the upward movement volume feedback of each measuring probe.

Particularly, the limiting rod is arranged on the datum plane abutting block, penetrates into the core shaft pin, limits the downstroke of the core shaft pin, and enables the acting surface of the core shaft pin to be flush with the lower end surface of the datum plane abutting block in a normal state.

In particular, the upper surface of the reference surface abutting block is provided with a taper hole for guiding the measuring probe.

In particular, the locating plate is provided with a through hole corresponding to each measuring probe, and the reference surface butting block is fixed on the lower surface of the locating plate.

Particularly, the mounting frame is provided with guide pins in a penetrating way, the guide pins are fixedly connected with the positioning plate, and buffer springs positioned between the mounting frame and the positioning plate are sleeved on the guide pins.

Particularly, a driving cylinder which is arranged downwards is arranged on the frame, and the mounting frame is fixedly connected with an output rod of the driving cylinder.

In particular, the screw requires a height tolerance of 3mm±0.1mm to be set.

In summary, the multi-position screw height detection mechanism has the beneficial effects that the reference surface propping block and the core shaft pin are contacted with the screw, so that the measuring probe of the height measuring sensor is driven to generate displacement, the height of the screw can be accurately measured, multi-position measurement can be realized, the structure is simple, the cost is low, the detection efficiency is high, and the measuring precision and the service life are ensured because the measuring probe is not in direct contact with the screw of a product.

Drawings

FIG. 1 is a structural exploded view of a multi-position screw height detection mechanism provided by an embodiment of the present utility model;

FIG. 2 is a schematic diagram showing the cooperation of a height measuring sensor with a reference surface abutment and a mandrel pin in a multi-position screw height detecting mechanism according to an embodiment of the present utility model;

fig. 3 is a schematic contact diagram of a measuring probe of a height measuring sensor and a mandrel pin in a multi-position screw height detecting mechanism according to an embodiment of the present utility model.

In the figure:

1-a frame; 2-driving a cylinder; 3-mounting rack; 4-a height measurement sensor; 5-measuring probe; 6, positioning a plate; 7-a guide pin; 8-a buffer spring; 9, abutting the reference surface; 10-passing holes; 11-core pin; 12-taper holes; 13-limit rod.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar parts throughout, or parts having like or similar functions. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be interpreted broadly, as for example, they may be fixedly connected, or may be detachably connected, or may be electrically connected, or may be directly connected, or may be indirectly connected through an intermediary, or may be in communication with one another in two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

Referring to fig. 1 to 3, the present preferred embodiment provides a multi-position screw height detecting mechanism, which includes a frame 1, a driving cylinder 2 disposed downward is disposed on the frame 1, and an output rod of the driving cylinder 2 is fixedly connected with a mounting frame 3, so that the mounting frame 3 can move up and down right above a product to be detected.

The mounting frame 3 is provided with a plurality of height measuring sensors 4, and measuring probes 5 of the height measuring sensors 4 extend downwards and correspond to the screw locking positions of the products to be measured one by one, so that when the mounting frame 3 descends, a plurality of screws are measured simultaneously.

Further, a positioning plate 6 capable of floating up and down is arranged below the mounting frame 3, specifically, a guide pin 7 is arranged on the mounting frame 3 in a penetrating manner, the guide pin 7 is fixedly connected with the positioning plate 6, and a buffer spring 8 positioned between the mounting frame 3 and the positioning plate 6 is sleeved on the guide pin 7.

The positioning plate 6 is provided with a reference surface abutting block 9 for contacting with the surface of the product to be measured corresponding to each measuring probe 5, in particular, the positioning plate 6 is provided with a through hole 10 corresponding to each measuring probe 5, and the reference surface abutting block 9 is fixed on the lower surface of the positioning plate 6.

The core shaft pin 11 capable of floating up and down is penetrated in the reference surface propping block 9, and the conical hole 12 for guiding the measuring probe 5 is formed on the upper surface of the reference surface propping block 9, so that the measuring probe 5 can be accurately propped against the core shaft pin 11. Further, a limiting rod 13 is arranged on the reference surface abutting block 9, the limiting rod 13 penetrates into the mandrel pin 11 to limit the lower stroke of the mandrel pin 11, so that the acting surface of the mandrel pin 11 is flush with the lower end surface of the reference surface abutting block 9 in a normal state.

The lower end face of the core shaft pin 11 is an action face contacting with the screw head end, and the upper end face is a measurement face contacting with the height measurement sensor 4, so that the height value of the corresponding screw is obtained by the upward movement feedback of each measurement probe 5.

Wherein, locating plate 6 makes the datum plane support piece 9 with product surface flexible contact, avoids the hard contact damage, and dabber round pin 11 has avoided measuring probe 5 and screw head direct contact, has guaranteed measuring probe 5's precision, has prolonged life.

Specifically, after the product is screwed down, the required height tolerance is set to be 3mm plus or minus 0.1mm, in the measuring process, the driving cylinder 2 drives the mounting frame 3 and the positioning plate 6 to descend until the datum plane abutting block 9 contacts the surface of the product, at the moment, the positioning plate 6 is wholly moved up a little distance to form certain buffer and maintain certain tightening pressure, at the moment, the acting surface of the core shaft pin 11 contacts with the screw head end, the measuring surface of the core shaft pin 11 contacts with the measuring probe 5 of the height measuring sensor 4, and the measuring probe 5 moves upwards due to the height of the screw protrusion; if the value of the upward movement of the measuring probe 5 is within the range of 3mm plus or minus 0.1mm, the product detection result is OK, otherwise, the product detection result is NG.

In conclusion, the multi-position screw height detection mechanism is in contact with the screw through the reference surface abutting block and the core shaft pin, and further drives the measuring probe of the height measuring sensor to displace, so that the height of the screw can be accurately measured, multi-position measurement can be realized, the structure is simple, the cost is low, the detection efficiency is high, and the measuring accuracy and the service life are guaranteed because the measuring probe is not in direct contact with the product screw.

The above embodiments merely illustrate the basic principles and features of the present utility model, and the present utility model is not limited to the above embodiments, but can be variously changed and modified without departing from the spirit and scope of the present utility model, which is within the scope of the present utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a multiposition screw height detection mechanism, its characterized in that, includes the frame, be provided with the mounting bracket that can go up and down to remove directly over the product that awaits measuring in the frame, be provided with a plurality of height measurement sensor on the mounting bracket, each height measurement sensor's measuring probe stretches out downwards to with each lock screw position one-to-one on the product that awaits measuring, the below of mounting bracket is provided with the locating plate that can reciprocate, correspond each measuring probe on the locating plate and be provided with the reference surface butt piece that is used for with the product surface contact that awaits measuring, wear to be equipped with the dabber round pin that can reciprocate in the reference surface butt piece, the lower terminal surface of dabber round pin is the action surface with screw head end contact, the up end be the measuring surface with height measurement sensor's measuring probe contact to obtain the altitude value of corresponding screw by the upward displacement feed back of each measuring probe.

2. The multi-position screw height detection mechanism according to claim 1, wherein the reference surface abutment is provided with a limiting rod, the limiting rod penetrates into the core pin, and limits the downstroke of the core pin, so that the acting surface of the core pin is flush with the lower end surface of the reference surface abutment in a normal state.

3. The multi-position screw height detection mechanism according to claim 1, wherein the upper surface of the reference surface abutment is provided with a taper hole for guiding the measuring probe.

4. The multi-position screw height detection mechanism according to claim 1, wherein the positioning plate is provided with a through hole corresponding to each measuring probe, and the reference surface abutment block is fixed on the lower surface of the positioning plate.

5. The multi-position screw height detection mechanism according to claim 1, wherein the mounting frame is provided with a guide pin in a penetrating manner, the guide pin is fixedly connected with the positioning plate, and the guide pin is sleeved with a buffer spring between the mounting frame and the positioning plate.

6. The multi-position screw height detection mechanism according to claim 1, wherein the frame is provided with a driving cylinder arranged downwards, and the mounting frame is fixedly connected with an output rod of the driving cylinder.

7. The multi-position screw height detection mechanism according to claim 1, wherein the screw demand height tolerance is set to 3mm ± 0.1mm.