Printed circuit board substrate positioning assembly

Abstract

The utility model discloses a printed circuit board substrate positioning assembly, which comprises a substrate positioning seat, a negative pressure connecting disc and an air exhaust connecting cylinder, a connecting section of the air exhaust connecting cylinder is provided with a soft pipeline, one end of the soft pipeline is provided with a threaded connection interface, and the threaded connection interface is connected with a threaded port of the negative pressure connecting disc. A piston pulling rod is arranged in the air exhaust connecting cylinder, a plurality of hole sites are formed in a rod arm of the piston pulling rod, and limiting pins are arranged in the hole sites. According to the utility model, the negative pressure connecting disc is arranged at the internal circular hole of the notch of the base plate, the air exhaust connecting cylinder is assembled at the bottom of one side of the positioning seat of the base plate, the connecting section of the air exhaust connecting cylinder is provided with the soft pipeline, and the soft pipeline is connected with the threaded port of the negative pressure connecting disc through the threaded connecting interface; the movement of the piston pulling rod is utilized to enable the adsorption part of the negative pressure connecting disc to generate negative pressure, so that the negative pressure adsorption effect is realized, the circuit board substrate can be firmly positioned, and the stability is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of printed circuit board substrate positioning assemblies, belong to printed circuit board production technical field. BACKGROUND

[0002] Circuit board needs to be positioned by circuit board positioning tool for detection or maintenance operation in the process of detection or maintenance, and the prior art such as patent No. CN202320039121.1 discloses a circuit board positioning tool, which belongs to the technical field of circuit board tooling. The circuit board positioning tool includes a positioning platform, a recess is provided on the top of the positioning platform, a plurality of blind holes are formed in the recess, a positioning member is further provided on the positioning platform, the positioning member includes a telescopic clamp and an electromagnet, the telescopic clamp is arranged inside the blind hole, one end of the telescopic clamp is fixedly connected with the inner wall bottom of the blind hole, the electromagnet is arranged inside the positioning platform and located directly below the telescopic clamp, a switch is provided on one side of the positioning platform, the switch is electrically connected with the electromagnet, after the circuit board is placed on the telescopic rod, the telescopic rod in contact with the circuit board sinks, the other telescopic rods that have not sunk limit the position of the circuit board, realizing the positioning of the circuit board. Compared with the prior art, the circuit board of different shapes can be positioned without developing new positioning tools for special-shaped circuit boards, achieving the effect of strong universality.

[0003] The positioning tool disclosed above has poor positioning accuracy and firmness in actual use, which causes damage to the circuit board during maintenance. Therefore, we designed a printed circuit board substrate positioning assembly. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a kind of printed circuit board substrate positioning assembly to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of printed circuit board substrate positioning assembly, including substrate positioning seat, negative pressure connecting disc and suction connection cylinder, the top of the substrate positioning seat is provided with substrate recess, the inner hole of the substrate recess is installed with negative pressure connecting disc, the suction connection cylinder is assembled at the bottom of one side of substrate positioning seat, the connecting section of the suction connection cylinder is provided with soft pipeline, one end of the soft pipeline is provided with threaded connection interface, the threaded connection interface is connected with the thread port of negative pressure connecting disc, the inside of the suction connection cylinder is provided with piston pull rod, a plurality of hole positions are provided at the arm of the piston pull rod, the inside of the hole position is provided with limit pin.

[0006] In the printed circuit board substrate positioning assembly, sliding bar openings are formed on the side of the top end of the substrate positioning seat, and a movable connecting block is arranged in the sliding bar openings.

[0007] In the printed circuit board substrate positioning assembly, a screw hole is formed on one end of the limiting connecting strip, and a tension adjusting column is screwed into the screw hole, a rubber pressing disc is arranged at the bottom end of the tension adjusting column, and a silica gel gasket is arranged at the bottom end of the rubber pressing disc.

[0008] In the printed circuit board substrate positioning assembly, a positioning installation groove is arranged at the bottom end of the substrate positioning seat, and a positioning perforation is arranged at each of the four corners of the top end of the substrate positioning seat.

[0009] In the printed circuit board substrate positioning assembly, a pushing block is arranged on one side of the top end of the limiting connecting strip.

[0010] In the printed circuit board substrate positioning assembly, the sliding distance of the limiting connecting strip along the substrate positioning seat is greater than two-thirds of the width of the substrate positioning seat.

[0011] Compared with the prior art, the printed circuit board substrate positioning assembly has the following beneficial effects:

[0012] 1. The printed circuit board substrate positioning assembly is characterized in that a negative pressure connecting disc is arranged in the inner hole of the substrate recess, an air extraction connecting cylinder is arranged at the bottom of one side of the substrate positioning seat, a connecting section of the air extraction connecting cylinder is provided with a soft pipeline, the soft pipeline is connected with the threaded opening of the negative pressure connecting disc through a threaded connection interface, the movement of the piston pulling rod generates negative pressure in the adsorption part of the negative pressure connecting disc, the negative pressure adsorption effect is realized, the circuit board substrate can be firmly positioned, the stability is ensured, and the limiting connecting strip, the tension adjusting column and the rubber pressing disc are arranged to effectively limit the upper part of the circuit board substrate and prevent the circuit board substrate from being deviated during the processing. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a structural schematic view of the printed circuit board substrate positioning assembly.

[0014] Fig. 2 It is a structural schematic view of the limiting connecting strip of the printed circuit board substrate positioning assembly.

[0015] Fig. 3 It is a three-dimensional structural schematic view of the air extraction connecting cylinder of the printed circuit board substrate positioning assembly.

[0016] In the figure: 1, base plate positioning seat; 2, base plate notch; 3, negative pressure connecting disc; 4, air extraction connecting cylinder; 5, limit pin; 6, piston pull rod; 7, positioning installation groove; 8, limit connecting strip; 9, tightness adjusting column; 10, rubber pressure plate; 11, positioning perforation; 12, moving connecting block; 13, silica gel gasket; 14, push block; 15, soft pipeline; 16, threaded connecting interface. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0018] Please refer to Figs. 1-3 The utility model provides a kind of technical scheme of printed circuit board base plate positioning assembly:

[0019] Embodiment one: positioning assembly includes base plate positioning seat 1, negative pressure connecting disc 3 and air extraction connecting cylinder 4, the top of base plate positioning seat 1 is equipped with base plate notch 2, the inside round hole of base plate notch 2 is installed with negative pressure connecting disc 3, air extraction connecting cylinder 4 is assembled in the bottom of one side of base plate positioning seat 1, the connecting section of air extraction connecting cylinder 4 is provided with soft pipeline 15, one end of soft pipeline 15 is provided with threaded connecting interface 16, threaded connecting interface 16 is connected with the thread port of negative pressure connecting disc 3, the inside of air extraction connecting cylinder 4 is provided with piston pull rod 6, the arm of piston pull rod 6 is provided with multiple hole positions, the inside of hole position is provided with limit pin 5.

[0020] On the basis of embodiment one, in order to limit the circuit board base plate located in the inside of base plate notch 2 from above, ensure firmness and prevent deviation phenomenon during processing, the side of the top of base plate positioning seat 1 is equipped with sliding bar mouth, the inside of sliding bar mouth is installed with moving connecting block 12, the top of moving connecting block 12 is provided with limit connecting strip 8;The threaded hole at one end of limit connecting strip 8 is screw-mounted with tightness adjusting column 9, the bottom of tightness adjusting column 9 is provided with rubber pressure plate 10, the bottom of rubber pressure plate 10 is provided with silica gel gasket 13;The side of the top of limit connecting strip 8 is provided with push block 14.

[0021] Among them, in order to cope with different sizes of circuit board base plate, the sliding distance of limit connecting strip 8 along base plate positioning seat 1 is greater than two-thirds of the width of base plate positioning seat 1.

[0022] On the basis of embodiment one, in order to better install the substrate positioning seat 1 at the platform of the positioning guide machining equipment, the bottom end of the substrate positioning seat 1 is provided with a positioning installation groove 7, and the four corners of the top end of the substrate positioning seat 1 are provided with positioning through holes 11.

[0023] Working principle: the substrate to be processed is placed inside the substrate recess 2 of the substrate positioning seat 1, the suction part of the negative pressure connecting disc 3 generates negative pressure by using the movement of the piston pull rod 6, the piston pull rod 6 is placed in the limit pin 5 of the arm hole position, effective limiting is performed to prevent the piston pull rod 6 from resetting, the rubber pressure plate 10 is adjusted to correspond to the substrate by adjusting the limit link 8, the rubber pressure plate 10 is adjusted to press and limit the substrate by adjusting the tension adjusting column 9, the circuit board substrate is prevented from producing deviation in the process, the present scheme has good positioning and limiting effect, ensures the positioning accuracy and firmness of the substrate, and reduces the damage phenomenon of the circuit board in the maintenance process.

[0024] The contents not described in detail in the specification belong to the prior art known by the person skilled in the art. The specific embodiments described in the specification are only illustrative of the spirit of the utility model. The person skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the utility model or exceed the range defined by the appended claims.

Claims

1. A printed circuit board substrate positioning assembly, comprising a substrate positioning seat (1), a negative pressure connecting plate (3), and a vacuum connecting cylinder (4), characterized in that, The substrate positioning seat (1) has a substrate recess (2) at its top. The inner circular hole of the substrate recess (2) is installed with the negative pressure connecting plate (3). The vacuum connecting cylinder (4) is assembled at the bottom of one side of the substrate positioning seat (1). The connecting section of the vacuum connecting cylinder (4) is provided with a soft pipe (15). One end of the soft pipe (15) is provided with a threaded connection interface (16). The threaded connection interface (16) is connected to the threaded opening of the negative pressure connecting plate (3). The vacuum connecting cylinder (4) is provided with a piston pulling rod (6). The piston pulling rod (6) has multiple holes at its arm. The holes are provided with limit pins (5).

2. The printed circuit board substrate positioning assembly according to claim 1, characterized in that: The top side of the substrate positioning seat (1) is provided with a sliding strip opening, and a movable connecting block (12) is installed inside the sliding strip opening. The top of the movable connecting block (12) is provided with a limit connecting strip (8).

3. The printed circuit board substrate positioning assembly according to claim 2, characterized in that: A tension adjustment column (9) is threadedly installed at the screw hole at one end of the limiting connector (8). A rubber pressure plate (10) is provided at the bottom end of the tension adjustment column (9), and a silicone gasket (13) is provided at the bottom end of the rubber pressure plate (10).

4. The printed circuit board substrate positioning assembly according to claim 1, characterized in that: The bottom end of the substrate positioning seat (1) is provided with a positioning mounting groove (7), and the four corners of the top of the substrate positioning seat (1) are provided with positioning through holes (11).

5. A printed circuit board substrate positioning assembly according to claim 2, characterized in that: A push block (14) is provided on one side of the top of the limiting strip (8).

6. A printed circuit board substrate positioning assembly according to claim 2, characterized in that: The sliding distance of the limiting strip (8) along the substrate positioning seat (1) is greater than two-thirds of the width of the substrate positioning seat (1).

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