CN114698360A

CN114698360A - Clamping device for integrated circuit board

Info

Publication number: CN114698360A
Application number: CN202210356925.4A
Authority: CN
Inventors: 胡晓玮
Original assignee: Zibo Vocational Institute
Current assignee: Zibo Vocational Institute
Priority date: 2022-04-01
Filing date: 2022-04-01
Publication date: 2022-07-01

Abstract

The application relates to the technical field of electronic part processing, in particular to a clamping device for an integrated circuit board, which comprises a control device and a clamping part, wherein the clamping part comprises a conveying block and a motor fixedly installed at the top of the conveying block; the top end of the external thread shaft extends out of the moving block and is hinged with the ejector block, and the ejector block is positioned in a hollow sleeve shell on the moving block and can be connected in a sliding manner; the other end of the top block is provided with an induction device; the sleeve shell is connected with the clamping head in a sliding mode through an opening in the top end, and a spring is arranged between the sensing device and the bottom of the clamping head in the sleeve shell. Can realize through this device to integrated circuit board level, stable centre gripping in the vertical direction, be applicable to automated production process, mass production occasion, improve work efficiency.

Description

Clamping device for integrated circuit board

Technical Field

The application relates to the technical field of electronic part processing, in particular to a clamping device for an integrated circuit board.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The integrated circuit board is a carrier for electrically interconnecting electronic components, and as long as the integrated circuit and other electronic components are provided, the integrated circuit board is used for electrically interconnecting the components, and the integration level of various electronic components on the integrated circuit board is high, so that the integrated circuit board is easy to handle and place in the carrying, moving and processing processes, and the electronic components on the integrated circuit board can be damaged in the moving process. Particularly, in the processes of mass production and processing of the integrated circuit board, the fixation of the integrated circuit board during movement is more important, for example, when the integrated circuit board is pasted with electronic components and integrated circuits, the integrated circuit board is required to be accurately positioned and placed, and the integrated circuit board must be required to be fixed or firmly clamped; in the three-proofing paint spraying operation of the integrated circuit board, one side of the integrated circuit board is often sprayed firstly in the prior art, then the other side of the integrated circuit board is sprayed after the integrated circuit board is overturned, the fundamental reason is that the integrated circuit board is moved and clamped by light and light, so that the integrated circuit board is placed or clamped and fixed in the spraying or mounting operation, if the two sides of the integrated circuit board are sprayed or mounted at the same time, the integrated circuit board is not clamped and fixed well, only one side of the integrated circuit board can be fixed, and the other side of the integrated circuit board can be processed and sprayed.

However, the technical scheme has the disadvantages that: firstly, after one side of the integrated circuit board is sprayed or pasted, if the integrated circuit board is overturned, the electronic components which are already pasted at the bottom after overturning are easily damaged, and for spraying, the spraying operation can be carried out on the other side only after the drying operation is carried out on the sprayed side of the integrated circuit board; secondly, the mounting of the electronic components or the spraying of three-proofing paint can be carried out on one side at a time, so that the production efficiency is low; and thirdly, when the integrated circuit board is turned over, the integrated circuit board and electronic components on the integrated circuit board are easily damaged secondarily.

Disclosure of Invention

In view of the above, the present application provides a clamping device for an integrated circuit board.

The technical scheme that this application solved the problem that prior art exists adopted is:

the application provides a clamping device for an integrated circuit board, which comprises a control device and a clamping part, wherein the clamping part comprises a conveying block, a motor is fixedly mounted at the top of the conveying block, an external thread shaft is fixedly connected to the top of a motor shaft of the motor, the external thread shaft is in threaded connection with a moving block through an internal thread hole in the middle of the moving block, and the bottom of the moving block is located in a limiting groove in the top of the conveying block and is in sliding connection with the limiting groove; the top end of the external thread shaft extends out of the moving block and is hinged with one end of the ejector block, and the ejector block is positioned in a hollow sleeve shell vertically and fixedly arranged on the moving block and is connected with the inside of the sleeve shell in a sliding manner; the other end of the top block is fixedly provided with a contact switch which is electrically connected with the control device; a limiting inner ring is integrally formed in an opening at the top end of the sleeve shell, the sleeve shell is connected with a clamping head in a sliding mode through the opening at the top end, and a limiting outer ring is integrally formed at the bottom end of the clamping head, which is positioned in the sleeve shell; a spring is arranged between the contact switch and the bottom of the clamping head in the sleeve shell.

Preferably, the inner wall of the sleeve shell is provided with a fixed limit convex strip parallel to the central line direction of the sleeve shell, and the side edges of the limit outer ring and the top block are provided with limit grooves correspondingly matched with the limit convex strip.

Preferably, the clamping head includes the setting element, setting element one end and sleeve shell sliding connection, the other end and holder fixed connection, the holder front end has a horizontal recess, the fixed mounting has the elasticity centre gripping pad in the horizontal recess, the fixed mounting that lies in horizontal recess horizontal central line direction on the holder has photoelectric switch, photoelectric switch is connected with controlling means electricity.

Preferably, the clamping member comprises an upper clamping member and a lower clamping member which are parallel to each other, and the upper clamping member and the lower clamping member are fixedly connected through a connecting member.

Preferably, the upper clamping piece comprises an upper cover plate, the top of the upper cover plate is provided with a through hole, and the through hole is fixedly connected with the air inlet; the periphery of the bottom of the upper cover plate is fixedly connected with the periphery of an elastic membrane, and a cavity structure is formed between the upper surface inside the membrane and the inner surface of the bottom of the upper cover plate;

the upper cover plate is fixedly connected with a positioning groove plate below the upper cover plate, an inwards concave limiting groove is arranged in the middle of the upper part of the positioning groove plate, a pressure hole penetrating through the limiting groove is arranged in the middle of the bottom of the limiting groove, and two positioning holes penetrating through the limiting groove are arranged on two sides of the pressure hole at the bottom of the limiting groove;

the utility model discloses a diaphragm pressing device, including diaphragm, upper cover plate, pressure bar, locating lever, pressure bar top fixedly connected with clamp plate, the cavity structure that forms between the inside upper surface of diaphragm and the upper cover plate bottom internal surface is located to the clamp plate to can slide from top to bottom in the spacing inslot, the position homogeneous integrated into one piece that the clamp plate lower surface corresponds with two locating holes has the locating lever, two locating levers all overlap outward and are equipped with the supporting spring of one end fixed mounting in the clamp plate bottom, the perpendicular fixed mounting in one end bottom that the pressure bar passed the pressure hole has the holding down plate, holding down plate bottom fixed mounting has the spacer.

Preferably, a sealing gasket is arranged between the upper cover plate and the positioning groove plate.

Preferably, the lower pressing plate is provided with a lower positioning hole at a position corresponding to the two positioning rods.

Preferably, the diameter of the bottom of the supporting spring is larger than that of the positioning hole.

Preferably, the air inlets are connected with electromagnetic valves through air paths, the electromagnetic valves are connected with external compressed air source pipelines, and the electromagnetic valves are electrically connected with the control device.

An integrated circuit board clamping using method of a clamping device for an integrated circuit board is applied to the clamping device for the integrated circuit board and comprises the following steps:

the first step is as follows: the horizontal clamping comprises the following steps:

s0, the photoelectric switch detects the signal of the integrated circuit board and transmits the signal to the control device;

s1, after the control device receives the signal of the photoelectric switch, the control device controls the motor to rotate, and the moving block slides in the limit groove in the direction far away from the motor through the thread transmission; the sleeve device and the clamping head on the moving block move towards the direction of the integrated circuit board;

s2, in the moving process of the clamping head, the bottom of the groove in the middle of the clamping piece contacts the edge of the integrated circuit board;

s3, the motor continues to rotate, the positioning piece slides in the sleeve shell, and the positioning piece cannot rotate because a limiting groove and a limiting convex strip which are matched with each other exist between a limiting outer ring at the bottom of the positioning piece and the inner wall of the sleeve shell, and the groove in the middle of the clamping piece is ensured not to rotate;

s4, the spring is compressed and gives a certain elastic force to the positioning piece, and the clamping piece has a clamping force in the horizontal direction to the integrated circuit board through force transmission;

s5, the spring is further compressed, and the corresponding clamping piece further increases the clamping force of the integrated circuit board in the horizontal direction;

s6, when the spring is compressed to a certain degree, the bottom of the positioning piece in the sleeve shell contacts the contact switch, the contact switch is switched on and transmits the signal to the control device;

and S7, the control device controls the motor to stop rotating, the positioning piece stops sliding relatively in the sleeve shell at the moment, the spring is not compressed any more, the elasticity of the positioning piece given by the spring is the clamping force on the integrated circuit board in the horizontal direction at the moment, and the integrated circuit board is clamped in the horizontal direction.

The second step is that: vertical clamping, comprising the following steps:

n0, after the first step of horizontal clamping is finished, the control device controls the electromagnetic valve to be electrified;

n1, after the electromagnetic valve is electrified, a compressed air source with certain pressure outside enters the air inlet through the electromagnetic valve and a pipeline;

n2 that the cavity between the bottom of the upper cover plate and the upper surface of the elastic membrane is inflated and the volume of the cavity is gradually increased;

n3, increasing the volume of the cavity, applying pressure to the pressure plate, and overcoming the elasticity of the supporting spring to make the pressure plate slowly move towards the concave limiting groove in the middle of the positioning groove plate;

n4, the supporting spring is further compressed, and the deformation quantity of the supporting spring is gradually increased, and the elasticity of the supporting spring is in direct proportion to the deformation quantity, so when the deformation quantity of the supporting spring reaches a certain degree, the elasticity of the supporting spring is equal to the pressure applied to the pressure plate by the external compressed air; at the moment, the supporting spring does not continuously deform, and the pressing plate does not move any more; because the pressing plate is fixedly connected with the lower pressing plate through the pressing rod, the lower pressing plate also displaces in the same direction as the pressing plate at the moment, and the upper clamping piece and the lower clamping piece have the same structure as the upper clamping piece, so that the integrated circuit board is clamped in the vertical direction.

Compared with the prior art, the beneficial effect of this application is:

1. the utility model provides a clamping device for integrated circuit board, through the elasticity control holder of spring to the ascending centre gripping dynamics of integrated circuit board horizontal direction, utilize contact switch to carry on spacingly to feeding of holder on the centre gripping direction simultaneously, guarantee that the ascending centre gripping dynamics of integrated circuit board horizontal direction is stable.

2. In the vertical direction, through the cooperation of the internal spring of upper and lower holder and diaphragm, through the compressed air of giving certain pressure to the air inlet for integrated circuit board also can be stabilized the centre gripping in the vertical direction, can not lead to integrated circuit board because of clamping-force too big to damage or clamping-force undersize leads to the integrated circuit board centre gripping unstability.

3. The clamping device for the integrated circuit board is convenient to use when in use, can completely and automatically realize the positioning clamping of the integrated circuit board and the loosening of the circuit board through the control device, and greatly improves the working efficiency in batch operation procedures.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.

FIG. 1 is a schematic view of the overall structure of a clamping device for an IC board according to the present application,

FIG. 2 is a schematic view of the internal structure of a clamping device for an IC board according to the present application,

figure 3 is a schematic view of the internal structure of the sleeve device in figure 2,

figure 4 is a cross-sectional view of the connection of the retaining outer ring and the cartridge housing of figure 3,

FIG. 5 is a schematic view of a clamping head of the clamping device for IC boards according to the present application,

figure 6 is an exploded view of the internal structure of the upper or lower clamp of the gripping head of figure 5,

figure 7 is an exploded view of the internal structure of figure 6 opposite the upper or lower clamp,

fig. 8 is a schematic view illustrating a usage of the clamping device for an ic board according to the present application.

In the figure:

1. a conveying block, 2, internal threads, 3, a limiting groove, 4, a motor, 5, an external thread shaft, 6, a moving block, 7, a sleeve device, 70, a sleeve shell, 71, a limiting inner ring, 72, a spring, 73, a contact switch, 74, a top block, 75 and a limiting convex strip,

8. a clamping head 80, a positioning piece 81, a clamping piece 82, a clamping pad 83, a photoelectric switch 84, a limit outer ring 85 and a limit groove,

810. an upper clamping piece 811, a connecting piece 812, a lower clamping piece,

9. the device comprises an upper cover plate, 10, a membrane, 11, a pressure plate, 12, a sealing gasket, 13, a positioning groove plate, 14, a lower pressure plate, 15, a spacer, 16, a pressure rod, 17, a pressure hole, 18, a positioning rod, 19, a supporting spring, 20, a positioning hole, 21, a lower positioning hole, 22, a limiting groove, 23, a through hole, 24, a threaded hole, 25, an air inlet, 26, a stepping motor, 27, a guide plate, 28, a screw rod, 29, a clamping part, 30, a fixing block, 31 and a conveying platform.

The specific implementation mode is as follows:

the present application will be further described with reference to the following drawings and examples.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only relational terms determined for convenience in describing structural relationships of the parts or elements of the present disclosure, and do not refer to any parts or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

Fig. 1 to 4 show a preferred embodiment of a clamping device for an integrated circuit board according to the present application, the clamping device includes a control device and a clamping portion 29, the clamping portion 29 includes a conveying block 1, a motor 4 is fixedly mounted on the top of the conveying block 1, an external threaded shaft 5 is fixedly connected to the top of a motor shaft of the motor 4, the external threaded shaft 5 is in threaded connection with a moving block 6 through an internal threaded hole in the middle of the moving block 6, and the bottom of the moving block 6 is located in a limiting groove 3 on the top of the conveying block 1 and is slidably connected with the limiting groove 3; the top end of the external thread shaft 5 extends out of the moving block 6 and is hinged with one end of a top block 74, and the top block 74 is positioned in a hollow sleeve shell 70 vertically and fixedly arranged on the moving block 6 and is connected with the inside of the sleeve shell 70 in a sliding manner; the other end of the top block 74 is fixedly provided with a contact switch 73, and the contact switch 73 is electrically connected with a control device; a limiting inner ring 71 is integrally formed in an opening at the top end of the sleeve shell 70, the sleeve shell 70 is slidably connected with the clamping head 8 through the opening at the top end, and a limiting outer ring 84 is integrally formed at the bottom end of the clamping head 8 positioned in the sleeve shell 70; a spring 72 is disposed in the sleeve housing 70 between the contact switch 73 and the bottom of the gripping head 8.

A fixed limiting convex strip 75 parallel to the central line direction of the sleeve shell 70 is arranged on the inner wall of the sleeve shell 70, and a limiting groove 85 correspondingly matched with the limiting convex strip 75 is arranged on the side edges of the limiting outer ring 84 and the top block 74; fig. 4 shows a cross-sectional view of the sliding connection between the stop collar 84 and the cartridge housing 70, the top piece 74 having the same stop grooves 85 that cooperate with the stop ribs 75.

The clamping head 8 comprises a positioning part 80, one end of the positioning part 80 is slidably connected with the sleeve shell 70, the other end of the positioning part 80 is fixedly connected with a clamping part 81, a transverse groove is formed in the front end of the clamping part 81, an elastic clamping pad 82 is fixedly arranged in the transverse groove, a photoelectric switch 83 is fixedly arranged on the clamping part 81 in the horizontal center line direction of the transverse groove, and the photoelectric switch 83 is electrically connected with a control device; as shown in fig. 5, the clamping member 81 includes an upper clamping member 810 and a lower clamping member 812 parallel to each other, and the upper clamping member 810 and the lower clamping member 812 are fixedly connected by a connecting member 811.

Fig. 6 and 7 are exploded views showing the internal structures of the upper and lower clamping members, wherein the upper clamping member 810 comprises an upper cover plate 9, a through hole is formed in the top of the upper cover plate 9, the through hole is fixedly connected with an air inlet 25, the air inlet 25 is connected with a solenoid valve pipeline through an air passage, the solenoid valve is connected with an external compressed air source pipeline through a pipeline, and the solenoid valve is electrically connected with a control device; the periphery of the bottom of the upper cover plate 9 is fixedly connected with the periphery of an elastic membrane 10, and a cavity structure is formed between the upper surface inside the membrane 10 and the inner surface of the bottom of the upper cover plate 9; the upper cover plate 9 is fixedly connected with a positioning groove plate 13 below, and a sealing gasket 12 is arranged between the upper cover plate 9 and the positioning groove plate 13; the middle of the upper part of the positioning groove plate 13 is provided with an inwards concave limiting groove 22, the middle of the bottom of the limiting groove 22 is provided with a pressure hole 17 penetrating through the limiting groove 22, and two sides of the pressure hole 17 at the bottom of the limiting groove 22 are provided with two positioning holes 20 penetrating through the limiting groove 22; a pressure rod 16 is connected in the pressure hole 17 in a sliding manner, a pressure plate 11 is fixedly connected to the top of the pressure rod 16, the pressure plate 11 is located below a cavity structure formed between the upper surface inside the diaphragm 10 and the inner surface of the bottom of the upper cover plate 9 and can slide up and down in a limiting groove 22, two positioning rods 18 are integrally formed on the lower surface of the pressure plate 11 and at positions corresponding to the two positioning holes 20, a supporting spring 19 with one end fixedly mounted at the bottom of the pressure plate 11 is sleeved outside each of the two positioning rods 18, and the diameter of the bottom of each supporting spring 19 is larger than that of each positioning hole 20; a lower pressure plate 14 is vertically and fixedly installed at the bottom of one end of the pressure rod 16 penetrating through the pressure hole 17, lower positioning holes 21 are respectively arranged on the lower pressure plate 14 at positions corresponding to the two positioning rods 18, and a spacer 15 is fixedly installed at the bottom of the lower pressure plate 14; in the embodiment, the upper cover plate 9, the positioning groove plate 13, the lower pressure plate 14 and the spacer 15 have the same length and width of the bottom except for different thicknesses; wherein the upper cover plate 9 is fixedly connected with the positioning groove plate 13, and the lower pressure plate 14 is fixedly connected with the spacer 15; the spacer 15 serves to vertically limit the positioning rod 18.

The lower clamp 812 is identical in structure to the upper clamp 810.

Fig. 8 is a schematic diagram illustrating a usage of a preferred embodiment of the clamping device for the ic board according to the present application, as shown in the figure, two sets of conveying assemblies are fixedly mounted on the conveying platform 31 of the ic board in parallel, each set of conveying assemblies includes a stepping motor 26 fixedly mounted on the conveying platform 31, and the stepping motor 26 is electrically connected to the control device; a motor shaft of the stepping motor 26 is fixedly connected with one end of a screw 28, and the other end of the screw is hinged with a fixed block 30 which is also fixedly arranged on the other end of a conveying platform 31; the clamping part 29 of the clamping device for the integrated circuit board is in threaded connection with the screw 28 through the internal thread 2 hole located in the middle of the conveying block 1 of the clamping part 29, and the bottom of the conveying block 1 of the clamping part 29 is in sliding connection with the guide plate 27 fixedly installed between two ends of the conveying platform 31.

The application provides a clamping device for integrated circuit board, notes when using leave sufficient clearance between ejecting block 74 and movable block 6 before using, and its specific mode of operation is:

when the external ic board is horizontally conveyed between the two clamping portions 29 in fig. 8, the optoelectronic switch 83 on the clamping portions 29 detects a signal and transmits the signal to the control device electrically connected to the optoelectronic switch 83, and after the control device receives the signal transmitted by the optoelectronic switch 83, the control device controls the motor 4 to rotate, as shown in fig. 2 and 3, after the motor 4 rotates, because the motor shaft of the motor 4 is fixedly connected with the external threaded shaft 5, the external threaded shaft 5 rotates, and because the external threaded shaft 5 is hinged with the top block 74 and is connected with the moving block 6 in a threaded manner, and the bottom of the moving block 6 is slidably connected with the limiting groove 3, when the external threaded shaft 5 rotates, the moving block 6 is driven to move in a direction away from the motor 4, in this case, because the sleeve device 7 is fixedly connected with the moving block 6, when the moving block 6 moves in a direction away from the motor 4, the whole socket device 7 is also moved away from the motor 4, and as can be seen from fig. 8, during the movement of the socket device 7 of the two holding portions 29, the two sides of the ic board located in the middle of the two holding portions 29 are gradually abutted by the holding heads 8 slidably connected to the socket device 7 from the two sides to the middle.

In the process that the clamping heads 8 of the two clamping parts 29 slowly abut against the two sides of the integrated circuit board from the two sides, as shown in fig. 3, because the positioning members 80 of the clamping heads 8 are in sliding connection with the sleeve housing 70, when the clamping heads 8 on the two sides abut against the integrated circuit board, and meanwhile, the sleeve housings 70 on the two sides slowly move towards the middle of the integrated circuit board, the positioning members 80 slowly move towards the interior of the sleeve housing 70 inside the sleeve housing 70; meanwhile, the top block 74 is hinged with the external thread shaft 5, the external thread shaft 5 is in threaded connection with the moving block 6, and the top block 74 relatively moves towards the interior of the sleeve shell 70 under the driving of the external thread shaft 5 by the rotation of the motor 4; in the process, since the side edges of the top block 74 and the limiting outer ring 84 at the bottom of the positioning member 80 are provided with the limiting grooves 85 matched with the limiting convex strips 75 on the inner wall of the sleeve housing 70, in the process, the top block 74 and the positioning member 80 can not rotate, and only move in the axial direction of the sleeve housing 70, so that the clamping head 8 can not be turned over, and the clamping stability of the clamping head 8 can be maintained.

As described above, when the positioning member 80 slowly moves toward the inside of the sleeve housing 70 and the ejector block 74 also moves toward the inside of the sleeve housing 70, the spring 72 between the positioning member 80 and the ejector block 74 is compressed, so that the clamping heads 8 on both sides generate a clamping force on the middle direction of the middle integrated circuit board, when the spring 72 is compressed to a certain deformation amount, the bottom of the positioning member 80 presses the limit switch 73 on the ejector block 74, the limit switch 73 acts and transmits a switching signal to the control device electrically connected thereto, and meanwhile, the clamping force of the clamping heads 8 on the integrated circuit board also reaches a corresponding clamping force, so that different clamping forces on the integrated circuit board can be realized by installing the springs 72 with different elastic deformations.

When the control device receives the signal of the limit switch 73, the control device controls the motor 4 to stop rotating, and at this time, the integrated circuit board is clamped in the horizontal direction.

Meanwhile, after receiving the signal of the limit switch 73, the control device controls the solenoid valve electrically connected to the limit switch to operate, and further controls the external compressed air source to enter the air inlets 25 of the upper clamping member 810 and the lower clamping member 812 through the solenoid valve and the pipeline.

Referring to fig. 6 and 7, when the air inlet 25 is not supplied with compressed air, the diaphragm 10 is not deformed, the pressing plate 11 is sprung up against the diaphragm 10 under the upper cover plate 9 by the supporting spring 19, and the lower pressing plate 14 fixedly connected to the other end of the pressing rod 16 fixedly connected to the pressing plate 11 is abutted against the lower side of the positioning groove plate 13. When the air inlet 25 is supplied with compressed air, the air pressure, together with the elasticity of the diaphragm 10, under the action of compressed air, the diaphragm 10 deforms, the cavity structure between the upper surface inside the diaphragm 10 and the inner surface at the bottom of the upper cover plate 9 is filled with compressed air and is continuously enlarged, in the process, the deformed membrane 10 pushes the pressure plate 11, and as the pressure rod 16 fixedly connected with the bottom of the pressure plate 11 is connected with the pressure hole 17 in the middle of the bottom of the limiting groove 22 in a sliding way, therefore, when the pressing plate 11 is pushed, the supporting spring 19 is compressed, so that the pressing plate 11 slides downward until the pressing plate 11 is pressed to the bottom of the limiting groove 22, and the pressing plate 14 is pushed by the pressing force of the pressing rod 16, in the process, the positioning rod 18 is kept in the positioning hole 20 or the positioning hole 20 and the lower positioning hole 21 so as to ensure that the pressure plate 11 does not deflect in the process of pressing; the bottom of the pressing plate 14 is fixedly provided with a spacer 15, and the bottom of the spacer 15 is fixedly provided with an elastic clamping pad 82.

As described above, when the pressing plates 11 of the upper and

lower clamping members

810 and 812 of the two clamping devices are pressed down, the integrated circuit board, which has previously completed the horizontal direction clamping fixation, is subjected to the vertical direction clamping fixation.

When in actual application, the clamping force for clamping and fixing the integrated circuit board in the horizontal direction is controlled by the spring 72, and only when the clamping force in the horizontal direction reaches a certain value, the spring 72 can generate a corresponding deformation amount, so that the bottom of the clamping head 8 extrudes the contact switch 73, the motor 4 is stopped by the control device, and then the pressure is continuously applied to the integrated circuit board in the horizontal direction.

The clamping force for clamping and fixing the integrated circuit board in the vertical direction is realized by that compressed air with certain pressure in the figure 6 or 7 enters a cavity structure between the bottom of the upper cover plate 9 and the upper part of the diaphragm 10 through the air inlet 25, so that the diaphragm 10 is deformed, the pressure plate 11 is further pushed to overcome the elastic force of the supporting spring 19, and the spacer 15 moves towards the middle direction of the clamping head 8; it should be noted that, in this process, by selecting compressed air with different external pressures, different clamping forces in the vertical direction of the integrated circuit board can be realized. Because the pressure of the external compressed air is constant, and the supporting spring 19 has a certain elastic force opposite to the movement of the pressing plate 11, in the continuous given process of the external compressed air, a balance point can be reached between the pressure of the external compressed air and the elastic force of the supporting spring 19, so that after the lower pressing plate 14 and the bottom of the positioning groove plate 13 generate a certain displacement, the stable and non-continuous forced clamping of the given clamping force in the vertical direction of the integrated circuit board is realized.

Therefore, compressed air with different pressures is selected for use from the outside, so that different displacements can be generated between the bottom of the lower pressing plate 14 and the bottom of the positioning groove plate 13, and different and stable clamping force on the integrated circuit board in the vertical direction is realized.

On the other hand, two sets of upper clamping pieces 810 and lower clamping pieces 812 are arranged on the two sets of clamping devices, the structures of the upper clamping pieces 810 and the lower clamping pieces 812 are the same, so that four air inlets 45 are arranged, in this embodiment, the four air inlets 45 are all connected with the electromagnetic valve through pipelines, and therefore, in practice, the pipelines of the air inlets 45 can be connected with the electromagnetic valve through a plurality of reducing tee joints.

The integrated circuit board clamping using method of the clamping device for the integrated circuit board in the embodiment comprises the following steps:

the first step is as follows: and (4) clamping in the horizontal direction.

(1) The photoelectric switch 83 detects the signal of the integrated circuit board and transmits the signal to the control device;

(2) after receiving the signal of the photoelectric switch 83, the control device controls the motor 4 to rotate, and the moving block 6 slides in the limiting groove 3 in the direction far away from the motor 4 through thread transmission; the sleeve device 7 and the clamping head 8 on the moving block 6 move towards the direction of the integrated circuit board;

(3) in the moving process of the clamping head 8, the bottom of the groove in the middle of the clamping piece 81 is contacted with the edge of the integrated circuit board;

(4) the motor 4 continues to rotate, the positioning element 80 slides in the sleeve housing 70, and because the limiting outer ring 84 at the bottom of the positioning element 80 and the inner wall of the sleeve housing 70 have the limiting groove 85 and the limiting convex strip 75 which are matched with each other, the positioning element 80 cannot rotate, and the groove in the middle of the clamping element 81 is ensured not to rotate;

(5) the spring 72 starts to be compressed and gives a certain elastic force to the positioning member 80, so that the clamping member 81 has a clamping force in the horizontal direction on the integrated circuit board through force transmission;

(6) the springs 72 are further compressed and the corresponding clamping members 81 further increase the clamping force in the horizontal direction of the integrated circuit board;

(7) when the spring 72 is compressed to a certain degree, the bottom of the positioning member 80 in the sleeve housing 70 contacts the contact switch 73, and the contact switch 73 acts and transmits a signal to the control device;

(8) the control device controls the motor 4 to stop rotating, at this time, the positioning element 80 stops sliding relatively in the sleeve housing 70, the spring 72 is no longer compressed, the elastic force of the spring positioning element 80 is the clamping force on the integrated circuit board in the horizontal direction at this time, and the integrated circuit board is clamped in the horizontal direction.

The second step is that: and (4) clamping in the vertical direction.

(1) After the first horizontal clamping step is completed, the integrated circuit board to be clamped is positioned in the groove in the middle of the clamping piece 81 and between the upper clamping piece 810 and the lower clamping piece 812; at the moment, the control device controls the electromagnetic valve to be electrified;

(2) after the electromagnetic valve is electrified, a compressed air source with certain pressure outside enters the air inlet 25 through the electromagnetic valve and a pipeline;

(3) the cavity between the bottom of the upper cover plate 9 and the upper surface of the elastic membrane 10 is inflated and the volume of the cavity is gradually increased;

(4) the volume of the cavity is increased, pressure is applied to the pressure plate 11, and the pressure overcomes the elastic force of the supporting spring 19, so that the pressure plate 11 slowly moves towards the inwards concave limiting groove 22 in the middle of the positioning groove plate 13;

(5) the supporting spring 19 is further compressed while the amount of deformation of the supporting spring 19 is gradually increased, and the elastic force of the supporting spring is proportional to the amount of deformation thereof; when the amount of deformation of the supporting springs 19 reaches a certain level, the elastic force of the supporting springs 19 will be equal to the pressure applied to the pressure plate 11 by the external compressed air; at this time, the supporting spring 19 is not deformed any more, and the pressing plate 11 is not moved any more; since the pressing plate 11 is fixedly connected with the lower pressing plate 14 through the pressing rod 16, the lower pressing plate 14 also displaces in the same direction as the pressing plate 11 at this time, and the upper and lower clamping pieces 812 have the same structure as the upper clamping piece 810, so that the integrated circuit board is clamped in the vertical direction.

After the integrated circuit board is clamped in the horizontal direction and the vertical direction, as shown in fig. 8, the stepping motor 29 can be controlled by the control device to rotate, so that the screw 28 fixedly connected with the motor shaft of the stepping motor 29 is driven to rotate, because the screw 28 is in threaded connection with the internal thread 2 of the clamping part 29, the other end of the screw 28 is hinged with the fixed block 30, and the bottom of the conveying block 1 is in sliding connection with the guide plate 27, the integrated circuit board is clamped between the two clamping parts 29 under the action of the stepping motor 26, so that stable conveying is realized; the stepping motor 26 can be controlled to stop as required to process, weld, spray and the like the integrated circuit board. After each process operation is completed, the control device can convey the integrated circuit board to one side of the platform 31 through the rotation of the stepping motor 26, then the control device controls the electromagnetic valve to reset, compressed air is not given at the air inlet 25, so that the membrane 10 is restored, as shown in fig. 6 or fig. 7, after the membrane 10 is restored, under the elastic action of the supporting spring 19, the pressing plate 11 is bounced, so that the pressing plate 14 is driven to move towards the direction close to the positioning groove plate 13, and finally, the integrated circuit board is restored to the initial state and is not clamped in the vertical direction.

The control unit then controls the motor 4 to move in the opposite direction until the motor 4 returns to the original initial position and the contact switch 73 is reset or the motor 4 returns to the original initial position.

It should be noted that, in the clamping device for an ic board of the present application, the selection principle of the spring 72 is as follows: the deformation of the spring 72 is exactly zero when the contact switch 73 is just in contact with the bottom of the positioning member 80 located in the sleeve housing 70. The purpose of this is to accurately judge the time point when the motor 4 stops when the clamping force of the integrated circuit board in the horizontal direction is removed, that is, when the contact switch 73 is reset, the motor 4 stops rotating, and the deformation amount of the spring 72 is just 0 at this time, and no force is applied to the integrated circuit board in the horizontal direction.

According to the clamping device for the integrated circuit board, the integrated circuit board is stably clamped in the horizontal direction through the two parallel clamping parts 29, and the clamping force can be controlled through the selection of the spring 72; compressed air with different pressures is selected from the outside, so that different displacements can be generated between the lower pressing plate 14 and the bottom of the positioning groove plate 13, and different and stable clamping forces on the integrated circuit board in the vertical direction are realized; the clamping device is suitable for stable clamping of the integrated circuit board in the automatic production process and batch operation, and solves the problems that the integrated circuit board is not clamped or is not stably clamped and the clamping force is overlarge in the prior art; convenient to use when using can realize the location centre gripping to integrated circuit board and loosen the circuit board through controlling means automatic completely, improves work efficiency greatly in the operation process of working in batches.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Although the specific embodiments of the present application have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present application, and it should be understood that those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present application.

Claims

1. A clamping device for an integrated circuit board, comprising a control device and a clamping part (29), characterized in that:

the clamping part (29) comprises a conveying block (1), a motor (4) is fixedly mounted at the top of the conveying block (1), an external thread shaft (5) is fixedly connected to the top of a motor shaft of the motor (4), the external thread shaft (5) is in threaded connection with a moving block (6) through an internal thread hole in the middle of the moving block (6), and the bottom of the moving block (6) is located in a limiting groove (3) at the top of the conveying block (1) and is in sliding connection with the limiting groove (3); the top end of the external thread shaft (5) extends out of the moving block (6) and is hinged with one end of the top block (74), and the top block (74) is positioned in a hollow sleeve shell (70) vertically and fixedly arranged on the moving block (6) and is in sliding connection with the inside of the sleeve shell (70); the other end of the top block (74) is fixedly provided with a contact switch (73), and the contact switch (73) is electrically connected with a control device; a limiting inner ring (71) is integrally formed in an opening at the top end of the sleeve shell (70), the sleeve shell (70) is in sliding connection with the clamping head (8) through the opening at the top end, and a limiting outer ring (84) is integrally formed at the bottom end of the clamping head (8) inside the sleeve shell (70); a spring (72) is arranged between the contact switch (73) and the bottom of the clamping head (8) in the sleeve shell (70).

2. The holding device for an ic board according to claim 1, wherein:

the sleeve is characterized in that a fixed limiting convex strip (75) parallel to the central line direction of the sleeve shell (70) is arranged on the inner wall of the sleeve shell (70), and a limiting groove (85) corresponding to the limiting convex strip (75) is formed in the side edge of the limit outer ring (84) and the top block (74).

3. The holding device for an ic board according to claim 1, wherein:

the clamping head (8) comprises a positioning piece (80), one end of the positioning piece (80) is connected with the sleeve shell (70) in a sliding mode, the other end of the positioning piece is fixedly connected with a clamping piece (81), a transverse groove is formed in the front end of the clamping piece (81), an elastic clamping pad (82) is fixedly installed in the transverse groove, a photoelectric switch (83) is fixedly installed on the clamping piece (81) in the direction of the horizontal central line of the transverse groove, and the photoelectric switch (83) is electrically connected with the control device.

4. A holding device for an ic board according to claim 3, wherein:

the clamping piece (81) comprises an upper clamping piece (810) and a lower clamping piece (812) which are parallel to each other, and the upper clamping piece (810) and the lower clamping piece (812) are fixedly connected through a connecting piece (811).

5. The holding device for an IC board according to claim 4, wherein:

the upper clamping piece (810) comprises an upper cover plate (9), the top of the upper cover plate (9) is provided with a through hole, and the through hole is fixedly connected with the air inlet (25); the periphery of the bottom of the upper cover plate (9) is fixedly connected with the periphery of an elastic membrane (10), and a cavity structure is formed between the upper surface inside the membrane (10) and the inner surface of the bottom of the upper cover plate (9);

the upper cover plate (9) is fixedly connected with a positioning groove plate (13) below, an inward concave limiting groove (22) is arranged in the middle of the upper part of the positioning groove plate (13), a pressing hole (17) penetrating through the limiting groove (22) is arranged in the middle of the bottom of the limiting groove (22), and two positioning holes (20) penetrating through the limiting groove (22) are arranged on two sides of the pressing hole (17) in the bottom of the limiting groove (22);

a pressure rod (16) is connected in the pressure hole (17) in a sliding manner, a pressure plate (11) is fixedly connected to the top of the pressure rod (16), the pressure plate (11) is located below a cavity structure formed between the inner upper surface of the diaphragm (10) and the inner surface of the bottom of the upper cover plate (9) and can slide up and down in a limiting groove (22), positioning rods (18) are integrally formed on the lower surface of the pressure plate (11) and the positions corresponding to the two positioning holes (20), a supporting spring (19) with one end fixedly installed at the bottom of the pressure plate (11) is sleeved outside the two positioning rods (18), a lower pressure plate (14) is vertically and fixedly installed at the bottom of one end of the pressure rod (16) penetrating through the pressure hole (17), and a spacer (15) is fixedly installed at the bottom of the lower pressure plate (14);

the lower clamping piece (812) is identical to the upper clamping piece (810) in structure.

6. The holding device for an ic board according to claim 5, wherein:

a sealing gasket (12) is arranged between the upper cover plate (9) and the positioning groove plate (13).

7. The clamping device of claim 5, wherein:

the positions of the lower pressure plate (14) corresponding to the two positioning rods (18) are respectively provided with a lower positioning hole (21).

8. The holding device for an ic board according to claim 5, wherein:

the diameter of the bottom of the supporting spring (19) is larger than that of the positioning hole (20).

9. The clamping device of claim 5, wherein:

the air inlets (25) are connected with electromagnetic valve pipelines through air paths, the electromagnetic valves are connected with external compressed air source pipelines, and the electromagnetic valves are electrically connected with the control device.

10. The use method of the clamping device for the integrated circuit board as claimed in claim 2 or 9, comprising the steps of:

s0, the photoelectric switch (83) detects the signal of the integrated circuit board and transmits the signal to the control device;

s1, after receiving the signal of the photoelectric switch (83), the control device controls the motor (4) to rotate, and the moving block (6) slides in the limit groove (3) in the direction far away from the motor (4) through thread transmission; the sleeve device (7) and the clamping head (8) on the moving block (6) move towards the direction of the integrated circuit board;

s2, in the moving process of the clamping head (8), the bottom of the groove in the middle of the clamping piece (81) contacts the edge of the integrated circuit board;

s3, the motor (4) continues to rotate, the positioning piece (80) slides in the sleeve shell (70), and the positioning piece (80) cannot rotate because a limiting groove (85) and a limiting convex strip (75) which are matched with each other exist between a limiting outer ring (84) at the bottom of the positioning piece (80) and the inner wall of the sleeve shell (70), so that the groove in the middle of the clamping piece (81) cannot rotate;

s4, the spring (72) starts to be compressed and gives a certain elastic force to the positioning piece (80), and the clamping piece (81) has a clamping force in the horizontal direction to the integrated circuit board through force transmission;

s5, the spring (72) is further compressed, and the corresponding clamping piece (81) further increases the clamping force on the integrated circuit board in the horizontal direction;

s6, when the spring (72) is compressed to a certain degree, the bottom of the positioning piece (80) in the sleeve shell (70) contacts the contact switch (73), the contact switch (73) is switched on and transmits the signal to the control device;

and S7, the control device controls the motor (4) to stop rotating, at the moment, the positioning piece (80) stops relative sliding in the sleeve shell (70), the spring (72) is not compressed any more, the elastic force of the positioning piece (80) given by the spring is the clamping force on the integrated circuit board in the horizontal direction at the moment, and the integrated circuit board is clamped in the horizontal direction.

The second step is that: vertical clamping, comprising the following steps:

n1, after the electromagnetic valve is electrified, a compressed air source with certain pressure outside enters the air inlet (25) through the electromagnetic valve and a pipeline;

n2, inflating the cavity between the bottom of the upper cover plate (9) and the upper surface of the elastic membrane (10) and gradually enlarging the volume of the cavity;

n3, increasing the volume of the cavity, applying pressure to the pressure plate (11), overcoming the elasticity of the supporting spring (19), and making the pressure plate (11) slowly move towards the limiting groove (22) which is concave in the middle of the positioning groove plate (13);

n4, the supporting spring (19) is further compressed, and the deformation quantity of the supporting spring (19) is gradually increased, and the elastic force of the supporting spring is in direct proportion to the deformation quantity, so when the deformation quantity of the supporting spring (19) reaches a certain degree, the elastic force of the supporting spring (19) is equal to the pressure applied to the pressure plate (11) by the external compressed air gas; at the moment, the supporting spring (19) does not deform continuously, and the pressing plate (11) does not move any more; because the pressing plate (11) is fixedly connected with the lower pressing plate (14) through the pressing rod (16), the lower pressing plate (14) also displaces in the same direction as the pressing plate (11), and the upper clamping piece (812) and the lower clamping piece (810) have the same structure as the upper clamping piece (810), so that the integrated circuit board is clamped in the vertical direction.