CN211840512U

CN211840512U - PCB (printed circuit board) clamp

Info

Publication number: CN211840512U
Application number: CN202020320330.XU
Authority: CN
Inventors: 陈雨; 权海平
Original assignee: Nanjing Institute of Mechatronic Technology
Current assignee: Nanjing Institute of Mechatronic Technology
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-11-03
Anticipated expiration: 2030-03-16

Abstract

The utility model discloses a PCB anchor clamps, including fixed subassembly and thermal-insulated subassembly, be equipped with one set of thermal-insulated subassembly respectively in the both sides of fixed subassembly, fixed subassembly includes the base and establishes the slip clamping device on it, and thermal-insulated subassembly includes heat insulating board and rotatable arm, and rotatable arm one end is rotationally connected on the heat insulating board, the other end rotationally connects on the outstanding step that is the L type on the base, sets up the thermoweld mouth at the heat insulating board middle part. The simple structure of this anchor clamps, convenient operation can rotate the heat insulating board and shelter from behind PCB top fixed when using hot-blast rifle to weld the component, only exposes the less regional straight high temperature environment of treating the welding of area among the welding process, and PCB is difficult for taking place the condition that bending deformation breaks away from PCB anchor clamps even because of high temperature, reduces the welding defective rate, guarantees the productivity.

Description

PCB (printed circuit board) clamp

Technical Field

The utility model relates to a frock clamp technical field especially relates to a PCB anchor clamps.

Background

A PCB (printed Circuit board), which is called a printed Circuit board in chinese, is an electronic component element printed and spatially configured for mounting electronic components, and is an important provider of electrical connection of electronic components due to advantages of high wiring density, small size, light weight, and contribution to miniaturization of electronic devices, and the like. Currently, a common PCB generally includes more than two layers of substrates.

Surface Mount Technology (SMT) is a circuit assembly Technology in which Surface Mount components without leads or short leads are mounted on the Surface of a PCB and soldered and assembled by reflow or dip soldering. When the components are installed and the solid parts are welded under the reflow furnace equipment, the PCB provided with the plug-in components is easy to bend and deform or separate from the PCB fixture due to high temperature, so that the welding reject ratio is increased, the productivity is reduced, and the service life of the PCB fixture is reduced.

Disclosure of Invention

In order to solve the problem, the utility model provides a PCB anchor clamps, simple structure, PCB location clamping process is simple and convenient, and conveniently assembles spare part on PCB, can prevent that other spare parts from being blown away by hot-blast rifle.

In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme: the utility model provides a PCB anchor clamps, is equipped with one set of thermal-insulated subassembly respectively including fixed subassembly and thermal-insulated subassembly in the both sides of fixed subassembly, and fixed subassembly includes the base and establishes the slip clamping device on it, and the thermal-insulated subassembly includes heat insulating board and rotatable arm, and rotatable arm one end is rotationally connected on the heat insulating board, and the other end rotationally connects on the outstanding step that is the L type on the base, sets up the heat-welding mouth in the middle part of the heat insulating board.

Furthermore, the rotatable mechanical arm is formed by splicing two connecting rods, the connecting ends of the two connecting rods are rotatably connected through rotating positioning screws, the free end of one connecting rod is rotatably connected to the heat insulation plate through the rotating positioning screws, and the free end of the other connecting rod is rotatably connected to the base through the rotating positioning screws.

Further, the sliding clamping device comprises a fixed baffle and a pushing piece which are separately arranged at two ends of the base, the pushing piece comprises a fixed seat, a sliding block and a telescopic rod which is connected with the fixed seat and the sliding block, the fixed seat is fixedly connected to the base, a longitudinal sliding groove is formed in the base and between the fixed baffle and the fixed seat, the bottom of the sliding block is connected with the sliding groove and can move along the sliding groove, and a compression spring is sleeved on the telescopic rod.

Furthermore, one end of the compression spring is connected with the sliding block, and the other end of the compression spring is connected with the fixed seat.

Further, the base and the connecting rod are made of stainless steel materials.

The utility model has the advantages that:

1. the utility model discloses a PCB fixture simple structure, convenient operation, can use the hot-blast rifle to weld the component, rotate the heat insulating board and shelter from behind PCB top fixed, only expose the area less in the welding process and wait that the welding area straight face high temperature environment, PCB is difficult for taking place the bending deformation because of the high temperature and even break away from the condition of PCB fixture, reduce the welding defective rate, guarantee the productivity;

2. the superposed heat insulation plate can effectively shield a non-welding area and can play a role in preventing other components from being blown away by the hot air gun;

3. in the welding process, the fixture can prevent the whole sliding clamping device from being exposed in a high-temperature environment, and the service life of the fixture can be further ensured.

Drawings

FIG. 1 is a schematic top view of a PCB fixture;

FIG. 2 is a schematic front view of a base of the PCB clamp of FIG. 1;

FIG. 3 is a diagram illustrating a state of use of a PCB clamp;

wherein, 1-a fixed component and 2-a heat insulation component;

11-base, 12-sliding clamping device;

111-protruding step;

121-fixed baffle, 122-pushing piece;

1221-a fixed seat, 1222-a sliding block, 1223-a telescopic rod, 1224-a sliding groove and 1225-a compression spring;

21-a heat insulation plate, 22-a movable mechanical arm and 23-a hot welding opening;

221-link, 222-rotation set screw.

Detailed Description

The following description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings 1-3, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be defined more clearly and clearly.

In order to avoid the bad influence of high temperature on the PCB main body during the thermal welding process and further ensure the welding yield and productivity, the embodiment discloses a PCB fixture, which comprises a fixing component 1 and a heat insulation component 2, a set of heat insulation components 2 are respectively arranged at two sides of the fixed component 1, the fixed component 1 comprises a stainless steel base 11 and a sliding clamping device 12 arranged on the stainless steel base, the heat insulation components 2 comprise a heat insulation plate 21 and a rotatable mechanical arm 22, the rotatable arm 22 has one end rotatably coupled to the heat-insulating plate 21 and the other end rotatably coupled to the L-shaped protruding step 111 of the base 11, so that one end is coupled to the protruding step 111 higher than the base in order to prevent the heat-insulating plate 21 from rotating, the clamping parts protruding from the base 11 interfere with the position of the base, and a heat-welded junction 23 is formed in the middle of the heat-insulating plate 21.

The rotatable mechanical arm 22 is formed by splicing two connecting rods 221 made of stainless steel, the connecting ends of the two connecting rods 221 are rotatably connected through rotating positioning screws 222, the free end of one connecting rod 221 is rotatably connected to the heat insulation plate 21 through the rotating positioning screws 222, the free end of the other connecting rod 221 is rotatably connected to the base 11 through the rotating positioning screws 222, and the rotating positioning screws can be of self-locking knob plungers or hexagon bolts locked by nuts, so that the clamping loosening rotation and locking effects can be achieved.

The sliding clamping device 12 comprises a fixed baffle 121 and an ejector 122 which are separately arranged at two ends of a base 11, the ejector 122 comprises a fixed seat 1221, a sliding block 1222 and a telescopic rod 1223 which connects the fixed seat 1221 and the sliding block 1222, the fixed seat 1221 is fixedly connected to the base 11, a longitudinal sliding groove 1224 is arranged on the base 11 and between the fixed baffle 121 and the fixed seat 1221, the bottom of the sliding block 1222 is connected with the sliding groove 1224 and can move along the sliding groove 1224, and a compression spring 1225 is sleeved on the telescopic rod 1223; one end of the compression spring 1225 is connected to the sliding block 1222, and the other end is connected to the fixing base 1221.

When the sliding block 1222 is used, the sliding block 1222 is moved towards the fixing base 1221 to leave a PCB placement area, the PCB is placed between the fixing baffle 121 and the compression block, one end of the PCB abuts against the fixing baffle 121, and then the sliding block 1222 is slowly released to push the other side of the PCB to complete the fixing of the PCB.

Next, the position of the heat insulation plates is moved by the rotatable mechanical arm 22, the exposed area after the overlapping of the hot welding openings 23 on the two heat insulation plates 21 is right opposite to the area to be welded, then the rotary positioning screws 222 are screwed and locked to fix the position of the heat insulation plates 21, finally, the air blowing openings of the hot air guns are aligned to the exposed area for hot welding, the shielding of the two heat insulation plates 21 can prevent the whole PCB from being exposed under a high-temperature environment and deforming in the welding process, the yield is ensured, and some small parts cannot be blown away by hot air.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a PCB anchor clamps, a serial communication port, including fixed subassembly (1) and thermal-insulated subassembly (2), both sides at fixed subassembly (1) are equipped with one set of thermal-insulated subassembly (2) respectively, fixed subassembly (1) includes base (11) and establishes slide clamping device (12) on it, thermal-insulated subassembly (2) are including heat insulating board (21) and rotatable arm (22), rotatable arm (22) one end is rotationally connected on heat insulating board (21), the other end rotationally connects on base (11) and is outstanding step (111) of L type, set up hot weld mouth (23) in heat insulating board (21) middle part.

2. A PCB clamp as claimed in claim 1, wherein the rotatable robot arm (22) is formed by splicing two links (221), the connected ends of the two links (221) are rotatably connected by a rotational set screw (222), wherein the free end of one link (221) is rotatably connected to the heat shield (21) by the rotational set screw (222), and the free end of the other link (221) is rotatably connected to the base (11) by the rotational set screw (222).

3. The PCB fixture of claim 2, wherein the sliding clamping device (12) comprises a fixed baffle (121) and an ejector (122) which are separately arranged at two ends of the base (11), the ejector (122) comprises a fixed seat (1221), a sliding block (1222) and a telescopic rod (1223) for connecting the fixed seat and the sliding block, the fixed seat (1221) is fixedly connected to the base (11), a longitudinal sliding groove (1224) is arranged on the base (11) and between the fixed baffle (121) and the fixed seat (1221), the bottom of the sliding block (1222) is connected with the sliding groove (1224) and can move along the sliding groove (1224), and a compression spring (1225) is sleeved on the telescopic rod (1223).

4. A PCB fixture as claimed in claim 3, wherein the compression spring (1225) is connected to the sliding block (1222) at one end and to the fixed seat (1221) at the other end.

5. A PCB clamp as claimed in claim 4, characterised in that the base (11) and the connecting rod (221) are made of stainless steel.