CN218006658U - PCB welding clamping device - Google Patents

Abstract

The utility model discloses a PCB board welding clamping device, clamping device is including activity kicking block, expanding spring, back lid, and wherein the activity kicking block is held by expanding spring top, back lid is located the below of activity kicking block, and back lid has back lid groove, and back lid groove is provided with expanding spring, the activity kicking block stretches into back lid groove, is held by the expanding spring top, can carry out reciprocating motion. The utility model discloses a back lid sets up expanding spring, can effectively reduce clamping device's upper and lower space, designs into little and flat product with clamping device, has reduced thickness and has thin, can reduce temperature loss effectively, avoids the influence to PCB welded.

Description

PCB welding clamping device

Technical Field

The utility model relates to a welding jig especially relates to a clamping device that is used for paster welding jig of PCB board.

Background

The PCB board is also called as a printed circuit board or a PCB, and is an important component of electronic devices such as electrical devices and computers, and is usually printed by using an electronic printing technique. The PCB board of seal tin paster needs the process through the printing tin cream before getting into the use, because the PCB board is very thin, consequently need be extremely careful in the aspect of adopting the welding tool, and the welding tool of current adoption although can accomplish seal tin reflow soldering process, nevertheless because fixed unstable, the phenomenon is deviate from the tool easily to appear rocking and PCB board at seal tin paster reflow soldering tin in-process very easily, cause the welding inconvenient, welding speed is slow, welding precision low grade, and dismouting PCB board is extremely its inconvenient, it is careless slightly, will cause scrapping of PCB board and electronic component, and then the resource has been wasted, consequently, people have designed the tool specially and assisted its welding.

Like patent application 202020288708.2, this patent application discloses a PCB board welding jig, comprises a workbench, servo motor, drive screw, the fixed plate, sliding plate and PCB board chuck, the parallel establishment of fixed plate and sliding plate is on the workstation, and the sliding plate can follow the width direction front and back slip setting of workstation, PCB board chuck is respectively relative parallel's setting on the inside wall of the upper end of fixed plate and sliding plate, and PCB board chuck can dismantle fixed connection with the inside wall of fixed plate and sliding plate respectively, drive screw's the one end is rotatable wears to locate the fixed plate setting, drive screw's the other end and sliding plate threaded connection, servo motor sets up the one side at the workstation, servo motor and drive screw's end connection, form the centre gripping mouth that supplies PCB board clamp fastening to fix between the inside wall of two PCB board chucks.

The utility model discloses a can press from both sides tight fixedly to the PCB board of different width sizes, however, the push-and-pull device of the angle position or the limit position that this kind of tool structure exists is thicker, has increased the thickness and the volume of tool, in follow-up income stove heating welding process, leads to temperature loss big, has certain negative effects to PCB board welded stability and reliability. Therefore, the thickness of the jig is necessarily reduced to reduce the heat loss, and the contact portion with the PCB is reduced to reduce the influence on the PCB.

Disclosure of Invention

To the weak point that exists in the above-mentioned technique, the utility model provides a PCB board welding clamping device, this clamping device is small, and thickness is thin, can reduce temperature loss effectively, avoids the influence to PCB welded.

Another object of the utility model is to provide a PCB board welding clamping device, this clamping device is stable, reliable to the centre gripping of PCB board, can not make the PCB board produce and warp, and simple structure, easily realizes, uses in the current PCB welding process of being convenient for.

To achieve the above object, the present invention is implemented as follows:

the utility model provides a PCB board welding clamping device, clamping device is including activity kicking block, expanding spring, back lid, and wherein the activity kicking block is held by expanding spring top, back lid is located the below of activity kicking block, and back lid has back lid groove, and back lid groove is provided with expanding spring, the activity kicking block stretches into back lid groove, is held by the expanding spring top, can carry out reciprocating motion. This kind of structural design sets up expanding spring through the back lid, can powerfully reduce clamping device's upper and lower space, designs into little and flat product with clamping device, has reduced thickness and has thin, can reduce temperature loss effectively, avoids the influence to PCB welding.

During the use, the front end top of activity kicking block holds the PCB board, and the completion is fixed to the centre gripping of PCB board, and at this in-process, the activity kicking block is held by expanding spring top, and PCB board welding is accomplished the back, takes out the PCB board, and the activity kicking block resets under with the effect that can expanding spring.

Furthermore, the middle part of activity kicking block has a recess, and a spacing bolt sets up in the recess, carries on spacingly to the position of activity kicking block, avoids the excessive removal of activity kicking block. The limiting bolt can limit the forward moving distance of the movable top block and can limit the backward moving position of the movable top block.

Furthermore, an arc-shaped elastic piece is further arranged, an annular groove is formed in the lower portion of the limiting bolt, meanwhile, the arc-shaped elastic piece is provided with a strip-shaped groove, and the strip-shaped groove corresponds to the annular groove of the limiting bolt, so that the limiting bolt can move along the strip-shaped groove; the arc-shaped elastic sheet is matched with the limiting bolt to perform positioning and limiting functions.

Furthermore, the front of the movable top block is provided with a top holding wall, and the top holding wall is bent downwards to form a top holding surface so as to clamp the PCB; the middle part of the movable ejector block extends outwards to form two corresponding extending wings, the extending wings bend downwards to form a jacking part, and the jacking part extends into the rear cover groove and is jacked by the telescopic spring.

Furthermore, a friction plate is arranged above the movable ejector block, the protection of the movable ejector block is increased through the friction plate, the stress degree of the movable ejector block is increased, and the movable ejector block can only generate displacement under certain acting force.

Furthermore, the rear part of the movable top block is provided with a protective wing, the friction plate is embedded between the protective wings, and the friction plate is positioned through the protective wing and has a protective effect.

Furthermore, the front ends of the protective wings are provided with protruding shoulders which can buckle the PCB, and the PCB is fixed when the friction plate is not used.

Furthermore, the back lid symmetry is provided with two back lid grooves, all is provided with expanding spring in every back lid groove to form balanced thrust to the activity kicking block.

Further, the movable ejector block and the rear cover are both provided with the vacancy grooves, the vacancy grooves are used for reducing the weight of the movable ejector block and the rear cover, excessive heat loss caused by the fact that the movable ejector block and the rear cover absorb heat is avoided, and therefore temperature loss can be effectively reduced.

The beneficial effects of the utility model are that:

the utility model discloses a structural design has changed the structure of original PCB centre gripping structure, and the clamping device who realizes has less volume and thickness, can reduce the temperature loss by the maximum possible. And the PCB can be effectively fixed, so that the production quality of the PCB is ensured, and the production stability of the PCB is improved.

Drawings

Fig. 1 is an exploded view of the structure of the present invention.

Fig. 2 is a schematic view of the structure assembly realized by the present invention.

Fig. 3 is a schematic structural diagram of the movable top block of the present invention.

Fig. 4 is the utility model discloses install in PCB board welding jig schematic diagram.

Fig. 5 is an enlarged view of a portion a in fig. 4.

Fig. 6 is the utility model discloses install in the schematic diagram at the PCB board welding jig back.

Fig. 7 is an enlarged view of a portion B in fig. 6.

Detailed Description

In order to more clearly describe the present invention, the present invention will be further described with reference to the accompanying drawings.

Fig. 1, fig. 2 show, do the utility model discloses the PCB board welding clamping device who realizes, clamping device is including friction disc 1, activity kicking block 2, spacing bolt 3, expanding spring 4, back lid 5 and dome-shaped elastic sheet 6, and wherein, friction disc 1 covers in the top of activity kicking block 2, and activity kicking block 2 is held by expanding spring 4 top, back lid 5 is located the below of activity kicking block 2, and back lid 5 has back lid groove 51, and back lid groove 51 is provided with expanding spring 4, activity kicking block 2 stretches into back lid groove 51, is held by expanding spring 4 top, can carry out reciprocating motion.

The friction plate 1 is arranged above the movable top block 2, the friction plate 1 is mainly used for supporting the PCB, and the friction plate and the movable top block 2 jointly act to clamp and fix the PCB, so that the PCB is convenient to weld. Meanwhile, the protection of the movable ejector block 2 can be increased through the friction plate 1, the stress degree of the movable ejector block 2 is increased, and the movable ejector block 2 can only generate displacement under certain acting force.

As for the movable top block 2, as shown in fig. 3, a groove 21 is formed in the middle of the movable top block, and a limiting bolt 3 is disposed in the groove 21 to limit the position of the movable top block 2, so as to prevent the movable top block 2 from moving excessively.

A supporting wall 23 is arranged in front of the movable top block 2, and the supporting wall 23 is bent downwards to form a supporting surface so as to clamp the PCB (see fig. 4); two corresponding extending wings 24 extend outwards from the middle part of the movable top block 2, the extending wings 24 are bent downwards to form a propping part 25, and the propping part 25 extends into the rear cover groove 51 and is propped by the extension spring 4.

Meanwhile, the rear part of the movable top block 2 is provided with a protective wing 26, the friction plate 1 is embedded between the two protective wings 26, the friction plate 1 is positioned through the protective wings 26, and the friction plate 1 is protected.

The friction disc 1 is not the necessary component of the utility model, in other embodiments, also can needn't set up friction disc 1, can directly utilize flap 26 to push up and hold the PCB board this moment, can accomplish the fixed to the PCB board equally, only need not be high to the clean and tidy degree requirement at PCB board edge this moment.

The front end of the wing 26 has a protruding shoulder 261, and the shoulder 261 can be buckled with a PCB to fix the PCB when the friction plate 1 is not used.

Still be provided with the vacancy groove 22 in the main part of activity kicking block 2, vacancy groove 22 is used for alleviateing the weight of activity kicking block, avoids activity kicking block 2 to absorb the heat and causes too much calorific loss to can reduce temperature loss effectively.

The limiting bolt 3 can limit the forward movement distance of the movable top block 2 and also can limit the backward movement position of the movable top block 2. Specifically, as shown in fig. 7, the lower portion of the limit bolt 3 has an annular groove 31, and the arc-shaped elastic piece 6 has a strip-shaped groove 61, the strip-shaped groove 61 corresponds to the annular groove 31 of the limit bolt 3, so that the limit bolt can move along the strip-shaped groove; the arc-shaped elastic sheet is matched with the limiting bolt to perform positioning and limiting functions.

The rear cover 5 is symmetrically provided with two rear cover grooves 51, the number of the extension springs 4 is two, the two extension springs 4 are respectively arranged in the two rear cover grooves 51 symmetrically arranged on the rear cover 5, and the two extension springs 4 have balanced acting force on the movable ejector block 2.

The empty groove 51 is also provided in the rear cover 5, and the empty groove 51 is used to reduce the weight of the rear cover 5, thereby preventing excessive heat loss caused by heat absorption of the rear cover 5, and effectively reducing temperature loss.

The utility model discloses a back lid sets up expanding spring, can effectively reduce clamping device's upper and lower space, designs into little and flat product with clamping device, has reduced thickness, covers simultaneously and has sufficient hole, groove with the back, can reduce thermal absorption, reduces temperature loss effectively, avoids the influence to PCB welded.

With reference to fig. 4-7, the working principle is as follows: when the PCB clamping and fixing device is used, the front end propping wall 23 of the friction plate 1 and the movable top block 2 props against a PCB to clamp and fix the PCB, in the process, the propping part 25 of the movable top block 2 is propped by the telescopic spring 4, and the friction plate 1 and the movable top block 2 displace outwards under the pushing of the PCB; after the PCB is welded, the PCB is taken out and does not produce acting force on the movable top block 2 any more, and thus the friction plate 1 and the movable top block 2 reset under the action of the telescopic spring 4.

In a word, the utility model discloses a structural design has changed the structure of original PCB centre gripping structure, and the clamping device who realizes has less volume and thickness, can reduce temperature loss as far as possible. And the PCB can be effectively fixed, so that the production quality of the PCB is ensured, and the production stability of the PCB is improved.

And the clamping device is stable and reliable in clamping the PCB, the PCB cannot be deformed, and the clamping device is simple in structure, easy to realize and convenient to use in the existing PCB welding process.

The clamping device is applied to a jig of a PCB, the jig can be set according to needs, one or a plurality of clamping devices can be arranged, and the set position can be adjusted randomly.

The above disclosure is only for the specific embodiments of the present invention, but the present invention is not limited thereto, and any changes that can be made by those skilled in the art should fall within the protection scope of the present invention.

Claims (9)

1. The utility model provides a PCB board welding clamping device, clamping device is including activity kicking block, expanding spring, back lid, its characterized in that the activity kicking block is held by expanding spring top, back lid is located the below of activity kicking block, and back lid has back lid groove, and back lid groove is provided with expanding spring, the activity kicking block stretches into back lid groove, is held by the expanding spring top, can carry out reciprocating motion.

2. The PCB welding clamping device of claim 1, wherein the middle part of the movable top block is provided with a groove, and a limiting bolt is arranged in the groove to limit the position of the movable top block.

3. The PCB welding clamping device of claim 2, further comprising a curved spring, wherein the lower portion of the limiting bolt is provided with an annular groove, and the curved spring is provided with a strip-shaped groove corresponding to the annular groove of the limiting bolt, so that the limiting bolt can move along the strip-shaped groove.

4. The PCB welding and clamping device of claim 2, wherein the front of the movable top block is provided with a top supporting wall, and the top supporting wall is bent downwards to form a top supporting surface; the middle part of the movable ejector block extends outwards to form two corresponding extending wings, the extending wings bend downwards to form a jacking part, and the jacking part extends into the rear cover groove and is jacked by the telescopic spring.

5. The PCB welding clamping device of claim 1, wherein a friction plate is arranged above the movable top block.

6. The PCB welding and clamping device as claimed in claim 5, wherein the movable top block is provided with a protective wing at the rear part, and the friction plate is embedded between the protective wings.

7. The PCB welding clamp device of claim 6, wherein the front end of said wing has a protruding shoulder.

8. The PCB welding clamping device of claim 1, wherein the back cover is symmetrically provided with two back cover grooves, and each back cover groove is internally provided with a telescopic spring.

9. The PCB welding clamping device of claim 1, wherein the movable top block and the rear cover are both provided with a vacant slot.

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