CN206629338U - Fixing fixture for wave soldering circuit board - Google Patents

Abstract

The utility model provides a crest bonding circuit board fixing clamp, which comprises a motor, a nut seat, a chuck, a clamping groove, a bidirectional ball screw, a fixing groove, a spring, a guide sleeve, a guide rod and a fixing clamp plate, wherein the fixing groove is arranged at the middle position of the upper end surface of the tooling base, the bidirectional ball screw is assembled in the fixing groove, the motor is fixed at the middle position of the left end surface of the tooling base, the nut seat is arranged on the bidirectional ball screw, the chuck is fixed on the upper end surface of the nut seat, the clamping groove is arranged on the right end surface of the chuck, the design realizes the rapid fixation of the transverse position of the circuit board, the operation of an operator is convenient, the guide sleeve is fixed at the middle position of the upper end surface in the clamping groove, the spring is assembled in the guide sleeve, the guide rod is assembled in the guide sleeve, the fixing clamp plate is arranged, convenient operation and high reliability.

Description

Fixing fixture for wave soldering circuit board

technical field

The utility model relates to a fixture for fixing a wave soldering circuit board, which belongs to the field of welding technical equipment.

Background technique

Wave soldering refers to spraying molten solder (lead-tin alloy) into the solder wave peak required by the design through an electric pump or electromagnetic pump. It can also be formed by injecting nitrogen into the solder pool, so that the pre-installed components The printed board realizes the soldering of the mechanical and electrical connection between the solder end of the component or the pin and the pad of the printed board through the solder wave. Selective welding generally consists of three parts: flux spraying, preheating and welding. Selective soldering adopts a selective flux spraying system, that is, after the flux spray head runs to the designated position according to the pre-programmed instructions, it only sprays flux on the area on the circuit board that needs to be soldered (point spray and line spray), different The spray volume of the area can be adjusted according to the program. Due to the selective spraying, not only the amount of flux is greatly saved compared with wave soldering, but also the pollution to the non-soldering area on the circuit board is avoided.

The fixing jig circuit board in the prior art has poor fixing stability and is difficult to fix, which greatly increases the labor intensity of the operator; the fixing jig circuit board in the prior art cannot be fixed vertically, and the longitudinal position is easily caused during the welding process. The soldering quality is reduced, so there is an urgent need for a wave soldering circuit board fixing fixture to solve the above-mentioned problems.

Utility model content

In view of the deficiencies in the prior art, the purpose of this utility model is to provide a wave soldering circuit board fixing fixture to solve the problems raised in the above background technology. The utility model has reasonable structure, good fixing stability, easy operation and high reliability .

In order to achieve the above object, the utility model is achieved through the following technical solutions: a wave soldering circuit board fixing fixture, including a device main body, a horizontal clamping mechanism and a longitudinal fixing mechanism, the device main body includes a tooling base and a welding hole, The tooling base is a cuboid structure, the welding hole is set on the upper end surface of the tooling base, and the transverse clamping mechanism is arranged in the middle of the upper end surface of the tooling base, and the transverse clamping mechanism includes a motor, a nut seat, a chuck, Card slot, two-way ball screw and fixing slot, the fixing slot is opened in the middle of the upper end surface of the tooling base, the two-way ball screw is assembled in the fixing slot, and the left end of the two-way ball screw is connected with the motor, and the motor It is fixed in the middle of the left end face of the tooling base, the nut seat is installed on the two-way ball screw, the collet is fixed on the upper end face of the nut seat, the card slot is opened on the right end face of the collet, and the longitudinal fixing mechanism It is arranged in the middle of the upper end surface in the card slot. The longitudinal fixing mechanism includes a spring, a guide sleeve, a guide rod and a fixed splint. The guide sleeve is fixed in the middle of the upper end surface in the card slot, and the spring is assembled in the guide sleeve. And the upper end of the spring is connected with the bottom of the guide sleeve, the lower end of the spring is connected with the upper end surface of the guide rod, the guide rod is assembled in the guide sleeve, and the fixed splint is installed on the lower end surface of the guide rod.

Further, there are more than four sets of welding holes, and more than four sets of the welding holes are equidistantly arranged on the upper end surface of the tooling base.

Further, there are two groups of nut seats and collets, the two groups of nut seats are symmetrically installed on the left and right sides of the bidirectional ball screw, the collets are respectively installed on two groups of nut seats, and the two groups of nut seats The nut seats are all connected with the two-way ball screw through the ball nut.

Further, the right end of the bidirectional ball screw is connected to the fixing groove through a bearing.

Further, the cross section of the fixing splint is trapezoidal.

Further, a reinforcing rib is installed inside the guide rod.

Beneficial effects of the utility model: a wave soldering circuit board fixing fixture of the utility model, because the utility model adds a motor, a nut seat, a collet, a card groove, a two-way ball screw and a fixing groove, the design realizes the circuit board The fast fixing of the lateral position of the board is convenient for the operator to operate, and the fixing stability is good, which solves the problem of poor fixing stability of the circuit board of the original fixing fixture and the difficulty of fixing, which greatly improves the labor intensity of the operator.

Because the utility model adds springs, guide sleeves, guide rods and fixing splints, this design realizes the fixing of the longitudinal position of the circuit board, avoids the occurrence of longitudinal displacement of the circuit board, and solves the problem that the original fixing fixture cannot fix the circuit board in the longitudinal direction. During the welding process, it is very easy to cause the longitudinal position to be cheap, which reduces the problem of welding quality.

Because the utility model adds bearings, the design facilitates the rotation of the two-way ball screw, and because the utility model adds reinforcing ribs, the design improves the mechanical strength of the guide rod. The utility model has reasonable structure, good fixing stability, and is easy to operate , high reliability.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

Fig. 1 is a schematic structural view of a wave soldering circuit board fixing fixture of the present invention;

Fig. 2 is a structural schematic diagram of a horizontal clamping mechanism in a wave soldering circuit board fixing fixture of the present invention;

Fig. 3 is a structural schematic diagram of a longitudinal fixing mechanism in a wave soldering circuit board fixing fixture of the present invention;

In the figure: 1-horizontal clamping mechanism, 2-longitudinal fixing mechanism, 3-tooling base, 4-welding hole, 11-motor, 12-nut seat, 13-collet, 14-card slot, 15-two-way ball wire Rod, 16-fixed slot, 21-spring, 22-guide sleeve, 23-guide rod, 24-fixed splint.

detailed description

In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.

Please refer to Figure 1-Figure 3, the utility model provides a technical solution: a wave soldering circuit board fixing fixture, including the main body of the device, a horizontal clamping mechanism 1 and a vertical fixing mechanism 2, the main body of the device includes a tooling base 3 and welding holes 4. The tooling base 3 is a cuboid structure, and the welding holes 4 are opened on the upper end surface of the tooling base 3 .

The horizontal clamping mechanism 1 is arranged in the middle of the upper end surface of the tool base 3. The horizontal clamping mechanism 1 includes a motor 11, a nut seat 12, a collet 13, a card slot 14, a bidirectional ball screw 15 and a fixing groove 16. The fixing groove 16 is set At the middle position of the upper end face of the tooling base 3, the bidirectional ball screw 15 is assembled in the fixing groove 16, and the left end of the bidirectional ball screw 15 is connected with the motor 11, and the motor 11 is fixed at the middle position of the left end face of the tooling base 3, and the nut seat 12 is installed On the two-way ball screw 15, the collet 13 is fixed on the upper end surface of the nut seat 12, and the clamping groove 14 is opened on the right end surface of the collet 13. This design realizes the fast fixing of the lateral position of the circuit board, which is convenient for the operator to operate, and The fixed stability is good.

The longitudinal fixing mechanism 2 is arranged at the middle position of the upper end surface in the draw-in groove 14. The longitudinal fixation mechanism 2 includes a spring 21, a guide sleeve 22, a guide rod 23 and a fixed splint 24. The guide sleeve 22 is fixed at the middle position of the upper end surface in the draw-in groove 14, and the spring 21 is assembled in the guide sleeve 22, and the upper end of the spring 21 is connected with the bottom of the guide sleeve 22, the lower end of the spring 21 is connected with the upper surface of the guide rod 23, the guide rod 23 is assembled in the guide sleeve 22, and the fixed splint 24 is installed under the guide rod 23 On the end face, this design realizes the fixing of the longitudinal position of the circuit board and avoids the occurrence of longitudinal displacement of the circuit board.

There are more than four sets of welding holes 4, and more than four sets of welding holes 4 are equidistantly arranged on the upper end surface of the tooling base 3. There are two sets of nut seats 12 and chucks 13, and two sets of nut seats 12 are symmetrically installed on the two-way ball On the left and right sides of the screw rod 15, the collets 13 are respectively installed on two sets of nut seats 12, and the two sets of nut seats 12 are connected with the two-way ball screw 15 through ball nuts, and the right end of the two-way ball screw 15 passes through the bearing and the fixing groove 16 The cross-section of the fixed splint 24 is trapezoidal, and the guide rod 23 is equipped with reinforcing ribs.

Specific implementation method: When using the utility model, the operator first checks the utility model to see if there is a defect. If there is a defect, it cannot be used. At this time, the maintenance personnel need to be notified to carry out maintenance. If there is no problem, it can be carried out. In use, during use, the operator first places the circuit board on the tooling base 3, then places the left end and the right end of the circuit board in the slot 14 on the chuck 13 respectively, and then the operator runs the single motor 11, and the motor 11 drives the two-way The ball screw 15 rotates in the fixed groove 16, and the ball nut on the nut seat 12 converts the rotational motion of the two-way ball screw 15 into a linear motion, and the two-way ball screw 15 under the nut seat 12 moves linearly, and the two sets of nut seats 12 Simultaneously move toward the central axis of the two-way ball screw 15, the two groups of nut seats 12 move, drive the two groups of collets 13 to move, and then fix the circuit board in the slot 14, thereby realizing the fixing of the lateral position of the circuit board, the collets 13 moves to make the circuit board squeeze the fixed splint 24, and the fixed splint 24 squeezes the guide rod 23 to move in the guide sleeve 22, and the guide rod 23 moves to press the spring 21, so that the spring 21 is elastically deformed, and the spring 21 is under the action of the rebound force The fixing splint 24 is closely attached to the circuit board, thereby realizing the fixing of the longitudinal position of the circuit board, and greatly improving the stability of the circuit board when it is fixed.

The basic principles and main features of the utility model and the advantages of the utility model have been shown and described above. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the utility model The present utility model can be realized in other specific forms without the spirit or essential features. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to be included in the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only includes an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (6)

1. a kind of wave-soldering wiring board stationary fixture, including apparatus main body, horizontal clamping device and longitudinal fixing mechanism, it is special Sign is：Described device main body includes tooling base and welding hole, and the tooling base is rectangular parallelepiped structure, the welding hole It is opened on tooling base upper surface；

The horizontal clamping device is arranged on tooling base upper surface medium position, and the horizontal clamping device includes motor, spiral shell Female seat, chuck, neck, two-way ball screw and fixing groove, the fixing groove are opened in tooling base upper surface medium position, The two-way ball screw is assemblied in fixing groove, and two-way ball screw left end is connected with motor, and the motor is fixed on Tooling base left side medium position, the nut seat are arranged on two-way ball screw, and the chuck is fixed on nut seat On end face, the neck is opened on chuck right side；

The longitudinal fixing mechanism is arranged on upper surface medium position in neck, the longitudinal fixing mechanism include spring, guide pin bushing, Guide rod and strap, the guide pin bushing are fixed on upper surface medium position in neck, and the spring is assemblied in guide pin bushing, and Spring upper end is connected with guide pin bushing bottom, and the lower spring end is connected with guide rod upper surface, and the guide rod, which is assemblied in, leads In set, the strap is arranged on guide rod lower surface.

A kind of 2. wave-soldering wiring board stationary fixture according to claim 1, it is characterised in that：The welding hole is provided with four More than group, four groups of welding holes described above are equidistantly arranged on tooling base upper surface.

A kind of 3. wave-soldering wiring board stationary fixture according to claim 1, it is characterised in that：The nut seat and chuck Two groups are equipped with, nut seat described in two groups is symmetrically mounted at left and right sides of two-way ball screw, and the chuck is separately mounted to two On group nut seat, nut seat described in two groups is connected by ball nut with two-way ball screw.

A kind of 4. wave-soldering wiring board stationary fixture according to claim 1, it is characterised in that：The two-way ball screw Right-hand member is connected by bearing with fixing groove.

A kind of 5. wave-soldering wiring board stationary fixture according to claim 1, it is characterised in that：The strap is transversal Face is trapezoidal.

A kind of 6. wave-soldering wiring board stationary fixture according to claim 1, it is characterised in that：Installed in the guide rod There is reinforcement.