CN212665124U

CN212665124U - Crest welder

Info

Publication number: CN212665124U
Application number: CN202021320477.5U
Authority: CN
Inventors: 陈新; 林晓飞; 姚奉娇; 辛文耀
Original assignee: Tian Xun Electronics Yantai Co ltd
Current assignee: Tian Xun Electronics Yantai Co ltd
Priority date: 2020-07-08
Filing date: 2020-07-08
Publication date: 2021-03-09
Anticipated expiration: 2030-07-08

Abstract

The application relates to a crest welder, comprising a base; two parallel conveying chains are arranged on the base; a driving motor for driving the conveying chain to move is fixedly arranged on the base; the conveying chain is connected with a positioning block; a fixing frame with the lower end surface abutting against the upper end surface of the positioning block is arranged between the two conveying chains; the fixed frame is a frame structure consisting of two cross beams and two longitudinal beams; a clamping rod is connected between the two cross beams in a sliding manner; a first flanging is fixedly arranged on the side surface of the longitudinal beam; and two side surfaces of the clamping rod are respectively fixedly provided with a second flanging opposite to the first flanging. This application has the effect of the weldment work of suitable not unidimensional circuit board.

Description

Crest welder

Technical Field

The application relates to the field of machining, in particular to a crest welder.

Background

At present, wave soldering refers to the process of jetting molten soft solder (generally lead-tin alloy) into a solder wave with design requirements by an electric pump or an electromagnetic pump, or injecting nitrogen into a solder pool to make a printed board with components mounted in advance pass through the solder wave, so as to realize the soft soldering between the soldering end or pin of the components and the pad of the printed board.

The general wave crest welder comprises a heating system, a welding system, a cooling system, a conveying system and a related electronic control system, the structure is complex, a circuit board is placed on the conveying system during welding, then the circuit board is welded through the welding system, and finally the circuit board is output after being cooled through the cooling system.

In view of the above related technologies, the applicant believes that the conveying ports for conveying the circuit boards are generally large, and are suitable for welding the circuit boards with large sizes, and for the circuit boards with small sizes, manual welding is often required, and efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem of inefficiency among the circuit board welding process, this application provides a wave-soldering machine.

The application provides a crest welder adopts following technical scheme:

a crest welder comprises a base; two parallel conveying chains are arranged on the base; a driving motor for driving the conveying chain to move is fixedly arranged on the base; the conveying chain is connected with a positioning block; a fixing frame with the lower end surface abutting against the upper end surface of the positioning block is arranged between the two conveying chains; the fixed frame is a frame structure consisting of two cross beams and two longitudinal beams; a clamping rod is connected between the two cross beams in a sliding manner; a first flanging is fixedly arranged on the side surface of the longitudinal beam; and two side surfaces of the clamping rod are respectively fixedly provided with a second flanging opposite to the first flanging.

Through adopting above-mentioned technical scheme, during the use, at first along the length direction slip clamping rod of crossbeam, will press from both sides clamping rod and slide to suitable position department according to the circuit board size. And then the lower end face of the circuit board is abutted against the upper end faces of the first flanging and the second flanging, and the two ends of the circuit board are abutted against the space between the clamping rod and the longitudinal beam to complete the fixation of the circuit board. And finally, placing the fixing frame between the positioning blocks on the two conveying chains, starting the driving motor, driving the conveying chains to move, and welding the circuit board.

Preferably, the two ends of the clamping rod are respectively and fixedly provided with a connecting part buckled on the upper end surface of the cross beam; a group of mounting holes are formed in the cross beam; a positioning pin is inserted in the connecting part; the locating pin passes through the connecting part and the end part is positioned in the mounting hole.

Through adopting above-mentioned technical scheme, slide to suitable position after pressing from both sides tight pole, pass the locating pin and press from both sides tight pole and make the tip of locating pin insert and locate in the mounting hole, accomplish the fixed to pressing from both sides tight pole, prevent that the tight pole of clamp from taking place to rock among the welding process, influence the welding effect.

Preferably, sliding grooves are formed in the two ends, located on the first flanging, of the longitudinal beam; a compression spring is fixedly arranged in the chute; a pressing block is fixedly arranged at one end of the compression spring, which is far away from the sliding chute; the pressing block is arranged in parallel to the longitudinal beam.

Through adopting above-mentioned technical scheme, when the circuit board butt when pressing from both sides between tight pole and the longeron, can extrude the briquetting, compression spring compression deformation this moment can give a resilience force of circuit board because it recovers deformation for the circuit board is only fixed between tight pole and the longeron, guarantees the stability of circuit board among the welding process.

Preferably, the plane of the lower surface of the cross beam is lower than the plane of the lower surfaces of the longitudinal beam and the clamping rod.

By adopting the technical scheme, when the support falls off from the wave crest welder carelessly, the circuit board on the support can be supported and protected due to the lower plane of the lower surface of the cross beam, and the circuit board is prevented from being in direct contact with the base, so that the electronic element on the circuit board is prevented from being damaged.

Preferably, the positioning block comprises a hook and a hook; the hook comprises a fixed surface and a connecting surface which is vertical to the fixed surface; the fixing surface is provided with a fixing hole for fixing the hook on the conveying chain; a strip-shaped groove is vertically formed in the connecting surface; and a clamping piece detachably connected in the strip-shaped groove is fixedly arranged on the unhook.

By adopting the technical scheme, when the hook is used, the fixing piece firstly penetrates through the fixing hole, so that the hook is fixed on the conveying chain. Then insert the card finished piece and locate the bar inslot, accomplish the installation to the unhook, when the unhook damages, will block finished piece and bar groove separation, the unhook from the couple pull down change can, need not to change whole locating piece, played the technological effect of saving the cost.

Preferably, the upper end of the strip-shaped groove is provided with a through groove communicated with the strip-shaped groove; the inner diameter of the through groove is larger than the width of the notch of the strip-shaped groove; the clamping piece comprises a head part and a neck part; the outer diameter of the head part is smaller than the inner diameter of the through groove; the outer diameter of the neck is smaller than the inner diameter of the strip-shaped groove.

Through adopting above-mentioned technical scheme, to block the head of finished piece and pass logical groove, then remove the card finished piece along the length direction in bar groove, when the outer anchor ring of neck and the tip counterbalance of bar groove bump, can accomplish the installation operation to the unhook, it is easy and simple to handle.

Preferably, one end of the unhooking part, which is far away from the hook, is fixedly provided with an abutting part; the side surface of the longitudinal beam is fixedly provided with an inserting strip; the lower end face of the cutting abuts against the upper end face of the abutting portion.

Through adopting above-mentioned technical scheme, butt portion plays certain supporting role, will insert the strip and support and bump on the butt portion of unhook during the installation, can be to the realization fixed to the mount.

Preferably, the upper end surface of the abutting part protrudes and extends in a direction away from the abutting part body to form an arc shape; the lower end face of the cutting is provided with a groove matched with the arc shape.

Through adopting above-mentioned technical scheme, through the cooperation of circular-arc and recess, can guarantee the stability of mount in the welding process, prevent that the mount from droing from the conveying chain, influence welding effect.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the clamping device is used, the clamping rod is firstly slid along the length direction of the cross beam, and the clamping rod is slid to a proper position according to the size of a circuit board. And then the lower end face of the circuit board is abutted against the upper end faces of the first flanging and the second flanging, and the two ends of the circuit board are abutted against the space between the clamping rod and the longitudinal beam to complete the fixation of the circuit board. Finally, the fixing frame is placed between the positioning blocks on the two conveying chains, and the driving motor is started to drive the conveying chains to move so as to weld the circuit board;

2. when the circuit board abuts against the clamping rod and the longitudinal beam, the pressing block can be extruded, the pressing spring is compressed and deformed, and the circuit board can be only fixed between the clamping rod and the longitudinal beam due to resilience force of the pressing spring after the pressing spring recovers and deforms, so that the stability of the circuit board in the welding process is ensured;

3. the head of the clamping piece on the unhook penetrates through the through groove, then the clamping piece is moved along the length direction of the strip-shaped groove, and when the outer annular surface of the neck is abutted against the end part of the strip-shaped groove, the mounting operation of the unhook can be completed, and the operation is simple and convenient. After the unhook damages, with the unhook follow the couple dismantle change can, need not to change whole locating piece.

Drawings

FIG. 1 is a schematic view of an overall structure of a wave soldering machine;

FIG. 2 is a schematic view showing the structure of the fastening frame in the embodiment;

FIG. 3 is a schematic structural diagram of a highlighted positioning block in an embodiment.

Description of reference numerals: 1. a base; 2. a conveyor chain; 3. a drive motor; 4. positioning blocks; 41. hooking; 411. a fixed surface; 4111. a fixing hole; 412. a connecting surface; 4121. a strip-shaped groove; 4122. a through groove; 42. unhooking; 421. clamping the workpiece; 4211. a head portion; 4212. a neck portion; 422. an abutting portion; 4221. arc shape; 5. a fixed mount; 51. a cross beam; 511. mounting holes; 52. a stringer; 521. flanging one; 5211. a chute; 5212. a compression spring; 5213. briquetting; 522. cutting; 5221. a groove; 6. a clamping lever; 61. flanging two; 7. a connecting portion; 8. and a positioning pin.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a crest welder. Referring to fig. 1, the device comprises a base 1, two parallel conveying chains 2 are fixedly arranged on the base 1 along the length direction of the base, and the plane of the conveying chains 2 is perpendicular to the base 1. The base 1 is fixedly provided with a driving motor 3 for driving the conveying chain 2 to move. A plurality of positioning blocks 4 are connected to the two conveying chains 2, and a fixing frame 5 is arranged between the two conveying chains 2, wherein the lower end face of the fixing frame is abutted against the upper end face of each positioning block 4. During operation, the circuit board to be welded is placed on the fixing frame 5, the driving motor 3 is started, the circuit board on the fixing frame 5 is driven to move through the conveying chain 2, and when the circuit board moves to the wave crest structure, welding operation can be conducted.

Referring to fig. 2, the fixing frame 5 is a frame structure formed by connecting two cross beams 51 and two longitudinal beams 52 end to end, and a clamping rod 6 extending along the longitudinal direction of the longitudinal beam 52 is slidably connected between the two cross beams 51. The two ends of the clamping rod 6 are respectively and fixedly provided with a connecting part 7 buckled on the upper end surface of the cross beam 51, the cross beam 51 is provided with a group of mounting holes 511 along the length direction, the connecting part 7 is provided with a positioning pin 8 in a penetrating way, and the end part of the positioning pin 8 is positioned in the mounting holes 511.

Referring to fig. 2, the two longitudinal beams 52 are respectively and fixedly provided with a first flanging 521 on the side opposite to the frame structure, and the two clamping rods 6 are respectively and fixedly provided with a second flanging 61 opposite to the first flanging 521 on the side. Sliding the clamping rod 6 to a proper position according to the size of the circuit board, and inserting the positioning pin 8 on the connecting part 7; and then the circuit board is fixed between the clamping rod 6 and the longitudinal beam 52, and two ends of the lower end face of the circuit board respectively abut against the first flanging 521 and the second flanging 61, so that the circuit board can be fixed. In order to prevent the fixed frame 5 from falling off in the working process and causing the collision between the circuit board and the base 1, the plane of the lower surface of the cross beam 51 is lower than the planes of the lower surfaces of the longitudinal beam 52 and the clamping rod 6 respectively, and when the fixed frame 5 falls off, the cross beam 51 can support the fixed frame 5 to protect the circuit board.

Referring to fig. 2, the longitudinal beam 52 is provided with sliding grooves 5211 at two ends of the first turned-over edge 521, a compression spring 5212 is fixedly arranged in the sliding groove 5211, and a pressing block 5213 parallel to the longitudinal beam 52 is fixedly arranged at the other end of the compression spring 5212. After the circuit board is fixed between the longitudinal beam 52 and the clamping rod 6, the circuit board can extrude the pressing block 5213 and the pressing spring 5212, and the pressing spring 5212 recovers to deform to generate resilience force, so that the circuit board is only abutted between the longitudinal beam 52 and the clamping rod 6, and the stability of the circuit board in the working process is improved.

Referring to fig. 1 and 3, as the operating time of the wave soldering machine is prolonged, the positioning block 4 is damaged, and in order to facilitate the replacement of the positioning block 4 and reduce the processing cost, the positioning block 4 comprises a hook 41 and a unhook 42 connected to the hook 41. The hook 41 includes a fixing surface 411 and a connecting surface 412 perpendicular to the fixing surface 411, the fixing surface 411 is provided with a plurality of fixing holes 4111 for fixedly mounting the hook 41 on the conveying chain 2, and after the hook 41 is mounted on the conveying chain 2, the connecting surface 412 is attached to one side surface of the conveying chain 2.

Referring to fig. 3, in order to facilitate the detachment and installation operations of the unhooking device 42, a strip-shaped groove 4121 is vertically formed on the connection surface 412, and a circular through groove 4122 communicated with the strip-shaped groove 4121 is formed at an end portion of the strip-shaped groove 4121. The disengaging hook 42 is vertically and fixedly provided with a clamping piece 421, the clamping piece 421 comprises a head portion 4211 and a neck portion 4212 which are respectively matched with the strip-shaped groove 4121 and the through groove 4122, the outer diameter of the head portion 4211 is smaller than the inner diameter of the through groove 4122, and the diameter of the cross section of the neck portion 4212 is smaller than the width of the groove opening of the strip-shaped groove 4121. The head 4211 of the locking member 421 passes through the through groove 4122 and slides along the length direction of the strip groove 4121 to the end of the strip groove 4121, so as to complete the installation of the unhooking device 42. When the positioning block 4 is damaged, the unhooking hook 42 is detached from the hook 41 for replacement, so that the production cost is reduced.

Referring to fig. 2 and 3, an abutting portion 422 is vertically and fixedly disposed on a side of the unhooking portion 42 away from the hook 41, and an inserting strip 522 having a lower end surface abutting against an upper end surface of the abutting portion 422 is fixedly disposed on a side of the longitudinal beam 52 away from the frame structure. In order to improve the stability of the fixing frame 5 after being placed on the positioning block 4, the upper surface of the abutting portion 422 protrudes in a direction away from the main body of the abutting portion 422 to form an arc shape 4221, and the lower surface of the insert 522 is provided with a groove 5221 matched with the arc shape 4221.

The implementation principle of the wave crest welder in the embodiment of the application is as follows: firstly, fixing pieces such as bolts are inserted through the fixing holes 4111, so that the hooks 41 are mounted on the conveying chain 2; then, the locking member 421 is locked in the bar groove 4121, and the installation operation of the positioning block 4 is completed. Then, the fixing frame 5 is placed on the positioning block 4 and abutted between the two conveying chains 2. Finally, sliding the clamping rod 6 along the length direction of the cross beam 51 to a position suitable for installation, and fixing the circuit board between the longitudinal beam 52 and the clamping rod 6; and starting the driving motor 3 to drive the transmission chain 2 to move, so as to realize the welding operation of the circuit board.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A wave soldering machine comprises a base (1); the method is characterized in that: two parallel conveying chains (2) are arranged on the base (1); a driving motor (3) for driving the conveying chain (2) to move is fixedly arranged on the base (1); the conveying chain (2) is connected with a positioning block (4); a fixing frame (5) with the lower end face abutting against the upper end face of the positioning block (4) is arranged between the two conveying chains (2); the fixed frame (5) is a frame structure consisting of two cross beams (51) and two longitudinal beams (52); a clamping rod (6) is connected between the two cross beams (51) in a sliding manner; a first flanging (521) is fixedly arranged on the side surface of the longitudinal beam (52); and two side surfaces of the clamping rod (6) are respectively fixedly provided with a second flanging (61) opposite to the first flanging (521).

2. A wave soldering machine according to claim 1 wherein: two ends of the clamping rod (6) are respectively and fixedly provided with a connecting part (7) buckled on the upper end surface of the cross beam (51); a group of mounting holes (511) are formed in the cross beam (51); a positioning pin (8) is inserted into the connecting part (7); the positioning pin (8) penetrates through the connecting part (7) and the end part of the positioning pin is positioned in the mounting hole (511).

3. A wave soldering machine according to claim 1 wherein: sliding grooves (5211) are formed in the two ends, located on the first flanging (521), of the longitudinal beam (52); a compression spring (5212) is fixedly arranged in the chute (5211); a pressing block (5213) is fixedly arranged at one end of the pressing spring (5212) far away from the chute (5211); the pressing block (5213) is arranged parallel to the longitudinal beam (52).

4. A wave soldering machine according to claim 1 wherein: the planes of the lower surfaces of the cross beams (51) are lower than the planes of the lower surfaces of the longitudinal beams (52) and the clamping rods (6).

5. A wave soldering machine according to claim 1 wherein: the positioning block (4) comprises a hook (41) and a unhooking (42); the hook (41) comprises a fixing surface (411) and a connecting surface (412) which is perpendicular to the fixing surface (411); the fixing surface (411) is provided with a fixing hole (4111) for fixing the hook (41) on the conveying chain (2); a strip-shaped groove (4121) is vertically formed in the connecting surface (412); the unhooking part (42) is fixedly provided with a clamping part (421) which is detachably connected in the strip-shaped groove (4121).

6. A wave soldering machine according to claim 5, wherein: the upper end of the strip-shaped groove (4121) is provided with a through groove (4122) communicated with the strip-shaped groove (4121); the inner diameter of the through groove (4122) is larger than the width of the notch of the strip-shaped groove (4121); the card member (421) comprises a head portion (4211) and a neck portion (4212); the outer diameter of the head (4211) is smaller than the inner diameter of the through groove (4122); the outer diameter of the neck portion (4212) is smaller than the inner diameter of the strip-shaped groove (4121).

7. A wave soldering machine according to claim 5, wherein: one end of the unhooking part (42) far away from the hook (41) is fixedly provided with an abutting part (422); an inserting strip (522) is fixedly arranged on the side surface of the longitudinal beam (52); the lower end face of the inserting strip (522) is abutted against the upper end face of the abutting part (422).

8. The wave soldering machine of claim 7, wherein: the upper end surface of the abutting part (422) protrudes and extends in a direction away from the main body of the abutting part (422) to form an arc shape (4221); the lower end surface of the inserting strip (522) is provided with a groove (5221) matched with the arc shape (4221).