CN111151837B

CN111151837B - Planar circuit board tinning machine

Info

Publication number: CN111151837B
Application number: CN202010083021.XA
Authority: CN
Inventors: 不公告发明人
Original assignee: Hunan Arya Intelligent Technology Co ltd
Current assignee: Hunan Arya Intelligent Technology Co ltd
Priority date: 2020-02-07
Filing date: 2020-02-07
Publication date: 2021-10-26
Anticipated expiration: 2040-02-07
Also published as: CN111151837A

Abstract

The invention relates to a tinning machine, in particular to a plane type circuit board tinning machine. The technical problem is how to design a plane type circuit board tin coating machine which can replace manual work to tin a circuit board, avoid arm ache, has high working efficiency and can tin an oxide layer after being scraped. A plane type circuit board tinning machine comprises a support, wherein a transverse plate is fixedly connected between the top ends of the support, and a tin melting furnace is arranged on one side, far away from the support, of the transverse plate; and the placing mechanism is arranged on one side of the transverse plate far away from the bracket, is close to the tin melting furnace and is used for placing the circuit board. According to the invention, the molten tin is poured into the tin melting furnace, the circuit board is placed in the placing frame, and the placing frame is pushed to move downwards, so that the pins of the circuit board are contacted with the molten tin to be tinned, people do not need to hold the circuit board for tinning all the time, and the problem that the work efficiency is influenced by the aching pain of the arms is avoided.

Description

Planar circuit board tinning machine

Technical Field

The invention relates to a tinning machine, in particular to a plane type circuit board tinning machine.

Background

The circuit board has the name: the printed circuit board comprises a ceramic circuit board, an alumina ceramic circuit board, an aluminum nitride ceramic circuit board, a PCB board, an aluminum substrate, a high-frequency board, a thick copper board, an impedance board, a PCB, an ultrathin circuit board, a printed circuit board and the like. The circuit board enables the circuit to be miniaturized and visualized, and plays an important role in batch production of fixed circuits and optimization of electric appliance layout. The circuit board can be called as a printed circuit board or a printed circuit board, and the English name of the circuit board is PCB or FPC (flexible printed circuit board is also called as a flexible circuit board and is made of polyimide or polyester film as a base material), which has high reliability and excellent flexibility.

At present, people all hold the circuit board and make the stitch remove to going on tin in the tin liquid, because it is longer to go up the tin time, people hold for a long time always, and the easy ache of arm influences follow-up work efficiency, and holds the in-process of circuit board, and the hand rocks easily and leads to circuit board and tin liquid contact to influence follow-up use to need the people to strike off the back with the oxide layer on tin liquid surface with the instrument earlier, go on tin again, the operation is more troublesome.

Therefore, a planar circuit board tinning machine which can replace manual tinning of a circuit board, avoid arm ache and has high working efficiency and can tin an oxide layer after being scraped is particularly needed to solve the problems in the prior art.

Disclosure of Invention

In order to overcome the circuit board of holding for a long time always, the easy ache of arm influences follow-up work efficiency, and need the people to strike off the oxide layer on tin liquid surface with the instrument earlier, the more troublesome shortcoming of operation, technical problem: the utility model provides a can replace the manual work to go up tin to the circuit board, avoid the arm ache, work efficiency is high, and can strike off the plane formula circuit board machine of going up tin of back tin with the oxide layer.

The technical scheme is as follows: a plane type circuit board tinning machine comprises: the tin melting furnace is arranged on one side, far away from the bracket, of the transverse plate; and the placing mechanism is arranged on one side of the transverse plate far away from the bracket, is close to the tin melting furnace and is used for placing the circuit board.

Preferably, the placing mechanism comprises guide rods, guide sleeves, first springs, synchronizing rods and placing frames, the number of the guide rods is at least two, the guide rods are arranged on one side of the transverse plate far away from the support, the guide sleeves are sleeved on the guide rods in a sliding mode, the first springs are connected between one sides of the guide sleeves facing the transverse plate and one sides of the transverse plate far away from the support, the first springs are sleeved on the guide rods, the placing frames capable of enabling the circuit boards to be placed are arranged between the guide sleeves on two sides, one sides of the guide sleeves facing the transverse plate are arranged in an open mode, the placing frames correspond to the tin melting furnace, and the synchronizing rods are arranged between the end portions of the guide rods on two sides far away from the support.

Preferably, the device also comprises an oxide layer scraping mechanism, the oxide layer scraping mechanism comprises a connecting ring, a first piston cylinder, a communicating pipe, a second piston cylinder, an arc-shaped rod, at least two slide rods, a slide sleeve, a scraper and a connecting rod, the slide rods are arranged at two sides of the tin melting furnace far away from the support, the slide sleeves are sleeved on the slide rods in a sliding manner, the arc-shaped rod is fixedly connected to one side of one slide sleeve, the second piston cylinder is arranged at one side of a transverse plate far away from the support and close to the tin melting furnace, the connecting rod is fixedly connected to a telescopic rod of the second piston cylinder, the end part of the connecting rod close to the slide sleeve is fixedly connected with the end part of the arc-shaped rod far away from the slide sleeve, the first piston cylinder is arranged at one side of the transverse plate close to the second piston cylinder, the communicating pipe is connected between the end part facing the transverse plate and the end part of the second piston cylinder close to the arc-shaped rod, and the communicating pipe is communicated with the first piston cylinder and the second piston cylinder, the connecting ring is sleeved on one side, close to the guide sleeve, of the arc-shaped rod, one side, far away from the placing frame, of the connecting ring is fixedly connected with the telescopic rod of the first piston cylinder, and the scraper plates are installed on the two sides between one sides of the sliding sleeves.

Preferably, the device also comprises a limiting mechanism, the limiting mechanism comprises a fixed sleeve, a rack, a pole piece, a first guide pipe, an electromagnet, a second guide pipe, an armature, a second spring, a movable rod, a tooth block and a third spring, the first guide pipe is fixedly connected to one side, far away from the arc-shaped rod, of the guide sleeve close to the placement frame, the second guide pipe is in sliding penetrating connection with the first guide pipe, the armature is arranged at the end part of the second guide pipe facing the first piston cylinder, the movable rod is in sliding placement in the second guide pipe, the end part, far away from the armature, of the movable rod is fixedly connected with the tooth block, the electromagnet is arranged at the end part of the first guide pipe facing the armature, the second guide pipe penetrates through the electromagnet, the second spring is sleeved in the second guide pipe, one end of the second spring is fixedly connected with one side, facing the armature, of the tooth block, and the other end of the second spring is fixedly connected with one side, facing the armature, the fixed sleeve is installed on one side of a guide rod far away from the support and a guide rod far away from the first piston cylinder, the rack matched with the tooth block is installed on one side of the fixed sleeve, the end part of the rack is fixedly connected with one side of a transverse plate far away from the support, the third spring is sleeved on the movable rod, one end of the third spring is fixedly connected with one side of the tooth block facing the armature, the other end of the third spring is fixedly connected with the end part of a second guide pipe facing the rack, and the pole piece is installed on one side, close to the rack, in the placing frame and electrically connected with the electromagnet in an embedded mode.

As preferred, still including helping the solder flux spraying mechanism, scaling powder spraying mechanism is including storage case, booster pump, electric putter, connecting block, straight row shower nozzle, hose and horizontal pole, electric putter installs in diaphragm one side of keeping away from the guide arm, the horizontal pole install in on electric putter's the telescopic link, the connecting block is installed in horizontal pole one side of keeping away from the arc pole, straight row shower nozzle cross-under in the connecting block, its one end run through in the diaphragm, the storage case is installed in support one side towards the diaphragm, the booster pump install in storage case one side, its with communicate in the storage case, hose connection in the play liquid end of booster pump, its tail end with straight row shower nozzle end connection, just the hose with communicate in the straight row shower nozzle.

The invention has the beneficial effects that: according to the invention, the tin liquid is poured into the tin melting furnace, the circuit board is placed in the placing frame, the placing frame is pushed to move downwards, so that the pins of the circuit board can be in contact with the tin liquid and tin is coated, people do not need to hold the circuit board for coating tin all the time, the problem that the work efficiency is influenced by arm ache is avoided, the oxide layer can be firstly scraped and then coated with tin before the pins are in contact with the tin liquid through the effect of the oxide layer scraping mechanism, the oxide layer is not needed to be scraped and then coated with tin by people, the operation is convenient, and the labor is saved.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is an enlarged schematic view of part a of the present invention.

FIG. 3 is a schematic view of a first partial body structure according to the present invention.

Fig. 4 is a schematic perspective view of the limiting mechanism of the present invention.

FIG. 5 is a schematic view of a second partial body structure according to the present invention.

Description of reference numerals: 1 bracket, 2 tin melting furnace, 3 transverse plate, 4 placing mechanism, 41 guide rod, 42 guide sleeve, 43 first spring, 44 synchronizing rod, 45 placing frame, 5 oxide layer scraping mechanism, 51 connecting ring, 52 first piston cylinder, 53 communicating pipe, 54 second piston cylinder, 55 arc rod, 56 sliding rod, 57 sliding sleeve, 58 scraper, 59 connecting rod, 6 limiting mechanism, 61 fixing sleeve, 62 rack, 63 pole piece, 64 first guide pipe, 65 electromagnet, 66 second guide pipe, 67 armature, 68 second spring, 69 movable rod, 610 tooth block, 611 third spring, 7 scaling powder spraying mechanism, 71 storage box, 72 booster pump, 73 electric push rod, 74 connecting block, 75 straight-line nozzle, 76 hose and 77 transverse rod.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

Example 1

Referring to fig. 1, a planar circuit board tinning machine comprises a support 1, a tin melting furnace 2, a transverse plate 3 and a placing mechanism 4, wherein the transverse plate 3 is fixedly connected between the top ends of the support 1, the tin melting furnace 2 is fixedly connected in the middle of the top of the transverse plate 3, the placing mechanism 4 is arranged on the rear side of the top of the transverse plate 3, and the placing mechanism 4 is matched with the tin melting furnace 2.

The placing mechanism 4 comprises a guide rod 41, a guide sleeve 42, a first spring 43, a synchronizing rod 44 and a placing frame 45, the guide rod 41 is fixedly connected to the left side and the right side of the rear side of the top of the transverse plate 3, the guide sleeve 42 is slidably arranged on the guide rod 41, the placing frame 45 is fixedly connected between the front side faces of the guide sleeves 42 on the left side and the right side, the bottom of the placing frame 45 is arranged in an open mode, the placing frame 45 is located right above the tin melting furnace 2, the first spring 43 is connected between the bottom of the guide sleeve 42 and the top of the transverse plate 3, the first spring 43 is sleeved on the guide rod 41, and the synchronizing rod 44 is fixedly connected between the top ends of the guide rods 41 on the left side and the right side.

At first in operating personnel pours into tin melting furnace 2 with appropriate amount of molten tin, place the circuit board on placement mechanism 4 again, strike off molten tin surface oxide layer, promote placement mechanism 4 downstream again, placement mechanism 4 downstream drives circuit board downstream, circuit board downstream makes the stitch and molten tin contact, stop to promote placement mechanism 4, after the completion of tin goes up the stitch, loosen placement mechanism 4, placement mechanism 4 upstream shift resets, operating personnel can take out the circuit board from placement mechanism 4, so relapse, can be continuous to go up tin to the stitch of circuit board.

When pouring a proper amount of molten tin in melting tin stove 2, can place the circuit board in placing frame 45, the stitch of circuit board passes and places frame 45, operating personnel promotes and places frame 45 downstream, place frame 45 downstream and drive guide pin bushing 42 downstream, first spring 43 compresses, it still drives circuit board downstream to place frame 45 downstream, circuit board downstream makes the stitch move and carries out last tin in the molten tin, place frame 45 and just also move to melting tin stove 2 in, stop promoting and place frame 45. After the stitch tinning of circuit board was accomplished, can loosen and place frame 45, because of the effect of first spring 43, guide pin bushing 42 upward movement drives and places frame 45 rebound, places frame 45 rebound and drives circuit board rebound, and circuit board rebound makes stitch and molten tin break away from, places frame 45 and resets the back, and operating personnel can take off the circuit board from placing in the frame 45.

Example 2

Referring to fig. 1-3, the present embodiment is different from embodiment 1 mainly in that the present embodiment further includes an oxide layer scraping mechanism 5, the oxide layer scraping mechanism 5 includes a connection ring 51, a first piston cylinder 52, an interconnection pipe 53, a second piston cylinder 54, an arc-shaped rod 55, a slide rod 56, a slide sleeve 57, a scraper 58 and a connection rod 59, the slide rod 56 is fixedly connected to the left and right sides of the top of the tin melting furnace 2, the slide sleeve 57 is slidably disposed on the slide rod 56, the scraper 58 capable of scraping the oxide layer is fixedly connected between the inner sides of the slide sleeves 57 on the left and right sides, the arc-shaped rod 55 is fixedly connected to the right side of the slide sleeve 57 on the right side, the connection rod 59 is fixedly connected to the bottom end of the arc-shaped rod 55, the second piston cylinder 54 is mounted to the right side of the top of the cross plate 3, the telescopic rod of the second piston cylinder 54 is fixedly connected to the front end of the connection rod 59, the first piston cylinder 52 is mounted to the rear portion of the top right side of the cross plate 3, the outer side of the guide sleeve 42 on the right side is fixedly connected to the connection ring 51, the rear side surface of the connecting ring 51 is fixedly connected with the telescopic rod of the first piston cylinder 52, an interconnecting pipe 53 is connected between the bottom end of the first piston cylinder 52 and the middle part of the rear side surface of the second piston cylinder 54, and the interconnecting pipe 53 is communicated with the inside of the first piston cylinder 52 and the inside of the second piston cylinder 54.

Initially, a proper amount of liquid is contained in the first piston cylinder 52, when an operator pushes the placing frame 45 to move downwards, the guide sleeve 42 moves downwards to drive the telescopic rod of the first piston cylinder 52 to move downwards, the telescopic rod of the first piston cylinder 52 moves downwards to push the liquid into the communicating pipe 53, the liquid in the communicating pipe 53 is discharged into the second piston cylinder 54, then the liquid pushes the telescopic rod of the second piston cylinder 54 to move forward, the telescopic rod of the second piston cylinder 54 moves forward to drive the connecting rod 59 to move forward, the connecting rod 59 moves forward to drive the arc rod 55 to move forward, the arc rod 55 moves forward to drive the sliding sleeve 57 to move forward, the sliding sleeve 57 moves forward to drive the scraper 58 to move forward, the scraper 58 moves forward to scrape off the oxide layer on the surface of the tin liquid, when the scraping plate 58 moves forward to the maximum stroke, the placing frame 45 drives the circuit board to move into the tin melting furnace 2, so that the pins are contacted with the molten tin for tin coating. After the tinning of the stitch of the circuit board is finished, the loosening placing frame 45 moves upwards for resetting, the right guide sleeve 42 also drives the telescopic rod of the first piston cylinder 52 to move upwards for resetting, the telescopic rod of the first piston cylinder 52 moves upwards to draw back liquid in the second piston cylinder 54 through the communicating pipe 53, along with the liquid being drawn out, the telescopic rod of the second piston cylinder 54 moves backwards to drive the sliding sleeve 57 to move backwards through the arc-shaped rod 55, and the sliding sleeve 57 moves backwards to drive the scraper plate 58 to move backwards for resetting. Therefore, the oxide layer is not required to be scraped by an operator holding a tool, and the operation is more convenient.

Example 3

Referring to fig. 1, 4 and 5, the present embodiment is different from embodiment 1 and embodiment 2 mainly in that the present embodiment further includes a limiting mechanism 6, the limiting mechanism 6 includes a fixed sleeve 61, a rack 62, a pole piece 63, a first conduit 64, an electromagnet 65, a second conduit 66, an armature 67, a second spring 68, a movable rod 69, a tooth block 610 and a third spring 611, the fixed sleeve 61 is fixedly connected to the upper portion of the left guide rod 41, the rack 62 is fixedly connected to the left side surface of the fixed sleeve 61, the bottom end of the rack 62 is fixedly connected to the left rear portion of the top of the transverse plate 3, the first conduit 64 is fixedly connected to the middle portion of the front side surface of the left guide sleeve 42, the second conduit 66 is slidably arranged in the first conduit 64, the armature 67 is fixedly connected to the right end of the second conduit 66, the electromagnet 65 is fixedly connected to the right end of the first conduit 64, the second conduit 66 passes through the electromagnet 65, and the second spring 68 is connected between the right side surface of the electromagnet 65 and the left side surface of the armature 67, the second spring 68 is sleeved on the second guide pipe 66, a movable rod 69 is arranged at the left part in the second guide pipe 66 in a sliding manner, a tooth block 610 is fixedly connected at the left end of the movable rod 69, the tooth block 610 is matched with the rack 62, a third spring 611 is connected between the right side surface of the tooth block 610 and the left end of the second guide pipe 66, the third spring 611 is sleeved on the movable rod 69, pole pieces 63 are symmetrically and fixedly connected at the rear part of the left side surface in the placing frame 45, and the pole pieces 63 are in circuit connection with the electromagnet 65.

Still include and help welding flux spraying mechanism 7, welding flux spraying mechanism 7 is including storage tank 71, the booster pump 72, electric putter 73, connecting block 74, straight row shower nozzle 75, hose 76 and horizontal pole 77, electric putter 73 is installed to 3 top front sides of diaphragm, the rigid coupling has horizontal pole 77 on electric putter 73's the telescopic link, horizontal pole 77 right part rigid coupling has connecting block 74, embedded being connected with straight row shower nozzle 75 on connecting block 74, straight row shower nozzle 75 is located places frame 45 below, storage tank 71 is installed on the left side of bottom in the support 1, booster pump 72 is installed to storage tank 71 front side left part, booster pump 72 and storage tank 71 in-connection, the play liquid end of booster pump 72 is connected with hose 76, hose 76 tail end and straight row shower nozzle 75 bottom are connected rather than the intercommunication.

When the placing frame 45 drives the circuit board to move downwards, the placing frame 45 also drives the pole piece 63 to move downwards, when the pole piece 63 moves downwards to be contacted with molten tin, the pole piece 63 is electrified to enable the electromagnet 65 to operate, the electromagnet 65 operates to drive the armature 67 to move leftwards, the second spring 68 is compressed, the armature 67 moves leftwards to drive the tooth block 610 to move leftwards, when the tooth block 610 moves leftwards to be meshed with the rack 62, the tooth block 610 is always meshed with the rack 62 under the action of the third spring 611, the tooth block 610 is matched with the rack 62 to fix the armature 67, and the placing frame 45 is also fixed, so that the situation that the pins of the circuit board are contacted with the molten tin to be tinned is also explained. After the tin on the pin of the circuit board is finished, the placing frame 45 is loosened to move upwards for resetting, the pole piece 63 also moves upwards to be not in contact with molten tin for power failure, the electromagnet 65 is powered off, the armature 67 moves rightwards under the action of the second spring 68 to drive the tooth block 610 to move rightwards for resetting, and the tooth block 610 is separated from the rack 62. Therefore, the phenomenon that the operator pushes the placing frame 45 to move downwards to affect the tin feeding process due to overlarge stroke can be avoided.

Firstly, an operator pours soldering flux into the storage box 71, when a circuit board is placed in the placement frame 45, the booster pump 72 can be started, the booster pump 72 pumps the soldering flux into the hose 76, the soldering flux in the hose 76 is discharged into the straight-line spray head 75, the straight-line spray head 75 sprays the soldering flux on pins of the circuit board, the electric push rod 73 is started, the telescopic rod of the electric push rod 73 moves leftwards to drive the cross rod 77 to move leftwards, the cross rod 77 moves leftwards to drive the connecting block 74 to move leftwards, the connecting block 74 moves leftwards to drive the straight-line spray head 75 to move leftwards, and the straight-line spray head 75 moves leftwards to comprehensively spray the soldering flux on the pins of the circuit board. When the straight-line nozzle 75 moves to the maximum stroke leftwards, the electric push rod 73 and the booster pump 72 are closed, and then the pins of the circuit board can be tinned. After the stitch of the circuit board is tinned, and the placing frame 45 is reset, the telescopic rod of the electric push rod 73 can be started to shorten and reset, the telescopic rod of the electric push rod 73 moves rightwards to drive the cross rod 77 to move rightwards, the cross rod 77 moves rightwards to drive the straight-line spray head 75 to move rightwards through the connecting block 74 to reset, and the electric push rod 73 is closed. Therefore, the manual spraying of the soldering flux by operators is not needed, and labor is saved.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A plane type circuit board tinning machine is characterized by comprising:

the tin melting furnace comprises a bracket (1), wherein a transverse plate (3) is fixedly connected between the top ends of the bracket (1), and a tin melting furnace (2) is arranged on one side, far away from the bracket (1), of the transverse plate (3);

the placing mechanism (4) is arranged on one side of the transverse plate (3) far away from the bracket (1) and close to the tin melting furnace (2) and is used for placing the circuit board;

the placing mechanism (4) comprises guide rods (41), a guide sleeve (42), a first spring (43), a synchronizing rod (44) and a placing frame (45), the number of the guide rods (41) is at least two, which is arranged on one side of a transverse plate (3) far away from the bracket (1), the guide sleeve (42) is sleeved on the guide rod (41) in a sliding way, a first spring (43) is connected between one side of the transverse plate (3) and one side of the transverse plate (3) far away from the bracket (1), the first spring (43) is sleeved on the guide rod (41), the placing frame (45) for placing the circuit board is arranged between the guide sleeves (42) at two sides, one side of the horizontal plate (3) is open, the placing frame (45) corresponds to the tin melting furnace (2), the synchronous rod (44) is arranged between the end parts of the guide rods (41) at two sides far away from the bracket (1);

the device is characterized by further comprising an oxide layer scraping mechanism (5), wherein the oxide layer scraping mechanism (5) comprises a connecting ring (51), a first piston cylinder (52), a communicating pipe (53), a second piston cylinder (54), arc-shaped rods (55), sliding rods (56), sliding sleeves (57), scraping plates (58) and connecting rods (59), the number of the sliding rods (56) is at least two, the sliding rods (56) are installed on two sides of the tin melting furnace (2) far away from the support (1), the sliding sleeves (57) are sleeved on the sliding rods (56) in a sliding mode, one side of one sliding sleeve (57) is fixedly connected with the arc-shaped rod (55), the second piston cylinder (54) is installed on one side of a transverse plate (3) far away from the support (1) and close to the tin melting furnace (2), the connecting rod (59) is fixedly connected onto a telescopic rod of the second piston cylinder, and the end part, close to the sliding sleeve (57), of the connecting rod (59) is fixedly connected with the end part of the arc-shaped rod (55) far away from the sliding sleeve (57), the first piston cylinder (52) is installed on one side of a transverse plate (3) close to a second piston cylinder (54), an interconnecting pipe (53) is connected between the end portion, facing the transverse plate (3), of the first piston cylinder and the end portion, close to the arc-shaped rod (55), of the second piston cylinder (54), the interconnecting pipe (53) is communicated with the first piston cylinder (52) and the second piston cylinder (54), the connecting ring (51) is sleeved on one side of a guide sleeve (42) close to the arc-shaped rod (55), one side, far away from the placing frame (45), of the connecting ring is fixedly connected with an expansion rod of the first piston cylinder (52), and the scraping plate (58) is installed on two sides of one side of the slide sleeve (57).

2. The plane type circuit board tinning machine according to claim 1, characterized in that the machine further comprises a limiting mechanism (6), the limiting mechanism (6) comprises a fixed sleeve (61), a rack (62), a pole piece (63), a first conduit (64), an electromagnet (65), a second conduit (66), an armature (67), a second spring (68), a movable rod (69), a tooth block (610) and a third spring (611), the first conduit (64) is fixedly connected to one side of the guide sleeve (42) far away from the arc-shaped rod (55) and close to the placing frame (45), the second conduit (66) is slidably connected in the first conduit (64), the armature (67) is installed at the end of the second conduit (66) facing the first piston cylinder (52), the movable rod (69) is slidably placed in the second conduit (66), and the end far away from the armature (67) is fixedly connected with the tooth block (610), the electromagnet (65) is arranged at the end part of a first guide pipe (64) facing to an armature (67), the second guide pipe (66) penetrates through the electromagnet (65), a second spring (68) is sleeved in the second guide pipe (66), one end of the second spring is fixedly connected with one side of the armature (67) facing to the tooth block (610), the other end of the second spring is fixedly connected with one side of the electromagnet (65) facing to the armature (67), a fixed sleeve (61) is arranged at one side of a guide rod (41) far away from the bracket (1) and a first piston cylinder (52), a rack (62) matched with the tooth block (610) is arranged at one side of the fixed sleeve (61), the end part of the fixed sleeve is fixedly connected with one side of a transverse plate (3) far away from the bracket (1), a third spring (611) is sleeved on the movable rod (69), and one end of the third spring is fixedly connected with one side of the tooth block (610) facing to the armature (67), the other end of the pole piece is fixedly connected with the end part of a second guide pipe (66) facing the rack (62), and the pole piece (63) is embedded in one side of the placing frame (45) close to the rack (62) and is electrically connected with the electromagnet (65).

3. The planar circuit board tinning machine according to claim 2, characterized in that the planar circuit board tinning machine further comprises a flux spraying mechanism (7), the flux spraying mechanism (7) comprises a storage box (71), a booster pump (72), an electric push rod (73), a connecting block (74), a straight-line spray head (75), a hose (76) and a cross rod (77), the electric push rod (73) is installed on one side of the transverse plate (3) far away from the guide rod (41), the cross rod (77) is installed on an expansion rod of the electric push rod (73), the connecting block (74) is installed on one side of the cross rod (77) far away from the arc-shaped rod (55), the straight-line spray head (75) is connected to the connecting block (74) in a penetrating manner, one end of the straight-line spray head penetrates through the transverse plate (3), the storage box (71) is installed on one side of the bracket (1) facing the transverse plate (3), and the booster pump (72) is installed on one side of the storage box (71), the inner part of the storage box (71) is communicated with the inner part of the storage box, the hose (76) is connected with the liquid outlet end of the booster pump (72), the tail end of the hose is connected with the end part of the direct discharging spray head (75), and the hose (76) is communicated with the inner part of the direct discharging spray head (75).