CN220278523U

CN220278523U - PCB board reflow soldering machine convenient to it is fixed

Info

Publication number: CN220278523U
Application number: CN202321276674.5U
Authority: CN
Inventors: 袁乃云; 张建华; 刘婷婷
Original assignee: Ningde Mingrui Intelligent Electronics Co ltd
Current assignee: Ningde Mingrui Intelligent Electronics Co ltd
Priority date: 2023-05-24
Filing date: 2023-05-24
Publication date: 2024-01-02
Anticipated expiration: 2033-05-24

Abstract

The utility model relates to the technical field of reflow welders, in particular to a PCB reflow welder convenient to fix, which comprises a conveyor belt, wherein the outer surface of the conveyor belt is connected with a containing box, the inside of the containing box is connected with a pair of clamping plates distributed left and right, the left end and the right end of the containing box are respectively provided with a connecting plate, the left end and the right end of the containing box are alternately provided with a pair of support columns distributed front and back, the outside of the support columns is provided with springs, and the outer sides of the clamping plates are provided with electromagnets; bolts are arranged on the left side and the right side of the accommodating box. The inside of casing is provided with backup pad and collection device, the bottom surface of roof is connected with jet equipment. The structure of the utility model is provided with the accommodating box capable of fixing the PCB, and the two clamping plates are arranged in the accommodating box, so that the PCB is prevented from deviating from the position on the surface of the driving belt along with the blowing of the air injection device in the reflow soldering process, thereby playing a role in fixing.

Description

PCB board reflow soldering machine convenient to it is fixed

Technical Field

The utility model relates to the technical field of reflow soldering machines, in particular to a PCB reflow soldering machine convenient to fix.

Background

Reflow soldering machines are devices for surface mounting electronic components, and are mainly used for soldering surface mounted components on circuit boards. The reflow soldering machine adopts a heating mode such as hot air or infrared rays and the like to heat the solder to a melting point, so that the solder is connected with a bonding pad or a metal contact on the circuit board, and the connection between the circuit board and the element is realized.

The existing reflow soldering machine comprises a conveying track for conveying the PCB, the conveying track is connected with the output end of the chip mounter, but when the conveying track conveys the PCB, the PCB is directly placed on the conveying track, in the conveying process, the PCB and the conveying track can relatively slide due to vibration of the conveying track or deviation of air or nitrogen sprayed by an air spraying device, and even the conveying track can drop, so that conveying of the PCB is unstable.

Disclosure of Invention

In order to overcome the technical problems, the utility model aims to provide a PCB reflow soldering machine convenient to fix, so as to solve the problems that the PCB and the conveying track can slide relatively and even fall off from the conveying track to cause unstable conveying of the PCB due to vibration of the conveying track or deviation of the PCB caused by air or nitrogen sprayed by an air spraying device in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the PCB reflow soldering machine comprises a first main body, wherein the first main body comprises a base, the upper end of the base is connected with a driving motor, one end of the driving motor is connected with a driving shaft, the other end of the driving shaft is connected with a roller, and two ends of the roller are connected with a conveying frame;

the second main body comprises a conveyor belt, a sensor is arranged at the upper end of the conveyor belt, an accommodating box is connected to the outer surface of the conveyor belt, a pair of clamping plates distributed left and right are connected to the inner part of the accommodating box, connecting plates are arranged at the left end and the right end of the accommodating box, a pair of supporting columns distributed front and back are arranged at the left end and the right end of the accommodating box in a penetrating manner, springs are arranged outside the supporting columns, and electromagnets are arranged at the outer sides of the clamping plates; bolts are arranged on the left side and the right side of the accommodating box;

the air-jet device comprises a third main body, wherein the third main body comprises a shell, a supporting plate and a collecting device are arranged in the shell, a top plate is arranged on the supporting plate, and an air-jet device is connected to the bottom surface of the top plate.

Preferably, the electromagnet is located between holding box and the splint, spring head and tail both ends are elastic connection with splint and holding box respectively, the support column is located between splint and the holding box, support column head and tail both ends are fixed connection with splint and holding box respectively, both ends sliding connection about the support column and the holding box, the holding box is provided with two, the holding box sets up the top at the conveyer belt, and holds the box and carry out fixed connection through the bolt.

Preferably, a rectangular placing groove is formed in the collecting device, and the size of the placing groove is the same as that of the conveying belt.

Preferably, the direction of rotation of the conveyor frame coincides with the conveying direction of the conveyor belt.

Preferably, the magnetic material of the accommodating box is made into a rectangular structure, and the electromagnet can be magnetically connected with the accommodating box.

Preferably, the surface of the shell is provided with a temperature adjusting device and a speed adjusting button of the conveying device, and the air injection device comprises a heating wire and a spray head.

Compared with the prior art, the utility model has the beneficial effects that:

1. the PCB reflow soldering machine convenient to fix is provided with the accommodating box, the inside of the accommodating box is connected with a pair of clamping plates which are distributed left and right, the left end and the right end of the accommodating box are respectively provided with a connecting plate, the left end and the right end of the accommodating box are alternately provided with a pair of supporting columns which are distributed front and back, the outside of each supporting column is provided with springs, and the two clamping plates are arranged, so that the situation that the PCB deviates from the surface of a transmission belt along with the blowing of the air injection device 34 in the reflow soldering process is avoided, and the arrangement of the springs plays a role of damping so that the PCB is not easily crushed when being impacted in the conveying process;

2. this PCB board reflow soldering machine convenient to it is provided with collection device, when the sensor discerns that holding box is located the lower extreme of conveyer belt, the sensor will adjust the magnetic force size of electro-magnet, comes the control splint to reduce to the PCB board holding power, makes the PCB board drop from the inside of holding box, drops inside the standing groove.

Drawings

FIG. 1 is a schematic side view of the structure of the present utility model;

FIG. 2 is a schematic side view of a partial structure of a conveyor belt of the present utility model;

FIG. 3 is a schematic diagram of the left side of the structure of the present utility model;

fig. 4 is a schematic partial structure of a in fig. 3, which is a structural diagram of the present utility model.

In the figure: 1. a first body; 2. a second body; 3. a third body; 11. a base; 12. a driving motor; 14. a drive shaft; 15. a drum; 16. a conveying frame; 21. a conveyor belt; 22. a sensor; 23. a connecting plate; 24. a support column; 25. a spring; 26. an electromagnet; 27. a clamping plate; 28. a housing case; 29. a bolt; 31. a housing; 32. a support plate; 33. a top plate; 34. an air injection device; 35. and a collecting device.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, an embodiment of the present utility model is provided: the first main body 1 and the third main body 3 used in the application are products which can be directly purchased in the market, and the principle and the connection mode are all the prior art well known to the person skilled in the art, so the PCB reflow soldering machine is not described in detail herein, and the PCB reflow soldering machine comprises a first main body 1, wherein the first main body 1 comprises a base 11, the upper end of the base 11 is connected with a driving motor 12, one end of the driving motor 12 is connected with a driving shaft 14, the other end of the driving shaft 14 is connected with a roller 15, and the two ends of the roller 15 are connected with a conveying frame 16;

the second main body 2, the second main body 2 includes the conveyer belt 21, the upper end of the conveyer belt 21 has sensors 22, the outer surface of the conveyer belt 21 connects with and holds the box 28, hold the internal connection of the box 28 to be a pair of clamping plates 27 distributed left and right, hold the box 28 to be provided with the connecting plate 23 both ends left and right, hold the box 28 to be provided with a pair of support columns 24 that are distributed front and back alternately both ends left and right, support column 24 outside has springs 25, the outside of clamping plate 27 is all installed with the electro-magnet 26; bolts 29 are provided on the left and right sides of the accommodation box 28;

third main part 3, third main part 3 includes casing 31, and the inside of casing 31 is provided with backup pad 32 and collection device 35, and the higher authority of backup pad 32 is provided with roof 33, and the bottom surface of roof 33 is connected with jet equipment 34.

Further, the electromagnet 26 is located between the accommodating box 28 and the clamping plate 27, the head end and the tail end of the spring 25 are respectively in elastic connection with the clamping plate 27 and the accommodating box 28, so that the PCB is not easily crushed when being impacted in the conveying process, and the quality of the conveying process of the PCB is improved. The support column 24 is located between splint 27 and holds box 28, support column 24 head and tail both ends are fixed connection with splint 27 and hold box 28 respectively, support column 24 and hold box 28 both ends sliding connection about, hold box 28 and be provided with two, left and right sides splint 27 for the both sides of PCB board all obtain the location, the atress of PCB board is comparatively even on the one hand, can not be because the deformation or the damage phenomenon that only one side atress produced of PCB board, on the other hand PCB board is located more stably under two sets of locating component's effect, further improved the smooth and easy nature of transportation of PCB board, hold box 28 setting in the top of conveyer belt 21, and hold box 28 and carry out fixed connection through bolt 29, connect through bolt 29 makes hold box 28 become more firm, the result of use of device has been guaranteed.

Further, a rectangular placement groove is formed in the collecting device 35, and the size of the placement groove is the same as that of the conveyor belt 21. The setting of standing groove can collect the PCB board that drops from the delivery track, prevents that the PCB board from directly dropping to the organism in causing the interference to the normal operating of organism to the operating stability of organism has been improved.

Further, the rotation direction of the conveying frame 16 is consistent with the conveying direction of the conveying belt 21, so that the PCB board can be conveyed smoothly.

Further, the magnetic material of the accommodating box 28 is made into a rectangular structure, and the electromagnet 26 can be magnetically connected with the accommodating box 28. When the sensor 22 recognizes that the accommodating box 28 is located at the lower end of the conveyor belt 21, the sensor 22 adjusts the magnetic force of the electromagnet 26 to control the clamping plate 27 to reduce the clamping force on the PCB, so that the PCB falls off from the accommodating box 28 and falls into the placing groove.

Further, the surface of the shell 31 is provided with a temperature adjusting device and a speed adjusting button of the conveying device, the temperature adjusting switch is used for setting a temperature set value of a heating zone of the reflow soldering machine, the speed adjusting button of the conveying belt 21 is used for adjusting the running speed of a conveying mechanism of the reflow soldering machine, the air injection device 34 comprises a heating wire and a spray head, and the spray head can conveniently spray the PCB.

The working principle is as follows; firstly, a PCB circuit board is placed between two clamping plates 27 which are positioned in the accommodating box 28 and are on the same horizontal line, a switch of the device is turned on, the left and right conveyor belts 21 are driven to drive under the running of the roller 15, the PCB circuit board is gradually driven to the inside of the shell 31 along with the driving of the conveyor belts 21, the PCB circuit board enters a heating area of a reflow soldering machine, and solder is heated to a melting point through heating stages such as preheating, heating, reflow and the like. When the solder reaches the melting point, the solder connects with pads or metal contacts on the circuit board, thereby effecting connection of the circuit board and the component. After the welding is completed, the accommodating box 28 moves along with the transmission of the conveyor belt 21, the circuit board continues to move to a cooling area of the reflow soldering machine, then air or nitrogen is sprayed into the accommodating box 28 by the nozzle in the air spraying device 34, so that the PCB circuit board in the accommodating box 28 is subjected to reflow soldering, then the PCB circuit board in the accommodating box 28 enters above the collecting device 35 along with the conveyor belt, and when the sensor 22 monitors that the collecting is required, the clamping force on the PCB board is reduced by adjusting the magnetic force of the electromagnet 26 to control the clamping plate 27, so that the PCB circuit board enters the collecting device 35 from the accommodating box 28.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. PCB board reflow soldering machine convenient to it is fixed, characterized in that includes: the automatic feeding device comprises a first main body (1), wherein the first main body (1) comprises a base (11), the upper end of the base (11) is connected with a driving motor (12), one end of the driving motor (12) is connected with a driving shaft (14), the other end of the driving shaft (14) is connected with a rotary drum (15), and two ends of the rotary drum (15) are connected with a conveying frame (16);

the second main body (2), the second main body (2) includes conveyer belt (21), the upper end of conveyer belt (21) is provided with sensor (22), the conveyer belt (21) surface is connected with and holds box (28), the internal connection who holds box (28) has a pair of splint (27) that are left and right distribution, both ends all are provided with connecting plate (23) about holding box (28), both ends are alternated about holding box (28) are provided with a pair of support column (24) that are the front and back distribution, support column (24) outside is provided with spring (25), electro-magnet (26) are all installed in the outside of splint (27); bolts (29) are arranged on the left side and the right side of the accommodating box (28);

the air-jet device comprises a third main body (3), wherein the third main body (3) comprises a shell (31), a supporting plate (32) and a collecting device (35) are arranged in the shell (31), a top plate (33) is arranged on the supporting plate (32), and an air-jet device (34) is connected to the bottom surface of the top plate (33).

2. The PCB reflow soldering machine for facilitating fixation according to claim 1, wherein: the utility model discloses a conveyor belt, including box (21) and support column (28), including box (28) and splint (27), electro-magnet (26) are located between box (28) and splint (27), spring (25) head and tail both ends are elastic connection with splint (27) and box (28) respectively, support column (24) head and tail both ends are fixed connection with splint (27) and box (28) respectively, support column (24) with hold box (28) both ends sliding connection about, box (28) are provided with two, box (28) are held and are set up in the top of conveyer belt (21), and hold box (28) and carry out fixed connection through bolt (29).

3. The PCB reflow soldering machine for facilitating fixation according to claim 2, wherein: rectangular placing grooves are formed in the collecting device (35), and the size of the placing grooves is the same as that of the conveying belt (21).

4. The PCB reflow soldering machine for facilitating fixation according to claim 2, wherein: the rotation direction of the conveying frame (16) is consistent with the conveying direction of the conveying belt (21).

5. The PCB reflow soldering machine for facilitating fixation according to claim 2, wherein: the accommodating box (28) is made of magnetic materials and is of a rectangular structure, and the electromagnet (26) can be magnetically connected with the accommodating box (28).

6. The PCB reflow soldering machine for facilitating fixation according to claim 2, wherein: the surface of the shell (31) is provided with a temperature adjusting device and a speed adjusting button of the conveying device, and the air injection device (34) comprises a heating wire and a spray head.