CN114769777A

CN114769777A - Positioning welding device for electronic component

Info

Publication number: CN114769777A
Application number: CN202210271872.6A
Authority: CN
Inventors: 王景焕; 倪瑛
Original assignee: Nanjing Vocational University of Industry Technology NUIT
Current assignee: Nanjing Vocational University of Industry Technology NUIT
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2022-07-22

Abstract

The invention discloses a positioning welding device of an electronic element, which relates to the field of mechanical electronics and comprises a functional block, a feeding device, a driving device, a cleaning device and a rack, wherein a central groove is formed in the functional block; the invention organically combines the bending and inserting processes, leads are vertically upward after the bending process is finished, and then the inserting operation can be directly carried out, thereby eliminating the step of adjusting the positions of the leads and improving the accuracy of inserting the leads into a circuit board; the up-and-down movement of the functional block and the linkage processing of the feeding push block realize automatic preparation feeding, save partial feeding time and improve the welding efficiency; the cleaning device utilizes the displacement change of the fixing plate as power to clean the position after welding, thereby avoiding the pollution of residual soldering flux and rosin to the circuit board.

Description

Positioning welding device for electronic component

Technical Field

The invention relates to the field of mechanical electronics, in particular to a positioning welding device for electronic components.

Background

Electronic component is some circuit original paper commonly used in electrical equipment, and this type of electronic component has cuboid and two kinds of cylindrical structures usually, and common some NULL is the cuboid structure mostly, and this type of electronic component is comparatively easy when the welding, adopts manipulator cooperation sucking disc to absorb usually, then welds on pegging graft the circuit board.

And some electronic components of cylindrical structure adopt the bender to bend the pin of a batch of electronic components in unison before pegging graft usually, then peg graft it to the circuit board, because the electronic component of cylindrical structure hardly adopts the sucking disc to absorb, so to this type of electronic component's grafting work usually adopt the clamping jaw to press from both sides and get electronic component then peg graft it to the circuit board, but need adjust electronic component's pin to perpendicular with the circuit board when pegging graft after buckling the pin again, and can peg graft on corresponding the electricity connection hole, this installation positioning device that leads to some electronic component now appears the position deviation when pegging graft electronic component, lead to the grafting mistake, influence the development of welding work.

In addition, when the electronic components are welded each time, the manipulator is required to clamp new electronic components again for welding, the preparation time for welding is long, and the overall efficiency is affected.

In addition, certain soldering flux and rosin can be remained on the welded circuit board, and if the circuit board cannot be cleaned in time, the circuit board can be polluted to a certain extent.

Disclosure of Invention

The present invention is directed to a positioning welding device for electronic components, which solves the above-mentioned problems of the prior art.

A positioning welding device for electronic elements comprises a function block, a feeding device, a driving device, a cleaning device and a rack, wherein a central groove for placing the electronic elements is formed in the function block, pin grooves for accommodating pins are formed in two sides of the central groove, a slidable clamping device is arranged in the central groove and used for clamping and fixing the electronic elements, the clamping device moves downwards under the condition of clamping the electronic elements to bend the pins of the electronic elements, then the clamped electronic elements extend out of the function block, and the driving device is used for driving the function block to move upwards;

the feeding device is arranged on the rack, the operation of the feeding device is linked with the up-and-down movement of the functional block, and when the functional block moves down to the lowest point, a new electronic element is placed in the central groove;

the cleaning device converts the distance change of the functional block relative to the rack into the cleaning of the circuit board in the process of moving the functional block downwards.

Preferably, drive arrangement includes sharp module and fixed plate, the sharp module is in vertical state and is equipped with in the frame, the slip table fixed connection of fixed plate and sharp module.

Preferably, clamping device includes the center block, center block sliding connection is in the inside of function block, be equipped with a horizontal electro-magnet of placing in the center block, the four corners of lateral wall all is equipped with a traveller about the center block, the left and right sides of center block respectively be equipped with one with traveller sliding connection's clamp splice, the cover is equipped with spring one on four travelers of below, spring one is located between clamp splice and the center block, it has the iron sheet to embed with the corresponding position of electro-magnet on the clamp splice, the top of clamp splice is equipped with down the briquetting, and its below is equipped with bearing structure, center block fixed connection is at electric putter's output, electric putter and fixed plate fixed connection.

Preferably, loading attachment includes guide block, material loading ejector pad, rack one, rack two and gear, mount fixed connection in guide block and the frame, be equipped with the material loading ejector pad that links up between guide block and the function block, material loading ejector pad sliding connection is on the lateral wall of function block, the top of guide block, the top of material loading ejector pad and the top of function block all are equipped with the slide, the centre of slide is equipped with the recess of slope, rack one is along the direction of motion and the material loading ejector pad fixed connection of material loading ejector pad, rack two and function block fixed connection, the gear meshes between rack one and rack two, the gear rotates with the mount to be connected.

Preferably, the cleaning device comprises a piston cylinder, a cleaning brush, a rotary cylinder, a rotating seat, a motor and a water spray pipe, wherein the piston cylinder is positioned below the fixed plate, a piston rod of the piston cylinder is fixedly connected with the fixed plate, the piston cylinder is fixedly connected with the rack, the bottom of the piston cylinder is provided with a water inlet and a water outlet, one-way valves are respectively arranged at the water inlet and the water outlet, the water inlet is connected to a water tank through a water pipe, the rotary cylinder is fixedly connected with the rotating seat, the rotating seat is rotatably connected with the rack, and the rotating seat is fixedly connected with an output shaft of the motor;

be equipped with the blade in the rotary drum, the pivot of blade passes rotary drum and cleaning brush fixed connection, the tangential of rotary drum is equipped with inlet tube and the outlet pipe with inside intercommunication, inlet tube and delivery port intercommunication, outlet pipe and spray pipe intercommunication.

Preferably, a sliding groove is formed in the functional block and below the pin groove, a supporting block is connected in the sliding groove in an inverted T-shaped mode, the top end of the supporting block penetrates out of the sliding groove, a sliding rod is arranged at the bottom of the supporting block, the sliding rod is connected with a limiting block in a sliding mode, the limiting block is fixedly connected in the sliding groove, and a second spring is sleeved on the sliding rod between the supporting block and the limiting block.

Preferably, the top of the supporting block is provided with a V-shaped groove, and the top of the functional block is V-shaped with two high sides and a low middle.

The invention has the advantages that:

1) the functional block designed by the invention can be used with the clamping device in a matching way to bend the pins of the cylindrical electronic element, and the pins are vertically upward after the bending treatment is finished, so that the pins can be directly inserted and connected through the driving device, thereby organically combining the bending and inserting processes, avoiding the condition that the positions of the pins need to be adjusted by clamping the electronic element with the clamping jaw after the pins are bent by adopting a bending machine in the past, avoiding the step of adjusting the positions of the pins and improving the accuracy of inserting the pins into a circuit board;

2) the up-down movement of the function block and the linkage processing of the feeding push block can enable a new electronic element to enter the top of the feeding push block from the guide block when the function block rises to the highest point, and then the feeding push block can automatically move upwards when the function block descends to the lowest position, so that the top surface of the feeding push block is flush with the top surface of the function block, and the new electronic element enters the space between the two clamping blocks for the next welding;

3) set up the piston cylinder in the below of fixed plate, the piston rod that utilizes the removal drive piston cylinder of fixed plate removes, the in-process that can move up at the function block absorbs a certain amount automatically and washes the board water, press down the piston cylinder automatically after the welding is accomplished, thereby it is rotatory to wash the board water pump and go into the rotatory section of thick bamboo in the drive blade rotation cleaning brush, thereby it still can spray the cleaning brush through the spray pipe to wash the board water, thereby wash the position after the welding and avoid remaining scaling powder and rosin to cause the pollution to the circuit board.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a functional block at the lowest point;

FIG. 2 is a schematic view of the overall structure of the functional block at the highest point;

FIG. 3 is a schematic structural diagram of a functional block and a feeding device;

FIG. 4 is a cross-sectional view of the internal structure of the functional block in the transverse direction;

FIG. 5 is a longitudinal sectional view of the clamping device after the functional block is extended in a clamped state;

FIG. 6 is a schematic view of the structure of the clamping device;

FIG. 7 is a transverse cross-sectional view of the functional block alone;

FIG. 8 is a schematic view of a part of the structure of the cleaning apparatus;

FIG. 9 is a schematic view showing an internal structure of a rotary cylinder;

fig. 10 is a structural view of the support block.

In the figure: 1-a functional block, 11-a central groove, 12-a pin groove, 13-a sliding groove, 14-a supporting block, 141-a V-shaped groove, 15-a sliding rod, 16-a limiting block and 17-a spring II;

2-a feeding device, 21-a guide block, 22-a feeding push block, 23-a rack I, 24-a rack II, 25-a gear, a slide way and 26-a fixed frame;

3-driving device, 31-linear module, 32-fixing plate;

4-cleaning device, 41-piston cylinder, 411-piston rod, 42-cleaning brush, 43-rotary cylinder, 431-blade, 432-water inlet pipe, 433-water outlet pipe, 44-rotary seat, 45-motor, 46-water spray pipe;

5-a frame, 6-a clamping device, 60-a central block, 61-an electromagnet, 62-a sliding column, 63-a clamping block, 631-a lower pressing block, 632-a supporting structure, 64-a first spring, 65-an iron sheet and 7-an electric push rod.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained by combining the specific embodiments.

As shown in fig. 1 to 10, a positioning welding device for electronic components includes a functional block 1, a feeding device 2, a driving device 3, a cleaning device 4, and a frame 5, wherein a central slot 11 for placing an electronic component is provided on the functional block 1, pin slots 12 for accommodating pins are provided on two sides of the central slot 11, a slidable clamping device 6 is provided in the central slot 11, the clamping device 6 is used for clamping and fixing the electronic component, the clamping device 6 moves downward under the condition of clamping the electronic component to bend the pins of the electronic component, then the clamped electronic component extends out of the functional block 1, and the driving device 3 is used for driving the functional block 1 to move upward;

the feeding device 2 is arranged on the frame 5, the operation of the feeding device 2 is linked with the up-and-down movement of the functional block 1, and when the functional block 1 moves down to the lowest point, a new electronic element is put into the central groove 11;

the cleaning device 4 converts the distance change of the functional block 1 relative to the frame 5 into the cleaning of the circuit board in the process of moving the functional block 1 downwards.

In this embodiment, the driving device 3 includes a linear module 31 and a fixing plate 32, the linear module 31 is vertically disposed on the frame 5, and the fixing plate 32 is fixedly connected to the sliding table of the linear module 31.

In this embodiment, the clamping device 6 includes a center block 60, the center block 60 is slidably connected inside the function block 1, an electromagnet 61 is disposed in the center block 60, four corners of left and right side walls of the center block 60 are each provided with a sliding column 62, the left and right sides of the center block 60 are each provided with a clamping block 63 slidably connected with the sliding column 62, four sliding columns 62 below are each sleeved with a first spring 64, the first spring 64 is located between the clamping block 63 and the center block 60, an iron sheet 65 is embedded in a position of the clamping block 63 corresponding to the electromagnet 61, a lower pressing block 631 is disposed at the top of the clamping block 63, a support structure 632 is disposed below the clamping block, the center block 60 is fixedly connected to an output end of the electric putter 7, and the electric putter 7 is fixedly connected to the fixing plate 32.

In this embodiment, loading attachment 2 includes guide block 21, material loading ejector pad 22, rack 23, rack two 24 and

gear

25, 26 fixed connection of mount on guide block 21 and the frame 5, be equipped with the material loading ejector pad 22 of linking between guide block 21 and the function block 1, material loading ejector pad 22 sliding connection is on the lateral wall of function block 1, the top of guide block 21, the top of material loading ejector pad 22 and the top of function block 1 all are equipped with slide a, the centre of slide a is equipped with the recess of slope, rack 23 is along the direction of motion and material loading ejector pad 22 fixed connection of material loading ejector pad 22, rack two 24 and function block 1 fixed connection, gear 25 meshes between rack one 23 and rack two 24, gear 25 rotates with mount 26 to be connected.

In this embodiment, the cleaning device 4 includes a piston cylinder 41, a cleaning brush 42, a rotary cylinder 43, a rotary seat 44, a motor 45, and a water spray pipe 46, where the piston cylinder 41 is located below the fixed plate 32, a piston rod 411 of the piston cylinder is fixedly connected to the fixed plate 32, the piston cylinder 41 is fixedly connected to the frame 5, a water inlet and a water outlet are disposed at the bottom of the piston cylinder 41, one-way valves are disposed at the water inlet and the water outlet, the water inlet is connected to a water tank through a water pipe, the rotary cylinder 43 is fixedly connected to the rotary seat 44, the rotary seat 44 is rotatably connected to the frame 5, and the rotary seat 44 is fixedly connected to an output shaft of the motor 45 to realize rotation;

be equipped with blade 431 in the rotary drum 43, rotary drum 43 and cleaning brush 42 fixed connection are passed to blade 431's pivot, the tangential of rotary drum 43 is equipped with inlet tube 432 and outlet pipe 433 with inside intercommunication, inlet tube 432 and delivery port intercommunication, outlet pipe 433 communicates with spray pipe 46.

In this embodiment, a sliding groove 13 is formed in the functional block 1 and located below the pin groove 12, a supporting block 14 is connected in the sliding groove 13 in a sliding manner, the supporting block 14 is in an inverted T shape, the top end of the supporting block 14 penetrates through the sliding groove 13, a sliding rod 15 is arranged at the bottom of the supporting block 14, the sliding rod 15 is connected with a limiting block 16 in a sliding manner, the limiting block 16 is fixedly connected in the sliding groove 13, and a second spring 17 is sleeved on the sliding rod 15 between the supporting block 14 and the limiting block 16.

In this embodiment, the top of the supporting block 14 is provided with a V-shaped groove 141, and the top of the functional block 1 is V-shaped with two sides higher and the middle lower.

The working process and the principle thereof are as follows:

the guide block 21 is butted with a screening machine in the prior art, the screening machine lays electronic components on a slideway a of the guide block 21 in the same state, the electronic components are positioned in a groove at the center of the slideway a, when the function block 1 is positioned at the lowest position, the feeding push block 22 is positioned at the highest position, the feeding push block 22 is connected with the slideways a of the function block 1 at the moment, the electronic components on the feeding push block 22 slide to a position between the two clamping blocks 63 along the slideways a and are positioned above the supporting structure 632, and the pins are positioned in the pin grooves 12.

The electromagnet 61 is electrified to attract the iron sheet 65, so that the clamping blocks 63 on the two sides of the central block 60 move in a centering way, the first spring 64 is compressed, and the electronic component is clamped between the two clamping blocks 63, and the pressing block 631 is positioned above the pins. Then the electric push rod 7 is started to drive the center block 60 to move downwards, the center block 60 moves downwards to drive the two clamping blocks 63 to move downwards, the electronic component moves downwards, the lower pressing block 631 presses the pins into the V-shaped groove 141 at the top of the supporting block 14, and the pins are bent into a right-angled state in an area defined by the lower pressing block 631, the supporting block 14 and the pin groove 12 along with the continuous pressing of the lower pressing block 631.

Subsequently, in a state where the electronic component is clamped by the clamp block 63, the electric push rod 7 pushes the center block 60 to move upward, thereby pushing the electronic component out of the inside of the function block 1 until the electronic component is extended above the function block 1.

The driving device 3 drives the fixing plate 32 to move upwards, the functional block 1 moves upwards, the electronic component is inserted into the electric connection hole of the circuit board, the rack II 24 moves upwards in the process, the rack I23 is driven to move downwards through the gear 25, finally the feeding push block 22 moves downwards to the lowest point, a new electronic component slides onto the slide way a at the top of the feeding push block 22 along the slide way a of the guide block 21, and the preparation work of feeding is completed. In the process, the piston rod 411 of the piston cylinder 41 moves upwards, the water inlet of the piston cylinder 41 sucks the plate washing water from the water tank into the water tank, and then the welding robot performs welding.

After the welding is finished, the manipulator moves away, and the motor 45 drives the rotary base to rotate, so that the cleaning brush 42 is changed from the vertical state to the horizontal state. The electromagnet 61 is powered off, the clamping block 63 moves towards two sides under the action of the first spring 64, and the electronic component is released.

The function block 1 moves downwards, the fixed plate 32 presses the piston rod 411 downwards, the plate washing water in the piston cylinder 41 is pressed out from the water outlet and enters the rotating cylinder 43 through the water inlet pipe 432, then the plate washing water comes out from the water outlet pipe 433 and enters the water spray pipe 46, and finally the plate washing water is sprayed onto the cleaning brush, the water flow drives the blade 431 to drive the cleaning brush 42 to rotate in the process, so that the welded circuit board is cleaned, and the residual soldering flux is removed.

Conversely, the feeding push block 22 moves upwards again in the downward movement process of the functional block 1 until the slide way a of the feeding push block 22 is connected with the slide way a of the functional block 1, so that the electronic element slides between the two clamping blocks 63 through the slide way a again, and continuous bending, inserting and cleaning can be realized by repeating the operations.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. The positioning welding device for the electronic element is characterized by comprising a function block (1), a feeding device (2), a driving device (3), a cleaning device (4) and a rack (5), wherein a central groove (11) for placing the electronic element is formed in the function block (1), pin grooves (12) for accommodating pins are formed in two sides of the central groove (11), a slidable clamping device (6) is arranged in the central groove (11), the clamping device (6) is used for clamping and fixing the electronic element, the clamping device (6) moves downwards under the condition of clamping the electronic element to bend the pins of the electronic element, then the electronic element is clamped to extend out of the function block (1), and the driving device (3) is used for driving the function block (1) to move upwards;

the feeding device (2) is arranged on the rack (5), the operation of the feeding device (2) is linked with the up-and-down movement of the functional block (1), and when the functional block (1) moves down to the lowest point, a new electronic element is placed into the central groove (11);

and the cleaning device (4) converts the distance change of the functional block (1) relative to the rack (5) into the cleaning of the circuit board in the process of moving the functional block (1) downwards.

2. A positioning welding device for electronic components according to claim 1, characterized in that, the driving device (3) comprises a linear module (31) and a fixing plate (32), the linear module (31) is vertically arranged on the frame (5), and the fixing plate (32) is fixedly connected with a sliding table of the linear module (31).

3. The positioning welding device for electronic components according to claim 1, wherein the clamping device (6) comprises a central block (60), the central block (60) is slidably connected inside the functional block (1), a transversely placed electromagnet (61) is arranged in the central block (60), four corners of the left and right side walls of the central block (60) are respectively provided with a sliding column (62), the left and right sides of the central block (60) are respectively provided with a clamping block (63) slidably connected with the sliding columns (62), the four sliding columns (62) below are sleeved with a first spring (64), the first spring (64) is positioned between the clamping block (63) and the central block (60), an iron sheet (65) is embedded in the clamping block (63) at a position corresponding to the electromagnet (61), a lower pressing block (631) is arranged at the top of the clamping block (63), and a support structure (632) is arranged below the clamping block (63), the center block (60) is fixedly connected to the output end of the electric push rod (7), and the electric push rod (7) is fixedly connected with the fixing plate (32).

4. The positioning welding device for electronic components according to claim 1, wherein the feeding device (2) comprises a guide block (21), a feeding push block (22), a first rack (23), a second rack (24) and a gear (25), the guide block (21) is fixedly connected with a fixing frame (26) on the rack (5), a feeding push block (22) connected with the guide block (21) and the function block (1) is arranged between the guide block (21) and the function block (1), the feeding push block (22) is connected with the side wall of the function block (1) in a sliding manner, a slide way (a) is arranged on the top of the guide block (21), the top of the feeding push block (22) and the top of the function block (1), an inclined groove is arranged in the middle of the slide way (a), the first rack (23) is fixedly connected with the feeding push block (22) along the movement direction of the feeding push block (22), and the second rack (24) is fixedly connected with the function block (1), the gear (25) is meshed between the first rack (23) and the second rack (24), and the gear (25) is rotatably connected with the fixed frame (26).

5. A tack welding apparatus for electronic components according to claim 1, the cleaning device (4) comprises a piston cylinder (41), a cleaning brush (42), a rotary cylinder (43), a rotary seat (44), a motor (45) and a water spray pipe (46), wherein the piston cylinder (41) is positioned below the fixed plate (32), and a piston rod (411) is fixedly connected with a fixed plate (32), the piston cylinder (41) is fixedly connected with a frame (5), the bottom of the piston cylinder (41) is provided with a water inlet and a water outlet, the water inlet and the water outlet are both provided with one-way valves, the water inlet is connected to the water tank through a water pipe, the rotary cylinder (43) is fixedly connected with the rotary seat (44), the rotating seat (44) is rotationally connected with the rack (5), and the rotating seat (44) is fixedly connected with an output shaft of the motor (45);

be equipped with blade (431) in rotatory section of thick bamboo (43), rotatory section of thick bamboo (43) and cleaning brush (42) fixed connection are passed in the pivot of blade (431), the tangential of rotatory section of thick bamboo (43) is equipped with inlet tube (432) and outlet pipe (433) with inside intercommunication, inlet tube (432) and delivery port intercommunication, outlet pipe (433) and spray pipe (46) intercommunication.

6. The positioning welding device for the electronic element according to claim 1, characterized in that a sliding groove (13) is arranged in the functional block (1) and below the pin groove (12), a supporting block (14) is connected in the sliding groove (13) in a sliding manner, the supporting block (14) is in an inverted T shape, the top end of the supporting block (14) penetrates through the sliding groove (13), a sliding rod (15) is arranged at the bottom of the supporting block (14), the sliding rod (15) is connected with a limiting block (16) in a sliding manner, the limiting block (16) is fixedly connected in the sliding groove (13), and a second spring (17) is sleeved on the sliding rod (15) between the supporting block (14) and the limiting block (16).

7. A welding device for positioning electronic elements according to claim 6, characterized in that the top of the supporting block (14) is provided with a V-shaped groove (141), and the top of the functional block (1) is V-shaped with two sides higher and the middle lower.