An SMT board loading machine with a flip conveying mechanism

Abstract

The present invention discloses an SMT loading machine with a flip conveying mechanism, which relates to the technical field of PCB board surface mounting, and includes a base and a fixed conveying mechanism, wherein the top wall of the base is provided with a first conveying belt and a second conveying belt from left to right, the first conveying belt is provided with a size adjustment mechanism, the first conveying belt is provided with a loading mechanism, a fixing mechanism, a patch station 1 and a patch auxiliary mechanism in sequence from left to right, and the second conveying belt is provided with a unloading mechanism. The present invention adjusts a plurality of fixed conveying mechanisms synchronously according to the front and rear dimensions of the PCB board to be processed by adjusting unit 1, and adjusts a plurality of fixed conveying mechanisms synchronously according to the left and right dimensions of the PCB board to be processed by adjusting unit 2, and a buffering effect is played by the cooperation of an unloading auxiliary plate and an unloading guide plate, so as to prevent the PCB board from being damaged by collision during the unloading process, thereby improving the qualified rate of the finished product.

Description

Technical Field

[0001] The invention relates to the technical field of PCB surface mounting, and in particular to an SMT board loading machine with a flipping conveying mechanism. Background Art

[0002] SMT surface mounting technology is used to mount surface mount components with no leads or short leads directly on the surface of the printed circuit board PCB. It is completed using a placement machine, which is usually used in conjunction with a solder paste printer. During operation, solder paste is first printed on the PCB board, and then the components are placed by the placement machine. Finally, the welding process is completed by a welding machine. On the SMT production line, the PCB board is transported to the correct processing station by a conveying mechanism for subsequent processing.

[0003] At present, in the process of PCB board conveying and processing, there is usually a manual or automatic board feeder for placing the PCB boards to be processed. The conveying mechanism and the fixing mechanism are responsible for smoothly and accurately transferring each PCB board to each processing station. However, the existing fixing mechanism is usually not convenient for batch rapid adjustment according to the size of the PCB board, and the adaptability to different batches of PCB boards is low; secondly, the conveying mechanism is usually equipped with a positioning clamping member to fix the PCB board. For PCBs that require double-sided mounting, a flipping mechanism will be set in the production line to flip the PCB so that the other side can be processed, but the clamping member needs to be driven by a power source, which has high energy consumption, and in the process of rapid flipping, the solder paste corresponding to the welding place of the components processed on the front side has not been completely cooled, which is prone to displacement and falling off; furthermore, after completing all processing steps, the PCB will be conveyed to the board output area, and the processed PCB will be removed manually. The manual removal efficiency is low, and there are bumps and damages during the board removal process, which affects the qualified rate of finished products.

[0004] Therefore, in order to improve the compatibility between the conveying mechanism and the PCB board and increase the qualified rate of finished products, the present invention provides an SMT board loading machine with a flip conveying mechanism. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and to propose an SMT board loading machine with a flipping conveying mechanism.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An SMT board loading machine with a flip conveying mechanism comprises a base and a fixed conveying mechanism, wherein a first conveying belt and a second conveying belt are arranged on the top wall of the base from left to right, and two first conveying belts are arranged on the left part of the top wall of the base for relative sliding front and back, the first conveying belt is composed of an L-shaped seat 1, an L-shaped seat 2 and a moving part installed between the L-shaped seat 1 and the L-shaped seat 2, a fixed conveying mechanism and a size adjustment mechanism are arranged on the first conveying belt, and the fixed conveying mechanism comprises a T-shaped frame, a plurality of one-to-one corresponding T-shaped frames are evenly fixed on the top walls of two first conveying belt moving parts arranged front and back relatively, and the tops of the T-shaped frames are rotatably connected with adjusting rods, and the adjusting rods are composed of a cross bar with a slot in the middle, an L-shaped plate fixed to the bottom wall of the cross bar, and a rotating shaft fixed to the side wall of the L-shaped plate and rotatably connected to the top of the T-shaped frame.

[0008] A gear 1 is rotatably connected in the cross bar slot of the adjusting rod, and the front and rear side walls of the gear 1 are meshedly connected with a tooth plate 1, and the side wall of the tooth plate 1 is fixedly connected with an adjusting piece 1, the two adjusting pieces are sleeved and slidably connected to the left and right ends of the cross bar of the adjusting rod respectively, and an adjusting cross bar is fixed to the outer wall of the side of the adjusting piece 1 away from the T-shaped frame, an adjusting piece 2 is sleeved between the two corresponding adjusting cross bars at the front and back, and the adjusting cross bar is slidably connected to the inner wall of the adjusting piece 2, and a limiting strip 1 is fixed to the right part of the top wall of the adjusting piece 2 between the two adjusting cross bars on the right; a loading mechanism, a fixing mechanism, a patch station 1 and a patch auxiliary mechanism are sequentially arranged on the first conveyor belt from left to right, and a unloading mechanism is arranged on the second conveyor belt.

[0009] In the above-mentioned SMT loading machine with a flip conveying mechanism, the two L-shaped seats 2 of the first conveying belts are slidably connected, and the size adjustment mechanism includes an adjustment unit 1 for front-to-back size adjustment and an adjustment unit 2 for left-to-right size adjustment.

[0010] In the above-mentioned SMT loading machine with a flip conveying mechanism, an adjustment unit 1 includes a support plate 1, and a support plate 2 and two support plates 1 are respectively arranged at the front and rear parts of the top wall of the base, a motor is installed between the two support plates 1, and a bidirectional screw rod is fixed at the rear side of the output end of the motor, the lower part of the L-shaped seat of the two first conveyor belts is respectively threadedly connected to the front and rear parts of the bidirectional screw rod, and the front and rear ends of the bidirectional screw rod are respectively rotatably connected to the rear side wall of support plate 1 and the front side wall of support plate 2.

[0011] In the above-mentioned SMT loading machine with a flip conveying mechanism, the adjustment unit 2 includes an electric push rod 1, and the two L-shaped seats 1 of the first conveyor belts are each installed with an electric push rod 1 close to the side wall, and a driving member 1 is fixed to the output end of the electric push rod 1, and the driving member 1 is composed of a vertical plate connected to the electric push rod 1, a roller frame fixed on the vertical plate, and a transverse roller rotatably connected to the roller frame, and a baffle bar 1 is fixed to the side wall of the roller frame fixed to the driving member 1, and a baffle bar 2 corresponding to the baffle bar 1 is fixed to the bottom wall of the adjustment member 1 on the left part of the cross bar of the adjustment rod.

[0012] In the above-mentioned SMT loading machine with a flip conveying mechanism, the bottom wall of the adjusting member 1 is slidably connected to a pushing member, and the pushing member is composed of a wedge block 1 and a fixed block connected to the wedge block 1 through a spring 1 and fixed to the bottom wall of the adjusting member 1. The bottom wall of the overlapping part of the adjusting rod and the adjusting member 1 is slidably penetrated and connected up and down with a locking member, and the locking member is composed of a wedge block 2 adapted to the pushing member, an inverted T-shaped block fixed to the side wall of the wedge block 2, and a spring 2 connected between the top wall of the inverted T-shaped block and the adjusting member 1. The adjusting rod and the bottom wall of the adjusting member 1 are both provided with holes adapted to the top of the inverted T-shaped block of the locking member, and the outer walls on the side where the wedge block 1 of the pushing member and the wedge block 2 of the locking member are close to each other are both inclined.

[0013] In the above-mentioned SMT loading machine with a flip conveying mechanism, the loading mechanism includes a loading bin, a rear side wall of the first conveyor belt L-shaped seat 1 at the top rear part of the base is fixed with the loading bin, and the loading bin is composed of a circular bin and a track plate fixed to the top wall of the circular bin, an electric slide plate is connected to the circular bin for up and down sliding movement inside, and an electric slider 1 is connected to the bottom wall of the track plate of the loading bin for front and back sliding movement, the bottom wall of the electric slider 1 is connected to a positioning plate 1 through an electric push rod 2, and an electric suction cup is installed on the bottom wall of the positioning plate 1, and the bottom wall of the positioning plate 1 is provided with positioning holes in a matrix shape.

[0014] In the above-mentioned SMT loading machine with a flip conveying mechanism, the fixing mechanism includes a fixing plate, and the adjacent side walls of the two first conveyor belt L-shaped seats are fixedly connected with the fixing plates, and two racks 1 are distributed on the left and right sides of the fixing plate close to the adjusting member 1, and there is a height difference between the two racks 1, and the top wall of the adjusting member 1 is rotatably connected with a positioning shaft, and the side walls of the positioning shaft are fixed with gears 2 and fan-shaped limit plates from top to bottom, the top wall height of the fan-shaped limit plates is lower than the bottom wall height of the fixed plate, and the bottom wall of the fan-shaped limit plates is fixed with limit strips 2, and the gears 2 on the two adjusting members 1 on the same side wall of the adjusting rod correspond to the two racks 1 respectively, and the positioning holes correspond to the positioning shaft.

[0015] In the above-mentioned SMT loading machine with a flipping conveying mechanism, the patch auxiliary mechanism includes a patch station two, and the patch station two located on the right side of the patch station one is installed on the right part of the top wall of the L-shaped seat one of the first conveyor belt, and the inner wall of the patch station two is symmetrically provided with arc-shaped slide rails, and a flip frame is slidably connected between the arc-shaped slide rails, and the bottom wall of the flip frame is connected to the positioning plate two through an electric push rod three, and the positioning plate two is composed of a square plate connected to the electric push rod three and a U-shaped plate fixed to the front and rear side walls of the square plate, and the U-shaped plate of the positioning plate two is provided with a hole position adapted to the positioning axis, and the bottom wall of the square plate of the positioning plate two is connected to the unloading auxiliary plate through a spring three, and the edge of the bottom wall of the square plate of the positioning plate two is hinged with an electric push rod four hingedly connected to the unloading auxiliary plate.

[0016] In the above-mentioned SMT loading machine with a flipping and conveying mechanism, a gear three is fixed to the side of the rotating shaft of the adjusting rod close to the patch station two, and a driving member two is provided on the top wall of the gear three, and the driving member two is composed of an electric slider assembly and a toothed plate two fixed to the bottom wall of the electric slider assembly.

[0017] In the above-mentioned SMT loading machine with a flip conveying mechanism, the unloading mechanism includes a driving member three, and the inner wall of the patch station two is slidably connected with the driving member three adapted to the gear two, the top wall of the fixed part of the second conveyor belt is symmetrically fixedly connected with the support frame front and back, and the support frames are rotatably connected with an unloading guide plate through a torsion spring rod, the top wall of the unloading guide plate is inclined to the lower right side, and the height of the left part of the top wall of the unloading guide plate is lower than the height of the right side of the bottom wall of the unloading auxiliary plate.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. The first adjustment unit is used to synchronously adjust multiple fixed conveying mechanisms according to the front and rear dimensions of the PCB board to be processed, and the second adjustment unit is used to synchronously adjust multiple fixed conveying mechanisms according to the left and right dimensions of the PCB board to be processed, thereby improving the flexibility of the size change of the fixed conveying mechanisms and increasing the adaptability of the device.

[0020] 2. The fixed mechanism and the fixed conveying mechanism cooperate with each other on the first conveyor belt, and the power in the conveying process is used to realize automatic position limiting of the PCB board. There is no need to increase the power source. The four fan-shaped limit plates are synchronously driven to limit the four corners of the PCB board to prevent the PCB board to be processed from position deviation in the subsequent processing process.

[0021] 3. Through the cooperation of the patch auxiliary mechanism and the unloading mechanism, the PCB board that has been processed on the front side is flipped over, and support and protection are provided during the flipping to prevent the position of components from shifting or falling. The unloading auxiliary plate and the unloading guide plate cooperate to play a buffering role to prevent the PCB board from being damaged during the unloading process, thereby improving the qualified rate of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings, wherein:

[0023] Figure 1 The present invention is a schematic diagram of the overall structure of an SMT loading machine with a flipping and conveying mechanism.

[0024] Figure 2 for Figure 1 A schematic diagram of the structure from another perspective.

[0025] Figure 3 The present invention provides a schematic structural diagram of a fixed conveying mechanism of an SMT loading machine with a flip conveying mechanism.

[0026] Figure 4 The figure is a schematic diagram of the exploded structure of a fixed conveying mechanism of an SMT loading machine with a flip conveying mechanism proposed by the present invention.

[0027] Figure 5 It is a partial structural schematic diagram of an adjustment unit 2 of an SMT loading machine with a flipping and conveying mechanism proposed by the present invention.

[0028] Figure 6 This is another partial structural schematic diagram of the adjustment unit 2 of the SMT loading machine with a flipping and conveying mechanism proposed by the present invention.

[0029] Figure 7 The present invention provides a schematic structural diagram of a loading mechanism of an SMT loading machine with a flipping and conveying mechanism.

[0030] Figure 8 The present invention is a schematic structural diagram of a fixing mechanism of an SMT loading machine with a flipping and conveying mechanism.

[0031] Fig. 9 The present invention provides a schematic structural diagram of a patch auxiliary mechanism of an SMT loading machine with a flipping and conveying mechanism.

[0032] Fig.10 It is a partial structural schematic diagram of a material unloading mechanism of an SMT loading machine with a flipping and conveying mechanism proposed by the present invention.

[0033] Fig.11 The present invention provides a schematic structural diagram of an SMT loading machine with a flipping conveying mechanism in a tilted state of an auxiliary board for unloading.

[0034] Fig.12 This is a schematic diagram of the upward structure of the fan-shaped limit plate of the SMT loading machine with a flip conveying mechanism proposed by the present invention before adjustment.

[0035] Fig.13 This is a schematic diagram of the upward structure of the SMT loading machine with a flip conveying mechanism proposed by the present invention after the fan-shaped limit plate is adjusted.

[0036] In the figure: 1, base; 21, first conveyor belt; 22, second conveyor belt; 3, fixed conveying mechanism; 31, T-shaped frame; 32, adjusting rod; 33, gear 1; 34, tooth plate 1; 35, adjusting member 1; 36, adjusting cross bar; 37, adjusting member 2; 4, size adjustment mechanism; 41, adjusting unit 1; 411, support plate 1; 412, support plate 2; 413, motor; 414, two-way screw rod; 42, adjusting unit 2; 421, electric push rod 1; 422, driving member 1; 423, stop bar 1; 424, pushing member; 425, locking member; 426, stop bar 2; 5, feeding mechanism; 5 1. Loading bin; 52. Electric slide plate; 53. Electric slide block 1; 54. Electric push rod 2; 55. Positioning plate 1; 56. Positioning hole; 57. Electric suction cup; 6. Fixing mechanism; 61. Fixing plate; 62. Rack 1; 63. Gear 2; 64. Positioning shaft; 65. Fan-shaped limit plate; 7. SMT station 1; 8. SMT auxiliary mechanism; 81. SMT station 2; 82. Flip frame; 83. Electric push rod 3; 84. Positioning plate 2; 85. Electric push rod 4; 86. Unloading auxiliary plate; 87. Gear 3; 88. Driving component 2; 9. Unloading mechanism; 91. Driving component 3; 92. Support frame; 93. Unloading guide plate. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Reference Figure 1, an SMT board loading machine with a flip conveying mechanism, including a base 1 and a fixed conveying mechanism 3, a top wall of the base 1 is provided with a first conveying belt 21 and a second conveying belt 22 from left to right, the left part of the top wall of the base 1 has two first conveying belts 21 that slide relatively front and back, the first conveying belt 21 is composed of an L-shaped seat 1, an L-shaped seat 2 and a moving part (i.e., a conveying belt) installed between the L-shaped seat 1 and the L-shaped seat 2, the L-shaped seat 2 of the two first conveying belts 21 is slidably connected, a fixed conveying mechanism 3 and a size adjustment mechanism 4 are provided on the first conveying belt 21, the size adjustment mechanism 4 includes an adjustment unit 1 41 for front and rear size adjustment and an adjustment unit 2 42 for left and right size adjustment, a loading mechanism 5, a fixing mechanism 6, a patch station 1 7 and a patch auxiliary mechanism 8 are sequentially provided on the first conveying belt 21 from left to right, and a unloading mechanism 9 is provided on the second conveying belt 22.

[0039] The PCB board to be processed is transported by the first conveyor belt 21 and the second conveyor belt 22. The fixed conveying mechanism 3 is adjusted according to the front and rear dimensions of the PCB board to be processed by the adjusting unit 1 41, and the fixed conveying mechanism 3 is adjusted according to the left and right dimensions of the PCB board to be processed by the adjusting unit 2 42. The PCB board to be processed that requires patches on both the front and back sides is loaded by adjusting the loading mechanism 5 in the middle of the first conveyor belt 21. The PCB board to be processed is placed on the fixed conveying mechanism 3, transported to the right side to the fixed mechanism 6, and then limited. It is further transported to the right to the patch station 1 7 for front patching. After the front patching is completed, it continues to move to the patch auxiliary mechanism 8, and the PCB board is turned over at the patch auxiliary mechanism 8, and the PCB board is mounted with the back side facing up. After the front and back patches of the PCB board are completed, the PCB board is unloaded by adjusting the unloading mechanism 9.

[0040] Reference Figure 1 , Figure 3 and Figure 4The fixed conveying mechanism 3 includes a T-shaped frame 31. The top walls of the moving parts of the two first conveyor belts 21 arranged opposite to each other are evenly fixed with a plurality of T-shaped frames 31 corresponding to each other. The tops of the T-shaped frames 31 are rotatably connected with adjusting rods 32. The adjusting rods 32 are composed of a cross bar with a slot in the middle, an L-shaped plate fixed to the bottom wall of the cross bar, and a rotating shaft fixed to the side wall of the L-shaped plate and rotatably connected to the top of the T-shaped frame 31; a gear 33 is rotatably connected in the groove of the cross bar of the adjusting rod 32, and the front and rear side walls of the gear 33 are meshed A tooth plate 1 34 is connected, and an adjusting piece 1 35 is fixedly connected to the side wall of the tooth plate 1 34. The two adjusting pieces 1 35 are sleeved and slidably connected to the left and right ends of the cross bar of the adjusting rod 32 respectively. An adjusting cross bar 36 is fixed to the outer wall of the adjusting piece 1 35 away from the T-shaped frame 31. An adjusting piece 2 37 is sleeved between the two corresponding adjusting cross bars 36 at the front and rear. The adjusting cross bar 36 is slidably connected to the inner wall of the adjusting piece 2 37. A limiting strip 1 is fixed to the right part of the top wall of the adjusting piece 2 37 between the two adjusting cross bars 36 on the right.

[0041] Reference Figure 1 and Figure 2 The adjusting unit 41 includes a support plate 1 411, a support plate 2 412 and two support plates 1 411 are respectively arranged at the rear and front of the top wall of the base 1, a motor 413 is installed between the two support plates 1 411, a bidirectional screw rod 414 is fixed to the rear side of the output end of the motor 413, and the lower part of the L-shaped seat of the two first conveyor belts 21 is respectively threadedly connected to the front and rear of the bidirectional screw rod 414, and the front and rear ends of the bidirectional screw rod 414 are respectively rotatably connected to the rear side wall of the support plate 1 411 and the front side wall of the support plate 2 412.

[0042] Reference Figure 1 , Figure 3 , Figure 5 and Figure 6 The adjusting unit 42 includes an electric push rod 421, and the L-shaped seats of the two first conveyor belts 21 are each installed with an electric push rod 421 on the side walls close to each other. A driving member 422 is fixed to the output end of the electric push rod 421. The driving member 422 is composed of a vertical plate connected to the electric push rod 421, a roller frame fixed on the vertical plate, and a transverse roller rotatably connected to the roller frame. A baffle bar 423 is fixed to the side wall of the roller frame fixed to the driving member 422, and a baffle bar 426 corresponding to the baffle bar 423 is fixed to the bottom wall of the adjusting member 35 on the left part of the cross bar of the adjusting rod 32.

[0043] Reference Figure 3 , Figure 5 and Figure 6The bottom wall of the adjusting member 35 is slidably connected with a pushing member 424, which is composed of a wedge block 1 and a fixed block connected to the wedge block 1 through a spring 1 and fixed to the bottom wall of the adjusting member 35. The bottom wall of the overlapping part of the adjusting rod 32 and the adjusting member 35 slides up and down and penetrates and is connected with a locking member 425. The locking member 425 is composed of a wedge block 2 adapted to the pushing member 424, an inverted T-shaped block fixed to the side wall of the wedge block 2, and a spring 2 connected between the top wall of the inverted T-shaped block and the adjusting member 35. The adjusting rod 32 and the bottom wall of the adjusting member 35 are both provided with holes adapted to the top of the inverted T-shaped block of the locking member 425. The outer walls of the side where the wedge block 1 of the pushing member 424 and the wedge block 2 of the locking member 425 are close to each other are both inclined.

[0044] The support plate 1 411 supports the motor 413. The output end of the motor 413 rotates to drive the bidirectional screw rod 414 to rotate. The rear end of the bidirectional screw rod 414 rotates on the front side wall of the support plate 2 412. The two first conveyor belts 21 approach or move away with the rotation of the bidirectional screw rod 414, and the first conveyor belts 21 slide back and forth on the top wall of the base 1; the T-shaped frame 31 fixed on the moving part of the two first conveyor belts 21 approaches or moves away accordingly, and the two adjusting cross bars 36 slide in and out inside the adjusting member 2 37 accordingly. When the adjusting cross bar 36 slides out of the adjusting member 2 37, the overall front and rear dimensions of the fixed conveying mechanism 3 become longer. When the adjusting cross bar 36 slides into the adjusting member 2 37, the overall front and rear dimensions of the fixed conveying mechanism 3 become shorter. In this way, the dimensions of multiple fixed conveying mechanisms 3 are synchronously adjusted according to the front and rear dimensions of the PCB board to be processed.

[0045] Initially, the inverted T-shaped block of the locking member 425 is pushed downward to leave the hole position of the adjusting rod 32 and the adjusting member 35, and the left and right adjusting members 35 slide close to the outer wall of the adjusting rod 32 to the minimum distance, and then the locking member 425 is released; the fixed conveying mechanism 3 is driven from left to right to the adjusting unit 42 along with the transmission of the first conveyor belt 21. When the distance between the left and right adjusting members 35 needs to be adjusted, the output end of the electric push rod 421 extends to push the driving member 4 22 and baffle 1 423 move toward pushing member 424 and baffle 2 426, the transverse roller of driving member 1 422 first contacts wedge block 1 of pushing member 424, and as the electric push rod 1 421 extends, the wedge block 1 of pushing member 424 is pushed toward locking member 425 until the wedge block 2 of locking member 425 drives the inverted T-shaped block to move downward, and the inverted T-shaped block of locking member 425 moves downward to disengage from the hole position on adjusting member 1 35 and tooth plate 1 34, thereby releasing the limit on tooth plate 1 34 and adjusting member 1 35.

[0046] When the electric push rod 421 is extended, the blocking bar 423 approaches the blocking bar 426. When the locking member 425 releases the limit on the tooth plate 34 and the adjusting member 35, the blocking bar 423 blocks the blocking bar 426 to limit the movement of the corresponding adjusting member 35. At this time, the moving part of the first conveyor belt 21 continues to drive the adjusting rod 32 and the other adjusting member 35 on the adjusting rod 32 to move. After the gear 33 and the tooth plate 34 on the limited adjusting member 35 move relative to each other, the gear 33 rotates. The rotation of the gear 33 drives the other tooth plate 34 and the adjusting member 35 to slide at the end of the adjusting rod 32, and the distance between the two adjusting members 35 is adjusted accordingly.

[0047] When the two adjusting members 35 are adjusted to the appropriate positions, the electric push rod 421 drives the driving member 422 and the blocking bar 423 to reset, and the lateral roller of the driving member 422 no longer pushes the wedge block 1 of the pushing member 424, and the wedge block 1 of the pushing member 424 is separated from the wedge block 2 of the locking member 425, and the inverted T-block of the locking member 425 is reset and moves upward and enters the hole position of the adjusting rod 32 and the adjusting member 35, and the adjusting rod 32 and the adjusting member 35 are locked and limited again, and the blocking bar 1 423 releases the blocking of the blocking bar 2 426, and the fixed conveying mechanism 3 continues to convey with the first conveyor belt 21 after completing the adjustment; in this way, during the movement of the fixed conveying mechanism 3, according to the left and right dimensions of the PCB board to be processed, the left and right dimensions of multiple fixed conveying mechanisms 3 are adjusted synchronously.

[0048] It should be noted that the T-shaped frame 31 can be prevented from interfering with the turning of the moving part by controlling the connection area between the T-shaped frame 31 and the moving part or by hingedly connecting the T-shaped frame 31 and the moving part through a torsion spring rod.

[0049] Reference Figure 2 and Figure 7 The feeding mechanism 5 includes a feeding bin 51, and the rear side wall of the first conveyor belt 21L-shaped seat 1 at the top rear part of the base 1 is fixed with the feeding bin 51, and the feeding bin 51 is composed of a circular bin and a track plate fixed to the top wall of the circular bin. The inner part of the circular bin of the feeding bin 51 is connected with an electric slide plate 52 for sliding up and down, and the bottom wall of the track plate of the feeding bin 51 is connected with an electric slider 53 for sliding back and forth. The bottom wall of the electric slider 53 is connected with a positioning plate 55 through an electric push rod 54, and the bottom wall of the positioning plate 55 is installed with an electric suction cup 57, and the bottom wall of the positioning plate 55 is provided with positioning holes 56 in a matrix shape.

[0050] Reference Figure 7 and Figure 8The fixing mechanism 6 includes a fixing plate 61, and the adjacent side walls of the two first conveyor belt 21L-shaped seats are fixedly connected with the fixing plates 61. Two racks 62 are distributed on the left and right sides of the fixing plate 61 close to the adjusting member 35. There is a height difference between the two racks 62. The top wall of the adjusting member 35 is rotatably connected with a positioning shaft 64. The side walls of the positioning shaft 64 are fixed with gears 63 and fan-shaped limit plates 65 from top to bottom. The top wall height of the fan-shaped limit plates 65 is lower than the bottom wall height of the fixing plate 61. The bottom walls of the fan-shaped limit plates 65 are fixed with limit strips 63. The gears 63 on the two adjusting members 35 on the side walls of the same adjusting rod 32 correspond to the two racks 62 respectively, and the positioning hole 56 corresponds to the positioning shaft 64.

[0051] When the fixed conveying mechanism 3 with adjusted size is transferred to the loading mechanism 5 along with the moving part of the first conveyor belt 21, the height of the positioning plate 55 is adjusted by the electric push rod 2 54. The positioning plate 55 and the electric push rod 2 54 are detachable structures, which are convenient for replacing the positioning plate 55 matched with the size of the PCB board to be processed. The electric suction cup 57 is a prior art. The PCB boards to be processed stacked in the loading bin 51 are adsorbed by the electric suction cup 57. The electric slider 1 53 slides on the bottom of the track plate of the loading bin 51 until it slides to the top of the fixed conveying mechanism 3. The electric push rod 2 54 moves downward to drive the positioning plate 55 to move to the positioning shaft 64 to engage with the positioning hole 56. The electric suction cup 57 releases the PCB board, and the PCB board is placed horizontally on the top of the fixed conveying mechanism 3. The loading is completed, the electric slider 1 53 drives the electric suction cup 57 to reset, and the loading of the next PCB board continues. The electric slide plate 52 moves upward to drive the PCB board to be processed thereon to move up to the adsorption position.

[0052] The PCB board to be processed after loading is completed continues to move to the right, and the gear 2 63 and the corresponding rack 1 62 are meshed after approaching, and the gear 2 63 rotates to drive the fan-shaped limit plate 65 to rotate 90 degrees, and the fan-shaped limit plate 65 rotates to the top of the adjustment member 1 35. At this time, the fan-shaped limit plate 65 limits the four corners of the PCB board to be processed on the top of the fixed conveying mechanism 3, and at the same time, the limit strips 1 and 2 are used to limit the front, back, left, and right sides of the PCB board to prevent the PCB board to be processed from being offset in the subsequent processing process, so as to quickly limit multiple directions of the PCB board to be processed.

[0053] Reference Figure 1 and Fig. 9The patch auxiliary mechanism 8 includes a patch station 2 81. The right part of the top wall of the L-shaped seat 1 of the first conveyor belt 21 is equipped with a patch station 2 81 located on the right side of the patch station 1 7. The inner wall of the patch station 2 81 is symmetrically provided with arc-shaped slide rails. A flip frame 82 is slidably connected between the arc-shaped slide rails. The bottom wall of the flip frame 82 is connected to a positioning plate 2 84 through an electric push rod 3 83. The positioning plate 2 84 is composed of a square plate connected to the electric push rod 3 83 and a U-shaped plate detachably connected to the front and rear side walls of the square plate. The U-shaped plate of the corresponding size can be installed according to the actual size of the PCB. The positioning plate 2 8 A hole matching the positioning shaft 64 is opened on the U-shaped plate 4, the bottom wall of the square plate of the positioning plate 2 84 is connected to the material unloading auxiliary plate 86 through the spring 3, and the edge of the bottom wall of the square plate of the positioning plate 2 84 is hinged with an electric push rod 4 85 hingedly connected to the material unloading auxiliary plate 86; a gear 3 87 is fixed on the side of the rotating shaft of the adjusting rod 32 close to the patch station 2 81, and a driving member 2 88 is provided on the top wall of the gear 3 87. The driving member 2 88 consists of an electric slider assembly and a toothed plate 2 fixed to the bottom wall of the electric slider assembly. The electric slider assembly can drive the toothed plate 2 to move horizontally and up and down.

[0054] Reference Figures 9 to 11 The unloading mechanism 9 includes a driving member 3 91. The inner wall of the patch station 2 81 is slidably connected with the driving member 3 91 adapted to the gear 2 63. The driving member 3 91 is composed of a rack 2 meshing with the gear 2 63 and an electric slider assembly (not shown in the figure) that drives the rack 2 to lift and move left and right. The top wall of the fixed part of the second conveyor belt 22 is symmetrically fixedly connected with a support frame 92 front and back. The support frames 92 are rotatably connected with an unloading guide plate 93 through a torsion spring rod. The top wall of the unloading guide plate 93 is inclined toward the lower right side, and the height of the left part of the top wall of the unloading guide plate 93 is lower than the height of the right side of the bottom wall of the unloading auxiliary plate 86.

[0055] The tops of both the patch station 1 7 and the patch station 2 81 are equipped with existing patch actuators and laser welding heads. When the PCB board to be processed moves to the right to the patch station 1 7 after limiting, the front side of the PCB board to be processed is patched and welded. The PCB board to be processed that has completed front side welding continues to move to the right to the patch auxiliary mechanism 8. The flip frame 82 supports the electric push rod 3 83, the positioning plate 2 84 and the unloading auxiliary plate 86. The output end of the electric push rod 3 83 moves downward to drive the positioning plate 2 84 and the unloading auxiliary plate 86 to move downward as a whole. The U-shaped plate of the positioning plate 2 84 moves down to the positioning shaft 64 and enters the corresponding hole position. The unloading auxiliary plate 86 moves to the bottom wall to fit the front side of the PCB board to be processed, and presses the PCB board and components that have been processed on the front side to prevent flipping and falling off, so as to avoid rotation when the solder paste is not completely cooled and solidified, which may cause the components to fall off. It should be noted that a flexible sponge pad is installed on the bottom wall of the blanking auxiliary plate 86 to prevent the components from being damaged due to excessive pressing force.

[0056] The driving member 2 88 moves close to the gear 3 87 until it meshes with the gear 3 87. The gear 3 87 rotates to drive the adjusting rod 32 to rotate on the T-shaped frame 31, and the PCB board is flipped accordingly. The unloading auxiliary plate 86 is close to the front of the PCB board and flips accordingly. During the flipping process, the flipping frame 82 slides on the inner wall of the patch station 2 81 to play a certain supporting role. The flipped PCB board is patched and welded on the reverse side at the patch station 2 81. Before flipping, the electric slider assembly in the driving member 3 91 drives the rack 2 to avoid interference.

[0057] When the patch welding operation on the reverse side is completed, the output end of the electric push rod 4 85 moves upward, driving the side of the unloading auxiliary plate 86 close to the unloading guide plate 93 to descend, the unloading auxiliary plate 86 tilts to the right, and the driving member 3 91 slides close to the gear 2 63 until it meshes with the gear 2 63. The rotation of the gear 2 63 drives the fan-shaped limit plate 65 to rotate, and the fan-shaped limit plate 65 releases the restriction of the PCB board. The PCB board slides along the unloading auxiliary plate 86 to the top wall of the unloading guide plate 93 on the lower right side, and then slides along the top wall of the unloading guide plate 93 to the second conveyor belt 22, and unloads along the second conveyor belt 22. The unloading auxiliary plate 86 and the unloading guide plate 93 cooperate to play a buffering role to prevent the PCB board from being bumped and damaged during the unloading process. After unloading is completed, the driving member 2 88 moves to the right to drive the adjustment rod 32 and the flip frame 82 to reset, and then the driving member 2 88 moves upward to avoid meshing with the gear 3 87 on the corresponding adjustment rod 32 again. The surfaces of the unloading auxiliary plate 86 and the unloading guide plate 93 that are in contact with the PCB board may be provided with balls for reducing friction, so as to prevent the PCB board from being worn during the unloading process.

[0058] When the fixed conveying mechanism 3 needs to turn, it rotates to the left side of the unloading guide plate 93 to drive the left side of the unloading guide plate 93 to rotate a certain angle around the torsion spring rod connected between the support frame 92 until the unloading guide plate 93 no longer blocks the fixed conveying mechanism 3, and the unloading guide plate 93 is reset by the torsion spring rod.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An SMT loading machine with a flip conveying mechanism, comprising a base (1) and a fixed conveying mechanism (3), characterized in that: The top wall of the base (1) is provided with a first conveyor belt (21) and a second conveyor belt (22) from left to right, and the left part of the top wall of the base (1) has two first conveyor belts (21) that slide relatively forward and backward, and the first conveyor belt (21) is composed of an L-shaped seat 1, an L-shaped seat 2, and a moving part installed between the L-shaped seat 1 and the L-shaped seat 2; The first conveyor belt (21) is provided with a fixed conveying mechanism (3) and a size adjustment mechanism (4), and the fixed conveying mechanism (3) includes a T-shaped frame (31), and a plurality of T-shaped frames (31) corresponding to each other are evenly fixed on the top walls of the movable parts of the two first conveyor belts (21) arranged opposite to each other in the front and rear, and the tops of the T-shaped frames (31) are rotatably connected with adjustment rods (32), and the adjustment rods (32) are composed of a cross bar with a slot in the middle, an L-shaped plate fixed to the bottom wall of the cross bar, and a rotating shaft fixed to the side wall of the L-shaped plate and rotatably connected to the top of the T-shaped frame (31); A gear 1 (33) is rotatably connected in the crossbar slot of the adjusting rod (32), and the front and rear side walls of the gear 1 (33) are meshedly connected with a tooth plate 1 (34), and the side wall of the tooth plate 1 (34) is fixedly connected with an adjusting member 1 (35), and the two adjusting members 1 (35) are sleeved and slidably connected to the left and right ends of the crossbar of the adjusting rod (32), and an adjusting cross bar (36) is fixed to the outer wall of the adjusting member 1 (35) away from the T-shaped frame (31), and an adjusting member 2 (37) is sleeved between the two corresponding adjusting cross bars (36) at the front and rear, and the adjusting cross bar (36) is slidably connected to the inner wall of the adjusting member 2 (37), and a limiting strip 1 is fixed to the right part of the top wall of the adjusting member 2 (37) between the two adjusting cross bars (36) at the right part; The first conveyor belt (21) is provided with a loading mechanism (5), a fixing mechanism (6) for cooperating with the fixing conveyor mechanism (3) to limit and flip the PCB board during movement, a patch station 1 (7) and a patch auxiliary mechanism (8) for preventing components from falling off during the flipping process of the PCB board, and the second conveyor belt (22) is provided with a unloading mechanism (9).

2. The SMT loading machine with a flipping conveying mechanism according to claim 1, characterized in that: The two L-shaped seats (2) of the first conveyor belts (21) are slidably connected to each other, and the size adjustment mechanism (4) comprises an adjustment unit (41) for front-to-back size adjustment and an adjustment unit (42) for left-to-right size adjustment.

3. The SMT loading machine with a flipping conveying mechanism according to claim 2, characterized in that: The adjustment unit 1 (41) comprises a support plate 1 (411), and a support plate 2 (412) and two support plates 1 (411) are respectively arranged at the rear and front of the top wall of the base (1), a motor (413) is installed between the two support plates 1 (411), and a bidirectional screw rod (414) is fixed to the rear side of the output end of the motor (413), the lower part of the L-shaped seat of the two first conveyor belts (21) is respectively threadedly connected to the front and rear parts of the bidirectional screw rod (414), and the front and rear ends of the bidirectional screw rod (414) are respectively rotatably connected to the rear side wall of the support plate 1 (411) and the front side wall of the support plate 2 (412).

4. The SMT loading machine with a flipping conveying mechanism according to claim 2, characterized in that: The adjusting unit 2 (42) comprises an electric push rod 1 (421), and the two L-shaped seats 1 close to the side walls of the first conveyor belt (21) are both installed with electric push rods 1 (421), and the output end of the electric push rod 1 (421) is fixed with a driving member 1 (422), and the driving member 1 (422) is composed of a vertical plate connected to the electric push rod 1 (421), a roller frame fixed on the vertical plate, and a horizontal roller rotatably connected to the roller frame, and the side wall of the vertical plate to which the roller frame is fixed is fixed with a baffle bar 1 (423), and the bottom wall of the adjusting member 1 (35) on the left part of the cross bar of the adjusting rod (32) is fixed with a baffle bar 2 (426) corresponding to the baffle bar 1 (423).

5. The SMT loading machine with a flipping conveying mechanism according to claim 1, characterized in that: The bottom wall of the adjusting member 1 (35) is slidably connected to a pushing member (424) in the front and rear directions, and the pushing member (424) is composed of a wedge block 1 and a fixing block connected to the wedge block 1 through a spring 1 and fixed to the bottom wall of the adjusting member 1 (35), and a locking member (425) is slidably connected to the bottom wall of the overlapping portion of the adjusting rod (32) and the adjusting member 1 (35) in the upper and lower directions; The locking member (425) is composed of a wedge block 2 matched with the pushing member (424), an inverted T-shaped block fixed to the side wall of the wedge block 2, and a spring 2 connected between the top wall of the inverted T-shaped block and the adjusting member 1 (35), and the bottom walls of the adjusting rod (32) and the adjusting member 1 (35) are both provided with holes matched with the top of the inverted T-shaped block of the locking member (425), and the outer walls of the wedge block 1 of the pushing member (424) and the wedge block 2 of the locking member (425) on one side close to each other are both inclined.

6. The SMT loading machine with a flipping conveying mechanism according to claim 1, characterized in that: The feeding mechanism (5) comprises a feeding bin (51), a rear side wall of an L-shaped seat of the first conveyor belt (21) at the top rear part of the base (1) is fixed with the feeding bin (51), and the feeding bin (51) is composed of a round-shaped bin and a track plate fixed to the top wall of the round-shaped bin, an electric slide plate (52) is slidably connected to the inside of the round-shaped bin of the feeding bin (51) up and down, and an electric slider (53) is slidably connected to the bottom wall of the track plate of the feeding bin (51) front and back, the bottom wall of the electric slider (53) is connected to a positioning plate (55) through an electric push rod (54), and an electric suction cup (57) is installed on the bottom wall of the positioning plate (55), and the bottom wall of the positioning plate (55) is provided with positioning holes (56) in a matrix shape.

7. The SMT loading machine with a flipping conveying mechanism according to claim 6, characterized in that: The fixing mechanism (6) comprises a fixing plate (61), the adjacent side walls of the two L-shaped seats of the first conveyor belt (21) are fixedly connected with the fixing plate (61), and two racks (62) are distributed on the left and right sides of the fixing plate (61) close to the adjusting member (35), and there is a height difference between the two racks (62), the top wall of the adjusting member (35) is rotatably connected with a positioning shaft (64), and the side wall of the positioning shaft (64) is fixed with a gear (63) and a fan-shaped limiting plate (65) from top to bottom, the top wall height of the fan-shaped limiting plate (65) is lower than the bottom wall height of the fixing plate (61), and the bottom wall of the fan-shaped limiting plate (65) is fixed with a limiting strip (63), the gears (63) on the two adjusting members (35) on the side wall of the same adjusting rod (32) correspond to the two racks (62) respectively, and the positioning hole (56) corresponds to the positioning shaft (64).

8. The SMT loading machine with a flipping conveying mechanism according to claim 7, characterized in that: The patch auxiliary mechanism (8) includes a patch station 2 (81), and the patch station 2 (81) located on the right side of the patch station 1 (7) is installed on the right part of the top wall of the L-shaped seat of the first conveyor belt (21), and the patch station 2 (81) is located on the right side of the patch station 1 (7), and the inner wall of the patch station 2 (81) is symmetrically provided with arc-shaped slide rails, and the arc-shaped slide rails are slidably connected to the flip frame (82), and the bottom wall of the flip frame (82) is connected to the positioning plate 2 (84) through the electric push rod 3 (83), and the positioning plate 2 (84) is connected to the bottom wall of the flip frame (82) through the electric push rod 3 (83). Plate 2 (84) is composed of a square plate connected to electric push rod 3 (83) and a U-shaped plate detachably connected to the front and rear side walls of the square plate, and the U-shaped plate of positioning plate 2 (84) is provided with a hole position adapted to the positioning shaft (64), the bottom wall of the square plate of positioning plate 2 (84) is connected to a material unloading auxiliary plate (86) via spring 3, and the edge of the bottom wall of the square plate of positioning plate 2 (84) is hingedly connected to electric push rod 4 (85) hingedly connected to the material unloading auxiliary plate (86).

9. The SMT loading machine with a flipping and conveying mechanism according to claim 8, characterized in that: A gear three (87) is fixed on the side of the rotating shaft of the adjusting rod (32) close to the patch station two (81), and a driving member two (88) is provided on the top wall of the gear three (87), and the driving member two (88) is composed of an electric slider assembly and a toothed plate two fixed to the bottom wall of the electric slider assembly.

10. The SMT board loading machine with a flipping conveying mechanism according to claim 8, characterized in that: The unloading mechanism (9) comprises a driving member three (91), and the inner wall of the patch station two (81) is slidably connected with the driving member three (91) matched with the gear two (63), and the driving member three (91) is composed of a rack two meshing with the gear two (63) and an electric slider assembly driving the rack two to lift and move left and right, the top wall of the fixed part of the second conveyor belt (22) is symmetrically fixedly connected with a support frame (92) in the front and back, and the support frame (92) is rotatably connected with an unloading guide plate (93) through a torsion spring rod, the top wall of the unloading guide plate (93) is inclined to the lower right side, and the height of the left part of the top wall of the unloading guide plate (93) is lower than the height of the right side of the bottom wall of the unloading auxiliary plate (86).

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