CN114210602A

CN114210602A - PCB (printed circuit board) receiver for reflow oven

Info

Publication number: CN114210602A
Application number: CN202111457935.9A
Authority: CN
Inventors: 李诗伶
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-03-22

Abstract

The invention discloses a PCB (printed circuit board) receiver for a reflow oven, which comprises a shell, wherein a receiving cavity, a stepping cavity and a first sliding groove are arranged in the shell, a detection device is arranged in the receiving cavity, the stepping device is arranged in the stepping cavity, a storage box is connected in the first sliding groove in a sliding manner, and a buckle device, a return device and a blocking device are arranged in the first sliding groove; the invention can carry out the rosin joint detection on the PCB which just slides out of the reflow furnace, thereby avoiding the existence of the defective goods of the rosin joint, improving the production efficiency of a factory, simultaneously, the rosin joint PCB can be automatically pushed out and automatically pushed out through the hydraulic cylinder, avoiding the need of manually standing by the reflow furnace to sort the PCB constantly, reducing the labor cost of the factory, improving the production efficiency, carrying out the air cooling treatment in the process of transporting the PCB through the fan, and finally, avoiding the problems of missing and excessive placement of the storage box through the stop block.

Description

PCB (printed circuit board) receiver for reflow oven

Technical Field

The invention relates to the technical field of reflow oven equipment, in particular to a PCB (printed circuit board) receiver for a reflow oven.

Background

The following drawbacks exist in the current reflow oven apparatus:

firstly, no corresponding equipment exists, the PCB can be automatically received at a plate outlet of the reflow oven, manual sorting is needed, the production cost and the labor cost of a factory are increased, and the manual working strength is increased;

secondly, the temperature of the PCB which just flows out of the reflow oven is too high, and the PCB with the too high temperature can scald hands when the hands hold the PCB;

thirdly, need carry out the rosin joint to PCB board later stage and detect, increased the production time of mill, reduced the production efficiency of mill.

Disclosure of Invention

The invention aims to provide a PCB receiver for a reflow oven, which is used for overcoming the defects in the prior art.

The PCB receiver for the reflow oven comprises a shell, wherein a receiving cavity inclining downwards is arranged in the shell, and a detection device for detecting whether a PCB is in a faulty welding state is arranged on the bottom wall of the receiving cavity;

the rear side wall of the receiving cavity at the front side of the detection device is provided with a first pushing cavity communicated with the receiving cavity, the rear side wall of the first pushing cavity is fixedly provided with a first hydraulic cylinder, the first hydraulic cylinder is provided with a first telescopic rod facing the receiving cavity, the first telescopic rod is fixedly provided with a first push plate, the front side wall of the receiving cavity is provided with a waste cavity which horizontally corresponds to the first pushing cavity and is smoothly connected with the receiving cavity, the waste cavity penetrates through the front side wall of the receiving cavity and obliquely and downwardly extends out of the front side wall of the casing, the front side wall of the receiving cavity at the rear side of the detection device is provided with a second pushing cavity communicated with the receiving cavity, the front side wall of the second pushing cavity is provided with a second hydraulic cylinder, the second hydraulic cylinder is provided with a second telescopic rod facing the receiving cavity, and the second push plate is fixedly provided on the second telescopic rod, a stepping cavity horizontally corresponding to the second pushing cavity is arranged in the shell on the right side of the receiving cavity, and a stepping device is arranged in the stepping cavity;

a first sliding groove penetrating through the top wall of the machine shell is formed in the machine shell on the rear side of the stepping cavity, a second sliding groove which is respectively communicated with the first sliding groove and the stepping cavity is formed between the first sliding groove and the stepping cavity, an inclined sliding plate is fixedly arranged on the bottom wall of the second sliding groove, a storage box for storing a PCB is slidably connected in the first sliding groove, five storage cavities with openings facing the second sliding groove are formed in the storage box at equal intervals, and buckling devices which are symmetrical in left and right positions are arranged on the left and right side walls of the first sliding groove;

the bottom wall of the storage box is provided with a restoring device which is symmetrical in left and right positions;

the storage box is characterized in that a push-out cavity communicated with the first sliding groove and extending to the outer wall of the right side of the casing is arranged below the first sliding groove, and a push-out device for pushing out the storage box is arranged in the front side wall of the push-out cavity.

Optionally, the detection device including set firmly in receive the lift groove on the chamber diapire, set firmly first motor on the lift groove left side wall, first motor installation first axis of rotation forward, first gear has set firmly on the first axis of rotation, the stopper has set firmly on the lift groove right side wall, sliding connection has the baffle on the stopper, the pin has set firmly on the baffle right side wall, first rack has set firmly on the pin right side wall, first rack with first gear engagement.

Therefore, whether the PCB which just slides out of the reflow furnace is in the false soldering can be detected, and the occurrence of defective products is avoided.

Optionally, step-by-step device including the hinge connect in dead lever on the wall of step-by-step chamber right side, the dead lever left end has set firmly first connecting rod, the second motor has set firmly on the step-by-step chamber diapire of dead lever front side, the second axis of rotation towards the left is installed to the second motor, the second connecting rod has set firmly on the second axis of rotation, first connecting rod with the hinge is connected with the third connecting rod between the second connecting rod, the bracing piece has set firmly on the third connecting rod, bracing piece upper end has set firmly the bottom plate, the bottom plate top surface equidistant five movable plates that have set firmly, step-by-step chamber lateral wall has set firmly the support, five the movable plate is located in the support, and with support sliding connection, install the fan on the step-by-step chamber roof, support rear side top surface with in the second sliding tray slide top surface smooth connection.

Therefore, the PCB just coming out of the reflow oven can be cooled, and the overheating of the PCB is avoided.

Optionally, the fastening device includes a third sliding groove fixedly disposed in the left and right side walls of the first sliding groove, five fourth sliding grooves which are communicated with the third sliding groove and the first sliding groove are arranged between the third sliding groove and the first sliding groove at equal intervals, a stop block is connected on the bottom wall of the fourth sliding groove in a sliding way, a second rack is fixedly arranged on the side wall of the third sliding groove far away from the first sliding groove, a sliding block is connected in the third sliding groove in a sliding manner, a third motor is fixedly arranged in the sliding block, a third rotating shaft which faces forwards is arranged on the third motor, a second gear is fixedly arranged on the third rotating shaft and meshed with the second rack, when the sliding block slides up and down in the third sliding groove, the sliding block can be abutted against the stop block and pushes the stop block to move towards the first sliding groove, and a blocking device for blocking the empty storage box from falling is arranged on the upper side of the fourth sliding groove above the third sliding groove.

Therefore, the function of only placing one PCB on one layer can be realized, and the problem of repeated placement is avoided.

Optionally, the restoring device comprises a spring which is arranged on the left and right of the bottom wall of the storage box in a symmetrical mode, a base is fixedly arranged at the lower end of the spring, an opening facing the restoring cavity of the fourth sliding groove is formed in the base, the restoring cavity is far away from the side wall of the fourth sliding groove, a fourth motor is fixedly arranged on the side wall of the fourth sliding groove, a threaded shaft is installed on the fourth motor, and a threaded block is connected to the threaded shaft in a threaded mode.

Like this, can reset the dog again, the next empty case whereabouts of being convenient for has avoided the case of case card in first sliding tray to take place.

Optionally, the blocking device comprises a rotating groove fixedly arranged above the fourth sliding groove, the rotating groove is communicated with the first sliding groove and the third sliding groove respectively, an ejector rod is fixedly arranged on the top wall of the rotating groove, the lower end of the ejector rod is hinged to a stop rod, an electric take-up pulley is arranged on the top wall of the third sliding groove, a rope is wound on the electric take-up pulley, one end of the rope is fixedly connected with one side, away from the first sliding groove, of the stop rod, and the lower end of the rope is fixedly connected with the top wall of the sliding block.

Therefore, the empty storage box can be prevented from falling, and the condition of leakage is avoided.

Optionally, the pushing device includes a third hydraulic cylinder fixedly arranged in the left side wall of the pushing cavity, and a third telescopic rod extending into the pushing cavity is mounted on the third hydraulic cylinder.

Like this, can push out the casing to the case of filling with the depositing box of PCB board, avoided needing artifical stretching into the machine with the hand and take.

The invention has the beneficial effects that:

the detection device, the stepping device, the buckling device, the returning device, the blocking device and the pushing device are arranged, so that the PCB which just slides out of the reflow furnace can be subjected to the false soldering detection, the defective products of the false soldering are avoided, the repeated detection of the PCB is avoided, the production efficiency of a factory is improved, and the production cost of the factory is reduced;

meanwhile, the hydraulic cylinder provided by the invention can automatically push out the rosin-welded PCB and automatically receive the PCB from the outlet of the reflow oven, so that the condition that the PCB needs to be manually and constantly stood beside the reflow oven to sort is avoided, the labor cost of a factory is reduced, and the production efficiency is improved;

the fan can perform air cooling treatment on the PCB in the PCB transportation process, so that the PCB is prevented from being stored in the storage box due to overheating;

finally, the stop block provided by the invention can realize the function that one PCB is put in and the storage box is descended by one layer, thereby avoiding the problems of missing and excessive storage of the storage box.

Drawings

FIG. 1 is a schematic external view of the present invention;

FIG. 2 is a schematic view of the overall structure of a PCB receiver for a reflow oven according to the present invention;

FIG. 3 is a schematic view of A-A of FIG. 2 in accordance with the present invention;

FIG. 4 is a schematic view of the detection apparatus of FIG. 2 according to the present invention;

FIG. 5 is a schematic view of B-B of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic view of C-C of FIG. 2 in accordance with the present invention;

FIG. 7 is a schematic view of the recovering device of FIG. 6 according to the present invention;

FIG. 8 is a schematic view of the latching mechanism of FIG. 6 in accordance with the present invention;

as shown in the figure:

10. a housing; 11. a receiving cavity; 12. a waste chamber; 13. a lifting groove; 14. a limiting block; 15. a baffle plate; 16. a pin; 17. a first rack; 18. a first motor; 19. a first rotating shaft; 20. a first gear; 21. a first push chamber; 22. a first hydraulic cylinder; 23. a first telescopic rod; 24. a first push plate; 25. a second push chamber; 26. a second hydraulic cylinder; 27. a second telescopic rod; 28. a second push plate; 29. a stepping chamber; 30. fixing the rod; 31. a first link; 32. a third link; 33. a second motor; 34. a second rotating shaft; 35. a second link; 36. a support bar; 37. a base plate; 38. moving the plate; 39. a support; 40. a second sliding groove; 41. a slide plate; 42. a first sliding groove; 43. a push-out cavity; 44. a storage box; 45. a storage chamber; 46. a third sliding groove; 47. a fourth sliding groove; 48. a rotating groove; 49. a second rack; 50. an electric take-up pulley; 51. a rope; 52. a top rod; 53. a gear lever; 54. a stopper; 55. a slider; 56. a third motor; 57. a third rotating shaft; 58. a second gear; 59. a spring; 60. a base; 61. a recovery chamber; 62. a fourth motor; 63. a threaded shaft; 64. a thread block; 65. a third hydraulic cylinder; 66. a third telescopic rod; 67. a fan; 68. a detection device; 69. a stepping device; 70. a buckle device; 71. a recovery device; 72. a blocking device; 73. a push-out device.

Detailed Description

The invention is further illustrated by the following examples:

referring to fig. 1-8, the PCB board receiver for the reflow oven comprises a housing 10, wherein a receiving cavity 11 is formed in the housing 10, the receiving cavity 11 is inclined downward, and a detection device 68 for detecting whether a PCB board is cold-soldered is arranged on the bottom wall of the receiving cavity 11;

the rear side wall of the receiving cavity 11 at the front side of the detection device 68 is provided with a first pushing cavity 21 communicated with the receiving cavity 11, the rear side wall of the first pushing cavity 21 is fixedly provided with a first hydraulic cylinder 22, the first hydraulic cylinder 22 is provided with a first telescopic rod 23 facing the receiving cavity 11, the first telescopic rod 23 is fixedly provided with a first push plate 24, the front side wall of the receiving cavity 11 is provided with a waste cavity 12 horizontally corresponding to the first pushing cavity 21 and smoothly connected with the receiving cavity 11, the waste cavity 12 penetrates through the front side wall of the receiving cavity 11 and obliquely and downwardly extends to the outside of the front side wall of the casing 10, the front side wall of the receiving cavity 11 at the rear side of the detection device 68 is provided with a second pushing cavity 25 communicated with the receiving cavity 11, the front side wall of the second pushing cavity 25 is provided with a second hydraulic cylinder 26, the second hydraulic cylinder 26 is provided with a second telescopic rod 27 facing the receiving cavity 11, a second push plate 28 is fixedly arranged on the second telescopic rod 27, a stepping cavity 29 horizontally corresponding to the second pushing cavity 25 is arranged in the casing 10 on the right side of the receiving cavity 11, and a stepping device 69 is arranged in the stepping cavity 29;

a first sliding groove 42 penetrating through the top wall of the machine shell 10 is arranged in the machine shell 10 at the rear side of the stepping cavity 29, a second sliding groove 40 respectively communicated with the first sliding groove 42 and the stepping cavity 29 is arranged between the first sliding groove 42 and the stepping cavity 29, an inclined sliding plate 41 is fixedly arranged on the bottom wall of the second sliding groove 40, a storage box 44 for storing a PCB is slidably connected in the first sliding groove 42, five storage cavities 45 with openings facing the second sliding groove 40 are arranged in the storage box 44 at equal intervals, and buckling devices 70 with symmetrical left and right positions are arranged on the left and right side walls of the first sliding groove 42;

the bottom wall of the storage box 44 is provided with a restoring device 71 which is symmetrical in left and right positions;

a push-out cavity 43 communicated with the first sliding groove 42 and extending to the outer wall of the right side of the casing 10 is arranged below the first sliding groove 42, and a push-out device 73 for pushing out the storage box 44 is arranged in the front side wall of the push-out cavity 43.

Advantageously, the detecting device 68 includes a lifting groove 13 fixedly disposed on the bottom wall of the receiving cavity 11, a first motor 18 is fixedly disposed on a left side wall of the lifting groove 13, the first motor 18 is provided with a first forward rotating shaft 19, a first gear 20 is fixedly disposed on the first rotating shaft 19, a limit block 14 is fixedly disposed on a right side wall of the lifting groove 13, a baffle plate 15 is slidably connected to the limit block 14, a pin 16 is fixedly disposed on a right side wall of the baffle plate 15, a first rack 17 is fixedly disposed on a right side wall of the pin 16, the first rack 17 is engaged with the first gear 20, when the first motor 18 is started, the first motor 18 drives the first gear 20 to rotate through the first rotating shaft 19, and the first gear 20 drives the pin 16 and the baffle plate 15 to ascend through being engaged with the first rack 17.

Advantageously, the step device 69 comprises a fixed rod 30 hinged to the right side wall of the step cavity 29, a first connecting rod 31 is fixedly arranged at the left end of the fixed rod 30, a second motor 33 is fixedly arranged on the bottom wall of the step cavity 29 at the front side of the fixed rod 30, a second rotating shaft 34 facing to the left is mounted on the second motor 33, a second connecting rod 35 is fixedly arranged on the second rotating shaft 34, a third connecting rod 32 is hinged between the first connecting rod 31 and the second connecting rod 35, a supporting rod 36 is fixedly arranged on the third connecting rod 32, a bottom plate 37 is fixedly arranged at the upper end of the supporting rod 36, five moving plates 38 are fixedly arranged on the top surface of the bottom plate 37 at equal intervals, a bracket 39 is fixedly arranged on the side wall of the step cavity 29, the five moving plates 38 are positioned in the bracket 39 and slidably connected with the bracket 39, a fan 67 is mounted on the top wall of the step cavity 29, the top surface at the rear side of the bracket 39 is smoothly connected with the top surface of the sliding plate 41 in the second sliding groove 40, when the second motor 33 is started, the second motor 33 drives the second connecting rod 35 to rotate through the second rotating shaft 34, the second connecting rod 35 drives the supporting rod 36 to move left and right through the third connecting rod 32, and the supporting rod 36 drives the five moving plates 38 to move through the bottom plate 37.

Advantageously, the fastening device 70 includes a third sliding groove 46 fixed in the left and right side walls of the first sliding groove 42, five fourth sliding grooves 47 communicating with the third sliding groove 46 and the first sliding groove 42 are provided between the third sliding groove 46 and the first sliding groove 42 at equal intervals, a stop 54 is slidably connected to the bottom wall of the fourth sliding groove 47, a second rack 49 is fixed on the side wall of the third sliding groove 46 away from the first sliding groove 42, a slider 55 is slidably connected to the third sliding groove 46, a third motor 56 is fixed in the slider 55, a forward third rotating shaft 57 is installed on the third motor 56, a second gear 58 is fixed on the third rotating shaft 57, the second gear 58 is engaged with the second rack 49, the slider 55 can press against the stop 54 and push the stop 54 to move towards the first sliding groove 42 when sliding up and down in the third sliding groove 46, a blocking device 72 for blocking the empty storage box 44 from falling is arranged on the upper side of the upper fourth sliding groove 47, when the third motor 56 is started, the third motor 56 drives the second gear 58 to rotate through the third rotating shaft 57, and the second gear 58 drives the sliding block 55 to move up and down through being meshed with the second rack 49.

Advantageously, the restoring device 71 includes a spring 59 symmetrically disposed on the left and right of the bottom wall of the storage box 44, a base 60 is fixedly disposed at the lower end of the spring 59, a restoring chamber 61 with an opening facing the fourth sliding groove 47 is disposed in the base 60, a fourth motor 62 is fixedly disposed on the sidewall of the restoring chamber 61 away from the fourth sliding groove 47, a threaded shaft 63 is mounted on the fourth motor 62, a threaded block 64 is threadedly connected to the threaded shaft 63, when the fourth motor 62 is started, the fourth motor 62 drives the threaded block 64 to move through the threaded shaft 63, and the threaded block 64 pushes the stopper 54 in the first sliding groove 42 and pushes the stopper 54 back into the fourth sliding groove 47.

Advantageously, the blocking device 72 includes a rotating groove 48 fixed on the upper side of the fourth sliding groove 47, the rotating groove 48 is respectively communicated with the first sliding groove 42 and the third sliding groove 46, a top wall of the rotating groove 48 is fixedly provided with a top rod 52, a stop rod 53 is hinged to the lower end of the top rod 52, an electric take-up pulley 50 is installed on the top wall of the third sliding groove 46, a rope 51 is wound on the electric take-up pulley 50, one end of the rope 51 is fixedly connected with one side of the stop rod 53 far away from the first sliding groove 42, the lower end of the rope 51 is fixedly connected with the top wall of the sliding block 55, and when the electric take-up pulley 50 is started, the sliding block 55 moves downwards, and the sliding block 55 pulls the rope 51 and drives the stop rod 53 to rotate through the rope 51.

Advantageously, said ejection means 73 comprise a third hydraulic cylinder 65 fixed in the left side wall of said ejection chamber 43, said third hydraulic cylinder 65 being fitted with a third telescopic rod 66 extending into said ejection chamber 43, said third hydraulic cylinder 65 being extended by said third telescopic rod 66 when said third hydraulic cylinder 65 is activated.

The invention relates to a PCB receiver for a reflow oven, which comprises the following working procedures:

when a PCB slides out of the reflow furnace, an operator aligns the receiving cavity 11 with a reflow furnace outlet, the receiving cavity 11 is smoothly connected with the reflow furnace outlet, when a reflowed PCB slides onto the receiving cavity 11, the first motor 18 is started, the first motor 18 drives the first gear 20 to rotate through the first rotating shaft 19, the first gear 20 drives the pin 16 and the baffle 15 to ascend through being meshed with the first rack 17, the baffle 15 blocks the PCB from sliding downwards, the pin 16 is respectively contacted and communicated with the positive electrode and the negative electrode of the PCB, the pin 16 is electrified, and the PCB is electrified and detected to detect whether the PCB is subjected to false soldering or not and whether a circuit is smooth or not;

when the PCB is unqualified, the first hydraulic cylinder 22 is started, the first hydraulic cylinder 22 drives the first push plate 24 to extend and move through the first telescopic rod 23 and pushes the unqualified PCB into the waste product cavity 12, and the unqualified PCB slides out of the waste product cavity 12 to the outside of the machine shell 10;

when the PCB is qualified, the first motor 18 is reversely started, the baffle 15 and the pins 16 descend, the detected PCB continues to slide down to the right side wall of the receiving cavity 11, the second hydraulic cylinder 26 is started, the second telescopic rod 27 drives the second push plate 28 to extend, and the second push plate 28 pushes the PCB into the stepping cavity 29 and slides to the bracket 39;

when the PCB board slides onto the bracket 39, the fan 67 is started, the second motor 33 drives the second connecting rod 35 to rotate through the second rotating shaft 34, the second connecting rod 35 drives the supporting rod 36 to move left and right through the third connecting rod 32, the supporting rod 36 drives the five moving plates 38 to move through the bottom plate 37, in the moving process, the fan 67 performs air cooling treatment on the PCB board, and the moving plates 38 drive the PCB board to gradually move backwards and slide onto the sliding plate 41;

when the PCB board slides on the sliding plate 41, the PCB board slides into the storage cavity 45 again, the electric wire rewinding wheel 50 is started, the electric wire rewinding wheel 50 loosens the rope 51 in the rotating groove 48, the stop lever 53 rotates, the storage box 44 above the first sliding groove 42 slides downwards, the third motor 56 is started, the third motor 56 drives the second gear 58 to rotate through the third rotating shaft 57, the second gear 58 drives the sliding block 55 to move downwards through meshing with the second rack 49, the sliding block 55 pushes the uppermost stop block 54 into the first sliding groove 42, and when the two stop blocks 54 block the downward-sliding storage box 44, the third motor 56 and the electric wire rewinding wheel 50 stop operating;

when a PCB board is completely slid into the storage cavity 45, the fourth motor 62 is activated, the fourth motor 62 drives the screw block 64 to move into the first sliding groove 42 through the screw shaft 63, the screw block 64 pushes the stopper 54 in the first sliding groove 42 back into the fourth sliding groove 47, the electric take-up pulley 50 and the third motor 56 are activated again, the above movement is repeated, and the storage box 44 moves down one unit of the fourth sliding groove 47 again;

when the five storage cavities 45 in the storage box 44 are all filled with PCB boards, the third motor 56 and the electric take-up pulley 50 are reversely started, the slide block 55 moves to the uppermost position of the third sliding groove 46 again, the storage box 44 slides down to the bottom wall of the push-out cavity 43, the third hydraulic cylinder 65 is started, the third hydraulic cylinder 65 pushes the storage box 44 filled with PCB boards through the third telescopic rod 66 and pushes the right side wall of the machine shell 10 out of the left side of the push-out cavity 43, and an operator collects and places the storage box 44 filled with PCB boards from the right side of the push-out cavity 43.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It will be appreciated by those skilled in the art that changes could be made to the embodiments described above without departing from the broad inventive concept thereof. All falling within the scope of protection of the present invention. The protection scheme of the invention is subject to the appended claims.

Claims

1. A PCB board receiver for reflow oven, includes casing (10), its characterized in that: a receiving cavity (11) which is inclined downwards is arranged in the shell (10), and a detection device (68) for detecting whether the PCB is in cold joint or not is arranged on the bottom wall of the receiving cavity (11);

the rear side wall of the receiving cavity (11) at the front side of the detection device (68) is provided with a first pushing cavity (21) communicated with the receiving cavity (11), the rear side wall of the first pushing cavity (21) is fixedly provided with a first hydraulic cylinder (22), the first hydraulic cylinder (22) is provided with a first telescopic rod (23) facing the receiving cavity (11), the first telescopic rod (23) is fixedly provided with a first push plate (24), the front side wall of the receiving cavity (11) is provided with a waste cavity (12) horizontally corresponding to the first pushing cavity (21) and smoothly connected with the receiving cavity (11), the waste cavity (12) penetrates through the front side wall of the receiving cavity (11) and obliquely and downwardly extends to the outside of the front side wall of the machine shell (10), the front side wall of the receiving cavity (11) at the rear side of the detection device (68) is provided with a second pushing cavity (25) communicated with the receiving cavity (11), a second hydraulic cylinder (26) is arranged on the front side wall of the second pushing cavity (25), a second telescopic rod (27) facing the receiving cavity (11) is installed on the second hydraulic cylinder (26), a second push plate (28) is fixedly arranged on the second telescopic rod (27), a stepping cavity (29) horizontally corresponding to the second pushing cavity (25) is arranged in the casing (10) on the right side of the receiving cavity (11), and a stepping device (69) is arranged in the stepping cavity (29);

a first sliding groove (42) penetrating through the top wall of the machine shell (10) is formed in the machine shell (10) on the rear side of the stepping cavity (29), a second sliding groove (40) communicated with the first sliding groove (42) and the stepping cavity (29) is formed between the first sliding groove (42) and the stepping cavity (29), an inclined sliding plate (41) is fixedly arranged on the bottom wall of the second sliding groove (40), a storage box (44) for storing PCB plates is connected in the first sliding groove (42) in a sliding mode, five storage cavities (45) with openings facing the second sliding groove (40) are formed in the storage box (44) at equal intervals, and buckling devices (70) which are symmetrical in left and right positions are arranged on the left side wall and the right side wall of the first sliding groove (42);

the bottom wall of the storage box (44) is provided with a restoring device (71) which is symmetrical in left and right positions;

a push-out cavity (43) communicated with the first sliding groove (42) and extending to the outer wall of the right side of the machine shell (10) is arranged below the first sliding groove (42), and a push-out device (73) for pushing out the storage box (44) is arranged in the front side wall of the push-out cavity (43).

2. The PCB board receiver for the reflow oven of claim 1, wherein: detection device (68) including set firmly in lift groove (13) on receiving chamber (11) diapire, first motor (18) have set firmly on lift groove (13) left side wall, first motor (18) installation first axis of rotation (19) forward, first gear (20) have set firmly on first axis of rotation (19), stopper (14) have set firmly on lift groove (13) right side wall, sliding connection has baffle (15) on stopper (14), pin (16) have set firmly on baffle (15) right side wall, first rack (17) have set firmly on pin (16) right side wall, first rack (17) with first gear (20) meshing.

3. The PCB board receiver for the reflow oven of claim 1, wherein: the stepping device (69) comprises a fixed rod (30) hinged to the right side wall of the stepping cavity (29), a first connecting rod (31) is fixedly arranged at the left end of the fixed rod (30), a second motor (33) is fixedly arranged on the bottom wall of the stepping cavity (29) at the front side of the fixed rod (30), a second rotating shaft (34) facing the left is installed on the second motor (33), a second connecting rod (35) is fixedly arranged on the second rotating shaft (34), a third connecting rod (32) is hinged between the first connecting rod (31) and the second connecting rod (35), a supporting rod (36) is fixedly arranged on the third connecting rod (32), a bottom plate (37) is fixedly arranged at the upper end of the supporting rod (36), five moving plates (38) are fixedly arranged on the top surface of the bottom plate (37) at equal intervals, a support (39) is fixedly arranged on the side wall of the stepping cavity (29), and the five moving plates (38) are positioned in the support (39), and is connected with support (39) sliding, install fan (67) on step chamber (29) roof, support (39) rear side top surface with slide (41) top surface smooth connection in the second sliding tray (40).

4. The PCB board receiver for the reflow oven of claim 1, wherein: the buckling device (70) comprises a third sliding groove (46) fixedly arranged in the left side wall and the right side wall of the first sliding groove (42), five fourth sliding grooves (47) communicated with the third sliding groove (46) and the first sliding groove (42) are arranged between the third sliding groove (46) and the first sliding groove (42) at equal intervals, a stop block (54) is connected to the bottom wall of each fourth sliding groove (47) in a sliding mode, a second rack (49) is fixedly arranged on the side wall, far away from the first sliding groove (42), of each third sliding groove (46), a sliding block (55) is connected in the third sliding groove (46) in a sliding mode, a third motor (56) is fixedly arranged in each sliding block (55), a forward third rotating shaft (57) is installed on each third motor (56), a second gear (58) is fixedly arranged on each third rotating shaft (57), and the second gear (58) is meshed with the second rack (49), when the sliding block (55) slides up and down in the third sliding groove (46), the sliding block can be abutted against the stop block (54) and pushes the stop block (54) to move towards the inside of the first sliding groove (42), and a blocking device (72) for blocking the empty storage box (44) from falling is arranged on the upper side of the fourth sliding groove (47) above the first sliding groove.

5. The PCB board receiver for the reflow oven of claim 4, wherein: reply device (71) including set firmly in case (44) diapire bilateral position symmetry's spring (59), spring (59) lower extreme has set firmly base (60), be equipped with the opening orientation in base (60) reply chamber (61) of fourth sliding tray (47), it keeps away from to reply chamber (61) fourth motor (62) have set firmly on the lateral wall of fourth sliding tray (47), install threaded shaft (63) on fourth motor (62), threaded connection has screw block (64) on threaded shaft (63).

6. The PCB board receiver for the reflow oven of claim 4, wherein: the blocking device (72) comprises a rotating groove (48) fixedly arranged above the upper side of the fourth sliding groove (47), the rotating groove (48) is communicated with the first sliding groove (42) and the third sliding groove (46) respectively, a top rod (52) is fixedly arranged on the top wall of the rotating groove (48), a stop rod (53) is hinged to the lower end of the top rod (52), an electric take-up pulley (50) is installed on the top wall of the third sliding groove (46), a rope (51) is wound on the electric take-up pulley (50), one end of the rope (51) is fixedly connected with one side, away from the stop rod (53), of the first sliding groove (42), and the lower end of the rope (51) is fixedly connected with the top wall of the sliding block (55).

7. The PCB board receiver for the reflow oven of claim 1, wherein: the pushing device (73) comprises a third hydraulic cylinder (65) fixedly arranged in the left side wall of the pushing cavity (43), and a third telescopic rod (66) extending into the pushing cavity (43) is mounted on the third hydraulic cylinder (65).