Drying device for PCB

Abstract

The drying device comprises a drying box, two ends of the drying box are connected with sealing doors in a sliding mode, a conveying mechanism penetrates through the inner bottom of the drying box, the drying box is arranged in the middle of the conveying mechanism, a PCB bearing mechanism is fixedly connected to the conveying mechanism, and a drying mechanism and an exhaust mechanism are arranged on the drying box. Through cooperation of the conveying mechanism, the PCB bearing mechanism and the sealing door, automation of PCB drying operation is achieved, and the production efficiency is improved; according to the PCB drying device, the multiple sets of heating pipes are arranged on the inner walls of the two sides of the drying box, air conveyed by the air blower from the two sides of the drying box and a rotating assembly of the PCB are matched, all parts of the PCB are evenly dried, and the drying quality of the PCB is improved; the inclined plate of the jacking assembly is matched with the pulleys at the bottom of the sealing door, the sealing door is driven to ascend and descend when the PCB bearing mechanism enters and exits from the drying box, and the effects of reducing heat loss and maintaining the stable high-temperature environment in the drying box are achieved.

Description

Technical Field

[0001] This utility model relates to the field of PCB board manufacturing technology, specifically a drying device for PCB boards. Background Technology

[0002] In the electronics manufacturing industry, PCB boards are a key component of electronic products, and their production quality directly affects the performance and reliability of these products. Drying is a crucial step in the PCB manufacturing process. This is because, after etching, electroplating, or processes such as applying solder resist or character ink, moisture or organic solvents often remain on the PCB surface. If these are not removed promptly and effectively, they can lead to numerous serious problems.

[0003] Existing PCB drying technologies require a large amount of manual labor, resulting in low efficiency and difficulty in achieving automated production. Furthermore, existing drying equipment suffers from uneven heat distribution, leading to inconsistent heating across different parts of the PCB board. Some areas may be over-dried and damaged, while others may remain under-dried, failing to meet the production requirements for high-quality PCB boards. Moreover, existing equipment has poor airtightness, causing significant heat loss during material loading and unloading, wasting energy and making it difficult to maintain a stable drying environment. Utility Model Content

[0004] The purpose of this invention is to provide a drying device for PCB boards to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A drying device for PCB boards includes a drying chamber with sliding closed doors at both ends. A conveying mechanism runs through the bottom of the drying chamber, and the drying chamber is located in the middle of the conveying mechanism. A PCB board carrying mechanism is fixedly connected to the conveying mechanism. The drying chamber is equipped with a drying mechanism and an exhaust mechanism. The PCB board carrying mechanism consists of a moving plate, a rotating assembly, a clamping structure, and a lifting assembly.

[0007] As a further embodiment of this utility model: the drying oven is a box structure with openings at both ends, and sliding grooves are respectively provided at both ends of the drying oven. The sliding grooves are opened along the top wall of the drying oven to the bottom wall, and the closed door is slidably connected to the sliding grooves.

[0008] As a further embodiment of this utility model: a clearance portion is provided at the bottom of the closed door, and a pulley is provided at the position where the closed door contacts the lifting component, with the shaft of the pulley fixedly connected to the closed door.

[0009] As a further scheme of the utility model: the conveying mechanism includes mounting plate, connecting plate, screw rod, first motor, guide rod, screw sleeve and sliding sleeve, the mounting plate is equipped with two, two mounting plates are opposite, the bottom of mounting plate is fixedly connected with a plurality of connecting plates, the connecting plate is equipped with screw hole, is used for connecting with ground, the screw rod is rotatably connected between two mounting plates, one end of screw rod is fixedly connected with the output end of first motor, first motor is fixedly connected on mounting plate, the guide rod is opposite screw rod and is fixedly connected between two mounting plate, the screw sleeve is threadedly connected on screw rod, the sliding sleeve is slidably connected on guide rod, the screw sleeve and sliding sleeve upper end are fixedly connected with moving plate.

[0010] As a further scheme of the utility model: the rotating assembly includes second motor, rotating disc and guide ring, the second motor is fixedly connected on the bottom wall of moving plate, the output end of second motor passes through moving plate and is fixedly connected with rotating disc through rotating shaft, the bottom surface of rotating disc is fixedly connected with guide ring, the moving plate opposite guide ring is equipped with guide groove, the guide groove is slidably connected with guide ring.

[0011] As a further scheme of the utility model: the clamping structure is fixedly connected on rotating disc, the clamping structure is composed of multiple groups of clamping assemblies that are equidistantly arranged along the circumference, the clamping assembly includes two oppositely arranged clamping plates and multiple elastic clamping pieces arranged on the clamping plates, the elastic clamping piece includes a mounting slot, a spring, and a clamping column, the mounting slot is arranged on the clamping plate, a limit boss is arranged at the outlet end of the mounting slot, the spring is fixedly connected in the mounting slot, the clamping column is arranged on the outer sleeve of the spring, a folded edge is arranged at the open end of the clamping column, and a chamfer is arranged at the other end of the clamping column.

[0012] As a further scheme of the utility model: the jacking assembly includes inclined plates and a horizontal plate, four inclined plates are fixedly connected at the four corners of the moving plate, and a horizontal plate is fixedly connected between the top portions of two inclined plates.

[0013] As a further scheme of the utility model: the drying mechanism includes heating pipes, filter screens, air inlet pipes, and a blower, the heating pipes are arranged on the inner walls of both sides of the drying box, two groups of heating pipes are arranged on each side wall, air inlets are arranged on the drying box between the two groups of heating pipes, the filter screens are fixedly connected at the air inlets, the air inlets on the two side walls are connected with the blower through the air inlet pipes, and the blower is fixedly connected on the drying box.

[0014] As a further scheme of the utility model: the air exhaust mechanism includes air outlets, air outlet pipes, and a waste gas treatment box, air outlets are arranged on the top wall of the drying box, the air outlets are connected with the waste gas treatment box through the air outlet pipes, and the waste gas treatment box is fixedly connected on the drying box.

[0015] Compared with the prior art, the PCB drying device has the advantages that: the cooperation of the conveying mechanism, the PCB board bearing mechanism and the sealing door realizes the automation of the PCB board drying operation, reduces the labor input and improves the production efficiency; the uneven heat distribution and the inconsistent PCB board drying effect of the traditional drying equipment are solved by arranging the multiple groups of heating pipes on the inner walls of the two sides of the drying box, cooperating with the air conveyed from the two sides of the drying box by the air blower and the rotating assembly of the PCB board, so that the PCB board is uniformly dried in each part, and the drying quality of the PCB board is improved; the sealing door is lifted by the inclined plate of the jacking assembly and the bottom pulley of the sealing door when the PCB board bearing mechanism enters and exits the drying box, the problem that the sealing property of the drying box cannot be effectively ensured when the traditional drying equipment is loaded and unloaded is solved, the heat loss is reduced, the stable high-temperature environment in the drying box is maintained, the energy utilization rate is improved, and the drying effect is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a structural schematic view of a PCB drying device.

[0017] Fig. 2 It is a structural schematic view of a sealing door in a PCB drying device.

[0018] Fig. 3 It is a schematic view of part of the structure of a PCB drying device.

[0019] Fig. 4 It is a structural schematic view of a PCB board bearing mechanism in a PCB drying device.

[0020] Fig. 5 It is a structural schematic view of a rotating assembly in a PCB drying device.

[0021] Fig. 6 It is a structural schematic view of an elastic clamping piece in a PCB drying device.

[0022] Fig. 7 It is a structural schematic view of a PCB board bearing mechanism entering a drying box state in a PCB drying device.

[0023] As shown in the figure, the device comprises a drying box 1, a sliding groove 11, a conveying mechanism 2, a mounting plate 21, a connecting plate 22, a screw rod 23, a first motor 24, a guide rod 25, a screw sleeve 26, a sliding sleeve 27, a PCB board bearing mechanism 3, a moving plate 31, a second motor 32, a rotating disc 33, a guide ring 34, a clamping plate 35, a mounting groove 36, a spring 37, a clamping column 38, an inclined plate 39, a cross plate 310, a closing door 4, an avoiding part 41, a pulley 42, a drying mechanism 5, a heating pipe 51, a filter screen 52, an air inlet pipe 53, a blower 54, an air exhaust mechanism 6, an air outlet 61, an air outlet pipe 62, and a waste gas treatment box 63. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] Please refer to Figs. 1-7 In the embodiments of the present application, a drying device for a PCB board comprises a drying box 1, closing doors 4 are slidably connected to the two ends of the drying box 1, a conveying mechanism 2 penetrates through the bottom of the drying box 1, the drying box 1 is arranged at the middle part of the conveying mechanism 2, a PCB board bearing mechanism 3 is fixedly connected to the conveying mechanism 2, a drying mechanism 5 and an air exhaust mechanism 6 are arranged on the drying box 1, the PCB board bearing mechanism 3 is composed of a moving plate 31, a rotating assembly, a clamping structure and a jacking assembly, the jacking assembly is abutted with the closing doors 4 to drive the closing doors 4 to ascend or descend during the movement of the PCB board bearing mechanism 3 driven by the conveying mechanism 2, thereby realizing the entry and exit of the bearing mechanism 3 into or out of the drying box 1.

[0026] The drying box 1 is a box structure with two open ends, the two ends of the drying box 1 are respectively provided with sliding grooves 11, the sliding grooves 11 are arranged along the top wall to the bottom wall of the drying box 1, and the closing doors 4 are slidably connected with the sliding grooves 11. The closing doors 4 are provided with avoiding parts 41 at the bottom, and pulleys 42 are arranged at the positions where the closing doors 4 are contacted with the jacking assembly in order to make the jacking assembly jack up the closing doors 4 more smoothly, and the rotating shafts of the pulleys 42 are fixedly connected to the closing doors 4.

[0027] The conveying mechanism 2 comprises mounting plates 21, connecting plates 22, a lead screw 23, a first motor 24, a guide rod 25, a threaded sleeve 26 and a sliding sleeve 27, the mounting plates 21 are provided with two, the two mounting plates 21 are oppositely arranged, the bottom of the mounting plate 21 is fixedly connected with a plurality of connecting plates 22, the connecting plate 22 is provided with a threaded hole for connecting with the ground, the lead screw 23 is rotatably connected between the two mounting plates 21, one end of the lead screw 23 is fixedly connected with the output end of the first motor 24, the first motor 24 is fixedly connected on the mounting plate 21, the guide rod 25 is oppositely arranged with the lead screw 23 and is fixedly connected between the two mounting plates 21, the threaded sleeve 26 is threadedly connected on the lead screw 23, the sliding sleeve 27 is slidably connected on the guide rod 25, and the threaded sleeve 26 and the sliding sleeve 27 are fixedly connected with a moving plate 31 at the upper end.

[0028] The PCB board bearing mechanism 3 is composed of a moving plate 31, a rotating assembly, a clamping structure and a jacking assembly, the rotating assembly comprises a second motor 32, a rotating disc 33 and a guide ring 34, the second motor 32 is fixedly connected on the bottom wall of the moving plate 31, the output end of the second motor 32 penetrates through the moving plate 31 and is fixedly connected with the rotating disc 33 through a rotating shaft, and the bottom surface of the rotating disc 33 is fixedly connected with the guide ring 34, the moving plate 31 is provided with a guide groove 311 opposite to the guide ring 34, and the guide groove 311 is slidably connected with the guide ring 34.

[0029] The clamping structure is fixedly connected on the rotating disc 33, and the clamping structure is composed of a plurality of clamping assemblies which are equidistantly arranged in the circumferential direction, the clamping assembly comprises two oppositely arranged clamping plates 35 and a plurality of elastic clamping pieces arranged on the clamping plate 35, the elastic clamping piece comprises a mounting groove 36, a spring 37 and a clamping column 38, the mounting groove 36 is arranged on the clamping plate 35, the outlet end of the mounting groove 36 is provided with a limiting boss, the spring 37 is fixedly connected in the mounting groove 36, the spring 37 is provided with the clamping column 38, the opening end of the clamping column 38 is provided with a folded edge, when the folded edge abuts against the limiting boss, the clamping column 38 can be prevented from sliding out, and the other end of the clamping column 38 is provided with a chamfer, so that the PCB board can be conveniently inserted.

[0030] The jacking assembly comprises inclined plates 39 and a cross plate 310, the inclined plates 39 are provided with four, which are fixedly connected at the four corners of the moving plate 31, and the cross plate 310 is fixedly connected between the top of the two inclined plates 39. When the conveying mechanism 2 is started to drive the PCB board bearing mechanism 3 to move towards the drying box 1, the inclined plate 39 first contacts the pulley 42 on the closing door 4, with the inclined plate 39 gradually moving towards the drying box 1, the closing door 4 is gradually lifted, and the PCB board bearing mechanism 3 can gradually enter the drying box 1, when the inclined plate 39 at the rear side moves to contact the pulley 42, the closing door 4 gradually falls along the track of the inclined plate 39 until it is closed, so that the drying box 1 is in a closed state and the loss of heat is reduced.

[0031] The drying mechanism 5 comprises heating pipes 51, filter screens 52, air inlet pipes 53 and air blowers 54, the heating pipes 51 are arranged on the inner walls of the two sides of the drying box 1, two groups of heating pipes 51 are arranged on each side inner wall, air inlets are formed on the drying box 1 between the two groups of heating pipes 51, the filter screens 52 are fixedly connected to the air inlets, the air inlets on the two side walls are connected with the air blowers 54 through the air inlet pipes 53, and the air blowers 54 are fixedly connected to the drying box 1.

[0032] The air exhaust mechanism 6 comprises air outlets 61, air outlet pipes 62 and waste gas treatment boxes 63, the air outlets 61 are formed on the top wall of the drying box 1, the air outlets 61 are connected with the waste gas treatment boxes 63 through the air outlet pipes 62, the waste gas treatment boxes 63 are fixedly connected to the drying box 1, and the waste gas treatment boxes 63 are prior art and used for treating the exhaust gas to avoid pollution.

[0033] The working principle of the utility model is: the PCB to be dried is placed on the clamping assembly of the clamping structure by the external feeding mechanism, the clamping column 38 of the elastic clamping piece on the clamping plate 35 is used for fixing the PCB, since the clamping column 38 is provided with a chamfer at one end, the PCB is conveniently inserted, and the spring 37 provides elastic force after being inserted, so that the PCB is stably clamped; then the first motor 24 is started, the first motor 24 drives the screw rod 23 to rotate, the screw rod 23 drives the PCB bearing mechanism 3 to start moving towards the drying box 1, when the inclined plate 39 of the jacking assembly contacts the pulley 42 on the closing door 4, the closing door 4 gradually rises along the sliding groove 11 under the action of the inclined plate 39 with the inclined plate 39 continuing to move towards the drying box 1, the PCB bearing mechanism 3 smoothly enters the drying box 1, when the inclined plate 39 at the rear side of the PCB bearing mechanism 3 entering the drying box 1 moves to contact the pulley 42, the closing door 4 gradually falls along the track of the inclined plate 39, and the drying box 1 is in a closed state, the air blower 54 of the drying mechanism 5 is started, the air blower 54 sends external air into the drying box 1 through the air inlet pipe 53 after the air is filtered through the filter screen 52, the air is heated when passing through the heating pipe 51, and the hot air performs drying treatment on the PCB in the drying box 1; then the second motor 32 is started, the second motor 32 drives the rotating disc 33 to rotate, and then drives the PCB fixed on the rotating disc 33 to rotate, so that all parts of the PCB can fully contact the hot air, and uniform drying effect is obtained, the exhaust gas generated in the drying process is discharged through the air outlet 61 on the top wall of the drying box 1, enters the waste gas treatment box 63 through the air outlet pipe 62 and is treated; after the PCB is dried, the first motor 24 drives the screw rod 23 to rotate, the PCB bearing mechanism 3 is moved out of the drying box 1, then the dried PCB is taken out, and the drying operation of the next batch of PCB is performed.

[0034] Although the utility model has been explained in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A drying apparatus for PCB boards, comprising a drying chamber (1), characterized in that, The drying box (1) has a sliding door (4) at both ends. The bottom of the drying box (1) is connected to a conveying mechanism (2). The drying box (1) is located in the middle of the conveying mechanism (2). A PCB board carrying mechanism (3) is fixedly connected to the conveying mechanism (2). The drying box (1) is equipped with a drying mechanism (5) and an exhaust mechanism (6). The PCB board carrying mechanism (3) consists of a moving plate (31), a rotating component, a clamping structure, and a lifting component.

2. The drying device for PCB boards according to claim 1, characterized in that, The drying box (1) is a box structure with openings at both ends. Slide grooves (11) are provided at both ends of the drying box (1). The slide grooves (11) are opened along the top wall of the drying box (1) to the bottom wall. The closed door (4) is slidably connected to the slide grooves (11).

3. A drying device for PCB boards according to claim 2, characterized in that, The bottom of the closed door (4) is provided with a clearance part (41), and a pulley (42) is provided at the position where the closed door (4) contacts the lifting component. The shaft of the pulley (42) is fixedly connected to the closed door (4).

4. A drying device for PCB boards according to claim 1, characterized in that, The conveying mechanism (2) includes a mounting plate (21), a connecting plate (22), a lead screw (23), a first motor (24), a guide rod (25), a screw sleeve (26), and a sliding sleeve (27). Two mounting plates (21) are provided, arranged opposite to each other. Multiple connecting plates (22) are fixedly connected to the bottom of the mounting plate (21). Threaded holes are provided on the connecting plates (22). A lead screw (23) is rotatably connected between the two mounting plates (21). 3) One end is fixedly connected to the output end of the first motor (24). The first motor (24) is fixedly connected to the mounting plate (21). A guide rod (25) is provided opposite to the lead screw (23). The guide rod (25) is fixedly connected between the two mounting plates (21). A screw sleeve (26) is threadedly connected to the lead screw (23). A sliding sleeve (27) is slidably connected to the guide rod (25). A moving plate (31) is fixedly connected to the upper end of the screw sleeve (26) and the sliding sleeve (27).

5. A drying device for PCB boards according to claim 4, characterized in that, The rotating assembly includes a second motor (32), a turntable (33), and a guide ring (34). The second motor (32) is fixedly connected to the bottom wall of the moving plate (31). The output end of the second motor (32) passes through the moving plate (31) and is fixedly connected to the turntable (33) via a rotating shaft. The guide ring (34) is fixedly connected to the bottom surface of the turntable (33). A guide groove (311) is provided on the moving plate (31) opposite to the guide ring (34). The guide groove (311) is slidably connected to the guide ring (34).

6. A drying apparatus for PCB boards according to claim 5, characterized in that, The clamping structure is fixedly connected to the turntable (33). The clamping structure consists of multiple sets of clamping components arranged equidistantly along the circumference. The clamping components include two clamping plates (35) arranged opposite each other and multiple elastic clamping members arranged on the clamping plates (35). The elastic clamping members include a mounting groove (36), a spring (37) and a clamping post (38). The mounting groove (36) is arranged on the clamping plate (35). The outlet end of the mounting groove (36) is provided with a limiting boss. The spring (37) is fixedly connected inside the mounting groove (36). The clamping post (38) is provided on the outer sleeve of the spring (37). The opening end of the clamping post (38) is provided with a folded edge, and the other end of the clamping post (38) is provided with a chamfer.

7. A drying apparatus for PCB boards according to claim 6, characterized in that, The lifting assembly includes inclined plates (39) and horizontal plates (310). There are four inclined plates (39), which are fixedly connected to the four corners of the movable plate (31). A horizontal plate (310) is fixedly connected between the tops of two inclined plates (39).

8. A drying device for PCB boards according to claim 1, characterized in that, The drying mechanism (5) includes a heating tube (51), a filter screen (52), an air inlet pipe (53), and a blower (54). The heating tube (51) is installed on the inner walls of both sides of the drying box (1). Two sets of heating tubes (51) are installed on each inner wall. An air inlet is opened on the drying box (1) between the two sets of heating tubes (51). A filter screen (52) is fixedly connected to the air inlet. The air inlets on both side walls are connected to the blower (54) through the air inlet pipe (53). The blower (54) is fixedly connected to the drying box (1).

9. A drying device for PCB boards according to claim 1, characterized in that, The exhaust mechanism (6) includes an air outlet (61), an air outlet pipe (62), and a waste gas treatment box (63). An air outlet (61) is provided on the top wall of the drying box (1). The air outlet (61) is connected to the waste gas treatment box (63) through the air outlet pipe (62). The waste gas treatment box (63) is fixedly connected to the drying box (1).

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