Dryer for printed circuit board

Abstract

The utility model discloses a drying machine for a printed circuit board, which comprises a bottom plate, a box body, a box door, a support plate, a motor, a reciprocating screw rod and a fan, the top of the bottom plate is fixedly connected with the bottom of the box body, and the left side of the front surface of the box body is movably connected with the left side of the back surface of the box door through a shaft pin; the bottom of the supporting plate is fixedly connected with the right side of the top of the bottom plate. By arranging the sliding groove and the sliding block, the moving direction of the sliding block can be limited by utilizing the sliding groove, so that the first adjusting rod can move left and right between the inner walls of the second adjusting rod, the distance between the first adjusting rod and the second adjusting rod can be adjusted, and a user can place circuit boards with different lengths conveniently; the circuit board drying device solves the problems that according to the circuit board drying device, circuit boards can be evenly heated through rotation, devices for fixing the circuit boards of different sizes are not arranged, and a fixing device of the drying device cannot be adjusted, so that limitation is large, and the drying device cannot adapt to the circuit boards of various sizes.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, specifically to a dryer for printed circuit boards. Background Technology

[0002] Circuit boards, also known as printed circuit boards, are widely used in many fields as important internal components of equipment. During the wet processing of printed circuit boards, a large amount of water is sprayed onto the surface to cool it down in order to maintain the temperature. To ensure proper subsequent processing, drying equipment is used to dry the water on the surface of the printed circuit board, thus ensuring its dryness.

[0003] For example, according to the authorization announcement number CN202223405945.0, this utility model relates to the field of circuit board processing technology and provides a circuit board drying mechanism, including a base, a drying chamber fixedly connected to the top of the base, a small door rotatably connected to the left side of the drying chamber, a support frame fixedly connected to the top of the base, a motor installed on the left side of the support frame, a rotating rod fixedly connected to the output end of the motor, the rotating rod rotatably connected to the drying chamber, a mounting frame fixedly connected to one end of the rotating rod, and a driven rod fixedly connected to the outer side of the mounting frame. Through the rotation of the circuit board and the reciprocating sliding of the drying components, the equipment can not only directly dry both sides of the circuit board, but also heat the circuit board evenly, avoiding local heating of the circuit board by the drying components, which could lead to insufficient drying or damage due to local overheating, thus greatly improving the practicality of the equipment.

[0004] Based on the aforementioned patent search and the findings of existing equipment, while the aforementioned equipment can solve the problems of current drying equipment in actual use, such as the fact that printed circuit boards and drying components are mostly fixed, resulting in only one side of the printed circuit board being dried at a time, and then the printed circuit board being flipped over for drying again, making the drying process cumbersome, labor-intensive, and inefficient; moreover, the fixed drying components continuously dry only a localized area of ​​the printed circuit board, which can easily lead to localized overheating, resulting in uneven drying and even damage to the printed circuit board, causing unnecessary losses. However, while the circuit board drying device can use rotation to ensure uniform heating of the circuit board, it lacks a device for fixing circuit boards of different sizes. The fixing device of the drying device is not adjustable, which greatly limits its applicability to various sizes of circuit boards. Utility Model Content

[0005] To address the problems mentioned in the background art, the present invention aims to provide a dryer for printed circuit boards, which has the advantage of auxiliary adjustment. This solves the problem that while the circuit board drying device can use rotation to heat the circuit board evenly, it does not have a device for fixing circuit boards of different sizes. The fixing device of the drying device cannot be adjusted, which limits its adaptability to various sizes of circuit boards.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dryer for printed circuit boards, comprising a base plate, a housing, a door, a support plate, a motor, a reciprocating screw, and a fan. The top of the base plate is fixedly connected to the bottom of the housing. The left side of the front of the housing is movably connected to the left side of the back of the door via a pin. The bottom of the support plate is fixedly connected to the right side of the top of the base plate. The top of the left side of the support plate is fixedly connected to the right side of the motor. The two sides of the reciprocating screw are movably connected to the top of the two sides of the inner wall of the housing via pins. The inner wall of the fan is threadedly connected to the surface of the reciprocating screw. Both sides of the wall are provided with movable grooves, and movable blocks are slidably connected to the inner walls of the movable grooves. A first adjusting rod is slidably connected to the left side of the box body, and a second adjusting rod is slidably connected to the right side of the box body. Both sides of the inner wall of the second adjusting rod are provided with sliding grooves, and sliding blocks are slidably connected to the inner walls of the sliding grooves. The inner side of the sliding blocks is fixedly connected to both sides of the first adjusting rod. The output end of the motor is fixedly connected to the movable block near the right side of the box body. Connecting components are fixedly connected to the left side of the first adjusting rod and the right side of the second adjusting rod. Reinforcing components are movably fitted onto the surface of the movable blocks.

[0007] In a preferred embodiment of this utility model, the connecting assembly includes a connecting rod. The left side of the first adjusting rod is movably connected to the inner side of the connecting rod via a pin. The right side of the second adjusting rod is fixedly connected to the inner side of the connecting rod via a pin. A locking block is fixedly connected to the outer side of the connecting rod. A locking groove is formed on the inner side of the movable block. The inner wall of the locking groove is slidably connected to the surface of the locking block.

[0008] In a preferred embodiment of this invention, the reinforcing component includes a reinforcing sleeve, which is movably fitted onto the surface of the movable block. The inner wall of the reinforcing sleeve is threadedly connected to the surface of the connecting rod, and a reinforcing ring is fixedly connected to the inner side of the surface of the movable block.

[0009] As a preferred embodiment of this invention, the surface of the reinforcing sleeve is fixedly connected with auxiliary strips, and the auxiliary strips are arranged in a ring and are evenly distributed.

[0010] As a preferred embodiment of this utility model, an electric telescopic rod is fixedly connected to the left side of the box body, and the output end of the electric telescopic rod is fixedly connected to a movable block near the left side of the box body. A control panel is fixedly connected to the front side of the top right side of the base plate, and the control panel is electrically connected to the electric telescopic rod through a wire.

[0011] In a preferred embodiment of this utility model, a through groove is fixedly connected to the top of the first adjusting rod, a movable rod is slidably connected to the inner wall of the through groove, a pressure plate is fixedly connected to the bottom of the movable rod, a spring is movably sleeved on the bottom surface of the movable rod, a through rod is fixedly connected to the top of the movable rod, and the end of the spring away from the through rod is fixedly connected to the top of the pressure plate.

[0012] As a preferred embodiment of this invention, a protective pad is fixedly connected to the bottom of the pressure plate, and the protective pad is made of rubber.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, by setting a sliding groove and a sliding block, uses the sliding groove to restrict the movement direction of the sliding block, allowing the first adjusting rod to move left and right between the inner walls of the second adjusting rod, thereby adjusting the distance between the first adjusting rod and the second adjusting rod. This makes it convenient for users to place circuit boards of different lengths. It solves the problem that the circuit board drying device can use rotation to heat the circuit board evenly, but it does not have a device to fix circuit boards of different sizes. The fixing device of the drying device cannot be adjusted, which makes it very limited and unable to adapt to circuit boards of various sizes. This invention achieves the effect of auxiliary adjustment.

[0015] 2. This utility model, by setting a connecting component, allows the user to place the first and second adjusting rods inside the housing. First, align the end with the connecting rod with the movable block, then align the reinforcing block with the slot, and move the connecting rod towards the movable block so that the slot is fully inserted into the slot. The slot restricts the movement direction of the slot, so that when the motor drives the movable block to rotate, it will drive the second adjusting rod to rotate. Since the first adjusting rod is movably connected to the connecting rod through a shaft pin, the second adjusting rod can only drive the first adjusting rod to rotate and will not drive the movable block to the left of the first adjusting rod to rotate, thereby achieving the effect of assisting in the installation of the first and second adjusting rods.

[0016] 3. By setting up a reinforcing component, when the user moves the card block completely into the card slot, the reinforcing sleeve on the inner side of the surface of the movable block moves towards the connecting rod. When the reinforcing sleeve contacts the connecting rod, the reinforcing sleeve is rotated, so that the surface of the connecting rod is moved by the reinforcing sleeve. The reinforcing ring can then be used to prevent the reinforcing sleeve from moving completely to the surface of the connecting rod. The reinforcing sleeve 151 can fix the connecting rod and the movable block together, preventing the card block from moving out of the card slot when the second adjusting rod rotates, thereby achieving the effect of reinforcing the installation of the first adjusting rod and the second adjusting rod. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a three-dimensional cross-sectional structural diagram of the box body of this utility model;

[0019] Figure 3 For this utility model Figure 2 A in the middle is an enlarged schematic diagram of the three-dimensional structure;

[0020] Figure 4 For this utility model Figure 2 The enlarged schematic diagram of the three-dimensional structure at point B in the middle.

[0021] In the diagram: 1. Base plate; 2. Box body; 3. Box door; 4. Support plate; 5. Motor; 6. Reciprocating screw; 7. Fan; 8. Movable groove; 9. Movable block; 10. First adjusting rod; 11. Second adjusting rod; 12. Sliding groove; 13. Sliding block; 14. Connecting assembly; 141. Connecting rod; 142. Locking block; 143. Locking groove; 15. Reinforcing assembly; 151. Reinforcing sleeve; 152. Reinforcing ring; 16. Auxiliary strip; 17. Electric telescopic rod; 18. Control panel; 19. Through groove; 20. Movable rod; 21. Pressure plate; 22. Spring; 23. Through rod; 24. Protective pad. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 4As shown, the present invention provides a dryer for printed circuit boards, comprising a base plate 1, a housing 2, a door 3, a support plate 4, a motor 5, a reciprocating screw 6, and a fan 7. The top of the base plate 1 is fixedly connected to the bottom of the housing 2. The left side of the front of the housing 2 is movably connected to the left side of the back of the door 3 via a pin. The bottom of the support plate 4 is fixedly connected to the right side of the top of the base plate 1. The top of the left side of the support plate 4 is fixedly connected to the right side of the motor 5. The two sides of the reciprocating screw 6 are movably connected to the top of the two sides of the inner wall of the housing 2 via pins. The inner wall of the fan 7 is threadedly connected to the surface of the reciprocating screw 6. Movable openings are provided on both sides of the inner wall of the housing 2. The inner wall of the slot 8 is slidably connected to a movable block 9. The left side of the inside of the box 2 is slidably connected to a first adjusting rod 10, and the right side of the inside of the box 2 is slidably connected to a second adjusting rod 11. Sliding grooves 12 are provided on both sides of the inner wall of the second adjusting rod 11. Sliding blocks 13 are slidably connected to the inner wall of the sliding grooves 12. The inner side of the sliding blocks 13 is fixedly connected to both sides of the first adjusting rod 10. The output end of the motor 5 is fixedly connected to the movable block 9 near the right side of the box 2. Connecting components 14 are fixedly connected to the left side of the first adjusting rod 10 and the right side of the second adjusting rod 11. A reinforcing component 15 is movably fitted onto the surface of the movable block 9.

[0024] refer to Figure 3 The connecting assembly 14 includes a connecting rod 141. The left side of the first adjusting rod 10 is movably connected to the inner side of the connecting rod 141 via a pin. The right side of the second adjusting rod 11 is fixedly connected to the inner side of the connecting rod 141 via a pin. A locking block 142 is fixedly connected to the outer side of the connecting rod 141. A locking groove 143 is provided on the inner side of the movable block 9. The inner wall of the locking groove 143 is slidably connected to the surface of the locking block 142.

[0025] As a technical optimization of this utility model, by setting the connecting component 14, when the user needs to place the first adjusting rod 10 and the second adjusting rod 11 into the housing 2, first align the end with the connecting rod 141 with the movable block 9, then align the reinforcing block 142 with the slot 143, and move the connecting rod 141 towards the movable block 9 so that the block 142 is fully inserted into the slot 143. The slot 143 can restrict the movement direction of the block 142, so that when the motor 5 drives the movable block 9 to rotate, it will drive the second adjusting rod 11 to rotate. Since the first adjusting rod 10 is movably connected to the connecting rod 141 through the shaft pin, the second adjusting rod 11 can only drive the first adjusting rod 10 to rotate and will not drive the movable block 9 on the left side of the first adjusting rod 10 to rotate, thereby achieving the effect of assisting the installation of the first adjusting rod 10 and the second adjusting rod 11.

[0026] refer to Figure 3The reinforcement component 15 includes a reinforcement sleeve 151, which is movably sleeved on the surface of the movable block 9. The inner wall of the reinforcement sleeve 151 is threadedly connected to the surface of the connecting rod 141. A reinforcement ring 152 is fixedly connected to the inner side of the surface of the movable block 9.

[0027] As a technical optimization of this utility model, by setting up a reinforcing component 15, when the user moves the locking block 142 completely into the slot 143, the reinforcing sleeve 151 on the inner side of the surface of the movable block 9 moves towards the connecting rod 141. When the reinforcing sleeve 151 contacts the connecting rod 141, the reinforcing sleeve 151 is rotated, so that when the reinforcing sleeve 151 moves, the surface of the connecting rod 141 is prevented from moving completely to the surface of the connecting rod 141. The reinforcing sleeve 151 can fix the connecting rod 141 and the movable block 9 together, preventing the locking block 142 from moving out of the slot 143 when the second adjusting rod 11 rotates, thereby achieving the effect of reinforcing the installation of the first adjusting rod 10 and the second adjusting rod 11.

[0028] refer to Figure 3 The surface of the reinforcing sleeve 151 is fixedly connected with auxiliary strips 16, and several auxiliary strips 16 are provided and distributed in a ring at equal intervals.

[0029] As a technical optimization of this utility model, by setting auxiliary strips 16, when the user needs to rotate the reinforcing sleeve 151, the multiple auxiliary strips 16 on the surface of the reinforcing sleeve 151 can increase the friction between the user and the reinforcing sleeve 151, avoid the user from slipping when rotating the reinforcing sleeve 151, and make it easier for the user to rotate the reinforcing sleeve 151, thereby achieving the effect of assisting the rotation of the reinforcing sleeve 151.

[0030] refer to Figure 2 An electric telescopic rod 17 is fixedly connected to the left side of the housing 2. The output end of the electric telescopic rod 17 is fixedly connected to the movable block 9 near the left side of the housing 2. A control panel 18 is fixedly connected to the front side of the top right side of the base plate 1. The control panel 18 is electrically connected to the electric telescopic rod 17 through wires.

[0031] As a technical optimization of this utility model, by setting up an electric telescopic rod 17 and a control panel 18, when the user places the circuit board between the first adjusting rod 10 and the second adjusting rod 11, the control panel 18 transmits an opening electrical signal to the electric telescopic rod 17 through a guide. When the electric telescopic rod 17 receives this electrical signal, it will open and move towards the second adjusting rod 11 using the output end of the electric telescopic rod 17, thereby changing the distance between the first adjusting rod 10 and the second adjusting rod 11, thus improving the fixing effect and achieving the effect of auxiliary adjustment.

[0032] refer to Figure 4The top of the first adjusting rod 10 is fixedly connected to a through groove 19, the inner wall of the through groove 19 is slidably connected to a movable rod 20, the bottom of the movable rod 20 is fixedly connected to a pressure plate 21, the bottom of the surface of the movable rod 20 is movably sleeved with a spring 22, the top of the movable rod 20 is fixedly connected to a through rod 23, and the end of the spring 22 away from the through rod 23 is fixedly connected to the top of the pressure plate 21.

[0033] As a technical optimization of this utility model, by setting a through groove 19, a movable rod 20, a pressure plate 21, a spring 22, and a through rod 23, before the user places the circuit board on the inner wall of the first adjusting rod 10, the through rod 23 is first lifted upward. Since the through rod 23 is fixedly connected to the two movable rods 20, the movable rods 20 can move upward simultaneously. The through groove 19 can restrict the movement direction of the movable rods 20, making the movement of the movable rods 20 more stable. Since the movable rods 20 are fixedly connected to the pressure plate 21, the pressure plate 21 will move upward with the movable rods 20. When the pressure plate 21 moves, the pressure plate 21 will squeeze the spring 22 at the top of the pressure plate 21, causing the spring 22 to contract. At this time, the circuit board is placed at the bottom of the pressure plate 21 and no force is applied to the through rod 23. The rebound force of the spring 22 can make the pressure plate 21 move downward, thereby pressing the circuit board tightly, thus achieving the effect of assisting in fixing the circuit board.

[0034] refer to Figure 4 The bottom of the pressure plate 21 is fixedly connected to the protective pad 24, which is made of rubber.

[0035] As a technical optimization of this utility model, by setting a protective pad 24, when the pressure plate 21 comes into contact with the circuit board, the protective pad 24 can reduce the wear caused by the contact between the pressure plate 21 and the circuit board, and avoid the situation where the pressure plate 21 is too hard and damages the circuit board. Furthermore, by utilizing the relatively soft and wear-resistant properties of rubber, the protective pad 24 has a better protective effect and can be used for a longer period of time.

[0036] The working principle and usage process of this utility model are as follows: During use, the sliding groove 12 restricts the movement direction of the sliding block 13, allowing the first adjusting rod 10 to move left and right between the inner walls of the second adjusting rod 11. This adjusts the distance between the first adjusting rod 10 and the second adjusting rod 11, facilitating the placement of circuit boards of different lengths. When the user needs to place the first adjusting rod 10 and the second adjusting rod 11 inside the housing 2, first align the end with the connecting rod 141 with the movable block 9, then align the retaining block 142 with the retaining groove 143, and move the connecting rod 141 towards the movable block 9, so that the retaining block 142 is fully inserted into the retaining groove 143. The retaining groove 143 restricts the movement direction of the retaining block 142, causing the motor 5 to rotate the movable block 9, which in turn rotates the second adjusting rod 11. Since the first adjusting rod 10 is movably connected to the connecting rod 141 via a pin, the second adjusting rod 11 can only rotate the first adjusting rod 10 and will not rotate the movable block 9 to the left of the first adjusting rod 10. When the user places the retaining block 142 into the housing 2, the user can then place the first adjusting rod 10 into the housing 2. When the 42 is fully moved into the slot 143, the reinforcing sleeve 151 on the inner side of the surface of the movable block 9 is moved toward the connecting rod 141. When the reinforcing sleeve 151 contacts the connecting rod 141, the reinforcing sleeve 151 is rotated so that the surface of the connecting rod 141 is not completely moved when the reinforcing sleeve 151 moves. The reinforcing ring 152 can then be used to prevent the reinforcing sleeve 151 from completely moving to the surface of the connecting rod 141. The reinforcing sleeve 151 can then be used to fix the connecting rod 141 and the movable block 9 together, preventing the block from jamming when the second adjusting rod 11 rotates. When the circuit board is moved out of the slot 143, and the user places the circuit board between the first adjusting rod 10 and the second adjusting rod 11, the control panel 18 transmits an opening electrical signal to the electric telescopic rod 17 through the guide. When the electric telescopic rod 17 receives this electrical signal, it will open and move towards the second adjusting rod 11 through the output end of the electric telescopic rod 17, thereby changing the distance between the first adjusting rod 10 and the second adjusting rod 11, thus improving the fixing effect and achieving the effect of auxiliary adjustment.

[0037] In summary, this printed circuit board dryer, by setting a sliding groove 12 and a sliding block 13, allows the sliding groove 12 to restrict the movement direction of the sliding block 13, enabling the first adjusting rod 10 to move left and right between the inner walls of the second adjusting rod 11. This allows for adjustment of the distance between the first adjusting rod 10 and the second adjusting rod 11, facilitating the placement of circuit boards of different lengths by the user. This solves the problem that while the circuit board drying device can use rotation to heat the circuit board evenly, it lacks a device for fixing circuit boards of different sizes. The fixing device of the drying device is not adjustable, which limits its adaptability to various circuit board sizes.

[0038] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dryer for printed circuit boards, comprising a base plate (1), a housing (2), a door (3), a support plate (4), a motor (5), a reciprocating lead screw (6), and a fan (7), characterized in that: The top of the base plate (1) is fixedly connected to the bottom of the box body (2). The left side of the front of the box body (2) is movably connected to the left side of the back of the box door (3) via a pivot pin. The bottom of the support plate (4) is fixedly connected to the right side of the top of the base plate (1). The top of the left side of the support plate (4) is fixedly connected to the right side of the motor (5). The two sides of the reciprocating screw (6) are movably connected to the top of the two sides of the inner wall of the box body (2) via pivot pins. The inner wall of the fan (7) is threadedly connected to the surface of the reciprocating screw (6). Movable grooves (8) are provided on both sides of the inner wall of the box body (2). Movable blocks (9) are slidably connected to the inner wall of the movable grooves (8). The interior of the box body (2) A first adjusting rod (10) is movably connected to the left side, and a second adjusting rod (11) is movably connected to the right side inside the housing (2). Sliding grooves (12) are provided on both sides of the inner wall of the second adjusting rod (11). A sliding block (13) is slidably connected to the inner wall of the sliding groove (12). The inner side of the sliding block (13) is fixedly connected to both sides of the first adjusting rod (10). The output end of the motor (5) is fixedly connected to the movable block (9) near the right side of the housing (2). A connecting component (14) is fixedly connected to the left side of the first adjusting rod (10) and the right side of the second adjusting rod (11). A reinforcing component (15) is movably fitted onto the surface of the movable block (9).

2. The dryer for printed circuit boards according to claim 1, characterized in that: The connecting assembly (14) includes a connecting rod (141). The left side of the first adjusting rod (10) is movably connected to the inner side of the connecting rod (141) via a pin. The right side of the second adjusting rod (11) is fixedly connected to the inner side of the connecting rod (141) via a pin. A locking block (142) is fixedly connected to the outer side of the connecting rod (141). A locking groove (143) is provided on the inner side of the movable block (9). The inner wall of the locking groove (143) is slidably connected to the surface of the locking block (142).

3. A dryer for printed circuit boards according to claim 1, characterized in that: The reinforcement component (15) includes a reinforcement sleeve (151), which is movably sleeved on the surface of the movable block (9). The inner wall of the reinforcement sleeve (151) is threadedly connected to the surface of the connecting rod (141), and a reinforcement ring (152) is fixedly connected to the inner side of the surface of the movable block (9).

4. A dryer for printed circuit boards according to claim 3, characterized in that: The surface of the reinforcing sleeve (151) is fixedly connected with auxiliary strips (16), and there are several auxiliary strips (16) arranged in a ring at equal intervals.

5. A dryer for printed circuit boards according to claim 1, characterized in that: An electric telescopic rod (17) is fixedly connected to the left side of the box (2). The output end of the electric telescopic rod (17) is fixedly connected to the movable block (9) near the left side of the box (2). A control panel (18) is fixedly connected to the front side of the top right side of the bottom plate (1). The control panel (18) is electrically connected to the electric telescopic rod (17) through a wire.

6. A dryer for printed circuit boards according to claim 1, characterized in that: The top of the first adjusting rod (10) is fixedly connected to a through groove (19), the inner wall of the through groove (19) is slidably connected to a movable rod (20), the bottom of the movable rod (20) is fixedly connected to a pressure plate (21), the bottom of the surface of the movable rod (20) is movably sleeved with a spring (22), the top of the movable rod (20) is fixedly connected to a through rod (23), and the end of the spring (22) away from the through rod (23) is fixedly connected to the top of the pressure plate (21).

7. A dryer for printed circuit boards according to claim 6, characterized in that: The bottom of the pressure plate (21) is fixedly connected to a protective pad (24), and the protective pad (24) is made of rubber.

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