A tin dipping apparatus

Abstract

The application relates to a tin immersion device which comprises a workbench, a tin furnace arranged on the workbench, a placing frame arranged above the workbench, and moving mechanisms arranged on the left and right sides of the placing frame. The moving mechanism comprises a lifting assembly and a translation assembly. The lifting assembly comprises a connecting frame fixedly arranged on the placing frame, and a first guide rod vertically arranged on the connecting frame. After the tin immersion is completed, the air discharged from the branch pipes acts on the tin immersion position of the pin, thereby realizing the cooling of the tin, avoiding the injury of the workers, improving the safety, and improving the solidification speed of the tin through the cooling of the tin. In addition, the products are subjected to downward thrust, so that the pins on the products are all arranged on the same horizontal plane, the tin immersion depth is uniform, and the locking assembly is used to lock the pressing plate, the connecting frame and the fixed plate, thereby avoiding the tin immersion action of the products without being pressed.

Description

Technical Field

[0001] This invention relates to a tin-immersion apparatus, belonging to the field of tin-immersion technology. Background Technology

[0002] Soldering is a process of joining metals. To achieve good soldering results, the metals being soldered must be solderable. With the promotion of lead-free soldering technology, higher requirements have been placed on the solderability of components. Currently, common methods for testing component solderability include wetting force testing and visual inspection. Wetting force testing is not suitable for large-scale incoming component inspection due to its strict requirements on testing instruments and long testing time. Currently, component inspection is carried out using visual inspection methods. However, due to the lack of clear specifications and corresponding tooling, the angle and depth of component immersion in the solder bath are inconsistent, resulting in large errors in solderability testing and a low detection rate.

[0003] Chinese patent application CN115255705A discloses a solderability testing mechanism, comprising: a test platform, a flux tank and a solder pot located on the test platform, a liquid level sensor and a soldering height sensor located on the side of the solder pot; the liquid level sensor is used to measure the liquid level in the solder pot, and the soldering height sensor is used to measure the height of the position to be soldered in the workpiece; a moving module located above the test platform, the moving module being equipped with a clamp for holding the workpiece; and a controller, which is communicatively connected to the liquid level sensor, the soldering height sensor, and the moving module. This invention provides a solderability testing mechanism and method that can precisely control the solder immersion depth of the workpiece, making solderability testing standards more uniform and improving the accuracy of solderability testing. However, in the prior art, after solder immersion and when the product is removed, the solder temperature at the immersed position is high, which can easily burn workers and reduce safety.

[0004] Therefore, a tin-dipping device is needed to improve safety and prevent workers from being burned. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a tin-dipping device that improves safety and avoids burns to workers.

[0006] The technical solution adopted by the present invention to solve the above problems is as follows: a tin-immersion device, including a worktable, a tin furnace arranged on the worktable, a placement frame arranged above the worktable, and a moving mechanism arranged on both the left and right sides of the placement frame.

[0007] The moving mechanism includes a lifting component and a translation component;

[0008] The lifting assembly includes a connecting frame, which is fixedly mounted on the placement frame. A first guide rod is vertically inserted through the connecting frame. A fixing plate is fixedly mounted on the top of the first guide rod. A first spring is provided between the connecting frame and the fixing plate. The two ends of the first spring are respectively connected to the connecting block and the fixing plate. The bottom end of the first guide rod is connected to the movable part of the translation assembly. The translation assembly enables the first guide rod to move back and forth.

[0009] The connecting frame is equipped with a cooling mechanism, which includes a conduit that passes vertically through the connecting frame. The bottom end of the conduit is sealed. The conduit is located below the fixing plate. A sealing disc is provided inside the conduit. The sealing disc slides and seals with the conduit. The sealing disc is fixedly connected to the fixing plate. A connecting pipe is provided on the conduit. One end of the connecting pipe is connected to the conduit, and the other end of the connecting pipe is connected to the placement frame. The connection between the connecting pipe and the conduit is located below the sealing disc.

[0010] Preferably, the placement frame is provided with a pressing mechanism located between two fixed plates. The pressing mechanism includes a pressure plate located above the placement frame. The pressure plate is provided with two second guide rods, each corresponding to one of the two fixed plates. The bottom end of the second guide rod is fixedly connected to the placement frame, and the top end of the second guide rod is provided with a locking assembly. The locking assembly is used to lock the second guide rod to the fixed plate and the pressure plate.

[0011] Preferably, the pressure plate is provided with a plurality of clamping rods arranged in a matrix. The clamping rods pass vertically through the pressure plate, and a connecting plate is fixedly provided at the top of the clamping rod. A second spring is provided between the connecting plate and the pressure plate, and the two ends of the second spring are respectively connected to the pressure plate and the connecting plate.

[0012] Preferably, the locking assembly includes an annular groove, a rotating ring, a locking block, and two locking plates. The annular groove is coaxially disposed on the second guide rod, and the rotating ring is coaxially sleeved on the annular groove. The top and bottom of the rotating ring are respectively fitted with the top and bottom of the annular groove. The two locking plates are uniformly fixedly disposed on the outer peripheral wall of the rotating ring with the axis of the rotating ring as the center. The locking block is fixedly disposed on the top of the pressure plate, and the locking block is provided with a locking groove.

[0013] Preferably, the locking assembly further includes a positioning rod, which is vertically disposed between the fixed plate and the connecting frame. The bottom end of the positioning rod is fixedly disposed on the connecting frame, and the top end of the positioning rod abuts against the fixed plate.

[0014] Preferably, the top of the placement frame is recessed to form a placement cavity, the bottom of the placement frame is open, a placement plate is disposed in the placement cavity, the placement plate matches the placement cavity, and the placement plate is attached to the bottom of the placement cavity.

[0015] Preferably, the placement plate is provided with multiple sets of placement holes, each set of placement holes corresponding to multiple clamping rods. Each set of placement holes has two holes, with the two placement holes in the same set distributed left and right. A placement groove is provided between the two placement holes in the same set, and the placement groove is located at the top of the placement plate.

[0016] Preferably, the translation component includes a support rod parallel to the front-to-back direction, both ends of the support rod are fixedly connected to the worktable, and a slider is sleeved on the support rod, the slider being fixedly disposed at the bottom end of the first guide rod.

[0017] Preferably, a limiting ring is fitted on the first guide rod, and the limiting ring is locked to the first guide rod by screws. The limiting ring is located between the connecting frame and the slider.

[0018] Preferably, the connecting pipe includes an intermediate pipe, a transmission pipe, and multiple branch pipes. The intermediate pipe is sealed at both ends. One end of the transmission pipe is connected to the intermediate pipe, and the other end is connected to the conduit. The multiple branch pipes are distributed sequentially from front to back. One end of each branch pipe is connected to the intermediate pipe, and the other end is inserted into the placement frame.

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] This invention discloses a tin-dipping device. After tin dipping is completed, the air discharged from the branch pipe acts on the tin-dipping position of the pin, thereby cooling the tin, avoiding injury to workers, and improving safety. Moreover, cooling the tin can also increase the tin solidification speed. In addition, the product is subjected to a downward thrust, so that the pins on each product are on the same horizontal plane, which facilitates uniform tin dipping depth. Furthermore, the locking assembly locks the pressure plate, connecting frame and fixing plate, preventing the product from being tinned without being pressed tightly. Attached Figure Description

[0021] Figure 1 This is a perspective view of the first state of a tin-immersion apparatus according to the present invention;

[0022] Figure 2 This is a perspective view of the second state of a tin-immersion apparatus according to the present invention;

[0023] Figure 3 This is a perspective view of the third state of a tin-immersion apparatus according to the present invention;

[0024] Figure 4 This is a perspective view of the fourth state of a tin-immersion apparatus according to the present invention;

[0025] Figure 5 for Figure 3 The main view;

[0026] Figure 6 for Figure 3 Top view;

[0027] Figure 7 for Figure 3 The left view;

[0028] Figure 8 This is a 3D view of the connection structure between the placement frame and the connecting bracket;

[0029] Figure 9 A three-dimensional view of the cooling mechanism;

[0030] Figure 10 Exploded view of the connection structure between the pressure plate and the clamping rod;

[0031] Figure 11 for Figure 1 Enlarged view of part A;

[0032] Figure 12 for Figure 8 Enlarged view of part B;

[0033] Figure 13 This is a cross-sectional view of the locking assembly;

[0034] Figure 14 This is a schematic diagram of the connection structure between the placement board and the product;

[0035] Figure 15 A 3D view of the placement board;

[0036] Figure 16 This is a 3D model of the product.

[0037] in:

[0038] Workbench 1, solder pot 2, placement frame 3, placement plate 4, moving mechanism 5, cooling mechanism 6, pressing mechanism 7, product 8;

[0039] Placement cavity 31;

[0040] Placement hole 41, placement slot 42;

[0041] Lifting component 51, translation component 52;

[0042] Connecting frame 511, first guide rod 512, fixing plate 513, first spring 514;

[0043] Support rod 521, slider 522, limit ring 523, screw 524;

[0044] 61. Conduit 61, sealing disc 62, connecting tube 63;

[0045] Intermediate pipe 631, transmission pipe 632, branch pipe 633;

[0046] Pressure plate 71, second guide rod 72, locking assembly 73, top clamping rod 74, connecting plate 75, second spring 76;

[0047] 731 annular groove, 732 rotating ring, 733 locking block, 734 locking plate, 735 locking groove, 736 positioning rod;

[0048] Body 81, pins 82. Detailed Implementation

[0049] like Figure 1-16 As shown, a tin-immersion apparatus in this embodiment includes a workbench 1, a tin furnace 2 on the workbench 1, a placement frame 3 above the workbench 1, a placement cavity 31 formed by the top of the placement frame 3 being recessed, and an opening at the bottom of the placement frame 3. A placement plate 4 is placed inside the placement cavity 31, the placement plate 4 matching the placement cavity 31 and fitting against the bottom of the placement cavity 31. The placement plate 4 is provided with multiple sets of placement holes 41, which are arranged in a matrix. Each set of placement holes 41 has two holes, with the two holes 41 in the same set being distributed left and right. A placement groove 42 is provided between the two holes 41 in the same set, and the placement groove 42 is located at the top of the placement plate 4. Moving mechanisms 5 are provided on both the left and right sides of the placement frame 3, and the two moving mechanisms 5 are symmetrically arranged about the placement frame 3. The moving mechanisms 5 are used to realize the forward and backward and left and right movement of the placement frame 3.

[0050] The moving mechanism 5 includes a lifting component 51 and a translation component 52;

[0051] The lifting assembly 51 includes a connecting frame 511, which is fixedly mounted on the placement frame 3. A first guide rod 512 is vertically mounted on the connecting frame 511. A fixing plate 513 is fixedly mounted on the top end of the first guide rod 512. A first spring 514 is provided between the connecting frame 511 and the fixing plate 513. The two ends of the first spring 514 are respectively connected to the connecting block and the fixing plate 513.

[0052] The first guide rod 512 is provided with a scale;

[0053] The translation component 52 includes a support rod 521, which is parallel to the front-back direction. Both ends of the support rod 521 are fixedly connected to the worktable 1. A slider 522 is sleeved on the support rod 521, and the slider 522 is fixedly disposed at the bottom end of the first guide rod 512.

[0054] A limiting ring 523 is fitted on the first guide rod 512. The limiting ring 523 is locked to the first guide rod 512 by a screw 524. The limiting ring 523 is located between the connecting frame 511 and the slider 522.

[0055] A cooling mechanism 6 is provided on the connecting frame 511. The cooling mechanism 6 includes a conduit 61 that passes vertically through the connecting frame 511. The bottom end of the conduit 61 is sealed. The conduit 61 is located below the fixing plate 513. A sealing disc 62 is provided inside the conduit 61. The sealing disc 62 is slidably and sealingly connected to the conduit 61. The sealing disc 62 is fixedly connected to the fixing plate 513. A connecting pipe 63 is provided on the conduit 61. One end of the connecting pipe 63 is connected to the conduit 61, and the other end of the connecting pipe 63 is connected to the placement frame 3. The connection point between the connecting pipe 63 and the placement frame 3 is located below the placement cavity 31, and the connection point between the connecting pipe 63 and the conduit 61 is located below the sealing disc 62.

[0056] The connecting pipe 63 includes an intermediate pipe 631, a transmission pipe 632, and multiple branch pipes 633. The two ends of the intermediate pipe 631 are sealed. One end of the transmission pipe 632 is connected to the intermediate pipe 631, and the other end of the transmission pipe 632 is connected to the conduit 61. The multiple branch pipes 633 are distributed sequentially from front to back. One end of each branch pipe 633 is connected to the intermediate pipe 631, and the other end of each branch pipe 633 is inserted into the placement frame 3.

[0057] A clamping mechanism 7 is provided on the placement frame 3. The clamping mechanism 7 is located between two fixed plates 513. The clamping mechanism 7 includes a pressure plate 71, which is located above the placement frame 3. Two second guide rods 72 are provided on the pressure plate 71. The two second guide rods 72 correspond one-to-one with the two fixed plates 513. The bottom end of the second guide rod 72 is fixedly connected to the placement frame 3. A locking assembly 73 is provided at the top end of the second guide rod 72. The locking assembly 73 is used to lock the second guide rod 72 with the fixed plate 513 and the pressure plate 71.

[0058] The pressure plate 71 is provided with a plurality of clamping rods 74, and the plurality of clamping rods 74 correspond one-to-one with a plurality of placement holes 41. The clamping rods 74 pass vertically through the pressure plate 71, and a connecting plate 75 is fixedly provided at the top end of the clamping rods 74. A second spring 76 is provided between the connecting plate 75 and the pressure plate 71, and the two ends of the second spring 76 are respectively connected to the pressure plate 71 and the connecting plate 75.

[0059] The locking assembly 73 includes an annular groove 731, a rotating ring 732, a locking block 733, and two locking plates 734. The annular groove 731 is coaxially mounted on the second guide rod 72. The rotating ring 732 is coaxially sleeved on the annular groove 731. The top and bottom of the rotating ring 732 are respectively fitted with the top and bottom of the annular groove 731. The two locking plates 734 are evenly fixedly mounted on the outer peripheral wall of the rotating ring 732 with the axis of the rotating ring 732 as the center. The locking block 733 is fixedly mounted on the top of the pressure plate 71. The locking block 733 is provided with a locking groove 735.

[0060] The locking assembly 73 also includes a positioning rod 736, which is vertically disposed between the fixing plate 513 and the connecting frame 511. The bottom end of the positioning rod 736 is fixedly disposed on the connecting frame 511, and the top end of the positioning rod 736 abuts against the fixing plate 513.

[0061] During operation, multiple placement boards 4 are prepared first, and multiple products 8 are placed on the placement boards 4. Each product 8 includes a main body 81 and two pins 82. The two pins 82 are located on the left and right sides of the main body 81, respectively. When placing the product 8, the main body 81 is placed in the placement slot 42, and the two pins 82 on the main body 81 pass through the placement hole 41, respectively. Then, the placement board 4 with the product 8 is placed in the placement cavity 31 of the placement frame 3, and the tinning operation is performed.

[0062] During the tinning process, this tinning apparatus has the following states:

[0063] In the first state, the placement plate 4 is located above the workbench 1 and in front of the tin furnace 2. At this time, the pressure plate 71 is locked to the top of the guide rod by the locking assembly 73, and the placement plate 4 with the product 8 is placed in the placement cavity 31 of the placement frame 3.

[0064] In the first state, the two locking plates 734 are respectively attached to the top of the fixed plate 513 and the inner wall of the top of the locking groove 735. By attaching the locking plates 734 to the inner wall of the top of the locking groove 735, the pressure plate 71 cannot move downward on the second guide rod 72, thus achieving the locking between the pressure plate 71 and the second guide rod 72. By attaching the locking plates 734 to the top of the fixed plate 513, the second guide rod 72 cannot move downward, thus achieving the locking between the second guide rod 72 and the fixed plate 513, that is, the placement frame 3 cannot move downward.

[0065] Additionally, at this time, the end of pin 82 that is furthest from the main body 81 is located below the placement frame 3;

[0066] In the second state, the distance between the pressure plate 71 and the placement frame 3 decreases, and the bottom end of the clamping rod 74 abuts against the top of the main body 81, and the second spring 76 is in a stretched state.

[0067] When transitioning from the first state to the second state, rotating the rotating ring 732 causes the two locking plates 734 to separate from the fixed plate 513 and the locking groove 735 respectively. At this time, the pressure plate 71 moves downward on the second guide rod 72 under the action of gravity and abuts against the top of the main body 81. As the pressure plate 71 continues to descend, the distance between the pressure plate 71 and the connecting plate 75 increases, which stretches the second spring 76. Through the elastic force generated by the second spring 76, the connecting plate 75 drives the top clamping rod 74 to be pushed downward, that is, the product 8 is pushed downward, so that the pins 82 on each product 8 are all on the same horizontal plane, which facilitates the uniform tinning depth in the subsequent process.

[0068] In the third state, the placement box 3 is moved directly above the tin furnace 2;

[0069] When transitioning from the second state to the third state, pushing the slider 522 to move backward on the support rod 521 can cause the placement frames 3 to move relative to each other.

[0070] In the fourth state, the height of the placement frame 3 decreases, and the pin 82 is inserted into the liquid tin in the tin bath 2 to achieve tin immersion.

[0071] When transitioning from the third state to the fourth state, the connecting frame 511 is pushed downward, which causes the placement frame 3 to descend synchronously and inserts the pin 82 into the liquid solder in the solder pot 2 to achieve immersion in solder. The descent height of the connecting frame 511 can be controlled by adjusting the height of the limiting ring 523, which controls the immersion depth.

[0072] When the connecting frame 511 descends, it drives the conduit 61 to descend synchronously. At this time, the air pressure in the conduit 61 decreases, and the air from the placement frame 3 is sequentially transported from the branch pipe 633, the intermediate pipe 631 and the transmission pipe 632 into the conduit 61.

[0073] After the tinning is completed, the fourth state will sequentially transition to the third state, the second state, and the first state. Finally, the placement board 4 and the product 8 will be removed from the placement frame 3 and replaced with another placement board 4 containing the product 8 to continue the tinning process.

[0074] During the transition from the fourth state to the third state, the air pressure in the conduit 61 is squeezed and then transported from the transmission tube 632 and the intermediate tube 631 to the branch tube 633 and then discharged. The air discharged from the branch tube 633 acts on the tin-immersion position of the pin 82, thereby cooling the tin, avoiding injury to the staff, improving safety, and also increasing the solidification speed of the tin by cooling the tin.

[0075] In summary, after the tinning is completed, the air discharged from the branch pipe 633 acts on the tinning position of the pin 82, thereby cooling the tin, preventing injury to workers and improving safety. Moreover, the cooling of the tin can also increase the solidification speed of the tin. In addition, the product 8 is subjected to a downward thrust, so that the pins 82 on each product 8 are all on the same horizontal plane, which facilitates uniform tinning depth. Furthermore, the locking assembly 73 locks the pressure plate 71, the connecting bracket 511 and the fixing plate 513, preventing the product 8 from being tinned without being pressed tightly.

[0076] In addition to the above embodiments, the present invention also includes other embodiments. All technical solutions formed by equivalent transformation or equivalent substitution should fall within the protection scope of the claims of the present invention.

Claims

1. A tin-immersion apparatus, comprising a worktable (1), a tin bath (2) disposed on the worktable (1), and a placement frame (3) disposed above the worktable (1), characterized in that: The placement frame (3) is provided with a moving mechanism (5) on both the left and right sides; The moving mechanism (5) includes a lifting assembly (51) and a translation assembly (52); The lifting assembly (51) includes a connecting frame (511), which is fixedly mounted on the placement frame (3). A first guide rod (512) is vertically mounted on the connecting frame (511). A fixing plate (513) is fixedly mounted on the top of the first guide rod (512). A first spring (514) is provided between the connecting frame (511) and the fixing plate (513). The two ends of the first spring (514) are respectively connected to the connecting frame (511) and the fixing plate (513). The bottom end of the first guide rod (512) is connected to the movable part of the translation assembly (52). The first guide rod (512) can move back and forth through the translation assembly (52). A cooling mechanism (6) is provided on the connecting frame (511). The cooling mechanism (6) includes a conduit (61). The conduit (61) passes vertically through the connecting frame (511). The bottom end of the conduit (61) is sealed. The conduit (61) is located below the fixing plate (513). A sealing plate (62) is provided inside the conduit (61). The sealing plate (62) slides and is sealed to the conduit (61). The sealing plate (62) is fixedly connected to the fixing plate (513). A connecting pipe (63) is provided on the conduit (61). One end of the connecting pipe (63) is connected to the conduit (61). The other end of the connecting pipe (63) is connected to the placement frame (3). The connection between the connecting pipe (63) and the conduit (61) is located below the sealing plate (62). The placement frame (3) is provided with a pressing mechanism (7), which is located between two fixed plates (513). The pressing mechanism (7) includes a pressure plate (71), which is located above the placement frame (3). The pressure plate (71) is provided with two second guide rods (72), which correspond one-to-one with the two fixed plates (513). The bottom end of the second guide rod (72) is fixedly connected to the placement frame (3), and the top end of the second guide rod (72) is provided with a locking assembly (73). The locking assembly (73) is used to lock the second guide rod (72) and the fixed plate (513). The locking assembly (73) is used to lock the second guide rod (72) and the pressure plate (71). The locking assembly (73) includes an annular groove (731), a rotating ring (732), a locking block (733), and two locking plates (734). The annular groove (731) is coaxially mounted on the second guide rod (72). The rotating ring (732) is coaxially sleeved on the annular groove (731). The top and bottom of the rotating ring (732) are respectively attached to the top and bottom of the annular groove (731). The two locking plates (734) are uniformly fixed around the axis of the rotating ring (732) on the outer peripheral wall of the rotating ring (732). The locking block (733) is fixedly mounted on the top of the pressure plate (71). The locking block (733) is provided with a locking groove (735). The locking assembly (73) also includes a positioning rod (736), which is vertically arranged between the fixing plate (513) and the connecting frame (511). The bottom end of the positioning rod (736) is fixedly arranged on the connecting frame (511), and the top end of the positioning rod (736) abuts against the fixing plate (513).

2. The tin-immersion apparatus according to claim 1, characterized in that: The pressure plate (71) is provided with a plurality of tightening rods (74), which are arranged in a matrix. The tightening rods (74) pass vertically through the pressure plate (71). A connecting plate (75) is fixedly provided at the top of the tightening rod (74). A second spring (76) is provided between the connecting plate (75) and the pressure plate (71). The two ends of the second spring (76) are respectively connected to the pressure plate (71) and the connecting plate (75).

3. The tin-immersion apparatus according to claim 2, characterized in that: The top of the placement frame (3) is recessed to form a placement cavity (31), the bottom of the placement frame (3) is open, a placement plate (4) is provided in the placement cavity (31), the placement plate (4) matches the placement cavity (31), and the placement plate (4) is attached to the bottom of the placement cavity (31).

4. The tin-immersion apparatus according to claim 3, characterized in that: The placement plate (4) is provided with multiple sets of placement holes (41), each set of placement holes (41) corresponds to multiple top clamping rods (74), each set of placement holes (41) has two holes, the two placement holes (41) in the same set are distributed left and right, and a placement groove (42) is provided between the two placement holes (41) in the same set, the placement groove (42) is located at the top of the placement plate (4).

5. The tin-immersion apparatus according to claim 1, characterized in that: The translation component (52) includes a support rod (521) which is parallel to the front-back direction. Both ends of the support rod (521) are fixedly connected to the worktable (1). A slider (522) is sleeved on the support rod (521), and the slider (522) is fixedly disposed at the bottom end of the first guide rod (512).

6. The tin-immersion apparatus according to claim 5, characterized in that: A limiting ring (523) is fitted on the first guide rod (512). The limiting ring (523) is locked to the first guide rod (512) by a screw (524). The limiting ring (523) is located between the connecting frame (511) and the slider (522).

7. The tin-immersion apparatus according to claim 1, characterized in that: The connecting pipe (63) includes an intermediate pipe (631), a transmission pipe (632), and multiple branch pipes (633). The two ends of the intermediate pipe (631) are sealed. One end of the transmission pipe (632) is connected to the intermediate pipe (631), and the other end of the transmission pipe (632) is connected to the conduit (61). Multiple branch pipes (633) are distributed sequentially from front to back. One end of the branch pipe (633) is connected to the intermediate pipe (631), and the other end of the branch pipe (633) is inserted into the placement frame (3).

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