Spacing-adjustable rapid tinning device applied to electric connector

Abstract

The utility model belongs to the technical field of electric connector processing, and particularly relates to a distance-adjustable quick tinning device applied to an electric connector, which comprises a clamping mechanism, a module mechanism and a tinning pot, the module mechanism drives the clamping mechanism to move up and down, the tinning pot is arranged below the clamping mechanism, and the clamping mechanism comprises two clamping pieces which are oppositely arranged. According to the technical scheme, the semi-automatic tinning device is simple in structure, flexible, adjustable, accurate and controllable, the distance between the pressing blocks can be changed, tinning quality is improved, consistency is ensured, the device can accurately control various parameters in the tinning process, and inconsistency of tinning quality caused by uneven technical levels of manual operation is eliminated; in the tin coating process of the connector, the tin coating time is accurately controlled, and the tip pulling phenomenon is effectively avoided; the intruding depth of the pins is accurately controlled, and the phenomenon that the distance between the pins of the connector is small, tin liquid flows between the pins in the tinning process, and consequently tin connection occurs between the adjacent pins is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of electrical connector processing technology, and in particular relates to a fast tinning device with adjustable pitch for use in electrical connectors. Background Technology

[0002] Connectors play a crucial role in many fields, including aviation, aerospace, electronic weaponry, shipbuilding, communications, new energy, petroleum, and rail transportation. Soldering the connector pins is a key process to ensure connector quality and reliability.

[0003] Currently, traditional soldering methods mainly rely on manual operation. During manual soldering, the risk of product quality problems increases due to the large differences in skill levels and operating habits of different operators, as well as the susceptibility of manual operation to external interference. For example, if the contact time and other parameters are not properly controlled during the soldering process, the connector contacts (pins) may experience tipping or solder bridging.

[0004] With the increasingly stringent requirements for high quality and high reliability of electronic components in the field of high-precision technology, there is an urgent need for a device that can accurately tin-plating connector pins to solve problems such as pin tipping and solder bridging that exist in the current tin-plating process. Utility Model Content

[0005] This utility model addresses the problems in the prior art by proposing the following technical solution:

[0006] An adjustable-pitch rapid soldering device for electrical connectors includes a clamping mechanism, a module mechanism that drives the clamping mechanism to move in the vertical direction, and a soldering pot disposed below the clamping mechanism. The clamping mechanism includes two clamping members disposed opposite to each other.

[0007] The clamping member has a pressure block, a rear shell, a front shell, a top cover and a compression spring. A trapezoidal cavity with an open bottom is formed between the rear shell, the front shell and the top cover. The cross-sectional width of the trapezoidal cavity increases from bottom to top, and the outer edges of the two trapezoidal cavities gradually move away from each other from bottom to top.

[0008] The upper end of the pressure block slides into the trapezoidal cavity, and the lower end extends through the opening to the outside of the trapezoidal cavity. The two pressure blocks form a clamping space for the clamping connector between their lower ends located outside the trapezoidal cavity. The compression spring is assembled between the pressure block and the top cover.

[0009] The module mechanism drives the clamping mechanism that holds the connector to move in the vertical direction, wherein the connector is held in the soldering pot for less than 1 second to complete the soldering operation.

[0010] As a preferred embodiment of the above technical solution, each of the two pressure blocks having an outwardly convex trapezoidal platform I on its close-to-each end face and an outwardly convex trapezoidal platform II on its far-to-each end face, wherein the outwardly convex trapezoidal platform I and the outwardly convex trapezoidal platform II are both distributed at the upper end of the pressure blocks.

[0011] The rear shell has a concave trapezoidal groove that matches the convex trapezoidal platform, and the front shell has a concave trapezoidal groove that matches the convex trapezoidal platform. The concave trapezoidal groove is located at the upper end of the front shell.

[0012] As a preferred embodiment of the above technical solution, the clamping mechanism further includes an adjusting member that drives the two clamping members to move closer or further apart from each other;

[0013] The adjusting component has a ball head fixing block, a rotating screw, a ball head screw and a fixed bracket. The ball head fixing block is assembled on the front shell. The ball head fixing block is rotatably engaged with the ball head screw. The ball head screw is internally threaded into the rotating screw. The rotating screw is connected to the fixed bracket.

[0014] The fixed bracket is connected to the output end of the module mechanism. The fixed bracket has a slot. After the front shell and the rear shell pass through the slot, the top cover slides with the fixed bracket.

[0015] As a preferred embodiment of the above technical solution, the upper end of the pressure block is provided with a circular boss, and the compression spring is sleeved on the circular boss;

[0016] Positioning blocks are provided on the opposite end faces of the two pressure blocks, and the positioning blocks are located outside the trapezoidal cavity.

[0017] As a preferred embodiment of the above technical solution, the top cover is provided with a knob threaded opening, and a spring preload knob is threaded into the knob threaded opening.

[0018] As a preferred embodiment of the above technical solution, the module mechanism includes two rear baffles distributed on both sides of the clamping mechanism. The rear baffles are provided with longitudinally distributed profile bodies. The upper end of the profile body is equipped with a motor mounting plate. A micro motor is mounted on the motor mounting plate. The output end of the micro motor is connected to a ball screw pair through a single-module coupling. The lower end of the ball screw pair is rotatably engaged with the rear baffles through a deep groove ball bearing.

[0019] The ball screw pair is threaded with a slide block, and a slide block support block is provided on the slide block. The profile body is provided with a micro rail pair, and the slide block support block and the micro rail pair are slidably engaged.

[0020] As a preferred embodiment of the above technical solution, a sensor frame is installed in the lower region of the profile body, an LD photoelectric switch is mounted on the sensor frame, and a sensor sheet is provided on the slide.

[0021] As a preferred embodiment of the above technical solution, anti-collision rubber is provided on the end face of the rear baffle opposite to the slide block.

[0022] As a preferred embodiment of the above technical solution, the profile body is equipped with a bearing mounting seat, the ball screw pair is rotatably engaged with the bearing mounting seat through a deep groove ball bearing, and anti-collision rubber is provided on the end face of the bearing mounting seat opposite to the slide.

[0023] As a preferred embodiment of the above technical solution, a base plate is also included, wherein the module mechanism and the tinning pot are both mounted on the upper surface of the base plate.

[0024] The beneficial effects of this utility model are as follows:

[0025] This technical solution provides a semi-automatic soldering device with a simple structure, flexible adjustment, precise control, and variable distance between pressure blocks. 1. Improve soldering quality and ensure consistency: This device can precisely control various parameters during the soldering process, eliminating inconsistencies in soldering quality caused by varying skill levels in manual operation; during connector soldering, it precisely controls the soldering time, effectively avoiding excessive solder flow on the pin surface due to prolonged contact time between the pins and the solder, thus preventing the formation of solder spikes; it precisely controls the pin penetration depth, avoiding solder bridging between adjacent pins caused by insufficient distance between connector pins and the solder flowing between pins during the soldering process.

[0026] 2. Cost reduction and efficiency improvement, and rapid processing: Compared with manual operation, the tinning operation can be completed more quickly and stably, shortening the production cycle, reducing labor costs, reducing scrap rate, reducing scrap caused by quality problems, and reducing production costs. Attached Figure Description

[0027] Figure 1 The diagram shown is a structural schematic of the adjustable pitch rapid soldering device for electrical connectors used in Embodiment 1.

[0028] Figure 2 The diagram shown is a three-dimensional structural schematic of the clamping mechanism in Embodiment 1;

[0029] Figure 3 The diagram shown is a cross-sectional view of the internal structure of the clamping mechanism in Embodiment 1;

[0030] Figure 4 The diagram shown is an exploded view of the clamping mechanism in Embodiment 1;

[0031] Figure 5 The diagram shown is a first-view structural schematic of the module mechanism in Embodiment 1;

[0032] Figure 6 The diagram shown is a second-view structural schematic of the module mechanism in Embodiment 1;

[0033] Figure 7 What is shown is Figure 6 Enlarged schematic diagram of structure A in the middle.

[0034] Reference numerals: Clamping mechanism 1; Pressure block 11; Outwardly convex trapezoidal platform one 111; Outwardly convex trapezoidal platform two 112; Circular boss 113; Positioning block 114; Rear shell 12; Inwardly concave trapezoidal groove one 121; Ball head fixing block 13; Rotating screw 14; Ball head screw 15; Fixing bracket 16; Groove 161; Front shell 17; Inwardly concave trapezoidal groove two 171; Top cover 18; Knob threaded opening 181; Compression spring 19; Spring preload knob 110; Cavity 120;

[0035] Module mechanism 2; Rear baffle 21; LD photoelectric switch 22; Sensor frame 23; Sensor sheet 24; Profile body 25; Anti-collision rubber 1 26; Deep groove ball bearing 1 27; Ball screw pair 28; Slide 29; Bearing mounting seat 210; Single module coupling 211; Motor mounting plate 212; Micro motor 213; Anti-collision rubber 214; Deep groove ball bearing 215; Slide support block 216; Micro rail pair 217;

[0036] 3. Tin-lined pots;

[0037] Base plate 4;

[0038] Connector 5. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0040] Example 1

[0041] like Figure 1 As shown, the adjustable-pitch rapid soldering device for electrical connectors includes a clamping mechanism 1, a module mechanism 2 that drives the clamping mechanism 1 to move vertically, a soldering pot 3 located below the clamping mechanism 1, and a base plate 4. The module mechanism 2 and the soldering pot 3 are all mounted on the upper surface of the base plate 4. The clamping mechanism 1, the module mechanism 2, the soldering pot 3, and the base plate 4 constitute a complete adjustable-pitch rapid soldering device for electrical connectors. In this embodiment, all components of the clamping mechanism 1 are made of stainless steel.

[0042] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, the clamping mechanism 1 includes two clamping members arranged opposite to each other; the clamping members have a pressure block 11, a rear shell 12, a front shell 17, a top cover 18 and a compression spring 19, and a trapezoidal cavity 120 with an open lower end is formed between the rear shell 12, the front shell 17 and the top cover 18, the cross-sectional width of the trapezoidal cavity 120 increases from bottom to top, and the outer edges of the two trapezoidal cavities 120 gradually move away from each other from bottom to top;

[0043] The upper end of the pressure block 11 slides into the trapezoidal cavity 120, and the lower end extends through the opening to the outside of the trapezoidal cavity 120. The two pressure blocks 11 are located between the lower ends of the trapezoidal cavity 120 to form a clamping space for clamping the connector 5. The compression spring 19 is assembled between the pressure block 11 and the top cover 18. When the pressure block 11 is pushed upward, the pressure block 11 moves towards the front shell 17, that is, the two pressure blocks 11 move away from each other. At the same time, under the action of the compression spring 19 and the weight of the pressure block 11 itself, the two pressure blocks 11 tend to move downward and move closer together, thereby achieving the effect of clamping the connector 5 and preventing the connector 5 from falling out of the clamping mechanism 1.

[0044] The module mechanism 2 drives the clamping mechanism 1 that holds the connector 5 to move in the up and down direction, wherein the connector 5 is held in the tinning pot 3 for less than 1 second to complete the tinning operation.

[0045] The adjustable-pitch rapid soldering device for electrical connectors in this technical solution involves installing the connector 5 in the clamping space during the soldering operation, manually applying flux to the pins of the connector 5, and the module mechanism 2 driving the clamping mechanism 1 to move downwards until the pins of the connector 5 are inserted into the soldering pot 3 to a predetermined length. The connector 5 is held in the soldering pot 3 for less than 1 second, and then the module mechanism 2 drives the clamping mechanism 1 to move upwards, thus completing the soldering operation of one connector 5.

[0046] This technical solution provides a semi-automatic soldering device with a simple structure, flexible adjustment, precise control, and variable distance between the pressure blocks 11. 1. Improve soldering quality and ensure consistency: This device can precisely control various parameters during the soldering process, eliminating the inconsistency in soldering quality caused by varying skill levels in manual operation; during the connector soldering process, it precisely controls the soldering time, effectively avoiding excessive solder flow on the pin surface due to prolonged contact time between the pins and the solder, thus preventing the formation of solder spikes; it precisely controls the pin penetration depth, avoiding the phenomenon of solder bridging between adjacent pins caused by the solder flowing between the pins during the soldering process when the distance between the connector pins is small.

[0047] 2. Cost reduction and efficiency improvement, and rapid processing: Compared with manual operation, the tinning operation can be completed more quickly and stably, shortening the production cycle, reducing labor costs, reducing scrap rate, reducing scrap caused by quality problems, and reducing production costs.

[0048] To achieve a sliding fit between the pressure block 11 and the cavity 120, and to meet the requirement that the two pressure blocks 11 move away from each other when the pressure block 11 moves upward, as follows: Figure 2 , Figure 3 , Figure 4 As shown, the two pressure blocks 11 are provided with a convex trapezoidal platform 111 on their close-to-each end faces, and a convex trapezoidal platform 112 on their far-to-each end faces. The convex trapezoidal platform 111 and the convex trapezoidal platform 112 are both distributed at the upper end of the pressure block 11.

[0049] The rear shell 12 is provided with a concave trapezoidal groove 121 that matches the convex trapezoidal platform 111. In order to meet the position difference of the pressure block 11 moving to the front shell 17, the concave trapezoidal groove 121 has a high depth. The front shell 17 is provided with a concave trapezoidal groove 171 that matches the convex trapezoidal platform 112. The concave trapezoidal groove 171 is distributed at the upper end of the front shell 17.

[0050] In this embodiment, the convex trapezoidal platform 111 and the concave trapezoidal groove 121 are slidably engaged, and the convex trapezoidal platform 112 and the concave trapezoidal groove 171 are slidably engaged. When the pressure block 11 is pushed upward, the pressure block 11 moves to one side of the front shell 17, that is, the two pressure blocks 11 move away from each other, and the connector 5 is placed between the two pressure blocks 11. Under the action of the compression spring 19 and the weight of the pressure block 11 itself, the two pressure blocks 11 have a tendency to move downward and move closer, thereby achieving the clamping effect on the connector 5.

[0051] Meanwhile, in this embodiment, the arrangement of the second convex trapezoidal platform 112 distributed at the upper end of the pressure block 11 and the second concave trapezoidal groove 171 distributed at the upper end of the front shell 17 limits the movement position of the pressure block 11 and prevents the pressure block 11 from detaching from the cavity 120; the arrangement of the first convex trapezoidal platform 111 distributed at the upper end of the pressure block 11 avoids affecting the clamping of the connector 5.

[0052] To broaden the applicability of this device and meet the setup requirements for soldering connectors of different specifications, such as... Figure 2 , Figure 3 , Figure 4 As shown, the clamping mechanism 1 also includes an adjusting member that moves the two clamping members closer or further apart; depending on the different widths of the rectangular electrical connectors to be processed, the distance between the two clamping members is adjusted by the adjusting member to complete the clamping operation for rectangular electrical connectors of different widths.

[0053] Specifically, the adjusting component includes a ball-head fixing block 13, a rotating screw 14, a ball-head screw 15, and a fixed bracket 16. The ball-head fixing block 13 is assembled on the front shell 17. The ball-head fixing block 13 is rotatably engaged with the ball-head screw 15. The ball-head screw 15 is internally threaded into the rotating screw 14. The rotating screw 14 is connected to the fixed bracket 16. The fixed bracket 16 is connected to the output end of the module mechanism 2. A slot 161 is provided on the fixed bracket 16. After the front shell 17 and the rear shell 12 pass through the slot 161, the top cover 18 slides with the fixed bracket 16.

[0054] Because one end of the ball-end screw 15 is threadedly engaged with the rotating screw 14, and the other end is rotatably engaged with the ball-end fixing block 13, and because the top cover 18 is slidably engaged with the fixed bracket 16, when adjusting the distance between the two clamping parts, rotating the ball-end screw 15 in the forward or reverse direction causes the two clamping parts to move closer or further apart. Taking the right clamping part as an example, rotating the ball-end screw 15 in the forward direction moves the pressure block 11 to the right, that is, the two clamping parts move further apart; rotating the ball-end screw 15 in the reverse direction moves the pressure block 11 to the left, that is, the two clamping parts move further apart. The left clamping part is arranged in the opposite way.

[0055] Meanwhile, in this embodiment, the adjusting component adopts a threaded engagement to change the distance between the two clamping components, so that the adjustment accuracy is high when the distance between the two clamping components is adjusted, ensuring the precision machining of this device.

[0056] Meanwhile, to accommodate the device's requirement to perform tinning on different connectors, such as Figure 2 , Figure 3 , Figure 4 As shown, the top cover 18 has a knob threaded opening 181, and a spring preload knob 110 is threaded into the knob threaded opening 181.

[0057] By controlling the rotation of the spring preload knob 110 at the knob thread 181, the length of the spring preload knob 110 extending into the cavity 120 is adjusted, thereby adjusting the highest position corresponding to the upper end of the compression spring 19, thus adjusting the magnitude of the preload force of the compression spring 19 to meet the requirements of applying different pressures to different connectors and achieving the best clamping effect for different connectors.

[0058] like Figure 4 As shown, a circular boss 113 is provided at the upper end of the pressure block 11, and the compression spring 19 is sleeved on the circular boss 113; the lower end of the compression spring 19 is limited to ensure the stability of the compression spring 19 inside the cavity 120, thereby ensuring the reliability of the entire device operation.

[0059] Positioning blocks 114 are provided on the opposite end faces of the two clamping blocks 11. The positioning blocks 114 are located outside the trapezoidal cavity 120. When clamping the connector 5, the upper end of the connector 5 is pressed against the positioning block 114, which limits the position of the connector 5 inside the clamping space. This facilitates the rapid and accurate positioning of the connector 5, saves processing time, and ensures processing accuracy.

[0060] To address the requirement that module mechanism 2 drives clamping mechanism 1 to move vertically, the output end of module mechanism 2 is configured to be adjustable vertically, as shown below:

[0061] like Figure 5 , Figure 6 , Figure 7 As shown, the module mechanism 2 includes two rear baffles 21 distributed on both sides of the clamping mechanism 1. The rear baffles 21 are provided with longitudinally distributed profile bodies 25. The upper end of the profile body 25 is equipped with a motor mounting plate 212. A micro motor 213 is installed on the motor mounting plate 212. The output end of the micro motor 213 is connected to a ball screw pair 28 through a single module coupling 211. The lower end of the ball screw pair 28 is rotatably engaged with the rear baffles 21 through a deep groove ball bearing 27.

[0062] The ball screw assembly 28 is threadedly fitted with a slide 29. The fixed bracket 16 in the clamping mechanism 1 is mounted on the slide 29. The slide 29 is provided with a slide support block 216. The profile body 25 is provided with a micro rail assembly 217. The slide support block 216 and the micro rail assembly 217 are slidably fitted.

[0063] In module mechanism 2, the micro motor 213 starts, driving the ball screw assembly 28 to rotate. The ball screw assembly 28 drives the slide 29 to move vertically along the micro rail assembly 217. The vertical movement of the slide 29 drives the clamping mechanism 1 to move synchronously, thus fulfilling the requirement that module mechanism 2 drives clamping mechanism 1 to move vertically. Furthermore, the method of using the micro motor 213 to drive the ball screw assembly 28 to rotate, thereby driving the slide 29 to move vertically, ensures high precision in the movement of clamping mechanism 1, guaranteeing the distance the connector 5 extends into the soldering pot 3, and thus ensuring the soldering effect.

[0064] At the same time, to further ensure the positional accuracy of the slide 29 during vertical movement, such as... Figure 5 , Figure 6 , Figure 7As shown, a sensor frame 23 is installed in the lower part of the profile body 25. An LD photoelectric switch 22 is mounted on the sensor frame 23. The distance between the LD photoelectric switch 22 and the rear baffle 21 is adjusted according to the actual situation to achieve the effect of precise soldering of the connector 5, so as not to cause too much or too little solder liquid on the connector pins during the soldering process. A sensor plate 24 is provided on the slide 29.

[0065] The LD photoelectric switch 22 and the sensing plate 24 are designed to detect and position the slide 29, ensuring the depth of the connector 5 into the tinning pot 3, thereby ensuring the tinning effect of the connector 5.

[0066] Furthermore, to ensure the stable operation of this device, shock absorption and buffering measures are adopted, mainly in the following aspects: 1. Between the slide 29 and the lower rear baffle 21, such as... Figure 5 As shown, anti-collision rubber 26 is provided on the end face of the rear baffle 21 opposite to the slide 29.

[0067] 2. Between the slide block 29 and the upper single-module coupling 211, such as Figure 5 , Figure 6 As shown, a bearing mounting seat 210 is assembled on the profile body 25. The ball screw pair 28 is rotatably engaged with the bearing mounting seat 210 through a deep groove ball bearing 215. Anti-collision rubber 214 is provided on the end face of the bearing mounting seat 210 opposite to the slide 29.

[0068] When the slide 29 moves downward to its lowest position, it contacts the anti-collision rubber 26. When the slide 29 moves upward to its highest position, it contacts the anti-collision rubber 214. The anti-collision rubber 26 and anti-collision rubber 214 play a role in vibration reduction and buffering when the slide 29 moves up and down, ensuring the smooth operation of the device and preventing vibration when the connector 5 is inserted into the tinning pot 3, which would affect the tinning operation.

[0069] The adjustable-pitch rapid soldering device for electrical connectors in this technical solution uses a module mechanism 2 as a driving device. First, the connector 5 is manually assembled onto the clamping mechanism 1. Then, flux is applied to the connector pins. The driving device drives the clamping mechanism 1 to move the connector 5 longitudinally to complete one soldering operation. In this embodiment, the soldering time and pin penetration depth are controlled by a motor to achieve precise control of various parameters in the soldering process, eliminating the problem of inconsistent soldering quality caused by varying skill levels in manual operation.

[0070] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A fast tinning device with adjustable pitch for electrical connectors, comprising a clamping mechanism (1), a module mechanism (2) for moving the clamping mechanism (1) in the vertical direction, and a tinning pot (3) disposed below the clamping mechanism (1), characterized in that, The clamping mechanism (1) includes two clamping members arranged opposite to each other; The clamping member has a pressure block (11), a rear shell (12), a front shell (17), a top cover (18), and a compression spring (19). A trapezoidal cavity (120) with an open bottom is formed between the rear shell (12), the front shell (17), and the top cover (18). The cross-sectional width of the trapezoidal cavity (120) increases from bottom to top, and the outer edges of the two trapezoidal cavities (120) gradually move away from each other from bottom to top. The upper end of the pressure block (11) is slidably engaged with the trapezoidal cavity (120), and the lower end extends through the opening to the outside of the trapezoidal cavity (120). The two pressure blocks (11) form a clamping space for the clamping connector (5) between their lower ends located outside the trapezoidal cavity (120). The compression spring (19) is assembled between the pressure block (11) and the top cover (18). The module mechanism (2) drives the clamping mechanism (1) that holds the connector (5) to move in the up and down direction, wherein the connector (5) is held in the tinning pot (3) for less than 1 second to complete the tinning operation.

2. The adjustable-pitch rapid soldering device for electrical connectors according to claim 1, characterized in that, The two pressure blocks (11) are provided with a first convex trapezoidal platform (111) on their close-to-each end faces, and a second convex trapezoidal platform (112) on their far-to-each end faces. The first convex trapezoidal platform (111) and the second convex trapezoidal platform (112) are both distributed at the upper end of the pressure block (11). The rear shell (12) is provided with a concave trapezoidal groove (121) that matches the convex trapezoidal platform (111), and the front shell (17) is provided with a concave trapezoidal groove (171) that matches the convex trapezoidal platform (112). The concave trapezoidal groove (171) is located at the upper end of the front shell (17).

3. The adjustable-pitch rapid soldering device for electrical connectors according to claim 1, characterized in that, The clamping mechanism (1) also includes an adjusting component that drives the two clamping members to move closer or further apart from each other; The adjusting component has a ball head fixing block (13), a rotating screw (14), a ball head screw (15), and a fixed bracket (16). The ball head fixing block (13) is assembled on the front shell (17). The ball head fixing block (13) is rotatably engaged with the ball head screw (15). The ball head screw (15) is internally threaded with the rotating screw (14). The rotating screw (14) is connected to the fixed bracket (16). The fixed bracket (16) is connected to the output end of the module mechanism (2). The fixed bracket (16) has a slot (161). After the front shell (17) and the rear shell (12) pass through the slot (161), the top cover (18) slides with the fixed bracket (16).

4. The adjustable-pitch rapid soldering device for electrical connectors according to claim 1, characterized in that, The upper end of the pressure block (11) is provided with a round boss (113), and the compression spring (19) is sleeved on the round boss (113); Positioning blocks (114) are provided on the opposite end faces of the two pressure blocks (11), and the positioning blocks (114) are located outside the trapezoidal cavity (120).

5. The adjustable-pitch rapid soldering device for electrical connectors according to claim 1, characterized in that, The top cover (18) has a knob threaded opening (181), and a spring preload knob (110) is threaded into the knob threaded opening (181).

6. The adjustable-pitch rapid soldering device for electrical connectors according to claim 1, characterized in that, The module mechanism (2) includes two rear baffles (21) distributed on both sides of the clamping mechanism (1). The rear baffles (21) are provided with longitudinally distributed profile bodies (25). The upper end of the profile body (25) is equipped with a motor mounting plate (212). The motor mounting plate (212) is equipped with a micro motor (213). The output end of the micro motor (213) is connected to a ball screw pair (28) through a single-module coupling (211). The lower end of the ball screw pair (28) is rotatably engaged with the rear baffles (21) through a deep groove ball bearing (27). The ball screw assembly (28) is threadedly fitted with a slide block (29), and a slide block support block (216) is provided on the slide block (29). A micro rail assembly (217) is provided on the profile body (25), and the slide block support block (216) and the micro rail assembly (217) are slidably fitted.

7. The adjustable-pitch rapid soldering device for electrical connectors according to claim 6, characterized in that, A sensor frame (23) is installed in the lower part of the profile body (25), an LD photoelectric switch (22) is mounted on the sensor frame (23), and a sensor plate (24) is provided on the slide (29).

8. The adjustable-pitch rapid soldering device for electrical connectors according to claim 7, characterized in that, Anti-collision rubber (26) is provided on the end face of the rear baffle (21) opposite to the slide (29).

9. The adjustable-pitch rapid soldering device for electrical connectors according to claim 8, characterized in that, The profile body (25) is equipped with a bearing mounting seat (210), and the ball screw pair (28) is rotatably engaged with the bearing mounting seat (210) through a deep groove ball bearing (215). Anti-collision rubber (214) is provided on the end face of the bearing mounting seat (210) opposite to the slide (29).

10. The adjustable-pitch rapid soldering device for electrical connectors according to claim 1, characterized in that, It also includes a base plate (4), and the module mechanism (2) and the tinning pot (3) are both installed on the upper surface of the base plate (4).

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