Automatic tin feeding device for circuit board welding

Abstract

The utility model discloses a kind of automatic tin sending devices for circuit board welding, the utility model relates to soldering device related technical field.It is provided with installation mechanism for automatic tin sending of circuit board welding on the installation base, installation mechanism includes, the utility model is moved by adjusting block and drives motor main body, gear lever and driving wheel movement, to change the interval between driving wheel and driven wheel, different specifications, different diameter tin wire can be adapted, the applicability of tin sending is ensured, and when driving wheel or driven wheel is worn and skids due to long time work, the fixing bolt of installation cover on the outer shell of wire feeding is unscrewed, installation cover is removed, the bolt of driving wheel and gear lever connection is unscrewed again, wear and tear components can be removed and replaced, avoid the normal work of entire tin sending device due to component wear and tear, prolong the service life of device, only need to replace worn driving wheel and driven wheel, reduce maintenance cost and maintenance difficulty.

Description

TECHNICAL FIELD

[0001] The utility model relates to the soldering device related technical field, specifically is a kind of automatic tin feeding device for circuit board welding. BACKGROUND

[0002] With the rapid development of electronic industry, as the key component of electronic equipment, the soldering link in the production and manufacturing process of circuit board is crucial. As one of the core components in the circuit board soldering equipment, the performance of the automatic tin feeding device directly affects the soldering quality and production efficiency.

[0003] The reference patent (publication number: CN223382722U; publication date: 2025-09-26) discloses an automatic tin feeding soldering device, which comprises a soldering table body, a drive cylinder is arranged at one end of the soldering table body, a portable replacement mechanism is arranged at one end of the drive cylinder, and a soldering mechanism is arranged at the bottom of the drive cylinder. The portable replacement mechanism comprises a mounting block, a tin wire reel, a first spring, a second spring, an upper movable block, a lower movable block, an upper lever, a lower lever and a shaft column. Through the action of the first spring and the second spring, the upper movable block and the lower movable block can form a clamping force on the tin wire reel, making the replacement of the tin wire reel more convenient. The operator only needs to pull the upper lever and the lower lever, and the tin wire reel can be easily replaced, greatly saving the replacement time and improving the work efficiency. Moreover, the mechanism can be applied to different specifications of tin wire reels, and has strong universality.

[0004] Based on the above-mentioned patent, in the current circuit board welding production, due to different circuit boards and welding process requirements, various specifications and different diameters of tin wires need to be used. However, most of the existing automatic tin feeding devices lack effective adjustment mechanism in design, and the distance between the driving wheel and the driven wheel is usually fixed, which cannot provide appropriate clamping force and conveying power when facing different diameters of tin wires. Moreover, the sending tin wheel, as the core component directly contacting and driving the tin wire, will inevitably be worn out after long-term work. The friction between the worn sending tin wheel and the tin wire decreases, causing the tin feeding to slip. Then, the existing automatic tin feeding device is integrated as a whole in structure design, and the motor and the sending tin wheel cannot be replaced. At the same time, during the working process of the automatic tin feeding device, it is sometimes necessary to temporarily stop feeding. However, the existing device lacks effective tin wire fixing mechanism when stopping feeding. After stopping feeding, the tin wire may sag due to its own gravity. Therefore, the utility model provides an automatic tin feeding device for circuit board welding. UTILITY MODEL CONTENTS

[0005] To address the shortcomings of existing technologies, this utility model provides an automatic solder feeding device for circuit board soldering. It solves the problems of most existing automatic solder feeding devices lacking an effective adjustment mechanism in their design, with the distance between the drive wheel and driven wheel typically being fixed. This results in an inability to provide suitable clamping force and conveying power when dealing with solder wires of different diameters. Furthermore, as the core component that directly contacts and drives the solder wire, the solder feeding wheel inevitably wears down after long-term operation. The reduced friction between the worn solder feeding wheel and the solder wire leads to slippage during solder feeding. Additionally, existing automatic solder feeding devices integrate the motor and solder feeding wheel into a single unit, making replacement impossible.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic solder feeding device for circuit board soldering, comprising a mounting base, wherein the mounting base is provided with a mounting mechanism for automatic solder feeding for circuit board soldering, the mounting mechanism comprising:

[0007] The adjustment assembly includes a wire feeding housing fixed to the upper surface of the mounting base. The mounting base has a sliding groove inside, and an adjustment block connected by a threaded assembly is provided inside the sliding groove. One end of the adjustment block is fixed to a motor body, and the output end of the motor body is connected to a gear rod. A drive wheel is vertically slidably connected to the outside of the gear rod.

[0008] The locking assembly includes a fixing block fixed to the inner wall of the wire feeding housing. The upper and lower ends of the fixing block are provided with movable rods rotatably connected by a rotating shaft, and one end of the movable rod is fixed with a clamping rod.

[0009] Preferably, the threaded assembly includes a screw threaded to one end of a slide groove, guide grooves are provided on both sides of the inner wall of the slide groove, and a guide block is slidably connected inside the guide groove. The adjusting block is fixedly connected to one end of the guide block, and one end of the screw is rotatably connected to the adjusting block.

[0010] Preferably, the drive wheel has a gear groove inside that is vertically engaged and slides with the gear rod, the upper end of the drive wheel is provided with a bolt connected to the gear rod, the other end of the groove is provided with a driven wheel on one side of the drive wheel, and the upper end of the wire feeding housing is provided with a mounting cover that is detachably connected by bolts.

[0011] Preferably, a support frame is fixed to the upper surface of the mounting base, a tin wire roll is provided inside the support frame, a protective shell is provided on the outer side of the support frame, and bolts are provided at both ends of the protective shell to connect with the mounting base.

[0012] Preferably, a fixing rod is fixed to the inner wall of the wire feeding housing, and a guide housing is fixed to one end of the fixing rod.

[0013] Preferably, the fixed block is provided with an electric push rod inside, the telescopic end of the electric push rod is fixed with a connecting block, the upper and lower ends of the connecting block are provided with connecting rods rotatably connected by a rotating shaft, and the other end of the connecting rod is provided with a rotating shaft and rotatably connected to the movable rod.

[0014] Beneficial effects

[0015] This invention provides an automatic solder feeding device for circuit board soldering. Compared with the prior art, it has the following advantages:

[0016] Firstly, this utility model moves the motor body, gear rod, and drive wheel by adjusting the block, thereby changing the distance between the drive wheel and the driven wheel. This allows it to adapt to solder wires of different specifications and diameters, ensuring the applicability of solder feeding. Furthermore, when the drive wheel or driven wheel wears and slips due to prolonged operation, the fixing bolts of the mounting cover on the upper end of the wire feeding housing can be unscrewed, the mounting cover removed, and the bolts connecting the drive wheel and the gear rod unscrewed to remove the worn parts for replacement. This avoids affecting the normal operation of the entire solder feeding device due to component wear, extending the service life of the device. Only the worn drive wheel and driven wheel need to be replaced, reducing maintenance costs and difficulty.

[0017] Secondly, when it is necessary to stop wire feeding and fix the solder wire, the electric push rod is activated. The telescopic end of the electric push rod retracts, causing the connecting block to move. The movement of the connecting block causes the connecting rod to rotate around the rotating shaft. The rotation of the connecting rod causes the movable rod to rotate around the rotating shaft on the fixed block, thereby bringing the two sets of clamping rods closer together and clamping the solder wire, thus fixing the solder wire. When the wire feeding is stopped, the two sets of clamping rods can fix the solder wire, effectively preventing the solder wire from loosening or falling off due to its own weight or external factors, ensuring that the next wire feeding can proceed smoothly, and improving the working reliability of the solder feeding device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the drive wheel connection structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the wire feeding shell of this utility model;

[0021] Figure 4 This is a schematic diagram of the clamping rod connection structure of this utility model.

[0022] In the diagram: 1. Mounting base; 2. Wire feeding housing; 3. Slide groove; 301. Guide block; 302. Adjusting block; 303. Screw; 304. Motor body; 305. Gear rod; 306. Drive wheel; 307. Gear groove; 308. Driven wheel; 4. Support frame; 401. Solder wire spool; 402. Protective housing; 5. Mounting cover; 6. Fixing rod; 601. Guide housing; 7. Fixing block; 701. Movable rod; 702. Clamping rod; 703. Electric push rod; 704. Connecting block; 705. Connecting rod. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-4 This utility model provides a technical solution: an automatic solder feeding device for circuit board soldering, including a mounting base 1, on which a mounting mechanism for automatic solder feeding for circuit board soldering is provided, the mounting mechanism including:

[0025] The adjustment assembly includes a wire feeding housing 2 fixed to the upper surface of the mounting base 1. The mounting base 1 has a sliding groove 3 inside. An adjustment block 302 connected by a threaded assembly is provided inside the sliding groove 3. A motor body 304 is fixed to one end of the adjustment block 302. A gear rod 305 is connected to the output end of the motor body 304. A drive wheel 306 is vertically slidably connected to the outside of the gear rod 305.

[0026] The locking assembly includes a fixing block 7 fixed to the inner wall of the wire feeding housing 2. The upper and lower ends of the fixing block 7 are provided with movable rods 701 rotatably connected by a rotating shaft. One end of the movable rod 701 is fixed with a clamping rod 702.

[0027] In a preferred embodiment, the threaded assembly includes a screw 303 threadedly connected to one end of a slide groove 3. Guide grooves are provided on both sides of the inner wall of the slide groove 3, and a guide block 301 is slidably connected inside the guide groove. An adjusting block 302 is fixedly connected to one end of the guide block 301. One end of the screw 303 is rotatably connected to the adjusting block 302, which is used to adjust the distance between the drive wheel 306 and the driven wheel 308.

[0028] Specifically, when it is necessary to adapt to solder wires of different diameters, the screw 303 in the threaded assembly is rotated. Since the screw 303 is threadedly connected to the inner wall of the slide groove 3 and rotatably connected to the adjusting block 302, the rotational motion of the screw 303 is converted into the linear motion of the adjusting block 302. The adjusting block 302 slides along the guide groove of the inner wall of the slide groove 3 through the guide block 301, thereby driving the motor body 304, gear rod 305 and drive wheel 306 fixed on the adjusting block 302 to move synchronously, so as to achieve precise adjustment of the distance between the drive wheel 306 and the driven wheel 308 until it is adapted to the current solder wire diameter.

[0029] The motor body 304 is started, and the output end of the motor drives the gear rod 305 to rotate. The gear rod 305 drives the drive wheel 306 to rotate synchronously through the gear groove 307. The drive wheel 306 and the driven wheel 308 cooperate to clamp the solder wire, and the solder wire is transported in the soldering direction by friction.

[0030] In a preferred embodiment, the drive wheel 306 has a gear groove 307 inside that is vertically engaged and slides with the gear rod 305. The upper end of the drive wheel 306 is bolted to the gear rod 305. The other end of the groove 3 is located on one side of the drive wheel 306 and a driven wheel 308 is provided. The upper end of the wire feeding housing 2 is provided with a mounting cover 5 that is detachably connected by bolts. Since the drive wheel 306 and the driven wheel 308 wear and slip during long-term operation, the drive wheel 306 and the driven wheel 308 are designed to be replaceable for long-term operation.

[0031] Furthermore, when the drive wheel 306 or driven wheel 308 wears and slips due to long-term operation, unscrew the fixing bolts of the mounting cover 5 at the upper end of the wire feeding housing 2, remove the mounting cover 5, and then unscrew the bolts connecting the drive wheel 306 and the gear rod 305. The worn parts can then be removed and replaced. After replacement, reinstall them in reverse order.

[0032] In a preferred embodiment, a support frame 4 is fixed to the upper surface of the mounting base 1. A solder wire spool 401 is provided inside the support frame 4, and a protective shell 402 is provided on the outer side of the support frame 4. Bolts are provided at both ends of the protective shell 402 to connect it to the mounting base 1. The operator first unscrews the bolts connecting the two ends of the protective shell 402 to the mounting base 1, removes the protective shell 402, and installs the solder wire spool 401 with solder wire wound on the inner rotating shaft of the support frame 4, ensuring that the solder wire spool 401 can rotate freely. The free end of the solder wire is passed through the reserved opening of the protective shell 402, and then the protective shell 402 is covered and the bolts are tightened to fix the protective shell 402. When feeding solder, the solder wire spool 401 rotates synchronously with the solder feeding speed, continuously releasing solder wire into the wire feeding shell 2.

[0033] In a preferred embodiment, a fixing rod 6 is fixed to the inner wall of the wire feeding housing 2. A guide housing 601 is fixed to one end of the fixing rod 6. An electric push rod 703 is installed inside the fixing block 7. A connecting block 704 is fixed to the telescopic end of the electric push rod 703. Connecting rods 705 are rotatably connected to the upper and lower ends of the connecting block 704 via rotating shafts. The other end of the connecting rod 705 is rotatably connected to the movable rod 701 via a rotating shaft. This is used to fix the solder wire with two sets of clamping rods 702 when the wire feeding operation is stopped. When it is necessary to stop the wire feeding operation... When fixing the solder wire, the electric push rod 703 is activated. The retracting end of the electric push rod 703 moves the connecting block 704. The movement of the connecting block 704 causes the connecting rod 705 to rotate around the rotating shaft. The rotation of the connecting rod 705 causes the movable rod 701 to rotate around the rotating shaft on the fixed block 7, thereby bringing the two sets of clamping rods 702 closer together and clamping the solder wire to fix it. When it is necessary to continue feeding the wire, the retracting end of the electric push rod 703 is extended. Through the above reverse movement process, the two sets of clamping rods 702 are moved away from each other, releasing the solder wire.

[0034] The aforementioned electric linear actuator is model XTL-100, and the motor body is model 42BYG250-150. It is integrated into the control device and belongs to existing technology, so it will not be elaborated on further.

[0035] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0036] During operation, the operator first unscrews the bolts connecting the two ends of the protective shell 402 to the mounting base 1, removes the protective shell 402, installs the solder wire drum 401 with solder wire wound on the inner rotating shaft of the support frame 4, ensuring that the solder wire drum 401 can rotate freely, then passes the free end of the solder wire through the reserved opening of the protective shell 402 and through the guide shell 601 at one end of the fixing rod 6 inside the wire feeding shell 2, and then covers the protective shell 402 and tightens the bolts to fix it.

[0037] When it is necessary to adapt to solder wires of different diameters, rotate the screw 303 at one end of the slide 3. Since the screw 303 is threadedly connected to the inner wall of the slide 3 and rotatably connected to the adjusting block 302, the rotational motion of the screw 303 is converted into the linear motion of the adjusting block 302. The adjusting block 302 slides along the guide groove of the inner wall of the slide 3 through the guide block 301, thereby driving the motor body 304, gear rod 305 and drive wheel 306 fixed on the adjusting block 302 to move synchronously, so that the drive wheel 306 and the driven wheel at the other end of the slide 3 can move synchronously. The spacing between 308 is precisely adjusted until it matches the current solder wire diameter. Then, the motor body 304 is started, and the motor output drives the gear rod 305 to rotate. The gear rod 305 drives the drive wheel 306 to rotate synchronously through the gear groove 307 inside the drive wheel 306. The drive wheel 306 and the driven wheel 308 cooperate to clamp the solder wire. The solder wire is driven to be conveyed in the soldering direction by friction. At this time, the telescopic end of the electric push rod 703 inside the fixed block 7 is in the extended state, and the two sets of clamping rods 702 are far apart from each other, which does not affect the solder wire conveying.

[0038] When it is necessary to stop wire feeding and fix the solder wire, the telescopic end of the electric push rod 703 is retracted, which drives the connecting block 704 to move. The movement of the connecting block 704 causes the connecting rod 705 to rotate around the rotating shaft. The rotation of the connecting rod 705 drives the movable rod 701 to rotate around the rotating shaft on the fixed block 7, thereby bringing the two sets of clamping rods 702 closer together to clamp the solder wire and fix it. When it is necessary to continue wire feeding, the telescopic end of the electric push rod 703 is extended. Through the above reverse movement process, the two sets of clamping rods 702 are moved away from each other, releasing the solder wire. When the drive wheel 306 or driven wheel 308 wears and slips due to long-term operation, the fixing bolts of the mounting cover 5 at the upper end of the wire feeding housing 2 are unscrewed, the mounting cover 5 is removed, and then the bolts connecting the drive wheel 306 and the gear rod 305 are unscrewed. The worn parts can then be removed and replaced. After replacement, the parts can be reassembled in reverse order to restore use.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] 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. An automatic solder feeding device for circuit board soldering, comprising a mounting base (1), characterized in that: The mounting base (1) is provided with an automatic solder feeding mechanism for circuit board soldering. The mounting mechanism includes: The adjustment assembly includes a wire feeding shell (2) fixed to the upper surface of the mounting base (1). The mounting base (1) has a sliding groove (3) inside. An adjustment block (302) connected by a threaded assembly is provided inside the sliding groove (3). A motor body (304) is fixed to one end of the adjustment block (302). A gear rod (305) is connected to the output end of the motor body (304). A drive wheel (306) is vertically slidably connected to the outside of the gear rod (305). The locking assembly includes a fixing block (7) fixed to the inner wall of the wire feeding housing (2). The upper and lower ends of the fixing block (7) are provided with movable rods (701) rotatably connected by a rotating shaft. One end of the movable rod (701) is fixed with a clamping rod (702).

2. The automatic solder feeding device for circuit board soldering according to claim 1, characterized in that: The threaded assembly includes a screw (303) threaded to one end of a slide groove (3). Guide grooves are provided on both sides of the inner wall of the slide groove (3), and a guide block (301) is slidably connected inside the guide groove. An adjusting block (302) is fixedly connected to one end of the guide block (301), and one end of the screw (303) is rotatably connected to the adjusting block (302).

3. The automatic solder feeding device for circuit board soldering according to claim 1, characterized in that: The drive wheel (306) has a gear groove (307) that is vertically engaged and slides with the gear rod (305). The upper end of the drive wheel (306) is provided with a bolt connected to the gear rod (305). The other end of the groove (3) is provided with a driven wheel (308) on one side of the drive wheel (306). The upper end of the wire feeding housing (2) is provided with a mounting cover (5) that is detachably connected by bolts.

4. The automatic solder feeding device for circuit board soldering according to claim 1, characterized in that: The mounting base (1) has a support frame (4) fixed on its upper surface. The support frame (4) has a tin wire roll (401) inside and a protective shell (402) on its outer side. The protective shell (402) has bolts at both ends that are connected to the mounting base (1).

5. The automatic solder feeding device for circuit board soldering according to claim 1, characterized in that: A fixing rod (6) is fixed to the inner wall of the wire feeding housing (2), and a guide housing (601) is fixed to one end of the fixing rod (6).

6. The automatic solder feeding device for circuit board soldering according to claim 1, characterized in that: An electric push rod (703) is provided inside the fixed block (7). A connecting block (704) is fixed to the telescopic end of the electric push rod (703). A connecting rod (705) is provided at the upper and lower ends of the connecting block (704) and is rotatably connected to the connecting rod (705) via a rotating shaft. The other end of the connecting rod (705) is provided with a rotating shaft and is rotatably connected to the movable rod (701).

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