Smearing device with auxiliary structure

Abstract

The utility model relates to the technical field of soldering flux smearing devices, and discloses a smearing device with an auxiliary structure, which comprises a needle cylinder, a needle tube is arranged at the bottom end of the needle cylinder, and an auxiliary component is arranged below the needle cylinder. According to the smearing device with the auxiliary structure, through cooperation of the fixed plate, the fixed rod, the screw rod and the movable plate, the outer side of a needle tube can be scraped and cleaned, the needle tube is corrected, the situation that outflow smearing of scaling powder is affected by bending of the needle tube is avoided, meanwhile, the scaling powder on the outer side of the needle tube can be scraped to the plane of the bottom of the movable plate, and the smearing efficiency is improved. And through cooperation of a partition plate, a telescopic rod, a connecting plate, a torsional spring, a limiting rod and a limiting hole, sealing treatment can be conducted on the bottom end of a needle tube when the smearing device is not used, and the situation that the scaling powder in a needle cylinder leaks from the bottom end of the needle tube due to high flowability, and consequently the environment is polluted is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of soldering flux coating devices, in particular to a coating device with an auxiliary structure. Background Art

[0002] Flux is usually a mixture with rosin as the main ingredient. It is an auxiliary material to ensure the smooth progress of the welding process. It can help and promote the welding process during the welding process. It is also a chemical substance with a protective effect and prevents oxidation reactions. Its main function is to remove oxides on the surface of the solder and the base material to be welded, and it is applied to the welding position through a coating device.

[0003] Existing PCB board welding mostly uses a needle-shaped coating device, which includes a syringe, a push rod and a syringe. The flux (such as flux oil or highly fluid flux paste) is located inside the syringe and is injected from the syringe to the welding position for coating by the push rod, which facilitates the coating of the flux to the welding position and improves the coating efficiency.

[0004] However, in actual use of the above-mentioned device, due to the strong fluidity of the flux and the fact that the end of the needle tube is often in an open state, the flux is likely to leak from the needle tube, which not only leads to a waste of flux, but also pollutes the working environment. At the same time, the needle tube is exposed to the outside and is prone to bending under pressure, which in turn affects the outflow and application of the flux. In view of this, we propose a coating device with an auxiliary structure. Utility Model Content

[0005] The purpose of the utility model is to provide a coating device with an auxiliary structure to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a coating device with an auxiliary structure, comprising a syringe, a push rod is arranged at the upper end of the syringe, a needle tube is arranged at the bottom end of the syringe, and an auxiliary component is arranged below the syringe, and the auxiliary component includes:

[0007] A fixed plate, the fixed plate is fixedly mounted on the outside of the syringe, a fixed rod is fixedly mounted on the bottom end of the fixed plate, a screw is arranged below the fixed plate, the outer side of the screw is threadedly connected with a movable plate, and when the screw rotates, the movable plate can be driven to move synchronously;

[0008] A partition, the partition is arranged on the bottom surface of the movable plate, a telescopic rod is fixedly installed on the upper surface of the partition, the top end of the telescopic rod passes through the movable plate and a connecting plate is fixedly installed, a torsion spring is sleeved on the outer side of the telescopic rod, a limit rod is fixedly installed on the right end of the bottom surface of the connecting plate, and when the limit rod moves, the telescopic rod can be driven to move synchronously through the connecting plate;

[0009] The limiting hole is opened on the upper surface of the movable plate.

[0010] Preferably, the bottom end of the fixing rod passes through the movable plate, and the fixing rod can guide and limit the movement of the movable plate, and cooperate with the screw rod so that the movable plate can only perform linear movement in the up and down directions.

[0011] Preferably, the top end of the screw rod passes through the bottom surface of the fixing plate and a handle is fixedly mounted thereon, and no thread is arranged on the outside of the connection between the screw rod and the fixing plate, so that the screw rod can be rotated synchronously when the handle is rotated.

[0012] Preferably, the bottom end of the torsion spring is fixedly connected to the upper surface of the movable plate, and the top end of the torsion spring is fixedly connected to the bottom surface of the connecting plate. When the connecting plate rotates, the torsion spring can be driven to rotate synchronously, thereby causing the torsion spring to generate torque.

[0013] Preferably, the size of the limiting rod and the size of the limiting hole are matched to each other, and the bottom end of the limiting rod can enter the interior of the limiting hole.

[0014] Preferably, a support plate is fixedly mounted on the bottom end of the limiting rod, and an annular groove is formed at the bottom end of the support plate.

[0015] Compared with the prior art, the utility model provides a coating device with an auxiliary structure, which has the following beneficial effects:

[0016] 1. The coating device with an auxiliary structure can scrape and clean the outside of the needle tube and correct the needle tube through the cooperation of the set fixed plate, fixed rod, screw and movable plate to prevent the bending of the needle tube from affecting the outflow and coating of the flux. At the same time, the flux on the outside of the needle tube can be scraped to the plane on the bottom of the movable plate, which is convenient for the user to clean the excess outflowing flux. Through the cooperation of the set partition, telescopic rod, connecting plate, torsion spring, limit rod and limit hole, the bottom end of the needle tube can be sealed when the coating device is not in use to prevent the flux inside the syringe from leaking from the bottom end of the needle tube due to its strong fluidity, causing environmental pollution.

[0017] 2. The coating device with an auxiliary structure can limit the movement of the movable plate by means of a support plate, so that the movable plate can be accurately moved to a position where the bottom surface and the bottom end of the needle tube are located in the same horizontal plane, and the friction between the support plate and the welding position can be reduced by means of an annular groove to avoid affecting the movement of the coating device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2It is a structural schematic diagram of the bottom of the utility model;

[0020] Figure 3 It is a schematic diagram of the movable plate, screw rod and connecting plate of the utility model structure.

[0021] In the figure: 1, syringe; 2, push rod; 3, needle tube; 401, fixed plate; 402, fixed rod; 403, screw; 404, movable plate; 405, partition; 406, telescopic rod; 407, connecting plate; 408, torsion spring; 409, limit rod; 410, limit hole; 501, support plate; 502, annular groove. DETAILED DESCRIPTION

[0022] like Figure 1-Figure 3 As shown, the utility model provides a technical solution: a coating device with an auxiliary structure, including a syringe 1, a push rod 2 is arranged at the upper end of the syringe 1, a needle tube 3 is arranged at the bottom end of the syringe 1, and flux is stored inside the syringe 1. When the push rod 2 moves downward, the flux can be injected through the needle tube 3 and coated on the desired position. An auxiliary component is arranged below the syringe 1.

[0023] The auxiliary components include: a fixed plate 401, a partition plate 405 and a limiting hole 410. The fixed plate 401 is fixedly installed on the outside of the syringe 1. The bottom end of the fixed plate 401 is fixedly installed with a fixed rod 402. A screw 403 is arranged below the fixed plate 401. The top of the screw 403 passes through the bottom surface of the fixed plate 401 and is fixedly installed with a handle. The outer side of the screw 403 is threadedly connected with a movable plate 404. The bottom end of the fixed rod 402 passes through the movable plate 404. The movable plate 404 is provided with a through hole adapted to the needle tube 3, and the movable plate 404 is sleeved on the outside of the needle tube 3. The user can The screw rod 403 is rotated by the handle, and then the movable plate 404 is driven to perform linear movement in the up and down directions under the limit of the fixed rod 402. At this time, the movable plate 404 can correct the needle tube 3 to keep the needle tube 3 vertical, and prevent the needle tube 3 from bending and affecting the injection and application of the flux. At the same time, the flux attached to the outside of the needle tube 3 can be scraped off when the movable plate 404 moves downward. Then, when the movable plate 404 moves to the bottom and is on the same horizontal plane as the bottom end of the needle tube 3, the user can directly wipe the bottom plane of the movable plate 404 to complete the cleaning, which is easy to operate.

[0024] The partition 405 is arranged on the bottom surface of the movable plate 404, and the upper surface of the partition 405 is in contact with the bottom surface of the movable plate 404. In the initial state, when the bottom surface of the movable plate 404 and the bottom end of the needle tube 3 are located at the same horizontal plane, the partition 405 will seal the bottom of the needle tube 3 to prevent the flux from leaking due to its strong fluidity. A telescopic rod 406 is fixedly installed on the upper surface of the partition 405. The upper and lower ends of the telescopic rod 406 are both rectangular in structure. When the upper end of the telescopic rod 406 rotates, the lower end can be driven to rotate synchronously. The top end of the telescopic rod 406 passes through the movable plate 404 and is fixedly installed with a connecting plate 407. A torsion spring 408 is sleeved on the outer side of the telescopic rod 406. The bottom end of the torsion spring 408 is fixedly connected to the upper surface of the movable plate 404. The top end of the torsion spring 408 is fixedly connected to the bottom surface of the connecting plate 407. The torsion spring 408 can be slightly stretched and will automatically reset after the force is released. A limiting rod 409 is fixedly installed on the right end of the bottom surface of the connecting plate 407. The size of the limiting rod 409 is matched with the size of the limiting hole 410. The limiting hole 410 is opened on the upper surface of the movable plate 404.

[0025] In the initial state, the torsion spring 408 is in a rotating state with torque, and the limiting rod 409 is located inside the limiting hole 410, which can limit the torsion spring 408, the connecting plate 407, the telescopic rod 406 and the partition 405. When the user pulls the connecting plate 407 upward to drive the limiting rod 409 to move upward and leave the limiting hole 410, the connecting plate 407 and the telescopic rod 406 will rotate and reset under the action of the torque of the torsion spring 408, so that the telescopic rod 406 and the partition 405 rotate 180°, thereby releasing the seal on the bottom end of the needle tube 3, so that the flux can be injected and applied.

[0026] A support plate 501 is fixedly installed at the bottom end of the limiting rod 409, and an annular groove 502 is opened at the bottom end of the supporting plate 501. The supporting plate 501 can limit the maximum moving distance of the movable plate 404. When the movable plate 404 moves to fit with the upper surface of the supporting plate 501, the bottom surface of the movable plate 404 and the bottom end of the needle tube 3 are in the same horizontal plane. At the same time, the supporting plate 501 can make the bottom end of the needle tube 3 keep a certain distance from the required coating position to avoid the bottom end of the needle tube 3 fitting with the coating position, resulting in the inability of the flux to flow out. The annular groove 502 can reduce the friction between the supporting plate 501 and the coating position to avoid hindering the fitting movement of the coating device.

[0027] In the utility model, when in use, when the coating device is not in use, the screw rod 403 can be rotated by rotating the handle, and then the movable plate 404 can be moved downward under the limit of the fixed rod 402, so as to scrape off the soldering flux attached to the outside of the needle tube 3 and correct the needle tube 3 at the same time. When the movable plate 404 moves to fit the upper surface of the support plate 501, it stops moving. At this time, the bottom surface of the movable plate 404 and the bottom end of the needle tube 3 are located in the same horizontal plane. The cleaning can be completed by wiping the bottom plane of the movable plate 404, and then the connecting plate 407 is rotated to drive the limiting rod 409 to move to the top of the limiting hole 410. At this time, the limiting rod 409 will enter the inside of the limiting hole 410 under the action of the slight elastic potential energy of the torsion spring 408. The telescopic rod 406 and the partition 405 are limited so that the partition 405 remains in a state of sealing the bottom end of the needle tube 3 to prevent leakage of the flux inside the syringe 1 due to its strong fluidity. When the flux needs to be applied to the required position, the connecting plate 407 is pulled upward to drive the limiting rod 409 to move upward and away from the inside of the limiting hole 410. The connecting plate 407 and the telescopic rod 406 will rotate and reset under the torque of the torsion spring 408, so that the telescopic rod 406 and the partition 405 rotate 180°, releasing the seal on the bottom end of the needle tube 3, so that the flux can be injected and applied. At the same time, the movable plate 404 can be driven to move upward by rotating the handle to avoid affecting the user's observation of the application situation at the welding position.

[0028] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A coating device with an auxiliary structure, comprising a syringe (1), a push rod (2) being arranged at the upper end of the syringe (1), and a needle tube (3) being arranged at the lower end of the syringe (1), characterized in that: An auxiliary component is arranged below the syringe (1), and the auxiliary component comprises: A fixed plate (401), the fixed plate (401) is fixedly mounted on the outside of the syringe (1), a fixed rod (402) is fixedly mounted on the bottom end of the fixed plate (401), a screw rod (403) is arranged below the fixed plate (401), and a movable plate (404) is threadedly connected to the outside of the screw rod (403); A partition (405), wherein the partition (405) is arranged on the bottom surface of the movable plate (404), a telescopic rod (406) is fixedly installed on the upper surface of the partition (405), the top end of the telescopic rod (406) passes through the movable plate (404) and is fixedly installed with a connecting plate (407), a torsion spring (408) is sleeved on the outer side of the telescopic rod (406), and a limiting rod (409) is fixedly installed on the right end of the bottom surface of the connecting plate (407); A limiting hole (410), wherein the limiting hole (410) is opened on the upper surface of the movable plate (404).

2. The coating device with auxiliary structure according to claim 1, characterized in that: The bottom end of the fixed rod (402) passes through the movable plate (404).

3. The coating device with auxiliary structure according to claim 1, characterized in that: The top end of the screw rod (403) passes through the bottom surface of the fixing plate (401) and is fixedly mounted with a handle.

4. The coating device with auxiliary structure according to claim 1, characterized in that: The bottom end of the torsion spring (408) is fixedly connected to the upper surface of the movable plate (404), and the top end of the torsion spring (408) is fixedly connected to the bottom surface of the connecting plate (407).

5. The coating device with auxiliary structure according to claim 1, characterized in that: The size of the limiting rod (409) and the size of the limiting hole (410) are adapted to each other.

6. The coating device with auxiliary structure according to claim 1, characterized in that: A support plate (501) is fixedly mounted on the bottom end of the limiting rod (409), and an annular groove (502) is formed on the bottom end of the support plate (501).

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