Tin adding device of solder paste printing machine

Abstract

The utility model discloses a tin adding device of a solder paste printing machine, which relates to the field of solder paste printing machines and comprises an equipment base, an equipment shell is fixedly mounted on the equipment base, a solder paste tank is fixedly mounted at the top of the equipment shell, and a tin adding mechanism is arranged in the equipment shell. The tin adding mechanism comprises a cylinder body fixed to the top of the equipment shell, a piston is movably installed in the cylinder body, a feeding pipe opening and a discharging pipe opening are fixedly formed in one end of the cylinder body, a tooth mark rod is fixedly installed on the piston, a transmission is arranged on one side of the tooth mark rod, and a driving gear is arranged at the output end of the transmission. The driving gear is meshed with the tooth mark rod, and a driving assembly is arranged below the tin adding mechanism. According to the tin adding device of the tin paste printing machine, tin paste in the cylinder body can be squeezed into the tin paste nozzle after the piston moves forwards, the purpose of tin adding is achieved, the tin adding amount can be accurately controlled by controlling the stroke of the piston, and waste of the tin paste is reduced.

Description

Technical Field

[0001] The utility model relates to the field of solder paste printers, in particular to a tin adding device for a solder paste printer. Background Art

[0002] Modern solder paste printers generally consist of mechanisms such as plate loading, solder paste adding, stamping, and circuit board feeding. The working principle is that the circuit board to be printed is first fixed on the printing positioning table. Then, the left and right scrapers of the printer pass the solder paste through the steel mesh and print it on the corresponding pads. After that, it is fed to the placement machine through the transfer table for automatic placement.

[0003] Publication No. CN219446427U discloses a solder paste adding device for a solder paste printer, comprising a solder paste printer, a fixing frame being provided at the upper end of the solder paste printer, and a feeding cylinder being fixedly connected to the middle portion of the upper end of the fixing frame.

[0004] The above device squeezes out the solder paste in the upper barrel through the feeding screw, and the amount of solder paste squeezed out cannot be accurately controlled, which easily causes waste of solder paste. After the solder paste in the upper barrel is squeezed out, it will accumulate on the steel mesh, making it inconvenient for the scraper to operate. Utility Model Content

[0005] The purpose of the utility model is to provide a tin adding device for a solder paste printer to solve the problems raised in the prior art.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A tin adding device for a solder paste printer, comprising a device base, a device housing fixedly mounted on the device base, a material port opened on the device housing, a solder paste tank fixedly mounted on the top of the device housing, a tin adding mechanism provided in the device housing, the tin adding mechanism comprising a cylinder fixed to the top of the device housing, a piston movably mounted in the cylinder, a feed pipe port and a discharge pipe port fixedly mounted on one end of the cylinder, a tooth mark rod fixedly mounted on the piston, a transmission provided on one side of the tooth mark rod, a drive gear provided on the output end of the transmission, and the drive gear meshing with the tooth mark rod, a drive assembly provided below the tin adding mechanism, the drive assembly comprising a ball screw movably mounted in the device housing, a screw nut provided on the ball screw, a solder paste nozzle fixedly mounted on the screw nut, a hose connected to the solder paste nozzle, one end of the ball screw connected to a drive motor, a first transmission shaft provided on one side of the drive motor, a second transmission shaft provided between the first transmission shaft and the input end of the transmission, and the drive motor can drive the first transmission shaft to rotate.

[0007] Preferably, both the feed pipe and the discharge pipe are provided with a one-way valve. The one-way valve in the feed pipe only allows the solder paste in the solder paste tank to enter the cylinder body, and the one-way valve in the discharge pipe only allows the solder paste in the cylinder body to be discharged through the discharge pipe.

[0008] Preferably, a retaining frame is provided on one side of the cylinder body, and the tooth mark rod and the driving gear are both mounted on one side of the cylinder body by retaining movement, and the driving gear can drive the tooth mark rod to move.

[0009] Preferably, the cylinder body is connected to the solder paste tank through a feed pipe port, and the piston is movably installed in the cylinder body through a tooth mark rod, and the tooth mark rod can drive the piston to move.

[0010] Preferably, helical gears are provided at both ends of the first transmission shaft, both ends of the second transmission shaft, the output end of the drive motor and the input end of the transmission, and the helical gears are meshed with each other, and the first transmission shaft drives the second transmission shaft to rotate.

[0011] Preferably, a bearing is provided on the ball screw, and the ball screw is movably installed in the device housing through the bearing.

[0012] Preferably, one end of the hose is connected to the cylinder body, and the other end of the hose is connected to the solder paste nozzle. The solder paste nozzle is installed on one side of the ball screw through a screw nut. The output end of the drive motor is provided with a coupling. One end of the ball screw is fixed to the output end of the drive motor through a coupling. The screw nut can drive the solder paste nozzle to move.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] In this application, the first transmission shaft can be driven by the driving motor. After the first transmission shaft rotates, it will drive the second transmission shaft to rotate. After the transmission changes speed, the second transmission shaft will drive the driving gear to rotate, causing the tooth mark rod to move forward, thereby pushing the piston forward and squeezing the solder paste in the cylinder into the solder paste nozzle to achieve the purpose of adding solder. By controlling the stroke of the piston, the amount of solder added can be accurately controlled to reduce the waste of solder paste.

[0015] In this application, the ball screw can be driven to rotate by the driving motor. After the ball screw rotates, it will drive the screw nut to move forward. After the screw nut moves forward, it will drive the solder paste nozzle to move forward. When the solder paste nozzle moves forward, the solder paste can be transported to the solder paste nozzle through the hose, so that the solder paste sprayed from the solder paste nozzle falls evenly on the steel mesh, which is convenient for the scraper to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the integrated structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the tin adding mechanism of the present utility model;

[0019] Figure 4 This is a schematic diagram of the drive assembly of the present utility model.

[0020] Numbers in the figure: 1. Equipment base; 2. Material port; 3. Equipment housing; 4. Solder paste can; 5. Tin adding mechanism; 501. Cylinder; 502. Piston; 503. Tooth mark rod; 504. Transmission; 505. Drive gear; 506. Feed pipe port; 507. Discharge pipe port; 508. One-way valve; 6. Drive assembly; 601. Drive motor; 602. First transmission shaft; 603. Second transmission shaft; 604. Bevel gear; 605. Hose; 606. Solder paste nozzle; 607. Screw nut; 608. Ball screw. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figure 1 and Figure 2 As shown, the utility model provides a technical solution for a tin adding device of a solder paste printer, including an equipment base 1, an equipment housing 3 is fixedly installed on the equipment base 1, a material port 2 is opened on the equipment housing 3, a solder paste tank 4 is fixedly installed on the top of the equipment housing 3, a tin adding mechanism 5 is provided in the equipment housing 3, and a driving assembly 6 is provided below the tin adding mechanism 5. After the piston 502 moves forward, the solder paste in the cylinder 501 will be squeezed into the solder paste nozzle 606 to achieve the purpose of tin adding, and the amount of tin added can be accurately controlled by controlling the stroke of the piston 502, thereby reducing the waste of solder paste, and the solder paste sprayed from the solder paste nozzle 606 can be made to fall evenly on the steel mesh, thereby preventing the solder paste from accumulating in one place on the steel mesh.

[0023] like Figure 2 and Figure 3As shown, the tin adding mechanism 5 includes a cylinder body 501 fixed on the top of the equipment housing 3, a piston 502 is movably installed in the cylinder body 501, a feed pipe mouth 506 and a discharge pipe mouth 507 are fixedly installed at one end of the cylinder body 501, a tooth mark rod 503 is fixedly installed on the piston 502, a transmission 504 is provided on one side of the tooth mark rod 503, a driving gear 505 is provided at the output end of the transmission 504, and the driving gear 505 is meshed with the tooth mark rod 503, and a one-way valve 508 is provided in the feed pipe mouth 506 and the discharge pipe mouth 507. The one-way valve 508 in the feed pipe mouth 506 only allows the solder paste in the solder paste tank 4 to enter the cylinder body 501, and the one-way valve 508 in the discharge pipe mouth 507 only allows the solder paste in the cylinder body 501 to be discharged through the discharge pipe mouth 507.

[0024] Specifically, the driving motor 601 can drive the first transmission shaft 602. After the first transmission shaft 602 rotates, it will drive the second transmission shaft 603 to rotate. After the transmission 504 changes speed, the second transmission shaft 603 will drive the driving gear 505 to rotate, causing the tooth mark rod 503 to move forward, thereby pushing the piston 502 forward, squeezing the solder paste in the cylinder 501 into the solder paste nozzle 606, thereby achieving the purpose of adding tin, and the amount of tin added can be accurately controlled by controlling the stroke of the piston 502.

[0025] like Figure 2 and Figure 4 As shown, the drive assembly 6 includes a ball screw 608 movably mounted in the device housing 3, a screw nut 607 is provided on the ball screw 608, a solder paste nozzle 606 is fixedly mounted on the screw nut 607, a hose 605 is connected to the solder paste nozzle 606, one end of the ball screw 608 is connected to the drive motor 601, a first transmission shaft 602 is provided on one side of the drive motor 601, a second transmission shaft 603 is provided between the first transmission shaft 602 and the input end of the transmission 504, and bevel gears 604 are provided at both ends of the first transmission shaft 602, both ends of the second transmission shaft 603, the output end of the drive motor 601 and the input end of the transmission 504, and the bevel gears 604 are meshed together.

[0026] Specifically, the ball screw 608 can be driven to rotate by driving the motor 601. After the ball screw 608 rotates, it will drive the screw nut 607 to move forward. After the screw nut 607 moves forward, it will drive the solder paste nozzle 606 to move forward. When the solder paste nozzle 606 moves forward, the solder paste can be transported to the solder paste nozzle 606 through the hose 605, so that the solder paste sprayed from the solder paste nozzle 606 falls evenly on the steel mesh.

[0027] Working principle: During use, the drive motor 601 can be started. After starting the drive motor 601, it will drive the ball screw 608 and the first transmission shaft 602 to rotate. After the first transmission shaft 602 rotates, it will drive the second transmission shaft 603 to rotate. After the transmission 504 changes speed, the second transmission shaft 603 will drive the drive gear 505 to rotate. After the drive gear 505 rotates, it will drive the tooth mark rod 503 to move forward, thereby pushing the piston 502 forward. After the piston 502 moves forward, it will squeeze the solder paste in the cylinder 501 into the solder paste nozzle 606 to achieve the purpose of adding tin, and by controlling The stroke of the piston 502 can accurately control the amount of tin added, reducing the waste of solder paste. Secondly, after the ball screw 608 rotates, it will drive the screw nut 607 to move forward. After the screw nut 607 moves forward, it will drive the solder paste nozzle 606 to move forward, so that the solder paste sprayed from the solder paste nozzle 606 falls evenly on the steel mesh, preventing the solder paste from accumulating in one place on the steel mesh. After the tin addition is completed, the drive motor 601 can be controlled to reverse. After the drive motor 601 reverses, it will drive the solder paste nozzle 606 and the piston 502 to reset. During the resetting process of the piston 502, the solder paste in the solder paste tank 4 will be sucked into the cylinder body 501.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A tinning device for a solder paste printer, comprising a device base (1), a device housing (3) fixedly mounted on the device base (1), a material port (2) provided on the device housing (3), and a solder paste tank (4) fixedly mounted on the top of the device housing (3), characterized in that: A tinning mechanism (5) is provided in the device housing (3), and the tinning mechanism (5) includes a cylinder (501) fixed to the top of the device housing (3), a piston (502) is movably installed in the cylinder (501), a feed pipe opening (506) and a discharge pipe opening (507) are fixedly installed at one end of the cylinder (501), a tooth mark rod (503) is fixedly installed on the piston (502), a transmission (504) is provided on one side of the tooth mark rod (503), a drive gear (505) is provided at the output end of the transmission (504), and the drive gear (505) is meshed with the tooth mark rod (503), and the tinning mechanism (5) is provided with a driving assembly (6) below, the driving assembly (6) including a ball screw (608) movably mounted in the device housing (3), a screw nut (607) being provided on the ball screw (608), a solder paste nozzle (606) being fixedly mounted on the screw nut (607), a hose (605) being connected to the solder paste nozzle (606), one end of the ball screw (608) being connected to a driving motor (601), a first transmission shaft (602) being provided on one side of the driving motor (601), and a second transmission shaft (603) being provided between the first transmission shaft (602) and the input end of the transmission (504).

2. The tinning device of a solder paste printer according to claim 1, characterized in that: Both the feed pipe opening (506) and the discharge pipe opening (507) are provided with a one-way valve (508). The one-way valve (508) in the feed pipe opening (506) only allows the solder paste in the solder paste tank (4) to enter the cylinder body (501), and the one-way valve (508) in the discharge pipe opening (507) only allows the solder paste in the cylinder body (501) to be discharged through the discharge pipe opening (507).

3. The tinning device of a solder paste printer according to claim 2, characterized in that: A retaining frame is provided on one side of the cylinder body (501), and the tooth mark rod (503) and the driving gear (505) are both mounted on the one side of the cylinder body (501) by retaining the movable frame.

4. The tinning device of a solder paste printer according to claim 3, characterized in that: The cylinder body (501) is connected to the solder paste tank (4) through the feed pipe opening (506), and the piston (502) is movably installed in the cylinder body (501) through the tooth mark rod (503).

5. The tinning device of a solder paste printer according to claim 4, characterized in that: Helical gears (604) are provided at both ends of the first transmission shaft (602), both ends of the second transmission shaft (603), the output end of the drive motor (601), and the input end of the transmission (504), and the helical gears (604) are meshed with each other.

6. The tinning device of a solder paste printer according to claim 5, characterized in that: A bearing is provided on the ball screw (608), and the ball screw (608) is movably mounted in the device housing (3) via the bearing.

7. The tinning device of a solder paste printer according to claim 6, characterized in that: One end of the hose (605) is connected to the cylinder (501), and the other end of the hose (605) is connected to the solder paste nozzle (606). The solder paste nozzle (606) is installed on one side of the ball screw (608) through a screw nut (607). The output end of the drive motor (601) is provided with a coupling, and one end of the ball screw (608) is fixed to the output end of the drive motor (601) through the coupling.

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