Improved automatic tin dipping machine

Abstract

The utility model provides an improved automatic tin dipping machine, and its technical main points lie in: including clamping device, portal frame, single end lifting device and elevating drive arrangement, wherein, the portal frame includes movable vertical plate, single end lifting device is used for making the portal frame one end to lift upwards, including installation horizontal plate, with the fixed vertical plate who is fixed with installation horizontal plate and is parallel to movable vertical plate setting, movable vertical plate one end rotates and is installed on the fixed vertical plate through the pivot, installation horizontal plate is equipped with a first elevating drive assembly, and the movable end of first elevating drive assembly is rotatably connected with movable vertical plate, to drive movable vertical plate rotates around pivot. Lifting action is lifted by single end lifting device to the portal frame and clamping device whole, and the lifting height is higher, so that the tin liquid drops completely, can avoid the tin badness of being connected, and the clamping device only needs to complete the rotating action, and does not need to carry out independent lifting action, therefore the structure integrity, stability is enhanced, and the lifting process will not appear the jam.

Description

Technical Field

[0001] This utility model relates to the field of tinning equipment technology, specifically to an automatic tinning machine for tinning the pins of products such as network transformers. Background Technology

[0002] Products such as network transformers and magnetic ring inductors have single or double rows of pins, and the pins are relatively dense. Their appearance is similar to that of ICs (integrated circuits). After the production of these products is completed, the pins usually need to be dipped in tin to ensure that they can better adapt to the subsequent soldering process.

[0003] Chinese utility model patent No. 201921748986.5 discloses an automatic tinning machine for network transformers, used to batch pick up and tin network transformers. Its material holding mechanism includes a horizontally shaped material picking component, a rotating component that drives the material picking component to rotate around an axis, and a lifting rod component that drives one end of the material picking component to lift. The principle is that the rotating component tinns one side of the network transformer, and after returning it to its original position, the lifting rod component lifts and tilts one end of the tinned network transformer, causing excess solder dross on the leads to flow and collect at the bottom under gravity and fall off, making it less likely for the leads to solder joints. However, in this tinning machine structure, the material picking component needs to both rotate and lift one end. Therefore, one end of the material picking component needs to be hinged to one of its rotating terminals, while the other end is suspended relative to another rotating terminal to connect to a cylinder. The rotating terminals at both ends are then rotatably mounted on a moving mechanism via bearings. After the network transformer completes single-sided tinning, the pick-up assembly is in a deflected state. When lifting it on one side at this time, the lifting action at one end of the pick-up assembly is actually an oblique ascent. This not only reduces the lifting height of the pick-up assembly, affecting the molten solder dripping effect, but also, due to the complex installation structure and reduced structural stability of the lifting rod assembly, the heavy gravity during deflection can cause the pick-up assembly to easily rub against the side wall of the rotating terminal during lifting, resulting in jamming. Therefore, improvements are necessary. Utility Model Content

[0004] The purpose of this invention is to provide an automatic tin-dipping machine with a more stable structure and better tin-dipping effect.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An improved automatic tin-dipping machine includes a clamping device, a gantry frame, a single-end lifting device, and a lifting drive device.

[0007] The clamping device is used to form a long clamping space, including two clamping plates arranged opposite each other, a plurality of clamping cylinders distributed along the length direction of the clamping plates for driving the two clamping plates to open and close, and a mounting beam for mounting the clamping cylinders; the mounting beam is arranged parallel to the length direction of the clamping space.

[0008] The gantry frame is arranged parallel to the outside of the mounting beam and is used to rotatably install the mounting beam. It includes a movable upright plate arranged parallel to the mounting beam and two vertical and opposite side plates. The upper ends of the two side plates are respectively fixed to the two ends of the movable upright plate. The mounting beam is rotatably installed between the bottom ends of the two side plates through bearings, and at least one of the side plates is equipped with a rotation drive assembly for driving the mounting beam to rotate.

[0009] A single-end lifting device is used to lift one end of the gantry frame upwards. It includes a mounting horizontal plate arranged parallel to the rear of the movable upright plate, a fixed upright plate fixed to the mounting horizontal plate and arranged parallel to the movable upright plate, one end of the movable upright plate being rotatably mounted on the fixed upright plate via a rotating shaft, and an arc-shaped guide structure concentric with the rotating shaft being provided between the movable upright plate and the fixed upright plate. At the end away from the rotating shaft, a first lifting drive assembly is provided on the mounting horizontal plate. The movable end of the first lifting drive assembly is rotatably connected to the movable upright plate to drive the movable upright plate to rotate around the rotating shaft.

[0010] The lifting drive device is used to drive the entire mounting plate to rise and fall.

[0011] In a preferred embodiment, the free end of the movable upright plate extends into an arm along its length. The first lifting drive assembly is disposed above the arm and includes a first motor fixedly mounted to the mounting horizontal plate, a first lead screw pair driven by the first motor, a horizontal lifting plate driven to lift by the first lead screw pair, a guide column and guide sleeve structure vertically mounted between the mounting horizontal plate and the lifting plate, and a connecting rod vertically arranged and rotatably connected at both ends between the lifting plate and the arm.

[0012] In a preferred embodiment, the arc-shaped guide structure is a guide rail pair with an arc-shaped trajectory disposed between the movable upright plate and the fixed upright plate. Alternatively, the arc-shaped guide structure includes a guide post protruding vertically from the front side of the fixed upright plate, and an arc-shaped guide groove formed on the movable upright plate and adapted to the guide post.

[0013] In a preferred embodiment, a magnetic suction assembly is further provided between the two clamping plates. The magnetic suction assembly includes a magnetic suction strip arranged parallel to the length direction of the clamping space, and a first cylinder fixed to the mounting beam for driving the magnetic suction strip to rise and fall.

[0014] In a preferred embodiment, an ejector assembly is further provided between the two clamping plates. The ejector assembly includes an ejector bar arranged parallel to the length direction of the clamping space, and a second cylinder fixed to the mounting beam for driving the ejector bar to rise and fall. The ejector bar has a through groove with a width adapted to the magnetic strip to avoid obstructing the magnetic strip.

[0015] In a preferred embodiment, the mounting beam includes a transverse top plate, two end plates fixed to both ends of the top plate, and pins fixed to the outer side of the end plates in a direction parallel to the top plate.

[0016] In a preferred embodiment, the rotary drive assembly includes a second motor mounted parallel to the pin on the side plate, and a synchronous belt assembly connecting the second motor and the pin.

[0017] The beneficial effects of this utility model are as follows: Compared with the prior art, the lifting action is performed by a single-end lifting device to lift the gantry and clamping device as a whole. Even if the clamping device is in a deflected state, the lifting action can still rise vertically. This not only results in a higher lifting height, but also ensures that the molten solder drips completely, thus avoiding poor solder joints. The arc-shaped guide structure can enhance the stability of the movable upright plate during the swinging process. The clamping device only needs to complete the rotation action, without performing an independent lifting action. Therefore, the overall structure and stability are enhanced, and there will be no jamming during the lifting process. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure of the tin-dipping machine in the embodiment;

[0020] Figure 2 This is an exploded view of the clamping device components in the embodiment;

[0021] Figure 3 This is a schematic diagram of the single-end lifting device in the embodiment. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] refer to Figures 1 to 3 An improved automatic tin-dipping machine is used for batch tin-dipping of pins with single or double rows of dense pins, such as network transformers and magnetic ring inductors; it includes a clamping device 1, a gantry 2, a single-end lifting device 3, and a lifting drive device 4.

[0024] The clamping device 1 is used to form an elongated clamping space, including two clamping plates 11 arranged opposite to each other, a plurality of clamping cylinders 12 distributed along the length direction of the clamping plates 11 for driving the two clamping plates 11 to open and close, and a mounting beam 13 for mounting the clamping cylinders 12; the mounting beam 13 is arranged parallel to the length direction of the clamping space.

[0025] The gantry frame 2 is arranged parallel to the outside of the mounting beam 13 and is used to rotatably install the mounting beam 13. It includes a movable upright plate 21 arranged parallel to the mounting beam 13 and two vertical and opposite side plates 22. The upper ends of the two side plates 22 are respectively fixed to the two ends of the movable upright plate 21. The mounting beam 13 is rotatably installed between the bottom ends of the two side plates 22 through bearings, and at least one of the side plates 22 is equipped with a rotation drive assembly for driving the mounting beam 13 to rotate.

[0026] The single-end lifting device 3 is used to lift one end of the gantry frame 2 upward. It includes a mounting horizontal plate 31 arranged parallel to the rear of the movable vertical plate 21, and a fixed vertical plate 32 fixed on the mounting horizontal plate 31 and arranged parallel to the movable vertical plate 21. One end of the movable vertical plate 21 is rotatably mounted on the fixed vertical plate 32 via a rotating shaft 321. An arc-shaped guide structure 322 concentric with the rotating shaft 321 is provided between the movable vertical plate 21 and the fixed vertical plate 32. At the end away from the rotating shaft 321, a first lifting drive assembly 33 is provided on the mounting horizontal plate 31. The movable end of the first lifting drive assembly 33 is rotatably connected to the movable vertical plate 21 to drive the movable vertical plate 21 to rotate around the rotating shaft 321.

[0027] The lifting drive device 4 is used to drive the mounting plate 31 to lift as a whole.

[0028] During operation, the clamping device 1 first clamps several tin-dip products arranged in a straight line. Typically, the clamping plate 11 clamps both sides of the tin-dip product housing, exposing the pins on both sides. Next, the rotation drive assembly on the gantry 2 deflects the clamping device 1 by a certain angle to facilitate tin-dip of the pins on one side. Then, the lifting drive device 4 drives the mounting plate 31 to rise and fall as a whole, so that the pins on one side of each network transformer are tin-dipped and then raised. Then, the single-end lifting device 3 drives the vertical plate to rotate around the rotating shaft 321, thereby tilting the gantry 2 and the clamping device 1 as a whole to complete the molten solder dripping from the pins on one side. Finally, after the lifting drive device 4 resets, the rotation drive assembly rotates the clamping device 1 by a certain angle again to complete the tin-dip and dripping of the pins on the other side. Compared to existing technologies, the lifting action is performed by a single-end lifting device 3 to lift the gantry 2 and the clamping device 1 as a whole. Even if the clamping device 1 is in a deflected state, the lifting action can still rise vertically. This not only results in a higher lifting height but also ensures that the molten solder drips completely, thus avoiding poor solder joints. The arc-shaped guide structure 322 can enhance the stability of the movable upright plate during the swinging process. The clamping device 1 only needs to complete the rotation action without performing an independent lifting action. Therefore, the overall structure and stability are enhanced, and there will be no jamming during the lifting process.

[0029] In a preferred embodiment, the free end of the movable upright plate 21 extends into an arm 211 along its length. The first lifting drive assembly 33 is disposed above the arm 211 and includes a first motor 331 fixedly mounted to the mounting horizontal plate 31, a first lead screw pair 332 driven by the first motor 331, a horizontal lifting plate 333 driven to lift by the first lead screw pair 332, a guide post and guide sleeve structure 334 vertically mounted between the mounting horizontal plate 31 and the lifting plate 333, and a connecting rod 335 vertically arranged and rotatably connected at both ends between the lifting plate 333 and the arm 211.

[0030] Furthermore, the arc-shaped guide structure 322 is a guide rail pair disposed on the arc-shaped trajectory between the movable upright plate 21 and the fixed upright plate 32. In other embodiments, the arc-shaped guide structure 322 may also include a guide post protruding vertically from the front side of the fixed upright plate, and an arc-shaped guide groove formed on the movable upright plate and adapted to the guide post.

[0031] During operation, the first motor 331 drives the lifting plate 333 to precisely raise and lower its height via the first lead screw pair 332, while the guide column and guide sleeve structure 334 ensures the stability of the lifting plate 333 during lifting. When the lifting plate 333 rises and falls, the connecting rod 335 drives the support arm 211 to rise and fall, causing the movable upright plate 21 to rotate and sway around the pivot 321, thereby driving the gantry frame 2 and the clamping device 1 to rise, tilt, or fall back to the center position. In other embodiments, the first motor 331 and the first lead screw pair 332 can be replaced with a linear cylinder or a linear transmission structure such as a rack and pinion; alternatively, the support arm 211 can be directly driven to rise and fall by a linear drive device vertically mounted on the mounting plate 31, with the movable end of the linear device rotatably connected to the support arm 211.

[0032] In a preferred embodiment, a magnetic suction assembly 14 is further provided between the two clamping plates 11. The magnetic suction assembly 14 includes a magnetic suction strip 141 arranged parallel to the length direction of the clamping space, and a first cylinder 142 fixed on the mounting beam 13 for driving the magnetic suction strip 141 to rise and fall.

[0033] Furthermore, an ejection assembly 15 is provided between the two clamping plates 11. The ejection assembly 15 includes an ejection bar 151 arranged parallel to the length direction of the clamping space, and a second cylinder 152 fixed on the mounting beam 13 for driving the ejection bar 151 to rise and fall. The ejection bar 151 has a through groove whose width is adapted to the magnetic strip 141 to avoid obstructing the magnetic strip 141.

[0034] During operation, the magnetic ring inside the tin-dipped product, along with the magnetic suction strip 141, ensures the reliability of clamping and the neatness of the tin-dipped product arrangement, allowing the pins of each tin-dipped product to be tin-dipped evenly. The ejector assembly 15 facilitates the more reliable ejection and unloading of all tin-dipped products after tin-dipping. Since the magnetic suction strip 141 passes through the through slot of the ejector bar 151 and the width of the magnetic suction strip 141 is adapted to the through slot, the ejector bar 151 can eject the tin-dipped product by abutting against the pins on the outside of the tin-dipped product housing during descent.

[0035] In a preferred embodiment, the mounting beam 13 includes a transverse top plate 131, two end plates 132 fixed to both ends of the top plate 131, and a pin 133 fixed to the outside of the end plates 132 in a direction parallel to the top plate 131.

[0036] Furthermore, the rotary drive assembly includes a second motor mounted on the side plate 22 parallel to the pin 133, and a synchronous belt assembly connecting the second motor and the pin 133.

[0037] The mounting beam 13 is equipped with a top plate 131 and an end plate 132, and the pin 133 is mounted on the end plate 132. This allows the center of gravity of the clamping device 1 to coincide with the rotation axis 321, and makes the yaw amplitude of the clamping device 1 during rotation larger, thus making rotation more labor-saving and energy-efficient. In other embodiments, the synchronous belt assembly can also be replaced by a gear assembly.

[0038] The above description does not limit the technical scope of this utility model. Any modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. An improved automatic tin-dipping machine, characterized in that: Includes clamping device, gantry frame, single-end lifting device, and lifting drive device; The clamping device is used to form a long clamping space, including two clamping plates arranged opposite each other, a plurality of clamping cylinders distributed along the length direction of the clamping plates for driving the two clamping plates to open and close, and a mounting beam for mounting the clamping cylinders; the mounting beam is arranged parallel to the length direction of the clamping space. The gantry frame is arranged parallel to the outside of the mounting beam and is used to rotatably install the mounting beam. It includes a movable upright plate arranged parallel to the mounting beam and two vertical and opposite side plates. The upper ends of the two side plates are respectively fixed to the two ends of the movable upright plate. The mounting beam is rotatably installed between the bottom ends of the two side plates through bearings, and at least one of the side plates is equipped with a rotation drive assembly for driving the mounting beam to rotate. A single-end lifting device is used to lift one end of the gantry frame upwards. It includes a mounting horizontal plate arranged parallel to the rear of the movable upright plate, a fixed upright plate fixed to the mounting horizontal plate and arranged parallel to the movable upright plate, one end of the movable upright plate being rotatably mounted on the fixed upright plate via a rotating shaft, and an arc-shaped guide structure concentric with the rotating shaft being provided between the movable upright plate and the fixed upright plate. At the end away from the rotating shaft, a first lifting drive assembly is provided on the mounting horizontal plate. The movable end of the first lifting drive assembly is rotatably connected to the movable upright plate to drive the movable upright plate to rotate around the rotating shaft. The lifting drive device is used to drive the entire mounting plate to rise and fall.

2. The improved automatic tin-dipping machine according to claim 1, characterized in that: An arm extends from the free end of the movable upright plate along its length. The first lifting drive assembly is disposed above the arm and includes a first motor fixedly installed with the mounting horizontal plate, a first lead screw pair driven by the first motor, a horizontal lifting plate driven to lift by the first lead screw pair, a guide column and guide sleeve structure vertically installed between the mounting horizontal plate and the lifting plate, and a connecting rod vertically arranged and rotatably connected at both ends between the lifting plate and the arm.

3. An improved automatic tin-dipping machine according to claim 2, characterized in that: The arc-shaped guide structure is a guide rail pair with an arc-shaped trajectory located between the movable upright plate and the fixed upright plate.

4. An improved automatic tin-dipping machine according to claim 2, characterized in that: The arc-shaped guide structure includes a guide post protruding vertically from the front side of the fixed upright plate, and an arc-shaped guide groove formed on the movable upright plate and adapted to the guide post.

5. An improved automatic tin-dipping machine according to claim 1, characterized in that: A magnetic suction assembly is also provided between the two clamping plates. The magnetic suction assembly includes a magnetic suction strip arranged parallel to the length direction of the clamping space, and a first cylinder fixed on the mounting beam for driving the magnetic suction strip to rise and fall.

6. An improved automatic tin-dipping machine according to claim 5, characterized in that: An ejector assembly is also provided between the two clamping plates. The ejector assembly includes an ejector bar arranged parallel to the length direction of the clamping space, and a second cylinder fixed to the mounting beam for driving the ejector bar to rise and fall. The ejector bar has a through groove with a width adapted to the magnetic strip to avoid obstructing the magnetic strip.

7. An improved automatic tin-dipping machine according to claim 1, characterized in that: The mounting beam includes a transverse top plate, two end plates fixed to both ends of the top plate, and pins fixed to the outer side of the end plates in a direction parallel to the top plate.

8. An improved automatic tin-dipping machine according to claim 7, characterized in that: The rotary drive assembly includes a second motor mounted parallel to the pin on the side plate, and a synchronous belt assembly connecting the second motor and the pin.

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