Lead-free tin bar forming production line with automatic feeding

Abstract

The utility model relates to a lead -free tin bar forming production line with automatic feeding belongs to lead -free tin bar production technical field. The lead -free tin bar forming production line with automatic feeding, include: workstation and install the tin bar mould of workstation surface, pouring mechanism, the pouring mechanism includes the locating block of installing the workstation surface, the inner wall sliding connection of locating block has the pouring container, the top of pouring container installs the apron, set up pouring container in the inside of locating block, and set up apron above locating block to reduce the area of tin liquid in pouring container and air contact, thereby reduce the formation speed of tin oxide, to reduce the overall content of pouring container tin oxide, through setting down the blanking mouth of pouring container in the bottom, and through the discharge passage and the discharge mouth intercommunication, make tin liquid from the bottom to tin bar mould flow, can effectively reduce the oxide tin film floating on the surface of tin liquid and enter tin bar mould.

Description

Technical Field

[0001] This utility model relates to the field of lead-free solder bar production technology, and in particular to a lead-free solder bar forming production line with automatic feeding. Background Technology

[0002] Lead-free solder bars are an environmentally friendly soldering material, primarily composed of tin with added silver, copper, and other metals. They contain no lead and are widely used in soldering electronic components. The production line is an automated system that includes a melting furnace, a heat-insulating feeding device, a continuous casting machine, a cooling water tank, a cutting machine, and stacking and packaging equipment. Through precise temperature control and automated linkage, the alloy raw materials are melted, cast, cooled, cut to length, and packaged, ultimately producing high-quality solder bars with uniform composition and a smooth surface.

[0003] In the production process of lead-free solder bars, the molten solder in the melting furnace is usually fed into the forming mold by an automatic solder bar pouring machine using a collaborative robot, thereby forming the solder. The specific steps are as follows: the collaborative robot transports the molten solder through a container to a casting container, and then the casting container is driven by a drive mechanism to pour the molten solder into the mold, thus completing the feeding process. However, since traditional casting containers are directly exposed to the air, the contact area between the molten solder and oxygen is relatively large. This results in a large amount of tin oxide film easily forming on the surface of the molten solder inside the casting container. These films may block the outlet when the casting container is tilted, or a small part of the oxide film may enter the mold. If not cleaned in time, it can easily affect the quality of the solder bars. Utility Model Content

[0004] Therefore, it is necessary to provide a lead-free solder bar forming production line with automatic feeding to address the problem that a large amount of tin oxide generated inside traditional casting containers can easily clog the outlet.

[0005] A lead-free solder bar forming production line with automatic feeding includes: a workbench and a solder bar mold mounted on the surface of the workbench; A pouring mechanism, comprising a positioning block mounted on the surface of a workbench, a pouring container slidably connected to the inner wall of the positioning block, and a cover plate mounted on the top of the pouring container.

[0006] In one embodiment, positioning blocks extend through both sides of the casting container and are fixedly connected to a drive frame. An electric push rod is fixedly connected to the upper surface of the cover plate, and the drive end of the electric push rod is fixedly connected to the lower surface of the drive frame.

[0007] In one embodiment, the positioning block is fixedly connected to a plurality of discharge ports on the side near the solder bar mold, and the discharge ports are correspondingly arranged above the solder bar mold.

[0008] In one embodiment, the inner bottom wall of the positioning block is provided with a plurality of discharge channels communicating with the discharge port, and a top rod is fixedly connected to the top of the discharge channel.

[0009] In one embodiment, the inner bottom wall of the casting container is provided with multiple discharge ports, which are correspondingly arranged with the discharge channel, and an adjusting block is slidably connected inside the discharge port.

[0010] In one embodiment, a counterweight is provided at the top of the adjusting block, the middle to the bottom of the adjusting block is hollow, the top of the adjusting block is closed, and a trigger rod is vertically provided at the center of the adjusting block, the trigger rod being located directly above the top rod.

[0011] In one embodiment, a feeding channel is fixedly connected to the inner wall of the cover plate. The feeding channel is L-shaped and its end is connected to the casting container through the cover plate.

[0012] In one embodiment, a baffle is hinged to the inner wall of the feed channel, and a collection shell is provided at the end of the feed channel away from the cover plate.

[0013] Beneficial effects 1. The casting container is placed inside the positioning block, and a cover plate is installed on top of the positioning block to reduce the area of ​​the molten solder in the casting container in contact with the air, thereby reducing the formation rate of tin oxide and reducing the overall tin oxide content in the casting container; by setting the discharge port of the casting container at the bottom and connecting it to the discharge port through the discharge channel, the molten solder flows from the bottom to the solder bar mold, which can effectively reduce the amount of tin oxide film floating on the surface of the molten solder entering the solder bar mold; 2. By setting the feed inlet to consist of a collecting shell and a curved feed channel, and installing a hinged baffle inside the feed channel, the molten tin can enter the casting container normally, while the feed channel can be blocked after the molten tin enters the casting container, reducing the oxygen content in the casting container and thus further reducing the formation of tin oxide. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram of the overall structure of the casting mechanism of this utility model; Figure 3 This is a schematic diagram showing the installation of the cover plate, feeding channel, and positioning block of this utility model; Figure 4 This is a schematic diagram of the internal structure of the positioning block of this utility model; Figure 5 This is a cross-sectional view of the casting container of this utility model; Figure 6 This is a cross-sectional view of the feeding channel of this utility model.

[0016] Figure label: 100. Workbench; 200. Solder bar mold; 300. Casting mechanism; 310. Positioning block; 311. Discharge port; 312. Discharge channel; 313. Push rod; 320. Casting container; 321. Discharge port; 322. Adjusting block; 330. Cover plate; 340. Electric push rod; 341. Drive frame; 350. Collection shell; 351. Feed channel; 352. Baffle. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] The following is combined Figure 1 - Figure 6 This invention describes a lead-free solder bar forming production line with automatic feeding.

[0019] In one embodiment, a lead-free solder bar forming production line with automatic feeding includes: a workbench 100 and a solder bar mold 200 mounted on the surface of the workbench 100. The pouring mechanism 300 includes a positioning block 310 mounted on the surface of the workbench 100. A pouring container 320 is slidably connected to the inner wall of the positioning block 310, and a cover plate 330 is mounted on the top of the pouring container 320.

[0020] This device is used in the casting process of a lead-free solder bar forming line. It needs to be installed in the production line and work in conjunction with other equipment to complete the production operation. The overall production line consists of: A tin melting furnace, located at the starting end, is used to melt tin ingots; The collaborative robot, specifically the JAKAZu7 model, is positioned between the solder melting furnace and this device. The control system issues commands to drive six joint servo motors to work in coordination, thereby enabling the robotic arm to complete precise positioning and flexible movement within space. The end of the robotic arm is equipped with a solder scoop to transfer the solder from the solder melting furnace to the collection shell 350 in this device. The PLC controller is mounted on the surface of the workbench 100 and is used to program and control electronic devices such as the collaborative robot and the electric actuator 340. A marking rod is provided above the solder bar mold 200 to mark the relevant information of the solder bar onto the surface of the solder bar when it is cooled and formed. The two ends of the marking rod move up and down through a drive mechanism located inside the worktable 100. At the same time, a lifting mechanism is provided inside the solder bar mold 200. After the solder bar is formed, the lifting mechanism will push the solder bar out of the mold for easy handling by the staff.

[0021] like Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, positioning blocks 310 extend through both sides of the casting container 320 and are fixedly connected to drive frames 341. An electric push rod 340 is fixedly connected to the upper surface of the cover plate 330, and the drive end of the electric push rod 340 is fixedly connected to the lower surface of the drive frame 341. Multiple discharge ports 311 are fixedly connected to the side of the positioning block 310 near the solder bar mold 200, and the discharge ports 311 are correspondingly positioned above the solder bar mold 200. Multiple discharge channels 312 communicating with the discharge ports 311 are opened on the inner bottom wall of the positioning block 310, and a push rod 313 is fixedly connected to the top of each discharge channel 312. Multiple discharge ports 321 are opened on the inner bottom wall of the casting container 320, and the discharge ports 321 are correspondingly positioned with the discharge channels 312. An adjusting block 322 is slidably connected inside the discharge port 321. The top of the adjusting block 322 is provided with a counterweight block. The middle to the bottom of the adjusting block 322 is hollow. The top of the adjusting block 322 is closed. A trigger rod is vertically provided at the center of the adjusting block 322. The trigger rod is located directly above the top rod 313.

[0022] In this embodiment, the cover plate 330 and the positioning block 310 are installed at their four corners via connectors, and the two ends of the positioning block 310 are bolted to the two ends of the drive frame 341 via connecting plates extending from its surface. Since this device is not completely sealed, a small amount of tin oxide film will inevitably appear in the pouring container 320. This small amount of tin oxide film will also affect the discharge port 311 after a long period of accumulation. Therefore, this device also needs to periodically disassemble the cover plate 330 to clean the inside of the pouring container 320. After a single pouring is completed, the electric push rod 340 will drive the drive frame 341 to move upward and reset. During this process, the drive frame 341 will drive the pouring container 320 to move upward. At this time, the adjusting block 322 will always be above the top rod 313 under the action of the gravity block at its top. At this time, the adjusting block 322 moves downward relative to the pouring container 320 until the pouring container 320 moves to a certain position, and the top of the adjusting block 322 will cover the discharge port 321. The device uses a gravity block to apply pressure and provide a sealing mechanism to prevent molten solder from flowing out of the discharge port 321. During the ascent of the regulating block 322, although the discharge port 321 is separated from the discharge channel 312, the molten solder, without external force, will still flow vertically from the discharge port 321 to the discharge channel 312. This small portion of molten solder flows slowly in the discharge channel. Before the worker removes the solder bar from the solder bar mold 200, the molten solder continues to flow inside the discharge channel 312 and will not affect normal operations. The corresponding collaborative robot integrates a high-precision force sensor and a vision system to coordinate the scooping action. The volume of its end effector is precisely calculated and matched with the mold cavity capacity. When scooping, the robot senses the liquid surface resistance through force feedback to ensure consistent capacity. During pouring, it monitors the rising state of the liquid surface at the mold gate in real time through visual positioning and dynamically adjusts the pouring angle and speed by the control system. When the liquid surface reaches the critical value, the pouring stops immediately, thereby achieving precise quantitative filling without overflow or shortage.

[0023] like Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, a feed channel 351 is fixedly connected to the inner wall of the cover plate 330. The feed channel 351 is L-shaped, and its end is connected to the casting container 320 through the cover plate 330. A baffle 352 is hinged to the inner wall of the feed channel 351, and a collecting shell 350 is provided at the end of the feed channel 351 away from the cover plate 330.

[0024] In this embodiment, a rectangular opening is provided at the end of the feed channel 351, and a corresponding rectangular opening is also provided on the inner top wall of the cover plate 330. When the molten solder flows to this part, it will fall into the casting container 320 under the action of gravity. Since the casting container 320 is always located inside the positioning block 310 and the feed channel 351 is located inside the cover plate 330, the casting container 320 is always below the feed channel 351 and will not affect the normal feeding.

[0025] Working principle: The collaborative robot scoops the molten solder into the collection shell 350 and enters the casting container 320 through the feeding channel 351. When the molten solder enters the feeding channel 351 through the collection shell 350, its gravitational potential energy will push the bottom of the baffle 352 open and pass through. After all the molten solder has passed through, the baffle 352 returns to its vertical position under its own gravity and blocks the feeding channel 351, thereby reducing the amount of air entering the casting container 320. The molten solder flows from the end opening of the feed channel 351 into the casting container 320 and is stored in the casting container 320. At this time, the controller retracts the electric push rod 340 to drive the drive frame 341 to move downward, thereby causing the casting container 320 to move downward inside the positioning block 310. During the downward movement of the casting container 320, the adjusting block 322 is lifted by the push rod 313 in the discharge channel 312, so that the molten solder in the casting container 320 enters the discharge port 321 through the inside of the adjusting block 322 and flows out from the discharge port 311 through the discharge channel 312, and finally enters the solder bar mold 200.

[0026] It should be noted that the workbench 100, solder bar mold 200, and electric actuator 340 mentioned above are all devices with relatively mature existing technology. The specific model can be selected according to actual needs. At the same time, the electric actuator 340 can be powered by the built-in power supply or by the mains power. The specific power supply method is selected according to the situation and will not be elaborated here.

[0027] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A lead-free solder bar forming production line with automatic feeding, characterized in that, include: Workbench (100) and solder bar mold (200) mounted on the surface of workbench (100); The pouring mechanism (300) includes a positioning block (310) mounted on the surface of the workbench (100), a pouring container (320) slidably connected to the inner wall of the positioning block (310), and a cover plate (330) mounted on the top of the pouring container (320).

2. The lead-free solder bar forming production line with automatic feeding according to claim 1, characterized in that, Positioning blocks (310) extend through both sides of the casting container (320) and are fixedly connected to a drive frame (341). An electric push rod (340) is fixedly connected to the upper surface of the cover plate (330), and the drive end of the electric push rod (340) is fixedly connected to the lower surface of the drive frame (341).

3. The lead-free solder bar forming production line with automatic feeding according to claim 1, characterized in that, The positioning block (310) has multiple discharge ports (311) fixedly connected to the side of the solder bar mold (200) and the discharge ports (311) are respectively located above the solder bar mold (200).

4. The lead-free solder bar forming production line with automatic feeding according to claim 1, characterized in that, The inner bottom wall of the positioning block (310) is provided with multiple discharge channels (312) that communicate with the discharge port (311), and the top of the discharge channel (312) is fixedly connected with a top rod (313).

5. The lead-free solder bar forming production line with automatic feeding according to claim 4, characterized in that, The inner bottom wall of the casting container (320) is provided with multiple discharge ports (321), and the discharge ports (321) are correspondingly provided with the discharge channels (312). An adjusting block (322) is slidably connected inside the discharge port (321).

6. The lead-free solder bar forming production line with automatic feeding according to claim 5, characterized in that, The top of the adjusting block (322) is provided with a counterweight block. The middle to the bottom of the adjusting block (322) is hollow. The top of the adjusting block (322) is closed. A trigger rod is vertically provided at the center of the adjusting block (322). The trigger rod is located directly above the top rod (313).

7. The lead-free solder bar forming production line with automatic feeding according to claim 1, characterized in that, The inner wall of the cover plate (330) is fixedly connected to a feeding channel (351), which is L-shaped. The end of the feeding channel (351) is connected to the casting container (320) through the cover plate (330).

8. The lead-free solder bar forming production line with automatic feeding according to claim 7, characterized in that, The inner wall of the feed channel (351) is hinged with a baffle (352), and a collection shell (350) is provided at one end of the feed channel (351) away from the cover plate (330).

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