A mold device for casting and molding of an ultra-long thin plate-shaped solder

Abstract

The utility model relates to solder forming equipment technical field especially relates to a mould device for long thin plate -shaped solder casting forming, including machine body, the surface of machine body is established with processing cavity, the bottom fixedly connected with lower mould seat of processing cavity, the top end of lower mould seat is connected with lower cavity, the symmetrical both ends of lower cavity all are connected with extruding block of sliding, the side bottom end fixedly connected with clamping plate of extruding block close to lower cavity, the end sliding connection of extruding block bottom and far away clamping plate has guide pillar, guide pillar is inserted with lower mould seat, the bottom fixedly connected with arc convex block of lower cavity, just need to push both ends extruding block, can easily take out old cavity, whole process does not need tool, shortens downtime, flexible adaptation multi -specification solder production, the arc convex block in lower cavity can accurately offset the shrinkage depression produced because of thermal expansion and cold shrink when solder cooling, ensure that the solder flatness reaches the standard after forming, give consideration to production efficiency and product quality, satisfy the actual demand of batch production.

Description

Technical Field

[0001] This utility model relates to the field of solder forming equipment technology, and in particular to a mold device for casting ultra-long thin plate-shaped solder. Background Technology

[0002] The ultra-long thin plate solder casting mold device achieves high-precision, low-defect forming of ultra-long thin plate solder by optimizing the cavity structure, casting system, cooling system and demolding mechanism. Its technical advantages include high precision, low defect rate, high production efficiency and strong applicability, and it is widely used in the fields of electronics manufacturing, aerospace, automotive industry and new energy.

[0003] Existing ultra-long thin plate solder casting molds have many design flaws that severely restrict production efficiency and product quality. The cavity and mold base are mostly rigidly connected integrated structures, lacking convenient disassembly and assembly designs. When the cavity is worn, deformed, or needs to be changed to a different thickness specification, the entire lower mold base must be replaced, leading to a surge in maintenance costs and long downtime, which seriously affects production continuity. At the same time, it is impossible to repair the cavity individually with high precision, shortening the overall service life of the mold. In terms of molding accuracy, the bottom of the cavity generally adopts a pure flat design, without considering the cooling and shrinkage characteristics of ultra-long thin plate solder. The uniform shrinkage force along the length direction during solder cooling will cause the middle area to sink and the edges to warp, which cannot meet the requirements of high-precision scenarios such as electronic packaging. Utility Model Content

[0004] In view of the above-mentioned installation and accuracy issues, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a mold device for casting ultra-long thin plate-shaped solder, including a body, a processing cavity is formed on the surface of the body, a lower mold base is fixedly connected to the bottom of the processing cavity, a lower cavity is snapped into the top of the lower mold base, extrusion blocks are slidably connected to both ends of the lower cavity, a clamping plate is fixedly connected to the bottom end of the extrusion block near the lower cavity, a guide post is slidably connected to the bottom end of the extrusion block away from the clamping plate, the guide post is inserted into the lower mold base, an arc-shaped protrusion is fixedly connected to the bottom of the lower cavity, a stepped groove is formed at the top of the lower cavity, a plurality of evenly distributed through holes are formed at the bottom of the lower cavity, ejector pins are slidably connected to the inner wall of the through holes, and the bottom ends of the plurality of ejector pins are fixedly connected to the same moving plate.

[0006] As a preferred embodiment of the mold device for casting ultra-long thin plate-shaped solder according to the present invention, the lower cavity is provided with mounting grooves at both ends, and the mounting grooves are slidably connected to the surface of the extrusion block. A return spring is connected between the end of the extrusion block near the lower cavity and the mounting groove. Slider blocks are fixedly connected to both sides of the extrusion block, and the surface of the slider is slidably connected to the mounting groove.

[0007] As a preferred embodiment of the mold device for casting ultra-long thin plate-shaped solder according to the present invention, wherein: a slot is provided at the bottom of the mounting groove, which is slidably connected to the surface of the card plate; the cross-section of the card plate is "L" shaped; and a sliding groove is provided at the bottom end of the extrusion block, which is slidably connected to the top surface of the guide post.

[0008] As a preferred embodiment of the mold device for casting ultra-long thin plate-shaped solder according to the present invention, the top end of the ejector pin is fixedly connected to a silicone pad, and multiple evenly distributed vent holes are opened in the lower cavity, with an anti-clogging filter screen fixedly connected to the top end of the inner wall of the vent hole.

[0009] As a preferred embodiment of the mold device for casting ultra-long thin plate-shaped solder according to the present invention, a push cylinder is fixedly installed inside the bottom end of the machine body, and the output end of the push cylinder is fixedly connected to the bottom end of the moving plate.

[0010] As a preferred embodiment of the mold device for casting ultra-long thin plate-shaped solder according to this utility model, a hydraulic cylinder is fixedly installed at the top of the machine body, an upper template is fixedly connected to the output end of the hydraulic cylinder, a stepped boss is fixedly connected to the bottom end of the upper template, and after the upper template and the lower cavity are closed, the surface of the stepped boss fits into the stepped groove; a flow channel is opened on the inner wall of the upper template, and an injection pipe communicating with the flow channel is fixedly connected to the top of the upper template.

[0011] The beneficial effects of this utility model are: When changing the lower cavity, this device simply requires pushing the extrusion blocks at both ends to compress the return spring, causing the clamping plate to disengage from the slot, making it easy to remove the old cavity. When installing the new cavity, push the extrusion blocks to align with the guide post and insert them. After releasing, the spring returns to its original position, locking the clamping plate in place. The entire process requires no tools, reducing downtime and flexibly adapting to the production of various solder specifications. At the same time, the arc-shaped protrusions inside the lower cavity can precisely offset the shrinkage caused by thermal expansion and contraction when the solder cools, ensuring that the flatness of the solder meets the standards after molding, fundamentally improving the molding quality. The overall structure is simple and convenient to operate, balancing production efficiency and product quality, and meeting the actual needs of mass production. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the injection tube installation structure of this utility model; Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the overall structure of the extrusion block of this utility model; Figure 5 This is a schematic diagram of the arc-shaped protrusion mounting structure of this utility model; Figure 6 This is a schematic diagram of the anti-clogging filter installation structure of this utility model.

[0013] Explanation of reference numerals in the attached drawings: 1. Machine body; 2. Upper mold plate; 3. Lower mold base; 4. Lower cavity; 5. Extrusion block; 6. Return spring; 7. Slot; 8. Plate; 9. Guide post; 10. Slider; 11. Stepped boss; 12. Injection pipe; 13. Stepped groove; 14. Arc-shaped protrusion; 15. Vent hole; 16. Anti-clogging filter; 17. Moving plate; 18. Through hole; 19. Ejector pin; 20. Silicone pad. Detailed Implementation

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Example 1

[0015] Reference Figures 1-4 This is the first embodiment of the present invention, which provides a mold device for casting ultra-long thin plate-shaped solder. It includes a body 1, a processing cavity is formed on the surface of the body 1, a lower mold base 3 is fixedly connected to the bottom of the processing cavity, a lower cavity 4 is snapped into the top of the lower mold base 3, extrusion blocks 5 are slidably connected to both ends of the lower cavity 4, a clamping plate 8 is fixedly connected to the bottom end of the extrusion block 5 near the lower cavity 4, a guide post 9 is slidably connected to the bottom end of the extrusion block 5 away from the clamping plate 8, the guide post 9 is inserted into the lower mold base 3, an arc-shaped protrusion 14 is fixedly connected to the bottom of the lower cavity 4, a stepped groove 13 is formed at the top of the lower cavity 4, a plurality of evenly distributed through holes 18 are formed at the bottom of the lower cavity 4, ejector pins 19 are slidably connected to the inner wall of the through holes 18, and the bottom ends of the plurality of ejector pins 19 are fixedly connected to the same moving plate 17.

[0016] The lower cavity 4 has mounting grooves at both ends, which are slidably connected to the surface of the extrusion block 5. A return spring 6 is connected between the end of the extrusion block 5 near the lower cavity 4 and the mounting groove. Slider 10 is fixedly connected to both the left and right sides of the extrusion block 5, and the surface of the slider 10 is slidably connected to the mounting groove.

[0017] The bottom of the mounting groove has a slot 7, which is slidably connected to the surface of the card plate 8. The cross-section of the card plate 8 is "L" shaped. The bottom end of the extrusion block 5 has a sliding groove, which is slidably connected to the top surface of the guide post 9.

[0018] During use, when it is necessary to replace the lower cavity 4 to accommodate different specifications of ultra-long thin plate solder, the operator pushes the extrusion block 5 in the mounting slots at both ends of the lower cavity 4 by hand. After being subjected to force, the extrusion block 5 moves into the mounting slot, and at the same time compresses the reset spring 6 connected between the extrusion block 5 and the mounting slot. As the extrusion block 5 moves, the "L"-shaped clamping plate 8 fixedly connected to the bottom end near the lower cavity 4 will move synchronously and gradually disengage from the clamping slot 7 opened at the bottom of the mounting slot. At this time, the clamping relationship between the lower cavity 4 and the lower mold base 3 is released.

[0019] During the process of pushing the extrusion block 5, the bottom sliding groove of the extrusion block 5 slides relative to the top surface of the guide post 9. The guide post 9 provides stable guidance for the movement of the extrusion block 5. At the same time, the sliders 10 on the left and right sides of the extrusion block 5 slide along the inner wall of the mounting groove to further ensure that the extrusion block 5 moves smoothly. After the clamping plate 8 is completely disengaged from the clamping groove 7, the extrusion block 5 can be pulled upward to drive the lower cavity 4 to be completely disengaged from the lower mold base 3, thus completing the disassembly of the old lower cavity 4.

[0020] When installing the new lower cavity 4, first push the extrusion blocks 5 at both ends of the new lower cavity 4 in the same way to compress the return spring 6 and retract the clamping plate 8 into the installation groove. Then, align the lower cavity 4 with the lower mold base 3, align the top of the guide post 9 with the guide hole on the lower mold base 3 and insert it to ensure that the lower cavity 4 is placed stably. After placement, the operator releases the extrusion blocks 5, the return spring 6 is released, and the extrusion blocks 5 are pushed to move out of the installation groove. The extrusion blocks 5 drive the clamping plate 8 to re-clamp into the clamping groove 7. At this time, the lower cavity 4 is firmly connected to the lower mold base 3, and the installation of the new lower cavity 4 is completed. The entire replacement and installation process does not require tools, is easy to operate, and improves the flexibility of the mold to adapt to different specifications of solder. Example 2

[0021] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: a silicone pad 20 is fixedly connected to the top of the ejector pin 19, and a plurality of evenly distributed exhaust holes 15 are opened in the lower cavity 4. An anti-clogging filter screen 16 is fixedly connected to the top of the inner wall of the exhaust hole 15.

[0022] A push cylinder is fixedly installed inside the bottom of the body 1, and the output end of the push cylinder is fixedly connected to the bottom of the moving plate 17.

[0023] A hydraulic cylinder is fixedly installed at the top of the body 1. The output end of the hydraulic cylinder is fixedly connected to the upper template 2. The bottom end of the upper template 2 is fixedly connected to the stepped boss 11. After the upper template 2 and the lower cavity 4 are closed, the surface of the stepped boss 11 fits into the stepped groove 13. A flow channel is opened on the inner wall of the upper template 2. An injection pipe 12 communicating with the flow channel is fixedly connected to the top of the upper template 2.

[0024] During use, when casting the solder, the hydraulic cylinder fixedly installed at the top of the machine body 1 is started first. The output end of the hydraulic cylinder pushes the upper template 2 to move downward. The stepped boss 11 at the bottom of the upper template 2 gradually approaches the stepped groove 13 at the top of the lower cavity 4. Finally, the upper template 2 and the lower cavity 4 are completely closed. The surface of the stepped boss 11 is tightly attached to the inner wall of the stepped groove 13, forming a sealed casting space.

[0025] Subsequently, the molten solder enters the flow channel through the injection pipe 12 at the top of the upper mold plate 2, and then flows into the lower cavity 4. During the solder filling process in the lower cavity 4, the air in the cavity is quickly discharged through multiple evenly distributed vent holes 15 opened in the lower cavity 4, avoiding the generation of air bubbles inside the solder. For tin-lead solder and lead-free solder commonly used for ultra-long thin plates, when the liquid solder comes into contact with the vent holes 15 with a small diameter, the surface tension will form a "tension film" at the orifice, preventing the solder from flowing into the orifice. At the same time, the vent holes 15 penetrate the lower mold base 3, and the small diameter and long channel further increase the resistance to solder flow. Even if there is slight pressure during casting, the liquid solder cannot break through the dual constraints of surface tension and channel resistance and will not flow out from the vent holes 15. The anti-clogging filter 16 fixedly connected to the top of the inner wall of the vent holes 15 further blocks the molten solder from entering the vent holes 15, prevents channel blockage, and ensures continuous and effective venting.

[0026] After the solder is injected, during the cooling process, the arc-shaped protrusion 14 fixedly connected to the bottom of the lower cavity 4 will play a role. When the solder contracts due to thermal expansion and contraction, the micro-convex structure of the arc-shaped protrusion 14 can offset the depression caused by the contraction, ensuring that the flatness of the solder after forming meets the requirements. After the solder is completely cooled and formed, the push cylinder inside the bottom of the machine body 1 is activated, and the output end of the cylinder is pushed to move the moving plate 17 upward. The multiple ejector pins 19 fixedly connected to the top of the moving plate 17 will slide upward synchronously along the inner wall of the through hole 18 at the bottom of the lower cavity 4.

[0027] The silicone pad 20 at the top of the ejector pin 19 first contacts the bottom surface of the solder. As the ejector pin 19 continues to rise, the silicone pad 20 applies a uniform ejection force to the finished solder to prevent the solder surface from being scratched. Finally, the ejector pin 19 completely pushes the solder out of the lower cavity 4, completing the demolding. After demolding, the cylinder is pushed to move the moving plate 17 and the ejector pin 19 to reset, waiting for the next casting.

[0028] The remaining structure is the same as that in Example 1.

[0029] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A mold device for casting ultra-long thin plate-shaped solder, comprising a body (1), wherein a processing cavity is formed on the surface of the body (1), and a lower mold base (3) is fixedly connected to the bottom of the processing cavity, characterized in that: The lower mold base (3) is fitted with a lower cavity (4) at its top end. Both ends of the lower cavity (4) are slidably connected to extrusion blocks (5). The bottom end of the extrusion block (5) near the lower cavity (4) is fixedly connected to a clamping plate (8). The bottom end of the extrusion block (5) away from the clamping plate (8) is slidably connected to a guide post (9). The guide post (9) is inserted into the lower mold base (3). The bottom of the lower cavity (4) is fixedly connected to an arc-shaped protrusion (14). The top end of the lower cavity (4) is provided with a stepped groove (13). The bottom of the lower cavity (4) is provided with multiple evenly distributed through holes (18). The inner wall of the through holes (18) is slidably connected to ejector pins (19). The bottom ends of the multiple ejector pins (19) are fixedly connected to the same moving plate (17).

2. The mold device for casting ultra-long thin plate-shaped solder according to claim 1, characterized in that: The lower cavity (4) has mounting grooves at both ends. The mounting grooves are slidably connected to the surface of the extrusion block (5). A return spring (6) is connected between the end of the extrusion block (5) near the lower cavity (4) and the mounting groove. Slider (10) is fixedly connected to both the left and right sides of the extrusion block (5). The surface of the slider (10) is slidably connected to the mounting groove.

3. The mold device for casting ultra-long thin plate-shaped solder according to claim 2, characterized in that: The bottom of the mounting groove is provided with a slot (7), which is slidably connected to the surface of the card plate (8). The cross-section of the card plate (8) is "L" shaped. The bottom end of the extrusion block (5) is provided with a sliding groove, which is slidably connected to the top surface of the guide post (9).

4. The mold device for casting ultra-long thin plate-shaped solder according to claim 1, characterized in that: The top of the ejector pin (19) is fixedly connected to a silicone pad (20), and a plurality of evenly distributed exhaust holes (15) are opened in the lower cavity (4). The top of the inner wall of the exhaust hole (15) is fixedly connected to an anti-clogging filter (16).

5. A mold device for casting ultra-long thin plate-shaped solder according to claim 3, characterized in that: A push cylinder is fixedly installed inside the bottom end of the body (1), and the output end of the push cylinder is fixedly connected to the bottom end of the moving plate (17).

6. The mold device for casting ultra-long thin plate-shaped solder according to claim 1, characterized in that: A hydraulic cylinder is fixedly installed at the top of the body (1), and an upper template (2) is fixedly connected to the output end of the hydraulic cylinder. A stepped boss (11) is fixedly connected to the bottom end of the upper template (2). After the upper template (2) and the lower cavity (4) are molded together, the surface of the stepped boss (11) fits into the stepped groove (13). A flow channel is opened on the inner wall of the upper template (2), and an injection pipe (12) communicating with the flow channel is fixedly connected to the top of the upper template (2).

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