Bending and shaping device for special-shaped welding ring and forming system applying bending and shaping device

Abstract

The utility model relates to the technical field of shaping processing, in particular to a bending and shaping device of a special-shaped welding ring and a forming system using the same, a bending unit comprises a bending base, a die core and a bending block set, the die core is arranged above the bending base and comprises a shaping portion and a connecting portion, the connecting portion is located in the bending base, and the shaping portion is located in the bending base. The cross section of the shaping part is matched with the inner size and shape of the special-shaped welding ring, the bending block group comprises a plurality of bending blocks, and one end of each bending block is provided with a bending groove matched with the partial side face of the shaping part in shape; the shaping unit comprises a shaping base, a mold core and a shaping pressing block, a discharging groove is formed in the upper surface of the shaping base, the size of the discharging groove is matched with the external size and shape of the special-shaped welding ring, a core placing hole is formed below the discharging groove, the mold core is placed in the core placing hole, and the upper surface of the mold core is flush with the upper surface of the shaping base. Compared with traditional manual bending, the bending device can achieve size accuracy, batch cutting can be carried out after the length is determined, and the appearance is neat.

Description

Technical Field

[0001] This utility model relates to the field of shaping and processing technology, specifically to a bending and shaping device for irregularly shaped welding rings and a forming system using the same. Background Technology

[0002] Implantable ceramic feedthrough connectors are the core components of implantable medical devices and the key to realizing the transmission of electrical stimulation signals. They play a role in signal transmission / filtering, insulation, and sealing, and are essential for the survival and function of implantable medical devices.

[0003] In practical applications of implantable ceramic feeders, in order to form an airtight cavity, it is necessary to seal the ceramic feeder to the metal flange and the ceramic feeder to the transmission line. The material for the sealing connection can be pure gold brazing filler.

[0004] Currently, most implanted ceramic feedthroughs are circular or elliptical. Therefore, during the brazing process, to facilitate assembly and ensure proper fit, the pure gold brazing filler metal needs to be formed into a ring shape. Figure 1 Among them, round brazing filler metal can be produced by a rolling machine, while for oblong brazing filler metal, there are currently two methods: 1. Stamping, the advantage is one-time forming, which guarantees the shape and size; the disadvantage is that it requires mold opening, the delivery time is long, the price is high, it cannot stamp welding rings with a large height-to-diameter ratio, and it is easy to deform; 2. Manual bending of welding rods, the advantage is that it does not require independent mold opening and the cutting is free; the disadvantage is that it cannot guarantee the size and shape, there is incompatibility, multiple adjustments are required, the labor cost is high, and the time consumption is large. Utility Model Content

[0005] To address the technical problems existing in the background art, this utility model provides a bending and shaping device for irregularly shaped welding rings and a forming system using the same.

[0006] The technical solution of this utility model is as follows:

[0007] A bending and shaping device for irregularly shaped welding rings includes a bending unit and a shaping unit;

[0008] The bending unit includes a bending base, a die core, and a bending block assembly. The die core is disposed above the bending base. The die core includes an upper shaping part and a lower connecting part. The connecting part is located inside the bending base. The cross-section of the shaping part matches the inner size and shape of the irregular welding ring. The bending block assembly includes several bending blocks. Each bending block has a bending groove at one end that matches the side shape of the shaping part.

[0009] The shaping unit includes a shaping base, a mold core, and a shaping block. The upper surface of the shaping base has a material feeding groove, the size of which matches the outer size of the irregular welding ring. A core feeding hole is opened below the material feeding groove, and the mold core is placed in the core feeding hole. The upper surface of the mold core is flush with the upper surface of the shaping base. One end of the shaping block is a flat surface, and its size is larger than the outer size of the irregular welding ring.

[0010] Irregularly shaped welding rings include oblong shapes.

[0011] The bending block assembly includes at least two types of bending blocks: one bending block mates with half of the outer surface of the forming part in the width direction, and the other bending block mates with half of the outer surface of the forming part in the length direction.

[0012] The shaping unit and the bending unit share a single mold core. The longitudinal cross-section of the mold core is convex. In the shaping unit, the upper surface of the shaping part of the mold core is flush with the upper surface of the shaping base.

[0013] The material feeding trough and the core feeding trough are axially symmetrical, and their axes of symmetry coincide.

[0014] The depth of the feeding groove should not exceed the thickness of the irregular welded ring.

[0015] The mold core is detachably connected to the bending base and the shaping base.

[0016] The mating surfaces of the shaping and connecting parts are flush with the upper surface of the bending base.

[0017] The shaping block is a rectangular block, and the contact surface size with the irregularly shaped welding ring is smaller than the size of the shaping base.

[0018] A non-circular weld ring forming system includes a straightening unit, a cutting unit, and a shape processing unit, wherein the shape processing unit employs the aforementioned device.

[0019] The beneficial effects of this utility model are as follows:

[0020] (1) This utility model can use coiled brazing filler metal to make irregularly shaped welding rings without the need for separate molds due to different sizes, which greatly reduces the mold opening cost, shortens the production cycle, and achieves size freedom.

[0021] (2) This utility model can produce ring products of various sizes and height-to-diameter ratios. Each process ensures the straightening, bending and shaping of the brazing filler metal without causing deformation.

[0022] (3) Compared with traditional manual bending, this utility model can achieve precise dimensions. After the length is determined, batch cutting can be carried out, and the appearance is neat, which greatly saves labor costs and improves production efficiency. Attached Figure Description

[0023] In the attached diagram:

[0024] Figure 1 The goal is to form pure gold solder;

[0025] Figure 2 This is an overall structural diagram of an irregularly shaped welding ring forming system;

[0026] Figure 3 This is a diagram of the overall structure of the bending unit;

[0027] Figure 4 This is a diagram of the overall structure of the shaping unit;

[0028] Figure 5 This is a schematic diagram illustrating how the bending unit is used.

[0029] Figure 6 This is a diagram illustrating how the shaping unit is used;

[0030] Figure 7 This is a schematic diagram showing the disassembly method of the shaping unit after shaping.

[0031] The components represented by the various reference numerals in the diagram are:

[0032] 1. Straightening unit; 11. Adjusting bearing; 12. Bearing adjusting screw; 13. Traction roller; 14. Straightening pulley; 2. Cutting unit; 21. Cutter; 22. Stop block; 3. Bending unit; 31. Bending base; 32. Bending block assembly; 4. Shaping unit; 41. Shaping base; 42. Shaping pressure block; 5. Irregularly shaped welding ring. Detailed Implementation

[0033] The technical solution of this utility model is as follows:

[0034] See Figure 2 A non-circular weld ring forming system includes a straightening unit 1, a cutting unit 2, and a shape processing unit.

[0035] First, the brazing filler metal sheet is straightened twice using bearings. The traction mechanism uses extruded rubber rollers, which will not cause additional damage to the sheet. The sheet is straightened again using the straightening pulley 14, which can be freely adjusted and is suitable for brazing filler metal of different thicknesses. The cutting length of the brazing filler metal is achieved using a stop baffle, and the cutter 21 is used for rapid cutting.

[0036] Use a bending fixture to bend the cut brazing filler metal to proceed to the next step.

[0037] The shape processing unit uses the following device.

[0038] A bending and shaping device for irregularly shaped weld rings includes a bending unit 3 and a shaping unit 4, such as... Figure 3 and Figure 4 As shown;

[0039] The bending unit 3 includes a bending base 31, a die core, and a bending block assembly 32. The die core is provided above the bending base 31. The die core includes an upper shaping part and a lower connecting part. The connecting part is located inside the bending base 31. The cross-section of the shaping part matches the internal size and shape of the irregular welding ring 5. The bending block assembly 32 includes a number of bending blocks. Each bending block has a bending groove at one end that matches the side shape of the shaping part.

[0040] The shaping unit 4 includes a shaping base 41, a mold core, and a shaping pressure block 42. The upper surface of the shaping base 41 has a material feeding groove, the size of which matches the outer size and shape of the irregular welding ring 5. A core feeding hole is opened below it, and the mold core is placed in the core feeding hole. The upper surface of the mold core is flush with the upper surface of the shaping base 41. One end of the shaping pressure block 42 is flat and its size is larger than the outer size of the irregular welding ring 5.

[0041] The mold core is detachably connected to the bending base 31 and the shaping base 41.

[0042] Further, refer to Figure 5 The mold core can be fixed to the bending base 31 with bolts. The cut brazing material is placed on the long side of the mold core and bent using bending blocks. First, the long side is bent, then one short side is bent, and finally the other short side is bent, so that it initially forms a closed ring.

[0043] After bending and removal, the ends of the brazing filler metal will spring back to some extent, resulting in incomplete ring closure. Finally, shaping unit 4 is needed to reshape it. (Combined with...) Figure 6 To make it easier to understand, the bent brazing filler metal is placed into the feeding groove. This mold core is shared with the previous mold core. The brazing filler metal needs to be slightly higher than the groove. Then, the shaping pressure block 42 is used to apply pressure, so that all sides of the brazing filler metal are squeezed.

[0044] After shaping, due to the diffusion of force, the solder may become stuck between the mold core and the shaping base 41. Therefore, when removing the solder, the shaping base 41 can be moved upwards first. Figure 7 As shown, after the brazing filler metal is detached from the mold core, it can be easily removed, and finally the irregularly shaped weld ring 5 is obtained.

[0045] The irregularly shaped welding ring 5 includes an oblong shape. Currently, most implantable ceramic feeders are circular or oblong. Therefore, in order to facilitate assembly and fit during the brazing process, the welding ring also needs to be made into a circular or oblong shape. Circular welding rings can be achieved using existing technologies, while oblong shapes are currently more difficult to manufacture.

[0046] The bending block assembly 32 includes at least two types of bending blocks, one of which mates with the outer surface of half the width direction of the forming part, and the other bending block mates with the outer surface of half the length direction of the forming part.

[0047] The bending block that mates with the outer surface of half the width of the forming part can largely determine the initial shape of the irregular weld ring 5, and the outer surface that mates with half the length of the forming part can further fix the shape of the irregular weld ring 5.

[0048] Reference Figure 5 The bending block assembly 32 of this utility model includes two first bending blocks that mate with the outer surface of half the width direction of the shaping part, and a second bending block that mates with the outer surface of half the length direction of the shaping part, thereby completing the bending of the irregular welding ring 5.

[0049] Furthermore, when the irregular weld ring 5 is of other shapes, the bending block group 32 needs to adjust the number, shape and arrangement of the first bending block and the second bending block accordingly to match the outer surface of the irregular weld ring 5.

[0050] The shaping unit 4 and the bending unit 3 share a mold core. The longitudinal section of the mold core is convex. In the shaping unit 4, the upper surface of the shaping part of the mold core is flush with the upper surface of the shaping base 41.

[0051] Using a single mold core can reduce costs. The longitudinal cross-section of the mold core is convex, providing stronger support at the bottom and a lower center of gravity, resulting in greater stability.

[0052] The material feeding trough and the core feeding trough are axially symmetrical, and their axes of symmetry coincide.

[0053] The upper surface of the shaping part of the mold core is flush with the upper surface of the shaping base 41.

[0054] Furthermore, the contact surfaces of the shaping and connecting parts are flush with the upper surface of the bending base 31, and the depth of the feeding groove is no greater than the thickness of the irregular welded ring 5. When the pressure block is pressed, all the pressure is applied to the irregular welded ring 5.

[0055] The shaping block 42 is a rectangular block, and the contact surface size with the irregular welding ring 5 is smaller than the size of the shaping base 41.

[0056] The manufacturing process of rectangular blocks is mature and the production cost is low. The size limitation allows the force on the 42 pairs of irregularly shaped welding rings 5 ​​of the shaping block to be more concentrated.

[0057] Compared to traditional manual bending, this invention can achieve precise dimensions. Once the length is determined, batch cutting can be carried out, and the appearance is neat, which greatly saves labor costs and improves production efficiency.

Claims

1. A device for bending and shaping a profiled welding ring, characterized in that It includes a bending unit (3) and a shaping unit (4); The bending unit (3) includes a bending base (31), a mold core and a bending block assembly (32). The mold core is provided above the bending base (31). The mold core includes an upper shaping part and a lower connecting part. The connecting part is located inside the bending base (31). The cross-section of the shaping part matches the internal size and shape of the irregular welding ring (5). The bending block assembly (32) includes several bending blocks. Each bending block has a bending groove at one end that matches the side shape of the shaping part. The shaping unit (4) includes a shaping base (41), a mold core, and a shaping block (42). The upper surface of the shaping base (41) has a material feeding groove, the size of which matches the outer size of the irregular welding ring (5). A core feeding hole is opened below it, and the mold core is placed in the core feeding hole. The upper surface of the mold core is flush with the upper surface of the shaping base (41). One end of the shaping block (42) is a flat surface, and its size is larger than the outer size of the irregular welding ring (5).

2. The device for bending and shaping of profiled welding ring according to claim 1, characterized in that, The irregularly shaped welding ring (5) includes an elongated oval shape.

3. The device for bending and shaping of profiled welding ring according to claim 2, characterized in that, The bending block group (32) includes at least two types of bending blocks, one of which mates with the outer surface of half the width direction of the shaping part, and the other of which mates with the outer surface of half the length direction of the shaping part.

4. The device for bending and shaping of profiled welding ring according to claim 1, characterized in that, The shaping unit (4) and bending unit (3) share a mold core. The longitudinal section of the mold core is convex. In the shaping unit (4), the upper surface of the shaping part of the mold core is flush with the upper surface of the shaping base (41).

5. The device for bending and shaping of profiled welding ring according to claim 4, characterized in that, The feeding trough and the core feeding trough are axially symmetrical, and their axes of symmetry coincide.

6. The device for bending and shaping of profiled welding ring according to claim 4, characterized in that, The depth of the feeding groove is not greater than the thickness of the irregular welding ring (5).

7. The device according to claim 1, wherein The mold core is detachably connected to the bending base (31) and the shaping base (41).

8. The device for bending and shaping of profiled welding ring according to claim 1, characterized in that, The contact surfaces of the shaping part and the connecting part are flush with the upper surface of the bending base (31).

9. The device for bending and shaping of profiled welding ring according to claim 1, characterized in that, The shaping block (42) is a rectangular block, and the contact surface size with the irregular welding ring (5) is smaller than the size of the shaping base (41).

10. A profiled welding ring forming system, characterized by, It includes a straightening unit (1), a cutting unit (2), and a shape processing unit, wherein the shape processing unit employs the apparatus described in any one of claims 1-9.

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