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CN-122028233-A - Heating wire forming process

CN122028233ACN 122028233 ACN122028233 ACN 122028233ACN-122028233-A

Abstract

The invention discloses a heating wire forming process which comprises the following steps of S1, S2, S3, respectively installing a heating wire main body on the first filling part and the second filling part, at least partially clamping the heating wire main body into the first filling part or the second filling part, S4, putting the first filling part and the second filling part into a die body, forming a gap cavity between the first filling part and the second filling part, and arranging a plate body in the gap cavity, S5, putting the filling body raw material in the gap cavity, mutually approaching the plate body and the first filling part, S6, mutually approaching the plate body and the second filling part, S7, leaving the gap cavity, S8, re-filling the filling body raw material in the gap cavity, and vertically compacting the filling body.

Inventors

  • DU YIBING
  • WU LIJUAN
  • WEI CHAOHUI
  • WU LIMING
  • WANG HAIXIAN
  • JIANG WEI
  • ZHAO XUN

Assignees

  • 绍兴永昊精密电热器件有限公司

Dates

Publication Date
20260512
Application Date
20260112

Claims (10)

  1. 1. The heating wire forming process is characterized by comprising the following steps of: step S1, extruding and molding a raw material of a filling body (9) into a first filling part (91) from powder; step S2, extruding and molding the raw material of the filling body (9) into a second filling part (92) from powder; Step S3, respectively mounting a heating wire main body (6) on the first filling part (91) and the second filling part (92), wherein the heating wire main body (6) is at least partially clamped into the first filling part (91) or the second filling part (92); S4, placing the first filling part (91) and the second filling part (92) into a die body (1), wherein a clearance cavity (11) is formed between the first filling part (91) and the second filling part (92), and a plate body (8) is arranged in the clearance cavity (11); S5, placing raw materials of the filling body (9) into the clearance cavity (11), wherein the plate body (8) and the first filling part (91) are close to each other so that the heating wire main body (6) mounted on the first filling part (91) is wrapped and compacted by the raw materials of the filling body (9); Step S6, the plate body (8) and the second filling part (92) are mutually close to each other so that the heating wire main body (6) mounted on the second filling part (92) is wrapped and compacted by the raw material of the filling body (9); step S7, the plate body (8) leaves the clearance cavity (11); and S8, filling the raw materials of the filling body (9) into the clearance cavity (11) again, and compacting the filling body (9) up and down.
  2. 2. A heating wire forming process according to claim 1, wherein in step S3, the longitudinal direction of the heating wire main body (6) is the same as the longitudinal direction of the corresponding first filling portion (91) or second filling portion (92).
  3. 3. A heating wire forming process according to claim 1, characterized in that the heating wire bodies (6) are arranged in pairs and at least one pair.
  4. 4. The process for forming the heating wire according to claim 1, wherein in the step S4, the first filling portion (91) and the second filling portion (92) are disposed in a front-back opposite manner, the first filling portion (91) is provided with a first groove (911), the first groove (911) is used for being clamped into the heating wire main body (6), an opening of the first groove (911) faces the second filling portion (92), the second filling portion (92) is provided with a second groove (921) and a third groove (922), the second groove (921) and the third groove (922) are both used for being clamped into the heating wire main body (6), the second groove (921) is located at two sides of the third groove (922), and an opening of the second groove (921) and an opening of the third groove (922) face the first filling portion (91).
  5. 5. A heating wire forming process according to claim 4, wherein the heating wire main body (6) comprises a spiral portion (61), the spiral portion (61) is snapped into the corresponding first groove (911) or second groove (921) or third groove (922), and the spiral portion (61) is of a spiral wire structure.
  6. 6. A heating wire forming process according to claim 4, wherein the cross section of the first groove (911) and the cross section of the second groove (921) are semicircular.
  7. 7. A heating wire forming process according to claim 1, characterized in that the plate body (8) is movable up and down to be inserted up or to be extended out of the die body (1).
  8. 8. The heating wire forming process according to claim 1, wherein a movable seat (2) is fixedly arranged on the outer wall of the die body (1), the movable seat (2) is slidably connected with a base (3), and the movable seat (2) can move back and forth along the inner wall of the base (3).
  9. 9. A heating wire forming process according to claim 8, characterized in that the moving seat (2) comprises a first part (21) and a second part (22), the first part (21) and the second part (22) are detachably connected, the first part (21) and the second part (22) clamp the die body (1), and the first part (21) is driven by a linear driving part (7) to move back and forth.
  10. 10. A heating wire forming process according to claim 8, wherein the bottom surface of the die body (1) is attached to the inner bottom surface of the movable base (2), and in step S8, the packing body (9) is compacted by using a pressing base (5), the pressing base (5) is located above the die body (1), and the pressing base (5) is inserted into the upper end of the die body (1) to compact the packing body (9).

Description

Heating wire forming process Technical Field The invention relates to the technical field of heating wires, in particular to a heating wire forming process. Background The armored heating wire has the characteristics of good insulativity, high heat conduction efficiency and compact structure, and is widely applied to the fields of petrochemical industry, metallurgy, precise instruments and the like. The conventional molding process is generally to directly put the spiral part of the heating wire into a metal sheath, fill the sheath with an insulating filling material such as magnesium oxide powder, and then compact the sheath and the internal components by a cold drawing process. The spiral part of the heating wire is easy to generate radial deviation when filling powder, so that the heating wire is unevenly distributed, the heating consistency of a final product is poor, and the heating wire is partially overheated when serious, so that the service life of the heating element is influenced. Meanwhile, as the filling powder is added along the axial direction of the spiral part of the heating wire, the filling powder is difficult to fully enter the gap of the spiral part when filling, so that the compactness of the filling material is insufficient, the insulating property is reduced, and the heat conduction efficiency is also influenced. Disclosure of Invention The invention aims to overcome the defects in the prior art, and provides a heating wire forming process which is beneficial to improving the heating uniformity of an electric heating wire. The heating wire forming process comprises the following steps of S1, S2, S3, installing heating wire main bodies on the first filling portion and the second filling portion respectively, at least partially clamping the heating wire main bodies into the first filling portion or the second filling portion, S4, placing the first filling portion and the second filling portion into a die body, forming a gap cavity between the first filling portion and the second filling portion, and arranging a plate body in the gap cavity, S5, placing the filling body raw materials into the gap cavity, and mutually approaching the plate body and the first filling portion to enable the heating wire main bodies installed on the first filling portion to be wrapped and compacted by the filling body raw materials, S6, enabling the plate body and the second filling portion to mutually approach to enable the heating wire main bodies installed on the second filling portion to be wrapped and compacted by the filling body raw materials, S7, leaving the gap cavity, S8, and filling the gap cavity with the plate body raw materials up and down again. Further, in step S3, the longitudinal direction of the heating wire main body is the same as the longitudinal direction of the corresponding first filling portion or second filling portion. The heating wire bodies are arranged in pairs and at least one pair is arranged. Further, in step S4, the first filling portion and the second filling portion are disposed in a front-back opposite manner, the first filling portion is provided with a groove, the groove is used for being clamped into the heating wire main body, an opening of the groove faces the second filling portion, the second filling portion is provided with two grooves, the two grooves are all used for being clamped into the heating wire main body, one groove is located on two sides of the other groove, and openings of the two grooves face the first filling portion. Further, the heating wire main body comprises a spiral part, the spiral part is clamped into the corresponding groove, and the spiral part is of a spiral wire structure. The cross sections of the grooves on the first filling part and the cross sections of the grooves on the second filling part are semicircular. Further, the plate body can be moved up and down to be inserted upward or to be protruded downward from the die body. Further, the outer wall fixed mounting of the die body has the movable seat, and movable seat sliding connection has the base, and movable seat can follow the inner wall back and forth movement of base. The movable seat comprises two parts, the two parts are detachably connected, the two parts clamp the die body, and one part is driven by the linear driving part to realize forward and backward movement. Further, the bottom surface of the mold body is attached to the inner bottom surface of the movable seat, and in step S8, the packing body is compacted by using a pressing seat, which is located above the mold body, and the pressing seat is inserted into the upper end of the mold body to compact the packing body. In summary, the invention has the following beneficial effects: The filling bodies are respectively compacted front and back through the plate body to wrap the heating wire main body, so that raw materials (powder) of the filling bodies are extruded inwards along the radial direction of the spiral part,