Processing technology of metal insert for composite gasket of new energy thermal management system

Abstract

The invention relates to a processing technology of a metal insert for a composite gasket of a new energy thermal management system, which comprises the following steps of: punching a material strip to form a first semi-finished product with a pre-punched hole and a positioning hole; performing primary leveling on the first semi-finished product along the first circular contour to form a second semi-finished product; carrying out primary notching on the second semi-finished product area between the first circular contour and the pre-punched hole to form a third semi-finished product; performing secondary notching on the third semi-finished product to form a fourth semi-finished product; stamping and thinning the fourth semi-finished product to form a fifth semi-finished product; the fifth semi-finished product is subjected to secondary leveling, and a sixth semi-finished product is formed; punching teeth on the sixth semi-finished product to form a seventh semi-finished product; semi-blanking the seventh semi-finished product to form an eighth semi-finished product; leveling the eighth semi-finished product for the third time to form a ninth semi-finished product; performing central punching treatment on the ninth semi-finished product along a fourth circle outline to form a tenth semi-finished product; and the tenth semi-finished product continues to be punched and blanked downwards, and the metal insert is formed.

Description

Technical Field

[0001] This invention relates to the field of metal stamping, and in particular to a metal insert processing technology for composite gaskets in new energy thermal management systems. Background Technology

[0002] Composite gaskets are installed at the sealing joint surface of pipe joints. Through the coordinated action of the mounting components located above and below them, the rubber is compressed in the axial direction of the pipe to achieve a sealing effect. In the Chinese patent application with application number 202511772450.7, the applicant disclosed a deformation-resistant composite gasket for a new energy thermal management system. After the metal insert and rubber are co-composite to form a composite gasket, the design of the groove of the metal insert can limit the deformation displacement of the rubber and effectively ensure the seal. However, the aforementioned application did not disclose the forming process for the metal inserts; In summary, how to achieve the molding of metal inserts has become an urgent problem for researchers in this field. Summary of the Invention

[0003] The technical problem to be solved by this invention is: how to achieve the molding of metal inserts; To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: This invention relates to a metal insert processing technology for composite gaskets in new energy thermal management systems. The technology utilizes a progressive die to sequentially stamp a strip of material to form the metal insert, comprising the following steps: S1: Punch holes in the strip to form a first semi-finished product with pre-punched holes and positioning holes; S2: The first semi-finished product is leveled along the first circular contour to form the second semi-finished product, wherein the thickness within the first circular contour is consistent with the outer circle thickness of the metal insert. S3: The second semi-finished product area between the first circular outline and the pre-punched hole is grooved once to form a third semi-finished product, wherein the third semi-finished product has a plurality of first grooves formed at equal intervals around the center of the pre-punched hole. S4: The third semi-finished product is punched a second time to form a fourth semi-finished product. A second punch with the same structure as the first punch is formed between two adjacent first punches of the fourth semi-finished product. S5: The center of the front and back sides of the fourth semi-finished product is thinned by stamping along the second circular contour to form the fifth semi-finished product, and the inner parts of the first and second punched grooves are located within the second circular contour. S6: Perform a second leveling on the fifth semi-finished product to form the sixth semi-finished product; S7: Punch teeth on the inner parts of the first and second punch grooves located within the second circular contour of the sixth semi-finished product to form a seventh semi-finished product with first teeth, wherein the first and second punch grooves are connected to the corresponding first teeth and form grooves. S8: Perform a downward half-punch on the portion of the seventh semi-finished product along the third circular outline to form an eighth semi-finished product that protrudes from the bottom of the strip. S9: The eighth semi-finished product is leveled three times to form the ninth semi-finished product; S10: The ninth semi-finished product is punched in the center along the fourth circle contour to form the tenth semi-finished product with an opening. S11: The tenth semi-finished product is continued to be punched downwards along the third circular contour to form a metal insert.

[0004] Furthermore, in S1, multiple positioning holes are distributed on the outside of the pre-punched holes.

[0005] Furthermore, S5 also includes: S51, which involves front-side stamping to thin the fourth semi-finished product, and S52, which involves back-side stamping to thin the fourth semi-finished product. The thickness within the second circular outline of the fifth semi-finished product is consistent with the thickness of the inner ring of the metal insert.

[0006] Furthermore, in S5, the distance between the relative sidewalls of the first and second punching grooves gradually decreases radially inward along the pre-punched hole.

[0007] Furthermore, in S7, the first tooth is located inside the first or second punch groove, and the opposite side walls of the first tooth are parallel to the radial direction of the pre-punched hole.

[0008] Furthermore, the inner diameter of the third circular profile is consistent with the outer diameter of the metal insert, and the inner diameter of the fourth circular profile is consistent with the inner diameter of the metal insert.

[0009] Furthermore, the first circular contour, the third circular contour, the second circular contour, the fourth circular contour, and the pre-punched hole are all concentrically arranged, with the inner diameter of the first circular contour > the inner diameter of the third circular contour > the inner diameter of the second circular contour > the inner diameter of the fourth circular contour > the inner diameter of the pre-punched hole.

[0010] The beneficial effects of this invention are as follows: This invention relates to a metal insert processing technology for composite gaskets in new energy thermal management systems. During the metal insert forming process, the semi-finished product is stamped sequentially through a first and second grooving process to open the flared section. The flatness of the fifth semi-finished product is ensured by the front and back side thinning treatment of the fourth semi-finished product. The flatness of the upper and lower surfaces of the metal insert is ensured by the process of semi-cutting, three-stage leveling, and full cutting. Finally, the stamping forming of the metal insert for composite gaskets is realized. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a schematic diagram of the metal insert structure; Figure 2 It is a plan view of the metal insert; Figure 3 This is a schematic diagram of the material strip structure; Figure 4 This is a schematic diagram of the structure of the first semi-finished product on the conveyor belt; Figure 5 This is a schematic diagram of the structure of the second semi-finished product on the conveyor belt; Figure 6 This is a schematic diagram of the third semi-finished product structure on the material strip; Figure 7 This is a schematic diagram of the fourth semi-finished product structure on the conveyor belt; Figure 8 This is a schematic diagram of the fifth semi-finished product structure on the material conveyor belt; Figure 9 This is a schematic diagram of the structure where the lower surface of the fifth semi-finished product on the material strip becomes thinner; Figure 10 This is a schematic diagram of the structure where the upper surface of the fifth semi-finished product on the conveyor belt becomes thinner; Figure 11 This is a schematic diagram of the sixth semi-finished product structure on the material strip; Figure 12 This is a schematic diagram of the seventh semi-finished product structure on the material conveyor belt; Figure 13 This is a schematic diagram of the eighth semi-finished product structure on the material conveyor belt; Figure 14 This is a side view of the eighth semi-finished product on the conveyor belt; Figure 15 This is a schematic diagram of the ninth semi-finished product structure on the material strip; Figure 16 This is a schematic diagram of the tenth semi-finished product structure on the material strip; Figure 17 This is a schematic diagram of the structure of the metal insert on the strip; Figure 18 This is a side view of the metal inserts being dropped from the strip; In the diagram: 01-metal insert, 011-outer ring, 012-inner ring, 013-stepped structure, 014-center hole, 015-groove, 015a-equal diameter section, 015b-flared section, 016-opening; 100-material strip; 1-First semi-finished product, 11-Pre-punched hole, 12-Positioning hole; 2-Second semi-finished product; 21-First circular outline; 3-Third semi-finished product, 31-First groove; 4-Fourth semi-finished product, 41-Second punching groove; 5-Fifth semi-finished product, 51-Second circular outline, 52-Thin sheet; 6 - The sixth semi-finished product; 7 - Seventh semi-finished product; 71 - First tooth; 8 - Eighth semi-finished product; 81 - Third circular outline; 9 - Ninth semi-finished product; 10 - Tenth semi-finished product, 101 - Fourth circular outline. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0014] See Figure 1 , Figure 2 The diagram shows the structure of the metal insert 01. It includes an outer ring 011 and an inner ring 012 disposed inside the outer ring 011. The thickness of the inner ring 012 is less than that of the outer ring 011, thus forming a stepped structure 013 at the junction of the inner ring 012 and the outer ring 011. Twelve grooves 015 are provided around the central hole 014 of the metal insert 01. The outer part of each groove 015 is opened at the outer ring 011, and the inner part is opened at the inner ring 012. The opening 016 at the inner end of the groove 015 is connected to the central hole 014 and extends radially outward along the central hole 014. Each groove 015 is distributed as a constant diameter section 015a and a flared section 015b.

[0015] The maximum distance between the end of the groove 015 away from the center hole 014 is 1.6mm, and the minimum distance between the end of the groove 015 near the center hole 014 is 0.2mm. Because the inner ring 012 is relatively thin, if multiple grooves 015 are stamped and then discharged in one go, the surface of the formed metal insert 01 will be uneven.

[0016] Therefore, this embodiment discloses a metal insert processing technology for composite gaskets in a new energy thermal management system. (See also...) Figure 3 The metal insert 01 is formed by distributed stamping using a progressive die, specifically including the following steps: See Figure 4 S1: Punch holes in the strip 100 to form a first semi-finished product 1 with pre-punched holes 11 and positioning holes 12; In this step, the positioning hole 12 is used to position the strip 100 during the subsequent stamping process; the pre-punching hole 11 is used to facilitate the flow of metal from the strip to the pre-punching hole, avoiding outward expansion that could lead to inaccurate positioning during subsequent stamping.

[0017] See Figure 5 S2: The first semi-finished product 1 is leveled along the first circular contour 21 to form the second semi-finished product 2, wherein the thickness inside the first circular contour 21 is consistent with the thickness of the outer ring 011 of the metal insert 01. In this step, the inner area of ​​the first circular outline 21 of the first semi-finished product 1 is leveled once. The purpose of leveling once is to ensure the flatness of the inner area of ​​the first circular outline 21 and to thin the area of ​​the first circular outline 21 so that the thickness of the inner area of ​​the first circular outline 21 is consistent with the thickness of the outer ring 011 of the metal insert 01. Specifically, the thickness of the strip 100 is 1.3mm. After S2, the thickness of the inner area of ​​the first circular outline 21 is thinned to 1.27mm. 1.27mm is also the thickness of the outer ring 011 of the metal insert 01.

[0018] See Figure 6 S3: The area of ​​the second semi-finished product 2 between the first circular contour 21 and the pre-punched hole 11 is grooved once to form the third semi-finished product 3. The third semi-finished product 3 has a plurality of first grooves 31 that are equally spaced around the center of the pre-punched hole 11. In this step, the area within the first circular outline 21 of the second semi-finished product 2 is grooved once to form 6 first grooves 31, and the first grooves 31 are equally spaced within the first circular outline 21. See Figure 7 S4: The third semi-finished product 3 is punched a second time to form the fourth semi-finished product 4. A second punch 41 with the same structure as the first punch 31 is formed between two adjacent first punch 31 of the fourth semi-finished product 4. In this step, the area within the first circular outline 21 of the third semi-finished product 3 is punched a second time to form six second punches 41. Each second punch 41 is located between two adjacent first punches 31, so that 12 punches are formed at equal intervals on the fourth semi-finished product 4. The arrangement of the punches is consistent with the arrangement of the grooves 015 in the metal insert 01. The punches have a gradually expanding structure from the inside to the outside. Because the spacing of the grooves 015 in the metal insert 01 is relatively close, the stamping of 6 grooves is carried out first through S3, and then the stamping of the remaining 6 grooves is carried out through S4. This ensures the stamping strength of the fourth semi-finished product 4. See Figure 8 S5: The center of the front and back sides of the fourth semi-finished product 4 is thinned by stamping along the second circular contour 51 to form the fifth semi-finished product 5. The inner parts of the first groove 31 and the second groove 41 are located within the second circular contour 51. In this embodiment, the area within the second circular contour 51 of the fourth semi-finished product 4 is thinned by stamping to form the fifth semi-finished product 5. The area within the second circular contour 51 forms a sheet 52. The metal of the strip 100 continues to flow toward the pre-punched hole 11. The thickness of the sheet 52 is consistent with the thickness of the inner ring 012 of the metal insert 01. The sheet 52 covers part of the punched groove (first punched groove 31, second punched groove 41), so that the inner part of the punched groove is opened on the sheet 52, and the outer part is opened on the strip 100 outside the second circular contour 51. See Figure 11 S6: The fifth semi-finished product 5 is leveled a second time to form the sixth semi-finished product 6; In this step, the upper and lower surfaces of the fifth semi-finished product 5 are leveled a second time to ensure flatness.

[0019] See Figure 12 S7: Punch teeth on the inner side of the first punch groove 31 and the second punch groove 41 located in the second circular contour 51 of the sixth semi-finished product 6 to form a seventh semi-finished product 7 with a first tooth 71, wherein the first punch groove 31 and the second punch groove 41 are connected to the corresponding first tooth 71 and form a groove 015. In this step, the inner ends of the punched grooves (first punched groove 31, second punched groove 41) are punched with teeth. There are 12 first teeth 71, and each first tooth 71 corresponds to a punched groove. The first teeth 71 are long strips of equal diameter. This step is used to form the inner ends of the groove 015 so that the spacing of the inner ends is adjusted to 0.2mm. See Figure 13 , Figure 14 S8: The portion of the seventh semi-finished product 7 within the third circular contour 81 is partially punched downwards to form the eighth semi-finished product 8 protruding from the bottom of the strip 100. In this step, the eighth semi-finished product 8 protrudes from the bottom of the strip 100 through a semi-punching process. If a full punching method with direct discharge is used, it will cause unevenness on the upper and lower surfaces of the eighth semi-finished product 8. See Figure 15 S9: The eighth semi-finished product 8 is leveled three times to form the ninth semi-finished product 9; In this step, the surface of the ninth semi-finished product is leveled three times to ensure its flatness.

[0020] See Figure 16 S10: The ninth semi-finished product 9 is punched in the center along the fourth circular outline 101 to form the tenth semi-finished product 10 with an opening 016. In this step, a hole is punched in the area of ​​the fourth circular contour 101. The area of ​​the fourth circular contour 101 partially overlaps with the first tooth 71. After punching, an opening 016 is formed at the end of the groove 015. The opening 016 allows the rubber part to be vulcanized into the groove 015. See Figure 17 , Figure 18 S11: The tenth semi-finished product 10 is continued to be punched downward along the third circular contour 81 to form a metal insert 01; In this step, the tenth semi-finished product 10 within the area of ​​the third circular contour 81 is fully punched to form the metal insert 01.

[0021] See Figure 4 In some possible steps, in S1, multiple positioning holes are distributed outside the pre-punched holes; In this step, a positioning hole 12 is also provided on the outside of the pre-punched hole 11. Preferably, there are two positioning holes 12, located at the upper left and lower left positions of the pre-punched hole 11, respectively.

[0022] See Figure 9 , Figure 10 In some possible steps, S5 may also include: S51, which involves reverse stamping to thin the fourth semi-finished product 4, and S52, which involves front stamping to thin the fourth semi-finished product 4; the thickness of the sheet 52 within the second circular contour 51 of the fifth semi-finished product 5 is the same as the thickness of the inner ring 012 of the metal insert 01. In this step, S5 is divided into S51 and S52. S51 is used to perform stamping thinning on the reverse side of the fourth semi-finished product 4, and S52 is used to perform stamping thinning on the front side of the fourth semi-finished product 4. In actual work, if the stamping thinning of the front and back sides of the fourth semi-finished product 4 is carried out simultaneously at the same station, the ideal state cannot be achieved due to the time difference of the progressive die itself. Therefore, it is necessary to perform thinning in stages.

[0023] See Figure 8 In some possible steps, in S5, the distance between the relative sidewalls of the first punch 31 and the second punch 41 gradually decreases radially inward along the pre-punched hole 11; In this step, the grooves (first groove 31, second groove 41) are formed by stamping and have a gradually expanding structure from the inside to the outside.

[0024] See Figure 12 In some possible steps, in S7, the first tooth 71 is located inside the first punch groove 31 or the second punch groove 41, and the opposite side walls of the first tooth 71 are arranged radially parallel to the pre-punched hole 11. In this step, the first tooth 71 is punched inside the punch groove, and the first tooth 71 is a long strip structure with equal diameter.

[0025] See Figure 5 , Figure 13 , Figure 8 , Figure 16 , Figure 4In some possible steps, the first circular profile 21, the third circular profile 81, the second circular profile 51, the fourth circular profile 101, and the pre-punched hole 11 are all concentrically arranged, and the inner diameter of the first circular profile 21 > the inner diameter of the third circular profile 81 > the inner diameter of the second circular profile 51 > the inner diameter of the fourth circular profile 101 > the inner diameter of the pre-punched hole 11. In this embodiment, the area within the first circular contour 21 is subjected to stamping and thinning treatment; the area within the third circular contour 81 is used for semi-cutting or blanking of the semi-finished product; the area within the second circular contour 51 is used to form the stepped structure 013 of the metal insert 01; the area within the fourth circular contour 101 is used for punching to form the central hole 014 of the metal insert 01, and to cut the groove 015 to form the opening 016; the area within the pre-punched hole 11 is for the flow of metal from the feed strip 100 to avoid the possibility of outward bulging.

[0026] In summary, during the forming of the metal insert 01, the semi-finished product is stamped sequentially through a first grooving and a second grooving to open the flared section 015b; the flatness of the fifth semi-finished product 5 is ensured by the front and back side thinning treatment of the fourth semi-finished product 4; and the flatness of the upper and lower surfaces of the metal insert 01 is ensured by the process of half cutting, three leveling and full cutting.

[0027] It should be noted that, see Figure 3 An empty workstation is set between two adjacent semi-finished products. The purpose of this workstation is to facilitate the transition and to allow for the addition of molds to achieve the addition of processes when the metal inserts are improved later.

[0028] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A metal insert machining process for a new energy thermal management system composite gasket, which utilizes a progressive die to sequentially punch a material strip (100) to form a metal insert (01), characterized in that, The method comprises the following steps: S1: punching the material belt (100) to form a first semi-finished product (1) with pre-punching (11), positioning hole (12); S2: once flattening the first semi-finished product (1) along the first circular contour (21) to form the second semi-finished product (2), wherein the thickness in the first circular contour (21) is consistent with the thickness of the outer ring (011) of the metal insert (01); S3: once slotting the second semi-finished product (2) between the first circular contour (21) and the pre-punching (11) to form the third semi-finished product (3), the third semi-finished product (3) has a plurality of first slots (31) formed around the center of the pre-punching (11) at equal intervals; S4: twice slotting the third semi-finished product (3) to form the fourth semi-finished product (4), the fourth semi-finished product (4) has a second slot (41) formed between the adjacent two first slots (31) and consistent with the structure of the first slot (31); S5: center thinning treatment of the fourth semi-finished product (4) along the second circular contour (51) to form the fifth semi-finished product (5), the inner side of the first slot (31) and the second slot (41) is located in the second circular contour (51); S6: twice flattening the fifth semi-finished product (5) to form the sixth semi-finished product (6); S7: punching the first slot (31) and the second slot (41) inside the sixth semi-finished product (6) located in the second circular contour (51) to form the seventh semi-finished product (7) with the first tooth (71), wherein the first slot (31) and the second slot (41) are arranged in communication with the corresponding first tooth (71) and form a groove (015); S8: downward half blanking of the seventh semi-finished product (7) along the part in the third circular contour (81) to form the eighth semi-finished product (8) protruding from the bottom of the material belt (100); S9: three times flattening the eighth semi-finished product (8) to form the ninth semi-finished product (9); S10: center punching treatment of the ninth semi-finished product (9) along the fourth circular contour (101) to form the tenth semi-finished product (10) with an opening (016); S11: downward stamping and blanking of the tenth semi-finished product (10) along the third circular contour (81) to form the metal insert (01).

2. The metal insert machining process for new energy thermal management system composite gasket according to claim 1, characterized in that, In S1, a plurality of positioning holes (12) are distributed outside the pre-punching (11).

3. The metal insert machining process for new energy thermal management system composite gasket according to claim 1, characterized in that, In S5, it further comprises S51 of front surface thinning of the fourth semi-finished product (4) and S52 of back surface thinning of the fourth semi-finished product (4); The thickness in the second circular contour (51) of the fifth semi-finished product (5) is consistent with the thickness of the inner ring (012) of the metal insert (01).

4. The metal insert machining process for new energy thermal management system composite gasket according to claim 1, characterized in that, In S5, the relative side wall spacing of the first slot (31) and the second slot (41) gradually decreases along the radial direction of the pre-punching (11).

5. The metal insert machining process for new energy thermal management system composite gasket according to claim 1, characterized in that, In S7, the first tooth (71) is located inside the first punch (31) or the second punch (41), and the opposite two side walls of the first tooth (71) are parallel along the radial direction of the pre-punch hole (11).

6. The metal insert machining process for new energy thermal management system composite gasket according to claim 1, characterized in that, The inner diameter of the third circular contour (81) is consistent with the outer diameter of the metal insert (01), and the inner diameter of the fourth circular contour (101) is consistent with the inner diameter of the metal insert (01).

7. The process for machining metal inserts for composite gaskets for new energy thermal management systems according to claim 1, characterized in that, The first circular contour (21), the third circular contour (81), the second circular contour (51), the fourth circular contour (101), and the pre-punch hole (11) are concentrically arranged, and the inner diameter of the first circular contour (21) is greater than the inner diameter of the third circular contour (81), which is greater than the inner diameter of the second circular contour (51), which is greater than the inner diameter of the fourth circular contour (101), which is greater than the inner diameter of the pre-punch hole (11).

Images