Spring grounding clamp body forming method

Abstract

The invention relates to a spring grounding clamp body forming method. Comprising the steps of S1, material cutting and punching, S2, pre-rolling, S3, rolling, S4, convex hull punching, S5, first forming, S6, second forming and S7, tinning, according to pre-rolling in the forming method, three-side positioning and rolling of clamp bodies of various specifications are achieved, positioning of three side faces of the clamp bodies of various specifications is also achieved, rolling operation of the spring grounding clamp bodies of various specifications can be comprehensively achieved, and the forming method has the advantages of being simple in structure, convenient to operate and high in practicability. The spring grounding clamp body edge rolling mold is simple in structure and high in universality, molds of various specifications do not need to be prepared, the mold amortization cost is saved, the situation that the space occupied by the molds of various specifications is large is avoided, and meanwhile the time for replacing the edge rolling mold when spring grounding clamp bodies of different specifications are produced is saved.

Description

Technical Field

[0001] This invention relates to the field of spring grounding technology, and in particular to a method for forming a spring grounding clip. Background Technology

[0002] Grounding clamps are used to conduct induced current from the feeder or shield wires of electrical equipment into the grounding network, preventing damage to the equipment caused by induced current generated by lightning strikes.

[0003] The existing grounding clip body manufacturing process mainly includes punching, edge trimming, side trimming, rounding, pre-forming, forming, and cutting. Traditionally, each process is carried out using separate machine tools. The disadvantages are: the overall equipment occupies a large area; the processes require operation between each step, increasing the transportation of semi-finished products and warehouse space; the labor intensity for workers is high; production efficiency is low; and manufacturing costs are high.

[0004] Patent CN 201310500230.X provides a spring grounding clip body mold. The mold includes an upper template and a lower template. Between the upper and lower templates, along the horizontal direction, are sequentially arranged a punching and trimming station, a trimming station, a pre-circling station, a circling station, a pre-forming punching station, a first idle step station, a second idle step station, a forming station, a third idle step station, and a cutting station. As the copper strip passes through, it sequentially completes the punching and trimming, trimming, pre-circling, circling, pre-forming punching, forming, and cutting processes, achieving high productivity. It can reduce the need for punch presses and floor space, and reduce the transportation and warehousing of semi-finished products.

[0005] However, the above-mentioned patent still has the following defects: the above-mentioned card body mold can only realize the pre-rolling and rolling processing of one type of spring grounding card body. The specifications of this type of spring grounding card body are different, so the width of the card body is the same but the length is different. The connecting hole specifications formed by rolling each specification of card body are consistent. When it is necessary to perform pre-rolling and rolling processing of multiple specifications of spring grounding card bodies, multiple specifications of molds need to be prepared, resulting in a large amortization cost of molds and a large space occupation of multiple specifications of molds. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a method for forming a spring grounding clip.

[0007] To solve the above technical problems, the technical solution of the present invention is as follows: a method for forming a spring grounding clip body, the innovation of which is that: the grounding clip body includes a clip body body, the clip body body is made of copper sheet, including a first arc segment, a first S-shaped segment, a straight segment, a second S-shaped segment, a second arc segment and a rolled segment connected in sequence, the rolled segment forming a connecting hole, and the first arc segment and the second arc segment are respectively arranged on the upper left side and the upper right side of the straight segment, and the opening sides of the first arc segment and the second arc segment are arranged facing each other, and the distance between them increases from top to bottom and then decreases. The rolled segment is arranged on the extension side of the second S-shaped segment and is outwardly flipped, and a circular hole is provided in the middle of one side of the straight segment; On the outer side of the first arc-shaped segment, there are sequentially arranged fan-shaped adjustment protrusions, N rectangular adjustment protrusions, and fan-shaped limiting protrusions. The arc-shaped surfaces of the fan-shaped adjustment protrusions and the fan-shaped limiting protrusions are all positioned away from the rectangular adjustment protrusions, while the fan-shaped limiting protrusions are positioned close to the straight segment. The gaps between the fan-shaped adjustment protrusions and the rectangular adjustment protrusions, between the rectangular adjustment protrusions and the fan-shaped limiting protrusions, and between two adjacent rectangular adjustment protrusions can all be precisely fitted into a grounding spring. A grounding spring is connected inside the connecting hole, and the feed line or shielding line is clamped by the cooperation of the grounding spring and the clamping body. The molding method specifically includes the following steps: S1: Cutting and punching: The copper strip is fed to the first stamping die. The first stamping die is used to simultaneously cut the copper strip and punch a round hole to obtain a convex first copper sheet. S2: Pre-rolling: The first copper sheet is set horizontally, and the narrower side is pre-rolled using a pre-rolling die to obtain the second copper sheet; S3: Rolling: The second copper sheet is set horizontally, and the narrower side is rolled using a rolling die to obtain the third copper sheet; S4: Stamping the third copper sheet by using the second stamping die to stamp the adjusting protrusion and limiting protrusion on it, thus obtaining the fourth copper sheet; S5: First forming: The fourth copper sheet is formed into the first arc segment and the second arc segment using the first forming mold to obtain the fifth copper sheet; S6: Second forming, the fifth copper sheet is bent and formed using the second forming mold, so that the first arc segment and the second arc segment are set facing each other to obtain the sixth copper sheet, and the straight segment formed after this bending is smaller than the shortest distance between the first arc segment and the second arc segment on the fifth copper sheet. S7: Tin plating, the surface of the sixth copper sheet is galvanized to obtain the finished grounding card body.

[0008] Furthermore, the vertical distance between the highest point of the pre-rolled circular side of the second copper sheet and the lowest horizontal point of the second copper sheet is 1.6 ± 0.2 cm; The inner diameter of the rolled side of the third copper sheet is Φ2.75±0.2cm.

[0009] Furthermore, the pre-rolled die includes a first upper template and a first lower template, and the pre-rolling of the connecting section on the card body is achieved by the cooperation of the first upper template and the first lower template. A first forming punch is installed on the first upper template; If one side of the first lower template is designated as the feeding side, a baffle plate is provided on the first lower template away from the feeding side, and the side of the baffle plate closer to the feeding side is designated as the pre-rolling side. The pre-rolling side includes an upper vertical surface, a middle horizontal step surface, and a bottom inner arc surface arranged sequentially from top to bottom. The middle horizontal step surface and the bottom inner arc surface are located outside the upper vertical surface. A lifting platform is provided on the first lower template between the feeding side and the pre-rolling side, close to the pre-rolling side. A feeding guide block is provided on the first lower template outside the lifting platform, and the feeding guide block is located on both sides of the width of the card body. A guide groove is provided between the inner side of the feeding guide block and the first lower template. The bottom end of the first forming punch is horizontally positioned, and a rounded chamfer is provided on the side of it near the baffle plate; The rolling mold includes a third upper template and a third lower template, and the rolling of the connecting section is achieved by the cooperation of the third upper template and the third lower template. The third upper template is provided with a second pressing block and a push plate. The bottom side of the second pressing block is provided with a limiting groove, including an upper concave arc surface and a lower vertical surface. The third lower template is also provided with positioning holes corresponding to the circular holes, and the third upper template is provided with positioning posts corresponding to the positioning holes; The third lower template is provided with a positioning block, and a movable forming block is provided inside the third lower template near the positioning block. The top of the movable forming block extends out of the third lower template, and the side of the top part away from the positioning block is a rolled side. The bottom of the rolled side is provided with a semi-circular groove. When the second pressing block is pressed down into place, the semi-circular groove is concentric with the arc surface. A forming groove is provided on the third lower template. The movable forming block is disposed in the forming groove. A connecting spring is disposed in the forming groove on the side of the movable forming block away from the positioning block. The two ends of the connecting spring are fixedly connected to the forming groove and the movable forming block, respectively. The movable molding block has a wedge-shaped inclined surface at one of its apex near the positioning block. The push plate is set vertically and its bottom is set with a wedge-shaped structure that matches the wedge-shaped inclined surface. The third lower template is also provided with edge limiting blocks on both sides of the movable molding block, and an accommodating groove is formed between the inner side of the edge limiting block and the third lower template to accommodate the horizontal placement of the card plate.

[0010] Furthermore, in S2, the first copper sheet is first placed on the lifting platform, while the pre-rolled round side of the first copper sheet abuts against the upper vertical surface and the two sides of the width of the first copper sheet are placed in the guide groove. Then the first upper template moves downward, the first forming punch presses down until the first copper sheet fits against the first lower template, and the lifting platform descends synchronously. The rounded chamfer of the baffle plate cooperates with the inner rounded surface of the bottom of the baffle plate to achieve the pre-rolling of the connecting section.

[0011] Furthermore, in step S3, the second copper sheet is horizontally placed on the second lower template with its circular hole aligned with the corresponding positioning hole on the second lower template, and the pre-rolled circular side of the second copper sheet is positioned facing the semi-circular groove. A positioning post of the corresponding specification is installed on the second upper template. Then, the second upper template moves downward. When the second pressure block presses the second copper sheet tightly onto the third lower template, the push plate is driven to continue moving downward. It cooperates with the movable forming block to move the movable forming block toward the second pressure block until the semi-circular groove and the arc surface are concentrically positioned, thus achieving the rolling.

[0012] Furthermore, the first stamping die is provided with a material cutting punch and a round hole punch.

[0013] The advantages of this invention are: Before pre-rolling in this forming method, the width of the clamp body is limited by the feeding guide block on the first lower template, and the three-sided positioning of the clamp body of various specifications is achieved with the help of the baffle plate. Before rolling, the three-sided positioning of the clamp body of various specifications is achieved by the cooperation of the two edge limiting blocks on the third lower template and the movable forming block. The third lower template is also provided with positioning holes corresponding to the round holes, and the third upper template is provided with positioning pins corresponding to the positioning holes. The cooperation between the positioning pins and the positioning holes prevents the clamp body from being misaligned during the rolling operation. It can be used to realize the rolling operation of spring grounding clamp bodies of various specifications. It has strong versatility, does not require the preparation of molds of various specifications, saves mold amortization costs, avoids the situation of large space occupation of molds of various specifications, and saves the time used to replace the rolling mold when producing spring grounding clamp bodies of different specifications.

[0014] 2. A positioning block is provided on the third lower template. A movable forming block is provided inside the third lower template near the positioning block. The top of the movable forming block extends out of the third lower template. The side of the top part away from the positioning block is the rolling side. The bottom of the rolling side is provided with a semi-circular groove. When the second pressing block is pressed down and fits the card body into place, the semi-circular groove is concentric with the arc surface, so that rolling can be achieved.

[0015] 3. The two ends of the connecting spring are fixedly connected to the forming groove and the movable forming block, respectively. When the rolling is finished and the push plate is completely separated from the lower template, the elasticity of the connecting spring can be used to push the movable forming block away from the clamp body, which facilitates the quick removal of material from the clamp body in the future. Attached Figure Description

[0016] Figure 1 This is a front view of the pre-rolled circular mold of the present invention.

[0017] Figure 2 This is a top view of a portion of the structure of the pre-rolled circular mold of the present invention.

[0018] Figure 3 This is an enlarged view of a portion of the structure of the pre-rolled circular mold of the present invention.

[0019] Figure 4 This is a front view of the rolling die of the present invention.

[0020] Figure 5 This is a diagram showing the mold assembly of the rolling die of the present invention.

[0021] Figure 6 This is a top view of the main structure of the rolling die of the present invention.

[0022] Figure 7 This is a diagram illustrating the evolution of the copper sheet structure of the present invention. Detailed Implementation

[0023] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0024] An innovative method for forming a spring grounding clip body is as follows: the grounding clip body includes a clip body body made of copper sheet, comprising a first arc-shaped segment, a first S-shaped segment, a straight segment, a second S-shaped segment, a second arc-shaped segment, and a rolled circular segment connected in sequence. The rolled circular segment forms a connecting hole. The first arc-shaped segment and the second arc-shaped segment are respectively located on the upper left and upper right sides of the straight segment, and the opening sides of the first arc-shaped segment and the second arc-shaped segment face each other. The distance between them increases from top to bottom and then decreases. The rolled circular segment is located on the extension side of the second S-shaped segment and is outwardly flipped. A circular hole is provided in the middle of one side of the straight segment.

[0025] On the outer side of the first arc-shaped segment, there are sequentially arranged fan-shaped adjustment protrusions, N rectangular adjustment protrusions, and fan-shaped limiting protrusions. The arc-shaped surfaces of the fan-shaped adjustment protrusions and the fan-shaped limiting protrusions are all positioned away from the rectangular adjustment protrusions, while the fan-shaped limiting protrusions are positioned close to the straight segment. The gaps between the fan-shaped adjustment protrusions and the rectangular adjustment protrusions, between the rectangular adjustment protrusions and the fan-shaped limiting protrusions, and between two adjacent rectangular adjustment protrusions can all be precisely fitted into a grounding spring. A grounding spring is connected inside the connecting hole, and the feed line or shielding line is clamped by the cooperation of the grounding spring and the clamping body. The molding method specifically includes the following steps, such as Figure 7 As shown: S1: Cutting and punching: The copper strip is fed to the first stamping die. The first stamping die is used to simultaneously cut the copper strip and punch a round hole to obtain a convex first copper sheet T1.

[0026] The first stamping die is equipped with a material cutting punch and a punch for punching round holes.

[0027] S2: Pre-rolling: The first copper sheet T1 is set horizontally, and the narrower side is pre-rolled using a pre-rolling mold to obtain the second copper sheet T2. Specifically, the first copper sheet T1 is first placed on the lifting platform, with the pre-rolled side of the first copper sheet T1 abutting against the upper vertical surface, and the two sides of the width of the first copper sheet T1 placed in the guide groove.

[0028] Then the first upper template moves downward, the first forming punch presses down until the first copper sheet T1 fits against the first lower template, and the lifting platform descends synchronously. The rounded chamfer of the baffle plate cooperates with the inner rounded surface of the bottom of the baffle plate to achieve the pre-rolling of the connecting section.

[0029] The vertical distance between the highest point of the pre-wound circular side of the second copper sheet T2 and the lowest horizontal point of the second copper sheet T2 is 1.6 ± 0.2 cm.

[0030] S3: Rolling: The second copper sheet T2 is set horizontally, and the narrower side is rolled using a rolling die to obtain the third copper sheet T3.

[0031] Specifically, the second copper sheet T2 is placed horizontally on the second lower template with its circular hole aligned with the corresponding positioning hole on the second lower template, and the pre-rolled circular side of the second copper sheet T2 is positioned facing the semi-circular groove. A positioning post of the corresponding specification is installed on the second upper template. Then, the second upper template moves downward. When the second pressure block presses the second copper sheet T2 tightly onto the third lower template, the push plate is driven to continue moving downward. It cooperates with the movable forming block to move the movable forming block toward the second pressure block until the semi-circular groove and the arc surface are concentric, thus achieving the rolling.

[0032] The inner diameter of the rolled side of the third copper sheet T3 is Φ2.75±0.2cm.

[0033] S4: Stamping the embossed part, the third copper sheet T3 is stamped with the adjustment protrusion and the limiting protrusion using the second stamping die to obtain the fourth copper sheet T4.

[0034] S5: First forming: The fourth copper sheet T4 is formed into the first arc segment and the second arc segment using the first forming mold to obtain the fifth copper sheet T5.

[0035] S6: Second forming, the fifth copper sheet T5 is bent and formed using the second forming mold, so that the first arc segment and the second arc segment are set facing each other, to obtain the sixth copper sheet T6, and the straight segment formed after this bending is smaller than the shortest distance between the first arc segment and the second arc segment on the fifth copper sheet T5.

[0036] S7: Tin plating. The surface of the sixth copper sheet T6 is galvanized to obtain the finished grounding card body.

[0037] Pre-rolled round molds, such as Figure 1-3 As shown, it includes a first upper template 1 and a first lower template 2. The first upper template 1 and the first lower template 2 work together to achieve the pre-rolling of the connecting section on the card body.

[0038] The first forming punch 11 and the first guide sleeve 12 are installed on the first upper template 1.

[0039] If a first guide post 24 corresponding to the first guide sleeve 12 is provided on the first lower template 2, and one side of the guide post is the feeding side, then a baffle plate 21 is provided on the first lower template 2 away from the feeding side.

[0040] The side of the baffle plate 21 closest to the feed side is the pre-rolling side. The pre-rolling side includes an upper vertical surface 211, a middle horizontal step surface 212 and a bottom inner arc surface 213 arranged sequentially from top to bottom. The middle horizontal step surface 212 and the bottom inner arc surface 213 are located on the outside of the upper vertical surface 211.

[0041] A lifting groove is provided on the first lower template 2, located between the feeding side and the pre-coiling side, near the pre-coiling side. A lifting platform 23 is provided in the lifting groove, and a base plate is provided below the lifting platform 23. The lifting platform 23 and the base plate are elastically connected by a spring. A feeding guide block 22 is provided on the first lower template 2 outside the lifting platform 23, and the feeding guide block 22 is located on both sides of the width of the clamping body. A guide groove is provided on the inner side of the feeding guide block 22 and the first lower template 2 respectively.

[0042] The bottom end of the first forming punch 11 is set horizontally, and one corner of it near the pre-rolling side of the baffle plate 21 is set as a rounded chamfer.

[0043] Rolling molds, such as Figure 4-6As shown, it includes a third upper template 3 and a third lower template 4, and the connecting section is rolled into shape by the cooperation of the third upper template 3 and the third lower template 4.

[0044] The third upper template 3 is provided with a second guide post 34, a second pressure block 31 and a push plate 32. The bottom of the second pressure block 31 is provided with a limiting groove near the side of the positioning block 41, including an upper concave arc surface 33 and a lower vertical surface. The lower vertical surface can facilitate subsequent demolding.

[0045] A positioning block 41 is provided on the third lower template 4. A movable forming block 42 is provided inside the third lower template 4 near the positioning block 41. The top of the movable forming block 42 extends out of the third lower template 4. The side of the top part away from the positioning block 41 is the rolling side. The bottom of the rolling side is provided with a semi-circular groove. When the second pressing block 31 presses down and fits the card body into place, the semi-circular groove and the arc surface 33 are concentrically set, so they can cooperate to achieve rolling.

[0046] A forming groove 43 is provided on the third lower template 4. A movable forming block 42 is set in the forming groove 43. A connecting spring is set in the forming groove 43 on the side of the movable forming block 42 away from the positioning block 41. The two ends of the connecting spring are fixedly connected to the forming groove 43 and the movable forming block 42 respectively.

[0047] Once the rolling process is complete and the pusher plate 32 is completely detached from the lower template, the movable forming block 42 can be pushed away from the clamping body using the elasticity of the connecting spring, facilitating rapid material removal from the clamping body later.

[0048] The movable molding block 42 has a wedge-shaped inclined surface at one of its apex near the positioning block 41. The push plate 32 is set vertically, and its bottom is set as a wedge-shaped structure that matches the wedge-shaped inclined surface.

[0049] The top of the push plate 32 is connected to a drive cylinder, which drives the push plate 32 to move vertically up and down.

[0050] Edge limiting blocks 44 are also provided on both sides of the movable forming block 42 on the third lower template 4. An accommodating groove for horizontally placed accommodating plates is formed between the inner side of the edge limiting block 44 and the third lower template 4, and the copper sheet is limited through the accommodating groove.

[0051] The third lower template 4 is also provided with positioning holes 24 corresponding to the round holes, and the third upper template 3 is provided with mounting holes in various positions for installing positioning columns of different specifications that correspond to the positioning holes.

[0052] Before pre-rolling in this forming method, the width of the clamp body is limited by the feeding guide block on the first lower template, and the three-sided positioning of the clamp body of various specifications is achieved with the help of the baffle plate. Before rolling, the three-sided positioning of the clamp body of various specifications is achieved by the cooperation of the two edge limiting blocks on the third lower template and the movable forming block. The third lower template is also provided with positioning holes corresponding to the round holes, and the third upper template is provided with positioning pins corresponding to the positioning holes. The cooperation between the positioning pins and the positioning holes prevents the clamp body from being misaligned during the rolling operation. It can be used to realize the rolling operation of spring grounding clamp bodies of various specifications. It has strong versatility, does not require the preparation of molds of various specifications, saves mold amortization costs, avoids the situation of large space occupation of molds of various specifications, and saves the time used to replace the rolling mold when producing spring grounding clamp bodies of different specifications.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A method for forming a spring grounding clip body, characterized in that: The grounding clip includes a clip body made of copper sheet, comprising a first arc segment, a first S-shaped segment, a straight segment, a second S-shaped segment, a second arc segment, and a rolled segment connected in sequence. The rolled segment forms a connecting hole. The first arc segment and the second arc segment are respectively located on the upper left and upper right sides of the straight segment. The opening sides of the first arc segment and the second arc segment face each other, and the distance between them increases from top to bottom and then decreases. The rolled segment is located on the extension side of the second S-shaped segment and is outwardly flipped. A circular hole is provided in the middle of one side of the straight segment. On the outer side of the first arc-shaped segment, there are sequentially arranged fan-shaped adjustment protrusions, N rectangular adjustment protrusions, and fan-shaped limiting protrusions. The arc-shaped surfaces of the fan-shaped adjustment protrusions and the fan-shaped limiting protrusions are all positioned away from the rectangular adjustment protrusions, while the fan-shaped limiting protrusions are positioned close to the straight segment. The gaps between the fan-shaped adjustment protrusions and the rectangular adjustment protrusions, between the rectangular adjustment protrusions and the fan-shaped limiting protrusions, and between two adjacent rectangular adjustment protrusions can all be precisely fitted into a grounding spring. A grounding spring is connected inside the connecting hole, and the feed line or shielding line is clamped by the cooperation of the grounding spring and the clamping body. The molding method specifically includes the following steps: S1: Cutting and punching: The copper strip is fed to the first stamping die. The first stamping die is used to simultaneously cut the copper strip and punch a round hole to obtain a convex first copper sheet. S2: Pre-rolling: The first copper sheet is set horizontally, and the narrower side is pre-rolled using a pre-rolling die to obtain the second copper sheet; S3: Rolling: The second copper sheet is set horizontally, and the narrower side is rolled using a rolling die to obtain the third copper sheet; S4: Stamping the third copper sheet by using the second stamping die to stamp the adjusting protrusion and limiting protrusion on it, thus obtaining the fourth copper sheet; S5: First forming: The fourth copper sheet is formed into the first arc segment and the second arc segment using the first forming mold to obtain the fifth copper sheet; S6: Second forming, the fifth copper sheet is bent and formed using the second forming mold, so that the first arc segment and the second arc segment are set facing each other to obtain the sixth copper sheet, and the straight segment formed after this bending is smaller than the shortest distance between the first arc segment and the second arc segment on the fifth copper sheet. S7: Tin plating, the surface of the sixth copper sheet is galvanized to obtain the finished grounding card body.

2. The spring grounding clip body forming method according to claim 1, characterized in that: The vertical distance between the highest point of the pre-wound circular side of the second copper sheet and the lowest horizontal point of the second copper sheet is 1.6 ± 0.2 cm; The inner diameter of the rolled side of the third copper sheet is Φ2.75±0.2cm.

3. The spring grounding clip body forming method according to claim 1, characterized in that: The pre-rolled round mold includes a first upper template and a first lower template, and the pre-rolling of the connecting section on the card body is achieved by the cooperation of the first upper template and the first lower template. A first forming punch is installed on the first upper template; If one side of the first lower template is designated as the feeding side, a baffle plate is provided on the first lower template away from the feeding side, and the side of the baffle plate closer to the feeding side is designated as the pre-rolling side. The pre-rolling side includes an upper vertical surface, a middle horizontal step surface, and a bottom inner arc surface arranged sequentially from top to bottom. The middle horizontal step surface and the bottom inner arc surface are located outside the upper vertical surface. A lifting platform is provided on the first lower template between the feeding side and the pre-rolling side, close to the pre-rolling side. A feeding guide block is provided on the first lower template outside the lifting platform, and the feeding guide block is located on both sides of the width of the card body. A guide groove is provided between the inner side of the feeding guide block and the first lower template. The bottom end of the first forming punch is horizontally positioned, and a rounded chamfer is provided on the side of it near the baffle plate; The rolling mold includes a third upper template and a third lower template, and the rolling of the connecting section is achieved by the cooperation of the third upper template and the third lower template. The third upper template is provided with a second pressing block and a push plate. The bottom side of the second pressing block is provided with a limiting groove, including an upper concave arc surface and a lower vertical surface. The third lower template is also provided with positioning holes corresponding to the circular holes, and the third upper template is provided with positioning posts corresponding to the positioning holes; The third lower template is provided with a positioning block, and a movable forming block is provided inside the third lower template near the positioning block. The top of the movable forming block extends out of the third lower template, and the side of the top part away from the positioning block is a rolled side. The bottom of the rolled side is provided with a semi-circular groove. When the second pressing block is pressed down into place, the semi-circular groove is concentric with the arc surface. A forming groove is provided on the third lower template. The movable forming block is disposed in the forming groove. A connecting spring is disposed in the forming groove on the side of the movable forming block away from the positioning block. The two ends of the connecting spring are fixedly connected to the forming groove and the movable forming block, respectively. The movable molding block has a wedge-shaped inclined surface at one of its apex near the positioning block. The push plate is set vertically and its bottom is set with a wedge-shaped structure that matches the wedge-shaped inclined surface. The third lower template is also provided with edge limiting blocks on both sides of the movable molding block, and an accommodating groove is formed between the inner side of the edge limiting block and the third lower template to accommodate the horizontal placement of the card plate.

4. The spring grounding clip body forming method according to claim 3, characterized in that: In step S2, the first copper sheet is first placed on the lifting platform, and at the same time, the pre-rolled round side of the first copper sheet abuts against the upper vertical surface, and the two sides of the width of the first copper sheet are placed in the guide groove. Then the first upper template moves downward, the first forming punch presses down until the first copper sheet fits against the first lower template, and the lifting platform descends synchronously. The rounded chamfer of the baffle plate cooperates with the inner rounded surface of the bottom of the baffle plate to achieve the pre-rolling of the connecting section.

5. The spring grounding clip body forming method according to claim 3, characterized in that: In step S3, the second copper sheet is horizontally placed on the second lower template with its circular hole aligned with the corresponding positioning hole on the second lower template, and the pre-rolled circular side of the second copper sheet is positioned facing the semi-circular groove. A positioning post of the corresponding specification is installed on the second upper template. Then, the second upper template moves downward. When the second pressure block presses the second copper sheet tightly onto the third lower template, the push plate is driven to continue moving downward. It cooperates with the movable forming block to move the movable forming block toward the second pressure block until the semi-circular groove and the arc surface are concentrically positioned, thus achieving the rolling.

6. The method for forming a spring grounding clip body according to claim 1, characterized in that: The first stamping die is provided with a material cutting punch and a punch for punching round holes.

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