Machining die for clamp body of spring grounding clamp

Abstract

The utility model relates to a clamp body machining die for a spring grounding clamp. Comprising a pre-rolling die and a rolling die; before a card body is pre-rolled, the width of the card body is limited on the first lower die plate through the feeding guide block, and three-side positioning of the card bodies of various specifications is achieved through the cooperation of the feeding guide block and the striker plate; two edge limiting blocks on the third lower die plate are matched with the movable forming block to achieve positioning of three side faces of the clamping bodies of various specifications, positioning holes corresponding to the round holes are further formed in the third lower die plate, positioning columns corresponding to the positioning holes are arranged on the third upper die plate, the positioning columns are matched with the positioning holes, and therefore the clamping bodies of various specifications can be formed. The clamp body is prevented from being dislocated in the edge rolling operation process, the clamp body edge rolling device can be comprehensively used for achieving edge rolling operation of clamp bodies of various specifications, universality is high, dies of various specifications do not need to be prepared, die amortization cost is saved, and the situation that the dies of various specifications are large in occupied space is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of spring grounding cards, in particular to a card body processing die for a spring grounding card. Background Art

[0002] Grounding clamps are used to direct induced electricity from the feeder or shielding wires of electrical equipment into the grounding network, preventing damage to the equipment caused by induced electricity from lightning strikes. Existing non-glue-free grounding clamps primarily include V-type and spring-type clamps. The spring-type clamps primarily consist of a clamp body, a retaining spring, and a grounding wire connected to the clamp body. The clamp body is a one-piece structure made of copper sheet, including a clamp body with an extended connecting section at one end. This section is rounded to form a connecting hole, into which the retaining spring is connected. The clamp body also has a circular hole. The clamp body and retaining spring work together to clamp the feeder or shielding wire.

[0003] Existing patent CN201310500230.X provides a spring grounding card body mold, which uses copper strips to make the card body. The mold features an upper mold plate and a lower mold plate, with a punching and trimming station, a trimming station, a pre-rounding station, a rounding station, a pre-forming and embossing station, a first idle step station, a second idle step station, a forming station, a third idle step station, and a cutting station arranged horizontally between the upper and lower mold plates. As the copper strip passes through, the punching and trimming, trimming, pre-rounding, rounding, pre-forming and embossing, forming station, and cutting processes are sequentially completed, resulting in high productivity. This reduces the need for punching machines, site space, and the transportation and warehouse space required for semi-finished products. However, the above patent has the following defects: the above-mentioned card body mold can only realize the pre-curling and curling processing of the card body of one spring grounding card. The specifications of the card body of this spring grounding card are different, and the width of the card body is the same but the length is different. When it is necessary to pre-curl and curl the card body of spring grounding cards of various specifications, it is necessary to prepare molds of various specifications, resulting in large mold depreciation costs and a situation where molds of various specifications occupy a large amount of space. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a spring grounding card body processing die.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a spring grounding card body processing mold, the innovation of which is: comprising a pre-rolling mold and a rolling mold;

[0006] The pre-curling mold includes a first upper template and a first lower template, and the pre-curling of the connecting section on the card body is achieved through the cooperation of the first upper template and the first lower template;

[0007] A first forming punch is installed on the first upper template;

[0008] Assuming that one side of the first lower template is 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 close to the feeding side is the pre-rolling side, the pre-rolling side includes an upper vertical surface, a middle horizontal step surface and a bottom inner circular arc surface arranged in sequence from top to bottom, and the middle horizontal step surface and the bottom inner circular arc surface are arranged on the outside of the upper vertical surface, a lifting platform is provided on the first lower template between the feeding side and the pre-rolling side and close to the pre-rolling side, a feeding guide block is provided on the first lower template at the outside of the lifting platform, and the feeding guide blocks are on both sides of the width of the card body, and a guide groove is correspondingly provided between the inner side of the feeding guide block and the first lower template;

[0009] The rolling mold includes a third upper template and a third lower template, and the third upper template cooperates with the third lower template to realize the rolling forming of the connecting section;

[0010] The bottom end of the first forming punch is arranged horizontally, and a side thereof close to the baffle plate is provided with an arc chamfer;

[0011] The third upper mold plate 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, which includes an upper concave arc surface and a lower vertical surface.

[0012] The third lower template is provided with a positioning hole corresponding to the circular hole, and the third upper template is provided with a positioning column corresponding to the positioning hole.

[0013] Furthermore, a positioning block is provided on the third lower template, 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 the curling side. A semicircular groove is provided at the bottom of the curling side. When the second pressing block is pressed down into place, the semicircular groove is concentrically arranged with the arc surface, and they can cooperate to achieve curling.

[0014] Furthermore, a forming groove is provided on the third lower template, the movable forming block is arranged in the forming groove, a connecting spring is arranged in the forming groove on the side of the movable forming block away from the positioning block, and the two ends of the connecting spring are respectively fixedly connected to the forming groove and the movable forming block.

[0015] Furthermore, a wedge-shaped inclined surface is provided at a top corner of the movable forming block close to the positioning block, the push plate is vertically arranged, and its bottom is provided with a wedge-shaped structure matching the wedge-shaped inclined surface.

[0016] Furthermore, the third lower template is provided with edge limiting blocks on both sides of the movable forming block, and an accommodating groove for accommodating a horizontally placed copper sheet is formed between the inner side of the edge limiting blocks and the third lower template.

[0017] The advantages of the present invention are:

[0018] 1. Before pre-rolling the card body, the feed guide block is used on the first lower template to limit the width of the card body, and the baffle plate is used to realize the three-side positioning of the card body of various specifications. Before rolling, the two edge limit blocks on the third lower template are used in conjunction with the movable forming block to realize the three-side positioning of the card body of various specifications, and the third lower template is also provided with a positioning hole corresponding to the circular hole, and the third upper template is provided with a positioning column corresponding to the positioning hole. The cooperation between the positioning column and the positioning hole avoids the misalignment of the card body during the rolling operation. It can be used to realize the rolling operation of card bodies of various specifications. It has strong versatility and does not need to prepare molds of various specifications, saving mold amortization costs and avoiding the situation where molds of various specifications occupy a large amount of space.

[0019] 2. A positioning block is provided on the third lower template, 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 portion away from the positioning block is the curling side. The bottom of the curling side is provided with a semicircular groove. When the second pressing block is pressed down to fit the card body into place, the semicircular groove and the arc surface are concentrically arranged to cooperate to achieve curling. 3. The two ends of the connecting spring are fixedly connected to the forming groove and the movable forming block respectively. When curling is completed 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 card body, facilitating the subsequent rapid removal of the card body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of a pre-rolling die for a spring grounding card body processing die of the utility model.

[0021] Figure 2 It is a partial structural top view of a pre-rolling die of a spring grounding card body processing die of the utility model.

[0022] Figure 3 This is an enlarged view of the partial structure of a pre-rolling mold of a spring grounding card body processing mold of the utility model.

[0023] Figure 4 This is a front view of a rolling mold for a spring grounding card body processing mold of the utility model.

[0024] Figure 5 This is a closing diagram of a rolling mold for a spring grounding card body processing mold of the utility model. Figure 6 This is a partial structural top view of a rolling mold main body of a spring grounding card body processing mold of the utility model. DETAILED DESCRIPTION

[0025] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0026] like Figure 1-6 The spring grounding card body processing mold shown includes a pre-rolling mold and a rolling mold.

[0027] Pre-rolled round molds such as Figure 1-3 As shown, it includes a first upper template 1 and a first lower template 2, and the pre-curling of the connecting section on the card body is achieved through the cooperation of the first upper template 1 and the first lower template 2.

[0028] A first forming punch 11 and a first guide sleeve 12 are mounted on the first upper die plate 1 .

[0029] Assuming that the first lower template 2 is provided with a first guide column 24 corresponding to the first guide sleeve 12 , one side of which is the feed side, a baffle plate 21 is provided on the first lower template 2 away from the feed side.

[0030] The side of the baffle plate 21 close to the feed side is the pre-roll side, which includes an upper vertical surface 211, a middle horizontal step surface 212 and a bottom inner arc surface 213 arranged in sequence from top to bottom, and the middle horizontal step surface 212 and the bottom inner arc surface 213 are arranged on the outside of the upper vertical surface 211.

[0031] A lifting groove is provided on the first lower template 2 between the feed side and the pre-roll side, near the pre-roll side. A lifting platform 23 is provided in the lifting groove, and a bottom plate is provided under the lifting platform 23. The lifting platform 23 and the bottom plate are elastically connected by a spring. A feed guide block 22 is provided on the outside of the lifting platform 23 on the first lower template 2, and the feed guide block 22 is located on both sides of the width of the card body. A guide groove is correspondingly provided between the inner side of the feed guide block 22 and the first lower template 2.

[0032] The bottom end of the first forming punch 11 is arranged horizontally, and a corner thereof close to the baffle plate 21 and close to the pre-rolling side is set as an arc chamfer.

[0033] Rolling mold Figure 4-6 As shown, it includes a third upper template 3 and a third lower template 4, and the third upper template 3 and the third lower template 4 cooperate to realize the rolling forming of the connecting section.

[0034] The third upper mold plate 3 is provided with a second guide column 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 demoulding.

[0035] A positioning block 41 is provided on the third lower template 4, and 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, and the side of the top part away from the positioning block 41 is the curling side. A semicircular groove is provided at the bottom of the curling side. When the second pressing block 31 is pressed down to fit the card body into place, the semicircular groove is concentrically arranged with the arc surface 33, which can cooperate to achieve curling.

[0036] A forming groove 43 is provided on the third lower template 4, and a movable forming block 42 is arranged in the forming groove 43. A connecting spring is arranged in the forming groove 43 and is located on the side of the movable forming block 42 away from the positioning block 41, and the two ends of the connecting spring are fixedly connected to the forming groove 43 and the movable forming block 42 respectively.

[0037] When the rolling is completed and the push plate 32 is completely separated from the lower template, the elasticity of the connecting spring can be used to push the movable forming block 42 away from the card body, so as to facilitate the subsequent rapid removal of the card body.

[0038] A wedge-shaped inclined surface is provided at a top corner of the movable forming block 42 close to the positioning block 41 . The push plate 32 is vertically arranged, and its bottom is provided with a wedge-shaped structure matching the wedge-shaped inclined surface.

[0039] The top of the push plate 32 is connected to a driving cylinder, and the driving cylinder drives the push plate 32 to move vertically up and down.

[0040] The third lower template 4 is further provided with edge limiting blocks 44 on both sides of the movable forming block 42. A receiving groove for accommodating a horizontally placed copper sheet is formed between the inner side of the edge limiting block 44 and the third lower template 4, and the copper sheet is limited by the receiving groove.

[0041] The third lower template 4 is further provided with positioning holes 24 corresponding to the circular holes, and the third upper template 3 is provided with mounting holes at various positions for mounting positioning columns of different specifications corresponding to the positioning holes.

[0042] Working principle of this patent:

[0043] In the initial state, the top surface of the lifting platform 23 is not lower than the middle horizontal step surface 212. The copper sheet 6 with round holes punched and cut is placed on the lifting platform 23. At the same time, the connecting section on the length side of the copper sheet 6 is against the upper vertical surface 211, and the width sides of the copper sheet 6 are placed in the guide groove.

[0044] When pre-curling the copper sheet 6, the first upper template descends, the first forming punch 11 presses down until the copper sheet 6 fits the first lower template 2, and the lifting platform 23 descends synchronously. The arc chamfer of the baffle plate 21 cooperates with the bottom inner arc surface 213 of the baffle plate 21 to realize the pre-curling of the connecting section.

[0045] Then, the circular hole of the pre-rolled copper sheet 6 is aligned with the positioning hole 24 of corresponding specifications on the second lower template and placed horizontally on the second lower template, and the connecting section of the copper sheet 6 is set toward the semicircular groove, and a positioning column of corresponding specifications is installed on the second upper template 3. Then the second upper template 3 moves downward, and when the second pressing block 31 presses the copper sheet tightly on the third lower template, the push plate 32 is driven by the driving cylinder to continue to move downward, and cooperates with the movable forming block 42 to realize the movement of the movable forming block 42 toward the second pressing block 31 until the semicircular groove is concentric with the arc surface 33, and the rolling is achieved.

[0046] This structure can be used to achieve the rolling operation of card bodies of various specifications. It has strong versatility and does not require the preparation of molds of various specifications, which saves mold amortization costs and avoids the situation where molds of various specifications occupy a large amount of space. The above is only a preferred embodiment of the utility model and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technical personnel in this field can make some changes or modify the technical content disclosed above into equivalent embodiments without departing from the scope of the technical solution of the utility model. However, any brief modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the technical solution of the utility model.

Claims

1. A spring grounding card body processing mold, characterized by: It includes a pre-rolling mold and a rolling mold; The pre-curling mold includes a first upper template and a first lower template, and the pre-curling of the connecting section on the card body is achieved through the cooperation of the first upper template and the first lower template; A first forming punch is installed on the first upper template; Assuming that one side of the first lower template is 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 close to the feeding side is the pre-rolling side, the pre-rolling side includes an upper vertical surface, a middle horizontal step surface and a bottom inner circular arc surface arranged in sequence from top to bottom, and the middle horizontal step surface and the bottom inner circular arc surface are arranged on the outside of the upper vertical surface, a lifting platform is provided on the first lower template between the feeding side and the pre-rolling side and close to the pre-rolling side, a feeding guide block is provided on the first lower template at the outside of the lifting platform, and the feeding guide blocks are on both sides of the width of the card body, and a guide groove is correspondingly provided between the inner side of the feeding guide block and the first lower template; The bottom end of the first forming punch is arranged horizontally, and a side thereof close to the baffle plate is provided with an arc chamfer; The rolling mold includes a third upper template and a third lower template, and the third upper template cooperates with the third lower template to realize the rolling forming of the connecting section; The third upper mold plate is provided with a second pressing block and a push plate, and 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 further provided with a positioning hole corresponding to the circular hole, and the third upper template is provided with a positioning column corresponding to the positioning hole.

2. The spring grounding card body processing mold according to claim 1, characterized in that: A positioning block is provided on the third lower template, 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 the curled side. A semicircular groove is provided at the bottom of the curled side. When the second pressing block is pressed down into place, the semicircular groove is concentrically arranged with the arc surface.

3. The spring grounding card body processing mold according to claim 2, characterized in that: A forming groove is provided on the third lower template, the movable forming block is arranged in the forming groove, a connecting spring is arranged in the forming groove on the side of the movable forming block away from the positioning block, and the two ends of the connecting spring are respectively fixedly connected to the forming groove and the movable forming block.

4. The spring grounding card body processing mold according to claim 3, characterized in that: The movable forming block is provided with a wedge-shaped inclined surface at a top corner close to the positioning block. The push plate is vertically arranged, and its bottom is provided with a wedge-shaped structure matching the wedge-shaped inclined surface.

5. The spring grounding card body processing mold according to claim 3, characterized in that: The third lower template is further provided with edge limiting blocks on both sides of the movable forming block, and an accommodating groove for accommodating a horizontally placed copper sheet is formed between the inner side of the edge limiting blocks and the third lower template.

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