A forming process and die for a B-type leaf spring nut for automobiles

Abstract

The present invention provides a forming process and mold for a B-type leaf spring nut for automobiles, which relates to the field of automobile technology, and includes a mold body and a support plate. The mold body is composed of a left mold plate and a right mold plate, and the left mold plate and the right mold plate are respectively fixedly installed on the left and right sides of the support plate. A block body is fixedly installed on the top of the support plate near the rear side, and a convex strip is extended from the front of the block body. Two long strips are fixedly installed on the top of the support plate, and a plurality of circular holes are opened between the two long strips on the top of the support plate. When producing the B-type leaf spring nut, the present invention punches holes in the blank and positions the blank, which can improve the stability during processing. The blank is cut, pre-stretched, punched, tapped, and stamped to form a boss. After two bends, the B-type leaf spring nut can be cut. The production process is simple, and the B-type leaf spring nut can be formed by cutting after completion. It is easy to form and can improve processing efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of automobiles, in particular to a molding process and a mold for a B-type leaf spring nut for automobiles. Background Art

[0002] Automobile refers to a non-track-borne vehicle that is powered by power and has four or more wheels. It is mainly used to carry people and (or) goods, and to tow vehicles carrying people and (or) goods. B-type leaf spring nuts are used in automobiles. B-type leaf spring nuts are used on larger body sheet metal parts. B-type leaf spring nuts are placed in them, or inserted into the edges of sheet metal parts or plastic thin plates to fix parts or brackets. They can also be inserted into the front and rear sheet metal parts of the car to fix the car license plate.

[0003] When processing traditional B-type leaf spring nuts, it is necessary to cut the blank into blank blocks, and then process the blank blocks into shapes. The forming process is complicated and inconvenient to process. It needs to be formed multiple times, which affects production efficiency and is difficult to meet the needs of manufacturers. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that in the prior art, when processing B-type leaf spring nuts, the blank needs to be cut to form a blank block, and the blank block needs to be processed and formed, the forming process is complicated, the processing is inconvenient, multiple forming processes are required, and the production efficiency is low. A forming process and mold for a B-type leaf spring nut for an automobile are proposed.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a forming mold for a B-type leaf spring nut for an automobile, comprising a mold body and a support plate, wherein the mold body is composed of a left template and a right template, and the left template and the right template are respectively fixedly installed on the left and right sides of the support plate, a block is fixedly installed on the top of the support plate near the rear side, a convex strip is extended from the front side of the block, two long strips are fixedly installed on the top of the support plate, and a plurality of circular holes are opened on the top of the support plate between the two long strips.

[0006] Furthermore, a plurality of modules are fixedly installed on the top of the left template and the top of the right template.

[0007] Furthermore, long grooves are provided on the corresponding sides and at the bottom of the two long strips.

[0008] Furthermore, the thickness of the support plate is equal to the thickness of the mold body.

[0009] Furthermore, cylinders are fixedly installed on the tops of the left template and the right template near the four corners.

[0010] Furthermore, a plurality of positioning columns are fixedly installed on the top of the left template and the right template, and the plurality of positioning columns are symmetrically distributed on both sides of the horizontal center of the mold body.

[0011] A forming process of a B-type leaf spring nut for an automobile comprises the following steps:

[0012] S1. Punch the blank to form a positioning hole on the blank, place the blank on a mold body, select a corresponding module, and position the blank through the positioning hole.

[0013] S2. The blank is beveled by the module to form a U-shaped cut.

[0014] S3, pre-stretching the blank after the cut so that the blank block at the cut is tilted upward.

[0015] S4, the pre-stretched blank block is turned over so that the circular hole in the blank block is turned up.

[0016] S5. Perform tapping on the turned-up round hole.

[0017] S6. Chamfering the blank and punching holes in the blank block after the corner cutting.

[0018] S7. Punch the tapped circular hole to form a boss.

[0019] S8. Bend the blank block.

[0020] S9. Cut off the blank block to obtain the B-type leaf spring nut.

[0021] Furthermore, according to the operation steps in S6, when the blank is beveled, the cut is aligned with the cut in S2.

[0022] Further, according to the operation steps in S8, when bending the blank block, two bending processes are required, namely, pre-bending and secondary bending.

[0023] Furthermore, according to the operation steps in S9, the bent blank block is trimmed before the blank block is cut.

[0024] The present invention provides a molding process and a mold for a B-type leaf spring nut for automobiles. The molding process and the mold have the following beneficial effects:

[0025] In the present invention, when producing B-type leaf spring nuts, the blank is punched and positioned, which can improve the stability during processing. The blank is corner-cut, pre-stretched, punched, tapped, and stamped to form a boss. After two bends, the B-type leaf spring nut can be cut. The production process is simple, and the B-type leaf spring nut can be formed by cutting after completion. It is easy to form and can improve processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a forming die of a B-type leaf spring nut for automobiles according to the present invention;

[0027] Figure 2 A top view of a forming die for a B-type leaf spring nut for an automobile according to the present invention;

[0028] Figure 3 It is a schematic diagram of blank processing of the present invention;

[0029] Figure 4 The present invention is a flow chart of a forming process of a B-type leaf spring nut for automobiles.

[0030] In the figure: 1, mold body; 2, support plate; 3, block; 4, convex strip; 5, long strip block; 11, left template; 12, right template; 13, module. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two components; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Embodiment 1, refer to Figure 1-4As shown, a forming die for a B-type leaf spring nut for an automobile comprises a die body 1 and a support plate 2. The die body 1 is composed of a left die plate 11 and a right die plate 12. The left die plate 11 and the right die plate 12 are respectively fixedly mounted on the left and right sides of the support plate 2. A block body 3 is fixedly mounted on the top of the support plate 2 near the rear side. A convex strip 4 is extended from the front of the block body 3. Two long strip blocks 5 are fixedly mounted on the top of the support plate 2. A plurality of circular holes are provided on the top of the support plate 2 between the two long strip blocks 5.

[0035] Specifically, a plurality of modules 13 are fixedly mounted on the top of the left template 11 and the right template 12 .

[0036] Specifically, long grooves are provided on the corresponding sides and at the bottom of the two long strips 5 .

[0037] Specifically, the thickness of the support plate 2 is equal to the thickness of the mold body 1 .

[0038] Specifically, cylinders are fixedly installed on the tops of the left template 11 and the right template 12 near the four corners.

[0039] Specifically, a plurality of positioning columns are fixedly installed on the top of the left template 11 and the right template 12 , and the plurality of positioning columns are symmetrically distributed on both sides of the horizontal center of the mold body 1 .

[0040] A forming process of a B-type leaf spring nut for an automobile comprises the following steps:

[0041] Step 1: Punch the blank to form a positioning hole on the blank, place the blank on the mold body 1, select the corresponding module 13, and position the blank through the positioning hole.

[0042] Step 2: Use module 13 to perform corner cutting on the blank to form a U-shaped cut.

[0043] Step 3: pre-stretch the blank after the cut so that the blank block at the cut is tilted upward.

[0044] Step 4: Flip the pre-stretched blank block so that the circular hole in the blank block is flipped upward.

[0045] Step 5: Tap the round hole after turning it up.

[0046] Step 6: Chamfer the blank and punch holes in the blank block after the corner cutting.

[0047] Step 7: Punch the tapped circular hole to form a boss.

[0048] Step 8: Bend the blank block.

[0049] Step 9. Cut off the blank block to get the B-type leaf spring nut.

[0050] Specifically, according to the operation steps in step six, when the blank is beveled, the cut is aligned with the cut in step two.

[0051] Specifically, according to the operation steps in step eight, when bending the blank block, two bending steps are required, namely, pre-bending and secondary bending.

[0052] Specifically, according to the operation steps in step nine, the bent blank block is arranged before cutting the blank block.

[0053] By comparing the traditional molding method with the method of the present application, the following data are obtained, as shown in Table 1:

[0054] Table 1 Experimental data table

[0055] Molding process Production efficiency Forming difficulty Prior art complex Lower Not easy to shape Example Simple Higher Easy to shape

[0056] It is concluded from the above experimental data that the first embodiment, a molding process and a mold for a B-type leaf spring nut for automobiles, has the effects of simple molding process, high production efficiency and easy molding when used.

[0057] A forming die for a B-type leaf spring nut for an automobile, comprising a die body 1 and a support plate 2, wherein the die body 1 is composed of a left die plate 11 and a right die plate 12, wherein the left die plate 11 and the right die plate 12 are respectively fixedly mounted on the left and right sides of the support plate 2, wherein a block body 3 is fixedly mounted on the top of the support plate 2 near the rear side, wherein a convex strip 4 is extended from the front side of the block body 3, wherein two long strips 5 are fixedly mounted on the top of the support plate 2, wherein a plurality of circular holes are opened on the top of the support plate 2 between the two long strips 5, wherein the tops of the left die plate 11 and the right die plate 12 are fixedly mounted There are multiple modules 13, long grooves are opened on the corresponding sides and at the bottom of the two long blocks 5, the thickness of the support plate 2 is equal to the thickness of the mold body 1, cylinders are fixedly installed on the tops of the left template 11 and the right template 12 near the four corners, and multiple positioning columns are fixedly installed on the tops of the left template 11 and the right template 12. The multiple positioning columns are symmetrically distributed on both sides of the horizontal center of the mold body 1. When in use, the support plate 2 plays a fixing role, and the blank can be placed in the long grooves opened in the two long blocks 5, which can limit the position of the blank.

[0058] A forming process of a B-type leaf spring nut for automobiles, comprising the following steps: step 1, punching a blank to form a positioning hole on the blank, placing the blank on a die body 1, selecting a corresponding module 13, positioning the blank through the positioning hole, and positioning the blank through the positioning hole to improve the stability during processing; step 2, chamfering the blank through the module 13 to form a U-shaped incision; step 3, pre-stretching the blank after the incision so that the blank block at the incision is tilted upward; step 4, flipping the pre-stretched blank block so that the circular hole in the blank block is flipped upward; step 5, flipping the flipped circular hole The hole is tapped to form an internal thread in the circular hole. Step six, the blank is chamfered and a hole is punched in the blank block after chamfering. When the blank is chamfered, the incision is aligned with the incision in step two. Step seven, the circular hole after tapping is punched to form a boss. Step eight, the blank block is bent. When bending the blank block, two bendings are required, namely pre-bending and secondary bending, so that the blank block is bent. Step nine, the blank block is cut off. Before cutting the blank block off, the bent blank block is sorted to obtain a B-type leaf spring nut. The sorted B-type leaf spring nut can meet the use requirements.

[0059] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and improved concepts of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A forming process for a B-type leaf spring nut for automobiles, characterized in that: A molding die for a B-type leaf spring nut for an automobile is used, comprising a mold body (1) and a support plate (2), wherein the mold body (1) is composed of a left mold plate (11) and a right mold plate (12), wherein the left mold plate (11) and the right mold plate (12) are respectively fixedly mounted on the left and right sides of the support plate (2), a block body (3) is fixedly mounted on the top of the support plate (2) near the rear side, a convex strip (4) is extended from the front side of the block body (3), two long strips (5) are fixedly mounted on the top of the support plate (2), a plurality of circular holes are opened on the top of the support plate (2) between the two long strips (5), and a plurality of modules (13) are fixedly mounted on the top of the left mold plate (11) and the right mold plate (12), wherein the molding process comprises the following steps: S1, punching a blank to form a positioning hole on the blank, placing the blank on a mold body (1), selecting a corresponding module (13), and positioning the blank through the positioning hole; S2, performing corner cutting on the blank through module (13) to form a U-shaped cut; S3, pre-stretching the blank after the cut so that the blank block at the cut is tilted upward; S4, turning the pre-stretched blank block so that the circular hole in the blank block turns upward; S5, tapping the turned-up round hole; S6, chamfering the blank, and punching holes in the chamfered blank block; S7, punching the tapped circular hole to form a boss; S8, bending the blank block; S9. Cut off the blank block to obtain the B-type leaf spring nut.

2. The forming process of a B-type leaf spring nut for automobile according to claim 1, characterized in that: Long grooves are provided on the corresponding sides and at the bottom of the two long strips (5).

3. The forming process of a B-type leaf spring nut for automobile according to claim 1, characterized in that: The thickness of the support plate (2) is equal to the thickness of the mold body (1).

4. The forming process of a B-type leaf spring nut for automobile according to claim 1, characterized in that: Columns are fixedly mounted on the tops of the left template (11) and the right template (12) near the four corners.

5. The forming process of a B-type leaf spring nut for automobile according to claim 1, characterized in that: A plurality of positioning columns are fixedly mounted on the top of the left template (11) and the right template (12), and the plurality of positioning columns are symmetrically distributed on both sides of the horizontal center of the mold body (1).

6. The forming process of a B-type leaf spring nut for automobile according to claim 1, characterized in that: The method comprises the following steps: when the blank is corner-cut according to the operation step in S6, the cut is aligned with the cut in S2.

7. The forming process of a B-type leaf spring nut for automobile according to claim 1, characterized in that: The method comprises the following steps: according to the operation steps in S8, when bending the blank block, two bending steps are required, namely, pre-bending and secondary bending.

8. The forming process of a B-type leaf spring nut for automobile according to claim 1, characterized in that: The method comprises the following steps: according to the operation steps in S9, before cutting off the blank block, the bent blank block is arranged.

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