Stamping die for forming solid round terminal

Abstract

The utility model discloses a stamping die for forming a solid round terminal, which comprises an upper die and a lower die, the lower die comprises a lower die slide block seat, a lower die lead-in block and a lower die insert slotting tool, and the upper die pushes the lower die insert slotting tool to move up and down towards the lower die slide block seat along the lower die lead-in block when the die is opened and closed. A lower die slide block insert capable of elastically resetting is horizontally and slidably arranged on the lower die slide block seat, the lower die slide block insert is matched with the lower die insert slotting tool through a wedge-shaped surface, semicircular grooves and a limiting bulge are machined on the lower die slide block insert, the two semicircular grooves are oppositely arranged to extrude and form a solid terminal, and the limiting bulge is matched with the limiting groove. The limiting grooves are located in the stripper plate sliding block insert cores, the two stripper plate sliding block insert cores are oppositely arranged and can elastically reset in the horizontal direction, and the stripper plate sliding block insert cores are matched with the stripper plate insert core slotting tool through wedge-shaped faces. According to the device, the two lower die sliding block insert cores are horizontally and elastically reset, and the product forming stability is kept in combination with the stripper plate sliding block insert cores.

Description

Technical Field

[0001] The utility model relates to the technical field of local improvement design of hardware stamping dies, in particular to a stamping die for forming solid round terminals. Background Art

[0002] With the development and popularization of various types of hardware molds, various hardware products emerge in an endless stream. For hardware products with solid round terminals, the usual design concept is to stamp and form the round terminals from top to bottom, such as Figure 4 As shown, the disadvantage of the upper and lower stamping and enclosing forming is that the solid enclosing terminal is prone to overflow in the middle of the outer part, such as Figure 5 The shaded areas on the left and right sides represent overflow, and the area of ​​the circle must be calculated very accurately to prevent overflow. Even without overflow, the surface of the product, created by the gaps left during stamping, will be somewhat flat. This means the center of the solid, enclosed round terminal will be flat, failing to achieve the desired effect.

[0003] Prior art patent CN211276145U discloses a striking head stamping die, comprising an upper die and a lower die, with a round metal placed between them. The die is then horizontally interspersed with a station for punching double-sided positioning edges, a lower latch-type positioning station, an upper and lower counter-punching cold heading forming station, a first upper latch-type positioning station, an upper and lower counter-punching rounding shaping station, a second upper latch-type positioning station, a slider-type hole shaping station, and a bisecting and unloading station. The round metal is fed into the die via a feeder, and multiple processing stations are completed within the die. This multi-station forming process ensures dimensional stability and increases production capacity.

[0004] The patent with announcement number CN213997444U discloses a precision high-speed continuous hardware stamping die, including an upper die and a lower die, a circular metal is arranged between the upper die and the lower die, and the upper die and the lower die are provided with side punching positioning groove stations, transverse groove positioning stations, upper and lower hedging cold heading forming stations, slider-type hole shaping stations, punching double-sided positioning edge stations, vertical latch-type positioning stations, upper and lower hedging rounding shaping stations and cutting discharge stations in sequence along the horizontal direction. The utility model cooperates with stamping production through multiple stations. Each station uses front and rear positioning grooves for precise positioning, ensuring the dimensional stability of multiple holes, greatly improving the dimensional stability and production capacity of the product, and using positioning grooves for positioning to prevent the circular metal material from twisting in the die, ensuring the positioning accuracy of each step, and using upper and lower floating modules to clamp the circular metal material at the same time, and then the internal punches of the upper and lower floating modules perform upper and lower hedging cold heading forming, ensuring the appearance integrity of the product.

[0005] In the above technical solution, edge positioning or positioning groove positioning is used to prevent the circular metal material from twisting in the mold, ensuring the positioning accuracy of each step. The circular metal material is clamped simultaneously by the upper and lower floating modules, and then the internal punches of the upper and lower floating modules are used to perform cold heading forming, ensuring the appearance integrity of the product.

[0006] In order to solve one of the above problems, the present application provides a stamping die for forming solid round terminals. Utility Model Content

[0007] The purpose of the utility model is to solve the problems existing in the prior art, and to propose a stamping die for forming solid round terminals. The horizontal elastic reset setting of two lower die slider inserts and the combination of the stripping slider insert maintain the stability of product forming.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a stamping die for forming solid round terminals, comprising an upper die and a lower die, the lower die comprising a lower die slider seat, a lower die guide block and a lower die insert knife, when the die is opened and closed, the upper die pushes the lower die insert knife to move up and down along the lower die guide block toward the lower die slider seat, a lower die slider insert that can be elastically reset is provided on the lower die slider seat, the lower die slider insert and the lower die insert knife cooperate through a wedge surface, and the lower die slide A semicircular groove and a limiting protrusion are processed on the block insert, and the two semicircular grooves are arranged opposite to each other to extrude and form a solid terminal. A semicircular groove is processed on one side of the limiting protrusion, and the other side of the limiting protrusion cooperates with the limiting groove. The limiting groove is located on the deboard slider insert, and the two deboard slider inserts are arranged opposite to each other and can be elastically reset in the horizontal direction. The deboard slider insert and the deboard insert blade are matched through a wedge surface, and the deboard insert blade and the lower mold insert blade both cooperate with the upper mold to move up and down.

[0009] Furthermore, the two limiting grooves are arranged opposite to each other to accommodate two limiting protrusions arranged opposite to each other.

[0010] Furthermore, a semicircular groove and a first limiting hole are processed on one side of the lower die slider insert as described above, and a first wedge-shaped surface is processed on the other side of the lower die slider insert.

[0011] Furthermore, a first spring is installed between the two first limiting holes.

[0012] Furthermore, a second wedge-shaped surface is processed on the lower die insert as described above, and the second wedge-shaped surface matches the first wedge-shaped surface.

[0013] Furthermore, a limiting groove and a second limiting hole are processed on one side of the above-mentioned deboarding slider inlet, and a third wedge-shaped surface is processed on the other side of the deboarding slider inlet.

[0014] Furthermore, a second spring is installed between the two second limiting holes as described above.

[0015] Furthermore, a fourth wedge surface is processed on the stripping insert as described above, and the fourth wedge surface matches the third wedge surface.

[0016] Furthermore, the side of the limiting protrusion as described above is processed with a first arcuate surface and a first plane, and the side of the limiting groove is processed with a second arcuate surface and a second plane, the second arcuate surface matches the first arcuate surface, and the second plane matches the first plane.

[0017] Furthermore, the length of the lower mold inserter blade as described above is greater than the length of the stripping mold inserter blade.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the present device adopts the slider principle, which divides the rounded forming parts into two parts and runs them simultaneously on the left and right, that is, the horizontal elastic reset setting of the two lower mold slider inserts is combined with the stripping slider insert to maintain the stability of the product forming. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the mold opening state of the utility model;

[0020] Figure 2 This is a schematic diagram of the mold closing state of the utility model;

[0021] Figure 3 for Figure 2 A in the middle is an enlarged schematic diagram;

[0022] Figure 4 This is a schematic diagram of the stamping component before improvement;

[0023] Figure 5 for Figure 4 Schematic diagram of stamping products.

[0024] In the figure: 1. Plate stripping insert; 2. Lower die insert; 3. Second spring; 4. Plate stripping slider insert; 5. Lower die guide block; 6. First spring; 7. Lower die slider insert; 71. Limiting protrusion; 72. Semicircular groove; 8. Lower die slider seat. DETAILED DESCRIPTION

[0025] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "fixed", "installed", "connected", "set", etc. should be understood in a broad sense. For example, when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "installed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, it 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, or it can be a communication between the two elements.

[0027] For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1

[0030] Reference Figure 1-3As shown, the utility model is a stamping die for forming solid round terminals. The basic components of the stamping die include an upper die and a lower die. The lower die includes a lower die slider seat 8, a lower die guide block 5 and a lower die insert knife 2. When opening and closing the die, the upper die pushes the lower die insert knife 2 to move up and down along the lower die guide block 5 toward the lower die slider seat 8. Specifically, the lower die slider seat 8 is horizontally slidably provided with an elastically resettable lower die slider insert 7. The lower die slider insert 7 and the lower die insert knife 2 are matched through a wedge surface, that is, the lifting movement of the lower die insert knife 2 can be converted into the horizontal linear movement of the lower die slider insert 7, combined with its elastic reset The design enables the lower mold slider insert 7 to achieve horizontal reciprocating linear motion. A semicircular groove 72 and a limiting protrusion 71 are processed on the lower mold slider insert 7. The two semicircular grooves 72 are arranged opposite to each other to extrude and form a solid terminal. A semicircular groove 72 is processed on one side of the limiting protrusion 71, and the other side of the limiting protrusion 71 cooperates with the limiting groove. The limiting groove is located on the deboard slider insert 4. The two deboard slider inserts 4 are arranged opposite to each other and can be elastically reset in the horizontal direction. The deboard slider insert 4 is matched with the deboard insert blade 1 through a wedge surface. The deboard insert blade 1 and the lower mold insert blade 2 both cooperate with the upper mold to move up and down.

[0031] The position and structural design of the limiting protrusion 71 and the limiting groove are because the wall surface of the rounded position of the lower mold part (the semicircular groove 72 is located on the side of the limiting protrusion 71) is relatively thin, and there will be elasticity when the rounded terminal is formed, resulting in the lower mold slider insert 7 not having a certain stability. At this time, the de-board insert slider shows its importance. It can fix the thin wall position of the lower mold part, so that it has considerable pressure maintenance stability during production. When the upper and lower molds are closed, the two lower mold slider inserts 7 are first simultaneously acted upon by the two lower mold insert knives 2 and approach each other, so that the two semicircular grooves 72 are squeezed to form a solid terminal, and then the two de-board insert knives 1 respectively drive the two de-board slider inserts 4 to press down and overcome the elastic force to approach, so that the limiting groove cooperates with the limiting protrusion 71 to maintain pressure and limit, which plays a role in stabilizing the lower mold slider inserts 7, and the solid round terminal is formed stably and with good quality; when the upper and lower molds are opened, the de-board insert knife 1 rises and the two de-board slider inserts 4 rise and the distance between them increases, and then the lower mold insert knife 2 rises and the distance between the two lower mold slider inserts 7 increases, the two semicircular grooves 72 move away from the solid round terminal, and then continue to the next process.

[0032] Example 2

[0033] Reference Figure 1-3 As shown, based on the technical solution of embodiment 1, a stamping die for forming solid round terminals is provided. Figure 3As can be seen, the two limiting grooves are arranged opposite each other to accommodate the two limiting protrusions 71. One side of the limiting protrusion 71 cooperates with the limiting groove, and the other side of the limiting protrusion 71 is processed with a semicircular groove 72. Because the contact areas between the semicircular groove 72, the limiting protrusion 71 and the limiting groove need to be durable, the material selection also needs to be electroplated and hardened to reduce wear.

[0034] Furthermore, the aforementioned lower die slider insert 7 is machined with a semicircular groove 72 and a first stopper hole on one side. The first stopper hole is located below the semicircular groove 72. A first wedge-shaped surface is machined on the other side of the lower die slider insert 7. Furthermore, a first spring 6 is installed between the two first stopper holes, applying a spring force to separate the two lower die slider inserts 7. Furthermore, a second wedge-shaped surface is machined on the lower die insert blade 2. This second wedge-shaped surface cooperates with the first wedge-shaped surface to convert the vertical linear motion of the lower die insert blade 2 into horizontal linear motion of the lower die slider insert 7.

[0035] Example 3

[0036] Reference Figure 1-3 As shown, based on the technical solution of the above embodiment, a stamping die for forming a solid round terminal is provided. Figure 1 As can be seen, the stripper slider insert 4 has a retaining groove and a second retaining hole machined into one side, with the retaining groove located below the second retaining hole. A third wedge-shaped surface is machined into the other side of the stripper slider insert 4. Furthermore, a second spring 3 is installed between the two second retaining holes, exerting an elastic force to separate the two stripper slider inserts 4. Furthermore, a fourth wedge-shaped surface is machined into the stripper insert blade 1. This fourth wedge-shaped surface cooperates with the third wedge-shaped surface to convert the vertical linear motion of the stripper insert blade 1 into the horizontal linear motion of the stripper slider insert 4.

[0037] Furthermore, the side of the positioning protrusion 71 is machined with a first curved surface and a first flat surface, while the side of the positioning groove is machined with a second curved surface and a second flat surface. The second curved surface cooperates with the first curved surface, and the second flat surface cooperates with the first flat surface. The curved surface design facilitates a circular transition when the two contact, while the flat contact facilitates stable contact pressure. Furthermore, the length of the lower die insert blade 2 as described above is greater than that of the stripper insert blade 1, so that the lower die insert blade 2 actuates before the stripper insert blade 1 when the upper and lower dies are closed.

[0038] The traditional solid round terminal is formed by upper and lower extrusion molding, such as Figure 4 As shown, the obtained product is Figure 5As shown, there is overflow in the black shaded areas on both sides, or there are areas in the product that are not fully extruded, that is, gaps are reserved in the design of the upper and lower extruded parts. Products in both of the above situations are unqualified. In order to avoid overflow and flat surfaces in the production of solid round terminals, the research will mainly analyze the reasons for the overall rounding of the product and summarize a solution. Specifically, the traditional slider principle is adopted to divide the rounding forming part into two parts and operate them simultaneously on the left and right. The upper part is completed by the stripping insert 1, the lower mold insert 2, the stripping slider insert 4 and the second spring 3. The lower part is completed by the lower mold guide block 5, the lower mold slider insert 7 and the lower mold slider seat 8 and the first spring 6. The spring type mainly depends on the size of the part. The stripping slider insert 4 is a key part. When the two lower mold slider inserts 7 are closed, they overcome the elastic force of the first spring 6 and move closer. The two semicircular grooves 72 are squeezed to achieve the terminal wrapping molding. Since the semicircular groove 72 is on one side of the limiting protrusion 71, the wall surface at this position is relatively thin, and there will be elasticity during the wrapping molding, resulting in the lower mold slider insert 7 not having a certain stability. At this time, the stripping slider insert 4 shows its importance. When the stripping slider insert 4 is closed, as the lower mold slider insert 7 completes the molding action, the limiting groove is used to cooperate with the limiting protrusion 71. The two limiting grooves just accommodate the two limiting protrusions 71, which plays the role of fixing the semicircular groove 72 at the thin position of the upper wall of the lower mold slider insert 7, meeting the requirements of stability in the production of extruded solid terminals.

[0039] The main action process and design considerations of the device of the present invention are as follows: the lower die insert knife 2 and the stripping insert knife 1 must be made of SHK-9 or ASP material and need to be ALCRN electroplated and hardened, so that the parts will not be easily worn and can be produced continuously; the lower die guide block 5 needs to be made of tungsten steel, so that the parts will not be easily worn and can be produced continuously; the stripping insert knife 1 and the lower die insert knife 2 must pay attention to the time difference, and when designing, the lower die slider insert 7 must be based on completing the rounding extrusion molding first.

[0040] In the device of the present invention, the assembly and matching relationship of the various components of the stamping die are involved, and the materials of the mold opening and closing actions, springs and other components are selected from existing technologies or materials. The relevant technical personnel can directly purchase or customize them from the market according to the required product models and specifications.

[0041] The above description is only a preferred specific embodiment of the present invention. Common knowledge such as the specific structure and characteristics of the scheme is not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above embodiment, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. Any person skilled in the art who is familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the scope of protection of the present invention.

Claims

1. A stamping die for forming solid round terminals, comprising an upper die and a lower die, wherein the lower die comprises a lower die slider seat (8), a lower die guide block (5) and a lower die insert blade (2); when the die is opened or closed, the upper die pushes the lower die insert blade (2) to move upward and downward along the lower die guide block (5) toward the lower die slider seat (8), wherein the stamping die is characterized in that: The lower die slider seat (8) is provided with a lower die slider insert (7) that can be elastically reset, and the lower die slider insert (7) and the lower die insert insert blade (2) are matched through a wedge surface. The lower die slider insert (7) is processed with a semicircular groove (72) and a limiting protrusion (71). The two semicircular grooves (72) are relatively arranged to extrude a solid terminal. One side of the limiting protrusion (71) is processed with a semicircular groove (72), and the other side of the limiting protrusion (71) is matched with the limiting groove. The limiting groove is located on the stripping slider insert (4). The two stripping slider inserts (4) are relatively arranged and can be elastically reset in the horizontal direction. The stripping slider insert (4) and the stripping insert insert blade (1) are matched through a wedge surface. The stripping insert insert blade (1) and the lower die insert insert blade (2) are both matched with the upper die to move up and down.

2. A stamping die for forming a solid round terminal according to claim 1, characterized in that: The two limiting grooves are arranged opposite to each other to accommodate two limiting protrusions (71) arranged opposite to each other.

3. A stamping die for forming a solid round terminal according to claim 2, characterized in that: A semicircular groove (72) and a first limiting hole are processed on one side of the lower die slider insert (7), and a first wedge-shaped surface is processed on the other side of the lower die slider insert (7).

4. A stamping die for forming a solid round terminal according to claim 3, characterized in that: A first spring (6) is installed between the two first limiting holes.

5. A stamping die for forming solid round terminals according to claim 4, characterized in that: A second wedge-shaped surface is machined on the lower die insert blade (2), and the second wedge-shaped surface matches the first wedge-shaped surface.

6. A stamping die for forming solid round terminals according to claim 2, characterized in that: One side of the stripping slider insert (4) is processed with a limiting groove and a second limiting hole, and the other side of the stripping slider insert (4) is processed with a third wedge surface.

7. A stamping die for forming solid round terminals according to claim 6, characterized in that: A second spring (3) is installed between the two second limiting holes.

8. A stamping die for forming solid round terminals according to claim 7, characterized in that: The stripping inserting knife (1) is processed with a fourth wedge-shaped surface, and the fourth wedge-shaped surface matches the third wedge-shaped surface.

9. A stamping die for forming a solid round terminal according to any one of claims 1 to 8, characterized in that: The side of the limiting protrusion (71) is processed with a first arcuate surface and a first plane, and the side of the limiting groove is processed with a second arcuate surface and a second plane. The second arcuate surface matches the first arcuate surface, and the second plane matches the first plane.

10. A stamping die for forming solid round terminals according to claim 9, characterized in that: The length of the lower die insert blade (2) is greater than the length of the stripping die insert blade (1).

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