Round plug terminal progressive die

Abstract

The utility model discloses a progressive die for a round plug terminal, which relates to the technical field of progressive dies, and adopts the technical scheme that the progressive die is applied to manufacturing of the round plug terminal, and the round plug terminal comprises a connecting part, a wire clamping part and an inserting column part; the progressive die comprises an upper die body and a lower die body, a conveying system used for conveying a material belt is arranged between the upper die body and the lower die body, and the upper die body and the lower die body are provided with a knife edge work station set used for cutting workpieces on the material belt; and the forming work station group comprises a bending work station, an edge rolling work station and a puncturing work station and is used for forming the wire clamping part and the column inserting part. The progressive die has the beneficial effects that the progressive die in the scheme can be used for continuously manufacturing the round plug terminal, and the production efficiency of the round plug terminal is well improved. By arranging the scrap bouncing prevention structure at the plug end blanking station, waste bouncing can be effectively avoided, and therefore it is guaranteed that follow-up machining is not affected.

Description

Technical Field

[0001] The utility model relates to the field of progressive dies, and particularly to a progressive die for round plug terminals. Background Art

[0002] Terminal blocks are widely used because of their convenience in line connection. Especially in the automotive manufacturing industry, a large number of connecting wires can be connected more orderly and stably with the help of terminal blocks. According to different requirements such as the type of connecting wire and the wiring method, the types of terminal blocks are also diverse.

[0003] Round plug terminal blocks are very convenient to match with their corresponding connectors because they have a stud structure. This type of terminal block has specific technical requirements and difficulties in processing. The outer diameter of the stud part, that is, the round plug part, is relatively small, and it is difficult to form a rolled circle at this place during continuous processing operations. The end of the stud presents a spherical head structure, which is difficult to form. The above problems are likely to result in unqualified workpieces, thus affecting the processing efficiency of products. Summary of the Utility Model

[0004] Aiming at one of the deficiencies of the prior art, the utility model provides a progressive die for round plug terminals to solve the manufacturing problem of round plug terminals.

[0005] To achieve the above object, the utility model provides the following technical solution: A progressive die for round plug terminals. This progressive die is used for the production of round plug terminals, and the round plug terminals include:

[0006] A connecting part, which is a plate structure and is provided with a through hole thereon;

[0007] A wire clamping part, which is arranged in a "U" shape, and the middle part thereof is connected to one side edge of the plate body of the connecting part, and its opening direction is parallel to the axial direction of the through hole of the connecting part;

[0008] A stud part, which is arranged on the side of the wire clamping part away from the connecting part, is a cylinder as a whole, and one end of the stud part away from the wire clamping part is a spherical head;

[0009] The progressive die includes an upper die and a lower die, and a conveying system for conveying a strip is arranged between the upper die and the lower die. The upper die and the lower die are provided with:

[0010] A cutting edge work station group, which is used for cutting the workpiece on the strip;

[0011] A forming work station group, which includes a bending work station, a rolling work station, and a piercing work station, and is used for forming the wire clamping part and the stud part.

[0012] Preferably, the cutting edge work station group includes:

[0013] The first cutting-edge station includes two symmetrically arranged first cutting edges. The first cutting edges can cut both sides of the wire clamping part, and there is a gap between the first cutting edges and the side edges of the wire clamping part.

[0014] Preferably, with the conveying direction of the strip in the working state as the front side, the forming station group further includes:

[0015] The rib pressing station is arranged in front of the first cutting-edge station. The rib pressing station includes a rib pressing head, and the rib pressing head is provided with a number of transverse strip-shaped protrusions. The rib pressing station can form a rib structure on the workpiece of the strip.

[0016] Preferably, the cutting-edge station group further includes:

[0017] The second cutting-edge stations are arranged in front of the rib pressing station in several numbers. The second cutting-edge stations are arranged in sequence and respectively cut the corresponding connecting part, wire clamping part, and inserting post part of the workpiece.

[0018] Preferably, the second cutting-edge stations include:

[0019] The end cutting station is provided with one, which is used for cutting the end position of the inserting post part; the upper die cutting edge of the end cutting station is "concave" in shape, and an arc-shaped protrusion is arranged in its concave part.

[0020] Preferably, the end cutting station is provided with an anti-chip jumping structure for preventing the waste material from bouncing back, and the anti-chip jumping structure is arranged on the lower die cutting edge;

[0021] The anti-chip jumping structure is a notch opened on the lower die cutting edge. The notch corresponds to the arc-shaped protrusion, and the inner wall of the depression in the middle of the notch is inclined.

[0022] Preferably, the forming station group further includes:

[0023] The forming station, the lower die cutting edge is provided with a columnar protrusion corresponding to the inner cavity of the inserting post, and the upper die cutting edge is provided with an arc-shaped groove corresponding to the outer diameter of the inserting post.

[0024] Preferably, the forming station group further includes:

[0025] The piercing stations are arranged in front of the forming station. There are two piercing stations, including:

[0026] The first piercing station opens a first hole in the middle of the workpiece corresponding to the wire clamping part;

[0027] The second piercing station symmetrically opens second holes on both sides of the first hole of the workpiece corresponding to the wire clamping part;

[0028] Both the first hole and the second hole form a semi-cone-shaped hole structure on the wire clamping part.

[0029] Preferably, the forming station group further includes a plurality of bending stations and a curling station, which are arranged on the front side of the piercing station and can bend the wire clamping part and curl the inserting post part.

[0030] Preferably, the curling station includes:

[0031] An inserting post curling station, which is arranged at the end of the forming station group close to the discharge end of the strip. The inserting post curling station corresponds to the inserting post part and can curl the inserting post part. The inserting post curling station includes two symmetrically arranged swing blocks. One corner of the two swing blocks is respectively provided with a rotating shaft, and the rotating shaft is connected to an external structure. The swing block is rotatably connected to the rotating shaft. An arc-shaped groove is respectively opened on one side of the two swing blocks corresponding to the column body of the inserting post part.

[0032] Compared with the prior art, the following beneficial effects are achieved: The progressive die of this solution can realize the continuous production of round plug terminals, which greatly improves the production efficiency of round plug terminals. By setting an anti-chip jumping structure at the blanking station at the end of the plug, the waste can be effectively prevented from jumping back, thus ensuring that the subsequent processing is not affected. When curling the inserting post part, a symmetric swing block design is adopted, which can apply symmetric force to the whole inserting post part to avoid the problem of curling deformation due to lack of support in the middle. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic structural diagram of the round plug terminal according to the embodiment of the present application;

[0034] Figure 2 It is a schematic diagram of the round plug terminal in a transparent state according to the embodiment of the present application;

[0035] Figure 3 It is a top view of the round plug terminal according to the embodiment of the present application;

[0036] Figure 4 It is a schematic structural diagram of the first cutting edge station according to the embodiment of the present application;

[0037] Figure 5 It is a schematic structural diagram of the bead pressing station according to the embodiment of the present application;

[0038] Figure 6 It is a schematic diagram of the end blanking station according to the embodiment of the present application;

[0039] Figure 7 It is a front view of the anti-chip jumping structure according to the embodiment of the present application;

[0040] Figure 8 It is a right view of the anti-chip jumping structure according to the embodiment of the present application;

[0041] Figure 9 It is a schematic diagram of the strip state according to the embodiment of the present application Figure 1;

[0042] Figure 10 Schematic diagram of the strip state of the embodiment of the present application Figure 2 ;

[0043] Figure 11 Schematic diagram of the structure of the forming station of the embodiment of the present application;

[0044] Figure 12 is Figure 11 Partial enlarged view of A of;

[0045] Figure 13 Schematic diagram of the structure of the piercing station of the embodiment of the present application;

[0046] Figure 14 Schematic diagram of the strip state of the embodiment of the present application Figure 3 ;

[0047] Figure 15 Schematic diagram of the post inserting and curling station of the embodiment of the present application;

[0048] Figure 16 Schematic diagram of the structure of the progressive die of the embodiment of the present application.

[0049] In the figure:

[0050] 100, round plug terminal; 101, connecting part; 102, wire clamping part; 103, post inserting part;

[0051] 210, upper die; 220, lower die;

[0052] 1, first cutting edge station; 2, bead pressing station; 3, second cutting edge station; 31, end cutting station; 4, end forming station; 5, piercing station; 6, post inserting and curling station; 61, swing block. Detailed implementation manners

[0053] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0054] The present application provides the following technical solutions:

[0055] A progressive die for round plug terminals. This progressive die is applied to the production of round plug terminals 100. Please refer to Figures 1-3, the round plug terminal 100 includes a connection part 101, a wire clamping part 102, and a plug post part 103 arranged in sequence. The connection part 101 is a plate structure with a through hole formed thereon; the wire clamping part 102 is arranged in a "U" shape, and its middle part is connected to one side edge of the plate body of the connection part 101. Its opening direction is parallel to the axial direction of the through hole of the connection part 101, and the wire clamping part 102 is used to clamp the wire harness; the plug post part 103 is arranged on the side of the wire clamping part 102 away from the connection part 101, and is a cylinder as a whole. One end of the plug post part 103 away from the wire clamping part 102 is a ball head. Because the diameter of the plug post part 103 is extremely small, it is easy to bend due to force during processing, resulting in unqualified products.

[0056] The progressive die of this solution includes an upper die 210 and a lower die 220. A conveying system for conveying the strip is arranged between the upper die 210 and the lower die 220. A number of workstations are arranged between the upper die 210 and the lower die 220. The strip can complete the product processing until it reaches the discharge end through each workstation. For the convenience of description, the forward direction of the strip is the front side in the following. According to the functions of the workstations, they can be divided into a cutting edge workstation group, a forming workstation group, and an adjustment workstation group. The cutting edge workstation group is used to cut the workpiece on the strip, laying a foundation for the subsequent operations of the forming workstations through cutting. Since the connection part 101 of the terminal does not involve a bending structure, this part can be completely formed by cutting through each cutting edge workstation. The forming workstation group includes a bending workstation, a curling workstation, and a piercing workstation, which are used to form the wire clamping part 102 and the plug post part 103. The adjustment workstation group is to re-adjust the workpiece after being formed by the forming workstations to ensure good processing of the workpiece.

[0057] On the basis of the above implementation, the cutting edge workstation group includes a first cutting edge workstation 1. The first cutting edge workstation 1 is the first processing workstation on the strip. Refer to Figure 4 and Figure 9 , Figure 4 is the structural schematic diagram of the first cutting edge workstation 1, Figure 9 and Figure 9 is the strip state display diagram. The dotted part in

[0058] is the part to be processed subsequently, and the solid part is the processed part of the corresponding workstation. The first cutting edge workstation 1 includes two symmetrically arranged first cutting edges. The first cutting edges can cut both sides of the wire clamping part 102, and there is a spacing between the first cutting edges and the side edges of the wire clamping part 102.

[0059] Through the cutting of the first cutting edge workstation 1, a foundation is laid for the subsequent processing of the wire clamping part 102. Figure 5 and Figure 9, the forming station group further includes a rib pressing station 2, which is arranged on the front side of the first cutting edge station 1. The rib pressing station 2 includes a rib pressing head, and the rib pressing head is provided with three transverse strip-shaped protrusions. The rib pressing station 2 can form a rib structure on the workpiece of the strip. That is Figure 9 the three transverse rib structures in, because the clamping line part 102 occupies a relatively large area in this terminal and needs to be used as the connection structure of the insertion post part 103, through the rib pressing operation of the rib pressing station 2, the strength of the structure at the corresponding position of the clamping line part 102 can be improved.

[0060] On the basis of the above implementation, the cutting edge station group further includes a plurality of second cutting edge stations 3 arranged on the front side of the rib pressing station 2. The second cutting edge stations 3 are arranged in sequence and respectively cut the corresponding connection part 101, clamping line part 102, and insertion post part 103 of the workpiece. Its specific structure corresponds to the step-by-step cutting of different position processing requirements. By means of dispersed cutting, the excessive deformation of the workpiece caused by one-time cutting is avoided. Such as Figure 9 in, the second cutting edge station 3 on the front side of the rib pressing station 2 cuts off a part of the plate body and the through hole structure of the connection part 101. The specific structure of the second cutting edge station 3 can be matched with different tool heads according to the structure to be processed of the workpiece, and the specific structures of the remaining second cutting edge stations 3 will not be elaborated here.

[0061] It should be noted that the second cutting edge station 3 includes a terminal blanking station 31, see Figures 6-10 , the terminal blanking station 31 is used for blanking the end position of the insertion post part 103; the upper die cutting edge of the terminal blanking station 31 is "concave" in shape, and an arc-shaped protrusion is arranged in its concave part. Its cutting area is as Figure 10 shown. Because the cutting area here is very small, the terminal blanking station 31 is provided with an anti-chip jumping structure that can prevent the waste material from rebounding. The anti-chip jumping structure is arranged on the lower die cutting edge; the anti-chip jumping structure is a notch opened on the lower die cutting edge, and the notch corresponds to the arc-shaped protrusion, and the depression in the middle of the notch is an inclined inner wall. Such as Figure 7 and Figure 8 shown, the depth of the notch is a, a = 0.020mm, the width of the notch is b, b = 0.20mm, and the angle of the inclined inner wall at the notch is r, r = 5°. Through the setting of this notch structure, the waste material can be effectively prevented from rebounding, ensuring the cutting effect of the waste material, and thus improving the yield of subsequent processing.

[0062] On the basis of the above implementation, see Figure 11 , Figure 12 and Figure 14The forming station group includes a forming station 4. The lower die blade is provided with a columnar protrusion corresponding to the inner cavity of the plug column, and the upper die blade is provided with an arc-shaped groove corresponding to the outer diameter of the plug column. The forming station 4 is used to preliminarily form the port position of the plug column portion 103 so that it presents a preliminary upward bending state. The columnar protrusion is to ensure that the end position is supported so as not to cause the end position to be excessively concave here and affect the subsequent ball head structure forming.

[0063] Based on the above implementation scheme, see Figure 13 and Figure 14 The forming station group also includes a piercing station 5, which is arranged in front of the forming station 4. There are two piercing stations arranged in sequence, which are divided into a first piercing station and a second piercing station. The first piercing station opens a first opening in the middle of the workpiece corresponding to the clamping part 102; the second piercing station opens second openings symmetrically on both sides of the first opening corresponding to the clamping part 102 of the workpiece. The upper die cutter head and the lower die cutter head of the piercing station 5 are provided with corresponding conical cutting edges, and the first opening and the second opening both form three semi-conical opening structures on the clamping part 102. The large-area end of the cone faces the connecting part 103.

[0064] On the basis of the above implementation scheme, the forming station group also includes a plurality of bending stations and rolling stations, which are arranged in front of the puncturing station 5, and can bend the clamping part 102 and roll the column part 103. Bending and rolling are completed in multiple stations to ensure that the final workpiece is in a good forming state. For the specific bending and rolling punch structure, the existing technology can be adopted according to the needs, and no further description is given here.

[0065] It should be noted that the rolling station includes a column inserting and rolling station 6, such as Figure 15 As shown, the column rolling station 6 is arranged near the material strip discharge end of the forming station group, and the column rolling station 6 is arranged corresponding to the column part 103, and can roll the column part 103; the column rolling station 6 includes two symmetrically arranged swing blocks 61, and the two swing blocks 61 are respectively provided with a rotating shaft at a corner opposite to each other, and the rotating shaft is connected to the external structure, and the swing blocks 61 are rotatably connected to the rotating shaft; the two opposite sides of the two swing blocks 61 are respectively provided with arc grooves corresponding to the column body of the column part 103. The pre-folded column part 103 is rolled up by the merging action of the two swing blocks 61 when they are close together, because the swing blocks 61 can squeeze the entire column part 103 at the same time, so the problem of deformation of the column part 103 due to lack of middle support can be avoided.

[0066] On the basis of the above implementation scheme, the shaping station group includes a ball head shaping station, which shapes the spherical structure of the corresponding column part 103, and is provided with a spherical groove corresponding to the ball head. The ball head shaping station adopts a side-pushing motion structure to shape the ball head through a side-pushing action.

[0067] The upper die 210 and the lower die 220 respectively include structures such as die bases, templates, guide pillars, etc. Each workstation is arranged in sequence between the upper die 210 and the lower die 220, thereby forming a structure for continuous processing. As Figure 16 shown, for the structures such as die bases, templates, guide pillars, etc. between the upper die 210 and the lower die 220, the existing technology can be adopted and will not be elaborated here.

[0068] In the description of the present application and its embodiments, it should be understood that the orientation or positional relationship indicated by terms such as "top", "bottom", "height", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0069] In the present application and its embodiments, unless otherwise clearly defined and limited, terms such as "set", "install", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0070] In the present application and its embodiments, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0071] The foregoing disclosure provides many different embodiments or examples for implementing the different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described above. Of course, they are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides examples of various specific processes and materials, but those of ordinary skill in the art may be aware of the application of other processes and / or the use of other materials.

[0072] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0073] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

1. A round plug terminal continuous die, characterized in that: The continuous mold is applied to the production of a round plug terminal (100), which comprises: The connecting part (101) is a plate structure with a through hole formed thereon; The wire clamping part (102) is arranged in a "U"-shaped structure, wherein the middle part is connected to the edge of one side of the plate body of the connecting part (101), and the opening direction thereof is parallel to the axial direction of the through hole of the connecting part (101); The plug-in column portion (103) is arranged on a side of the clamping portion (102) away from the connecting portion (101), and is a cylindrical body as a whole. One end of the plug-in column portion (103) away from the clamping portion (102) is a ball head; The continuous die comprises an upper die (210) and a lower die (220), a conveying system for conveying a material belt is arranged between the upper die (210) and the lower die (220), and the upper die (210) and the lower die (220) are provided with: The knife-edge station group is used to cut the workpiece on the material strip; The forming station group comprises a bending station, a curling station and a piercing station, and is used for forming the wire clamping part (102) and the column inserting part (103).

2. The round plug terminal continuous die according to claim 1, characterized in that: The knife edge station group includes: The first cutting edge station (1) comprises two symmetrically arranged first cutting edges, the first cutting edges can cut both sides of the wire clamping part (102), and a distance is left between the first cutting edges and the side edges of the wire clamping part (102).

3. The round plug terminal continuous die according to claim 2, characterized in that: Taking the conveying direction of the material belt in the working state as the front side, the forming station group also includes: The embossing station (2) is arranged in front of the first cutting station (1). The embossing station (2) comprises a embossing head, which is provided with a plurality of transverse strip-shaped protrusions. The embossing station (2) can form a rib structure on the workpiece of the material strip.

4. The round plug terminal continuous die according to claim 3, characterized in that: The knife edge station group also includes: A plurality of second cutting stations (3) are arranged in front of the rib pressing station (2). The second cutting stations (3) are arranged in sequence to cut the corresponding connecting portion (101), the clamping portion (102), and the column inserting portion (103) of the workpiece.

5. The round plug terminal continuous die according to claim 4, characterized in that: The second cutting station (3) comprises: An end blanking station (31) is provided for blanking the end of the column inserting portion (103); the upper die blade of the end blanking station (31) is concave, and an arc-shaped protrusion is provided in the concave portion.

6. The round plug terminal continuous die according to claim 5, characterized in that: The end blanking station (31) is provided with an anti-chip jumping structure capable of preventing waste from bouncing back, and the anti-chip jumping structure is arranged on the lower die blade; The anti-chip jumping structure is a notch provided on the lower die blade, the notch corresponds to the arc-shaped protrusion, and the concave part in the middle of the notch is an inclined inner wall.

7. The round plug terminal continuous die according to claim 6, characterized in that: The molding station group also includes: The molding station (4) has a lower die cutting edge provided with a columnar protrusion corresponding to the inner cavity of the plug column, and an upper die cutting edge provided with an arc-shaped groove corresponding to the outer diameter of the plug column.

8. The round plug terminal continuous die according to claim 7, characterized in that: The molding station group also includes: The puncturing station (5) is arranged at the front side of the forming station (4), and there are two puncturing stations (5), including: A first piercing station is used to open a first opening in the middle of the workpiece corresponding to the wire clamping portion (102); A second piercing station is used to symmetrically open second openings on both sides of the first opening corresponding to the clamping portion (102) of the workpiece; The first opening and the second opening both form a semi-conical opening structure on the wire clamping portion (102).

9. The round plug terminal continuous die according to claim 8, characterized in that: The forming station group also includes a plurality of bending stations and rolling stations, which are arranged in front of the piercing station (5) and can bend the wire clamping part (102) and roll the column inserting part (103).

10. The round plug terminal continuous die according to claim 9, characterized in that: The curling station includes: The column inserting and rolling station (6) is arranged at the molding station group near the material strip discharge end. The column inserting and rolling station (6) is arranged corresponding to the column inserting part (103) and can roll the column inserting part (103). The column inserting and rolling station (6) includes two symmetrically arranged swing blocks (61). The two swing blocks (61) are respectively provided with a rotating shaft at an opposite corner. The rotating shaft is connected to the external structure, and the swing blocks (61) are rotatably connected to the rotating shaft. The opposite sides of the two swing blocks (61) are respectively provided with arc grooves corresponding to the column body of the column inserting part (103).

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