Cold pressing die for cable wiring terminal

Abstract

The utility model discloses a cable wiring terminal cold pressing die which comprises an upper die and a lower die, the upper die is embedded in an upper die base of a punch press sliding block, the lower die is embedded in a lower die base on a punch press working table top, the upper die and the lower die are of a semicircular columnar structure, an upper die groove is formed in the center of the inner surface of the upper die, and a lower die groove is formed in the center of the inner surface of the lower die. The upper die groove and the lower die groove correspond to each other to form a cold pressing cavity, the cold pressing cavity is matched with the cable wiring terminal and accommodates the wiring terminal, the inner surface of the upper die is provided with a plurality of parallel upper die inserting plates and upper die inserting grooves, and the inner surface of the lower die is provided with a plurality of lower die inserting plates and lower die inserting grooves. According to the utility model, the upper die inserting plate and the upper die inserting groove are mutually inserted, and the lower die inserting groove and the lower die inserting plate are mutually inserted, so that the wiring terminal arranged in the cold pressing cavity is stressed and deformed under the die assembly extrusion of the upper die and the lower die, and is in extrusion connection with a cable inserted in the wiring terminal, the connection strength is high, the connection is firm, and the working efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of cable processing, in particular to a cold pressing die for cable connection terminals with good connection quality and high operating efficiency. Background Art

[0002] When connecting cables or wires of electrical equipment, cold-pressed terminal blocks are widely used due to their simple structure and convenient connection. With the development of electrification, the connection requirements for cables and wires are getting higher and higher. The use of conventional crimping pliers is prone to produce insufficient clamping force and uneven force, resulting in poor assembly quality, insufficient cable connection, low operating efficiency and other shortcomings, which bring certain safety hazards to the normal operation of subsequent equipment. Utility Model Content

[0003] The utility model mainly solves the above-mentioned technical problems and provides a cold pressing die for cable terminal blocks with good connection quality and high operating efficiency.

[0004] In order to solve the above-mentioned technical problems, the present invention mainly adopts the following technical solutions:

[0005] The utility model provides a cold pressing mold for cable terminal blocks, which is placed on a punching machine and is used for cold pressing cables. The cold pressing mold comprises an upper mold and a lower mold, wherein the upper mold is embedded in the upper mold seat of the punching machine slider and moves with the punching machine slider, and the lower mold is embedded in the lower mold seat on the working table of the punching machine. The upper mold and the lower mold are semicircular columnar structures, and the upper mold and the lower mold are combined to form a columnar structure. An upper mold groove extending along the axis of the upper mold and opening on the left and right is provided in the center of the inner surface of the upper mold, and a lower mold groove extending along the axis of the lower mold and opening on the left and right is provided in the center of the inner surface of the lower mold. The upper mold groove and the lower mold groove correspond to each other to form a cold pressing cavity with openings on both ends. The cold pressing cavity matches the above-mentioned cable terminal blocks and accommodates the terminal blocks. A plurality of upper mold plug-ins distributed along the axis of the upper mold and parallel to each other are provided on the inner surface of the upper mold, and an equidistant upper mold is formed between adjacent upper mold plug-ins. The slots are the same as the thickness of the upper die insert plate, and the inner surface of the lower die is provided with a plurality of lower die insert plates distributed along the axis of the lower die and parallel to each other, and an equidistant lower die slot is formed between adjacent lower die insert plates, and the thickness of the lower die insert plate is the same as the slot width of the upper die slot and corresponds to the upper die slot, and the slot width of the lower die slot is the same as the thickness of the upper die insert plate and corresponds to the upper die insert plate, and the upper die insert plate and the upper die slot are respectively plugged into the lower die slot and the lower die insert plate. When the mold is closed, the upper die insert plate of the upper die moves along the lower die slot of the lower die and is inserted into the lower die slot, and the lower die insert plate of the lower die moves along the upper die slot of the upper die and is inserted into the upper die slot, so that the upper die and the lower die are plugged into the joint die, and at the same time, the cable terminal placed in the cold pressing cavity of the mold is deformed under the extrusion of the upper die and the lower die, so that the cable inserted in the terminal is cold-pressed and connected with the terminal, thereby improving work efficiency.

[0006] Preferably, the bottom of the upper die groove is provided with a plurality of upper die convex strips extending along the axis of the upper die and parallel to each other, and the bottom of the lower die groove is provided with a plurality of lower die convex strips extending along the axis of the lower die and parallel to each other. When the upper die and the lower die are closed, the convex strips on the bottom of the groove vertically extrude the outer surface of the cable terminal, thereby increasing the vertical multi-segment extrusion deformation of the cable terminal, forming intermittent concave extrusion pits on the surface of the cable terminal, and improving the cold pressing effect of the terminal and the cable.

[0007] Preferably, the upper die convex strips and the lower die convex strips correspond to each other one by one, and the cross-sections of the upper die convex strips and the lower die convex strips are arc-shaped. The arc-shaped convex strips will not damage the terminal blocks during extrusion, and have good safety.

[0008] Preferably, the tops of the upper die insert plate and the lower die insert plate are in a frustum structure, and the frustum-shaped structure on the top of the insert plate is easily inserted into the corresponding slot, so that the insertion positioning is accurate and the resistance is small.

[0009] Preferably, the bottom height of the upper die groove is greater than the bottom height of the upper die slot, and the bottom height of the lower die groove is greater than the bottom height of the lower die slot. When the cable terminal is squeezed by the convex strip, the deeper slot can be deformed downward at the slot, so that the terminal forms multi-point intermittent extrusion pits, thereby improving the connection strength of the cable in the terminal.

[0010] Preferably, an upper card groove is provided on the outer surface of the upper mold, and the upper card groove corresponds to the positioning marble in the upper mold base and accommodates the positioning marble. A lower card groove is provided on the outer surface of the lower mold, and the lower card groove corresponds to the positioning marble in the lower mold base and accommodates the positioning marble. The card groove facilitates the upper mold or lower mold to be embedded in the upper mold base or the lower mold base for positioning.

[0011] Preferably, the upper mold is provided with positioning steps extending along the axis of the upper mold on both sides of the edge, and the upper mold is embedded and fixed in the mold cavity of the upper mold through the positioning steps. The lower mold is provided with positioning steps extending along the axis of the lower mold on both sides of the edge, and the lower mold is embedded and fixed in the mold cavity of the lower mold through the positioning steps. The positioning steps facilitate the upper mold or the lower mold to be embedded and fixed in the upper mold base or the lower mold base.

[0012] The beneficial effect of the utility model is that the cold pressing mold is mutually plugged and extruded between the upper mold plug-in plate and the upper mold slot on the inner surface of the upper mold and the lower mold slot and the lower mold plug-in plate on the inner surface of the lower mold, so that the wiring terminals built into the cold pressing cavity formed by the upper mold groove and the lower mold groove are deformed by the force under the mold closing and squeezing of the upper mold and the lower mold, and are squeezed and connected with the cables inserted in the wiring terminals, and the convex strips arranged on the bottom surface of the groove can increase the deformation of the outer surface of the wiring terminals, so that the connection strength is large and the connection is firm, and the working efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present utility model.

[0014] Figure 2 yes Figure 1 Schematic diagram of the structure when the mold is closed.

[0015] Figure 3 It is a schematic diagram of the use of the present utility model.

[0016] Figure 4 yes Figure 3 Schematic diagram of the structure during mold closing and cold pressing.

[0017] In the figure, 1. Cable terminal, 2. Upper die, 21. Upper die groove, 22. Upper die insert, 23. Upper die slot, 24. Upper card slot, 3. Lower die, 31. Lower die groove, 32. Lower die insert, 33. Lower die slot, 34. Lower die ridge, 35. Lower card slot, 36. Card position stage, 4. Cold pressing chamber. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be further specifically described below with reference to embodiments and in conjunction with the accompanying drawings.

[0019] Embodiment: A cold pressing die for a cable terminal in this embodiment is placed on a punching machine and is used for cold pressing a cable terminal 1, such as Figure 1 and Figure 2As shown, the cold pressing mold includes an upper mold 2 and a lower mold 3. The upper mold is installed in the upper mold seat of the punch slider and moves up and down with the punch slider. The lower mold is installed in the lower mold seat on the work surface of the punch. The upper mold and the lower mold are semicircular columnar structures. The upper mold and the lower mold are combined to form a columnar structure. The center of the inner surface of the upper mold is designed with an upper mold groove 21 extending along the axis of the upper mold and opening on the left and right. The center of the inner surface of the lower mold is designed with a lower mold groove 31 extending along the axis of the lower mold and opening on the left and right. The upper mold groove and the lower mold groove correspond to each other to form a cold pressing cavity 4 with openings on both ends. The cold pressing cavity is connected to the above-mentioned cable terminal The inner surface of the upper mold is designed to match and accommodate the cable terminal. A plurality of upper mold plug-ins 22 are evenly distributed along the upper mold axis and parallel to each other. An equidistant upper mold slot 23 is formed between adjacent upper mold plug-ins. The slot width of the upper mold slot is the same as the thickness of the upper mold plug-in plate. The inner surface of the lower mold is designed to have a plurality of lower mold plug-ins 32 distributed along the lower mold axis and parallel to each other. An equidistant lower mold slot 33 is formed between adjacent lower mold plug-ins. The thickness of the lower mold plug-in plate is the same as the slot width of the upper mold slot and corresponds to the upper mold slot. The slot width of the lower mold slot is the same as the thickness of the upper mold plug-in plate and corresponds to the upper mold plug-in plate. The top of the upper die insert plate is a frustum structure, and the upper die insert plate and the upper die slot are respectively plugged into and closed with the lower die slot and the lower die insert plate; the bottom height of the upper die groove is greater than the bottom height of the upper die slot, and the bottom height of the lower die groove is greater than the bottom height of the lower die slot. Two upper die convex strips extending along the axis of the upper die and parallel to each other are designed at the bottom of the upper die groove, and two lower die convex strips 34 extending along the axis of the lower die and parallel to each other are designed at the bottom of the lower die groove. The upper die convex strips and the lower die convex strips correspond to each other one by one, and the cross-sections of the upper die convex strips and the lower die convex strips are arc-shaped; a groove bottom of the upper die is designed There is an upper slot 24, which corresponds to the positioning marbles in the upper die seat and accommodates the positioning marbles. The edges of both sides of the upper die are designed with positioning steps extending along the axis of the upper die. The upper die is embedded in the upper die seat through the positioning steps and is positioned in the upper die seat through the cooperation of the upper slot and the positioning marbles. A lower slot 35 is designed on the outer surface of the lower die. The lower slot corresponds to the positioning marbles in the lower die seat and accommodates the positioning marbles. The edges of both sides of the lower die are designed with positioning steps 36 extending along the axis of the lower die. The lower die is embedded in the lower die seat through the positioning steps and is positioned in the lower die seat through the cooperation of the lower slot and the positioning marbles.

[0020] When using, such as Figure 3 and Figure 4As shown, the upper die is inserted and positioned in the upper die seat of the punch slider, and the lower die is inserted and positioned in the lower die seat on the punch work table, and the cold pressing torque value of the cable terminal is adjusted as required, and then the terminal with the cable is placed in the lower die groove, and the punch is turned on to make the punch slider fall, driving the upper die and the lower die to close the mold. At this time, the upper die insert plate is inserted along the lower die slot, and the lower die insert plate is inserted along the upper die slot, so that the height of the cold pressing cavity is reduced to less than the thickness of the cable terminal. The convex strips at the bottom of the upper die groove squeeze the upper surface of the cable terminal, and correspondingly, the convex strips at the bottom of the lower die groove squeeze the bottom surface of the cable terminal, so that the terminal is squeezed and connected with the inserted cable. When the cold pressing torque value is reached, the punch slider stops falling and resets upward, driving the upper die to move upward, preparing for the next cold pressing, taking out the cable terminal, and completing the cold pressing operation of the cable terminal.

[0021] In the description of the present invention, technical terms such as "upper", "lower", "front", "back", "left", "right", "longitudinal", "horizontal", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing and understanding the technical solutions of the present invention. The above description does not limit the present invention, and the present invention is not limited to the examples described above. Any changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should be deemed to be within the scope of protection of the present invention.

Claims

1. A cable terminal cold pressing die, placed on a punch press, for cold pressing a cable terminal (1), characterized in that: The cold pressing die comprises an upper die (2) and a lower die (3), wherein the upper die is embedded in the upper die seat of the punch slide and moves with the punch slide, and the lower die is embedded in the lower die seat on the punch work table, the upper die and the lower die are in a semicircular columnar structure, and the upper die and the lower die are combined to form a columnar structure, an upper die groove (21) extending along the axis of the upper die and opening to the left and right is provided in the center of the inner surface of the upper die, and a lower die groove (31) extending along the axis of the lower die and opening to the left and right is provided in the center of the inner surface of the lower die, the upper die groove and the lower die groove correspond to each other to form a cold pressing cavity (4) with openings at both ends, and the cold pressing cavity is consistent with the above-mentioned cable terminal and accommodates the wiring The terminal comprises a plurality of upper mold inserts (22) distributed along the upper mold axis and parallel to each other, and an equidistant upper mold slot (23) is formed between adjacent upper mold inserts, and the slot width of the upper mold slot is the same as the thickness of the upper mold insert. The inner surface of the lower mold is provided with a plurality of lower mold inserts (32) distributed along the lower mold axis and parallel to each other, and an equidistant lower mold slot (33) is formed between adjacent lower mold inserts, the thickness of the lower mold insert is the same as the slot width of the upper mold slot and corresponds to the upper mold slot, the slot width of the lower mold slot is the same as the thickness of the upper mold insert and corresponds to the upper mold insert, and the upper mold insert and the upper mold slot are respectively plugged into the lower mold slot and the lower mold insert.

2. A cold pressing die for cable terminals according to claim 1, characterized in that: The bottom of the upper die groove (21) is provided with a plurality of upper die convex strips extending along the upper die axis and parallel to each other, and the bottom of the lower die groove (31) is provided with a plurality of lower die convex strips (34) extending along the lower die axis and parallel to each other.

3. A cold pressing die for cable terminals according to claim 2, characterized in that: The upper die convex strip and the lower die convex strip (34) correspond to each other one by one, and the cross sections of the upper die convex strip and the lower die convex strip are arc-shaped.

4. A cold pressing die for cable terminals according to claim 1, 2 or 3, characterized in that: The tops of the upper die inserting plate (22) and the lower die inserting plate (32) are in a frustum structure.

5. A cold pressing die for cable terminals according to claim 4, characterized in that: The bottom height of the upper die groove (21) is greater than the bottom height of the upper die slot (23), and the bottom height of the lower die groove (31) is greater than the bottom height of the lower die slot (33).

6. The cable terminal cold pressing die according to claim 1, characterized in that: An upper retaining groove (24) is provided on the outer surface of the upper die (2), and the upper retaining groove corresponds to the positioning marble in the upper die base and accommodates the positioning marble. A lower retaining groove (35) is provided on the outer surface of the lower die (3), and the lower retaining groove corresponds to the positioning marble in the lower die base and accommodates the positioning marble.

7. The cable terminal cold pressing die according to claim 1, characterized in that: The upper mold (2) is provided with a positioning step extending along the axis of the upper mold on both sides of the edge, and the upper mold is embedded and fixed in the mold cavity of the upper mold through the positioning step. The lower mold (3) is provided with a positioning step (36) extending along the axis of the lower mold on both sides of the edge, and the lower mold is embedded and fixed in the mold cavity of the lower mold through the lower positioning step.

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