One-time press-fit forming equipment for plug-in wiring terminal

Abstract

The invention relates to the technical field of wiring terminal production equipment, and provides plugging wiring terminal one-time press-fit forming equipment which comprises a lifting seat, a pair of molds are symmetrically arranged in the lifting seat, and a mold rod is arranged above the middle of the two molds and used for being matched with a mold cavity formed between the two molds. The press-fitting device overcomes the defects in the prior art, is reasonable in design and compact in structure, completes press-fitting from a plane blank to a cylindrical shape at a time through cooperative movement of the die and the die rod, shortens the manufacturing process, reduces the equipment cost and improves the production efficiency. The design of the die gap enables the end part of the wiring terminal to retain a partial arc-shaped structure, thereby facilitating the subsequent wiring harness connection, and improving the product functionality. The die is driven by the lifting seat to move up and down, so that the wiring terminal formed at a time cannot be separated from a material belt, the continuity of subsequent processing of the wiring terminal is ensured, and subsequent processing is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of terminal production equipment, in particular to a one-time compression molding equipment for plug-in terminal. BACKGROUND

[0002] At present, the industry generally adopts a stamping molding process based on metal plates to produce plug-in terminals. First, the metal coiled material (such as copper alloy, copper plate, etc.) is cut into plane blanks with specific shapes and sizes by a precision stamping equipment. These blanks are usually still connected to a continuous material belt to form a so-called "material belt" for continuous transmission in the stamping die. In the material belt state, the plane blank is preliminarily processed through a series of stamping processes to form the basic plane structure features required by the terminal. In order to finally shape the plane terminal blank into the required cylindrical structure (usually used to accommodate wires or cooperate with the opposite plug), multiple and step-by-step bending operations are required when the plane blank is in the plane material belt state. Each bending usually corresponds to an independent stamping station or process, and the straight plate is gradually bent into a folded edge close to 90 degrees or a specific angle. Finally, the closed molding of the cylindrical structure is completed through multiple bending processes. After all the plane and bending processes are completed, the single molded terminal is cut off and separated from the material belt.

[0003] The prior art plug-in terminal with a cylindrical structure requires multiple and step-by-step bending operations. Each additional bending process means an additional stamping station, a die action, and corresponding material belt transmission and positioning time, which significantly prolongs the production cycle of a single terminal, limits the overall production efficiency, and requires the design and manufacture of a progressive die with complex structure and numerous stations. The die has high manufacturing precision requirements, long cycle, huge cost, and occupies more equipment space. Therefore, we propose a one-time compression molding equipment for plug-in terminals. SUMMARY

[0004] In view of the shortcomings of the prior art, the present application provides a one-time compression molding equipment for plug-in terminals, which overcomes the shortcomings of the prior art, has a reasonable design, a compact structure, and solves the problem that the existing cylindrical structure terminal cannot be molded at one time.

[0005] To achieve the above purpose, the present application realizes the following technical scheme: a one-time compression molding equipment for plug-in terminals, comprising a lifting seat, a pair of molds is symmetrically arranged inside the lifting seat, a mold rod is arranged above the middle of the two molds for cooperating with the mold cavity formed between the two molds;

[0006] The distance between the two upper parts of the molds is greater than the mold rod, so that when the lifting seat drives the pair of molds to move upward, the mold rod enters the mold cavity formed by the two molds to press the flat blank into an arc-shaped terminal;

[0007] The contact surface between the lower part of the mold and the lifting seat is an arc surface, so that after the bottom of the mold cavity of the two molds is pressed, the top of the mold cavity moves towards each other to extrude the top of the arc-shaped terminal on the outer wall of the mold rod to form a cylindrical structure;

[0008] The bottoms of the two molds are jointly provided with an elastic expansion component, so that the two molds return to the initial state when they are not under stress;

[0009] One end of the mold is provided with a notch at the top of the mold cavity, so that when the top of the two molds moves towards each other, the arc-shaped structure of the terminal at this position is retained.

[0010] Preferably, a pair of pressing plates are provided on the lifting seat, and the pair of pressing plates are arranged on the opposite sides of the two molds, and the relative height of the top of the pressing plate is higher than the relative height of the top of the mold, so that when the lifting seat moves upward, the bottom of the flat terminal is extruded on both sides.

[0011] Preferably, a connecting rod is provided on the lifting seat, and one end of the connecting rod away from the lifting seat is rotationally connected with the mold for limiting the rotation direction of the mold.

[0012] Preferably, slopes are provided on the top of the opposite sides of the two molds, and the distance between the two slopes gradually decreases from top to bottom, so as to avoid the top of the two molds from abutting against each other when the two molds rotate relative to each other.

[0013] Preferably, the elastic expansion component includes a support plate abutting against the bottom of the mold, the bottom of the support plate is provided with a plurality of support rods penetrating through the lifting seat, the bottoms of the plurality of support rods are jointly connected with a connecting plate, and the top of the connecting plate is connected with the bottom of the lifting seat through a spring.

[0014] Preferably, the bottom of the lifting seat is provided with a base, the base is provided with a first air cylinder, and the output end of the first air cylinder is connected with the bottom of the lifting seat.

[0015] Preferably, guide rods are provided on both sides of the base, and guide grooves are formed on both sides of the lifting seat for inserting the guide rods.

[0016] Preferably, a support frame is provided on the top of the base, the support frame is provided with a second air cylinder, the output end of the second air cylinder is connected with a push plate, the push plate is connected with one side of the mold rod penetrating through the support frame, and a sleeve is provided on the support frame and is sleeved on the outer wall of the mold rod.

[0017] Preferably, the front end of the mold rod exceeds the mold, and a pressing block is arranged on the support frame, and the bottom of the pressing block abuts against the top of the front end of the mold rod exceeding the mold.

[0018] Preferably, the pressing block is rotationally connected to the support frame, and a limiting block connected to the support frame is arranged on the rear side of the pressing block.

[0019] The application provides a one-time compression molding equipment for a plug-in wiring terminal.

[0020] 1. The compression of the flat blank to the cylindrical shape is completed at one time through the coordinated movement of the mold and the mold rod, the manufacturing process is shortened, the equipment cost is reduced, and the production efficiency is improved.

[0021] 2. The design of the lower arc surface of the mold enables the top of the mold cavity to move towards each other after the bottom is pressed, extrudes the top of the wiring terminal to accurately form, and the design of the notch enables the end of the wiring terminal to retain part of the arc structure to facilitate the subsequent connection of the wire harness, and improves the functionality of the product.

[0022] 3. The lifting seat drives the mold to move up and down, so that the one-time molded wiring terminal does not separate from the material belt, ensuring the continuity of subsequent processing of the wiring terminal, and facilitating subsequent processing. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a front perspective view of the overall structure of the application;

[0024] Figure 2 It is a back perspective view of the overall structure of the application;

[0025] Figure 3 It is a front plan view of the overall structure of the application;

[0026] Figure 4 It is a schematic view of the overall structure of the application after the push rod enters the mold cavity;

[0027] Figure 5 It is a perspective view of the lifting seat structure of the application.

[0028] In the figure: 1, lifting seat; 11, pressing plate; 12, connecting rod; 13, guide groove; 2, mold; 21, notch; 22, slope; 3, mold rod; 41, support plate; 42, support rod; 43, connecting plate; 44, spring; 5, base; 6, first cylinder; 7, guide rod; 8, support frame; 81, second cylinder; 82, push plate; 83, sleeve; 84, pressing block; 85, limiting block. DETAILED DESCRIPTION

[0029] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0030] Referring to the drawings Figures 1-5 A one-time compression molding device for a plug-in terminal includes a base 5 and a lifting seat 1 arranged thereon, a first cylinder 6 is arranged on the base 5, and the output end of the first cylinder 6 is connected with the bottom of the lifting seat 1 to drive the lifting seat 1 to move in the vertical direction. Specifically, guide grooves 13 are arranged on both sides of the lifting seat 1, and the guide grooves 13 are in sliding fit with guide rods 7 arranged on both sides of the base 5, so as to ensure the stability of the vertical lifting of the lifting seat 1.

[0031] A pair of molds 2 are symmetrically arranged in the interior of the lifting seat 1, a mold rod 3 is arranged above the two molds 2, the distance between the upper portions of the two molds 2 is greater than the diameter of the mold rod 3, and the lifting seat 1 drives the pair of molds 2 to move upward, so that the mold rod 3 relatively enters into the mold cavity formed by the pair of molds 2, to preliminarily compress the planar blank into an arc-shaped structure terminal. The specific manufacturing process of the planar blank belongs to the prior art, and will not be described in detail in the present application.

[0032] The contact surface of the lower corner of the mold 2 with the lifting seat 1 is an arc surface, and the lifting seat 1 is provided with an arc surface matched with the lower corner of the mold 2. The distance between the bottom portions of the mold cavities of the two molds 2 is less than the diameter of the mold rod 3. When the blank is compressed, the mold rod 3 moves downward relative to the mold 2 until it is extruded to the bottom portions of the mold cavities of the two molds 2 through the blank. After the bottom portions of the mold cavities of the two molds 2 are pressed, the top portions thereof move toward each other to extrude the top portions of the arc-shaped terminals on the outer wall of the mold rod 3 to make them fit together to form a cylindrical structure, thereby completing one-time molding of the terminal, shortening the manufacturing process, improving the production efficiency, and reducing the equipment cost.

[0033] The bottom portions of the two molds 2 are commonly provided with an elastic expansion component, so that the two molds 2 return to the initial state after being not stressed. Specifically, the elastic expansion component includes a support plate 41 abutting against the bottom portion of the mold 2, the bottom portion of the support plate 41 is provided with a plurality of support rods 42 penetrating through the lifting seat 1, the bottom portions of the plurality of support rods 42 are commonly connected with a connecting plate 43, and the top portion of the connecting plate 43 is connected with the bottom portion of the lifting seat 1 through a spring 44. When the mold 2 moves downward under the pressure, the spring 44 is compressed. When the pressure disappears, the mold 2 returns to the initial position through the action of the connecting plate 43, the support rod 42 and the support plate 41 under the elastic force of the spring 44, so as to prepare for the next compression operation.

[0034] One end of the mold 2 is provided with a notch 21 at the top of the mold cavity, and when the two molds 2 move towards each other, the notch 21 can retain the arc structure of the terminal at this position, facilitating the subsequent connection of the wire harness, and ensuring that the finally formed terminal meets the requirements.

[0035] The lifting seat 1 is provided with a pair of pressing plates 11, which are arranged on the opposite sides of the two molds 2, and the top of the pressing plate 11 is higher than the top of the mold 2. When the lifting seat 1 rises, the pressing plate 11 first contacts the bottom of the flat blank on both sides, and cooperates with the mold rod 3 abutting the top of the blank, so that the two sides of the flat blank are bent inward, and then enters the mold cavity of the two molds 2 for pressing, which helps to improve the stability of the terminal pressing.

[0036] As an optimization structure, the lifting seat 1 is provided with a connecting rod 12, one end of the connecting rod 12 away from the lifting seat 1 is rotatably connected with the mold 2, only allowing the mold 2 to rotate along the preset arc surface, preventing the mold 2 from shifting laterally, and helping to improve the pressing accuracy.

[0037] As an optimization structure, slopes 22 are provided on the top of the opposite sides of the two molds 2, and the distance between the two slopes 22 gradually decreases from top to bottom, which can avoid the top of the two molds 2 from abutting each other when they rotate relative to each other, and ensure the smoothness of the mold 2 during movement.

[0038] The top of the base 5 is provided with a support frame 8, the support frame 8 is provided with a second air cylinder 81, the output end of the second air cylinder 81 is connected with a push plate 82, the push plate 82 is connected with the mold rod 3 penetrating one side of the support frame 8, when the terminal pressing is completed, the lifting seat 1 drives the mold 2 to reset downward, and then the second air cylinder 81 is started, at this time the push plate 82 drives the mold rod 3 to separate from the cylindrical terminal, in this process the support frame 8 abuts against one end of the cylindrical terminal to make the mold rod 3 smoothly separate from the terminal, and the formed terminal and the material belt will not separate, then the material belt drives the pressed terminal to move to the next position, ensuring the continuity of the material belt movement, facilitating the subsequent processing of the pressed terminal.

[0039] As an optimization structure, a sleeve 83 is provided on the support frame 8, which is sleeved on the outer wall of the mold rod 3, and is arranged along the movement direction of the mold rod 3, which can ensure the stability of the mold rod 3 during horizontal movement.

[0040] The front end of the mold rod 3 exceeds the mold 2, a pressing block 84 is arranged on the support frame 8, the bottom of the pressing block 84 abuts against the top of the front end of the mold rod 3 exceeding the mold 2, and the pressing block 84 is pressed on the front end of the mold rod 3 to support and position it, so that the both ends are stable when the mold is closed, avoiding the upward tilting of one end of the mold rod 3 during long-term use, which reduces the forming precision of the terminal.

[0041] The pressing block 84 is rotationally connected to the support frame 8, and the mold rod 3 is detachably connected to the push plate 82, such as threaded connection. When the mold rod 3 needs to be replaced, the pressing block 84 is rotated upward, and then the mold rod 3 connected to the push plate 82 is detached. The rear side of the pressing block 84 is provided with a limiting block 85 connected to the support frame 8, which can limit the rotation direction of the pressing block 84, so as to ensure the stability of the support of the mold rod 3.

[0042] Working principle: the material belt with plane blank is arranged between the mold 2 and the mold rod 3. When working, the first cylinder 6 is started to drive the lifting seat 1 to vertically rise along the guide rod 7. During the process, the pressing plate 11 on the lifting seat 1 first contacts the bottom of the blank on both sides, and cooperates with the mold rod 3 to preliminarily extrude the blank, so that the plane blank on both sides is bent inward.

[0043] With the continuous rising of the lifting seat 1, the mold rod 3 enters the mold cavity of the two molds 2. At this time, the blank forms an arc structure through the cooperation of the mold cavity and the mold rod 3.

[0044] With the continuous rising of the lifting seat 1, the mold rod 3 extrudes the bottom of the mold cavity of the two molds 2 through the bottom of the arc-shaped terminal of the arc-shaped structure, so that the top of the two molds 2 moves towards each other and extrudes the top of the arc-shaped terminal, so that the arc-shaped terminal is combined to form a cylindrical terminal. Through the design of the gap 21, one end of the formed terminal is reserved with part of the arc-shaped structure, which is convenient for subsequent wire harness connection.

[0045] After the pressing is completed, the first cylinder 6 drives the lifting seat 1 to move downward, and the mold 2 moves downward and is no longer subjected to pressure, and gradually returns to the original position under the action of the spring 44. Then the second cylinder 81 is started, and drives the mold rod 3 to separate from the formed terminal. The formed terminal will not be separated from the material belt, which is convenient for subsequent processing of the terminal.

[0046] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0047] The above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced by equivalent features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A one-time pressing and forming device for plug-in terminal blocks, characterized in that: It comprises a lifting seat (1), a pair of molds (2) are symmetrically arranged inside the lifting seat (1), and a mold rod (3) is provided above the middle of the two molds (2) for matching the mold cavity formed between the two molds (2); The distance between the upper portions of the two molds (2) is greater than the diameter of the mold rod (3), so that when the lifting seat (1) drives the pair of molds (2) to move upward, the mold rod (3) enters the mold cavity formed by the two molds (2) to press the flat blank into an arc-shaped terminal; The contact surface between the lower portion of the mold (2) and the lifting seat (1) is an arc surface, so that the tops of the mold cavities of the two sides of the mold (2) move toward each other after the bottoms are pressurized, thereby squeezing the tops of the arc-shaped connecting terminals on the outer wall of the mold rod (3) to form a cylindrical structure; The bottoms of the two molds (2) are jointly provided with an elastic telescopic component so that the two molds (2) can return to their initial state after being free of stress; One end of the mold (2) is provided with a notch (21) at the top of its mold cavity, so as to retain the arc-shaped structure of the terminal at that position when the tops of the two molds (2) move toward each other.

2. The one-time pressing and forming device for plug-in terminal blocks according to claim 1, characterized in that: A pair of pressing plates (11) are provided on the lifting seat (1), and the pair of pressing plates (11) are respectively provided on opposite sides of the two molds (2), and the relative height of the top of the pressing plates (11) is higher than the relative height of the top of the mold (2), so as to squeeze the two sides of the bottom of the flat terminal when the lifting seat (1) moves upward.

3. The one-time pressing and forming device for plug-in terminal blocks according to claim 1, characterized in that: A connecting rod (12) is provided on the lifting seat (1), and one end of the connecting rod (12) away from the lifting seat (1) is rotatably connected to the mold (2) and is used to limit the rotation direction of the mold (2).

4. The one-time pressing and forming device for plug-in terminal blocks according to claim 1, characterized in that: Slopes (22) are provided on the tops of the opposite sides of the two molds (2), and the distance between the two slopes (22) gradually decreases from top to bottom to prevent the tops of the two molds (2) from abutting against each other when the two molds (2) rotate relative to each other.

5. The one-time pressing and forming device for plug-in terminal blocks according to claim 1, characterized in that: The elastic telescopic component includes a support plate (41) abutting against the bottom of the mold (2); a plurality of support rods (42) penetrating the lifting seat (1) are provided at the bottom of the support plate (41); the bottoms of the plurality of support rods (42) are commonly connected to a connecting plate (43); a spring (44) is connected between the top of the connecting plate (43) and the bottom of the lifting seat (1).

6. The one-time pressing and forming device for plug-in terminal blocks according to claim 1, characterized in that: A base (5) is provided at the bottom of the lifting seat (1), a first cylinder (6) is provided on the base (5), and an output end of the first cylinder (6) is connected to the bottom of the lifting seat (1).

7. The one-time pressing and forming device for plug-in terminal blocks according to claim 6, characterized in that: Guide rods (7) are provided on both sides of the base (5), and guide grooves (13) for inserting the guide rods (7) are provided on both sides of the lifting seat (1).

8. The one-time pressing and forming device for plug-in terminal blocks according to claim 6, characterized in that: A support frame (8) is provided on the top of the base (5), a second cylinder (81) is provided on the support frame (8), an output end of the second cylinder (81) is connected to a push plate (82), the push plate (82) is connected to one side of the mold rod (3) passing through the support frame (8), and a sleeve (83) is provided on the support frame (8) and is sleeved on the outer wall of the mold rod (3).

9. The one-time pressing and molding device for plug-in terminal blocks according to claim 8, characterized in that: The front end of the mold rod (3) extends beyond the mold (2), and a pressing block (84) is provided on the support frame (8), wherein the bottom of the pressing block (84) abuts against the top of the end of the mold rod (3) extending beyond the front side of the mold (2).

10. The one-time pressing and molding device for plug-in terminal blocks according to claim 9, characterized in that: The pressing block (84) is rotatably connected to the support frame (8), and a limiting block (85) connected to the support frame (8) is provided on the rear side of the pressing block (84).

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