Coaxiality positioning electric connector contact element automatic crimping device

Abstract

The invention provides an automatic crimping device for a coaxial positioning electric connector contact element. The automatic crimping device comprises a front mounting block, a rear mounting block, a four-way centering pressing die and a rear telescopic rod, a four-way centering pressing die is arranged between the front mounting block and the rear mounting block, and the rear telescopic rod is mounted on the rear mounting block and moves back and forth in the direction from the rear mounting block to the front mounting block; the four-way centering pressing die comprises a plurality of pressing dies, and the pressing dies are allowed to vertically move towards the axial lead direction of the rear telescopic rod; in order to solve the problems that an existing manual crimping tool is unstable in force application and has no coaxial positioning function, the automatic crimping device for the contact element of the coaxial positioning electric connector is designed, and the automatic crimping device is stable in force application and has the coaxial positioning function, so that the crimped contact element keeps good coaxiality, and the production efficiency is improved. And the crimping quality of the coaxial connector contact element is greatly improved.

Description

Technical Field

[0001] The invention relates to the field of connector crimping devices, in particular to an automatic crimping device for coaxially positioning electrical connector contacts. Background Art

[0002] DK / SK621 coaxial connector is a common product in the aerospace field, mainly used for the transmission of 1553B communication signals. Traditional DK / SK621 coaxial connector is a welding type connector, but due to frequent quality problems, this series of products is being changed from welding type to crimping type in large quantities, but there is little research on the corresponding assembly equipment.

[0003] The traditional device used for crimping DK / SK621 coaxial connectors is a manual crimping device. When crimping the connector, one hand applies force to the crimping pliers and the other hand fixes the contact in the die. The force is unstable and there is no coaxial positioning function, which can easily cause the contact to be skewed after crimping. In addition, coaxial connectors are sensitive to coaxiality indicators. In actual applications, connectors are often damaged due to eccentricity of the contact.

[0004] In order to improve the crimping quality of coaxial connector contacts and ensure the coaxiality of the contacts after crimping, it is necessary to design an automatic crimping device with stable force and coaxial positioning function. Summary of the invention

[0005] In view of the defects in the prior art, an object of the present invention is to provide an automatic crimping device for coaxially positioning electrical connector contacts.

[0006] According to the present invention, a coaxial positioning electric connector contact automatic crimping device is provided, comprising: a front mounting block, a rear mounting block, a four-way centering die and a rear telescopic rod;

[0007] A four-way centering die is provided between the front mounting block and the rear mounting block, and the rear telescopic rod is installed on the rear mounting block and moves back and forth in a direction from the rear mounting block toward the front mounting block;

[0008] The four-way centering die includes a plurality of dies, and the dies are allowed to move vertically toward the axis of the rear telescopic rod;

[0009] The contact of the coaxial connector is inserted from the axial center position of the front mounting block along the axial direction of the rear telescopic rod and then engaged by the rear telescopic rod. The pressing die moves toward the contact and presses the contact to form an indentation.

[0010] Preferably, a cavity is formed between the rear mounting block and the front mounting block, and the die slides along the cavity.

[0011] Preferably, a first through hole is arranged in the middle of the front mounting block, an inlet is arranged at one end of the front mounting block facing away from the rear mounting block, the inlet is connected to the first through hole, a first limiting step is arranged between the inlet and the first through hole, and the first limiting step is adapted to the shape of the insulating sleeve of the contact piece.

[0012] Preferably, the rear mounting block is provided with a second through hole, the rear telescopic rod moves axially along the second through hole, and the second through hole is connected to the first through hole.

[0013] Preferably, the first through hole, the second through hole and the rear telescopic rod are coaxial.

[0014] Preferably, the four-way centering die comprises four dies, and the front ends of the four die ends act on the contact piece from four directions of up, down, left and right around the contact piece respectively.

[0015] Preferably, an opening for engaging the contact piece is provided at the axis of one end of the rear telescopic rod toward the front mounting block, and a second limiting step is provided inside the opening, and the second limiting step is adapted to the shape of one end of the contact piece.

[0016] Preferably, a spring is provided between the die and the inner wall of the cavity, and the die is reset by the spring.

[0017] Preferably, a calibration ejector pin which matches the shape of the contact piece is provided, one end of the calibration ejector pin is a calibration needle, and the length and shape of the calibration needle match the contact piece.

[0018] Preferably, the front mounting block, the rear mounting block, the rear telescopic rod and the calibration ejector pin are made of stainless steel and the surfaces are treated for corrosion resistance, and the four-way centering die is made of steel and the surfaces are treated for friction resistance and corrosion resistance.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] In order to solve the problem that current manual crimping tools have unstable force and no coaxial positioning function, this application designs an automatic crimping device for electrical connector contacts with coaxial positioning. The automatic crimping device has stable force application and coaxial positioning function, so that the contacts after crimping maintain good coaxiality, greatly improving the crimping quality of the coaxial connector contacts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1 is a cross-sectional view of a crimping device;

[0023] Figure 2 This is a schematic diagram of the front installation block structure;

[0024] Figure 3 It is a schematic diagram of the structure of the four-way centering die;

[0025] Figure 4 It is a schematic diagram of the overall structure of the crimping device;

[0026] Figure 5 This is a schematic diagram of the calibration ejector structure;

[0027] As shown in the figure:

[0028] DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0030] Example 1

[0031] like Figure 1 As shown, this embodiment includes: a front mounting block 1, a rear mounting block 2, a four-way centering die 3 and a rear telescopic rod 4; a four-way centering die 3 is arranged between the front mounting block 1 and the rear mounting block 2, and the rear telescopic rod 4 is installed on the rear mounting block 2 and moves back and forth in the direction from the rear mounting block 2 to the front mounting block 1; the four-way centering die 3 includes a plurality of dies 31, and the dies 31 are allowed to move vertically toward the axis of the rear telescopic rod 4 under the action of the driving device; the contact of the coaxial connector is inserted from the axis position of the front mounting block 1 along the axial direction of the rear telescopic rod 4 and then engaged through the rear telescopic rod 4, and the die 31 moves toward the contact and squeezes the contact to form an indentation. The rear telescopic rod 4 is provided with an opening for engaging the contact toward the axis of one end of the front mounting block 1, and a second limiting step 41 is provided inside the opening, and the second limiting step 41 is adapted to the shape of one end of the contact.

[0032] In one embodiment, the driving device includes a cylinder drive, a motor drive, etc. The movement of the rear telescopic rod 4 can also be achieved by the driving device.

[0033] like Figure 2As shown, a first through hole is provided in the middle of the front mounting block 1, and an inlet 11 is provided at one end of the front mounting block 1 facing away from the rear mounting block 2, the inlet 11 is connected to the first through hole, a first limiting step 12 is provided between the inlet 11 and the first through hole, and the first limiting step 12 is adapted to the shape of the contact insulating sleeve. A second through hole is provided on the rear mounting block 2, and the rear telescopic rod 4 moves axially along the second through hole, and the second through hole is connected to the first through hole. The first through hole, the second through hole and the rear telescopic rod 4 are coaxial.

[0034] like Figure 3 As shown, a cavity 121 is formed between the rear mounting block 2 and the front mounting block 1, and the die 31 slides along the cavity 121. The four-way centering die 3 includes four dies 31, and the die front ends 311 at the ends of the four dies 31 act on the contact piece from the four directions of the upper, lower, left and right sides of the contact piece. A spring 5 is arranged between the die 31 and the inner wall of the cavity 121, and the die 31 is reset by the spring 5.

[0035] like Figure 4-5 As shown, a calibration pin 6 matching the shape of the contact piece is provided, one end of the calibration pin 6 is a calibration needle 61, and the length and shape of the calibration needle 61 match the contact piece.

[0036] In one embodiment, the front mounting block 1, the rear mounting block 2, the rear telescopic rod 4 and the calibration ejector pin 6 are made of stainless steel and the surface is treated for corrosion resistance, and the four-way centering die 3 is made of steel and the surface is treated for friction resistance and corrosion resistance.

[0037] Example 2

[0038] Example 2 is a preferred example of Example 1.

[0039] like Figure 1 As shown, the coaxial positioning electric connector contact automatic crimping device comprises: a front mounting block 1, a rear mounting block 2, a four-way centering die 3 and a rear telescopic rod 4; the front mounting block 1 is fixed on the rear mounting block 2; the rear telescopic rod 4 is located directly behind the center point of the four-way centering die 3.

[0040] In one embodiment, a second limiting step 41 is provided in the rear telescopic rod 4 , and the second limiting step 41 matches the size of the contact piece.

[0041] like Figure 2 As shown, the front mounting block 1 is provided with an extension opening 11 , and the extension opening 11 is provided with a first limiting step 12 .

[0042] In one embodiment, the first limiting step 12 matches the size of the insulating sleeve of the contact, and the insulating sleeve is located at an end of the contact facing away from the rear mounting block 2 .

[0043] like Figure 3As shown, a cavity 121 is provided between the front mounting block 1 and the rear mounting block 2, and the cavity 121 is formed by the groove portion of the end face of the rear mounting block 2 and the rear mounting block 2. There are four cavities 121 in total, and the cavity 121 extends all the way to the center of the protruding portion of the rear mounting block 2; the four-way centering die 3 includes four identical independent dies 31; the independent dies 31 are respectively installed in a cavity 121, and the independent dies 31 can be moved up and down in alignment; two springs 5 ​​are installed on the independent die 31, and the springs 5 ​​are located between the die 31 and the inner wall of the cavity 121, that is, between the die 31 and the middle protruding portion of the rear mounting block 2. After the crimping is completed, the independent die 31 is retracted under the action of the elastic force; the independent die 31 crimps the contact piece in a straight line in the direction of the crimping force, and the pressure accuracy is high.

[0044] like Figure 4 As shown, the calibration ejector pin 6 is inserted through the insertion opening 11 for calibration.

[0045] like Figure 5 As shown, the calibration pin 61 at the front end of the calibration pin 6 matches the length of the contact piece. The pin top 62 of the calibration pin 6 cooperates with the rear telescopic rod 4, and the front end 311 of the die is attached to the peripheral side of the calibration pin 61, which can ensure that the crimping position meets the requirements. The calibration pin 61 has a variety of specifications and can be customized according to needs.

[0046] In one embodiment, the front mounting block 1, the rear mounting block 2, the rear telescopic rod 4, and the calibration ejector pin 5 are all made of stainless steel, and the surface is treated for corrosion resistance; the four-way centering die 3 is made of high-strength and high-hardness steel, and the surface is treated for friction resistance and corrosion resistance.

[0047] The working principle of the coaxial positioning automatic crimping device for electrical connector contacts in this embodiment is:

[0048] The contact of the coaxial connector is placed in the crimping device through the extension port 11. After the automatic crimping device is started, the rear telescopic rod 4 bites the contact so that the contact is located in the exact center position, and the first limit step 12 and the second limit step 41 are used to double-limit the contact so that the contact maintains good coaxiality; the rear telescopic rod 4 bites the contact and moves backward so that the crimping position of the contact is aligned with the four-way centering die 3; the four-way centering die 3 moves toward the center point at the same time to squeeze the contact to form an indentation; after the crimping is completed, the automatic crimping device stops working, that is, the driving device no longer acts on the die 31, and the four-way centering die 3 automatically retreats under the action of the spring 5; the rear telescopic rod 4 moves the contact forward to the original position, releases the bite, and takes out the contact from the extension port 11 to complete the crimping.

[0049] In summary, in view of the problem that the current manual crimping tools have unstable force and no coaxial positioning function, this embodiment designs an automatic crimping device for coaxial positioning of electrical connector contacts. The crimping device effectively ensures stable force during the crimping process by setting the pressure value, crimping stroke, and crimping rate; the device has a first limiting step 12 at the inlet 11, and a second limiting step 41 is provided in the rear telescopic rod 4, so that the contact maintains good coaxiality during the crimping process, greatly improving the crimping quality of the coaxial connector contact.

[0050] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0051] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A coaxial positioning electrical connector contact automatic crimping device, characterized in that: include: A front mounting block (1), a rear mounting block (2), a four-way centering die (3) and a rear telescopic rod (4); A four-way centering die (3) is provided between the front mounting block (1) and the rear mounting block (2); the rear telescopic rod (4) is mounted on the rear mounting block (2) and moves back and forth in a direction from the rear mounting block (2) toward the front mounting block (1); The four-way centering die (3) comprises a plurality of dies (31), and the dies (31) are allowed to move vertically toward the axis center line direction of the rear telescopic rod (4) under the action of a driving device; The contact piece of the coaxial connector is inserted axially from the axial center position of the front mounting block (1) along the rear telescopic rod (4) and then engaged by the rear telescopic rod (4), and the pressing die (31) moves toward the contact piece and presses the contact piece to form an indentation.

2. The coaxial positioning electrical connector contact automatic crimping device according to claim 1, characterized in that: A cavity (121) is formed between the rear mounting block (2) and the front mounting block (1), and the pressing mold (31) slides along the cavity (121).

3. The coaxial positioning automatic crimping device for electrical connector contacts according to claim 1, characterized in that: A first through hole is arranged in the middle of the front mounting block (1); an extension opening (11) is arranged at one end of the front mounting block (1) which is away from the rear mounting block (2); the extension opening (11) is connected to the first through hole; a first limiting step (12) is arranged between the extension opening (11) and the first through hole; the first limiting step (12) is adapted to the shape of the contact piece insulating sleeve.

4. The coaxial positioning electrical connector contact automatic crimping device according to claim 3, characterized in that: The rear mounting block (2) is provided with a second through hole, the rear telescopic rod (4) moves axially along the second through hole, and the second through hole is connected to the first through hole.

5. The coaxial positioning automatic crimping device for electrical connector contacts according to claim 4, characterized in that: The first through hole, the second through hole and the rear telescopic rod (4) are coaxial.

6. The coaxial positioning electrical connector contact automatic crimping device according to claim 1, characterized in that: The four-way centering die (3) comprises four dies (31), and die front ends (311) at the ends of the four dies (31) act on the contact piece from four directions, namely, up, down, left, and right, around the contact piece.

7. The coaxial positioning electrical connector contact automatic crimping device according to claim 1, characterized in that: An opening for engaging the contact piece is arranged at the axis of one end of the rear telescopic rod (4) facing the front mounting block (1), and a second limiting step (41) is arranged inside the opening, and the second limiting step (41) is adapted to the shape of one end of the contact piece.

8. The coaxial positioning electrical connector contact automatic crimping device according to claim 2, characterized in that: A spring (5) is provided between the pressing die (31) and the inner wall of the cavity (121), and the pressing die (31) is reset by the spring (5).

9. The coaxial positioning electrical connector contact automatic crimping device according to claim 1, characterized in that: A calibration ejector pin (6) matching the shape of the contact piece is provided, one end of the calibration ejector pin (6) is a calibration needle (61), and the length and shape of the calibration needle (61) are matching the contact piece.

10. The coaxial positioning electrical connector contact automatic crimping device according to claim 9, characterized in that: The front mounting block (1), the rear mounting block (2), the rear telescopic rod (4) and the calibration ejector pin (6) are made of stainless steel and their surfaces are treated for corrosion resistance, and the four-way centering die (3) is made of steel and its surface is treated for friction resistance and corrosion resistance.

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