Batch accurate wire stripping device and method for fine wires of rectangular connector

Abstract

The invention discloses a batch accurate wire stripping device and method for fine wires of a rectangular connector, the wire stripping device comprises a first fixed arm and a second fixed arm which are hinged to each other, the first fixed arm is provided with a first heatable jaw, and the second fixed arm is provided with a second heatable jaw; heating circuits are embedded in the handles of the first fixed arm and the second fixed arm, and the heating circuits, the first heatable jaw and the second heatable jaw form a closed loop to realize jaw heating; the wire stripping device further comprises a fixed-length control scale arranged on the first fixed arm or the second fixed arm, the fixed-length control scale is parallel to the heatable jaw of the fixed arm where the fixed-length control scale is located, a fixed-length control sliding block is further arranged on the fixed-length control scale, and the wire stripping length is adjusted by changing the position of the fixed-length control sliding block. According to the invention, the stripping efficiency and accuracy of the cable assembly can be effectively improved, and the problems of large size error during batch wire stripping and low efficiency during single wire stripping are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic assembly, and in particular relates to a device and method for accurately stripping fine wires in batches of rectangular connectors. Background Art

[0002] Wire materials commonly used in electronic products often need to be stripped of the outer insulation of the wire during the electronic assembly process to expose the inner conductor for further welding and assembly. The traditional wire stripping method often uses tools such as wire strippers and blades for manual wire stripping. Not only is the efficiency low, but the length and accuracy of the stripping are often uneven. Manual wire stripping relies more on manual operation experience. If the force is not well controlled during stripping, it is often easy to damage the inner conductor of the core wire, reducing the mechanical strength of the cable after assembly.

[0003] Rectangular connectors commonly used in electronic equipment are mostly designed as rectangular connectors with self-contained wires. Their structure is usually 2 to 4 rows, with about 20 wires in each row. There are up to 100 wires on a self-contained wire connector, and the gaps between the wires are small. For cable stripping of this type of connector, the traditional method can only strip the wires one by one, which is time-consuming and labor-intensive, and the size consistency of the stripped wires cannot be effectively guaranteed. In order to ensure the size consistency of the stripped wires, manual stripping uses the marking method to draw the specific stripping position of the wire on each wire before stripping, and then strips the wires in turn according to the drawn stripping position of the wires during the stripping process. When there are many wires, the stripping efficiency cannot be effectively improved.

[0004] The prior art has proposed some solutions to improve the traditional mechanical wire stripping method, using laser or wire thermal stripper to strip the wire. When laser stripping is used, the wire to be processed is placed in a slotted wire stripping fixture, clamped on both sides and sent to the laser at a certain speed. After using the laser to strip one side of the wire, the wire is turned over by a flipping device, and then the other half of the wire is stripped, or the laser is rotated to strip the wire once. When using a wire thermal stripper to strip the wire, the external temperature of the thermal stripper can reach more than 800 degrees Celsius. The thermal stripper heats the wire sheath to melt the wire sheath at the heated location, and a separation force is applied to achieve the stripping of the metal core wire and the sheath of the wire. The thermal stripper will not damage the core wire of the wire like using wire strippers during the stripping process, and the stripping effect is better than that of laser stripping. However, whether it is laser stripping or thermal stripping, only one wire can be stripped at a time. The size positioning effect is poor during stripping, and the scrap rate is high. It is not suitable for the requirements of precise and batch stripping. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects of the prior art and provide a device and method for accurately stripping fine wires in batches of rectangular connectors, so as to solve the problems of large dimensional errors when stripping batches of wires and low efficiency when stripping a single wire.

[0006] The object of the present invention is achieved through the following technical solutions:

[0007] A device for accurately stripping fine wires in batches of rectangular connectors, the stripping device comprising a first fixed arm and a second fixed arm hinged to each other, the first fixed arm being provided with a first heatable jaw, the second fixed arm being provided with a second heatable jaw;

[0008] A heating circuit is embedded in the handles of the first fixed arm and the second fixed arm, and the heating circuit, the first heatable jaw and the second heatable jaw form a closed loop to achieve jaw heating;

[0009] The wire stripping device also includes a fixed-length control scale arranged on the first fixed arm or the second fixed arm, the fixed-length control scale is parallel to the heated jaws of the fixed arm where it is located, and a fixed-length control slider is also provided on the fixed-length control scale, and the wire stripping length is adjusted by changing the position of the fixed-length control slider.

[0010] Furthermore, the degree control scale is provided with a slider locking knob and a locking groove, and the fixed length control slider is provided with a knob fixing groove. By tightening the slider locking knob to cooperate with the knob fixing groove, the fixed length control slider is fixed in the locking groove.

[0011] Furthermore, a jaw temperature adjustment knob is provided on the outside of the handle, and the jaw temperature adjustment knob is used to control a variable resistor inside the handle. The variable resistor is connected in series with the first heatable jaw and the second heatable jaw. The current on the heatable jaw is changed by changing the resistance range of the variable resistor, thereby changing the heating temperature of the heatable jaw.

[0012] Furthermore, the fixed-length control slider is made of polytetrafluoroethylene material.

[0013] Furthermore, the wire stripping device also includes a variable-size jaw adjustment component, which includes a variable-size jaw adjustment slide and a variable-size jaw adjustment knob. The variable-size jaw adjustment slide is driven by adjusting the variable-size jaw adjustment knob, thereby changing the wire diameter that the heated jaw is adapted to.

[0014] Furthermore, the first fixed arm and the second fixed arm are connected to the handle via a spring below the hinged portion. When the wire stripping device is used, the first fixed arm and the second fixed arm drive the heated jaws to move at a uniform speed via the spring.

[0015] Furthermore, a battery is arranged inside the handle to supply power to the heating circuit, and the outside of the handle is covered with an insulating layer.

[0016] On the other hand, the present invention also provides a method for batch precise stripping of fine wires of rectangular connectors, the method being implemented based on any of the aforementioned stripping devices, the method comprising:

[0017] Obtaining basic information of the rectangular connector, the basic information including the number of core wires and wire diameter;

[0018] Place the rectangular connector wire in a heated jaw with a fixed-length control slider, and determine the stripping length by adjusting the position of the fixed-length control slider;

[0019] The rectangular connector wire is clamped with the heated jaws on the other side, and the insulation layer on the rectangular connector wire is melted and then stripped off with the heated jaws.

[0020] Furthermore, the method further comprises:

[0021] The rectangular connector wires are combed into rows before being placed in the heatable jaws.

[0022] The beneficial effects of the present invention are:

[0023] The present invention uses a rectangular connector fine wire batch precision stripping device to improve the problems of low efficiency and poor stripping accuracy caused by the traditional stripping operation of only stripping one wire at a time and inappropriate stripping size. It can realize batch precision stripping of the wires of the rectangular connector, thereby improving the efficiency and accuracy of stripping. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 1 is a front view of a device for accurately stripping fine wires in batches in a rectangular connector according to an embodiment of the present invention;

[0025] Figure 2 3. It is a three-dimensional diagram of a device for accurately stripping fine wires in batches of rectangular connectors according to an embodiment of the present invention;

[0026] Figure 3 The present invention is a flowchart of a method for accurately stripping fine wires in batches from rectangular connectors according to an embodiment of the present invention.

[0027] Figure markings: 1-fixed length control slider; 2-jaw temperature adjustment knob; 3-variable size jaw adjustment knob; 4-handle; 5-battery; 6-spring; 7-jaw fixing arm; 8-fixed length control slider locking knob; 9-heatable jaw; 10-fixed length control scale. DETAILED DESCRIPTION

[0028] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0029] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0030] When using laser wire stripping, place the wire to be processed in a slotted wire stripping fixture, clamp both sides and feed it into the laser at a certain speed. After using the laser to strip one side of the wire, use the flipping device to turn the wire over, and then strip the other half of the wire, or turn the laser to strip the wire once. When using a wire thermal stripper to strip the wire, the external temperature of the thermal stripper can reach over 800 degrees Celsius. The thermal stripper heats the wire sheath to melt the wire sheath at the heated location, and at the same time, a separation force is applied to achieve the stripping of the metal core wire and the sheath of the wire. The thermal stripper will not damage the core wire of the wire like using wire strippers during the stripping process, and the stripping effect is better than that of laser stripping. However, whether it is laser stripping or thermal stripping, only one wire can be stripped at a time. The size positioning effect is poor during stripping, and the scrap rate is high. It is not suitable for precise and batch stripping requirements.

[0031] In order to solve the above technical problems, the following embodiments of the device and method for batch precise stripping of fine wires of rectangular connectors of the present invention are proposed.

[0032] Example 1

[0033] Reference Figure 1 and Figure 2 ,like Figure 1 The figure is a front view of the device for accurately stripping fine wires in batches of rectangular connectors according to the present embodiment. Figure 2The figure shows a stereoscopic diagram of the device for accurately stripping fine wires in batches of rectangular connectors of this embodiment. The device includes a left-side heatable jaw 9, a right-side heatable jaw 9, a fixed-length control slider 1, a variable-size jaw adjustment knob 3, a fixed-length control scale 10, a jaw temperature adjustment knob 2, a jaw fixing arm 7, a battery 5, and a handle 4. The left-side heatable jaw 9 and the right-side heatable jaw 9 are connected by a pin and a spring 6, and can be relatively movable to achieve the purpose of cutting the cable. The left-side heatable jaw 9 and the right-side heatable jaw 9 are both made of electric heating metal, and can form a closed loop with the battery 5 on the handle 4 to achieve electric heat conversion, thereby achieving the purpose of heating the jaws. The jaw temperature adjustment knob 2 can adjust the resistance value in the closed loop composed of the jaws and the battery 5 according to the temperature required in the actual wire stripping process, thereby changing the current in the loop, thereby realizing the setting and adjustment of the shearing temperature on the jaws, and realizing the thermal stripping of the wire sheath. The fixed length control slider 1 can move freely on the fixed length control scale 10. The fixed length control slider 1 can be accurately fixed by the fixed knob at the rear to achieve accurate fixing of the cable stripping size. The fixed length control scale 10 is a fixed structure scale with a size measurement accuracy of at least 0.02mm. The variable size jaw adjustment knob 3 can be adjusted as needed for cables with different wire diameters. The adjustable wire diameter size ranges from 0.06mm to 0.06mm. 2 Up to 2.5mm 2 By controlling the size of the wire stripping jaws, batch stripping of wires of various specifications can be achieved. The jaw fixing arm 7 is a structural arm dedicated to fixing the heated jaws 9 on the left / right sides. The battery 5 is embedded in the handle 4 of the wire stripping device and is used to supply power for jaw heating. The handle 4 is coated with insulating material on the outside and has a circuit structure inside, which is powered by the battery 5.

[0034] Specifically, the variable size jaw adjustment knob 3 has a structure with one side fixed and the other side as a variable slide, and the knob is adjusted to adapt to the wire diameter of different wires. The jaws are made of insulating plastic, and slots are opened on them to fix the heated jaws 9 on the left and right sides, which are used to fix the heated jaws. Wires are pre-buried inside to achieve circuit interconnection. Below the jaw temperature adjustment knob 2 is a variable resistor, which is connected in series with the heated jaws 9 on the left and right sides in the circuit connection relationship. By changing its resistance range, the current in the circuit is changed, and then the current on the heated jaws 9 is adjusted, thereby changing the heating temperature on the jaws. The (left / right) heated jaws 9 are fixed on the fixed arms of the jaws, and the fixed arms on both sides are connected by pins. The spring 6 in the middle is used to achieve the purpose of uniform movement of the two jaws. The fixed length control slider 1 is made of polytetrafluoroethylene material, which has the characteristics of high temperature resistance, insulation and self-lubrication. The fixed length control ruler 10 is made of stainless steel, and has a fixing groove for the fixed length control slider locking knob 8. The fixed length control slider 1 and the fixed length control ruler 10 are designed in the form of a slide rail, which can realize the free movement of the fixed length control slider 1. When the preset length is reached, the fixed length control slider locking knob 8 is tightened to clamp the slider in the locking groove on the fixed length control ruler 10. The battery 5 in the handle 4 is used for power supply, and the battery 5 is hidden in the handle 4. The handle 4 is coated with rubber insulating material to prevent affecting the operation of the internal heating circuit.

[0035] Example 2

[0036] Based on the rectangular connector fine wire batch precision stripping device provided in the previous embodiment, this embodiment provides a rectangular connector fine wire batch precision stripping method, referring to Figure 3 ,like Figure 3 The figure is a flowchart of the method for batch precise wire stripping of fine wires of rectangular connectors in this embodiment. This embodiment takes the wire stripping of J30J-9TJL self-contained rectangular connector as an example. The cross-sectional area of ​​the self-contained wire is 0.12mm 2 There are 9 built-in wires in 2 rows, 4 wires in the first row and 5 wires in the second row. The length of wire stripping is 3mm. The method specifically includes the following steps:

[0037] 1. First adjust the variable size jaw adjustment knob to 0.12mm 2 ;

[0038] 2. Separate the four wires in the first row and place them in the jaws on one side of the fixed-length control slider to clamp the self-contained wires on the connector;

[0039] 3. The insulation sheath of the self-contained wire needs to be stripped off by 3mm, and the position of the fixed length control slider needs to be adjusted to 3mm. The fixed length control slider locking knob needs to be used to lock the fixed length control slider.

[0040] 4. Press the handle down, the jaws on both sides close, and clamp the first row of wires;

[0041] 5. Adjust the jaw temperature adjustment knob and wait for about 6 seconds. After the jaw temperature rises and the outer insulation sheath of the wire melts at the jaw due to heat, move the jaw about 1-2mm toward the fixed length control slider to make the wire insulation sheath fall off from the wire, exposing the inner conductor. The first row of wire stripping is completed.

[0042] 6. Loosen the locking knob of the fixed length control slider, open the handle, and take out the first row of wires;

[0043] 7. Separate the 5 wires in the second row and place them in the jaws on one side of the fixed-length control slider to clamp the self-contained wires on the connector;

[0044] 8. Adjust the position of the fixed length control slider to 3mm, and use the fixed length control slider locking knob to lock the fixed length control slider;

[0045] 9. Press down the handle, the jaws on both sides close, and clamp the second row of wires;

[0046] 10. Adjust the temperature adjustment knob of the jaws and wait for about 6 seconds. When the jaw temperature rises and the outer insulation sheath of the wire melts at the jaws due to heat, move the jaws about 1-2mm toward the fixed length control slider to make the wire insulation sheath fall off from the wire and expose the inner conductor. After the second row of stripping is completed, the J30J-9TJL self-contained rectangular connector stripping is completed.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for accurately stripping fine wires in batches of rectangular connectors, the stripping device comprising a first fixed arm and a second fixed arm hinged to each other, characterized in that: The first fixed arm is provided with a first heatable jaw, and the second fixed arm is provided with a second heatable jaw; A heating circuit is embedded in the handles of the first fixed arm and the second fixed arm, and the heating circuit, the first heatable jaw and the second heatable jaw form a closed loop to achieve jaw heating; The wire stripping device also includes a fixed-length control scale arranged on the first fixed arm or the second fixed arm, the fixed-length control scale is parallel to the heated jaws of the fixed arm where it is located, and a fixed-length control slider is also provided on the fixed-length control scale, and the wire stripping length is adjusted by changing the position of the fixed-length control slider.

2. The device for accurately stripping fine wires in batches from rectangular connectors as claimed in claim 1, characterized in that: The degree control scale is provided with a slider locking knob and a locking groove, and the fixed length control slider is provided with a knob fixing groove. By tightening the slider locking knob to cooperate with the knob fixing groove, the fixed length control slider is fixed in the locking groove.

3. The device for accurately stripping fine wires in batches for rectangular connectors as claimed in claim 1, characterized in that: A jaw temperature adjustment knob is also provided on the outside of the handle, and the jaw temperature adjustment knob is used to control the variable resistor inside the handle. The variable resistor is connected in series with the first heatable jaw and the second heatable jaw. The current on the heatable jaw is changed by changing the resistance range of the variable resistor, thereby changing the heating temperature of the heatable jaw.

4. The device for accurately stripping fine wires in batches from rectangular connectors as claimed in claim 1, characterized in that: The fixed-length control sliding block is made of polytetrafluoroethylene material.

5. The device for accurately stripping fine wires in batches from rectangular connectors as claimed in claim 1, characterized in that: The wire stripping device also includes a variable-size jaw adjustment component, which includes a variable-size jaw adjustment slide and a variable-size jaw adjustment knob. The variable-size jaw adjustment slide is driven by adjusting the variable-size jaw adjustment knob to change the wire diameter that the heated jaw is adapted to.

6. The device for accurately stripping fine wires in batches for rectangular connectors as claimed in claim 1, characterized in that: The first fixed arm and the second fixed arm are connected to the handle through a spring below the hinged portion. When the wire stripping device is used, the first fixed arm and the second fixed arm drive the heated jaws to move at a uniform speed through the spring.

7. The device for accurately stripping fine wires in batches from rectangular connectors as claimed in claim 1, characterized in that: A battery is arranged inside the handle to supply power to the heating circuit, and the outside of the handle is covered with an insulating layer.

8. A method for accurately stripping fine wires in batches from rectangular connectors, characterized in that: The method is implemented based on the wire stripping device according to any one of claims 1 to 7, and the method comprises: Obtaining basic information of the rectangular connector, the basic information including the number of core wires and wire diameter; Place the rectangular connector wire in a heated jaw with a fixed-length control slider, and determine the stripping length by adjusting the position of the fixed-length control slider; The rectangular connector wire is clamped with the heated jaws on the other side, and the insulation layer on the rectangular connector wire is melted and then stripped off with the heated jaws.

9. The method for accurately stripping fine wires in batches from rectangular connectors as claimed in claim 8, characterized in that: The method further comprises: The rectangular connector wires are combed into rows before being placed in the heatable jaws.

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