A high-pressure-resistant wire harness and a wire harness terminal crimping and forming device

Abstract

The application relates to the technical field of terminal crimping, in particular to a high-pressure-resistant wire harness and a wire harness terminal crimping and forming equipment; the equipment comprises a base and a cabinet fixedly connected to the base upwards; the cabinet is provided with a telescopic rod telescopically downwards; the lower end of the telescopic rod is fixedly connected with an inverted U-shaped upper seat; the inner side of the lower surface of the upper seat is fixedly connected with an upper die; the lower surface of the upper die is provided with m grooves; the upper surface of the base is fixedly connected with a machine plate; the upper machine plate is fixedly connected with a lower die and a lower seat; the upper surface of the lower die is provided with m-shaped protrusions corresponding to the m grooves; the wire wrapping part of the wire harness terminal is bent inwards in the state that the wire core is compressed, so that the wire on the wire core is prevented from overflowing in the wire wrapping part of the wire harness terminal during the tightening process, and the wire harness terminal is suitable for crimping of a high-purity rare earth modified alloy terminal.

Description

Technical Field

[0001] This invention relates to the field of terminal crimping technology, specifically to a high-voltage resistant wire harness and wire harness terminal crimping equipment. Background Technology

[0002] High-voltage wiring harnesses are core power transmission and connection components in high-voltage electrical complete sets of equipment, new energy storage equipment, new energy vehicle on-board power systems, and industrial high-voltage transmission systems, playing a crucial role in high-voltage current transmission, circuit connection, and closed-loop power transmission. In recent years, to improve the high-voltage resistance, high-temperature resistance, and electrochemical corrosion resistance of wiring harnesses, high-purity rare earth metals (such as lanthanum, cerium, yttrium, etc.) and their alloy products have been gradually introduced into the wiring harness manufacturing field. For example, terminal materials made of rare earth modified copper alloys or aluminum alloys, and the embedding of rare earth reinforced composite reinforcing rings in the wiring harness insulation layer, can improve the overall voltage withstand level and long-term service reliability of the wiring harness.

[0003] However, as the core connection node of high-voltage wire harnesses, the crimped joint between the wire harness and the terminal directly determines the conductivity stability, high-voltage insulation performance, and service life of the entire high-voltage line based on its forming quality, fitting accuracy, and structural compactness. In existing high-voltage wire harness assembly processes, O-type connectors and U-shaped wire-wrapped terminals are widely used due to their wide structural adaptability and convenient disassembly and maintenance. These terminals rely on the inward bending and tightening of the open wire wrapping on both sides to enclose the exposed wire core after stripping the wire harness, and rigid crimping and fixing of the terminal and the wire core is achieved through die extrusion.

[0004] Currently, the core operating principle of conventional crimping equipment used in the industry is the traditional vertical clamping and extrusion method using upper and lower molds. However, this method has significant shortcomings: Firstly, the wires in the core after stripping the wire harness are in a loose state. During the dynamic process of gradually tightening the terminal wrapping, the wires are prone to overflowing, resulting in incomplete wrapping and loose bonding. Secondly, for terminals or core materials made of high-purity rare earth modified alloys (such as rare earth copper alloy terminals), their hardness and elastic modulus differ from conventional materials. Traditional crimping equipment cannot pre-sort and evenly distribute the core according to the material characteristics, which can easily cause gaps on the inside of the terminal after crimping or wire breakage, thus affecting the advantages of rare earth materials and reducing the high-voltage resistance and long-term stability of the wire harness. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention proposes a high-voltage resistant wire harness and wire harness terminal crimping and forming device. In this invention, the wire wrapping portion of the wire harness terminal is bent inward while the wire core is being compressed, thus avoiding the leakage of wire strands from the wire core during the tightening process of the wire wrapping portion of the wire harness terminal. This invention is suitable for crimping high-purity rare earth modified alloy terminals (such as rare earth copper alloy and rare earth aluminum alloy terminals). These terminal materials have high hardness, and traditional crimping is prone to local stress concentration due to uneven wire distribution. This invention effectively protects the structural integrity of rare earth alloy terminals through pre-compression and orderly gathering, improves the wrapping effect of the wire core, and thus fully utilizes the high conductivity and high temperature resistance characteristics of rare earth materials, improving the crimping and forming quality of wire harness terminals.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: A high-voltage resistant wire harness terminal crimping and forming equipment includes a base and a chassis fixedly connected to the base upwards; a telescopic rod is telescopically mounted downwards on the chassis; an inverted U-shaped upper seat is fixedly connected to the lower end of the telescopic rod; an upper mold is fixedly connected to the inner side of the lower surface of the upper seat; an m-groove is provided on the lower surface of the upper mold; a machine plate is fixedly connected to the upper surface of the base; a lower mold and a lower seat are fixedly connected above the machine plate; an m-shaped protrusion corresponding to the m-groove is provided on the upper surface of the lower mold; and a... A vertical groove; an isosceles trapezoidal strip is vertically fixedly connected within the vertical groove; the isosceles trapezoidal strip is slidably connected to an isosceles trapezoidal groove on a vertical block; the upper surface of the vertical block is connected to the upper inner wall of the vertical groove by a vertical spring; a Z-shaped strip is connected to the vertical block at the rear; a strip-shaped groove is provided on the lower surface of the Z-shaped strip; an inverted protrusion is slidably connected to the groove; a block spring is connected to the rear side of the protrusion and the inner wall of the groove; the elastic force of the block spring is greater than that of the vertical spring; a pressure strip is fixedly connected to the lower end of the protrusion; the pressure strip extends forward to the inner side of the m-groove; the upper surface of the pressure strip is inclined forward.

[0007] Preferably, the horizontal bar fixedly connected to the rear side of the vertical block is slidably connected to the horizontal groove at the front end of the Z-shaped bar; the cross-section of the horizontal bar and the horizontal groove are both isosceles trapezoids; the left and right inner walls of the vertical groove are both corrugated; the troughs and crests of the two corrugated surfaces are correspondingly arranged; and triangular bars are fixedly connected to the left and right sides of one end of the Z-shaped bar located in the vertical groove.

[0008] Preferably, the lower surface of the pressure strip is arc-shaped; a corresponding elastic arc-shaped piece is fixedly connected to the lower surface of the pressure strip; the left and right width of the elastic arc-shaped piece is greater than the left and right width of the pressure strip.

[0009] Preferably, a plurality of levers are fixedly connected to the lower surface of the elastic arc-shaped sheet; the plurality of levers are distributed in a spread-out manner along the arc direction of the elastic arc-shaped sheet.

[0010] Preferably, the protrusion and the pressure strip are provided with an inverted L-shaped groove; an L-shaped strip is slidably connected to the L-shaped groove; the width of the upper end of the L-shaped strip is smaller than the width of the lower end; the L-shaped strip and the inner wall of the L-shaped groove are connected by a first tension spring; a comb hole is provided through the lower end of the L-shaped groove; the comb hole passes through an elastic arc-shaped piece and is offset from the push bar; comb teeth are movably connected to the comb hole and fixedly connected to the L-shaped strip; a driving groove is provided on the upper inner wall of the groove; the driving groove is composed of a clearance part at the front end and a straight part at the rear end; the depth of the clearance part of the driving groove is greater than that of the straight part; the upper end of the L-shaped strip extends into the driving groove.

[0011] Preferably, rollers are distributed front and back on the upper surface of the pressure strip; the rollers are in rolling connection with the grooves on the upper surface of the pressure strip.

[0012] Preferably, the lower mold is fixedly connected to a placement block adapted to the O-shaped portion of the wire harness terminal; the placement block is fixedly connected to two symmetrically distributed limiting blocks.

[0013] Preferably, the lower seat has a guide hole facing downward on its upper surface; a guide rod fixedly connected to the upper seat is slidably connected in the guide hole; a pull groove is provided through the guide hole facing backward; a pull bar fixedly connected to the lower end of the guide rod is slidably connected in the pull groove; two pull bars are connected to an inverted U-shaped strip by a second tension spring; the inverted U-shaped strip is located above the placement block.

[0014] Preferably, a circular block is fixedly connected to the lower inner surface of the inverted U-shaped strip; a guide angle is provided at the lower end of the circular block; and a circular groove for inserting the circular block is provided through the upper and lower parts of the placement block.

[0015] A high-voltage resistant wire harness is provided, wherein the wire harness is processed using the aforementioned high-voltage resistant wire harness terminal crimping and forming equipment. The wire harness includes an insulating sheath and a wire core inside the insulating sheath. The wire core is composed of multiple wires. Multiple reinforcing rings are embedded in the insulating sheath along its length direction. The reinforcing rings are made of non-conductive metal material.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. In this invention, the wire wrapping portion of the wire harness terminal is bent inward while the wire core is being compressed. This avoids the wire strands on the wire core overflowing during the tightening process of the wire wrapping portion of the wire harness terminal. It is suitable for crimping high-purity rare earth modified alloy terminals (such as rare earth copper alloy and rare earth aluminum alloy terminals). These terminal materials have high hardness, and traditional crimping is prone to local stress concentration due to uneven wire distribution. This invention effectively protects the structural integrity of rare earth alloy terminals through pre-compression and orderly tightening, improves the wrapping effect of the wire core, and thus fully utilizes the high conductivity and high temperature resistance of rare earth materials, improving the crimping and forming quality of wire harness terminals.

[0018] 2. This invention uses a left-right shifting structure of the pressure bar to evenly spread the wire core strands within the coil in the left-right direction, avoiding breakage due to excessive strands and gaps due to insufficient strands. Especially for high-purity rare earth reinforced wire cores, such as copper or aluminum wire cores with added rare earth elements, the toughness and ductility of the strands are different from ordinary materials. This invention can specifically adjust the strand distribution to ensure that the inner side of the terminal is densely filled after crimping without voids, thereby improving the high-voltage breakdown resistance and vibration fatigue resistance of the wire harness. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a perspective view of the equipment in the processing state in this invention;

[0021] Figure 2 This is a perspective view of the device in this invention;

[0022] Figure 3 This is a perspective view of the upper and lower molds in this invention;

[0023] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0024] Figure 5 yes Figure 3 A stereoscopic view from the rear;

[0025] Figure 6 yes Figure 5 Enlarged view of point B in the middle;

[0026] Figure 7 This is a perspective view of the pull strip, inverted U-shaped strip, and circular block in this invention;

[0027] Figure 8 This is a perspective view of the pressure strip and the Z-shaped strip in this invention;

[0028] Figure 9 yes Figure 8 Partial sectional view;

[0029] Figure 10 This is a structural diagram of the wire harness and wire harness terminals in this invention.

[0030] In the diagram: base 1, chassis 11, telescopic rod 12, machine plate 13, upper seat 2, upper mold 3, m-groove 31, vertical groove 32, isosceles trapezoidal strip 33, vertical block 34, isosceles trapezoidal groove 341, horizontal bar 342, vertical spring 35, lower mold 4, m-shaped protrusion 41, lower seat 5, guide hole 51, guide rod 52, pull groove 53, pull bar 54, second tension spring 55, inverted U-shaped strip 56, round block 57, Z-shaped strip 6, groove 61, protrusion 62, block spring 63, horizontal groove 64, triangular strip 65, drive groove 66, pressure strip 7, elastic arc sheet 71, lever 72, L-shaped groove 73, L-shaped strip 74, first tension spring 75, comb hole 76, comb teeth 77, roller 78, rolling groove 79, placement block 8, limit block 81, round groove 82, insulating skin 91, wire core 92, reinforcing ring 93. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] like Figures 1 to 10 As shown, the present invention includes the following embodiments:

[0033] Example 1: A high-voltage resistant wire harness terminal crimping forming device includes a base 1 and a chassis 11 fixedly connected to the base 1 upwards; a telescopic rod 12 is telescopically mounted on the chassis 11 downwards; an inverted U-shaped upper seat 2 is fixedly connected to the lower end of the telescopic rod 12; an upper mold 3 is fixedly connected to the inner side of the lower surface of the upper seat 2; an m-groove 31 is provided on the lower surface of the upper mold 3; a machine plate 13 is fixedly connected to the upper surface of the base 1; a lower mold 4 and a lower seat 5 are fixedly connected above the machine plate 13; an m-shaped protrusion 41 corresponding to the m-groove 31 is provided on the upper surface of the lower mold 4; a vertical groove 32 is provided on the rear side of the upper mold 3; a vertically fixed part is connected within the vertical groove 32. An isosceles trapezoidal strip 33 is slidably connected to an isosceles trapezoidal groove 341 provided on a vertical block 34. The upper surface of the vertical block 34 is connected to the upper inner wall of the vertical groove 32 by a vertical spring 35. The vertical block 34 is connected to a Z-shaped strip 6 at the rear. The lower surface of the Z-shaped strip 6 is provided with a strip-shaped groove 61. The groove 61 is slidably connected to an inverted protrusion 62. The rear side of the protrusion 62 is connected to the inner wall of the groove 61 by a block spring 63. The elastic force of the block spring 63 is greater than that of the vertical spring 35. The lower end of the protrusion 62 is fixedly connected to a pressure strip 7. The pressure strip 7 extends forward to the inner side of the groove 31. The upper surface of the pressure strip 7 is inclined forward.

[0034] The wire harness terminal of this invention adopts an O-type terminal. The wire harness terminal has an open U-shaped structure for its wrapping portion. The wire harness terminal is placed on the m-shaped protrusion 41. The upper end of the m-shaped protrusion 41 has a downward-facing concave arc structure, which allows the wire harness terminal to be placed. After stripping the wire harness, the wire core 92 of the wire harness is placed into the wrapping portion of the U-shaped wire harness terminal. Then, the telescopic rod 12 is controlled to move downward. The telescopic rod 12 is actually a telescopic hydraulic cylinder or a telescopic air cylinder. The extension of the telescopic rod 12 will drive the upper seat 2 to move downward. During the downward movement of the upper seat 2, the upper mold 3 will move downward. During the downward movement of the upper mold 3, the lower end of the m-groove 31 will move downward. During the downward movement of the m-groove 31, it will cover the wrapping portion of the wire harness terminal.

[0035] As the upper mold 3 moves downward, it causes the vertically arranged isosceles trapezoidal strip 33 in the vertical groove 32 to move downward. This movement of the isosceles trapezoidal strip 33 causes the vertical block 34 and the Z-shaped strip 6 to move downward. The Z-shaped strip 6, in turn, causes the protrusion 62 and the pressure strip 7 to move downward. The lower surface of the pressure strip 7 presses against the surface of the wire core 92 inside the wire harness terminal's wrapping section. The elastic force of the block spring 63 is greater than that of the vertical spring 35. As the upper mold 3 continues to move downward, the vertical spring 35 is continuously compressed and shortened. The vertical spring 35 transmits its elastic force to the vertical block 34, which in turn transmits the elastic force of the vertical spring 35 through the Z-shaped strip 6 to the protrusion 62 and the pressure strip 7, increasing the pressure of the pressure strip 7 on the wire core 92. The pressure strip 7 also gradually approaches the upper inner wall of the m-groove 31. As the lower mold 4 moves the m-groove 31 downward, it squeezes the wire harness terminal's wrapping section, causing it to bend inward. This inward bending of the wire harness terminal's wrapping section further compresses the inclined surface of the pressure strip 7. During the pressing process, the pressure strip 7 moves backward, which causes the protrusion 62 to slide along the strip-shaped groove 61. The protrusion 62 needs to overcome the elastic force of the block spring 63 during the backward movement. During the backward movement of the pressure strip 7, the lower surface continuously presses the wire core 92, so that the wire wrapping part of the wire harness terminal bends inward under the pressed state of the wire core 92. This avoids the wire strands on the wire core 92 overflowing during the tightening of the wire wrapping part of the wire harness terminal. It is suitable for the crimping of high-purity rare earth modified alloy terminals (such as rare earth copper alloy and rare earth aluminum alloy terminals). These terminal materials have high hardness, and traditional crimping is prone to local stress concentration due to uneven wire distribution. This invention effectively protects the structural integrity of rare earth alloy terminals through pre-pressing and orderly gathering, improves the wrapping effect of the wire core, and thus gives full play to the high conductivity and high temperature resistance of rare earth materials, improving the crimping and forming quality of wire harness terminals.

[0036] Before the wire harness terminal's wrapping portion is bent, the pressure strip 7 moves backward and out of the inside of the wire harness terminal's wrapping portion. The wire core 92 bends inward at the wire harness terminal's wrapping portion to achieve the wire harness terminal crimping process. Then, the upper mold 3 is controlled to move upward. During this upward movement, the upper mold 3 drives the rear isosceles trapezoidal strip 33 to move upward. As the isosceles trapezoidal strip 33 moves upward, it interacts with the vertical block 34. The vertical spring 35 pushes the vertical block 34 to slide along the isosceles trapezoidal strip 33. 4. The Z-shaped strip 6 and the pressure strip 7 remain in contact with the wire harness terminal until the vertical block 34 moves to the lower end of the isosceles trapezoidal strip 33. As the upper mold 3 continues to move upward, the upper mold 3 will drive the vertical block 34 to move upward. During the upward movement of the vertical block 34, the Z-shaped strip 6 and the pressure strip 7 will move upward until the pressure strip 7 is higher than the crimped wire harness terminal. Then, the block spring 63 will push the protrusion 62 to slide forward along the groove 61 to reset, and the pressure strip 7 will return to the inside of the groove 31.

[0037] Example 2: The horizontal bar 342 fixedly connected to the rear side of the vertical block 34 is slidably connected to the horizontal groove 64 at the front end of the Z-shaped bar 6; the cross sections of the horizontal bar 342 and the horizontal groove 64 are both isosceles trapezoids; the left and right inner walls of the vertical groove 32 are both corrugated; the troughs and crests of the two corrugated surfaces are correspondingly arranged; the left and right sides of the Z-shaped bar 6 located in the vertical groove 32 are fixedly connected to the triangular bars 65.

[0038] In this embodiment, the lower surface of the pressure strip 7 is configured as an arc shape; a corresponding elastic arc-shaped piece 71 is fixedly connected to the lower surface of the pressure strip 7; the left and right widths of the elastic arc-shaped piece 71 are greater than the left and right widths of the pressure strip 7.

[0039] After placing the wire harness terminal and the wire core 92, the upper mold 3 is moved downwards. The upper mold 3 moves the pressure strip 7 downwards and it contacts the surface of the wire core 92 inside the wire harness terminal's wrapping part. As the upper mold 3 continues to move downwards, the vertical groove 32 and the vertical block 34 on the rear side of the upper mold 3 move together. The vertical block 34 overcomes the vertical spring 35 and slides upwards relative to the isosceles trapezoidal strip 33. During the relative upward movement of the vertical block 34 in the vertical groove 32, it moves one end of the Z-shaped strip 6 located in the vertical groove 32 upwards synchronously. During the relative upward movement of one end of the Z-shaped strip 6 located in the vertical groove 32, it moves the triangular strip 65 upwards. A peak on one corrugated surface squeezes the triangular strip 65 to a trough on another corrugated surface. The peaks and troughs on the two corrugated surfaces are staggered, thus causing the triangular strip 65 to move upwards. The triangular strip 65 moves back and forth, causing the z-shaped strip 6 to move back and forth. The z-shaped strip 6 then causes the protrusion 62 and the pressure strip 7 to move back and forth. During the back and forth movement of the pressure strip 7, the wire core 92 inside the wire harness terminal's wrapping section can be moved back and forth, causing the wire core 92 to spread out in the left and right direction. Next, as the upper mold 3 moves down, the upper mold 3 will squeeze the wrapping section of the wire harness terminal through the m-groove 31, causing the wrapping section of the wire harness terminal to bend inward, forming a B-shaped structure. Because the wire core 92 inside the wrapping section spreads out in the left and right direction, the wires on the inner side of the two bent parts of the wrapping section are more evenly distributed, avoiding the situation where too many wires cause breakage or too few wires cause gaps, thereby improving the crimping effect of the wire harness terminal.

[0040] Furthermore, a corresponding elastic arc-shaped piece 71 is fixedly connected to the lower surface of the pressure strip 7. The left edge of the elastic arc-shaped piece 71 bends upward as the pressure strip 7 moves to the left, and the right edge of the elastic arc-shaped piece 71 returns to its original position and unfolds as the pressure strip 7 moves to the left. The right edge of the elastic arc-shaped piece 71 bends upward as the pressure strip 7 moves to the right, and the left edge of the elastic arc-shaped piece 71 returns to its original position and unfolds as the pressure strip 7 moves to the right. This arrangement of the elastic arc-shaped piece 71 allows the wires in the upper part of the wire core 92 inside the wrapping part to be contacted and moved, improving the spreading effect of the wires in the wire core 92. Because the elastic arc-shaped piece 71 arches downward, the wires in the wire core 92 are concave in the middle and symmetrically arched at the edges during the spreading process, which is more suitable for the wrapping part that bends inward and improves the crimping effect.

[0041] Example 3: A plurality of levers 72 are fixedly connected to the lower surface of the elastic arc-shaped sheet 71; the plurality of levers 72 are distributed in the arc direction of the elastic arc-shaped sheet 71.

[0042] In this embodiment, the protrusion 62 and the pressure strip 7 are provided with an inverted L-shaped groove 73; an L-shaped strip 74 is slidably connected to the L-shaped groove 73; the width of the upper end of the L-shaped strip 74 is smaller than the width of the lower end; the L-shaped strip 74 and the inner wall of the L-shaped groove 73 are connected by a first tension spring 75; a comb hole 76 is provided through the lower end of the L-shaped groove 73; the comb hole 76 passes through an elastic arc-shaped piece 71 and is offset from the push bar 72; comb teeth 77 are movably connected to the comb hole 76 and are fixedly connected to the L-shaped strip 74; a driving groove 66 is provided on the upper inner wall of the groove 61; the driving groove 66 is composed of a clearance part at the front end and a straight part at the rear end; the depth of the clearance part of the driving groove 66 is greater than that of the straight part; the upper end of the L-shaped strip 74 extends into the driving groove 66.

[0043] After the wire harness terminal and wire core 92 are placed in place, the upper mold 3 is moved downward, causing the vertical block 34 to move vertically within the vertical groove 32. This causes the pressure bar 7 to move back and forth. During this back and forth movement, the wires in the wire core 92 inside the wire harness terminal's wrapping portion are spread out to the left and right. As the groove 31 moves downward, the wire harness terminal's wrapping portion bends inward and presses the inclined surface of the pressure bar 7, causing the pressure bar 7 to move backward. During this backward movement, the pressure bar 7 drives the protrusion 62 to slide backward within the groove 61. The clearance portion of the drive groove 66 transitions into the straight portion in an arc shape. The upper end of the L-shaped bar 74 enters the straight portion from the clearance portion of the drive groove 66, causing the upper end of the L-shaped bar 74 to be pressed downward. The L-shaped bar 74 moves downward against the first tension spring 75 within the L-shaped groove 73. The lower end will squeeze the comb teeth 77 out of the comb hole 76. The comb teeth 77 will protrude from the lower surface of the elastic arc-shaped piece 71. As the pressure bar 7 moves backward, the pressure bar 7 will drive the comb teeth 77 to comb the wires in the wire core 92 backward, thereby straightening the bent wires under the combing action. Then, the wires in the wire core 92 will be wrapped and crimped by the wire harness terminal after being straightened, improving the crimping effect of the wire harness terminal. After the crimping is completed, the upper mold 3 will move upward. During the upward movement of the upper mold 3, the pressure bar 7 will move upward. After the pressure bar 7 is higher than the wire harness terminal, the pressure bar 7 will move forward and reset. The L-shaped bar 74 will return to the avoidance part along the straight part of the drive groove 66, so that the first tension spring 75 pulls the L-shaped bar 74 to slide and reset in the L-shaped groove 73. The upper end of the L-shaped bar 74 will return to the avoidance part, and the comb teeth 77 will retract into the comb hole 76.

[0044] Example 4: Rollers 78 are distributed on the front and back of the upper surface of the pressure strip 7; the rollers 78 are in rolling connection with the rolling grooves 79 on the upper surface of the pressure strip 7 to reduce the friction between the upper surface of the pressure strip 7 and the wire harness terminal wrapping part.

[0045] In this embodiment, the lower mold 4 is fixedly connected to a placement block 8 that is adapted to the O-shaped part of the wire harness terminal; the placement block 8 is fixedly connected to two symmetrically distributed limiting blocks 81.

[0046] In this embodiment, the lower seat 5 has a guide hole 51 facing downward on its upper surface; a guide rod 52 fixedly connected to the upper seat 2 is slidably connected in the guide hole 51; a pull groove 53 is provided through the guide hole 51 to the rear; a pull strip 54 fixedly connected to the lower end of the guide rod 52 is slidably connected in the pull groove 53; two pull strips 54 are connected to an inverted U-shaped strip 56 by a second tension spring 55; the inverted U-shaped strip 56 is located above the placement block 8.

[0047] In this embodiment, a circular block 57 is fixedly connected to the lower inner surface of the inverted U-shaped strip 56; a guide angle is provided at the lower end of the circular block 57; and a circular groove 82 for the circular block 57 to be inserted is provided through the upper and lower parts of the placement block 8.

[0048] In the initial state, the circular block 57 moves out of the circular groove 82, leaving a placement gap with the upper surface of the placement block 8. Then, the O-shaped portion of the control wire harness terminal is placed within the placement gap, with the wire wrapping portion of the wire harness terminal located near the upper end of the lower mold 4. The limiting block 81 serves to limit the backward movement of the wire harness terminal. Next, after the wire core 92 is placed, the control upper seat 2 and upper mold 3 move downward. The upper seat 2 drives the guide rod 52 to slide along the guide hole 51. The guide rod 52 drives the pull bar 54 downward and pulls the second tension spring 55. The second tension spring 55 pulls the inverted U-shaped bar 56 downward. Guided by the guide angle, the inverted U-shaped bar 56 drives the circular block 57 to pass through the O-shaped portion. The outer diameter of the circular block 57 and the inner diameter of the circular groove 82 are adapted to the inner diameter of the O-shaped portion of the wire harness terminal, allowing the circular block 57 to pass through the O-shaped portion of the wire harness terminal. The circular block 57 will be engaged in the circular groove 82, and in conjunction with the inverted U-shaped bar 56, the O-shaped portion of the wire harness terminal is pressed and locked. This makes it less prone to displacement during the crimping process of the wire harness terminal, resulting in a more stable crimping process. The upper mold 3 and the upper seat 2 continuously move downwards, causing the pressure bar 7 to press the wire core 92. The upper mold 3 uses the m groove 31 to squeeze the wire harness terminal's wrapping part inwards for crimping. The pressure bar 7 moves backwards under pressure, and the guide rod 52 continues to move downwards in the guide hole 51, causing the pull bar 54 to further pull the second tension spring 55, completing the wire harness terminal crimping process. After the upper seat 2 and the upper mold 3 move upwards, the pressure bar 7 moves upwards above the wire harness terminal and then moves forward to reset. Then, the pull bar 54 moves upwards along with the guide rod 52, causing the second tension spring 55 to move upwards. The second tension spring 55 pushes the inverted U-shaped bar 56 and the round block 57 upwards. The round block 57 moves out from the round groove 82 and the O-shaped part of the wire harness terminal. After the round block 57 and the placement block 8 form a placement gap, the O-shaped part of the wire harness terminal is unlocked, allowing the wire harness terminal and the wire harness to be removed from between the upper mold 3 and the lower mold 4.

[0049] Example 5: A high-voltage resistant wire harness, wherein the wire harness is processed using the aforementioned high-voltage resistant wire harness terminal crimping and forming equipment. The wire harness includes an insulating sheath 91 and a wire core 92 inside the insulating sheath 91. The wire core 92 is composed of multiple wires. Multiple reinforcing rings 93 are embedded in the insulating sheath 91 along its length. The reinforcing rings 93 are made of non-conductive metal material. The reinforcing rings 93 are used to improve the voltage resistance of the wire harness and enhance its high-voltage performance.

[0050] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first," "second," "third," etc. are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of the present invention, a sliding connection means that the two parts can only slide and cannot be separated. Specifically, the groove can be set to be concave and the block can be set to be convex, and the specific design can be adjusted according to the actual situation. A sliding fit means that the two parts can slide and separate. In the description of the present invention, a rotating connection means that the two parts can only rotate and cannot produce axial displacement. Specifically, an annular groove can be set in the inner wall of the hole, and a ring that is rotatably connected to the groove can be fixedly connected to the outer wall of the shaft.

[0051] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-voltage resistant wire harness terminal crimping and forming equipment, comprising a base and a chassis fixedly connected to the base upwards; a telescopic rod is telescopically mounted on the chassis downwards; an inverted U-shaped upper seat is fixedly connected to the lower end of the telescopic rod; an upper mold is fixedly connected to the inner side of the lower surface of the upper seat; an m-groove is provided on the lower surface of the upper mold; a machine plate is fixedly connected to the upper surface of the base; a lower mold and a lower seat are fixedly connected above the machine plate; an m-shaped protrusion corresponding to the m-groove is provided on the upper surface of the lower mold; characterized in that: A vertical groove is provided on the rear side of the upper mold; an isosceles trapezoidal strip is vertically fixedly connected in the vertical groove; the isosceles trapezoidal strip is slidably connected to the isosceles trapezoidal groove provided on the vertical block; the upper surface of the vertical block is connected to the upper inner wall of the vertical groove by a vertical spring; a Z-shaped strip is connected to the rear of the vertical block; a strip-shaped groove is provided on the lower surface of the Z-shaped strip; an inverted protrusion is slidably connected to the groove; a block spring is connected to the rear side of the protrusion and the inner wall of the groove; a pressure strip is fixedly connected to the lower end of the protrusion; the pressure strip extends forward to the inner side of the groove; the upper surface of the pressure strip is inclined forward.

2. The high-voltage resistant wire harness terminal crimping and forming equipment according to claim 1, characterized in that: The horizontal bar fixedly connected to the rear side of the vertical block is slidably connected to the horizontal groove at the front end of the Z-shaped bar; the cross sections of the horizontal bar and the horizontal groove are both isosceles trapezoids; the left and right inner walls of the vertical groove are both corrugated; the troughs and crests of the two corrugated surfaces are correspondingly arranged; the left and right sides of one end of the Z-shaped bar located in the vertical groove are fixedly connected to triangular bars.

3. The high-voltage resistant wire harness terminal crimping and forming equipment according to claim 2, characterized in that: The lower surface of the pressure strip is arc-shaped; a corresponding elastic arc-shaped piece is fixedly connected to the lower surface of the pressure strip; the left and right width of the elastic arc-shaped piece is greater than the left and right width of the pressure strip.

4. The high-voltage resistant wire harness terminal crimping and forming equipment according to claim 3, characterized in that: Multiple levers are fixedly connected to the lower surface of the elastic arc-shaped plate; the multiple levers are distributed in the arc direction of the elastic arc-shaped plate.

5. The high-voltage resistant wire harness terminal crimping and forming equipment according to claim 4, characterized in that: The protrusion and pressure strip have an inverted L-shaped groove inside; an L-shaped strip is slidably connected to the L-shaped groove; the width of the upper end of the L-shaped strip is smaller than the width of the lower end; the L-shaped strip and the inner wall of the L-shaped groove are connected by a first tension spring; a comb hole is provided through the lower end of the L-shaped groove; the comb hole passes through an elastic arc-shaped piece and is offset from the push bar; comb teeth are movably connected to the comb hole and fixedly connected to the L-shaped strip; a driving groove is provided on the upper inner wall of the groove; the driving groove is composed of a clearance part at the front end and a straight part at the rear end; the depth of the clearance part of the driving groove is greater than that of the straight part; the upper end of the L-shaped strip extends into the driving groove.

6. The high-voltage resistant wire harness terminal crimping and forming equipment according to claim 1, characterized in that: Rollers are distributed front and back on the upper surface of the pressure strip; the rollers are in rolling connection with the grooves on the upper surface of the pressure strip.

7. The high-voltage resistant wire harness terminal crimping and forming equipment according to claim 1, characterized in that: The lower mold is fixedly connected to a placement block that is adapted to the O-shaped part of the wire harness terminal; the placement block is fixedly connected to two symmetrically distributed limiting blocks.

8. The high-voltage resistant wire harness terminal crimping and forming equipment according to claim 7, characterized in that: The lower seat has a guide hole facing downward on its upper surface; a guide rod that is fixedly connected to the upper seat is slidably connected in the guide hole; a pull groove is provided through the guide hole facing backward; a pull bar that is fixedly connected to the lower end of the guide rod is slidably connected in the pull groove; two pull bars are connected to an inverted U-shaped bar by a second tension spring; the inverted U-shaped bar is located above the placement block.

9. The high-voltage resistant wire harness terminal crimping and forming equipment according to claim 8, characterized in that: A circular block is fixedly connected to the lower inner surface of the inverted U-shaped strip; a guide angle is provided at the lower end of the circular block; and a circular groove for inserting the circular block is provided through the upper and lower parts of the placement block.

10. A high-voltage resistant wire harness, wherein the wire harness is processed using the high-voltage resistant wire harness terminal crimping and forming equipment according to any one of claims 1-9, characterized in that: The wire harness includes an insulating sheath and a wire core inside the insulating sheath; the wire core is composed of multiple wires; multiple reinforcing rings are embedded in the insulating sheath along its length, and the reinforcing rings are made of non-conductive metal material.

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