Connector terminal and wire harness crimping device

Abstract

The invention relates to the technical field of terminal and wire harness crimping, in particular to a connector terminal and wire harness crimping device which comprises a conveying belt, right-angle supporting plates are connected to the conveying belt in a bilateral symmetry mode, spacer block sets are arranged on the conveying belt in a bilateral symmetry mode, and each spacer block set is composed of a plurality of evenly-arranged spacer blocks. Supporting columns are symmetrically fixed to the bottom of the vertical section of each right-angle supporting plate in the front-back direction, a pressing connection mechanism and a straightening mechanism are sequentially arranged on the horizontal section of each right-angle supporting plate in the front-back direction, and an anti-falling mechanism is arranged between the horizontal sections of the two right-angle supporting plates. In the process that the clamping component clamps the two ends of the wire harness, the inner clamping jaw compresses the V-shaped spring piece under the resistance of the wire harness to form self-adaptive clamping force, then the horizontal column continues to move outwards and pulls the two ends of the wire harness to be tightened, gathering and straightening of a conductor are achieved, it is ensured that the shape of the wire harness meets the crimping condition before crimping, and the crimping quality of the wire harness is improved. Therefore, the conductivity and the tensile strength of the crimping area after crimping are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of terminal and wire harness crimping, and specifically to a connector terminal and wire harness crimping device. Background Art

[0002] A connector is a key component used to achieve reliable connection and signal transmission between electrical devices or circuits. Its core function is to ensure stable conduction of current and signals. During the manufacturing process of connectors, the crimping operation of terminals and wire harnesses is crucial: through precise mechanical crimping technology, the metal terminal is tightly fixed to the wire harness conductor to form a physical connection with low resistance and high strength. This process directly affects the electrical conductivity, tensile strength, and long-term reliability of the connector. If the crimping is poor, it may lead to an increase in contact resistance, signal attenuation, or connection detachment, thereby causing equipment failures.

[0003] Existing equipment for crimping terminals and wire harnesses usually uses a cam mechanism to drive an upwardly moving upper die in cooperation with a fixed-position lower die to quickly crimp the wire harness and the terminal. At the same time, the wire harness is conveyed by a step conveyor belt with spacer blocks, and the terminal is continuously conveyed by a winding structure for a roll of terminals with multiple terminals. When the wire harness and the terminal both move to the position of the upper die and the lower die, the upper die and the lower die move to complete the crimping action of the terminal and the wire harness.

[0004] Although the above equipment can achieve rapid crimping of the wire harness and the terminal, since the wire harness is only limited in one direction by the spacer block during the conveying process, there is a large degree of freedom in lateral displacement. At the same time, the vibration generated by the equipment during the operation of the crimping mechanism is easily transmitted to the conveying path, resulting in an offset in the relative position of the wire harness and the terminal, making it difficult to maintain precise alignment, resulting in inconsistent lengths of the two ends of the wire harness protruding, thereby affecting the crimping accuracy and the mechanical stability of the connection after crimping; in addition, the above equipment is not equipped with a pretreatment device for the end of the wire harness. When the insulating layer at the end of the wire harness is peeled off, its exposed conductors are in a dispersed state, and it is easy to cause insufficient contact area between the terminal and the conductor due to uneven distribution of the conductors during the crimping process, thereby reducing the electrical conductivity and tensile strength of the crimping area. Summary of the Invention

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a connector terminal and wire harness crimping device, including a conveyor belt, right-angle support plates symmetrically connected to the left and right of the conveyor belt, spacer block groups symmetrically arranged on the left and right of the conveyor belt, the spacer block groups being composed of a plurality of evenly arranged spacer blocks, support columns symmetrically fixed to the front and rear of the bottom of the vertical sections of the right-angle support plates, a crimping mechanism and a straightening mechanism are sequentially arranged in the front and rear on each horizontal section of the right-angle support plates, and an anti-detachment mechanism is arranged between the horizontal sections of the two right-angle support plates; the crimping mechanism includes an L-shaped fixing plate fixed to the top of the horizontal section of the right-angle support plate, a vertical column is vertically slidably connected to the horizontal section of the L-shaped fixing plate, a reset structure is connected between the vertical column and the L-shaped fixing plate, a crimping upper die is fixed to the bottom of the vertical column, a crimping lower die is installed through a positioning seat at the position corresponding to the crimping upper die on the top of the horizontal section of the right-angle support plate, and a power component is arranged on the right-angle support plate to drive the vertical column to reciprocate up and down to complete the crimping; the straightening mechanism includes a limiting plate fixed to the top of the horizontal section of the right-angle support plate, a sliding component is connected to the limiting plate, a guiding component is connected between the sliding component and the vertical column, and clamping components are arranged at the opposite ends of the two sliding components, and the sliding components are driven to move through the guiding component and cooperate with the clamping components to complete the straightening action.

[0006] Preferably, the anti-detachment mechanism includes two groups of right-angle connecting rods fixed to the top of the horizontal sections of the right-angle support plates, an installation plate is fixed between the horizontal sections of each group of right-angle connecting rods, anti-detachment plates are symmetrically fixed to the left and right on the two installation plates, and a limiting component for restricting the extending lengths of the left and right ends of the wire harness is arranged on the top of the front installation plate.

[0007] Preferably, the limiting component includes a right-angle connecting plate fixed to the top of the front installation plate, a connecting column is vertically slidably connected to the horizontal section of the right-angle connecting plate, a limiting block is fixed to the bottom of the connecting column, a horizontal plate is fixed to the top of the connecting column, and an adjusting screw is threadedly connected to the horizontal plate, and the adjusting screw is rotatably installed on the top of the horizontal section of the right-angle connecting plate.

[0008] Preferably, right-angle supporting plates are fixed to the top of the horizontal sections of the two right-angle support plates and at the positions of the straightening mechanisms, and arc-shaped supporting plates are fixed to the opposite side surfaces of the vertical sections of the two right-angle support plates, and the coiled row of terminals is supported and guided by the cooperation of the right-angle supporting plates and the arc-shaped supporting plates.

[0009] Preferably, the power component includes a motor installed on the horizontal section of the right-angle support plate through a motor box, a cam is fixed to the output end of the motor, a transmission column is rotatably installed through an installation column at the position corresponding to the cam on the top of the horizontal section of the right-angle support plate, a first push rod is fixed to the front end of the transmission column at the position corresponding to the cam, and the transmission column is rotatably connected to the vertical column.

[0010] Preferably, the sliding member includes a horizontal column horizontally and slidably connected to the limiting plate. A connecting block is fixed to one end of the horizontal column close to the conveyor belt. The top of the connecting block is connected to the guiding member, and the side of the connecting block close to the conveyor belt is connected to the clamping member.

[0011] Preferably, the guiding member includes a vertical plate fixed to the top of the connecting block. A guiding rod is fixed to the side of the vertical plate close to the vertical column. A track plate cooperating with the guiding rod is fixed to the side of the vertical column. A guiding groove is formed in the track plate, and the guiding groove cooperates with the guiding rod to drive the horizontal column and the clamping member to move away from the conveyor belt.

[0012] Preferably, the clamping member includes inclined grooves symmetrically formed in the front and rear on the side of the connecting block close to the conveyor belt. A clamping base is connected to each inclined groove through an embedded rod. A guiding structure for driving the clamping base to move up and down is jointly provided on the side of the connecting block and the top of the horizontal section of the right-angle support plate. Clamping structures are symmetrically arranged in the front and rear on the two connecting blocks. The inclined grooves cooperate with the embedded rods to make the clamping base move downward and approach each other under the driving action of the guiding structure, and at the same time drive the clamping structures to complete the clamping and straightening actions.

[0013] Preferably, the guiding structure includes a vertical groove formed in the side of the connecting block close to the conveyor belt. A moving rod is vertically and slidably connected in the vertical groove. A synchronous rod is fixed to one end of the moving rod close to the conveyor belt. The synchronous rod is slidably connected to both clamping bases. Guide plates are symmetrically fixed to the top of the horizontal section of the right-angle support plate with the vertical groove as the axis in the front and rear. A track groove is formed in the guide plate. Transmission rods cooperating with the track groove are symmetrically fixed to the front and rear ends of the synchronous rod.

[0014] Preferably, the clamping structure includes a limiting groove formed in the clamping base. An outer clamping jaw is vertically slidably connected to the limiting groove. A compression spring is connected between the outer clamping jaw and the bottom of the limiting groove. An inner clamping jaw is slidably connected to one side of the outer clamping jaw close to the vertical groove. A plurality of semi-circular grooves are evenly arranged on one side of the inner clamping jaw close to the vertical groove. A plurality of V-shaped spring pieces are connected between the inner clamping jaw and the outer clamping jaw. A second push rod is fixed to one end of the outer clamping jaw away from the vertical groove. A wedge-shaped guiding block for driving the second push rod to move is fixed to the side of the guide plate corresponding to the second push rod.

[0015] The beneficial effects of the present invention are as follows: First, the adjusting stud of the limiting member of the present invention drives the horizontal plate and the limiting block to move up and down, and the extension amounts at both ends can be flexibly adjusted according to the lengths of different batches of wire harnesses; after the adjustment is completed, during the conveying process of the wire harness, through the limiting effects of the limiting block and the anti-dropping plate, it is ensured that the wire harness is symmetrically distributed with the middle as the reference and the extension lengths at both ends are the same, thereby providing an accurate length reference for subsequent crimping, ensuring that the lengths of the left and right ends of the wire harness are the same, further ensuring the corresponding positions of the wire harness and the terminals, improving the crimping accuracy, and improving the mechanical stability of the connection between the wire harness and the terminals after crimping.

[0016] 2. In the present invention, when the vertical column rises, the horizontal column is driven by the guide groove to drive the clamping member to move outward, and the synchronization rod moves downward along the inclined section of the guide plate track groove, so that the clamping base moves toward each other and clamps the wire harness under the action of the inclined groove; in the process of the clamping member clamping the two ends of the wire harness, the inner clamping claw compresses the V-shaped spring sheet due to the resistance of the wire harness to form an adaptive clamping force, and then the horizontal column continues to move outward and pulls the two ends of the wire harness to straighten, so that the conductors are gathered and straightened, ensuring that the shape of the wire harness before crimping meets the crimping conditions, thereby improving the conductivity and tensile strength of the crimping area after the crimping is completed.

[0017] 3. In the process of outward movement of the clamping structure of the present invention, the push rod contacts the wedge-shaped guide block, thereby driving the outer clamping jaw to deflect and drive the inner clamping jaw to twist the wire harness conductor in the same direction; at the same time, the semicircular groove of the inner clamping jaw increases the contact friction with the conductor to prevent relative sliding during the twisting process, further enhance the conductor bundling effect, make the wire harness conductors with the insulation layer stripped closely arranged and straight, and thus improve the crimping quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the first viewing angle structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the structure of the second viewing angle of the present invention.

[0021] Figure 3 It is a partial structural schematic diagram of the right-angle support plate and the crimping mechanism in the present invention.

[0022] Figure 4 It is a schematic structural diagram of the right-angle support plate and the straightening mechanism in the present invention.

[0023] Figure 5 It is a partial cross-sectional view of the straightening mechanism along the moving rod and the embedded rod in the present invention.

[0024] Figure 6 It is a top view of the straightening mechanism in the present invention.

[0025] Figure 7 It is a partial cross-sectional view of the guide plate in the present invention.

[0026] Figure 8 It is a partial cross-sectional view from the front of the straightening mechanism of the present invention.

[0027] Figure 9 It is a schematic diagram of the local working state of the present invention when crimping the terminal and the wire harness.

[0028] Figure 10 This is a schematic diagram of the structure after the terminal and wire harness are crimped.

[0029] In the figure: 1. Conveyor belt; 11. Right-angle support plate; 111. Right-angle supporting plate; 112. Arc-shaped supporting plate; 12. Support column; 2. Crimping mechanism; 21. L-shaped fixing plate; 211. Vertical column; 212. Upper crimping die; 213. Positioning seat; 214. Lower crimping die; 22. Power member; 221. Motor; 222. Cam; 223. Transmission column; 224. First push rod; 3. Straightening mechanism; 31. Limiting plate; 32. Sliding member; 321. Horizontal column; 322. Connecting block; 33. Guiding member; 331. Vertical plate; 332. Guide rod; 333. Trajectory plate; 334. Guide groove; 34. Clamping member; 341. Inclined groove; 342. Embedded rod; 343. Clamping base; 344. Vertical groove; 345. Moving rod; 346. Synchronous rod; 347. Guide plate; 348. Transmission rod; 349. Outer clamping jaw; 350. Inner clamping jaw; 351. Second push rod; 352. Wedge-shaped guide block; 4. Anti-dropping mechanism; 41. Right-angle connecting rod; 411. Mounting plate; 412. Anti-dropping plate; 42. Limiting member; 421. Right-angle connecting plate; 422. Connecting column; 423. Limiting block; 424. Horizontal plate; 425. Adjusting stud. Detailed implementation mode

[0030] The embodiments of the present invention will be described in detail below. The embodiments described below are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention. For those not specified in the embodiments in terms of specific technology or conditions, they shall be carried out according to the technology or conditions described in the literature in the field or according to the product instructions.

[0031] Refer to Figure 1 、 Figure 2 、 Figure 4 、 Figure 9 and Figure 10 , a connector terminal and wire harness crimping device, including a conveyor belt 1, right-angle support plates 11 are symmetrically connected to the left and right of the conveyor belt 1, spacer block groups are symmetrically arranged on the left and right of the conveyor belt 1, the spacer block groups are composed of a plurality of evenly arranged spacer blocks, support columns 12 are symmetrically fixed to the front and rear of the bottom of the vertical section of the right-angle support plate 11, a crimping mechanism 2 and a straightening mechanism 3 are sequentially arranged in the front and rear on the horizontal section of each right-angle support plate 11, and an anti-dropping mechanism 4 is arranged between the horizontal sections of the two right-angle support plates 11; a blanking baffle is commonly arranged on the front side of the horizontal sections of the two right-angle support plates 11; a right-angle supporting plate 111 is fixed at the top of the horizontal sections of the two right-angle support plates 11 and at the position of the straightening mechanism 3, and arc-shaped supporting plates 112 are fixed to the opposite side surfaces of the vertical sections of the two right-angle support plates 11, and the coiled row of terminals are supported and guided by the cooperation of the right-angle supporting plate 111 and the arc-shaped supporting plate 112.

[0032] The present invention uses a conveyor belt 1 in cooperation with a spacer block group to complete the transmission of the wire harness, enabling the crimping mechanism 2 to quickly complete the crimping operation on the wire harness and the terminals to be wound up. At the same time, before crimping, the straightening mechanism 3 straightens the left and right ends of the wire harness to be crimped and can accurately position the left and right ends of the wire harness to be crimped, thereby ensuring that the lengths of the left and right ends of the wire harness are the same and making the crimping of the terminals and the two ends of the wire harness more accurate.

[0033] Refer to Figure 1 and Figure 2 As shown in FIGS. and, the anti-dropping mechanism 4 includes two sets of right-angle connecting rods 41 fixed to the top of the horizontal section of the right-angle support plate 11. An installation plate 411 is fixed between the horizontal sections of each set of right-angle connecting rods 41. Anti-dropping plates 412 are symmetrically fixed on the left and right sides of the two installation plates 411. The anti-dropping plate 412 is composed of a straight section and an arc section on the front side. A limiting member 42 for limiting the extending length of the left and right ends of the wire harness is provided on the top of the front installation plate 411.

[0034] The limiting member 42 includes a right-angle connecting plate 421 fixed to the top of the front installation plate 411. A connecting column 422 is vertically slidably connected to the horizontal section of the right-angle connecting plate 421. A limiting block 423 is fixed to the bottom of the connecting column 422. A horizontal plate 424 is fixed to the top of the connecting column 422. An adjusting screw 425 is threadedly connected to the horizontal plate 424, and the adjusting screw 425 is rotatably installed on the top of the horizontal section of the right-angle connecting plate 421.

[0035] Specifically, first, the wire harness is fed in sequence by the external feeding unit at the rear, so that the wire harness is sequentially caught between two adjacent limiting blocks 423. At this time, the spacer blocks move along with the conveyor belt 1 and gradually drive the wire harness forward. A winding unit is provided at the front, which winds up a plurality of terminals in sequence in cooperation with the right-angle supporting plate 111 and the arc-shaped supporting plate 112 as the limiting block 423 moves. When the wire harness moves to the position of the straightening mechanism 3 along with the conveyor belt 1, the straightening mechanism 3 will complete the straightening operation on both ends of the conductor of a single wire harness, so that the wire harness conductors with the left and right ends straightened and the insulating layers stripped are gathered together. After straightening, the wire harness and the terminals will move to the position of the crimping mechanism 2 together. Subsequently, the crimping mechanism 2 completes the crimping operation on the corresponding terminals and both ends of the wire harness. After the crimping mechanism 2 completes the crimping of the terminals and the wire harness, the conveyor belt 1 cooperates with the anti-dropping mechanism 4 and the blanking baffle to complete the blanking operation of the wire harness and the terminals.

[0036] It should be noted that in order to ensure that the crimping mechanism 2 can complete the crimping operation on each group of terminals and wire harnesses, the conveyor belt 1 needs to be of a stepping type, and at the same time, the external terminal winding unit needs to perform intermittent winding at the same speed as the conveyor belt 1.

[0037] The anti - shedding plate 412 cooperates with the spacer block to stably convey the wire harness along the conveyor belt 1, thus avoiding the situation of the wire harness falling during the conveying process. At the same time, it ensures that the wire harness remains in a stable state under the crimping action of the crimping mechanism 2. And through the cooperation of the limiting member 42 and the straightening mechanisms 3 on both the left and right sides, when the straightening mechanisms 3 straighten the two ends of the wire harness, the wire harness can be symmetrically distributed with the middle position as the reference for the left and right ends, and the distances extended by the left and right ends of the wire harness are equal and accurately aligned with the crimping positions of the crimping mechanism 2.

[0038] Specifically, before conveying the wire harnesses of the same batch, first rotate the adjusting stud 425 according to the length of the wire harness, thereby driving the horizontal plate 424 and the limiting block 423 to move up and down. At this time, the limiting block 423 can adjust the extended lengths of the left and right ends of the wire harness according to the length of the wire harness. After the height adjustment of the limiting block 423 is completed, the wire harness is conveyed forward through the external feeding structure in cooperation with the conveyor belt 1 and the spacer block. During the conveying process, the anti - shedding plate 412 will seal the wire harnesses in adjacent two spacer blocks at the top, thereby reducing the risk of the wire harness falling during the conveying process.

[0039] Refer to Figure 1 、 Figure 2 and Figure 3 The crimping mechanism 2 includes an L - shaped fixing plate 21 fixed on the top of the horizontal section of the right - angled support plate 11. A vertical column 211 is vertically slidably connected to the horizontal section of the L - shaped fixing plate 21. A reset structure is connected between the vertical column 211 and the L - shaped fixing plate 21. A crimping upper die 212 is fixed at the bottom of the vertical column 211. A crimping lower die 214 is installed at the position corresponding to the crimping upper die 212 on the top of the horizontal section of the right - angled support plate 11 through a positioning seat 213. The right - angled support plate 11 is provided with a power member 22 that drives the vertical column 211 to reciprocate up and down to complete the crimping; the reset structure consists of a square plate at the top of the vertical column 211 and a reset spring connected between the square plate and the horizontal section of the L - shaped fixing plate 21.

[0040] The power member 22 includes a motor 221 installed on the horizontal section of the right - angled support plate 11 through a motor box. The output end of the motor 221 is fixed with a cam 222. A transmission column 223 is rotatably installed on the top of the horizontal section of the right - angled support plate 11 corresponding to the cam 222 through a mounting post. A first push rod 224 is fixed at the front end of the transmission column 223 corresponding to the position of the cam 222. The transmission column 223 is rotatably connected to the vertical column 211.

[0041] The crimping upper die 212 and the vertical column 211 can quickly reciprocate up and down under the driving action of the power member 22, so that the wire harness and the terminal can move between the crimping upper die 212 and the crimping lower die 214 when the crimping upper die 212 and the vertical column 211 rise, thereby ensuring that the crimping lower die 214 and the crimping upper die 212 complete the crimping action on the wire harness and the terminal.

[0042] Specifically, after the straightening mechanism 3 cooperates with the limit block 423 to complete the straightening of both ends of the wire harness and the determination of the lengths of both ends of the wire harness, the wire harness and the terminals will continue to move forward under the action of the conveyor belt 1. At this time, the control motor 221 drives the cam 222 to rotate continuously. Subsequently, during the rotation of the cam 222, the cam 222 will push the first push rod 224, thereby driving the transmission column 223 to rotate around the mounting column as the center. As the transmission column 223 rotates, the transmission column 223 will drive the vertical column 211 to move upward and stretch the return spring. When the vertical column 211 moves upward, the vertical column 211 will drive the upper crimping die 212 to separate from the lower crimping die 214. At this time, the wire harness and the terminals will move to the position between the upper crimping die 212 and the lower crimping die 214 respectively under the conveying action of the conveyor belt 1 and the winding action of the external winding unit. When the cam 222 separates from the first push rod 224, the vertical column 211 will quickly move downward due to its own gravity and the elastic force of the return spring and drive the upper crimping die 212 to press against the wire harness and the terminals in sequence. At this time, the upper crimping die 212 cooperating with the lower crimping die 214 can complete the crimping action of the wire harness and the terminals.

[0043] Refer to Figure 2 、 Figure 4 and Figure 6 As shown in, the straightening mechanism 3 includes a limit plate 31 fixed to the top of the horizontal section of the right-angle support plate 11. A sliding member 32 is connected to the limit plate 31. A guiding member 33 is connected between the sliding member 32 and the vertical column 211. Clamping members 34 are provided at the opposite ends of the two sliding members 32. The sliding member 32 is driven to move by the guiding member 33 while cooperating with the clamping member 34 to complete the straightening action.

[0044] The sliding member 32 includes a horizontal column 321 slidably connected horizontally to the limit plate 31. A connecting block 322 is fixed to one end of the horizontal column 321 close to the conveyor belt 1. The top of the connecting block 322 is connected to the guiding member 33. The side of the connecting block 322 close to the conveyor belt 1 is connected to the clamping member 34.

[0045] The guiding member 33 includes a vertical plate 331 fixed to the top of the connecting block 322. A guiding rod 332 is fixed to the side of the vertical plate 331 close to the vertical column 211. A track plate 333 cooperating with the guiding rod 332 is fixed to the side of the vertical column 211. A guiding groove 334 is formed in the track plate 333.

[0046] Specifically, when the vertical column 211 moves upward, the conveyor belt 1 is in a stopped state at this time, and the wire harness is located at the straightening mechanism 3. The vertical column 211 drives the track plate 333 to move upward. At this time, the track plate 333 will drive the horizontal column 321 and the clamping member 34 to move away from the conveyor belt 1 through the cooperation of the guide groove 334 and the guide rod 332, so as to complete the straightening action of both ends of the wire harness through the clamping member 34. Moreover, the clamping member 34 can keep the wire harness in a straightened state during the process of pulling the wire harness, so as to cooperate with the limit block 423 to complete the adjustment of the lengths of the left and right ends of the wire harness.

[0047] Refer to Figure 4 - Figure 8 , the clamping member 34 includes inclined grooves 341 symmetrically opened on the side of the connecting block 322 close to the conveyor belt 1 in the front and rear. The two inclined grooves 341 are distributed in an inverted V shape. Each inclined groove 341 is connected with a clamping base 343 through an embedded rod 342. A guiding structure for driving the clamping base 343 to move up and down is jointly arranged on the side of the connecting block 322 and the top of the horizontal section of the right-angle support plate 11. Clamping structures are symmetrically arranged on the front and rear of the two connecting blocks 322. Through the cooperation of the inclined groove 341 and the embedded rod 342, the clamping base 343 moves downward and approaches each other under the driving action of the guiding structure, and at the same time drives the clamping structure to complete the clamping and straightening actions.

[0048] The guiding structure includes a vertical groove 344 opened on the side of the connecting block 322 close to the conveyor belt 1. A moving rod 345 is vertically and slidably connected in the vertical groove 344. One end of the moving rod 345 close to the conveyor belt 1 is fixed with a synchronous rod 346. The synchronous rod 346 is slidably connected with both clamping bases 343. Guide plates 347 are symmetrically fixed on the top of the horizontal section of the right-angle support plate 11 with the vertical groove 344 as the axis. A track groove is opened on the guide plate 347, and the track groove is composed of an inclined section and a horizontal section. Transmission rods 348 for cooperating with the track groove are symmetrically fixed at the front and rear ends of the synchronous rod 346.

[0049] The clamping member 34 is used to clamp both ends of the wire harness, and gradually completes the straightening action of both ends of the wire harness as the horizontal column 321 moves away from the conveyor belt 1. Moreover, during the process of wire harness conveying, the wire harness is located below the clamping member 34. At this time, through the cooperation of the inclined groove 341 and the guiding structure, the clamping structure and the clamping base 343 can be accurately aligned with the position where the wire harness is located, ensuring the accuracy of wire harness straightening. And because the movement of the clamping base 343 is synchronously controlled by the guiding structure and the inclined groove 341, the clamping base 343 can automatically complete the straightening action during the pressing process of the pressing mechanism 2, so as to improve the quality of the terminals and wire harnesses after pressing without reducing the pressing efficiency.

[0050] Specifically, when the guiding groove 334 presses against the guiding rod 332 and drives the horizontal column 321 and the clamping member 34 to move away from the conveyor belt 1, at this time, the transmission rod 348 moves downward under the guiding action of the inclined section of the track groove, thereby driving the synchronous rod 346 to move downward. Since the synchronous rod 346 is slidably connected to both clamping bases 343, the clamping bases 343 move downward synchronously as the synchronous rod 346 moves downward. Also, due to the guiding action of the inclined groove 341, the two clamping bases 343 move toward each other under the guiding action of the embedded rod 342 and the inclined groove 341 during the downward movement, thereby driving the two clamping structures to gradually clamp both ends of the wire harness during the downward alignment of both ends of the wire harness. After the clamping is completed, as the horizontal column 321 continues to move away from the conveyor belt 1, at this time, the transmission rod 348 will move to the horizontal section of the track groove, and the vertical position of the clamping base 343 will no longer change. Subsequently, the clamping structure moves synchronously with the horizontal column 321 to complete the straightening action of the wire harness.

[0051] Refer to Figure 6 - Figure 8 , the clamping structure includes a limiting groove opened on the clamping base 343. An outer clamping jaw 349 is vertically slidably connected to the limiting groove. A compression spring is connected between the outer clamping jaw 349 and the bottom of the limiting groove. An inner clamping jaw 350 is slidably connected to one side of the outer clamping jaw 349 close to the vertical groove 344. A plurality of semi-circular grooves are uniformly arranged on one side of the inner clamping jaw 350 close to the vertical groove 344. A plurality of V-shaped spring pieces are connected between the inner clamping jaw 350 and the outer clamping jaw 349. A second receiving push rod 351 is fixed to one end of the outer clamping jaw 349 away from the vertical groove 344. A wedge-shaped guiding block 352 for driving the second receiving push rod 351 to move is fixed to the side of the guiding plate 347 corresponding to the second receiving push rod 351. The two wedge-shaped guiding blocks 352 corresponding to the front and rear positions are upside down. A wire harness positioning groove for limiting the second receiving push rod 351 is opened on the side of the guiding plate 347.

[0052] The clamping structure can complete the straightening action of both ends of the wire harness by clamping both ends of the wire harness. At the same time, the wedge-shaped guiding block 352 cooperating with the second receiving push rod 351 can enable the outer clamping jaw 349 to cooperate with the inner clamping jaw 350 to achieve a twisting action, thereby further making the wire harness conductors converge and be straightened. And through the semi-circular grooves provided on the inner clamping jaw 350, the conductors inside the convergence can be limited and clamped, thereby improving the effect of twisting to make the wire harness conductors converge by preventing relative sliding between the inner clamping jaw 350 and the wire harness conductors.

[0053] Specifically, when the two clamping bases 343 move downward and move toward each other simultaneously, at this time, the outer clamping jaws 349 and the inner clamping jaws 350 will move synchronously due to the movement of the clamping bases 343, so that the outer clamping jaws 349 together with the inner clamping jaws 350 gradually move toward the wire harness conductor until the inner clamping jaws 350 contact the conductor position of the wire harness. Subsequently, the two inner clamping jaws 350 cannot move further due to the obstruction of the wire harness, resulting in a relative displacement between the inner clamping jaws 350 and the outer clamping jaws 349 and compressing the V-shaped spring piece. Then, the inner clamping jaws 350 and the outer clamping jaws 349 will stop moving downward with the clamping bases 343 and move away from the conveyor belt 1 synchronously with the horizontal posts 321. At this time, the inner clamping jaws 350 will complete the straightening action of the wire harness. At the same time, the receiving push rod two 351 will move away from the wire harness slot. When the receiving push rod two 351 moves away from the conveyor belt 1, the receiving push rod two 351 on the front and rear sides will be simultaneously pushed by two wedge-shaped guiding blocks 352 that are upside down, so that the outer clamping jaws 349 on both sides deflect in the same direction and drive the inner clamping jaws 350 to complete the twisting action of the wire harness conductor, thereby ensuring the straightening and bundling effects of the wire harness conductor.

[0054] It should be noted that after the inner clamping jaws 350 and the outer clamping jaws 349 complete the straightening and bundling actions of the wire harness conductor, the inner clamping jaws 350 will separate from the outer clamping jaws 349 and the wire harness conductor. At this time, the conveyor belt 1 drives the straightened wire harness to move forward. At the same time, the vertical post 211 is located at the uppermost position. Subsequently, the conveyor belt 1 will drive the wire harness forward to the positions of the upper pressing die 212 and the lower pressing die 214. After that, the vertical post 211 can quickly return to its original position and complete the pressing action of the wire harness and the terminal. At this time, the inner clamping jaws 350 and the outer clamping jaws 349 will quickly return to their original positions under the guiding action of the guiding member 33, and avoid contacting the wire harness during the process of the inner clamping jaws 350 and the outer clamping jaws 349 returning to their original positions.

[0055] The working steps of the present invention are as follows: First step, before pressing the wire harness and the terminal, first rotate the adjusting screw 425 of the limiting member 42 according to the length of the wire harness to drive the horizontal plate 424 and the limiting block 423 to move up and down to determine the length of the wire harness extending from both ends; after the height adjustment of the limiting block 423 is completed, the wire harness is sequentially clamped between the adjacent spacer blocks of the conveyor belt 1 through the external feeding unit at the rear side, and at the same time, the external winding unit at the front side intermittently winds the row of terminals at the same speed as the conveyor belt 1; the conveyor belt 1 drives the spacer block group to move the wire harness forward in a step-by-step manner, and closes the top of the wire harness through the straight section and the arc section of the anti-dropping plate 412 to prevent it from falling off during the conveying process.

[0056] In the second step, when the wire harness moves to the straightening mechanism 3 along with the conveyor belt 1 and the spacer block, the right-angle supporting plate 111 and the arc-shaped supporting plate 112 cooperate with each other to support the terminals and move them forward in the conveying direction of the conveyor belt 1. At the same time, the anti-dropping mechanism 4 presses down the middle section of the wire harness to ensure that the wire harness is symmetrically distributed with the middle as the reference and the lengths of the left and right ends extending out of the spacer block are the same as the crimping length.

[0057] In the third step, when the wire harness moves to the straightening mechanism 3 along with the conveyor belt 1 and the spacer block, the vertical column 211 of the crimping mechanism 2 is driven by the power member 22 to rise, driving the guide rod 332 through the guide groove 334 of the track plate 333, so that the horizontal column 321 moves outwards; the synchronous rod 346 moves down along the inclined section of the track groove of the guide plate 347, driving the clamping bases 343 to move towards each other through the inclined groove 341. After the inner clamping jaws 350 of the clamping structure contact the wire harness conductor, they clamp the wire harness under the action of the V-shaped spring piece; when the horizontal column 321 continues to move outwards, under the action of the push rod two 351 and the wedge-shaped guide block 352, the outer clamping jaws 349 and the inner clamping jaws 350 twist the wire harness conductor to make it gather and straighten.

[0058] In the fourth step, after the left and right ends of the wire harness are straightened, the wire harness and the terminals move to the position of the crimping mechanism 2 along with the conveyor belt 1; the motor 221 drives the cam 222 to rotate, pushing the transmission column 223 driven by the push rod one 224 to rotate, so that the vertical column 211 rises and stretches the return spring, and the crimping upper die 212 is separated from the crimping lower die 214; after the wire harness and the terminals enter the crimping position, the cam 222 is separated from the push rod one 224, and the vertical column 211 drives the crimping upper die 212 to quickly press down under the action of the return spring, and cooperates with the crimping lower die 214 to complete the crimping of the terminals and the wire harness.

[0059] In the fifth step, after the wire harness and the terminals are crimped, the conveyor belt 1 continues to move step by step, and the anti-dropping plate 412 of the anti-dropping mechanism 4 maintains the stability of the wire harness; when the wire harness moves to the position of the blanking baffle, through the continuous conveying of the conveyor belt 1 and the guiding action of the blanking baffle, the crimped products are unloaded from between the spacer blocks to complete the continuous blanking process.

[0060] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention, and still be covered by the protection scope of the present invention.

Claims

1. A connector terminal and wire harness crimping device, comprising a conveyor belt, right-angle support plates symmetrically connected to the left and right of the conveyor belt, spaced block groups symmetrically arranged on the left and right of the conveyor belt, the spaced block groups being composed of multiple uniformly arranged spaced blocks, support columns symmetrically fixed to the front and back of the bottom of the vertical sections of the right-angle support plates, characterized in that, A crimping mechanism and a straightening mechanism are sequentially arranged in the front and rear directions on the horizontal section of each right-angle support plate, and an anti-dropping mechanism is arranged between the horizontal sections of the two right-angle support plates; The crimping mechanism includes an L-shaped fixing plate fixed to the top of the horizontal section of the right-angle support plate. A vertical column is vertically slidably connected to the horizontal section of the L-shaped fixing plate. A reset structure is connected between the vertical column and the L-shaped fixing plate. A crimping upper die is fixed to the bottom of the vertical column. A crimping lower die is installed through a positioning seat at a position corresponding to the crimping upper die on the top of the horizontal section of the right-angle support plate. The right-angle support plate is provided with a power member that drives the vertical column to reciprocate up and down to complete crimping; The straightening mechanism includes a limiting plate fixed to the top of the horizontal section of the right-angle support plate. A sliding member is connected to the limiting plate. A guiding member is connected between the sliding member and the vertical column. Clamping members are arranged at the relative ends of the two sliding members. The guiding member drives the sliding member to move while cooperating with the clamping members to complete the straightening action.

2. The crimping device for a connector terminal and a wire harness according to claim 1, characterized in that, The anti-dropping mechanism includes two groups of right-angle connecting rods fixed to the top of the horizontal section of the right-angle support plate in the front and rear directions. A mounting plate is fixed between the horizontal sections of each group of right-angle connecting rods. Anti-dropping plates are symmetrically fixed to the left and right on the two mounting plates. A limiting member for restricting the extending lengths of the left and right ends of the wire harness is arranged on the top of the front mounting plate.

3. The crimping device for a connector terminal and a wire harness according to claim 2, wherein, The limiting member includes a right-angle connecting plate fixed to the top of the front mounting plate. A connecting column is vertically slidably connected to the horizontal section of the right-angle connecting plate. A limiting block is fixed to the bottom of the connecting column. A horizontal plate is fixed to the top of the connecting column. An adjusting screw is threadedly connected to the horizontal plate. The adjusting screw is rotatably installed on the top of the horizontal section of the right-angle connecting plate.

4. A crimping device for a connector terminal and a wire harness according to claim 1, characterized in that, Right-angle supporting plates are fixed to the tops of the horizontal sections of the two right-angle support plates and located at the position of the straightening mechanism. Arc-shaped supporting plates are fixed to the opposite side surfaces of the vertical sections of the two right-angle support plates. The right-angle supporting plates cooperate with the arc-shaped supporting plates to support and guide the row of terminals wound up.

5. A crimping device for a connector terminal and a wire harness according to claim 1, characterized in that, The power member includes a motor installed on the horizontal section of the right-angle support plate through a motor box. A cam is fixed to the output end of the motor. A transmission column is rotatably installed through a mounting column at a position corresponding to the cam on the top of the horizontal section of the right-angle support plate. A first push rod is fixed to the front end of the transmission column at a position corresponding to the cam. The transmission column is rotatably connected to the vertical column.

6. The crimping device for a connector terminal and a wire harness according to claim 1, characterized in that, The sliding member includes a horizontal column horizontally slidably connected to the limiting plate. A connecting block is fixed to one end of the horizontal column close to the conveyor belt. The top of the connecting block is connected to the guiding member. The side surface of the connecting block close to the conveyor belt is connected to the clamping member.

7. A connector terminal and wire harness crimping device according to claim 6, characterized in that, The guiding member includes a vertical plate fixed to the top of the connecting block. A guiding rod is fixed to the side surface of the vertical plate close to the vertical column. A track plate cooperating with the guiding rod is fixed to the side surface of the vertical column. A guiding groove is formed in the track plate. The guiding groove cooperates with the guiding rod to drive the horizontal column and the clamping member to move away from the conveyor belt.

8. A connector terminal and wire harness crimping device according to claim 6, characterized in that, The clamping member includes inclined grooves symmetrically formed at the front and rear on the side of the connecting block close to the conveyor belt. Each inclined groove is connected with a clamping base through an embedded rod. A guiding structure for driving the clamping base to move up and down is jointly arranged on the side of the connecting block and the top of the horizontal section of the right-angle support plate. Clamping structures are symmetrically arranged at the front and rear on the two connecting blocks. Through the cooperation of the inclined groove and the embedded rod, the clamping base moves downward and approaches each other under the driving action of the guiding structure, and at the same time drives the clamping structure to complete the clamping and straightening actions.

9. The crimping device for a connector terminal and a wire harness according to claim 8, wherein, The guiding structure includes a vertical groove formed on the side of the connecting block close to the conveyor belt. A moving rod is vertically and slidably connected in the vertical groove in a limited manner. A synchronous rod is fixed at one end of the moving rod close to the conveyor belt. The synchronous rod is slidably connected with both clamping bases. Guide plates are symmetrically fixed at the front and rear on the top of the horizontal section of the right-angle support plate with the vertical groove as the axis. A track groove is formed on the guide plate. Transmission rods for cooperating with the track groove are symmetrically fixed at the front and rear ends of the synchronous rod.

10. A crimping device for a connector terminal and a wire harness according to claim 9, characterized in that, The clamping structure includes a limiting groove formed on the clamping base. An outer clamping jaw is vertically slidably connected in the limiting groove. A compression spring is connected between the outer clamping jaw and the bottom of the limiting groove. An inner clamping jaw is slidably connected to one side of the outer clamping jaw close to the vertical groove. A plurality of semi-circular grooves are evenly arranged on one side of the inner clamping jaw close to the vertical groove. A plurality of V-shaped spring pieces are connected between the inner clamping jaw and the outer clamping jaw. A second push rod is fixed at one end of the outer clamping jaw away from the vertical groove. A wedge-shaped guiding block for driving the second push rod to move is fixed on the side of the guide plate corresponding to the second push rod.

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